A leeb hardness tester clamping device for pipe detection of a wellhead device

CN224535601UActive Publication Date: 2026-07-21PANJIN LIAOHE OILFIELD NONDESTRUCTIVE CHECKING & MEASURING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
PANJIN LIAOHE OILFIELD NONDESTRUCTIVE CHECKING & MEASURING CO LTD
Filing Date
2025-07-09
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing wellhead equipment for pipeline inspection suffers from technical bottlenecks such as limited inspection depth, slippery wellhead environment which can lead to operational risks, and difficulty in continuous longitudinal monitoring. In particular, it is difficult to achieve stable and accurate inspection in high altitudes and confined spaces.

Method used

It adopts a well wall-fitting adjustment structure and a locking and connecting start-up structure. Through the design of pressurized air rod, fitting arc block, longitudinal power motor and electromagnetic force transmission, it can achieve a stable fit and flexible adjustment of the detection probe, support rapid coarse adjustment and precise fine adjustment, and adapt to different specifications of detection probe handles.

Benefits of technology

It significantly shortens the on-site deployment time, avoids probe offset issues, and ensures the stability and accuracy of detection, making it particularly suitable for detection needs in confined underground spaces.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a pipeline detection uses leeb hardness tester clamping device of well mouth device, include: the well main body of detection, leeb hardness tester main part and the cladding support frame, the utility model relates to well pipeline strength test auxiliary equipment technical field, and the device adopts the well wall to fit the positioner structure, and the detection probe can realize annular wall free adjustment along the well wall: can be in the vertical direction and carry out longitudinal accurate positioning, can also adjust the relative position along the well mouth circumference flexibly, and support fast coarse adjustment and accurate fine adjustment double mode switching, shorten the field deployment time significantly.
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Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for well pipeline strength testing, specifically a Leeb hardness tester clamping device for pipeline inspection at a wellhead. Background Technology

[0002] Wellhead equipment is a core component of oil and gas well surface equipment, consisting of components such as the Christmas tree, valves, and manifolds. It plays a crucial role in controlling the oil and gas production process, regulating pressure, and implementing safety protection. During long-term operation, wellhead pipelines are subjected to high pressure, corrosive media, and alternating loads, making the metal materials prone to hidden damage such as hardening, embrittlement, or microcracks. The Leeb hardness tester, based on the principle of bullet impact and rebound, can quickly detect the surface hardness value of metals without damaging the pipeline structure. By observing changes in data, it can indirectly assess the degradation of material mechanical properties, effectively identify safety hazards such as stress corrosion, hydrogen embrittlement, or wear thinning, and provide a scientific basis for developing maintenance plans. Compared with traditional benchtop equipment, it is more portable and has higher testing efficiency, especially suitable for complex operating environments such as high altitudes and confined spaces, significantly improving the safety level of oil and gas facilities. However, in practical applications, it still faces technical bottlenecks such as limited testing depth, the risk of operation caused by the slippery environment at the wellhead, and difficulties in continuous longitudinal monitoring. Existing technologies may already have solutions to these problems, but this case aims to provide an alternative or replacement technical solution. Utility Model Content

