Compensator welding detection device
By designing a circumferential detection structure and a clamping and fixing mechanism for the detection device, the problems of existing devices being unable to perform circumferential detection and having inconvenient clamping were solved, enabling comprehensive and accurate detection and fixing of compensator welding and improving detection accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU BT PIPE CO LTD
- Filing Date
- 2024-12-02
- Publication Date
- 2026-05-12
AI Technical Summary
Existing compensator welding inspection devices cannot perform circumferential inspection, which may lead to missed welding defects. Furthermore, they are not convenient for clamping and fixing the compensator, affecting the inspection accuracy and quality assessment.
A structure including a testing platform, a sleeve, a drive motor, a rotating rod, a gear, a toothed ring, and a testing probe is designed. The drive motor drives the rotating rod and gear to rotate, causing the toothed ring to rotate along the sleeve, thus achieving circumferential testing. At the same time, the limit plate and the cooperation between the threaded rod and the nut are used to clamp and fix the compensator.
This enables comprehensive and accurate inspection of compensator welding, preventing shaking from affecting inspection accuracy and ensuring a comprehensive assessment of welding quality.
Smart Images

Figure CN224231729U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of compensator welding inspection device, specifically a compensator welding inspection device. Background Technology
[0002] Expansion joints, also known as compensators or expansion joints, are devices used to compensate for dimensional changes in pipelines, containers, or equipment caused by factors such as temperature variations and mechanical vibrations. Their main purpose is to absorb the displacement resulting from these changes, preventing damage to the pipeline system or equipment due to excessive stress, such as pipe ruptures, leaks at connections, or equipment deformation. Expansion joints require welding during production, necessitating the use of inspection devices to check the weld joints. Current welding inspection devices for expansion joints are inconvenient for circumferential inspection; therefore, a new welding inspection device for expansion joints is needed.
[0003] Existing compensator welding inspection devices are inconvenient for circumferential inspection of the compensator during use, which may lead to the omission of welding defects in other circumferential parts. As a result, it is impossible to comprehensively and accurately determine the overall quality of the compensator welding. Furthermore, it is inconvenient to clamp and fix the compensator. Therefore, there is an urgent need for a new compensator welding inspection device. Utility Model Content
[0004] Based on this, the purpose of this utility model is to provide a compensator welding inspection device to solve the problems of existing compensator welding inspection devices being inconvenient for circumferential inspection of compensators and for clamping and fixing compensators.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a compensator welding inspection device, comprising an inspection table, a sleeve fixedly connected to the top of the inspection table, a drive motor mounted on the outer wall of the inspection table, a rotating rod fixedly connected to the output shaft of the drive motor via a coupling, a gear fixedly connected to the outer wall of the rotating rod, a gear ring movably connected inside the sleeve, and an inspection probe fixedly connected to the inner wall of the gear ring.
[0006] A bracket is fixedly connected to the top of the testing platform, a first limiting plate is fixedly connected to the top of the bracket, a threaded rod is fixedly connected to the top of the first limiting plate, a second limiting plate is installed on the outer wall of the threaded rod, and a nut is installed on the outer wall of the threaded rod.
[0007] Preferably, the sleeve and the toothed ring form a rotating structure, and the sleeve has a slotted design.
[0008] Preferably, the sleeve is welded to the testing table, and the sleeve is semi-arc-shaped.
[0009] Preferably, the gear forms a rotating structure with the testing platform via a rotating rod, and the gear meshes with a gear ring.
[0010] Preferably, the threaded rod is movably connected to the second limiting plate, and the second limiting plate has an open hole design.
[0011] Preferably, the threaded rod is threadedly connected to the nut, and the threaded rod is symmetrically arranged with respect to the central axis of the first limiting plate.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] 1. This utility model, through the setting of a sleeve, drive motor, rotating rod, gear, toothed ring and detection probe, can make the rotating rod rotate by starting the drive motor, which drives the gear to rotate, and the toothed ring to rotate along the sleeve, so that the detection probe can make a circumferential motion along the weld of the compensator, which can facilitate the circumferential detection of the weld of the compensator, and can more comprehensively and accurately determine the overall quality of the compensator weld.
[0014] 2. This utility model, through the setting of a toothed ring, a first limiting plate, a threaded rod, a second limiting plate, and a nut, allows the compensator to be placed on the first limiting plate and its position adjusted so that the weld joint of the compensator is located inside the toothed ring. The second limiting plate is then moved to slide down along the threaded rod, and the nut is then connected to one end of the threaded rod and rotated. This allows the second limiting plate to press down on the compensator, which facilitates the clamping and fixing of the compensator and prevents the accuracy of welding inspection from being affected by the shaking of the compensator. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0016] Figure 2 This is a perspective view of the frame of this utility model;
[0017] Figure 3 This is a perspective view of the toothed ring of this utility model;
[0018] Figure 4 This is a schematic diagram showing the disassembled structure of this utility model.
