A kind of auxiliary tooling and method for ultrasonic detection of pipeline annular seam

Abstract

The invention discloses an auxiliary tooling and method for ultrasonic detection of pipeline annular seams, and relates to the technical field of ultrasonic detection, comprising a bottom plate, a top plate and an ultrasonic detection ring, wherein the top of the top plate is symmetrically provided with sliding grooves; the invention pulls a pull rod to drive a limit pin to slide inside a circular hole, and the limit pin drives the circular ring to move together during the sliding process, and the circular ring squeezes a reset spring toward the inner side of a fixing frame during the movement, and after being squeezed to a certain extent, the limit pin will move away from the limit socket, and then the ultrasonic detection ring and the plug block will be taken out of the slot, and then a new ultrasonic detection ring and the plug block will be inserted into the slot, and then the pull rod will be released after the insertion, and the rebound force of the reset spring after the release will bounce the limit pin into the limit socket, thereby improving the efficiency of disassembly and replacement of the ultrasonic detection ring, effectively avoiding the need to completely replace the equipment when the ultrasonic detection ring fails, and reducing the maintenance cost.

Description

Technical Field

[0001] The invention relates to the technical field of ultrasonic detection, and in particular to an auxiliary tooling and method for ultrasonic detection of pipeline annular seams. Background Art

[0002] Pipelines are often used to transport liquids such as water, oil, and chemicals. For example, urban water supply systems use pipelines to transport water from water sources to residential and industrial users; the oil and gas industry uses pipelines to transport crude oil or natural gas from production areas to processing plants or markets. Pipelines often have welds after welding, and ultrasonic testing of pipeline circumferential seams is a non-destructive testing method used to detect internal defects in pipeline welds. Ultrasonic probes emit high-frequency sound waves and identify defects such as unevenness, cracks, and inclusions in welds through echoes reflected back by the pipe material. During the detection process, ultrasonic waves will propagate along the pipe wall, and the location and nature of the defects will be determined based on the intensity and time of the echo. In recent years, ultrasonic technology has been widely used in the detection of pipeline welded joints.

[0003] In the prior art, for example, the Chinese patent number CN116626175A, "A nondestructive testing device for engineering pipelines", includes a first fixing ring and a second fixing ring, which are rotatably connected by hinges, and the surfaces of the first fixing ring and the second fixing ring are both provided with fixing mechanisms, and the front surfaces of the first fixing ring and the second fixing ring are both provided with limiting grooves. The nondestructive testing device for engineering pipelines, by putting the first fixing ring and the second fixing ring on the surface of the pipeline to be tested, makes the detection head of the ultrasonic pipeline detector body face the weld, rotates the fixing bolt to drive the clamping plate to clamp the pipeline, and then pushes the handle to drive the ultrasonic pipeline detector body to slide along the track of the limiting groove, so as to avoid the ultrasonic pipeline detector body from leaving the weld position when moving. When a defect is found, pressing the button downward can drive the connecting tube to move downward, so that the marker pen can contact one side of the defect position, and then the marker pen can be used to quickly mark the defect. However, the detection device does not have a disassembly mechanism for the ultrasonic pipeline detector body, which makes it very difficult to repair the ultrasonic pipeline detector body when it fails, and even requires complete replacement of the equipment, which not only increases the maintenance cost but also creates a burden on operating expenses, so improvements are needed. Summary of the invention

[0004] The object of the present invention is to provide an auxiliary tool and method for ultrasonic detection of pipeline annular seams, so as to solve the problem that the ultrasonic pipeline detector body needs to be completely replaced when a failure occurs in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an auxiliary tooling for ultrasonic detection of pipeline annular seams, comprising a bottom plate, a top plate and an ultrasonic detection ring, the top of the top plate is symmetrically provided with sliding grooves, the inside of the sliding groove is slidably connected with a slider, the top of the slider is provided with a slot, the inside of the slot is slidably connected with an insert block, a limited position hole is provided between the insert block and one side of the slider, a fixing frame is fixedly installed on the side of the slider close to the limiting hole, a circular hole is penetrated through the side of the fixing frame away from the slider, a limited position pin is slidably connected inside the circular hole, a circular ring is fixedly installed on the outer wall of the limiting pin, a pull rod is fixedly installed on the end of the limiting pin away from the circular hole, a reset spring is sleeved on the outer wall of the limiting pin, and a push handle is symmetrically fixedly installed on the top of the bottom plate.

