Phased array transverse defect scanning auxiliary device

Abstract

The utility model relates to the technical field of boiler pipeline welding seam detection, in particular to a phased array transverse defect scanning auxiliary device which comprises a plurality of guide rail sections and a clamping trolley, the guide rail sections are connected end to end, and a flexible connecting structure is arranged between every two guide rail sections. A connecting piece used for being connected with a guide rail section is arranged in the middle of the clamping trolley, a T-shaped sliding groove is formed in the lower surface of the connecting piece, a T-shaped sliding block is fixedly connected to the side, away from the pipeline, of the guide rail, the sliding block slides into the sliding groove in the using process, and the clamping trolley is connected with a clamping piece used for clamping an ultrasonic probe. And the effect that the ultrasonic detection equipment can measure pipelines of various sizes is achieved.

Description

Technical Field

[0001] This application relates to the field of boiler pipe weld inspection technology, and in particular to an auxiliary device for phased array scanning to detect transverse defects. Background Technology

[0002] Transverse cracks can occur in pipe welds during the installation and operation of boilers in thermal power plants.

[0003] Currently, the main methods for detecting internal and external defects in welds of small-diameter pipes are radiographic testing and ultrasonic testing. However, radiographic testing has drawbacks such as low efficiency, significant influence of the crack detection rate on the radiation angle, and high radiation hazard. Existing ultrasonic testing equipment requires the testing equipment to be wound around the pipe for measurement, necessitating the operator to first fix the guide rail to the pipe and then move the probe along the pipe.

[0004] The existing technical solutions mentioned above have the following drawbacks: the dimensions of the existing guide rails are fixed, and they cannot measure pipes of multiple sizes at the same time. Utility Model Content

[0005] This application provides a phased array scanning auxiliary device for detecting transverse defects, enabling ultrasonic testing equipment to measure pipes of various sizes.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution:

[0007] A phased array scanning auxiliary device for detecting lateral defects includes guide rail sections and a clamping trolley. Multiple guide rail sections are provided and connected end to end. A flexible connecting structure is provided between every two guide rail sections. The middle part of the clamping trolley is provided with a connector for connecting to the guide rail sections. A T-shaped groove is formed on the lower surface of the connector. A T-shaped slider is fixedly connected to the side of the guide rail away from the pipe. When in use, the slider slides into the groove. The clamping trolley is connected to a clamping member for clamping an ultrasonic probe.

[0008] By adopting the above scheme, when pipeline inspection is required, the guide rail section is wrapped around the outside of the pipeline, and then the ultrasonic probe is installed on the clamping device. The clamping trolley is then moved around the guide rail section, so that the ultrasonic probe can circle the pipeline once, thereby realizing pipeline inspection. The operator can increase or decrease the number of guide rail sections to adapt the guide rail to pipelines of different sizes.

[0009] Optionally, the connection structure includes a hook, a hook ring, and a connecting spring. One end of the connecting spring is fixedly connected to the guide rail section, and the other end of the connecting spring is fixedly connected to the hook. The hook ring is fixedly connected to the side of the guide rail section away from the hook.

[0010] By adopting the above solution, when it is necessary to connect two guide rail sections, simply hang the hook on the hook ring, and the spring can cause a certain bending between the two trolleys, so that the guide rail section can better adapt to trolleys of different sizes.

[0011] Optionally, a rubber pad is provided on the side of the guide rail section that contacts the pipe.

[0012] By adopting the above solution, the friction between the guide rail section and the pipe is increased, making it less likely for the guide rail section to move during use, and the rubber pad can undergo elastic deformation, thereby increasing the contact area between the guide rail and the pipe section.

[0013] Optionally, a clamping plate is connected inside the slide groove. The clamping plate is located inside the slide groove on the side opposite to the clamping trolley. An elastic element is fixedly connected to the clamping plate. The end of the elastic element opposite to the clamping plate is fixedly connected inside the slide groove. When the slider slides into the slide groove, one side surface of the slider abuts against the clamping plate, and there is space inside the slide groove for the elastic element to deform.

[0014] By adopting the above solution, since the pipe is circular and there is a certain angle between the two guide rail sections, the connecting part may be obstructed when moving between the two guide rail sections. By setting an elastic element and a pressure plate in the slide groove, when the connecting part moves between the two guide rail sections, the pressure plate contacts the two sliders, thereby compressing the elastic element, increasing the available space in the slide groove, and allowing the connecting part to pass smoothly between the two guide rail sections. Subsequently, the elastic element rebounds, causing the pressure plate to abut against the surface of the slider, allowing the slider to slide smoothly in the slide groove without loosening.

[0015] Optionally, the edge of the clamping plate is inclined, and the inclined surface faces away from the elastic element, and the edge of the slider is inclined, and the inclined surface faces closer to the guide rail section.

