A water conservancy pipeline butt joint detection device

Abstract

The present invention discloses a water conservancy pipeline butt joint detection device, which relates to the technical field of detection. It includes two support walking components, and an ultrasonic detection component is installed between the two ultrasonic detection components. The ultrasonic detection component includes an ultrasonic detection disk. A water delivery pipe is fixedly installed on the ultrasonic detection disk and communicated with a second chamber. The second chamber is filled with water, and a rubber film expands and fits with the inner side of the pipeline. Water is passed between the two second chambers as a coupling agent for ultrasonic detection. After sealing the gap between the two pipelines from the inner side of the pipeline, the leakage of the coupling agent is prevented. The welding joint is detected by an ultrasonic probe, and the detection from the inner side to the outer side is closer to the working state of the pipeline, and more accurate results can be detected.

Description

Technical Field

[0001] The present invention relates to the field of detection technologies, and particularly to a detection device for water conservancy pipeline docking. Background Art

[0002] In a water conservancy pipeline system, the inner wall connection position is a stress concentration and corrosion-sensitive area, and its quality directly affects the safety and service life of the pipeline. Traditional pipeline detection technologies have limitations such as low efficiency, high radiation risk, and difficulty in covering complex internal structures. With the development of non-destructive testing technologies, ultrasonic flaw detection has gradually become the core means for detecting defects at the inner wall connection position of pipelines due to its non-destructive nature, high sensitivity, and quantitative analysis advantages. However, there are many challenges in detecting the inner wall of pipelines: First, the geometric shape of the connection part is complex, and it is difficult for conventional ultrasonic probes to achieve perpendicular incidence of the sound beam and full coverage scanning; Second, the internal environment of the pipeline is restricted (such as narrow space, medium residue, or high temperature and high pressure), and the traditional contact coupling detection has low efficiency and poor stability; Third, there are various types of defects, and it is necessary to combine multi-modal ultrasonic technologies to achieve accurate identification. Therefore, in recent years, the technological development has focused on directions such as automated crawlers equipped with phased array probes, optimization of immersion method and water spray coupling, and fusion of time of flight diffraction method and full focusing technique, through dynamic focusing, multi-angle sound beam emission, and real-time imaging algorithms.

[0003] However, ultrasonic flaw detection requires a coupling agent. However, in the detection of the inner wall of pipelines, it is very difficult to apply the coupling agent. Even if it is applied, it is impossible to determine whether it will slip off during the detection. Therefore, if the space between the probe and the position to be detected is filled with water, the problem of difficult application of the coupling agent can be solved. Summary of the Invention

[0004] In view of the above technical problems, the present invention discloses a detection device for water conservancy pipeline docking, which includes two support walking components. An ultrasonic detection component is installed between the two support walking components. The ultrasonic detection component includes an ultrasonic detection disc. A partition plate is fixedly installed on the edge of the ultrasonic detection disc. On the side of the partition plate away from the center of the circle, there are two second chambers, and the two second chambers are respectively located on both sides of the pipeline gap. A rubber film is fixedly installed at the end of the second chamber. A water supply pipe is fixedly installed on the ultrasonic detection disc and is communicated with the second chamber. Water is filled in the second chamber, and the rubber film expands and fits with the inner side of the pipeline. An ultrasonic probe is installed between the two second chambers, and ultrasonic detection is carried out with water as the coupling agent. Through the above technical solution, after the rubber film expands, it can fit with the inner wall of the pipeline. In this way, the diameter of the ultrasonic detection disc can be smaller than the diameter of the pipeline, which is convenient for moving inside the pipeline. The gap between the two pipelines is sealed from the inside of the pipeline to ensure that the coupling agent does not leak out. The distance between the ultrasonic probe and the pipe wall is twice the focal length of the probe, which is 30 mm. And detecting from the inside to the outside is closer to the working state of the pipeline, and more accurate results can be detected.

