本文从分相动量模型出发,提出了用均速管对汽液两相流体进行单参数测量的关系式,分析了动量交换因子J和滑移比s的影响,并进行了试验研究。结果表明:在干度x为0.85～1的范围内,用均速管进行汽液双相流体的单参数测量并用分相模型处理数据时,均方差为2.81%;用均相模型处理数据时,均方差为5.18%。 In this paper, based on the split-phase momentum model, the relationship between the single-parameter measurement of the vapor-liquid two-phase fluid and the influence of the momentum exchange factor J and the slip ratio s is analyzed and the experimental study is carried out. The results showed that the mean square error was 2.81% when the single-parameter measurement of gas-liquid two-phase fluid was performed with the average velocity of 0.85 ~ 1 and the data was processed by the phase-split model. When the data was processed by the homogeneous model , Mean square deviation of 5.18%.