CN116951172A - A trenchless polyethylene PE water supply pipeline and its traction device - Google Patents

Abstract

The invention discloses a trenchless polyethylene PE water supply pipeline and its traction device, which belongs to the field of pipeline technology and includes a pipeline main body and a traction device. The pipeline main body is composed of a main pipe and a corrugated inner pipe arranged in the main pipe. A plurality of reinforcing ribs are evenly arranged on the outer wall of the main pipeline, and a pressure-bearing expansion layer is arranged between adjacent reinforcing ribs. A delivery through hole is provided on the main pipeline for transporting hardened expansion agent; the traction device includes a traction end cover, and the traction device One end of the end cover is provided with a blocking cover that matches the main pipeline, and the outer wall of the traction end cover is connected to a snap-in traction plate through a plurality of inclined plane connectors. By arranging reinforcing ribs on the outside of the main pipeline and providing sawtooth grooves on the reinforcing ribs, the present invention avoids abrasion of the main pipeline and the inner wall of the laying channel without affecting the bending requirements of the main pipeline, thereby ensuring the strength of the pipeline and reducing the The friction resistance during the traction process has the effect of improving the speed of traction construction.

Description

A trenchless polyethylene PE water supply pipeline and its traction device

Technical field

The present invention relates to the field of pipeline technology, and in particular to a trenchless polyethylene PE water supply pipeline and its traction device.

Background technique

The trenchless construction of pipelines is widely used to carry out oil and gas pipelines, gas, electricity, etc. Laying, replacement and repair of water supply and drainage pipelines, telecommunications, cable TV lines, etc.

In the trenchless construction of water supply pipelines, the pipelines are mainly laid with polyethylene PE pipelines. Currently, there is a lack of pipelines specifically designed for trenchless construction on the market. Ordinary PE pipelines have the following defects during trenchless construction. :

First, when laying construction in some underground areas with a lot of sand and gravel, when the pipeline is towed, the outer wall of the PE pipe will be rubbed by the sand and gravel, causing the pipe wall to become thinner. Some pipelines will also be grooved by hard stones. This As a result, the pipeline is easily ruptured at the damaged location when transporting high-pressure water flow, affecting the overall life of the PE pipeline;

Secondly, when the PE pipeline is being pulled, the steering traction force and the frictional resistance of the soil will cause the pipe body to have rotational torque. However, during the construction process, the construction personnel cannot determine whether there is torque in the pipe body, which carries internal torsion stress. The yield strength of pipelines will be affected when transporting high-pressure water flow;

Furthermore, some trenchless pipelines bear greater pressure the deeper they go underground. In order to ensure the pressure of the pipeline, the thickness of the pipeline itself will be increased. However, the increase in thickness will affect the bending angle of the pipeline during traction, making construction difficult. During the process, the length of the construction wells at both ends needs to meet the bending requirements of the PE pipe, and the increase in thickness will increase the weight of the PE pipe and affect the traction efficiency;

Moreover, when the trenchless pipeline is being towed, the end of the pipe and the towing device need to be fastened and installed. After towing, the installation part will need to be cut off due to openings or threaded grooves, which makes the entire pipeline laying process difficult. Resulting in a large amount of pipe cutting and waste, resulting in increased costs;

In view of the above problems, a trenchless polyethylene PE water supply pipeline and its traction device are proposed.

Contents of the invention

The purpose of the present invention is to solve the problem in the prior art that current pipelines are not suitable for laying trenchless pipelines, and propose a trenchless polyethylene PE water supply pipeline and its traction device.

In order to achieve the above objects, the present invention adopts the following technical solutions:

A trenchless polyethylene PE water supply pipeline and its traction device, including a pipe body and a traction device. The pipe body is composed of a main pipe and a corrugated inner pipe arranged in the main pipe. The outer wall of the main pipe is uniform. A plurality of reinforcing ribs are provided, a pressure-bearing expansion layer is provided between adjacent reinforcing ribs, and a transport through hole for transporting hardening expansion agent is provided on the main pipeline;

The traction device includes a traction end cover. One end of the traction end cover is provided with a blocking cover that matches the main pipeline. The other end of the traction end cover is provided with a "conical" diverter head. The traction end cover The outer side wall is connected to a snap-in traction plate through a plurality of inclined plane connectors, and the snap-in traction plate is provided with a hook traction opening.

