Submarine pipeline expansion bend installation auxiliary device

Abstract

The utility model belongs to the technical field of submarine pipelines, and particularly relates to a submarine pipeline expansion bend installation auxiliary device which comprises a straight pipe body. The sleeves are slidably connected to the two ends of the straight pipe body, the first threaded rods are fixed to the ends, away from each other, of the two sleeves, the fixing rods are welded to the ends, away from the sleeves, of the first threaded rods, and multiple sets of extrusion plates which are annularly arranged at equal intervals are arranged outside the fixing rods. According to the auxiliary device, the fixing assembly is arranged, in the auxiliary device disassembling and assembling process, disassembling and assembling of the submarine pipeline on one side can be completed only by rotating a set of threaded cylinders, multiple sets of bolts do not need to be used for fixed connection, the labor intensity of workers is reduced, the working efficiency is improved, and the working efficiency is improved. Disassembly and assembly are simple, the working efficiency is improved, and the actual use requirement is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of submarine pipelines, and in particular relates to an auxiliary device for installing an expansion bend of a submarine pipeline. Background Art

[0002] The expansion bend of the submarine pipeline is a key component, which plays a vital role in the submarine pipeline system. At present, there are construction errors in the installation of submarine pipelines, that is, the actual position of the submarine pipelines connected on both sides of the expansion bend after installation may deviate from the designed position. Therefore, the expansion bend of the submarine pipeline needs to be calibrated by installing auxiliary devices before underwater installation;

[0003] Upon checking the publication (announcement) number; CN212429971U discloses a new type of submarine pipeline expansion bend installation auxiliary device, and this technology discloses "including a device main body straight pipe section, the two ends of the device main body straight pipe section are symmetrically provided with device end flanges, the outer wall of the device end flange is provided with device end bolts, and the outer wall of the device end bolts is provided with device end nuts. The utility model has the technical effects of the coordination of the device main body straight pipe section, the device end flange, the device end bolts and the device end nuts, and the coordination of the device main body straight pipe section, the device end flange, the device end bolts and the device end nuts. After the auxiliary device is removed, the axes of the submarine pipelines connected on both sides are basically on the same straight line, which improves the controllability of the underwater position of the submarine pipeline before the expansion bend is installed, so that the prefabricated expansion bend can be consistent with the original expansion bend in shape, avoiding the need for recalculation and analysis, shortening the offshore construction period, and reducing the workload of offshore prefabrication of the expansion bend. ";

[0004] When the above design is used, although it avoids the need for recalculation and analysis, shortens the offshore construction period, and reduces the workload of offshore prefabrication of expansion bends, it undoubtedly increases the labor intensity of the staff by installing multiple sets of bolts for fixing, and the disassembly and assembly are more cumbersome, which reduces the work efficiency;

[0005] In order to solve the above problems, the present application proposes an auxiliary device for installing a submarine pipeline expansion bend. Utility Model Content

[0006] To solve the problems raised in the above background technology. The utility model provides a submarine pipeline expansion bend installation auxiliary device, which has the characteristics of only rotating a set of threaded cylinders to complete the disassembly and assembly of one side of the submarine pipeline during the disassembly and assembly of the auxiliary device, without the need for multiple sets of bolts to fix the connection, reducing the labor intensity of the staff, making the disassembly and assembly relatively simple to use, improving work efficiency, and meeting the actual use needs.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an auxiliary device for installing an expansion bend of a submarine pipeline, comprising a straight pipe body, a fixing assembly installed on the straight pipe body, the fixing assembly comprising sleeves slidably connected to the two ends of the straight pipe body, a threaded rod 1 fixed to the ends of the two groups of sleeves away from each other, and a fixing rod welded to the end of the threaded rod 1 away from the sleeve, a plurality of groups of extrusion plates arranged in an annular manner and at equal intervals are arranged on the outside of the fixing rod, the two ends of the extrusion plate are respectively hinged to a symmetrically arranged hinged rod 1 and a hinged rod 3 through a hinge shaft, and the surface of the extrusion plate is close to one side of the hinged rod 3 An articulated rod 2 is hingedly connected through an articulated shaft, and the articulated rod 2 and the articulated rod 3 are symmetrically arranged, and an annular seat 1 is fixed to the side of the surface of the fixed rod close to the multiple groups of articulated rods 1, and the other ends of the multiple groups of articulated rods 1 are hinged to the annular seat 1 through the articulated shaft, and an annular seat 2 is fixed to the side of the surface of the fixed rod close to the multiple groups of articulated rods 2, and the other ends of the multiple groups of articulated rods 2 are hinged to the annular seat 2 through the articulated shaft, and the surface of the threaded rod 1 is threadedly connected to a threaded cylinder, and the surface of the threaded cylinder is rotatably connected to the annular seat 3 through a bearing, and the other ends of the multiple groups of articulated rods 3 are hinged to the annular seat 3 through the articulated shaft.

