CN117685445A - Lining repair joint connection of thermal pipeline and pipeline mechanical fixing device and method - Google Patents
Lining repair joint connection of thermal pipeline and pipeline mechanical fixing device and method Download PDFInfo
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- CN117685445A CN117685445A CN202311699129.1A CN202311699129A CN117685445A CN 117685445 A CN117685445 A CN 117685445A CN 202311699129 A CN202311699129 A CN 202311699129A CN 117685445 A CN117685445 A CN 117685445A
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- 230000008439 repair process Effects 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 25
- 239000010959 steel Substances 0.000 claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 230000006835 compression Effects 0.000 claims abstract description 9
- 238000007906 compression Methods 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 34
- 238000005452 bending Methods 0.000 claims description 11
- 238000001125 extrusion Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
- F16L55/163—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a ring, a band or a sleeve being pressed against the inner surface of the pipe
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The utility model discloses a lining repair joint connection of a heating pipeline and a pipeline mechanical fixing device and method, and relates to the technical field of fixed connection of lining repair joints. The device comprises a lining pipe joint, a lining repairing hose, an outer sleeve joint and a fastening steel sleeve which are coaxially and fixedly sleeved in sequence from inside to outside. According to the utility model, through designing the inner and outer joint mechanical structure suitable for the thermal pipeline lining repair technology, the detachable semicircular fastening hoop is matched, and the flexible application of the fastening bolt and the fine adjustment compression bolt is matched, so that the installation and fixation of the lining repair pipeline at the joint under different working requirements can be satisfied, and the reliability of joint connection and the working stability of the lining repair pipeline in thermal pipeline lining repair engineering are improved.
Description
Technical Field
The utility model relates to the technical field of fixed connection of lining repair joints, in particular to lining repair joint connection of a thermal pipeline and a pipeline mechanical fixing device and method.
Background
Considering that the heating pipeline is generally buried under the ground, the whole pipe repair is difficult to realize by excavating the ground. At present, a non-excavation repair technology is mostly adopted, and repair is carried out on specific parts with problems of a heating pipeline instead of replacing pipelines with the whole length, so that the problem of connection between new pipelines and old pipelines needs to be solved.
Chinese patent No. CN113915447a proposes a connecting tube assembly and a delivery tube assembly, which are connected by adding a locking element. However, the patent only considers how to connect two single-layer pipelines, and in the thermal pipeline lining repair technology, besides the connection of new and old pipelines, the patent also needs to consider how to reasonably and reliably fix the lining repair pipelines added during pipeline repair with the new and old pipelines in pairs. Chinese patent No. CN209977560U proposes a taper joint for lining pipe for repairing non-excavated pipeline, in which an outer taper sleeve of joint is installed outside the pipeline to be repaired, an inner taper sleeve of joint is inserted into the lining pipe, and the structural taper of the taper sleeve is utilized to form a connecting structure of compressed lining pipe. The utility model discloses a lining pipe is in the joint slip in the work pressurization in-process can effectively be avoided to this patent, but when the lining pipe receives the temperature to influence and produces the heat altered shape, joint inner taper sleeve and lining pipe's junction probably can take place bending deformation. Therefore, it is necessary to design a new pipeline connection mode to solve the technical problem of pipeline repair.
Disclosure of Invention
The present utility model is directed to overcoming the above problems and providing a liner repair joint connection for a thermal pipeline and a mechanical fixing device and method for the pipeline.
