Pipe inner and outer wall flaw detection device with form switching structure

Abstract

The utility model relates to the technical field of pipe detection, and discloses a pipe inner and outer wall flaw detection device with a form switching structure, which comprises a clamping seat body, a turning plate is arranged on the inner side of the clamping seat body, a groove is formed in the outer wall of the clamping seat body, and a rotating shaft is rotatably connected to the inner wall of the clamping seat body. The outer side of the rotating shaft is fixedly connected with a rotating wheel and a first bevel gear. The pipe inner and outer wall flaw detection device with the form switching structure can flexibly switch internal and external flaw detection forms according to requirements, can accurately detect tiny cracks and sand holes on the inner wall of a pipe and damage to the outer wall caused by environmental erosion and external force collision, thoroughly eliminates detection blind areas which are difficult to touch by traditional flaw detection equipment, and improves the detection efficiency. And the bevel gear I, the motor and the bevel gear II form a driving structure, and the driving device moves along the pipe and can be driven to perform flaw detection along the pipe, so that the manpower is saved.

Description

Technical Field

[0001] This utility model relates to the field of pipe testing technology, specifically a device for detecting flaws in the inner and outer walls of pipes with a shape-switching structure. Background Technology

[0002] In industries such as petrochemicals, construction, and energy transmission, pipes are widely used in critical processes such as material handling and structural support. During long-term use, pipes are susceptible to various defects such as cracks, pinholes, and wear due to corrosion from the internal transported media, erosion from external environmental factors, and the effects of various mechanical stresses. If these defects are not detected in time, they may lead to serious safety accidents such as pipe leaks and ruptures, resulting in huge economic losses and potential casualties. To ensure the quality and safety of pipes, flaw detection has become an essential step.

[0003] However, some conventional flaw detection equipment only inspects the outer wall of pipes, and often cannot effectively detect defects on the inner wall of pipes. Therefore, a device for flaw detection of the inner and outer walls of pipes with a shape switching structure is proposed.

[0004] Chinese Utility Model Patent Publication No. CN 216900387 U discloses an ultrasonic flaw detection device for pipe flaw detection. This device uses a second drive motor to rotate a threaded rod, adjusting a movable support rod. The rotation of the bidirectional screw changes the distance between two first sliding blocks, facilitating adjustment of the ultrasonic probe according to the pipe size. The second sliding block is slidably connected to a fixed rod, ensuring the horizontal movement of the movable support rod. However, this ultrasonic flaw detection device can only detect flaws from the outside of the pipe, not from the inside, resulting in a blind spot and limitations. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a device for detecting flaws in the inner and outer walls of pipes with a shape switching structure, which can effectively solve the problems in the prior art.

[0006] The technical solution adopted by this utility model is as follows: a device for inspecting the inner and outer walls of pipes with a shape switching structure, including a clamp body, a flap plate provided on the inner side of the clamp body, a groove provided on the outer wall of the clamp body, a rotating shaft rotatably connected to the inner wall of the clamp body, a rotating wheel and a bevel gear one fixedly connected to the outer side of the rotating shaft, a motor fixedly connected to the inner wall of the clamp body, a bevel gear two fixedly connected to the output end of the motor, a lifting lug and a fixing lug fixedly connected to the upper end of the clamp body, and a fixing hole provided on the inner wall of the clamp body. The clamp body, flap plate, groove, rotating shaft, rotating wheel, bevel gear one, motor, bevel gear two, lifting lug, fixing lug and fixing hole together form a clamp assembly one. A clamp assembly two is provided on the side of clamp assembly one near the flap plate, and a locking bolt is provided between clamp assembly one and clamp assembly two.

[0007] Preferably, the flap and the clamp body are rotatably connected, and the flap's flip angle range is 0° to 180°.

[0008] Using the above technical solution, when the device needs to be placed inside the pipe, it is switched to the built-in use mode. Clamp assembly one folds the flap inward, and clamp assembly two performs the same operation. The locking bolt is inserted into the flap, with the nut of the locking bolt located on the outside of the flap. Clamp assembly one and clamp assembly two are placed inside the pipe. The nut of the locking bolt is rotated to open clamp assembly one and clamp assembly two, moving them in opposite directions along the locking bolt until the rotating wheel is in tight contact with the inner wall of the pipe. At this point, the probe of the ultrasonic flaw detector is inserted into the fixing hole, and the ultrasonic flaw detector is fixed by the fixing lug. The motor is started to drive bevel gear two to rotate. This drives the meshing bevel gear one to rotate, causing the rotating wheel to rotate. The drive device moves along the inside of the pipe, and the flaw detection probe performs flaw detection on the pipe along the inner wall. When the device needs to be used on the outside of the pipe, the device is switched to external use mode. Clamp assembly one folds the flap outward, and clamp assembly two does the same operation, covering clamp assembly one and clamp assembly two on the outer wall of the pipe. The clamp assembly one and clamp assembly two are locked and fixed with locking bolts, so that the rotating wheel is in tight contact with the outer wall of the pipe. Starting the motor can drive the device to move along the outside of the pipe, and the flaw detection probe performs flaw detection on the pipe along the outer wall.

