A clamping device for pressure pipeline girth weld detection

Abstract

The application discloses a clamping device for pressure pipeline girth weld detection, and belongs to the pressure pipeline girth weld detection field.The clamping device for pressure pipeline girth weld detection comprises a clamping mechanism and a C-shaped support for supporting the clamping mechanism, the clamping mechanism comprises four roller assembly groups arranged on a roof and a base of the C-shaped support respectively for respectively contacting a top and a bottom of a pipeline, and a driving assembly fixedly arranged on the roof for driving a pair of the roller assembly groups above to move longitudinally, and the roller assembly group comprises a roller seat and a pair of rollers rotatably arranged at two ends of the roller seat through bearing seats.The clamping device for pressure pipeline girth weld detection can adapt to pressure pipelines with different diameters through the adjustable roller assembly group and the driving assembly, avoids the trouble of frequently replacing or adjusting traditional clamps, and improves detection efficiency.

Description

Technical Field

[0001] This application relates to the field of pressure pipeline circumferential weld inspection technology, specifically a clamping device for pressure pipeline circumferential weld inspection. Background Technology

[0002] Pressure pipeline circumferential weld inspection is a series of inspection activities conducted on circumferential welds in pressure pipelines to ensure that the quality of the welds meets relevant standards and requirements, thereby ensuring the safe operation of pressure pipelines.

[0003] During the inspection process, the core function of the clamping device is to fix the inspection equipment, such as the probe and X-ray source, and to accurately position it to ensure that the inspection covers the entire circumference of the weld and the data is reliable. However, traditional clamps are usually designed for specific pipe diameters and need to be frequently replaced or adjusted, making it difficult to adapt to pipes of multiple specifications.

[0004] Therefore, this application provides a clamping device for inspecting circumferential welds in pressure pipelines to solve the above-mentioned problems. Utility Model Content

[0005] This application provides a clamping device for inspecting circumferential welds in pressure pipelines, aiming to solve the problem that existing conventional clamps, as mentioned in the background art, are usually designed for specific pipe diameters, require frequent replacement or adjustment, and are difficult to adapt to multi-specification pipelines.

[0006] To achieve the above objectives, this application provides the following technical solution: a clamping device for inspecting circumferential welds of pressure pipelines, comprising a clamping mechanism and a C-shaped bracket for supporting the clamping mechanism. The clamping mechanism includes four roller assemblies arranged in pairs on the top and base of the C-shaped bracket for contacting the top and bottom of the pipeline respectively, and a drive assembly fixedly arranged on the top for driving the pair of roller assemblies above to move longitudinally.

[0007] The idler assembly includes a roller base and a pair of rollers rotatably mounted at both ends of the roller base via bearing seats. Thus, the adjustable idler assembly and drive assembly can accommodate pressure pipes of different diameters, avoiding the inconvenience of frequent changes or adjustments to traditional clamps and improving inspection efficiency.

[0008] Preferably, the drive assembly includes a lifting plate disposed below the canopy, movable toward or away from the base and fixedly connected to a pair of roller seats above it, and a hydraulic telescopic rod fixedly mounted on the canopy with its movable end connected to the lifting plate.

[0009] Preferably, each of the four corners of the lifting plate has a limiting slide bar that penetrates through the ceiling and is slidably connected to the ceiling.

[0010] Preferably, the shaft of one of the lower rollers is connected to a rotary motor fixedly mounted on the base, and the output shaft of the rotary motor is connected to the shaft of the roller via a coupling.

[0011] Preferably, the C-shaped bracket has an inspection window in the center of its side frame for various inspection heads to pass through.

[0012] Preferably, the base has a buffer mechanism that connects to the bottom of the lower roller assembly.

[0013] Preferably, the buffer mechanism includes a self-aligning roller bearing with one end rotatably connected to the middle of the lower roller seat via an inverted conical column and the other end fixedly mounted on the base, and an air spring disposed at both ends of the bottom of the roller seat and connected to the roller seat and the base respectively.

[0014] This clamping device for inspecting circumferential welds in pressure pipelines, through its adjustable roller assembly and drive assembly, can adapt to pressure pipelines of different diameters, avoiding the hassle of frequent replacement or adjustment of traditional clamps and improving inspection efficiency.

