活塞端面强制供油对旋转活塞压缩机性能影响研究

Research on the influence of forced oil supply at roller end face on rotary piston compressor performance

压缩机泵体内泄漏是影响压缩机性能的主要因素之一,通过对旋转压缩机性能仿真得出活塞端面泄漏对压缩机性能影响较大,同时分析得到活塞端面间隙减小可减小端面泄漏,大幅提升压缩机性能,由此提出活塞端面强制供油密封结构,减小活塞端面在压缩机运行过程中实际泄漏间隙,提高压缩机性能。根据理论供油压力、体积流量等计算并结合流体仿真分析确定了强制供油密封结构形式及各结构尺寸,在不影响压缩机可靠性情况下保证强制供油密封结构的有效性,最终通过试验确认活塞端面强制供油密封结构可提高压缩机性能。

Leakage inside the compressor pump is one of the main factors af fecting compressor performance.Through simulation of the performance of rotary compressors,it is found that piston end face leakage has a significant impact on compressor performance.At the same time,it is analyzed that the reduction of piston end face clearance can reduce end leakage and greatly improve compressor performance.Therefore,a piston end face forced oil supply sealing structure is proposed to reduce the actual leakage clearance of piston end face during compressor operation and improve compressor performance.Based on theoretical oil supply pressure,volumetric flow rate,and fluid simulation analysis,the structural form and dimensions of the forced oil supply seal were determined,ensuring the ef fectiveness of the forced oil supply seal structure without af fecting the reliability of the compressor.Finally,it was confirmed through experiments that the forced oil supply seal structure of the piston end face can improve the performance of the compressor.