A probe holding device for pipeline eddy current testing

Abstract

This utility model provides a probe clamping device for pipeline eddy current testing, including a base, a rectangular seat inserted into the base, an adjustment mechanism disposed within the rectangular seat, a hollow column fixedly mounted on the top of the rectangular seat, a trapezoidal lead screw rotatably connected within the hollow column, a sliding column threaded onto the trapezoidal lead screw, a mounting plate disposed above the sliding column, a lower clamp fixedly mounted on the mounting plate, an auxiliary plate fixedly mounted on the top of the mounting plate, an upper clamp slidably connected to the auxiliary plate, a first threaded rod rotatably connected to the lower clamp, the first threaded rod being threadedly connected to the upper clamp, and a locking mechanism disposed on the protruding plate. This clamping device can effectively resist mechanical vibration or scanning friction during pipeline testing, preventing probe displacement due to loose clamping plates. Furthermore, its modular design facilitates disassembly and reassembly for easy handling and transport, and allows for easy adjustment of the clamping height.

Description

Technical Field

[0001] This utility model relates to the field of eddy current flaw detection, and more specifically, to a probe clamping device for pipeline eddy current detection. Background Technology

[0002] Eddy current testing of pipelines is a non-destructive testing technique that utilizes the principle of electromagnetic induction to inspect metal pipelines. During testing, a probe generates a high-frequency alternating magnetic field, which induces eddy currents within the pipe wall when it approaches the pipe surface. If defects such as cracks, corrosion, or thinning of the pipe exist, the distribution of eddy currents will change, thus affecting the impedance signal of the probe. By analyzing the signal changes, the location and size of the defects can be identified. This method does not require a coupling agent and is suitable for complex operating conditions such as high temperatures, coatings, or confined spaces. It is widely used in pipeline quality assessment and in-service inspection in industries such as petroleum, chemical, and nuclear power.

[0003] Existing probe clamping devices typically use threaded rods to drive clamping plates. During testing, the threaded rods may gradually retract due to vibration, leading to a decrease in clamping force and poor contact between the probe and the pipe wall. Furthermore, the integrated support is difficult to handle or transport. Therefore, we propose an improved probe clamping device for pipeline eddy current testing. Utility Model Content

[0004] To address the problems raised in the background art, this utility model provides the following technical solution:

[0005] A probe clamping device for pipeline eddy current testing is proposed to improve the above-mentioned problems.

[0006] The present invention is as follows:

[0007] The device includes a base, on which a rectangular seat is inserted. An adjustment mechanism is located within the rectangular seat. A hollow column is fixedly mounted on the top of the rectangular seat. A trapezoidal lead screw is rotatably connected within the hollow column. A sliding column is threaded onto the trapezoidal lead screw. A mounting plate is positioned above the sliding column. A lower chuck is fixedly mounted on the mounting plate. An auxiliary plate is fixedly mounted on the top of the mounting plate. An upper chuck is slidably connected to the auxiliary plate. A first threaded rod is rotatably connected to the lower chuck and threadedly connected to the upper chuck. A first throttle is fixedly mounted on the top of the first threaded rod. A protruding plate is fixedly mounted on the top of the auxiliary plate, and a locking mechanism is provided on the protruding plate.

[0008] As a preferred technical solution of this utility model, the base is provided with a first slot, the first slot is matched with the rectangular base, and the front of the base is provided with a first fixing bolt for fixing the rectangular base.

[0009] As a preferred technical solution of this utility model, the adjustment mechanism includes a first bevel gear rotatably connected to a rectangular base, and a third throttle is fixedly installed on the first bevel gear.

[0010] As a preferred technical solution of this utility model, a second bevel gear is fixedly connected to the bottom of the trapezoidal lead screw, and the first bevel gear meshes with the second bevel gear.

[0011] As a preferred technical solution of this utility model, the bottom of the mounting plate is provided with a second slot, which matches the sliding column, and the front of the mounting plate is provided with a second fixing bolt for fixing the sliding column.

