A kind of hydroelectric power station trash rack anti-blocking device and system

Abstract

The application discloses a kind of water power station trash rack anti-blocking device and system, device includes injection assembly, including nozzle, adjusting piece being arranged at the outside of the nozzle, and trigger piece being arranged at one end of the adjusting piece;And, swing assembly, including fixed plate being arranged at the nozzle, transmission part being arranged with one side of the fixed plate, frame being arranged at the outside of the injection assembly, and gas pipeline being arranged at the top of the frame, system includes booster unit and injection unit.The application realizes the situation of preventing trash rack from being blocked by scientific method, once there is a large amount of floating object, it can be far or local to start system blowing device, adjust the blowing direction of spray head after water surface garbage is removed, enhance the water capacity of trash rack, relieve the pressure of trash rack before and after pressure difference.

Description

Technical Field

[0001] This invention relates to the field of trash rack cleaning technology, and in particular to a device and system for preventing clogging of trash racks in hydropower stations. Background Technology

[0002] Currently, in some hydropower stations, floating debris gradually accumulates in front of the coarse trash racks in the reservoir area during operation. If this floating debris is not cleaned or discharged in a timely manner, the trash racks will gradually become blocked, increasing the pressure difference between the front and back of the racks. This endangers the safe operation of the generator units and poses a certain hidden danger to the safe operation of the power system. Currently, the methods used are usually manual cleaning by on-site personnel using rakes, long poles, or trash rack cleaning machines. However, these methods are inefficient and cannot completely remove the debris.

[0003] Based on this, a trash rack anti-clogging device is designed that can automatically adjust the device to the water surface to blow away floating debris according to the water level changes in the reservoir area of ​​the hydropower station gate, blowing the floating garbage towards the sewage gate entrance and preventing floating debris from accumulating in front of the trash rack. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the above and / or existing anti-clogging devices for trash racks in hydropower stations, the present invention is proposed.

[0006] Therefore, one of the objectives of this invention is to provide a device for preventing clogging of trash racks in hydropower stations, which aims to solve the problem that ordinary gas nozzles cannot adaptively change the gas pressure as needed.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a device for preventing blockage of a trash rack in a hydropower station, comprising: a spraying assembly including a nozzle, an adjusting member disposed outside the nozzle, and a trigger member disposed at one end of the adjusting member; and a swinging assembly including a fixed plate disposed at the nozzle, a transmission member disposed on one side of the fixed plate, a frame disposed outside the spraying assembly, and an air supply pipe disposed at the top of the frame.

[0008] As a preferred embodiment of the anti-clogging device and system for the trash rack of the hydropower station described in this invention, the adjusting component includes a sliding ring disposed on the nozzle pipe, the sliding ring being slidably engaged with the nozzle pipe, a first spring being disposed on one side of the sliding ring, the two ends of the first spring being fixedly connected to one side of the sliding ring and the nozzle pipe respectively, a push rod being fixedly connected to the other side of the sliding ring, and a sliding groove being disposed on one side of the sliding ring.

[0009] As a preferred embodiment of the anti-clogging device and system for the trash rack of the hydropower station described in this invention, the adjusting component further includes a conical arc plate slidably connected to the push rod, the conical arc plate being in contact with the conical outer surface of the nozzle, and an installation groove and an installation hole being provided on the inner side of the conical arc plate; the adjusting component further includes a rubber ring disposed in the installation groove and an elastic rope disposed in the installation hole.

[0010] As a preferred embodiment of the anti-clogging device and system for the trash rack of the hydropower station described in this invention, the triggering element includes a pulley disposed in the chute, a swing arm that rotates with the pulley, and a rotating shaft fixedly connected to the other end of the swing arm. The two ends of the rotating shaft are also provided with a No. 1 gear.

[0011] The trigger also includes a pressure rod that meshes with the first gear. A second spring is also sleeved on the outside of the pressure rod. One end of the pressure rod is rounded and a shaped disk is provided at its end. The end face of the shaped disk is provided with an arc surface, and the end of the pressure rod slides in cooperation with the arc surface.

[0012] As a preferred embodiment of the anti-clogging device and system for the trash rack of the hydropower station described in this invention, the fixed plate is fixedly connected to the nozzle pipe, and a turntable is also provided on one side of the fixed plate. The rotating shaft is rotatably engaged with the turntable, and the pressure rod is slidably engaged with the fixed plate.

