CN206234051U - A kind of compressed air energy storage power generating system - Google Patents

Abstract

The utility model provides a kind of compressed air energy storage power generating system, is related to technical field of wind power generation.The compressed air energy storage power generating system includes wind wheel, generator, hydraulic module, Pneumatic energy module and hydropneumatic conversion module；The wind wheel is connected with the hydraulic module, converts wind energy into hydraulic energy；The hydraulic module is connected with the generator, is electric energy by hydraulic energy transfer；The hydropneumatic conversion module is connected with the hydraulic module, mutually converts hydraulic energy and air pressure；The Pneumatic energy module is connected with the hydropneumatic conversion module, for storing air pressure.The compressed air energy storage power generating system low production cost, without gas emission, can flexibly, quickly cope with electricity consumption low peak period and peak period, it is ensured that the stabilization of electricity consumption.

Description

A compressed air energy storage power generation system

technical field

The utility model relates to the technical field of wind power generation, in particular to a compressed air energy storage power generation system.

Background technique

At present, wind power is one of the most mature, large-scale development conditions, and one of the most promising power generation methods for commercialization. Countries around the world have realized the importance of wind power in adjusting energy structure and mitigating environmental pollution. given high priority.

In the existing hydraulic wind power generation system, compressed air energy storage is a commonly used energy storage method for wind turbines, and the stored energy can be used for generators to generate electricity when needed. A traditional compressed air energy storage system consists of at least the following four components: an air compressor, an air storage tank, a combustion chamber, and a turbine. The process is: the motor drives the air compressor to store the gas in the gas storage tank. When power generation is required, the gas in the gas storage tank is released into the combustion chamber. With the combustion of fuel in the combustion chamber, high temperature and high pressure gas is formed. High temperature and high pressure The gas is passed through a turbine to generate electricity. In the hydraulic fan, some people envisage directly using the accumulator to store the hydraulic energy, and when needed, use the hydraulic energy to directly drive the motor to drive the generator to generate electricity. Compared with the traditional energy storage system, such a system has a simple structure and low cost, but this energy storage system has at least the following problems:

1) Since the accumulator stores compressed air energy and hydraulic energy at the same time, the energy storage density ratio is low. Compared with a simple gas storage tank, the accumulator requires a larger volume for storing the same energy, resulting in a larger footprint Big;

2) During the energy storage and release process of the entire hydraulic system, the oil volume changes greatly, which increases the hydraulic system's requirements for oil volume and storage, and increases production costs.

Utility model content

The purpose of the utility model is to provide a compressed air energy storage power generation system, which aims to solve the technical problems of the existing hydraulic wind power generation system, such as large volume, inability to store energy, high requirements for sealing and pressure resistance, and high cost.

The utility model provides a technical solution:

A compressed air energy storage power generation system includes a wind wheel (110), a generator (120), a hydraulic module (130), a pneumatic energy storage module (150) and a hydraulic-pneumatic conversion module (140); the wind wheel (110) The hydraulic module (130) is connected to convert wind energy into hydraulic energy; the hydraulic module (130) is connected to the generator (120) to convert hydraulic energy into electrical energy; the hydropneumatic conversion module (140) The pneumatic energy storage module (150) is connected with the hydraulic-pneumatic conversion module (140) to store the pneumatic energy.

Further, the hydraulic module (130) includes a hydraulic pump (131) and a hydraulic motor (132); the wind wheel (110) is connected to the hydraulic pump (131); the two ends of the hydraulic pump (131) respectively communicate with the two ends of the hydraulic motor (132); the hydraulic motor (132) is connected with the generator (120).

Further, the hydropneumatic conversion module (140) includes a first directional valve (141), a second directional valve (142), an oil cylinder (143), a first one-way valve (144) and a second one-way valve (145) );

Port P and port T of the first directional valve (141) communicate with the inlet (U) and outlet (V) of the hydraulic motor (132) respectively, and port A and port B of the first directional valve (141) communicate with the inlet (U) and outlet (V) of the hydraulic motor (132) respectively. The ports communicate with the two working chambers of the oil cylinder (143) through the two outlets (E1, F1) of the oil cylinder (143);

Port P and port T of the second directional valve (142) communicate with the inlet (U) and outlet (V) of the hydraulic motor (132) respectively, and port A of the second directional valve (142) communicates with the inlet (V) of the hydraulic motor (132). The two outlets (S1, Q1) of the oil cylinder (143) are communicated, and the B port of the second directional valve (142) is communicated with the two inlets (G1, H1) of the oil cylinder (143);

