Pulsed eddy current probe device for detecting welding seam of small connecting pipe

Abstract

The utility model discloses a pulsed eddy current probe device for small connecting pipe welding seam detection, which comprises a probe body and a support plate, a connecting plate is arranged on one side of the bottom end of the support plate, one end of the connecting plate is fixedly connected with a mounting plate, one side of the probe body is fixedly connected with an inserting plate, and the inserting plate is fixedly connected with the probe body. Inserting grooves corresponding to the inserting plates are formed in the supporting plate, two bearing plates which are symmetrically arranged are fixedly connected to one side of the supporting plate, open grooves are formed in one ends of the two bearing plates, rotating rods are rotationally connected into the open grooves, overturning plates fixedly sleeve the rotating rods, and torsional springs sleeve the two ends of the rotating rods; according to the probe fixing device, the overall structure is simple to operate, the probe can be conveniently disassembled and assembled by adopting the clamping and fixing assembly, the maintenance operation is convenient and fast, and the probe fixing device can meet the use requirements of pipelines with different sizes due to the arrangement of the displacement adjusting assembly.

Description

Technical Field

[0001] The utility model relates to the field of products related to weld detection, in particular to a pulse eddy current probe device used for small pipe weld detection. Background Art

[0002] Small pipes refer to pipes that connect pressure vessels, pressure pipes and pressure gauges, liquid level gauges, thermocouples, drainage guides, exhaust valves and other pipe fittings, valves, and instruments. They are characterized by being within the first valve, with a small diameter and thin pipe walls. Pipes are easily cracked due to the influence of high temperature, high pressure and complex external environment during long-term use. At the same time, the inner wall of the pipe is eroded and corroded by the medium, resulting in large-scale corrosion and thinning of the wall thickness. If effective monitoring or maintenance is not carried out, the above defects will expand rapidly under high pressure, causing cracks in the pipe wall and then causing pipeline leakage or even explosion, which will cause huge economic losses and cause great pollution and harm to the environment.

[0003] Pulse eddy current testing is generally used for weld inspection of small pipes. However, the existing pulse eddy current testing probes are mostly fixed and installed by multiple screws. They need to be removed one by one during subsequent maintenance work, which is cumbersome, time-consuming and labor-intensive to install on site, and has defects. Utility Model Content

[0004] The utility model aims to provide a pulse eddy current probe device for detecting small pipe welds, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a pulse eddy current probe device for small pipe weld detection, comprising a probe body and a support plate, a connecting plate is provided on one side of the bottom end of the support plate, one end of the connecting plate is fixedly connected to the mounting plate, one side of the probe body is fixedly connected to a plug plate, the support plate is provided with a slot corresponding to the plug plate, one side of the support plate is fixedly connected to two symmetrically arranged bearing plates, one end of the two bearing plates is provided with a slot, a rotating rod is rotatably connected in the slot, a flip plate is fixedly sleeved on the rotating rod, both ends of the rotating rod are sleeved with torsion springs, the two ends of the torsion spring are respectively fixedly connected to the outer wall of the flip plate and the slot, one end of the flip plate is fixedly connected to a card block, the outer side wall of the plug plate is provided with a card slot corresponding to the card block, and the support plate is close to the probe body. The two ends of the threaded rod are threadedly connected with an adjusting plate, and one end of the adjusting plate is rotatably connected to the guide plate, and the other end of the adjusting plate is rotatably connected to the guide plate.

[0006] Preferably, four corners of the mounting plate are provided with assembly holes, and fixing bolts are inserted into the assembly holes.

[0007] Preferably, a side of the pressure plate close to the probe body is provided with a plurality of anti-slip grooves arranged in an inclined manner.

[0008] Preferably, a pressing plate is fixedly connected to one end of the flip plate, and a rubber plate is fixedly connected to the pressing plate.

[0009] Preferably, the elastic member is a spring.

[0010] Preferably, a stop groove is provided on the inner side wall of the rotating groove, a stop rod is fixedly connected in the stop groove, and one end of the adjustment plate is slidably sleeved on the stop rod.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The pulse eddy current probe device for small pipe weld detection drives the rotating rod to rotate in the slot on the bearing plate by pressing two flip plates, then inserts the plug plate on the probe body into the slot on the support plate, and releases the flip plate. At this time, the rotating rod drives the flip plate to drive the card block to be inserted into the card slot on the plug plate through the torsion force of the torsion spring to fix the plug plate. During installation, the probe body will fit the pressure plate to drive the traction rod to push the slider to slide on the slide rod. At this time, the two sliders will stretch the elastic member. After installation, the resilience of the elastic member will drive the pressure plate to push the probe body back to achieve the stability of the card block in the card slot on the plug plate.

[0013] By starting the motor, the threaded rod can be driven to rotate in the rotating groove. At this time, the two adjustment plates on which the threads are sleeved will move relative to each other to realize the movement of the swing plate. The swing plate will then push the positioning plate to adjust the position of the support plate, thereby adjusting the distance between the probe body and the pipeline.

