A device for detecting permeability of a local damage area of a pipeline

Abstract

The present application relates to a kind of pipeline local damage area permeability detection device, including walking car, walking car top is equipped with first adjusting mechanism, first adjusting mechanism is connected with image acquisition element to adjust the position and posture of image acquisition element, walking car is connected with permeability detection mechanism located in the front end of walking car by second adjusting mechanism, permeability detection mechanism includes cylinder, cylinder both ends are equipped with air bag, cylinder part between two air bags is equipped with water outlet, one-way valve is equipped at water outlet, water outlet is connected with first water injection pipe, the detection device of the present application realizes the permeability detection of pipeline local damage area.

Description

Technical Field

[0001] This invention relates to the field of underground pipeline inspection technology, specifically to a device for detecting the permeability of locally damaged areas in pipelines. Background Technology

[0002] The statements herein provide only background information in relation to this invention and do not necessarily constitute prior art.

[0003] Urban underground pipe networks are a vital infrastructure and component of cities, serving as the lifeline for the normal operation of modern cities. Among them, stormwater and sewage pipes are crucial for urban drainage and sewage disposal, impacting urban safety and daily operations. During their service life, stormwater and sewage pipes often face corrosive wastewater and complex geological environments, leading to internal damage and cracks, which in turn cause leaks. These leaks frequently result in ground subsidence and soil pollution. Timely inspection and repair of stormwater and sewage pipes are essential for maintaining normal urban operations. However, stormwater and sewage pipes are enclosed underground environments, making inspection extremely difficult. Currently, the most common method for inspecting stormwater and sewage pipes is CCTV video recording, which involves a mobile vehicle equipped with a camera inside the pipe. For example, patent CN214368577U describes an inspection robot with a remote control and camera system, allowing workers to remotely control the robot to collect images and process them to assess the internal condition of the pipe. However, this type of inspection technology can only obtain surface data about the pipe's interior and cannot assess leaks.

[0004] Patent CN114183623A discloses a rapid detection device for leaks in municipal water supply pipelines. It seals both ends of the pipeline with airbags and then injects water into the pipeline to detect leaks. However, the above solution requires setting up a sealed box and sealing both ends of the pipeline, which cannot be applied to the actual field testing of the sealing performance of water supply pipelines. It can only be used for pipeline leak detection in the laboratory. Moreover, placing the airbags at both ends of the pipeline makes it impossible to adjust the position of the airbags as needed. It is only suitable for indoor testing of leaks in the entire pipeline and cannot be used for localized leak detection in actual field pipelines. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a permeability detection device for local damaged areas of pipelines, which is suitable for on-site permeability detection of local damaged areas of pipelines.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0007] An embodiment of the present invention provides a permeability detection device for a partially damaged area of ​​a pipeline, including a traveling vehicle. The top of the traveling vehicle is provided with a first adjustment mechanism, which is connected to an image acquisition element to adjust the position and orientation of the image acquisition element. The traveling vehicle is connected to a permeability detection mechanism located at the front end of the traveling vehicle through a second adjustment mechanism. The permeability detection mechanism includes a cylinder, with air bladders at both ends of the cylinder. A water outlet is provided in the part of the cylinder between the two air bladders, and a one-way valve is provided at the water outlet. The water outlet is connected to a first water injection pipe.

[0008] Optionally, one end of the cylinder is connected to the second adjusting mechanism, and the other end is provided with a rotating nozzle, which is connected to the second water injection pipe.

[0009] Optionally, both the first and second water injection pipes are connected to a water pump installed on the second regulating structure.

[0010] Optionally, the rotating nozzle is connected via a first telescopic element to achieve position adjustment along the axis of the cylinder, and the first telescopic element is connected to the cylinder.

[0011] Optionally, the two ends of the cylinder are provided with airbag slots, the airbag adopts a ring structure, its inner side is fixed in the airbag slot, and its outer circumferential surface is provided with a water-stop strip.