[0005] Further, a first chamber is provided and communicated between the two second chambers, a third chamber is provided between the two second chambers, a pressure valve is provided between the third chamber and the second chamber, and the water supply pipe is communicated with the first chamber.

[0006] Further, a water supply pipeline is fixedly installed on the water supply pipe. The water supply pipeline is a flexible pipe and is fixedly connected to one end of the pipeline. When the water supply pipeline is straightened, the ultrasonic detection component is located at the gap between the two pipelines. Through the above technical solution, the pressure valve can prevent water from entering the third chamber first. Water is first filled into the second chamber to make the rubber film expand and fit with the inner wall of the pipeline. After a sealed space is formed, the pressure pushes open the pressure valve to inject water into the third chamber for detection, ensuring that the water in the third chamber will not flow out from both sides of the second chamber.

[0007] Further, sliding rails are fixedly installed on both sides of the ultrasonic detection disc. A plurality of support rods are slidably installed on the sliding rails. A sealing arc rod is fixedly installed at the end of the support rod far from the center of the circle. The sealing arc rod extends out to fit with the pipeline, and the rubber film expands to fit with the sealing arc rod.

[0008] Further, gaps are left between the plurality of sliding rails after being expanded. A sealing plate is slidably installed between adjacent two support rods. The sealing plate extends out and is located between the gaps of the two sliding rails. The rubber film expands to fit with the sealing plate. Through the above technical solution, setting the sealing arc rod and the sealing plate to extend out and fit with the pipeline wall can ensure that the rubber film will not expand excessively to both sides of the ultrasonic detection component, playing a role in limiting and ensuring the sealing performance.

[0009] Further, the support walking component includes a support disc. A plurality of telescopic wheel components are provided on the support disc. The two support walking components are driven by the telescopic wheel components to move in the pipeline. A support plate is installed on the support disc. A plurality of through holes are provided on the support plate. A leveling rod is lapped in the through holes. The leveling rod is lapped between the two support walking components. The two support walking components are respectively located in the two pipelines, and the two pipelines are misaligned and the leveling rod is inclined. Through the above technical solution, the state of the leveling rod can be used to detect whether the two pipelines are aligned. If there is a misalignment, the leveling rod will tilt. A sensor is provided on the through hole here to detect whether the distances between the leveling rod and the sensor are equal.

[0010] Further, a short rod is slidably installed on the support rod. A compensation spring is fixedly installed between the short rod and the support rod. Hinge points are provided on both the short rod and the sealing plate.

[0011] Further, a hinge point is provided on one side of the support plate close to the ultrasonic detection component. A first connecting rod is hinged to the support plate. The first connecting rod is hinged to the plugging plate, and a second connecting rod is hinged to the support plate. The second connecting rod is hinged to the short rod. Through the above technical solution, during the process of walking in the pipeline, the plugging arc rod and the plugging plate are in a retracted state and do not fit against the side wall of the pipeline, reducing the walking resistance. When reaching the designated position, they are propped up by the first connecting rod and the second connecting rod.

[0012] Further, a cleaning disc is fixedly installed on one side of the supporting walking component. Cleaning wheels are provided on the cleaning disc. The cleaning disc and the cleaning wheels are located at the forefront of the moving direction. Through the above technical solution, the cleaning disc and the cleaning wheels are located at the forefront for cleaning. Without debris in the pipeline, both supporting walking components can fit against the inner wall of the pipeline, and they will not be misaligned due to debris. Moreover, cleaning the debris in the gap between the two pipelines can make the ultrasonic detection component seal the gap more tightly, ensuring the accuracy of detection.

[0013] The beneficial effects of the present invention compared with the prior art are as follows:

[0014] (1) Through the technical solution of the present invention, after the rubber film expands, it can fit against the inner wall of the pipeline. In this way, the diameter of the ultrasonic detection disc can be smaller than the diameter of the pipeline, avoiding friction and facilitating movement in the pipeline. After sealing the gap between the two pipelines from the inside of the pipeline and filling it with water as a coupling agent, the problem of inability to apply the coupling agent for inner wall detection is solved. The present invention uses water as the coupling agent and directly fills it inside the pipeline wall. The ultrasonic probe is located in the water, avoiding contact with air, reducing errors, and being closer to the working state of the pipeline from the inside to the outside, enabling more accurate detection results.