[0008] As a preferred auxiliary device for installing an expansion bend of a submarine pipeline of the utility model, a fixed plate is fixedly installed at the center of the surface of the straight pipe body, a movable groove adapted to the straight pipe body is opened on the surface of the sleeve, the sleeve and the straight pipe body are slidably connected through the movable groove, and a hexagonal block is fixed on the surface of the threaded tube.

[0009] As a preferred embodiment of the auxiliary device for installing expansion bends of submarine pipelines of the utility model, the outermost side of the extrusion plates is designed in an arc-shaped structure, and the overall outer side of the multiple groups of extrusion plates is designed in a circular structure.

[0010] As a preferred embodiment of the auxiliary device for installing the expansion bend of a submarine pipeline of the utility model, an anti-skid pad is fixed to the arc surface of the extrusion plate.

[0011] As a preferred auxiliary device for installing expansion bends of submarine pipelines of the utility model, two threaded rods are rotatably connected to both sides of the fixed plate through bearings, the two threaded rods are threadedly connected to the sleeve, and two hexagonal blocks are fixed to the surface of the two threaded rods.

[0012] As a preferred embodiment of the auxiliary device for installing the expansion bend of a submarine pipeline of the utility model, a telescopic rod is fixed between the sleeve and the fixing plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] By setting up a fixing component, during the disassembly and assembly of the auxiliary device, the disassembly and assembly of the submarine pipeline on one side can be completed only by rotating a set of threaded barrels, without the need for multiple sets of bolts to fix the connection, thereby reducing the labor intensity of the staff, making the disassembly and assembly relatively simple to use, improving work efficiency, and meeting actual use needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the threaded rod 1 and the fixing rod and other connecting parts in the utility model;

[0018] Figure 3 It is a structural sectional view of the sleeve in the utility model.

[0019] In the figure: 1, straight tube body; 2, fixing assembly; 201, sleeve; 202, threaded rod 1; 203, fixing rod; 204, extrusion plate; 205, hinged rod 1; 206, annular seat 1; 207, hinged rod 2; 208, hinged rod 3; 209, annular seat 2; 210, annular seat 3; 211, threaded tube; 212, hexagonal block 1; 213, anti-skid pad; 214, threaded rod 2; 215, hexagonal block 2; 216, telescopic rod; 217, fixing plate. DETAILED DESCRIPTION

[0020] 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.

[0021] Example 1

[0022] like Figure 1 As shown:

[0023] A submarine pipeline expansion bend installation auxiliary device comprises a straight pipe body 1.

[0024] In this implementation scheme: the existing device {publication (announcement) number}: CN212429971U discloses a novel submarine pipeline expansion bend installation auxiliary device. This application makes further improvements on this existing main body. For details, please refer to the disclosed technology below; in order to solve the technical problems existing in this prior art, as disclosed in the background technology above, "the above-mentioned design, when used, avoids recalculation and analysis, shortens the offshore construction period, and reduces the workload of offshore prefabrication of the expansion bend, but fixes by installing multiple sets of bolts, which undoubtedly increases the labor intensity of the staff, and the disassembly and assembly are more cumbersome, reducing work efficiency". In terms of combined use, this problem is obviously a real problem that exists and is relatively difficult to solve. In view of this, in order to solve this technical problem, a fixing component 2 is added to the application document.