[0012] As a preferred technical solution of this utility model, the locking mechanism includes a second threaded rod threadedly connected to the convex plate, and a rubber block is fixedly bonded to the end of the second threaded rod.

[0013] As a preferred technical solution of this utility model, a second throttle is fixedly installed at the end of the second threaded rod away from the rubber block.

[0014] As a preferred technical solution of this utility model, the sliding column sidewall is provided with a guide groove, and a guide block is fixedly installed inside the hollow column, the guide block matching the guide groove.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] In the solution of this utility model:

[0017] 1. By rotating the second handle, the second threaded rod rotates and moves, pushing the rubber block to press against the first handle on the first threaded rod. The frictional damping of the rubber prevents the thread from retracting due to vibration. This effectively resists mechanical vibration or scanning friction during pipeline inspection, avoids probe displacement caused by loose clamping plates, and solves the problem in existing technologies where the threaded rod may gradually retract due to vibration, leading to a decrease in clamping force and poor contact between the probe and the pipe wall.

[0018] 2. The base and rectangular seat are connected by the first slot and then secured with the first fixing bolt; the sliding column and mounting plate are connected by the second slot and then secured with the second fixing bolt; this allows for easy disassembly and reassembly for handling or transportation, solving the problem of difficult handling or transportation of integrated brackets in the prior art.

[0019] 3. The first bevel gear is driven by the third throttle, which in turn drives the second bevel gear that meshes with it to rotate. The rotation of the second bevel gear drives the trapezoidal lead screw to rotate inside the hollow column. The rotation of the trapezoidal lead screw pushes the slide column to slide vertically inside the hollow column. The slide column then drives the height adjustment of the top mounting plate and the chuck, thus realizing convenient adjustment of the required clamping height. Attached Figure Description

[0020] Figure 1 A schematic diagram of the probe clamping device for pipeline eddy current detection provided by this utility model;

[0021] Figure 2 A schematic diagram of the guide block structure of the probe clamping device for pipeline eddy current detection provided by this utility model;

[0022] Figure 3 A partial structural schematic diagram of the probe clamping device for pipeline eddy current detection provided by this utility model;

[0023] Figure 4 A schematic diagram of the locking mechanism of the probe clamping device for pipeline eddy current detection provided by this utility model;

[0024] Figure 5 A schematic diagram of the second slot structure of the probe clamping device for pipeline eddy current detection provided by this utility model;

[0025] Figure 6 A schematic diagram of the upper clamp structure of the probe clamping device for pipeline eddy current detection provided by this utility model;

[0026] Figure 7 A schematic diagram of the first slot structure of the probe clamping device for pipeline eddy current detection provided by this utility model;

[0027] Figure 8 A schematic diagram of the hollow column side cross-section structure of the probe clamping device for pipeline eddy current detection provided by this utility model;

[0028] Figure 9 A schematic diagram of the guide groove structure of the probe clamping device for pipeline eddy current detection provided by this utility model.

[0029] The image shows:

[0030] 1. Base; 2. Rectangular base; 3. Hollow column; 4. Trapezoidal lead screw; 5. Sliding column; 6. Mounting plate; 7. Auxiliary plate; 8. Lower chuck; 9. Upper chuck; 10. First threaded rod; 11. First throttle; 12. Protruding plate; 13. First slot; 14. First fixing bolt; 15. First bevel gear; 16. Third throttle; 17. Second bevel gear; 18. Second slot; 19. Second fixing bolt; 20. Second threaded rod; 21. Rubber block; 22. Guide block; 23. Guide groove; 24. Second throttle. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0032] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0033] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] Example:

