JP2016116268A - Closure repair member, closure repair structure, and closure repair method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a closure repair member, a closure repair structure, and a closure repair method which allow a user to easily and reliably perform gas leakage repair work.SOLUTION: A repair member for a closure 1 comprises: a cylindrical sleeve 2 which houses a connection where at least two cables C are connected to each other; and an end face plate which has a hole for inserting the cables C and encloses the sleeve 2 with the cables C inserted into the hole. The repair member comprises: an air circulation pipe 12 which communicates to a leakage point of gas leaking from the closure 1 and allows the leakage gas from the closure 1 to circulate; a mold member 16 which has a hole for inserting the cables C and covers the end face plate with the cables C inserted into the hole in a state where a tip 12a of the air circulation pipe 12 is exposed to the outside; and a filling member 11 which is a liquid resin material filled into a space formed between the end face plate and the mold member 16, and cures as time passes.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a closure repair member, a closure repair structure, and a closure repair method.

  Conventionally, a closure that covers and protects a connection portion of a communication cable is known. A gas such as air or nitrogen gas is pressurized and supplied to the inside of the closure through a cable, and this pressurized gas prevents water from entering the closure.

  Patent Document 1 describes a gas leak repair method for a cable connection portion protection case including a cylindrical sleeve that accommodates a connection portion of a communication cable and end face plates attached to both ends of the sleeve. In this gas leak repair method, a cable located outside the end face plate is sandwiched between two semicircular molds. After pressing the two molds against the end plate, liquid urethane foam is filled into the mold from the injection port formed in the upper mold, and this urethane foam is cured to cause gas leakage. Repair. After the urethane foam is cured, the mold is removed and the repair is completed.

JP-A-5-146026

  In the repair method described in Patent Document 1, liquid foamed urethane is filled into the mold, and the gas leakage is blocked by foaming and curing the foamed urethane. In this repair method, if the repair is performed in a state where gas is leaking, a path for the leaked gas is formed when the liquid foamed urethane is filled, and eventually the gas leak cannot be solved. In this case, it is necessary to further repair the gas leak location. Thus, there is a possibility that the repair work for the gas leak becomes insufficient.

  Therefore, it is desired that repair work for gas leakage can be performed easily and reliably.

  A member for repairing a closure according to an aspect of the present invention includes a cylindrical sleeve that accommodates a connection portion to which at least two cables are connected, a first hole portion through which the cable passes, and a cable in the first hole portion. A member for repairing a closure having an end face plate that seals the sleeve in a state of passing through, an air circulation pipe that communicates with a leakage portion of gas leaking from the closure and distributes the gas leaked from the closure, and a cable A mold member that covers the end face plate in a state in which the cable is passed through the second hole portion, and the end face plate and the mold member. And a filling member that is a liquid resin material that fills the space formed therebetween and cures over time.

  According to such a form, the end face plate is covered with the filling member by covering the end face plate with the mold member and filling the space formed between the end face plate and the mold member with the filling member. And in this form, the air flow pipe which distribute | circulates the gas which leaks from a closure communicates with a leak part is provided, and the front-end | tip of an air flow pipe is exposed outside in the state which covered the end surface board with the mold member. By disposing the air circulation pipe in this way, the gas leaking from the leaking part can be guided to the outside of the mold member. Then, while the gas leaked from the closure is passed through the air circulation pipe, the liquid filling member is filled into the space formed between the mold member and the end face plate. In this way, when the liquid filling member is filled, the gas leaked from the closure is discharged outward through the air circulation pipe, so that foaming due to the leaked gas does not occur in the filling member. Therefore, since the gas passage is not formed in the filling member when the filling member is cured, the leakage portion can be reliably closed by closing the tip of the air flow pipe after the filling member is cured. As described above, the filling member is cured between the end face plate and the mold member, and the end of the air circulation pipe through which the leaking gas passes is closed, so that the repair work of the gas leakage can be easily and reliably performed.

  In the repair member according to another aspect, the mold member may cover a part of the side surface of the sleeve, and the filling member may be filled in a space formed between the mold member and the side surface of the sleeve.

  The repair member according to another aspect may further include an adhesive member that is provided on the surface of the end face plate or the surface of the sleeve and adheres to the cured filling member.

  A repair structure for a closure according to an aspect of the present invention includes a cylindrical sleeve that accommodates a connection portion to which at least two cables are connected, a first hole portion through which the cable passes, and a cable in the first hole portion. A closure repairing structure comprising an end face plate that seals the sleeve in a state of passing through, a filling member disposed facing the end face of the closure having a leakage portion, and the filling member from the outside of the end face plate A pressurizing member for pressurizing.

  According to such a form, the filling member is arranged facing the end face of the closure having the leaking portion, and the filling member is pressurized from the outside by the pressure member. Thus, since the leaking part of the closure end surface is closed by the filling member, the repair work of the gas leak leaking from the leaking part can be easily and reliably performed. Moreover, since the leaking part of the closure end surface is locally covered with a filling member, and repairs can be performed with respect to a point requiring repair, a small and simple repair structure can be obtained.

  In the repair structure according to another aspect, the pressurizing member has a third hole portion through which the cable passes and is attached to face the end face plate in a state in which the cable is passed through the third hole portion. A space formed between the face plate and the pressure member may be filled.

  In the repair structure according to another aspect, the pressure member may include a side wall member disposed along the circumferential direction of the end face plate.

  In a repair structure according to another embodiment, an air flow pipe that communicates with a leakage portion of gas leaking from the closure and circulates gas leaked from the closure may be provided.

  In the repair structure according to another embodiment, the filling member may be made of a curable material that is liquid when filled.

  In a repair structure according to another embodiment, the filling member may be made of a material that is clay-like when filled and hardens into a rubber-like shape after filling.

  A repair structure according to another aspect includes a fixing member fixed to at least one of a cable, a sleeve, and an end plate, and the pressure member is supported by the fixing member so as to be movable in the extending direction of the cable. Also good.

  A closure repair method according to an aspect of the present invention includes a cylindrical sleeve that accommodates a connection portion to which at least two cables are connected, a first hole portion through which the cable passes, and a cable in the first hole portion. A method of repairing a closure comprising an end face plate that seals the sleeve in a state of being passed through, the step of attaching an air flow pipe that communicates with the leakage portion of the gas leaking from the closure and distributes the gas leaked from the closure; A step of attaching a mold member that has a second hole portion through which the cable is passed and the end plate is covered in a state where the cable is passed through the second hole portion, with the tip of the air circulation pipe exposed to the outside; and a liquid resin material In addition, the method includes a step of filling a space formed between the end face plate and the mold member with a filling member that hardens over time, and a step of closing the tip of the air circulation pipe exposed to the outside.

  In the repair method according to another aspect, after the filling member is cured, a step of arranging a viscoelastic material at a boundary portion between the filling member and the cable and / or a boundary portion between the filling member and the sleeve, and the viscoelastic material And a step of wrapping a tape having elasticity to press the viscoelastic material against the cable or the sleeve.

  In the repair method according to another aspect, the method may further include a step of placing an adhesive member that adheres to the cured filling member on the surface of the end face plate or the surface of the sleeve before the step of filling the filling member into the space. .

  In the repair method according to another aspect, a step of polishing a contact portion of the cable surface with the filling member may be further provided before the step of filling the space with the filling member.

  According to another aspect of the present invention, there is provided a closure repair method comprising: a cylindrical sleeve that accommodates a connecting portion to which at least two cables are connected; a first hole portion through which the cable passes; and a cable in the first hole portion. A closure repairing method comprising an end face plate that seals a sleeve in a state where the filling member is passed through, the step of disposing the filling member facing the end face of the closure having a leakage portion, and the end of the filling member by a pressure member And pressurizing from the outside of the face plate.

  In the repair method according to another aspect, before the step of arranging the filling member, the pressure member is attached to face the end face plate, and the filling member is arranged in the step of placing the filling member between the end face plate and the pressure member. The formed space may be filled with a filling member.

  In the repair method according to another aspect, the filling member may be made of a material that is in a clay state at the time of filling and hardens into a rubber shape after filling.

  In the repair method according to another aspect, before the pressurizing step, the fixing member is fixed to at least one of the cable, the sleeve, and the end face plate, and the pressurizing member is movably supported by the fixing member and pressurized. Then, you may pressurize a filling member by moving a pressurization member in the extension direction of a cable.

  According to the present invention, it is possible to easily and reliably perform repair work for gas leakage.

