Particle diffusion detection device for dike defect detection

Abstract

The invention discloses a particle diffusion detection device for embankment defect detection in the technical field of embankment structure defect detection, and aims to solve the problem that more defects of an embankment cannot be judged by detecting the flowing state of a water body through a traditional defect detection mode in the prior art. The device comprises a sealing box and a feeler lever installed on the sealing box, a hopper and an air injection pipe are arranged in the sealing box, the air injection pipe is communicated with a discharging pipe opening of the hopper, a collecting rod is arranged at the discharging opening of the hopper in the axis direction of the discharging opening in a sliding mode, a collecting groove is formed in the collecting rod, and a driving mechanism is arranged in the sealing box. The sealing box is further provided with an air connecting pipe and a nozzle which are communicated with the air inlet end and the air outlet end of the air spraying pipe respectively. The underwater spraying device is used for spraying different types of solutions or observation particles underwater, quantitative material taking and spraying can be carried out, and the underwater spraying device has good sealing performance and controllability and can be used for observing and analyzing different to-be-detected substances in various modes.

Description

Technical Field

[0001] The invention relates to a particle diffusion detection device for detecting embankment defects, and belongs to the technical field of embankment structure defect detection. Background Art

[0002] Levees are man-made structures used to prevent flooding and protect coastal areas from flooding. Typically constructed of materials such as soil, concrete, or steel, they are designed with specific heights and thicknesses to cope with varying flooding levels. Levees face risks not only from tilting and settling due to foundation movement, but also from defects such as cracks and fissures caused by aging. Regular monitoring of levees can effectively mitigate potential risks and ensure their safety and reliability.

[0003] Currently, the main methods for embankment inspections include foundation settlement monitoring and water environment monitoring. However, these two methods have limited monitoring capabilities for the structural defects of the embankment itself. Traditional methods do not have the means to effectively detect problems such as embankment cracks, structural defects, leakage and erosion. Therefore, it is impossible to obtain sufficient data for reference in early inspections, which will increase the possibility of risks during the response period.

[0004] According to a solution proposed for the above problem, due to problems such as structural cracks in the levee, water will gush out at the location of the cracks, so local abnormal water flow will be formed at the corresponding location. This application is based on the principle of water flow monitoring and designs a method to spray observable particle powder in the water flow, detect the flow of particles at the spraying position, and judge whether the water flow state at the current position is normal based on the flow state of the particles, so as to judge whether there are structural defects in the levee structure and obtain more characteristics of the levee structure, thereby reducing the stress risk. As for the method of spraying particles underwater, since it is not possible to use the form of direct spraying from the nozzle to avoid nozzle clogging, there is no good response method to allow particles to be normally sprayed and diffused underwater, which is not convenient for video detection. Summary of the Invention

[0005] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a particle diffusion detection device for embankment defect detection, which is used to spray different types of solutions or observation particles underwater, can perform quantitative material extraction and spraying, has high structural stability, good sealing and controllability, and can cope with a variety of methods to observe different substances to be tested.

[0006] To achieve the above object, the present invention is implemented by adopting the following technical solutions: The ion diffusion detection device for levee defect detection provided by the present invention includes a high-speed camera assembly, and also includes a sealed box and a probe rod installed on the sealed box. A hopper and an air injection pipe are arranged inside the sealed box. The air injection pipe is communicated with the discharge pipe orifice of the hopper. A collection rod is slidably arranged along the axis direction of the discharge port at the discharge port position of the hopper. A collection groove is arranged on the collection rod. A driving mechanism is arranged inside the sealed box. The driving mechanism is used to drive the collection rod to move up and down, so as to drive the collection groove to interact between the cavity of the hopper and the inner cavity of the air injection pipe. An air connection pipe and a nozzle are also installed on the sealed box. The air connection pipe and the nozzle are respectively communicated and arranged at the air inlet end and the air outlet end of the air injection pipe. The high-speed camera assembly is installed on the sealed box and the imaging range of the high-speed camera assembly points to the spraying area of the nozzle.

[0007] Specifically, the nozzle includes an opening pipe arranged on the outer surface of the sealed box. The opening pipe is communicated with the air injection pipe. An elastic sealing sheet is arranged inside the opening pipe. The elastic sealing sheet is in a closed state in the natural state to block the opening of the opening pipe.

