涡街流量计测量饱和蒸汽质量流量和密度补偿法的探讨

The Investigation on the Mass Flow Measurement of Saturated Steam by Using Vortex Flowmeter and the Density Compensation

采用汽液两相流均相流动模型,分析了涡街流量计在饱和蒸汽质量流量测量中的适用性,结合低压湿蒸汽的物理性质,论述涡街流量计测量饱和蒸汽质量流量的误差与饱和蒸汽干度的关系,还介绍测量饱和蒸汽质量流量的变系数补偿法及其特点.

The adaptability of vortex flowmeters in mass flow measurement of saturated steam is analysed by using homogeneous flowing model for liquid/gas dual phase flow. Combining with the physical properties of low pressure wet steam, the relation between error caused by vortex flowmeter in mass flow measurement of saturated steam and the dryness of the saturated steam is derived.