A dirt filtration device for a pumped storage power station

Abstract

The present invention belongs to the technical field of pumped storage power stations, and in particular relates to a dirt filtering device for a pumped storage power station, which includes a water inlet trough. One side of the outer end of the water inlet trough is provided with a controller. A swing grille is movably connected between the inner side walls on both sides of the water inlet trough. A horizontal shaft is arranged at the top of the swing grille. Both sides of the horizontal shaft are rotatably connected to the inner wall of the water inlet trough through bearings. An elastic collection frame is slidably connected to the inner bottom of the water inlet trough. A plurality of deformation water permeable holes are formed inside the elastic collection frame. A spray pipe is rotatably connected between the inner side walls on both sides of the water inlet trough and on the side of the swing grille away from the elastic collection frame. The installation efficiency of the present invention is high, the regulation performance is strong, the filtering and impurity removal effect on the water flow in the water inlet trough is stable. At the same time, various components cooperate with each other, the operation is simple and the versatility is strong. Among them, the water pressure has different effects in different working processes, with high stability, strong adaptability, energy saving and emission reduction, and environmental protection.

Description

Technical Field

[0001] The present invention belongs to the technical field of pumped - storage power stations, and particularly relates to a dirt filtering device for a pumped - storage power station. Background Art

[0002] Pumped - storage power stations are generated to solve the contradiction between supply and demand during peak and valley periods of the power grid. It is an indirect way to store electrical energy. It uses the excess power in the second half of the night to drive a water pump to pump water from the lower reservoir to the upper reservoir for storage. Then, during the day and the first half of the night of the next day, the water is released for power generation and flows into the lower reservoir. During the whole operation process, although some energy will be lost during conversion, compared with building additional coal - fired power generation equipment to meet peak electricity demand and load shedding or shutting down during valleys, using a pumped - storage power station is still cheaper and more efficient. A pumped - storage power station has two main operating modes: power generation and pumping, and there are also multiple operations to transfer from one operating condition to another between the two operating modes. way 。

[0003] The main components of a pumped - storage power station mainly include: an upper reservoir, a water conveyance system, a power house, a switchyard and an outgoing line yard, and a lower reservoir. Since the upper reservoir and the lower reservoir are in a natural environment, there are often sundries such as branches, leaves, and garbage floating in the reservoirs. If a filtering device is not set up, these sundries will block the water pump or pipeline, causing unnecessary losses to the hydropower station. Most of the existing dirt filtering devices are set below the water surface, and it is more troublesome to clean the dirt by the filtering device, resulting in the dirt being easy to block the pipeline.

[0004] At the same time, when filtering the water flow in the water diversion trough, sediment such as sand and gravel contained in the water flow will continuously deposit at the bottom of the water diversion trough, thereby causing the water level of the water flow in the water diversion trough to rise. There is not only a risk of overflowing the dike, but also the cleaning difficulty of sand, gravel, etc. will continuously increase after long - term static settlement.

[0005] in addition When filtering the impurities remaining at the bottom of the water diversion trough, problems such as blockage of internal filter holes will occur, thereby increasing the cleaning difficulty and reducing the filtering and cleaning effect on the sedimented impurities in the water diversion trough. Summary of the Invention

[0006] The purpose of the present invention is to provide a dirt filtering device for a pumped - storage power station in view of the above problems.

[0007] To achieve the above object, the present invention adopts the following technical solutions: A dirt filtering device for a pumped storage power station, including a water inlet trough, on one side of the outer end of the water inlet trough there is a controller, between the inner side walls on both sides of the water inlet trough there is a swing grille movably connected, on the top of the swing grille there is a horizontal shaft, both sides of the horizontal shaft are rotatably connected to the inner wall of the water inlet trough through bearings, at the inner bottom of the water inlet trough there is an elastic collection frame slidably connected, and there are a plurality of deformation water-permeable holes opened inside the elastic collection frame;

[0008] Between the inner side walls on both sides of the water inlet trough and on the side of the swing grille away from the elastic collection frame there is a spray pipe rotatably connected, on the spray pipe there are a plurality of nozzles for flushing the swing grille, at the outer end of the nozzle there is a pressure sensor, on the inner side wall of the water inlet trough there is a cross plate, at one end of the cross plate close to the swing grille there is an elastic damping rod, and the other end of the elastic damping rod abuts against the side wall of the swing grille;

[0009] On the water inlet trough there is a water inlet assembly connected to the spray pipe, at the bottom of the water inlet trough there is a water inlet channel, and above the water inlet channel on the water inlet trough there is a filter frame.

[0010] Further, on both top walls on both sides of the elastic collection frame there are two connecting blocks, on the top of the four connecting blocks there are ropes, at the top ends of the four ropes there is the same pull rope, on the water inlet trough there is a support frame, on the side wall of the support frame there is a driving assembly for driving the pull rope to move up and down, on one side of the elastic collection frame there is a baffle rotatably connected, and on the top of the elastic collection frame there is a fixing assembly for fixing the baffle.

[0011] Further, the controller electrically controls each electrical component, at the inlet of the water inlet trough there is a gate, and at the bottom of the support frame there is a sling for driving the gate to move up and down.