[0009] Preferably, the rotating wheel is adapted to the groove, and the outer surface of the rotating wheel is made of fluororubber.

[0010] Through the above technical solution, the roller is adapted to the groove, ensuring that it rolls smoothly and has a stable trajectory within the groove. The outer surface of the roller is made of fluororubber, which has excellent wear resistance, corrosion resistance and good elasticity, which can reduce wear during the rotation of the roller and extend its service life.

[0011] Preferably, the first bevel gear and the second bevel gear are meshed together.

[0012] Through the above technical solution, bevel gear one, motor and bevel gear two form a drive structure. The drive device moves along the pipe and can perform flaw detection along the pipe, saving manpower.

[0013] Preferably, the fixing hole is adapted to the probe of the ultrasonic flaw detector.

[0014] Through the above technical solution, the compatibility between the fixing hole and the ultrasonic flaw detector probe can firmly fix the probe and prevent the probe from becoming loose or shifting during the flaw detection process.

[0015] Preferably, the clamp body has a "C"-shaped arc structure, and the arc range of the clamp body is from one-quarter circle to two-quarter circle.

[0016] Through the above technical solution, the clamp body has a "C"-shaped arc structure with a suitable curvature range, so that the clamp body can be adapted to various specifications of pipes.

[0017] Preferably, the first clamp assembly and the second clamp assembly have symmetrical and identical structures, and the first clamp assembly and the second clamp assembly are locked and fixed by locking bolts.

[0018] Through the above technical solution, the fixture assembly one and fixture assembly two have symmetrical and identical structures, which facilitates production, assembly and maintenance, and reduces production costs and operational difficulty.

[0019] Compared with the prior art, this utility model provides a device for inspecting the inner and outer walls of pipes with a shape-switching structure, which has the following beneficial effects:

[0020] 1. This device for inspecting the inner and outer walls of pipes with a form-switching structure is equipped with a flip plate with a flip angle range of 0° to 180°. It can flexibly switch the device between internal and external inspection modes according to the needs. In the internal mode, clamp assembly one folds the flip plate inward, and clamp assembly two does the same operation. The locking bolt is inserted into the flip plate, and the nut of the locking bolt is located on the outside of the flip plate. Clamp assembly one and clamp assembly two are placed inside the pipe. The nut of the locking bolt is rotated to open clamp assembly one and clamp assembly two and move them in opposite directions along the locking bolt until the rotating wheel is in close contact with the inner wall of the pipe. At this time, the probe of the ultrasonic flaw detector is inserted into the fixing hole and the ultrasonic flaw detector is fixed by the fixing ear. The motor is started to drive bevel gear two to rotate, thereby driving bevel gear one to rotate, driving the rotating wheel to rotate. The device moves along the pipe inside the pipe, and the flaw detection probe performs flaw detection on the pipe along the inner wall of the pipe.

[0021] 2. This device for detecting internal and external wall flaws in pipes with a form-switching structure, when in external form, clamp assembly one folds the flap outward, and clamp assembly two performs the same operation, covering clamp assembly one and clamp assembly two on the outer wall of the pipe. Clamp assembly one and clamp assembly two are locked and fixed with locking bolts, so that the rotating wheel is in close contact with the outer wall of the pipe. Starting the motor can drive the device to move along the outside of the pipe. The flaw detection probe performs flaw detection on the pipe along the outer wall of the pipe. Whether it is a tiny crack or sand hole in the inner wall of the pipe, or damage to the outer wall caused by environmental erosion or external impact, it can accurately detect it, completely eliminating the detection blind spots that traditional flaw detection equipment cannot reach, comprehensively controlling the quality of the pipe, and greatly reducing the safety hazards caused by missed detection.

[0022] 3. The device for detecting flaws on the inner and outer walls of pipes with a shape-switching structure consists of a bevel gear one, a motor, and a bevel gear two forming a drive structure. The drive device moves along the pipe, which can drive the device to perform flaw detection along the pipe, saving manpower. Attached Figure Description

[0023] Figure 1 This is a structural diagram of the built-in form of this utility model in use.

[0024] Figure 2 This is a structural diagram of the external form of this utility model in use.

