Method and device for detecting leakage position of reservoir culvert

Abstract

The present invention discloses a method and device for detecting leakage sites of a reservoir culvert, wherein the device comprises a leakage detection device inserted into the reservoir culvert, and the leakage detection device comprises a first pneumatic expansion plugging component and a second pneumatic expansion plugging component movably inserted into the reservoir culvert. The present invention realizes sealing and plugging of both ends of the reservoir culvert by setting the first pneumatic expansion plugging component and the second pneumatic expansion plugging component. By setting the hydraulic pump, pressure pipe, water pressure gauge, water tank and telescopic hose, it is convenient to fill the reservoir culvert with water and hold the pressure. By using the method of filling with water and holding the pressure to judge whether the water pressure has changed, it can realize mechanized and precise detection of whether there is leakage, which is not affected by internal impurities, improves detection accuracy and stability, and reduces the risk of misjudgment. In combination with the set telescopic thread drive component, the first thread drive component, the rectangular tube and the movable plate, it can change the plugging detection position and realize step-by-step and precise confirmation of the leakage position.

Description

Technical Field

[0001] The present invention relates to the technical field of reservoir culvert detection, in particular to a method and a device for detecting leakage locations of reservoir culverts. Background Art

[0002] The reservoir discharge culvert serves as a transmission channel for downstream irrigation and water supply and is one of the important hydraulic structures. After a certain period of use, the reservoir discharge culvert may develop cracks, leakage and other phenomena. If it is not discovered and handled in time, it will cause more serious accidents. Therefore, it is necessary to regularly inspect the reservoir discharge culvert when the reservoir is not releasing water.

[0003] Existing detection of reservoir discharge culverts, such as the reservoir discharge culvert leakage detection device disclosed in CN216479632U, includes a detection end and a processing control end that communicate with each other; the detection end includes a device body, a walking unit and a detection unit, and the device body is provided with a control unit, a walking unit and a detection unit, which are respectively electrically connected to the control; the processing control end includes an operation unit, a processing unit and a display unit; the processing control end also includes a prompt unit; the detection end also includes a road surface recognition unit and a cleaning robot arm; the road surface recognition unit is fixed on the front side of the device body, and the road surface recognition unit includes a camera and a distance sensor; the camera and the distance sensor are respectively electrically connected to the control unit; the cleaning robot arm is installed on the front side of the device body, and the free end of the cleaning robot arm is provided with a cleaning part, and the cleaning robot arm is electrically connected to the control unit; using this device, the reservoir discharge culvert can be smoothly detected.

[0004] The aforementioned patent utilizes a sensor inserted into a reservoir culvert, combined with a cleaning robotic arm to clean the inside of the culvert and then perform inductive analysis and testing. This is also a commonly used inductive or acoustic detection method in culvert inspection work; however, this method has the following shortcomings:

[0005] Because there are many impurities inside the culvert, it is difficult to clean them out. Impurities will still remain and accumulate inside, causing problems during induction or acoustic wave detection. Using induction detection, the accuracy of leak detection is not ideal, and there is a risk of misjudgment, which affects subsequent maintenance work. There is no existing public technology for mechanical and stable leakage detection of reservoir culverts. In view of this, we propose a method and device for detecting leakage locations in reservoir culverts to solve the above problems. Summary of the Invention

[0006] The object of the present invention is to provide a method and device for detecting leakage locations of reservoir culverts, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a device for detecting leakage locations in a reservoir culvert, comprising a leakage detection device inserted into the reservoir culvert, the leakage detection device comprising a first inflatable sealing assembly and a second inflatable sealing assembly movably inserted into the reservoir culvert, a movable plate being fixedly mounted on the right side of the second inflatable sealing assembly, the first inflatable sealing assembly and the second inflatable sealing assembly being respectively used to seal and plug both ends of the reservoir culvert;

[0008] A water pressure pump is fixedly installed on the right side of the movable plate, and the water outlet of the water pressure pump is connected to and fixed with a water pressure gauge, and the water outlet of the water pressure gauge is connected to and fixed with a pressure pipe, and the left end of the pressure pipe passes through the second inflatable expansion and plugging assembly and extends into the reservoir culvert. A bottom plate is provided under the movable plate, and the four corners of the bottom of the bottom plate are rotatably mounted with universal wheels with locks, and the top right side of the bottom plate is fixedly connected to a support plate, and the top of the support plate is fixedly connected to a top plate, and a water tank is fixedly installed on the top of the top plate, and the bottom of the water tank is connected to and fixed with an L-shaped pipe, and the left end of the L-shaped pipe is connected to the water inlet of the water pressure pump and a telescopic hose is fixed thereto, and a storage box compatible with the first inflatable expansion and plugging assembly is fixedly installed on the left side of the water tank;