[0003] To achieve the above objectives, this utility model provides the following technical solution: a Leeb hardness tester clamping device for pipeline inspection of wellhead devices, comprising: a well body to be inspected, a Leeb hardness tester body, and a covering support frame. The covering support frame is movably connected to the well body to be inspected. The Leeb hardness tester body is connected to the covering support frame via a locking and mounting connection and starting structure. A well wall fitting and adjusting structure is installed on the covering support frame. The well wall fitting and adjusting structure comprises: a pressurizing air rod, a fitting arc block, a longitudinal power shell, a longitudinal power motor, a transmission threaded rod, a longitudinal displacement module, a fine-tuning electric telescopic rod, and a load-bearing detection frame. The pressurizing air rod is installed on the covering support frame, the fitting arc block is installed on the pressurizing air rod and is connected to the main body of the well to be inspected, the longitudinal power housing is installed on the covering support frame, the longitudinal power motor is installed inside the longitudinal power housing, the transmission threaded rod is installed on the covering support frame and is connected to the longitudinal power motor, the longitudinal displacement module is movably inserted into the covering support frame and is fitted onto the transmission threaded rod, the fine-tuning electric telescopic rod is installed on the longitudinal displacement module, and the bearing detection frame is connected to the fine-tuning electric telescopic rod; It should be noted that, as described above, the covering support frame is fastened to the well wall of the well body to be inspected, and the pressurized air rod is driven to extend, so that the fitting arc block is tightly fitted to the outer surface of the well body to be inspected. Then, the longitudinal power motor in the longitudinal power housing is driven to run, thereby driving the transmission threaded rod in the covering support frame to rotate. The transmission threaded rod, relying on its thread, drives the longitudinal displacement module to move up and down within the well body to be inspected. When it reaches the designated position, the fine-tuning electric telescopic rod is driven to extend and retract, thereby driving the locking and connecting start-up structure to perform longitudinal displacement and fine adjustment within the well body to be inspected. The friction-enhancing rubber pads set on the fitting arc block can prevent slippage when the fitting arc block contacts the well body to be inspected, making the connection between the covering support frame and the well body to be inspected more stable. The handle set on the covering support frame allows the staff to move and reposition the covering support frame.

[0004] Preferably, the locking and connecting start structure includes: a data transmission line, a detection probe, a Leeb detector, a detection start key, a probe support frame, a connecting spring post, a pair of post-mounted electromagnets, and a pressing push block; The data transmission line is connected to the Leeb hardness tester body and to the testing probe. The Leeb testing probe is mounted on the testing probe. The probe support frame is fitted onto the testing probe and mounted on the bearing detection frame. The testing start button is mounted on the testing probe. The connecting spring post is mounted on the bearing detection frame. A pair of post-electromagnets are respectively mounted on the connecting spring post. The pressing push block is mounted on the connecting spring post. It should be noted that, as described above, when the bearing detection frame is moved, the detection probe mounted on the probe holder will also descend in tandem. After reaching the designated position, it drives a pair of column electromagnets inside the connecting spring column, causing the pair of column electromagnets to generate a mutual repulsive electromagnetic force, which in turn pushes the connecting spring column to extend. The extended connecting spring column then pushes the pressing push block to displace, thereby pressing the detection start button on the detection probe, which then activates the Leeb test probe on the detection probe to perform real-time detection of the hardness of the inner wall of the well body to be tested. The detected data is transmitted to the Leeb hardness tester body through the data transmission line and the parameters are displayed on the Leeb hardness tester body through the LCD screen. The operation panel on the Leeb hardness tester body allows for adjustment of the parameters that need to be adjusted during this process.

[0005] Preferably, the bonding arc block is provided with a bonding friction-enhancing pad; Preferably, the covering support frame is provided with a handle for gripping; Preferably, the Leeb hardness tester body is provided with an operation panel; Preferably, the Leeb hardness tester body is equipped with an LCD screen. Beneficial effects

[0006] This utility model provides a Leeb hardness tester clamping device for pipeline inspection in wellhead devices. It offers the following advantages compared to existing technologies: This device employs a well-wall-fitting and adjusting structure, allowing the testing probe to be freely adjusted along the well wall. It enables precise vertical positioning and flexible adjustment of the relative position around the wellhead, supporting both rapid coarse adjustment and precise fine adjustment modes, significantly shortening on-site deployment time. The matching locking and connecting activation structure, through electromagnetic force transmission design, automatically adapts to different sizes of testing probe handles and components. Operators only need to adjust the electromagnetic repulsion force via the control terminal to achieve stable contact and immediate activation of the testing module with the well wall, completely eliminating the need for complex mechanisms such as traditional mechanical clips. This design is specifically optimized for confined spaces in wells, ensuring complete contact between the testing head and the well wall while effectively avoiding probe misalignment problems common in traditional testing devices. Attached Figure Description

[0007] Figure 1 This is a front sectional view of the Leeb hardness tester clamping device for pipeline inspection of a wellhead device according to the present invention.