[0012] Further, the driving assembly includes a support plate, a rotating shaft, a winding roller and a first motor. There are two support plates, both support plates are fixedly connected to the side wall of the support frame, the rotating shaft is rotatably connected between the two support plates, the winding roller is fixedly arranged on the rotating shaft, one end of the pull rope is fixedly connected to the winding roller, the first motor is fixedly installed on the side wall of the support plate, and the output end of the first motor is fixedly connected to the rotating shaft.

[0013] Further, the fixing assembly includes a plug rod, a top block and a spring. The plug rod penetrates through the elastic collection frame, on the baffle there is a jack adapted to the plug rod, the bottom end of the plug rod extends into the jack, the top block is fixedly connected to the top end of the plug rod, the spring is sleeved on the plug rod, and the spring is fixedly connected to the top block and the elastic collection frame respectively.

[0014] Furthermore, the swinging grille includes multiple groups of mutually perpendicular transverse railings and vertical railings, filter holes are formed between the transverse railings and the vertical railings, multiple groups of nozzles are facing the transverse railings of the swinging grille when not working, multiple groups of nozzles and the vertical railings are staggered and distributed with each other, the swinging grille matches the inner wall of the water diversion trough, and an elastic block is provided at the bottom of the swinging grille, and the elastic block matches the inner bottom of the water diversion trough and is sealed and slidably connected.

[0015] Furthermore, the water inlet assembly includes a water pump, a water inlet pipe and a connecting pipe. The water pump is fixedly arranged on the top of the water diversion trough, the water inlet pipe is fixedly connected to the water inlet end of the water pump, the connecting pipe is fixedly connected to the output end of the water pump, the bottom end of the connecting pipe is fixedly connected to the nozzle and the connecting pipe is a hose.

[0016] Furthermore, a fixed plate is provided on the water diversion trough, a second motor is fixedly mounted on the side wall of the fixed plate, a rotating rod is rotatably connected to the fixed plate, an output end of the second motor is fixedly connected to the rotating rod, a first pulley is provided on the rotating rod, a second pulley is provided on the nozzle, and the first pulley and the second pulley are connected by a belt.

[0017] Furthermore, a mounting groove is provided on the side wall of the water diversion trough, the filter frame is arranged in the mounting groove, a filter screen is provided in the filter frame, a mounting plate is provided on the side wall of the filter frame, the mounting plate is fixedly connected to the outer side wall of the water diversion trough by bolts, and a sealing gasket is provided on the side wall of the filter frame for sealing the gap between the filter frame and the mounting groove.

[0018] Furthermore, the elastic direction of the elastic collection frame is horizontal and in the same direction as the water flow direction in the water diversion trough, that is, the elastic direction of the elastic collection frame is along the gate to the swing grille end, the elastic coefficient of the elastic damping rod is greater than the elastic coefficient of the elastic collection frame, and the end of the elastic collection frame close to the swing grille is provided with a flexible block

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] 1. The present invention sets a swinging grille, etc. The swinging grille filters dirt such as leaves and garbage in the water flow. The filtered dirt such as leaves and garbage are collected in an elastic collection frame, and then some smaller impurities such as sand and gravel are filtered through a filter. The filtered impurities are collected in the filter frame for easy cleaning. The present invention sprays tap water through multiple nozzles to flush the swinging grille and clean the dirt residue attached to the swinging grille. The swinging grille is fully cleaned by rotating the nozzle upward or downward by a certain angle.

[0021] 2. The present invention is provided with a first motor and a second motor. The draw rope is wound by a winding roller, and the draw rope drives four ropes and an elastic collection frame to move upward, so that the elastic collection frame is moved out of the water diversion trough. By pulling the top block upward, the insertion rod is driven to leave the insertion hole, and the baffle is rotated to open the baffle, facilitating the removal of the dirt in the elastic collection frame. By removing the bolts, the filter frame can be taken out, and then the filter in the filter frame can be cleaned. The cleaning is convenient and the cleaning effect is good.

[0022] 3. The present invention is provided with a spray head, a swing grille and an elastic collection frame, with high installation efficiency, strong controllability, stable filtering and impurity removal effect on the water flow in the water diversion trough. At the same time, the components cooperate with each other, the operation is simple and the versatility is strong. Among them, the water pressure has different effects in different working processes, with high stability, strong adaptability, thorough and efficient filtering and impurity removal, energy conservation and emission reduction, and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the whole of the present invention;

[0024] Figure 2 is a schematic structural diagram of another perspective of the whole of the present invention;

[0025] Figure 3 is a schematic structural diagram of the elastic collection frame of the present invention;

[0026] Figure 4 is Figure 3 an enlarged structural diagram of part A in

[0027] Figure 5 is Figure 2 an enlarged structural diagram of part B in

[0028] Figure 6 is a schematic structural diagram of the filter frame of the present invention;

[0029] Figure 7 is a front sectional view schematic diagram of the second embodiment of the present invention.