[0009] The right side of the movable plate is provided with a rectangular tube with a closed structure at the right end, and a telescopic thread drive assembly fixedly connected to the bottom right side of the movable plate is installed in the rectangular tube, and a first thread drive assembly fixedly connected to the right side of the bottom right side of the rectangular tube is installed on the top of the bottom plate. The right ends of the first thread drive assembly and the telescopic thread drive assembly are fixedly connected to a synchronous wheel, and the two synchronous wheels are connected to the same synchronous belt for transmission. The right side of the support plate is fixedly installed with an output shaft and a drive motor fixedly connected to the right side of the synchronous wheel above. The telescopic thread drive assembly is used to drive the movable plate to move left, and the first thread drive assembly is used to drive the rectangular tube to move left.

[0010] Preferably, the first inflatable expansion and sealing component includes a first air bag movably mounted in the reservoir culvert, the left bottom of the first air bag is connected to and fixed with a first pressure gauge, and the air inlet of the first pressure gauge is connected to and fixed with the air outlet of the first air pump; the first air bag, the first pressure gauge and the first air pump are arranged in coordination, and the first air pump is used to inflate the first air bag to make it expand and seal the left end of the reservoir culvert.

[0011] Preferably, the second inflatable expansion and sealing component includes a second air bag movably mounted in the reservoir culvert, the right bottom of the second air bag is connected to and fixed with a second pressure gauge, the air inlet of the second pressure gauge is connected to and fixed with the air outlet of the second air pump, the right side of the second air pump is fixedly connected to the left bottom of the movable plate, and the second air bag is fixedly mounted on the pressure pipe; the second air bag, the second pressure gauge and the second air pump are arranged to cooperate, and the second air pump is used to inflate the second air bag to make it expand and seal the inside of the right end of the reservoir culvert.

[0012] Preferably, the telescopic thread drive assembly includes a rectangular rod slidably sleeved in a rectangular tube, a first screw is rotatably connected to the right inner wall of the rectangular tube, the rectangular rod is threadedly sleeved on the first screw, a square hole is opened at the right end of the first screw, a square rod is slidably sleeved in the square hole, the right end of the square rod is fixedly connected to the left side of the synchronous wheel above, and the left end of the rectangular rod is fixedly connected to the right bottom of the movable plate; the square rod, square hole, first screw and rectangular rod are matched, and when the square rod rotates, the first screw is driven to rotate by utilizing the corners of the square rod and the square hole to fit together, and the rotation of the first screw drives the rectangular rod to slide leftward in the rectangular tube.

[0013] Preferably, the first threaded drive assembly includes a second screw rotatably mounted on the top of the base plate, a slider is threadedly sleeved on the second screw, the top of the slider is fixedly connected to the bottom right side of the rectangular tube, a T-shaped slide rail is embedded and fixed on the top of the base plate, the slider is slidably mounted on the T-shaped slide rail, and the right end of the second screw is fixedly connected to the left side of the synchronous wheel below; the second screw, slider and T-shaped slide rail are arranged to cooperate, and when the second screw rotates, the slider is driven to move to the left, and the slider drives the rectangular tube to move to the left, and the left movement of the rectangular tube is used to drive the rectangular rod to move to the left, and the left movement force of the above-mentioned rectangular rod due to the rotation of the first screw is cooperated to realize double drive left movement, and then realize double drive left movement of the movable plate, and the double drive method can be used to perform double distance transportation in a constant space.

[0014] Preferably, two support rods are fixedly connected between the left side of the bottom of the top plate and the top of the bottom plate, and the rectangular tube is located between the two support rods.

[0015] Preferably, a battery is fixedly installed on the left bottom of the water tank, and the hydraulic pump, the first air pump, the second air pump and the drive motor are all electrically connected to the battery.

[0016] Preferably, a thread groove is formed at the right end of the rectangular rod and is threadably connected to the first screw rod.