[0013] The transmission component includes a second gear disposed at the bottom of the fixed plate, the second gear being fixedly connected to the fixed plate, and the transmission component also includes a toothed plate disposed on one side of the second gear and meshing with it, the toothed plate having serrations on both sides.

[0014] The transmission component also includes a motor disposed at the other end of the gear plate, and the output end of the motor is provided with a No. 3 gear, which meshes with the gear plate.

[0015] As a preferred embodiment of the anti-clogging device and system for the trash rack of the hydropower station described in this invention, the frame is provided with a roller at both ends, a motor fixing frame is provided at the bottom of the frame, the irregularly shaped disk is fixedly connected to the inside of the frame through a connecting column, the toothed plate is slidably engaged with the inside of the frame, and the shaft of the second gear is rotatably engaged with the inside of the frame.

[0016] The beneficial effect of this device is that when the nozzle changes the injection direction and needs to shoot the gas further, the nozzle can adapt to change the outlet gas pressure by changing the size of its orifice, without having to change the pressurization equipment.

[0017] Another objective of this invention is to provide a system for preventing clogging of trash racks in hydropower stations, which aims to solve the problem that existing equipment cannot automatically blow away floating debris accumulated in front of the trash racks according to the reservoir water level.

[0018] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a hydropower station trash rack anti-clogging system, the system including an anti-clogging device, a pressurization unit including a pressurization device and an air supply device connected to the pressurization device; and an injection unit including an anti-clogging device connected to the air supply device and lifting devices disposed at both ends of the anti-clogging device.

[0019] As a preferred embodiment of the anti-clogging system for the trash rack of the hydropower station described in this invention, the booster equipment includes a main air compressor unit and a standby air compressor unit, the air transmission equipment includes a high-pressure gas tank connected to the booster equipment, and an air compressor unit outlet check valve, an air compressor unit outlet maintenance valve, and a high-pressure gas tank front valve are sequentially installed on the pipeline connecting the booster equipment and the high-pressure gas tank. A high-pressure gas tank outlet valve and a pressure equalization pipe front valve are sequentially installed on the pipeline connecting the high-pressure gas tank and the pressure equalization pipe.

[0020] As a preferred embodiment of the anti-clogging system for the trash rack of the hydropower station described in this invention, the lifting device includes a winch motor disposed on both sides of the trash rack of the hydropower station, and a cable disposed at the output end of the winch motor, the cable being connected to the reel on the anti-clogging device.

[0021] The beneficial effects of this system are as follows: it scientifically prevents the trash rack from becoming clogged; when a large amount of floating debris arrives, the system's purging device can be activated remotely or locally, and the purging direction of the nozzles can be adjusted to remove the debris from the water surface, thereby enhancing the trash rack's water flow capacity, alleviating the pressure caused by the large pressure difference before and after the trash rack, and providing better protection for the equipment's safety. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0023] Figure 1 This is a structural diagram of the anti-clogging device for the trash rack in a hydropower station.

[0024] Figure 2 This is a schematic diagram of the spray component structure of the anti-clogging device for the trash rack of a hydropower station.

[0025] Figure 3 A top view of the spray assembly of the anti-clogging device for the trash rack in a hydroelectric power station.

[0026] Figure 4 This is a schematic diagram of the adjustment mechanism of the anti-clogging device for the trash rack in a hydropower station.

[0027] Figure 5 This is a schematic diagram of the conical arc plate structure of the anti-clogging device for the trash rack of a hydropower station.

[0028] Figure 6 This is a schematic diagram of the back structure of the anti-clogging device for the trash rack in a hydropower station.

[0029] Figure 7 This is a schematic diagram of the internal structure of the back of the anti-clogging device for the trash rack in a hydropower station.

[0030] Figure 8 This is a partial cross-sectional view of the swing assembly of the anti-clogging device for the trash rack in a hydropower station.

[0031] Figure 9 This is a schematic diagram showing the fit between the irregularly shaped disc and the pressure rod of the anti-clogging device for the trash rack in a hydropower station.

[0032] Figure 10 This is a schematic diagram of the anti-clogging system for trash racks in a hydropower station. Detailed Implementation

[0033] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0034] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0035] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0036] Example 1

[0037] Reference Figure 1 and Figure 2 This is the first embodiment of the present invention, which provides an anti-clogging device for a trash rack in a hydropower station. The anti-clogging device includes a spraying component 100 and a swinging component 200. The spraying component 100 can blow away floating debris accumulated on the water surface upstream of the trash rack to prevent clogging. The swinging component 200 can then blow the blown-away floating debris further into a sewage gate on one side.

