Oil and gas pipeline crossing pull-back traction protection device

Abstract

The utility model discloses an oil and gas pipeline crossing pull-back traction protection device which comprises a first traction cylinder, a second traction cylinder, a first pull rod, a second pull rod, a second pull rod and a second pull rod, and the diameter of the second pull rod is larger than that of the first pull rod; the clamping devices are radially installed on the second traction cylinder in a penetrating and inserting mode, and the multiple clamping devices are arranged in an annular array mode and used for limiting and clamping the oil and gas pipeline; and the traction device is mounted in the first traction cylinder. The arrangement mode that the second traction cylinder is matched with the clamping devices is utilized, the multiple clamping devices are used for clamping a pipeline, so that the stability of the pipeline in the second traction cylinder is guaranteed, meanwhile, a flange on the pipeline is limited, the pipeline is prevented from being separated from an inner cavity of the second traction cylinder, and the pipeline is prevented from being damaged. The clamping and limiting connection mode cannot cause surface damage to the pipeline and the flange, and the stability of flange connection cannot be affected after traction.

Description

TECHNICAL FIELD

[0001] The utility model relates to a traction protection device field, especially in an oil and gas pipeline crossing back drag traction protection device. BACKGROUND

[0002] At present, when oil and gas pipeline crosses river, concrete sleeve is jacked underground, and then the pipeline conveying oil and gas is inserted into the sleeve. At present, insulation support is mostly used to protect and support oil and gas pipeline, and hoisting machine or crane is used for traction driving and dragging.

[0003] In the prior art, such as patent application No. 202323040438.6, named oil and gas pipeline crossing back drag traction protection device, belongs to long distance pipeline river crossing technical field, including main body, support sleeve, back drag traction protection device, the main body is consistent with the caliber of oil and gas pipeline, one end of the main body is welded between the oil and gas pipeline, the other end of the main body is provided with support sleeve, back drag traction protection device is arranged in the support sleeve. In the process of sending and traction construction of large tonnage traction device steel wire rope in the long distance large river pipe crossing sleeve, the back drag traction protection device is welded to form a firm and reliable traction stress end, the anti-torsion device composed of traction shaft, thrust bearing device and support sleeve effectively fixes the large tonnage traction device steel wire rope to the back drag device, to prevent safety accidents caused by speed out of control and pipeline rotation.

[0004] In the back drag traction of the above-mentioned patent, the main body is consistent with the caliber of oil and gas pipeline, one end of the main body is welded between the oil and gas pipeline, and the back drag traction protection device is welded to form a firm and reliable traction stress end, relying on the anti-torsion device composed of traction shaft, thrust bearing and support sleeve to effectively fix the large tonnage traction device steel wire rope to the back drag device. However, since the connection mode between the main body and the oil and gas pipeline is welding, and welding is carried out at the end of the pipeline, the flange is generally arranged at the end of the pipeline for connection with other pipelines or devices, which makes the main body in the above-mentioned patent welded with the flange at the end during welding, and the welding process will leave welding marks such as welds and weld bumps on the surface of the flange. These marks will damage the original appearance of the workpiece, making the surface uneven, which may affect the sealing effect of the flange connection. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an oil and gas pipeline crossing back drag traction protection device to solve the problems in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an oil and gas pipeline crossing back drag traction protection device, comprising:

[0007] The first traction cylinder is fixedly installed with a second traction cylinder at one end, and the diameter of the second traction cylinder is larger than that of the first traction cylinder;

[0008] The clamping device is radially installed on the second traction cylinder, and a plurality of clamping devices are arranged in an annular array, and the clamping device is used for limiting and clamping the oil and gas pipeline;

[0009] The traction device is installed inside the first traction cylinder.

[0010] Preferably, the traction device comprises:

[0011] The fixed cylinder is arranged inside the first traction cylinder;

[0012] The rotating shaft is rotatably connected to the fixed cylinder through the bearing installed inside the fixed cylinder.

[0013] The traction shaft is detachably installed at the end of the rotating shaft through the bolt.

[0014] Preferably, the outer wall of the fixed cylinder is arranged with a plurality of support plates in an annular array, the support plates are fixedly installed inside the first traction cylinder, and one side of the support plate is connected with a support protrusion.

[0015] Preferably, the clamping device comprises:

[0016] The first threaded rod is threadedly and penetratingly connected with the second traction cylinder;

[0017] The extrusion plate is rotatably connected to one end of the first threaded rod, and the extrusion plate is in an inwardly bent arc shape.

[0018] The limiting rod is fixedly connected to one end of the extrusion plate, and the limiting rod is slidingly and penetratingly connected with the second traction cylinder.

