An air compression storage system for power generation

Abstract

The present invention is an air compression storage system for power generation, including an air filter device, the air filter device is connected to a compressor through a universal pipeline, the compressor is connected to a cooler, the other side of the cooler is connected to an expansion liquefier through a universal pipeline, the other side of the expansion liquefier is connected to a liquefied air storage device through a universal pipeline, the outlet of the liquefied air storage device is connected to a gasification converter through a universal pipeline, the other side of the gasification converter is an air pump, and the other side of the air pump is connected to a power generation device through a universal pipeline. In summary, the outer layer of the universal pipeline is provided with a vacuum layer, and a valve is provided in the middle of each universal pipeline. The valve, compressor, cooler, expansion liquefier, gasification converter, and air pump are all controlled by a central controller. By first liquefying and storing the air in the liquefied air storage device, and then starting the air compression and liquefaction synchronously when it is used later, the demand for real-time power generation can be met, and the temporary power generation demand when the environment is poor can also be met.

Description

Technical Field

[0001] The present invention belongs to the technical field of air compression storage, and in particular relates to an air compression storage system for power generation. Background Art

[0002] Air compression storage is a technology that stores air in a compressed form so that it can be used when needed. When the grid load is low, excess air is stored and released when the grid load is peak to achieve the effect of peak shaving and valley filling. It can be integrated with renewable energy to improve the utilization rate of renewable energy and grid accessibility, and can also improve energy utilization and reduce environmental pollution.

[0003] When using air-driven power generation equipment to generate electricity, air energy is required. Common air compression equipment used for power generation lacks storage function. Common hydraulic air storage equipment cannot complete storage and use in parallel. When using liquid air, it cannot be adjusted according to demand, resulting in poor stability of power generation.

[0004] In summary, the prior art has the problems of being unable to generate electricity in an emergency due to lack or insufficient storage function and poor power generation stability due to inability to control air flow. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of the present invention to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] Therefore, the object of the present invention is to provide an air compression storage system for power generation, which can solve the problems of the prior art that the power generation cannot be performed in an emergency due to the lack of or insufficient storage function and the power generation stability is poor due to the inability to control the air flow. The present invention provides an air compression storage system for power generation, which includes an air filter device, the air filter device is connected to a compressor through a common pipeline, the compressor is connected to a cooler, the other side of the cooler is connected to an expansion liquefier through a common pipeline, the other side of the expansion liquefier is connected to a liquefied air storage device through a common pipeline, the outlet of the liquefied air storage device is connected to a gasification converter through a common pipeline, the other side of the gasification converter is an air pump, and the other side of the air pump is connected to a power generation device through a common pipeline. In summary, the outer layer of the common pipeline is provided with a vacuum layer, and a valve is provided in the middle of each common pipeline. The valve, the compressor, the cooler, the expansion liquefier, the gasification converter, and the air pump are all controlled by a central controller.

[0007] Optionally, the valve between the air filter device and the compressor is a first valve, the valve between the cooler and the expansion liquefier is a second valve, the valve between the expansion liquefier and the liquefied air storage device is a third valve, the valve between the liquefied air storage device and the gasification converter is a flow regulating valve, and the valve between the air pump and the power generation equipment is a fourth valve.

[0008] Optionally, a rubber sealing block is provided on the top of the air filter device, and the inner sealing block of the rubber sealing block is adapted to the notch on the top of the air filter device. The lower part of the rubber sealing block is provided with a fiber filter layer, an activated carbon filter layer and an electrostatic filter layer from left to right that are adapted to the interior of the air filter device.

[0009] Optionally, an inlet pipe is arranged on the upper left side of the air filter device, a paper filter layer is on the left side of the inlet pipe, an inlet valve is on the right side of the paper filter layer, and the inlet valve is controlled by a central controller.

[0010] Optionally, the liquefied air storage device is a square storage barrel with the left side inclined toward the right side. The liquefied air storage device comprises, from the inside to the outside, a corrosion-resistant inner liner, a shock-absorbing layer, a main vacuum layer, and an outer shell. The upper left side of the liquefied air storage device is a liquefied air inlet, and a fifth valve is provided above the liquefied air inlet. The lower right side of the liquefied air storage device is connected to the flow regulating valve, and the other side of the flow regulating valve is a common pipeline.