[0038] Specifically, the injection assembly 100 includes a nozzle 101, an adjusting member 102 disposed outside the nozzle 101, and a trigger member 103 disposed at one end of the adjusting member 102. The outer surface of the nozzle 101 is conical. The adjusting member 102 can change the orifice size of the air outlet of the nozzle 101. The trigger member 103 drives the adjusting member 102 to change the orifice size of the air outlet of the nozzle 101 when the nozzle 101 swings left and right.

[0039] Preferably, the oscillating assembly 200 includes a fixing plate 201 disposed at the nozzle 101, a transmission member 202 disposed on one side of the fixing plate 201, a frame 203 disposed outside the spray assembly 100, and an air supply pipe 204 disposed on the top of the frame 203. The fixing plate 201 serves to fix the nozzle 101 and rotates together with the nozzle 101. The transmission member 202 mainly serves to transmit motion. The frame 203 mounts the entire device on the front of the trash rack. The air supply pipe 204 is connected to an external air source.

[0040] Example 2

[0041] Reference Figures 2-9 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0042] Specifically, the adjusting component 102 includes a sliding ring 102a disposed on the nozzle 101 pipe. The sliding ring 102a slides in conjunction with the nozzle 101 pipe. A first spring 102b is disposed on one side of the sliding ring 102a, and the two ends of the first spring 102b are fixedly connected to one side of the sliding ring 102a and the nozzle 101 pipe, respectively. A push rod 102c is fixedly connected to the other side of the sliding ring 102a. A sliding groove is also disposed on one side of the sliding ring 102a. The sliding ring 102a is fitted onto the nozzle 101 pipe and can slide along the pipe. The first spring 102b is a tension spring, mainly used for the reset of the sliding ring 102a.

[0043] Preferably, the adjusting member 102 further includes a conical arc plate 102d slidably connected to the push rod 102c. The conical arc plate 102d fits against the conical outer surface of the nozzle 101. An mounting groove 102d-1 and a mounting hole 102d-2 are also provided on the inner side of the conical arc plate 102d. In this embodiment, six conical arc plates 102d are provided, each closely attached to the outer surface of the nozzle 101 and capable of sliding along the conical surface of the nozzle 101. Pushing the sliding ring 102a allows the conical arc plates 102d to slide along the conical surface of the nozzle 101.

[0044] The adjusting component 102 also includes a rubber ring 102e disposed in the mounting groove 102d-1 and an elastic rope 102f disposed in the mounting hole 102d-2. The rubber ring 102e is elastic, causing the six conical arc plates 102d to tend to converge towards the center. Therefore, as the conical arc plates 102d gradually slide downwards along the conical surface of the nozzle 101, the six conical arc plates 102d will gradually converge towards the center, thus reducing the orifice diameter of the nozzle 101. Upon retraction, the orifice diameter gradually increases again. The extreme position of the six conical arc plates 102d is when the tips of the conical arc plates 102d are completely in contact with each other. The rubber ring 102e also prevents air leakage from the gaps between the conical arc plates 102d. The elastic rope 102f, also made of an elastic material, serves to connect the conical arc plates 102d.

[0045] Preferably, the trigger 103 includes a pulley 103a disposed in a groove, a swing arm 103b rotatably engaged with the pulley 103a, and a rotating shaft 103c fixedly connected to the other end of the swing arm 103b. A first gear 103d is also disposed at both ends of the rotating shaft 103c. When the rotating shaft 103c rotates, the swing arm 103b swings accordingly. When the swing arm 103b swings towards the sliding ring 102a, the pulley 103a pushes the sliding ring 102a to move. At this time, the conical arc plate 102d gradually slides downwards along the conical surface of the nozzle 101, and the orifice diameter of the nozzle 101 becomes smaller. The pulley 103a is provided to reduce friction and make the movement smoother.