It is a perspective view which shows the member for repair which concerns on 1st Embodiment. (A) is a side view which shows the member for repair of FIG. (B) is the sectional view on the AA line of (a). It is sectional drawing to which the member for repair of FIG.2 (b) was expanded. It is a disassembled perspective view which shows each component which comprises the member for repair of FIG. It is a perspective view of the closure which shows the state before repairing with the member for repair of FIG. (A)-(d) is a figure which shows the repair method which repairs a closure with the member for repair of FIG. (A)-(d) is a figure which shows the repair method which repairs a closure with the member for repair of FIG. It is a perspective view which shows the repair structure which concerns on 2nd Embodiment. (A) is a side view which shows the repair structure of FIG. (B) is the BB sectional drawing of (a). It is a disassembled perspective view which shows each component which comprises the repair structure of FIG. It is a perspective view of the closure which shows the state before repairing with the repair structure of FIG. (A)-(d) is a perspective view which shows the repair method which forms the repair structure of FIG. 8, and repairs a closure. (A)-(d) is a perspective view which shows the repair method which forms the repair structure of FIG. 8, and repairs a closure. It is a perspective view which shows the repair structure which concerns on 3rd Embodiment. It is a disassembled perspective view which shows each component which comprises the repair structure of FIG. (A) And (b) is a perspective view which shows the repair method which forms the repair structure of FIG. 14, and repairs a closure. (A)-(d) is a perspective view which shows the repair method which forms the repair structure of FIG. 14, and repairs a closure. (A)-(d) is a perspective view which shows the repair method which forms the repair structure of FIG. 14, and repairs a closure. (A) is a side view which shows the repair structure which concerns on 4th Embodiment. (B) is CC sectional view taken on the line of (a). It is a disassembled perspective view which shows each component which comprises the repair structure of Fig.19 (a). (A) is a perspective view which shows the repair structure of Fig.19 (a). (B) is the perspective view which expanded the end face board vicinity of (a). (A) And (b) is a perspective view which shows the repair method which forms the repair structure of FIG. 19 (a), and repairs a closure. It is sectional drawing which shows the state with which the filling member was filled between the end surface board and the cable. (A) is a side view which shows the state with which the filling member was filled between the end surface board and the cable. (B) is the DD sectional view taken on the line of (a). (A) And (b) is a perspective view which shows the repair method which forms the repair structure of FIG. 19 (a), and repairs a closure. (A)-(d) is a perspective view which shows the repair method which repairs a closure by forming the repair structure of Fig.19 (a). (A) is a front view which shows the repair structure which concerns on 5th Embodiment. (B) is the EE sectional view taken on the line of (a). It is a disassembled perspective view which shows each component which comprises the repair structure of Fig.27 (a). (A) And (b) is a perspective view which shows the repair method which forms the repair structure of Fig.27 (a), and repairs a closure. It is sectional drawing which shows the state with which the filling member was filled between the end surface board and the cable. (A) is a side view which shows the state with which the filling member was filled between the end surface board and the cable. (B) is the FF sectional view taken on the line of (a). (A) And (b) is a perspective view which shows the repair method which forms the repair structure of Fig.27 (a), and repairs a closure. (A) And (b) is sectional drawing which shows the state which fixes a fixing member to a cable. (A) And (b) is a perspective view which shows the repair method which forms the repair structure of Fig.27 (a), and repairs a closure. It is a perspective view which shows the modification of the state with which the filling member was filled between the end surface board and the cable.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or equivalent elements are denoted by the same reference numerals, and redundant description is omitted.

(First embodiment)
The repair member according to the first embodiment will be described. The term “repair” in the present specification indicates that gas leakage from the closure is eliminated or leakage is reduced to a level that does not cause a problem in use, and includes measures against gas leakage from the closure. There are various types of closures. Specifically, as shown in FIGS. 1 to 3, the closure 1 that protects the connection portion S of the cable C for communication can be cited, and the closure 1 includes the connection portion S of the cable C that extends underground. Provided to protect.

  First, the structure of the closure 1 will be described. The closure 1 is composed of two semi-cylindrical sleeves 2 fixed to each other by a screw 3 of a band member 5 and has a cylindrical shape as a whole. The sleeve 2 accommodates the connection portion S of the cable C. The material of the sleeve 2 is, for example, polypropylene. The sleeve 2 constitutes the side surface of the cylindrical closure 1.

  The sleeve 2 includes a plurality of ribs 2 a arranged in parallel along the longitudinal direction of the closure 1 (the axial direction of the closure 1 and the extending direction of the cable C), and each rib 2 a extends in the circumferential direction of the closure 1. Exist. Further, the screw 3 of the band member 5 is arranged in parallel along the longitudinal direction of the closure 1. In the following description, the axial direction of the closure 1, the radial direction of the closure 1, and the circumferential direction of the closure 1 may be simply referred to as an axial direction, a radial direction, and a circumferential direction, respectively.

  Disc-shaped end plates 4 are provided at both ends in the longitudinal direction of the closure 1, and the sleeve 2 is sealed by the two end plates 4. The end face plate 4 includes a circular hole (first hole) 4a through which the cable C passes. The diameter of the hole 4a is larger than the outer diameter of the cable C. The end face plate 4 is formed by bolting two semi-disc-shaped side wall members 4b.

  A sealing tape is interposed between the two side wall members 4b, and the sealing tape ensures airtightness between the two side wall members 4b. This sealing tape is putty-like, and examples of the material for the sealing tape include butyl rubber. The cable C is wrapped with an air tight tape T1 that closes a gap between the hole 4a of the end face plate 4 and the cable C. The air tight tape T1 is made of rubber, for example.

  2 and 3, only one hole 4a is provided. However, depending on the number of cables C extending from the closure 1 and the type of the cable C, the shape of the end plate and the holes is as follows. It can be changed as appropriate. There are various types of end plates. Specifically, for example, the cable may extend from the connecting portion S into two or three forks. In such a case, the number of holes provided in the end face plate is two or three.

  Gas such as pressurized nitrogen gas or air is supplied to the inside of the sleeve 2 through a cable, and the inside of the sleeve 2 is brought to a high atmospheric pressure by this nitrogen gas, so that water to the inside of the sleeve 2 is supplied. Intrusion is blocked. In addition, a gasket G is provided between the sleeve 2 and the end face plate 4 for airtight maintenance.

  A band member 5 is wound around the outer periphery of the sleeve 2, and a plurality of band members 5 are juxtaposed in the longitudinal direction of the closure 1. These band members 5 are provided for tightening the sleeve 2 having a high internal pressure with screws 3 from the outside, and are made of stainless steel, for example.

  In the closure 1 configured as described above, due to aging or the like, between the cable C and the hole 4a of the end face plate 4 (where the air tight tape T1 is provided), between the end face plate 4 and the sleeve 2, or Gas may leak from the leaking part located between the two side wall members 4b constituting the end face plate 4. Here, the leaking portion is a portion where the gas sealed in the sleeve 2 can leak, such as between the cable C and the hole 4a, between the end face plate 4 and the sleeve 2, or between the two side wall members 4b. Is shown.

  When a gas leak from the leaking part of the closure 1 is detected, it is necessary to perform a repair work to close the leaking part and eliminate the gas leak. Examples of the method for identifying the leakage location include a method of confirming whether or not foaming occurs by attaching a liquid such as soapy water to the surface of the closure 1.

  Next, the repair structure 10 obtained by the repair work of the leakage part mentioned above is demonstrated. In addition, in FIGS. 1-3, the repair structure 10 by which the leaking part L1 located in the clearance gap between the cable C and the hole 4a was repaired is shown. The repair structure 10 includes a hardened filling member 11 that covers the side surfaces of the end face plate 4 and the sleeve 2, an air circulation pipe 12 that extends from the leakage portion L <b> 1 along the cable C to the outside of the closure 1, and an air circulation pipe 12. And a tape member 13 wound around the cable C, and an adhesive member 14 for adhering the filling member 11 to the end face plate 4 and / or the sleeve 2.

  The filling member 11 is a liquid resin material at the time of filling, and is a member that hardens with time. The material of the filling member 11 is preferably a material that adheres to the surface of the cable C or the surface of the closure 1 after curing. The cured filling member 11 has a shape that covers the end face plate 4 and wraps around the side surface of the sleeve 2. Adhesion is formed between the filling member 11 and the closure 1 or the cable C, and leakage of gas from this interface is prevented. The cured filling member 11 has a shape that covers the end face plate 4, the side surface of the sleeve 2, and a part of the cable C extending from the leakage portion L <b> 1. The filling member 11 is formed so that the outer side in the radial direction of the end face plate 4 is thick, and has a shape that tapers away from the closure 1. Examples of the material of the filling member 11 include a two-component mixed type urethane foam or a one-component type foamed urethane that reacts with moisture in the air and foams. It is also possible to use a non-foaming type two-component mixed urethane resin. Since the filling member 11 is in a liquid state at the time of filling, the space between the end face plate 4 and the mold member 16 described later can be filled without a gap. Therefore, the cured filling member 11 is molded in close contact with the cable C and the end plate 4 regardless of the type and unevenness of the end plate 4 and the outer diameter of the used cable C.

