High water level municipal drainage pipeline defect acoustic wave detection equipment

Abstract

The application relates to the technical field of pipeline defect detection, and discloses a high-water-level municipal drainage pipeline defect sound wave detection equipment, which comprises a tripod, the bottom of the tripod is fixedly connected with an electric push rod one, the end, away from the tripod, of the electric push rod one is fixedly connected with a rotating rod one, and the equipment is fixed, at this time, four contact plates will drive the arc-shaped plates to tightly adhere to the inside of the drainage pipe; the water in the drainage pipe passes through the position of the guiding assembly, under the influence of the flow guide plate and the accumulation plate twisting the inner wall, a rotating force with the central axis of the pipe as the center is provided for the transverse flowing water, so that the water in the pushing assembly generates a rotating force which spreads around in the flowing process, and the larger impurities in the flowing water will more closely adhere to the inner wall of the drainage pipe under the influence of the rotating force, thereby reducing the influence of the larger impurities on the water sound transducer.

Description

Technical Field

[0001] This invention relates to the field of pipeline defect detection technology, specifically to an acoustic detection device for defects in high-water-level municipal drainage pipelines. Background Technology

[0002] Drainage pipeline defect detection technology mainly includes traditional methods such as manual inspection, reflectors, and sludge measuring buckets, as well as modern drainage pipeline detection technologies such as closed-circuit television (CCTV) systems, sonar, pipe periscopes (QV), electrical leak detectors, in-pipe radar, and 3D laser scanning. Because traditional inspection methods have many drawbacks, especially the significant safety hazards posed by personnel entering the pipes for inspection, drainage pipeline defect detection devices are commonly used. These devices consist of six parts: a defect detection system, a display, a cable reel, a tripod, a hydroacoustic transducer, and a telescopic pole.

[0003] In particular, due to the high water level inside municipal drainage pipes and the flowing water in the drainage pipes, the underwater acoustic transducer needs to be completely immersed in water for testing. However, impurities such as fallen leaves and small garbage remaining in the drainage pipes may adhere to the transmitting end of the underwater acoustic transducer during operation, affecting the efficiency of sound wave transmission and reception. To address these issues, the following solutions are proposed. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides an acoustic wave detection device for defects in high-water-level municipal drainage pipelines, including a chassis and a tripod. An electric actuator is fixedly connected to the bottom of the tripod, and a rotating rod is fixedly connected to the end of the electric actuator away from the tripod. The device is characterized by further comprising: The driving mechanism is fixedly connected to the side wall of the rotating rod. The power mechanism is rotatably connected to the outer wall of the drive mechanism; The auxiliary mechanism is rotatably connected to the outer wall of the push mechanism; The chassis is used for transmitting and receiving signals. It includes a data acquisition card, a signal amplification module, a power amplification module, and a power supply module. The data acquisition card transmits the signal to the transmitting signal amplification module for amplification. The signal is then transmitted via cable to the drive mechanism for transmission. When the transmitted signal encounters a defect in the pipeline, it forms a reflected wave. The underwater acoustic transducer receives the reflected wave and transmits the reflected signal back to the receiving signal amplification module for amplification. The signal is then transmitted to the receiving signal filtering module to filter out noise and other interference signals. Finally, the signal is transmitted back to the host computer via the data acquisition card for analysis, enabling the detection and identification of various common pipeline defects.

[0005] Preferably, the driving mechanism includes: A support assembly is fixedly connected to one side wall of the rotating rod. A sliding component is slidably connected to the outer wall of the supporting component. The rotating rod is equipped with a drive motor, which can drive the support assembly to rotate around the rotating rod and ensure that the support assembly is in the center of the drainage pipe.

[0006] Preferably, the power mechanism includes: The pusher component rotates and connects to the outer wall of the support component; The guide component is fixedly connected to the outer wall of the push component; As the sliding component slides, it is driven by an auxiliary mechanism to extend the pushing component outward, forcing the outer wall of the pushing component to contact the inner wall of the drainage pipe.

