欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
为减少湿蒸汽损失，汽轮机低压缸设计中需要知道湿蒸汽的水滴参数。水滴参数与凝结过程紧密相连，但目前已有的凝结理论模型和实验室中的喷嘴实验结果不能直接应用于真实的汽轮机中。简单介绍了汽轮机低压缸内湿蒸汽的凝结机制和新研制的改进型湿蒸汽测量系统的工作原理。基于实测变背压过程中直接空冷机组低压汽轮机末级后的蒸汽湿度参数并结合凝结机制，分析变背压过程中蒸汽湿度参数的变化规律及原因，证实了汽轮机中存在异质凝结现象以及凝结从异质为主向均质为主转变的过程。
英文摘要：
Steam turbine low pressure （LP） cylinder design aims at reducing the wetness loss. It requires knowledge of steam droplet diameter distribution in the flow tunnel, which tightly relates to the condensation process. However, currently available models of condensation theory and the experiment results obtained from the steam nozzle can not be directly applied to assessment of the real steam turbine condensation. This paper briefly introduced the nucleation mechanism of wet steam in LP cylinders of steam turbines and the working principle of the newly developed wet steam measuring instrument. The correlation of steam wetness parameters with the back pressure was analyzed based on actual measurement of steam wetness parameters behind the last stage of the direct-cooling LP unit and the condensation mechanism. The existence of heterogeneous condensation and the transition of dominating condensation from heterogeneous to homogeneous over the back-pressure change were demonstrated by the actual measurement results.
同期刊论文项目
同项目期刊论文
期刊信息
位置：