Hydraulic power generation facility

Abstract

To provide a hydraulic power generation facility capable of easily performing maintenance and stably generating power.SOLUTION: The hydraulic power generation facility comprises: an intake mechanism 1 for taking in water from a high-place intake region 100; and a power generation mechanism 5 installed at a place lower than the intake mechanism 1. A flow of water taken in by the intake mechanism 1 is used for generating power by the power generation mechanism 5. The intake mechanism 1 is provided with an intake pipe 102 for scooping up water from the intake region 100 through a siphon action, a water pouring pipe 105 connected to the upper position of the intake pipe 102, a pump 104 for pouring water of the intake region 100 through the water pouring pipe 105 to the intake pipe 102, and a dust removal filter 103 that covers the surroundings of an intake port 101 of the intake pipe 102 dipped in the intake region 100. The power generation mechanism 5 stops the pump 104 during power generation, and drives the pump 104 when dust is removed through the dust removal filter 103.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a hydroelectric power generation facility, and more particularly to a hydroelectric power generation facility equipped with a water intake device using a siphon system. [Background technology]

[0002] A variety of hydroelectric power generation facilities have been proposed to generate electricity by using water flow to drive a generator. A method that utilizes the siphon principle to convey water is adopted as an efficient water intake method for hydroelectric power generation facilities. When water intake stops because the water level in the reservoir drops and the siphon action (operation) stops, the following method can be used to create the siphon action and restart water intake.

[0003] One method of taking water is to fill the water pipe with water using a water supply pump installed midway through the pipe, creating a sealed (vacuum) state inside the pipe to create a siphon effect (see Patent Document 1). Another method of taking water is to take water from a dam lake using the siphon method, by operating a vacuum pump with the inlet valve closed to fill the water channel (see Patent Document 2).

[0004] Furthermore, in this type of hydroelectric power generation facility, it is essential to remove dust at the water intake so that fallen leaves, garbage, and other dust that flows through the waterway through which water is taken in does not flow into the generator. A typical water intake dust removal device for removing dust at the water intake is one that covers the water intake with a mesh screen material (see Patent Document 3). The water intake dust removal device of Patent Document 3 is composed of a dust removal box that surrounds the water intake with a screen material in a cage shape. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2004-036274 A [Patent Document 2] JP 2000-273853 A [Patent Document 3] JP 2013-119744 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, even if a water intake dust removal device as in Patent Document 3 is installed, the screen material becomes clogged with dust such as fallen leaves and branches during use. This has the disadvantage that the desired amount of water cannot be taken in, and the screen material needs to be cleaned every few days. Therefore, there is a problem that stable power generation cannot be achieved unless maintenance is performed regularly. In addition, since the amount of water intake varies greatly depending on the season, it is necessary to install a waterway of a size that allows a sufficient amount of water to be taken in even when the river flow is low, and to return the surplus water for power generation to the river, thereby avoiding wasteful waterway maintenance.

[0007] In view of the above problems, an object of the present invention is to provide a hydroelectric power generation facility that can be easily maintained and can generate electric power stably. [Means for solving the problem]

[0008] In order to achieve the above-mentioned object, the present invention provides a hydroelectric power generation facility comprising a water intake mechanism that takes in water from a high-altitude water intake area and a power generation mechanism installed lower than the water intake mechanism, wherein the power generation mechanism generates power by utilizing the flow of water taken in by the water intake mechanism, the water intake mechanism comprising an intake pipe that draws up water from the water intake area by siphon action, a water injection pipe connected to an upper position of the water intake pipe, a pump that injects water from the water intake area into the water intake pipe through the water injection pipe, and a dust filter that covers the area around the intake port of the water intake pipe which is submerged in the water intake area, and the pump is stopped while the power generation mechanism is generating power, and the pump is driven when dust is being removed from the dust filter. Effect of the Invention

[0009] According to the present invention, the dust removal action is performed by utilizing the water supply pump for generating the siphon action, which makes maintenance easy. In addition, the dust removal action can be performed while the water pipe is full of water, so the switching time when power generation is resumed after the dust removal action is completed can be shortened. [Brief description of the drawings]

[0010] [Figure 1] 1 is a schematic diagram showing the overall configuration of a hydroelectric power generation facility according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a schematic diagram showing a configuration of a water intake mechanism in the hydroelectric power generation facility shown in FIG. [Diagram 3] 3 is a diagram showing the state of the water intake mechanism shown in FIG. 2 during power generation operation. FIG. [Figure 4] 3 is a diagram showing a state of the water intake mechanism shown in FIG. 2 during dust removal operation. FIG. [Diagram 5] FIG. 13 is a diagram showing the state when the water level in the intake area drops. [Figure 6] FIG. 13 is a diagram showing the state when the water level in the intake area returns to normal. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, a hydroelectric power generation facility according to an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a schematic diagram showing the overall configuration of the hydroelectric power generation facility according to the embodiment. Fig. 2 is a schematic diagram showing the configuration of a water intake mechanism in the hydroelectric power generation facility shown in Fig. 1.