[0025] More specifically:

[0026] like Figure 1-Figure 3 As shown:

[0027] A fixing assembly 2 is installed on the straight tube body 1, and the fixing assembly 2 includes sleeves 201 slidably connected to the two ends of the straight tube body 1, a threaded rod 202 fixed to the ends of the two sets of sleeves 201 away from each other, and a fixing rod 203 welded to the end of the threaded rod 202 away from the sleeve 201. A plurality of groups of extrusion plates 204 arranged in an annular shape and equidistant are arranged on the outside of the fixing rod 203. The two ends of the extrusion plate 204 are respectively hinged with a symmetrically arranged hinged rod 1 205 and a hinged rod 3 208 through a hinge shaft. A hinged rod 207 is hinged on the side of the surface of the extrusion plate 204 close to the hinged rod 3 208 through a hinge shaft. The hinged rod 207 and the hinged rod 3 208 are symmetrically arranged. An annular seat 206 is fixed on the side of the surface of the fixing rod 203 close to the multiple groups of hinged rods 1 205. The other end of the group of articulated rods 1 205 is hinged to the annular seat 1 206 through the articulation axis, the surface of the fixed rod 203 is fixed with an annular seat 209 on one side close to the multiple groups of articulated rods 207, the other end of the multiple groups of articulated rods 207 is hinged to the annular seat 209 through the articulation axis, the surface of the threaded rod 1 202 is threadedly connected to the threaded cylinder 211, the surface of the threaded cylinder 211 is rotatably connected to the annular seat 3 210 through a bearing, the other end of the multiple groups of articulated rods 3 208 is hinged to the annular seat 3 210 through the articulation axis, a fixed plate 217 is fixedly installed at the center of the surface of the straight tube body 1, a movable groove matched with the straight tube body 1 is opened on the surface of the sleeve 201, the sleeve 201 and the straight tube body 1 are slidably connected through this movable groove, and a hexagonal block 1 212 is fixed to the surface of the threaded cylinder 211.

[0028] In this embodiment: the submarine pipeline expansion bend installation auxiliary device, when in use, pushes the sleeve 201 on the straight pipe body 1 to extend, and the sleeve 201 cooperates with the threaded rod 1 202 and the fixing rod 203 to insert the extrusion plate 204 as a whole into the submarine pipeline, and then rotates the hexagonal block 1 212 by a tool, and then rotates the threaded cylinder 211, so that the threaded cylinder 211 moves on the threaded rod 1 202, and while the threaded cylinder 211 moves, the annular seat 3 210 drives the hinged rod 3 208 to fold the angle, and at the same time, the hinged rod 207 and the hinged rod 1 205 are respectively folded on the annular seat 209 and the annular seat 1 206, so as to realize the outward expansion of multiple groups of extrusion plates 204. As the extrusion plates 204 continue to expand, the inner wall of the submarine pipeline is squeezed and fixed. At this time, the center of the submarine pipeline is concentric with the fixing rod 203. Through the above operation, the extrusion plates 20 of another group are 4 is used to squeeze and fix the submarine pipeline. When the auxiliary device is removed, by rotating the threaded barrel 211 in the opposite direction, the extrusion plate 204 can be driven to shrink and separate the extrusion plate 204 from the inner wall of the submarine pipeline under the cooperation of the hinge rod 3 208, the hinge rod 207 and the hinge rod 1 205, and the extrusion plate 204 is driven to separate from the inside of the submarine pipeline by pulling the sleeve 201. When the auxiliary device is removed, the axes of the submarine pipelines on both sides are on the same straight line, and the controllability of the underwater position of the submarine pipeline before the expansion bend is installed is achieved, so that the prefabricated expansion bend can be consistent with the original expansion bend in shape, avoiding recalculation and analysis. Through the above operation, in the process of disassembling and assembling the auxiliary device, only one set of threaded barrels 211 is rotated to complete the disassembly and assembly of the submarine pipeline on one side, without the need to be fixed and connected by multiple sets of bolts, thereby reducing the labor intensity of the staff, making the disassembly and assembly relatively simple to use, improving the work efficiency, and meeting the actual use needs.