[0019] Preferably, the inner side wall of the extrusion plate is fixedly installed with a plurality of anti-skid strips.

[0020] Preferably, a plurality of adjustable rolling devices are radially and penetratingly installed on the first traction cylinder and the second traction cylinder, and the plurality of adjustable rolling devices are arranged in an annular array.

[0021] Preferably, the adjustable rolling device comprises:

[0022] The second threaded rod is slidingly and penetratingly connected with the first traction cylinder or the second traction cylinder;

[0023] The fastening nut is threadedly sleeved on the outside of the second threaded rod;

[0024] A support is connected to the end of the second threaded rod.

[0025] A roller is rotatably arranged inside the support.

[0026] The present application has the following technical effects and advantages:

[0027] The second traction cylinder and the clamping device are matched and arranged, the end of the oil and gas pipeline is inserted into the second traction cylinder, then the clamping device is rotated, the pipeline is clamped by the clamping device, the flange on the pipeline is limited, the pipeline is prevented from separating from the inner cavity of the second traction cylinder, the clamping and limiting connection mode does not cause surface damage to the pipeline and the flange, and after traction, the stability of the flange connection is not affected. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0029] Figure 2 It is a schematic diagram of the internal structure of the present application.

[0030] Figure 3 It is a schematic diagram of the structure of the clamping device of the present application.

[0031] Figure 4 It is a schematic diagram of the structure of the adjustable rolling device of the present application.

[0032] In the figure: 1, first traction cylinder; 2, second traction cylinder; 3, clamping device; 31, first threaded rod; 32, extrusion plate; 321, anti-skid strip; 33, limiting rod; 4, traction device; 41, fixed cylinder; 42, rotating shaft; 43, traction shaft; 5, supporting protrusion; 6, adjustable rolling device; 61, second threaded rod; 62, fastening nut; 63, support; 64, roller. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0034] The present application provides a Figures 1-4The oil and gas pipeline crossing back-dragging traction protection device shown comprises: a first traction cylinder 1, a second traction cylinder 2 is fixedly installed at one end of the first traction cylinder 1, and the diameter of the second traction cylinder 2 is greater than that of the first traction cylinder 1; the second traction cylinder 2 is arranged to facilitate the storage of the clamping device 3, so that when the pressing plate 32 is tightly attached to the inner wall of the second traction cylinder 2, the clamping device 3 is prevented from protruding inward and affecting the insertion of the pipeline into the interior of the second traction cylinder 2; the clamping device 3 is radially inserted and installed on the second traction cylinder 2, and a plurality of clamping devices 3 are arranged in a ring array, and the clamping device 3 is used for limiting and clamping the oil and gas pipeline; the traction device 4 is installed in the interior of the first traction cylinder 1.

[0035] The traction device 4 comprises: a fixed cylinder 41 arranged in the interior of the first traction cylinder 1; a rotating shaft 42 rotatably connected to the fixed cylinder 41 through a bearing arranged in the interior of the fixed cylinder 41; and a traction shaft 43 detachably installed at the end of the rotating shaft 42 through bolts. The outer wall of the fixed cylinder 41 is arranged in a ring array with a support plate fixedly installed in the interior of the first traction cylinder 1, and the support plate is connected with a support protrusion 5 on one side. The cooperation between the support protrusion 5 and the clamping device 3 facilitates the limiting of the flange between them, prevents the pipeline from being separated from the second traction cylinder 2, and facilitates the limiting of the flange to prevent the pipeline from shaking greatly in the interior of the second traction cylinder 2. The relative position between the first traction cylinder 1 and the fixed cylinder 41 is connected and fixed through the support plate to realize the installation of the fixed cylinder 41. The rotating shaft 42 is rotatably connected to the fixed cylinder 41 through the bearing arranged in the interior of the fixed cylinder 41, so that the rotating shaft 42 can be rotatably connected to the fixed cylinder 41 through the bearing to prevent the pipeline from rotating during traction. The detachable connection between the rotating shaft 42 and the traction shaft 43 enables the replacement of the traction shaft 43 after a long time of use and wear of the traction shaft 43, thereby ensuring the service life of the whole device. Embodiment