[0046] The trigger 103 also includes a pressure rod 103e that meshes with the first gear 103d. A second spring 103g is also sleeved on the outside of the pressure rod 103e. One end of the pressure rod 103e is rounded and a shaped disk 103f is also provided at its end. The end face of the shaped disk 103f is provided with an arc surface 103f-1. The end of the pressure rod 103e slides in cooperation with the arc surface 103f-1. When nozzle 101 moves horizontally to the left or right, it moves along with the fixing plate 201. The end face of the pressure rod 103e moves along the arc surface 103f-1 of the side of the irregular disc 103f. At this time, the pressure rod 103e will be gradually squeezed and move axially. The other end of the pressure rod 103e will start to push the first gear 103d to rotate. The first gear 103d will then drive the swing arm 103b to swing. The swing arm 103b will push the sliding ring 102a to move. In this way, the conical arc plate 102d will gradually slide downward along the conical surface of nozzle 101, and the orifice of nozzle 101 will become smaller. Thus, under the condition that the original air source pressure remains unchanged, the airflow ejected by nozzle 101 is more powerful and sprays farther, so that floating garbage can be brought to the sewage gate next to it. The second spring 103g is a compression spring, mainly used for reset.

[0047] Preferably, the fixing plate 201 is fixedly connected to the nozzle 101 pipe, and a turntable 201a is also provided on one side of it. The rotating shaft 103c is rotatably engaged with the turntable 201a, and the pressure rod 103e is slidably engaged with the fixing plate 201. The fixing plate 201 serves to fix and install the nozzle 101 and other components. The fixing plate 201 can rotate left and right together with the spray assembly 100 and the swing assembly 200.

[0048] The transmission component 202 includes a second gear 202a disposed at the bottom of the fixed plate 201, which is fixedly connected to the fixed plate 201. The transmission component 202 also includes a toothed plate 202b disposed on one side of the second gear 202a and meshing with it, with serrations on both sides of the toothed plate 202b. Since multiple nozzles 101 are installed in a row, a second gear 202a is installed on each fixed plate 201 to control their rotation synchronously. The second gear 202a rotates together with the fixed plate 201. When the toothed plate 202b moves, all the second gears 202a meshing with it will rotate, thus synchronously controlling the rotation angle of the nozzles 101.

[0049] The transmission component 202 also includes a motor 202c located at the other end of the gear plate 202b. The output end of the motor 202c is equipped with a third gear 202d, which meshes with the gear plate 202b. The motor 202c is a servo motor controlled by a PLC program, responsible for driving the movement of the gear plate 202b.

[0050] Preferably, the frame 203 has a reel 203a at both ends, and a motor mounting bracket 203b at the bottom. The shaped disc 103f is fixedly connected to the inside of the frame 203 via a connecting column. The toothed plate 202b slides within the frame 203, and the shaft of the second gear 202a rotates within the frame 203. The reel 203a is used to fix the winch cable, enabling vertical lifting. The shaped disc 103f is fixed integrally with the frame 203.

[0051] Furthermore, the gas supply pipe 204 includes an equalizing pipe 204a connected to the nozzle 101, and an air inlet pipe 204b connected to the equalizing pipe 204a. The air inlet pipe 204b is connected to an external gas source and distributes gas to each nozzle 101 through the equalizing pipe 204a.

[0052] Working principle: When the trash rack of a hydroelectric power station accumulates to a certain amount and needs to be purged, the external air source is turned on to supply airflow. The airflow is then directed through nozzles 101 to blow floating debris off the trash rack. To prevent the blown-off debris from accumulating back on the trash rack with the water flow, the spray angle of nozzles 101 needs to be changed to direct the debris towards the drain outlet on one side of the trash rack. Because blowing debris laterally into the drain outlet is more difficult than blowing it directly off the trash rack, requiring a longer effective spray distance, the airflow pressure needs to be appropriately increased when changing the spray angle of nozzles 101 to ensure the debris is smoothly blown into the drain outlet.

[0053] Therefore, when such an operation is required, the program controls the motor 202c to rotate, which drives the toothed plate 202b to move. The toothed plate 202b then drives the second gear 202a to rotate, and the second gear 202a drives the fixed plate 201 and the nozzle 101 to rotate to the left or right. During this process, when the fixed plate 201 swings, the end face of the pressure rod 103e moves along the arc surface 103f-1 on the side of the irregular disc 103f. At this time, the pressure rod 103e will be gradually squeezed and move axially. The other end of the pressure rod 103e will start to push the first gear 103d to rotate. The first gear 103d will then drive the swing arm 103b to swing. The swing arm 103b will push the sliding ring 102a to move. The push rod 102c on the sliding ring 102a will push the arc plate 202a to gradually slide down along the conical surface of the nozzle 101. At the same time, under the action of the rubber ring 102e, the six conical arc plates 102d will gradually move towards the center. Therefore, the orifice of the nozzle 101 will become smaller. In this way, under the condition that the original air source pressure remains unchanged, the airflow ejected by the nozzle 101 will be more powerful and fly farther, so that the floating garbage can be brought into the sewage gate next to it. This eliminates the need to manually change the pressure of the gas source, allowing for adaptive adjustment to a certain extent.