[0012] 1. Overall structure As shown in FIG. 1, the hydroelectric power generation facility of this embodiment includes a water intake mechanism 1, an upstream water pipe (first water pipe) 2, a dust removal tank 3, a downstream water pipe (second water pipe) 4, a power generation mechanism 5, a discharge pipe 6, and a control unit 7.

[0013] The water intake mechanism 1 is provided in a water intake area 100 which is a high-altitude water storage area or the upstream area of ​​a river. The upstream water conveyance pipe 2 guides the water taken in by the water intake mechanism 1 downstream. The dust removal tank 3 temporarily stores the water from the upstream water conveyance pipe 2 and removes dust. The downstream water conveyance pipe 4 guides the water from which dust has been removed by the dust removal tank 3 downstream. The power generation mechanism 5 generates power from the water flow supplied from the downstream water conveyance pipe 4. The discharge pipe 6 discharges the water discharged from the power generation mechanism 5 into a drainage area 600 which is a low-altitude water storage area or the downstream area of ​​a river. The control unit 7 controls the operation of each part of the hydroelectric power generation equipment.

[0014] As shown in FIGS. 1 and 2, the water intake mechanism 1 includes a water intake pipe 102, a dust filter 103, a pump 104, a water injection pipe 105, a water injection valve 106, an air intake pipe 107, an air intake valve 108, and a water level gauge 109.

[0015] The intake pipe 102 takes in water by submerging the intake port 101 in the intake area 100. The dust filter 103 covers the periphery of the intake port 101 of the intake pipe 102. The pump 104 is installed submerged in the intake area 100. The water injection pipe 105 supplies water pumped up by the pump 104 to the intake pipe 102. The water injection valve 106 controls the injection of water from the water injection pipe 105 to the intake pipe 102. The intake pipe 107 is connected to the upstream water conveyance pipe 2 and is open to the atmosphere. The intake valve 108 controls the ventilation of the intake pipe 107. The water level gauge 109 measures the water level in the intake area 100.

[0016] In the water intake mechanism 1, the water intake pipe 102 is L-shaped and has a vertical extension portion 121 extending vertically from the water intake port 101 and a horizontal extension portion 122 extending horizontally above the water level of the water intake area 100. One end of the water intake pipe 102 opposite the water intake port 101 is connected to the upstream water conveyance pipe 2. The water injection pipe 105 and the air intake pipe 107 are connected by the horizontal extension portion 122 of the water intake pipe 102. The horizontal extension portion 122 of the water intake pipe 102 may have a shape that is inclined so as to become lower from the upstream side to the downstream side. In this case, the air intake pipe 107 is connected to the top of the water intake pipe 102.

[0017] The dust filter 103 is configured with a housing 130 having an opening 131 on the upper surface for inserting the water intake 101, and the side of the housing 130 is covered with a mesh-like screen material (filter section) 132. The bottom surface (lower surface) of the housing 130 may be configured with a screen material similar to the screen material 132 on the side, or may be configured with a metal plate without openings. Although the screen material 132 is configured with a mesh-like wire netting, it may be configured with a metal plate with punched holes. Although the housing 130 and the screen material 132 are configured with a metal material, they may be configured with a ceramic material or a resin material.

[0018] The water level gauge 109 also has a high water level electrode 191, a low water level electrode 192, an earth electrode 193, and a protective tube 194. The high water level electrode 191 extends from above the intake area 100, and its tip is located at the high water level position Wh of the intake area 100. The low water level electrode 192 extends from above the intake area 100, and its tip is located at the low water level position Wl of the intake area 100. The earth electrode 193 has an opposite polarity to the high water level electrode 191 and the low water level electrode 192. The protective tube 194 covers the electrodes 191 to 193. The water level gauge 109 has an upper end fixed to the horizontal extension part 122 of the intake pipe 102, and is suspended from above the intake area 100, and the lower end of the water level gauge 109 is submerged in the intake area 100.

