A water treatment device for a hydropower station reservoir and its usage method

Abstract

This invention discloses a hydropower station reservoir cleaning device and its usage method, including floats, limiting cables, and shore-side fixing seats. Two limiting cables are arranged between the two shore-side fixing seats, and multiple floats are arranged on the limiting cables. Two adjustment elongated holes are provided on the shore-side fixing seats. The ends of the limiting cables are equipped with elastic stretching structures, which are located on the corresponding adjustment elongated holes. Corresponding sliding cables are arranged on the adjustment elongated holes. Sliding frames are provided on the two sliding cables, and first and second float propellers are respectively arranged on the sliding frames. A swinging debris-driving structure is provided on the portion of the sliding frame above the second float propeller. This invention combines the characteristics of a dredging vessel, a debris barrier, and a bar screen. Based on the structure of the debris barrier, it sets up a sliding frame and a swinging debris-driving structure to push the intercepted debris to the shore, where it can be cleaned out by the bar screen, achieving automated, all-weather, and highly efficient hydropower station reservoir cleaning.

Description

Technical Field

[0001] This invention relates to the technical field of cleaning equipment for hydropower station reservoirs, and in particular to a cleaning device for hydropower station reservoirs and its usage method. Background Technology

[0002] Hydropower station reservoirs typically see a lot of floating debris floating into the water from upstream. Various equipment, such as dredging boats, debris barriers, and bar screens, are used for cleaning. However, the cleaning efficiency is relatively low. For example, although dredging boats can retrieve debris from underwater and the surface, they can only clean up debris for a limited time. Debris barriers intercept debris and require subsequent retrieval. Bar screens are generally installed at the drainage outlet to filter and remove debris. The relevant technological hotspots mainly focus on improving the aforementioned equipment. For example, Chinese patent (CN218980708U) discloses a sewage treatment device that facilitates the collection of sludge, belonging to the field of bar screens. It includes a bar screen body, with a sludge holding device installed below the bar screen body. The sludge holding device consists of a sludge holding frame and a drain door. There are two drain door panels symmetrically installed on the sludge holding frame. Two water compression structures are symmetrically installed on the sludge holding frame. The water compression structure consists of a cylinder structure and a water squeezing plate. The water squeezing plate is installed on a telescopic rod on the cylinder structure. Sludge collection rake teeth are installed on the bar screen body. The sludge holding device is located below the slag discharge port on the bar screen body. By setting the sludge holding device below the slag discharge port of the bar screen body and setting the water compression structure on the sludge holding device, the workload of workers collecting and transporting solid waste can be reduced, the efficiency of solid waste collection can be improved, and ultimately, solid waste can be easily collected. Chinese patent (CN217810871U) discloses a small amphibious river cleaning vessel based on fully automatic compression, relating to the field of water conservancy engineering technology. The vessel includes a garbage cleaning boat with a drive propeller installed at the stern. Connecting rods are provided on both sides of the vessel, with air cushions at the bottom of each rod. Multiple drive wheels are symmetrically installed on the bottom of the vessel. Garbage processing curved plates are fixedly connected between the inner walls of the vessel. A rectangular cavity is formed within the garbage processing curved plates, and a dirty water collection cavity is formed at the bottom of the rectangular cavity. The rectangular cavity is divided into a garbage compression processing cavity and a garbage pushing cavity from top to bottom. Compared to large salvage vessels, this equipment is small in size and low in cost, requires no multiple people to work simultaneously, is simple to operate, saves time and labor, and can enter small areas to carry out salvage work. It can effectively reduce the labor burden of workers, lower the difficulty of salvage, and has rich functions.Chinese Patent (CN217556863U) discloses a debris-blocking device for a power station inlet that can divert debris. The device includes multiple floating boxes connected by connecting shackles and debris-blocking grids installed on the floating boxes. One or more debris-guiding mechanisms are installed on the upstream side of each steel floating box where the debris-blocking grid is installed. Each debris-guiding mechanism includes a fixed frame, rotating rake teeth, and a drive motor. The debris-guiding mechanism is installed on the floating box through the fixed frame, and the drive motor is fixedly installed on the fixed frame. The rotating shaft of the rotating rake teeth is connected to the output shaft of the drive motor, and the drive motor controls the rotating rake teeth to rotate in the direction perpendicular to the water flow. The rotating rake teeth on each floating box rotate in the same direction. The device has a simple structure and is easy to use. It can quickly clean up or move debris in front of the debris-blocking channel to places at both ends of the debris-blocking channel that are easy to clean, thus preventing debris from accumulating in front of the power station and affecting the power generation head.

