Flexible pipe traction device

Abstract

The utility model relates to the field of underground pipe laying, in particular to a flexible pipe traction device. The flexible pipe traction device comprises a conical cover, a traction head is arranged at the small-diameter end of the conical cover and used for being connected with dragging equipment, a flexible pipe connecting piece is arranged in the conical cover, and the front end of the flexible pipe connecting piece extends into the conical cover and is fixedly connected with the conical cover in a sealed mode or is integrated with the conical cover. A flexible pipe connector used for being connected with a flexible pipe is arranged at the rear end of the flexible pipe connecting piece, the conical cover is provided with a part extending backwards to the flexible pipe connector of the flexible pipe connecting piece, and the part forms an umbrella cover of the flexible pipe connecting piece. One end of the device is connected with a pipe fitting, the other end of the device is provided with a traction head, the pipe fitting can be guided and dragged by dragging the traction head, friction force during dragging of the flexible pipe mainly acts on the umbrella cover through the umbrella cover extending behind the conical cover, and even if the umbrella cover is abraded and broken, foreign matter cannot enter the flexible pipe to cause blockage.

Description

Technical Field

[0001] The utility model relates to the field of laying pipes underground, and particularly relates to a flexible pipe traction device. Background Art

[0002] In order to prevent the underground pipelines from being corroded and perforated, flexible composite pipes are generally used in the current medium and low pressure gathering and transportation (oil, gas) pipe networks and the return water pipelines of injection wells. Compared with the original steel pipelines, the flexible composite pipes have the advantages of corrosion resistance, small stress, and convenient installation. In the prior art, mechanical equipment is usually used to directly drag the flexible composite pipes. During the dragging process, the pipes and cables will be passed along the way, and it is necessary to pass under the pipes and cables. Because the flexible composite pipes have a certain rigidity, the dragging end is difficult to naturally droop under the pipes and cables. Construction workers need to stand at the dragging end of the flexible composite pipes every time they pass a pipe or cable, step on or use tools to press down the dragging end to make it pass under the pipes and cables. At this time, it is easy to cause personal injuries and damage to the protective layers of the pipes, cables, and flexible composite pipes.

[0003] The Chinese invention patent application with the application publication number of CN107763305A provides a device for pipeline construction, including a traction structure and an anchoring component. The traction structure includes a pull rod and a force transmission plate. The force transmission plate is configured as a circular plate with a through hole in the center. The pull rod is inserted through the through hole and fixedly connected to the force transmission plate. One end of the pull rod away from the pipeline is provided with a traction hole, and one end close to the pipeline is provided with a radial flange. The diameter of the radial flange is larger than the diameter of the central through hole of the force transmission plate and abuts against the force transmission plate. The outer edge of the force transmission plate is fixedly connected to the anchoring component, and the anchoring component can be connected to the pipeline.

[0004] The above device can be used to guide the dragging end of the device for pipeline construction connected with the flexible composite pipe when dragging the flexible composite pipe under the pipes and cables, and does not require construction workers to manually press down the dragging end, avoiding the problems of personal injuries and damage to the protective layers of the pipes, cables, and flexible composite pipes easily caused by dragging the flexible composite pipe in the prior art. However, since the device for pipeline construction will pass through a long distance during the laying of the flexible composite pipe, one end of the anchoring component close to the conical cover has been subjected to frictional force during this process and is easily worn and broken. After one end of the anchoring component close to the conical cover is worn and broken, foreign objects can directly enter the flexible composite pipe through the break here, increasing the on-line pressure after the flexible composite pipe is put into use and causing pipeline blockage. Content of the Utility Model

[0005] The purpose of the utility model is to provide a flexible pipe traction device to solve the problem that after one end of the anchoring component of the device for pipeline construction close to the conical cover is worn and broken, foreign objects can directly enter the flexible composite pipe through the break here, resulting in an increase in the on-line pressure after the flexible composite pipe is put into use and causing pipeline blockage.

[0006] To solve the above problems, the present utility model provides a flexible pipe traction device. The flexible pipe traction device includes a conical cover. A traction head is provided at the small-diameter end of the conical cover, and the traction head is used to connect with a towing device. A flexible pipe connector is arranged inside the conical cover. The front end of the flexible pipe connector extends into the conical cover and is fixedly and sealingly connected to or integrated with the conical cover. A flexible pipe joint for connecting a flexible pipe is provided at the rear end of the flexible pipe connector. The conical cover has a portion that extends backward to the flexible pipe joint of the flexible pipe connector, and this portion forms an umbrella cover of the flexible pipe connector.

[0007] Further, the flexible pipe joint is an external thread joint, and a sealing ring groove is provided on the rear end face of the external thread joint.

[0008] Further, the rear end of the flexible pipe joint is located behind the rear end of the umbrella cover.

[0009] Further, the flexible pipe connector is a connecting pipe, and the traction head is installed on the conical cover through the rear end of the flexible pipe connector.

[0010] Further, the traction head and the conical cover are in rotational fit.

