Sea wave compressed air energy storage power generation system

Abstract

The invention discloses an array type compressed air energy storage power generation system based on sea wave energy, and belongs to the field of renewable energy utilization. According to the system, the direct connection type air compression units with the floating buckets arranged below and the air compression pumps arranged above are arranged in an array mode, and unstable sea wave energy can be effectively collected. Sea waves push the floating barrel to rise to directly drive the piston of the compression pump to move upwards to compress air and store the air in the high-pressure air storage tank. High-pressure air in the air storage tank pushes the gas turbine to operate and further drives the generator to generate electricity. The ocean wave energy power generation device solves the problems of ocean wave energy collection and stable output, has the advantages of high energy collection efficiency, stable power generation, high conversion efficiency, environmental protection and sustainability, and provides an innovative and efficient solution for ocean wave energy power generation.

Description

Technical Field

[0001] The present invention relates to the field of renewable energy utilization, and particularly to a wave compression air energy storage power generation system. Background Art

[0002] With the continuous growth of the demand for clean energy, wave energy, as a renewable energy source with huge reserves, has attracted much attention. However, wave energy has a high degree of instability and intermittency, and traditional wave power generation technologies are difficult to efficiently collect and convert this fragmented energy, resulting in low power generation efficiency and unstable power supply. Existing wave power generation devices have many problems in the aspects of energy capture, storage, and conversion. For example, the energy capture mechanism cannot adapt to the changing characteristics of waves, the energy storage method is single and ineffective, and the energy conversion equipment has low efficiency, etc., which seriously restricts the large-scale development and utilization of wave energy. Therefore, there is an urgent need for an innovative technical solution to solve these problems and achieve the efficient and stable utilization of wave energy. Summary of the Invention

[0003] 1. Object of the Invention: The present invention aims to provide an array type compressed air energy storage power generation system based on wave energy, solve the problems of difficult collection of wave energy, unstable energy, and low power generation efficiency, and achieve the efficient and stable conversion of wave energy into electrical energy.

[0004] 2. Technical Solution: ◦ Compressed Air Unit Array: An array composed of multiple compressed air units with floating barrels at the bottom and compressed air pumps directly connected above is distributed in the wave area. The floating barrels are made of lightweight and high-strength carbon fiber epoxy composite materials and are connected to the compressed air pumps through rigid connecting components with quick couplings. The diameter of the compressed air pump is designed according to the size of the floating barrel and the pressure resistance value of the gas storage tank. When the wave surges and pushes the floating barrel to rise, the piston moves upward, the intake valve of the compressed air pump closes, and the outlet valve opens, and the air is compressed and transported to the high-pressure gas storage tank; when the floating barrel descends, the piston falls back, and the intake valve opens to inhale air. Multiple compressed air units work together to expand the energy collection range, reduce energy transfer losses, and improve energy capture efficiency.

[0005] ◦ High-Pressure Gas Storage Tank: Connected to the directly connected compressed air unit array, it is made of high-strength alloy steel and has good airtightness and high-pressure resistance performance. A pressure monitoring device is installed on the tank to feedback the pressure signal to the control system in real time. The control system controls the height of the compressed air unit array according to the pressure signal to maintain the pressure stability in the gas storage tank. When the air pressure in the gas storage tank is too high or the wind and waves are too large, the height of the compressed air system is increased; when the air pressure in the gas storage tank is too low or the wind and waves are too small, the height of the compressed air system is decreased to ensure stable energy storage and supply.

[0006] ◦ High-Efficiency Gas Turbine: Connected to the high-pressure gas storage tank, it is driven by the high-pressure air output from the high-pressure gas storage tank.

[0007] ◦ Generator: connected to a high-efficiency gas turbine and driven by the gas turbine to generate electricity.

[0008] ◦ Foundation support structure: The direct-connected compressor unit array, high-pressure gas storage tank, gas turbine and generator are all installed on the foundation support structure. The foundation support structure is fixed to the seabed or coast, using concrete pile foundation or steel structure support, which can withstand the weight of the system and the impact of waves. The height of the compressor unit array and the buoy can be electrically adjusted to adapt to different tidal heights and wind and wave sizes.