  The air circulation pipe 12 extends from the hole 4 a of the end face plate 4 to the outside of the closure 1 along the cable C. The air circulation pipe 12 has a proximal end communicating with the leakage portion L <b> 1, and distributes the gas leaked from the closure 1. The distal end 12a of the air circulation pipe 12 is located outside the filling member 11 and is bent. The air circulation pipe 12 is a pipe that guides the gas leaking from the leakage portion L <b> 1 to the outside of the closure 1, and is sealed after the filling member 11 is cured. The air circulation pipe 12 is, for example, a tubular tube member, and the diameter of the air circulation pipe 12 can be about 5 to 6 mm.

  The tape member 13 winds the air circulation pipe 12 and the cable C. The tape member 13 may be any material as long as it does not easily shift for a long time in a state where the air circulation pipe 12 and the cable C are wound. For example, as the tape member 13, a silicone self-bonding tape, a rubber tape such as EPDM or natural rubber, or the like is used.

  The adhesive member 14 is circumferentially disposed on the surface 4c of the end face plate 4 so as to surround the leakage portion L1 in the vicinity of the end portion on the radially outer side of the end face plate 4. The adhesive strength between the adhesive member 14 and the end face plate 4 and the adhesive strength between the adhesive member 14 and the filling member 11 are both higher than the adhesive strength between the filling member 11 and the end face plate 4. Therefore, the adhesive force between the closure 1 and the filling member 11 is improved, and the gas can be made more difficult to leak. As the adhesive member 14, for example, an acrylic foam double-sided tape, an acrylic, urethane, or epoxy adhesive can be used, and a rubber member that is attached to the surface 4c with an acrylic foam double-sided tape or various adhesives. Alternatively, a sponge member is used. Further, by arranging the adhesive member 14 in a shape surrounding the leakage portion L1 as described above, since the leaked gas is blocked by the adhesive member 14, the possibility of gas leaking from the closure 1 after repair is further reduced. Can be made. Note that the adhesive member 14 may be provided on the surface of the sleeve 2. Instead of the adhesive member 14 or simultaneously with the adhesive member 14, the adhesive strength between the filling member 11 and the closure 1 may be increased by treating the surface of the closure 1 with a primer.

  Next, a repair member that repairs the leaking portion L1 by forming the repair structure 10 will be described. As shown in FIG. 4, the repair member 15 includes the above-described filling member 11, air circulation pipe 12, and mold member 16. The mold member 16 functions as a mold that forms a space between the end face plate 4 and hardens the liquid filling member 11 poured into the space into a predetermined shape.

  The mold member 16 includes a fixing ring 17 that is fixed to the sleeve 2, a rotating ring 18 that is attached to the fixing ring 17, and a cap member 19 that covers an opening 18 f of the rotating ring 18. The fixing ring 17 and the rotating ring 18 are made of plastic, for example, and the cap member 19 is made of rubber, for example. Polyethylene, ABS, POM, or the like can be used as the material of the fixing ring 17 and the rotating ring 18, and silicone can be used as the material of the cap member 19. These materials are preferably materials that do not constitute strong adhesion to the filling member 11. Or you may provide mold release property by apply | coating a mold release agent etc. to the surface of these members.

  The fixing ring 17 is composed of two side wall members 17a formed in a semi-annular shape. A screw hole 17b for joining another side wall member 17a is provided at the circumferential end of the side wall member 17a. The two side wall members 17a are joined by inserting and screwing one screw 17c into the screw holes 17b of the two side wall members 17a. Thus, the fixing ring 17 is formed by joining the two side wall members 17a.

  The fixing ring 17 includes a convex portion 17 d and a concave portion 17 e extending in the circumferential direction, and the convex portion 17 d is provided for fitting the rotating ring 18. The concave portion 17 e is provided for fixing to the sleeve 2, and the fixing ring 17 is fixed to the sleeve 2 by fitting the concave portion 17 e to the rib 2 a of the sleeve 2.

  Similar to the fixed ring 17, the rotating ring 18 includes two side wall members 18a, a screw hole 18b, and a screw 18c, and is formed in an annular shape by joining the two side wall members 18a. Further, the rotating ring 18 includes a concave portion 18d fitted into the convex portion 17d of the fixing ring 17 and extending in the circumferential direction, and a concave portion 18e attached with the cap member 19 and extending in the circumferential direction.

  Each side wall member 18a of the rotating ring 18 is provided with a semicircular cutout 18g at its circumferential end, and when the two side wall members 18a are joined, the respective cutouts 18g are combined to form a circular shape. Become. The respective cutouts 18g that are combined to form a circular shape function as an inlet H (see FIG. 7) for injecting the liquid filling member 11 into the assembled mold member 16. By arranging the inlet H on the fitting surface of the two side wall members 18a, the side wall member 18a can be easily removed even when the filling member 11 is cured inside the inlet H. Become. Further, the rotational position of the rotary ring 18 with respect to the fixed ring 17 can be changed as appropriate, and the rotational position of the inlet H can be changed by changing the rotational position.

  The cap member 19 includes an annular covering portion 19a that closes the opening 18f of the rotating ring 18, and a tapered portion 19b that extends obliquely from the radially inner side of the covering portion 19a toward the cable C. For example, in FIG. 4, the cap member 19 provided with one taper portion 19b is illustrated, but the number and shape of the taper portion 19b may vary depending on the number and shape of the cables C. That is, the cap member 19 has a shape corresponding to the form of the cable C extending from the end face plate 4. For example, when the number of the cables C extending from the end face plate 4 is two, the two taper portions 19 b are provided. Provided.

  The covering portion 19 a of the cap member 19 is attached to the rotating ring 18 by being fitted into the recess 18 e of the rotating ring 18. The tapered portion 19b has a conical shape that is gradually reduced in diameter toward the distal end, and a circular opening 19f through which the cable C is inserted is formed at the distal end of the tapered portion 19b. Further, the cap member 19 includes a slit 19d extending in the axial direction thereof, and can be mounted from the side of the cable C by the slit 19d. The tip of the taper portion 19b is cut according to the outer diameter of the cable C to be applied.

  In the mold member 16 configured as described above, the opening 17f of the fixing ring 17, the opening 18f of the rotating ring 18, and the opening 19f of the cap member 19 correspond to a hole (second hole) through which the cable C passes. . Further, the fixing ring 17 and the rotating ring 18 can be diverted regardless of the type of the end face plate 4. Note that the shapes and structures of the fixing ring 17, the rotating ring 18, and the cap member 19 are not limited to those described above, and can be changed as appropriate. For example, the fixing ring 17 and the rotating ring 18 may be integrated.

  Next, a repair method for repairing the leakage portion L1 of the closure 1 using the repair member 15 will be described with reference to FIGS. As shown in FIG. 5, in the initial state before repair, the leakage portion L1 is located at a portion where the air tight tape T1 located between the hole 4a of the end face plate 4 and the cable C is provided.

  First, as shown in FIG. 6A, the air circulation pipe 12 that circulates the gas leaked from the leakage portion L1 is attached (step of attaching the air circulation pipe). Specifically, after the leakage portion L1 is specified by adhesion of soapy water or the like, the air circulation pipe 12 is attached in the vicinity of the leakage portion L1, and the gas leaking from the leakage portion L1 is guided to the air circulation pipe 12. As a method of attaching the air circulation pipe 12 to the leakage part L1, for example, one end of the air circulation pipe 12 may be inserted into the leakage part L1, or may be arranged away from the leakage part L1, and the area of the leakage part L1 If this is large to some extent, one end of the air circulation pipe 12 may be enlarged, and this enlarged part may be attached to the leakage portion L1.

  Further, an adhesive or adhesive clay-like admixture material is disposed around the leaking part L1 to which the air circulation pipe 12 is attached so that there is no gap, and the gas leaked from the leaking part L1 enters the air circulation pipe 12. Fix to be guided. As this adhesive, for example, an epoxy-based putty-like adhesive can be used, and as the admixture material, a material made by softening butyl rubber into a putty-like shape can be used. Examples of the admixture material include a material softened by adding oil such as mineral oil to butyl rubber and / or polyisopropylene. By attaching the air circulation pipe 12 to the leakage portion L1 in this way, the gas leaked from the leakage portion L1 is released from the tip 12a through the air circulation tube 12. Then, the air flow pipe 12 is extended along the cable C, and the tip 12 a of the air flow pipe 12 is drawn out of the end face plate 4.

  Further, an adhesive member 14 is disposed on the surface 4 c of the end face plate 4. At this time, the adhesive member 14 is arranged circumferentially so as to surround the leakage portion L1 (step of arranging the adhesive member). Further, the contact portion with the filling member 11 on the surface of the cable C (the portion in the vicinity of the end face plate 4 in the cable C) is polished with a polishing cloth or the like (polishing step). Note that either the step of arranging the adhesive member 14 or the step of polishing the cable C may be performed first, and depending on the case, either or both of the steps may be omitted.

  Next, the mold member 16 is attached to the closure 1 (step of attaching the mold member). As shown in FIGS. 6B and 6C, the two side wall members 17a are joined to fix the fixing ring 17 to the sleeve 2, as shown in FIGS. 6D and 7A. In this manner, the two side wall members 18 a are joined and the rotating ring 18 is attached to the fixing ring 17. Then, as shown in FIG. 7B, by attaching the cap member 19 to the rotating ring 18, the attachment of the mold member 16 to the closure 1 is completed.