[0017] Preferably, both sides of the second airbag are provided with through holes for bonding and fixing to the outer side of the pressure tube.

[0018] The present invention also discloses a method for detecting leakage locations of reservoir culverts, comprising the following steps:

[0019] S1: Insert the first airbag from the left end of the reservoir culvert pipe, turn on the first air pump to inflate, and gas enters the first airbag through the first pressure gauge. The first airbag expands to seal the left end of the reservoir culvert pipe. When the pressure detected by the first pressure gauge reaches 0.5-0.8 MPa, turn off the first air pump;

[0020] S2: Move the bottom plate to the left to drive the second airbag to be inserted from the right end of the reservoir culvert pipe. Turn on the second air pump to inflate the air. The gas enters the second airbag through the second pressure gauge. The second airbag expands to seal the right end of the reservoir culvert pipe. When the pressure detected by the second pressure gauge reaches 0.5-0.8 MPa, turn off the second air pump.

[0021] S3: After both ends of the reservoir culvert are blocked, turn on the water pressure pump to extract water from the water tank through the telescopic hose and L-shaped tube in sequence, and pump it into the reservoir culvert through the water pressure gauge. When the water pressure gauge detects that the water pressure reaches 0.3Mp, turn off the water pressure pump and observe whether the pressure on the water pressure gauge changes. No change means there is no leak, and a decrease in water pressure means there is a leak in the reservoir culvert. Accurate detection is achieved by holding the pressure.

[0022] S4: When leakage occurs and the sealing position of the second airbag is changed for further confirmation, the gas in the second airbag is released using the second pressure gauge, and the drive motor is started in the forward direction. With the cooperation of the two synchronous wheels and the synchronous belt, the square rod and the second screw are synchronously driven to rotate. The rotation of the second screw drives the slider to move left, and the slider drives the rectangular tube to move left. The rectangular tube drives the first screw to slide leftward on the square rod through the square hole, and the first screw drives the rectangular rod to move left.

[0023] S5: When the square rod described in S4 rotates, it drives the first screw to rotate through the square hole. The rotation of the first screw drives the rectangular rod to slide to the left in the rectangular tube. The leftward movement of the rectangular rod achieved by the rotation of the second screw realizes double leftward movement of the rectangular rod. The rectangular rod drives the movable plate to move double to the left. The movable plate drives the water pressure pump to the left to stretch the telescopic hose. At the same time, the movable plate drives the second air bag to move to the left through the second air pump and the second pressure gauge in turn, thereby changing the blocking depth position of the second air bag. Then, the pressure holding blocking detection work can be carried out again. By analogy, the leakage position can be accurately confirmed step by step by changing the blocking position in sequence.

[0024] S6: After use, the gas in the first airbag and the second airbag is released using the first pressure gauge and the second pressure gauge respectively, the blockage is released, and the airbag is removed from the reservoir culvert. The first inflatable sealing assembly consisting of the first airbag, the first pressure gauge and the first air pump is placed in the storage box to achieve integrated placement and movement.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. This device for detecting leakage in reservoir culverts achieves sealing and plugging of both ends of the reservoir culvert through the cooperation of the first and second inflatable plugging components.

[0027] 2. This device for detecting leakage in reservoir culverts, through the cooperation of a hydraulic pump, a pressure pipe, a water pressure gauge, a water tank and a telescopic hose, can fill the reservoir culvert with water and hold the pressure after the two ends of the reservoir culvert are blocked. By using the water filling and holding the pressure to determine whether the water pressure changes, it can achieve mechanized and accurate detection of whether there is leakage in the reservoir culvert, which is not affected by internal impurities, and improves the accuracy and stability of detection;

[0028] 3. This device for detecting leakage in reservoir culverts can change the blocking detection position at the right end by cooperating with the second inflatable expansion blocking component, drive motor, telescopic thread drive component, first thread drive component, rectangular tube and movable plate. By gradually changing the blocking position at the right end, the leakage position can be accurately confirmed step by step, which is convenient for personnel to accurately confirm.