[0008] Figure 2 This is a schematic diagram of the probe holder support structure of the Leeb hardness tester clamping device for pipeline inspection of a wellhead device according to the present invention.

[0009] Figure 3 for Figure 1 A magnified view of the letter "A" in the diagram.

[0010] In the diagram: 1. Main body of the well to be tested; 2. Main body of the Leeb hardness tester; 3. Covering support frame; 4. Pressurized air rod; 5. Fitting arc block; 6. Longitudinal power housing; 7. Longitudinal power motor; 8. Transmission threaded rod; 9. Longitudinal displacement module; 10. Fine-tuning electric telescopic rod; 11. Bearing detection frame; 12. Data transmission line; 13. Detection probe handle; 14. Leeb test probe; 15. Detection start button; 16. Probe handle support frame; 17. Connecting spring column; 18. Column electromagnet; 19. Pressing push block. Detailed Implementation

[0011] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0012] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires. Appropriate controllers and encoders should be selected according to the actual situation to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, and will not describe the electrical control further. Example

[0013] The present invention will now be described in detail with reference to the accompanying drawings, such as... Figures 1-3 As shown, a Leeb hardness tester clamping device for pipeline inspection of a wellhead device includes: a well body 1 to be inspected, a Leeb hardness tester body 2, and a covering support frame 3. The covering support frame 3 is movably connected to the well body 1 to be inspected. The Leeb hardness tester body 2 is connected to the covering support frame 3 through a locking and mounting connection and starting structure. A well wall fitting and adjusting structure is installed on the covering support frame 3. The well wall fitting and adjusting structure includes: a pressurizing air rod 4, a fitting arc block 5, a longitudinal power housing 6, a longitudinal power motor 7, a transmission threaded rod 8, and a longitudinal displacement mold. Block 9, fine-tuning electric telescopic rod 10, and load-bearing detection frame 11; the pressurizing air rod 4 is installed on the covering support frame 3, the fitting arc block 5 is installed on the pressurizing air rod 4, and the fitting arc block 5 is connected to the body 1 of the well to be detected, the longitudinal power housing 6 is installed on the covering support frame 3, the longitudinal power motor 7 is installed inside the longitudinal power housing 6, the transmission threaded rod 8 is installed on the covering support frame 3, and the transmission threaded rod 8 is connected to the longitudinal power motor 7, and the longitudinal displacement module 9 is movably inserted into the... The longitudinal displacement module 9 is mounted on the transmission threaded rod 8 and the micro-adjustment electric telescopic rod 10 is installed on the longitudinal displacement module 9. The bearing detection frame 11 is connected to the micro-adjustment electric telescopic rod 10. The locking and connecting start structure includes: a data transmission line 12, a detection probe 13, a Leeb detection probe 14, a detection start button 15, a probe support frame 16, a connecting spring column 17, a pair of column-mounted electromagnets 18, and a pressing push block 19. The data transmission line 12 is connected to the Leeb hardness tester body 2. The data transmission line 12 is connected to the detection probe 13, the Leeb detector 14 is mounted on the detection probe 13, the probe support frame 16 is fitted on the detection probe 13, and the probe support frame 16 is mounted on the bearing detection frame 11. The detection start button 15 is mounted on the detection probe 13, the connecting spring post 17 is mounted on the bearing detection frame 11, a pair of post-electromagnets 18 are respectively mounted on the connecting spring post 17, and the pressing push block 19 is mounted on the connecting spring post 17.

