Single valve expander system capable of realizing isothermal expansion and method

An isothermal expansion and expander technology, applied in mechanical equipment, engine components, machines/engines, etc., can solve problems such as affecting the normal operation of the machine, increasing costs, and frosting of the exhaust holes, and achieves the improvement of output power per unit of working fluid, The effect of reducing the number of expansion stages and improving the overall efficiency
CN104358593AActive Publication Date: 2015-02-18中储国能(北京)技术有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
中储国能(北京)技术有限公司
Publication Date
2015-02-18

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Abstract

The invention relates to a single valve expander system capable of realizing isothermal expansion and a method. The single valve expander system can be applied to a small-sized / micro compressed air energy storage system or other power systems; a quasi isothermal expansion process is realized by ejecting vaporous or foamy mediums into gas in the expansion process, so that the output work of unit working mediums is improved, and the overall efficiency of the system is improved. Specifically, the single valve expander system is characterized in that an air inlet valve and an annular ejector are mounted at the top of an air cylinder, the air inlet valve is communicated with an external high-pressure gas working medium source, and the annular ejector is communicated with an external heating medium source system; in the working process of an expander, heated heating mediums are atomized or form foam and are fed into the air cylinder at a certain mass flow rate. Compared with a traditional single valve expander, the single valve expander system has the benefits that the expansion process can obviously deviate from an adiabatic process, the quasi isothermal expansion process close to the isothermal temperature is obtained, and the output work of the unit working mediums and the working efficiency of the expander are improved.
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Description

technical field

[0001] The present invention relates to a single-valve expander system and method applicable to isothermal expansion of small / miniature compressed air energy storage systems or other power systems. The expander can spray mist or foamy liquid into the gas in the expansion process Realize the quasi-isothermal expansion process, thereby realizing isothermal energy release, increasing the work output per unit of expansion working medium, and improving the overall efficiency of the system. Background technique

[0002] Expanders are widely used in various power output systems, such as steam power cycle, gas turbine, organic Rankine cycle, compressed air energy storage system, etc. The isothermal expander can obtain greater output power and higher system efficiency, which has attracted people's attention day by day. The research field has initially involved the fields of isothermal diesel engine, isothermal compressed air energy storage system and water spray evapo...

Claims

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