[0012] Optionally, the first adjustment mechanism includes a semi-circular guide rail, on which a sliding member is provided. The sliding member is connected to a first rotating element, and the first rotating element is connected to an image acquisition element through a first lifting element. The two ends of the semi-circular guide rail are connected to a second lifting element installed on the traveling vehicle.

[0013] Optionally, an illumination element is provided above the image acquisition element.

[0014] Optionally, the second adjustment mechanism includes a third lifting element installed on the vehicle body. The third lifting element is connected to the worktable, and the front end of the worktable is connected to the cylinder through a second telescopic element to drive the cylinder to move along its own axis.

[0015] Optionally, sleeves are coaxially provided on both the front and rear sides of the cylinder. The sleeves are connected to the rotation drive mechanism to achieve rotation around their own axis. A sealing grease spraying telescopic element is provided on the outer circumferential surface of the sleeve. The sealing grease spraying telescopic element is connected to the sealing grease conveying pipeline. The end of the sealing grease telescopic element is provided with a bent section to spray sealing grease toward the sealing position of the airbag and the inner side of the pipeline.

[0016] Optionally, the rear end of the vehicle is connected to a recycling cable.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. The permeability testing device of the present invention includes a traveling vehicle and an image acquisition element. The traveling vehicle can travel along the inside of the pipeline, and the image acquisition element can acquire images of the inside of the pipeline to obtain the location of local damage. A second adjustment mechanism is provided to position the local damage location between two air bladders on the cylinder. After the air bladders are inflated, they can seal both ends of the local damage location, forming a sealed space between the cylinder and the pipeline between the two air bladders. After water is injected through the first water injection pipe, the permeability of the damaged area can be detected. During the detection process, the traveling vehicle enables permeability testing only on the local damaged area of ​​the pipeline, without the need to inject water into the entire pipeline for testing. It is suitable for pipeline inspection in actual field applications.

[0019] 2. The permeability testing device of the present invention has a rotating nozzle at the end of the cylinder, which is connected to a second water injection pipe. Before testing, the rotating nozzle can be used to clean the local damaged area, so that the airbag can better seal against the inner side of the pipe wall, ensuring the sealing of the space formed between the local damaged area and the cylinder, and ensuring the smooth progress of the test and the accuracy of the test results.

[0020] 3. The permeability testing device of the present invention is provided with a second rotating element, a hollow rotating sleeve, a third telescopic element and a sealing grease delivery pipe, which can spray sealing grease on the sealing parts of the outer edge of the airbag and the pipe wall, thereby further ensuring the sealing performance and ensuring the accuracy of the test results. Attached Figure Description

[0021] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0022] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0023] Figure 2 This is the present invention. Figure 1 Enlarged view of section A in the image;

[0024] Figure 3 This is a schematic diagram of the first adjustment mechanism structure in Embodiment 1 of the present invention;

[0025] Figure 4 This is a schematic diagram of the inflation tube arrangement in Embodiment 1 of the present invention;

[0026] Figure 5 This is a schematic diagram of the sealing grease delivery pipe arrangement in Embodiment 1 of the present invention;

[0027] Figure 6 This is a schematic diagram of the arrangement of the first and second water injection pipes in Embodiment 1 of the present invention;

[0028] Figure 7 This is a schematic diagram of the permeability detection principle in Embodiment 1 of the present invention;

[0029] Among them, 1. Vehicle body, 2. Wheels, 3. Recycling line interface, 4. Third electric lifting rod, 5. Second water pump, 6. Workbench, 7. First water inlet, 8. Second water inlet, 9. First water inlet pipe, 10. Second water inlet pipe, 11. Lighting element, 12. Camera, 13. First electric lifting rod, 14. Rotating platform, 15. Semi-circular guide rail, 16. Sliding component, 17. Sealing grease delivery pipe interface, 18. Inflation interface, 19. Pipe box, 20. 21. Second electric telescopic tube, 22. First sleeve, 23. Airbag slot, 24. Airbag, 25. One-way valve, 26. Third electric telescopic tube, 27. Cylinder body, 28. Waterstop strip, 29. First electric telescopic tube, 30. Rotary nozzle, 31. Sealing gel layer, 32. Sealing grease delivery pipe, 33. Pipe, 34. Soil surrounding the pipe, 35. Permeable water, 36. Bolt, 37. Air pipe, 38. Second gear, 39. Motor. Detailed Implementation

