Double-pipe connecting module and double-pipe traction system

Abstract

The invention relates to the technical field of pipeline laying in miniature tunnels, in particular to a double-pipe connecting module and a double-pipe traction system.The double-pipe connecting module comprises a double-pipe connecting piece, the double-pipe connecting piece comprises a first supporting part, a secondary pipeline connecting part, a middle connecting part and a main pipeline connecting part, and the secondary pipeline connecting part, the middle connecting part and the main pipeline connecting part are sequentially connected in the first direction; the length direction of the first supporting part is inclined relative to the first direction, one end of the first supporting part in the length direction of the first supporting part is a first fixed end, the other end of the first supporting part is a first free end, the first fixed end is fixed to the main pipeline connecting part, and the first free end is fixed to the main pipeline connecting part. The first free end is arranged close to the secondary pipeline connecting part, and the first free end is used for abutting against the inner wall of the tunnel. The invention aims to provide a double-pipe connecting module and a double-pipe traction system aiming at at least one technical problem related in the background technology.

Description

Technical Field

[0001] The present application relates to the technical field of laying pipelines in micro tunnels, and in particular to a double-tube connection module and a double-tube traction system. Background Art

[0002] During the construction of long-distance pipelines, some pipelines need to cross factory roads, important facilities in the factory, rivers and other areas. These areas cannot be excavated to lay underground long-distance pipelines. Generally, shield machine jacking construction technology is used to dig tunnels and use power to pull the pipeline through the tunnel to achieve pipeline laying. However, in some cases, it is necessary to lay two pipelines arranged in the vertical direction in the tunnel, and the existing technology cannot achieve the simultaneous laying of two pipelines arranged in the vertical direction in the tunnel. Summary of the invention

[0003] The purpose of the present application is to provide a double-tube connection module and a double-tube traction system in view of at least one technical problem involved in the background technology.

[0004] In order to achieve the above objectives, this application adopts the following technical solutions:

[0005] One aspect of the present application provides a double-tube connection module, including a double-tube connector, the double-tube connector including a first support portion, and a secondary pipe connection portion, an intermediate connection portion and a main pipe connection portion connected in sequence in a first direction, the length direction of the first support portion is inclined relative to the first direction, one end of the first support portion in the length direction of the first support portion is a first fixed end, the other end of the first support portion is a first free end, the first fixed end is fixed to the main pipe connection portion, the first free end is arranged close to the secondary pipe connection portion, and the first free end is used to abut against the inner wall of the tunnel.

[0006] Optionally, the double-tube connection module provided in the present application includes two first support portions, and the two first support portions are symmetrically arranged on both sides of the middle connection portion in a second direction, and the second direction is perpendicular to the first direction.

[0007] The beneficial effect of this technical solution is that in this way, the left and right sides of the double tube are supported by the first support part during the movement, which further reduces the possibility of the double tube turning over during the movement and improves the stability of the movement of the double tube.

[0008] Optionally, the secondary pipeline connection part and the main pipeline connection part are both tile-like structures, the opening of the secondary pipeline connection part is opposite to the opening of the main pipeline connection part in the first direction, the axial direction of the secondary pipeline connection part and the axial direction of the main pipeline connection part are both parallel to the third direction, and the first direction and the second direction are both perpendicular to the third direction.

[0009] The beneficial effects of this technical solution are: the tile-shaped secondary pipe connecting part facilitates the inner side of the secondary pipe connecting part to be adhered and fixed to the outer wall of the secondary pipe, and the tile-shaped main pipe connecting part facilitates the inner side of the main pipe connecting part to be adhered and fixed to the outer wall of the main pipe, thereby improving the reliability of the connection between the double-pipe connection module and the secondary pipe and the main pipe.

