Special air compressor system for supplying air to constant-pressure air storage source

Abstract

The invention belongs to the technical field of power storage and particularly relates to a special air compressor system for supplying air to a constant-pressure air storage source. The system comprises a motor M, a water turbine G and a screw-type air compressor C which are connected sequentially and coaxially; one end of the water turbine G is connected with the bottom of a pressure vessel A bythe aid of a high-pressure liquid pipeline D2; a flow valve F is mounted on the high-pressure liquid pipeline D2; the top of the pressure vessel A is connected with an exhaust opening P3 of the screw-type air compressor C by the aid of a high-pressure air pipeline D1; the other end of the water turbine G and a water inlet P2 of the screw-type air compressor C are connected with a low-pressure reservoir B separately; and an air inlet P1 of the screw-type air compressor C is connected with the atmosphere. During operation, the screw-type air compressor C is driven by the motor M to rotate, outside air and low-pressure water flow into the air compressor to be mixed and compressed and then are sent to the pressure vessel A, meanwhile, the flow valve F is controlled to discharge high-pressurewater in the equal volume in the pressure vessel A to the water turbine G, and the water turbine G drives the screw-type air compressor C to run continuously by the aid of the high-pressure water.

Description

technical field [0001] The invention belongs to the technical field of electric power storage, and in particular relates to a special air compressor system for supplying gas to a constant-pressure gas storage source. Background technique [0002] The compressed air energy storage technology in the prior art includes the energy storage process and the energy release process. The principle is: in the energy storage process, the air compressor compresses the air driven by electric energy, and the electric energy is converted into the internal energy of the compressed air Stored in the gas storage container; during the energy release process, the compressed air in the gas storage container is discharged, expands in the air expander to do work, drives the large shaft to rotate, and then drives the generator to generate electricity, thereby outputting electric energy to the outside world. [0003] Pumped storage is a more commonly used energy storage method in the existing technol...

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Problems solved by technology

[0004] Aiming at the low compression efficiency of the existing energy storage system at low pressure and the continuous fluctuation of the air supply pressure of the screw air compressor technology, the present invention proposes a special air compressor system for supplying air to the constant pressure air storage source, including sequentially Coaxially connected: motor M, hydraulic turbine G and screw air compressor C, and one end of hydraulic turbine G is connected to the bottom of pressure vessel A through high-pressure liquid pi

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