凝汽器真空泄漏状况的评价方法探讨

Discussion on the Evaluation Method for Condenser Air-side Leakage in Power Plant

国内对真空系统的评价一般采用真空严密性试验,但实际上真空系统运行安全性与漏入真空系统的空气量及抽真空系统的能力直接相关。提出了一种测量方法,可以在现场实测的真空泄漏率与空气漏入量之间建立一种确定的关系,由此可对不同真空泄漏率下的机组运行安全性进行评估。

Normally the leak tightness test was used for evaluation of vacuum systems in power plant. But the operation safety of the unit is directly related to air leak-in rate of the condenser and capacity of the vacuum pump system. A testing method was introduced for establishing of function between the actual rate of condenser pressure change and air leak-in rate. Thus, the unit operation safety can be evaluated under the condition of different condenser pressure change.