  In addition, when attaching the fixing ring 17 and the rotation ring 18, it is preferable to attach so that the notch 18g of each side wall member 18a may face upward. By performing the attachment in this manner, the injection port H of the filling member 11 faces upward, so that the filling member 11 can be easily injected into the mold member 16. Further, when the cap member 19 is attached to the rotary ring 18, the tip 12 a of the air circulation pipe 12 is kept out of the cap member 19 and the slit 19 d of the cap member 19 is used to prevent the filling member 11 from leaking. A tape is wound around the cap member 19 so as to close the portion.

  In the state where the mold member 16 is attached to the closure 1 as shown in FIG. 7B, the filling member 11 is injected into the injection port H formed by the two notches 18g, and the injection is performed after a waiting time of a certain time. The filled member 11 is cured. In addition, when the filling member 11 is urethane foam, the said waiting time is about 10 to 15 minutes, for example.

  As shown in FIG. 7C, after the filling member 11 is cured, the mold member 16 is removed from the closure 1 to expose the cured filling member 11. And a viscoelastic material is arrange | positioned in the boundary part B1 of the filling member 11 and the cable C, and the boundary part B2 of the filling member 11 and the sleeve 2 (process to arrange a viscoelastic material). Thereafter, a tape having elasticity is wound around the arranged viscoelastic material, and the viscoelastic material is pressed against the cable C and the sleeve 2 (step of pressing the viscoelastic material). Examples of viscoelastic materials include a blended material obtained by softening butyl rubber into a putty, a two-component reaction type silicone gel, a low-altitude rubber, and the like, and exhibit fluidity when external force is applied. A material that can adhere to the surface and block the gas leakage path can be used.

  7D, the tip 12a of the air circulation pipe 12 extending from the cured filling member 11 along the cable C is bent to stop the release of gas from the air circulation pipe 12. After the distal end 12a is bent in this manner to stop the release of gas from the air circulation pipe 12, the air circulation pipe 12 extending from the filling member 11 and the cable C are wound around the tape member 13 as shown in FIG. . The air circulation pipe 12 and the cable C are wound around the tape member 13 to eliminate gas leakage from the closure 1, thereby completing the repair work. Before winding the tape member 13, a viscoelastic material may be disposed so as to cover the air circulation pipe 12, and the tape member 13 may be wound around the cable C together with the viscoelastic material. Furthermore, the bent portion of the air circulation pipe 12 may be disposed at the end of the filling member 11, and the end of the filling member 11 and the air circulation pipe 12 may be wound together by the tape member 13. Alternatively, the release of gas from the air circulation pipe 12 can be stopped by using a member that crushes a tube such as a tube clamp to stop the gas flow. In addition to the above, in order to protect the tape-wrapped part and tube from injury, a band-shaped protective material in which a glass cloth is impregnated with a curable resin, specifically from 3M Japan Co., Ltd. to the Armor Cast product name May be further arranged.

  As described above, according to the repair member 15 and the repair method according to the present embodiment, the mold member 16 includes the air circulation pipe 12 that communicates with the leakage portion L1 of the gas leaking from the closure 1 and distributes the gas leaking from the closure 1. In the state where the end face plate 4 is covered, the tip 12a of the air circulation pipe 12 is exposed to the outside. By disposing the air flow pipe 12 in this way, the gas leaking from the leakage portion L1 can be guided to the outside of the mold member 16.

  Then, while the gas leaking from the closure 1 is passed through the air circulation pipe 12, the liquid filling member 11 is filled into the space formed between the mold member 16 and the end face plate 4. When the liquid filling member 11 is filled in this way, the gas leaked from the closure 1 is discharged outward through the air circulation pipe 12, so that bubbles due to the leaked gas are generated in the filling member 11. do not do. Therefore, since the gas passage is not formed in the filling member 11 when the filling member 11 is cured, the leakage portion L1 can be reliably closed by closing the tip 12a of the air flow pipe 12 after the filling member 11 is cured. . In this way, the filling member 11 is cured between the end face plate 4 and the mold member 16, and the tip 12a of the air flow pipe 12 through which the leaking gas passes is closed, so that the repair work of the gas leakage is easily and reliably performed. be able to.

  Further, when the closure 1 is repaired, the mold member 16 covers a part of the side surface of the sleeve 2, and the filling member 11 is also filled into a space formed between the mold member 16 and the side surface of the sleeve 2. . Therefore, when the filling member 11 is cured, the filling member 11 has a shape that extends from the end face plate 4 to the side surface of the sleeve 2. As described above, the filling member 11 is filled not only on the outer side of the end face plate 4 but also on the side surface of the sleeve 2 to be cured, and the filling member 11 is turned around the side surface of the sleeve 2, so that the end portion of the closure 1 is filled. 11 is physically enclosed. Therefore, the gas leakage from the end of the closure 1 can be more reliably eliminated. Further, since the filling member 11 and the sleeve 2 are mechanically engaged, a larger locking force is generated in addition to the adhesive between the filling member 11 and the closure 1.

  An adhesive member 14 that adheres to the cured filling member 11 is disposed on the surface 4 c of the end face plate 4 or the surface of the sleeve 2. Thus, by arranging the adhesive member 14 on the contact surface between the filling member 11 and the closure 1, the adhesion of the filling member 11 to the closure 1 can be enhanced. Therefore, since the adhesive strength of the filling member 11 to the closure 1 is increased, the possibility of gas leaking from the closure 1 can be further reduced.

  Further, as described above, before the liquid filling member 11 is injected into the mold member 16, the contact portion with the filling member 11 on the surface of the cable C is polished. Thus, since the surface of the cable C is roughened by polishing the contact portion with the filling member 11 on the surface of the cable C, the adhesive strength between the cable C and the filling member 11 can be increased. Therefore, the adhesive strength of the filling member 11 to the cable C can be increased.

  Furthermore, since the repair member 15 according to the present embodiment fills the filling member 11 after the outside of the end face plate 4 is closed with the mold member 16, the type of the end face plate 4 and the outer diameter of the cable C can be reduced. Regardless, the filling member 11 can be filled in close contact with the cable C.

(Second Embodiment)
Next, the repair structure 20 according to the second embodiment will be described. Below, the description which overlaps with the description mentioned above is abbreviate | omitted. As shown in FIGS. 8 to 10, the repair structure 20 includes a bracket 21 fixed to the side surface of the sleeve 2, a washer 22 fitted into the cable C, and a pressure plate 23 attached to the outside of the washer 22 in the axial direction. A ring member 24 attached to the radially outer side of the pressure plate 23, a sponge member 25 that enters between the cable C and the pressure plate 23, a backup plate 26 that pushes the pressure plate 23 from the outside in the axial direction, and the end plate 4 And a filling member 28 filled in a space between the pressure plate 23 and the ring member 24. The washer 22, the pressure plate 23, and the ring member 24 function as a pressure member that pressurizes the filling member 28. Hereinafter, the washer 22, the pressure plate 23, and the ring member 24 may be collectively referred to as a pressure member.

  The filling member 28 has a certain degree of fluidity and plasticity at the time of filling, can be molded corresponding to the surface shape of the end face plate 4 and the surface of the cable C, and is an elastic material after curing. The filling member 28 may be, for example, a curable material that is liquid at the time of filling, or may be a material that is in a clay state at the time of filling and hardens into a rubber shape after filling. Hereinafter, an example in which the filling member 28 is a liquid curable material when filled will be described. In this case, as the filling member 28, a silicone-based resin material that cures with time can be used, and specifically, a two-component mixed silicone resin can be used. In the case of the filling member 28 that is in a liquid state at the time of filling, the space between the end face plate 4, the washer 22, the pressure plate 23, and the ring member 24 can be filled without a gap. Therefore, the hardened filling member 28 is in close contact with the cable C, the end face plate 4, the washer 22, the pressure plate 23, and the ring member 24 regardless of the type and unevenness of the end face plate 4 and the outer diameter of the cable C used. Molded.

  The bracket 21 has an L shape in side view, and has a surface having a screw hole 21 a into which a bolt 27 extending from the ring member 24 is screwed and a surface in contact with the side surface of the sleeve 2. The bracket 21 is sized to fit between the two ribs 2a arranged in the axial direction on the side surface of the sleeve 2, and is arranged to fit between the two ribs 2a. Four brackets 21 are provided at equal intervals in the circumferential direction, and the four brackets 21 are bound by the band member 5 and fixed to the closure 1.

  As a material of the washer 22, for example, plastic such as polypropylene is used. An end surface 23 a located on the inner side in the axial direction of the pressure plate 23 is brought into contact with the surface 22 a of the washer 22. The washer 22 is provided with a slit 22b that can be attached to the cable C from the side, and the washer 22 is attached from the side of the cable C by widening the washer 22 with the slit 22b. The washer 22 can cut the inner peripheral portion 22c in the circumferential direction, and the diameter of the inner peripheral portion 22c can be adjusted by this cutting. Further, the washer 22 has a function of closing the hole 23 b of the pressure plate 23 from the inner side in the axial direction and a function of compressing the filling member 28.