[0015] (2) Through the technical solution of the present invention, the pressure valve can prevent water from entering the third chamber first. Water is first filled into the second chamber to make the rubber film expand and fit against the inner wall of the pipeline. After forming a sealed space, the pressure pushes open the pressure valve to inject water into the third chamber for detection, ensuring that the water in the third chamber will not flow out from both sides of the second chamber. The plugging arc rod and the plugging plate are set to extend and fit against the pipeline wall, which can ensure that the rubber film will not expand excessively to both sides of the ultrasonic detection component, playing a role in limiting and ensuring the sealing performance.

[0016] (3) Through the technical solution of the present invention, it is possible to detect whether the two pipelines are aligned by the state of the leveling rod. If there is misalignment, the leveling rod will tilt. A sensor is provided on the through hole here to detect whether the distances between the leveling rod and the sensor are equal.

[0017] (4) Through the technical solution of the present invention, during the process of walking in the pipeline, the plugging arc rod and the plugging plate are in a retracted state and do not fit against the side wall of the pipeline, reducing the walking resistance. When reaching the designated position, they are propped up by the first connecting rod and the second connecting rod.

[0018] (5) Through the technical solution of the present invention, the cleaning disc and the cleaning wheel are located at the frontmost side for cleaning, pushing large debris forward. Without debris in the pipeline, both support walking components can be made to fit closely against the inner wall of the pipeline as much as possible, and the two support walking components will not be misaligned due to debris. Moreover, cleaning the debris in the gap between the two pipelines can make the ultrasonic detection component seal the gap more tightly, ensuring the accuracy of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the position of the embodiment of the present invention in the pipeline.

[0020] Figure 2 Schematic diagram of the overall structure of the embodiment of the present invention.

[0021] Figure 3 is Figure 2 The enlarged view of part C in

[0022] Figure 4 Schematic diagram of the support walking component of the embodiment of the present invention.

[0023] Figure 5 is Figure 4 The enlarged view of part A in

[0024] Figure 6 Front view of the ultrasonic detection component of the embodiment of the present invention.

[0025] Figure 7 is Figure 6 The cross-sectional view taken along line C-C in

[0026] Figure 8 is Figure 7 The enlarged view of part B in

[0027] Figure 9 is Figure 7 The enlarged view of part D in

[0028] Reference numerals: 1 - Support walking assembly; 2 - Ultrasonic detection assembly; 3 - Cleaning disc; 4 - Water supply pipeline; 5 - Pipeline; 6 - Cleaning wheel; 7 - Connecting rod 1; 8 - Connecting rod 2; 101 - Support disc; 102 - Sliding mounting plate; 103 - Square rod; 104 - Threaded rod; 105 - Driving gear; 106 - End face gear; 107 - Support plate; 108 - Roller seat; 109 - Shock-absorbing spring; 110 - Roller; 111 - Leveling rod; 201 - Ultrasonic detection disc; 202 - Sealing arc rod; 203 - Support rod; 204 - Compensation spring; 205 - Short rod; 206 - Sealing plate; 207 - Slide rail; 208 - Water supply pipe; 209 - Partition plate; 210 - First chamber; 211 - Second chamber; 212 - Rubber film; 213 - Third chamber; 214 - Pressure valve; 215 - Ultrasonic probe. Detailed implementation manners