The specific technical scheme adopted by the utility model is as follows:
the utility model provides a lining repair joint connection and pipeline mechanical fixing device of a heating pipeline, which comprises a lining pipe joint, a lining repair hose, an outer sleeve joint and a fastening steel sleeve which are coaxially jointed and sleeved in sequence from inside to outside;
the lining pipe joint comprises a lining support fixing pipe, a flange connecting pipe, a joint connecting flange and a working pipe connecting flange; the lining support fixing pipe and the flange connecting pipe are coaxially connected into a whole along the axial direction, the inner wall of the pipe body formed by the lining support fixing pipe and the flange connecting pipe is of a cylindrical structure, and a joint connecting flange is externally connected at the joint of the lining support fixing pipe and the flange connecting pipe along the circumferential direction; the middle section of the outer wall of the inner lining support fixing pipe is provided with an annular sealing fixing groove along the circumferential direction, and the outer end of the flange connecting pipe is externally connected with a working pipe connecting flange; the working pipe connecting flange is used for being connected with a flange of a normal thermal working pipe through a connecting bolt;
the lining repairing hose is of a circular tube structure and is sleeved on the outer wall of the lining supporting and fixing tube; one end of the lining repair hose is used for extending into the thermal working pipe to be repaired and being attached to the inner wall of the thermal working pipe to be repaired, and the other end of the lining repair hose is attached and pressed to one side of the joint connecting flange;
the outer sleeve joint comprises an outer joint flange and an outer sleeve working pipe; the outer sleeve working tube is of a circular tube structure, and two ends of the outer sleeve working tube are respectively externally connected with an outer joint flange; the outer joint flange at one end is connected with the flange of the thermal working pipe to be repaired through a connecting bolt, and the outer joint flange at the other end is connected with the joint connecting flange through a connecting bolt;
the fastening steel sleeve is sleeved on the outer wall of the outer sleeve working tube positioned outside the sealing and fixing groove and is used for embedding the lining repairing hose positioned outside the sealing and fixing groove and the outer sleeve joint into the sealing and fixing groove.
Preferably, the fastening steel sleeve comprises a fastening hoop and mounting lugs, and the two ends of the two semicircular fastening hoops are respectively provided with the mounting lugs; the mounting lugs are provided with fastening connecting holes for inserting fastening bolts to realize mounting and fixing, and the two sides of the fastening anchor ear are provided with a plurality of fine adjustment fastening threaded through holes for inserting fine adjustment compression bolts along the circumferential direction; the fastening hoop is arranged on the outer side of the sealing fixing groove, and the radian of the bottom of the fastening hoop is the same as that of the sealing fixing groove.
Further, the contact side of the fastening hoop and the outer sleeve working tube is of an arc-shaped structure, and the diameter of the center of the arc-shaped structure is d 4 ＝d 303 +δ 1 +δ 202 The method comprises the steps of carrying out a first treatment on the surface of the Wherein d 303 For sealing the outside diameter, delta, of the pipe holding the groove 1 Repairing the wall thickness, delta, of the hose for lining 202 Is the wall thickness of the outer sleeve working tube.
Further, fine adjustment fastening thread through holes formed in two sides of the fastening hoop are symmetrically distributed.
Preferably, a plurality of first bolt connection holes are formed in the outer joint flange along the circumferential direction, and a plurality of second bolt connection holes are formed in the joint connection flange and the working pipe connection flange along the circumferential direction.
Preferably, the inner lining support fixing pipe, the flange connecting pipe, the joint connecting flange and the working pipe connecting flange are welded, and the outer joint flange and the outer sleeve working pipe are welded.
