Four-row compressed air energy storage power station arrangement form capable of improving system efficiency

Abstract

The invention discloses a four-row compressed air energy storage power station arrangement form capable of improving system efficiency, and belongs to the field of compressed air energy storage engineering, the power station adopts a four-row arrangement pattern of booster stations, a main power house, heat exchange areas and heat storage areas, and the booster stations, the heat exchange areas, the heat storage areas, air compressor rooms, water affair areas, cooling tower areas and pre-plant areas are radiated by taking the main power house as the center. The point-to-surface auxiliary equipment is arranged around the main power house; the booster station, the main power house, the heat exchange area and the heat storage area are sequentially arranged in a power station core area as core buildings according to the technological process. The water affair area is arranged at one end close to the booster station and the main power house; the cooling tower area is arranged at one end close to the main power house and the heat exchange area; the factory front area is arranged at one end close to the heat storage area; and the air compressor room is arranged between the heat exchange area and the cooling tower area. The device shortens the lengths of chemical, hydraulic, heating and ventilation oil-containing wastewater pipelines, reduces the power consumption of an auxiliary machine, improves the system efficiency, and is suitable for compressed air energy storage power stations with different capacities.

Description

Technical Field

[0001] The present invention relates to the technical field of compressed air energy storage engineering, and in particular to a four-row compressed air energy storage power station layout for improving system efficiency, and is particularly suitable for compressed air energy storage power stations of various levels and gas storage forms. Background Art

[0002] With the rapid development of new energy and electricity, and the green and low-carbon concept of energy strategy, energy storage capacity is increasingly insufficient, so it is imperative to develop large-capacity and long-term compressed air energy storage technology and engineering. At present, the capacity of thermal storage compressed air energy storage has developed to 300MW. my country is in a leading position in technology and engineering in this field. There are many projects under construction and planned, but the layout of each project is quite different, and there is no unified standard. This is mainly because compressed air energy storage power stations are different from conventional thermal power units. In addition to the main plant, the booster station, heat exchange area and heat storage area are also the core buildings of compressed air energy storage power stations. Whether the core buildings are reasonable directly affects the economy of power station operation and the convenience of maintenance and repair, and has a great impact on the efficiency of the compressed air power station system. The four core areas complement each other and influence each other. The main power plant, booster station, heat exchange area and heat storage area are located at the core of the power plant. Their layout and structural type have a significant impact on the inter-stage resistance of the power plant compressor and expander, pipeline resistance, power plant heat dissipation loss, heat exchanger heat dissipation loss, electrical excitation loss, plant power consumption rate, system efficiency, etc. Its layout plan has always been one of the cores of the research on compressed energy storage power plants. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a four-row compressed air energy storage power station layout that improves system efficiency, with the main plant as the center, radiating the booster station, heat exchange area, heat storage area, air compressor room, and water area, shortening the length of chemical, hydraulic, HVAC, and oily wastewater pipelines, reducing auxiliary machine power consumption, and improving system efficiency.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: A four-row compressed air energy storage power station layout that improves system efficiency. The power station adopts a four-row layout of booster station + main plant + heat exchange area + heat storage area. The booster station, heat exchange area, heat storage area, air compressor room, water area, cooling tower area and front area are radiated from the main plant as the center, and auxiliary equipment is arranged around the main plant in a point-to-surface manner. The booster station, the main plant building, the heat exchange area and the heat storage area are arranged in sequence in the core area of ​​the power station according to the process flow as core buildings; the water conservancy area is arranged at one end close to the booster station and the main plant building; the cooling tower area is arranged at one end close to the main plant building and the heat exchange area; the front area of ​​the plant is arranged at one end close to the heat storage area; and the water conservancy area, the cooling tower area and the front area of ​​the plant are arranged in sequence; the air compressor room is arranged between the heat exchange area and the cooling tower area.

[0005] A further improvement of the technical solution of the present invention is that: the main plant building adopts a "combined main plant building" layout, and the compressor unit, expansion generator unit and electronic control auxiliary workshop are all arranged in the main plant building; the compressor unit operates in double rows, and the single-line compressor unit adopts 4 compressors arranged in series, and the first double-line compressor unit, the expansion generator unit and the second double-line compressor unit are arranged in sequence along the length direction of the main plant building, and the electronic control auxiliary workshop is arranged in the width direction of the main plant building.