[0030] In the figure, 1, water diversion trough; 2, swing grille; 3, elastic collection frame; 4, connection block; 5, rope; 6, draw rope; 7, support frame; 8, support plate; 9, rotating shaft; 10, winding roller; 11, first motor; 12, baffle; 13, insertion rod; 14, top block; 15, spring; 16, spray pipe; 17, spray head; 18, water pump; 19, water inlet pipe; 20, connecting pipe; 21, water inlet channel; 22, filter frame; 23, filter screen; 24, gate; 25, deformed water permeable hole; 26, fixing plate; 27, second motor; 28, rotating rod; 29, first pulley; 30, second pulley; 31, mounting plate; 32, sealing gasket; 33, cross plate; 34, elastic damping rod; 35, horizontal shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0032] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0033] First Embodiment

[0034] As Figures 1 - 6 shown, a dirt filtering device for a pumped-storage power station includes a water inlet channel 1. One side of the outer end of the water inlet channel 1 is provided with a controller, which electrically controls each electrical component. A gate 24 is provided at the inlet of the water inlet channel 1, and the gate 24 is driven to open by a sling, thereby introducing reservoir water into the water inlet channel 1.

[0035] A swing grille 2 is movably connected between the inner side walls on both sides of the water inlet channel 1. The swing grille 2 filters dirt such as leaves and garbage in the water flow. An elastic collection box 3 is provided at the inner bottom of the water inlet channel 1 between the swing grille 2 and the gate 24. The filtered dirt is intercepted between the swing grille 2 and the gate 24. When the device is not in use, the gate 24 is closed, and the water in the water inlet channel 1 will flow out, and then the filtered dirt will be collected in the elastic collection box 3.

[0036] Two connecting blocks 4 are provided on the top walls on both sides of the elastic collection box 3. Four ropes 5 are provided at the tops of the four connecting blocks 4. The tops of the four ropes 5 are provided with the same pulling rope 6. A support frame 7 is provided on the water inlet channel 1. A sling for driving the gate 24 to move up and down is provided at the bottom of the support frame 7. A driving component for driving the pulling rope 6 to move up and down is provided on the side wall of the support frame 7. Then, the driving component drives the pulling rope 6 to move. When the pulling rope 6 moves, the elastic collection box 3 is driven to move up and down in the water inlet channel 1 through the ropes 5 and the connecting blocks 4 at the bottom, and finally the elastic collection box 3 is recovered from the water inlet channel 1 and it is convenient to clean the elastic collection box 3, improving the recyclability and cleanliness of the sundries inside the water inlet channel 1.

[0037] The driving assembly includes a support plate 8, a rotating shaft 9, a winding roller 10 and a first motor 11. There are two support plates 8, and both of the two support plates 8 are fixedly connected to the side wall of the support frame 7. The rotating shaft 9 is rotatably connected between the two support plates 8. The winding roller 10 is fixedly arranged on the rotating shaft 9. One end of the pulling rope 6 is fixedly connected to the winding roller 10. The first motor 11 is fixedly installed on the side wall of the support plate 8, and the output end of the first motor 11 is fixedly connected to the rotating shaft 9. The first motor 11 drives the rotating shaft 9 to rotate, the rotating shaft 9 drives the winding roller 10 to rotate, the pulling rope 6 is wound by the winding roller 10, and the pulling rope 6 drives the four ropes 5 and the elastic collection frame 3 to move upward, so that the elastic collection frame 3 is moved out of the water diversion trough 1, thereby facilitating the cleaning of the dirt in the elastic collection frame 3.

[0038] A plurality of deformation water-permeable holes 25 are formed in the bottom wall of the elastic collection frame 3, and the residual water in the elastic collection frame 3 is discharged through the plurality of deformation water-permeable holes 25.

[0039] A baffle 12 is rotatably connected to one side of the elastic collection frame 3. By rotating the baffle 12 to open the baffle 12, it is convenient to take out the dirt in the elastic collection frame 3.

[0040] A fixing assembly for fixing the baffle 12 is arranged at the top of the elastic collection frame 3. The fixing assembly includes a plug rod 13, a top block 14 and a spring 15. The plug rod 13 is arranged through the elastic collection frame 3. A jack adapted to the plug rod 13 is formed on the baffle 12. The bottom end of the plug rod 13 extends into the jack. By inserting the plug rod 13 into the jack, the baffle 12 is fixed. The top block 14 is fixedly connected to the top end of the plug rod 13. The spring 15 is sleeved outside the plug rod 13, and the spring 15 is fixedly connected to the top block 14 and the elastic collection frame 3 respectively. Through the restoring force of the spring 15, the plug rod 13 is stabilized in the jack. By pulling the top block 14 upward, the plug rod 13 is driven to leave the jack, and thus the fixing effect on the baffle 12 can be released.

[0041] A spray pipe 16 is rotatably connected between the inner side walls of both sides of the water diversion trough 1 on the side of the swing grille 2 away from the elastic collection frame 3. Both ends of the spray pipe 16 are closed. A plurality of spray heads 17 for flushing the swing grille 2 are arranged on the spray pipe 16. An inlet water assembly connected to the spray pipe 16 is arranged on the water diversion trough 1. Water is sent into the spray pipe 16 through the inlet water assembly, and the water in the spray pipe 16 is sprayed out along the spray heads 17 to clean the swing grille 2.

