Dynamic response characteristics of semi-infinite pressure tube
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摘要:
在燃烧不稳定试验中,通常通过半无限长引压管对振荡压力进行取样,采样到的振荡压力幅值有所衰减且相位存在延迟。采用管道声波传播理论分析、试验研究与数值模拟相结合的方法,研究了引压管直径及安装座结构等对半无限长引压管动态响应特性的影响规律,分析了引压管测量压力脉动的增益及相位差等参数。结果表明:当半无限长引压管的长度不足时将会引起响应曲线的末端反射振荡;减小引压管直径将会增加压力幅值衰减,此时可以适当缩短半无限长引压管长度;安装座结构将导致引压管的幅频特性及相频特性存在安装座反射振荡,安装座空腔体积越大则振荡越剧烈。此外,通过理论分析和数值模拟分析了安装座引起响应振荡的原因。研究内容可准确预测、修正引压管的测量偏差,对于燃气轮机燃烧室压力脉动的测量具有参考意义。
Abstract:In the combustion instability experiment, oscillation pressure was usually sampled by the semi-infinite pressure tube, the amplitude of the sampled oscillation pressure was attenuated and the phase was delayed. Therefore, the method of combining theoretical analysis of acoustic propagation in tube, experimental research and numerical simulation was adopted to study the influences of the diameter of the semi-infinite pressure tube and the structure of the mounting seat on the dynamic response characteristics of the semi-infinite pressure tube, and the parameters such as gain and phase difference of the oscillation pressure measured by the semi-infinite pressure tube were analyzed. The results showed that when the length of the semi-infinite pressure tube was insufficient, it caused oscillation in the response curve produced by terminal reflection. Reducing the diameter of the semi-infinite pressure tube could increase the pressure amplitude attenuation, so the length of the semi-infinite pressure tube can be appropriately shortened. Mounting seat structure could lead to the oscillation in the amplitude-frequency characteristics and phase-frequency characteristics of the semi-infinite pressure tube due to the mounting seat reflection, and the larger volume of mounting seat cavity indicated the more stronger oscillation. In addition, the reason of response curve oscillation caused by mounting seat was analyzed by theoretical analysis and numerical simulation. The research content can accurately predict and correct the measurement deviation of the semi-infinite pressure tube, which has reference significance for the measurement of oscillation pressure in the gas turbine combustor.
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表 1 试验工况
Table 1. Experiment conditions
工况 半无限长
引压管长度/m安装座结构 末端边界条件 1 10 小孔安装座 开放 2 10 通孔安装座 开放 3 30 小孔安装座 开放 4 30 通孔安装座 开放 5 30 小孔安装座 封闭 6 30 通孔安装座 封闭 -
[1] 李继超,王偲臣,林峰,等. 一种容腔效应标定技术及其在高频响动态探针中的应用[J]. 航空动力学报,2011,26(12): 2749-2756.LI Jichao,WANG Sichen,LIN Feng,et al. A technique to calibrate cavity effect in unsteady pressure probes with high frequency response[J]. Journal of Aerospace Power,2011,26(12): 2749-2756. (in Chinese) [2] KANG J S,YANG S S. Fast-response total pressure probe for turbomachinery application[J]. Journal of Mechanical Science and Technology,2010,24(2): 569-574. doi: 10.1007/s12206-009-1223-5 [3] 王维,唐磊,王棋. 压力测试管道管腔效应研究[J]. 计测技术,2012,32(增刊1): 81-86.WANG Wei,TANG Lei,WANG Qi. Study on lumen effect of pressure testing pipeline[J]. Metrology & Measurement Technology,2012,32(Suppl.1): 81-86. (in Chinese) [4] SEWELL J B,SOBIESKI P A. Monitoring of combustion instabilities: calpine’s experience[J]. Progress in astronautics and aeronautics,2005,210: 147-162. [5] 杨林,王偲臣,林峰,等. 基于半无限引压管效应的动态压力测量方法[J]. 航空动力学报,2014,29(10): 2457-2463.YANG Lin,WANG Sichen,LIN Feng,et al. Method of dynamic pressure measurement based on semi-infinite pressure tube effect[J]. Journal of Aerospace Power,2014,29(10): 2457-2463. (in Chinese) [6] GAO Longlong,HU Jinlong,DU Jingmin,et al. Dynamic response characteristics of vacuum pressure measurement system with pneumatic long-thin tube[J]. Vacuum,2020,171: 108995. doi: 10.1016/j.vacuum.2019.108995 [7] YANG Jun, WANG Yufang, LI Cheng. Dynamic modeling of pressure pipelines and signal reconstruction[C]//Proceedings of the 2011 First International Conference on Instrumentation, Measurement, Computer, Communication and Control. New York: ACM, 2011: 78-81. [8] 包家立. 