[0006] A further improvement of the technical solution of the present invention is that: one inspection truck is set for each of the four compressors of a single-line compressor unit; the expansion generator unit and the compressor unit adopt different spans according to the size of the units; an inspection truck is also set for the expansion generator unit; inspection trucks are set for both the compressor span and the expander span of the main plant, and the inspection trucks are set along the width direction.

[0007] A further improvement of the technical solution of the present invention is that: the first-stage compressor is arranged longitudinally at the outermost side of the main plant, and the air intake and muffler of the first-stage compressor are arranged outside the main plant; the second-stage compressor, the third-stage compressor and the fourth-stage compressor are arranged sequentially and transversely along the width direction of the main plant, and the compressor intake and exhaust pipes are both located on one side of the compressor; The first-stage compressor and the second-stage compressor share an oil station, which is arranged horizontally beside the first-stage compressor and close to the second-stage compressor; the third-stage compressor and the fourth-stage compressor share an oil station, which is arranged between the third-stage compressor and the fourth-stage compressor.

[0008] A further improvement of the technical solution of the present invention is that: the exhaust duct of the expander is arranged in the main factory building; the expander is arranged close to the electronic control auxiliary workshop; the high-pressure cylinder air inlet duct, high-pressure cylinder exhaust duct, medium-pressure cylinder air inlet duct, medium-pressure cylinder exhaust duct and low-pressure cylinder air inlet duct of the expander are all arranged on one side of the expander.

[0009] A further improvement of the technical solution of the present invention is that the electronically controlled auxiliary workshop is equipped with 10kV system equipment of the compressed air system and its compressor motor inverter, 10kV system equipment for plant use, low-voltage power center and motor control center equipment of the unit, diesel generator sets and low-voltage safety system equipment.

[0010] A further improvement of the technical solution of the present invention is that industrial wastewater collection pools, fire water pools, comprehensive water pump houses, chemical water complex buildings and oily wastewater treatment facilities are centrally arranged in the water service area.

[0011] A further improvement of the technical solution of the present invention is that: a heat storage spherical tank and a heat medium water pump room are arranged in the heat storage area; and the heat medium water pump room is arranged close to the heat storage spherical tank.

[0012] A further improvement of the technical solution of the present invention is that: in the heat exchange area, the expansion side high-pressure heat exchanger, the compression side high-pressure heat exchanger, the medium-pressure heat exchanger, and the low-pressure heat exchanger are arranged in order from near to far in terms of distance from the main plant.

[0013] Due to the adoption of the above technical solution, the technical progress achieved by the present invention is: 1. The compressed air energy storage power station in the present invention adopts a four-row compressed air energy storage power station layout of booster station + main plant + heat exchange area + heat storage area, with the main plant as the center, radiating the booster station, heat exchange area, heat storage area, air compressor room, and water area, shortening the length of chemical, hydraulic, HVAC, and oily wastewater pipelines, and reducing the power consumption of auxiliary machines.

[0014] 2. In the present invention, the water service area is arranged close to the main plant and the heat exchange area, which reduces the length of the cooling water pipeline, reduces the head of the circulating water pump, reduces the power consumption of the circulating water pump, and reduces the power consumption rate of the compressed air energy storage power station.

[0015] 3. In the present invention, the air compressor room is arranged close to the main plant building, which reduces the length of instrument gas and maintenance gas, reduces resistance loss, reduces the air compressor outlet pressure, reduces the air compressor power consumption, and reduces the power consumption rate of the compressed air energy storage power station.

[0016] 4. In the present invention, the booster station is arranged close to the main plant building, which shortens the length of the high-voltage cable and the low-voltage cable, and reduces the impedance, voltage drop and heat dissipation loss of the high-voltage and low-voltage cables.

[0017] 5. In the present invention, the heat storage area is arranged adjacent to the heat exchange area, which shortens the length of the low-temperature heat medium water pipe and the high-temperature heat medium water pipe, reduces the resistance of the low-temperature heat medium water pipe and the high-temperature heat medium water pipe, reduces the head of the high-temperature heat medium water pump and the low-temperature heat medium water pump, reduces the power consumption of the high-temperature heat medium water pump and the low-temperature heat medium water pump, and reduces the power consumption rate of the plant.

