Dynamic water gate structure for hydropower station

Abstract

The invention discloses a dynamic water gate structure for a hydropower station, and belongs to the technical field of hydropower stations, the dynamic water gate structure comprises a cross beam, a gate body, a counterweight mechanism, a driving mechanism and an energy recovery mechanism, stand columns are fixedly mounted on two sides of the bottom of the cross beam, the gate body is slidably mounted between the two stand columns, and lateral grooves are formed in two sides of the gate body; and a sealing plate is slidably installed in the lateral groove, a sealing gasket is fixedly installed on the outer side of the sealing plate, a connecting column is fixedly installed in the sealing plate, and a piston disc is fixedly installed at the other end of the connecting column. The sealing gaskets are tightly attached to the stand columns on the two sides outwards through water pressure impact, the water pressure self-adaptive sealing effect is formed, the larger the water pressure impact is, the stronger the sealing effect is, the leakage problem under long-term impact is effectively prevented, meanwhile, when water flow passes through the communicating holes, the internal spiral blades are driven to rotate, then the generator is driven to generate electricity, and the power generation efficiency is improved. Effective recovery of water flow energy is achieved when the door body needs to be lifted.

Description

Technical Field

[0001] The present invention relates to the technical field of hydropower stations, and particularly relates to a moving water gate structure for a hydropower station. Background Art

[0002] During the operation of a hydropower station, the gate is a key device for controlling water flow, and its sealing performance and operating energy consumption directly affect the project safety and economy. Traditional gates, especially under the condition of opening and closing in moving water, mainly rely on rigid pre-tightening force or elastic sealing elements to achieve closed-door sealing. This static sealing method has obvious deficiencies when facing long-term and high-intensity water flow impacts: the sealing material is prone to fatigue wear, resulting in seal failure and leakage; the instantaneous high pressure caused by the impact water pressure will also accelerate the damage of the sealing structure, and the sealing parts need to be frequently repaired or replaced, increasing the maintenance cost and shutdown risk. In addition, during the lifting process of the existing gates, especially in the case of larger sizes or water depths, the driving mechanism needs to completely overcome the huge weight of the gate body and water pressure to do work, with extremely high energy consumption. Although there are auxiliary solutions using buoyancy or counterweights, the structure is complex and the auxiliary effect is limited, and the energy recovery and utilization during operation cannot be achieved, and the overall energy efficiency of the system is low; therefore, we propose a moving water gate structure for a hydropower station to solve this problem. Summary of the Invention

[0003] The purpose of the present invention is to provide a moving water gate structure for a hydropower station to solve the problems raised in the above background art.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A moving water gate structure for a hydropower station includes: a cross beam, a gate body, a counterweight mechanism, a driving mechanism, and an energy recovery mechanism. Columns are fixedly installed on both sides of the bottom of the cross beam. The gate body is slidably installed between the two columns. Lateral grooves are opened on both sides of the gate body. A sealing plate is slidably installed in the lateral grooves. A sealing gasket is fixedly installed on the outer side of the sealing plate. A connecting column is fixedly installed inside the sealing plate. The other end of the connecting column is fixedly installed with a piston disk;

[0006] A vertical groove is opened at the top of the gate body. Circular grooves are opened on both inner walls of the vertical groove. The piston disk is slidably installed in the corresponding circular grooves. Two square grooves are opened on the front side of the gate body. A push plate is slidably installed in the square grooves. A water inlet hole is opened on the front side of the push plate. A first one-way valve and a filter screen are arranged in the water inlet hole.

[0007] Preferably, a communication hole is communicated between the square groove and the vertical groove. A second one-way valve is arranged in the communication hole;

[0008] The energy recovery mechanism includes: a rotary drum, a vertical shaft, a spiral cylinder, a driven cylinder and a generator. The rotary drum is rotatably installed in the communication hole. A spiral blade is fixedly installed inside the rotary drum. A driving bevel gear is fixedly sleeved outside the rotary drum. The vertical shaft is rotatably installed on the top inner wall of the square groove. A driven bevel gear is fixedly installed at the bottom end of the vertical shaft. The driving bevel gear meshes with the driven bevel gear. The spiral cylinder is fixedly sleeved outside the vertical shaft. A plurality of spiral strips are integrally formed on the outside of the spiral cylinder. The driven cylinder is slidably sleeved outside the spiral cylinder. A large gear is fixedly sleeved outside the driven cylinder. A small gear is fixedly installed on the input end of the generator. The small gear meshes with the large gear.

