基于PIV测量的涡轮流量计响应分析  

Turbine flowmeter response analysis based on PIV measurement

作　　者：张桂夫[1] 王鲁海[1] 朱雨建[1] 李军[2] 杨基明[1] 

机构地区：[1]中国科学技术大学近代力学系,合肥230027 [2]大庆油田有限责任公司测试技术服务分公司,大庆163153

出　　处：《仪器仪表学报》2013年第10期2381-2387,共7页Chinese Journal of Scientific Instrument

摘　　要：应用粒子成像测速技术获得了涡轮流量计叶片入口流场的速度分布信息,并基于该测量结果,运用T-G模型理论得出流量计的响应。通过与以往所采用的几种典型的入口速度分布计算得到的结果比较分析表明,基于PIV测量的结果更接近于涡轮流量计的真实响应。还比较分析了涡轮入口速度分布对涡轮流量计响应的影响机理,相关结果可望为改进涡轮流量计响应的计算分析方法以及优化设计提供有价值的参考。Abstract ： Particle imaging velocimetry （PIV） technique is applied to measure the real inlet flow velocity distribution of a turbine flowmeter. This velocity distribution is then built into the Thompson-Grey turbine perform- ance model to examine the effect of inlet profile on turbine response. It is found that, comparing with the predictions based on the assumed fully developed annular inlet velocity distribution and uniform distribution, the results based on the actual PIV measurement agree better with the real response of the meter. The mechanism behind such an effect is further analyzed and discussed. The investigation also demonstrates that the proposed PIV technique has an attractive potential to provide rich information for the improvement of theoretical models and for the design of new- generation flowmeters.

关 键 词：流量测量 粒子成像测速技术 涡轮流量计 入口速度分布 

分 类 号：TH814[机械工程—仪器科学与技术]