[0016] By adopting the above scheme, when the edge of the pressure plate contacts the edge of the slider, the pressure plate can move more smoothly in the direction of compressing the spring.

[0017] Optionally, the clamping trolley is rotatably connected to wheels at both ends.

[0018] By adopting the above scheme, wheels are rotatably connected to both ends of the clamping trolley.

[0019] Optionally, the clamping trolley includes a left plate and a right plate. A rack is fixedly connected to the left plate near the right plate, and a rack is fixedly connected to the right plate near the left plate. A main gear is provided between the two racks. The main gear meshes with both racks simultaneously. The main gear is rotatably connected to a limiting sleeve, which is sleeved on the outside of the two racks, so that the two racks can only slide along the rack direction. The limiting sleeve is rotatably connected to two auxiliary gears, which are located on opposite sides of the main gear and mesh with both racks simultaneously.

[0020] By adopting the above scheme, the main gear can be rotated to drive the rack to move, thereby moving the left and right plates away from or closer to each other. This allows the ultrasonic probes mounted on the two clamping parts to move away from or closer to each other, thus enabling the ultrasonic probes to detect defects in pipe welds at different distances.

[0021] Optionally, an operating rod is fixedly connected to the clamping member near the clamping trolley. A circular hole is opened on the surface of the clamping trolley, through which the operating rod passes. A spring is sleeved on the outside of the operating rod. One end of the spring is fixedly connected to the clamping trolley, and the other end is fixedly connected to a spring seat. The spring seat is rotatably connected to the operating rod. A toothed ring is fixedly connected to the surface of the clamping trolley near the clamping member. A clamping gear is fixedly connected to the operating rod. When the spring is at its original length, the clamping gear meshes with the toothed ring.

[0022] By adopting the above solution, the operator can press the operating lever to make the clamping gear slide out of the gear ring, and then rotate the operating lever to drive the clamping part and the ultrasonic probe to rotate, thereby adjusting the angle of the ultrasonic probe. After the adjustment is completed, the operating lever is released, the return spring returns, and the clamping gear meshes with the gear ring, thereby fixing the operating lever and preventing the probe from rotating during use.

[0023] Optionally, the clamping member has threaded holes on opposite sides for screws to pass through.

[0024] By adopting the above method, the ultrasonic probe can be fixed to the clamp by passing a screw through the threaded hole.

[0025] In summary, this application has the following technical effects:

[0026] 1. By setting guide rail sections and connecting structures between the guide rail sections, the ultrasonic testing equipment can be used for pipes of various diameters;

[0027] 2. The addition of hooks and hanging rings makes connecting the two guide rail sections more convenient;

[0028] 3. The addition of rubber pads makes the guide rail sections less prone to slippage. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of this application;

[0030] Figure 2 This is a partial structural diagram intended to emphasize the connection structure in this application;

[0031] Figure 3 This is a partial structural diagram intended to emphasize the connection point in this application;

[0032] Figure 4 This is a partial structural diagram intended to emphasize the limiting sleeve in this application;

[0033] Figure 5 This is a partial structural diagram intended to emphasize the clamping component in this application.

[0034] In the diagram, 1. Guide rail section; 11. Slider; 12. Rubber pad; 2. Clamping trolley; 21. Left plate; 22. Right plate; 3. Connecting structure; 31. Connecting spring; 32. Hook; 33. Hook ring; 4. Clamping component; 41. Operating lever; 42. Rebound spring; 421. Spring seat; 43. Gear ring; 44. Clamping gear; 5. Connecting component; 51. Slide groove; 52. Pressure plate; 53. Elastic component; 6. Limiting sleeve; 61. Main gear; 62. Auxiliary gear; 63. Rack. Detailed Implementation

[0035] The present application will be further described in detail below with reference to the accompanying drawings.

[0036] Reference Figure 1 A phased array scanning auxiliary device for detecting lateral defects includes a guide rail section 1 and a clamping trolley 2. Multiple guide rail sections 1 are connected end-to-end, with a flexible connecting structure 3 between each pair of guide rail sections 1. The clamping trolley 2 has a connector 5 in its middle section for connecting to the guide rail sections 1. The lower surface of the connector 5 has a T-shaped groove 51. A T-shaped slider 11 is fixedly connected to the side of the guide rail away from the pipe. During use, the slider 11 slides into the groove 51. The clamping trolley 2 is connected to a clamping member 4 for holding an ultrasonic probe. When pipe inspection is required, the guide rail section 1 is wrapped around the outside of the pipe, and then the ultrasonic probe is mounted on the clamping member 4. The clamping trolley 2 is then moved around the guide rail section 1, allowing the ultrasonic probe to circle the pipe, thus enabling pipe inspection. The operator can adjust the number of guide rail sections 1 to accommodate pipes of different sizes.

