Rainwater storage pond hydraulic self-silt-flushing device based on image recognition technology

Abstract

The utility model discloses a rainwater storage pond hydraulic self-silt-flushing device based on an image recognition technology, a rainwater storage pond gallery comprises a curved surface side wall arranged along a wide side and n overflowing channels which are connected with the curved surface side wall and are in a step shape along the length direction, and channel separation piers distributed along the length direction are arranged between adjacent overflowing channels; the water storage chamber is mounted on the curved side wall and is positioned above the overflowing channel; the water inlet adjusting tank is communicated with the water storage tank; the lifting overflow weir is mounted on the side wall, close to the curved side wall, of the water storage chamber and corresponds to the overflowing channel in position; the effluent silt collecting tank is connected with the lower section of the overflowing channel; the openMV camera is mounted on a corridor of the rainwater storage tank; the controller is in signal connection with the openMV camera and the lifting type overflow weir, the device controls the lifting of the weir plate of the corresponding lifting type overflow weir by detecting and identifying the deposition condition of the deposits, and the utilization rate of water in the water storage chamber is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of silting removal in a regulating reservoir, in particular to a hydraulic self-flushing silt removal device for a rainwater regulating reservoir based on an image recognition technology. Background Art

[0002] For cities with severe water shortages and waterlogging, rainwater storage tanks are a comprehensive ecological water management solution that plays a major role in urban development. If the storage tanks are not cleaned in time, the increasing amount of pollutants at the bottom of the tanks will affect the normal working efficiency of the storage tanks and endanger the environment and human health. Therefore, it is very important to flush the storage tanks regularly.

[0003] At present, the common methods of flushing storage tanks are as follows:

[0004] The first flushing method is water jet flushing, which uses aerated high-pressure water to flush and clean the sediment at the bottom of the pool. It can be flushed automatically, and the aeration process during flushing can reduce odor. It is suitable for all pool types. However, it is necessary to build a flushing water storage tank, which has high operating costs, and the equipment is easily contaminated and worn because it is located at the bottom of the pool.

[0005] The second flushing method is door-type flushing. The flushing distance of a single flushing wave is long, and it can be controlled manually or electrically. It has flexible adjustment, low operating cost and high efficiency. However, the investment in imported equipment is relatively high, and the moving parts are located underwater, which is easy to entangle with garbage and inconvenient to maintain.

[0006] In addition, among the disclosed patents for rainwater storage tanks, some use a combined gate-type and vacuum flushing system, which combines the characteristics of the two cleaning methods, but requires the establishment of a water storage tank and a sump, and the operating cost is relatively high; some design a vacuum flushing system for the storage tank, which uses the siphon effect to control the water volume in the water storage chamber, but requires the full construction of the vacuum flushing system, and the operating cost is also high. Utility Model Content

[0007] The technical problem to be solved by the utility model is to address the deficiencies of the above-mentioned prior art and to provide a rainwater storage tank hydraulic self-flushing and silting device based on image recognition technology. The rainwater storage tank hydraulic self-flushing and silting device based on image recognition technology solves the limitations of the existing flushing and silting technology, which makes it difficult to monitor the siltation condition at the bottom of the rainwater storage tank corridor in real time and to accurately and efficiently flush the siltation condition of the flow channel in different rainwater storage tank corridors.

[0008] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0009] A rainwater storage tank hydraulic self-flushing and silting device based on image recognition technology comprises a rainwater storage tank corridor, a water storage chamber, an inlet regulating tank, a lifting overflow weir, an outlet silt collecting tank, a camera and a controller; the rainwater storage tank corridor is rectangular in cross section and has a curved side wall along the width direction; the bottom of the rainwater storage tank corridor is equidistantly arranged with n The flow channels are all along the length direction; among them, n ≥2; the water storage chamber is installed in the corridor of the storage tank adjacent to the curved side wall along the width direction and is located n The water storage room is evenly spaced. n - 1 partition to divide the water storage room into n A water storage chamber; n Water storage chamber n The positions of the flow channels along the width direction correspond to each other; the water inlet regulating tank is connected to the external rainwater pipe network and is connected to the n The water storage chambers are interconnected; the outlet silt collection tank is set in the downstream section of the rainwater storage tank corridor, which can collect rainwater after siltation; n A lifting overflow weir is provided on each side of the curved side wall of each water storage chamber; each lifting overflow weir comprises a weir plate, a lifting drive device and a displacement sensor; the weir plate can be lifted and lowered in height under the action of the lifting drive device; the displacement sensor can detect the height lifting amount of the weir plate; each flow channel is provided with a plurality of cameras equidistantly arranged along the length direction, and each camera can take a picture of the bottom surface of the flow channel; the bottom surface color of each flow channel is different from the sludge color; and the controller is respectively connected to the lifting drive device, the displacement sensor and all the cameras.