In a second aspect, the present utility model provides a connection and fixing method for a lining repair joint connection and a mechanical fixing device of a pipeline by using any one of the heating power pipelines in the first aspect, which specifically comprises the following steps:
the lining repairing hose is nested on the outer wall of the lining pipe joint, the inner wall of the pipeline of the lining repairing hose is tightly attached to the outer wall of the lining supporting and fixing pipe, and an annular cavity is formed between the inner wall of the pipeline of the lining repairing hose and the sealing and fixing groove; one end of the lining repair hose extends into the thermal working pipe to be repaired and is attached to the inner wall of the thermal working pipe to be repaired, and the other end of the lining repair hose is attached and pressed on one side of the joint connecting flange; nesting the outer sleeve working tube on the outer wall of the inner lining repairing hose, and tightly attaching the outer wall of the inner lining repairing hose to the inner wall of the outer sleeve working tube; the outer joint flange at one end of the outer sleeve working pipe is connected with the flange of the thermal working pipe to be repaired through a connecting bolt, and the outer joint flange at the other end of the outer sleeve working pipe is connected with the joint connecting flange through a connecting bolt; the working pipe connecting flange is connected with the flange of the normal thermal working pipe through a connecting bolt, so that the primary connection of the lining repair joint and the primary fixation of the lining repair hose are completed;
two fastening hoops of the fastening steel sleeve are assembled outside the outer sleeve joint, and the installation positions of the two fastening hoops correspond to the sealing and fixing grooves; the fastening bolts are respectively connected with the mounting lugs of the two fastening hoops at the same end, so that the preliminary fixing of the fastening steel sleeve is completed; the two ends of the fastening steel sleeve are respectively and symmetrically screwed with the fastening bolts inwards until no space exists at the joint of the two fastening hoops; in the process, the two semicircular annular fastening hoops are gradually closed, and the outer sleeve working tube is subjected to annular extrusion force and is inwards bent and deformed along the contact surface of the outer sleeve working tube and the fastening hoops; meanwhile, similar inward bending deformation is generated after the lining repair hose in the same position is subjected to circumferential extrusion force; after the two fastening hoops are completely assembled and fixed, the bending radians of the outer sleeve working tube and the inner lining repairing hose at the deformation position are matched with the bottom radians of the fastening hoops; at the moment, the inner wall of the lining repair hose is tightly attached to the sealing fixing groove, so that further fixing of the lining repair hose is completed;
through the fine tuning fastening screw thread through-hole that the fastening staple bolt left and right sides circumference was offered, the circumferential symmetry screw in fine tuning hold-down bolt to the crooked radian of adjustment overcoat work pipe and fastening staple bolt bottom contact surface further compresses tightly overcoat work pipe and inside lining restoration hose, makes inside lining restoration hose inner wall and sealed fixed groove further laminate, accomplishes the mechanical fixation of inside lining restoration hose, finally realizes the fixed connection of inside lining restoration joint.
Compared with the prior art, the utility model has the following beneficial effects:
(1) The utility model designs a mechanical structure for mutually nesting connection of an outer sleeve joint, a lining pipe joint and a lining repair hose aiming at the lining repair technology of a thermal pipeline, and improves the reliability of joint connection in the lining repair engineering of the thermal pipeline.
(2) According to the utility model, the detachable two semicircular fastening hoops are adopted, the annular tightening extrusion characteristics in the complete assembly process are combined with the structural characteristics of the annular cavity formed in the nesting process, and the consistency of the shape of the sealing fixing groove and the bottom of the hoop can be effectively realized, so that the mechanical fixing of the lining repair hose can be effectively realized. Meanwhile, the installation and fixation requirements of the lining repair pipeline at the joint under different use conditions can be met through the matched use of the fastening bolts on the fastening steel sleeve and the fine adjustment compression bolts.
(3) The utility model has simple installation, convenient operation and lower production cost, and can effectively ensure the connection reliability of the joint and the working stability of the lining repair pipeline.
Drawings
FIG. 1 is a schematic illustration of a liner repair joint connection structure for a thermal conduit;
FIG. 2 is an overall schematic of the connection of a thermal conduit to be repaired with a normally operating thermal conduit joint;
fig. 3 is a schematic structural view of a mechanical fixing of a lining repair pipe at a joint, wherein (a) is a schematic structural view when preliminary connection fixing is completed, and (b) is a schematic structural view after final fixing connection of the lining repair joint is completed.
