Pipeline welding anti-deformation device

By sliding the anti-deformation support mechanism connecting the screw and the arc pallet on the inner side wall of the pipeline, the problem of deformation during the pipeline welding is solved, the pipeline is fully supported and precise welding is achieved, and the welding efficiency and product quality are improved.

CN223146462UActive Publication Date: 2025-07-25QINGDAO MCDERMOTT WUCHUAN OFFSHORE ENG CO LTD
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Patent Information

Application Number
CN202422397098.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-30
Publication Date
2025-07-25
Estimated Expiration
2034-09-30

AI Technical Summary

Technical Problem

During the pipeline welding process, the pipeline is prone to deformation, especially special materials such as stainless steel, which makes it difficult to meet the standards after welding and is difficult to correct.

Method used

The anti-deformation support mechanism is adopted, including an annular base and a support structure, and is slidably connected on the inner side wall of the pipe through screws and arc-shaped pallets to provide sufficient support and limit the pipe seats to ensure that the pipe does not deform during welding.

Benefits of technology

It achieves sufficient support during pipeline welding, reduces welding difficulty, ensures accurate welding of pipe seats, and improves welding efficiency and product qualification rate.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an anti-deformation device for pipeline welding. The anti-deformation device comprises an anti-deformation supporting mechanism which is supported on the inner side wall of a pipeline in the welding process. The anti-deformation supporting mechanism comprises an annular base, a plurality of annularly-distributed supporting structures are assembled and connected to the annular base, and in the welding process, the supporting structures are supported on the inner side wall of the pipeline; the supporting structure comprises a screw rod connected to the annular base in a sliding mode, and an arc-shaped supporting plate supported on the inner side wall of the pipeline is connected to the screw rod in a sliding assembling mode. The convex face of the arc-shaped supporting plate abuts against the inner side wall of the pipeline. The inner end of the screw rod is in threaded connection with a blocking nut which is blocked on the inner side of the annular base; a cushion block structure for supporting the arc-shaped supporting plate is assembled and connected to the screw rod; and the screw rod is in threaded connection with a pushing adjusting nut for pushing the arc-shaped supporting plate to move. According to the device, in the pipeline welding process, the pipeline is welded in a supporting mode, and the technical defect of pipeline deformation in the pipeline seat welding process of the pipeline is effectively overcome.
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Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline welding, and particularly relates to a pipeline welding anti-deformation device. Background Art

[0002] During the construction of process pipelines, there are sometimes pipe seats designed at the same cross-section position of the pipeline, and the pipe seats need to be welded to the pipeline. During the welding process, first, the pipe seats need to be positioned, and second, the pipeline needs to remain unchanged in shape before and after welding.

[0003] However, during the actual welding process, due to the stress of the pipeline after welding, the pipeline is prone to deformation after welding, especially for special materials such as stainless steel, and the deformation tendency will be more obvious. And the deformation of the pipeline after welding causes the pipeline to fail to meet the standards. Therefore, during the actual work process, once the pipeline is deformed during welding, the pipeline needs to be corrected.

[0004] Moreover, it is very difficult to correct the shape of a pipeline with a cylindrical structure, and it is difficult to ensure that it is corrected to a precise shape. Therefore, during the actual welding process, in order to prevent the pipeline from deforming, the pipeline needs to be supported from the inside. However, it is not only difficult to fully support a cylindrical pipeline, but also once the support is insufficient, the pipeline is more likely to be deformed due to uneven stress during welding.

[0005] Therefore, in the process of welding pipe seats for pipeline pipelines, how to support the pipeline from the inside and keep the pipeline unchanged in shape during the welding process is very important for improving the welding efficiency, effect and the qualified rate of welding products. Summary of the Utility Model

[0006] Based on the above background, the purpose of the utility model is to provide a pipeline welding anti-deformation device.