[0006] Preferably, the plug block is fixedly connected to the ultrasonic detection ring.

[0007] Preferably, one end of the return spring is fixedly connected to the ring, and the other end of the return spring is fixedly connected to the fixing frame.

[0008] Preferably, the limit pin is slidably connected to the limit socket, and an anti-slip sleeve is fixedly mounted on the top outer wall of the push handle.

[0009] Preferably, a hydraulic cylinder is symmetrically fixedly mounted on the top of the base plate, a top block is fixedly mounted on the output end of the hydraulic cylinder, and rollers are symmetrically fixedly mounted on the bottom of the base plate.

[0010] Preferably, a driving motor is fixedly installed on the bottom of the top plate, a mounting plate is fixedly installed on the output end of the driving motor, a fixed shaft 1 is symmetrically fixedly installed on the top of the mounting plate, a connecting rod is rotatably connected to the outer wall of the fixed shaft 1, a fixed plate is fixedly installed on the side of the slider away from the fixed frame, and a fixed shaft 2 is fixedly installed on the top of the fixed plate.

[0011] Preferably, the second fixed shaft is rotationally connected to the connecting rod.

[0012] Preferably, a shell is symmetrically fixedly installed on the top of the base plate, a square plate is slidably connected to the inside of the shell, a gear rod is fixedly installed on the top of the square plate, a baffle frame is fixedly installed on the top of the shell, a vertical plate is fixedly installed on the top of the base plate, a dual-axis motor is fixedly installed inside the vertical plate, and a gear is fixedly installed on the output end of the dual-axis motor.

[0013] Preferably, the baffle frame is slidably connected to the gear rod, the gear and the gear rod are meshed with each other, and the gear rod and the top plate are fixedly connected.

[0014] A method for using an auxiliary tool for ultrasonic detection of pipeline annular seams, comprising the following steps:

[0015] S1: First, move the device to the bottom of the pipeline to be inspected, and then start the four sets of hydraulic cylinders. When the four sets of hydraulic cylinders are working, they will drive the four sets of top blocks to move downward. After moving a certain distance, the four sets of top blocks will lift the device up;

[0016] S2: After lifting, start the dual-axis motor. When the dual-axis motor is working, it will drive the two sets of gears to rotate. During the rotation process, the two sets of gears will drive the two sets of gear rods meshing with each other to move upward inside the two sets of shells. During the upward movement of the two sets of gear rods, the top plate and the two sets of ultrasonic detection rings will move upward together. After moving a certain distance, the dual-axis motor will be turned off;

[0017] S3: After the height adjustment is completed, the driving motor is started again. When the driving motor is working, it will drive the mounting plate to rotate. During the rotation process, the mounting plate will drive the two sets of fixed shafts one to rotate together. Since the two sets of fixed shafts one are rotatably connected with the two sets of connecting rods, and the two sets of fixed shafts one will cause the two sets of connecting rods to rotate on the outer walls of the two sets of fixed shafts two during the rotation process, the two sets of connecting rods will cause the two sets of fixed plates to drive the two sets of sliders to slide inside the two sets of slide grooves toward the location of the pipeline during the rotation process. During the sliding process, the two sets of sliders will drive the two sets of ultrasonic detection rings to move together. After moving a certain distance, the two sets of ultrasonic detection rings will be tightly attached to the outer wall of the pipeline;

[0018] S4: After close fitting, two sets of ultrasonic testing rings can be used to detect the annular seam of the pipeline;

[0019] S5: When the ultrasonic detection ring fails and needs to be disassembled and replaced, the pull rod is pulled to drive the limit pin to slide inside the round hole. The limit pin will drive the round ring to move during the sliding process. The round ring will squeeze the reset spring toward the inside of the fixed frame during the movement. After being squeezed to a certain extent, the limit pin will move away from the limit socket. After moving away, the ultrasonic detection ring and the plug block are taken out of the slot, and then the new ultrasonic detection ring and the plug block are inserted into the slot. After insertion, the pull rod is released. After release, the rebound force of the reset spring will bounce the limit pin into the limit socket.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In the present invention, the pull rod is pulled to drive the limit pin to slide inside the circular hole. The limit pin will drive the circular ring to move together during the sliding process. The circular ring will squeeze the reset spring toward the inner side of the fixed frame during the movement. After being squeezed to a certain extent, the limit pin will move away from the limit socket. After moving away, the ultrasonic detection ring and the plug block are taken out from the slot. After taking them out, a new ultrasonic detection ring and the plug block are inserted into the slot. After insertion, the pull rod is released. After release, the rebound force of the reset spring will bounce the limit pin into the limit socket, thereby improving the efficiency of disassembly and replacement of the ultrasonic detection ring, effectively avoiding the need to completely replace the equipment when the ultrasonic detection ring fails, and reducing the maintenance cost.

