Traction clamp special for flexible composite pipeline

Abstract

The utility model relates to the technical field of pipeline traction clamps, and discloses a traction clamp special for a flexible composite pipeline, the traction clamp is matched with the flexible composite pipeline for use, and the traction clamp comprises a traction nut, a bearing shaft, a tightening piece, a spacer block, a sub-clamping table, an expansion clamping jaw, an expansion clamping table and a locking sleeve outside the pipeline, and the expansion clamping jaw is arranged in one end of the flexible composite pipeline. According to the utility model, the expansion clamping jaw can be adjusted to expand outwards by controlling the tightening piece, so that the expansion clamping jaw is tightly attached to the inner wall of the composite pipe, and at the moment, because the flexible composite pipe has the characteristic of flexibility and is easy to deform, the pre-installed outside-pipe locking sleeve plays a good protection role, and after the pipe is expanded, the expansion clamping jaw can be tightly attached to the inner wall of the composite pipe. The steel wire rope penetrates through the traction nut at the front end of the device to be connected with a traction machine, traction operation can be rapidly conducted, and the device is small in size, simple in structure, easy to operate and install, capable of conveniently conducting traction operation on a flexible pipeline, not prone to damaging a pipe body and suitable for application and popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline traction clamps, in particular to a traction clamp dedicated to a flexible composite pipeline. Background Art

[0002] Flexible composite pipe is also called flexible pipe, composite pipe, flexible pipe, rtp, flexiblepipe, etc. At present, this kind of pipe is widely used in the field of oil and gas extraction and oil and gas transportation on land and sea, and is also one of the most economical and reliable pipeline products. Usually, the traditional flexible composite pipe adopts a composite structure, which is composed of reinforced materials and extruded materials. Its main structure is more than three functional layer structures, among which the inner pipe layer is mainly used to manufacture the medium transport layer of the flexible composite pipe (commonly known as the inner pipe layer), the middle functional layer provides mechanical strength, and the outer protective layer provides the protection function of isolating the environment.

[0003] When the high molecular weight polyethylene material is heated and extruded into the inner tube layer, due to its flexible characteristics, it needs to be pulled to the wrapping area of ​​the coating layer with the help of external force. If this step is carried out by the extruder itself, it often gets stuck on the dredging line, which is inefficient and has a high error rate.

[0004] This patent discloses a flexible composite pipe expansion and traction device, which solves the traction problem of the medium transport layer (commonly known as the inner pipe layer) of the flexible composite pipe. The inner wall of the pipe is expanded by the clamping claws, and the outer wall of the pipe is protected from deformation due to internal expansion by a locking sleeve outside the pipe. The front end is connected to the traction device through a traction machine, which can well avoid the above problems. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the utility model provides a traction clamp specially used for flexible composite pipes, which has the advantages of small size, simple structure, easy operation and installation, convenient traction operation for flexible pipes, not easy to damage the pipe body, and suitable for popularization and use. It solves the problems that the existing flexible pipes are easy to get on the dredging line, have low efficiency and high error rate, and are inconvenient to traction, thus affecting production efficiency.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose of small size, simple structure, easy operation and installation, convenient for pulling operation of flexible pipes, not easy to damage the pipe body, and suitable for popularization and use, the utility model provides the following technical solutions: a pulling clamp dedicated to flexible composite pipes, the pulling clamp is used in conjunction with the flexible composite pipe, and the pulling clamp includes a pulling nut, a load-bearing shaft, a clamping piece, a spacer, a clamping table, an expansion clamping claw, an expansion clamping table, and a locking sleeve outside the pipe;

[0009] The expansion clamp is arranged inside one end of the flexible composite pipe, the outer tube locking sleeve is installed outside the flexible composite pipe, and is locked by changing the position of the clamp on the load-bearing shaft. The spacer and the clamping platform enable the clamp to be evenly distributed on the inner wall of the pipe, and the external traction machine is connected to the traction nut through a wire rope.

[0010] The traction nut is arranged at one end of the load-bearing shaft, and the clamping member, the spacer, the clamping platform, the expansion clamping claw and the expansion clamping platform are all installed on the traction nut.

[0011] Preferably, the six expansion clamps are evenly distributed on the clamping table through six spacers, and the six spacers are all made of hard solid resin material.

[0012] Preferably, the expansion clamp is a solid body, the tail end is protruding and bulging outward, the top end is a slot, and the overall shape is a cone in the longitudinal direction.

[0013] Preferably, the expansion clamping table is a conical solid body with a hole reserved in the middle so that it can better cooperate with the middle shaft body part, and when it is locked to the tail by the tightening hoop, it plays an internal support role.

[0014] Preferably, the clamping member is a locking nut, which is used in conjunction with a reserved thread on the shaft and is tightly attached to the clamping platform during use.

[0015] Preferably, the load-bearing shaft is a solid cylindrical body, is tapped at the top and the tail, and is used in conjunction with a clamp and a traction nut.

[0016] Preferably, the traction nut has a structure in which a solid ring is welded on the nut, and the solid ring is used to fix the traction rope.