The first one-way valve (144) and the second one-way valve (145) are arranged between the second one-way valve (142) and the oil cylinder (143); the first one-way valve ( 144) Make the hydraulic oil flow into the port A of the second directional valve (142) from the two outlets (S1, Q1) of the oil cylinder (143); the second one-way valve (145) makes the hydraulic oil One-way flow into the two inlets (G1, H1) of the oil cylinder (143) from port B of the second directional valve (142);

The piston rod of the oil cylinder (143) is connected with the pneumatic energy storage module (150).

Further, the pneumatic energy storage module (150) includes an air storage tank (151), a third directional valve (152), a fourth directional valve (153), a cylinder (154), a third one-way valve (155) and The fourth one-way valve (156);

The piston rod of the cylinder (154) is hinged into one with the piston rod of the oil cylinder (143);

The two inlets (G2, H2) of the cylinder (154) communicate with the B port and the A port of the third directional valve (152) respectively, and the T port of the third directional valve (152) is used for communicating gas source, the P port of the third directional valve (152) communicates with the gas storage tank (151);

The T port of the fourth directional valve (153) is used to communicate with the gas source, the P port of the fourth directional valve (153) is in communication with the gas storage tank (151), and the fourth directional valve (153) Port B of the valve is in communication with the two outlets (E2, F2) of the cylinder (154), and port A of the fourth directional valve (153) is in communication with the two inlets (M2, N2) of the cylinder (154). ;

The third one-way valve (155) and the fourth one-way valve (156) are arranged between the fourth one-way valve (153) and the cylinder (154); the third one-way valve ( 155) Make the gas flow into the two outlets (E2, F2) of the cylinder (154) from the B port of the fourth directional valve (153); the fourth one-way valve (156) makes the gas flow from the The two inlets (M2, N2) of the cylinder (154) flow into the port A of the fourth directional valve (153) in one direction.

Further, the hydraulic module (130) also includes a motor control valve group (133); the motor control valve group (133) includes a first cartridge valve (1331), a second cartridge valve (1332) and a fifth Directional valve (1333);

One oil port (X1) of the first cartridge valve (1331) communicates with one end of the hydraulic pump (131), and the other oil port (Y1) of the first cartridge valve (1331) communicates with the One end of the hydraulic motor (132) is connected, and the control port (Z1) of the first cartridge valve (1331) is connected with the B port of the fifth directional valve (1333);

One oil port (X2) of the second cartridge valve (1332) communicates with the other end of the hydraulic pump (131), and the other oil port (Y2) of the second cartridge valve (1332) communicates with the other end of the hydraulic pump (131). One end of the hydraulic motor (132) is connected, and the control port (Z2) of the second cartridge valve (1332) is connected with the A port of the fifth directional valve (1333);

The P port of the fifth directional valve (1333) is a control oil port, and the T port of the fifth directional valve (1333) is an oil drain port.

Further, the hydraulic module (130) also includes an oil replenishment system (134); the oil replenishment system (134) includes a flush overflow valve (1341), an oil replenishment pump (1342) and an oil replenishment tank (1343);

The oil inlet port of the flushing overflow valve (1341) communicates with the oil suction port of the hydraulic pump (131), and the oil outlet port of the flushing overflow valve (1341) communicates with the oil supply tank (1343);

The oil outlet of the charge pump (1342) communicates with the oil suction port of the hydraulic pump (131), and the oil suction port of the charge pump (1342) communicates with the charge oil tank (1343).

Further, the hydraulic module (130) further includes a safety valve (135); the two ends of the safety valve (135) communicate with the two ends of the hydraulic pump (131) respectively.

Further, the hydropneumatic conversion module (140) also includes a first proximity switch (146) and a second proximity switch (147); the first proximity switch (146) and the second proximity switch (147) are respectively Set on the two working chambers of the oil cylinder (143), the first proximity switch (146) and the second proximity switch (147) are used to move the piston rod of the oil cylinder (143) to the limit position time, control the piston rod of the oil cylinder (143) to move forward or reversely.

Further, the pneumatic energy storage module (150) further includes a pressure sensor (157); the pressure sensor (157) is arranged at the outlet of the gas storage tank (151).