[0029] The present invention realizes the sealing and plugging of both ends of the reservoir culvert by providing a first inflatable expansion plugging component and a second inflatable expansion plugging component. The water pressure pump, pressure pipe, water pressure gauge, water tank and telescopic hose are provided, which facilitates the filling of water into the reservoir culvert and the holding of pressure. The water filling and pressure holding are used to judge whether the water pressure has changed to realize mechanized and precise detection of whether there is a leakage, which is not affected by internal impurities, improves the detection accuracy and stability, and reduces the risk of misjudgment. In combination with the provided telescopic threaded drive component, the first threaded drive component, the rectangular tube and the movable plate, the plugging detection position can be changed, and the leakage position can be accurately confirmed step by step by changing the plugging position, which facilitates personnel to accurately confirm the leakage position. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the main cross-sectional structure of the present invention;

[0032] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure of part A;

[0033] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure of part B in FIG;

[0034] Figure 5 It is a schematic diagram of the three-dimensional structure of the rectangular rod, the first screw rod and the square rod connecting piece of the present invention.

[0035] In the figure: 100, reservoir culvert; 1, first air bag; 2, first air pressure gauge; 3, first air pump; 4, bottom plate; 5, movable plate; 6, second air pump; 7, second air pressure gauge; 8, second air bag; 9, pressure pipe; 10, water pressure gauge; 11, water pressure pump; 12, support plate; 13, top plate; 14, water tank; 15, L-shaped pipe; 16, telescopic hose; 17, rectangular pipe; 18, rectangular rod; 19, first screw; 20, square rod; 21, synchronous wheel; 22, synchronous belt; 23, drive motor; 24, second screw; 25, slider; 26, T-shaped slide rail; 27, square hole; 28, universal wheel with lock; 29, storage box; 30, support rod. Implementation Method

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] like Figures 1 to 5 As shown, the present embodiment provides a device for detecting leakage locations in a reservoir culvert, including a leakage detection device inserted into a reservoir culvert 100. The leakage detection device includes a first inflatable sealing component and a second inflatable sealing component movably inserted into the reservoir culvert 100. A movable plate 5 is fixedly mounted on the right side of the second inflatable sealing component. The first inflatable sealing component and the second inflatable sealing component are respectively used to seal and plug both ends of the reservoir culvert 100.

[0038] A hydraulic pump 11 is fixedly installed on the right side of the movable plate 5, and the water outlet of the hydraulic pump 11 is connected and fixed with a water pressure gauge 10, and the water outlet of the water pressure gauge 10 is connected and fixed with a pressure pipe 9. The left end of the pressure pipe 9 passes through the second inflatable expansion plugging component and extends into the reservoir culvert 100. A bottom plate 4 is provided below the movable plate 5, and the four corners of the bottom of the bottom plate 4 are rotatably installed with a locking universal wheel 28. The top right side of the bottom plate 4 is fixedly connected with a support plate 12, and the top of the support plate 12 A top plate 13 is fixedly connected, a water tank 14 is fixedly mounted on the top of the top plate 13, an L-shaped tube 15 is connected to and fixed to the bottom of the water tank 14, a telescopic hose 16 is fixed between the left end of the L-shaped tube 15 and the water inlet of the hydraulic pump 11, and a storage box 29 adapted for the first inflatable expansion plugging assembly is fixedly mounted on the left side of the water tank 14, and the storage box 29 is provided for storing the first inflatable expansion plugging assembly as a whole when not in use, eliminating the need for separate transportation;

[0039] The right side of the movable plate 5 is provided with a rectangular tube 17 with a closed structure at the right end. Two support rods 30 are fixedly connected between the bottom left side of the top plate 13 and the top of the bottom plate 4. The rectangular tube 17 is located between the two support rods 30, which supports the top plate 13. A telescopic thread drive assembly fixedly connected to the bottom right side of the movable plate 5 is installed in the rectangular tube 17. A first thread drive assembly fixedly connected to the bottom right side of the rectangular tube 17 is installed on the top of the bottom plate 4. The right ends of the first thread drive assembly and the telescopic thread drive assembly are both fixedly connected to a synchronous wheel 21. The two synchronous wheels 21 are connected to the same synchronous belt 22 for transmission. A drive motor 23 with an output shaft fixedly installed on the right side of the synchronous wheel 21 above is fixedly connected to the right side of the support plate 12. The telescopic thread drive assembly is used to drive the movable plate 5 to move left, and the first thread drive assembly is used to drive the rectangular tube 17 to move left.