[0008] Specifically, the cross section of the elastic sealing sheet is in a "U" shape, and the bottom surface of the "U" shaped end face is arranged in contact with the bottom surface of the inner wall of the opening pipe.

[0009] Specifically, the driving mechanism includes a motor and a turntable arranged at the output end of the motor. An eccentric rod is arranged at a non-central position of the turntable. A joint is arranged at one end of the collection rod away from the hopper. A connecting plate is assembled between the joint and the eccentric rod. The two ends of the connecting plate are respectively rotatably matched with the joint and the eccentric rod.

[0010] Specifically, the feed port position of the hopper is located on the upper surface of the sealed box. A hopper cover is arranged on the sealed box to seal the feed port of the hopper. A lifting ring is arranged on the hopper cover.

[0011] Specifically, the number of the high-speed camera assemblies is not less than two.

[0012] Specifically, a group of positioning plates and a group of adjusting plates are arranged on the sealed box. The high-speed camera assembly includes a camera and a sealed shell. The camera is arranged inside the sealed shell and the camera lens part is located outside the sealed shell. A rotating rod and a threaded rod are arranged on the sealed shell. The rotating rod is rotatably matched with the positioning plate. An arc groove with the axis of the rotating rod as the center of the circle is arranged on the adjusting plate. The threaded rod is arranged inside the arc groove. An anti-slip nut is threadedly connected to the threaded rod.

[0013] Specifically, it further includes an irradiation light source installed on the sealed box. The irradiation light source is a lamp or a planar laser.

[0014] Specifically, the air pipe, the wires of the driving mechanism and the signal wires of the high-speed camera assembly are fixed through a probe rod, and the probe rod is made up of a plurality of splicing rods, and a threaded plug and a threaded interface are respectively provided at both ends of the splicing rod.

[0015] Specifically, two adjacent splicing rods are each installed with positioning heads that match each other in position, and a positioning rod is inserted and connected to every two matching positioning heads.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention cross-connects the jet pipe and the discharge pipe of the hopper in a sealed box, uses the collecting groove of the collecting rod to transport the observed objects in the hopper to the airway of the jet pipe, and uses high-pressure gas to send the observed objects to the nozzle for spraying, thereby realizing quantitative material extraction and combined gas mixed spraying. The collecting rod intermittently blocks the jet pipe during operation, effectively reducing the loss of gas volume in the jet pipe, and has good spraying stability and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 1 is a schematic diagram of the overall structure of a particle diffusion detection device provided by an embodiment of the present invention; Figure 2 This is another position structure diagram of the particle diffusion detection device provided by an embodiment of the present invention; Figure 3 is a side view of a particle diffusion detection device provided by an embodiment of the present invention; Figure 4 This invention Figure 3 A cross-sectional view of the particle diffusion detection device provided in the embodiment in the direction of AA; Figure 5 This invention Figure 4 An enlarged view of the structure at position B of the particle diffusion detection device provided in the embodiment; Figure 6 This invention Figure 4 An enlarged view of the structure at position C of the particle diffusion detection device provided in the embodiment; Figure 7 is a partial front view of a particle diffusion detection device provided by an embodiment of the present invention; Figure 8 This invention Figure 7 A cross-sectional view in the DD direction of a particle diffusion detection device provided in an embodiment; Figure 9 This is a schematic diagram of the overall structure of a spray structure provided by an embodiment of the present invention; Figure 10 This invention Figure 9 A schematic cross-sectional view of the injection structure provided in the embodiment; Reference numerals: 1, sealed box; 2, hopper; 3, collection rod; 4, collection groove; 5, air injection pipe; 6, drive mechanism; 601, motor; 602, turntable; 603, connecting plate; 7, connecting air pipe; 8, probe rod; 801, splicing rod; 802, positioning head; 803, positioning insertion rod; 9, high-speed camera assembly; 901, camera; 902, sealed housing; 903, signal wire; 10, nozzle; 1001, open pipe; 1002, elastic sealing sheet; 11, material cover; 12, lifting ring; 13, positioning plate; 14, adjusting plate; 15, rotating rod; 16, threaded rod; 17, anti-slip nut; 18, joint; 19, sleeve; 20, elastic spray pipe. Detailed implementation manners

[0018] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention, and cannot be used to limit the protection scope of the present invention.

