【摘要】 精确测量气液流量已成为多相流量测量领域的一个难点。本文设计了一种新的动力驱动的旋流器设备，以自来水和空气为工质，对不同旋流器转速和气液流量下的节流压差、径向压差的变化特性与规律进行了研究。结果表明，随着两相流量的增大，节流压差单调增大，而径向压差在不同流型下呈现出三种不同的变化趋势，且在低气液流量下，提高旋流器转速拓宽了径向压差的稳定区间，从而获得更宽的测量范围。此外，本文引入滑移比和压差修正系数对分相流模型进行修正，建立了一种新的气液流量测量模型。在实验案例中，旋流器静态（转速为）时装置测量的液相和气相误差分别为±3.2%和±22%；而旋流器转速为600r·min^-1时装置测量的液相和气相误差分别为±2.5%和±9.6%。更多还原

【Abstract】 Accurate measurement of gas-liquid flow rates has become a challenge in the field of multiphase flow measurement. In this paper, a new dynamic-driven swirler device is designed to take tap water and air as the working fluid, and the variation characteristics and patterns of throttling differential pressure and radial differential pressure at different swirler speeds and gas-liquid flow rates are investigated. The results show that with the increase of two-phase flow rates, the throttling differential pressure monotonically increases, while the radial differential pressure shows three different trends under different flow patterns, and at low gas-liquid flow rates, increasing the swirler speed broadens the stabilization interval of the radial differential pressure, thus obtaining a wider measurement range. In addition, this paper introduces slip ratio and differential pressure correction coefficients to modify the separated flow model, and establishes a new model for gas-liquid flow measurement. In the experimental case, the measurement errors of the liquid and gas flow rates are±3.2% and ±22%, respectively, when the swirler is static（swirler speed is 0）, while the measurement errors are ±2.5% and ±9.6%, respectively, when the swirler speed is 600r·min^-1更多还原