[0003] However, these existing devices are generally used individually and are not well integrated to complete the coordinated use. Therefore, based on these existing technologies and according to the cleaning needs of hydropower station reservoirs, a cleaning device that combines the features of a dredging vessel, a debris barrier, and a bar screen has been specially developed, and the cleaning process has been improved accordingly to achieve automated, all-weather, and highly efficient cleaning of hydropower station reservoirs. Summary of the Invention

[0004] To overcome the technical problems described in the background section, this invention provides a hydropower station reservoir cleaning device and its usage method. Combining the characteristics of a dredging vessel, a debris barrier, and a bar screen cleaner, and based on the structure of the debris barrier, a sliding frame and a swing-type debris-driving structure are set up to push the intercepted debris to the shore, where it can be cleaned out by the bar screen cleaner on the shore. This achieves automated, all-weather, and highly efficient hydropower station reservoir cleaning.

[0005] The technical solution of this invention is as follows:

[0006] This invention provides a debris removal device for a hydropower station reservoir, comprising floats, limiting cables, and shore-side fixing seats. Two parallel limiting cables are provided between the two shore-side fixing seats, and multiple floats are provided on the limiting cables to form a debris barrier on the water surface. The shore-side fixing seats are provided with two parallel and vertically extending adjustment holes. The ends of the limiting cables near the shore-side fixing seats are provided with elastic stretching structures, which are detachably mounted on the corresponding adjustment holes. The portion of the adjustment holes above the elastic stretching structures is provided with corresponding sliding cables. The two sliding cables between the two shore-side fixing seats are parallel to each other, and sliding frames are provided on the two sliding cables. The portions of the sliding frames on the debris barrier facing the downstream and upstream sides of the debris barrier are respectively provided with a first float propeller and a second float propeller. The portion of the sliding frames above the second float propeller is provided with a swinging debris-driving structure. The sliding frames are provided with a controller, which is electrically connected to the swinging debris-driving structure, the first float propeller, and the second float propeller.

[0007] Furthermore, the oscillating decontamination structure includes a servo motor, a crank, a connecting rod, a rocker arm, a rocker frame, and a rocker plate. The servo motor is located on the right side of the sliding frame near the counter-current side. The main shaft of the servo motor faces upward and extends through the sliding frame, with the upper end connected to the crank. The upper end of the sliding frame, near the counter-current side and away from the servo motor, is rotatably connected to the rocker arm. A connecting rod is provided between the rocker arm and the crank to form a crank-rocker mechanism. The end of the rocker arm away from the sliding frame is provided with a rocker frame extending along the extension line of the rocker arm, and a rocker plate is provided on the rocker frame.

[0008] Furthermore, the float has a block-shaped structure and concave grooves on its sides on the downstream and upstream sides, respectively, and the first float propeller and the second float propeller are respectively attached to the corresponding concave grooves.

[0009] Furthermore, the first float propulsion device includes a downstream float and a downstream propulsion device. The downstream float is used to abut against the concave groove of the float facing downstream, and the right end is provided with a downstream propulsion device for pushing the downstream float to the left underwater.

[0010] Furthermore, the second float propulsion device includes an upstream float and an upstream propulsion device. The upstream float is used to abut against the concave groove of the float facing the upstream side, and the left end is provided with an upstream propulsion device for pushing the downstream float to the right underwater. The right end of the upstream float has a pointed structure.