[0040] Specifically, the first inflatable sealing component includes a first airbag 1 that is movably mounted inside the reservoir culvert 100. The left bottom of the first airbag 1 is connected to and fixed with a first pressure gauge 2, and the air inlet of the first pressure gauge 2 is connected to and fixed with the air outlet of the first air pump 3. The first airbag 1, the first pressure gauge 2 and the first air pump 3 are arranged in coordination, and the first air pump 3 is used to inflate the first airbag 1, so that it expands and seals the left end of the reservoir culvert 100.

[0041] Furthermore, the second inflatable sealing assembly includes a second airbag 8 movably mounted in the reservoir culvert 100, the right bottom of the second airbag 8 is connected to and fixed with a second pressure gauge 7, the air inlet of the second pressure gauge 7 is connected to and fixed with an air outlet of the second air pump 6, the right side of the second air pump 6 is fixedly connected to the left bottom of the movable plate 5, the second airbag 8 is fixedly mounted on the pressure tube 9, the left bottom of the water tank 14 is fixedly installed with the battery, the hydraulic pump 11, the first air pump 3, the second air pump 6 and the drive motor 23 are all electrically connected to the battery, and through holes are opened on both sides of the second airbag 8, which are bonded and fixed to the outside of the pressure tube 9, so as to allow the pressure tube 9 to pass through; the second airbag 8, the second pressure gauge 7 and the second air pump 6 are arranged to cooperate, and the second air pump 6 is used to inflate the second airbag 8, so that it expands and seals the right end of the reservoir culvert 100.

[0042] Furthermore, the telescopic thread drive assembly includes a rectangular rod 18 slidably sleeved in the rectangular tube 17, and a first screw 19 is rotatably connected to the right inner wall of the rectangular tube 17, wherein a rotation hole is opened on the inner wall of the right end of the rectangular tube 17, and a first bearing is fixedly sleeved in the rotation hole, and the inner side of the inner ring of the first bearing is fixedly connected to the outer side of the first screw 19. The first screw 19 is rotatably connected to the right end inner wall of the rectangular tube 17 through the first bearing, which plays the effect of rotatably installing the first screw 19. The rectangular rod 18 is threadedly sleeved on the first screw 19, wherein the right end of the rectangular rod 18 is opened with a thread groove threadedly connected to the first screw 19, and the first screw is used to rotate the first screw. The threaded connection relationship between 19 and the thread groove facilitates the effect of driving the rectangular rod 18 to move left and right when the first screw 19 rotates. A square hole 27 is provided at the right end of the first screw 19. A square rod 20 is slidably sleeved in the square hole 27. The right end of the square rod 20 is fixedly connected to the left side of the synchronous wheel 21 above, and the left end of the rectangular rod 18 is fixedly connected to the right bottom of the movable plate 5. The square rod 20, the square hole 27, the first screw 19 and the rectangular rod 18 are matched. When the square rod 20 rotates, the first screw 19 is driven to rotate by the corners of the square hole 27. The first screw 19 rotates to drive the rectangular rod 18 to slide left in the rectangular tube 17.

[0043] Furthermore, the first threaded drive assembly includes a second screw 24 rotatably mounted on the top of the base plate 4, wherein the top of the base plate 4 is fixedly connected to two second bearings, the inner side of the inner ring of the second bearing is fixedly connected to the outer side of the second screw 24, and the second screw 24 is rotatably mounted on the top of the base plate 4 through the second bearing, which plays the effect of rotatably mounting the second screw 24, and a slider 25 is threadedly sleeved on the second screw 24, wherein a threaded hole threadedly connected to the second screw 24 is opened on the right side of the slider 25, and the slider 25 is threadedly sleeved on the second screw 24 through the threaded hole, and the threaded connection relationship between the second screw 24 and the threaded hole is utilized to facilitate the effect of driving the slider 25 to move left and right when the second screw 24 rotates, and the top of the slider 25 is fixedly connected to the bottom right side of the rectangular tube 17, and a T-shaped slide rail 26 is embedded and fixed on the top of the base plate 4, wherein the top of the base plate 4 is opened with a threaded hole threadedly connected to the T-shaped slide The bottom of the rail 26 is fixedly connected to the embedding groove, and the T-shaped slide rail 26 is embedded and fixed to the top of the bottom plate 4 through the embedding groove, and the slider 25 is slidably installed on the T-shaped slide rail 26, wherein the bottom of the slider 25 is provided with a T-shaped slide groove slidably connected to the T-shaped slide rail 26, and the slider 25 is slidably installed on the T-shaped slide rail 26 through the T-shaped slide groove, and the right end of the second screw 24 is fixedly connected to the left side of the synchronous wheel 21 below; the second screw 24, the slider 25 and the T-shaped slide rail 26 are coordinated, and when the second screw 24 rotates, the slider 25 is driven to move to the left, and the slider 25 drives the rectangular tube 17 to move to the left, and the left movement of the rectangular tube 17 is used to realize the left movement of the rectangular rod 18, and the left movement force of the above-mentioned rectangular rod 18 by the rotation of the first screw 19 is realized, thereby realizing double drive left movement, and then realizing double drive movable plate 5 left movement, and utilizing the double drive method to perform double distance transportation in a constant space.

