A dual-purpose power station for offshore water storage and tidal water storage and its operating method

Abstract

The present invention relates to an offshore water storage and tidal water storage dual-purpose power station and an operating method thereof, comprising a water storage dam arranged facing the tidal water flow, a water reservoir being provided on the other side of the water storage dam, the bottom of the reservoir being connected to a turbine via a guide channel, and the turbine and the rotor of the generator set being coupled to rotate synchronously, the water storage dam being provided with a plurality of water storage inlets for tidal water flow to flow into the reservoir at intervals along its length, a gate being provided on the back side of the water storage dam that can be raised and lowered to adjust the opening and closing of the water storage inlets, and a control room being provided next to the reservoir, the offshore water storage and tidal water storage dual-purpose power station utilizing seawater brought by the high tide and storing it for power generation, having an ingenious structure, reasonable resource utilization, and good power generation effect.

Description

Technical Field

[0001] The invention relates to a dual-purpose power station for offshore water storage and tidal water storage and an operating method thereof. Background Art

[0002] Energy is a major issue in modern society. In addition to mineral-based energy sources like coal and oil, nuclear energy has become widely used. This has led to pollution and safety concerns, prompting a surge in attention to clean energy. River hydropower is popular, but large rivers are rare. Furthermore, green energy sources like solar and wind power are being actively developed. However, power stations that harness ocean tides are relatively rare. Existing power stations generally utilize tidal potential energy, resulting in short-term sustainable power generation and low power generation. Furthermore, increasing tidal range to increase potential energy is costly, hindering the development of green energy. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a dual-purpose offshore water storage and tidal water storage power station and its working method, which not only has a reasonable structure, but also has reasonable resource utilization and good power generation effect.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: a dual-purpose offshore water storage and tidal water storage power station, including a water storage dam facing the tidal water flow, a water reservoir is provided on the other side of the water storage dam, the bottom reservoir of the water storage is connected to the turbine through a guide channel, and rotates synchronously with the rotor coupling of the turbine and the generator set, the water storage dam is provided with a number of water storage outlets for tidal water to flow into the water storage reservoir at intervals along its length, the back side of the water storage dam is provided with a gate that can be raised and lowered to adjust the opening and closing of the water storage outlet, and a control room is provided on the side of the water storage reservoir.

[0005] Furthermore, the water storage dam is arranged along the extending direction of the coast, and a transition dam is provided near the bottom of the water storage dam facing the sea water and extending obliquely downward toward the sea water side.

[0006] Furthermore, a sewage outlet is provided on the side of the water storage bottom reservoir away from the diversion channel, and sewage is discharged through a sewage pipe at the bottom of the sewage outlet.

[0007] Furthermore, the sewage pipe is provided with auger blades, and the sludge is discharged by driving the motor at the end.

[0008] Furthermore, the bottom of the reservoir is tilted, and the horizontal position of the sewage outlet is lower than the horizontal position of the diversion outlet at the top of the diversion channel.

[0009] Furthermore, a normally open water inlet is provided on the side of the water storage port at both ends. The height of the normally open water inlet is equal to the height of the top of the water storage port, and a filter layer is provided in the normally open water inlet and the water storage port.

[0010] Furthermore, a hydraulic cylinder for driving the gate to rise and fall is provided at the top of the water storage dam, and the hydraulic cylinder is electrically connected to the control room.

[0011] Furthermore, a number of water storage cylinders are provided in the sea water facing the water storage dam to store water naturally. The side of the water storage cylinder is opened and provided with a water inlet gate that can be opened and closed. A filter layer is provided on the outside of the water inlet gate. A through port is opened at the bottom of the water storage cylinder and is connected to a water supply channel through the through port. The water supply channel is at the same level as the diversion channel and is connected to the same. A valve is provided in the water supply channel.

[0012] A working method of a dual-purpose offshore water storage and tidal water storage power station is carried out according to the following steps: first, at high tide, the tide rushes into the water storage port along the transition dam and enters the water storage reservoir. When the tide reaches its highest point, that is, the water storage in the reservoir reaches its highest point, the hydraulic cylinder is driven by the control room to make the gate descend and close the water storage port. Then, by opening the control valve in the diversion port, the water flow rushes into the diversion channel under the action of pressure and impacts the blades of the turbine, causing them to rotate, thereby driving the rotor of the generator set to rotate. The rotor rotates and cuts the magnetic coil of the generator stator to generate electricity, completing power generation. At the same time, synchronous water replenishment can be completed through the normally open water inlet to ensure continuous power generation during high tide.