  The pressure plate 23 is formed in a substantially annular shape. Similar to the end face plate 4, the pressure plate 23 is formed by bolting two semicircular side wall members. The pressure plate 23 is attached to face the end face plate 4. The pressure plate 23 includes a hole (third hole) 23b through which the cable C is inserted, and an annular recess 23c into which the ring member 24 is fitted from the outside in the radial direction. A circular hole is formed in the hole 23 b of the pressure plate 23 by bolting the two side wall members constituting the pressure plate 23, and the cable C is inserted therethrough. The diameter of the hole 23b is longer than the outer diameter of the cable C. The shape of the pressure plate 23 can be the same as that of the end face plate 4, but may be different from that of the end face plate 4. When the end face plate 4 is used as the pressure plate 23, it is not necessary to newly prepare a pressure plate, and this embodiment can be implemented at low cost.

  The ring member 24 is provided to pressurize the cured filling member 28. The ring member 24 includes a semi-annular side wall member 24 a disposed along the circumferential direction of the pressure plate 23. The two side wall members 24a are joined by bolt joining, for example, similarly to the side wall member 17a of the fixing ring 17. Further, since the two side wall members 24a are joined with the sponge member interposed therebetween, leakage of the filling member 28 from between the side wall members 24a is prevented. By joining the two side wall members 24a in this way, an annular ring member 24 having a hole 24f through which the cable C passes is formed.

  The ring member 24 includes a hole portion through which the bolt 27 is inserted, and the hole portion penetrates in the axial direction. Further, for example, seven hole portions are provided in one side wall member 24a, and the seven hole portions are arranged at equal intervals in the circumferential direction. The bolt 27 is inserted into the hole, and the inserted bolt 27 is screwed into the screw hole 21 a of the bracket 21, whereby the ring member 24 and the sleeve 2 are connected in the axial direction via the bracket 21.

  One of the two side wall members 24a is provided with an injection port 24h (see FIG. 13B) for injecting the filling member 28 into the inside and a lid member 24j for closing the injection port 24h. The inlet 24h and the lid member 24j are provided at the circumferential end portion of the side wall member 24a, and are located above when the two side wall members 24a are joined. The lid member 24j is, for example, a rotary type, and the inlet 24h can be opened and closed by rotating the lid member 24j with respect to the inlet 24h.

  The ring member 24 includes an annular convex portion 24e that is fitted in the annular concave portion 23c of the pressure plate 23 in the radial direction. The annular convex portion 24e extends in the circumferential direction and projects radially inward. The pressure applied to the filling member 28 can be adjusted by fitting the annular protrusion 24e into the annular recess 23c and adjusting the tightening degree of the bolt 27.

  The sponge member 25 blocks the gap between the hole 23 b of the pressure plate 23 and the cable C and suppresses the leakage of the filling member 28. Further, since the washer 22 presses the sponge member 25 on the inner side, the sponge member 25 is prevented from moving inward in the axial direction from the gap.

  The backup plate 26 is formed in an annular shape, and is provided on the outer side in the axial direction of the ring member 24. The backup plate 26 is provided to support the pressure applied by the ring member 24 and to increase the pressure area applied to the pressure plate 23 by the ring member 24. By this backup plate 26, the force from the ring member 24 is efficiently transmitted to the pressure plate 23, and the filling member 28 can be stably pressurized. The backup plate 26 includes an annular contact surface 26 a that contacts the ring member 24 from the outside in the axial direction, and an annular contact surface 26 b that contacts the pressure plate 23 from the outside. 26a and 26b are stepped in the radial direction. Further, the backup plate 26 is fixed to the ring member 24 from the outer side in the axial direction by a plurality of screws 26c arranged in the circumferential direction.

  A repair method for repairing the leakage portion L2 of the closure 1 by forming the repair structure 20 configured as described above will be described with reference to FIGS. As shown in FIG. 11, the leakage portion L2 is located between the hole 4a of the end face plate 4 and the cable C in the initial state before repair.

  First, as shown in FIG. 12 (a), as in the first embodiment, the air circulation pipe 12 is attached, and a clay-like material having an adhesive or tackiness around the leakage portion L2 to which the air circulation pipe 12 is attached. The admixture material is disposed so as not to have a gap, and is fixed so that the gas leaked from the leakage portion L2 is guided to the air circulation pipe 12. Next, as shown in FIGS. 12B and 12C, the four brackets 21 are fixed to the sleeve 2, and the washer 22 is disposed outside the end face plate 4. The washer 22 is disposed on the outer side in the axial direction of the hole 4 a of the end face plate 4.

  As illustrated in FIG. 12D, the sponge member 25 is wound around the cable C, and the sponge member 25 is disposed outside the washer 22 in the axial direction. Then, as shown in FIG. 13A, the pressure plate 23 is disposed outside the washer 22 in the axial direction, and the sponge member 25 is inserted into the hole 23 b of the pressure plate 23.

  Thereafter, as shown in FIG. 13B, a leakage preventing sponge member is disposed in the annular recess 23c, and the annular protrusions 24e of the side wall members 24a are fitted into the annular recesses 23c from the outside in the radial direction. Then, the two side wall members 24a are joined to form the ring member 24, the bolt 27 is inserted into the hole of the ring member 24 from the outside in the axial direction, and the bolt 27 is screwed into the screw hole 21a of the bracket 21, The ring member 24 is connected to the bracket 21.

  Then, the backup plate 26 is pressed against the pressure plate 23 and the ring member 24 from the outside in the axial direction. In this state, the backup plate 26 is fixed to the ring member 24 by the screws 26c. At this time, the lid member 24j may be removed to expose the injection port 24h.

  As shown in FIG. 13C, the funnel R is inserted into the exposed inlet 24h, and the liquid filling member 28 is injected from above. Then, the filling member 28 injected after a certain waiting time is cured. After the filling member 28 is cured, the tightening degree of the bolt 27 with respect to the screw hole 21a of the bracket 21 is adjusted to pressurize the filling member 28 in the axial direction. Specifically, for example, the filling member 28 having a thickness of about 10 to 15 mm in the thinnest place in the axial direction is compressed by about 5 mm. By pressing the filling member 28 in the axial direction, the filling member 28 is compressed in the axial direction. On the other hand, the filling member 28 tends to expand in the radial direction. However, since the side wall member 24a is provided with a wall extending in the circumferential direction, expansion of the filling member 28 in the radial direction is restricted. Therefore, the filling member 28 is pressed and compressed also in the radial direction. Thereby, since the filling member 28 produces high surface pressure in the interface with the end surface plate 4, the pressurizing plate 23, the cable C, and each side wall member 24a, the gas leakage path is blocked.

  Further, as shown in FIG. 13D, after the filling member 28 is cured, the tip 12a of the air circulation pipe 12 extending from the pressure plate 23 along the cable C is bent as in the first embodiment. A tube clamp is attached to stop the release of gas from the air circulation pipe 12. Then, the tape member 13 is wound around the cable C and the air circulation pipe 12 as shown in FIG. As described above, the pressurization and compression of the filling member 28 by the pressure member and the winding of the tape member 13 around the cable C and the air circulation pipe 12 are completed. And like 1st Embodiment, before winding the tape member 13, a viscoelastic material may be arrange | positioned so that the air distribution pipe 12 may be covered, and the tape member 13 may be wound around the cable C with a viscoelastic material. Furthermore, the release of gas from the air flow pipe 12 can be stopped by using a member such as a tube clamp that crushes the tube to stop the flow of gas. In addition to the above, a band-shaped protective material in which a glass cloth is impregnated with a curable resin may be further disposed for the purpose of protecting the portion where the tape is wound and the tube from being damaged.

  As described above, the repair structure 20 and the repair method according to the second embodiment have a structure in which the pressure member is mechanically fixed and does not depend on the adhesive force of the filling member such as urethane foam. Therefore, the finish of the repair work can be improved regardless of the material and surface state of the filling member, the end face plate 4, the sleeve 2, and the cable C.

  Further, in the repair structure 20 and the repair method according to the second embodiment, the gas leaked from the closure 1 passes through the air circulation pipe 12 when the liquid filling member 28 is filled, as in the first embodiment. Therefore, foaming due to the leaked gas in the filling member 28 does not occur. Therefore, since the gas passage is not formed in the filling member 28 when the filling member 28 is cured, the leakage portion L2 can be easily and reliably blocked by closing the tip 12a of the air flow pipe 12 after the filling member 28 is cured. Can do. Therefore, the same effect as the first embodiment can be obtained. In the second embodiment, as described above, the filling member 28 may be in the form of clay at the time of filling, and in this case, the air circulation pipe 12 is unnecessary.