Preferably, the inner wall of the main pipe is provided with a corrugated groove that is adapted to the corrugated inner pipe. The corrugated inner pipe is sleeved in the corrugated groove and is in sliding contact with the corrugated groove.

Preferably, both ends of the reinforcing ribs are provided with triangular end strips, the upper surface of the reinforcing ribs is evenly provided with zigzag grooves, and the adjacent reinforcing ribs are arranged in a "spiral progression" shape.

Preferably, the pressure-bearing expansion layer is composed of two oppositely arranged triangular plates, and a traction column is provided in the middle of the pressure-bearing expansion layer between the two triangular plates.

Preferably, there are multiple conveying through holes and they are distributed along an axis. The conveying through holes are located in the middle of the pressure-bearing expansion layer. The conveying through-holes located at the pressure-bearing expansion layer have a penetrating side wall. The traction column extends through the injection hole into the conveying through hole, and is connected with a blocking ball.

Preferably, the bottom of the clamping traction plate is densely provided with traction racks, and the traction racks are adapted to the sawtooth grooves provided on the reinforcing ribs.

Preferably, the inner wall of the corrugated groove is evenly provided with a plurality of contact seat grooves, and the outer wall of the corrugated inner tube is evenly provided with a plurality of contact seats that are adapted to the contact seat grooves.

Compared with the existing technology, the beneficial effects of the present invention are:

1. By setting the main body of the pipeline as a combination of a corrugated inner pipe and a main pipe, this solution can eliminate the torsional internal stress on the main body of the pipe during the traction process through the rotation of the corrugated inner pipe, thus avoiding the impact of internal stress on the pipeline when transporting water at high pressure. Impact.

2. The present invention is designed for the trenchless construction method. Reinforcing ribs are set outside the main pipe, and sawtooth grooves are provided on the reinforcing ribs, so as to avoid bending of the main pipe without affecting the bending requirements of the main pipe. With the wear of the inner wall of the laying channel, it ensures the strength of the pipeline and reduces the friction resistance during the pulling process, and improves the speed of pulling construction.

3. The present invention sets a pressure-bearing expansion layer on the side wall of the reinforced rib, and injects the hardening expansion agent through the transportation through hole opened in the main pipe, thereby reducing the weight of the main pipe during traction, increasing the traction speed, and allowing pressure-bearing expansion. After the hardening expansion agent is solidified, the layer will form an annular support surface with the reinforcing ribs opposite the main pipeline, and support the pipeline, increase the pressure of the pipeline, increase the construction depth of the pipeline, and adapt to more construction environments.

4. The present invention designs the traction device based on the trenchless pipeline. By combining the traction rack on the traction plate and the serrated grooves on the reinforcing ribs, the pipeline is stressed during traction, and the pipeline can be pulled without damaging the pipeline. Under the premise, the traction pipeline can be laid underground, which can significantly reduce the construction cost and improve the construction efficiency.

Description of the drawings

Figure 1 is a schematic three-dimensional structural diagram of a polyethylene PE trenchless pipeline for water supply transportation and its traction device proposed by the present invention;

Figure 2 is a schematic structural diagram of the combination of a polyethylene PE trenchless pipeline for water supply and its traction device proposed by the present invention;

Figure 3 is a schematic cross-sectional structural diagram of the main body of the pipe in a polyethylene PE water supply transportation pipe without excavation and its traction device proposed by the present invention;

Figure 4 is an enlarged structural schematic diagram of position A in Figure 3;

Figure 5 is a schematic cross-sectional structural diagram of a traction device in a polyethylene PE water supply transportation pipeline proposed by the present invention;

Figure 6 is a schematic structural diagram of the tail end of the main body of the polyethylene PE water supply transportation pipe and its traction device proposed by the present invention;

Figure 7 is a schematic diagram of the reinforcing rib state when the pipeline is bent.