[0017] Preferably, the outer locking sleeve of the pipe is in an arc shape, and the flexible composite pipe is fixed and locked by a nut on the locking sleeve.

[0018] Preferably, the clamping platform fixes a spacer block, which is inverted on the platform in a stepped shape, and the expansion clamping claws are evenly distributed between two adjacent spacers.

[0019] Preferably, the expansion clamping table is conical in shape, so as to facilitate the use with the expansion clamping jaws.

[0020] (III) Beneficial effects

[0021] Compared with the prior art, the utility model provides a traction clamp dedicated to a flexible composite pipe, which has the following beneficial effects:

[0022] 1. The pipeline is well protected during traction. After the device is pulled to a fixed position, it does not affect the pipeline performance, and the next process can be carried out simultaneously.

[0023] 2. After the device is assembled, the traction machine and the device are connected by a steel wire rope. The clamping device of the utility model has a small size, high flexibility in use, and a wide range of applications.

[0024] 3. The utility model has a simple structure, is easy to install, and is stable, and has great use and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a frontal perspective schematic diagram of the structure of the utility model;

[0026] Figure 2 This is a bottom-up stereoscopic schematic diagram of the structure of the utility model;

[0027] Figure 3 It is a side perspective schematic diagram of the structure of the utility model;

[0028] Figure 4 It is a frontal perspective schematic diagram of the outer tube locking sleeve structure of the utility model.

[0029] In the figure: 1. traction nut; 2. load-bearing shaft; 3. clamping piece; 4. spacer; 5. clamping platform; 6. expansion clamping claw; 7. expansion clamping platform; 8. locking sleeve outside the pipe. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-Figure 4 A traction clamp dedicated to a flexible composite pipe, the traction clamp is used in conjunction with the flexible composite pipe, and the traction clamp includes a traction nut 1, a load-bearing shaft 2, a clamping member 3, a spacer 4, a clamping platform 5, an expansion clamping claw 6, an expansion clamping platform 7, and a pipe outer locking sleeve 8;

[0032] The expansion clamp 6 is arranged inside one end of the flexible composite pipe, the outer locking sleeve 8 is installed outside the flexible composite pipe, and the clamping member 3 is locked by changing its position on the bearing shaft 2. The spacer 4 and the clamping platform 5 enable the clamp to be evenly distributed on the inner wall of the pipe, and the external traction machine is connected to the traction nut 1 through a steel wire rope;

[0033] The traction nut 1 is arranged at one end of the bearing shaft 2, and the clamping member 3, the spacer block 4, the clamping platform 5, the expansion clamping claw 6 and the expansion clamping platform 7 are all installed on the traction nut 1;

[0034] The beneficial effects to be expressed by this scheme are as follows: by providing a traction nut 1 on the load-bearing shaft 2, a steel wire rope can be externally connected. When in use, the outer tube locking sleeve 8 is first tightly installed on the end of the pipe that needs to be towed, and the expansion jaws 6 can be adjusted to expand outward by controlling the tightening member 3 to make it close to the inner wall of the composite pipe. At this time, due to the flexible characteristics of the flexible composite pipe, it is easy to deform, and the pre-installed outer tube locking sleeve 8 plays a good protective role. After the pipe is expanded, the steel wire rope can be passed through the traction nut 1 at the front end of the device to connect with the traction machine, and the traction operation can be carried out quickly, so that the device is small in size, simple in structure, easy to operate and install, convenient for traction operation of flexible pipes, not easy to damage the pipe body, and suitable for popularization and use.

[0035] Furthermore, the six expansion clamping jaws 6 are evenly distributed on the clamping platform 5 through six spacers 4, and the six spacers 4 are all made of hard solid resin material.

[0036] Furthermore, the expansion clamping claw 6 is a solid body, the tail end of which is protruding and expanding outwards, the top end of which is a clamping groove, and the overall shape is a cone shape in the longitudinal direction.

[0037] Furthermore, the expansion clamping table 7 is a conical solid body, and a hole is reserved in the middle so that it can better cooperate with the middle shaft body part, and when it is locked to the tail by the clamping member 3, it plays an internal support role.

[0038] Furthermore, the clamping member 3 is a locking nut, which is used in conjunction with the reserved thread on the shaft and is tightly attached to the clamping platform 5 during use.

[0039] Furthermore, the load-bearing shaft 2 is a solid cylindrical body, is tapped at the top and the tail, and is used in conjunction with the clamp 3 and the traction nut 1 .

[0040] Furthermore, the traction nut 1 has a structure in which a solid ring is welded on the nut, and the solid ring is used to fix the traction rope.

[0041] Furthermore, the locking sleeve 8 outside the pipe is in an arc shape, and the flexible composite pipe is fixed and locked by a nut on the locking sleeve.

[0042] Furthermore, the clamping platform 5 fixes the spacer 4 , which is inverted on the platform in a stepped shape, and the expansion clamping claws 6 are evenly distributed between two adjacent spacer blocks 4 .