[0010] Preferably, the camera is an openMV camera.

[0011] Preferably, the controller is an Infineon TC264 single chip microcomputer.

[0012] Preferably, two adjacent flow channels are separated by channel partitions arranged along the length direction; cameras are arranged on the top of the corresponding channel partitions and are equidistantly arranged at intervals of 5m along the length direction.

[0013] Preferably, the lifting drive device is an oil cylinder, and the bottom of the oil cylinder piston rod is connected to the bottom of the weir plate through a transverse connecting rod.

[0014] Preferably, each lifting overflow weir further includes a support frame, in which a guide groove is arranged; and pulleys are arranged on both side end surfaces of the weir plate and are in rolling contact with the side walls of the guide groove.

[0015] Preferably, each lifting overflow weir also includes a rubber seal; the rubber seal is arranged in the guide groove and is used for sealing the oil cylinder.

[0016] Preferably, the top surface of each weir plate is a concave arc surface.

[0017] Preferably, the bottom of the water storage chamber is installed on the curved side wall through a plurality of foundation columns, and the height of the foundation columns is not less than the lifting height of the weir plate.

[0018] Preferably, n =6. The bottom surface of the rainwater storage tank corridor is provided with a slope that is high in the front and low in the back.

[0019] The utility model has the following beneficial effects:

[0020] 1. This application uses a camera to take pictures of each flow channel in the rainwater storage tank corridor. Based on the pictures taken, it can be determined whether there is silt in each flow channel and the area ratio.

[0021] 2. During the discharge period of the rainwater storage tank, the present application can control the weir plate corresponding to the flow channel with silt to rise and fall according to the silt situation in the flow channel, so as to self-wash the silt in the flow channel without the need for additional water supply. In addition, the setting of the displacement sensor can adjust the lifting height of the weir plate according to the area ratio of the silt, and then adjust the size of the flushing outlet and the flushing water volume, saving water while ensuring the flushing effect.

[0022] 3. This application achieves accurate flushing and silting of each flow channel in the corridor of the rainwater storage tank, avoiding the waste of water flow gravitational potential energy and the wear and tear of other pollution-free flow channels caused by unnecessary flushing. Due to the large height difference of the storage tank and the large gravitational potential energy of the water flow, the process of water flow in the water storage room falling to the corridor of the rainwater storage tank for flushing and silting will produce a certain impact force, which can effectively clean the silt in the corridor of the rainwater storage tank, and the power of this process comes from the gravitational potential energy of the water flow, achieving energy saving and carbon reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an overall top view of a hydraulic self-flushing and silting device for a rainwater storage tank based on image recognition technology of the utility model.

[0024] Figure 2 yes Figure 1 The AA section diagram corresponds to the initial stage working condition of the weir plate.

[0025] Figure 3 yes Figure 1 The AA section diagram corresponds to the working condition of the weir plate descending stage.

[0026] Figure 4 yes Figure 1 BB cross-section diagram.

[0027] Figure 5 This is a half-section view of the front view of the lifting overflow weir.

[0028] Figure 6 It is a three-dimensional structural diagram of a lifting overflow weir.

[0029] These include: 1. Rainwater storage tank corridor; 11. Curved side wall; 12. Flow channel; 13. Channel partition pier;

[0030] 2. Water storage room; 3. Water inlet regulating tank;

[0031] 4. Lifting overflow weir;

[0032] 41. Support frame; 42. Weir plate; 43. Rubber seal; 44. Guide groove; 45. Oil cylinder; 46. Displacement sensor;

[0033] 5. Outlet silt collection tank; 6. openMV camera; 7. Partition. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0035] like Figures 1 to 6 As shown, a rainwater storage tank hydraulic self-flushing and silting device based on image recognition technology includes a rainwater storage tank corridor 1, a water storage chamber 2, an inlet regulating tank 3, a lifting overflow weir 4, an outlet silt collecting tank 5, a camera 6 and a controller.

[0036] The rainwater storage tank corridor 1 includes a curved side wall 11 arranged along the wide side and a longitudinal direction connected to the curved side wall 11. n There are flow passages 12, and channel partitions 13 arranged along the length direction are provided between adjacent flow passages 12. n is a positive integer greater than or equal to 2, preferably n Equal to 6; Rainwater storage tank corridor 1 is the main residual place of silt.

[0037] In this embodiment, the bottom surface of the rainwater storage tank corridor is provided with a slope which is higher in the front and lower in the back.

[0038] The water storage chamber 2 is preferably installed on the curved side wall 11 through a plurality of foundation columns, located above the flow passage 12, for storing the collected rainwater. The height of the foundation column is not less than the lifting height of the subsequent weir plate.

