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Compressed air type energy accumulation stable power generation device adopting liquid piston

A liquid piston and power generation device technology, applied in the field of energy storage and stable power generation devices, can solve the problems of limited pressure level and low conversion efficiency, and achieve the effects of reducing friction, high energy storage density, and improving energy conversion efficiency

Inactive Publication Date: 2012-06-20
ZHEJIANG UNIV
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AI Technical Summary

Problems solved by technology

The energy conversion efficiency of traditional compressed air energy storage is low, and its pressure level is limited, so the energy storage stable power generation method combining liquid and gas is adopted

Method used

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  • Compressed air type energy accumulation stable power generation device adopting liquid piston
  • Compressed air type energy accumulation stable power generation device adopting liquid piston

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0014] As shown in the drawings, the present invention includes an open accumulator 1, two liquid piston chambers 2, 3, a variable hydraulic motor 4, a variable hydraulic pump 5, an electromagnetic reversing valve 6, a synchronous alternator 7, and an air storage chamber 9. Five cut-off valves 10, 11, 12, 13, 14, 15 and adjustable throttle valve 17; the main shaft of the variable hydraulic motor 4 is connected to the main shaft of the synchronous alternator 7 through the main shaft of the variable hydraulic pump 5; the variable hydraulic motor 4 The input port is divided into two routes, one route is connected to the open accumulator 1 through the adjustable throttle valve 17, and the other route is connected to the input of the wave energy hydraulic transmission device; the outlet of the variable hydraulic pump 5 is respectively connected to the first ...

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Abstract

The invention discloses a compressed air type energy accumulation stable power generation device adopting a liquid piston. A variable hydraulic motor is connected with an alternating-current generator by a variable hydraulic pump; one path of the input port of the hydraulic motor is connected with an opened type energy accumulator by an adjustable throttling value, and the other path of the input port of the hydraulic motor is connected with the input of a wave energy hydraulic transmission device; the outlet of the hydraulic pump passes through an electromagnetic diverting valve and is respectively connected with two liquid piston cavities; the two liquid piston cavities are respectively connected with the opened type energy accumulator by a common pipeline through the first and second check valves, and are respectively connected with a gas storage chamber through third and fourth check valves; and fifth and sixth check valves are connected in series between two pipelines at the inlet ends of the third and fourth check valves, and the serial connection points are connected with an air inlet. According to the invention, the energy conversion efficiency is increased by combining hydraulic and air compression; the gas leakage and friction brought by mechanical sliding seal are reduced by adopting liquid piston type air compression; and the capability for stabilizing the input energy fluctuation is increased by adopting the opened type energy accumulator, and is adjusted according to the working condition.

Description

technical field [0001] The invention relates to an energy storage stable power generation device, in particular to a compressed air type energy storage stable power generation device using a liquid piston. Background technique [0002] The development of renewable energy is the key to solving the energy crisis at present. In the development of renewable energy generation methods, such as the use of wave energy, ocean current energy, etc., due to the instability of the captured energy, the input of the power generation device is unstable, resulting in There are many problems to be solved urgently in many aspects such as conversion efficiency, stability, operation and maintenance. The stabilization technologies currently used include the use of inertial wheel energy storage, high-efficiency battery energy storage (BES), electromagnetic energy storage (SMES), etc., but these methods are not enough to solve the problem. In terms of capacity, compressed air energy storage (CAES) ...

Claims

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Application Information

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IPC IPC(8): F03B13/22
CPCY02E10/38Y02E10/30
Inventor 鲍经纬李伟张大海林勇刚黄炜
Owner ZHEJIANG UNIV
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