[0030] Example 1

[0031] Embodiments of the present invention provide a device for detecting the permeability of a partially damaged area in a pipeline, such as... Figure 1 As shown, it includes a traveling vehicle that can move inside the pipe to be inspected. The traveling vehicle includes a vehicle body 1, which is equipped with wheels 2. The wheels 2 are used to cooperate with the inner side of the pipe, and the traveling vehicle moves along the pipe by means of the wheels 2.

[0032] The vehicle in question can be an existing electric vehicle, and its specific structure will not be described in detail here.

[0033] The vehicle body is equipped with a first adjustment mechanism, which is connected to the image acquisition element to adjust the position and orientation of the image acquisition element, so as to achieve all-round image acquisition of the inside of the pipeline and avoid missed acquisition.

[0034] like Figure 3 As shown, the first adjustment mechanism includes a semi-circular guide rail 15, and a second lifting element is connected to both ends of the semi-circular guide rail 15. Preferably, the second lifting element is an existing second electric lifting rod 21. The fixed part of the second electric lifting rod 21 is fixed to the side of the vehicle body 1, and its lifting part is fixed to the end of the semi-circular guide rail 15.

[0035] The semi-circular guide rail 15 is provided with a slider 16. The slider 16 is an electric vehicle that cooperates with the semi-circular guide rail 15. The electric vehicle can use existing equipment, and its specific structure will not be described in detail here.

[0036] The electric vehicle can move along the semi-circular guide rail 15. The vehicle body is equipped with an electromagnet, which contacts the semi-circular guide rail. When the electromagnet is energized, it can be attracted and fixed to the semi-circular guide rail 15, thus achieving the locking and fixation of the electric vehicle on the semi-circular guide rail.

[0037] The electric vehicle is equipped with a slewing element on its top surface. The slewing element is a slewing platform 14, which can be any existing equipment. Its specific structure will not be described in detail here. The slewing platform 14 is connected to a first lifting element. Preferably, the first lifting element is a first electric lifting rod 13. The fixed part of the first electric lifting rod 13 is fixed to the center position of the slewing platform 14. The lifting part of the first electric lifting rod 13 is connected to an image acquisition element. Preferably, the image acquisition element is a camera 12. The top of the camera 12 is equipped with a lighting element 13, which can be any existing lighting lamp.

[0038] The position and orientation of the camera 12 can be adjusted by the electric vehicle, the semi-circular guide rail 15, the rotating platform 14 and the first lifting element, so as to realize the all-round image acquisition of the pipeline and achieve detection without blind spots.

[0039] The top surface of the vehicle body 1 is provided with a second adjustment mechanism, which is connected to the permeability detection mechanism located at the front of the vehicle body 1. The second adjustment mechanism can adjust the position of the permeability detection mechanism.

[0040] The second adjustment mechanism includes two third lifting elements fixed to the upper surface of the vehicle body, with the two third lifting elements respectively fixed to the front and rear ends of the top surface of the vehicle body.

[0041] Preferably, the third lifting element is a third electric lifting rod 4. The fixing parts of the two third electric lifting rods 4 are fixed to the surface of the upper part of the vehicle body 1, and the lifting parts are fixed to the bottom surface of the worktable 6. The semi-circular guide rail 15 spans the worktable 6. Since the semi-circular guide rail 15 is connected to the second electric lifting rod 21, its height can be adjusted. Therefore, the semi-circular guide rail 15 will not hinder the lifting movement of the worktable 6.

[0042] A pipe box 19 is fixed to the front end of the top surface of the workbench 6. The front surface of the pipe box is connected to one end of the second telescopic element, and the other end of the second telescopic element is connected to the permeability testing mechanism.

