引气对高压压气机效率评价影响分析

陈云永; 马昌友; 孙震宇; 陈志龙

doi:10.11729/syltlx20200097

引气对高压压气机效率评价影响分析

doi: 10.11729/syltlx20200097

中国航发上海商用航空发动机制造有限责任公司, 上海 201306

详细信息

作者简介:
陈云永(1979-), 男, 山东青州人, 博士, 研究员。研究方向: 风扇增压级、高压压气机的设计与试验。通信地址: 上海市浦东新区鸿音路77号中国航发上海商用航空发动机制造有限责任公司(201306)。E-mail: chenyy@acae.com.cn

通讯作者:
陈云永, E-mail: chenyy@acae.com.cn

中图分类号: V231.3
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出版历程
- 收稿日期: 2020-08-02
- 修回日期: 2020-09-15
- 刊出日期: 2021-04-01

Effect of bleed on efficiency evaluation of high pressure compressor

AECC Shanghai Commercial Aircraft Engine Manufacturing Co., Ltd., Shanghai 201306, China

摘要

摘要: 在总结压气机温升效率和扭矩效率之间差异性和关联性的基础上，本文对带级间引气的高压压气机两种等熵效率评价方法进行了研究，探讨了级间引气参数对压气机两种等熵效率修正的影响程度，并开展了试验验证。结果表明：压气机存在机械传动损失，使扭矩效率总是低于温升效率；引入级间引气参数修正前后的压气机温升效率差异不大，变化幅度在±0.5%以内；但引入级间引气参数修正后的压气机扭矩效率明显降低，但相对下降幅度不超过总引气率，降低程度与引气率和引气所在级位置相关；当压气机进口侧进行较大流量的级间引气时，应对扭矩效率进行修正，否则可能出现扭矩效率大于温升效率的现象。
- 轴流式压气机 /
- 等熵效率 /
- 扭矩效率 /
- 级间引气 /
- 温升效率
Abstract: On the basis of summarizing the differences and correlations between temperature rise efficiency and torque efficiency, two kinds of isentropic efficiency evaluation methods for the high pressure compressor with inter stage bleed are studied in this paper. The influence of inter stage bleed parameters on the two isentropic efficiency corrections is discussed, and the experimental verification is carried out. The results show that: the torque efficiency is always lower than the temperature rise efficiency due to the mechanical transmission loss of the compressor; the temperature rise efficiency of the compressor before and after the correction of the inter stage bleed parameters has no significant difference, and the variation range is within ±0.5%; considering the correction of inter stage bleed parameters, the torque efficiency of the compressor can be significantly reduced, but the relative decrease is not more than the total bleed rate, and the reduction degree is related to the bleed rate and the stage position where the bleed is located; when the inter stage bleed with a large flow rate is conducted at the inlet side of the compressor, the torque efficiency should be corrected, otherwise the torque efficiency may be greater than the temperature rise efficiency.
- axial flow compressor /
- isentropic efficiency /
- torque efficiency /
- inter-stage bleeding /
- temperature rise efficiency

HTML全文

图 1 压气机输入功传递示意图

Figure 1. Compressor input power transfer diagram

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图 2 带级间引气的十级压气机试验件示意图

Figure 2. Schematic diagram of test piece of ten stage compressor with interstage bleed

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图 3 引气效率变化对压气机温升效率的影响趋势

Figure 3. Effect of bleed efficiency variation on compressor temperature rise efficiency

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图 4 引气率变化对压气机温升效率的影响

Figure 4. Effect of bleed rate variation on compressor temperature rise efficiency

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图 5 压气机引气结构及测量位置示意图

Figure 5. Schematic of compressor bleed structure and measurement position

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图 6 压气机扭矩效率修正系数计算示意图

Figure 6. Calculation diagram of compressor torque efficiency correction

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图 7 压气机试验状态

Figure 7. Compressor test status

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图 8 引气修正前后压气机效率特性对比

Figure 8. Comparison of compressor efficiency characteristics before and after bleed correction

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图 9 引气修正前后压气机温升效率、扭矩效率的变化量

Figure 9. Variation of temperature rise efficiency and torque efficiency of compressor before and after bleed correction

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表 1 引气出口参数测量不同位置对比

Table 1. Comparison of different positions for parameter measurement of bleed outlet

测量位置(截面)	测量容易性	测量方式	备注
级静叶前缘(x1)	可测量	叶型探针	引气损失低估
级出口(x2)	不易测量	/	空间狭窄，不安全
引气缝(x3)	不易测量	/	空间狭窄，不安全
引气管口(x4)	可测量	梳状探针	/
引气系统管道(x5)	可测量	梳状探针	引气损失高估

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表 2 不同位置引气对压气机扭矩效率修正的影响

Table 2. Effect of different bleed positions on compressor torque efficiency correction

引气位置	引气率	引气压比	相对等熵加功量	修正贡献量
第1级	0.34%	1.7	0.121	6.6%
第4级	4.24%	5.0	0.431	53.6%
第7级	5.73%	10.0	0.688	39.8%

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表 3 引气关闭前后压气机温升效率和扭矩效率变化

Table 3. Change of temperature rise efficiency and torque efficiency of compressor before and after bleed off

状态点	状态说明	温升效率	扭矩效率	效率偏差量
A	引气修正前	83.28%	84.82%	－1.54%
A	引气修正后	83.53%	81.00%	2.53%
B	不引气	80.46%	78.31%	2.15%

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