[0042] The water inlet assembly includes a water pump 18, a water inlet pipe 19, and a connecting pipe 20. The water pump 18 is fixedly arranged on the top of the water diversion trough 1. The water inlet pipe 19 is fixedly connected to the water inlet end of the water pump 18. The water inlet pipe 19 is connected to an external water pipe to access tap water. The connecting pipe 20 is fixedly connected to the output end of the water pump 18. The bottom end of the connecting pipe 20 is fixedly connected to the spray pipe 16, and the connecting pipe 20 is a flexible pipe. The water pump 18 accesses tap water through the water inlet pipe 19 and inputs it into the connecting pipe 20, and then inputs it into the spray pipe 16 through the connecting pipe 20 and sprays it out through a plurality of nozzles 17 to wash the swing grille 2, facilitating the cleaning of the dirt residues attached to the swing grille 2.

[0043] A fixed plate 26 is provided on the water diversion trough 1. A second motor 27 is fixedly installed on the side wall of the fixed plate 26. A rotating rod 28 is rotatably connected to the fixed plate 26. The output end of the second motor 27 is fixedly connected to the rotating rod 28. A first pulley 29 is provided on the rotating rod 28. A second pulley 30 is provided on the spray pipe 16. The first pulley 29 and the second pulley 30 are connected by a belt. The second motor 27 drives the rotating rod 28 to rotate. The rotating rod 28 drives the first pulley 29 to rotate. The first pulley 29 drives the second pulley 30 and the spray pipe 16 to rotate through the belt, so that the spray pipe 16 rotates upward or downward by a certain angle, thereby comprehensively cleaning the swing grille 2.

[0044] A water inlet channel 21 is provided at the bottom of the water diversion trough 1. The water in the water diversion trough 1 flows into the water inlet channel 21 and then flows into the power station pumping equipment through the water inlet channel 21. A filter frame 22 is provided above the water inlet channel 21 in the water diversion trough 1. A filter screen 23 is provided in the filter frame 22 to filter some smaller impurities, such as sand and gravel.

[0045] An installation groove is formed on the side wall of the water diversion trough 1. The filter frame 22 is arranged in the installation groove. An installation plate 31 is provided on the side wall of the filter frame 22. The installation plate 31 is fixedly connected to the outer side wall of the water diversion trough 1 through bolts. By removing the filter frame 22, the filter in the filter frame 22 can be cleaned. A sealing gasket 32 for sealing the gap between the filter frame 22 and the installation groove is provided on the side wall of the filter frame 22.

[0046] During use, the reservoir water is introduced into the water diversion trough 1. The swing grille 2 filters dirt such as leaves and garbage in the water flow. Then, some smaller impurities, such as sand and gravel, are filtered through the filter screen 23. Finally, the reservoir water flows into the water inlet channel 21 and then into the power station pumping equipment through the water inlet channel 21.

[0047] When the device is not in use, close the gate 24. The water in the water diversion tank 1 will flow out completely, and the filtered dirt will be collected in the elastic collection frame 3. The water pump 18 accesses tap water through the water inlet pipe 19 and inputs it into the connecting pipe 20. It is then input into the spray pipe 16 through the connecting pipe 20 and sprayed out through multiple nozzles 17 to wash the swing grille 2, thereby cleaning the dirt residues attached to the swing grille 2. The dirt cleaned off falls into the elastic collection frame 3. The second motor 27 drives the rotating rod 28 to rotate, the rotating rod 28 drives the first pulley 29 to rotate, and the first pulley 29 drives the second pulley 30 and the spray pipe 16 to rotate through the belt, so that the spray pipe 16 rotates upward or downward by a certain angle, thereby comprehensively cleaning the swing grille 2.

[0048] The first motor 11 drives the rotating shaft 9 to rotate, the rotating shaft 9 drives the winding roller 10 to rotate, the pull rope 6 is wound by the winding roller 10, and the pull rope 6 drives the four ropes 5 and the elastic collection frame 3 to move upward, so that the elastic collection frame 3 is moved out of the water diversion tank 1. By pulling the top block 14 upward, the insertion rod 13 is driven to leave the jack, and the baffle 12 is rotated to open the baffle 12, facilitating the removal of the dirt in the elastic collection frame 3. The bolts are disassembled and the filter frame 22 is taken out, thereby cleaning the filter in the filter frame 22.

[0049] This device has good cleaning effect and high cleaning efficiency. It uses the nozzles 17 to perform all-round and dead-angle-free reverse cleaning on the swing grille 2. The cleaning is stable and highly controllable. At the same time, after use, the elastic collection frame 3 is lifted along the water diversion tank 1 for thorough and effective cleaning, with high recovery efficiency and reduced cleaning and collection difficulty.