[0029] It should be noted that the threaded cylinder 211, the threaded rod 202 and the fixed rod 203 are all concentrically connected.

[0030] Going further;

[0031] In an optional embodiment, the outermost side of the extrusion plate 204 is designed to be an arc-shaped structure, and the entire outer side of the multiple groups of extrusion plates 204 is designed to be a circular structure.

[0032] In this embodiment, since the outer surface of the extrusion plate 204 is designed in an arc-shaped structure, it can fit closely to the inner wall of the submarine pipeline, increase the contact area, and improve the fixing effect.

[0033] Going further;

[0034] In an optional embodiment, an anti-slip pad 213 is fixed to the arcuate surface of the extrusion plate 204 .

[0035] In this embodiment, the anti-skid pad 213 on the squeezing plate 204 can increase the friction force on the inner wall of the submarine pipeline, thereby achieving a better fixing effect.

[0036] Going further;

[0037] In an optional embodiment, threaded rod 214 is rotatably connected to both sides of the fixed plate 217 through bearings, threaded rod 214 and sleeve 201 are threadedly connected, hexagonal block 215 is fixed on the surface of threaded rod 214, and a telescopic rod 216 is fixed between the sleeve 201 and the fixed plate 217.

[0038] In this embodiment: the hexagonal block 215 is rotated to drive the threaded rod 214 to rotate. Since the threaded rod 214 is threadedly connected to the sleeve 201, the sleeve 201 is driven to move. By adjusting the distance between the sleeve 201 and the fixed plate 217, the extrusion plate 204 can be easily moved out of the submarine pipeline, which is more labor-saving. At the same time, the overall length can be adjusted according to actual use requirements to better adapt to the distance between the two groups of submarine pipelines, further improving the use effect of the device. When the sleeve 201 moves, it also drives the telescopic rod 216 to be compressed or stretched. Through the setting of the telescopic rod 216, the sleeve 201 can be effectively prevented from detaching from the straight pipe body 1.