[0039] Isometric layout inside water storage room n - 1 partition to divide the water storage room into n A water storage chamber; n Water storage chamber n The positions of the flow channels along the width direction correspond one to one.

[0040] In this embodiment, taking the top surface of the foundation column as the reference, assuming that the water storage height of each water storage chamber is H, the height of the weir plate is 1.3H, the elevation difference between the bottom surface of the flow channel and the top surface of the foundation column is 3H, and the height of the foundation column is 1.2H. Therefore, the height difference of the regulating reservoir is large, the gravitational potential energy of the water flow is large, and the process of the water flow in the water storage chamber falling to the corridor of the rainwater regulating reservoir for silting will generate a certain impact force, which can effectively clean the silt in the corridor of the rainwater regulating reservoir, and the power of this process comes from the gravitational potential energy of the water flow, achieving energy saving and carbon reduction.

[0041] Inlet regulating tank 3 and water storage room n The water storage chambers are connected, and rainwater flows into the water storage chamber through the water inlet regulating tank 3. n In a water storage chamber.

[0042] exist n A lifting overflow weir is respectively arranged on one side of each water storage chamber adjacent to the curved side wall.

[0043] Each lifting overflow weir includes a support frame 41 , a weir plate 42 , a rubber seal 43 , a lifting drive device and a displacement sensor 46 .

[0044] The support frame is provided with a guide groove 44, the weir plate is located in the guide groove, and both side end surfaces of the weir plate are preferably provided with pulleys that are in rolling contact with the side walls of the guide groove.

[0045] The top surface of each of the weir plates is preferably a concave arc surface, which can guide and avoid hydraulic loss. The weir plate can be raised and lowered in height under the action of the lifting drive device.

[0046] The lifting drive device is preferably an oil cylinder, which is preferably built into the support frame, and the bottom of the oil cylinder piston rod is connected to the bottom of the weir plate through a transverse connecting rod.

[0047] The rubber seal is arranged in the guide groove and is used for sealing the oil cylinder.

[0048] The displacement sensor is preferably installed on the piston rod of the oil cylinder and can detect the height rise and fall of the weir plate.

[0049] The outlet silt collecting tank 5 is connected to the lower section of the flow channel 12 and is used to receive the rainwater and sewage mixture washed from the rainwater storage tank corridor 1.

[0050] Each flow channel is provided with a plurality of cameras 6 equidistantly arranged along the length direction, and each camera can take a picture of the bottom surface of the flow channel; the color of the bottom surface of each flow channel is different from the color of the sludge.

[0051] Two adjacent flow channels are separated by channel partitions 13 arranged along the length direction.

[0052] The above-mentioned camera is preferably an openMV camera, and a penMV camera is preferably installed every 5m along the length direction of the flow channel 12. Further, the openMV camera is preferably installed at the top of the channel partition 13, 1m away from the top of the channel partition 13, and each flow channel 12 is installed with four openMV cameras.

[0053] The controller is connected to the lifting drive device, the displacement sensor and all the cameras respectively. The controller is a mature existing technology, purchased on the market, and the preferred model is Infineon TC264 single chip microcomputer and the like.

[0054] This application is mainly aimed at self-flushing during the drainage stage of the regulating reservoir, and the incoming water can be used for flushing during the water intake stage.

[0055] The method for using the hydraulic self-flushing and silting device of a rainwater storage tank based on image recognition technology comprises the following steps:

[0056] The first step is image recognition: the color tracking function of the openMV camera is used to mark the silt color blocks. According to the image recognition results, the ratio of the remaining silt color blocks in each flow channel 12 in the rainwater storage tank corridor 1 to the total area of ​​the corresponding flow channel 12 is displayed, and different working conditions are operated. The controller determines the silt and the area ratio, which is a mature existing technology and can also be judged manually.

[0057] The second step is to lower the weir plate: the controller opens the corresponding weir plate according to the sediment in the corresponding channel, and then determines the lowering height of the weir plate 42 according to the area ratio.

[0058] A. If the detection identifies that the sediment occupies less than 2% of the total area of ​​the flow channel 12, the controller controls the weir plate 42 of the lifting overflow weir 4 to be in the initial state, such as Figure 2 As shown, the bottom end of the weir plate 42 is preferably located 0.2H below the foundation column, and the upper end of the weir plate 42 is located 1.1H above the foundation column, and all water is stored in the water storage chamber 2.

[0059] B. If the detection identifies that the silt occupies 2% to 10% of the total area of ​​the flow channel 12, the controller sends an electrical signal to the oil cylinder, and the oil cylinder controls the weir plate 42 to slide down quickly along the guide groove, and the upper end height of the weir plate 42 is reduced to a height of 0.6H. The working water body above the 0.6H water level quickly falls onto the curved side wall 11, forming a convolution flow to clean up the silt in the flow channel 12.