[0007] Preferably, the auxiliary mechanism includes: The adaptive component is rotatably connected to the outer wall of the sliding component; When the power mechanism changes position, the sliding component forces the contact plate to expand outward through the adaptation component, and the adaptation component will make adaptive changes according to the change in the diameter of the drain pipe.

[0008] Preferably, the support assembly includes a fixed disk rotatably connected to one side wall of the rotating rod, a slide rail fixedly connected to the side wall of the fixed disk, and a water acoustic transducer fixedly connected to the end of the slide rail away from the fixed disk. When the electric actuator moves the support assembly downwards, the rotating rod will force the support assembly into the drain pipe. At this time, the rotating rod will move the underwater acoustic transducer toward the direction to be detected via the slide rail, and the signal will be transmitted to the underwater acoustic transducer for transmission via the cable.

[0009] Preferably, the sliding assembly includes a sliding ring slidably connected to the outer wall of the slide rail, and an electric push rod two is fixedly connected to the side wall of the sliding ring. The end of the electric push rod two away from the sliding ring is fixedly connected to the outer wall of the fixed plate. When the support assembly enters the drain pipe, the electric actuator will drive the sliding ring to slide along the outer wall of the slide rail.

[0010] Preferably, the pushing component includes four rotating rods 2 rotatably connected to the outer wall of the fixed disk, and a contact plate is rotatably connected to the end of the rotating rod 2 away from the fixed disk, and an arc-shaped plate is fixedly connected to the side wall of the contact plate; When the sliding component undergoes a sliding change, the sliding component forces the contact plate to expand outward through the adaptation component, and the outer wall of the contact plate will contact the inner wall of the drain pipe.

[0011] Preferably, the guiding component includes a guide plate fixedly connected to the side wall of the arc-shaped plate, and an accumulation plate fixedly connected to the side wall of the arc-shaped plate; The flowing water, constrained by the guide plate, will twist, causing the water to rotate along the inner wall of the drain pipe while flowing.

[0012] Preferably, the adapting component includes a push rod rotatably connected to the outer wall of the sliding ring, a sliding rod fixedly connected to the end of the push rod away from the sliding ring, a rotating track slidably connected to the end of the sliding rod away from the push rod, a rotating track rotatably connected to the outer wall of the contact plate at the end of the rotating track away from the sliding rod, and a spring fixedly connected to the side wall of the sliding rod. When the electric actuator 2 drives the sliding ring to slide along the outer wall of the slide rail, the sliding ring will force the contact plate to extend outward through the adaptation component. When the contact plate contacts the inner wall of the drain pipe, and the contact plate is restricted from extending outward, the sliding rod will slide along the inner wall of the rotating track and squeeze the spring 1 to generate deformation and accumulate potential energy.

[0013] The present invention has the following beneficial effects: (1) This invention addresses the problem of impurities inside the drainage pipe affecting the signal generation of the underwater acoustic transducer by incorporating a power mechanism inside the device. After the contact plates contact the inside of the drainage pipe and the device is fixed in place, the four contact plates will drive the arc-shaped plate to press tightly against the inside of the drainage pipe, such as... Figure 2 As shown, when the water inside the drain pipe passes through the guide component, the water will be subjected to a rotational force centered on the pipe axis due to the influence of the guide plate and the torsion of the inner wall of the accumulation plate. Through the application of the above components, the water inside the push component will generate a rotational force that spreads in all directions during the flow process. Under the influence of the rotational force, larger impurities in the water will adhere more closely to the inner wall of the drain pipe, reducing the impact of larger impurities on the water acoustic transducer. (2) This invention utilizes the characteristic of water flow adhering to the outer wall of the guide component. When impurities in the flowing water adhere more closely to the inner wall of the drain pipe, some impurities will enter the gap between the guide plate and the accumulation plate, such as... Figure 7 The position of M is determined by the thrust generated by the flowing water during this process, which forces impurities to flow towards the hydroacoustic transducer. Eventually, the impurities are discharged outward from the gap of the push component. Through the application of the above components, it is effectively prevented that the flowing water carries impurities to the center of the water flow for a second time, thus affecting the working efficiency of the hydroacoustic transducer.