[0009] Preferably, the driving mechanism includes: a driving motor, a threaded sleeve, a lower sealing plug and a threaded rod. The threaded sleeve is threadedly sleeved outside the threaded rod. A driven gear is fixedly sleeved outside the threaded sleeve. A driving gear is fixedly installed on the output shaft of the driving motor. The driving gear meshes with the driven gear. A connecting plate is fixedly installed at the top end of the vertical groove. An upper sealing plug is fixedly installed at the bottom end of the threaded rod. A ventilation hole is formed at the top of the connecting plate. The upper sealing plug is movably inserted into the ventilation hole. A drain hole is formed in the top inner wall of the vertical groove. The lower sealing plug is movably inserted into the drain hole. A connecting rod is fixedly installed between the upper sealing plug and the lower sealing plug. The connecting rod is slidably installed in the connecting plate. A limiting plate is fixedly installed on one side of the connecting rod.

[0010] Preferably, an equipment box is fixedly installed inside the cross beam. A front cover is fixedly installed on the front side of the equipment box. The generator and the driving motor are both fixedly installed inside the equipment box. The rotary drum and the driven cylinder are both rotatably installed inside the equipment box.

[0011] Preferably, the counterweight mechanism includes: a counterweight plate, a connecting plate, a guide wheel, a fixed shaft and a plurality of steel wire ropes. The two ends of the steel wire rope are respectively fixedly connected to the counterweight plate and the connecting plate. The connecting plate is fixedly installed on the top of the door body. The steel wire rope is wound around the outside of the guide wheel. The guide wheel is rotatably sleeved outside the fixed shaft. The fixed shaft is fixedly installed inside the cross beam. A guiding groove is formed at the top end of the column. The counterweight plate is slidably installed in the guiding groove.

[0012] Preferably, a communication mechanism is arranged on one side of the top of the cross beam. The communication mechanism includes: an installation box, a storage battery, a signal receiver and a controller. The installation box is fixedly installed on the top of the cross beam. The storage battery and the controller are fixedly installed inside the installation box. A top cover is fixedly installed on the top of the installation box. The signal receiver is fixedly installed on the top of the top cover.

[0013] Preferably, a compression spring is fixedly installed on the rear side of the piston plate. The other end of the compression spring is fixedly installed with a baffle plate, which is fixedly installed on the bottom inner wall of the square groove. A limiting rod is fixedly installed on the side wall of the square groove, and the limiting rod is movably abutted against the front side of the push plate.

[0014] Preferably, connecting springs are fixedly installed on the sides of the two sealing plates close to each other. Grooves are formed on the side walls of the lateral grooves, and the other ends of the connecting springs are fixedly installed on the side walls of the grooves. Two limiting strips are fixedly installed on the sides of the two vertical plates close to each other, and the limiting strips are movably abutted against the outside of the door body.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. In the present invention, for the movable water gate structure used in a hydropower station, when the liquid level reaches the push plate, the push plate is pushed to move by the impact of water flow. The push plate can be reset under the action of the compression spring, so that water can enter the square groove through the water inlet. During this period, impurities are filtered through the filter screen, and the one-way conduction of water flow is realized through the first one-way valve. When the push plate moves inward, the water in the square groove is introduced into the vertical groove through the communication hole, so that the water pressure in the vertical groove increases, and then the piston disc is pushed to drive the two sealing plates to move away from each other, so that the sealing gasket abuts against the inner side of the column. With the long-term impact of water flow, water gradually enters the vertical groove, and the pressing degree of the sealing gasket gradually increases, so that the sealing effect can be improved in the area with large water flow impact, and leakage caused by long-term water flow impact can be avoided;