[0060] C. If it is detected that the silt occupies more than 10% of the total area of ​​the flow channel 12, the controller sends an electrical signal to the oil cylinder, and the oil cylinder controls the weir plate 42 to slide down quickly along the guide groove, and the upper end height of the weir plate 42 is reduced to a height of 0.1H. The working water body above the 0.1H water level quickly falls onto the curved side wall 11, forming a convolution flow to clean up the silt in the flow channel 12.

[0061] Step 3: Reset the weir plate: When the cleaning is completed, the controller controls the weir plate 42 to slowly rise to the initial height H along the guide groove 48, and the water storage chamber 2 continues to store incoming water.

[0062] If the openMV camera detects that the silt has not been cleared, it will repeat steps 2 to 3 to determine the degree of siltation again and control the weir plate elevation to the specified working elevation.

[0063] The utility model proposes a device which can fully utilize the upper layer flow to accurately and effectively flush the silt at the bottom of the regulating reservoir, and is suitable for promotion and application in the design and reconstruction of regulating reservoir projects.

[0064] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical scheme of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. A rainwater storage tank hydraulic self-flushing and silting device based on image recognition technology, characterized in that: It includes rainwater storage tank corridor, water storage chamber, water inlet regulating tank, lifting overflow weir, water outlet silt collecting tank, camera and controller; The cross section of the rainwater storage tank corridor is rectangular, with curved side walls along the width direction; the bottom of the rainwater storage tank corridor is evenly spaced. n The flow channels are all along the length direction; among them, n ≥2; The water storage chamber is installed in the corridor of the storage tank adjacent to the curved side wall along the width direction and is located n Above a flow passage; Isometric layout inside water storage room n - 1 partition to divide the water storage room into n A water storage chamber; n Water storage chamber n The positions of the flow channels along the width direction correspond one to one; The water inlet regulating tank is connected to the external rainwater pipe network and n The water storage chambers are connected; The outflow silt collection tank is set in the downstream section of the rainwater storage tank corridor to collect rainwater after siltation; exist n A lifting overflow weir is provided on each side of each water storage chamber adjacent to the curved side wall; Each lifting overflow weir includes a weir plate, a lifting drive device and a displacement sensor; The weir plate can be raised or lowered in height under the action of the lifting drive device; The displacement sensor can detect the height rise and fall of the weir plate; Each flow channel is provided with a plurality of cameras equidistantly arranged along the length direction, and each camera can take a picture of the bottom surface of the flow channel; the bottom surface color of each flow channel is different from the color of the sludge; The controller is connected with the lifting drive device, the displacement sensor and all the cameras respectively.

2. The rainwater storage tank hydraulic self-flushing and silting device based on image recognition technology according to claim 1 is characterized in that: The camera is an openMV camera.

3. The rainwater storage tank hydraulic self-flushing and silting device based on image recognition technology according to claim 1 is characterized in that: The controller is Infineon TC264 microcontroller.

4. The rainwater storage tank hydraulic self-flushing and silting device based on image recognition technology according to claim 1 is characterized in that: Two adjacent flow channels are separated by channel partitions arranged along the length direction; cameras are arranged on the top of the corresponding channel partitions and are evenly spaced at intervals of 5m along the length direction.

5. The rainwater storage tank hydraulic self-flushing and silting device based on image recognition technology according to claim 2 is characterized in that: The lifting drive device is an oil cylinder, and the bottom of the oil cylinder piston rod is connected to the bottom of the weir plate through a transverse connecting rod.

6. The rainwater storage tank hydraulic self-flushing and silting device based on image recognition technology according to claim 5 is characterized in that: Each lifting overflow weir also includes a support frame, in which a guide groove is arranged; and pulleys which are in rolling contact with the side walls of the guide groove are arranged on the end faces on both sides of the weir plate.

7. The rainwater storage tank hydraulic self-flushing and silting device based on image recognition technology according to claim 6 is characterized in that: Each lifting overflow weir also includes a rubber seal; the rubber seal is arranged in the guide groove and is used for sealing the oil cylinder.

8. The rainwater storage tank hydraulic self-flushing and silting device based on image recognition technology according to claim 2 is characterized in that: The top surface of each weir plate is a concave arc surface.

9. The rainwater storage tank hydraulic self-flushing and silting device based on image recognition technology according to claim 1 is characterized in that: The bottom of the water storage chamber is installed on the curved side wall through a plurality of foundation columns, and the height of the foundation columns is not less than the lifting height of the weir plate.

10. The rainwater storage tank hydraulic self-flushing and silting device based on image recognition technology according to claim 1 is characterized in that: n =6. The bottom surface of the rainwater storage tank corridor is provided with a slope that is high in the front and low in the back.

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