论文部分内容阅读
提出了一种多喷嘴结构的汽-液两相喷射器,该装置由7个蒸汽喷嘴、吸入室、7个混合室和扩散室组成.通过实验研究了不同蒸汽干度下多喷嘴汽-液两相喷射器的工作特性.结果表明:由于汽羽的特性和蒸汽喷嘴与混合室的距离对喷射性能的共同影响,喷射器存在一个最佳蒸汽压力,且其数值随低温水温度的升高而减小;蒸汽干度未明显影响低温水质量流量的分布规律;喷射系数随蒸汽干度的增大而增大,随低温水温度的升高而减小.
A multi-nozzle structure of the vapor-liquid two-phase ejector, the device consists of seven steam nozzles, suction chamber, seven mixing chamber and diffusion chamber composition.Experimental study under different steam dryness multi-nozzle vapor - liquid The results show that due to the characteristics of steam plume and the distance between steam nozzle and mixing chamber, the ejector has an optimum steam pressure and its value increases with the temperature of low temperature water While the steam dryness did not significantly affect the distribution of low temperature water mass flow rate. The injection coefficient increased with the increase of steam dryness and decreased with the rise of low temperature water temperature.