[0014] (3) The present invention utilizes the above-mentioned guiding component to change the water flow direction inside the drain pipe, presenting a rotating characteristic. Due to the unstable distribution of impurities inside the guiding component and the horizontal movement of the main flow inside the drain pipe, the rotating water flow presents under the restriction of the guiding component during secondary flow. Under the influence of the two water flows intertwined, the water flow inside the drain pipe is in an unstable state. When the unstable water flows through the rotating rod 2, it will be difficult to generate the Karman vortex street effect. Through the application of the above-mentioned component, it is prevented that multiple rotating rods 2 will vibrate due to the Karman vortex street effect during the long-term operation of the water acoustic transducer, which will affect the working environment of the water acoustic transducer.

[0015] (4) The present invention utilizes the feature that the sliding ring drives the contact plate to expand outward through the adaptation component. When the electric push rod 2 drives the sliding ring to slide along the outer wall of the slide rail, the sliding ring will force the contact plate to extend outward through the adaptation component. When the contact plate contacts the inner wall of the drain pipe, when the contact plate is restricted from extending outward, the sliding rod will slide along the inner wall of the rotating track and squeeze the spring 1 to produce deformation. Through the application of the above components, the push rod can drive the contact plate to fit most of the pipe diameter. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the support components of the present invention; Figure 4 This is a cross-sectional schematic diagram of the power mechanism of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram illustrating the working state of the component in this invention; Figure 7 This is a schematic diagram of the guide component of the present invention; Figure 8 This is a schematic diagram of the arc-shaped plate of the present invention.

[0018] The attached diagram lists the components represented by each number as follows: In the diagram: 1. Pushing mechanism; 11. Support assembly; 12. Sliding assembly; 13. Chassis; 14. Tripod; 15. Electric push rod one; 16. Rotating rod one; 111. Fixed plate; 112. Slide rail; 113. Underwater acoustic transducer; 121. Sliding ring; 122. Electric push rod two; 2. Power mechanism; 21. Pushing assembly; 22. Guiding assembly; 211. Rotating rod two; 212. Contact plate; 213. Arc plate; 221. Guide plate; 222. Accumulation plate; 3. Auxiliary mechanism; 31. Adaptation assembly; 311. Push rod; 312. Sliding rod; 313. Rotating track; 314. Spring one. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1, please refer to Figure 1 - Figure 4 This invention relates to an acoustic wave detection device for defects in high-water-level municipal drainage pipelines, comprising a housing 13, a tripod 14, an electric actuator 15 fixedly connected to the bottom of the tripod 14, and a rotating rod 16 fixedly connected to the end of the electric actuator 15 away from the tripod 14. The invention is characterized by further comprising: Pushing mechanism 1 is fixedly connected to the side wall of rotating rod 16; Power mechanism 2 is rotatably connected to the outer wall of push mechanism 1; Auxiliary mechanism 3 is rotatably connected to the outer wall of the push mechanism 1; The chassis 13 is used for transmitting and receiving signals. It includes a data acquisition card, a signal amplification module, a power amplification module, and a power supply module. The data acquisition card transmits the signal to the transmitting signal amplification module to amplify the transmitted signal. The signal is transmitted to the push mechanism 1 via a cable for transmission. When the transmitted signal encounters a defect in the pipeline, it will form a reflected wave. The underwater acoustic transducer receives the reflected wave and transmits the reflected signal back to the receiving signal amplification module for signal amplification. The signal is then transmitted to the receiving signal filtering module to filter out noise and other interference signals. Finally, the signal is transmitted back to the host computer via the data acquisition card for analysis, realizing the detection and identification of various common defects in the pipeline.

[0021] The driving body 1 includes: Support assembly 11 is fixedly connected to the side wall of rotating rod 16; Sliding component 12 is slidably connected to the outer wall of support component 11; The rotating rod 16 is equipped with a drive motor, which can drive the support assembly 11 to rotate around the rotating rod 16 and ensure that the support assembly 11 is in the center of the drainage pipe.