[0011] Furthermore, the portion of the sliding frame that contacts the corresponding sliding cable is provided with a load-bearing pulley, and the portion of the sliding frame below the load-bearing pulley is provided with a constraint crossbar, which is located below the sliding cable.

[0012] Furthermore, the elastic stretching structure includes a tension spring, a sleeve, and a first bolt. The tension spring is located at the end of the limiting cable and extends toward the corresponding shore fixing seat. The end of the tension spring toward the corresponding shore fixing seat is provided with a sleeve, which is attached to the corresponding adjustment elongated hole and locked onto the adjustment elongated hole by the first bolt.

[0013] Furthermore, a swing frame of the same length as the float itself is hinged to the center of the lower end face, and a net is installed inside the swing frame.

[0014] Furthermore, a vertically extending splash guard is provided on the upper surface of the float facing the countercurrent side. The splash guard extends vertically and its length is the same as that of the float. The upper end of the splash guard does not contact the sliding frame.

[0015] Accordingly, the present invention also provides a method for cleaning up a hydropower station reservoir using the above-mentioned hydropower station reservoir cleaning device, comprising the following steps:

[0016] S1. Deploy the water pollution control equipment in the reservoir area between the left and right banks of the reservoir area to intercept water pollution on the water surface.

[0017] S2. On the left and right banks of the reservoir area, near the counter-current side of the reservoir cleaning device of the hydropower station, there are bar screens that extend from the bank into the water.

[0018] S3. During the process of the sliding frame being driven from the left bank to the right bank by the second float propeller on the cleaning device in the reservoir area of ​​the hydropower station, the bar screen cleaning machine on the left bank stops running, and the bar screen cleaning machine on the right bank starts running. The swinging debris-driving structure on the sliding frame swings left and right continuously, pushing the horizontal floating debris near the water surface towards the right bank. The bar screen cleaning machine on the right bank then scoops up the floating debris on the water surface and brings it ashore.

[0019] S4. After the sliding frame approaches the right bank, the second pontoon propeller stops operating and the first pontoon propeller starts operating. The sliding frame moves from the right bank to the left bank. The bar screen on the right bank stops operating and the bar screen on the left bank starts operating. The swinging debris-driving structure on the sliding frame swings left and right continuously, pushing the horizontal floating debris near the water surface towards the left bank. The bar screen on the left bank scoops the floating debris onto the shore.

[0020] S5. The sliding frame moves back and forth between the left and right banks, continuously pushing the horizontally floating debris to the corresponding shore, where the corresponding bar screen cleaner will dredge the floating debris onto the shore.

[0021] Because the present invention employs the above-mentioned technology, its specific positive and beneficial effects compared with the prior art are as follows:

[0022] 1. This invention combines the features of a salvage vessel, a debris barrier, and a bar screen cleaner. Based on the structure of the debris barrier, it is equipped with a sliding frame and a swing-type debris-driving structure to push the intercepted debris to the shore, where the bar screen cleaner can remove the debris. This achieves automated, all-weather, and highly efficient debris removal in the hydropower station reservoir area.

[0023] 2. This invention features two parallel limiting cables between two fixed shore supports, each with multiple floats forming a surface debris barrier. An elastic stretching structure connects the limiting cables to the shore supports, facilitating elastic displacement of the floats after impact with large floating debris such as tree branches and trunks. This effectively improves the floats' impact resistance. Furthermore, with a first and second float propeller positioned on the downstream and upstream sides of the sliding frame, during the sliding motion of either the first or second float propeller, the floats, either directly abutting against the concave grooves on the floats, will obstruct the movement of the first or second float propeller after being struck by tree branches or trunks. The controller on the sliding frame will send an alarm to a remote control terminal upon detecting difficulty in moving the sliding frame, allowing staff to promptly clear large debris such as tree branches and trunks.