[0019] 1, the dust removal tank 3 is provided between the water intake mechanism 1 and the power generation mechanism 5, and is installed at a lower position than the water intake mechanism 1 and at a higher position than the power generation mechanism 5. The dust removal tank 3 has a tank body 301, an exhaust pipe 302, an exhaust valve 303, a drain pipe 304, a drain valve 305, and a safety valve 306.

[0020] Tank body 301 is connected to the upstream water pipe 2. Exhaust pipe 302 opens tank body 301 to the atmosphere. Exhaust valve 303 controls the ventilation of exhaust pipe 302. Drain pipe 304 discharges water stored inside tank body 301. Drain valve 305 controls the flow of water through drain pipe 304. Safety valve 306 releases water in response to abnormal pressure when tank body 301 is full of water.

[0021] In the dust removal tank 3, the downstream end of the upstream water conduit 2 is connected to the upper surface or the upper surface position (upper position) of the upstream side surface of the tank body 301, and water taken in by the water intake mechanism 1 flows into the tank body 301 through the upstream water conduit 2. On the other hand, the upstream end of the downstream water conduit 4 is connected to the downstream side surface of the tank body 301 at a position lower than the connection position with the upstream water conduit 2 and higher than the lower surface (bottom) of the tank body 301.

[0022] An exhaust pipe 302 and a safety valve 306 are connected to the upper surface or upper surface position (upper position) of the side of the tank body 301, allowing ventilation between the upper space inside the tank body 301 and the outside. A drain pipe 304 is connected to the lower surface (bottom) of the tank body 301 or the side of the tank body 301 at a position lower than the connection position of the downstream water pipe 4.

[0023] The exhaust pipe 302 and the safety valve 306 are connected to the highest position of the tank body 301, and the upstream water conduit 2 is connected to the next highest position. Meanwhile, the drain pipe 304 is connected to the lowest position of the tank body 301, and the downstream water conduit 4 is connected to the next lowest position. That is, from the highest position along the height direction of the tank body 301, the exhaust pipe 302 and the safety valve 306, the upstream water conduit 2, the downstream water conduit 4, and the drain pipe 304 are each connected to the tank body 301 in this order.

[0024] As shown in FIG. 1, the power generation mechanism 5 has a water turbine 501, a generator 502, a flow meter 503, a pressure sensor 504, and a water supply valve 505. The water turbine 501 is connected to the downstream end of the downstream water conduit 4. The generator 502 rotates in synchronization with the rotation of the water turbine 501 to generate power. The flow meter 503 measures the flow rate of water flowing through the downstream water conduit 4. The pressure sensor 504 measures the water pressure in the downstream water conduit 4. The water supply valve 505 controls the water supply from the downstream water conduit 4 to the water turbine 501. The flow meter 503, the pressure sensor 504, and the water supply valve 505 are installed in this order from the upstream side along the downstream water conduit 4.

[0025] The water turbine 501 has its upstream side connected to the outlet of the downstream water conduit 4, and converts the water flowing in from the downstream water conduit 4 into rotational motion using a propeller water turbine provided inside. The water turbine 501 can basically be any type classified as a reaction water turbine, and may be a water turbine such as a Francis water turbine other than the propeller water turbine described above. The generator 502 generates electricity by rotating using the rotational motion obtained by the water turbine 501. A discharge pipe 6 is connected downstream of the water turbine 501, and the water that has passed through the water turbine 501 is discharged through the discharge pipe 6 to the drainage area 600.

[0026] The control unit 7 communicates with each of the pump 104, the water injection valve 106, the air intake valve 108, the water level gauge 109, the drain valve 305, the flow meter 503, the pressure sensor 504, the water supply valve 505, and the generator 502. That is, the control unit 7 receives measurement signals from the water level gauge 109, the flow meter 503, the pressure sensor 504, and the generator 502, and recognizes the operating state of the hydroelectric power generation facility.

[0027] Furthermore, the control unit 7 controls the operation of the pump 104, the water injection valve 106, the air intake valve 108, the drain valve 305, and the water supply valve 505 in accordance with the operating status of the hydroelectric power generation facility. The control unit 7 may be configured to be capable of communicating with a remote location by connecting to an external communication line, thereby enabling the operating status of the hydroelectric power generation facility to be monitored from a remote location and the operation of the facility to be remotely controlled.