In the figure: the pipe joint comprises a lining repairing hose 1, an outer pipe joint 2, a lining pipe joint 3, a fastening steel sleeve 4, a thermal working pipe 5 to be repaired and a normal thermal working pipe 6. The outer joint flange 201, the outer sleeve working pipe 202, the first bolt connection hole 203, the joint connection flange 301, the inner lining support fixing pipe 302, the sealing fixing groove 303, the second bolt connection hole 304, the flange connection pipe 305, the working pipe connection flange 306, the connection bolt 307, the fastening hoop 401, the mounting lug 402, the fine adjustment fastening screw thread through hole 403, the fastening connection hole 404, the fastening bolt 405 and the fine adjustment compression bolt 406.
Detailed Description
The utility model is further illustrated and described below with reference to the drawings and detailed description. The technical features of the embodiments of the utility model can be combined correspondingly on the premise of no mutual conflict.
As shown in fig. 1 and 2, the lining repairing joint connection and the mechanical fixing device for the pipeline provided by the utility model mainly comprises a lining pipe joint 3, a lining repairing hose 1, an outer sleeve joint 2 and a fastening steel sleeve 4, wherein the lining pipe joint 3, the lining repairing hose 1, the outer sleeve joint 2 and the fastening steel sleeve 4 are coaxially jointed and sleeved in sequence from inside to outside.
The structure and connection of the components will be described in detail.
In the present utility model, the liner joint 3 includes a liner support fixing pipe 302, a flange connection pipe 305, a joint connection flange 301, and a working pipe connection flange 306. The lining support fixing pipe 302 and the flange connecting pipe 305 are coaxially connected into a whole along the axial direction, namely, the lining support fixing pipe 302 and the flange connecting pipe 305 are sequentially connected into an integral straight pipe end to end, and the inner wall of the straight pipe body formed by the lining support fixing pipe 302 and the flange connecting pipe 305 is of a cylindrical structure. The joint of the lining support fixing tube 302 and the flange connecting tube 305 is provided with a joint connecting flange 301 extending outwards along the circumferential direction. An annular sealing and fixing groove 303 is formed in the middle section of the outer wall of the lining support fixing pipe 302 along the circumferential direction, and the groove depths of the sealing and fixing groove 303 formed along the circumferential direction are the same. One end of the flange connection pipe 305 is connected with the inner lining support fixing pipe 302, and the other end (i.e. the outer end) is externally connected (i.e. extends outwards) with a working pipe connection flange 306. The working pipe connection flange 306 is used for flange connection with one end of the normal thermal working pipe 6 by connection bolts 307.
As a preferred embodiment of the present utility model, the connection between the liner support fixing pipe 302 and the flange connection pipe 305 is welding, the connection between the joint connection flange 301 and the liner support fixing pipe 302 and the flange connection pipe 305 is welding, and the connection between the flange connection pipe 305 and the working pipe connection flange 306 is welding.
As a preferred embodiment of the present utility model, a plurality of second bolt coupling holes 304 are formed in the joint coupling flange 301 and the working pipe coupling flange 306 in the circumferential direction, and a detachable connection with the outside can be achieved by inserting bolts into the second bolt coupling holes 304.
In the present utility model, the liner repair hose 1 is a circular straight tube structure, which is sleeved on the outer wall of the liner support fixing tube 302. The lining repair hose 1 is connected with the lining support fixing tube 302 in a fitting manner. One end of the lining repair hose 1 extends into the thermal working pipe 5 to be repaired and is attached to the inner wall of the thermal working pipe, and the other end of the lining repair hose is attached to one side of the joint connection flange 301 in a pressing mode.
In the present utility model, the outer casing joint 2 comprises an outer joint flange 201 and an outer casing working pipe 202. The outer sleeve working tube 202 is of a round straight tube structure, and two ends of the outer sleeve working tube are respectively externally connected with outer joint flanges 201. The outer joint flange 201 at one end is connected with the flange of the thermal working pipe 5 to be repaired through the connecting bolts 307, and the outer joint flange 201 at the other end is connected with the joint connecting flange 301 through the connecting bolts 307.