[0024] 3. In this invention, the swinging debris-driving structure is set on the upper part of the sliding frame near the countercurrent side. A crank-rocker mechanism is used as the actuating component of the swinging debris-driving structure. The crank is set on the right side of the rocker. The main stroke of debris driving is from left to right. The second float propeller provides the sliding frame with the driving force to move to the right. At this time, the first float propeller stops. The secondary stroke of debris driving is from right to left. The first float propeller provides the sliding frame with the driving force to move to the left. At this time, the second float propeller stops. Since the crank is set on the right side of the rocker, the swing plate swings rapidly from left to right during the main stroke of debris driving, while swinging slowly from right to left. This helps to push the floating debris to the right, making it easier for the debris to be pushed and collected on the right bank so that the bar screen set on the right bank can collect the debris. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the hydropower station reservoir cleaning device of the present invention;

[0026] Figure 2 This is a schematic diagram of the sliding frame structure of the present invention from a certain left-side view.

[0027] Figure 3 This is a schematic diagram of the sliding frame structure of the present invention from a certain right-view perspective;

[0028] Figure 4 This is a schematic diagram of the sliding frame structure of the present invention from a top view.

[0029] Figure 5 This is a simplified schematic diagram of the crank-rocker mechanism of the present invention.

[0030] In the diagram: 1. Power cable, 2. Sliding cable, 3. Sliding frame, 4. Downstream side float, 5. Downstream side thruster, 6. Buoy, 7. Bank fixed seat, 8. Bank pole, 9. Swing frame, 10. Netting, 11. Concave groove, 12. Splash guard, 13. Upstream side float, 14. Servo motor, 15. Swing frame, 16. Upstream side thruster, 17. Swing plate, 18. Limiting cable, 19. Tension spring, 20. Adjustment elongated hole, 21. Connecting rod, 22. Rocker arm, 23. Crank, 24. Controller, 25. Bearing pulley, 26. Constraint crossbar, 27. Pulley frame, 28. First connecting arm, 29. First constraint ring, 30. Sleeve block, 31. Second connecting arm, 32. Second constraint ring, 33. Third connecting arm, 34. Third constraint ring. Detailed Implementation

[0031] Example 1:

[0032] like Figures 1-5 As shown, the present invention provides a hydropower station reservoir cleaning device, including a float 6, a limiting cable 18, a bank fixing seat 7 and a bank insertion rod 8. The bank fixing seat 7 is fixed and locked to the bank by the bank insertion rod 8 inserted into the bank. Two parallel limiting cables 18 are provided between the two bank fixing seats 7. The float 6 is provided with two sleeves 30. The limiting cables 18 connect multiple floats 6 together by passing through multiple sleeves 30 in sequence to form a water surface debris barrier. The side of the water surface debris barrier opposite to the water flow direction is the counter-current side, and the side of the water surface debris barrier with the same water flow direction is the downstream side. A lot of floating debris will accumulate on the counter-current side. The float 6 has a square structure and concave grooves 11 are provided on the sides of the downstream and counter-current sides respectively. The first float propeller and the second float propeller are respectively attached to the corresponding concave grooves 11.

[0033] To adapt to water level changes and adjust the height of the debris barrier in a timely manner, two parallel and vertically extending adjustment holes 20 are provided on the shore-side fixed base 7. Simultaneously, an elastic stretching structure is provided at the end of the limiting cable 18 near the shore-side fixed base 7. This elastic stretching structure is mainly used to prevent large floating objects such as tree branches and trunks from impacting the floats 6 and causing damage. It helps multiple floats 6 to elastically shift after being impacted by large floating debris such as tree branches and trunks on the water surface, effectively improving the impact resistance of the floats 6. Furthermore, because a first float propeller and a second float propeller are respectively installed on the downstream and upstream sides of the sliding frame 3, the first float propeller… During the sliding frame 3 of the first or second float propeller, the first and second float propellers or the concave grooves 11 on the float block 6 respectively, after being hit by tree branches and trunks on the water surface, the float block 6 will be removed from its original position, which will hinder the movement of the first or second float propeller. This will cause the sliding frame 3 to vibrate significantly because it cannot move. After the vibration sensor carried by the controller 24 on the sliding frame 3 detects this large amplitude vibration, the controller 24 will send an alarm to the remote control terminal and stop moving in the original direction and move back to the shore in the opposite direction so that the staff can clean up the large debris such as tree branches and trunks in time before continuing to work.

