KR200401387Y1 - An Apparatus for Repairing the Pipe of Uniform Pressure - Contact Type - Google Patents

Abstract

Provides equal pressure tight conduit repair.

The present invention is a device that is inserted into the conduit to cure the reinforcing material in contact with the inner surface of the conduit to repair the defective portion of the conduit, the first chamber disposed in the center of the inner space of the body and the first and the left and right ends thereof are arranged An expansion member for dividing into two chambers to contact the outer surface of the reinforcing material wound on the body to the inner surface of the conduit during volume expansion; A connecting shaft having a predetermined length arranged between the left and right pairs of brackets for sealing and fixing the left and right ends of the expansion member, respectively; And a first air supply line for supplying compressed air into the first chamber and a second air supply line for supplying compressed air into the second chamber to supply compressed air to the expansion member. It includes.

According to the present invention, the contact pressure between the inner surface of the conduit and the outer surface of the reinforcing member is uniformly formed in the longitudinal direction so that the adhesive strength between the conduit and the reinforcing member can be uniformly obtained in the longitudinal direction, thereby extending the service life while preventing premature dropping of the reinforcing member. To prevent repair.

Description

An Apparatus for Repairing the Pipe of Uniform Pressure-Contact Type}

The present invention relates to a device for repairing a conduit, and more particularly, in a state in which the contact pressure between the outer surface of the reinforcement introduced into the pipe and the inner surface of the conduit is generally uniform in the longitudinal direction in order to repair cracks and defects in the damaged conduit. It relates to a pressure equalizing conduit repair device that is improved to harden the reinforcement to form a uniform adhesive strength of the reinforcement as a whole, to prevent poor adhesion, and to extend the service life.

In general, conduits buried underground, such as sewage pipes, sewer pipes, storm pipes, and box pipes, are cracked, broken, or separated from the connection between conduits due to aging of the pipe itself, subsidence of the ground, or fluctuations in earth pressure from the ground. Defects will occur. Therefore, the wastewater inside the conduit is discharged to the outside through such a defective portion to contaminate the water quality and the soil.

Accordingly, a method for repairing a faulty conduit is to dig into the ground from the upper ground of the fault spot to the point where the conduit is buried, to expose the conduit to the outside, and to repair the faulty conduit or to a new conduit. Replacement excavation conduit repair work was performed.

However, such excavation conduit repair work is not only difficult to excavate the ground itself, but also difficult to pinpoint the excavation point, and if the ground is paved with asphalt or concrete, it is removed and excavated again. It requires a lot of manpower and equipment for work, such as the hassle of packing work, and requires a relatively large area and a long time for excavation work, which is a great obstacle for traffic of general pedestrians or vehicles. There were problems such as giving.

In order to remedy these shortcomings, a non-excavation repair method is known that can easily repair damaged or defective parts of the conduit buried in the ground without digging the ground, and such non-excavation method can be moved within the conduit. After the device is inserted into the conduit through a manhole, etc., the device is moved to a broken or defective defect and remote control is used to repair the defective point. Various devices have been developed according to the state of.

Among the non-excavation methods, it is known that the ASS (Air Shooting System) method, which is performed by using a cylindrical repair device that the expansion member made of special rubber constituting the body portion, the reinforcement on the outer surface of the expansion member After moving to the repair point in the wound state, by injecting air into the expansion member to expand the expansion member, the reinforcement located on the outer surface is in close contact with the conduit, and the reinforcement is hardened to fully adhere to the conduit over time. It is to repair the defective part. Then, when the hardening of the reinforcing material is completed, the air in the expansion member is taken out to collect the discharge device is discharged again to the outside to be inserted into the conduit.

Such an ASS method is, for example, when a crack portion of about 10 cm radius occurs inside the conduit, so that the entire inner surface of the conduit around the defect is covered with a reinforcing material without the need to precisely set the repair target part. It does not require expensive equipment or complicated operation for precise control, so it is economical and flexible, and the expansion member is composed of special rubber that expands flexibly. There is an advantage in that it is possible to repair a wide variety of damages and defective parts such as pipe misalignment.