[0018] 6. The main plant in the present invention adopts the layout of a "combined main plant". The compressor unit, expansion generator unit, and electronic control auxiliary workshop are all arranged in the main plant. A shared maintenance vehicle is set on the compressor side and the expander side, which reduces the maintenance electricity consumption.

[0019] 7. In the present invention, the heat medium water pump room is arranged close to the heat storage spherical tank, which reduces the resistance of the heat medium water pump inlet pipeline, reduces the cavitation margin requirement of the water pump, increases the speed of the high-temperature heat medium water pump and the low-temperature heat medium water pump, and increases the efficiency of the high-temperature heat medium water pump and the low-temperature heat medium water pump.

[0020] 8. In the present invention, every two compressors share one oil station, which shortens the length of the compressor lubricating oil pipeline, reduces the resistance of the lubricating oil pipeline, and reduces the energy consumption of the lubricating oil pump.

[0021] 9. The air intake port and muffler of the first-stage compressor of the present invention are arranged outside the factory building, which increases the straight section length of the compressor inlet, reduces the air unevenness at the compressor inlet, reduces the air intake resistance, increases the air intake pressure at the compressor inlet, reduces the pressure ratio of the first-stage compressor, and reduces the power consumption of the compressor.

[0022] 10. In the present invention, the exhaust pipeline of the expander is arranged in the factory building, which shortens the length of the exhaust pipeline, reduces the exhaust pressure loss of the expander, reduces the exhaust back pressure of the expander, and improves the output of the low-pressure cylinder of the expander.

[0023] 11. In the present invention, the pipelines on the compressor side and the expander side are arranged on one side of the equipment, which shortens the pipeline length, reduces the pipeline resistance, and reduces the power consumption of the compressor and the expander.

[0024] 12. In the present invention, the expander is arranged close to the electric control auxiliary workshop, which shortens the length of the electrical common box bus and reduces the impedance loss of the 10kV high-voltage plant power.

[0025] 13. In the present invention, the electric control auxiliary workshop is close to the compressor and the expander, which shortens the length of the electrical common box bus, shortens the length of the 380V low-voltage power cable, reduces the impedance loss of the 10kV high-voltage plant electricity, reduces the voltage drop of the low-voltage power cable, and reduces the heat dissipation loss of the cable.

[0026] 14. In the present invention, the heat exchanger area is arranged in the order of the distance from the main plant building from near to far, including the expansion side high-pressure heat exchanger, the compression side high-pressure heat exchanger, the medium-pressure heat exchanger, and the low-pressure heat exchanger, which shortens the length of the high-pressure side pipeline, reduces the resistance loss between the compressor and the expander stages, and shortens the length of the heat exchanger cooling water and heat medium water pipelines, reduces the head of the heat medium water pump and the circulating water pump, reduces the energy consumption of the heat medium water pump and the circulating water pump, and reduces the power consumption rate of the power station.

[0027] 15. The present invention is applicable to compressed air energy storage power stations of different capacities and has important typical demonstration significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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 are briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. Figure 1 Schematic diagram of the general layout of a compressed air energy storage power station in an embodiment of the present invention; Figure 2 This is a plan layout diagram of the main plant building of a compressed air energy storage power station in an embodiment of the present invention; Figure 3 This is a cross-sectional layout diagram of the main plant building of a compressed air energy storage power station in an embodiment of the present invention; Figure 4 It is a plan view of the heat exchange area of ​​the compressed air energy storage power station in an embodiment of the present invention; Among them, 1. Main factory building; 11. First-stage compressor; 12. Second-stage compressor; 13. Third-stage compressor; 14. Fourth-stage compressor; 15. Electronic control auxiliary workshop; 16. Expansion generator set; 17. Maintenance truck; 18. Expander; 19. Exhaust port of expander; 110. Intake port; 111. Muffler; 2. Heat exchange area; 3. Heat storage area; 4. Booster station; 5. Water area; 51. Industrial wastewater collection pool; 52. Fire water pool; 53. Comprehensive water pump room; 54. Chemical water complex building; 6. Cooling tower area; 7. Front area of ​​the factory; 8. Air compressor room. DETAILED DESCRIPTION