[0017] 2. In the present invention, for the movable water gate structure used in a hydropower station, when the water flow passes through the communication hole and passes through the rotating cylinder, the rotating cylinder is driven to rotate by pushing the spiral blades. The rotating cylinder drives the vertical shaft to rotate through the meshing of the driving bevel gear and the driven bevel gear. The vertical shaft drives the driven cylinder to rotate through the cooperation of the spiral cylinder and the driven cylinder. The driven cylinder drives the input end of the generator to rotate through the meshing of the large gear and the small gear, so that the generator can generate electricity and the energy can be recovered;

[0018] 3. In the present invention, a dynamic water gate structure for a hydropower station is described, which drives the driving gear to rotate by starting the driving motor, and the driving gear drives the threaded sleeve to rotate by meshing with the driven gear, and the threaded sleeve drives the threaded rod to move upward by cooperating with the thread of the threaded rod, and drives the upper sealing plug, the connecting rod, the limiting plate and the lower sealing plug to move upward, so that the upper sealing plug is disengaged from the air vent, and the lower sealing plug is disengaged from the drainage hole. Since the water pressure in the vertical groove is larger than that in the outside, the water flow in the vertical groove can be discharged from the drainage hole, and the outside air enters the vertical groove through the air vent to maintain the air pressure balance, so as to avoid affecting the circulation of water in the drainage hole, so that the sealing plate and the sealing gasket are reset under the action of the connecting spring, and when the limiting plate abuts against the connecting plate, the connecting plate and the door body can be driven to move upward to realize the lifting of the door body, so that the water discharge in the hydropower station can be controlled;

[0019] 4. In the present invention, the dynamic water gate structure for a hydropower station, during the rising process of the gate body, the counterweight plate moves downward due to gravity, and at the same time, the wire rope always maintains the upward pulling force on the gate body, so that the energy consumed by the drive motor to drive the gate body to rise is reduced, so that the overall center of gravity of the gate body and the counterweight plate moves up less, thereby reducing the work done to overcome gravity, achieving energy-saving effect, and at the same time, the gate body drives the spiral drum to move upward, and the spiral drum drives the driven drum to rotate through the cooperation of the spiral strip and the driven drum, thereby driving the input shaft of the generator to rotate, further recovering energy and improving the energy-saving effect;

[0020] 5. In the present invention, a dynamic water gate structure for a hydropower station is described. By utilizing water pressure impact, the sealing gasket is tightly fitted to the columns on both sides outward, thereby forming a water pressure adaptive sealing effect. The greater the water pressure impact, the stronger the sealing effect, which effectively prevents leakage problems under long-term impact. At the same time, the internal spiral blades are driven to rotate when water flows through the connecting holes, thereby driving the generator to generate electricity, thereby realizing effective recovery of water flow energy. When it is necessary to lift the door body, the driving motor can first open the air vents and drain holes through gear transmission and thread transmission to release the internal water pressure and balance the air pressure, and then lift the door body after the sealing state is released. In this process, the counterweight mechanism converts the gravity of the counterweight plate into an auxiliary pulling force for lifting the door body through a wire rope and a guide wheel system, thereby significantly reducing the driving energy consumption. When the door body rises, it also drives the spiral barrel to rotate, driving another set of gear sets to make the generator generate electricity again, further recovering the door body movement energy, and achieving multiple energy-saving effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the three-dimensional structure of a dynamic water gate structure for a hydropower station proposed by the present invention;

[0022] Figure 2 A schematic cross-sectional view of a dynamic water gate structure for a hydropower station proposed by the present invention;

[0023] Figure 3 is Figure 2 a partial enlarged view of part A in

[0024] Figure 4 is Figure 2 a partial enlarged view of part B in

[0025] Figure 5 is Figure 2 a partial enlarged view of part C in

[0026] Figure 6 a schematic diagram of a partial sectional structure of a movable gate structure for a hydropower station proposed by the present invention;

[0027] Figure 7 a schematic diagram of a top - view sectional structure of a movable gate structure for a hydropower station proposed by the present invention;

[0028] Figure 8 is Figure 7 a partial enlarged view of part D in

[0029] Figure 9 a schematic diagram of a bottom - view sectional structure of a movable gate structure for a hydropower station proposed by the present invention;

[0030] Figure 10 a three - dimensional structure schematic diagram of a driving mechanism and an energy recovery mechanism of a movable gate structure for a hydropower station proposed by the present invention;

[0031] Figure 11 a three - dimensional structure schematic diagram of a counterweight mechanism proposed by the present invention;

[0032] Figure 12 a sectional structure schematic diagram of a gate body proposed by the present invention;

[0033] Figure 13 a partial three - dimensional structure schematic diagram of an energy recovery mechanism proposed by the present invention.