[0014] The utility model has an overall structure and is easy to operate. The clamping fixing assembly is adopted to facilitate the disassembly and assembly of the probe, and the maintenance operation is convenient. Moreover, the setting of the displacement adjustment assembly can meet the use of pipelines of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of a pulsed eddy current probe device for detecting small pipe welds of the utility model;

[0016] Figure 2 This is an enlarged view of point A of a pulsed eddy current probe device for small pipe weld detection according to the utility model;

[0017] Figure 3 It is a schematic diagram of the structure of the rotating rod of a pulse eddy current probe device for small pipe weld detection according to the utility model;

[0018] Figure 4 The utility model is a schematic diagram of the structure of the threaded rod of a pulse eddy current probe device used for small pipe weld detection.

[0019] In the figure: 1. probe body; 2. support plate; 3. connecting plate; 4. mounting plate; 5. plug plate; 6. bearing plate; 7. rotating rod; 8. flip plate; 9. torsion spring; 10. block; 11. sliding rod; 12. sliding block; 13. elastic member; 14. traction rod; 15. pressure plate; 16. fixing bolt; 17. pressing plate; 18. motor; 19. threaded rod; 20. adjusting plate; 21. swinging plate; 22. positioning plate; 23. stop rod. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] See also Figure 1-4 The utility model provides an embodiment: a pulse eddy current probe device for small pipe weld detection, comprising a probe body 1 and a support plate 2, a connecting plate 3 is provided on one side of the bottom end of the support plate 2, one end of the connecting plate 3 is fixedly connected to a mounting plate 4, one side of the probe body 1 is fixedly connected to a plug plate 5, a slot corresponding to the plug plate 5 is provided on the support plate 2, one side of the support plate 2 is fixedly connected to two symmetrically arranged bearing plates 6, one end of the two bearing plates 6 is provided with a slot, a rotating rod 7 is rotatably connected in the slot, a flip plate 8 is fixedly sleeved on the rotating rod 7, both ends of the rotating rod 7 are sleeved with a torsion spring 9, and the two ends of the torsion spring 9 are respectively connected to the outer wall of the flip plate 8 and the opening The slot is fixedly connected, one end of the flip plate 8 is fixedly connected with a card block 10, and a card slot corresponding to the card block 10 is provided on the outer wall of the plug plate 5. Specifically, the plug plate 5 is inserted into the slot on the support plate 2, and the flip plate 8 is released. At this time, the rotating rod 7 prompts the flip plate 8 to drive the card block 10 to snap into the card slot on the plug plate 5 through the torsion force of the torsion spring 9 to fix the plug plate; the support plate 2 is provided with two symmetrically arranged grooves on one side close to the probe body, and the two grooves are fixedly connected with a slide bar 11, and two sliders 12 are slidably sleeved on the slide bar 11, and an elastic member 13 is fixedly connected between the two sliders 12, and the elastic member 13 is sleeved on the slide bar 11. One side of the slider 12 The end is rotatably connected with a traction rod 14, and the end of the traction rod 14 away from the slider 12 is rotatably connected with a pressure plate 15. Specifically, the probe body 1 will fit the pressure plate 15 to drive the traction rod 14 to push the slider 12 to slide on the slide rod 11. At this time, the two sliders 12 will stretch the elastic member 13. After installation, the resilience of the elastic member 13 will prompt the pressure plate 15 to push the probe body 1 back to achieve the stability of the card block 10 in the card slot on the plug plate 5; a rotating groove is provided on the connecting plate 3, and a motor 18 is fixedly connected to one side of the connecting plate 3. A threaded rod 19 is fixedly connected to the output end of the motor 18. The threaded rod 19 is rotatably connected to the inner wall of the rotating groove. The threaded rod 19 is positioned at The thread rotation directions on both sides of the center point of the horizontal axial section in the rotating groove are oppositely arranged, and both ends of the threaded rod 19 are threadedly sleeved with adjustment plates 20, one end of the adjustment plate 20 is rotatably connected to a swing plate 21, and one side of the support plate 2 is fixedly connected to a positioning plate 22, and one end of the swing plate 21 is rotatably connected to the positioning plate 22. Specifically, the motor 18 can drive the threaded rod 19 to rotate in the rotating groove. At this time, the two adjustment plates 20 threadedly sleeved thereon will move relative to each other to realize the movement of the swing plate 21. At this time, the swing plate 21 will push the positioning plate 22 to realize the position adjustment of the support plate 2, thereby realizing the spacing adjustment between the probe body 1 and the pipeline.