However, as shown in FIG. 1, a reinforcing material wound around the expansion member by inserting a conventional device 1 having an expansion member 20 between a pair of left and right brackets 20 into a conduit P, which is a repair object, is provided. When repairing the damaged conduit (P) by using, the expansion member 10 is expanded in volume by the injection of compressed air to expand the outer diameter of the expansion member made of a special rubber material on the left and right outer diameter in the center of the expansion structure Since it is larger than the outer diameter at both ends and protrudes in the radial direction, the contact pressure at the contact surface between the reinforcement 101 and the conduit P during the volume expansion of the expansion member 10 is determined by the reinforcement 101. The left and right ends of the reinforcement 101 and the inner surface of the conduit P may not be in contact with each other.

In this state, the reinforcing material 101 which is in close contact with the inner surface of the conduit P passes through the natural hardening for a predetermined time or by providing a heat source of the reinforcing material 101 to artificially thermally harden the inner surface of the conduit P. Even when the adhesive is attached, the adhesive strength in the left and right end regions is relatively lower than the adhesive strength in the longitudinal center region of the reinforcing material due to the difference in the adhesion pressure.

Accordingly, the dropping of the reinforcement after the conduit repair work is first generated in the left and right end areas where the adhesive strength is relatively low or a gap may occur, thereby accelerating the dropping of the reinforcement due to fluid flow, and lowers the service life of the reinforcement. There was a problem letting.

In addition, as shown in FIG. 1, when the area of the defective portion is large, instead of the reinforcement 101 having a short formation length l, the reinforcement 101 having a relatively long formation length L is bonded to the conduit and repaired. When hardening is performed in a state in which adhesion between the left and right ends of the reinforcement 101 and the inner surface of the conduit P is not properly performed, the adhesive strength between them is formed below a preset value, resulting in poor repair. .

In addition, the defect that the adhesive strength at the left and right ends of the stiffener is lowered and the gap is generated increases as the inner diameter of the conduit is larger, and in particular, a repair defect in a large conduit of 600 to 1200 mm or more is smaller than 600 mm There was a problem that it is difficult to perform the job of repairing large diameter conduits higher than the defective rate in conduits.

Therefore, the present invention has been proposed to solve the conventional problems as described above, the purpose of which is to lengthen the contact pressure between the inner surface of the conduit and the outer surface of the reinforcement so as to obtain a uniform strength in the longitudinal direction between the conduit and the reinforcement To uniformly formed in the direction to prevent the premature dropping of the reinforcement while extending the service life, to provide a pressure equally close conduit repair device that can prevent repair failure.

As a technical configuration for achieving the above object, the present invention,

An apparatus for repairing defects in a conduit by curing a reinforcement inserted into a conduit and contacting an inner surface of the conduit,

An expansion member for dividing an inner space of the body into a first chamber disposed at a center and a second chamber disposed at both left and right ends thereof to contact the inner surface of the reinforcing member wound on the body with the inner surface of the conduit during volume expansion;

A connecting shaft having a predetermined length arranged between the left and right pairs of brackets for sealing and fixing the left and right ends of the expansion member, respectively; And

An air supply unit having a first air supply line for supplying compressed air into the first chamber and a second air supply line for supplying compressed air into the second chamber to supply compressed air to the expansion member; Provides a pressure-tight contact type conduit repair device comprising a.

The first chamber is separated from the second chamber by first and second vertical bulkheads extending from an inner surface of the expansion member and integrally connected to an outer surface of the connecting shaft, and the second chamber is connected to at least one. Equal pressure tight conduit repair device characterized in that the communication with each other via a line.

Preferably, the left and right pair of the second chamber is provided to have the same volume in a symmetrical structure around the first chamber.

Preferably, the connecting shaft is formed of a hollow cylindrical pipe member whose one end is in communication with the first air outlet opening provided in the fixing cap of the one side bracket, and at least one nozzle hole is penetrated through the outer surface corresponding to the first chamber. do.

Preferably, the outer ring of the connecting shaft corresponding to the first and second vertical partitions for dividing the first chamber and the second chamber has an inner circumferential surface of a central hole formed therethrough in the center of the vertical partition and is bonded and bonded. Bonding jaw is provided.