[0037] like Figure 1-9As shown, this embodiment proposes a probe clamping device for pipeline eddy current detection, including a base 1, a rectangular seat 2 inserted into the base 1, an adjustment mechanism inside the rectangular seat 2, the adjustment mechanism driving a trapezoidal lead screw 4 to rotate, a hollow column 3 fixedly mounted on the top of the rectangular seat 2, and a trapezoidal lead screw 4 rotatably connected inside the hollow column 3. The trapezoidal lead screw 4 has high frictional resistance and naturally possesses self-locking properties; a sliding column 5 is threadedly connected to the trapezoidal lead screw 4, the rotation of the trapezoidal lead screw 4 drives the sliding column 5 to move, a mounting plate 6 is provided above the sliding column 5, the movement of the sliding column 5 drives the mounting plate 6, and a fixed... A lower chuck 8 is installed, and an auxiliary plate 7 is fixedly installed on the top of the mounting plate 6. An upper chuck 9 is slidably connected to the auxiliary plate 7. A first threaded rod 10 is rotatably connected to the lower chuck 8. The first threaded rod 10 is threadedly connected to the upper chuck 9. The rotation of the first threaded rod 10 causes the upper chuck 9 to slide downward along the auxiliary plate 7. A first throttle 11 is fixedly installed on the top of the first threaded rod 10. The rotation of the first throttle 11 causes the first threaded rod 10 to rotate. A protruding plate 12 is fixedly installed on the top of the auxiliary plate 7. A locking mechanism is provided on the protruding plate 12 to prevent the first threaded rod 10 from loosening.

[0038] A first slot 13 is provided on the base 1, which matches the rectangular seat 2. The base 1 and the rectangular seat 2 are connected by the first slot 13. A first fixing bolt 14 for fixing the rectangular seat 2 is provided on the front of the base 1. The rectangular seat 2 is fastened by the first fixing bolt 14.

[0039] The adjustment mechanism includes a first bevel gear 15 rotatably connected to a rectangular base 2, a third throttle 16 fixedly mounted on the first bevel gear 15, rotating the third throttle 16 drives the first bevel gear 15, and a second bevel gear 17 fixedly connected to the bottom of the trapezoidal lead screw 4. The first bevel gear 15 meshes with the second bevel gear 17, the first bevel gear 15 drives the meshing second bevel gear 17 to rotate, and the rotation of the second bevel gear 17 drives the trapezoidal lead screw 4 to rotate.

[0040] A second slot 18 is provided at the bottom of the mounting plate 6. The second slot 18 matches the sliding column 5. The sliding column 5 and the mounting plate 6 are connected by the second slot 18. A second fixing bolt 19 is provided on the front of the mounting plate 6 for fixing the sliding column 5. The sliding column 5 is fixed by the second fixing bolt 19.

[0041] The locking mechanism includes a second threaded rod 20 threadedly connected to the convex plate 12. A rubber block 21 is fixedly bonded to the end of the second threaded rod 20. A second handle 24 is fixedly installed at the end of the second threaded rod 20 away from the rubber block 21. Rotating the second handle 24 causes the second threaded rod 20 to rotate and move, pushing the rubber block 21 to press against the first handle 11 on the first threaded rod 10. The frictional damping of the rubber prevents the thread from retracting due to vibration.

[0042] A guide groove 23 is provided on the side wall of the sliding column 5, and a guide block 22 is fixedly installed inside the hollow column 3. The guide block 22 matches the guide groove 23. When the sliding column 5 slides, the guide groove 23 on the sliding column 5 slides along the guide block 22.

[0043] Specifically, when using the probe clamping device for pipeline eddy current detection, the device is first assembled: the base 1 and the rectangular base 2 are inserted through the first slot 13 and then fastened with the first fixing bolt 14; the sliding column 5 and the mounting plate 6 are inserted through the second slot 18 and then fixed with the second fixing bolt 19; this modular design makes it easy to disassemble and handle or move.