Further, the pneumatic energy storage module (150) also includes a decompression valve (158); the decompression valve (158) is arranged between the air storage tank (151) and the third directional valve (152) between.

Compared with the existing hydraulic wind power generation system, the beneficial effects of the compressed air energy storage power generation system provided by the utility model are:

In the compressed air energy storage power generation system provided by the utility model, firstly, the hydraulic-pneumatic conversion module is used to complete the mutual conversion of hydraulic energy and pneumatic energy, so that the volume of hydraulic oil in the hydraulic module will not change, and the requirements for the hydraulic system are reduced; At the same time, the pneumatic energy of the energy storage only needs to drive the cylinder to complete the energy conversion, which reduces the requirements of the pneumatic system and has a simple structure; secondly, the pneumatic energy storage module is used to store the pneumatic energy without storing hydraulic energy, which reduces the volume of the pneumatic energy storage module , reduces the space required by the system, and has no gas emissions; finally, the system can store energy during low power consumption periods, and can use the stored energy to generate electricity during peak power consumption periods, improving the use effect of the system.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following drawings will be briefly introduced in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained according to these drawings without creative work.

Fig. 1 is a schematic structural diagram of a compressed air energy storage power generation system provided by an embodiment of the present invention.

Fig. 2 is an enlarged schematic diagram of the structure of the hydraulic module in Fig. 1 .

FIG. 3 is an enlarged schematic diagram of the structure of the hydraulic-pneumatic conversion module in FIG. 1 .

Fig. 4 is an enlarged schematic diagram of the structure of the pneumatic energy storage module in Fig. 1 .

Icons: 110-wind wheel; 120-generator; 130-hydraulic module; 131-hydraulic pump; 132-hydraulic motor; 133-motor control valve group; 1331-first cartridge valve; 1332-second cartridge valve; 1333-fifth directional valve; 134-oil supply system; 1341-flushing overflow valve; 1342-charge pump; 1343-charge oil tank; 135-safety valve; 136-hydraulic one-way valve; 141-first directional valve; 142-second directional valve; 143-oil cylinder; 144-first one-way valve; 145-second one-way valve; 146-first proximity switch; 147-second proximity switch; 150- Pneumatic energy storage module; 151-gas storage tank; 152-third directional valve; 153-fourth directional valve; 154-cylinder; 155-third one-way valve; 156-fourth one-way valve; 157-pressure sensor; 158 - Pressure reducing valve.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In addition, the terms "first", "second", "third", "fourth", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless otherwise specified and limited, the terms "setting", "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection , can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediary, and can be internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

Fig. 1 is a schematic structural diagram of a compressed air energy storage power generation system provided by an embodiment of the present invention, please refer to Fig. 1 . For clarity and simplicity of description, in FIG. 1, the left passage ports of the oil cylinder 143 and the air cylinder 154 are referred to as "exit", and the right passage ports are referred to as "inlet". The communication between the components in the hydraulic module 130 and the hydraulic-pneumatic conversion module 140 refers to communication through oil pipes. The communication between the components in the pneumatic energy storage module 150 refers to the communication through air pipes.

This embodiment provides a compressed air energy storage power generation system (hereinafter referred to as "power generation system"). The power generation system includes a wind wheel 110 , a generator 120 , a hydraulic module 130 , a hydropneumatic conversion module 140 and a pneumatic energy storage module 150 . Wherein, the wind wheel 110 is connected with the hydraulic module 130 to convert wind energy into hydraulic energy. The hydraulic module 130 is connected with the generator 120 to convert hydraulic energy into electrical energy. The hydraulic-pneumatic conversion module 140 is connected with the hydraulic module 130 to convert hydraulic energy and pneumatic energy into each other. The pneumatic energy storage module 150 is connected with the hydraulic-pneumatic conversion module 140 for storing pneumatic energy.

FIG. 2 is an enlarged schematic diagram of the structure of the hydraulic module 130 in FIG. 1 , please refer to FIG. 2 . The hydraulic module 130 includes a hydraulic pump 131 , a hydraulic motor 132 , a motor control valve group 133 , an oil supplement system 134 , a safety valve 135 and a hydraulic check valve 136 .