Preferably, the air pressure of the second chamber is maintained relatively larger than the air pressure of the first chamber so that the contact pressure in the left and right end regions of the reinforcing member is formed larger than in the central region.

Hereinafter, the present invention will be described in more detail.

Figure 2 is an overall external view showing a pressure equally close type conduit repair apparatus according to the present invention, Figure 3 is an exploded perspective view showing a pressure equally close type conduit repair apparatus according to the present invention.

The device 100 of the present invention is to contact the reinforcing material to the defects in the case of breakage of conduits such as sewage pipes, rain pipes and sewage pipes, and joint defects between adjacent conduits, and to harden them quickly or thermally harden them as a heat source so that the inner surface of the conduit By firmly adhering the reinforcement to the to be able to easily repair the defect, it is configured to include an expansion member 110, bracket 120, connecting shaft 130 and the air supply unit 140.

That is, the expansion member 110 is a rubber of a special material so as to increase the volume by flexible expansion in the radial direction by the compressed air injected into the body in the outer surface of the body reinforcement 101 is wound in the initial state of shrinkage It is a hollow cylindrical elastic body made of a raw material.

The expansion member 110 is provided with a plurality of chambers (111, 112a, 112b) to be configured by dividing the internal space filled with compressed air into a plurality of spaces, which is the A pair of first chambers 111 disposed at the center and corresponding to the central region of the reinforcing member 101 and disposed at both left and right ends of the first chamber 111 to correspond to the left and right ends of the reinforcing member 101 respectively; It consists of the second chamber (112a) (112b).

The first chamber 111 extends from the inner surface of the expansion member 110 and is formed by the first and second vertical bulkheads 115a and 115b integrally connected to the outer surface of the connecting shaft 130. The second chambers 112a and 112b are separated from each other, and the second chambers 112a and 112b communicate with each other through at least one connection line 113.

Accordingly, the left and right pairs of the second chambers 112a and 112b are compressed air introduced into the second chamber 112a on one side through the connection line 113 to the other second chamber 112b on the other side. Can be supplied, and they can maintain the same air pressure with each other.

At this time, the left and right pair of the second chamber (112a, 112b) is preferably provided to have the same volume in a left-right symmetrical structure around the first chamber (111).

In addition, the reinforcing member 101 is in close contact with the inner surface of the conduit (P) by the volume expansion of the expansion member 110, and then hardened or thermally cured by sealing the holes, cracks generated in the conduit, or the connection between the conduits It acts as a repair material to eliminate discontinuities in the pipeline where misalignment or short circuit occurs.

The reinforcing material 101 is usually manufactured by impregnating a resin having a property of curing on a fiber cloth such as a non-woven fabric, such as a non-woven fabric or a certain time is satisfied, preferably a thermosetting resin such as an unsaturated ester resin and glass fiber What is manufactured by impregnating and laminating a nonwoven fabric is mainly used.

In addition, the bracket 120 is a sealing member provided in a pair of left and right to completely seal the left and right ends of the expansion member 110 consisting of the first and second chambers 111, 112a, 112b. One of the left and right pairs of brackets 120 is forcibly injected with compressed air at a pressure higher than atmospheric pressure into the first chamber 111 and the second chamber (112a) (112b) of the expansion member (110) First and second air outlets 129a and 129b are respectively provided to discharge the compressed air to the outside after the maintenance work.

The bracket 120 has a structure that seals the left and right ends of the expansion member 110 in the same way. When only the configuration of one side is described, the guide roller contacts the inner surface of the bracket 120 when inserted into the conduit P. It is provided with a plurality of 125, the fixing cap 121 having the first and second air outlets (129a, 129b), and the fixing ring is inserted into the stepped portion (122a) where the end of the expansion member 110 is located A second holder 123 having a first holder 122 assembled to an inner surface of the fixing cap 121 and an end of the connecting shaft 130, and assembled to an inner surface of the first holder 122. It is configured to include a holder 124.

Here, the first and second holders 122 and 124 are positioned on the same horizontal axis as the first and second air outlets 129a and 129b so as to form an outlet passage of compressed air. Through-holes are respectively formed through the holes.