[0044] After assembly, the height is adjusted according to the required clamping height: rotating the third throttle 16 drives the first bevel gear 15, the first bevel gear 15 drives the second bevel gear 17 meshing with it to rotate, the rotation of the second bevel gear 17 drives the trapezoidal screw 4 to rotate in the hollow column 3, the rotation of the trapezoidal screw 4 pushes the slide column 5 to slide vertically in the hollow column 3, while the slide column 5 slides, the guide groove 23 on the slide column 5 slides along the guide block 22, and the slide column 5 drives the height adjustment of the top mounting plate 6 and the clamp part;

[0045] After adjustment, place the detection probe on the lower chuck 8, then rotate the first throttle 11 to drive the first threaded rod 10. The rotation of the first threaded rod 10 drives the upper chuck 9 to slide down along the auxiliary plate 7, forming a bidirectional clamping force on the probe with the lower chuck 8. The contact surface of the chuck is provided with a rubber pad.

[0046] Finally, by rotating the second handle 24, the second threaded rod 20 is rotated and moved, pushing the rubber block 21 to press against the first handle 11 on the first threaded rod 10. The frictional damping of the rubber prevents the thread from retracting due to vibration. This effectively resists mechanical vibration or scanning friction during pipeline inspection and avoids probe displacement caused by loose clamps.

[0047] All technical features in this embodiment can be freely combined according to actual needs.

[0048] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A probe clamping device for pipeline eddy current detection, comprising a base (1), characterized in that, A rectangular seat (2) is inserted into the base (1). An adjustment mechanism is provided inside the rectangular seat (2). A hollow column (3) is fixedly installed on the top of the rectangular seat (2). A trapezoidal screw (4) is rotatably connected inside the hollow column (3). A sliding column (5) is threadedly connected to the trapezoidal screw (4). An installation plate (6) is provided above the sliding column (5). A lower chuck (8) is fixedly installed on the installation plate (6). An auxiliary plate (7) is fixedly installed on the top of the installation plate (6). An upper chuck (9) is slidably connected on the auxiliary plate (7). A first threaded rod (10) is rotatably connected to the lower chuck (8). The first threaded rod (10) is threadedly connected to the upper chuck (9). A first throttle (11) is fixedly installed on the top of the first threaded rod (10). A protruding plate (12) is fixedly installed on the top of the auxiliary plate (7). A locking mechanism is provided on the protruding plate (12).

2. The probe clamping device for pipeline eddy current detection according to claim 1, characterized in that, The base (1) has a first slot (13) that matches the rectangular seat (2), and the front of the base (1) has a first fixing bolt (14) for fixing the rectangular seat (2).

3. The probe clamping device for pipeline eddy current detection according to claim 1, characterized in that, The adjustment mechanism includes a first bevel gear (15) rotatably connected to a rectangular base (2), and a third throttle (16) is fixedly mounted on the first bevel gear (15).

4. The probe clamping device for pipeline eddy current detection according to claim 3, characterized in that, The bottom of the trapezoidal lead screw (4) is fixedly connected to a second bevel gear (17), and the first bevel gear (15) meshes with the second bevel gear (17).

5. A probe clamping device for pipeline eddy current detection according to claim 1, characterized in that, The mounting plate (6) has a second slot (18) at the bottom, which matches the slide column (5). The mounting plate (6) has a second fixing bolt (19) on the front for fixing the slide column (5).

6. A probe clamping device for pipeline eddy current detection according to claim 1, characterized in that, The locking mechanism includes a second threaded rod (20) threaded onto the convex plate (12), and a rubber block (21) is fixedly bonded to the end of the second threaded rod (20).

7. A probe clamping device for pipeline eddy current detection according to claim 6, characterized in that, The second threaded rod (20) is fixedly mounted with a second throttle (24) at the end away from the rubber block (21).

8. A probe clamping device for pipeline eddy current detection according to claim 1, characterized in that, The sliding column (5) has a guide groove (23) on its side wall, and a guide block (22) is fixedly installed inside the hollow column (3). The guide block (22) matches the guide groove (23).

Images