[0011] Optionally, a temperature sensor is provided at the top of the corrosion-resistant inner tank, and a pressure sensor is provided at the bottom, and both the temperature sensor and the pressure sensor are controlled by a central controller.

[0012] By adopting the above technical solution, this case uses an air filter device to filter the air to ensure the purity of the air and avoid subsequent blockage of the channel to affect the normal power generation of this system. A compressor, a cooler, and an expansion liquefier are used to liquefy the air and store it in a liquefied air storage device. The liquefied air storage device uses a setting with the left side being right-sloped. When the liquefied air flows in, it will flow down along the inclined side to avoid the liquefied air being affected by gravity and impacting the bottom, causing damage to the bottom and affecting the subsequent liquefied gas storage effect. A flow regulating valve is used to control the flow of the liquefied gas, and then the amount of gas in the gasification converter is controlled to ensure the stability of power generation. The air pump is used for pressurization to make the output air pressure stable.

[0013] In summary, the present invention includes at least one of the following beneficial effects: The present invention filters the air through an air filter device to prevent impurities in the air from affecting the normal operation of the system and further affecting the power generation effect. The universal pipeline has a vacuum layer to avoid heat loss in the whole process and affect the subsequent power generation effect.

[0014] The present invention controls the flow of liquefied gas through a flow regulating valve, thereby controlling the amount of gas in the gasification converter, thereby ensuring the stability of power generation, and the air pump is used for pressurization to stabilize the output air pressure.

[0015] The present invention ensures the stability of power generation by adopting the method of storing first and then using, and storing while using through the device, and can meet the demand for power generation in emergency situations caused by lack or insufficient storage function. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 The overall system flow chart of an air compression storage system for power generation of the present invention; Figure 2 A schematic diagram of a filtering structure of an air compression storage system for power generation according to the present invention; Figure 3 A schematic diagram of a liquefied storage structure of an air compression storage system for power generation according to the present invention; Figure 4 A schematic diagram of a control system of an air compression storage system for power generation according to the present invention; List of illustrations: 1. Air filter device; 2. Compressor; 3. Cooler; 4. Expansion liquefier; 5. Liquefied air storage device; 6. Gasification converter; 7. Air pump; 8. First valve; 9. Second valve; 10. Third valve; 11. Universal pipeline; 12. Flow regulating valve; 13. Fourth valve; 14. Vacuum layer; 15. Rubber sealing block; 16. Electrostatic filter layer; 17. Fiber filter layer; 18. Activated carbon filter layer; 19. Paper filter layer; 20. Inlet valve; 21. Inlet pipe; 22. Liquefied air inlet; 23. Fifth valve; 24. Main vacuum layer; 25. Outer shell; 26. Temperature sensor; 27. Shock-absorbing layer; 28. Corrosion-resistant liner; 29. ​​Pressure sensor; 30. Liquefied air outlet. Implementation

[0018] The following is combined with Figure 1-4 The present invention is described in further detail.

[0019] Embodiment 1, refer to Figure 1-4 In this embodiment, in order to solve the problem that the existing technology cannot generate electricity in an emergency due to lack or insufficient storage function and cannot control the air flow rate, the power generation stability is poor. The present invention discloses an air compression storage system for power generation, including an air filter device 1, the air filter device 1 is connected to the compressor 2 through a universal pipeline 11, the compressor 2 is connected to the cooler 3, the other side of the cooler 3 is connected to the expansion liquefier 4 through a universal pipeline 11, the other side of the expansion liquefier 4 is connected to the liquefied air storage device 5 through a universal pipeline 11, the outlet of the liquefied air storage device 5 is connected to the gasification converter 6 through a universal pipeline 11, the other side of the gasification converter 6 is an air pump 7, and the other side of the air pump 7 is connected to the power generation equipment through a universal pipeline 11. In summary, the outer layer of the universal pipeline 11 is provided with a vacuum layer 14, and a valve is provided in the middle of each universal pipeline 11. The valve, compressor 2, cooler 3, expansion liquefier 4, gasification converter 6, and air pump 7 are all controlled by a central controller.