 Accordingly, the expansion ring 110 is formed by inserting the fixing ring 123 into the step 122a in a state where one end of the expansion member 110 is positioned on the step 122a of the first holder 122. One end of the second chamber (112a) (112b) of the left and right ends are fixed between the fixing ring (123) and the step (122a) by primary fixing the first holder 122, the inside of the fixing cap 121 When assembled by fastening with a plurality of fastening members 122b on the surface, one end of the expansion member 110 is seized between the fixing cap 121 and the first holder 122 is firmly fixed, the expansion member 110 The other end of) is also sealed while being bitten and fixed between the fixing gap and the first holder of the other bracket on the opposite side.

In addition, the connecting shaft 130 is coupled to the female screw portion of the second holder 124 by fastening the male screw portion formed at the end of the connecting shaft 130 before assembling the expansion member 110 to the bracket 120. The second holder 124 coupled to the connecting shaft 130 is assembled to the inner surface of the first holder 122 by a plurality of fastening members 124a.

The guide roller 125 is assembled to enable idle rotation at each end of the plurality of roller supports 125a provided on the outer surface of the first holder 122 so as to smoothly move in and out of the conduit P. It is desirable to be.

In addition, the connecting shaft 130 is a shaft member of a predetermined length is located in the inner space of the expansion member 110 is connected to the left and right ends of the left and right pair of brackets 120, respectively.

One end of the connecting shaft 130 communicates with the first air outlet 129a provided at the fixing cap 121 of the one side bracket 120, and at least on an outer surface corresponding to the first chamber 111. One nozzle hole 124 is composed of a hollow hollow cylindrical pipe member.

The vertical partition wall is formed on an outer surface of the connecting shaft 130 corresponding to the first and second vertical partition walls 115a and 115b that divide the first chamber 111 and the second chamber 112a and 112b. An inner circumferential surface of the central holes 116a and 116b formed through the center of the centers 115a and 115b is disposed to have annular bonding jaws 135a and 135b bonded and bonded to each other as a bonding agent.

The connecting shaft 130 is a nozzle only by the first chamber 111 of the expansion member 110 disposed between the second chamber (112a) (112b) when the compressed air is injected through the first air inlet (129a) By supplying compressed air through the ball 124, it expands in the radial direction and at the same time maintains a constant distance between the left and right pair of brackets 120 so that the expansion member 110 is not expanded in the longitudinal direction reinforcement ( The contact between the outer surface of 101 and the inner surface of the conduit P is made smoother.

On the other hand, the air supply unit 140 is a first air supply line 141 for supplying compressed air into the first chamber 111 of the expansion member 110 to expand it, and the second chamber (112a) (112b) It is configured to have a second air supply line 142 for supplying the compressed air into the expansion.

The first air supply line 141 is connected to a first air inlet 129a communicating with one end of the hollow-cylindrical connecting shaft so as to deliver compressed air into the first chamber 111, and the second air supply line 142 is connected to the second air outlet 129b so as to communicate with one of the second chambers communicating with each other via the connection line 113.

In addition, the first and second air supply lines 141 and 142 are provided in a valve member (not shown) and the first and second chambers 111, 112a and 112b so as to control a supply flow of compressed air. It is preferable to provide a pressure gauge (not shown), respectively, so as to check the air pressure by the injected compressed air.

The repairing of the defective part inside the conduit using the apparatus of the present invention having the above-described configuration is performed after cleaning the repaired part by cleaning the inside of the conduit to be repaired.

After securing a working space around the manhole into which the conduit repair apparatus 100 of the present invention is inserted, the high-pressure water is removed to remove the foreign matter accumulated in the conduit P to be repaired or the foreign matter attached to the inner wall of the pipe. A header (not shown) to be injected is introduced into the conduit to perform a pipe cleaning operation.

Subsequently, before starting the conduit repair work, a small CCTV camera is inserted into the conduit to check the internal condition of the conduit, and the internal condition of the conduit including the point to be repaired is checked by an external monitor.