[0050] Second Embodiment

[0051] As Figure 7 shown, as can be seen from the first embodiment, when the swing grille 2 is used for a long time to filter and remove impurities from the water in the water diversion tank 1, due to the continuous impact of the water flow, the impurities in the water diversion tank 1 will continuously accumulate at the bottom of the swing grille 2, which will not only reduce the impurity removal effect of the swing grille 2, but also cause sediment in the water diversion tank 1, thereby raising the water level. And when the elastic collection frame 3 is used for a long time to filter and recycle the impurities in the water diversion tank 1, the deformation water-permeable holes 25 inside the elastic collection frame 3 will become blocked, thereby reducing its filter and impurity removal effect. To solve the above problems, this pumped-storage power station dirt filtration device further includes ： A horizontal shaft 35 is provided at the top of the swing grille 2. The two sides of the horizontal shaft 35 are rotatably connected to the inner wall of the water diversion tank 1 through bearings. Therefore, the swing process of the swing grille 2 inside the water diversion tank 1 is realized by means of the horizontal shaft 35. Specifically, the water flow in the water diversion tank 1 will drive the internal impurities to gather at the end of the swing grille 2, and at the same time, filter through the swing grille 2. And the filtered impurities, especially gravel and sediment, will continuously ground accumulate downward at the bottom of the swing grille 2, thereby causing the bottom of the swing grille 2 to swing and tilt.

[0052] A pressure sensor is provided at the outer end of the spray head 17. Therefore, when the swing grille 2 rotates towards the spray head 17 end under the extrusion of water flow and impurities, especially when the bottom of the swing grille 2 contacts the spray head 17, the pressure value detected by the pressure sensor continuously increases. When the pressure value detected by the pressure sensor is greater than the set pressure preset value, the controller controls the water pump 18 to start. After the water pump 18 starts to pump water from the water inlet pipe 19, it drains water into the connecting pipe 20. The water in the connecting pipe 20 is sprayed out along the spray pipe 16 and the spray head 17, and the water pressure sprayed out by the spray head 17 exerts a reverse force on the bottom of the swing grille 2, thereby causing the swing grille 2 to swing in the reverse direction and return to its original position. Through this process, the swing grille 2 can swing in the water flow of the water diversion trough 1, so as to vibrate and filter the impurities clamped at the end and inside, improve the impurity removal performance of the swing grille 2, and exert a swinging force on the water flow inside the water diversion trough 1 by means of the swing of the swing grille 2, so as to vibrate and roll the sediment, gravel, etc. deposited at one end of the bottom of the swing grille 2, and improve its disturbance and filtration performance.

[0053] A cross plate 33 is provided on the inner side wall of the water diversion trough 1. The cross plate 33 contacts the bottom of the spray head 17, and at the same time, the bottom of the cross plate 33 is fixedly connected to the inner bottom of the water diversion trough 1. An elastic damping rod 34 is provided at one end of the cross plate 33 close to the swing grille 2, and the other end of the elastic damping rod 34 abuts against the side wall of the swing grille 2. Therefore, when the swing grille 2 swings, it will squeeze the elastic damping rod 34 to move. Especially, the elastic coefficient of the elastic damping rod 34 is greater than the elastic coefficient of the elastic collection frame 3. Therefore, in the initial case, that is, when there is no water flow inside the water diversion trough 1, the swing grille 2 is in a vertical state by means of the elastic force of the elastic damping rod 34.

[0054] The elastic direction of the elastic collection frame 3 is horizontal and the same as the water flow direction, that is, the elastic direction of the elastic collection frame 3 is from the gate 24 to the swing grille 2 end. The end of the elastic collection frame 3 close to the swing grille 2 is a flexible block. Therefore, when the bottom of the swing grille 2 rotates towards the spray head 17 end, the transverse dimension of the elastic collection frame 3 synchronously increases by means of the elastic force of the elastic collection frame 3 itself, so as to always ensure that the end of the elastic collection frame 3 contacts the bottom of the swing grille 2, and ensure the stability and sealing performance of the device.

[0055] The swinging grille 2 includes a plurality of groups of mutually perpendicular transverse railings and vertical railings, and filter holes are formed between the transverse railings and the vertical railings, by means of which the water flow in the water diversion trough 1 is filtered and impurities are removed. When the plurality of groups of nozzles 17 are not working, they are directly facing the transverse railings of the swinging grille 2. The plurality of groups of nozzles 17 and the vertical railings are staggered with each other. Therefore, when the nozzles 17 spray water to the swinging grille 2, the water pressure is directly facing the swinging grille 2 and causes the swinging grille 2 to rotate in the opposite direction to return to its original position. The swinging grille 2 matches the inner wall of the water diversion trough 1, and an elastic block is provided at the bottom of the swinging grille 2. The elastic block matches the inner bottom of the water diversion trough 1 and is sealed and slidably connected. With the help of the elastic block, when the swinging grille 2 swings inside the water diversion trough 1, the bottom of the swinging grille 2 is always in sealed and sliding contact with the inner bottom of the water diversion trough 1, thereby ensuring the sealing and swing filtering properties of the swinging grille 2.