[0011] Further, a shoulder for stop cooperation with the conical cover is provided at the rear end of the traction head. A gasket for preventing the traction head from withdrawing backward from the conical cover is also provided on the traction head, and a gasket stop is provided at the front side of the gasket.

[0012] Further, the gasket stop is a stop pin provided on the traction head.

[0013] Further, an end plate is provided at the front end of the conical cover, and the traction head is installed on the end plate.

[0014] Further, the conical cover is a conical cover.

[0015] The present utility model provides a brand-new flexible pipe traction device. When the pipe traction device in the prior art towed pipe fittings forward, the friction mainly acted on the anchoring components connected to the pipes. In this device, an umbrella cover is arranged outside at the position behind the part that needs to protect and guide the flexible pipe, so that the friction when towing the flexible pipe mainly acts on the position of the umbrella cover. Compared with the prior art, the flexible pipe traction device of this device moves the easily worn position of the flexible pipe that needs to be protected and guided backward, so that even if the easily worn position is worn and broken, foreign objects cannot enter the flexible pipe to cause blockage. Description of the Drawings

[0016] Figure 1 Schematic structural diagram of the flexible pipe traction device of the present utility model when connecting a flexible pipe;

[0017] Figure 2 is Figure 1 an enlarged view of part A in

[0018] Figure 3 is a schematic exploded view of the flexible pipe traction device of the present utility model when connecting to a flexible pipe;

[0019] Figure 4 is a schematic structural view of the flexible pipe traction device of the present utility model;

[0020] Figure 5 is a schematic structural view of the sealing ring of the flexible pipe;

[0021] Figure 6 is a schematic structural view of the traction device joint and the union of the traction device connected by the flexible pipe traction device of the present utility model.

[0022] In the figure: 101, traction head; 102, shoulder; 103, gasket; 104, conical cover; 105, flexible pipe connector; 106, union of the traction device; 107, sealing ring; 108, traction device joint; 109, sealing convex ring; 110, sealing ring groove; 112, retaining pin; 113, umbrella cover; 114, flexible pipe joint; 115, end plate. Specific embodiments

[0023] The features and performance of the present utility model will be further described below in conjunction with embodiments.

[0024] First, the inventive concept of the flexible pipe traction device of the present utility model is introduced, that is, by moving the easily worn positions of the components that protect and guide the flexible pipe backward, so that the wear will not cause the communication between the flexible pipe and the outside, thereby avoiding the entry of foreign objects into the flexible pipe and causing blockage.

[0025] Next, the structure of the flexible pipe to be connected by the device of the present utility model is introduced. The flexible pipe to be connected by this device has a traction device connection structure for connecting to this device, such as Figure 1 , Figure 3 , Figure 5 , Figure 6 shown. The traction device connection structure includes a traction device joint 108, a union of the traction device 106, and a sealing ring 107. One end of the union of the traction device 106 is provided with an internal thread for connecting to the flexible pipe traction device, and the other end is provided with a retaining ring that stops the traction device joint 108 to prevent the traction device joint 108 from falling off from the rear. A sealing convex ring 109 is provided on the end face where the traction device joint 108 is connected to the flexible pipe connector 105, and a retaining flange that cooperates with the retaining ring is also provided.

[0026] Based on the above main concept, different embodiments are provided below to illustrate the present utility model.

[0027] In Embodiment 1, with the help of Figures 1 - 4 As shown, this embodiment mainly focuses on the specific introduction of the conical cover. The conical cover 104 of this device can be a pyramidal cover or a conical cover. A towing head 101 for connecting with the towing device is provided at the small-diameter end of the conical cover 104. A flexible pipe connector 105 is arranged inside the conical cover 104. The conical cover 104 has a part that extends backward to the flexible pipe joint of the flexible pipe connector 105, and this part forms an umbrella cover 113.

[0028] In Embodiment 2, with the help of Figure 1 、 Figure 3 、 Figure 4 As shown, this embodiment mainly focuses on the specific introduction of the flexible pipe connector. The front end of the flexible pipe connector 105 of this device extends into the conical cover 104 and is fixedly and sealedly connected to the conical cover 104 or is integrally formed with the conical cover 104. A flexible pipe joint 114 for connecting with a flexible pipe is provided at the rear end of the flexible pipe connector 105. In one embodiment, for a stable connection with the flexible pipe, the flexible pipe joint 114 is an external thread joint that mates with the internal thread on the flexible pipe towing device. To facilitate the installation of the sealing ring 107, a sealing ring groove 110 that mates with the sealing convex ring 109 is also provided on the flexible pipe joint 114. The sealing convex ring 109 on the towing device joint 108 presses the sealing ring 107 into the sealing ring groove 110 to complete the sealing.

[0029] In one embodiment, the rear end of the flexible pipe joint 114 can be located before the rear end of the umbrella cover 113 or the rear end of the flexible pipe joint 114 is located at the same level as the rear end of the umbrella cover 113. In a better embodiment, as Figure 1 、 Figure 3 、 Figure 4 As shown, to facilitate the connection between the towing device connection structure and the flexible pipe joint 114, the rear end of the flexible pipe joint 114 is located behind the rear end of the umbrella cover 113.