[0034] In the figure: 1, cross beam; 101, column; 102, limit strip; 2, door body; 201, connecting plate; 202, vertical groove; 203, circular groove; 204, square groove; 205, lateral groove; 3, communication mechanism; 301, installation box; 302, controller; 303, storage battery; 304, top cover; 305, signal receiver; 4, equipment box; 401, front cover; 5, drive mechanism; 501, threaded rod; 502, upper sealing plug; 503, connecting rod; 504, limit plate; 505, lower sealing plug; 506, threaded sleeve; 507, driven gear; 508, driving gear; 509, driving motor; 6, energy recovery mechanism; 601, generator; 602, pinion gear; 603, large gear; 604, vertical shaft; 605, spiral cylinder; 606, driven bevel gear; 607, driving bevel gear; 608, rotating cylinder; 609, spiral blade; 610, driven cylinder; 7, counterweight mechanism; 701, counterweight plate; 702, steel wire rope; 703, connecting plate; 704, guide wheel; 705, fixed shaft; 8, push plate; 801, first one-way valve; 802, compression spring; 803, baffle plate; 804, limit rod; 9, sealing plate; 901, sealing gasket; 902, connecting spring; 903, connecting column; 904, piston disc; 10, second one-way valve. Detailed implementation mode

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the 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.

[0036] Refer to Figures 1-13 , a moving water gate structure for a hydropower station, including: a cross beam 1, a door body 2, a counterweight mechanism 7, a drive mechanism 5 and an energy recovery mechanism 6. Columns 101 are fixedly installed on both sides of the bottom of the cross beam 1. The door body 2 is slidably installed between the two columns 101. Lateral grooves 205 are opened on both sides of the door body 2. A sealing plate 9 is slidably installed in the lateral grooves 205. A sealing gasket 901 is fixedly installed on the outer side of the sealing plate 9. A connecting column 903 is fixedly installed inside the sealing plate 9. The other end of the connecting column 903 is fixedly installed with a piston disc 904;

[0037] Vertical grooves 202 are opened at the top of the door body 2. Circular grooves 203 are opened on the inner walls of both sides of the vertical grooves 202. The piston disc 904 is slidably installed in the corresponding circular grooves 203. Two square grooves 204 are opened on the front side of the door body 2. A push plate 8 is slidably installed in the square grooves 204. A water inlet hole is opened on the front side of the push plate 8. A first one-way valve 801 and a filter screen are arranged in the water inlet hole.

[0038] In this embodiment, a communication hole is provided between the square groove 204 and the vertical groove 202, and a second one-way valve 10 is arranged in the communication hole;

[0039] The energy recovery mechanism 6 includes: a rotating cylinder 608, a vertical shaft 604, a spiral cylinder 605, a driven cylinder 610, and a generator 601. The rotating cylinder 608 is rotatably installed in the communication hole. A spiral blade 609 is fixedly installed inside the rotating cylinder 608. An active bevel gear 607 is fixedly sleeved outside the rotating cylinder 608. The vertical shaft 604 is rotatably installed on the top inner wall of the square groove 204. A driven bevel gear 606 is fixedly installed at the bottom end of the vertical shaft 604. The active bevel gear 607 meshes with the driven bevel gear 606. The spiral cylinder 605 is fixedly sleeved outside the vertical shaft 604. A plurality of spiral strips are integrally formed on the outside of the spiral cylinder 605. The driven cylinder 610 is slidably sleeved outside the spiral cylinder 605. A large gear 603 is fixedly sleeved outside the driven cylinder 610. A small gear 602 is fixedly installed on the input end of the generator 601. The small gear 602 meshes with the large gear 603.