[0010] Optionally, the double-pipe connection module provided in the present application also includes a secondary pipe fixing half sleeve and a main pipe fixing half sleeve, the main pipe fixing half sleeve includes a half sleeve main body, the cross-section of the secondary pipe connection part and the cross-section of the half sleeve main body are both semicircular, the diameter of the secondary pipe connection part is the same as the diameter of the secondary pipe fixing half sleeve, the diameter of the main pipe connection part is the same as the diameter of the half sleeve main body, the secondary pipe fixing half sleeve and the secondary pipe connection part are detachably connected to fix the secondary pipe between the secondary pipe fixing half sleeve and the secondary pipe connection part, and the half sleeve main body and the main pipe connection part are detachably connected to fix the main pipe between the main pipe fixing half sleeve and the main pipe connection part.

[0011] The beneficial effect of this technical solution is that, on the one hand, it is convenient to fix the secondary pipeline and the main pipeline on the double-pipe connection module, and on the other hand, the main pipeline is clamped by the main pipeline fixing half sleeve and the main pipeline connecting part, and the secondary pipeline is clamped by the secondary pipeline fixing half sleeve and the secondary pipeline connecting part, so that the double-pipe connection module can firmly connect the secondary pipeline with the main pipeline as a whole. In the process of pulling the double pipes into the tunnel, the connection between the secondary pipeline and the main pipeline is not easy to fail, thereby reducing the probability of production accidents.

[0012] Optionally, the main pipe fixing half sleeve also includes two second supporting parts, the length direction of the second supporting part is inclined relative to the first direction and the second direction, one end of the second supporting part in the length direction of the second supporting part is a second fixed end, and the other end of the second supporting part is a second free end, the second fixed end is fixed to the outside of the half sleeve main body, the second free end, the first free end and the second free end are located on the same circumference, the plane where the circumference is located is perpendicular to the third direction, and the two second supporting parts are symmetrically arranged on both sides of the half sleeve main body in the second direction.

[0013] The beneficial effect of this technical solution is that: in this way, when the main pipeline fixing half-set and the main pipeline connecting part fix the main pipeline, the second supporting parts located on both sides of the half-set main body in the tunnel support the half-set main body and the pipelines and components above, so that the double-tube connection module and the double-tube integral body are more stable and less likely to flip when moving in the tunnel, so that the first free end and the second free end are located on the same circumference. When the outer diameter of the circumference corresponds to the inner diameter of the tunnel, the first free end and the second free end can both fit the inner wall of the tunnel, or the gap between the first free end and the inner wall of the tunnel is smaller, further reducing the possibility of flipping of the double-tube connection module and the double-tube integral body during movement.

[0014] Optionally, the main pipe fixing half sleeve also includes two third support parts fixed on the half sleeve body, the two third support parts are symmetrically arranged in the second direction, the two third support parts are located between the two second support parts in the second direction, and the first free end, the second free end and the free end of the third support part are all on the same circumference.

[0015] The beneficial effect of this technical solution is that: in this way, the stability of the double-tube connection module and the whole formed by the double tubes during the movement is further improved by the provision of the third support part, and the possibility of overturning is reduced.

[0016] Another aspect of the present application provides a double-tube traction system, including a traction module, a bracket module and a double-tube connection module provided by the present application, the traction module includes a winch, the winch is used to be set at one end of the tunnel, the bracket module is used to be set at the other end of the tunnel, the bracket module is used to support the main pipeline, and the winch is used to pull the main pipeline.

[0017] Optionally, the support module includes a bottom beam, a plurality of supports and a plurality of pipe threaders, the bottom beam is used to extend in the length direction of the tunnel, each of the supports is fixed to the bottom beam, each of the supports is arranged in the length direction of the bottom beam, each of the pipe threaders is fixed one by one to the top of each of the supports, the top of each of the pipe threaders is used to set the main pipeline, and the height of the top of the pipe threader is not lower than the height of the bottom wall of the tunnel.

[0018] The beneficial effect of this technical solution is that: in this way, the double-tube connection module and the whole formed by the double tubes can move along the arrangement direction of each pipe penetration device and smoothly enter the tunnel.