[0019] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0020] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0021] The particle diffusion detection device for detecting dike defects provided by the embodiments of the present invention is used to eject different types of solutions or observation particles underwater. It has high structural stability, good sealing performance and controllability, and can cope with various methods to observe different substances to be detected. In order to achieve the general function of particle ejection, the device is provided with a sealed box 1 and a probe rod 8 installed on the sealed box 1. The sealed box 1 is used to seal the associated component structure during underwater operation and to seal the stored powdery materials. The probe rod 8 is used to extend the sealed box 1 to the corresponding depth and angle positions in the water body, so as to extend the sealed box 1 to different positions in the water body to eject powder particles. The corresponding cable structure can also be pre-fixed through the probe rod 8 to prevent the cable from floating and winding under the action of turbulent flow underwater. In order to achieve the ejection of powder, as Figures 4 - 8 shown, a hopper 2 and an air injection pipe 5 are provided inside the sealed box 1. The hopper 2 is used to store powder materials. The air injection pipe 5 is a rigid pipe, including an air inlet and an air outlet provided on the sealed box 1. The air injection pipe 5 is cross-connected and communicated with the discharge pipe orifice of the hopper 2. Adopt as Figure 4The shown crossing method is adopted, and a collecting rod 3 is slidably arranged along the axis direction of the discharge port at the position of the discharge port of the hopper 2. The diameter of the collecting rod 3 matches the inner diameter of the discharge pipe orifice of the hopper 2 to prevent the collecting rod 3 from failing to fully block the discharge port of the hopper 2 and causing direct leakage of the powder material. In order to realize the quantitative transportation of the powder into the air injection pipe 5, a collecting groove 4 is arranged on the collecting rod 3. The collecting groove 4 is preferably a communicating groove in the shape of a waist-shaped hole. The lifting of the collecting groove 4 is used to drive the powder in the hopper 2 into the collecting groove 4, and then move down to the position of the air injection pipe 5 for powder supply and ejection. At this time, the air injection pipe 5 is filled with high-pressure gas. After the collecting groove 4 falls into the air injection pipe 5, the pipeline of the air injection pipe 5 is opened, and at the same time, the powder brought by the collecting groove 4 enters the pipeline interior, so that the powder is ejected following the high-pressure gas, realizing the quantitative supply of the powder to the air injection pipe 5. In order to realize automatic control, a driving mechanism 6 is arranged inside the sealing box 1. It is set that the driving mechanism 6 is used to drive the collecting rod 3 to reciprocate up and down, so as to drive the collecting groove 4 to interact between the cavity of the hopper 2 and the inner cavity of the air injection pipe 5. It should be noted here that the length of the collecting groove 4 should not be too long to avoid simultaneously communicating with the inner bin of the hopper 2 and the air injection pipe 5, preventing the high-pressure gas from entering the interior of the hopper 2 to empty the powder from the hopper 2 at one time. In order to realize the normal ejection of observable substances such as powder, an air connection pipe 7 and a nozzle 10 are also installed on the sealing box 1. The air connection pipe 7 and the nozzle 10 are respectively connected and arranged at the air inlet end and the air outlet end of the air injection pipe 5. The air connection pipe 7 is used to connect and supply high-pressure gas from an air pump above the water surface, and the nozzle 10 is used to quantitatively eject the material. The nozzle 10 can be composed of a simple control valve and a pipe orifice, or the control valve can be set to be linked with the collecting rod 3 to eject when ejection is required, avoiding the backflow of the water body in the underwater environment and thus polluting the feeding pipeline. At this time, a high-speed camera assembly 9 is installed on the sealing box 1, and the imaging range of the high-speed camera assembly 9 is configured to point to the ejection area of the nozzle 10. The position of the underwater particles is detected through high-speed imaging, so as to judge whether there are defects in the dike and the possible types of defects according to the flow direction of the particles.