[0056] When in use, the device is installed as described in the first embodiment, and the swing grille 2 is in a vertical state under the elastic force of the elastic damping rod 34 and the elastic collecting frame 3 itself. Then, the gate 24 is opened, and water is poured into the water diversion trough 1. The water flows through the water diversion trough 1 to reach the outer end of the swing grille 2. However, since the flow rate of the water in the water diversion trough 1 is different at different heights, the impact force of the water flow on the swing grille 2 causes the bottom of the swing grille 2 to rotate to a certain angle toward the end close to the nozzle 17. However, there is still a certain distance between the swing grille 2 and the nozzle 17, and the swing grille 2 and the nozzle 17 are not in contact.

[0057] By virtue of the inclined placement of the swinging grate 2, the swinging grate 2 filters and removes the mud, sand and gravel in the water flow, and the mud, sand and gravel at the end of the swinging grate 2 are continuously gathered to the bottom under the impact of the water flow, and finally gathered at the bottom of the swinging grate 2 on the side away from the nozzle 17 end. As the water inside the water diversion trough 1 continues to flow, the amount of mud and gravel gathered at the bottom of the swinging grate 2 continues to increase. At the same time, under the impact of the water flow, the swinging grate 2 is squeezed to continuously rotate around the horizontal axis 35 toward the nozzle 17 end. At the same time, the elastic damping rod 34 is squeezed when the swinging grate 2 rotates. With the elastic force of the elastic collecting frame 3, the lateral length of the elastic collecting frame 3 is continuously increased, and it is ensured that the end of the elastic collecting frame 3 is always in contact with the side wall of the swinging grate 2.

[0058] When the swing angle of the swing grille 2 continuously increases, the distance between the end of the swing grille 2 and the end of the nozzle 17 continuously decreases. When the swing grille 2 contacts the nozzle 17, the pressure value detected by the pressure sensor increases. When the pressure value detected by the pressure sensor is greater than the set pressure preset value, the controller controls the water pump 18 to start. The water pump 18 pumps water from the water inlet pipe 19 and drains it into the connecting pipe 20, and drains water into the spray pipe 16 and the end of the nozzle 17 through the connecting pipe 20. Then, the water pressure ejected from the nozzle 17 exerts a reverse acting force on the back of the swing grille 2. Under this reverse acting force, the swing grille 2 rotates away from the end of the nozzle 17. At this time, the swing grille 2 returns to its original position under the working action of the water flow in the water diversion trough 1 and the water pressure ejected from the nozzle 17. The swing grille 2 vibrates during this process. By means of this vibration, not only can impurities and the like clamped in the filter holes of the swing grille 2 be filtered and screened, but also a vibrating action can be exerted on the sediment, gravel, etc. deposited at the bottom of the swing grille 2, so that they roll over with the swing of the swing grille 2, avoiding their long-term accumulation and blockage, and ultimately causing the water level in the water diversion trough 1 to rise.

[0059] When the nozzle 17 finishes spraying water, the controller turns off the water pump 18, and the swing grille 2 is separated from the nozzle 17. The pressure value detected by the pressure sensor returns to the initial value. The swing grille 2 returns to the vertical under the action of the water pressure ejected from the nozzle 17. During this process, the swing grille 2 squeezes the elastic collection frame 3 and makes the transverse dimension of the elastic collection frame 3 decrease. Then, when the elastic collection frame 3 is squeezed, the size of the deformed water permeable hole 25 decreases synchronously. When the size of the deformed water permeable hole 25 decreases, the residual water pressure inside is discharged upward, thereby exerting a vertical acting force on the water flow in the water diversion trough 1, further improving the vibration and fluidity of the water flow. Then, under the action of the water flow in the water diversion trough 1, the swing grille 2 continues the above process, thereby improving the filtering performance of the swing grille 2 for the water flow, and avoiding the accumulation of sand and impurities in the water flow, effectively improving the filtering performance and stability of the device.

[0060] When the water flow in the water diversion trough 1 is drained, the gate 24 is closed. At this time, it is necessary to clean the swing grille 2. Then the controller controls the water pump 18 to start. The water pump 18 pumps water from the water inlet pipe 19 and drains it into the connecting pipe 20. The water in the connecting pipe 20 is ejected along the spray pipe 16 and the nozzle 17 to clean the swing grille 2. At the same time, the controller controls the second motor 27 to start. The second motor 27 drives the first pulley 29 to rotate through the rotating rod 28. The first pulley 29 drives the second pulley 30 to rotate through the belt. When the second pulley 30 rotates, it drives the spray pipe 16 to rotate. When the spray pipe 16 rotates, it drives the nozzle 17 to continuously rotate in the water diversion trough 1 to wash and clean the swing grille 2 with water pressure, so that the impurities and the like clamped in the filter holes of the swing grille 2 are discharged by the reverse water pressure impact and fall to the top of the elastic collection frame 3.

[0061] In particular, when water flows in the water inlet trough 1 to impact the front of the swing grille 2, the front of the swing grille 2 is impacted by the water flow. Therefore, when the nozzle 17 sprays water pressure and impacts the back of the swing grille 2, both sides of the swing grille 2 are impacted by different water pressures and maintain a relatively balanced and vertical state.

