立式上锅筒实际液位计算方法的探讨  

An Exploratory Investigation of the Method for Evaluating Actual Water Levels in Vertical Steam Drums

作　　者：邹向[1] 郑少健[1] 

机构地区：[1]中国科学院广州能源研究所

出　　处：《热能动力工程》1997年第5期345-357,共13页Journal of Engineering for Thermal Energy and Power

基　　金：1994年广东省自然科学基金资助项目

摘　　要：作者分析和讨论了汽水混合物由水下引进时的穿泡过程，比较了两种平均截面容积含汽率的计算方法，整理出容易计算的实际液位计算公式。实际液位与重量液位的差值取决于上锅筒蒸发量和工作压力。在中低压范围，蒸发量一定时，适当提高工作压力可以增加实际重力分离高度，从而提高自然分离效果。在某些情况下，最高液位与平均液位之差别是不容忽视的。An analysis and discussion is given of the bubbeing process in the case of underwater admission of steam water mixture. Two kinds of methods for evaluating average section volumetric quality are compared with a calculation formula given, which facilitates the computation of actual water levels.The difference between an actual water level and a weight water level is dependent on the steam drum steam output and operating pressure. In the case of a medium and low pressure range and a constant steam output a moderate increase in operating pressure can lead to an increase in actual gravity separation height, thereby enhancing the effectiveness of natural separation. Under certain circumstances the difference between the maximum water level and an average water level should not be taken lightly or disregarded.

关 键 词：立式 汽包 液位 容积含汽率 计算 锅炉 

分 类 号：TK223.13[动力工程及工程热物理—动力机械及工程]