[0015] The clamping device for inspecting circumferential welds in pressure pipelines incorporates a buffer mechanism, which reduces wear on the clamping mechanism and pipeline during clamping, extending the service life of both the device and the pipeline. Furthermore, the buffer mechanism reduces impact and vibration during clamping, making the inspection process more stable and controllable, thereby improving inspection efficiency and accuracy. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of a clamping device for inspecting circumferential welds in pressure pipelines. Figure 1 ;

[0017] Figure 2 A three-dimensional structural diagram of a clamping device for inspecting circumferential welds in pressure pipelines. Figure 2 ;

[0018] Figure 3 A side view of a clamping device for inspecting circumferential welds in pressure pipelines;

[0019] Figure 4 This is a schematic diagram of the roller assembly of a clamping device for inspecting circumferential welds in pressure pipelines.

[0020] In the picture:

[0021] 1. C-type bracket; 11. Canopy; 12. Base; 13. Side frame; 131. Inspection window;

[0022] 2. Clamping mechanism; 21. Idler roller assembly; 211. Roller seat; 212. Roller; 213. Bearing housing;

[0023] 22. Drive assembly; 221. Lifting plate; 222. Hydraulic telescopic rod; 223. Limiting slide bar; 23. Rotary motor;

[0024] 3. Buffer mechanism; 31. Self-aligning roller bearing; 311. Inverted conical column; 32. Air spring. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] Example 1

[0027] This embodiment provides a clamping device for inspecting circumferential welds in pressure pipelines, such as... Figures 1-4 As shown, the clamping device for inspecting the circumferential weld of the pressure pipeline includes a clamping mechanism 2 and a C-shaped bracket 1 for supporting the clamping mechanism 2. The clamping mechanism 2 includes two sets of four roller assemblies 21 respectively disposed on the top 11 and the base 12 of the C-shaped bracket 1 for contacting the top and bottom of the pipeline, and a drive assembly 22 fixedly disposed on the top 11 for driving the pair of upper roller assemblies 21 to move longitudinally.

[0028] The idler assembly 21 includes a roller seat 211 and a pair of rollers 212 rotatably mounted at both ends of the roller seat 211 via bearing seats 213.

[0029] In use, first, place the pressure pipe on the C-shaped bracket 1, ensuring that the canopy 11 and the base 12 are positioned above and below the pipe, respectively. Based on the pipe's diameter, adjust the longitudinal position of the upper roller assembly 21 using the drive assembly 22, so that it, together with the lower roller assembly 21, clamps the pipe, stabilizing it through the fulcrum formed by multiple contact points. After the clamping mechanism 2 stably clamps the pipe, place the testing equipment, such as a probe or X-ray source, around the pipe to perform the inspection. During inspection, start the testing equipment and inspect the circumferential weld of the pipe according to the predetermined inspection procedure, recording relevant data. After inspection, adjust the roller assembly 21 using the drive assembly 22 to release the clamp on the pipe, then disassemble the C-shaped bracket 1 and the clamping mechanism 2 to prepare for the next inspection task. The distance between the upper and lower roller assemblies 21 can be adjusted by adjusting the drive assembly 22, thus accommodating pipes of different diameters.

[0030] Specifically, the drive assembly 22 includes a lifting plate 221 located below the ceiling 11, moving closer to or away from the base 12 and fixedly connected to a pair of roller seats 211 above it, and a hydraulic telescopic rod 222 fixedly installed on the ceiling 11 with its movable end connected to the lifting plate 221. Each of the four corners of the lifting plate 221 has a limiting slide rod 223 that passes through the ceiling 11 and is slidably connected to the ceiling 11. Through the telescopic movement of the hydraulic telescopic rod 222, the lifting plate 221 can move up and down, thereby driving the upper roller assembly 21 to move closer to or away from the roller assembly 21 on the base 12, realizing the clamping of pipes of different diameters. The limiting slide rod 223 not only provides stable guidance for the lifting plate, but also limits its range of movement, ensuring stability and safety during the clamping process.