[0062] At the same time, since the position of the nozzle 17 is staggered with the vertical railing inside the swing grille 2, and the nozzle 17 rotates with the rotation of the nozzle 16, when the nozzle 17 is vertically opposite to the back of the swing grille 2, the water pressure sprayed by the nozzle 17 exerts the greatest force on the back of the swing grille 2, and the swing grille 2 rotates away from the nozzle 17 under the action of the water pressure on the back. When the swing grille 2 swings, it continuously squeezes the elastic collecting frame 3 so that the compression value of the elastic collecting frame 3 reaches the maximum value, and the size of the deformable water-permeable hole 25 inside the elastic collecting frame 3 shrinks, thereby squeezing and discharging impurities stuck in the deformable water-permeable hole 25 upward, thereby preventing them from being stuck in the deformable water-permeable hole 25 for a long time and reducing the filtering and impurity removal effect.

[0063] As the nozzle 17 continues to rotate upward, the distance between the nozzle 17 and the swing grille 2 continues to increase. Therefore, the force exerted on the back of the swing grille 2 by the same water pressure sprayed by the nozzle 17 continues to decrease, and the bottom of the swing grille 2 is driven to rotate toward the end close to the nozzle 17 under the elastic force of the elastic collecting frame 3 itself. In particular, when the nozzle 17 is facing the filter holes inside the swing grille 2, the impurities stuck in the filter holes are impacted by the water pressure, and then the impurities fall back to the top of the elastic collecting frame 3 for subsequent filtering and cleaning, and the force exerted on the back of the swing grille 2 by the water pressure sprayed by the nozzle 17 suddenly decreases to zero, then the bottom of the swing grille 2 is driven to rotate toward the end close to the nozzle 17 under the elastic force of the elastic collecting frame 3, and when the nozzle 17 continues to rotate, it continues to face the horizontal railing in the swing grille 2 and applies water pressure, then the trend of the swing grille 2 rotating toward the end close to the nozzle 17 stops.

[0064] When the nozzle 17 rotates upward to the maximum value, the controller controls the second motor 27 to rotate in the opposite direction, and the nozzle 17 rotates in the opposite direction downward, so that the water pressure applied by the nozzle 17 to the back of the swing grille 2 continues to increase, and the bottom of the swing grille 2 continues to rotate away from the nozzle 17 and squeeze the elastic collecting frame 3, so that the impurities stuck in the deformable water-permeable holes 25 inside the elastic collecting frame 3 are continuously discharged upward, thereby improving the impurity removal and filtering effect of the deformable water-permeable holes 25.

[0065] Therefore, during the continuous rotation of the nozzle 17, not only can the impurities and the like clamped inside the swing grille 2 be cleaned by water pressure, but also the swing grille 2 can be vibrated inside the water diversion trough 1 in cooperation with the elastic collection frame 3, so as to vibrate and filter the impurities clamped inside the swing grille 2 and the sediment, gravel, etc. attached to the side of the swing grille 2 far from the nozzle 17, effectively improving the cleaning and filtering performance of the swing grille 2. The structure is simple, the operation is convenient, the versatility is strong, and the adaptability is good.

[0066] After the cleaning of the swing grille 2 is completed, the controller turns off the water pump 18 and simultaneously starts the first motor 11. The first motor 11 drives the elastic collection frame 3 to move upward through the pull rope 6, the rope 5 and the connecting block 4. When the elastic collection frame 3 moves upward, by virtue of its own elasticity, the side end of the elastic collection frame 3 always remains in contact with the end face of the swing grille 2. Then, the elastic collection frame 3 performs elastic filtering and impurity removal on the end of the swing grille 2, effectively improving the cleaning and stability of the swing grille 2.

[0067] After taking out the elastic collection frame 3, the impurities and the like on its top are recycled and cleaned, and then the elastic collection frame 3 is placed back inside the water diversion trough 1, so that the device returns to its initial state and the above process is repeated for use.

[0068] This device has high installation efficiency, strong controllability, stable filtering and impurity removal effect on the water flow in the water diversion trough 1. At the same time, each component cooperates with each other, the operation is simple and the versatility is strong. Among them, the water pressure has different effects in different working processes, with high stability, strong adaptability, thorough and efficient filtering and impurity removal, energy saving and emission reduction, and environmental protection.