[0036] Specifically, the clamping device 3 comprises: a first threaded rod 31, the first threaded rod 31 is threadedly inserted into the second traction cylinder 2; a pressing plate 32, the pressing plate 32 is rotatably connected to one end of the first threaded rod 31, and the pressing plate 32 is inwardly bent and arc-shaped; a limiting rod 33, one end of the limiting rod 33 is fixedly connected with the pressing plate 32, and the limiting rod 33 is slidably inserted into the second traction cylinder 2. A plurality of anti-skid strips 321 are fixedly installed on the inner side wall of the pressing plate 32, the other end of the first threaded rod 31 is fixedly connected with a handle, by rotating the first threaded rod 31, cooperating with the threaded insertion between the first threaded rod 31 and the second traction cylinder 2, so that the rotation of the first threaded rod 31 can push the pressing plate 32, and then the pressing plate 32 can clamp and fix the pipeline, by the adhesion of the anti-skid strips 321 and the outer wall of the pipeline, reducing friction, also having an anti-skid function, further ensuring the stability of the adhesion, by the arc-shaped arrangement of the pressing plate 32, the outer wall of the pipeline can be conveniently clamped, by the sliding insertion between the limiting rod 33 and the second traction cylinder 2, the linear movement of the pressing plate 32 can be conveniently limited, and the radial movement of the pressing plate 32 relative to the pipeline is more stable. Embodiment

[0037] On the basis of embodiment 1, a plurality of adjustable rolling devices 6 are radially and insertedly installed on the first traction cylinder 1 and the second traction cylinder 2, and the plurality of adjustable rolling devices 6 are arranged in an annular array. Specifically, the adjustable rolling device 6 comprises: a second threaded rod 61, the second threaded rod 61 is slidably inserted into the first traction cylinder 1 or the second traction cylinder 2; a fastening nut 62, the fastening nut 62 is threadedly sleeved on the outside of the second threaded rod 61; a bracket 63, the bracket 63 is connected to the end of the second threaded rod 61; a roller 64, the roller 64 is rotatably arranged in the inside of the bracket 63, the installation and support of the roller 64 are facilitated by the bracket 63, the relative position between the bracket 63 and the second traction cylinder 2 is adjusted by the sliding insertion between the second threaded rod 61 and the second traction cylinder 2, so as to adapt to the rolling support of various pipelines, the position of the second threaded rod 61 relative to the first traction cylinder 1 and the second traction cylinder 2 is fixed by relatively tightening the two fastening nuts 62 on the second threaded rod 61, so that the position of the adjusted second threaded rod 61 is more stable.

[0038] Finally, it should be noted that: the above is only the preferred embodiment of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A protection device for the back-pulling of oil and gas pipelines, characterized in that, include: A first traction cylinder (1) is fixedly installed at one end of the first traction cylinder (1) with a second traction cylinder (2) and the diameter of the second traction cylinder (2) is larger than the diameter of the first traction cylinder (1); Clamping device (3), the clamping device (3) is radially inserted into the second traction cylinder (2), and multiple clamping devices (3) are arranged in a ring array. The clamping device (3) is used to limit and clamp the oil and gas pipeline. The traction device (4) is installed inside the first traction cylinder (1).

2. The oil and gas pipeline crossing and back-pulling protection device according to claim 1, characterized in that, The traction device (4) includes: A fixed cylinder (41) is disposed inside the first traction cylinder (1); The rotating shaft (42) is rotatably connected to the fixed cylinder (41) through the bearing. The traction shaft (43) is detachably mounted to the end of the rotating shaft (42) by bolts.

3. The oil and gas pipeline crossing and back-pulling protection device according to claim 2, characterized in that, The outer wall of the fixed cylinder (41) is equipped with a support plate in a ring array. The support plate is fixedly installed inside the first traction cylinder (1). A support protrusion (5) is connected to one side of the support plate.

4. The oil and gas pipeline crossing and back-pulling protection device according to claim 1, characterized in that, The clamping device (3) includes: The first threaded rod (31) is threadedly connected to the second traction cylinder (2); The extrusion plate (32) is rotatably connected to one end of the first threaded rod (31), and the extrusion plate (32) is in an inwardly bent arc shape; The limiting rod (33) is fixedly connected at one end to the extrusion plate (32), and the limiting rod (33) is slidably inserted into the second traction cylinder (2).

5. The oil and gas pipeline crossing and back-pulling protection device according to claim 4, characterized in that, Multiple anti-slip strips (321) are fixedly installed on the inner side wall of the extrusion plate (32).

6. The oil and gas pipeline crossing and back-pulling protection device according to claim 1, characterized in that, Multiple adjustable rolling devices (6) are radially inserted on both the first traction cylinder (1) and the second traction cylinder (2), and the multiple adjustable rolling devices (6) are arranged in a ring array.

7. The oil and gas pipeline crossing and back-pulling protection device according to claim 6, characterized in that, The adjustable rolling device (6) includes: The second threaded rod (61) is slidably inserted into the first traction cylinder (1) or the second traction cylinder (2); A fastening nut (62) is threaded onto the outside of the second threaded rod (61); A bracket (63) is connected to the end of a second threaded rod (61); Roller (64), which is rotatably disposed inside the bracket (63).

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