变海拔两级离心压气机特性试验研究

张众杰; 刘瑞林; 杨春浩; 张君仪; 焦宇飞; 蔡骏; 夏南龙

车用发动机 ›› 2020, Vol. 0 ›› Issue (2) : 42-48.

栏目

变海拔两级离心压气机特性试验研究

张众杰¹，刘瑞林¹，杨春浩²，张君仪³，焦宇飞¹，蔡骏⁴，夏南龙¹

作者信息 +

Experimental Investigation on Characteristics of Two-Stage Centrifugal Compressor at Variable Altitudes

ZHANG Zhongjie¹,LIU Ruilin¹,YANG Chunhao²,ZHANG Junyi³,JIAO Yufei¹,CAI Jun⁴,XIA Nanlong¹

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文章历史 +

摘要

针对高原环境工作的两级增压器，对高、低压级离心压气机不同进口条件（低气压、低雷诺数）进行了理论分析。基于自主搭建的两级离心压气机变海拔特性试验台，对柴油机新匹配高、低压级压气机进行模拟0 m，2 500 m，5 500 m进气条件下的特性试验，采用实际质量流量比较了不同海拔下两级离心压气机的效率和流量特性。结果表明：随着海拔升高，进气环境压力和温度降低，雷诺数减小，压气机稳定工作流量范围缩小，且向小流量范围方向移动。与海拔0 m相比较，海拔5 500 m时低压级压气机质量流量减小25%~36%，效率降低1%~3.8%，压气机进口气体雷诺数降低51%。海拔5 500 m时高压级压气机质量流量减小26%~34%，效率降低1%~2.5%，压气机进口气体雷诺数降低35%。

Abstract

For a two-stage centrifugal compressor working at high altitudes, the influences of different inlet conditions including low pressure and small Reynolds number on the high and low pressure stage compressor were analyzed theoretically. The characteristics of the high and low pressure stage compressors were studied at simulated altitudes of 0 m,2 500 m and 5 500 m on self-developed characteristic test bed of two-stage centrifugal compressor. Efficiency and flow characteristics of two-stage compressors were discussed by using mass flow rate at different altitudes. The results showed that the steady flow range of compressor contracted and moved to a small flow range with the decrease of Reynolds number caused by the decrease of inlet pressure and temperature at high altitudes. Compared with those at 0 m, mass flow rate, adiabatic efficiency and Reynolds number decreased by 25%-36%，1%-3.8% and 51% respectively for the low pressure stage compressor and by 26%-34%, 1%-2.5% and 35% respectively for the high stage compressor at 5 500 m.

导出引用

张众杰，刘瑞林，杨春浩，张君仪，焦宇飞，蔡骏，夏南龙.

变海拔两级离心压气机特性试验研究

[J]. 车用发动机. 2020, 0(2): 42-48

ZHANG Zhongjie,LIU Ruilin,YANG Chunhao,ZHANG Junyi,JIAO Yufei,CAI Jun,XIA Nanlong. Experimental Investigation on Characteristics of Two-Stage Centrifugal Compressor at Variable Altitudes[J]. Vehicle Engine. 2020, 0(2): 42-48