[0028] 2. Operation when power generation starts The operation of each part when the hydroelectric power generation facility starts generating power will be described below. First, in order to supply water to the upstream water pipe 2, the dust tank 3, and the downstream water pipe 4, the water supply valve 505 of the power generation mechanism 5 is closed to stop the discharge from the discharge pipe 6. At this time, the intake valve 108 is closed so that the water intake mechanism 1 takes in water by siphon action. In addition, the drain valve 305 is closed so that water is supplied to the downstream water pipe 4 through the dust tank 3. In this way, by closing the intake valve 108, the drain valve 305, and the water supply valve 505, the water supply pipes that communicate with the upstream water pipe 2, the downstream water pipe 4, and the dust tank 3 are opened to the atmosphere only by the exhaust valve 303.

[0029] With the intake valve 108, drain valve 305, and water supply valve 505 all closed, the water injection valve 106 is opened and the pump 104 is driven to pump up water stored in the water intake area 100 with the pump 104 and inject it into the water intake pipe 102 through the water injection pipe 105. The water injected into the water intake pipe 102 is supplied to the dust removal tank 3, which is located lower than the water intake mechanism 1, via the upstream water conveyance pipe 2. When the water level of the water stored in the dust removal tank 3 rises and reaches the connection part with the downstream water conveyance pipe 4, the water stored in the dust removal tank 3 flows into the downstream water conveyance pipe 4.

[0030] Since the water supply valve 505 of the power generation mechanism 5 is closed, the water discharged from the dust removal tank 3 is stored in the downstream water conduit 4. Then, when the pressure sensor 504 connected to the downstream water conduit 4 detects that a predetermined pressure has been reached and it is confirmed that the upstream water conduit 2 is full of water, the pump 104 is stopped and water from the intake area 100 is pumped up into the water intake pipe 102 from the water intake port 101 due to the siphon effect. After that, when it is confirmed that the downstream water conduit 4 is also full of water based on the pressure measured by the pressure sensor 504, the water supply valve 505 is opened to supply water from the downstream water conduit 4 to the hydraulic turbine 501 of the power generation mechanism 5, and the generator 502 starts generating electricity.

[0031] After the power generation mechanism 5 starts generating power, water is taken in from the water intake area 100 by the siphon action in the water intake mechanism 1, and the water is poured into the dust removal tank 3 through the upstream water conduit 2. In the dust removal tank 3, dust such as soil and sand settles at a position lower than the downstream water conduit 4 due to the height positions of the upstream water conduit 2 and the downstream water conduit 4, and the water from which dust has been removed in the downstream water conduit 4 is supplied to the dust removal tank 3. The water supplied to the downstream water conduit 4 is supplied to the water wheel 501 of the power generation mechanism 5, causing the water wheel 501 to rotate and the generator 502 to generate electricity.

[0032] 3. Dust removal operation of water intake mechanism 1 3, water from the water intake area 100 flows upward from the water intake port 101 into the water intake pipe 102, so that water flows from the outside of the dust filter 103 covering the water intake pipe 102 toward the water intake pipe 102. That is, in the water intake area 100, a water flow is generated that flows from the outside of the dust filter 103 toward the water intake pipe 102 through the dust filter 103, so that dust such as fallen leaves, branches, and soil in the water intake area 100 sticks to the outside of the dust filter 103 due to this water flow. As a result, the screen material 132 of the dust filter 103 becomes clogged, and the amount of water intake by the water intake mechanism 1 decreases.

[0033] In order to remove dust adhering to the dust filter 103, the water injection valve 106 is periodically opened and the pump 104 is driven. That is, when a predetermined time has elapsed since the start of operation or the end of the previous dust removal operation, the water injection valve 106 is opened and the pump 104 is started to be driven, and water is supplied into the water intake pipe 102 through the water injection pipe 105. As a result, as shown in Fig. 4, water supplied from the water injection pipe 105 flows inside the water intake pipe 102 toward the water intake port 101. Therefore, water is discharged from the water intake port 101 of the water intake pipe 102, and water flows out from the inside of the dust filter 103 to the outside.

[0034] The water injection operation by the pump 104 generates a water current in the water intake area 100 that flows from the water intake pipe 102 through the dust filter 103 toward the outside of the dust filter 103, and this water current removes dust that has adhered to the outside of the dust filter 103. When a predetermined time has elapsed since the water injection operation of the pump 104 was started, the water injection valve 106 is closed and the operation of the pump 104 is stopped, thereby completing the operation of removing the dust that has adhered to the dust filter 103 (dust removal operation). In this way, by providing a structure that allows dust removal from the dust filter 103 by the water injection operation of the pump 104, dust can be removed from the dust filter 103 without stopping the power generation operation of the power generation mechanism 5.