[0037] Reference Figure 2 The connecting structure 3 includes a hook 32, a hook ring 33, and a connecting spring 31. One end of the connecting spring 31 is fixedly connected to the guide rail section 1, and the other end is fixedly connected to the hook 32. The hook ring 33 is fixedly connected to the side of the guide rail section 1 opposite to the hook 32. When two guide rail sections 1 need to be connected, simply hang the hook 32 on the hook ring 33. The spring allows for a certain degree of bending between the two trolleys, enabling the guide rail section 1 to better adapt to trolleys of different sizes. A rubber pad 12 is provided on the side of the guide rail section 1 that contacts the pipe, increasing the friction between the guide rail section 1 and the pipe, making it less prone to movement during use. The rubber pad 12 can also undergo elastic deformation, thereby increasing the contact area between the guide rail and the pipe section.

[0038] Reference Figure 3A clamping plate 52 is connected inside the slide groove 51. The clamping plate 52 is located inside the slide groove 51 on the side away from the clamping trolley 2. An elastic element 53 is fixedly connected to the clamping plate 52. The end of the elastic element 53 away from the clamping plate 52 is fixedly connected inside the slide groove 51. The edge of the clamping plate 52 is inclined, and the inclined surface faces the side away from the elastic element 53. The edge of the slider 11 is inclined, and the inclined surface faces the side close to the guide rail section 1. When the slider 11 slides into the slide groove 51, one side surface of the slider 11 abuts against the clamping plate 52, and there is space inside the slide groove 51 for the elastic element 53 to deform. Because the pipe is circular, there is a certain angle between the two guide rail sections 1. When the connecting piece 5 moves between the two guide rail sections 1, it may cause obstruction. An elastic element 53 and a pressure plate 52 are installed in the slide groove 51. When the connecting piece 5 moves between the two guide rail sections 1, the pressure plate 52 contacts the two sliders 11, thereby compressing the elastic element 53. This increases the available space in the slide groove 51, allowing the connecting piece 5 to pass smoothly between the two guide rail sections 1. Subsequently, the elastic element 53 rebounds, causing the pressure plate 52 to abut against the surface of the slider 11, allowing the slider 11 to slide smoothly within the slide groove 51 without loosening. Furthermore, the beveled edges of the pressure plate 52 and the slider 11 allow the pressure plate 52 to move more smoothly towards the compression spring when it contacts the slider 11.

[0039] Reference Figure 1 and Figure 4 The clamping trolley 2 has wheels rotatably connected to both ends. The clamping trolley 2 includes a left plate 21 and a right plate 22. A rack 63 is fixedly connected to the side of the left plate 21 near the right plate 22, and a rack 63 is fixedly connected to the side of the right plate 22 near the left plate 21. A main gear 61 is provided between the two racks 63, and the main gear 61 meshes with both racks 63. The main gear 61 is rotatably connected to a limiting sleeve 6, which is fitted on the outside of the two racks 63, so that the two racks 63 can only slide along the direction of the racks 63. The limiting sleeve 6 is rotatably connected to two auxiliary gears 62, which are located on opposite sides of the main gear 61, and the auxiliary gears 62 mesh with both racks 63. The operator can rotate the main gear 61 to drive the rack 63 to move, thereby moving the left plate 21 and the right plate 22 away from each other or closer together, thereby moving the ultrasonic probes mounted on the two clamping parts 4 away from each other or closer together, thus enabling the ultrasonic probes to detect defects in the pipe weld at different distances.

[0040] Reference Figure 5An operating rod 41 is fixedly connected to the side of the clamping member 4 near the clamping carriage 2. A round hole is opened on the surface of the clamping carriage 2, through which the operating rod 41 passes. A spring 42 is sleeved on the outside of the operating rod 41. One end of the spring 42 is fixedly connected to the clamping carriage 2, and the other end of the spring 42 is fixedly connected to a spring seat 421. The spring seat 421 is rotatably connected to the operating rod 41. A toothed ring 43 is fixedly connected to the surface of the clamping carriage 2 near the clamping member 4. A clamping gear 44 is fixedly connected to the operating rod 41. When the spring 42 is at its original length, the clamping gear 44 meshes with the toothed ring 43. The operator can press the operating lever 41 to slide the clamping gear 44 out of the gear ring 43, and then rotate the operating lever 41 to drive the clamping member 4 and the ultrasonic probe to rotate, thereby adjusting the angle of the ultrasonic probe. After adjustment, the operator releases the operating lever 41, and the return spring 42 returns, causing the clamping gear 44 to mesh with the gear ring 43, thereby fixing the operating lever 41 and preventing the probe from rotating during use. The clamping member 4 has threaded holes on opposite sides for screws to pass through.