[0054] Example 3

[0055] Reference Figure 10 This is the third embodiment of the present invention. This embodiment provides a hydropower station trash rack anti-clogging system. The system includes an anti-clogging device, a pressurization unit 300 including a pressurization device 301 and an air supply device 302 connected to the pressurization device 301; and an injection unit 400 including an anti-clogging device connected to the air supply device 302 and lifting devices 401 disposed at both ends of the anti-clogging device.

[0056] Specifically, the booster equipment 301 includes a main air compressor unit 301a and a standby air compressor unit 301b. The gas transmission equipment 302 includes a high-pressure gas tank 302a connected to the booster equipment 301. On the pipeline connecting the booster equipment 301 and the high-pressure gas tank 302a, a check valve 302c at the outlet of the air compressor unit, an inspection valve 302d at the outlet of the air compressor unit, and a front valve 302e at the high-pressure gas tank are installed in sequence. On the pipeline connecting the high-pressure gas tank 302a and the equalizing pipe 204a, a high-pressure gas tank outlet valve 302f and a front valve 302g at the equalizing pipe are installed in sequence.

[0057] The main air compressor unit 301a consists of one screw compressor and one booster compressor, serving as the primary booster equipment. The standby air compressor unit 301b consists of one screw compressor and one booster compressor, serving as the backup booster equipment. The high-pressure gas tank 302a is used to store high-pressure gas. The air compressor unit outlet check valve 302c is installed to prevent gas backflow. The air compressor unit outlet maintenance valve 302d is normally fully open and fully closed during maintenance. The high-pressure gas tank outlet valve 302f is normally fully open and fully closed during gas tank maintenance. The equalizing pipe front valve 302g is normally fully open and fully closed during gas tank maintenance.

[0058] Preferably, the lifting device 401 includes a winch motor 401a installed on both sides of the trash rack of the hydropower station, and a cable 401b installed at the output end of the winch motor 401a. The cable 401b is connected to the reel 203a on the anti-clogging device. The winch motor 401a is controlled by a PLC program, and the anti-clogging device moves up and down by reversing forward and reverse.