[0022] One of the cooperation modes between the particles and the high-speed camera assembly 9: The particles adopt different-color particles (such as titanium dioxide, etc.) or dye solutions, and the high-speed camera assembly 9 continuously shoots under the state of supplementary lighting, and the flow direction of the water body is obtained through the imaging result of the stained area; The second cooperation mode between the particles and the high-speed camera assembly 9: The particles adopt particles that can react with water and release heat, such as lithium powder, etc. The high-speed camera assembly 9 uses an infrared thermal imager to analyze the heat of a specified position in the water area, and judges the flow direction of the particles by monitoring the change of the heat area; The third cooperation mode between the particles and the high-speed camera assembly 9: The particles are particles that emit light when reacting with water (such as a sodium powder solution preserved by grease, etc.). The high-speed camera assembly 9 continuously captures the distribution of underwater light pollution, thereby determining whether the flow direction of the water body is abnormal; The fourth cooperation mode between the particles and the high-speed camera assembly 9: The particles are reflective particles. The reflective condition of the particles is obtained by irradiating with an infrared laser front. The high-speed camera assembly 9 determines whether the water flow in the water area is normal by detecting the position change state of the short-time reflection of the particles.

[0023] The above configuration modes can be selected according to the actual situation of the water body, and it is not required that each cooperation mode be applied in each different water body environment. When it is difficult to implement an individual mode, the cooperation mode required should be flexibly judged according to the on-site requirements, and the type of the high-speed camera assembly 9 should be changed accordingly.

[0024] The device determines the flow direction of the water body by monitoring the flow change of the powder. If the monitored powder shows a locally uneven outgoing flow, it is very likely caused by a dike crack or a breach leakage. The observer needs to make a further analysis and judgment based on the actual continuously captured images. Since the judgment method is not the content to be protected by the application, no further description is made here. When performing the detection operation with the above structure, the influence of different water areas and the dike structure itself should be fully considered to determine the most suitable method for detecting the powder particles, and the detection should be avoided in windy and wavey weather to prevent the abnormal disturbance of the water flow from affecting the actual detection and judgment results.

[0025] For the particle diffusion detection device for dike defect detection provided by the embodiment of the present invention, in order to enable the nozzle 10 to automatically eject the powder without active opening and closing and to be able to close normally in a state where non-high-pressure gas is not connected, here the nozzle 10 is provided with an opening pipe 1001 arranged on the outer surface of the sealed box 1. Specifically, here the opening pipe 1001 is connected to the air jet pipe 5, and as Figure 6 shown, an elastic sealing sheet 1002 is arranged inside the opening pipe 1001. It is only necessary to set the elastic sealing sheet 1002 to be in a closed state in the natural state to block the opening of the opening pipe 1001. The elastic sealing sheet 1002 extends from the upper end surface of the opening pipe 1001 to the lower end surface of the opening pipe 1001, that is, the elastic sealing sheet 1002 realizes the closing action of the opening pipe 1001 through elastic extrusion. When high-pressure gas passes through, the elastic sealing sheet 1002 automatically opens, so that the substance to be measured can be normally ejected. As a preferred implementation mode, here the cross-section of the elastic sealing sheet 1002 is in a "U" shape, as Figure 6As shown, the bottom surface of the "U"-shaped end surface is arranged to fit the bottom surface of the inner wall of the open tube 1001, and the bottom is squeezed by utilizing the deformation ability of the material itself to achieve the closure of the open tube 1001 in the normal non-ventilated state. As another spray end structure design of the powder spraying structure, it can be designed as follows Figure 9 and Figure 10 As shown, it includes a sleeve 19 and an elastic nozzle 20 arranged inside the sleeve 19. The elastic nozzle is a rubber tube with elastic deformation. The elastic nozzle 20 is designed as a convergent tube as a whole and forms a closed mouth at the convergent end, that is, the end of the rubber tube presents a closed design with an arc transition. In the natural state, the wall thickness is preferably not less than 5 mm, and at the closed end of the elastic nozzle 20, there are at least two cutting slits designed to pass through the center of the circle so that the closed mouth can open when subjected to internal gas pressure (that is, the front end of the rubber tube is in the shape of a petal of a flower bud). The sleeve 19 is used to constrain the closed mouth of the elastic nozzle 20 to be in a mutually compressed and sealed state under normal conditions, so that after being subjected to the high pressure of the air injection pipe 5, it can be quickly compressed and opened to enable the gas to blow the powder out from the opened closed mouth position. The above method is as follows Figure 10 As shown, when high-pressure gas is provided from left to right, the opening at the front end will naturally open to release gas, and after the air is cut off from the jet pipe, the flowered end of the elastic rubber tube will naturally close due to elastic action. Since the air pressure inside the pipeline is significantly lower than the external water pressure, in addition to free elastic reset, the water pressure will also drive these elastic petals to stick to each other, thereby achieving the closure of the pipeline. The sleeve 19 is used to prevent unstable spraying or leakage caused by excessive opening angle of the petals, and is used to constrain the overall shape of the elastic nozzle 20.