[0014] According to the appendix Figures 1-3 The process involves attaching the supporting frame 3 to the well wall of the well body 1 to be inspected, driving the pressurized air rod 4 to extend, thus ensuring that the fitting arc block 5 is tightly fitted to the outer surface of the well body 1. Then, the longitudinal power motor 7 inside the longitudinal power housing 6 is driven to rotate, thereby rotating the transmission threaded rod 8 inside the supporting frame 3. The transmission threaded rod 8, relying on its threads, drives the longitudinal displacement module 9 to move up and down within the well body 1. Upon reaching the designated position, the fine-tuning electric telescopic rod 10 is driven to extend and retract, thereby causing the locking and connecting start-up structure to move longitudinally within the well body 1 and make fine adjustments. The friction-enhancing rubber pads on the fitting arc block 5 prevent slippage when it contacts the well body 1, making the connection between the supporting frame 3 and the well body 1 more stable. The handle on the supporting frame 3 facilitates the handling of the components. The supporting frame 3 moves and shifts; when the supporting detection frame 11 is moved and shifted, the detection probe 13, which is mounted on the probe support frame 16, also descends in tandem. After reaching the designated position, it drives a pair of column electromagnets 18 inside the connecting spring column 17, causing the pair of column electromagnets 18 to generate a mutually repulsive electromagnetic force, thereby pushing the connecting spring column 17 to extend. The extended connecting spring column 17 then pushes the pressing push block 19 to move, thereby pressing the detection start button 15 on the detection probe 13, thus activating the Leeb detection probe 14 on the detection probe 13 to perform real-time detection of the hardness of the inner wall of the well body 1 to be detected. The detected data is transmitted to the Leeb hardness tester body 2 through the data transmission line 12, and the parameters are displayed on the Leeb hardness tester body 2 through the LCD screen. The operation panel on the Leeb hardness tester body 2 can adjust the parameters that need to be adjusted during this process.

[0015] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A Leeb hardness tester clamping device for pipeline inspection of wellhead equipment, comprising: The test includes a main body of the well to be tested, a main body of the Leeb hardness tester, and a covering support frame. The covering support frame is movably connected to the main body of the well to be tested. The main body of the Leeb hardness tester is connected to the covering support frame through a locking and mounting connection and starting structure. A well wall fitting and adjusting structure is installed on the covering support frame. The well wall fitting and adjusting structure includes: a pressurizing air rod, a fitting arc block, a longitudinal power shell, a longitudinal power motor, a transmission threaded rod, a longitudinal displacement module, a fine-tuning electric telescopic rod, and a load-bearing detection frame. The pressurizing air rod is installed on the covering support frame, the fitting arc block is installed on the pressurizing air rod and connected to the main body of the well to be inspected, the longitudinal power housing is installed on the covering support frame, the longitudinal power motor is installed inside the longitudinal power housing, the transmission threaded rod is installed on the covering support frame and connected to the longitudinal power motor, the longitudinal displacement module is movably inserted into the covering support frame and fitted onto the transmission threaded rod, the fine-tuning electric telescopic rod is installed on the longitudinal displacement module, and the bearing detection frame is connected to the fine-tuning electric telescopic rod.

2. The Leeb hardness tester clamping device for pipeline inspection of a wellhead device according to claim 1, characterized in that, The locking and connecting start structure includes: a data transmission line, a detection probe, a Leeb detector, a detection start key, a probe support frame, a connecting spring post, a pair of post-mounted electromagnets, and a pressing push block; The data transmission line is connected to the Leeb hardness tester body and to the testing probe. The Leeb testing probe is mounted on the testing probe. The probe support frame is fitted onto the testing probe and mounted on the bearing detection frame. The testing start button is mounted on the testing probe. The connecting spring post is mounted on the bearing detection frame. A pair of post-electromagnets are respectively mounted on the connecting spring post. The pressing push block is mounted on the connecting spring post.

3. The Leeb hardness tester clamping device for pipeline inspection of a wellhead device according to claim 2, characterized in that, The bonding arc block is provided with a bonding friction-enhancing pad.

4. The Leeb hardness tester clamping device for pipeline inspection of a wellhead device according to claim 3, characterized in that, The supporting frame is equipped with a handle for gripping.

5. The Leeb hardness tester clamping device for pipeline inspection of a wellhead device according to claim 4, characterized in that, The Leeb hardness tester is equipped with an operation panel.

6. The Leeb hardness tester clamping device for pipeline inspection of a wellhead device according to claim 5, characterized in that, The Leeb hardness tester is equipped with an LCD screen.