As a preferred embodiment of the utility model, the connection between the outer joint flange 201 and the outer jacket working pipe 202 is by welding. Each of the outer joint flanges 201 is formed with a plurality of first bolting holes 203 in the circumferential direction, and detachable connection with the outside can be achieved by inserting bolts into the first bolting holes 203.
In the present utility model, the fastening steel sleeve 4 is sleeved on the outer wall of the outer sleeve working tube 202 positioned outside the sealing and fixing groove 303, and is used for embedding the lining repair hose 1 and the outer sleeve joint 2 positioned outside the sealing and fixing groove 303 into the sealing and fixing groove 303.
As a preferred embodiment of the present utility model, the fastening steel sleeve 4 mainly includes a fastening hoop 401 and a mounting ear 402. The fastening anchor ear 401 is semicircle annular, and two semicircle annular fastening anchor ears 401 both ends are equipped with the mounting ear 402 of outer protrusion respectively. The four mounting lugs 402 are provided with fastening connection holes 404, and two fastening connection holes 404 positioned at the same end are inserted into fastening bolts 405 to realize the mounting and fixing between the two fastening hoops 401. A plurality of fine adjustment fastening screw through holes 403 are formed in the circumferential direction on the left and right sides of the main body of the fastening hoop 401, and further fixation of the two fastening connection holes 404 can be achieved by inserting fine adjustment compression bolts 406 into the fine adjustment fastening screw through holes 403. The fastening anchor ear 401 is installed outside the sealing fixing groove 303, and the bottom radian of the fastening anchor ear 401 is the same as the radian of the sealing fixing groove 303. In order to achieve better fixed installation stress effect, fine adjustment fastening threaded through holes 403 formed in two sides of the fastening hoop 401 should be distributed.
That is, a plurality of fine adjustment fastening screw thread through holes 403 are symmetrically machined on the surface of the fastening steel sleeve 4, and symmetrical fine adjustment fastening screw thread through holes 403 are required to be machined on two sides of the mounting lugs 402 at two ends of the fastening hoop 401, so that the joint of the fastening steel sleeve 4 is ensured, and the bottom of the fastening hoop 401 can be tightly attached to the bending deformation of the outer sleeve working tube 202.
Specifically, the contact side of the fastening hoop 401 and the outer sleeve working tube 202 is an arc structure, and the diameter at the center of the arc structure is d 4 ＝d 303 +δ 1 +δ 202 . Wherein d 303 To seal the outside diameter delta of the pipe of the fixing groove 303 1 The wall thickness delta of the hose 1 is repaired for lining 202 Is the wall thickness of the outer working tube 202. That is to sayThat is, when the two semicircular fastening hoops 401 are completely assembled, the diameter of the steel sleeve at the bottom center is d 4 。
When in assembly, the nesting section of the lining pipe joint 3 and the lining repair hose 1 is an irregular cylinder, the middle part of the nesting section is provided with a diameter-reducing section to form a sealing fixing groove 303, and an annular cavity is formed after the nesting section and the lining repair hose 1 are nested; and the shape of the groove is perfectly matched with the bottom of the fastening hoop 401.
The utility model also provides a connecting and fixing method by using the lining repairing joint connection and the pipeline mechanical fixing device of the heating pipeline, which comprises the following steps:
the lining repair hose 1 is nested on the outer wall of the lining pipe joint 3, and the inner wall of the pipeline of the lining repair hose 1 is tightly attached to the outer wall of the lining support fixing pipe 302 to form an annular cavity with the sealing fixing groove 303. One end of the lining repair hose 1 extends into the thermal working pipe 5 to be repaired and is attached to the inner wall of the thermal working pipe, and the other end of the lining repair hose is attached to one side of the joint connection flange 301 in a pressing mode. The outer sleeve working tube 202 is nested on the outer wall of the lining restoration hose 1, and the outer wall of the lining restoration hose 1 is tightly attached to the inner wall of the outer sleeve working tube 202. The outer joint flange 201 at one end of the outer sleeve working pipe 202 is connected with the flange of the thermal working pipe 5 to be repaired through a connecting bolt 307, and the outer joint flange 201 at the other end is connected with the joint connecting flange 301 through the connecting bolt 307. The working pipe connecting flange 306 is connected with the flange of the normal thermal working pipe 6 through the connecting bolts 307, and the primary connection of the lining repair joint and the primary fixation of the lining repair hose 1 are completed.