[0029] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or apparatus.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "several" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] The present invention is further described in detail below with reference to the accompanying drawings and embodiments: like Figure 1 As shown, a four-row compressed air energy storage power station layout form for improving system efficiency, the power station adopts a four-row layout pattern of booster station 4 + main plant 1 + heat exchange area 2 + heat storage area 3, with the main plant 1 as the center, radiating booster station 4, heat exchange area 2, heat storage area 3, air compressor room 8, water area 5, cooling tower area 6, front area 7, and auxiliary equipment is arranged around the main plant 1 in a point-to-surface manner; The booster station 4, the main plant 1, the heat exchange area 2 and the heat storage area 3 are arranged in sequence in the core area of ​​the power station according to the process flow as core buildings; the water area 5 is arranged at one end close to the booster station 4 and the main plant 1; the cooling tower area 6 is arranged at one end close to the main plant 1 and the heat exchange area 2; the front area 7 is arranged at one end close to the heat storage area 3; and the water area 5, the cooling tower area 6 and the front area 7 are arranged in sequence; the air compressor room 8 is arranged between the heat exchange area 2 and the cooling tower area 6.

[0033] Specifically, the public areas (water area 5, cooling tower area 6 and front area 7) are concentrated at the fixed ends of the booster station 4, the main plant 1, the heat exchange area 2 and the heat storage area 3, and the conditions for unit expansion are reserved. The air compressor room 8 mainly serves the compressor unit and the expansion generator unit 16. The air compressor room 8 is arranged near the main plant 1, which reduces the loss of instrument gas and maintenance gas along the way, reduces the air compressor outlet pressure, reduces the air compressor power consumption, and reduces the power consumption rate of the plant. The booster station 4 is arranged close to the main plant 1, shortening the length of the high-voltage cable and the low-voltage cable, and reducing the impedance, pressure drop and heat dissipation loss of the high and low voltage cables. The water area 5 is close to the main plant 1 area, shortening the water source access distance, reducing the length and resistance of the circulating water pipeline, reducing the head of the circulating water pump, reducing the power consumption of the circulating water pump, and reducing the power consumption rate of the plant. The heat storage area 3 is arranged adjacent to the heat exchange area 2, which shortens the length of the low-temperature heat medium water pipe and the high-temperature heat medium water pipe, reduces the resistance of the low-temperature heat medium water pipe and the high-temperature heat medium water pipe, reduces the head of the high-temperature heat medium water pump and the low-temperature heat medium water pump, reduces the power consumption of the high-temperature heat medium water pump and the low-temperature heat medium water pump, and reduces the power consumption rate of the plant.

[0034] Further, such as Figure 2-3As shown, the main plant 1 adopts a "combined main plant" layout, and the compressor unit, the expansion generator unit 16 and the electronic control auxiliary workshop 15 are all arranged in the main plant 1; the compressor unit operates in double rows, and the single-line compressor unit adopts 4 compressors arranged in series. The first double-line compressor unit, the expansion generator unit 16 and the second double-line compressor unit are arranged in sequence along the length direction of the main plant 1, and the electronic control auxiliary workshop 15 is arranged in the width direction of the main plant 1.

[0035] Further, such as Figure 2-3 As shown, a maintenance truck 17 is set for each of the four compressors of the single-line compressor unit. The expansion generator unit 16 and the compressor unit adopt different spans according to the size of the unit. The expansion generator unit 16 is also equipped with a maintenance truck 17. The main plant compressor span and expander span are both equipped with maintenance trucks 17, and the maintenance trucks 17 are arranged along the width direction. The four-stage compressors share one maintenance truck 17, and the expander area shares one maintenance truck 17, which reduces the maintenance electricity consumption and reduces the power consumption rate of the plant.