The wind wheel 110 is connected with the hydraulic pump 131, and the wind wheel 110 drives the hydraulic pump 131 to operate under the blowing force of the wind. The oil suction port and the oil outlet port of the hydraulic pump 131 communicate with the outlet V and the inlet U of the hydraulic motor 132 respectively. The hydraulic motor 132 is connected with the generator 120, and the hydraulic motor 132 drives the generator 120 to generate electricity under the promotion of hydraulic oil.

The motor control valve group 133 is disposed between the wind wheel 110 and the hydraulic pump 131 . The motor control valve group 133 includes a first cartridge valve 1331 , a second cartridge valve 1332 and a fifth directional valve 1333 . Wherein, the fifth directional valve 1333 is a two-position four-way directional valve. An oil port X1 of the first cartridge valve 1331 communicates with one end of the hydraulic pump 131 , that is, communicates with the oil outlet of the hydraulic pump 131 . Another oil port Y1 of the first cartridge valve 1331 communicates with one end of the hydraulic motor 132 , that is, communicates with the oil suction port of the hydraulic pump 131 . The control port Z1 of the first cartridge valve 1331 communicates with the B port of the fifth directional valve 1333 .

An oil port X2 of the second cartridge valve 1332 communicates with the other end of the hydraulic pump 131 , that is, communicates with the oil suction port of the hydraulic pump 131 . Another oil port Y2 of the second cartridge valve 1332 communicates with the inlet U of the hydraulic motor 132 , that is, communicates with the oil port Y1 of the first cartridge valve 1331 . The control port Z2 of the second cartridge valve 1332 communicates with the port A of the fifth directional valve 1333 . The P port of the fifth directional valve 1333 is a control oil port, and the T port of the fifth directional valve 1333 is an oil drain port.

The working principle of the motor control valve group 133 is:

When the fifth directional valve 1333 is moved to the right position, namely the position shown in Figure 1, the control port Z1 of the first cartridge valve 1331 is not connected to oil, and the oil port X1 and oil port Y1 of the first cartridge valve 1331 are connected to each other. Not conducting. The control port Z2 of the second cartridge valve 1332 is connected to oil, the oil port X2 of the second cartridge valve 1332 is connected to the oil port Y2, and the inlet U and outlet V of the hydraulic motor 132 are short-circuited to prevent the hydraulic motor 132 from idling. effect.

When the fifth directional valve 1333 is moved to the left position, the control port Z1 of the first cartridge valve 1331 is connected with oil, and the oil port X1 and the oil port Y1 of the first cartridge valve 1331 are connected. The control port Z2 of the second cartridge valve 1332 is not connected with oil, and the oil port X2 and oil port Y2 of the second cartridge valve 1332 are not connected. In this way, the inlet U and the outlet V of the hydraulic motor 132 communicate with the oil outlet and the oil inlet of the hydraulic pump 131 respectively, and the hydraulic motor 132 normally operates under the drive of the hydraulic pump 131 .

The oil supplement system 134 is arranged at the oil suction port of the hydraulic pump 131 . The supplementary oil system 134 includes a flush relief valve 1341 , a supplementary oil pump 1342 and a supplementary oil tank 1343 . The oil inlet of the flush relief valve 1341 communicates with the other end of the hydraulic pump 131 , that is, communicates with the oil suction port of the hydraulic pump 131 . The oil outlet of the flushing relief valve 1341 is in communication with the replenishing oil tank 1343 . One end of the charge pump 1342 communicates with the other end of the hydraulic pump 131 , that is, the oil outlet of the charge pump 1342 communicates with the oil suction port of the hydraulic pump 131 . The oil suction port of the charge pump 1342 communicates with the charge oil tank 1343 .

Both ends of the safety valve 135 communicate with the two ends of the hydraulic pump 131 to release pressure and ensure the safe operation of the hydraulic pump 131 . The hydraulic check valve 136 is disposed between the oil outlet of the hydraulic pump 131 and the oil port X1 of the first cartridge valve 1331 . The hydraulic one-way valve 136 allows hydraulic oil to flow from the oil outlet of the hydraulic pump 131 into the oil port X1 of the first cartridge valve 1331 in one direction.

FIG. 3 is an enlarged schematic diagram of the structure of the hydraulic-pneumatic conversion module 140 in FIG. 1 , please refer to FIG. 3 . The hydropneumatic conversion module 140 includes a first directional valve 141 , a second directional valve 142 , an oil cylinder 143 , a first one-way valve 144 , a second one-way valve 145 , a first proximity switch 146 and a second proximity switch 147 . Wherein, the first directional valve 141 is a three-position four-way directional valve, and the second directional valve 142 is a two-position four-way directional valve.