Two fastening hoops 401 of the fastening steel sleeve 4 are assembled outside the outer sleeve joint 2, and the installation positions thereof correspond to the sealing and fixing grooves 303. The fastening bolts 405 are respectively connected with the mounting lugs 402 of the two fastening hoops 401 at the same end, so as to finish the primary fixation of the fastening steel sleeve 4. At this time, the structure of the mechanical fixing of the lining repair pipe at the joint after assembly is shown in fig. 3 (a).
The two ends of the fastening steel sleeve 4 are respectively and symmetrically screwed with the fastening bolts 405 inwards until no space exists at the joint of the two fastening hoops 401. In this process, the two semicircular fastening hoops 401 are gradually closed, and the outer sleeve working tube 202 is subjected to circumferential extrusion force, and is bent and deformed inward along the contact surface thereof with the fastening hoops 401. At the same time, the lining repair hose 1 at the same position is subjected to circumferential extrusion force to generate similar inward bending deformation. After the two fastening hoops 401 are completely assembled and fixed, the bending radians of the outer sleeve working tube 202 and the inner lining repair hose 1 at the deformation position are matched with the bottom radians of the fastening hoops 401. At this time, the inner wall of the lining repair hose 1 is tightly attached to the seal fixing groove 303, and further fixing of the lining repair hose 1 is completed.
Through the fine adjustment fastening screw thread through holes 403 circumferentially formed in the left side and the right side of the fastening hoop 401, fine adjustment compression bolts 406 are symmetrically screwed in the circumferential direction to adjust the bending radian of the contact surface between the outer sleeve working tube 202 and the bottom of the fastening hoop 401, the outer sleeve working tube 202 and the lining repair hose 1 are further compressed, the inner wall of the lining repair hose 1 is further attached to the sealing fixing groove 303, mechanical fixing of the lining repair hose 1 is completed, and finally fixed connection of a lining repair joint is realized. At this time, the structure of the mechanical fixing of the lining repair pipe at the joint after assembly is as shown in fig. 3 (b).
According to the utility model, through designing the inner and outer joint mechanical structure suitable for the thermal pipeline lining repair technology, the detachable semicircular fastening hoop is matched, and the flexible application of the fastening bolt and the fine adjustment compression bolt is matched, so that the installation and fixation of the lining repair pipeline at the joint under different working requirements can be satisfied, and the reliability of joint connection and the working stability of the lining repair pipeline in thermal pipeline lining repair engineering are improved.
The above embodiment is only a preferred embodiment of the present utility model, but it is not intended to limit the present utility model. Various changes and modifications may be made by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present utility model. Therefore, all the technical schemes obtained by adopting the equivalent substitution or equivalent transformation are within the protection scope of the utility model.