[0044] This embodiment also discloses a method for detecting leakage locations of reservoir culverts, comprising the following steps:

[0045] S1: Insert the first airbag 1 from the left end of the reservoir culvert 100, turn on the first air pump 3 to inflate, and the gas enters the first airbag 1 through the first pressure gauge 2. The first airbag 1 expands to seal the left end of the reservoir culvert 100. When the pressure detected by the first pressure gauge 2 reaches 0.5-0.8 MPa, turn off the first air pump 3 to achieve sealing of the left end of the reservoir culvert 100.

[0046] S2: Move the bottom plate 4 to the left to drive the second airbag 8 to be inserted from the right end of the reservoir culvert 100, turn on the second air pump 6 to inflate, and the gas enters the second airbag 8 through the second pressure gauge 7. The second airbag 8 expands to seal the right end of the reservoir culvert 100. When the pressure detected by the second pressure gauge 7 reaches 0.5-0.8 MPa, turn off the second air pump 6 to achieve sealing of the right end of the reservoir culvert 100.

[0047] S3: After both ends of the reservoir culvert 100 are blocked, the hydraulic pump 11 is turned on to extract water from the water tank 14 through the telescopic hose 16 and the L-shaped tube 15 in sequence, and pumped into the reservoir culvert 100 through the water pressure gauge 10. The water pressure gauge 10 detects that the water pressure reaches 0.3 MPa, and the hydraulic pump 11 is turned off. Since both ends of the reservoir culvert 100 are blocked, water pressure is generated in the reservoir culvert 100. At this time, the pressure on the water pressure gauge 10 is observed to see if there is any change. No change indicates no leakage, and a decrease in water pressure indicates a leakage in the reservoir culvert 100. Accurate detection is achieved by holding the pressure, which is not affected by internal impurities.

[0048] S4: When leakage occurs and the sealing position of the second airbag 8 is changed for further confirmation, the gas in the second airbag 8 is released using the second barometer 7, and the drive motor 23 is started in the forward direction. With the cooperation of the two synchronous wheels 21 and the synchronous belt 22, the square rod 20 and the second screw 24 are synchronously driven to rotate. The second screw 24 rotates to drive the slider 25 to move leftward, and the slider 25 drives the rectangular tube 17 to move leftward. The rectangular tube 17 drives the first screw 19 to slide leftward on the square rod 20 through the square hole 27, and the first screw 19 drives the rectangular rod 18 to move leftward.

[0049] S5: When the square rod 20 in S4 rotates, it drives the first screw 19 to rotate through the square hole 27. The rotation of the first screw 19 drives the rectangular rod 18 to slide leftward in the rectangular tube 17. The leftward movement of the rectangular rod 18 achieved by the rotation of the second screw 24 is realized, so that the rectangular rod 18 is doubled to the left. The rectangular rod 18 drives the movable plate 5 to move double to the left. The movable plate 5 drives the hydraulic pump 11 to stretch the telescopic hose 16 to the left. At the same time, the movable plate 5 drives the second air bag 8 to move leftward through the second air pump 6 and the second air pressure gauge 7 in turn, changing the blocking depth position of the second air bag 8, so that the pressure holding blocking detection work can be carried out again. By analogy, the leakage position can be accurately confirmed step by step by changing the blocking position in sequence, and the displacement distance can be increased in a constant device space by using the double displacement method;

[0050] S6: After use, the gas in the first airbag 1 and the second airbag 8 is released using the first pressure gauge 2 and the second pressure gauge 7 respectively, the blockage is released, and it is moved out from the reservoir culvert 100, and the first inflation sealing assembly consisting of the first airbag 1, the first pressure gauge 2 and the first air pump 3 is placed in the storage box 29 to achieve integrated placement and movement.