[0013] Compared with the existing technology, the present invention has the following beneficial effects: the dual-purpose offshore water storage and tidal water storage power station utilizes the seawater brought by the high tide and stores it for power generation. It has an ingenious structure and, through the design of the transition dam, during high tide, the tide flows obliquely upward along the transition dam into the water storage port, and the sand and gravel brought along can settle during the climbing process along the transition dam to reduce the pressure on the filter layer. The synchronous water replenishment work can be completed through the normally open water inlet to ensure continuous power generation during high tide, reasonable resource utilization, and good power generation effect.

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of an embodiment of the present invention;

[0016] Figure 2 A top view of the structure of an embodiment of the present invention;

[0017] Figure 3 It is a schematic diagram of the front side of the water storage dam in an embodiment of the present invention.

[0018] Figure 4 Schematic diagram of the water storage cylinder structure and working state in an embodiment of the present invention.

[0019] In the figure: 1- water storage dam, 2- water storage reservoir, 3- diversion channel, 4- turbine, 5- generator set, 6- water storage port, 7- gate, 8- control room, 9- transition dam, 10- sewage outlet, 11- sewage pipe, 12- auger blade, 13- motor, 14- diversion port, 15- normally open water inlet, 16- hydraulic cylinder, 17- filter layer, 18- water storage cylinder, 19- water inlet gate, 20- port, 21- water supply channel. DETAILED DESCRIPTION

[0020] In order to make the above features and advantages of the present invention more clearly understood, embodiments are given below with reference to the accompanying drawings for detailed description.

[0021] like Figures 1 to 4 As shown, a dual-purpose offshore water storage and tidal water storage power station includes a water storage dam 1 arranged facing the tidal water flow, a water reservoir 2 is provided on the other side of the water storage dam, the bottom of the water storage reservoir is connected to a turbine 4 through a guide channel 3, and the turbine and the generator set 5 rotate synchronously through the rotor coupling, the water storage dam is provided with a number of water storage inlets 6 for tidal water to flow into the water storage reservoir at intervals along its length, a gate 7 that can be raised and lowered to adjust the opening and closing of the water storage inlet is provided on the back of the water storage dam, and a control room 8 is provided next to the reservoir.

[0022] In an embodiment of the present invention, the water storage dam is arranged along the extension direction of the coast, and a transition dam 9 is extended obliquely downward toward the sea water side near the bottom of the water storage dam. During high tide, the tide flows obliquely upward along the transition dam into the water storage port, and the sand and gravel it carries with it can settle during the climbing process along the transition dam to reduce the pressure of the filter layer.

[0023] In the embodiment of the present invention, a sewage outlet 10 is opened at the bottom of the reservoir away from the diversion channel, and the bottom end of the sewage outlet discharges sewage through a sewage pipe 11.

[0024] In the embodiment of the present invention, the sewage pipe is provided with an auger blade 12, and is driven by a motor 13 at the end to discharge the sludge, thereby facilitating the discharge of mud, dirt, sand and gravel stored in the reservoir, and can also be used as a drainage channel when necessary.

[0025] In an embodiment of the present invention, the bottom of the reservoir is tilted, and the horizontal position of the sewage outlet is lower than the horizontal position of the diversion port 14 at the top of the diversion channel. Both the diversion port and the sewage outlet are provided with control valves electrically connected to the control room.

[0026] In an embodiment of the present invention, a normally open water inlet 15 is further provided on the side of the water storage port at both ends. The height of the normally open water inlet is equal to the height of the top of the water storage port, that is, when the gate closes the water storage port, water can still be replenished into the reservoir at the highest point of high tide through the normally open water inlet, and a filter layer 17 is provided in both the normally open water inlet and the water storage port.

[0027] In the embodiment of the present invention, a hydraulic cylinder 16 for driving the gate to rise and fall is provided at the top of the water storage dam, and the hydraulic cylinder is electrically connected to the control room.

[0028] In an embodiment of the present invention, a plurality of water storage cylinders 18 are provided in the sea water facing the water storage dam, the side of the water storage cylinder is opened and provided with an openable and closable water inlet gate 19, a filter layer consistent with the water storage port is provided outside the water inlet gate, a through port 20 is provided at the bottom of the water storage cylinder and connected to a water supply channel 21 through the through port, the water supply channel is at the same level as the diversion channel and is communicated with the water supply channel, a valve is provided in the water supply channel, and the valve is closed to prevent water in the reservoir from flowing back into the water supply channel, the water storage cylinder opens the water inlet gate to store water at high tide, and closes the water inlet gate after it is full, and the diversion port can be closed by the valve when needed, and the valve of the water supply channel is opened, and the water stored in multiple water storage cylinders flows back into the water supply channel at the same time, rushes into the diversion channel and drives the turbine to rotate continuously, so as to continuously generate electricity, extend the power generation time and increase the power generation amount.