[0043] Preferably, the second telescopic element is a second electric telescopic tube 20. The second electric telescopic tube 20 can be made using existing equipment, such as the electric telescopic tube disclosed in patent CN201921111873.4. Its specific structure will not be described in detail here.

[0044] The permeability testing mechanism includes a cylinder 27, which is coaxially fixed to the telescopic part of the second electric telescopic tube 20. The telescopic part of the second electric telescopic tube passes through the cylinder 27. A first telescopic element is coaxially provided at the end of the cylinder 27 away from the second electric telescopic tube. Preferably, the first telescopic element is a first electric telescopic tube 29. The structure of the first electric telescopic tube 29 is the same as that of the second electric telescopic tube 20, and existing equipment can be used. It will not be described in detail here. The first electric telescopic tube 29 is directly fixed to the end of the cylinder 27 or fixed to the end of the second electric telescopic tube 20 to achieve fixation to the cylinder 27. A rotating nozzle 30 is provided at the end of the first electric telescopic tube 29. The rotating nozzle 30 can adopt an existing structure and can use the centrifugal force and reaction force of the sprayed water to drive itself to rotate, thereby achieving rotating spray.

[0045] The cylinder 27 has airbags 24 at both ends. The airbags 24 are annular airbags that are fitted around the outer periphery of the cylinder 27. In order to limit the axial movement of the airbags 24, the cylinder 27 has airbag slots 23 at both ends. The inner part of the airbag 24 is inserted into the airbag slot 23, and a sealing gel layer 31 is provided between the airbag and the airbag slot 23.

[0046] The outer side of the airbag 24 is provided with a water-stop strip 28, which is used to seal and fit with the inner side of the pipe.

[0047] After the airbags 24 at both ends are sealed to the inner side of the pipe by the water-stop strip 28, the outer side of the cylinder 27 between the two airbags 24 and the inner side of the pipe form a sealed space.

[0048] like Figure 4 As shown, both airbags 24 are connected to air tubes 37. The air tubes 37 pass through the cylinder 27 and the second electric telescopic tube 20 and are connected to the inflation port 18 located on the rear side of the pipe box 19.

[0049] like Figure 6 As shown, the cylindrical part between the two airbags 24 is provided with a water outlet, which is used to inject water into the formed sealed space. A one-way valve 25 is provided at the water outlet, which allows water to flow from the inside of the cylinder 27 to the external sealed space and prevents it from flowing in the opposite direction.

[0050] To improve water injection efficiency, multiple water outlets are provided, preferably three.

[0051] The water outlet is connected to the first water injection pipe 9, which passes through the second electric telescopic pipe 20 and the internal space of the pipe box 19 and is then connected to the first water pump installed at the rear end of the workbench surface.

[0052] A second water pump 5 is also provided at the rear end of the workbench surface. The second water pump 5 is also connected to one end of the second water injection pipe 10. The second water injection pipe 10 passes sequentially through the pipe box 19, the second electric telescopic pipe 20, the cylinder 27, and the first electric telescopic pipe 29 before connecting to the rotating nozzle 30 for injecting water into the rotating nozzle. The end of the second water injection pipe 10 is provided with a rigid pipe section, which is rotatably connected to the rotating nozzle and fixed to the end of the first electric telescopic pipe 29. The connection method and working principle of the rotating nozzle 30 can be achieved using existing technology, and will not be described in further detail here.

[0053] Preferably, the remaining portions of the first water injection pipe 9 and the second water injection pipe 10 are made of flexible tubing.

[0054] The first water pump is equipped with a first water inlet 7, and the second water pump is equipped with a second water inlet 8, which are used to connect to the water source through pipelines.

[0055] In this embodiment, by installing a water pump assembly on the vehicle body, a larger water pressure can be provided to the first water injection pipe 9 and the second water injection pipe 10.