[0034] Specifically, the elastic stretching structure is detachably installed on the corresponding adjustment elongated hole 20. The portion of the adjustment elongated hole 20 above the elastic stretching structure is provided with a corresponding sliding cable 2. The two sliding cables 2 located between the two shore fixed seats 7 are parallel to each other. The two sliding cables 2 are provided with a sliding frame 3. The portion of the sliding frame 3 located on the water surface debris barrier and facing the downstream and upstream sides of the water surface debris barrier is provided with a first float propeller and a second float propeller, respectively. The portion of the sliding frame 3 above the second float propeller is provided with a swinging debris-driving structure. The sliding frame 3 is provided with a controller 24. The controller 24 is electrically connected to the swinging debris-driving structure, the first float propeller, and the second float propeller, respectively. The controller 24 is a PLC controller, and the PLC controller is provided with a vibration sensor.

[0035] Specifically, the oscillating anti-fouling structure includes a servo motor 14, a crank 23, a connecting rod 21, a rocker arm 22, a oscillating frame 15, and a oscillating plate 17. The servo motor 14 is located on the right side of the sliding frame 3 near the counter-current side. The main shaft of the servo motor 14 faces upward and extends through the sliding frame 3, with the upper end connected to the crank 23. The upper end face of the sliding frame 3, near the counter-current side and away from the servo motor 14, is rotatably connected to the rocker arm 22. A connecting rod 21 is provided between the rocker arm 22 and the crank 23, forming a crank-rocker mechanism, simplified as follows: Figure 5As shown, angle α < angle β, and the rotational speed of crank 23 is constant. Therefore, rocker arm 22 moves quickly during the crank-rocker mechanism's stroke at angle α, which is a sharp movement, facilitating the movement of floating debris and dirt to the right. During the crank-rocker mechanism's stroke at angle β, rocker arm 22 moves slowly, which is a gentle return, reducing the movement of floating debris and dirt to the left. The end of rocker arm 22 away from sliding frame 3 is provided with a swing frame 15 extending along the extension line of rocker arm 22. The swing frame 15 is provided with a swing plate 17. In other words, during use, the swinging debris-driving structure is set on the upper part of sliding frame 3 near the countercurrent side, using the crank 23-rocker arm 22 mechanism as the swinging debris-driving mechanism. The structure's actuating components include a crank 23 located on the right side of the rocker arm 22. The main stroke for decontamination is from left to right, and the second float propeller provides the sliding frame 3 with a driving force to move to the right. At this time, the first float propeller stops. The secondary stroke for decontamination is from right to left, and the first float propeller provides the sliding frame 3 with a driving force to move to the left. At this time, the second float propeller stops. Because the crank 23 is located on the right side of the rocker arm 22, the rocker plate 17 swings rapidly from left to right during the main decontamination stroke, while swinging gently from right to left. This helps to push floating debris to the right, facilitating the accumulation of debris on the right bank, so that the bar screen on the right bank can collect the debris.

[0036] The first float propulsion device includes a downstream float 4 and a downstream propulsion device 5. The downstream float 4 is used to abut against the concave groove 11 of the float 6 facing downstream, and the right end is provided with a downstream propulsion device 5 for pushing the downstream float 4 to the left underwater.

[0037] The second float propulsion device includes a counter-current side float 13 and a counter-current side propeller 16. The counter-current side float 13 is used to abut against the concave groove 11 of the float 6 facing the counter-current side, and the left end is provided with a counter-current side propeller 16 for pushing the downstream side float 4 to the right underwater. The right end of the counter-current side float 13 has a pointed structure.

[0038] Among them, the downstream-side thruster 5 and the upstream-side thruster 16 both adopt electric underwater thrusters, which can be directly powered by electricity generated by the hydropower station.