[0022] 2. In the present invention, by starting the driving motor, the driving motor will drive the mounting plate to rotate when working, and the mounting plate will drive the two sets of fixed shafts one to rotate together during the rotation process. Since the two sets of fixed shafts one are rotatably connected with the two sets of connecting rods, and the two sets of fixed shafts one will cause the two sets of connecting rods to rotate on the outer walls of the two sets of fixed shafts two during the rotation process, the two sets of connecting rods will cause the two sets of fixed plates to drive the two sets of slide blocks to slide inside the two sets of slide grooves toward the location of the pipeline during the rotation process. The two sets of slide blocks will drive the two sets of ultrasonic detection rings to move together during the sliding process. After moving a certain distance, the two sets of ultrasonic detection rings will be close to the outer wall of the pipeline, thereby improving the accuracy and reliability of the detection. At the same time, the automated design reduces the need for manual operation and improves work efficiency and consistency.

[0023] 3. In the present invention, by starting the dual-axis motor, the dual-axis motor will drive the two sets of gears to rotate when working. During the rotation process, the two sets of gears will drive the two sets of gear rods meshing with each other to move upward inside the two sets of shells. During the upward movement, the two sets of gear rods will drive the top plate and the two sets of ultrasonic detection rings to move upward together. After moving a certain distance, the dual-axis motor can be turned off. Through the dual-axis motor and gear transmission system, precise height adjustment is achieved to adapt to different work requirements. At the same time, automatic adjustment reduces the need for manual operation, improves work efficiency and detection accuracy, and the gears and gear rods driven by the dual-axis motor ensure the stability and synchronization of the height adjustment process, avoiding errors caused by asynchrony. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of an auxiliary tooling for ultrasonic detection of pipeline annular seams according to the present invention;

[0025] Figure 2 It is a schematic diagram of a partial explosion structure of an auxiliary tooling for ultrasonic detection of pipeline annular seams of the present invention;

[0026] Figure 3 The invention provides an auxiliary tool for ultrasonic detection of pipeline annular seams Figure 2Enlarged view of point A in the middle;

[0027] Figure 4 It is a schematic diagram of the exploded structure of a pipeline annular seam ultrasonic detection auxiliary tooling of the present invention from a side view;

[0028] Figure 5 The invention provides an auxiliary tool for ultrasonic detection of pipeline annular seams Figure 4 Enlarged view of point B in the middle;

[0029] Figure 6 It is a schematic diagram of the exploded structure of a pipeline annular seam ultrasonic detection auxiliary tooling from a top view according to the present invention;

[0030] Figure 7 The present invention is a schematic diagram of the structure of an auxiliary tooling for ultrasonic detection of annular seams of pipelines viewed from above.