[0019] Optionally, the pipe threader includes a base and two guide rollers fixed to the top of the base, the axial directions of the two guide rollers are perpendicular to the length direction of the bottom beam, and the axial direction of one guide roller intersects with the axial direction of the other guide roller in a V shape.

[0020] The beneficial effect of this technical solution is that: in this way, the main pipeline can be placed on two guide rollers, and the position of the main pipeline in the length direction perpendicular to the bottom beam and the vertical direction is limited by the two guide rollers. When the double-tube connection module and the whole formed by the double tube are towed, the guide rollers can guide the movement of the whole, thereby improving the accuracy of traction.

[0021] Optionally, the traction module also includes a traction head and a traction rope, the traction head includes a connecting pipe and a traction plate, the diameter of the connecting pipe is the same as the diameter of the main pipe, the connecting pipe is used to be coaxially arranged with the main pipe, one end of the connecting pipe is fixed to the end of the main pipe, the other end of the connecting pipe is fixedly connected to the traction plate, the traction plate is arranged perpendicular to the end surface of the connecting pipe, a traction hole is arranged on the connecting plate, the traction hole is located in the axial direction of the connecting pipe, one end of the traction rope is fixed to the winch, and the other end of the traction rope is fixed to the traction hole.

[0022] The beneficial effect of this technical solution is that: in this way, the traction rope is connected to the traction double-tube connection module and the double-tube integral body through the traction hole, and starting the winch can move the traction double-tube connection module and the double-tube integral body along the bracket module and enter the tunnel.

[0023] The technical solution provided by this application can achieve at least one of the following beneficial effects:

[0024] The double-tube connection module and double-tube traction system provided by the present application, when in use, are fixedly connected to the main pipe in the double pipe through the main pipe connection part, and are fixedly connected to the secondary pipe in the double pipe through the secondary pipe connection part, and then the secondary pipe and the main pipe fixedly connected together through the double-tube connection module are pulled into the tunnel through power traction. In the process of the double pipe entering the tunnel, the first free end of the first support part is brought into contact with the side wall of the tunnel to achieve lateral support for the double pipe, thereby making it difficult for the double pipe to flip over during the movement, thereby achieving the purpose of laying the double pipes arranged in the vertical direction in the tunnel.

[0025] The additional technical features and advantages of the present application will be more clearly explained in the following description, or can be understood through the specific practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the specific implementation methods of the present application, the following is a brief introduction to the drawings required for the description of the specific implementation methods. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1A schematic diagram of a structure of a field application of an implementation method of a double-tube traction system provided in an embodiment of the present application;

[0028] Figure 2 A schematic diagram of the structure of an implementation of a double-tube connection module provided in an embodiment of the present application;

[0029] Figure 3 A schematic structural diagram of an implementation of a traction head provided in an embodiment of the present application;

[0030] Figure 4 A partial structural schematic diagram of an implementation of a bracket module provided in an embodiment of the present application.

[0031] Reference numerals:

[0032] 01. Secondary pipeline; 02. Main pipeline;

[0033] 03. Double pipe connection module; 04. Top pipe receiving pit;

[0034] 05. Tunnel; 06. Tow rope;

[0035] 07. Winch; 08. Pipe jacking launch pit;

[0036] 09. Bracket module; 10. Secondary pipe fixing half set;

[0037] 11. Secondary pipe connection part; 12. Half set of main body;

[0038] 13. The third supporting portion; 14. The second supporting portion;

[0039] 15. Main pipeline connection part; 16. First supporting part;

[0040] 17. Connecting pipe; 18. Pull plate;

[0041] 19. Guide roller; 20. Base;

[0042] 21. Bracket; 22. Bottom beam;

[0043] 23. Middle connecting part; 24. Towing hole. DETAILED DESCRIPTION

[0044] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0045] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0046] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] like Figures 1 to 4 As shown, one aspect of the present application provides a double-tube connection module 03, including a double-tube connector, the double-tube connector including a first support portion 16, and a secondary pipe connection portion 11, an intermediate connection portion 23 and a main pipe connection portion 15 connected in sequence in a first direction, the length direction of the first support portion 16 is inclined relative to the first direction, and in the length direction of the first support portion 16, one end of the first support portion 16 is a first fixed end, and the other end of the first support portion 16 is a first free end, the first fixed end is fixed to the main pipe connection portion 15, the first free end is arranged close to the secondary pipe connection portion 11, and the first free end is used to abut against the inner wall of the tunnel 05.