[0041] The specific implementation principle of this application is as follows: When it is necessary to inspect the pipeline, the hook 32 connected to one guide rail section 1 is hung on the hook ring 33 of another guide rail section 1, and so on, until all guide rail sections 1 are connected together. Then, the guide rail section 1 is wrapped around the outside of the pipeline, and then the ultrasonic probe is installed on the clamping member 4. Then, the clamping trolley 2 is moved around the guide rail section 1, so that the ultrasonic probe is wrapped around the pipeline, thereby realizing the inspection of the pipeline. Then, the operator can adjust the distance between the two ultrasonic probes by rotating the main gear 61, and can also adjust the angle of the two ultrasonic probes by pressing and rotating the operating rod 41, so that the ultrasonic inspection is more comprehensive. When it is necessary to inspect pipelines of different sizes, the operator can increase or decrease the number of guide rail sections 1 so that the guide rail can adapt to pipelines of different sizes.

[0042] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. An auxiliary device for phased array scanning of lateral defects, characterized in that: The device includes a guide rail section (1) and a clamping trolley (2). Multiple guide rail sections (1) are provided, and the multiple guide rail sections (1) are connected end to end. A flexible connecting structure (3) is provided between every two guide rail sections (1). A connector (5) for connecting with the guide rail section (1) is provided in the middle part of the clamping trolley (2). A T-shaped groove (51) is provided on the lower surface of the connector (5). A T-shaped slider (11) is fixedly connected on the side of the guide rail away from the pipe. When in use, the slider (11) slides into the groove (51). A clamping member (4) for clamping the ultrasonic probe is connected to the clamping trolley (2).

2. The auxiliary device for phased array scanning of lateral defects according to claim 1, characterized in that: The connecting structure (3) includes a hook (32), a hook ring (33) and a connecting spring (31). One end of the connecting spring (31) is fixedly connected to the guide rail section (1), and the other end of the connecting spring (31) is fixedly connected to the hook (32). The hook ring (33) is fixedly connected to the side of the guide rail section (1) away from the hook (32).

3. The auxiliary device for phased array scanning of lateral defects according to claim 1, characterized in that: The guide rail section (1) has a rubber pad (12) on the side near the pipe.

4. The auxiliary device for phased array scanning of lateral defects according to claim 1, characterized in that: A clamping plate (52) is connected inside the slide groove (51). The clamping plate (52) is located inside the slide groove (51) on the side away from the clamping trolley (2). An elastic element (53) is fixedly connected to the clamping plate (52). One end of the elastic element (53) away from the clamping plate (52) is fixedly connected inside the slide groove (51). When the slider (11) slides into the slide groove (51), one side surface of the slider (11) abuts against the clamping plate (52), and there is enough space inside the slide groove (51) for the elastic element (53) to deform.

5. The phased array scanning auxiliary device for detecting lateral defects according to claim 4, characterized in that: The edge of the clamping plate (52) is inclined and the inclined surface faces away from the elastic member (53), and the edge of the slider (11) is inclined and the inclined surface faces the side closer to the guide rail section (1).

6. The auxiliary device for phased array scanning of lateral defects according to claim 1, characterized in that: The trolley is rotatably connected to wheels at both ends.

7. The auxiliary device for phased array scanning of lateral defects according to claim 1, characterized in that: The clamping trolley (2) includes a left plate (21) and a right plate (22). A rack (63) is fixedly connected to the side of the left plate (21) near the right plate (22), and a rack (63) is fixedly connected to the side of the right plate (22) near the left plate (21). A main gear (61) is provided between the two racks (63). The main gear (61) meshes with both racks (63) at the same time. The main gear (61) is rotatably connected to a limiting sleeve (6). The limiting sleeve (6) is sleeved on the outside of the two racks (63), so that the two racks (63) can only slide along the direction of the racks (63). The limiting sleeve (6) is rotatably connected to two auxiliary gears (62). The auxiliary gears (62) are located on opposite sides of the main gear (61), and the auxiliary gears (62) mesh with both racks (63) at the same time.

8. The phased array scanning auxiliary device for detecting lateral defects according to claim 1, characterized in that: The clamping member (4) is fixedly connected to an operating rod (41) on the side near the clamping trolley (2). A round hole is provided on the surface of the clamping trolley (2), through which the operating rod (41) passes. A spring (42) is sleeved on the outside of the operating rod (41). One end of the spring (42) is fixedly connected to the clamping trolley (2), and the other end of the spring (42) is fixedly connected to a spring seat (421). The spring seat (421) is rotatably connected to the operating rod (41). A toothed ring (43) is fixedly connected to the surface of the clamping trolley (2) near the clamping member (4). A clamping gear (44) is fixedly connected to the operating rod (41). When the spring (42) is at its original length, the clamping gear (44) meshes with the toothed ring (43).

9. The auxiliary device for phased array scanning of lateral defects according to claim 1, characterized in that: The clamping member (4) has through holes on both sides for screws to pass through.

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