倒置微带贴片谐振器测量汽轮机湿度的研究
作者:
作者单位:

华北电力大学电气与电子工程学院保定071003

中图分类号:

TM931

基金项目:

中央高校基本科研业务费(2014MS103)资助


Study on turbine wetness measurement by inverted microstrip patch resonator
Author:
Affiliation:

School of Electrical and Electronic Engineering, North China Electric Power University, Baoding 071003, China

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    摘要:

    汽轮机蒸汽湿度的在线测量,对汽轮机的安全、经济运行具有重要的理论意义和实用价值。根据微扰法的基本理论,提出一种结构简单、灵敏度高的倒置微带贴片谐振器,实现汽轮机湿度的准确在线测量。湿蒸汽的湿度变化反应为谐振器介质层介电常数的变化,根据微带贴片谐振器的基本原理,仿真计算不同介电常数下的谐振频率,得到其变化关系曲线;讨论样本厚度、基质厚度和基质介电常数对频率偏移量的影响;设计微带贴片谐振器模型,并分别在HFSS和CST软件下进行仿真。研究及仿真结果表明,微带贴片谐振器模型适用于汽轮机蒸汽湿度的在线测量,蒸汽湿度每变化1%,谐振器频偏约为18 kHz,约为微带缝隙谐振器频偏的3.6倍,有利于蒸汽湿度的准确测量。

    Abstract:

    The online measurement of turbine wetness has great theoretical significance and practical value to the safety and economic operation of steam turbine. According to the basic theory of perturbation method, a method is proposed to realize the turbine wetness measurement by inverted microstrip patch resonator, which has a simple construction with high sensitivity. The dielectric constant changes with the steam wetness change. The resonant frequencies of different dielectric constant are simulated based on the principle of microstrip patch resonator with the wet steam as sample substrate of resonator. The effects of sample thickness, substrate thickness and dielectric permittivity on the frequency offset are discussed. The microstrip patch resonator model is designed and simulated on the HFSS and CST. The study and simulation results show that the model is suitable for the online measurement of steam wetness of steam turbine. When the steam wetness changes 1%, the resonator frequency offset is about 18 kHz, which is about 3.6 times of frequency offset of microstrip slot resonator. The model is conducive to the accurate measurement of the steam wetness.