  In the second embodiment, the space between the cable C and the hole 4a is directly covered by the filling member 28, and the filling member 28 is pressurized from the outside by the pressure member. As described above, since the gap between the hole 4a and the cable C is closed by the filling member 28, it is possible to easily and reliably repair the gas leakage that leaks from the gap.

  Moreover, the repair structure 20 according to the second embodiment is filled with the filling member 28 after the outer side of the end face plate 4 is closed with the pressure member. Therefore, the repair structure 20 can be applied to end face plates other than the end face plate 4, and can be applied to various end face plates.

  Furthermore, in 2nd Embodiment, the pressurization member contains the side wall member 24a arrange | positioned along the circumferential direction of the end surface board 4. FIG. Therefore, the pressure member can be easily formed by joining the side wall member 24a from the side of the cable C. This effect is common to all parts having a side wall member.

(Third embodiment)
Next, the repair structure 30 according to the third embodiment will be described. As shown in FIGS. 14 and 15, in the repair structure 30, the structure of the end face plate 34, the pressure plate 43, and the ring member 44, and the three cables C extend from the end face plate 34 and the pressure plate 43. This is different from the second embodiment in that it includes three rod-like pressure frames 46 instead of the backup plate 26. In the third embodiment, since there are many portions that overlap with the second embodiment except for the above points, the description of the overlapping portions is omitted.

  Each of the end face plate 34 and the pressure plate 43 includes three holes 34a and 43a through which the three cables C are inserted. The arrangement of the holes 34a and 43a when viewed from the axial direction is, for example, an equilateral triangle. Further, the washer 22 and the sponge member 25 of the second embodiment are provided for the respective holes 34a and 43a.

  The ring member 44 is constituted by two semi-annular side wall members 44a, and the two side wall members 44a are joined by bolt joining. Thus, the ring member 44 is formed by joining the two side wall members 44a. The ring member 44 includes a screw hole 44d for a bolt 47a that is exposed to the outside in the axial direction and arranged in parallel in the circumferential direction. Further, the ring member 44 includes an injection port 44e through which the filling member 28 is injected on the outer peripheral surface thereof. The above pressure plate 43, ring member 44, pressure frame 46, and washer 22 function as a pressure member.

  The pressure frame 46 includes an insertion hole for inserting a bolt 47a to be screwed into the screw hole 44d, and a screw hole for screwing a bolt 47b for pressing the pressure plate 43 from the outside in the axial direction. One insertion hole is provided at each end of the pressure frame 46, and the screw hole is provided at the center of the pressure frame 46.

  When viewed from the axial direction, the pressure frame 46 extends linearly between one point on the circumference of the annular ring member 44 and another point on the same circumference. The pressure condition on the pressure plate 43 can be adjusted by screwing the bolt 47b into the screw hole of the pressure frame 46, pressing the tip of the bolt 47b against the pressure plate 43, and adjusting the tightening condition of the bolt 47b. Further, since the three pressure frames 46 are provided at equal intervals in the circumferential direction, the pressure plate 43 can be evenly pressurized in the circumferential direction. Moreover, the recessed part extended in the circumferential direction is provided in the inner surface of the side wall member 44a. The ring member 44 is fixed to the closure 1 by fitting the concave portion to a convex portion located at the end of the sleeve 2 and bolting each side wall member 44a. That is, the side wall member 44a has the function of a bracket in the second embodiment.

  Next, a repair method for repairing the leakage portion L3 of the closure 1 by forming the repair structure 30 will be described with reference to FIGS. The repair method described here is the same as that of the second embodiment except that the three cables C are extended and pressurization is performed using the pressurization frame 46. .

  As shown in FIG. 16 (a) and FIG. 16 (b), in the initial state before repair, the leakage portion L3 is located between the one hole portion 34a and the cable C, and the leakage portion L3 The air circulation pipe 12 is attached, and an adhesive or sticky clay-like admixture material is arranged around the leakage portion L3 so that there is no gap, and the gas leaked from the leakage portion L3 is guided to the air circulation tube 12. To fix.

  Next, as shown in FIGS. 17A to 17C, the washer 22 is disposed outside each end face plate 34, and the sponge member 25 is wound around each cable C so that the sponge member 25 is attached to the washer 22. Arrange on the outside in the axial direction. Thereafter, the pressure plate 43 is arranged so that each sponge member 25 enters each hole 43 a of the pressure plate 43. Then, as shown in FIGS. 17D and 18A, the two side wall members 44 a are joined from the side to form the ring member 44 on the radially outer side of the pressure plate 43.

  As shown in FIGS. 18B and 18C, the three pressure frames 46 are fixed to the outside in the axial direction of the ring member 44 by bolt joining. Then, the bolt 47 b is screwed into the screw hole of each pressure frame 46 so that the tip of the bolt 47 b is in contact with the pressure plate 43. Thereafter, the funnel R is inserted into the injection port 44e, and the liquid filling member 28 is injected from above.

  After the injected filling member 28 is cured, the cured filling member 28 is compressed by screwing a bolt 47b into the screw hole of each pressure frame 46 and pressing the pressure plate 43 from the outside in the axial direction. Thereafter, as shown in FIGS. 18D and 14, the repair work is completed by bending the tip 12 a of the air circulation pipe 12 and winding the tape member 13 around the cable C and the air circulation pipe 12. And like 2nd Embodiment, before winding the tape member 13, a viscoelastic material may be arrange | positioned so that the air distribution pipe 12 may be covered, and the tape member 13 may be wound around the cable C with a viscoelastic material. Furthermore, the release of gas from the air circulation pipe 12 can be stopped using a member that crushes the tube and stops the gas flow. In addition to the above, a band-shaped protective material in which a glass cloth is impregnated with a curable resin may be further arranged.

  As described above, in the third embodiment, similarly to the first and second embodiments, the repair work of the leakage portion L3 can be easily and reliably performed. Furthermore, in the third embodiment, three pressure frames 46 are provided, and the pressure plate 43 is pressed by bolts 47 b that are screwed into the screw holes of the pressure frames 46. Therefore, the repair structure 30 having a simpler configuration than that of the second embodiment can be obtained.

  In the first to third embodiments described above, the leaking portions L1 to L3 are collectively covered by the cured filling member 11 or the pressure member. Therefore, it can be efficiently repaired when there are a plurality of leakage points. Furthermore, even when there is no leakage at the time of repair and leakage occurs after repair, gas leakage can be prevented. In addition, the gas leakage can be repaired by leakage from any location of the end plate pressed by the filling member 28.

(Fourth embodiment)
Next, the repair structure 50 according to the fourth embodiment will be described. As shown in FIGS. 19 to 21, the repair structure 50 includes a fixing member 51 fixed to the end face plate 54, and a pressure member 52 supported by the fixing member 51 so as to be movable in the extending direction of the cable C. An adapter 53 interposed between the fixing member 51 and the pressure member 52, an end face plate 54 having two holes 54a through which the two cables C are inserted, a hole 54a of the end face plate 54, and the cable C And a filling member 55 that covers the gap between them. The end face plate 54 is different from the end face plate 4 of the first embodiment in that it has two holes 54a.

  The fixing member 51 includes a semi-annular side wall member 51a. When the two side wall members 51a are joined from the side of the cable C, the annular fixing member 51 is formed. The side wall member 51 a includes an engaging portion 51 b that protrudes inward in the axial direction and has a distal end bent inward in the radial direction. By fitting the distal end of the engaging portion 51 b into the hole 54 b of the end face plate 54, the side wall member 51 a is provided. The fixing member 51 is fixed to the end face plate 54.

  The fixing member 51 has screw holes into which bolts 57 that pressurize the filling member 55 are screwed, and four screw holes are arranged at equal intervals in the circumferential direction. These screw holes are exposed to the outside in the axial direction, and the pressure member 52 is connected to the fixing member 51 by screwing the bolt 57 from the outside in the axial direction.

  Similar to the fixing member 51, the pressure member 52 includes a semi-annular side wall member 52a, and is formed in an annular shape by joining two side wall members 52a from the side of the cable C. Each side wall member 52a includes a flange portion 52b, and the flange portion 52b is provided with a hole portion through which the bolt 57 is inserted. When the two side wall members 52a are joined, the four holes are arranged at equal intervals in the circumferential direction.

  The adapter 53 also includes a semi-circular side wall member 53a, and the adapter 53 is formed in an annular shape by joining the two side wall members 53a. The adapter 53 is a member that enters between the cable C and the fixing member 51 and is provided to uniformly transmit the pressure applied by the pressure member 52 to the filling member 55 in the circumferential direction. Specifically, as the pressure member 52 moves, the end surface of the pressure member 52 comes into contact with the surface of the adapter 53 in the axial direction, and the adapter 53 uniformly presses the filling member 55 from the outside by this contact. A plurality of adapters 53 are prepared according to the size of the cable C. By selecting the adapter 53 having an appropriate size according to the outer diameter of the cable C, various types of adapters 53 can be externally connected with one type of fixing member and pressure member. It is possible to correspond to the diameter. Alternatively, it is possible to prepare a plurality of pressure members according to the outer diameter of the cable C. In this case, the filling member can be directly pressurized by the pressure member without using the adapter 53.