[0031] In the figure: 1. bottom plate; 2. top plate; 3. ultrasonic detection ring; 4. slide groove; 5. slider; 6. slot; 7. plug block; 8. limit socket; 9. fixing frame; 10. round hole; 11. limit latch; 12. round ring; 13. pull rod; 14. reset spring; 15. push handle; 16. anti-slip sleeve; 17. drive motor; 18. mounting plate; 19. fixed axis one; 20. connecting rod; 21. fixed plate; 22. fixed axis two; 23. housing; 24. gear rod; 25. vertical plate; 26. dual-axis motor; 27. gear; 28. baffle frame; 29. ​​square plate; 30. hydraulic cylinder; 31. top block; 32. roller. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example 1: Reference Figure 1-4 and Figure 7As shown: an auxiliary tooling for ultrasonic detection of pipeline annular seams, comprising a bottom plate 1, a top plate 2 and an ultrasonic detection ring 3, a slide groove 4 is symmetrically opened on the top of the top plate 2, a slider 5 is slidably connected inside the slide groove 4, a slot 6 is opened on the top of the slider 5, an insert block 7 is slidably connected inside the slot 6, a limited position plug hole 8 is opened on one side of the insert block 7 and the slider 5, a fixing frame 9 is fixedly installed on the side of the slider 5 close to the limited position plug hole 8, a round hole 10 is penetrated and opened on the side of the fixing frame 9 away from the slider 5, a limited position pin 11 is slidably connected inside the round hole 10, a circular ring 12 is fixedly installed on the outer wall of the limited position pin 11, and the limited position pin 11 is away from the round hole A pull rod 13 is fixedly installed at one end of 10, a reset spring 14 is provided on the outer wall of the limit pin 11, a push handle 15 is symmetrically fixedly installed on the top of the base plate 1, the plug block 7 is fixedly connected to the ultrasonic detection ring 3, one end of the reset spring 14 is fixedly connected to the circular ring 12, the other end of the reset spring 14 is fixedly connected to the fixed frame 9, the limit pin 11 is slidably connected to the limit socket 8, an anti-slip sleeve 16 is fixedly installed on the top outer wall of the push handle 15, a hydraulic cylinder 30 is symmetrically fixedly installed on the top of the base plate 1, a top block 31 is fixedly installed on the output end of the hydraulic cylinder 30, and a roller 32 is symmetrically fixedly installed on the bottom of the base plate 1.

[0034] In this embodiment, by pulling the pull rod 13, the limit pin 11 is driven to slide inside the circular hole 10. During the sliding process, the limit pin 11 will drive the circular ring 12 to move together. During the movement, the circular ring 12 will squeeze the reset spring 14 toward the inner side of the fixing frame 9. After being squeezed to a certain extent, the limit pin 11 will move away from the limit hole 8. After moving away, the ultrasonic detection ring 3 and the plug block 7 are taken out from the slot 6. After taking them out, the new ultrasonic detection ring 3 and the plug block 7 are inserted into the slot 6. After insertion, the pull rod 13 is released. After release, the rebound force of the reset spring 14 will bounce the limit pin 11 into the limit hole 8, thereby improving the disassembly and replacement efficiency of the ultrasonic detection ring 3, effectively avoiding the need to completely replace the equipment when the ultrasonic detection ring 3 fails, and reducing the maintenance cost.

[0035] Example 2: Reference Figure 3-5 As shown, a driving motor 17 is fixedly installed on the bottom of the top plate 2, a mounting plate 18 is fixedly installed on the output end of the driving motor 17, a fixed shaft 19 is symmetrically fixedly installed on the top of the mounting plate 18, and a connecting rod 20 is rotatably connected to the outer wall of the fixed shaft 19, a fixing plate 21 is fixedly installed on the side of the slider 5 away from the fixing frame 9, a fixed shaft 22 is fixedly installed on the top of the fixing plate 21, and the fixed shaft 22 is rotatably connected to the connecting rod 20.

[0036] In this embodiment, by starting the driving motor 17, the driving motor 17 will drive the mounting plate 18 to rotate when working, and the mounting plate 18 will drive the two sets of fixed shafts 19 to rotate together during the rotation process. Since the two sets of fixed shafts 19 are rotatably connected with the two sets of connecting rods 20, and the two sets of fixed shafts 19 will cause the two sets of connecting rods 20 to rotate on the outer walls of the two sets of fixed shafts 22 during the rotation process, the two sets of connecting rods 20 will cause the two sets of fixed plates 21 to drive the two sets of sliders 5 to slide inside the two sets of slide grooves 4 toward the location of the pipeline during the rotation process. The two sets of sliders 5 will drive the two sets of ultrasonic detection rings 3 to move together during the sliding process. After moving a certain distance, the two sets of ultrasonic detection rings 3 will be close to the outer wall of the pipeline, thereby improving the accuracy and reliability of the detection. At the same time, the automated design reduces the need for manual operation and improves work efficiency and consistency.

[0037] Example 3: Reference Figure 6 As shown, a shell 23 is symmetrically fixedly installed on the top of the bottom plate 1, a square plate 29 is slidably connected inside the shell 23, a gear rod 24 is fixedly installed on the top of the square plate 29, a baffle frame 28 is fixedly installed on the top of the shell 23, a vertical plate 25 is fixedly installed on the top of the bottom plate 1, a dual-axis motor 26 is fixedly installed inside the vertical plate 25, a gear 27 is fixedly installed on the output end of the dual-axis motor 26, the baffle frame 28 is slidably connected to the gear rod 24, the gear 27 and the gear rod 24 are meshed with each other, and the gear rod 24 and the top plate 2 are fixedly connected.

