A New Model for Wet Gas Flow Measurement with V-Cone Meter

The two-phase flow coefficient of a V-cone meter was proposed to correct the over-reading produced by measuring the wet gas using the V-cone meter.The experiment was conducted with the V-cone meter with a diameter ratio of 0.75 for air and water.The test pressure ranged from 0.10 MPa to 0.22 MPa,and the gas and liquid mass flow rates were from 100 m3·h-1 to 300 m3·h-1 and from 0 to 0.08 m3·h-1,respectively.The effects of the Lockhart-Martinelli parameter,the operating pressure and the gas densiometric Froude number on the two-phase flow coefficient were investigated.The results show that the two-phase flow coefficient increased linearly with the Lockhart-Martinelli parameter,and the slope of the two-phase flow coefficient vs.the Lockhart-Martinelli parameter was affected by the gas densiometric Froude number and the pressure.The correlation between the two-phase flow coefficient and the Lockhart-Martinelli parameter,the gas densiometric Froude number and the pressure was obtained.On the basis of the two-phase flow coefficient,the wet gas model was developed.The relative error of the gas mass flow rate predicted by the model is within ±5.0% at the 95% confidence level.