[0069] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dirt filtering device for a pumped storage power station, comprising a water inlet channel, and a controller is arranged on one side of the outer end of the water inlet channel, characterized in that, A swing grille is movably connected between the inner side walls of the water diversion trough, a horizontal axis is provided on the top of the swing grille, and both sides of the horizontal axis are rotatably connected to the inner wall of the water diversion trough through bearings, and an elastic collection frame is slidably connected to the bottom of the inner side of the water diversion trough, and a plurality of deformation water-permeable holes are opened inside the elastic collection frame; A nozzle is rotatably connected between the inner side walls of both sides of the water diversion trough and located on the side of the swing grille away from the elastic collection frame. The nozzle is provided with a plurality of nozzles for washing the swing grille. A pressure sensor is provided at the outer end of the nozzle. A horizontal plate is provided on the inner side wall of the water diversion trough. An elastic damping rod is provided at one end of the horizontal plate close to the swing grille. The other end of the elastic damping rod abuts against the side wall of the swing grille. The water diversion trough is provided with a water inlet assembly connected to the spray pipe, the bottom of the water diversion trough is provided with a water inlet channel, and the water diversion trough is provided with a filter frame above the water inlet channel; The water inlet assembly includes a water pump, a water inlet pipe and a connecting pipe, wherein the water inlet pipe is fixedly connected to the water inlet end of the water pump, the connecting pipe is fixedly connected to the output end of the water pump, and the bottom end of the connecting pipe is fixedly connected to the nozzle; The swing grille comprises a plurality of mutually perpendicular transverse railings and vertical railings, filter holes are formed between the transverse railings and the vertical railings, a plurality of groups of the nozzles are directly facing the transverse railings of the swing grille when not in operation, a plurality of groups of the nozzles and the vertical railings are staggered and distributed, the swing grille matches the inner wall of the water diversion trough, an elastic block is provided at the bottom of the swing grille, the elastic block matches the inner bottom of the water diversion trough and is sealed and slidably connected; A gate is provided at the inlet of the water diversion trough, the elastic direction of the elastic collection frame is horizontal and the same as the water flow direction in the water diversion trough, that is, the elastic direction of the elastic collection frame is from the gate to the end of the swing grille, the elastic coefficient of the elastic damping rod is greater than the elastic coefficient of the elastic collection frame, and a flexible block is provided at the end of the elastic collection frame close to the swing grille; When the swing grille is squeezed by the water flow and impurities, it rotates toward the nozzle end. When the bottom of the swing grille contacts the nozzle, the pressure value detected by the pressure sensor increases continuously. When the pressure value detected by the pressure sensor is greater than the preset pressure value, the controller controls the water pump to start. The water pump starts to pump water from the water inlet pipe and then drains it into the connecting pipe. The water in the connecting pipe is sprayed out along the spray pipe and the nozzle. The water pressure sprayed by the nozzle exerts a reverse force on the bottom of the swing grille, causing the swing grille to swing in the opposite direction and return to its original position. When the bottom of the swing grille rotates toward the nozzle end, the elastic force of the elastic collecting frame itself causes the lateral size of the elastic collecting frame to increase synchronously, thereby ensuring that the end of the elastic collecting frame is in contact with the bottom of the swing grille at all times.

2. The dirt filtering device for a pumped storage power station according to claim 1, characterized in that, Both top walls on two sides of the elastic collection box are provided with two connecting blocks. Ropes are provided at the tops of the four connecting blocks, and the tops of the four ropes are provided with the same pulling rope. A support frame is provided on the water diversion trough, and a driving assembly for driving the pulling rope to move up and down is provided on the side wall of the support frame. A baffle is rotatably connected to one side of the elastic collection box, and a fixing assembly for fixing the baffle is provided on the top of the elastic collection box.

3. The dirt filtration device for a pumped-storage power station according to claim 2, characterized in that, The controller electrically controls each electrical component, and a sling for driving the gate to move up and down is provided at the bottom of the support frame.

4. The dirt filtering device for a pumped storage power station according to claim 2, characterized in that, The driving assembly includes a support plate, a rotating shaft, a winding roller and a first motor. There are two support plates, and both support plates are fixedly connected to the side wall of the support frame. The rotating shaft is rotatably connected between the two support plates. The winding roller is fixedly arranged on the rotating shaft. One end of the pulling rope is fixedly connected to the winding roller. The first motor is fixedly installed on the side wall of the support plate, and the output end of the first motor is fixedly connected to the rotating shaft.

5. The dirt filtering device of a pumped storage power station according to claim 2, characterized in that, The fixing assembly includes a plug rod, a top block and a spring. The plug rod is arranged through the elastic collection box. A jack adapted to the plug rod is opened on the baffle. The bottom end of the plug rod extends into the jack. The top block is fixedly connected to the top end of the plug rod. The spring is sleeved outside the plug rod, and the spring is fixedly connected to the top block and the elastic collection box respectively.

6. The dirt filtration device of a pumped storage power station according to claim 1, wherein, The water pump is fixedly arranged on the top of the water diversion trough, and the connecting pipe is a flexible pipe.

7. The dirt filtration device of a pumped storage power station according to claim 1, wherein A fixing plate is provided on the water diversion trough. A second motor is fixedly installed on the side wall of the fixing plate. A rotating rod is rotatably connected to the fixing plate. The output end of the second motor is fixedly connected to the rotating rod. A first pulley is provided on the rotating rod, and a second pulley is provided on the spray pipe. The first pulley and the second pulley are connected by a belt.

8. A dirt filtering device for a pumped-storage power station according to claim 1, characterized in that, An installation groove is opened on the side wall of the water diversion trough. The filter frame is arranged in the installation groove. A filter screen is arranged in the filter frame. An installation plate is provided on the side wall of the filter frame. The installation plate is fixedly connected to the outer side wall of the water diversion trough by bolts. A sealing gasket for sealing the gap between the filter frame and the installation groove is provided on the side wall of the filter frame.

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