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] As Figures 1-9 shown, a water pipeline docking detection device includes two support walking assemblies 1. An ultrasonic detection assembly 2 is installed between the two support walking assemblies 1. A cleaning disc 3 is fixedly installed on one side of one of the support walking assemblies 1. A cleaning wheel 6 is arranged on the cleaning disc 3. The cleaning disc 3 and the cleaning wheel 6 are located at the forefront of the moving direction. A driving motor is arranged on the cleaning disc 3 to drive the cleaning wheel 6 to rotate. The rotation of the cleaning wheel 6 can clean the sundries on the inner wall of the pipeline 5. The cleaning disc 3 and the cleaning wheel 6 are located at the forefront for cleaning. When there are no sundries in the pipeline 5, both support walking assemblies 1 can be attached to the inner wall of the pipeline 5, and the two support walking assemblies 1 will not be misaligned due to sundries. Moreover, cleaning the sundries in the gap between the two pipelines 5 can improve the detection accuracy of the ultrasonic detection assembly 2.

[0031] In this embodiment, the ultrasonic detection assembly 2 includes an ultrasonic detection disk 201. A partition plate 209 is fixedly installed on the edge of the ultrasonic detection disk 201. On the side of the partition plate 209 away from the center of the circle, there are two second chambers 211. The second chambers 211 are annular. The two second chambers 211 are respectively located on both sides of the gap of the pipeline 5. A rubber film 212 is fixedly installed at the end of the second chamber 211. A water supply pipe 208 is fixedly installed on the ultrasonic detection disk 201 and communicated with the second chamber 211. A first chamber 210 is arranged and communicated between the two second chambers 211. A third chamber 213 is arranged between the two second chambers 211. A pressure valve 214 is arranged between the third chamber 213 and the second chamber 211. The water supply pipe 208 is communicated with the first chamber 210. When water is injected into the water supply pipe 208, the water first reaches the first chamber 210 and then flows into the second chamber 211. As the pressure increases, the rubber film 212 expands and fits against the inner wall of the pipeline 5. The rubber film 212 is made of rubber and completely fits and seals against the inner wall of the pipeline 5. The third chamber 213, the first chamber 210, and the rubber film 212 are all annular. Multiple pressure valves 214 are provided. In this embodiment, there are six pressure valves. Three of them ventilate the third chamber 213, and the other three are directly connected to the water supply pipe 208. Six water supply pipes 208 are provided. Three of them supply water into the first chamber 210, and the other three are directly connected to the pressure valves 214. When the water flows into the third chamber 213, the air in the third chamber 213 is discharged from the three pressure valves 214 that ventilate to the outside. The water supply pipes 208 directly connected to the pressure valves 214 are controlled by valves and are closed when the liquid is full.

[0032] In this embodiment, when the second chamber 211 is filled with water, the rubber film 212 expands and fits against the inner side of the pipeline 5. An ultrasonic probe 215 is installed between the two second chambers 211. Multiple ultrasonic probes 215 are provided and are adjustable in the radial direction. They are adjusted according to the inner diameter of different pipeline inner walls to keep an appropriate distance between the ultrasonic probe and the pipe wall for detection. Through the above technical solution, the rubber film 212 can expand and fit against the inner wall of the pipeline 5. In this way, the diameter of the ultrasonic detection disk 201 can be smaller than the diameter of the pipeline 5, which is convenient for moving inside the pipeline 5. After sealing the gap between the two pipelines 5 from the inside of the pipeline 5 and then passing water, it avoids the contact between the ultrasonic probe 215 and the air, improves the detection accuracy, and is closer to the working state of the pipeline 5 from the inside to the outside, and can detect more accurate results.

[0033] In this embodiment, a water supply pipeline 4 is fixedly installed on the water delivery pipe 208. The water supply pipeline 4 is a flexible pipe and is fixedly connected to one end of a pipeline 5. When the water supply pipeline 4 is straightened, the ultrasonic detection assembly 2 is located at the gap between the two pipelines 5. Through the above technical solution, the pressure valve 214 can prevent water from entering the third chamber 213 first. Water is first filled into the second chamber 211 to make the rubber film 212 expand and fit against the inner wall of the pipeline 5. After forming a sealed space, the pressure pushes open the pressure valve 214 to inject water into the third chamber 213 for detection, ensuring that the water in the third chamber 213 will not flow out from both sides of the second chamber 211.

