压气机性能录取中状态稳定的判别方法
A method for judging state stability in compressor performance evaluation
吴森林 1韩壮壮 1高杰 1张晓良1
作者信息
- 1. 中国航发四川燃气涡轮研究院,四川 绵阳 621000
- 折叠
摘要
为准确高效地获取压气机性能参数,以多台份压缩部件为对象,分析了试验过程中各性能参数所需稳定时间及状态稳定特性;以压气机出口总温为判断参数,开展了压气机试验状态稳定的判别方法研究.结果表明:压气机温升效率相对其他性能参数所需的稳定时间更长、波动幅度更大,并可能伴有低频脉动;出口平均总温的波动幅度随取样时间长度的增加逐渐降低,当采样频率为5Hz时,建议取样时间长度不低于1s;可采用出口总温随稳定时间的线性拟合斜率来判断压气机的稳定状态,推荐对30s内出口平均总温进行线性拟合,并且以连续15s的每秒拟合斜率均在±0.002以内作为试验状态稳定的判别依据.
Abstract
To accurately and efficiently obtain the performance parameters of the compressor,the required stability time and state stability characteristics of each performance parameter during the test process were analyzed with multiple compression components taken as the objects.The total outlet temperature of the compressor was used as the judgment parameter,and a method for judging the stability of the compressor test state was studied.The research results show that the temperature rise efficiency of the compressor requires the longest stability time and largest fluctuation amplitude compared with other performance parameters,and may be accompanied by low-frequency pulsation;the fluctuation amplitude of the average total outlet temperature gradually decreases with the increase of the average sampling time.When the sampling frequency is 5 Hz,it is recommended that the average sampling time not be less than 1 s;the stable state of the compressor can be judged by the linear fitting slope of the total outlet temperature with the stable time.It is recommended that linear fitting be performed on the average total outlet temperature within 30 s,and the fitting slope is within±0.002 for continuous 15 s,which is used as the basis for judging the stability of the test state.
关键词
压气机性能试验/试验状态/温升效率/稳定时间/波动幅度/线性拟合斜率/航空发动机Key words
compressor performance test/test state/temperature rise efficiency/stability time/fluctuation amplitude/linear fitting slope/aero-engine引用本文复制引用
出版年
2024
NETL
NSTL
万方数据