[0022] The power mechanism 2 includes: Push component 21, push component 21 to rotate and connect to the outer wall of support component 11; Guide component 22 is fixedly connected to the outer wall of push component 21; As the sliding component 12 slides, the sliding component 12 drives the pushing component 21 to extend outward through the auxiliary mechanism 3, and forces the outer wall of the pushing component 21 to contact the inner wall of the drainage pipe.

[0023] Auxiliary mechanism 3 includes: Adaptive component 31 is rotatably connected to the outer wall of sliding component 12; When the power mechanism 2 changes position, the sliding component 12 forces the contact plate 212 to expand outward through the adaptation component 31. At the same time, the adaptation component 31 will make adaptive changes according to the change in the diameter of the drain pipe.

[0024] Example 2, please refer to Figure 2 - Figure 8 The present invention is an acoustic detection device for defects in high-water-level municipal drainage pipelines. Based on Example 1, the support component 11 includes a fixed disk 111 rotatably connected to the side wall of the rotating rod 16. A slide rail 112 is fixedly connected to the side wall of the fixed disk 111, and a water acoustic transducer 113 is fixedly connected to the end of the slide rail 112 away from the fixed disk 111. Utilizing the characteristic of water flow adhering to the outer wall of the guide component 22, when impurities in the flowing water adhere more closely to the inner wall of the drain pipe, some impurities will enter the gaps of the guide component 22, such as... Figure 7 The position of M is such that the thrust generated by the flowing water during this process will force the impurities to flow towards the direction of the hydroacoustic transducer 113. Finally, the impurities will be discharged outward from the gap of the push component 21. Through the application of the above components, it is effective to prevent the flowing water from carrying impurities to mix into the center of the water flow for a second time, which would affect the working efficiency of the hydroacoustic transducer 113.

[0025] The sliding assembly 12 includes a sliding ring 121 slidably connected to the outer wall of the slide rail 112, and an electric push rod 122 is fixedly connected to the side wall of the sliding ring 121. The end of the electric push rod 122 away from the sliding ring 121 is fixedly connected to the outer wall of the fixed plate 111. When the support assembly 11 enters the drain pipe, the electric actuator 122 will drive the sliding ring 121 to slide along the outer wall of the slide rail 112.

[0026] The pushing component 21 includes four rotating rods 211 rotatably connected to the outer wall of the fixed disk 111. A contact plate 212 is rotatably connected to the end of the rotating rod 211 away from the fixed disk 111. An arc-shaped plate 213 is fixedly connected to the side wall of the contact plate 212. Before use, the tripod 14 is placed at the wellhead. Then, the chassis 13 is connected to the tripod 14 via a cable. Subsequently, the electric actuator 15 drives the rotating rod 16 and the pushing mechanism 1 to slide downward. During this process, the rotating rod 16 drives the pushing mechanism 1 to penetrate deeper into the pipe. Then, the electric actuator 122 extends. At this time, the slide rail 112 drives the sliding ring 121 to slide outward along the outer wall of the slide rail 112, so that the sliding ring 121 forces the outer wall of the contact plate 212 to contact the inner wall of the drain pipe through the adaptation component 31, thus completing the basic fixing process.

[0027] The guiding component 22 includes a guide plate 221 fixedly connected to the side wall of the arc plate 213, and an accumulation plate 222 fixedly connected to the side wall of the arc plate 213. To address the issue of impurities inside the drainage pipe affecting the signal generation of the underwater acoustic transducer 113, a power mechanism 2 is installed inside the device. After the contact plates 212 contact the inside of the drainage pipe, completing the device's fixation, the four contact plates 212 will then drive the arc-shaped plate 213 to press tightly against the inside of the drainage pipe. Figure 2 As shown, when the water inside the drain pipe passes through the guide component 22, the water will be subjected to a rotational force centered on the pipe axis due to the torsion of the inner wall by the guide plate 221 and the accumulation plate 222. Through the application of the above components, the water inside the push component 21 will generate a rotational force that spreads in all directions during the flow process. Under the influence of the rotational force, larger impurities in the water will adhere more closely to the inner wall of the drain pipe, reducing the impact of larger impurities on the water acoustic transducer 113.