[0048] The double-tube connection module 03 provided in the present application is fixedly connected to the main pipe 02 in the double pipe through the main pipe connection part 15, and is fixedly connected to the secondary pipe 01 in the double pipe through the secondary pipe connection part 11, and then the secondary pipe 01 and the main pipe 02 fixedly connected together by the double-tube connection module 03 are pulled into the tunnel 05 by power traction. In the process of the double pipe entering the tunnel 05, the first free end of the first support part 16 is in contact with the side wall of the tunnel 05 to achieve lateral support for the double pipe, thereby making it difficult for the double pipe to flip over during the movement, thereby achieving the purpose of laying the double pipes arranged in the vertical direction in the tunnel 05.

[0049] Optionally, the double-tube connection module 03 provided in the embodiment of the present application includes two first support parts 16 symmetrically arranged on both sides of the middle connection part 23 in the second direction, and the second direction is perpendicular to the first direction. In this way, the left and right sides of the double tube are supported by the first support parts 16 during the movement, further reducing the possibility of the double tube flipping during the movement and improving the stability of the double tube movement.

[0050] Optionally, the secondary pipe connection part 11 and the main pipe connection part 15 are both tile-shaped structures, the opening of the secondary pipe connection part 11 is opposite to the opening of the main pipe connection part 15 in the first direction, the axial direction of the secondary pipe connection part 11 and the axial direction of the main pipe connection part 15 are parallel to the third direction, and the first direction and the second direction are perpendicular to the third direction. The tile-shaped secondary pipe connection part 11 facilitates the inner side of the secondary pipe connection part 11 to be attached and fixed to the outer wall of the secondary pipe 01, and the tile-shaped main pipe connection part 15 facilitates the inner side of the main pipe connection part 15 to be attached and fixed to the outer wall of the main pipe 02, thereby improving the reliability of the connection between the double-tube connection module 03 and the secondary pipe 01 and the main pipe 02. In the embodiment of the present application, the main pipe connection part 15 and the secondary pipe 01, and the main pipe connection part 15 and the main pipe 02 can be bonded.

[0051] Optionally, the double-pipe connection module 03 provided in the embodiment of the present application also includes a secondary pipe fixing half sleeve 10 and a main pipe fixing half sleeve, the main pipe fixing half sleeve includes a half sleeve main body 12, the cross-section of the secondary pipe connection part 11 and the cross-section of the half sleeve main body 12 are both semicircular, the diameter of the secondary pipe connection part 11 is the same as the diameter of the secondary pipe fixing half sleeve 10, the diameter of the main pipe connection part 15 is the same as the diameter of the half sleeve main body 12, the secondary pipe fixing half sleeve 10 and the secondary pipe connection part 11 are detachably connected to fix the secondary pipe 01 between the secondary pipe fixing half sleeve 10 and the secondary pipe connection part 11, and the half sleeve main body 12 and the main pipe connection part 15 are detachably connected to fix the main pipe 02 between the main pipe fixing half sleeve and the main pipe connection part 15. In this way, on the one hand, it is convenient to fix the secondary pipeline 01 and the main pipeline 02 on the double-pipe connection module 03; on the other hand, through the clamping effect of the main pipeline fixing half sleeve and the main pipeline connecting part 15 on the main pipeline 02, and through the clamping effect of the secondary pipeline fixing half sleeve 10 and the secondary pipeline connecting part 11 on the secondary pipeline 01, the double-pipe connection module 03 can firmly connect the secondary pipeline 01 and the main pipeline 02 as a whole; in the process of pulling the double pipes into the tunnel 05, the connection between the secondary pipeline 01 and the main pipeline 02 is not easy to fail, thereby reducing the probability of production accidents.