[0056] like Figure 2 As shown, a first sleeve 22 is provided on the front side of the cylinder 27. The first sleeve 22 is fitted around the telescopic part of the second electric telescopic tube 20 and is rotatably connected to the telescopic part of the second electric telescopic tube 20 in a sealed manner. The first sleeve 22 is connected to a rotation drive mechanism fixed to the telescopic part of the second electric telescopic tube 20. The rotation drive mechanism includes a motor 39, which is fixed on a motor fixing sleeve. The motor fixing sleeve is fitted around the telescopic part of the second electric telescopic tube 20 and is fixedly connected to the telescopic part of the second electric telescopic tube 20 by bolts 36. The output shaft of the motor 39 is connected to a first gear. The first gear meshes with a second gear 38. The second gear 38 is coaxially fixed with the first sleeve 22. The motor 39 can drive the rotation of the first sleeve 22 through the first gear and the second gear 38.

[0057] like Figure 5 As shown, the inner side of the first sleeve 22 is sealed and rotatably connected to the outer side of the second electric telescopic tube 20, and is provided with an annular groove. The annular groove is connected to one end of a plurality of connecting channels that are equally spaced along the circumferential direction. The other end of the connecting channel extends to the outer side of the first sleeve, and a third telescopic element is provided at the end of the connecting channel. The third telescopic element is arranged radially along the first sleeve 22. Preferably, the third telescopic element is a third electric telescopic tube 26, and the internal space of the third electric telescopic tube 26 is connected to the internal space of the annular groove through the connecting channel.

[0058] The second electric telescopic tube 20 is provided with a sealing grease outlet on its tube wall. The sealing grease outlet is connected to the internal space of the annular groove and is connected to the sealing grease delivery tube 32.

[0059] The fixed part of the third electric telescopic tube 26 is fixed to the first sleeve 22, and the top end of its telescopic part is provided with a bent end facing the airbag so that the third electric telescopic tube can spray sealing grease to the sealing position between the outer edge of the airbag and the pipe.

[0060] The rear side of the cylinder 27 is provided with a second sleeve, which is rotatably and sealed to the fixed part of the first electric telescopic tube 29. The second sleeve is connected to the rotation drive mechanism provided in the fixed part of the first electric telescopic tube 29. The rotation drive mechanism is a motor, which is fixed to the fixed part of the first electric telescopic tube 29 through a motor fixing sleeve. The output shaft of the motor is connected to a third gear, which meshes with a fourth gear. The fourth gear is coaxially fixed to the second sleeve. The inner side of the second sleeve is provided with an annular groove, which communicates with multiple connecting channels provided in the cylinder wall of the second sleeve. The connecting channels extend to the outer side of the second sleeve, and a fourth telescopic element is correspondingly provided on the outer side of the second sleeve. The fourth telescopic element is a fourth electric telescopic tube, and the internal space of the fourth electric telescopic tube communicates with the internal space of the connecting channels. The fixed part of the first electric telescopic tube 29 is provided with a sealing grease outlet, which communicates with the internal space of the annular groove of the second sleeve. The sealing grease outlet is connected to the sealing grease conveying pipe 32. The sealing grease conveying pipe 32 passes through the fixed part of the first electric telescopic tube 29 and the second electric telescopic tube 20 and then connects to the sealing grease conveying pipe interface 17 provided in the pipe box.

[0061] The top end of the fourth electric telescopic tube is provided with a bent section facing the airbag direction, so that the fourth electric telescopic tube can spray sealing grease towards the outer edge of the airbag on the outside of the cylinder and the part where the pipe is sealed.

[0062] The third electric telescopic tube 26 and the fourth electric telescopic tube serve as telescopic elements for sealing grease spraying.

[0063] To facilitate the recovery of the entire permeability testing device, the rear end of the vehicle body is provided with a recovery line interface 3, which is connected to a recovery cable. The entire permeability testing device can be lifted to the ground via the recovery cable.

[0064] In this embodiment, the camera is connected to the control system and can transmit the acquired images to the control system. The control system is connected to the remote monitoring platform and can transmit the images to the remote monitoring platform for display. The electric telescopic tube, electric lifting rod, motor, water pump, etc. are all connected to the control system and are controlled by the control system to operate.