[0035] In this embodiment, the dust removal operation of the dust removal filter 103 by the pump 104 is repeatedly started and stopped by measuring time, but the dust removal operation by the pump 104 may be started and stopped based on the flow rate measured by the flow meter 503 or the water pressure measured by the pressure sensor 504, for example. That is, when the flow rate measured by the flow meter 503 or the water pressure measured by the pressure sensor 504 falls below a predetermined value, the pump 104 is driven to start the dust removal operation. Thereafter, when the flow rate measured by the flow meter 503 or the water pressure measured by the pressure sensor 504 reaches a predetermined value, the pump 104 is stopped to stop the dust removal operation. Also, the dust removal operation by the pump 104 may be started and stopped based on the power or current value generated by the generator 502.

[0036] As described above, the hydroelectric power generation facility of this embodiment includes the water intake mechanism 1 that takes in water from the intake area 100 at a high altitude, and the power generation mechanism 5 that is installed at a lower position than the water intake mechanism 1. The power generation mechanism 5 generates power by utilizing the flow of water taken in by the water intake mechanism 1. The water intake mechanism 1 includes the water intake pipe 102 that draws up water from the water intake area 100 by siphon action, the water injection pipe 105 that is connected to an upper position of the water intake pipe 102, the pump 104 that injects water from the water intake area 100 into the water intake pipe 102 through the water injection pipe 105, and the dust filter 103 that covers the periphery of the water intake port 101 of the water intake pipe 102 that is submerged in the water intake area 100. The pump 104 is stopped during power generation by the power generation mechanism 5, and is driven when dust is removed by the dust filter 103.

[0037] 4. Intermittent operation during power generation When the water intake area 100 is configured to store water from a river or a pond, the amount of water supplied to the water intake area 100 may be less than the flow rate of water taken in by the water intake mechanism 1 and used for power generation in the power generation mechanism 5 depending on the season. At this time, as shown in Fig. 5, if the water level in the water intake area 100 drops and the water level falls below the lower end of the low water level electrode 192 of the water level gauge 109, the low water level electrode 192 and the earth electrode 193 are electrically opened in the water level gauge 109, so that the water level gauge 109 detects that the low water level position Wl has been reached. When the water level gauge 109 detects the low water level position Wl, the water supply valve 505 is closed to stop the supply of water to the power generation mechanism 5 in order to restore the water level in the water intake area 100, thereby stopping the power generation operation of the power generation mechanism 5 and the water intake operation of the water intake mechanism 1.

[0038] By stopping the water intake operation of the water intake mechanism 1, the water intake mechanism 1, the upstream water pipe 2, the dust removal tank 3, and the downstream water pipe 4 can each be maintained in a full water state, and the water level of the water intake area 100 rises. Then, as shown in Fig. 6, when the water level of the water intake area 100 reaches the lower end of the high water level electrode 191 of the water level gauge 109, the high water level electrode 191 and the earth electrode 193 are electrically connected in the water level gauge 109, so that the water level gauge 109 detects that the water level has reached the high water level position Wh. When the water level gauge 109 detects the high water level position Wh, the water supply valve 505 is opened to start the water intake operation of the water intake mechanism 1 and start supplying water to the power generation mechanism 5 in order to start the power generation operation of the power generation mechanism 5.

[0039] In the hydroelectric power generation facility of this embodiment, the water level gauge 109 detects whether the water level in the intake area 100 is at a low water level position Wl or a high water level position Wh, and controls the opening and closing operation of the water supply valve 505, thereby controlling the water intake operation in the water intake mechanism 1. As a result, the hydroelectric power generation facility of this embodiment can operate the power generation mechanism 5 intermittently, so that even when the flow rate of water supplied to the intake area 100 is low, the operation of the hydroelectric power generation facility is not completely stopped and power generation can be efficiently performed.

[0040] As described above, the hydroelectric power generation facility of this embodiment includes a water level gauge 109 that measures the water level in the intake area 100. When the water level gauge 109 measures that the water level in the intake area 100 is at a predetermined low water level position Wl, the supply of water to the power generation mechanism 5 is stopped. Then, after the supply of water to the power generation mechanism 5 is stopped, when the water level gauge 109 measures that the water level in the intake area 100 is at a predetermined high water level position Wh that is higher than the low water level position Wl, the supply of water to the power generation mechanism 5 is resumed.