[0043] Furthermore, the expansion clamping platform 7 is conical in shape, so as to facilitate the use with the expansion clamping jaws 6 .

[0044] It should be noted that the various devices in this application are common devices in the market, and can be selected according to specific needs during specific use. The circuit connection relationship of each device belongs to a simple series and parallel connection circuit. There is no innovation in the circuit connection. Those skilled in the art can easily implement it. It belongs to the existing technology and will not be elaborated.

[0045] Working principle: The outer tube locking sleeve 8 is first fixed to one end of the pipe to be pulled, and then the inner expansion device is installed inside the pipe through the nut locking device on it. The expansion clamp 6 is expanded outward by adjusting the clamp 3. At this time, due to the flexible characteristics of the flexible composite pipe, it is easy to deform, and the pre-installed outer tube locking sleeve 8 plays a good protective role. After the expansion device, the wire rope passes through the traction nut 1 at the front end of the device and is connected to the traction machine. The traction work is completed by setting the traction machine speed to match the extrusion speed of the pipe extruder;

[0046] When in use, first install the outer locking sleeve 8 on the end of the pipe that needs to be pulled, then place the pulling clamp in the pipe, and lock the device through the clamp 3 to make it close to the inner wall of the composite pipe. The pulling machine pulls the flexible composite pipe through the wire rope; after the composite pipe is pulled to a fixed position, the device is removed, and the pipe does not affect the continued work of the next process;

[0047] The locking device of the device has a locking nut at the upper end, which is fixed by the clamp 3 after the device is installed, which can effectively solve the problem of the device loosening due to the traction force during the traction process.

[0048] In the flexible composite pipe, the device evenly separates the six expansion jaws 6 through six spacers 4, so that the inner wall of the pipe will not be damaged due to stress concentration during the expansion process, thereby affecting the next step and causing waste of resources. The external outer pipe locking sleeve 8 also plays a certain protective role. In this way, no matter how the wall thickness of the produced pipe changes, the device can be applied. The clamp of the utility model has a simple structure, is easy to operate, saves costs, is highly practical, and has a strong value of use and promotion.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A traction clamp dedicated to a flexible composite pipe, the traction clamp is used in conjunction with a flexible composite pipe, characterized in that: The traction clamp comprises a traction nut (1), a bearing shaft (2), a clamping member (3), a spacer (4), a clamping platform (5), an expansion clamping claw (6), an expansion clamping platform (7), and an outer tube locking sleeve (8); The expansion clamp (6) is arranged inside one end of the flexible composite pipe, the outer tube locking sleeve (8) is installed outside the flexible composite pipe, and is locked by changing the position of the clamp (3) on the bearing shaft (2). The spacer (4) and the clamping platform (5) enable the clamp to be evenly distributed on the inner wall of the pipe, and the external traction machine is connected to the traction nut (1) via a steel wire rope; The traction nut (1) is arranged at one end of the bearing shaft (2), and the clamping member (3), the spacer (4), the clamping platform (5), the expansion clamping claw (6) and the expansion clamping platform (7) are all installed on the traction nut (1).

2. A traction clamp for flexible composite pipes according to claim 1, characterized in that: The six expansion clamping claws (6) are evenly distributed on the clamping platform (5) through six spacers (4), and the six spacers (4) are all made of hard solid resin material.

3. The traction clamp for flexible composite pipe according to claim 1, characterized in that: The expansion clamping claw (6) is a solid body, the tail end of which is protruding and expanding outwards, the top end of which is a clamping groove, and the overall shape is a conical shape in the longitudinal direction.

4. The traction clamp for flexible composite pipe according to claim 1, characterized in that: The expansion clamping platform (7) is a conical solid body with a hole reserved in the middle so that it can better cooperate with the middle shaft body part, and plays an internal supporting role when it is locked to the tail through the clamping member (3).

5. The traction clamp for flexible composite pipe according to claim 1, characterized in that: The clamping member (3) is a locking nut, which is used in conjunction with the reserved thread on the shaft and is tightly attached to the clamping platform (5) during use.

6. The traction clamp for flexible composite pipe according to claim 1, characterized in that: The load-bearing shaft (2) is a solid cylindrical body, is threaded at the top and the tail, and is used in conjunction with the clamp (3) and the traction nut (1).

7. The traction clamp for flexible composite pipe according to claim 1, characterized in that: The traction nut (1) has a structure in which a solid ring is welded on the nut, and the solid ring is used to fix the traction rope.

8. The traction clamp for flexible composite pipe according to claim 1, characterized in that: The outer locking sleeve (8) of the pipe is in an arc shape and is used to fix and lock the flexible composite pipe through a nut on the locking sleeve.

9. The traction clamp for flexible composite pipe according to claim 1, characterized in that: The clamping platform (5) fixes the spacer (4), which is inverted on the platform in a stepped manner, and the expansion clamping claws (6) are evenly distributed between two adjacent spacer blocks (4).

10. The traction clamp for flexible composite pipe according to claim 1, characterized in that: The expansion clamping platform (7) is conical in shape and is used to facilitate the use with the expansion clamping claw (6).

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