In the picture: 1. Main pipeline; 2. Corrugated inner pipe; 3. Reinforced ribs; 4. Pressure-bearing expansion layer; 5. Transport through hole; 6. Traction end cover; 7. Blocking cover; 8. Diverter head; 9 , Inclined connector; 10. Snap-in traction plate; 11. Hook traction port; 12. Corrugated groove; 13. Triangular end bar; 14. Sawtooth groove; 15. Traction column; 16. Injection hole; 17. Blocking ball; 18. Traction rack; 19. Contact base.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on The embodiments of the present invention and all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

Example

Referring to Figures 1-7, a trenchless polyethylene PE water supply pipeline and its traction device include a pipeline main body and a traction device. The pipeline main body is composed of a main pipe 1 and a corrugated inner pipe 2 arranged in the main pipe 1. , the inner wall of the main pipe 1 is provided with a corrugated groove 12 that matches the corrugated inner pipe 2. The corrugated inner pipe 2 is sleeved in the corrugated groove 12 and is in sliding contact with the corrugated groove 12;

Further, the inner wall of the inner groove of the corrugated groove 12 is evenly provided with a plurality of contact seat grooves, and the outer wall of the corrugated inner tube 2 is evenly provided with a plurality of contact seats 19 that match the contact seat grooves.

What needs to be explained is that the corrugated inner pipe 2 is a polyethylene PE pipe, and there is a certain gap between it and the corrugated groove 12. When there is no water flow inside, the contact seat 19 is not in the contact seat groove. At this time, The corrugated groove 12 can be rotated to eliminate torsional stress. When the water pipeline is used, the internal water pressure will cause the corrugated inner pipe 2 to expand outward, which causes the contact seat 19 to move into the contact seat groove to realize the corrugated groove. Effective combined connection between 12 and main pipe 1.

The advantage of using the above structure is that in this plan, the main pipe is set as the main pipe 1 and the corrugated inner pipe 2. When the pipe main body rotates during the traction process, the main pipe 1 cannot rotate to relieve stress due to friction. When torsional internal stress is caused in the main body of the pipeline, the corrugated inner pipe 2 can be rotated so that the corrugated inner pipe 2 in direct contact with the conveying water flow can rotate to ensure that the corrugated inner pipe 2 in contact with the water flow will not generate torsion. Ensure the use of the main body of the pipeline and reduce the impact of internal stress on the pipeline.

A plurality of reinforcing ribs 3 are evenly provided on the outer wall of the main pipe 1. Furthermore, triangular end bars 13 are provided at both ends of the reinforcing ribs 3. Sawtooth grooves 14 are evenly provided on the upper surface of the reinforcing ribs 3. The reinforcing ribs 3 are arranged in a "spiral progression" shape;

It should be noted that the design of the polyethylene PE pipeline can meet the bending requirement during trenchless pipeline construction, and the installation of the reinforcing rib 3 will affect the complete angle of the pipeline main body. In order to ensure the bending angle, this plan By arranging the sawtooth grooves 14, the setting of the sawtooth grooves 14 will compensate for the length occupied by the bending angle after bending, as shown in Figure 7, thereby improving the strength of the pipe body while ensuring the curvature of the pipe.