[0065] The working method of the pipeline permeability testing device in this embodiment is as follows:

[0066] Select the airbag 24 according to the pipe diameter, apply sealing gel to the airbag slot 23, put the airbag 24 into the airbag slot 23, and connect the inflation port 18 to the air pump on the ground through the air pipe.

[0067] Connect the water pump assembly 5 to the water source via a water pipe, connect the sealed grease delivery pipe interface 17 to the grease pump above ground via a delivery pipe, and connect the recycling line interface 3 to the recycling cable.

[0068] The entire detection device is lowered into the pipe 33 to be inspected by retrieving the cable. The camera 12 and the lighting element 11 are turned on. The height of the worktable 6 is adjusted by the third electric lifting rod 4, and the height of the semi-circular guide rail 15 is adjusted by the second electric lifting rod 21 to avoid obstructing the lifting of the worktable 6. The height of the camera 12 is adjusted by the first electric lifting rod 13 to prevent the airbag 24 from blocking the observation line of sight.

[0069] The mobile vehicle moves inside the pipe 33 to be inspected. The camera 12 adjusts its position and posture via the electric vehicle and the rotating platform 14 to collect images of the inner surface of the pipe 33 from all directions. When the camera captures the damaged area inside the pipe 33, the staff injects water into the second water pump through the second water inlet 8. The second water pump sends the water into the rotating nozzle 30 through the second water inlet pipe 10. The rotating nozzle 30 sprays cleaning water. The rotating nozzle 30 moves by the extension and retraction of the first electric telescopic pipe 29. The rotating nozzle 30 rotates and sprays water to clean the damaged area.

[0070] Before the permeability test, the rotating nozzle can be used to clear the local damaged area, so that the airbag 24 can better seal and fit with the inner side of the pipe wall through the water-stop strip 28, ensuring the sealing of the sealed space formed between the local damaged area and the cylinder 27, ensuring the smooth progress of the test and the accuracy of the test results.

[0071] like Figure 7 As shown, after the dredging is completed, the second electric telescopic pipe 20 works, driving the cylinder 27 to move, so that the damaged area of ​​the pipe is located between the two airbags 24 at both ends of the cylinder. The staff starts the air pump, which inflates the airbag 24. The airbag 24 expands, so that the outside of the airbag 24 is attached to the inner surface of the pipe through the water-stop strip 28.

[0072] Adjust the lengths of the third electric telescopic tube 26 and the fourth electric telescopic tube so that their grease outlet ends face the sealing position between the outer edge of the airbag 24 and the pipe 33.

[0073] The staff started the grease pump and the motor at the same time. The first sleeve 22 and the second sleeve rotated. The sealing grease passed through the sealing grease delivery pipe 32, the annular groove and the connecting channel and was sprayed out by the third electric telescopic pipe 26 and the fourth electric telescopic pipe for further sealing, which further ensured the accuracy of the test results.

[0074] After sealing is completed, the staff starts the first water pump and injects water into the sealed space formed by the airbag 24, the cylinder 27 and the damaged area of ​​the pipe through the first water injection pipe 9. The water injection continues, and at the same time the position of the camera 12 is adjusted to observe the sealing grease on the outside of the airbag 24. If there is any leakage, the sealing grease is applied again to ensure the accuracy of the test results. The water injection continues for a set time, and the staff records the water injection volume and water injection time for subsequent data analysis and result evaluation.

[0075] If there is water leakage in pipe 33, it will cause seepage water 35 to be released into the surrounding soil 34. Specifically, first, determine the water injection volume when inspecting an undamaged pipe, then calculate the seepage volume Q using the formula Q = W / (T*L), where W is the water injection volume, T is the seepage time, and L is the length of the inspected pipe section (in minutes per meter). Next, calculate the permeability q using the formula q = Q / PL, where P is the average water pressure within the inspection area and L is the length of the inspection section. Finally, calculate the pipe permeability coefficient using the formula K = QL / AHt, where Q is the seepage volume, L is the length of the inspected pipe section, A is the cross-sectional area of ​​the inspection area, and H is the water level difference. Workers can then determine the pipe's seepage characteristics and formulate repair methods accordingly.