[0040] In this embodiment, the driving mechanism 5 includes: a driving motor 509, a threaded sleeve 506, a lower sealing plug 505, and a threaded rod 501. The threaded sleeve 506 is threadedly sleeved outside the threaded rod 501. A driven gear 507 is fixedly sleeved outside the threaded sleeve 506. An active gear 508 is fixedly installed on the output shaft of the driving motor 509. The active gear 508 meshes with the driven gear 507. A connecting plate 201 is fixedly installed at the top end of the vertical groove 202. An upper sealing plug 502 is fixedly installed at the bottom end of the threaded rod 501. A ventilation hole is formed in the top of the connecting plate 201. The upper sealing plug 502 is movably inserted into the ventilation hole. A drainage hole is formed in the top inner wall of the vertical groove 202. The lower sealing plug 505 is movably inserted into the drainage hole. A connecting rod 503 is fixedly installed between the upper sealing plug 502 and the lower sealing plug 505. The connecting rod 503 is slidably installed in the connecting plate 201. A limiting plate 504 is fixedly installed on one side of the connecting rod 503.

[0041] In this embodiment, an equipment box 4 is fixedly installed inside the cross beam 1. A front cover 401 is fixedly installed on the front side of the equipment box 4. The generator 601 and the driving motor 509 are both fixedly installed inside the equipment box 4. The rotating cylinder 608 and the driven cylinder 610 are both rotatably installed inside the equipment box 4.

[0042] In this embodiment, the counterweight mechanism 7 includes: a counterweight plate 701, a connecting plate 703, a guide wheel 704, a fixed shaft 705, and a plurality of steel wire ropes 702. The two ends of the steel wire rope 702 are respectively fixedly connected to the counterweight plate 701 and the connecting plate 703. The connecting plate 703 is fixedly installed on the top of the door body 2. The steel wire rope 702 is wound around the outside of the guide wheel 704. The guide wheel 704 is rotatably sleeved outside the fixed shaft 705. The fixed shaft 705 is fixedly installed inside the cross beam 1. A guiding groove is formed at the top end of the column 101. The counterweight plate 701 is slidably installed in the guiding groove.

[0043] In this embodiment, a communication mechanism 3 is provided on one side of the top of the cross beam 1. The communication mechanism 3 includes: a mounting box 301, a storage battery 303, a signal receiver 305, and a controller 302. The mounting box 301 is fixedly installed on the top of the cross beam 1. The storage battery 303 and the controller 302 are fixedly installed inside the mounting box 301. A top cover 304 is fixedly installed on the top of the mounting box 301. The signal receiver 305 is fixedly installed on the top of the top cover 304.

[0044] In this embodiment, a compression spring 802 is fixedly installed on the rear side of the piston plate. The other end of the compression spring 802 is fixedly installed with a baffle 803. The baffle 803 is fixedly installed on the bottom inner wall of the square groove 204. A limiting rod 804 is fixedly installed on the side wall of the square groove 204. The limiting rod 804 is movably abutted against the front side of the push plate 8.

[0045] In this embodiment, a connecting spring 902 is fixedly installed on one side of each of the two sealing plates 9 close to each other. A groove is formed on the side wall of the lateral groove 205. The other end of the connecting spring 902 is fixedly installed on the side wall of the groove. Two limiting strips 102 are fixedly installed on one side of each of the two vertical plates close to each other. The limiting strips 102 are movably abutted against the outside of the door body 2.

[0046] In this embodiment, during use, when the liquid level reaches the push plate 8, the push plate 8 is pushed to move by the impact of the water flow. The push plate 8 can be reset under the action of the compression spring 802. Thus, under the action of the water flow, water enters the square groove 204 through the water inlet. During this period, impurities are filtered through the filter screen. The first one-way valve 801 realizes the one-way conduction of the water flow. When the push plate 8 moves inward, the water in the square groove 204 is introduced into the vertical groove 202 through the communication hole, so that the water pressure in the vertical groove 202 increases. Then, the piston disc 904 is pushed to drive the two sealing plates 9 away from each other, so that the sealing gasket 901 abuts against the inner side of the column 101. With the long-term impact of the water flow, water gradually enters the vertical groove 202, and the pressing degree of the sealing gasket 901 gradually increases. Thus, the sealing effect can be improved in the area with large water flow impact, and leakage caused by the long-term impact of the water flow can be avoided.

