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微小型压缩空气储能系统用涡旋压缩机流动特性研究

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以空气为工质,基于计算流体动力学方法,对无油空气涡旋压缩机在变工况运行条件下进行了三维非稳态数值模拟.研究发现:动静涡旋齿之间存在的径向间隙,会使得压缩机工作腔内温度、流速和压力的分布不规律;增大转速,不但可以增加涡旋压缩机的质量流量,而且还可以减小切向泄漏量,进而提高压缩机的工作效率;排气压力过大,会降低涡旋压缩机的基本输出性能;在低转速下,过高的排气压力会使得压缩机排气口出现"净回流"现象.
Research on Flow Characteristics of Scroll Compressor for Micro Compressed Air Energy Storage System
Air was used as the working fluid,and based on computational fluid dynamics method,a 3D unsteady numerical simula-tion of the oil-free air scroll compressor under variable operating conditions was carried out.It is found that the radial gap between the orbiting and fixed scroll teeth will make the distribution of temperature,velocity and pressure in the working chamber of the compressor irregular;increasing the rotational speed can not only increase the mass flow of the scroll compressor,but also reduce the amount of tan-gential leakage,thereby improving the working efficiency of the compressor;if the discharge pressure is too large,it will reduce the basic output performance of the scroll compressor;at low rotational speed,the excessive discharge pressure will make the compressor occur a"net backflow"phenomenon at the outlet.

micro compressed air energy storage system(Micro-CAES)scroll compressornumerical simulationcomputational fluid dynamicsvariable working conditions

杨小亮、孙健、董辉、朱兵国、巨静斋、彭斌

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兰州理工大学机电工程学院,甘肃兰州 730050

兰州兰石石油装备工程股份有限公司,甘肃兰州 730314

机械工业油气钻采装备工程研究中心,甘肃兰州 730314

甘肃省油气钻采装备工程研究中心,甘肃兰州 730314

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微小型压缩空气储能系统 涡旋压缩机 数值模拟 计算流体动力学 变工况

国家自然科学基金面上项目国家自然科学基金地区科学基金国家重点研发计划-"科技助力经济2020"重点专项兰州市人才创新创业项目甘肃省科技计划项目

5167525451966009SQ2020YFF04209892020-RC-2320YF8GA057

2024

10.3969/j.issn.1001-3881.2024.01.023

机床与液压
中国机械工程学会 广州机械科学研究院有限公司

机床与液压

CSTPCD北大核心
影响因子：0.32
ISSN：1001-3881
年,卷(期)：2024.52(1)
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