电厂安全阀排汽管道热力计算及应用

华电技术 ›› 2011, Vol. 33 ›› Issue (11): 9-11.

电厂安全阀排汽管道热力计算及应用

张馨

广东省电力设计研究院，广东广州510663

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-11-25 发布日期:2011-11-25

Thermodynamic calculation of steam discharging pipe of safety valve in power plant and its application

ZHANG Xin

Guangdong Electric Power Design Institute, Guangzhou 510663, China

Received:1900-01-01 Revised:1900-01-01 Online:2011-11-25 Published:2011-11-25

摘要/Abstract

摘要： 介绍了排汽管道布置形式及排放过程，重点论述了开式、闭式排放系统的热力计算方法。在ASME B31.1计算方法的基础上，采用汽轮机管道设计技术规定的方法求解临界质量体积比，2种计算方法的结合使得计算精度高，可操作性强，在实际应用中效果明显。

关键词: 安全阀排汽管道, 排放系统, 热力计算, 应用范围, 防反喷

Abstract: The layout form of the steam discharging pipe and the discharge process were introduced. The thermodynamic calculation methods of opentype and closedtype discharge systems were expounded emphatically. Based on the calculation method recommended in ASME B31.1, the methods specified in code for piping design of steam turbine were adopted to solve the critical mass volume ratio. The combining of the two calculation methods can give high calculation accuracy, better operability and obvious effects in practical application.

Key words: safety valve discharging pipe, discharge system, thermodynamic calculation, prevention of reverse spray

张馨. 电厂安全阀排汽管道热力计算及应用[J]. 华电技术, 2011, 33(11): 9-11.

ZHANG Xin. Thermodynamic calculation of steam discharging pipe of safety valve in power plant and its application[J]. Huadian Technology, 2011, 33(11): 9-11.

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