[0047] When the water flow passes through the communication hole, it passes through the rotating cylinder 608, and drives the rotating cylinder 608 to rotate by pushing the spiral blade 609. The rotating cylinder 608 drives the vertical shaft 604 to rotate through the meshing of the driving bevel gear 607 and the driven bevel gear 606. The vertical shaft 604 drives the driven cylinder 610 to rotate through the cooperation of the spiral cylinder 605 and the driven cylinder 610. The driven cylinder 610 drives the input end of the generator 601 to rotate through the meshing of the large gear 603 and the small gear 602. Thus, the generator 601 can generate electricity to realize energy recovery.

[0048] By starting the driving motor 509 to drive the driving gear 508 to rotate, the driving gear 508 drives the threaded sleeve 506 to rotate through meshing with the driven gear 507. The threaded sleeve 506 drives the threaded rod 501 to move upward through the threaded fit with the threaded rod 501, and drives the upper sealing plug 502, the connecting rod 503, the limiting plate 504 and the lower sealing plug 505 to move upward, so that the upper sealing plug 502 is disengaged from the ventilation hole, and the lower sealing plug 505 is disengaged from the drain hole. Since the water pressure in the vertical groove 202 is relatively large compared with the outside, the water flow in the vertical groove 202 can be discharged through the drain hole, and the outside air can enter the vertical groove 202 through the ventilation hole to maintain air pressure balance, avoiding affecting the flow of water in the drain hole. Thus, the sealing plate 9 and the sealing gasket 901 are reset under the action of the connecting spring 902. When the limiting plate 504 abuts against the connecting plate 201, it can start to drive the connecting plate 201 and the door body 2 to move upward, realizing the lifting of the door body 2, so as to control the discharge of water in the hydropower station;

[0049] During the rising process of the door body 2, the counterweight plate 701 moves downward due to gravity. At the same time, the steel wire rope 702 always maintains an upward pulling force on the door body 2, reducing the energy consumed by the driving motor 509 to drive the door body 2 to rise, and making the overall center of gravity of the door body 2 and the counterweight plate 701 move upward less, thus reducing the work done against gravity and achieving an energy-saving effect. At the same time, the door body 2 drives the spiral cylinder 605 to move upward. The spiral cylinder 605 drives the driven cylinder 610 to rotate through the cooperation of the spiral strip and the driven cylinder 610, thereby driving the input shaft of the generator 601 to rotate, further recovering energy and enhancing the energy-saving effect.

[0050] The above has introduced in detail a moving water gate structure for a hydropower station provided by the present invention. Specific embodiments are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A movable water gate structure for a hydropower station, characterized in that, Comprising: A crossbeam (1), a door body (2), a counterweight mechanism (7), a driving mechanism (5) and an energy recovery mechanism (6). Both sides of the bottom of the crossbeam (1) are fixedly installed with columns (101). The door body (2) is slidably installed between the two columns (101). Both sides of the door body (2) are provided with lateral grooves (205). A sealing plate (9) is slidably installed in the lateral grooves (205). A sealing gasket (901) is fixedly installed on the outer side of the sealing plate (9). A connecting column (903) is fixedly installed inside the sealing plate (9). The other end of the connecting column (903) is fixedly installed with a piston disc (904). A vertical groove (202) is provided at the top of the door body (2). Circular grooves (203) are provided on both inner walls of the vertical groove (202). The piston disc (904) is slidably installed in the corresponding circular groove (203). Two square grooves (204) are provided on the front side of the door body (2). A push plate (8) is slidably installed in the square grooves (204). A water inlet hole is provided on the front side of the push plate (8). A first one-way valve (801) and a filter screen are provided in the water inlet hole.