[0020] The central controller controls valves, compressor 2, cooler 3, expansion liquefier 4, gasification converter 6, and air pump 7 so that the system can be adjusted according to demand. The air is liquefied by the air filter 1, compressor 2, cooler 3, expansion liquefier 4 and uniformly collected in the liquefied air storage device 5, and then uniformly gasified into air by the gasification converter 6 and air pump 7, thereby ensuring the stability of the air supply and the stability of the power generation of the system. A vacuum layer 14 is arranged outside the universal pipeline 11 to avoid the loss of energy during the transmission process and ensure the use effect of the system. Because the liquefied air in the liquefied air storage device 5 of the entire system is in a state of continuous replenishment, the liquefied air storage device 5 can also be filled with liquefied gas when no power generation is performed, in preparation for subsequent emergency situations.

[0021] The valve between the air filter device 1 and the compressor 2 is the first valve 8, the valve between the cooler 3 and the expansion liquefier 4 is the second valve 9, the valve between the expansion liquefier 4 and the liquefied air storage device 5 is the third valve 10, the valve between the liquefied air storage device 5 and the gasification converter 6 is the flow regulating valve 12, and the valve between the air pump 7 and the power generation equipment is the fourth valve 13. A rubber sealing block 15 is arranged on the top of the air filter device 1, and the inner sealing block of the rubber sealing block 15 is matched with the notch on the top of the air filter device 1. The lower part of the rubber sealing block 15 is provided with a fiber filter layer 17, an activated carbon filter layer 18 and an electrostatic filter layer 16 that are matched with the inside of the air filter device 1 from left to right. An inlet pipe 21 is arranged on the upper left side of the air filter device 1, and a paper filter layer 19 is on the left side of the inlet pipe 21, and an inlet valve 20 is on the right side of the paper filter layer 19. The inlet valve 20 is controlled by a central controller.

[0022] The flow rate of liquid air is adjusted by the flow regulating valve 12, so that the device can be flexibly adjusted according to actual needs. The setting of the rubber blocking block 15 can clean or replace the internal fiber filter layer 17, the activated carbon filter layer 18 and the electrostatic filter layer 16. The paper filter layer 19 is the first filter. The impurities are relatively more than the internal filter layer. It is arranged on the left side of the inlet pipe 21 for easy replacement in time. The whole valve is controlled by a central controller, which is highly flexible.

[0023] The liquefied air storage device 5 is a square storage barrel with the left side tilted towards the right side. The liquefied air storage device 5 comprises, from the inside to the outside, a corrosion-resistant inner liner 28, a shock-absorbing layer 27, a main vacuum layer 24, and an outer shell 25. The upper left side of the liquefied air storage device 5 is a liquefied air inlet 22, and a fifth valve 23 is arranged above the liquefied air inlet 22. The lower right side of the liquefied air storage device 5 is connected to a flow regulating valve 12, and the other side of the flow regulating valve 12 is a universal pipeline 11. A temperature sensor 26 is arranged at the top of the corrosion-resistant inner liner 28, and a pressure sensor 29 is arranged at the bottom. Both the temperature sensor 26 and the pressure sensor 29 are controlled by a central controller.

[0024] The impact of unnecessary collisions on the internal liquefied air can be alleviated by the shock-absorbing layer 27. The shock-absorbing layer can be a shock-absorbing and heat-insulating sponge or a shock-absorbing spring layer. The main vacuum layer 24 is mainly used to isolate the temperature to prevent the external temperature from being too high or too low from affecting the internal liquefied air. The temperature sensor 26 and the pressure sensor 29 are respectively used to detect the temperature and pressure inside the liquefied air storage device 5 to ensure the stability of the liquefied air storage.