[0034] In this embodiment, sliding rails 207 are fixedly installed on both sides of the ultrasonic detection disk 201. A plurality of support rods 203 are slidably installed on the sliding rails 207. In this embodiment, there are three support rods 203. A sealing arc rod 202 is fixedly installed at the end of the support rod 203 away from the center of the circle. The diameter of the sealing arc rod 202 is the same as the inner diameter of the pipeline 5. The sealing arc rod 202 extends out to fit against the pipeline 5. After the rubber film 212 expands, it fits against the sealing arc rod 202. There are gaps between the plurality of sliding rails 207 after being expanded. A sealing plate 206 is slidably installed between two adjacent support rods 203. The sealing plate 206 extends out and is located between the gaps of the two sliding rails 207. After the rubber film 212 expands, it fits against the sealing plate 206. Setting the sealing arc rod 202 and the sealing plate 206 to extend out and fit against the inner wall of the pipeline 5 can ensure that the rubber film 212 will not expand excessively to both sides of the ultrasonic detection assembly 2, playing a role in limiting and ensuring the sealing performance. Rubber pads are provided at the ends of the sealing arc rod 202 and the sealing plate 206. When fitting against the inner wall of the pipeline 5, the rubber pads are squeezed against the inner wall of the pipeline 5, also playing a certain sealing role. The width of the sealing plate 206 is exactly equal to the gap between the sealing arc rods 202 after extension. In this way, it can be ensured that the sealing arc rods 202 will not interfere with each other when retracting.

[0035] In this embodiment, the support walking assembly 1 includes a support disk 101. A plurality of telescopic wheel assemblies are arranged on the support disk 101. The telescopic wheel assembly includes three sliding mounting plates 102. The sliding mounting plates 102 are fixedly installed on the support disk 101. A square rod 103 is slidably installed on the sliding mounting plates 102. Square holes are provided on the sliding mounting plates 102 to cooperate with the square rod 103. A threaded rod 104 is fixedly installed at the top of the square rod 103. A driving gear 105 is rotatably installed inside the support disk 101. Threads are provided on the inner side of the driving gear 105 to cooperate with the threaded rod 104. A support plate 107 is rotatably installed at one end of the support disk 101. An end face gear 106 is fixedly installed on the support plate 107 and meshes with the driving gear 105. The rotation of the driving gear 105 drives the threaded rod 104 to move up and down. A roller seat 108 is slidably installed at the end of the threaded rod 104. A shock-absorbing spring 109 is fixedly installed between the roller seat 108 and the support disk 101. A roller 110 is installed on the roller seat 108. The roller 110 is driven by a motor.

[0036] In this embodiment, the telescopic wheel assembly drives the two support walking assemblies 1 to move in the pipeline 5. A support plate 107 is installed on the support disc 101. A plurality of through holes are provided on the support plate 107. A leveling rod 111 is lapped in the through holes. The leveling rod 111 is lapped between the two support walking assemblies 1. The two support walking assemblies 1 are respectively located in two pipelines 5. The two pipelines 5 are misaligned and the leveling rod 111 is inclined. Through the above technical solution, the state of the leveling rod 111 can be used to detect whether the two pipelines 5 are aligned. If there is a misalignment, the leveling rod 111 will tilt. A sensor is provided on the through hole here to detect whether the distances between the leveling rod 111 and the sensor are equal.