Then, the impregnated with a thermosetting resin, such as glass fiber and laminated to manufacture the reinforcement 101 in the secured working space, and the expanded reinforcement member 110 constituting the conduit repair device 100 of the present invention manufactured the reinforcement (101) It is attached to the outer surface of the), in this case, the expansion member 110 maintains the initial state in which the volume is contracted.

Subsequently, as shown in FIG. 4 (a), the reinforcement 101 is inserted into the conduit P by inserting the device 100 wound around the expansion member 110 into the conduit P and checking the reinforcement 101 with a camera. Place it in the part to be repaired.

In such a state, when the compressed air pressurized to a pressure higher than atmospheric pressure is supplied through the first air outlet 129a provided in the one side bracket 120, the first air outlet 129a communicates with the first air outlet 129a. Compressed air forcedly injected into the hollow shaft cylindrical connecting shaft 130 is supplied through the nozzle hole 134 provided at a position corresponding to the first chamber 111 of the expansion member 110 and the first chamber 111. ) Expands the outer diameter of the first chamber 111 by freely expanding only in the radial direction with air pressure.

When the outer diameter of the first chamber 111 constituting the volume-expanded expansion member 110 becomes larger than the inner diameter size of the conduit P, as shown in FIG. The outer surface is in contact with the inner surface of the conduit (P) and at the same time gradually pressurized closely, when the close contact between the reinforcing material 101 and the conduit (P) is more than a predetermined pressure is connected to the first air outlet (129a) The supply of compressed air through the first air supply line 141 is stopped.

In addition, the pair of left and right pairs of second chambers 112a and 112b disposed on the left and right sides of the first chamber 111 may have an outer diameter expanded by compressed air forcedly injected through the second air supply line 142. The reinforcing material 101 wound on its outer surface is pressed against the inner surface of the conduit P, and the close contact between the reinforcing material 101 and the conduit P is maintained during the maintenance work.

In this case, the contact pressure in the close contact portion where the contact between the outer surface of the reinforcing member 110 and the inner surface of the conduit P is made is the outer of the first and second chambers 111, 112a and 112b which have been expanded. Since the contact between the surface and the inner surface of the conduit is uniform and uniform without the occurrence of a gap in the longitudinal direction, the left and right ends of the reinforcement 101 after adhesion by natural curing or heat curing are dropped from the inner surface of the conduit. This can be prevented.

In addition, the air pressure due to the compressed air filled in the second chambers 112a and 112b corresponding to the left and right end regions of the reinforcement 101 is applied to the first chamber 111 corresponding to the central region of the reinforcement 101. When it is maintained relatively larger than the air pressure by the compressed air to be filled, the contact pressure in the left and right end regions of the reinforcement 101 is formed larger than in the central region, so that the reinforcement after the natural or thermal curing of the reinforcement 101 Adhesion strength between the 101 and the conduit can be made larger in the left and right end areas, thereby preventing the left and right ends of the reinforcement from falling off the conduit after construction.

On the other hand, in order to shorten the hardening time of the reinforcing member 101 is pressed evenly in the longitudinal direction to the inner surface of the conduit (P), the first and second chambers 111, 112a constituting the expansion member (110) When the compressed air having a high temperature higher than the atmospheric temperature is supplied into the 112b, the heat source is transferred to the reinforcing material through the expansion member that is heated to shorten the curing time of the reinforcing material than during natural curing.

At this time, by providing a temperature sensor in the internal space of the expansion member 110 to measure the internal temperature through it to be confirmed by the external control panel, it is possible to perform the curing of the reinforcement more smoothly.

In addition, even when the inner diameter of the conduit P is a small conduit of 600 mm or less or a large conduit of 600 to 1200 mm or more, the reinforcement 101 is evenly adhered to the inner surface of the conduit evenly in the longitudinal direction without a gap to harden the reinforcement. It can be carried out constant in the longitudinal direction.

When the hardening of the reinforcing member 101 is completed, the first and second chambers 111 of the expansion member 110 are provided through the first and second air outlets 129a and 129b provided in the bracket 120. Compressed air injected into 112a and 112b is discharged to the outside.