2. The movable water gate structure for a hydropower station according to claim 1, characterized in that, A communication hole is provided between the square groove (204) and the vertical groove (202). A second one-way valve (10) is provided in the communication hole. The energy recovery mechanism (6) comprises: a rotary drum (608), a vertical shaft (604), a spiral cylinder (605), a driven cylinder (610) and a generator (601). The rotary drum (608) is rotatably installed in the communication hole. A spiral blade (609) is fixedly installed inside the rotary drum (608). A driving bevel gear (607) is fixedly sleeved on the outer side of the rotary drum (608). The vertical shaft (604) is rotatably installed on the inner wall of the top of the square groove (204). A driven bevel gear (606) is fixedly installed at the bottom end of the vertical shaft (604). The driving bevel gear (607) meshes with the driven bevel gear (606). The spiral cylinder (605) is fixedly sleeved on the outer side of the vertical shaft (604). A plurality of spiral strips are integrally formed on the outer side of the spiral cylinder (605). The driven cylinder (610) is slidably sleeved on the outer side of the spiral cylinder (605). A large gear (603) is fixedly sleeved on the outer side of the driven cylinder (610). A small gear (602) is fixedly installed on the input end of the generator (601). The small gear (602) meshes with the large gear (603).

3. The movable water gate structure for a hydropower station according to claim 1, characterized in that, The driving mechanism (5) includes: a driving motor (509), a threaded sleeve (506), a lower sealing plug (505) and a threaded rod (501). The threaded sleeve (506) is threadedly sleeved on the outside of the threaded rod (501). A driven gear (507) is fixedly sleeved on the outside of the threaded sleeve (506). A driving gear (508) is fixedly installed on the output shaft of the driving motor (509). The driving gear (508) meshes with the driven gear (507). A connecting plate (201) is fixedly installed at the top end of the vertical groove (202). An upper sealing plug (502) is fixedly installed at the bottom end of the threaded rod (501). Vent holes are formed in the top of the connecting plate (201). The upper sealing plug (502) is movably inserted into the vent holes. Drain holes are formed in the top inner wall of the vertical groove (202). The lower sealing plug (505) is movably inserted into the drain holes. A connecting rod (503) is fixedly installed between the upper sealing plug (502) and the lower sealing plug (505). The connecting rod (503) is slidably installed in the connecting plate (201). A limiting plate (504) is fixedly installed on one side of the connecting rod (503).

4. The movable water gate structure for a hydropower station according to claim 2, characterized in that, An equipment box (4) is fixedly installed inside the cross beam (1). A front cover (401) is fixedly installed on the front side of the equipment box (4). The generator (601) and the driving motor (509) are both fixedly installed inside the equipment box (4). The rotating cylinder (608) and the driven cylinder (610) are both rotatably installed inside the equipment box (4).

5. The movable water gate structure for a hydropower station according to claim 1, characterized in that, The counterweight mechanism (7) includes: a counterweight plate (701), a connecting plate (703), guide wheels (704), a fixed shaft (705) and a plurality of steel wire ropes (702). The two ends of the steel wire rope (702) are respectively fixedly connected to the counterweight plate (701) and the connecting plate (703). The connecting plate (703) is fixedly installed on the top of the door body (2). The steel wire rope (702) is wound around the outside of the guide wheel (704). The guide wheel (704) is rotatably sleeved on the outside of the fixed shaft (705). The fixed shaft (705) is fixedly installed inside the cross beam (1). A guiding groove is formed at the top end of the column (101). The counterweight plate (701) is slidably installed in the guiding groove.

6. The movable water gate structure for a hydropower station according to claim 1, characterized in that, A communication mechanism (3) is arranged on one side of the top of the cross beam (1). The communication mechanism (3) includes: an installation box (301), a storage battery (303), a signal receiver (305) and a controller (302). The installation box (301) is fixedly installed on the top of the cross beam (1). The storage battery (303) and the controller (302) are fixedly installed inside the installation box (301). A top cover (304) is fixedly installed on the top of the installation box (301). The signal receiver (305) is fixedly installed on the top of the top cover (304).

7. The movable water gate structure for a hydropower station according to claim 1, characterized in that, A compression spring (802) is fixedly installed on the rear side of the piston plate. The other end of the compression spring (802) is fixedly installed with a baffle (803).

8. The movable water gate structure for a hydropower station according to claim 1, characterized in that, On one side of the two sealing plates (9) close to each other, connecting springs (902) are fixedly installed, and the other ends of the connecting springs (902) are fixedly installed on the side wall of the groove. On one side of the two vertical plates close to each other, two limiting strips (102) are fixedly installed.

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