[0039] Working principle and use process of the utility model: When the submarine pipeline expansion bend installation auxiliary device is used, the hexagonal block 215 is rotated to drive the threaded rod 214 to rotate, and the sleeve 201 is extended by the threaded rod 214. The sleeve 201 is inserted into the interior of the submarine pipeline in its entirety under the cooperation of the threaded rod 1 202 and the fixed rod 203. Then, the hexagonal block 1 212 is rotated by a tool to rotate the threaded barrel 211, so that the threaded barrel 211 moves on the threaded rod 1 202. When the threaded barrel 211 moves, the annular seat 3 210 drives the hinged rod 3 208 to fold the angle, and the hinged rod 207 and the hinged rod 1 205 are respectively Angle folding is performed on the annular seat 209 and the annular seat 1 206 to achieve outward expansion of multiple groups of extrusion plates 204. As the extrusion plates 204 continue to expand, the inner wall of the submarine pipeline is squeezed and fixed. At this time, the center of the submarine pipeline is concentric with the fixing rod 203. Through the above operation, another group of extrusion plates 204 is used to squeeze and fix the submarine pipeline. Since the outer surface of the extrusion plate 204 is designed in an arc-shaped structure, it can fit closely to the inner wall of the submarine pipeline, increase the contact area, and improve the fixing effect. At the same time, the anti-skid pad 213 on the extrusion plate 204 can increase the friction of the inner wall of the submarine pipeline, and the fixing effect is better. When the auxiliary device is dismantled, the threaded barrel is rotated in the opposite direction. 211, under the cooperation of the hinged rod three 208, the hinged rod two 207 and the hinged rod one 205, the extrusion plate 204 can be driven to shrink and separate the extrusion plate 204 from the inner wall of the submarine pipeline, and then the hexagonal block two 215 is rotated to drive the threaded rod two 214 to rotate. Since the threaded rod two 214 and the sleeve 201 are threadedly connected, the sleeve 201 is driven to move. By adjusting the distance between the sleeve 201 and the fixed plate 217, the extrusion plate 204 can be driven to move out of the submarine pipeline. At the same time, the overall length can be adjusted according to actual use requirements, so as to better adapt to the distance between the two groups of submarine pipelines, and further improve the use effect of the device. While the sleeve 201 moves, it drives the telescopic rod 21 6 is compressed or stretched. The setting of the telescopic rod 216 can effectively prevent the sleeve 201 from being separated from the straight pipe body 1, further improving the use effect of the device. When the auxiliary device is removed, the axes of the submarine pipelines on both sides are on the same straight line, realizing the controllability of the underwater position of the submarine pipeline before the expansion bend is installed, so that the prefabricated expansion bend can be consistent with the original expansion bend in shape, avoiding recalculation and analysis. Through the above operation, during the disassembly and assembly of the auxiliary device, only one set of threaded cylinders 211 is rotated to complete the disassembly and assembly of the submarine pipeline on one side, without the need for multiple sets of bolts to fix the connection, reducing the labor intensity of the staff, making the disassembly and assembly simpler to use, improving work efficiency, and meeting actual use needs.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A submarine pipeline expansion bend installation auxiliary device, comprising a straight pipe body (1), characterized in that: The straight tube body (1) is provided with a fixing assembly (2), the fixing assembly (2) comprising sleeves (201) slidably connected to the two ends of the straight tube body (1), a threaded rod (202) fixed to the ends of the two sets of sleeves (201) away from each other, and a fixing rod (203) welded to the end of the threaded rod (202) away from the sleeve (201), the fixing rod (203) being provided with a plurality of groups of extrusion plates (204) arranged in an annular shape and at equal intervals, the two ends of the extrusion plates (204) being respectively hinged to symmetrically arranged hinged rods (1) (205) and hinged rods (208) via hinge shafts, the surface of the extrusion plates (204) being close to the hinged rod (208) is hinged to hinged rods (207) via hinge shafts, the hinged rods (207) and hinged rods (207) being connected to the hinged rods (208) The connecting rod three (208) is symmetrically arranged, and an annular seat one (206) is fixed on the surface of the fixed rod (203) on one side close to the multiple groups of hinged rods one (205), and the other ends of the multiple groups of hinged rods one (205) are hinged to the annular seat one (206) through a hinge shaft, and an annular seat two (209) is fixed on the surface of the fixed rod (203) on one side close to the multiple groups of hinged rods two (207), and the other ends of the multiple groups of hinged rods two (207) are hinged to the annular seat two (209) through a hinge shaft, and the surface of the threaded rod one (202) is threadedly connected to a threaded cylinder (211), and the surface of the threaded cylinder (211) is rotatably connected to an annular seat three (210) through a bearing, and the other ends of the multiple groups of hinged rods three (208) are hinged to the annular seat three (210) through a hinge shaft.

2. The auxiliary device for installing a submarine pipeline expansion bend according to claim 1, characterized in that: A fixed plate (217) is fixedly installed at the center of the surface of the straight tube body (1), a movable groove matching the straight tube body (1) is opened on the surface of the sleeve (201), the sleeve (201) and the straight tube body (1) are slidably connected through the movable groove, and a hexagonal block (212) is fixed on the surface of the threaded tube (211).

3. The auxiliary device for installing expansion bends of submarine pipelines according to claim 1, characterized in that: The outermost side of the extrusion plate (204) is designed to be an arc-shaped structure, and the entire outer side of the multiple groups of extrusion plates (204) is designed to be a circular structure.

4. The auxiliary device for installing expansion bends of submarine pipelines according to claim 3 is characterized by: An anti-slip pad (213) is fixed to the arc-shaped surface of the extrusion plate (204).

5. The submarine pipeline expansion bend installation auxiliary device according to claim 2, characterized in that: The two sides of the fixed plate (217) are rotatably connected with threaded rods (214) via bearings. The threaded rods (214) and the sleeve (201) are threadedly connected. The surface of the threaded rods (214) is fixed with hexagonal blocks (215).

6. The auxiliary device for installing expansion bends of submarine pipelines according to claim 5, characterized in that: A telescopic rod (216) is fixed between the sleeve (201) and the fixed plate (217).

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