带引压管和容腔的压力传感器现场动态标定的探讨[J]. 仪器仪表学报,1990,11(1): 65-71.BAO Jiali. A discussion of the dynamic calibration on the spot for pressure transducer with impulse tube and chamber[J]. Chinese Journal of Scientific Instrument,1990,11(1): 65-71. (in Chinese) [9] 巩岁平,樊嘉峰,徐芳,等. 两种动态压力测量装置试验对比研究[J]. 燃气涡轮试验与研究,2017,30(6): 37-42. doi: 10.3969/j.issn.1672-2620.2017.06.008GONG Suiping,FAN Jiafeng,XU Fang,et al. Experimental comparison research on two measuring devices of dynamic pressure[J]. Gas Turbine Experiment and Research,2017,30(6): 37-42. (in Chinese) doi: 10.3969/j.issn.1672-2620.2017.06.008 [10] 李博,杨军,石玉松,等. 不同校准装置对引压管腔动态特性校准[J]. 航空动力学报,2019,34(12): 2559-2568.LI Bo,YANG Jun,SHI Yusong,et al. Calibration of dynamic characteristics of pressure tube cavity by different calibration devices[J]. Journal of Aerospace Power,2019,34(12): 2559-2568. (in Chinese) [11] 李博,张鹤宇,杨军. 不同环境因素对引压管腔动态特性影响[J]. 航空动力学报,2020,35(10): 2159-2165. doi: 10.13224/j.cnki.jasp.2020.10.016LI Bo,ZHANG Heyu,YANG Jun. Effect of different environmental factors on dynamic characteristics of pressure transmission pipe[J]. Journal of Aerospace Power,2020,35(10): 2159-2165. (in Chinese) doi: 10.13224/j.cnki.jasp.2020.10.016 [12] 蔡菁,袁俊先,宋寒. 引压管腔对动态压力校准的影响分析[J]. 计测技术,2013,33(3): 61-63. doi: 10.3969/j.issn.1674-5795.2013.03.016CAI Jing,YUAN Junxian,SONG Han. Analysis of the influence of pressure-drawing tube cavity on dynamic pressure calibration[J]. Metrology & Measurement Technology,2013,33(3): 61-63. (in Chinese) doi: 10.3969/j.issn.1674-5795.2013.03.016 [13] 石玉松,杨军,李博. 引压管腔动态特性及其校准研究现状[J]. 计测技术,2018,38(6): 2-5.SHI Yusong,YANG Jun,LI Bo. Review of dynamic characteristics and the calibrations of pressure pipelines[J]. Metrology & Measurement Technology,2018,38(6): 2-5. (in Chinese) [14] WHITMORE S, PETERSEN B, SCOTT D. A dynamic response model for pressure sensors in continuum and high Knudsen number flows with large temperature gradients[R]. AIAA 96-0563, 1996 [15] 李博,杨军,张鹤宇,等. 带引压管腔的压力测量系统动态校准技术研究[J]. 计测技术,2021,41(2): 149-154.LI Bo,YANG Jun,ZHANG Heyu,et al. Research on dynamic calibration of pressure measurement system with pressure pipe[J]. Metrology & Measurement Technology,2021,41(2): 149-154. (in Chinese) [16] 吕永志. 压力测试取样管路系统动态特性分析及畸变信号的修正[D]. 太原: 中北大学, 2017.LYU Yongzhi. Analysis of dynamic characteristics of pressure sampling pipeline system and correction of distortion signal[D]. Taiyuan: North University of China, 2017. (in Chinese) [17] YOSHIDA A,TAMURA Y,KURITA T. Effects of bends in a tubing system for pressure measurement[J]. Journal of Wind Engineering and Industrial Aerodynamics,2001,89(14/15): 1701-1716. [18] HURST A M,VANDEWEERT J. An experimental and theoretical investigation of wave propagation in teflon and nylon tubing with methods to prevent aliasing in pressure scanners[J]. Journal of Engineering for Gas Turbines and Power,2013,135(10): 101602. doi: 10.1115/1.4025004 [19] SVETE A,KUTIN J. Optimal dimensions of connecting tubes for dynamic measurements of pressure[J]. Journal of Physics:Conference Series,2018,1065: 162006. doi: 10.1088/1742-6596/1065/16/162006 [20] 杨军, 樊尚春, 李程. 介质与压力对测压管道动态特性影响分析[C]//第十三届全国敏感元件与传感器学术会议论文集. 太原: 中国仪器仪表学会, 2014: 625-629. [21] 吕崇德. 热工参数测量与处理[M]. 2版. 北京: 清华大学出版社, 2001. [22] 何琳. 声学理论与工程应用[M]. 北京: 科学出版社, 2006. [23] 程建春. 声学原理[M]. 2版. 北京: 科学出版社, 2019. -