[0026] The particle diffusion detection device for embankment defect detection provided by the embodiment of the present invention specifically provides a driving method for realizing intermittent ejection of automatically driven powder. Specifically, the driving mechanism 6 is provided here including a motor 601 and a turntable 602 provided at the output end of the motor 601. Figure 4 、 Figure 5 as well as Figure 8 As shown, an eccentric rod is provided at a non-center position of the turntable 602, a joint 18 is provided at the end of the collecting rod 3 away from the hopper 2, and a connecting plate 603 is assembled between the joint 18 and the eccentric rod. The connecting plate 603 is used to connect the two for transmission, and the two ends of the connecting plate 603 are respectively rotated with the joint 18 and the eccentric rod. Figure 7As shown, when the motor 601 is in action, the turntable 602 rotates, driving one end of the connecting plate 603 to move in a circular motion, while the other end of the connecting plate 603 is upper-limited in the vertical direction by the collecting rod 3, that is, the other end can only rise and fall following the position change of the turntable 602, so that during the continuous rotation of the motor 601, the connecting plate 603 can drive the collecting rod 3 to perform reciprocating lifting and lowering motion, thereby automatically realizing the intermittent supply of powder in the hopper 2 to the injection pipe 5, thereby facilitating automated powder spraying and detection.

[0027] The particle diffusion detection device for embankment defect detection provided by an embodiment of the present invention has a feed port of the hopper 2 located on the upper surface of the sealing box 1 in order to facilitate the addition of powder or other materials to be tested into the hopper 2, and a material cover 11 is provided on the sealing box 1 to seal the feed port of the hopper 2. In addition to fixing the material cover 11 with bolts, a lifting ring 12 can be provided on the material cover 11 to facilitate the lifting and removal operation of the material cover 11.

[0028] The particle diffusion detection device for embankment defect detection provided by the embodiment of the present invention has at least two high-speed camera assemblies 9 provided here to facilitate obtaining imaging results at different positions in different imaging analysis modes. Through multi-directional detection, not only can the imaging range be improved, but it is also beneficial to analyze different angles and obtain more accurate results. Figure 1 As shown, the upper and lower cameras can be set to judge the multi-angle view of the particle flow. As another preferred embodiment, considering that the device should be configured on the hull for detection, although the hull is relatively still on the water surface for measurement in an ideal state, considering the efficiency problem, the hull is generally in an unanchored and positioned state. At this time, the hull is required to move forward at a certain relative speed. In order to prevent the actual ship speed from affecting the camera range and avoiding the camera range being far away from the ejection area after the particles are ejected, the high-speed camera assembly 9 can also be set on both sides of the nozzle 10. After the powder particles are ejected forward, the time for the particles to diffuse evenly can allow the high-speed camera assembly 9 to move to the corresponding optimal shooting position and retain the effective shooting time period as much as possible to obtain a more accurate shooting effect.