[0041] 5. Operation when draining water Finally, the operation of each part when the power generation operation of the hydroelectric power generation facility is completely stopped and the water is drained will be described below. First, to stop the water intake operation of the water intake mechanism 1, the water supply valve 505 of the power generation mechanism 5 is closed and the air intake valve 108 is opened to ventilate the water intake pipe 102 of the water intake mechanism 1 with outside air through the air intake pipe 107, and the siphon action of the water intake mechanism 1 is released. This causes the water in the water intake pipe 102 to be drained toward the water intake area 100, and the water in the water intake mechanism 1 is drained.

[0042] Furthermore, by opening the drain valve 305 of the dust removal tank 3, the water stored in the tank body 301 is drained to the outside through the drain pipe 304. At this time, the water in the upstream water conduit 2 connected to the dust removal tank 3 also flows into the dust removal tank 3 and is drained to the outside through the tank body 301 and the drain pipe 304. As a result, the water in the upstream water conduit 2 and the dust removal tank 3 is drained. Furthermore, by opening the water supply valve 505 of the power generation mechanism 5, the water in the downstream water conduit 4 is drained to the drainage area 600 through the water turbine 501 and discharge pipe 6 of the power generation mechanism 5. As a result, the water in the downstream water conduit 4 and the power generation mechanism 5 is drained.

[0043] In this way, by completing the drainage of water from each part of the hydroelectric power generation facility, for example, dust can be removed and maintenance can be performed on the water intake mechanism 1 and the dust removal tank 3, and maintenance and repair can be performed on the power generation mechanism 5. Note that, although in this embodiment, the water supply valve 505 of the power generation mechanism 5 is closed and the air intake valve 108 of the water intake mechanism 1 is opened, the water supply valve 505 of the power generation mechanism 5 may be left open. In addition, regarding the timing of opening the air intake valve 108 and the timing of opening the drain valve 305, the drain valve 305 may be opened after the air intake valve 108, or the air intake valve 108 and the drain valve 305 may be opened simultaneously. [Industrial Applicability]

[0044] The present invention can be used in hydroelectric power generation facilities equipped with a water intake device using a siphon system. [Explanation of symbols]

[0045] 1 Water intake mechanism 2 Upstream water pipe (first water pipe) 3 Dust Removal Tank 4 Downstream water pipe (second water pipe) 5 Power generation mechanism 6 Outlet pipe 7. Control Unit 100 intake area 101 Water Intake 102 Water intake pipe 103 Dust removal filter 104 Pump 105 Water injection pipe 106 Water Injection Valve 107 Intake pipe 108 Intake valve 109 Water level gauge 121 Vertical extension section 122 Horizontal extension section 130 Case 131 Opening 132 Screen material (filter part) 191 High water level electrode 192 Low water level electrode 193 Earth Electrode 194 Protection tube 301 Tank body 302 Exhaust pipe 303 Exhaust valve 304 Drain pipe 305 Drain valve 306 Safety valve 501 Waterwheel 502 Generator 503 Flow meter 504 Pressure Sensor 505 Water supply valve 600 drainage area Wh High water level position Wl Low water level position

Claims

1. A hydroelectric power generation facility comprising a water intake mechanism that takes in water from a high-altitude water intake area and a power generation mechanism that is installed at a lower level than the water intake mechanism, the power generation mechanism generating power by utilizing the flow of water taken in by the water intake mechanism, the water intake mechanism comprises a water intake pipe that draws up water from the water intake area by siphon action, a water injection pipe connected to an upper position of the water intake pipe, a pump that injects water from the water intake area into the water intake pipe through the water injection pipe, and a dust filter that covers the periphery of the water intake port of the water intake pipe that is submerged in the water intake area; The hydroelectric power generation facility, characterized in that the pump is stopped while the power generation mechanism is generating electricity, and the pump is driven when the dust removal filter is removing dust.

2. 2. The hydroelectric power generation facility according to claim 1, further comprising a dust removal tank for temporarily storing the water taken in by the water intake mechanism and supplying the water to the power generation mechanism.

3. The hydroelectric power generation facility according to claim 1 or claim 2, characterized in that the water intake mechanism is equipped with a water level gauge that measures the water level in the water intake area, and when the water level gauge measures that the water level in the water intake area is at a predetermined low water level position, the water supply to the power generation mechanism is stopped.

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