  The filling member 55 is made of a material that is clay-like when filled and hardens into a rubber-like shape after filling. As the filling member 55, a curable elastic resin that reacts with two liquids and becomes rubbery can be used. For example, a silicone-based material can be used. The filling member 55 is embedded in a gap between the hole 54a of the end face plate 54 and the cable C and pressed from the outside, and is provided to seal the gap. The filling member 55 is in a clay state when filled, and flows when pressurized. Therefore, by pushing the mixed filler between the hole 54a and the cable C, the surface of the cable C, the shape of the hole, and the surface of the air tight tape can be closely packed. The filling member 55 used in the present embodiment is clay-like, and is preferably soft enough to be easily changed in shape by hand and has a viscosity such that leaking gas cannot penetrate. When such a filling member is used, the gas leaked from the leakage portion L4 is released through the interface between the filling member 55 and the air tight tape, the end face plate 54, and the cable C. For this reason, the filling member 55 can be disposed without attaching the air circulation pipe 12.

  Next, a repair method for repairing the leakage portion L4 of the closure 1 by forming the repair structure 50 will be described with reference to FIGS. As shown in FIG. 22A, in the initial state before repair, the leakage portion L4 is located in one of the two hole portions 54a of the end face plate 54.

  First, as shown in FIG. 22B, FIG. 23, and FIG. 24, a portion between the hole 54a where the leakage portion L4 is located and the cable C is filled with a clay-like filling member 55 (the filling member is replaced with the filling member 55). Placing step). At this time, the filling member 55 is uniformly filled on the outside of the air tight tape T1, and the leakage portion L4 is closed from the outside in the axial direction.

  Next, as shown in FIGS. 25A and 25B, the fixing member 51 is fixed on the outer side in the axial direction of the filling member 55. That is, two side wall members 51 a are joined to form an annular fixing member 51, and each locking portion 51 b of the fixing member 51 is fitted into the hole portion 54 b of the end face plate 54 to fix the fixing member 51 to the end face plate. 54 is fixed.

  Subsequently, as shown in FIGS. 26A and 26B, two side wall members 53a are joined from the side of the cable C to form an annular adapter 53, and the adapter 53 is fixed. The adapter 53 is placed inside the member 51 and disposed outside the filling member 55 in the axial direction.

  After the adapter 53 is arranged, as shown in FIG. 26 (c), two side wall members 52a are joined from the side of the cable C to form the annular pressure member 52, and the flange portion 52b. Bolts 57 are inserted through the holes. Then, as shown in FIG. 26 (d), each bolt 57 is screwed into each screw hole of the fixing member 51, and the end surface of the pressure member 52 is brought into contact with the surface of the adapter 53. In this state, the filling member 55 is compressed from the outside in the axial direction while adjusting the pressure on the filling member 55 by adjusting the tightening degree of the bolt 57 and adjusting the pressure on the pressure member 52 ( A step of pressurizing the filling member). The compressed filling member 55 generates a high surface pressure at the interface with the air tight tape T1, and prevents gas leakage from the interface. The filling member 55 is compressed in the axial direction and simultaneously expands in the radial direction. However, the expansion of the filling member 55 in the radial direction is restricted by the cable C and the inner wall of the hole portion 54a, and the filling member 55 also receives a compressive force in the radial direction. By this compressive force, the filling member 55 generates a high surface pressure at the interface between the surface of the cable C and the inner surface of the hole 54a, thereby preventing gas leakage.

  As described above, according to the repair structure 50 and the repair method according to the fourth embodiment, the leaking portion L4 from which gas has leaked is directly closed by the filling member 55, and the filling member 55 is pressurized from the outside by the pressurizing member 52. ing. Thus, since the leaking part L4 between the hole 54a and the cable C is blocked by the filling member 55, the repairing work of the leaking part L4 can be performed easily and reliably. Further, since the gap between the hole 54a and the cable C is locally blocked by the filling member 55, the repair can be effectively performed when the leaking portion is the gap between the cable C and the hole 54a. Thus, a small and simple repair structure 50 can be obtained.

  Moreover, in 4th Embodiment, since the filling member 55 is pushed directly in into the leaking part L4, it is hard to be influenced by the kind of closure or an end surface board. That is, the repair structure 50 can be applied to various closures and end face plates.

  In the repair structure 50 according to the fourth embodiment, since the fixing member 51 is fixed to the end face plate 54, the fixing member 51 does not move even if the cable C is displaced after the repair work. Therefore, it is possible to stably pressurize the pressure member 52 by tightening the bolts 57.

(Fifth embodiment)
Next, the repair structure 60 according to the fifth embodiment will be described. As shown in FIGS. 27 and 28, the fifth embodiment includes a fixing member 61 and a pressing member 62 that are different in structure from the fixing member 51 and the pressing member 52 of the fourth embodiment. In the fifth embodiment, the end face plate 54 and the filling member 55 are the same as those in the fourth embodiment, and a detailed description of the end face plate 54 and the filling member 55 is omitted.

  The fixing member 61 functions as a cable gripping member that grips the cable C from the side. The fixing member 61 is formed in an annular shape by joining two semicircular annular side wall members 61a. The side wall member 61a includes a screw hole exposed in the radial direction and a bolt 61c screwed into the screw hole. When the two side wall members 61a are joined, the three bolts 61c are arranged at equal intervals in the circumferential direction.

  A pressing portion 61d that presses the cable C from the outside in the radial direction is provided at the inner end of the bolt 61c screwed into the screw hole. The holding part 61d includes a plate-like part 61e fixed to the tip of the bolt 61c, and a protruding part 61f that protrudes from the plate-like part 61e and bites into the outer cover of the cable C (see FIG. 33A).

  Moreover, the side wall member 61a is provided with a flange portion 61g, and a plurality of screw holes into which the bolts 64 are screwed are provided in the flange portion 61g. These screw holes penetrate in the axial direction. When the two side wall members 61a are joined, these four screw holes are arranged at equal intervals in the circumferential direction.

  The pressure member 62 is attached so as to be movable in the axial direction (the extending direction of the cable C). The pressure member 62 is formed in a stepped annular shape by joining two semicircular annular side wall members 62a. The pressing member 62 includes an annular pressing portion 62b that presses the filling member 55 from the outside in the axial direction, and a flange portion 62c that expands on the opposite side of the pressing portion 62b. The surface located on the fixing member 61 side of the flange portion 62 c is an abutting surface with which the tip of the bolt 64 screwed into the screw hole of the fixing member 61 abuts.

  Next, a repair method for repairing the leakage portion L5 of the closure 1 by forming the repair structure 60 will be described with reference to FIGS. As shown in FIG. 29A, in the initial state before repair, the leakage portion L5 is located in one of the two hole portions 54a of the end face plate 54, as in the fourth embodiment. Since the repair method according to the fifth embodiment has many portions that overlap with the repair method according to the fourth embodiment, the overlapping portions will be briefly described.

  First, as shown in FIG. 29 (b), FIG. 30 and FIG. 31, a clay-like filling member 55 is filled in a portion between the hole 54a where the leakage portion L5 is located and the cable C. Then, as shown in FIGS. 32A and 32B, the fixing member 61 is fixed on the outer side in the axial direction of the filling member 55. At this time, the two side wall members 61 a are joined to form the annular fixing member 61, and the fixing member 61 is formed at a position where a space K is formed between the end face plate 54 and the pressure member 62. Is fixed to the cable C.

  Specifically, as shown in FIGS. 33A and 33B, bolts 61 c are screwed into the screw holes of the fixing member 61. Then, the fixing member 61 is fixed to the cable C by causing the protruding portion 61 f of the holding portion 61 d located at the inner end of the bolt 61 c to bite into the surface of the cable C.

  After the fixing member 61 is fixed to the cable C as described above, in the space K between the end face plate 54 and the fixing member 61, as shown in FIGS. 34 (a) and 34 (b), 2 The pressure member 62 is attached by joining the individual side wall members 62 a from the side of the cable C. Then, the pressing portion 62 b of the pressing member 62 is brought into contact with the filling member 55, and the bolt 64 is screwed into the screw hole of the fixing member 61 so that the tip of the bolt 64 is brought into contact with the surface of the pressing member 62. In this state, the tightening degree of the bolt 64 is adjusted to adjust the pressing force of the pressing member 62, and the filling member 55 is compressed from the outside in the axial direction.

  As described above, according to the repair structure 60 and the repair method according to the fifth embodiment, the leaking portion L5 from which gas has leaked is directly closed by the filling member 55, and the filling member 55 is pressurized from the outside by the pressurizing member 62. ing. Therefore, similarly to the fourth embodiment, the repair work of the leakage portion L5 can be performed easily and reliably, and a small and simple repair structure 60 can be obtained, which can be applied to various closures and end face plates. Is possible. Furthermore, in the repair structure 60 according to the fifth embodiment, the filling member 55 is directly pressurized by the pressing member 62, and no component corresponding to the adapter 53 of the fourth embodiment is required. It is possible to reduce the number of parts.