[0052] Optionally, the main pipe fixing half sleeve also includes two second support portions 14, the length direction of the second support portion 14 is inclined relative to the first direction and the second direction, one end of the second support portion 14 in the length direction of the second support portion 14 is a second fixed end, and the other end of the second support portion 14 is a second free end, the second fixed end is fixed to the outside of the half sleeve main body, the second free end, the first free end and the second free end are located on the same circumference, the plane where the circumference is located is perpendicular to the third direction, and the two second support portions 14 are symmetrically arranged on both sides of the half sleeve main body 12 in the second direction. In this way, after the main pipeline fixing half sleeve and the main pipeline connecting part 15 fix the main pipeline 02, the second supporting parts 14 located on both sides of the half sleeve main body 12 in the tunnel 05 support the half sleeve main body 12 and the pipelines and components above, so that the double-tube connecting module 03 and the whole formed by the double pipe are more stable and less likely to flip when moving in the tunnel 05, so that the first free end and the second free end are located on the same circumference. When the outer diameter of the circumference corresponds to the inner diameter of the tunnel 05, the first free end and the second free end can both fit with the inner wall of the tunnel 05, or the gap between the first free end and the inner wall of the tunnel 05 is smaller, further reducing the possibility of flipping of the double-tube connecting module 03 and the whole formed by the double pipe during movement.

[0053] Optionally, the main pipeline fixing half sleeve also includes two third support parts 13 fixed on the half sleeve body, the two third support parts 13 are symmetrically arranged in the second direction, the two third support parts 13 are located between the two second support parts 14 in the second direction, and the first free end, the second free end and the free end of the third support part 13 are all on the same circumference. In this way, the stability of the double-tube connection module 03 and the whole formed by the double pipe during the movement is further improved by the arrangement of the third support part 13, and the possibility of overturning is reduced. The double-tube connection module 03 provided in the embodiment of the present application can play a role in corrosion protection because it can isolate the main pipeline 02 and the secondary pipeline 01 from the inner wall of the tunnel 05.

[0054] Another aspect of the present application provides a double-tube traction system, including a traction module, a bracket module 09 and a double-tube connection module 03 provided in an embodiment of the present application, the traction module includes a winch 07, the winch 07 is used to be set at one end of the tunnel 05, the bracket module 09 is used to be set at the other end of the tunnel 05, the bracket module is used to support the main pipeline 02, and the winch 07 is used to pull the main pipeline 02.

[0055] The double-tube traction system provided in the present application adopts the double-tube connection module 03 provided in the present application. When in use, the main pipe connection part 15 is fixedly connected to the main pipe 02 in the double pipe, and the secondary pipe connection part 11 is fixedly connected to the secondary pipe 01 in the double pipe. Then, the secondary pipe 01 and the main pipe 02 fixedly connected together by the double-tube connection module 03 are pulled into the tunnel 05 by power traction. In the process of the double pipe entering the tunnel 05, the first free end of the first support part 16 is in contact with the side wall of the tunnel 05 to achieve lateral support for the double pipe, so that the double pipe is not easy to flip over during the movement, thereby achieving the purpose of laying the double pipes arranged in the vertical direction in the tunnel 05.

[0056] Optionally, the support module 09 includes a bottom beam 22, a plurality of supports 21 and a plurality of pipe-piercing devices, the bottom beam 22 is used to extend in the length direction of the tunnel 05, each of the supports 21 is fixed to the bottom beam 22, each of the supports 21 is arranged in the length direction of the bottom beam 22, each of the pipe-piercing devices is fixed to the top of each of the supports 21 in a one-to-one correspondence, the top of each of the pipe-piercing devices is used to set the main pipeline, and the height of the top of the pipe-piercing device is not lower than the height of the bottom wall of the tunnel 05. In this way, the double-tube connection module 03 and the whole formed by the double pipes can move along the arrangement direction of each pipe-piercing device and smoothly enter the tunnel 05.