In this case, since the expansion member 110 is contracted to an initial state and the outer diameter is reduced, the device including the expansion member 110 having the reduced outer diameter can be easily withdrawn from the conduit P, and hardening is performed. The completed reinforcement 101 is to be able to complete all the maintenance work by maintaining a firmly attached state to the inner surface of the conduit as shown in Figure 4 (c).

While the subject innovation has been shown and described with respect to specific embodiments, it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit or scope of the subject innovation as provided by the following claims. I would like to clarify that knowledge is easy to know.

According to the present invention as described above, the conduit is divided into a first chamber corresponding to the center region of the reinforcement and a pair of left and right pairs of second chambers corresponding to the left and right ends of the reinforcement. Since the reinforcement attached to the inner surface can be hardened and adhered in a state of being uniformly adhered to the entire length direction, the service life is extended while maintaining the adhesion strength with the conduit evenly in the longitudinal direction, preventing premature removal of the repaired reinforcement. To prevent repair.

In addition, by forming the air pressure in the second chamber relatively higher than the air pressure in the second chamber to artificially increase the adhesion pressure, it is possible to strengthen the adhesive strength in the left and right end regions of the stiffener relatively than the adhesive strength in the central region. Therefore, the effect that can prevent the repair failure that the left and right ends of the reinforcing material is dropped after the repair is achieved.

1 is a schematic diagram showing a repair operation using a conventional conduit repair device.

Figure 2 is an overall external view showing a pressure equally close type conduit repair device according to the present invention.

Figure 3 is an exploded perspective view showing a pressure equally close conduit repair device according to the present invention.

Figure 4 (a) (b) (c) is a work flow chart showing the maintenance work using the pressure equally close conduit repair device according to the present invention.

Explanation of symbols on main parts of drawing

101: reinforcing material 110: expansion member

111: first chamber 112a, 112b: second chamber

115a, 115b: First and second vertical bulkheads 116a, 116b: Center hole

120: bracket 121 fixed gap

122: first holder 124: second holder

125: guide rollers 129a, 129b: 1, 2 air outlet

130: connecting shaft 134: nozzle hole

135a, 135b: bonding jaw 140: air supply

141: first air supply line 142: second air supply line

Claims (6)

An apparatus for repairing defects in a conduit by curing a reinforcement inserted into a conduit and contacting an inner surface of the conduit, An expansion member for dividing an inner space of the body into a first chamber disposed at a center and a second chamber disposed at both left and right ends thereof to contact the inner surface of the reinforcing member wound on the body with the inner surface of the conduit during volume expansion; A connecting shaft having a predetermined length arranged between the left and right pairs of brackets for sealing and fixing the left and right ends of the expansion member, respectively; And An air supply unit having a first air supply line for supplying compressed air into the first chamber and a second air supply line for supplying compressed air into the second chamber to supply compressed air to the expansion member; Pressure-sensitive adhesive conduit repair device, characterized in that it comprises a. The method of claim 1, The first chamber is separated from the second chamber by first and second vertical bulkheads extending from an inner surface of the expansion member and integrally connected to an outer surface of the connecting shaft, and the second chamber is connected to at least one. A pressure equalizing conduit repair device characterized in that it communicates with each other via a line. The method of claim 1, The pair of right and left second chamber is a pressure equally close conduit repair device, characterized in that provided with the same volume in a symmetrical structure around the first chamber. The method of claim 1, The connecting shaft has one end portion communicating with a first air outlet opening provided in the fixing cap of the one side bracket, and characterized in that it consists of a hollow cylindrical pipe member through which at least one nozzle hole is penetrated to the outer surface corresponding to the first chamber. Equivalent pressure-contact type conduit repair device. The method of claim 1, The outer ring of the connecting shaft corresponding to the first and second vertical bulkheads that divide the first chamber and the second chamber has an inner circumferential surface of a central hole formed through the center of the vertical bulkhead and is annularly bonded to the annular bonding jaw. Equivalent pressure-contact type conduit repair device characterized in that provided. The method of claim 1, And the air pressure of the second chamber is maintained relatively larger than the air pressure of the first chamber so that the contact pressure in the left and right end regions of the reinforcement is larger than in the central region.