[0031] Furthermore, one of the rollers 212 below has a rotating shaft connected to a rotary motor 23 fixedly mounted on the base 12. The output shaft of the rotary motor 23 is connected to the rotating shaft of the roller 212 via a coupling. During the inspection process, the roller 212 can be driven by the rotary motor to rotate the pipe slightly, thereby achieving full-circumference inspection of the weld, improving the comprehensiveness and accuracy of the inspection, reducing manual operation, and improving inspection efficiency.

[0032] It should be noted that the side frame 13 of the C-type bracket 1 has an inspection window 131 in the center for various inspection heads to pass through; the design of the inspection window 131 allows inspection heads, such as probes, X-ray sources, etc., to directly pass through the C-type bracket to inspect the weld without disassembling the clamping device.

[0033] Example 2

[0034] Unlike Embodiment 1, when the pipe is clamped by the four sets of idler roller assemblies 21, the pipe circumferential weld may be damaged due to uneven or continuous force, resulting in loss. To address this, the base 12 has a buffer mechanism 3 connected to the bottom of the lower idler roller assembly 21. The buffer mechanism 3 includes a self-aligning roller bearing 31 with one end rotatably connected to the middle of the lower roller seat 211 via an inverted conical column 311 and the other end fixedly mounted on the base 12, and an air spring 32 disposed at both ends of the bottom of the roller seat 211 and connected to the roller seat 211 and the base 12 respectively.

[0035] The self-aligning roller bearing 31 allows for a certain displacement in the horizontal direction to accommodate the slight deformation of the pipe during clamping. The air spring 32 has excellent elasticity and buffering performance, which can absorb and disperse the impact force generated during clamping. When the idler roller assembly 21 clamps the pipe, the air spring 32 will undergo compression deformation, thereby absorbing the impact component in the clamping force and protecting the pipe from damage.

[0036] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A clamping device for inspecting circumferential welds of pressure pipelines, comprising a clamping mechanism (2) and a C-shaped bracket (1) for supporting the clamping mechanism (2), characterized in that: The clamping mechanism (2) includes two sets of four roller assemblies (21) respectively disposed on the top (11) and the base (12) of the C-shaped bracket (1) for contacting the top and bottom of the pipe respectively, and a drive assembly (22) fixedly disposed on the top (11) for driving the pair of roller assemblies (21) above to move longitudinally. The idler assembly (21) includes a roller seat (211) and a pair of rollers (212) rotatably mounted at both ends of the roller seat (211) via bearing seats (213).

2. The clamping device for inspecting circumferential welds of pressure pipelines according to claim 1, characterized in that: The drive assembly (22) includes a lifting plate (221) disposed below the canopy (11) and movable toward or away from the base (12) and fixedly connected to a pair of roller seats (211) above it, and a hydraulic telescopic rod (222) fixedly mounted on the canopy (11) and whose movable end is connected to the lifting plate (221).

3. The clamping device for inspecting circumferential welds of pressure pipelines according to claim 2, characterized in that: The lifting plate (221) has a limiting slide rod (223) at each of its four corners that passes through the roof (11) and is slidably connected to the roof (11).

4. The clamping device for inspecting circumferential welds of pressure pipelines according to claim 3, characterized in that: One of the rollers (212) below has a rotating shaft connected to a rotary motor (23) fixedly mounted on the base (12), and the output shaft of the rotary motor (23) is connected to the rotating shaft of the roller (212) via a coupling.

5. The clamping device for inspecting circumferential welds of pressure pipelines according to claim 4, characterized in that: The C-type bracket (1) has an inspection window (131) in the center of its side frame (13) for various inspection heads to pass through.

6. The clamping device for inspecting circumferential welds of pressure pipelines according to claim 5, characterized in that: The base (12) has a buffer mechanism (3) that is connected to the bottom of the roller assembly (21) below.

7. The clamping device for inspecting circumferential welds of pressure pipelines according to claim 6, characterized in that: The buffer mechanism (3) includes a self-aligning roller bearing (31) with one end rotatably connected to the middle of the roller seat (211) below via an inverted column (311) and the other end fixedly mounted on the base (12), and an air spring (32) disposed at both ends of the bottom of the roller seat (211) and connected to the roller seat (211) and the base (12) respectively.

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