[0025] Figure 3 This is an enlarged structural diagram of the external form of this utility model;

[0026] Figure 4 This is an enlarged structural diagram of the built-in form of this utility model;

[0027] Figure 5 This is a schematic diagram showing the disassembled structure of the clamp assembly 1 and the clamp base assembly 2 of this utility model.

[0028] The components include: 1. Clamp body; 2. Flip plate; 3. Groove; 4. Rotating shaft; 5. Rotating wheel; 6. Bevel gear one; 7. Motor; 8. Bevel gear two; 9. Lifting lug; 10. Fixing lug; 11. Fixing hole; 12. Clamp assembly one; 13. Clamp assembly two; 14. Locking bolt; 15. Ultrasonic flaw detector. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1: As Figure 1-5 As shown, the present invention provides a device for inspecting the inner and outer walls of pipes with a shape-switching structure, including a clamp body 1, a flap 2 provided on the inner side of the clamp body 1, a groove 3 provided on the outer wall of the clamp body 1, a rotating shaft 4 rotatably connected to the inner wall of the clamp body 1, a rotating wheel 5 and a bevel gear 6 fixedly connected to the outer side of the rotating shaft 4, a motor 7 fixedly connected to the inner wall of the clamp body 1, a bevel gear 8 fixedly connected to the output end of the motor 7, a lifting lug 9 and a fixing lug 10 fixedly connected to the upper end of the clamp body 1, and a fixing hole 11 provided on the inner wall of the clamp body 1. The clamp body 1, flap 2, groove 3, rotating shaft 4, rotating wheel 5, bevel gear 6, motor 7, bevel gear 8, lifting lug 9, fixing lug 10 and fixing hole 11 together form a clamp assembly 12. A clamp assembly 23 is provided on the side of the clamp assembly 12 near the flap 2, and a locking bolt 14 is provided between the clamp assembly 12 and the clamp assembly 2.

[0031] Specifically, the flap 2 and the clamp body 1 are rotatably connected, and the flap 2's rotation angle range is 0° to 180°. The advantage is that when the device needs to be placed inside the pipe, it is switched to the built-in use state. Clamp assembly one 12 folds the flap 2 inward, and clamp assembly two 13 performs the same operation. The locking bolt 14 is inserted into the flap 2, with the nut of the locking bolt 14 located on the outside of the flap 2. Clamp assembly one 12 and clamp assembly two 13 are placed inside the pipe. The nut of the locking bolt 14 is rotated to open clamp assembly one 12 and clamp assembly two 13, moving them in the opposite direction along the locking bolt 14 until the rotating wheel 5 is in tight contact with the inner wall of the pipe. At this point, the probe of the ultrasonic flaw detector 15 is inserted into the fixing hole 11, and the ultrasonic flaw detector 15 is fixed by the fixing lug 10. The motor 7 is started to drive the bevel gear. The rotation of the second component 8 drives the meshing bevel gear 6 to rotate, which in turn drives the rotating wheel 5 to rotate. The drive device moves along the inside of the pipe, and the flaw detection probe performs flaw detection on the pipe along the inner wall. When the device needs to be used outside the pipe, the device is switched to external use mode. The clamp assembly 12 folds the flap 2 outward, and the clamp assembly 2 does the same operation, covering the clamp assembly 12 and clamp assembly 2 13 on the outer wall of the pipe. The clamp assembly 12 and clamp assembly 2 13 are locked and fixed with the locking bolt 14, so that the rotating wheel 5 is in close contact with the outer wall of the pipe. Starting the motor 7 can drive the device to move along the outside of the pipe, and the flaw detection probe performs flaw detection on the pipe along the outer wall.

[0032] Specifically, the roller 5 is adapted to the groove 3, and the outer surface of the roller 5 is made of fluororubber. The advantages are that the adaptation of the roller 5 to the groove 3 ensures smooth rolling and stable trajectory within the groove 3, and the use of fluororubber for the outer surface of the roller 5 provides excellent wear resistance, corrosion resistance, and good elasticity, reducing wear during rotation and extending its service life.

[0033] Example 2: Figure 2-5 As shown, this is an improvement on the previous embodiment.

[0034] Specifically, bevel gear 6 and bevel gear 8 are meshed together. The advantage is that bevel gear 6, motor 7, and bevel gear 8 form a drive structure, allowing the drive device to move along the pipe and perform flaw detection along the pipe, thus saving manpower.

[0035] Specifically, the fixing hole 11 is compatible with the probe of the ultrasonic flaw detector 15. The advantage is that the compatibility between the fixing hole 11 and the probe of the ultrasonic flaw detector 15 can firmly fix the probe and prevent the probe from becoming loose or shifting during the flaw detection process.