[0051] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A device for detecting leakage locations of a reservoir culvert, comprising a leakage detection device inserted into a reservoir culvert (100), characterized in that: The leakage detection device comprises a first inflatable plugging component and a second inflatable plugging component movably inserted into a reservoir culvert (100), wherein a movable plate (5) is fixedly mounted on the right side of the second inflatable plugging component; A water pressure pump (11) is fixedly installed on the right side of the movable plate (5), the water outlet of the water pressure pump (11) is connected to and fixed with a water pressure gauge (10), the water outlet of the water pressure gauge (10) is connected to and fixed with a pressure pipe (9), the left end of the pressure pipe (9) passes through the second inflatable sealing component and extends into the reservoir culvert (100), a bottom plate (4) is provided below the movable plate (5), and the bottom four corners of the bottom plate (4) are rotatably mounted with universal wheels (28) with locks, the bottom plate ( 4) is fixedly connected to a support plate (12) on the top right side, the support plate (12) is fixedly connected to a top plate (13) on the top, a water tank (14) is fixedly installed on the top of the top plate (13), the bottom of the water tank (14) is connected to and fixed with an L-shaped tube (15), the left end of the L-shaped tube (15) is connected to the water inlet of the hydraulic pump (11) and a telescopic hose (16) is fixed thereto, and a storage box (29) adapted to the first inflatable expansion plugging assembly is fixedly installed on the left side of the water tank (14); The right side of the movable plate (5) is provided with a rectangular tube (17) with a closed structure at the right end, a telescopic thread drive assembly fixedly connected to the bottom right side of the movable plate (5) is installed in the rectangular tube (17), a first thread drive assembly fixedly connected to the right side of the bottom of the rectangular tube (17) is installed on the top of the bottom plate (4), the right ends of the first thread drive assembly and the telescopic thread drive assembly are fixedly connected to a synchronous wheel (21), the two synchronous wheels (21) are connected to the same synchronous belt (22), and a drive motor (23) whose output shaft is fixedly connected to the right side of the upper synchronous wheel (21) is fixedly installed on the right side of the support plate (12); The telescopic thread drive assembly includes a rectangular rod (18) slidably sleeved in a rectangular tube (17), a first screw rod (19) rotatably connected to the right inner wall of the rectangular tube (17), the rectangular rod (18) being threadedly sleeved on the first screw rod (19), a square hole (27) being provided at the right end of the first screw rod (19), a square rod (20) being slidably sleeved in the square hole (27), the right end of the square rod (20) being fixedly connected to the left side of the upper synchronous wheel (21), and the left end of the rectangular rod (18) being fixedly connected to the right bottom of the movable plate (5); The first thread drive assembly includes a second screw (24) rotatably mounted on the top of the base plate (4); a slider (25) is provided on a threaded sleeve of the second screw (24); the top of the slider (25) is fixedly connected to the right side of the bottom of the rectangular tube (17); a T-shaped slide rail (26) is embedded and fixed on the top of the base plate (4); the slider (25) is slidably mounted on the T-shaped slide rail (26); and the right end of the second screw (24) is fixedly connected to the left side of the synchronous wheel (21) below.

2. The device for detecting leakage of a reservoir culvert according to claim 1, characterized in that: The first inflatable sealing assembly comprises a first air bag (1) movably sleeved in a reservoir culvert (100); the left bottom of the first air bag (1) is connected to and fixed with a first air pressure gauge (2); and the air inlet of the first air pressure gauge (2) is connected to and fixed with an air outlet of a first air pump (3).

3. The device for detecting leakage of a reservoir culvert according to claim 2, characterized in that: The second inflatable sealing assembly comprises a second air bag (8) movably sleeved in the reservoir culvert (100); the right bottom of the second air bag (8) is connected to and fixed with a second pressure gauge (7); the air inlet of the second pressure gauge (7) is connected to and fixed with an air outlet of a second air pump (6); the right side of the second air pump (6) is fixedly connected to the left bottom of the movable plate (5); and the second air bag (8) is fixedly sleeved on the pressure pipe (9).