[0009] 3. Beneficial effects: ◦ Efficient energy capture: The direct-connected air compressor unit is combined with the array layout to directly utilize the vertical movement of the waves, reduce the loss in the energy transfer link, greatly improve the efficiency of wave energy capture, and effectively collect fragmented wave energy.

[0010] ◦ Stable energy storage and output: High-pressure gas tanks store compressed air to solve the problem of unstable wave energy. Together with control systems and pressure monitoring devices, they achieve stable energy supply, ensure continuous and stable power generation, and output electricity that meets grid requirements.

[0011] ◦ High energy conversion efficiency: High-efficiency gas turbines significantly improve energy conversion efficiency and enhance the efficiency of the entire power generation system.

[0012] ◦ Strong adaptability: The overall structure of the system and the design of each component fully consider the complexity of the wave environment, and can adapt to the wave conditions in different sea areas. By adjusting the height of the compressed air unit array, the effective utilization of different wave energies can be achieved.

[0013] ◦ Environmentally friendly and sustainable: Using ocean waves as a clean energy source to generate electricity, there is no pollution in the whole process, which is in line with the concept of sustainable development and helps promote the transformation of energy structure to green and low-carbon. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 : Schematic diagram of the overall structure of the wave compressed air energy storage power generation system Figure 2 :Schematic diagram of the compressed air unit structure Figure 3 : Schematic diagram of high-efficiency gas turbine structure Notes on the attached figures: 1 Compressed air unit array. 2 High-pressure air storage tank. 3 Gas turbine. 4 Generator. 5 Inlet check valve. 6 Connection pipe between high-pressure outlet check valve and high-pressure air storage tank. 7 Compressed air pump bracket. 8 Compressed air piston. 9 Piston connecting rod. 10 Floating barrel. 11 Floating barrel limit stop. DETAILED DESCRIPTION

[0015] 1. System installation: Install the basic support structure in the selected sea wave area according to the design requirements. In shallow sea areas, concrete pile foundations can be used. Drive the piles into the seabed to a certain depth to ensure the stability of the foundation, and the height of the air compression system is adjustable. Install the direct-connected air compression units in an array layout on the basic support structure, connect the floating barrels and the air compression pumps, and check the firmness of the connection and the flexibility of the piston movement. Connect the pipelines of the air compression units and the high-pressure gas storage tanks, install pressure monitoring devices and control valves to ensure good pipeline sealing and reliable connection. Connect the high-efficiency gas turbine and the high-pressure gas storage tank through pipelines, and install a voltage stabilizing device to ensure the stable air pressure entering the gas turbine. Finally, connect the gas turbine and the generator through a coupling or a gearbox to complete the installation of the entire system.

[0016] 2. Energy collection and storage: The sea waves act on the floating barrels. As the floating barrels rise with the sea waves, they drive the pistons of the air compression pumps to compress the air upward. The compressed air enters the high-pressure gas storage tank. The pressure monitoring device monitors the pressure in the gas storage tank in real time and feeds it back to the control system. When the pressure reaches the set upper limit, the control system controls the air compression unit to reduce the working frequency or suspend working; when the pressure is lower than the set lower limit, the control system controls the air compression unit to increase the working frequency or start working to maintain the pressure in the gas storage tank within a reasonable range.

[0017] 3. Power generation process: When power generation is required, open the valve between the high-pressure gas storage tank and the gas turbine. The high-pressure air enters the gas turbine after passing through the voltage stabilizing device, drives the gas turbine to operate, and drives the generator to generate electricity. The electric energy output by the generator is processed by the voltage and frequency regulating device to meet the grid connection standard, and finally connected to the grid to supply power to users.

[0018] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An array type compressed gas energy storage power generation system based on wave energy, characterized in that: include: The air compression unit array is composed of a plurality of air compression units with floating barrels at the bottom and air compressors at the top. The floating barrels move vertically under the action of the waves, directly driving the piston of the air compressor to move accordingly to achieve air compression. A high-pressure air storage tank, connected to the air compression unit array, for storing compressed high-pressure air; A gas turbine connected to the high-pressure gas storage tank and driven by high-pressure air; The generator is connected to the gas turbine and driven by the gas turbine to generate electricity.

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