[0019] In the diagram: 1. Testing platform; 2. Sleeve; 3. Drive motor; 4. Rotating rod; 5. Gear; 6. Gear ring; 7. Testing probe; 8. Bracket; 9. First limiting plate; 10. Threaded rod; 11. Second limiting plate; 12. Nut. Detailed Implementation
[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0021] The embodiments of this utility model will be described below based on its overall structure.
[0022] Please see Figure 1-4 A compensator welding inspection device includes an inspection table 1, a sleeve 2 fixedly connected to the top of the inspection table 1, a drive motor 3 mounted on the outer wall of the inspection table 1, a rotating rod 4 fixedly connected to the output shaft of the drive motor 3 via a coupling, a gear 5 fixedly connected to the outer wall of the rotating rod 4, a gear ring 6 movably connected inside the sleeve 2, and a detection probe 7 fixedly connected to the inner wall of the gear ring 6. The sleeve 2 and the gear ring 6 form a rotating structure, and the sleeve 2 is a slotted design. The sleeve 2 is welded to the inspection table 1, and the sleeve 2 is semi-arc-shaped. The gear 5 forms a rotating structure with the inspection table 1 via the rotating rod 4, and the gear 5 meshes with the gear ring 6, which facilitates circumferential inspection of the welded joint of the compensator.
[0023] Please see Figure 1-4 A compensator welding inspection device is disclosed. The top of the inspection table 1 is fixedly connected to a bracket 8, the top of the bracket 8 is fixedly connected to a first limiting plate 9, the top of the first limiting plate 9 is fixedly connected to a threaded rod 10, a second limiting plate 11 is installed on the outer wall of the threaded rod 10, and a nut 12 is installed on the outer wall of the threaded rod 10. The threaded rod 10 and the second limiting plate 11 are movably connected, and the second limiting plate 11 is designed with an open hole. The threaded rod 10 and the nut 12 are threadedly connected, and the threaded rod 10 is symmetrically arranged with the central axis of the first limiting plate 9, which can facilitate the clamping and fixing of the compensator.
[0024] Working principle: In use, the compensator is placed on the first limiting plate 9 and its position is adjusted so that the weld joint of the compensator is placed inside the toothed ring 6. The second limiting plate 11 is moved so that it slides down along the threaded rod 10. Then, the nut 12 is connected to one end of the threaded rod 10 and rotated. Since the nut 12 is threadedly connected to the threaded rod 10, the second limiting plate 11 can press down on the compensator, causing the first limiting plate 9 and the second limiting plate 11 to clamp the compensator and prevent it from shaking during the inspection process. By starting the drive motor 3, the rotating rod 4 can be rotated, which drives the gear 5 to rotate. Since the gear 5 is meshed with the toothed ring 6, the toothed ring 6 can rotate along the sleeve 2, causing the detection probe 7 to make a circumferential motion along the weld of the compensator, which can perform a comprehensive scan inspection of the welding quality of the compensator. This completes the use of the device. The contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A compensator welding inspection device, comprising an inspection table (1), characterized in that: The top of the testing platform (1) is fixedly connected to a sleeve (2), and a drive motor (3) is installed on the outer wall of the testing platform (1). The output shaft of the drive motor (3) is fixedly connected to a rotating rod (4) through a coupling. A gear (5) is fixedly connected to the outer wall of the rotating rod (4). A gear ring (6) is movably connected inside the sleeve (2), and a testing probe (7) is fixedly connected to the inner wall of the gear ring (6). The top of the testing platform (1) is fixedly connected to a bracket (8), the top of the bracket (8) is fixedly connected to a first limiting plate (9), the top of the first limiting plate (9) is fixedly connected to a threaded rod (10), the outer wall of the threaded rod (10) is fitted with a second limiting plate (11), and the outer wall of the threaded rod (10) is fitted with a nut (12).
2. The compensator welding inspection device according to claim 1, characterized in that: The sleeve (2) and the toothed ring (6) form a rotating structure, and the sleeve (2) is a slotted design.
3. The compensator welding inspection device according to claim 1, characterized in that: The sleeve (2) is welded to the testing table (1), and the sleeve (2) is set in a semi-arc shape.
4. The compensator welding inspection device according to claim 1, characterized in that: The gear (5) forms a rotating structure with the testing table (1) through the rotating rod (4), and the gear (5) meshes with the gear ring (6).
5. The compensator welding inspection device according to claim 1, characterized in that: The threaded rod (10) is movably connected to the second limiting plate (11), and the second limiting plate (11) is designed with an opening.
6. The compensator welding inspection device according to claim 1, characterized in that: The threaded rod (10) is threadedly connected to the nut (12), and the threaded rod (10) is symmetrically arranged with respect to the central axis of the first limiting plate (9).