[0022] In this embodiment, the four corners of the mounting plate 4 are provided with assembly holes, and fixing bolts 16 are inserted into the assembly holes to facilitate the installation of the support plate 2; the side of the pressure plate 15 close to the probe body 1 is provided with multiple anti-slip grooves arranged in an inclined manner to increase the friction force during pressure and improve stability; a pressing plate 17 is fixedly connected to one end of the flip plate 8, and a rubber plate is fixedly connected to the pressing plate 17 to facilitate pressing the flip plate 8; the elastic member 13 is a spring with high acquisition degree; a stop groove is provided on the inner side wall of the rotating groove, and a stop rod 23 is fixedly connected in the stop groove, and one end of the adjustment plate 20 is slidably sleeved on the stop rod 23 to provide limited support for the adjustment plate 20.

[0023] Working principle: during installation, pressing the two flip plates 8 drives the rotating rod 7 to rotate in the slot on the bearing plate 6, then inserting the plug plate 5 on the probe body 1 into the slot on the supporting plate 2, and releasing the flip plate 8. At this time, the rotating rod 7 drives the flip plate 8 to drive the card block 10 to be inserted into the card slot on the plug plate 5 through the torsion force of the torsion spring 9 to fix the plug plate. During installation, the probe body 1 will fit the pressure plate 15, thereby driving the traction rod 14 to push the slider 12 to slide on the slide rod 11. At this time, the two sliders 12 will stretch the elastic member 13. After installation, the pressure plate 15 is pushed back by the resilience of the elastic member 13 to achieve the stability of the card block 10 in the card slot on the plug plate 5. Starting the motor 18 can drive the threaded rod 19 to rotate in the rotating groove. At this time, the two adjusting plates 20 threadedly sleeved thereon will move relatively to achieve the movement of the swing plate 21. The swing plate 21 will push the positioning plate 22 at this time to achieve the position adjustment of the supporting plate 2, thereby achieving the spacing adjustment between the probe body 1 and the pipeline.

[0024] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A pulsed eddy current probe device for detecting small pipe welds, comprising a probe body (1) and a support plate (2), characterized in that: A connecting plate (3) is provided on one side of the bottom end of the support plate (2), one end of the connecting plate (3) is fixedly connected to a mounting plate (4), one side of the probe body (1) is fixedly connected to an inserting plate (5), a slot corresponding to the inserting plate (5) is provided on the support plate (2), one side of the support plate (2) is fixedly connected to two symmetrically arranged bearing plates (6), one end of each of the two bearing plates (6) is provided with a slot, a rotating rod (7) is rotatably connected in the slot, and a fixed sleeve is provided on the rotating rod (7). A flip plate (8) is connected, and both ends of the rotating rod (7) are sleeved with torsion springs (9), and the two ends of the torsion spring (9) are respectively fixedly connected to the outer wall and the slot of the flip plate (8), and one end of the flip plate (8) is fixedly connected with a clamping block (10), and the outer wall of the plug plate (5) is provided with a clamping groove corresponding to the clamping block (10), and the support plate (2) is provided with two symmetrically arranged grooves on one side close to the probe body, and the two grooves are fixedly connected with a sliding rod (11), and the sliding rod (11) slides on Two sliders (12) are sleeved, an elastic member (13) is fixedly connected between the two sliders (12), the elastic member (13) is sleeved on the slide bar (11), one end of the slider (12) is rotatably connected to a traction rod (14), the end of the traction rod (14) away from the slider (12) is rotatably connected to a pressure plate (15), a rotation groove is provided on the connecting plate (3), one side of the connecting plate (3) is fixedly connected to a motor (18), and the output end of the motor (18) is fixedly connected to A threaded rod (19) is connected, the threaded rod (19) is rotatably connected to the inner wall of the rotating groove, the threaded directions of the threaded rod (19) on both sides of the center point of the horizontal axial section in the rotating groove are opposite, both ends of the threaded rod (19) are threadedly sleeved with an adjustment plate (20), one end of the adjustment plate (20) is rotatably connected to a swing plate (21), one side of the support plate (2) is fixedly connected to a positioning plate (22), and one end of the swing plate (21) is rotatably connected to the positioning plate (22).

2. A pulsed eddy current probe device for small pipe weld detection according to claim 1, characterized in that: The four corners of the mounting plate (4) are each provided with an assembly hole, and fixing bolts (16) are inserted into the assembly holes.

3. The pulsed eddy current probe device for small pipe weld detection according to claim 1 is characterized in that: A side of the pressure plate (15) close to the probe body (1) is provided with a plurality of anti-slip grooves arranged in an inclined manner.

4. The pulsed eddy current probe device for small pipe weld detection according to claim 1 is characterized in that: A pressing plate (17) is fixedly connected to one end of the flip plate (8), and a rubber plate is fixedly connected to the pressing plate (17).

5. The pulsed eddy current probe device for small pipe weld detection according to claim 1 is characterized in that: The elastic member (13) is a spring.

6. The pulsed eddy current probe device for small pipe weld detection according to claim 1 is characterized in that: A stop groove is provided on the inner side wall of the rotating groove, a stop rod (23) is fixedly connected in the stop groove, and one end of the adjustment plate (20) is slidably sleeved on the stop rod (23).

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