[0029] In order to facilitate the adjustment of the camera angle position of the high-speed camera assembly 9, a particle diffusion detection device for embankment defect detection provided by the embodiment of the present invention can be provided with a set of positioning plates 13 and a set of adjustment plates 14 on the sealed box 1, such as Figure 2As shown in the figure, specifically, the high-speed camera assembly 9 is provided, which includes a camera 901 and a sealed housing 902. The camera 901 is arranged inside the sealed housing 902, and the camera part of the camera 901 is located outside the sealed housing 902, so as to protect the circuit part of the camera 901 normally by the sealed housing 902 and let the imaging part flow out outside the sealed housing 902 for facilitating the collection of shooting information. Since the specific sealing means is not unique, it will not be elaborated here. In order to enable the camera 901 to adjust the angular position of the camera 901 according to the actual situation of the water area, a rotating rod 15 and a threaded rod 16 are provided on the sealed housing 902. The rotating rod 15 is rotationally matched with the positioning plate 13, and an arc groove centered on the axis of the rotating rod 15 is provided on the adjusting plate 14. The threaded rod 16 is arranged inside the arc groove, and an anti-slip nut 17 is threadedly connected to the threaded rod 16. When it is necessary to adjust the angular position of the high-speed camera assembly 9, loosen the anti-slip nut 17, manually control the sealed housing 902 to rotate to a suitable position, and then tighten the anti-slip nut 17 again to make the anti-slip nut 17 hold tightly on the adjusting plate 14.

[0030] For the particle diffusion detection device for detecting dike defects provided by the embodiment of the present invention, in order to be able to adapt to different particle types so that the high-speed camera assembly 9 can normally monitor the position of the particles to be detected, the device is further provided with an irradiation light source installed on the sealed box 1. The irradiation light source is set as a light or a laser array surface. By capturing the color change or the reflected light change of the particles, the concentration trend of the particles can be judged, and then the flow state of the water body can be further judged.

[0031] For the particle diffusion detection device for detecting dike defects provided by the embodiment of the present invention, since the control circuit needs to be routed to a position above the water surface (such as on the hull), for the convenience of wiring and to avoid the flexible pipelines from being worn or wound by each other due to fluid disturbance, the gas connection pipe 7, the wires of the driving mechanism 6, and the signal line 903 of the high-speed camera assembly 9 are fixed through the probe rod 8, and can be gradually tied up by a plurality of cable ties. In order to realize detection and measurement at different depths, the probe rod 8 can be set to be composed of a plurality of spliced rods 801 to meet the requirements of different depths. The two ends of the spliced rod 801 are respectively provided with a threaded plug and a threaded interface for matching adjacent spliced rods 801 to extend or shorten.

[0032] For the particle diffusion detection device for detecting dike defects provided by the embodiment of the present invention, in order to ensure the normal direction and position of the sealed box 1 underwater, it is also necessary to avoid the relative rotation of adjacent two spliced rods 801 through the thread. Positioning heads 802 with mutually matching positions are installed at the positions where adjacent two spliced rods 801 are close to each other, such as Figure 2As shown, a positioning insertion rod 803 is inserted and connected to every two matching positioning heads 802. After the splicing rods 801 are relatively fixed by threads, the positioning insertion rod 803 performs secondary positioning to prevent the adjacent splicing rods 801 from rotating relative to each other, thereby causing uncontrollable changes in the angular position of the sealed box 1.

[0033] The present invention realizes the judgment of abnormal water flow direction through the above-mentioned mechanism, so as to provide a further reference for whether there are defects such as cracks in the dike structure. The specific operation steps are as follows: S1: Assemble the probe rod 8 and the sealed box 1, and configure the sealed box 1 with detection function and powder spraying function; S2: Lower the probe rod 8 to drive the sealed box 1 to extend into the corresponding area inside the water body; S3: Start or maintain the driving mechanism 6 to spray powder, and enable the high-speed camera assembly 9 to continuously take pictures; S4: Drive the sealed box 1 to move horizontally, and continuously monitor and photograph the sprayed powder; S5: Repeat S2 - S4 until the entire area of the dike structure is completed with powder spraying and photographing.

[0034] In the above method, the probe rod 8 is preferably arranged on the hull. By uniformly controlling the speed of the hull, efficient powder spraying detection work can be achieved. By horizontally moving the sealed box 1 at different horizontal layers respectively, the reciprocating lifting action process of the probe rod 8 can be effectively reduced, which is beneficial to simplifying the actual detection operation.