[0037] A short rod 205 is slidably installed on the support rod 203. A compensation spring 204 is fixedly installed between the short rod 205 and the support rod 203. Hinge points are provided on both the short rod 205 and the sealing plate 206. A hinge point is provided on one side of the support plate 107 close to the ultrasonic detection assembly 2. A first connecting rod 7 is hinged on the support plate 107. The first connecting rod 7 is hinged to the sealing plate 206. A second connecting rod 8 is hinged on the support plate 107. The second connecting rod 8 is hinged to the short rod 205. In order to prevent the sealing arc rod 202 from interfering with the sealing plate 206, the short rod 205 and the compensation spring 204 are provided so that the sealing arc rod 202 first fits the inner wall of the pipeline 5, and then the sealing plate 206 fits. When retracting, the sealing plate 206 retracts first, and then the sealing arc rod 202 retracts. During the process of walking in the pipeline 5, the sealing arc rod 202 and the sealing plate 206 are in a retracted state and do not fit the side wall of the pipeline 5, reducing the walking resistance. When reaching the designated position, they are propped up by the first connecting rod 7 and the second connecting rod 8.

[0038] Working principle: Fix the water supply pipeline 4 at one end of the pipeline 5 and take a certain length. Then manually rotate the support plate 107. The support plate 107 drives the end face gear 106 to rotate. The end face gear 106 drives the driving gear 105 to rotate. The rotation of the driving gear 105 drives the screw rod 104 to move up and down, so that the roller 110 abuts against the inner wall of the pipeline 5, and the blocking arc rod 202 and the blocking plate 206 are in the retracted state. Then adjust the position of the ultrasonic probe 215 so that the distance between the ultrasonic probe 215 and the pipe wall is 30 mm. Then start the telescopic wheel assembly. The telescopic wheel assembly drives the ultrasonic detection assembly 2 to move. The cleaning disc 3 and the cleaning wheel 6 perform cleaning at the frontmost side, pushing the garbage and sundries in the pipeline 5 forward. It can be moved and cleaned repeatedly to sweep away the sundries falling from the upper side of the inner wall of the pipeline. mainly to clean larger sundries. The small-sized sundries that are not completely cleaned can be covered by the rubber film 212, which will not affect the detection. When the water supply pipeline 4 is straightened, the ultrasonic detection assembly 2 is just located at the gap of the pipeline 5. At this time, reverse-start the support walking assembly 1 at the rear side, that is, the two support walking assemblies 1 move away from each other. This will drive the connecting rod one 7 and the connecting rod two 8. The connecting rod one 7 and the connecting rod two 8 drive the short rod 205 and the blocking plate 206. The short rod 205 drives the blocking arc rod 202 to first contact the inner wall of the pipeline 5. Then the blocking arc rod 202 cannot move. The short rod 205 slides on the support rod 203 and squeezes the compensation spring 204. During this process, the blocking plate 206 gradually contacts the inner wall of the pipeline 5 and then stops, and the position is locked. The two support walking assemblies 1 both maintain the position of moving away from each other and are maintained by the telescopic wheel assembly.

[0039] At this time, the sensor detects the state of the leveling rod 111. If the pipeline 5 is misaligned, then the two support walking assemblies 1 are in a misaligned state, and the leveling rod 111 is not level, and the distances from the sensors in the through holes are different. After the misalignment detection is completed, water is filled into the ultrasonic detection assembly 2 through the water supply pipeline 4; as Figure 8 shown, the water flows into the first chamber 210 through the water supply pipe 208. The first chamber 210 flows into the two second chambers 211. As the water pressure increases, the rubber film 212 expands and squeezes the inner wall of the pipeline 5. A closed space is formed between the two second chambers 211. When the rubber film 212 expands, it will closely adhere to the side walls of the blocking arc rod 202 and the blocking plate 206. Then the pressure valve 214 is pushed open, and water enters the third chamber 213. The air in the third chamber 213 is discharged from other pressure valves 214 (there are three pressure valves 214 directly connected to the three water supply pipes 208 for exhaust, Figure 8 which is a schematic diagram of water entering the third chamber 213, Figure 9Schematic diagram of the third chamber draining water outwards. Mainly due to the different directions of the pressure valve 214), when the third chamber 213 is filled with water and has a certain pressure, the water supply pipe 208 for exhaust is closed. After all the air is exhausted, the ultrasonic probe 215 starts to detect. Since there is no air between the ultrasonic probe 215 and the pipe wall, the detection is more accurate.