[0038] In this embodiment, by starting the dual-axis motor 26, the dual-axis motor 26 will drive the two sets of gears 27 to rotate when working. During the rotation process, the two sets of gears 27 will drive the two sets of gear rods 24 meshing with each other to move upward inside the two sets of shells 23. During the upward movement, the two sets of gear rods 24 will drive the top plate 2 and the two sets of ultrasonic detection rings 3 to move upward together. After moving a certain distance, the dual-axis motor 26 can be turned off. Through the dual-axis motor 26 and the gear 27 transmission system, precise height adjustment is achieved to adapt to different work requirements. At the same time, automatic adjustment reduces the need for manual operation, improves work efficiency and detection accuracy, and the gears 27 and gear rods 24 driven by the dual-axis motor 26 ensure the stability and synchronization of the height adjustment process, avoiding errors caused by asynchrony.

[0039] A method for using an auxiliary tool for ultrasonic detection of pipeline annular seams, comprising the following steps:

[0040] S1: First, move the device to the bottom of the pipeline to be inspected, and then start the four sets of hydraulic cylinders 30. When the four sets of hydraulic cylinders 30 are working, they will drive the four sets of top blocks 31 to move downward. After moving a certain distance, the four sets of top blocks 31 will lift the device;

[0041] S2: After lifting, start the double-axis motor 26. When the double-axis motor 26 is working, it will drive the two sets of gears 27 to rotate. During the rotation process, the two sets of gears 27 will drive the two sets of gear rods 24 meshing with each other to move upward inside the two sets of housings 23. During the upward movement of the two sets of gear rods 24, the top plate 2 and the two sets of ultrasonic detection rings 3 will be driven to move upward together. After moving a certain distance, the double-axis motor 26 is turned off;

[0042] S3: After the height adjustment is completed, the driving motor 17 is started again. When the driving motor 17 is working, it will drive the mounting plate 18 to rotate. During the rotation process, the mounting plate 18 will drive the two sets of fixed shafts 19 to rotate together. Since the two sets of fixed shafts 19 are rotatably connected with the two sets of connecting rods 20, and the two sets of fixed shafts 19 will cause the two sets of connecting rods 20 to rotate on the outer walls of the two sets of fixed shafts 22 during the rotation process, the two sets of connecting rods 20 will cause the two sets of fixed plates 21 to drive the two sets of sliders 5 to slide inside the two sets of slide grooves 4 toward the location of the pipeline. During the sliding process, the two sets of sliders 5 will drive the two sets of ultrasonic detection rings 3 to move together. After moving a certain distance, the two sets of ultrasonic detection rings 3 will be tightly attached to the outer wall of the pipeline.

[0043] S4: After the two sets of ultrasonic testing rings 3 are attached tightly, the annular seam of the pipeline can be tested;

[0044] S5: When the ultrasonic detection ring 3 fails and needs to be disassembled and replaced, the pull rod 13 is pulled to drive the limit pin 11 to slide inside the circular hole 10. The limit pin 11 will drive the circular ring 12 to move together during the sliding process. The circular ring 12 will squeeze the reset spring 14 toward the inner side of the fixing frame 9 during the movement. After being squeezed to a certain extent, the limit pin 11 will move away from the limit hole 8. After moving away, the ultrasonic detection ring 3 and the plug block 7 are taken out from the slot 6, and then the new ultrasonic detection ring 3 and the plug block 7 are inserted into the slot 6. After insertion, the pull rod 13 is released again. After release, the rebound force of the reset spring 14 will bounce the limit pin 11 into the limit hole 8.