[0030] In one embodiment, the flexible pipe connector can be a solid connection column, and the towing head 101 is fixedly connected to the small-diameter end of the conical cover 104 or is integrally formed with the small-diameter end of the conical cover 104. In another better embodiment, as Figure 1 、 Figure 3 、 Figure 4 As shown, to reduce material loss, the flexible pipe connector 105 is a connecting pipe, and the towing head 101 is installed on the conical cover 104 through the rear end of the flexible pipe connector.

[0031] In Embodiment 3, with the help of Figures 1 - 4As shown, this embodiment mainly focuses on the specific introduction of the towing head 101. In one embodiment, the towing head is fixedly connected to the small-diameter end of the conical cover or is integrated with the small-diameter end of the conical cover. In a better embodiment, as Figures 1 - 4 shown, to prevent excessive torque during towing from damaging the flexible pipe or the flexible pipe towing device, the towing head 101 is rotatably fitted with the conical cover 104.

[0032] In one embodiment, a shoulder 102 is provided at the rear end of the towing head 101 to cooperate with the conical cover 104 in a blocking manner to prevent the towing head 101 from slipping out of the conical cover 104 forward. The towing head 101 is also provided with a gasket 103 to prevent the towing head 101 from withdrawing backward from the conical cover 104, and a gasket stopper is provided at the front side of the gasket 103. In another embodiment, by means of Figures 1 - 4 shown, since the towing head mainly receives a forward force, a shoulder 102 is provided at the rear end of the towing head to cooperate with the conical cover 104 in a blocking manner to prevent the towing head 101 from slipping out of the conical cover 104 forward, and no blocking structure is provided at the front end.

[0033] In one embodiment, an external thread is provided at the front end of the towing head, and the gasket stopper is a nut that is threadedly engaged with the external thread. Alternatively, a pin hole may be provided at the front end of the towing head 101, and the gasket stopper is a retaining pin 112 that is forcibly installed in the pin hole.

[0034] In one embodiment, the towing head is directly installed in the towing head mounting hole at the front end of the conical cover. In a better embodiment, as Figures 1 - 4 shown, to prevent stress concentration from damaging the conical cover 104, an end plate 115 is provided at the front end of the conical cover 104, and the towing head 101 is installed in the towing head mounting hole on the end plate 115, and the shoulder 102 abuts against the end plate 115 to disperse the stress.

[0035] When laying the flexible pipe, first, the connection structure of the flexible pipe towing device is fixedly connected to the flexible pipe towing device by threaded connection. Then, the towing head 101 located at the small-diameter end of the conical cover 104 is connected to the towing equipment to perform the flexible pipe towing work. By towing the conical cover 104, it is convenient for the towing device to cross obstacles. Compared with the prior art, an umbrella cover 113 extends behind the conical cover 104 of this device, and most of the wear during towing occurs at the position of the umbrella cover 113. Even if the umbrella cover 113 is worn and broken, foreign objects cannot enter the flexible pipe to cause blockage.

[0036] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention is subject to the claims. Any equivalent structural changes made by using the description and drawings of the present invention should be included in the protection scope of the present invention by the same token.

Claims

1. A flexible pipe traction device, characterized in that, It includes a conical cover, a towing head is provided at the small-diameter end of the conical cover, the towing head is used to connect with a towing device, a flexible pipe connector is arranged inside the conical cover, the front end of the flexible pipe connector extends into the conical cover and is fixedly and sealingly connected to the conical cover or is integrally formed, a flexible pipe joint for connecting a flexible pipe is provided at the rear end of the flexible pipe connector, and the conical cover has a part extending backward to the flexible pipe joint of the flexible pipe connector, and this part constitutes the umbrella cover of the flexible pipe connector.

2. The flexible tube traction device according to claim 1, characterized in that, The flexible pipe joint is an external thread joint, and a sealing ring groove is provided on the rear end face of the external thread joint.

3. The flexible pipe traction device according to claim 1 or 2, characterized in that, The rear end of the flexible pipe joint is located behind the rear end of the umbrella cover.

4. The flexible pipe traction device according to claim 1 or 2, characterized in that, The flexible pipe connector is a connecting pipe, and the towing head is mounted on the conical cover through the rear end of the flexible pipe connector.

5. The flexible tube traction device according to claim 4, wherein, The towing head is rotatably matched with the conical cover.

6. The flexible tube traction device according to claim 5, characterized in that, A shoulder for blocking and cooperating with the conical cover is provided at the rear end of the towing head, a gasket for preventing the towing head from withdrawing backward from the conical cover is further provided on the towing head, and a gasket blocking member is provided at the front side of the gasket.

7. The flexible pipe traction device according to claim 6, characterized in that, The gasket blocking member is a stop pin provided on the towing head.

8. The flexible pipe traction device according to any one of claims 5-7, characterized in that A end plate is provided at the front end of the conical cover, and the towing head is mounted on the end plate.

9. The flexible pipe traction device according to claim 8, characterized in that, The conical cover is a conical cover.

Images