It is worth noting that the setting of the triangular end bars 13 reduces the resistance between the ends of the reinforcing ribs 3 and the soil during traction. The number of the reinforcing ribs 3 is not less than 4. Refer to Figure 6 for the reinforcing ribs 3. The distance and height between them need to be limited, and it is necessary to ensure that when the reinforcing ribs 3 on both sides support the main body of the pipe, the main body of the pipe will not come into contact with the ground. This ensures that the reinforcing ribs 3 can carry the pipe when moving. The main body will not cause the main body of the pipe to come into contact with the ground, causing wear and tear;

Setting multiple reinforcing ribs 3 outside the main body of the pipeline has the following benefits:

One is that during the traction and transportation process, when the main body of the pipeline moves in the soil, the reinforcing ribs 3 will come into contact with the inner wall of the excavation channel without causing the outer wall of the main body of the pipeline to come into contact with the excavation channel, which can prevent the pipeline from being in contact with the excavation channel. The wear of the main body and the inner wall of the channel during traction ensures the strength of the pipe main body;

Secondly, the setting of the reinforced ribs 3 will make contact with the wall during the traction and transportation process, which will significantly reduce the contact area, thereby reducing the frictional resistance during the traction process, making it easier to achieve the effect of pulling the main body of the pipeline;

The setting of the three reinforcing ribs 3 can improve the strength of the pipeline main body, and the pressure-bearing expansion layer 4 set around it will form an annular support surface relative to the pipeline after the hardening expansion agent solidifies, which can make the pipeline buried deep underground When receiving pressure from the surroundings, the pressure can be directly transferred to the soil on the back through the annular support surface composed of the reinforced ribs 3 and the pressure-bearing expansion layer 4, thereby reducing the pressure intensity of the soil on the pipeline and improving the buried installation of the pipeline. depth to ensure the safety of the pipeline.

A pressure-bearing expansion layer 4 is provided between adjacent reinforcing ribs 3, and the main pipe 1 is provided with a delivery through hole 5 for transporting hardened expansion agent; further, the pressure-bearing expansion layer 4 is composed of two oppositely arranged triangular plates. , a traction column 15 is provided in the middle of the pressure-bearing expansion layer 4 between the two triangular plates. There are multiple conveying through holes 5, and they are distributed along the axis. The conveying through-hole 5 is located in the middle of the pressure-bearing expansion layer 4. The conveying through hole 5 located at the pressure-bearing expansion layer 4 has an injection hole 16 penetrating the side wall. The traction column 15 extends through the injection hole 16 into the conveying through hole 5 and is connected with a plugging ball 17 .

It is worth noting that the above-mentioned medium-hardening expansion agent is an infusion solidification material such as epoxy resin or polyurethane. In order to reduce the weight of the main pipe 1, the delivery through hole 5 can be set into a larger space to reduce the weight of the main pipe 1, which can be used Carry out the traction construction of the pipeline, in which the pressure-bearing expansion layer 4 is adsorbed on the outer wall of the main pipeline 1 before use in order to avoid contact with the soil during the traction process;

What needs to be explained is that the open end of the conveying through hole 5 is set on the side wall where the traction end cover 6 is installed. During the traction process, the traction end cover 6 will seal the opening, thereby avoiding mud during the traction process. Entering into the conveying through hole 5 occurs;

The filling equipment is injected from the opening of the delivery through hole 5 into the main pipeline 1 to fill the space in the delivery through hole 5 and the pressure-bearing expansion layer 4, and finally solidify. The pressure-bearing expansion layer 4 solidifies after the hardening expansion agent. Finally, it will form an annular support surface with the reinforcing rib 3 relative to the main pipe 1, and support the pipe;

The traction device includes a traction end cover 6. One end of the traction end cover 6 is provided with a blocking cover 7 that matches the main pipeline 1. The other end of the traction end cover 6 is provided with a "conical" diverter head 8. The outside of the traction end cover 6 The wall is connected to a snap-in traction plate 10 through a plurality of inclined plane connectors 9. The snap-in traction plate 10 is provided with a hook traction port 11. The upper and bottom of the snap-in traction plate 10 is densely provided with a traction rack 18. The traction rack 18 is connected with the setting The serrated grooves 14 on the reinforcing ribs 3 are adapted;