[0035] In the above steps, since the photographed pictures are not instant analysis pictures, attention should be paid to recording the depth of the position of the sealed box 1 during shooting. The depth position can be determined by the number of splicing rods 801, or a water pressure monitoring sensor can be set on the sealed box 1 to calculate through formulas. Since the specific implementation methods are not unique, no more introduction will be made. When necessary, a GPS needs to be equipped on the hull and the real-time position of the hull needs to be recorded. During shooting, by retaining the time stamp, the subsequent combination analysis of the hull position (i.e., the position of the dike) and the depth position of the sealed box 1 can be carried out, so as to provide a more accurate position reference for the defect assessment of the dike and provide a more accurate plane position defect composed of the X-axis and the Z-axis.

[0036] The above is only the preferred implementation manner of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and deformations can still be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. A particle diffusion detection device for detecting embankment defects, including a high-speed camera assembly, characterized in that, It also includes a sealed box and a probe rod installed on the sealed box. Inside the sealed box, there is a hopper and an air injection pipe. The air injection pipe is connected to the outlet pipe opening of the hopper. At the outlet of the hopper, a collection rod is slidably arranged along the axis of the outlet. There is a collection groove on the collection rod. Inside the sealed box, there is a driving mechanism, which is used to drive the collection rod to move up and down, so as to drive the collection groove to interact between the cavity of the hopper and the inner cavity of the air injection pipe. An air connection pipe and a nozzle are also installed on the sealed box. The air connection pipe and the nozzle are respectively connected and arranged at the inlet end and the outlet end of the air injection pipe. The high-speed camera assembly is installed on the sealed box, and the imaging range of the high-speed camera assembly points to the spraying area of the nozzle.

2. The particle diffusion detection device for levee defect detection according to claim 1, characterized in that, The nozzle includes an open pipe arranged on the outer surface of the sealed box. The open pipe is connected to the air injection pipe. An elastic sealing sheet is arranged inside the open pipe. The elastic sealing sheet is in a closed state in its natural state to block the opening of the open pipe.

3. The particle diffusion detection device for levee defect detection according to claim 2, characterized in that, The cross-section of the elastic sealing sheet is in a "U" shape, and the bottom surface of the "U" shaped end face is arranged in contact with the bottom surface of the inner wall of the open pipe.

4. The particle diffusion detection device for levee defect detection according to claim 1, characterized in that, The driving mechanism includes a motor and a turntable arranged at the output end of the motor. An eccentric rod is arranged at a non-central position of the turntable. A joint is arranged at one end of the collection rod away from the hopper. A connecting plate is assembled between the joint and the eccentric rod. The two ends of the connecting plate are respectively rotatably matched with the joint and the eccentric rod.

5. The particle diffusion detection device for levee defect detection according to claim 1, characterized in that, The inlet of the hopper is located on the upper surface of the sealed box. A hopper cover is arranged on the sealed box to seal the inlet of the hopper. A lifting ring is arranged on the hopper cover.

6. The particle diffusion detection device for levee defect detection according to claim 1, characterized in that, There are no less than two high-speed camera assemblies.

7. The particle diffusion detection device for levee defect detection according to claim 1, wherein A set of positioning plates and a set of adjusting plates are arranged on the sealed box. The high-speed camera assembly includes a camera and a sealed shell. The camera is arranged inside the sealed shell, and the camera lens part is located outside the sealed shell. A rotating rod and a threaded rod are arranged on the sealed shell. The rotating rod is rotatably matched with the positioning plate. An arc groove centered on the axis of the rotating rod is arranged on the adjusting plate. The threaded rod is arranged inside the arc groove, and an anti-slip nut is threadedly connected to the threaded rod.

8. The particle diffusion detection device for levee defect detection according to claim 1, characterized in that, It also includes an irradiation light source installed on the sealed box. The irradiation light source is a lamp or a plane laser.

9. The particle diffusion detection device for levee defect detection according to claim 1, characterized in that The air connection pipe, the wires of the driving mechanism, and the signal wires of the high-speed camera assembly are fixed by the probe rod. The probe rod is composed of multiple spliced rods. Threaded plugs and threaded interfaces are respectively arranged at both ends of the spliced rod.

10. The particle diffusion detection device for levee defect detection according to claim 9, characterized in that, Positioning heads with matching positions are installed at the positions where adjacent two spliced rods are close to each other. A positioning plug rod is inserted and connected between every two matching positioning heads.

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