[0039] The connection between the sliding frame 3 and the downstream float 4 and the upstream float 13 is mainly achieved by providing first constraint rings 29 at both ends of the downstream float 4. The two ends of the first constraint rings 29 are wrapped around the downstream float 4 and abut together, and then connected to the first connecting arm 28 on the sliding frame 3 by bolts. The two ends of the upstream float 13 are provided with third constraint rings 34 and second constraint rings 32 at both ends. The third constraint ring 34 is wrapped around the left end of the upstream float 13 and abut together, and then connected to the third connecting arm 33 on the sliding frame 3 by bolts. The second constraint ring 32 is at the right end of the upstream float 13 and abuts together, and then connected to the second connecting arm 31 on the sliding frame 3 by bolts. Note that in order to place the servo motor 14, a groove for accommodating a part of the servo motor 14 is provided on the second connecting arm 31.

[0040] The sliding frame 3 is provided with four rectangular pulley frames 27 extending downwards. A load-bearing pulley 25 is embedded in and rotatably connected to the pulley frame 27. The load-bearing pulley 25 presses against the corresponding sliding cable 2. A constraint crossbar 26 is provided on the part of the pulley frame 27 below the load-bearing pulley 25. The constraint crossbar 26 is located below the sliding cable 2 and is used to constrain the load-bearing pulley 25 from the corresponding sliding cable 2.

[0041] The elastic stretching structure includes a tension spring 19, a sleeve, and a first bolt. The tension spring 19 is located at the end of the limiting cable 18 and extends toward the corresponding shore fixing seat 7. The end of the tension spring 19 toward the corresponding shore fixing seat 7 is provided with a sleeve. The sleeve is attached to the corresponding adjustment elongated hole 20 and locked onto the adjustment elongated hole 20 by the first bolt.

[0042] Among them, the lower end face of the float 6 is hinged to a swing frame 9 with the same length as its left and right sides, and a net 10 is provided inside the swing frame 9.

[0043] Among them, the upper end face of the float 6 facing the counter-current side is provided with a vertically extending splash plate 12. The splash plate 12 extends vertically and its length is the same as that of the float 6. The upper end of the splash plate 12 does not contact the sliding frame 3.

[0044] Among them, a power cable 1 is provided between the upper ends of the two shore fixed seats 7. The power cable 1 is used to carry the power cable for the controller 24. A buckle is set every 0.5m on the cable, and the buckle is nested on the power cable 1, so as to prevent the cable from falling into the water during the movement of the sliding frame 3.

[0045] Accordingly, the present invention also provides a method for cleaning up pollution in a hydropower station reservoir area, comprising the following steps:

[0046] S1. Deploy the cleaning and decontamination devices in the reservoir area of ​​the hydropower station on the left and right banks and between the left and right banks to intercept debris and pollutants floating down from the upstream with the water flow on the water surface of the reservoir area.

[0047] S2. At a distance of about 0.5m-1m from the countercurrent side of the end of the sewage interception drain on both the left and right banks of the reservoir, a bar screen is installed that extends from the bank into the water.

[0048] S3. During the process of moving the sliding frame 3 from the left bank to the right bank by the second float propeller on the cleaning device in the reservoir area of ​​the hydropower station, the bar screen cleaner on the left bank stops running and the bar screen cleaner on the right bank starts running. The swinging debris-driving structure on the sliding frame 3 swings left and right continuously, pushing the horizontal floating debris near the water surface towards the right bank. The bar screen cleaner on the right bank scoops the floating debris on the water surface onto the shore.

[0049] S4. After the sliding frame 3 approaches the right bank, the second pontoon propeller stops operating and the first pontoon propeller starts operating. The sliding frame 3 moves from the right bank to the left bank. The bar screen on the right bank stops operating and the bar screen on the left bank starts operating. The swinging debris-driving structure on the sliding frame 3 swings left and right continuously, pushing the horizontal floating debris near the water surface towards the left bank. The bar screen on the left bank scoops the floating debris onto the shore.