The traction device of the present invention is designed according to the trenchless pipeline. Compared with the existing traction device, it needs to destroy the pipeline. When towing, only the traction hook and the hook traction opening 11 need to be fastened and installed, and then the traction device and the hook traction opening 11 need to be fastened and installed. The main body of the pipeline is installed. During installation, the plugging cover 7 ensures the sealing of the pipeline. The snap-in traction plate 10 provided on it is misaligned with the reinforcing rib 3. Then, by rotating the traction device, the snap-in traction plate 10 is The traction rack 18 is interlaced with the serrated grooves 14 on the reinforcing rib 3, and the traction plate 10 can be connected to apply traction force to the reinforcing rib 3 to pull the main body of the pipeline to move. The whole process will not cause damage to the pipeline and reduce the cost. Reduce construction costs and improve construction efficiency.

The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person familiar with the technical field can, within the technical scope disclosed in the present invention, implement the technical solutions of the present invention. Equivalent substitutions or changes of the inventive concept thereof shall be included in the protection scope of the present invention.

Claims (7)

1. The utility model provides a polyethylene PE is non-excavation pipeline and draw gear for water feeding transport, includes pipeline main part and draw gear, its characterized in that, the pipeline main part comprises trunk line (1) and ripple inner tube (2) that set up in trunk line (1), trunk line (1) lateral wall evenly is provided with a plurality of reinforcing rib (3), is provided with pressure-bearing expansion layer (4) between adjacent reinforcing rib (3), offer on trunk line (1) and carry out conveying through-hole (5) of hardening expansion agent;

the traction device comprises a traction end cover (6), a blocking cover (7) matched with the main pipeline (1) is arranged at one end of the traction end cover (6), a conical shunt head (8) is arranged at the other end of the traction end cover (6), a clamping traction plate (10) is connected to the outer side wall of the traction end cover (6) through a plurality of inclined surface connecting pieces (9), and a hook traction opening (11) is formed in the clamping traction plate (10).

2. The Polyethylene (PE) non-excavation pipeline for water feeding and traction device thereof according to claim 1, wherein a corrugated groove (12) matched with the corrugated inner pipe (2) is formed in the inner side wall of the main pipeline (1), and the corrugated inner pipe (2) is sleeved in the corrugated groove (12) and is in sliding contact with the corrugated groove (12).

3. The Polyethylene (PE) non-excavation pipeline for water feeding and traction device thereof according to claim 1, wherein triangular end strips (13) are arranged at two ends of each reinforcing rib (3), saw tooth grooves (14) are uniformly formed in the upper surface of each reinforcing rib (3), and the adjacent reinforcing ribs (3) are arranged in a spiral progressive mode.

4. The trenchless pipeline for Polyethylene (PE) water transportation and a traction device thereof according to claim 1, wherein the pressure-bearing expansion layer (4) is composed of two oppositely arranged triangular plates, and a traction column (15) is arranged in the middle of the pressure-bearing expansion layer (4) between the two triangular plates.

5. The Polyethylene (PE) non-excavation pipeline for water feeding and traction device thereof according to claim 4, wherein a plurality of conveying through holes (5) are formed and distributed in an axis, the positions of the conveying through holes (5) are located in the middle of a pressure-bearing expansion layer (4), the conveying through holes (5) located in the pressure-bearing expansion layer (4) are provided with material injection holes (16) penetrating through the side walls, and the traction columns (15) extend into the conveying through holes (5) through the material injection holes (16) and are connected with blocking balls (17).

6. The polyethylene PE is fed water and is used non-excavation pipeline and draw gear thereof according to claim 1, wherein draw racks (18) are densely distributed at the bottom of the clamping draw plate (10), and the draw racks (18) are matched with sawtooth grooves (14) formed in the reinforcing ribs (3).

7. The polyethylene PE is fed water and is used non-excavation pipeline and draw gear thereof according to claim 2, wherein a plurality of touch seat grooves are evenly formed in the inner groove inner wall of the corrugated groove (12), and a plurality of touch seats (19) matched with the touch seat grooves are evenly formed in the outer side wall of the corrugated inner pipe (2).