[0028] The adaptation component 31 includes a push rod 311 rotatably connected to the outer wall of the sliding ring 121. A sliding rod 312 is fixedly connected to one end of the push rod 311 away from the sliding ring 121. A rotating track 313 is slidably connected to one end of the sliding rod 312 away from the push rod 311. The end of the rotating track 313 away from the sliding rod 312 is rotatably connected to the outer wall of the contact plate 212. A spring 314 is fixedly connected to the side wall of the sliding rod 312. The guide component 22 is used to change the direction of water flow inside the drain pipe, resulting in a rotating flow. Due to the unstable distribution of impurities inside the guide component 22 and the fact that the main flow inside the drain pipe is lateral, the rotating water flow under the restriction of the guide component 22 during secondary flow, the water flow inside the drain pipe is unstable due to the mutual influence of the two water flows. When the unstable water flows through the rotating rod 211, it is difficult to generate the Karman vortex street effect. Through the application of the above components, it is prevented that multiple rotating rods 211 will vibrate due to the Karman vortex street effect during long-term operation of the underwater acoustic transducer 113, thus affecting the working environment of the underwater acoustic transducer 113.

[0029] Utilizing the characteristic that the sliding ring 121 drives the contact plate 212 to expand outward through the adaptation component 31, when the electric push rod 122 drives the sliding ring 121 to slide along the outer wall of the slide rail 112, the sliding ring 121 will force the contact plate 212 to extend outward through the adaptation component 31. When the contact plate 212 contacts the inner wall of the drain pipe, when the outward extension of the contact plate 212 is restricted, the sliding rod 312 will slide along the inner wall of the rotating track 313 and compress the spring 314 to produce deformation. Through the application of the above components, the push rod 311 can drive the contact plate 212 to fit most of the pipe diameter.

[0030] A specific application of this embodiment is as follows: Before use, the tripod 14 is placed at the wellhead. Then, the chassis 13 is connected to the tripod 14 by a cable. Then, the electric actuator 15 drives the rotating rod 16 and the pushing mechanism 1 to slide downward. During this process, the rotating rod 16 will drive the pushing mechanism 1 to penetrate into the inside of the pipe. Then, the electric actuator 122 will extend. At this time, the slide rail 112 will drive the sliding ring 121 to slide outward along the outer wall of the slide rail 112, so that the sliding ring 121 forces the outer wall of the contact plate 212 to contact the inner wall of the drain pipe through the adaptation component 31, thus completing the basic fixing process. The chassis 13 is used for transmitting and receiving signals. Chassis 13 includes a data acquisition card, a signal amplification module, a power amplification module, and a power supply module. The data acquisition card transmits the signal to the transmitting signal amplification module for amplification. The signal is then transmitted via cable to the underwater acoustic transducer 113 for transmission. When the transmitted signal encounters a defect in the pipeline, it generates a reflected wave. The underwater acoustic transducer 113 simultaneously receives the reflected wave and transmits the reflected signal back to the receiving signal amplification module for amplification. The signal is then transmitted to the receiving signal filtering module to filter out noise and other interference signals. Finally, the signal is transmitted back to the host computer via the data acquisition card for analysis, enabling the detection and identification of various common pipeline defects. To address the issue of impurities inside the drain pipe affecting the signal generation of the underwater acoustic transducer 113, a power mechanism 2 is installed inside the device. After the contact plates 212 contact the inside of the drain pipe, completing the device's fixation, the four contact plates 212 will then drive the arc-shaped plate 213 to press tightly against the inside of the drain pipe. Figure 2 As shown, when the water inside the drain pipe passes through the guide component 22, the water will be subjected to a rotational force centered on the pipe axis due to the influence of the torsion of the inner wall by the guide plate 221 and the accumulation plate 222. Through the application of the above components, the water inside the push component 21 will generate a rotational force that spreads in all directions during the flow process. Under the influence of the rotational force, larger impurities in the water will adhere more closely to the inner wall of the drain pipe, reducing the impact of larger impurities on the water acoustic transducer 113. Utilizing the aforementioned characteristic of water flow adhering to the outer wall of the guide component 22, when impurities in the flowing water adhere more closely to the inner wall of the drain pipe, some impurities will enter the gap between the guide plate 221 and the accumulation plate 222, such as... Figure 7 The position of M is such that the thrust generated by the flowing water during this process will force the impurities to flow towards the direction of the hydroacoustic transducer 113. Finally, the impurities will be discharged outward from the gap of the push component 21. Through the application of the above components, it is effective to prevent the flowing water from carrying impurities to mix into the center of the water flow for a second time, which would affect the working efficiency of the hydroacoustic transducer 113.