[0050] S5 and sliding frame 3 move back and forth between the left and right banks, continuously pushing the horizontally floating debris to the corresponding shore, where the corresponding bar screen cleaner dredges the floating debris to the shore, realizing automated, all-weather, and highly efficient cleaning of the hydropower station reservoir area.

[0051] Example 2:

[0052] Based on Example 1, the method for cleaning the reservoir area of ​​a hydropower station has been improved to reduce the overall equipment investment cost. A method for cleaning the reservoir area of ​​a hydropower station with a bar screen installed on one side is provided, comprising the following steps:

[0053] S1. Deploy the cleaning and decontamination devices in the reservoir area of ​​the hydropower station on the left and right banks and between the left and right banks to intercept debris and pollutants floating down from the upstream with the water flow on the water surface of the reservoir area.

[0054] S2. A screen cleaning machine is installed on the right bank of the reservoir, about 0.5m-1m away from the end of the water surface interception drain on the counter-current side, extending from the bank into the water.

[0055] S3. During the process of moving the sliding frame 3 from the left bank to the right bank by the second float propeller on the cleaning device in the reservoir area of ​​the hydropower station, the bar screen cleaner starts to run. The swinging debris-driving structure on the sliding frame 3 swings left and right continuously, pushing the horizontal floating debris near the water surface towards the right bank. The bar screen cleaner on the right bank scoops the floating debris on the water surface onto the shore.

[0056] S4. After the sliding frame 3 approaches the right bank, the second float propeller stops running, the first float propeller starts running, the sliding frame 3 moves from the right bank to the left bank, the bar screen stops running, and the swinging debris-driving structure on the sliding frame 3 also stops running, completing the return action from the right bank to the left bank, in preparation for the next time to drive floating debris to move to the right bank from the left bank to the right bank.

[0057] S5 and sliding frame 3 move back and forth between the left and right banks, continuously pushing the horizontally floating debris to the right bank, where the bar screen cleaner dredges the floating debris to the shore, achieving automated, all-weather, and highly efficient cleaning of the hydropower station reservoir area.

Claims

1. A water level cleaning device for a hydropower station reservoir, comprising floats (6), limiting cables (18), and shore-side fixing seats (7), wherein two parallel limiting cables (18) are provided between the two shore-side fixing seats (7), and multiple floats (6) are provided on the limiting cables (18) to form a water surface debris barrier, characterized in that: Two parallel and vertically extending adjustment holes (20) are provided on the shore fixed seat (7). The end of the limiting cable (18) near the shore fixed seat (7) is provided with an elastic stretching structure. The elastic stretching structure is detachably set on the corresponding adjustment hole (20). The part of the adjustment hole (20) above the elastic stretching structure is provided with a corresponding sliding cable (2). The two sliding cables (2) between the two shore fixed seats (7) are parallel to each other. The two sliding cables (2) are provided with a sliding frame (3). The part of the sliding frame (3) on the water surface debris barrier and facing the downstream and upstream sides of the water surface debris barrier is provided with a first float propeller and a second float propeller, respectively. The part of the sliding frame (3) above the second float propeller is provided with a swinging debris-driving structure. The sliding frame (3) is provided with a controller (24). The controller (24) is connected to the swinging debris-driving structure. The first float propeller and the second float propeller are electrically connected. The swinging sludge-driving structure includes a servo motor (14), a crank (23), a connecting rod (21), a rocker arm (22), a swing frame (15), and a swing plate (17). The right side of the sliding frame (3) near the countercurrent side is provided with a servo motor (14). The main shaft of the servo motor (14) is facing upward and passes through the sliding frame (3) and the upper end is connected to the crank (23). The upper end face of the sliding frame (3) near the countercurrent side and away from the servo motor (14) is rotatably connected to the rocker arm (22). A connecting rod (21) is provided between the rocker arm (22) and the crank (23) to form a crank (23) rocker arm (22) mechanism. The end of the rocker arm (22) away from the sliding frame (3) is provided with a swing frame (15) extending along the extension line of the rocker arm (22). A swing plate (17) is provided on the swing frame (15).