[0025] Specific implementation principle: When using the present invention, the central controller will first open the inlet valve 20, and the air will pass through the paper filter layer 19 to filter out obvious impurities. The paper filter layer 19 is a visual window, and the staff can observe the condition of the paper filter layer 19 and replace the paper filter layer 19 in time, generally once a week. The air passing through the paper filter layer 19 will pass through the fiber filter layer 17 to filter small particles, and then pass through the activated carbon filter layer 18 to filter odors and harmful gases, and finally pass through the electrostatic filter layer 16 to adsorb tiny particles. After the filtration, the gas reaches the compressor 2 and the cooler 3. After the air is repeatedly compressed and cooled, the central controller controls the opening of the second valve, and the air is compressed in the expander and liquefied The expansion liquefier 4 composed of the expansion liquefier 4 expands and liquefies as the third valve 10 and the fifth valve 23 are opened, through the liquefied air inlet 22 and along the side inclined plate into the corrosion-resistant inner tank 28. When it is to be used, the preset value is input according to the demand, and the flow regulating valve 12 controls the flow. The liquid air enters the gasification converter 6 for gasification and is pressurized by the air pump 7 for power generation. The central controller monitors the data of the temperature sensor 26 and the pressure sensor 29 in real time, and automatically controls the entire system to ensure that the value of the pressure sensor 29 is in a fixed range, that is, to ensure that the reserve amount of liquefied air in the liquefied air storage device is sufficient. When the data of the temperature sensor 26 and the pressure sensor 29 are abnormal, the central controller will stop operating.

[0026] The above are all preferred embodiments of the present invention, and the protection scope of the invention is not limited thereby. Therefore, any equivalent changes made according to the structure, shape, principle and method of the present invention should be included in the protection scope of the present invention.

Claims

1. An air compression storage system for power generation, characterized in that: The invention comprises an air filter device (1), wherein the air filter device (1) is connected to a compressor (2) via a universal pipeline (11), the compressor (2) is connected to a cooler (3), the other side of the cooler (3) is connected to an expansion liquefier (4) via a universal pipeline (11), the other side of the expansion liquefier (4) is connected to a liquefied air storage device (5) via a universal pipeline (11), the outlet of the liquefied air storage device (5) is connected to a gasification converter (6) via a universal pipeline (11), the other side of the gasification converter (6) is an air pump (7), the other side of the air pump (7) is connected to a power generation device via a universal pipeline (11), in summary, the outer layer of the universal pipeline (11) is provided with a vacuum layer (14), a valve is provided in the middle of each universal pipeline (11), and the valve, the compressor (2), the cooler (3), the expansion liquefier (4), the gasification converter (6), and the air pump (7) are all controlled by a central controller.

2. An air compression storage system for power generation according to claim 1, characterized in that: The valve between the air filter device (1) and the compressor (2) is a first valve (8), the valve between the cooler (3) and the expansion liquefier (4) is a second valve (9), the valve between the expansion liquefier (4) and the liquefied air storage device (5) is a third valve (10), the valve between the liquefied air storage device (5) and the gasification converter (6) is a flow regulating valve (12), and the valve between the air pump (7) and the power generation device is a fourth valve (13).

3. The air compression storage system for power generation according to claim 1, characterized in that: A rubber blocking block (15) is arranged at the top of the air filter device (1), the inner blocking block of the rubber blocking block (15) is matched with the notch at the top of the air filter device (1), and a fiber filter layer (17), an activated carbon filter layer (18) and an electrostatic filter layer (16) which are matched with the inside of the air filter device (1) are arranged on the lower part of the rubber blocking block (15) from left to right.

4. The air compression storage system for power generation according to claim 3, characterized in that: An inlet pipe (21) is arranged on the upper left side of the air filter device (1); a paper filter layer (19) is located on the left side of the inlet pipe (21); an inlet valve (20) is located on the right side of the paper filter layer (19); and the inlet valve (20) is controlled by a central controller.

5. The air compression storage system for power generation according to claim 2, characterized in that: The liquefied air storage device (5) is a square storage barrel, the left side of which is inclined toward the right side. The liquefied air storage device (5) comprises, from the inside to the outside, a corrosion-resistant inner liner (28), a shock-absorbing layer (27), a main vacuum layer (24), and an outer shell (25). The upper left side of the liquefied air storage device (5) is a liquefied air inlet (22), and a fifth valve (23) is arranged above the liquefied air inlet (22). The lower right side of the liquefied air storage device (5) is connected to the flow control valve (12), and the other side of the flow control valve (12) is a universal pipeline (11).

6. An air compression storage system for power generation according to claim 5, characterized in that: A temperature sensor (26) is arranged at the top of the corrosion-resistant inner container (28), and a pressure sensor (29) is arranged at the bottom. Both the temperature sensor (26) and the pressure sensor (29) are controlled by a central controller.

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