4. The device for detecting leakage of a reservoir culvert according to claim 1, characterized in that: Two support rods (30) are fixedly connected between the left side of the bottom of the top plate (13) and the top of the bottom plate (4), and the rectangular tube (17) is located between the two support rods (30).

5. The device for detecting leakage of a reservoir culvert according to claim 3, characterized in that: A battery is fixedly mounted on the bottom left side of the water tank (14), and the hydraulic pump (11), the first air pump (3), the second air pump (6) and the drive motor (23) are all electrically connected to the battery.

6. The device for detecting leakage of a reservoir culvert according to claim 1, characterized in that: The right end of the rectangular rod (18) is provided with a thread groove threadably connected to the first screw rod (19).

7. The device for detecting leakage of a reservoir culvert according to claim 3, characterized in that: Both sides of the second airbag (8) are provided with through holes that are bonded and fixed to the outer side of the pressure tube (9).

8. A method for detecting leakage locations of a reservoir culvert according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: insert the first airbag (1) from the left end of the reservoir culvert (100), start the first air pump (3) to inflate, and the gas enters the first airbag (1) through the first pressure gauge (2). The first airbag (1) expands to seal the left end of the reservoir culvert (100). When the air pressure detected by the first pressure gauge (2) reaches 0.5-0.8 MPa, turn off the first air pump (3); S2: Move the bottom plate (4) to the left to drive the second airbag (8) to be inserted from the right end of the reservoir culvert (100), and start the second air pump (6) to inflate. The gas enters the second airbag (8) through the second pressure gauge (7). The second airbag (8) expands to seal the right end of the reservoir culvert (100). When the air pressure detected by the second pressure gauge (7) reaches 0.5-0.8 MPa, the second air pump (6) is turned off. S3: After both ends of the reservoir culvert (100) are blocked, the water pressure pump (11) is turned on to extract water from the water tank (14) through the telescopic hose (16) and the L-shaped tube (15) in sequence, and pumped into the reservoir culvert (100) through the water pressure gauge (10). The water pressure gauge (10) detects that the water pressure reaches 0.3 MPa, and the water pressure pump (11) is turned off. At this time, it is observed whether the pressure of the water pressure gauge (10) changes. If there is no change, it means there is no leakage. If the water pressure decreases, it means that the reservoir culvert (100) has a leak. Accurate detection is achieved by holding the pressure; S4: When leakage occurs and the sealing position of the second airbag (8) is changed to be further confirmed, the gas in the second airbag (8) is released by using the second pressure gauge (7), and the driving motor (23) is started in the forward direction. With the cooperation of the two synchronous wheels (21) and the synchronous belt (22), the square rod (20) and the second screw (24) are synchronously driven to rotate. The second screw (24) rotates to drive the slider (25) to move leftward. The slider (25) drives the rectangular tube (17) to move leftward. The rectangular tube (17) drives the first screw (19) to slide leftward on the square rod (20) through the square hole (27). The first screw (19) drives the rectangular rod (18) to move leftward. S5: When the square rod (20) described in S4 rotates, it drives the first screw (19) to rotate through the square hole (27). The rotation of the first screw (19) drives the rectangular rod (18) to slide to the left in the rectangular tube (17). The leftward movement of the rectangular rod (18) achieved by the rotation of the second screw (24) is realized, so that the rectangular rod (18) moves to the left twice. The rectangular rod (18) drives the movable plate (5) to move to the left twice. The movable plate (5) drives the water pressure pump (11) to stretch the telescopic hose (16) to the left. At the same time, the movable plate (5) drives the second air bag (8) to move to the left through the second air pump (6) and the second air pressure gauge (7). The plugging depth position of the second air bag (8) is changed, and the pressure blocking detection work can be carried out again. By analogy, the leakage position can be accurately confirmed step by step by changing the blocking position in sequence. S6: After use, the gas in the first airbag (1) and the second airbag (8) is released using the first pressure gauge (2) and the second pressure gauge (7), the blockage is released, and the airbag is removed from the reservoir culvert (100). The first inflation sealing assembly consisting of the first airbag (1), the first pressure gauge (2) and the first air pump (3) is placed in the storage box (29) to achieve integrated placement and movement.

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