[0059] In operation, the lifting device, consisting of two synchronous winch motors 401a, a gearbox, gear sets, and a PLC program unit, is designed and manufactured to prevent clogging of the trash rack based on its dimensions, dead water level, and maximum water level. The device is installed in front of the trash rack. The two synchronous winch motors 401a, along with the rails and gear sets installed on both sides of the trash rack, form the drive unit. A water level sensor automatically controls the lifting and lowering of the winch motors 401a based on changes in the reservoir water level, keeping the anti-clogging device always on the water surface. The PLC system can control the device remotely or locally. High-pressure air passes through two sets of adjustable nozzles 101, ensuring the airflow direction is at a certain angle to the water flow, blowing floating debris towards the discharge gate and preventing it from accumulating in front of the trash rack. Two air compressors serve as backups for each other and can be started individually or simultaneously for air replenishment. The PLC controls the start and stop of the air compressors based on the air tank pressure, ensuring a long-term, stable air supply pressure.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A device for preventing blockage of trash racks in hydropower stations, characterized in that: include, The injection assembly (100) includes a nozzle (101), an adjusting member (102) disposed outside the nozzle (101), and a trigger member (103) disposed at one end of the adjusting member (102); and, The swing assembly (200) includes a fixed plate (201) disposed at the nozzle (101), a transmission member (202) disposed on one side of the fixed plate (201), a frame (203) disposed outside the injection assembly (100), and an air supply pipe (204) disposed on the top of the frame (203). The adjusting component (102) includes a sliding ring (102a) disposed on the nozzle (101) pipe, the sliding ring (102a) slidingly engaging with the nozzle (101) pipe, a first spring (102b) disposed on one side of the sliding ring (102a), the two ends of the first spring (102b) being fixedly connected to one side of the sliding ring (102a) and the nozzle (101) pipe respectively, a push rod (102c) being fixedly connected to the other side of the sliding ring (102a), and a sliding groove being disposed on one side of the sliding ring (102a); The adjusting component (102) also includes a conical arc plate (102d) that is slidably connected to the push rod (102c). The conical arc plate (102d) is in contact with the conical outer surface of the nozzle (101). An installation groove (102d-1) and an installation hole (102d-2) are also provided on the inner side of the conical arc plate (102d). The adjusting member (102) also includes a rubber ring (102e) disposed in the mounting groove (102d-1) and an elastic rope (102f) disposed in the mounting hole (102d-2). The trigger (103) includes a pulley (103a) disposed in a groove, a swing arm (103b) rotatably engaged with the pulley (103a), and a rotating shaft (103c) fixedly connected to the other end of the swing arm (103b). A first gear (103d) is also disposed at both ends of the rotating shaft (103c). The trigger (103) also includes a pressure rod (103e) that meshes with the first gear (103d). A second spring (103g) is also sleeved on the outside of the pressure rod (103e). One end of the pressure rod (103e) is rounded and a shaped disk (103f) is also provided at its end. The end face of the shaped disk (103f) is provided with an arc surface (103f-1). The end of the pressure rod (103e) slides in cooperation with the arc surface (103f-1). The fixed plate (201) is fixedly connected to the nozzle (101) pipe, and a turntable (201a) is also provided on one side of it. The rotating shaft (103c) is rotatably engaged with the turntable (201a), and the pressure rod (103e) is slidably engaged with the fixed plate (201). The transmission component (202) includes a second gear (202a) disposed at the bottom of the fixed plate (201), the second gear (202a) being fixedly connected to the fixed plate (201), and the transmission component (202) further includes a toothed plate (202b) disposed on one side of the second gear (202a) and meshing with it, and both sides of the toothed plate (202b) are provided with serrations; The transmission component (202) also includes a motor (202c) disposed at the other end of the toothed plate (202b), and the output end of the motor (202c) is provided with a third gear (202d), which meshes with the toothed plate (202b).

2. The anti-clogging device for a trash rack in a hydropower station as described in claim 1, characterized in that: The frame (203) is provided with a scroll (203a) at both ends, and a motor fixing bracket (203b) is provided at the bottom of the frame (203). The irregular disk (103f) is fixedly connected to the inside of the frame (203) through a connecting column. The toothed plate (202b) is slidably engaged with the inside of the frame (203), and the shaft of the second gear (202a) is rotatably engaged with the inside of the frame (203).

3. The anti-clogging device for a trash rack in a hydropower station as described in claim 2, characterized in that: The gas delivery pipe (204) includes an equalizing pipe (204a) connected to the nozzle (101) and an inlet pipe (204b) connected to the equalizing pipe (204a).

4. A system for preventing blockage of trash racks in hydropower stations, characterized in that: Including the anti-clogging device as described in any one of claims 1 to 3, further comprising: The pressurization unit (300) includes a pressurization device (301) and a gas delivery device (302) connected to the pressurization device (301); and, The injection unit (400) includes an anti-clogging device connected to the gas delivery equipment (302) and lifting devices (401) disposed at both ends of the anti-clogging device.

5. The anti-clogging system for trash racks in hydropower stations as described in claim 4, characterized in that: The booster equipment (301) includes a main air compressor unit (301a) and a standby air compressor unit (301b). The gas transmission equipment (302) includes a high-pressure gas tank (302a) connected to the booster equipment (301). On the pipeline connecting the booster equipment (301) and the high-pressure gas tank (302a), an air compressor unit outlet check valve (302c), an air compressor unit outlet maintenance valve (302d), and a high-pressure gas tank front valve (302e) are sequentially provided. On the pipeline connecting the high-pressure gas tank (302a) and the equalizing pipe (204a), a high-pressure gas tank outlet valve (302f) and an equalizing pipe front valve (302g) are sequentially provided.

6. The anti-clogging system for trash racks in hydropower stations as described in claim 5, characterized in that: The lifting device (401) includes a winch motor (401a) installed on both sides of the trash rack of the hydropower station, and a cable (401b) installed at the output end of the winch motor (401a). The cable (401b) is connected to the reel (203a) on the anti-clogging device.

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