2. The hydropower station reservoir cleaning device according to claim 1, characterized in that: The float (6) has a square structure and has concave grooves (11) on its side facing the downstream and upstream sides, respectively. The first float propeller and the second float propeller are respectively attached to the corresponding concave grooves (11).

3. A hydropower station reservoir cleaning device according to claim 2, characterized in that: The first float propulsion device includes a downstream float (4) and a downstream propulsion device (5). The downstream float (4) is used to abut against the concave groove (11) of the float (6) facing downstream, and the downstream propulsion device (5) is provided at the right end for pushing the downstream float (4) to the left underwater.

4. A hydropower station reservoir cleaning device according to claim 3, characterized in that: The second float propulsion unit includes a counter-current side float (13) and a counter-current side propeller (16). The counter-current side float (13) is used to abut against the concave groove (11) of the float (6) facing the counter-current side and the left end is provided with a counter-current side propeller (16) for pushing the downstream side float (4) to the right underwater. The right end of the counter-current side float (13) has a pointed structure.

5. A hydropower station reservoir cleaning device according to claim 4, characterized in that: The sliding frame (3) is provided with a bearing pulley (25) in the part that contacts the corresponding sliding cable (2), and a constraint crossbar (26) is provided on the part of the sliding frame (3) below the bearing pulley (25), with the constraint crossbar (26) located below the sliding cable (2).

6. A hydropower station reservoir cleaning device according to claim 5, characterized in that: The elastic tensioning structure includes a tension spring (19), a sleeve and a first bolt. The tension spring (19) is located at the end of the limiting cable (18) and extends toward the corresponding shore fixing seat (7). The end of the tension spring (19) toward the corresponding shore fixing seat (7) is provided with a sleeve. The sleeve is attached to the corresponding adjustment long hole (20) and locked onto the adjustment long hole (20) by the first bolt.

7. A hydropower station reservoir cleaning device according to claim 6, characterized in that: A swing frame (9) of the same length as itself is hinged to the center of the lower end face of the float (6), and a net (10) is provided inside the swing frame (9).

8. A hydropower station reservoir cleaning device according to claim 7, characterized in that: A vertically extending splash guard (12) is provided on the upper part of the float (6) facing the counter-current side. The splash guard (12) extends vertically and its length is the same as that of the float (6). The upper end of the splash guard (12) does not contact the sliding frame (3).

9. The method of using the hydropower station reservoir cleaning device according to any one of claims 1-8, characterized in that: Includes the following steps: S1. Deploy the water pollution control equipment in the reservoir area between the left and right banks of the reservoir area to intercept water pollution on the water surface. S2. On the left and right banks of the reservoir area, near the counter-current side of the reservoir cleaning device of the hydropower station, there are bar screens that extend from the bank into the water. S3. During the process of moving the sliding frame (3) from the left bank to the right bank by the second float propeller on the cleaning device in the reservoir area of ​​the hydropower station, the bar screen cleaner on the left bank stops running and the bar screen cleaner on the right bank starts running. The swinging debris-driving structure on the sliding frame (3) swings left and right continuously, pushing the horizontal floating debris near the water surface towards the right bank. The bar screen cleaner on the right bank retrieves the floating debris from the water surface and brings it to the shore. S4. After the sliding frame (3) approaches the right bank, the second pontoon propeller stops running and the first pontoon propeller starts running. The sliding frame (3) moves from the right bank to the left bank. The bar screen cleaner on the right bank stops running and the bar screen cleaner on the left bank starts running. The swinging debris-driving structure on the sliding frame (3) swings left and right continuously, pushing the horizontal floating debris near the water surface towards the left bank. The bar screen cleaner on the left bank retrieves the floating debris from the water surface and brings it to the shore. S5. The sliding frame (3) moves back and forth between the left and right banks, continuously pushing the horizontal floating debris to the corresponding shore, and the corresponding bar screen cleaning machine scoops the floating debris from the water surface onto the shore.

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