Port A and port B of the first directional valve 141 communicate with both ends of the hydraulic motor 132 respectively. The two inlets of the first directional valve 141 communicate with the outlet E1 and the outlet F1 of the oil cylinder 143 respectively. Port P and port T of the second directional valve 142 communicate with both ends of the hydraulic motor 132 respectively. Port A of the second directional valve 142 communicates with outlet S1 and outlet Q1 of the oil cylinder 143 . Port B of the second directional valve 142 communicates with the inlet G1 and the inlet H1 of the oil cylinder 143 .

The first one-way valve 144 and the second one-way valve 145 are disposed between the second directional valve 142 and the oil cylinder 143 . The first one-way valve 144 allows the hydraulic oil to flow from the outlet S1 and the outlet Q1 of the oil cylinder 143 into the A port and the B port of the second directional valve 142 in one direction. The second one-way valve 145 allows the hydraulic oil to flow into the two inlets G1 and H1 of the oil cylinder 143 from the A port and the B port of the second directional valve 142 in one direction. The piston rod of the oil cylinder 143 is connected with the pneumatic energy storage module 150 .

The first proximity switch 146 and the second proximity switch 147 are respectively arranged at two ends of the oil cylinder 143 . The first proximity switch 146 and the second proximity switch 147 are used to control the piston rod of the oil cylinder 143 to move forward or reverse when the piston rod of the oil cylinder 143 moves to a limit position.

FIG. 4 is an enlarged schematic diagram of the structure of the pneumatic energy storage module 150 in FIG. 1 , please refer to FIG. 4 . The pneumatic energy storage module 150 includes an air storage tank 151 , a third directional valve 152 , a fourth directional valve 153 , a cylinder 154 , a third one-way valve 155 , a fourth one-way valve 156 , a pressure sensor 157 and a pressure reducing valve 158 . Wherein, the third directional valve 152 is a three-position four-way directional valve, and the fourth directional valve 153 is a two-position four-way directional valve.

The piston rod of the air cylinder 154 and the piston rod of the oil cylinder 143 are hinged as one, so that the air cylinder 154 and the oil cylinder 143 can drive each other. The inlet G2 and the inlet H2 of the cylinder 154 communicate with the B port and the A port of the third directional valve 152 respectively. The T port of the third directional valve 152 is used to communicate with an air source. Port P of the third directional valve 152 communicates with the gas storage tank 151 .

The T port of the fourth directional valve 153 is used to communicate with an air source. Port P of the fourth directional valve 153 communicates with the gas storage tank 151 . Port B of the fourth directional valve 153 communicates with outlets E2 and F2 of the cylinder 154 . The A port of the fourth directional valve 153 communicates with the inlet M2 and the inlet N2 of the cylinder 154 .

The third one-way valve 155 and the fourth one-way valve 156 are disposed between the fourth directional valve 153 and the cylinder 154 . The third one-way valve 155 allows gas to flow from the B port of the fourth directional valve 153 into the outlet E2 and the outlet F2 of the cylinder 154 in one direction. The fourth one-way valve 156 allows the gas to flow from the inlet M2 and the inlet N2 of the cylinder 154 into the A port of the fourth directional valve 153 in one direction.

The pressure sensor 157 is arranged at the outlet of the air tank 151 for detecting the air pressure there. The decompression valve 158 is arranged between the air storage tank 151 and the P port of the third directional valve 152 to reduce the air pressure and ensure safety.

The working principle of the compressed air energy storage power generation system provided in this embodiment is as follows:

During the energy storage process, the wind wheel 110 drives the hydraulic pump 131 to operate under the wind force, and the wind energy is converted into hydraulic energy. The fifth directional valve 1333 is moved to the left position, the hydraulic oil passes through the motor control valve group 133 to drive the hydraulic motor 132 to operate, and the hydraulic motor 132 drives the generator 120 to generate electricity. Simultaneously, the first directional valve 141 moves to the upper or lower position, the second directional valve 142 moves to the lower position, the third directional valve 152 moves to the neutral position, and the fourth directional valve 153 moves to the upper position. The excess hydraulic energy is converted into air pressure energy through the first directional valve 141, the oil cylinder 143, and the cylinder 154 in sequence, and the air pressure energy is stored in the air storage tank 151 for use during peak periods of electricity consumption.