Claims (7)
1. The lining repair joint connection and pipeline mechanical fixing device of the heating pipeline is characterized by comprising a lining pipe joint (3), a lining repair hose (1), an outer sleeve joint (2) and a fastening steel sleeve (4) which are coaxially attached and sleeved in sequence from inside to outside;
the lining pipe joint (3) comprises a lining support fixing pipe (302), a flange connecting pipe (305), a joint connecting flange (301) and a working pipe connecting flange (306); the lining support fixing pipe (302) and the flange connecting pipe (305) are coaxially connected into a whole along the axial direction, the inner wall of a pipe body formed by the lining support fixing pipe and the flange connecting pipe is of a cylindrical structure, and a joint connecting flange (301) is externally connected to the joint of the lining support fixing pipe and the flange connecting pipe along the circumferential direction; an annular sealing fixing groove (303) is formed in the middle section of the outer wall of the inner lining supporting fixing pipe (302) along the circumferential direction, and a working pipe connecting flange (306) is externally connected to the outer end of the flange connecting pipe (305); the working pipe connecting flange (306) is used for being connected with a flange of a normal thermal working pipe (6) through connecting bolts (307);
the lining repair hose (1) is of a circular tube structure and is sleeved on the outer wall of the lining support fixing tube (302); one end of the lining repair hose (1) is used for extending into the thermal working pipe (5) to be repaired and being attached to the inner wall of the thermal working pipe, and the other end of the lining repair hose is attached to one side of the joint connecting flange (301);
the outer sleeve joint (2) comprises an outer joint flange (201) and an outer sleeve working pipe (202); the outer sleeve working pipe (202) is of a circular pipe structure, and two ends of the outer sleeve working pipe are respectively externally connected with outer joint flanges (201); the outer joint flange (201) at one end is connected with the flange of the thermal working pipe (5) to be repaired through a connecting bolt (307), and the outer joint flange (201) at the other end is connected with the joint connecting flange (301) through the connecting bolt (307);
the fastening steel sleeve (4) is sleeved on the outer wall of the outer sleeve working tube (202) positioned at the outer side of the sealing and fixing groove (303) and is used for embedding the lining repairing hose (1) and the outer sleeve joint (2) positioned at the outer side of the sealing and fixing groove (303) into the sealing and fixing groove (303).
2. The lining repair joint connection and pipeline mechanical fixing device of the heating pipeline according to claim 1, wherein the fastening steel sleeve (4) comprises a fastening hoop (401) and mounting lugs (402), and the two ends of the two semicircular fastening hoops (401) are respectively provided with the mounting lugs (402); the mounting lugs (402) are provided with fastening connecting holes (404) for inserting fastening bolts (405) to realize mounting and fixing, and the two sides of the fastening anchor ear (401) are provided with a plurality of fine adjustment fastening threaded through holes (403) for inserting fine adjustment compression bolts (406) along the circumferential direction; the fastening anchor ear (401) is arranged on the outer side of the sealing and fixing groove (303), and the radian of the bottom of the fastening anchor ear (401) is the same as that of the sealing and fixing groove (303).
3. The lining repair joint connection and pipe mechanical fixing device of a heating power pipe according to claim 1, wherein a plurality of first bolt connection holes (203) are formed in the outer joint flange (201) along the circumferential direction, and a plurality of second bolt connection holes (304) are formed in the joint connection flange (301) and the working pipe connection flange (306) along the circumferential direction.
4. The lining repair joint connection and pipe mechanical fixing device of a thermal pipeline according to claim 1, wherein the connection mode among the lining support fixing pipe (302), the flange connecting pipe (305), the joint connecting flange (301) and the working pipe connecting flange (306) is welding, and the connection mode among the outer joint flange (201) and the outer sleeve working pipe (202) is welding.
5. The lining repair joint connection and pipe mechanical fixing device of a heating power pipe according to claim 2, wherein the contact side of the fastening hoop (401) and the outer sleeve working pipe (202) is of an arc structure, and the diameter at the center of the arc structure is d 4 ＝d 303 +δ 1 +δ 202 The method comprises the steps of carrying out a first treatment on the surface of the Wherein d 303 For sealing the outside diameter delta of the pipe of the fixing groove (303) 1 For lining the wall thickness delta of the repair hose (1) 202 Is the wall thickness of the outer working tube (202).
6. The lining repair joint connection and pipe mechanical fixing device of a heating power pipe according to claim 2, wherein fine tuning fastening threaded through holes (403) formed on two sides of the fastening hoops (401) are symmetrically distributed.