[0007] To achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A pipeline welding anti-deformation device includes an anti-deformation support mechanism that supports on the inner side wall of the pipeline during welding;

[0009] The anti-deformation support mechanism includes an annular base, and a number of annularly distributed support structures are assembled and connected to the annular base. During welding, the support structures support on the inner side wall of the pipeline;

[0010] The support structure includes a screw rod slidably connected to the annular base, and an arc-shaped support plate that is slidably assembled and supported on the inner side wall of the pipeline is connected to the screw rod; the convex surface of the arc-shaped support plate abuts against the inner side wall of the pipeline;

[0011] During welding, the screw rod passes through the pipe seat on the pipeline and is assembled to the annular base;

[0012] The inner end of the screw rod is threadedly connected with a partition nut that partitions the inner side of the annular base;

[0013] A cushion block structure for supporting the arc-shaped support plate is assembled and connected to the screw rod;

[0014] A pushing adjustment nut for pushing the arc-shaped support plate to move is threadedly connected to the screw rod.

[0015] Preferably, three support structures distributed in an annular array are assembled and connected to the annular base.

[0016] Preferably, the cushion block structure includes a block that is slidably connected to the screw rod, and the pushing adjustment nut is supported at the bottom of the block.

[0017] Preferably, the cushion block structure further includes a plurality of support blocks fixedly connected to the arc-shaped support plate, and the support blocks are fixedly connected to the concave position of the arc-shaped support plate;

[0018] The support blocks are supported at the top of the block.

[0019] Preferably, the shape of the block is U-shaped, and the U-shaped opening of the block is slidably connected to the screw rod.

[0020] Preferably, two support blocks are fixedly connected to the arc-shaped support plate at intervals left and right, and the screw rod passes through the gap between the support blocks.

[0021] Preferably, a hexagonal head is integrally formed at the outer end of the screw rod.

[0022] Preferably, the width of the U-shaped opening is greater than the diameter of the screw rod

[0023] The utility model has the following beneficial effects:

[0024] During the pipeline welding process, first, the inner side wall of the pipeline is in a fully supported state, thus solving the defect that the pipeline is prone to deformation during the welding process. Second, since the screw rod passes through the pipe seat position on the pipeline during the welding process, the thread plays a role in limiting the pipe seat, and thus it is possible to position the pipe seat appropriately during the welding process, reducing the positioning difficulty of the pipe seat during the welding process, further reducing the welding difficulty, and ensuring that the pipe seat can be accurately welded. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model, and for those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0026] Figure 1 is a schematic diagram of the overall structure in an embodiment of the present utility model;

[0027] Figure 2 is a schematic diagram of the anti-deformation support mechanism in an embodiment of the present utility model;

[0028] Figure 3 is a schematic diagram of the support structure in an embodiment of the present utility model;

[0029] Figure 4 in an embodiment of the present utility model Figure 1 front view;

[0030] Figure 5 in an embodiment of the present utility model Figure 1 schematic diagram of the structure from another perspective.

[0031] The realization of the object, functional characteristics and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific Embodiments

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0033] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0034] In addition, the descriptions such as "first" and "second" in the present utility model are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0035] As Figure 1-5 shown, a pipeline welding anti-deformation device includes being supported during welding in the structural schematicFigure 1 The anti-deformation support mechanism 2 on the inner wall.

[0036] Schematic diagram of the structure realized by the anti-deformation support mechanism 2 Figure 1 During the welding process, the pipeline 1 is supported by the anti-deformation support mechanism 2, thereby avoiding the defect of deformation of the pipeline 1 during the welding process.

[0037] Specifically, the anti-deformation support mechanism 2 includes an annular base 21 (during welding, it is pushed into the cavity of the pipeline 1 corresponding to the welding position). A number of annularly distributed support structures are assembled and connected on the annular base 21 (specifically, three annularly arrayed support structures are assembled and connected on the annular base 21). During the welding process, the support structures support on the inner side wall of the pipeline 1. And three pipe seats 11 are welded on the pipeline 1 during the welding process, and the pipeline 1 with three pipe seats 11 is processed.

[0038] Specifically, the support structure includes a screw rod 22 slidably connected to the annular base 21. An arc-shaped support plate 23 that supports on the inner side wall of the pipeline 1 is slidably assembled and connected on the screw rod 22; the convex surface of the arc-shaped support plate 23 abuts against the inner side wall of the pipeline 1. The convex surface of the arc-shaped support plate 23 is adapted to the deformation of the pipeline 1, so that during the welding process, the convex surface of the arc-shaped support plate 23 supports the wall of the pipeline 1 without dead angles, thereby ensuring that the pipeline 1 does not deform during the welding process.