[0036] Furthermore, the first stage compressor 11 is longitudinally arranged at the outermost side of the main plant 1, and the air inlet 110 and the muffler 111 of the first stage compressor 11 are arranged outside the main plant 1. The straight section length of the compressor inlet is increased, the air non-uniformity at the compressor inlet is reduced, the air inlet resistance is reduced, the air inlet pressure of the compressor is increased, and the pressure ratio of the first stage compressor is reduced; The second compressor 12, the third compressor 13 and the fourth compressor 14 are arranged in sequence and transversely along the width direction of the main plant 1, and the compressor intake and exhaust pipes are located on one side of the compressor. This shortens the pipe length, reduces intake and exhaust resistance, and reduces system resistance loss; The first stage compressor 11 and the second stage compressor 12 share an oil station, which is arranged horizontally beside the first stage compressor 11 and close to the second stage compressor 12. The third stage compressor 13 and the fourth stage compressor 14 share an oil station, which is arranged between the third stage compressor 13 and the fourth stage compressor 14. The length of the compressor lubricating oil pipeline is shortened, the resistance of the lubricating oil pipeline is reduced, the energy consumption of the lubricating oil pump is reduced, and the power consumption rate of the power station is reduced.

[0037] Further, such as Figure 2-3 As shown, the exhaust pipe of the expander 18 is arranged in the main plant 1, which shortens the length of the exhaust pipe, reduces the exhaust pressure loss of the expander, and reduces the exhaust back pressure of the expander; The expander 18 is arranged close to the electric control auxiliary workshop 15, which shortens the length of the electrical common box bus and reduces the impedance loss of the 10kV high-voltage plant power supply. The high-pressure cylinder air intake pipe, high-pressure cylinder exhaust pipe, intermediate-pressure cylinder air intake pipe, intermediate-pressure cylinder exhaust pipe and low-pressure cylinder air intake pipe of the expander 18 are all arranged on one side of the expander 18, shortening the pipe length and reducing the resistance loss between the high-pressure cylinder, intermediate-pressure cylinder and low-pressure cylinder stages of the expander.

[0038] Further, such as Figure 2 As shown, the 10kV system equipment of the compressed air system and its compressor motor inverter, the 10kV system equipment for the plant, the low-voltage power center (PC) and motor control center (MCC) equipment of the unit, the diesel generator set and the low-voltage security system equipment are all arranged in the electric control auxiliary workshop 15 adjacent to the expansion generator set 16 and the compressor unit, which shortens the length of the electrical common box bus, shortens the length of the 380V low-voltage power cable, reduces the impedance loss of the 10kV high-voltage plant electrical, reduces the voltage drop of the low-voltage power cable, and reduces the heat dissipation loss of the cable.

[0039] Further, such as Figure 1 As shown, the water area 5 is centrally arranged with industrial wastewater collection pool 51, fire water pool 52, comprehensive water pump room 53, chemical water complex building 54 and oily wastewater treatment facilities. This can reduce the length of cooling water pipelines, reduce the head of circulating water pumps, reduce the power consumption of circulating water pumps, and reduce the power consumption rate of the plant. Production, living, fire water, water treatment, etc. are centrally arranged in the water area 5 of the plant area, close to the main plant 1 area, shortening the distance to water source access.

[0040] Further, such as Figure 1 As shown in the figure, a heat storage spherical tank and a heat medium water pump room are arranged in the heat storage area 3; the heat medium water pump room is arranged close to the heat storage spherical tank. The heat medium water pump room in the heat storage area is arranged close to the heat storage spherical tank, which reduces the resistance of the heat medium water pump inlet pipeline, reduces the cavitation margin requirement of the water pump, increases the speed of the high-temperature heat medium water pump and the low-temperature heat medium water pump, and improves the efficiency of the high-temperature heat medium water pump and the low-temperature heat medium water pump.

[0041] Further, such as Figure 4 As shown, the expansion side high pressure heat exchanger, compression side high pressure heat exchanger, medium pressure heat exchanger, and low pressure heat exchanger are arranged in the heat exchange area 2 in order from near to far from the main powerhouse 1. The length of the high pressure side pipeline is shortened, the resistance loss between the compressor and the expander stages is reduced, and the length of the heat exchanger cooling water and heat medium water pipelines is shortened, the head of the heat medium water pump and the circulating water pump is reduced, the energy consumption of the heat medium water pump and the circulating water pump is reduced, and the power consumption rate of the power station is reduced.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A four-row compressed air energy storage power station layout for improving system efficiency, characterized by: The power station adopts a four-row layout of booster station (4) + main powerhouse (1) + heat exchange area (2) + heat storage area (3), with the main powerhouse (1) as the center and radiating the booster station (4), heat exchange area (2), heat storage area (3), air compressor room (8), water area (5), cooling tower area (6) and front area (7), with auxiliary equipment arranged around the main powerhouse (1) in a point-to-surface manner; The booster station (4), the main plant (1), the heat exchange area (2), and the heat storage area (3) are arranged as core buildings in sequence in the core area of ​​the power station according to the process flow; the water service area (5) is arranged at one end close to the booster station (4) and the main plant (1); the cooling tower area (6) is arranged at one end close to the main plant (1) and the heat exchange area (2); the front area (7) is arranged at one end close to the heat storage area (3); and the water service area (5), the cooling tower area (6), and the front area (7) are arranged in sequence; and the air compressor room (8) is arranged between the heat exchange area (2) and the cooling tower area (6).