[0045] The working principle of the device is as follows: when in use, the device is first moved to the bottom of the pipeline to be inspected, and then the four groups of hydraulic cylinders 30 are started. When the four groups of hydraulic cylinders 30 are working, they will drive the four groups of top blocks 31 to move downward. After moving a certain distance, the four groups of top blocks 31 will lift the device, thereby effectively preventing the device from being displaced by the rollers 32 during use, thereby improving the stability of the device. After lifting, start the dual-axis motor 26. When the dual-axis motor 26 is working, it will drive the two sets of gears 27 to rotate. During the rotation, the two sets of gears 27 will drive the two sets of gear rods 24 meshing with each other to move upward inside the two sets of shells 23. During the upward movement, the two sets of gear rods 24 will drive the top plate 2 and the two sets of ultrasonic detection rings 3 to move upward together. After moving a certain distance, turn off the dual-axis motor 26. Through the dual-axis motor 26 and gear 27 transmission system, precise height adjustment is achieved to adapt to different work requirements. At the same time, automatic adjustment reduces the need for manual operation, improves work efficiency and detection accuracy, and the gears 27 and gear rods 24 driven by the dual-axis motor 26 ensure the stability and synchronization of the height adjustment process, avoiding errors caused by asynchrony. After the height adjustment is completed, the driving motor 17 is started again. When the driving motor 17 is working, it will drive the mounting plate 18 to rotate. During the rotation process, the mounting plate 18 will drive the two sets of fixed shafts 19 to rotate together. Since the two sets of fixed shafts 19 are rotatably connected with the two sets of connecting rods 20, and the two sets of fixed shafts 19 will make the two sets of connecting rods 20 rotate on the outer wall of the two sets of fixed shafts 22 during the rotation process, the two sets of connecting rods 20 will make the two sets of fixed plates 21 drive the two sets of sliders 5 to slide inside the two sets of slide grooves 4 toward the location of the pipeline during the rotation process. During the sliding process, the two sets of sliders 5 will drive the two sets of ultrasonic detection rings 3 to move together. After moving a certain distance, the two sets of ultrasonic detection rings 3 will be tightly attached to the outer wall of the pipeline, thereby improving the accuracy and reliability of the detection. At the same time, the automated design reduces the need for manual operation and improves work efficiency and consistency. After being tightly attached, the two sets of ultrasonic detection rings 3 can be used to detect the annular seam of the pipeline. When the ultrasonic detection ring 3 fails and needs to be disassembled and replaced, the pull rod 13 is pulled to drive the limit pin 11 to slide inside the circular hole 10. The limit pin 11 will drive the circular ring 12 to move during the sliding process. The circular ring 12 will squeeze the reset spring 14 toward the inner side of the fixing frame 9 during the movement. After being squeezed to a certain extent, the limit pin 11 will move away from the limit hole 8. After moving away, the ultrasonic detection ring 3 and the plug block 7 are taken out from the slot 6. After taking them out, the new ultrasonic detection ring 3 and the plug block 7 are inserted into the slot 6. After insertion, the pull rod 13 is released again. After release, the rebound force of the reset spring 14 will bounce the limit pin 11 into the limit hole 8, thereby improving the disassembly and replacement efficiency of the ultrasonic detection ring 3, effectively avoiding the need to completely replace the equipment when the ultrasonic detection ring 3 fails, and reducing the maintenance cost.