[0057] Optionally, the pipe threader includes a base 20 and two guide rollers 19 fixed on the top of the base 20, the axial directions of the two guide rollers 19 are perpendicular to the length direction of the bottom beam 22, and the axial direction of one guide roller 19 intersects with the axial direction of the other guide roller 19 to form a V shape. In this way, the main pipe 02 can be placed on the two guide rollers 19, and the position of the main pipe 02 in the length direction perpendicular to the bottom beam 22 and the vertical direction is limited by the two guide rollers 19. When the double-tube connection module 03 and the whole formed by the double pipes are pulled, the guide rollers 19 can guide the movement of the whole, thereby improving the pulling accuracy.

[0058] Optionally, the traction module further includes a traction head and a traction rope 06, the traction head includes a connecting pipe 17 and a traction plate 18, the diameter of the connecting pipe 17 is the same as the diameter of the main pipeline 02, the connecting pipe 17 is used to be coaxially arranged with the main pipeline 02, one end of the connecting pipe 17 is fixed to the end of the main pipeline 02, the other end of the connecting pipe 17 is fixedly connected to the traction plate 18, the traction plate 18 is arranged perpendicular to the end surface of the connecting pipe 17, a traction hole 24 is arranged on the connecting plate, the traction hole 24 is located in the axial direction of the connecting pipe 17, one end of the traction rope 06 is fixed to the hoist 07, and the other end of the traction rope 06 is fixed to the traction hole 24. In the embodiment of the present application, the traction rope 06 is preferably a steel wire rope. In this way, the traction rope 06 is connected to the traction hole 24 to traction the double-tube connection module 03 and the whole formed by the double pipes, and the hoist 07 is started to traction the double-tube connection module 03 and the whole formed by the double pipes along the bracket 21 module and enter the tunnel 05.

[0059] The specific setting steps of the double-tube traction system provided in this application are as follows:

[0060] A winch 07 is installed in the jacking launch pit 08, and the winch 07 is used to pull the double-tube connection module 03 and the whole formed by the double pipes;

[0061] A pipeline laying trench is excavated on the side of the jacking receiving pit 04 to arrange the pipe section that needs to be pulled. The length of the trench is preferably 30 meters, and the depth is preferably the jacking depth plus one meter;

[0062] Arrange temporary pipe bracket 21 and pipe threader to support double pipe connection module 03 and the whole formed by double pipes and serve as temporary support device during traction;

[0063] Weld the connecting pipe 17 and the traction plate 18 of the traction head together;

[0064] The main pipe 02 is installed on the top of the pipe penetration device, and then the double pipe connection module 03 is installed on the main pipe 02. The double pipe connection module 03 is used to support the secondary pipe and protect the pipe from corrosion;

[0065] After the towed pipeline is installed, the winch 07 and the towing head are connected with a wire rope;

[0066] After the first pipe is pulled into tunnel 05, the subsequent pipe sections are installed in sequence, with the appropriate length of each installation being 24 meters.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. Double-tube connection module, characterized in that: It includes a double-tube connector, which includes a first support portion, and a secondary pipeline connection portion, an intermediate connection portion and a main pipeline connection portion connected in sequence in a first direction, the length direction of the first support portion is inclined relative to the first direction, one end of the first support portion in the length direction of the first support portion is a first fixed end, and the other end of the first support portion is a first free end, the first fixed end is fixed to the main pipeline connection portion, the first free end is arranged close to the secondary pipeline connection portion, and the first free end is used to abut against the inner wall of the tunnel.

2. The double-tube connection module according to claim 1, characterized in that: The two first supporting parts are symmetrically arranged on both sides of the middle connecting part in a second direction, and the second direction is perpendicular to the first direction.