  The fixing member 51 of the fourth embodiment is fixed to the end face plate 54, and the fixing member 61 of the fifth embodiment is fixed to the cable C. However, as a fixing member that movably supports the pressurizing member, a sleeve is used. 2 may be fixed. Thus, even when the fixing member fixed to the sleeve 2 is used, the same effect as in the fourth and fifth embodiments can be obtained.

  In the fourth and fifth embodiments described above, the filling member 55 is pushed directly into the leakage portions L4 and L5 as described above. Therefore, when the areas of the leaking portions L4 and L5 are small, the leaking portions L4 and L5 can be locally repaired, and the size of the repair structures 50 and 60 can be reduced. Therefore, when the leaked portion is a gap between the cable C and the hole 54a, the repair can be effectively performed, and a small and simple repair structure can be obtained.

  In the fourth and fifth embodiments, for example, as shown in FIG. 30, the example in which the filling member 55 is filled in the entire circumference in the gap between the cable C and the hole 54 a has been described. However, it is not necessary to fill the entire circumference of the gap with the filling member 55, or the filling member 55 may be partially filled. For example, as shown in FIG. 35, the filling member 55 is filled in an arc portion having an angle θ (θ is larger than 0 ° and smaller than 360 °) in the gap formed in an annular shape, and the remaining 360 is filled. A suppressing member 81 that suppresses deformation of the filling member 55 may be inserted into the arc portion of ° -θ. In this case, when pressurizing the filling member 55, the adapter 82 molded in a size and shape that can pressurize only the filling member 55 is disposed on the outer side in the axial direction, and pressurization is performed by the pressurizing member 52.

  The present invention has been described in detail based on the embodiments. However, the present invention is not limited to the above embodiment. The present invention can be variously modified without departing from the gist thereof. For example, in the first to fifth embodiments, the example in which the leakage portions L1 to L5 are located between the cable C and the hole portion of the end face plate has been described, but the position of the leakage portion is not limited to this example. As described above, the leakage portion may be between the end face plate and the sleeve, or between each component constituting the end face plate. As described above, the leaking portion may be anywhere as long as gas leaks from the closure, and the present invention is applicable to any leaking portion where gas leaks from the closure. .

DESCRIPTION OF SYMBOLS 1 ... Closure, 2 ... Sleeve, 2a ... Rib, 3 ... Screw, 4, 34, 54 ... End face plate, 4a, 34a, 43a, 54a ... Hole (first hole), 4b ... Side wall member, 5 ... Band Members 10, repair structures 11, filling members 12, air flow pipes, 12 a, tips, 13 tape members, 14 adhesive members, 15 repair members, 16 mold members, 17 fixing rings, 17 a , 18a ... side wall member, 17f, 18f, 19f ... opening (second hole), 18 ... rotating ring, 19 ... cap member, 19a ... covering portion, 19b ... taper portion, 19d ... slit, 20, 30, 50, 60 ... Repair structure, 21 ... Bracket, 21a ... Screw hole, 22 ... Washer, 22b ... Slit, 23, 43 ... Pressure plate, 23b ... Hole (third hole), 24, 44 ... Ring member, 24a, 44a ... sidewall member, 2 f ... hole, 24h ... injection port, 24j ... lid member, 25 ... sponge member, 26 ... backup plate, 27 ... bolt, 28 ... filling member, 46 ... pressure frame, 47a, 47b ... bolt, 51, 61 ... Fixing member, 51a, 61a ... side wall member, 51b ... locking part, 52, 62 ... pressure member, 52a, 62a ... side wall member, 52b ... flange part, 53 ... adapter, 53a ... side wall member, 55 ... filling member, 57 ... Bolt, 61d ... Presser part, 61e ... Plate-like part, 61f ... Projection part, 61g ... Flange part, 62b ... Pressing part, 62c ... Flange part, 64 ... Bolt, 81 ... Suppression member, 82 ... Adapter, B1, B2 ... Boundary part, C ... Cable, H ... Inlet, K ... Space, L1 to L5 ... Leakage part, R ... Funnel, S ... Connection part, T1 ... Air tight tape.

Claims (18)

A cylindrical sleeve that accommodates a connecting portion to which at least two cables are connected, and a first hole that allows the cable to pass therethrough, and the sleeve is sealed in a state where the cable is passed through the first hole. A member for repairing a closure provided with an end face plate,
An air circulation pipe that communicates with a leakage portion of the gas leaking from the closure and distributes the gas leaked from the closure;
A mold member for covering the end face plate in a state where the cable is passed through the second hole portion, with the second hole portion for passing the cable, and with the tip of the air circulation pipe exposed to the outside;
A liquid resin material that fills the space formed between the end face plate and the mold member, and a filling member that cures over time.
Closure repair material. The mold member covers a part of the side surface of the sleeve,
The filling member is filled in a space formed between the mold member and a side surface of the sleeve.
The member for repairing a closure according to claim 1. An adhesive member that is provided on a surface of the end face plate or the surface of the sleeve and adheres to the cured filling member;
A member for repairing a closure according to claim 1 or 2. A cylindrical sleeve that accommodates a connecting portion to which at least two cables are connected, and a first hole that allows the cable to pass therethrough, and the sleeve is sealed in a state where the cable is passed through the first hole. A closure repair structure comprising an end face plate,
A filling member disposed opposite the end face of the closure having a leakage portion;
A pressurizing member that pressurizes the filling member from the outside of the end face plate;
Closure repair structure with The pressure member has a third hole portion through which the cable passes and is attached to the end face plate in a state in which the cable is passed through the third hole portion,
The filling member is filled in a space formed between the end face plate and the pressure member.
The closure repair structure according to claim 4. The pressure member includes a side wall member disposed along a circumferential direction of the end face plate,
The closure repair structure according to claim 5. An air circulation pipe that communicates with a leakage portion of gas leaking from the closure and circulates gas leaked from the closure;
The closure repair structure according to any one of claims 4 to 6. The filling member is made of a curable material that is liquid at the time of filling,
The closure repair structure according to any one of claims 4 to 7. The filling member is made of a material that is clay-like at the time of filling and hardens into a rubber-like shape after filling.
The closure repair structure according to claim 4. A fixing member fixed to at least one of the cable, the sleeve, and the end face plate;
The pressing member is supported by the fixing member so as to be movable in the extending direction of the cable.
The closure repair structure according to any one of claims 4 to 9. A cylindrical sleeve that accommodates a connecting portion to which at least two cables are connected, and a first hole that allows the cable to pass therethrough, and the sleeve is sealed in a state where the cable is passed through the first hole. A method of repairing a closure with an end face plate,
A step of attaching an air circulation pipe communicating with a leakage portion of gas leaking from the closure and circulating gas leaked from the closure;
Attaching a mold member that has a second hole through which the cable is passed and covers the end face plate in a state in which the cable is passed through the second hole, with the tip of the air circulation pipe exposed to the outside; ,
Filling a space formed between the end face plate and the mold member with a filling member that is a liquid resin material and hardens over time;
Clogging a tip of the air circulation pipe exposed to the outside;
Repair method for closures with Disposing a viscoelastic material at a boundary portion between the filling member and the cable and / or a boundary portion between the filling member and the sleeve after the filling member is cured;
Winding the elastic tape around the viscoelastic material and pressing the viscoelastic material against the cable or the sleeve;
The closure repair method according to claim 11, further comprising: Before the step of filling the space with the filling member, the method further comprises a step of arranging an adhesive member that adheres to the cured filling member on the surface of the end plate or the surface of the sleeve.
The closure repair method according to claim 11 or 12. Before the step of filling the space with the filling member, further comprising the step of polishing the contact portion with the filling member on the surface of the cable,
The repair method of the closure as described in any one of Claims 11-13. A cylindrical sleeve that accommodates a connecting portion to which at least two cables are connected, and a first hole that allows the cable to pass therethrough, and the sleeve is sealed in a state where the cable is passed through the first hole. A method of repairing a closure with an end face plate,
Disposing a filling member facing the closure end face having a leakage portion;
Pressing the filling member from the outside of the end face plate with a pressing member;
Repair method for closures with Before the step of placing the filling member, the pressure member is attached to face the end face plate,
In the step of disposing the filling member, the filling member is filled into a space formed between the end face plate and the pressure member.
The closure repair method according to claim 15. The filling member is made of a material that is clay-like at the time of filling and hardens into a rubber-like shape after filling.
The closure repair method according to claim 15. Before the pressurizing step, a fixing member is fixed to at least one of the cable, the sleeve, and the end plate, and the pressing member is movably supported by the fixing member,
In the pressurizing step, the filling member is pressurized by moving the pressing member in the extending direction of the cable.
The closure repair method according to claim 17.

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