[0039] Specifically, a blocking nut 221 that blocks inside the annular base 21 is threadedly connected to the inner end of the screw rod 22. At the same time, a cushion block structure for supporting the arc-shaped support plate 23 is assembled and connected on the screw rod 22.

[0040] The specific structure of the cushion block structure is: the cushion block structure includes a block 24 slidably connected to the screw rod 22. A pushing and adjusting nut 222 that supports the bottom position is threadedly connected to the screw rod 22. The shape of the block 24 is U-shaped, the U-shaped opening of the block 24 is slidably connected to the screw rod 22, and the width of the U-shaped opening is greater than the diameter of the screw rod 22.

[0041] And, in order to increase the stability of the support, the above-mentioned cushion block structure further includes two support blocks 231 fixedly connected to the arc-shaped support plate 23. The screw rod 22 passes through the gap between the support blocks 231, and the support blocks 231 are fixedly connected to the concave position of the arc-shaped support plate 23; the support blocks 231 support on the top position of the block 24.

[0042] During the welding process, first, the screw rod 22 passes through the pipe seat 11 on the pipe 1 and is then assembled onto the annular base 21 (specifically, it passes through the through hole at the corresponding position on the annular base 21). Subsequently, the blocking nut 221 is screwed on. The operator turns the pushing and adjusting nut 222. Under the push of the pushing and adjusting nut 222, the cushion block structure pushes the arc-shaped supporting plate 23 to move until it abuts against the inner side wall of the pipe 1 and supports the pipe 1.

[0043] In this way, first, the inner side wall of the pipe 1 is in a fully supported state, thus solving the defect that the pipe 1 is prone to deformation during the welding process. Second, since the screw rod 22 passes through the pipe seat 11 on the pipe 1 during the welding process, the thread plays a role in limiting the pipe seat 11. Thus, during the welding process, the pipe seat 11 can be positioned appropriately, reducing the positioning difficulty of the pipe seat during the welding process, further reducing the welding difficulty, and ensuring that the pipe seat can be accurately welded.

[0044] A hexagonal head is integrally formed at the outer end of the screw rod 22.

[0045] Certainly, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions, or substitutions made by those skilled in the art within the substantial scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A pipeline welding anti-deformation device, characterized in that, It includes an anti-deformation support mechanism that is supported on the inner sidewall of the pipeline during the welding process; The anti-deformation support mechanism includes an annular base, and a number of annularly distributed support structures are assembled and connected to the annular base. During the welding process, the support structures are supported on the inner sidewall of the pipeline; The support structure includes a screw rod slidably connected to the annular base, and an arc-shaped support plate that is slidably assembled and supported on the inner sidewall of the pipeline is connected to the screw rod; the convex surface of the arc-shaped support plate abuts against the inner sidewall of the pipeline; During the welding process, the screw rod passes through the pipe socket on the pipeline and is assembled onto the annular base; A blocking nut that blocks inside the annular base is threadedly connected to the inner end of the screw rod; A cushion block structure that supports the arc-shaped support plate is assembled and connected to the screw rod; A pushing adjustment nut that pushes the arc-shaped support plate to move is threadedly connected to the screw rod.

2. The pipeline welding anti-deformation device according to claim 1, characterized in that Three annularly arrayed support structures are assembled and connected to the annular base.

3. The pipeline welding anti-deformation device according to claim 1, characterized in that, The cushion block structure includes a block slidably connected to the screw rod, and the pushing adjustment nut is supported at the bottom position of the block.

4. The pipeline welding anti-deformation device according to claim 3, wherein The cushion block structure further includes a number of support blocks fixedly connected to the arc-shaped support plate, and the support blocks are fixedly connected to the concave position of the arc-shaped support plate; The support blocks support at the top position of the block.

5. The pipeline welding anti-deformation device according to claim 3, wherein, The shape of the block is U-shaped, and the U-shaped opening of the block is slidably connected to the screw rod.

6. The pipeline welding anti-deformation device according to claim 5, characterized in that, The width of the U-shaped opening is greater than the diameter of the screw rod.

7. The pipeline welding anti-deformation device according to claim 4, characterized in that, Two support blocks are fixedly connected to the arc-shaped support plate and are arranged at intervals left and right, and the screw rod passes through the gap between the support blocks.

8. The pipeline welding anti-deformation device according to claim 1, characterized in that, A hexagonal head is integrally formed at the outer end of the screw rod.