[0076] Using the same method, the mobile vehicle travels along the pipeline to complete the inspection of the entire pipeline. After the inspection is completed, the mobile vehicle exits the pipeline, and the entire inspection device is retrieved to the ground via a cable recovery system.

[0077] The detection device and method of this embodiment allow the traveling vehicle to move along the inside of the pipeline and use the camera 12 to collect images of the pipeline interior, thereby obtaining the location of local damage. A second electric telescopic tube 20 is provided, which allows the local damage location to be positioned between two airbags 24 on the cylinder. After the airbags 24 are inflated, they can be sealed at both ends of the local damage location by a water-stop strip 28, forming a sealed space between the cylinder 27 and the pipeline between the two airbags 24. After water is injected through the first water injection pipe 9, the permeability of the damaged area can be detected. During the detection process, the traveling vehicle enables permeability detection only on the local damaged area of ​​the pipeline, eliminating the need for water injection detection of the entire pipeline, making it suitable for pipeline inspection in actual field applications.

[0078] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A device for detecting the permeability of a locally damaged area in a pipeline, characterized in that, The device includes a traveling vehicle, with a first adjustment mechanism at the top of the traveling vehicle. The first adjustment mechanism is connected to an image acquisition element to adjust the position and orientation of the image acquisition element. The traveling vehicle is connected to a permeability detection mechanism located at the front of the traveling vehicle through a second adjustment mechanism. The permeability detection mechanism includes a cylinder, with air bladders at both ends of the cylinder. A water outlet is provided in the part of the cylinder between the two air bladders. A one-way valve is provided at the water outlet, and the water outlet is connected to a first water injection pipe. The cylinder has airbag slots at both ends. The airbag has a ring structure, with its inner side fixed in the airbag slot and its outer circumferential surface provided with a water-stop strip. The cylinder is provided with sleeves on both the front and rear sides. The sleeves are connected to the rotation drive mechanism to achieve rotation around their own axis. The outer circumference of the sleeve is provided with a sealing grease spraying telescopic element. The sealing grease spraying telescopic element is connected to the sealing grease conveying pipeline. The end of the sealing grease spraying telescopic element is provided with a bent section to spray sealing grease toward the sealing position of the airbag and the inner side of the pipeline. The first adjustment mechanism includes a semi-circular guide rail, on which a sliding element is provided. The sliding element is connected to a first rotary element, which is connected to an image acquisition element through a first lifting element. The two ends of the semi-circular guide rail are connected to a second lifting element installed on the traveling vehicle.

2. The permeability detection device for a partially damaged area of ​​a pipeline as described in claim 1, wherein one end of the cylinder is connected to a second adjusting mechanism, and the other end is provided with a rotating nozzle, which is connected to a second water injection pipe.

3. The device for detecting the permeability of a partially damaged area in a pipeline as described in claim 2, characterized in that, Both the first and second water injection pipes are connected to the water pump assembly installed on the second regulating mechanism.

4. The permeability detection device for locally damaged areas of a pipeline as described in claim 2, characterized in that, The rotating nozzle is connected via a first telescopic element to achieve position adjustment along the axis of the cylinder, and the first telescopic element is connected to the cylinder.

5. The device for detecting the permeability of a partially damaged area in a pipeline as described in claim 1, characterized in that, An illumination element is provided above the image acquisition element.

6. The permeability detection device for locally damaged areas of a pipeline as described in claim 1, characterized in that, The second adjustment mechanism includes a third lifting element installed on the vehicle body. The third lifting element is connected to the worktable. The front end of the worktable is connected to the cylinder through a second telescopic element to drive the cylinder to move along its own axis.

7. The permeability detection device for locally damaged areas of a pipeline as described in claim 1, characterized in that, The rear end of the vehicle is connected to a recovery cable.

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