When energy is released, the first directional valve 141 moves to the neutral position, the second directional valve 142 moves to the upper position, the third directional valve 152 moves to the upper or lower position, and the fourth directional valve 153 moves to the upper position. The air pressure energy in the air storage tank 151 is converted into hydraulic energy through the pressure reducing valve 158, the third directional valve 152, the cylinder 154, and the oil cylinder 143 in sequence. The hydraulic energy sequentially passes through the second directional valve 142 and the motor control valve group 133 to drive the hydraulic motor 132 to operate, and the hydraulic motor 132 drives the generator 120 to generate electricity, so as to ensure that sufficient power can be provided during the peak period of power consumption.

The compressed air energy storage power generation system provided in this embodiment first uses the oil cylinder 143 and the cylinder 154 to complete the mutual transformation of hydraulic energy and pneumatic energy, so that the volume of hydraulic oil circulating in the hydraulic module 130 will not change, reducing the Requirements for the hydraulic system; at the same time, the stored air pressure energy only needs to drive the cylinder 154 to complete energy conversion, which reduces the requirements for the pneumatic system and has a simple structure. Secondly, the pneumatic energy storage module 150 does not directly drive the hydraulic motor 132 to drive the generator 120 to generate electricity, but uses the oil cylinder 143 to convert the pneumatic energy into hydraulic energy, which reduces the performance requirements of the pneumatic energy storage module 150 and improves the stability of use. Moreover, the cost is low, the efficiency is high, the energy storage cycle is not limited, and it is applicable to various types of power sources. Finally, the power generation system has convenient and efficient energy storage and energy release, and can flexibly and quickly respond to low-peak and peak periods of electricity consumption, ensuring the stability of electricity consumption, and has a good application prospect.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (10)