[0040] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A water conservancy pipeline butt joint detection device, comprising two support walking components (1), and an ultrasonic detection component (2) is installed between the two support walking components (1), characterized in that, The ultrasonic detection assembly (2) comprises an ultrasonic detection plate (201), a partition plate (209) is fixedly mounted on the edge of the ultrasonic detection plate (201), two second chambers (211) are arranged on a side of the partition plate (209) away from the center of the circle, the two second chambers (211) are respectively located on two sides of the gap of the pipeline (5), a rubber film (212) is fixedly mounted on the end of the second chamber (211), a water supply pipe (208) is fixedly mounted on the ultrasonic detection plate (201), the water-filled rubber film (212) in the second chamber (211) expands and fits the inner side of the pipeline (5), an ultrasonic probe (215) is mounted between the two second chambers (211), and ultrasonic detection is performed using water as a coupling agent; A first chamber (210) is disposed between the two second chambers (211) and is in communication with each other; a third chamber (213) is disposed between the two second chambers (211); a pressure valve (214) is disposed between the third chamber (213) and the second chambers (211); and the water supply pipe (208) is in communication with the first chamber (210); The water supply pipe (208) is fixedly provided with a water supply pipeline (4), which is a hose and is fixedly connected to one end of the pipe (5). When the water supply pipeline (4) is straightened, the ultrasonic detection component (2) is located at the gap between the two pipes (5); Slide rails (207) are fixedly mounted on both sides of the ultrasonic detection plate (201), a plurality of support rods (203) are slidably mounted on the slide rails (207), a blocking arc rod (202) is fixedly mounted on one end of the support rod (203) away from the center of the circle, the blocking arc rod (202) is extended to fit with the pipe (5), and the rubber film (212) is expanded to fit with the blocking arc rod (202); After the plurality of slide rails (207) are spread out, gaps are left between each other. A blocking plate (206) is slidably installed between two adjacent support rods (203). The blocking plate (206) extends out and is located between the gaps of the two slide rails (207). After the rubber film (212) expands, it fits with the blocking plate (206).

2. The water conservancy pipeline butt joint detection device according to claim 1, wherein, The support travel assembly (1) comprises a support disc (101), a plurality of telescopic wheel assemblies are arranged on the support disc (101), and the two support travel assemblies (1) are driven to move in the pipe (5) by the telescopic wheel assemblies. A support plate (107) is arranged on the support disc (101), and a plurality of through holes are arranged on the support plate (107). A leveling rod (111) is overlapped in the through holes, and the leveling rod (111) is overlapped between the two support travel assemblies (1). The two support travel assemblies (1) are respectively located in the two pipes (5), and the two pipes (5) are offset and the leveling rod (111) is tilted.

3. The water conservancy pipeline butt joint detection device according to claim 2, characterized in that, A short rod (205) is slidably mounted on the support rod (203), a compensation spring (204) is fixedly mounted between the short rod (205) and the support rod (203), and hinge points are provided on the short rod (205) and the blocking plate (206).

4. The water conservancy pipeline butt joint detection device according to claim 3, characterized in that, On one side of the support plate (107) close to the ultrasonic detection assembly (2), a hinge point is provided. A first connecting rod (7) is hinged on the support plate (107). The first connecting rod (7) is hinged to the plugging plate (206). A second connecting rod (8) is hinged on the support plate (107). The second connecting rod (8) is hinged to the short rod (205).

5. The water conservancy pipeline butt joint detection device according to claim 4, characterized in that, On one side of the support and walking assembly (1), a cleaning disk (3) is fixedly installed. A cleaning wheel (6) is arranged on the cleaning disk (3). The cleaning disk (3) and the cleaning wheel (6) are located at the forefront of the moving direction.

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