[0036] Specifically, the clamp body 1 has a "C"-shaped arc structure, and the arc range of the clamp body 1 is from one-quarter circle to two-quarter circle. The advantage is that the clamp body 1 has a "C"-shaped arc structure and a suitable arc range, which allows the clamp body 1 to be adapted to various specifications of pipes.

[0037] Specifically, fixture assembly 12 and fixture assembly 2 13 have symmetrical and identical structures, and are locked together by locking bolts 14. The advantage is that the symmetrical and identical structures of fixture assembly 12 and fixture assembly 2 13 facilitate manufacturing, assembly, and maintenance, reducing production costs and operational complexity.

[0038] Working principle: When the device needs to be placed inside the pipe, switch the device to the built-in use mode. Clamp assembly 12 folds the flap 2 inward, and clamp assembly 2 performs the same operation. Insert the locking bolt 14 into the flap 2, with the nut of the locking bolt 14 located on the outside of the flap 2. Place clamp assembly 12 and clamp assembly 2 into the pipe. Rotate the nut of the locking bolt 14 to open clamp assembly 12 and clamp assembly 2, moving them in opposite directions along the locking bolt 14 until the rotating wheel 5 is in tight contact with the inner wall of the pipe. At this time, insert the probe of the ultrasonic flaw detector 15 into the fixing hole 11 and fix the ultrasonic flaw detector 15 through the fixing lug 10. Start the motor 7 to drive... The rotation of bevel gear 28 drives the meshing bevel gear 16 to rotate, which in turn drives the rotating wheel 5 to rotate. The drive device moves along the inside of the pipe, and the flaw detection probe performs flaw detection on the pipe along the inner wall. When the device needs to be placed outside the pipe, the device is switched to external use mode. Clamp assembly 12 folds the flap 2 outward, and clamp assembly 23 does the same operation, covering clamp assembly 12 and clamp assembly 23 on the outer wall of the pipe. The clamp assembly 12 and clamp assembly 23 are locked and fixed with locking bolt 14, so that the rotating wheel 5 is in close contact with the outer wall of the pipe. Starting motor 7 can drive the device to move along the outside of the pipe, and the flaw detection probe performs flaw detection on the pipe along the outer wall.

[0039] 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 device for inspecting the inner and outer walls of pipes with a shape-switching structure, comprising a clamp body (1), characterized in that: The clamp body (1) has a flap (2) on its inner side, a groove (3) on its outer wall, a rotating shaft (4) rotatably connected to the inner wall of the clamp body (1), a rotating wheel (5) and a bevel gear (6) fixedly connected to the outer side of the rotating shaft (4), a motor (7) fixedly connected to the inner wall of the clamp body (1), a bevel gear (8) fixedly connected to the output end of the motor (7), a lifting lug (9) and a fixing lug (10) fixedly connected to the upper end of the clamp body (1), and a fixing hole (11) on the inner wall of the clamp body (1). The clamp body (1), the flip plate (2), the groove (3), the rotating shaft (4), the rotating wheel (5), the first bevel gear (6), the motor (7), the second bevel gear (8), the lifting lug (9), the fixing lug (10), and the fixing hole (11) together form a clamp assembly one (12). A clamp assembly two (13) is provided on the side of the clamp assembly one (12) near the flip plate (2). A locking bolt (14) is provided between the clamp assembly one (12) and the clamp assembly two (13). An ultrasonic flaw detector (15) is fixedly connected to the upper end of the fixing lug (10).

2. The device for detecting flaws in the inner and outer walls of pipes with a shape-switching structure according to claim 1, characterized in that: The flap (2) is rotatably connected to the clamp body (1), and the flap (2) has a flip angle range of 0° to 180°.

3. The device for detecting flaws in the inner and outer walls of pipes with a shape-switching structure according to claim 1, characterized in that: The rotating wheel (5) is adapted to the groove (3), and the outer surface of the rotating wheel (5) is made of fluororubber.

4. The device for detecting flaws in the inner and outer walls of pipes with a shape-switching structure according to claim 1, characterized in that: The first bevel gear (6) and the second bevel gear (8) are meshed together.

5. The device for detecting flaws in the inner and outer walls of pipes with a shape-switching structure according to claim 1, characterized in that: The fixing hole (11) is compatible with the probe of the ultrasonic flaw detector (15).

6. The device for detecting flaws in the inner and outer walls of pipes with a shape-switching structure according to claim 1, characterized in that: The clamp body (1) has a "C"-shaped arc structure, and the arc range of the clamp body (1) is from one-quarter circle to two-quarter circle.

7. The device for detecting flaws in the inner and outer walls of pipes with a shape-switching structure according to claim 1, characterized in that: The first clamp assembly (12) and the second clamp assembly (13) have the same symmetrical structure and are locked together by locking bolts (14).

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