1. A compressed air energy storage power generation system, comprising a wind wheel (110) and a generator (120), characterized in that it also includes a hydraulic module (130), a pneumatic energy storage module (150) and a hydraulic-pneumatic conversion module (140 ); the wind wheel (110) is connected to the hydraulic module (130) to convert wind energy into hydraulic energy; the hydraulic module (130) is connected to the generator (120) to convert hydraulic energy to electrical energy; The hydraulic-pneumatic conversion module (140) is connected to the hydraulic module (130) to convert hydraulic energy and pneumatic energy; the pneumatic energy storage module (150) is connected to the hydraulic-pneumatic conversion module (140) to use to store atmospheric energy. 2. The compressed air energy storage power generation system according to claim 1, characterized in that, the hydraulic module (130) includes a hydraulic pump (131) and a hydraulic motor (132); the wind wheel (110) and the The hydraulic pump (131) is connected; the two ends of the hydraulic pump (131) communicate with the two ends of the hydraulic motor (132); the hydraulic motor (132) is connected with the generator (120). 3. The compressed air energy storage power generation system according to claim 2, characterized in that the hydropneumatic conversion module (140) includes a first directional valve (141), a second directional valve (142), an oil cylinder (143) , the first one-way valve (144) and the second one-way valve (145); Port P and port T of the first directional valve (141) communicate with the inlet (U) and outlet (V) of the hydraulic motor (132) respectively, and port A and port B of the first directional valve (141) communicate with the inlet (U) and outlet (V) of the hydraulic motor (132) respectively. The ports communicate with the two working chambers of the oil cylinder (143) through the two outlets (E1, F1) of the oil cylinder (143); Port P and port T of the second directional valve (142) communicate with the inlet (U) and outlet (V) of the hydraulic motor (132) respectively, and port A of the second directional valve (142) communicates with the inlet (V) of the hydraulic motor (132). The two outlets (S1, Q1) of the oil cylinder (143) are communicated, and the B port of the second directional valve (142) is communicated with the two inlets (G1, H1) of the oil cylinder (143); The first one-way valve (144) and the second one-way valve (145) are arranged between the second one-way valve (142) and the oil cylinder (143); the first one-way valve ( 144) Make the hydraulic oil flow into the port A of the second directional valve (142) from the two outlets (S1, Q1) of the oil cylinder (143); the second one-way valve (145) makes the hydraulic oil One-way flow into the two inlets (G1, H1) of the oil cylinder (143) from port B of the second directional valve (142); The piston rod of the oil cylinder (143) is connected with the pneumatic energy storage module (150). 4. The compressed air energy storage power generation system according to claim 3, characterized in that, the pneumatic energy storage module (150) includes an air storage tank (151), a third directional valve (152), a fourth directional valve ( 153), cylinder (154), the third one-way valve (155) and the fourth one-way valve (156); The piston rod of the cylinder (154) is hinged into one with the piston rod of the oil cylinder (143); The two inlets (G2, H2) of the cylinder (154) communicate with the B port and the A port of the third directional valve (152) respectively, and the T port of the third directional valve (152) is used for communicating gas source, the P port of the third directional valve (152) communicates with the gas storage tank (151); The T port of the fourth directional valve (153) is used to communicate with the gas source, the P port of the fourth directional valve (153) is in communication with the gas storage tank (151), and the fourth directional valve (153) Port B of the valve is in communication with the two outlets (E2, F2) of the cylinder (154), and port A of the fourth directional valve (153) is in communication with the two inlets (M2, N2) of the cylinder (154). ; The third one-way valve (155) and the fourth one-way valve (156) are arranged between the fourth one-way valve (153) and the cylinder (154); the third one-way valve ( 155) Make the gas flow into the two outlets (E2, F2) of the cylinder (154) from the B port of the fourth directional valve (153); the fourth one-way valve (156) makes the gas flow from the The two inlets (M2, N2) of the cylinder (154) flow into the port A of the fourth directional valve (153) in one direction. 5. The compressed air energy storage power generation system according to claim 2, characterized in that, the hydraulic module (130) further includes a motor control valve group (133); the motor control valve group (133) includes a first plug Loading valve (1331), second cartridge valve (1332) and fifth directional valve (1333); One oil port (X1) of the first cartridge valve (1331) communicates with one end of the hydraulic pump (131), and the other oil port (Y1) of the first cartridge valve (1331) communicates with the One end of the hydraulic motor (132) is connected, and the control port (Z1) of the first cartridge valve (1331) is connected with the B port of the fifth directional valve (1333); One oil port (X2) of the second cartridge valve (1332) communicates with the other end of the hydraulic pump (131), and the other oil port (Y2) of the second cartridge valve (1332) communicates with the other end of the hydraulic pump (131). One end of the hydraulic motor (132) is connected, and the control port (Z2) of the second cartridge valve (1332) is connected with the A port of the fifth directional valve (1333); The P port of the fifth directional valve (1333) is a control oil port, and the T port of the fifth directional valve (1333) is an oil drain port. 6. The compressed air energy storage power generation system according to claim 2, characterized in that, the hydraulic module (130) further includes an oil replenishment system (134); the oil replenishment system (134) includes a flush overflow valve ( 1341), charge pump (1342) and charge tank (1343); The oil inlet port of the flushing overflow valve (1341) communicates with the oil suction port of the hydraulic pump (131), and the oil outlet port of the flushing overflow valve (1341) communicates with the oil supply tank (1343); The oil outlet of the charge pump (1342) communicates with the oil suction port of the hydraulic pump (131), and the oil suction port of the charge pump (1342) communicates with the charge oil tank (1343). 7. The compressed air energy storage power generation system according to claim 2, characterized in that, the hydraulic module (130) further includes a safety valve (135); the two ends of the safety valve (135) are respectively connected to the hydraulic pressure Both ends of the pump (131) are communicated. 8. The compressed air energy storage power generation system according to claim 3, characterized in that, the hydropneumatic conversion module (140) further comprises a first proximity switch (146) and a second proximity switch (147); A proximity switch (146) and the second proximity switch (147) are respectively arranged on the two working chambers of the oil cylinder (143), and the first proximity switch (146) and the second proximity switch (147) ) is used to control the forward or reverse movement of the piston rod of the oil cylinder (143) when the piston rod of the oil cylinder (143) moves to the limit position. 9. The compressed air energy storage power generation system according to claim 4, characterized in that, the pneumatic energy storage module (150) further comprises a pressure sensor (157); the pressure sensor (157) is arranged on the air storage The outlet of the tank (151). 10. The compressed air energy storage power generation system according to claim 4, characterized in that, the pneumatic energy storage module (150) further comprises a pressure reducing valve (158); the pressure reducing valve (158) is set on the Between the gas tank (151) and the third directional valve (152).