[0031] By using the aforementioned guiding component 22 to change the direction of water flow inside the drain pipe, a rotating characteristic is formed. Due to the unstable distribution of impurities inside the guiding component 22 and the fact that the main flow inside the drain pipe is lateral, the rotating water flow under the restriction of the guiding component 22 during secondary flow, the water flow inside the drain pipe is in an unstable state due to the mutual influence of the two water flows. When the unstable water flows through the rotating rod 211, it is difficult to generate the Karman vortex street effect. Through the application of the aforementioned component, it is prevented that multiple rotating rods 211 will vibrate due to the Karman vortex street effect during the long-term operation of the underwater acoustic transducer 113, thus affecting the working environment of the underwater acoustic transducer 113.

[0032] Utilizing the characteristic that the sliding ring 121 drives the contact plate 212 to expand outward through the adaptation component 31, when the electric push rod 122 drives the sliding ring 121 to slide along the outer wall of the slide rail 112, the sliding ring 121, through the adaptation component 31, forces the contact plate 212 to extend outward. When the contact plate 212 contacts the inner wall of the drain pipe, restricting the outward extension of the contact plate 212, the sliding rod 312 will slide along the inner wall of the rotating track 313 and compress the spring 314 to produce deformation. Through the application of the above-mentioned components, the push rod 311 can drive the contact plate 212 to conform to most of the pipe diameter. The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details exhaustively, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high-water-level municipal drainage pipeline defect acoustic detection device, comprising a chassis (13) and a tripod (14), wherein an electric actuator (15) is fixedly connected to the bottom of the tripod (14), and a rotating rod (16) is fixedly connected to the end of the electric actuator (15) away from the tripod (14), characterized in that, Also includes: A pushing mechanism (1) is fixedly connected to the side wall of the rotating rod (16); The power mechanism (2) is rotatably connected to the outer wall of the push mechanism (1); Auxiliary mechanism (3) is rotatably connected to the outer wall of the pushing mechanism (1); The chassis (13) is used to transmit and receive signals. It includes a data acquisition card, a signal amplification module, a power amplification module, and a power supply module. The data acquisition card transmits the signal to the transmitting signal amplification module to amplify the transmitted signal. The signal is transmitted to the push mechanism (1) via a cable for transmission. When the transmitted signal encounters a defect in the pipeline, it will form a reflected wave. The underwater acoustic transducer receives the reflected wave and transmits the reflected signal back to the receiving signal amplification module for signal amplification. Then, the signal is transmitted to the receiving signal filtering module to filter out noise and other interference signals. Finally, the signal is transmitted back to the host computer via the data acquisition card for analysis, thereby realizing the detection of common defects in the pipeline.

2. The acoustic detection equipment for defects in high-water-level municipal drainage pipelines according to claim 1, characterized in that: The propulsion mechanism (1) includes: Support assembly (11), which is fixedly connected to the side wall of rotating rod (16); A sliding component (12) is slidably connected to the outer wall of the support component (11); The rotating rod (16) is equipped with a drive motor, which can drive the support assembly (11) to rotate around the rotating rod (16) and ensure that the support assembly (11) is in the center of the drainage pipe.