[0046] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pipeline annular seam ultrasonic detection auxiliary tooling, comprising a bottom plate (1), a top plate (2) and an ultrasonic detection ring (3), characterized in that: The top of the top plate (2) is symmetrically provided with a slide groove (4), the inside of the slide groove (4) is slidably connected to a slider (5), the top of the slider (5) is provided with a slot (6), the inside of the slot (6) is slidably connected to an insert block (7), a limit insertion hole (8) is provided between the insert block (7) and one side of the slider (5), a fixing frame (9) is fixedly installed on the side of the slider (5) close to the limit insertion hole (8), a round hole (10) is penetrated and provided on the side of the fixing frame (9) away from the slider (5), a limit pin (11) is slidably connected to the inside of the round hole (10), and the limit pin (11) is slidably connected to the inside of the round hole (10). A circular ring (12) is fixedly mounted on the outer wall of the position latch (11); a pull rod (13) is fixedly mounted on one end of the position latch (11) away from the circular hole (10); a return spring (14) is sleeved on the outer wall of the position latch (11); a push handle (15) is symmetrically fixedly mounted on the top of the bottom plate (1); a hydraulic cylinder (30) is symmetrically fixedly mounted on the top of the bottom plate (1); a top block (31) is fixedly mounted on the output end of the hydraulic cylinder (30); a roller (32) is symmetrically fixedly mounted on the bottom of the bottom plate (1); and a drive motor (13) is fixedly mounted on the bottom of the top plate (2). 7), a mounting plate (18) is fixedly mounted on the output end of the driving motor (17), a fixed shaft (19) is symmetrically fixedly mounted on the top of the mounting plate (18), a connecting rod (20) is rotatably connected to the outer wall of the fixed shaft (19), a fixing plate (21) is fixedly mounted on the side of the slider (5) away from the fixing frame (9), a fixed shaft (22) is fixedly mounted on the top of the fixing plate (21), the fixed shaft (22) is rotatably connected to the connecting rod (20), a shell (23) is symmetrically fixedly mounted on the top of the bottom plate (1), and the shell (23) A square plate (29) is slidably connected to the inside of the housing (23); a gear rod (24) is fixedly mounted on the top of the square plate (29); a stop frame (28) is fixedly mounted on the top of the housing (23); a vertical plate (25) is fixedly mounted on the top of the bottom plate (1); a dual-axis motor (26) is fixedly mounted inside the vertical plate (25); a gear (27) is fixedly mounted on the output end of the dual-axis motor (26); the stop frame (28) is slidably connected to the gear rod (24); the gear (27) and the gear rod (24) are meshed with each other; and the gear rod (24) is fixedly connected to the top plate (2); The insert block (7) is fixedly connected to the ultrasonic detection ring (3); One end of the return spring (14) is fixedly connected to the ring (12), and the other end of the return spring (14) is fixedly connected to the fixing frame (9); The limit pin (11) is slidably connected to the limit socket (8), and an anti-slip sleeve (16) is fixedly mounted on the top outer wall of the push handle (15).

2. A working method of an auxiliary tool for ultrasonic detection of pipeline annular seams, characterized in that: The pipeline annular seam ultrasonic detection auxiliary tooling according to claim 1 is used, comprising the following steps: S1: First, the device is moved to the bottom of the pipeline to be inspected, and then the four groups of hydraulic cylinders (30) are started. When the four groups of hydraulic cylinders (30) are working, they will drive the four groups of top blocks (31) to move downward. After moving a certain distance, the four groups of top blocks (31) will lift up the device; S2: After the top is lifted, the double-axis motor (26) is started again. When the double-axis motor (26) is working, it drives the two sets of gears (27) to rotate. During the rotation process, the two sets of gears (27) drive the two sets of gear rods (24) meshing with each other to move upward inside the two sets of shells (23). During the upward movement process, the two sets of gear rods (24) drive the top plate (2) and the two sets of ultrasonic detection rings (3) to move upward together. After moving a certain distance, the double-axis motor (26) is turned off; S3: After the height adjustment is completed, the driving motor (17) is started again. When the driving motor (17) is working, it drives the mounting plate (18) to rotate. During the rotation process, the mounting plate (18) drives the two sets of fixed shafts (19) to rotate together. Since the two sets of fixed shafts (19) are rotatably connected to the two sets of connecting rods (20), and the two sets of fixed shafts (19) rotate on the outer walls of the two sets of fixed shafts (22) during the rotation process, the two sets of connecting rods (20) drive the two sets of fixed plates (21) to drive the two sets of sliders (5) to slide inside the two sets of slide grooves (4) toward the location of the pipeline. During the sliding process, the two sets of sliders (5) drive the two sets of ultrasonic detection rings (3) to move together. After moving a certain distance, the two sets of ultrasonic detection rings (3) will be tightly attached to the outer wall of the pipeline. S4: After the two sets of ultrasonic testing rings (3) are tightly attached, the annular seam of the pipeline can be tested; S5: When the ultrasonic detection ring (3) fails and needs to be disassembled and replaced, the pull rod (13) is pulled to drive the limit pin (11) to slide inside the circular hole (10). The limit pin (11) will drive the circular ring (12) to move together during the sliding process. The circular ring (12) will squeeze the return spring (14) toward the inner side of the fixing frame (9) during the movement. After squeezing to a certain extent, the limit pin (11) will move away from the limit hole (8). After moving away, the ultrasonic detection ring (3) and the plug (7) are removed from the slot (6). After being removed, a new ultrasonic detection ring (3) and the plug (7) are inserted into the slot (6). After the insertion, the pull rod (13) is released. After the release, the rebound force of the return spring (14) will bounce the limit pin (11) into the limit hole (8).

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