2. According to claim 1, a four-row compressed air energy storage power station layout for improving system efficiency is characterized by: The main plant (1) adopts a "combined main plant" layout, wherein the compressor unit, the expansion generator unit (16) and the electric control auxiliary workshop (15) are all arranged in the main plant (1); the compressor unit operates in double rows, and the single-line compressor unit adopts a series arrangement of four compressors. The first double-line compressor unit, the expansion generator unit (16) and the second double-line compressor unit are arranged in sequence along the length direction of the main plant (1), and the electric control auxiliary workshop (15) is arranged in the width direction of the main plant (1).

3. According to claim 2, a four-row compressed air energy storage power station layout for improving system efficiency is characterized by: One inspection vehicle (17) is provided for each of the four compressors of the single-line compressor unit. The expansion generator unit (16) and the compressor unit have different spans according to the size of the units. The expansion generator unit (16) is also provided with one inspection vehicle (17). Inspection vehicles (17) are provided for both the compressor span and the expander span of the main powerhouse. The inspection vehicles (17) are provided along the width direction.

4. According to claim 2, a four-row compressed air energy storage power station layout for improving system efficiency is characterized by: The first-stage compressor (11) is longitudinally arranged at the outermost side of the main plant (1), and the air intake (110) and the muffler (111) of the first-stage compressor (11) are arranged outside the main plant (1); the second-stage compressor (12), the third-stage compressor (13) and the fourth-stage compressor (14) are sequentially and transversely arranged along the width direction of the main plant (1), and the compressor air intake and exhaust pipes are both located on one side of the compressor; The first-stage compressor (11) and the second-stage compressor (12) share an oil station, which is arranged horizontally beside the first-stage compressor (11) and close to the second-stage compressor (12); the third-stage compressor (13) and the fourth-stage compressor (14) share an oil station, which is arranged between the third-stage compressor (13) and the fourth-stage compressor (14).

5. According to claim 2, a four-row compressed air energy storage power station layout for improving system efficiency is characterized by: The exhaust duct of the expander (18) is arranged in the main plant (1); the expander (18) is arranged close to the electric control auxiliary workshop (15); the high-pressure cylinder air intake duct, the high-pressure cylinder exhaust duct, the medium-pressure cylinder air intake duct, the medium-pressure cylinder exhaust duct, and the low-pressure cylinder air intake duct of the expander (18) are all arranged on one side of the expander (18).

6. According to claim 2, a four-row compressed air energy storage power station layout for improving system efficiency is characterized by: Arranged in the electric control auxiliary workshop (15) are 10kV system equipment of the compressed air system and its compressor motor inverter, 10kV system equipment for plant use, low-voltage power center and motor control center equipment of the unit, diesel generator sets and low-voltage safety system equipment.

7. According to claim 1, a four-row compressed air energy storage power station layout for improving system efficiency is characterized by: The water service area (5) is centrally arranged with an industrial wastewater collection pool (51), a fire water pool (52), a comprehensive water pump room (53), a chemical water complex building (54) and oily wastewater treatment facilities.

8. According to claim 1, a four-row compressed air energy storage power station layout for improving system efficiency is characterized by: A heat storage spherical tank and a heat medium water pump room are arranged in the heat storage area (3); the heat medium water pump room is arranged close to the heat storage spherical tank.

9. According to claim 1, a four-row compressed air energy storage power station layout for improving system efficiency is characterized by: In the heat exchange area (2), an expansion side high pressure heat exchanger, a compression side high pressure heat exchanger, a medium pressure heat exchanger, and a low pressure heat exchanger are arranged in order from near to far from the main plant (1).

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