3. The acoustic detection equipment for defects in high-water-level municipal drainage pipelines according to claim 2, characterized in that: The power mechanism (2) includes: A pushing component (21) is rotatably connected to the outer wall of the support component (11); A guide component (22) is fixedly connected to the outer wall of the push component (21); As the sliding component (12) slides, the sliding component (12) drives the pushing component (21) to extend outward through the auxiliary mechanism (3), and forces the outer wall of the pushing component (21) to contact the inner wall of the drainage pipe.

4. The acoustic wave detection device for defects in high-water-level municipal drainage pipelines according to claim 3, characterized in that: The auxiliary mechanism (3) includes: An adaptation component (31) is rotatably connected to the outer wall of the sliding component (12); When the power mechanism (2) changes position, the sliding component (12) forces the contact plate (212) to expand outward through the adaptation component (31), and the adaptation component (31) will make adaptive changes according to the change in the diameter of the drain pipe.

5. The acoustic wave detection device for defects in high-water-level municipal drainage pipelines according to claim 4, characterized in that: The support assembly (11) includes a fixed disk (111) rotatably connected to the side wall of the rotating rod (16), a slide rail (112) is fixedly connected to the side wall of the fixed disk (111), and a water acoustic transducer (113) is fixedly connected to the end of the slide rail (112) away from the fixed disk (111). When the electric push rod (15) drives the support assembly (11) to slide downward, the rotating rod (16) will force the support assembly (11) to enter the drain pipe. At this time, the rotating rod (16) will drive the underwater acoustic transducer (113) to the direction to be detected through the slide rail (112). The signal is transmitted to the underwater acoustic transducer (113) through the cable for transmission.

6. The acoustic detection device for defects in high-water-level municipal drainage pipelines according to claim 5, characterized in that: The sliding assembly (12) includes a sliding ring (121) slidably connected to the outer wall of the slide rail (112), and an electric push rod (122) is fixedly connected to the side wall of the sliding ring (121). The end of the electric push rod (122) away from the sliding ring (121) is fixedly connected to the outer wall of the fixed plate (111). When the support assembly (11) enters the drain pipe, the electric actuator (122) will drive the sliding ring (121) to slide along the outer wall of the slide rail (112).

7. The acoustic wave detection device for defects in high-water-level municipal drainage pipelines according to claim 5, characterized in that: The pushing assembly (21) includes four rotating rods (211) rotatably connected to the outer wall of the fixed disk (111). A contact plate (212) is rotatably connected to one end of the rotating rod (211) away from the fixed disk (111). An arc plate (213) is fixedly connected to the side wall of the contact plate (212). When the sliding component (12) undergoes a sliding change, the sliding component (12) forces the contact plate (212) to expand outward through the adaptation component (31), and the outer wall of the contact plate (212) will contact the inner wall of the drain pipe.

8. The acoustic wave detection device for defects in high-water-level municipal drainage pipelines according to claim 7, characterized in that: The guiding component (22) includes a guide plate (221) fixedly connected to the side wall of the arc plate (213), and an accumulation plate (222) is fixedly connected to the side wall of the arc plate (213). The flowing water, constrained by the guide plate (221) and the accumulation plate (222), will be twisted, causing the water to rotate along the inner wall of the drain pipe while flowing.

9. The acoustic detection equipment for defects in high-water-level municipal drainage pipelines according to claim 6, characterized in that: The adaptation component (31) includes a push rod (311) rotatably connected to the outer wall of the sliding ring (121). A sliding rod (312) is fixedly connected to one end of the push rod (311) away from the sliding ring (121). A rotating track (313) is slidably connected to one end of the sliding rod (312) away from the push rod (311). The end of the rotating track (313) away from the sliding rod (312) is rotatably connected to the outer wall of the contact plate (212). The side wall of the sliding rod (312) is... A spring (314) is fixedly connected; when the electric push rod (122) drives the sliding ring (121) to slide along the outer wall of the slide rail (112), the sliding ring (121) forces the contact plate (212) to extend outward through the adaptation component (31). When the contact plate (212) contacts the inner wall of the drain pipe, the sliding rod (312) will slide along the inner wall of the rotating track (313) and squeeze the spring (314) to generate deformation and accumulate potential energy.

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