[0029] A working method of a dual-purpose offshore water storage and tidal water storage power station is carried out in the following steps: first, at high tide, the tide rushes into the water storage port along the transition dam and enters the water storage reservoir; when the tide reaches its highest point, that is, when the water storage in the reservoir reaches its highest point, the hydraulic cylinder is driven by the control room to make the gate descend and close the water storage port; then, by opening the control valve in the diversion port, the water flow rushes into the diversion channel under the action of pressure and impacts the blades of the turbine, causing them to rotate, thereby driving the rotor of the generator set to rotate, and the rotor rotates and cuts the generator stator magnetic coil to generate electricity, completing power generation; at the same time, synchronous water replenishment can be completed through the normally open water inlet, ensuring continuous power generation during high tide.

[0030] When almost all the water stored in the reservoir is used for power generation, the diversion port can be closed through the valve, and the valve of the water supply channel can be opened. The water stored in multiple water storage cylinders will flow back into the water supply channel at the same time, rush into the diversion channel and drive the turbine to rotate continuously, so as to continuously generate electricity, extend the power generation time and increase the power generation amount.

[0031] The present invention is not limited to the above-described preferred embodiment. Based on the teachings of this invention, anyone can devise various other forms of dual-purpose offshore and tidal storage power plants and their operating methods. All equivalent variations and modifications made within the scope of the present invention are intended to fall within the scope of this invention.

Claims

1. A dual-purpose offshore water storage and tidal water storage power station, characterized by: It includes a water storage dam facing the tidal water flow, a water reservoir is provided on the other side of the water storage dam, the bottom of the reservoir is connected to the turbine via a diversion channel, and the turbine rotates synchronously with the rotor coupling of the generator set through the turbine. The water storage dam is provided with a plurality of water storage inlets for tidal water to flow into the reservoir at intervals along its length, a gate that can be raised and lowered to adjust the opening and closing of the water storage inlets is provided on the back of the water storage dam, and a control room is provided beside the reservoir. The water storage dam is arranged along the coast, and a transition dam is provided near the bottom of the water storage dam on the side facing the seawater and extends obliquely downward toward the seawater side; A normally open water inlet is provided on the side of the water storage port at both ends. The height of the normally open water inlet is equal to the height of the top of the water storage port, and a filter layer is provided in both the normally open water inlet and the water storage port. A plurality of water storage cylinders are arranged in the seawater facing the water storage dam, and the side of the water storage cylinder is opened and provided with an openable and closable water inlet gate. The outside of the water inlet gate is provided with a filter layer. A through hole is opened at the bottom of the water storage cylinder and is connected to a water supply channel through the through hole. The water supply channel is at the same level as the diversion channel and is connected. A valve is provided in the water supply channel; A sewage outlet is provided at the bottom of the reservoir away from the diversion channel, and sewage is discharged through a sewage pipe at the bottom of the sewage outlet; The sewage discharge pipe is provided with auger blades, and is driven by a motor at the end to discharge the sludge.

2. The offshore and tidal water storage dual-purpose power station according to claim 1, characterized in that: The bottom of the water reservoir is tilted, and the horizontal position of the sewage outlet is lower than the horizontal position of the diversion outlet at the top of the diversion channel.

3. The offshore and tidal water storage dual-purpose power station according to claim 1, characterized in that: A hydraulic cylinder for driving the gate to rise and fall is provided at the top of the water storage dam, and the hydraulic cylinder is electrically connected to the control room.

4. A method for operating a dual-purpose offshore water storage and tidal water storage power station, characterized in that: A dual-purpose offshore water storage and tidal water storage power station as described in any one of claims 1 to 3 is used, and the following steps are followed: first, at high tide, the tide rushes into the water storage port along the transition dam and into the reservoir. When the tide reaches its highest point, that is, when the water storage in the reservoir reaches its highest point, the hydraulic cylinder is driven by the control room to move the gate downward to close the water storage port. Then, by opening the control valve in the diversion port, the water flow rushes into the diversion channel under pressure and impacts the blades of the turbine, causing them to rotate, thereby driving the rotor of the generator set to rotate, and the rotor rotates and cuts the generator stator magnetic coil to generate electricity, completing power generation. At the same time, synchronous water replenishment can be completed through the normally open water inlet to ensure continuous power generation during high tide.

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