期刊文献+

正压法音速喷嘴标准装置气源系统设计 被引量:14

Design of the gas source system for sonic nozzle gas flow standard device based on positive pressure method
在线阅读 下载PDF
导出
摘要 为提高正压法音速喷嘴标准装置压力和流量稳定性能,提出了正压法气源系统设计的方法,设计包括气源及压缩气体净化系统,以及气源稳压系统。针对空压机出口气体特点,净化系统采用水冷型后置冷却器、高效除油器、精密过滤器、冷干机及吸干机组合的方式,并合理选择净化系统各部分参数,使得压缩空气达到-65℃左右的压力露点。系统采用自力式调压阀与稳压罐实现稳压功能,并用各个参量评估系统压力、流量稳定性能指标。最后通过实验验证设计效果,结果表明在同一流量点,滞止压力稳定性可以保持在0.2%以内,流量控制在0.03%以内,可以满足气体流量的检定需求。 In order to improve the presure and flow rate stability of the sonic nozzle gas flow standard device based on positive pressure method, an air source system consisting of purification system and stable pressure system is presented. The after cooler, degreaser, accurate filter, refrigeration drier and absorbing type desiccators are included in the purification system. Through reasonably choosing the parameters of the purification system, the dew point of the compressed air could reach -65℃. Gasholders and self-operated pressure regulating valves are used in the stable pressure system. The stabilities of pressure and flow-rate are analyzed and evaluated with the parameters of the air source system. Experiment was carried out to verify the design. Experiment results show that the uncertainty of the pressure is within 0.2% and the stability of the flow-rate is within 0.03% , which satisfies the design goal.
出处 《仪器仪表学报》 EI CAS CSCD 北大核心 2012年第6期1364-1371,共8页 Chinese Journal of Scientific Instrument
基金 国家自然科学基金(61072101) 新世纪优秀人才支持计划(NCET-10-0621) 天津市自然科学基金(09JCYBJC02000)资助项目
关键词 音速喷嘴 正压法 气源 净化系统 稳压系统 sonic nozzle positive pressure method air source purification system stable pressure system
作者简介 王超,分别于1996、1999和2002年在天津大学获得学士、硕士和博士学位,现为天津大学教授,主要研究方向为电学层析成像、多相流测量和生物阻抗检测。E-mail:wangchao@tju.edu.cn丁红兵,分别于2009和2011年在天津大学获得学士和硕士学位,现为天津大学博士研究生,主要研究方向为正压法音速喷嘴气体流量标准装置。E-mml:hbding@Ou.edu.cn
  • 相关文献

参考文献15

  • 1于华伟,张永胜,刘彦军,白银.正压法音速喷嘴气体流量标准装置的建立[J].计测技术,2008,28(B10):113-115. 被引量:7
  • 2LI C H, JONSON A. Bilateral comparison between NIM's and NIST's gas flow standards [ J ]. MAPAN Journal of Metrology Society of India, 2011,26(3 ) : 211-224.
  • 3LIM J M, YOON B H, OH Y K. The humidity effect on air flow rates in a critical flow venturi nozzle [ J ]. Flow Meas. Instrum. ,2011, 22 (5) :402-405.
  • 4MICKAN B, KRAMER R, DOPHEIDE D. Comparisons by PTB, NIST, and LNE-LADG in air and natural gas with critical venturi nozzles agree within 0. 05% [ C ]. Proc. of 6th Int. Symp. for Fluid Flow Meas, Queretaro, Mexico ,2006 : 16-18.
  • 5张永胜,刘彦军.自力式压力调节阀在正压法音速喷嘴标准装置中的应用[J].计测技术,2008,28(B10):110-112. 被引量:1
  • 6齐利晓,张涛,邢娟.正压法音速喷嘴气体流量标准装置的研究及应用[J].计量学报,2009,30(2):125-129. 被引量:4
  • 7JOHNSON A, WRIGHT J. Comparison between theoreti- cal CFV flow models and nist's primary flow data in the laminar, turbulent, and transition flow regimes [ J ]. Jour- nal of Fluids Engineering, Transactions of the ASME, 2008,130(7) : 1-11.
  • 81SO 9300. Measurement of gas flow by means of critical flow venturi nozzles[ S]. 2005.
  • 9GUEMANA M, AISSANI S, HAFAIFA A. Flow meas- urement and control in gas pipeline system using intelli- gent sonic nozzle sensor [J].Studies in Informatics and Control, 2011,20 ( 2 ) : 85-96.
  • 10魏凯丰,牛滨,张作群,宋少英.天然气测量系统中标方计算方法的研究[J].仪器仪表学报,2008,29(10):2207-2210. 被引量:4

二级参考文献48

共引文献25

同被引文献84

引证文献14

二级引证文献27

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部