    参考文献
    [1]宁德亮,高雷,刘新全.流动蒸汽湿度测量方法的研究与比较[J].热能动力工程,2009,24(2):149153. NING D L, GAO L, LIU X Q. Study and comparison of flowingsteam wetness measurement methods[J]. Journal of Engineering for Thermal Energy and Power, 2009, 24(2): 149153.
    [2]张淑娥,赵君超,李永倩,等.空气湿度微波谐振腔测量方法[J].中国电机工程学报,2008,28(2):2732. ZHANG SH E, ZHAO J CH, LI Y Q, et al. Method for air humidity measurement based on microwave resonant cavity[J]. Proceedings of the CSEE, 2008, 28(2): 2732.
    [3]黄竹青,曹小玲,杨继明,等.基于CCD的蒸汽湿度及水滴直径测量[J].光电工程,2010,37(4):3943. HUANG ZH Q, CAO X L, YANG J M, et al. Application of CCD in measuring steam moisture and droplet size[J]. OptoElectronic Engineering, 2010, 37(4): 3943.
    [4]张淑娥,熊华. 谐振腔测量蒸汽湿度不确定性分析改进[J].华北电力大学学报:自然科学版, 2007,34(3):2226. ZHANG SH E, XIONG H. Error analysis and improvement of microwave resonant cavity method in steam turbine exhaust wetness measurement[J]. Journal of North China Electric Power University, 2007, 34(3): 2226.
    [5]ZHANG SH E, XIA Q Y, XIONG H, et al.Wetness measurement theory based on microwave differential technique[C]. 9th International Conference on Electronic Measurement & Instruments (ICEMI),IEEE,2009:579584.
    [6]韩中合,钱江波,田松峰.在线测量汽轮机排汽湿度的微波谐振腔结构优化[J].中国电机工程学报,2009,29 (26):16. HAN ZH H, QIAN J B, TIAN S F. Structure optimizing of microwave resonator for steam wetness online measuring[J]. Proceedings of the CSEE, 2009, 29(26): 16.
    [7]钱江波,韩中合.谐振腔微扰技术测量湿蒸汽两相流的理论分析[J].中国电机工程学报,2012,32(26):7985. QIAN J B, HAN ZH H. Theoretical analysis of cavity perturbation techniques for measuring wet steam towphase flow[J]. Proceedings of the CSEE, 2012, 32(26): 7985.
    [8]张淑娥,成雪松,孙景芳.微带缝隙实现汽轮机蒸汽湿度测量的研究[J].华北电力大学学报,2016,43(1):99103,110. ZHANG SH E, CHENG X S, SUN J F. Study on turbine wetness measurement implementation by microstrip slot[J]. Journal of North China Electric Power University, 2016, 43(1): 99103, 110.
    [9]钱江波,韩中合,张美凤.汽轮机内湿蒸汽两相流介电性质研究[J].中国电机工程学报,2011,31(32):100106. QIAN J B, HAN ZH H, ZHANG M F. Study on dielectric properties of wet steam in turbine[J]. Proceedings of the CSEE, 2011, 31(32): 100106.
    [10]VERMA A K, NASIMUDDIN, OMAR A S. Microstrip resonator sensors for determination of complex permittivity of materials in sheet, liquid and paste forms[J]. IEEE Proceedings  Microwaves, Antennas and Propagation, 2005, 152(1): 4754.
    [11]何存富,闫天婷,宋国荣,等.微带贴片天线应变传感器优化设计研究[J].仪器仪表学报,2017,38(2):361367. HE C F, YAN T T, SONG G R, et al. Design and optimization of a strain sensor based on rectangular microstrip patch antenna[J]. Chinese Journal of Scientific Instrument, 2017, 38(2): 361367.
    [12]TATA U, HUANG H, CARTER R L, et al. Exploiting a patch antenna for strain measurements[J]. Measurement Science and Technology, 2009, 20(1):17.
    [13]WOLFF I, KNOPPIK N. Rectangular and circular microstrip disk capacitors and resonators[J]. IEEE Transactions on Microwave Theory and Techniques, 1974, 10(22): 857864.
    [14]WAN CH H, HOORFAR A. Improved design equations for multilayer microstrip lines[J]. IEEE Microwave and Guided Wave Letters, 2000, 10(6): 223224.
    [15]邱玲,姚振东,刘语嫣.宽带微带天线阵的研究与设计[J].电子测量技术,2016,39(9):2630. QIU L, YAO ZH D, LIU Y Y. Research and design of broadband microstrip antenna array[J]. Electronic Measurement Technology, 2016, 39(39): 2630.
    [16]王燕燕,姜弢,李迎松.基于缺陷微带线结构的三阻带滤波器研究[J].电子测量与仪器学报,2016,30(4):645652. WANG Y Y, JIANG T, LI Y S. Research on a triple stopband filter based on defected microstrip structure[J]. Journal of Electronic Measurement and Instrumentation, 2016, 30(4): 645652.
    [17]张宁,张霞.基于通信卫星的非对称圆环毫米波微带天线[J].国外电子测量技术,2013,32(5):7982. ZHANG N, ZHANG X. Asymmetric ring millimeterwave microstrip antenna based on communications satellite[J].Foreign Electronic Measurement Technology, 2013, 32(5): 7982.
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孙景芳,李永倩,张淑娥.倒置微带贴片谐振器测量汽轮机湿度的研究[J].电子测量与仪器学报,2017,31(8):1274-1280

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  • 在线发布日期: 2017-09-16
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