The invention discloses a buoyancy feedback type hydraulic constant-pressure energy storage and release system and method. The bottom of an air storage tank is connected with a water surface floatingplatform by using a cable to bypass a fixed pulley, and when the system stores and releases air, the buoyancy feedback effect of the water surface floating platform can ensure that the air pressure inthe air storage tank is constant. The length of the cable is adjusted through a motor to adjust the working depth of the air storage tank, so that the working pressure of the system is set. In the power utilization valley period, the system drives the motor-generator through the electric energy of the power grid and drives the multi-stage air compressor to work, and the multi-stage air compressorcompresses the high-pressure air into the constant-pressure air storage tank; and in the power utilization peak period, the high-pressure air in the constant-pressure air storage tank is released, the high-pressure air expands and acts in a turbine, and the turbine drives the motor-generator to output electric energy. When the system is static, the air pressure in the constant-pressure air storage tank is kept constant by utilizing the static pressure characteristic of water. According to the invention, the static pressure characteristic of water and the mechanical feedback effect of buoyancyare utilized, so that constant-pressure air storage and release are realized.
本发明公开一种浮力反馈式水力恒压储释能系统及方法。储气罐底部使用缆绳绕过定滑轮与水面浮动平台连接,系统储气与释气时,水面浮动平台的浮力反馈作用可以保证储气罐中气压恒定。缆绳通过电动机调节长度,来调整储气罐工作深度,从而设定系统的工作压力。在用电低谷期,系统用电网的电能驱动电动机‑发电机并带动多级压气机工作,多级压气机将高压气体压缩于恒压储气罐中;在用电高峰期,将恒压储气罐中的高压气体释出,高压气体在透平中膨胀做功,透平带动电动机‑发电机输出电能。系统静止时,恒压储气罐中的气压利用水的静压特性得以保持恒定。本发明利用水的静压特性与浮力的力学反馈作用,从而实现恒压储气与释气。
Buoyancy feedback type hydraulic constant-pressure energy storage and release system and method
一种浮力反馈式水力恒压储释能系统及方法
2020-12-25
Patent
Elektronische Ressource
Chinesisch
IPC: | F04B Verdrängerkraft- und Verdrängerarbeitsmaschinen für Flüssigkeiten , POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS / B01D SEPARATION , Trennen / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / F01D Strömungsmaschinen [Kraft- und Arbeitsmaschinen oder Kraftmaschinen], z.B. Dampfturbinen , NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES |
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