3. The double-tube connection module according to claim 2, characterized in that: The secondary pipeline connection part and the main pipeline connection part are both tile-shaped structures. In the first direction, the opening of the secondary pipeline connection part is opposite to the opening of the main pipeline connection part. The axial direction of the secondary pipeline connection part and the axial direction of the main pipeline connection part are both parallel to the third direction, and the first direction and the second direction are both perpendicular to the third direction.

4. The double-tube connection module according to claim 3, characterized in that: It also includes a secondary pipe fixing half sleeve and a main pipe fixing half sleeve, the main pipe fixing half sleeve includes a half sleeve main body, the cross-section of the secondary pipe connecting part and the cross-section of the half sleeve main body are both semicircular, the diameter of the secondary pipe connecting part is the same as the diameter of the secondary pipe fixing half sleeve, the diameter of the main pipe connecting part is the same as the diameter of the half sleeve main body, the secondary pipe fixing half sleeve and the secondary pipe connecting part are detachably connected to fix the secondary pipe between the secondary pipe fixing half sleeve and the secondary pipe connecting part, and the half sleeve main body and the main pipe connecting part are detachably connected to fix the main pipe between the main pipe fixing half sleeve and the main pipe connecting part.

5. The double-tube connection module according to claim 4, characterized in that: The main pipe fixing half sleeve also includes two second supporting parts, the length direction of the second supporting part is inclined relative to the first direction and the second direction, one end of the second supporting part in the length direction of the second supporting part is a second fixed end, and the other end of the second supporting part is a second free end, the second fixed end is fixed to the outside of the half sleeve main body, the second free end, the first free end and the second free end are located on the same circumference, the plane where the circumference is located is perpendicular to the third direction, and the two second supporting parts are symmetrically arranged on both sides of the half sleeve main body in the second direction.

6. The double-tube connection module according to claim 5, characterized in that: The main pipe fixing half sleeve also includes two third support parts fixed on the half sleeve body, the two third support parts are symmetrically arranged in the second direction, the two third support parts are located between the two second support parts in the second direction, and the first free end, the second free end and the free end of the third support part are all on the same circumference.

7. Double-tube traction system, characterized in that: It comprises a traction module, a bracket module and a double-pipe connection module as described in any one of claims 1 to 6, wherein the traction module comprises a winch, the winch is used to be set at one end of the tunnel, the bracket module is used to be set at the other end of the tunnel, the bracket module is used to support the main pipeline, and the winch is used to pull the main pipeline.

8. The double-tube traction system according to claim 7, characterized in that: The support module includes a bottom beam, a plurality of supports and a plurality of pipe penetration devices. The bottom beam is used to extend in the length direction of the tunnel. Each of the supports is fixed to the bottom beam. Each of the supports is arranged in the length direction of the bottom beam. Each of the pipe penetration devices is fixed to the top of each of the supports in a one-to-one correspondence. The top of each of the pipe penetration devices is used to set the main pipeline. The height of the top of the pipe penetration device is not lower than the height of the bottom wall of the tunnel.

9. The double-tube traction system according to claim 8, characterized in that: The pipe threader comprises a base and two guide rollers fixed on the top of the base, the axial directions of the two guide rollers are perpendicular to the length direction of the bottom beam, and the axial direction of one guide roller intersects with the axial direction of the other guide roller in a V shape.

10. The double-tube traction system according to claim 9, characterized in that: The traction module also includes a traction head and a traction rope. The traction head includes a connecting pipe and a traction plate. The diameter of the connecting pipe is the same as the diameter of the main pipeline. The connecting pipe is used to be coaxially arranged with the main pipeline. One end of the connecting pipe is fixed to the end of the main pipeline. The other end of the connecting pipe is fixedly connected to the traction plate. The traction plate is arranged perpendicular to the end surface of the connecting pipe. A traction hole is arranged on the connecting plate. The traction hole is located in the axial direction of the connecting pipe. One end of the traction rope is fixed to the winch, and the other end of the traction rope is fixed to the traction hole.

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