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对环周进汽型的变截面通道内超声速汽液两相流升压装置进行了实验及理论研究,实验中进汽压力为0.15～0.4MPa,进水压力为0.2～0.6 MPa。实验结果表明在不同的汽水参数条件下,混合腔内压力与温度分布呈现出相似的规律。在同一工况下,激波前混合腔内各点的压力基本保持不变,随着凝结激波的产生,压力突然增大。激波过程中蒸汽几乎全部凝结,激波过后温度分布趋于平缓。并在实验结果的基础上分别建立了水喷嘴、蒸汽喷嘴、混合腔内两相区和扩散段的数学模型,其预测的装置出口压与实验值之间的误差小于15%。
Experimental and theoretical studies were carried out on the supersonic gas-liquid two-phase flow pressurizing device in a variable cross-section channel of the intake steam. In the experiment, the inlet steam pressure was 0.15-0.4 MPa and the inlet pressure was 0.2-0.6 MPa. The experimental results show that the pressure and temperature distribution in the mixing chamber show a similar pattern under different conditions of the soda water parameters. Under the same operating conditions, the pressure at each point in the mixing chamber before the shock wave basically remains unchanged. As the condensation shock wave is generated, the pressure suddenly increases. During the shock wave, almost all the steam condenses, and the temperature distribution tends to be gentle after the shock wave. Based on the experimental results, the mathematical models of water nozzle, steam nozzle, two-phase zone and diffusion zone in the mixing chamber are respectively established. The error between the predicted outlet pressure and the experimental value is less than 15%.