7. A method for connecting and fixing a lining repair joint and a pipeline mechanical fixing device by using the heating pipeline according to any one of claims 1 to 6, which is characterized by comprising the following steps:
the lining repair hose (1) is nested on the outer wall of the lining pipe joint (3), the inner wall of a pipeline of the lining repair hose (1) is tightly attached to the outer wall of the lining support fixing pipe (302), and an annular cavity is formed between the lining repair hose and the sealing fixing groove (303); one end of the lining repair hose (1) extends into the thermal working pipe (5) to be repaired and is attached to the inner wall of the thermal working pipe, and the other end of the lining repair hose is attached to one side of the joint connecting flange (301); the outer sleeve working tube (202) is nested on the outer wall of the lining restoration hose (1), and the outer wall of the lining restoration hose (1) is tightly attached to the inner wall of the outer sleeve working tube (202); an outer joint flange (201) at one end of the outer sleeve working pipe (202) is connected with a flange of the thermal working pipe (5) to be repaired through a connecting bolt (307), and an outer joint flange (201) at the other end is connected with a joint connecting flange (301) through the connecting bolt (307); the working pipe connecting flange (306) is connected with the flange of the normal thermal working pipe (6) through a connecting bolt (307), so that the primary connection of the lining repair joint and the primary fixation of the lining repair hose (1) are completed;
two fastening hoops (401) of the fastening steel sleeve (4) are assembled outside the outer sleeve joint (2), and the installation positions of the two fastening hoops correspond to the sealing and fixing grooves (303); the fastening bolts (405) are respectively connected with the mounting lugs (402) of the two fastening hoops (401) at the same end, so that the preliminary fixing of the fastening steel sleeve (4) is finished; the two ends of the fastening steel sleeve (4) are respectively and symmetrically screwed with the fastening bolts (405) inwards until no space exists at the joint of the two fastening hoops (401); in the process, the two semicircular annular fastening hoops (401) are gradually closed, the outer sleeve working tube (202) is subjected to annular extrusion force, and bending deformation is generated inwards along the contact surface of the outer sleeve working tube and the fastening hoops (401); meanwhile, the lining repair hose (1) at the same position is subjected to circumferential extrusion force to generate similar inward bending deformation; after the two fastening hoops (401) are completely assembled and fixed, the bending radians of the outer sleeve working pipe (202) and the lining repair hose (1) at the deformation position are matched with the bottom radians of the fastening hoops (401); at the moment, the inner wall of the lining repair hose (1) is tightly attached to the sealing fixing groove (303), so that the lining repair hose (1) is further fixed;
through fine adjustment fastening screw thread through holes (403) circumferentially formed in the left side and the right side of the fastening hoop (401), fine adjustment compression bolts (406) are symmetrically screwed in the circumferential direction to adjust the bending radian of the contact surface between the outer sleeve working tube (202) and the bottom of the fastening hoop (401), the outer sleeve working tube (202) and the lining repair hose (1) are further compressed, the inner wall of the lining repair hose (1) is further attached to the sealing fixing groove (303), mechanical fixing of the lining repair hose (1) is completed, and finally the fixed connection of the lining repair joint is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311699129.1A CN117685445A (en) | 2023-12-12 | 2023-12-12 | Lining repair joint connection of thermal pipeline and pipeline mechanical fixing device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311699129.1A CN117685445A (en) | 2023-12-12 | 2023-12-12 | Lining repair joint connection of thermal pipeline and pipeline mechanical fixing device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117685445A true CN117685445A (en) | 2024-03-12 |
Family
ID=90125942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311699129.1A Pending CN117685445A (en) | 2023-12-12 | 2023-12-12 | Lining repair joint connection of thermal pipeline and pipeline mechanical fixing device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117685445A (en) |
-
2023
- 2023-12-12 CN CN202311699129.1A patent/CN117685445A/en active Pending
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