多孔板流量测量的实验研究  

Experimental on Metering Characteristics of Multi-hole Orifice

作　　者：马太义[1] 王栋[1] 张炳东[1] 林宗虎[1] 

机构地区：[1]西安交通大学动力工程多相流国家重点实验室,西安710049

出　　处：《核动力工程》2010年第2期126-130,共5页Nuclear Power Engineering

基　　金：国家自然科学基金资助项目(50776071)

摘　　要：对一种新型的流量测量节流元件—多孔板的流出系数特性、压力损失和抗旋流性能进行了实验研究。与传统的标准孔板比较,多孔板的流出系数更加稳定,对上游旋流不敏感,压力损失比与标准孔板接近。对于当量孔径比(β)为0.42、0.59、0.65的3对孔板,在相同的雷诺数(Re)范围内,多孔板流出系数的变化范围比标准孔板分别低0.83%、2.02%、1.67%;在β较低时(β=0.42),多孔板的抗旋流能力优于标准孔板,而在β较大(β=0.65)时,刚好相反。Multi-hole orifice（MO） as a new type of throttling element is designed,and the characteristics of the discharge coefficient,the head loss and anti-swirl performance are experimentally studied.Compared with that of the standard orifice,the discharge coefficient of MO is more stable,and less sensitive to the upstream swirl,and the head loss is close to that of the standard orifice.For the three pairs plate of equivalent β of 0.42,0.59,and 0.65,the variation of the MO’s discharge coefficient is lower than that of the standard orifice by 0.83%,2.02% and 1.67%,respectively.The MO performance is superior to the standard orifice in anti-swirl aspect for lower β（β=0.42）,while the situation becomes opposite for larger β（β=0.65）.

关 键 词：多孔板 标准孔板 流量测量 

分 类 号：TH814[机械工程—仪器科学与技术]