化学工程2025，Vol.53Issue(5)：83-88,6.DOI:10.3969/j.issn.1005-9954.2025.05.015
离心压缩机组平衡压力及入口安全阀泄放量计算方法
Methods for calculating centrifugal compressor's settle-out pressure and inlet pressure safety valve relieving flow rate
孙彦泽1
作者信息
- 1. 北京石油化工工程有限公司,陕西 西安 710100
- 折叠
摘要
Abstract
The centrifugal compressor's settle-out pressure is currently not widely calculated in the domestic chemical engineering companies during the engineering design phase or technical revamping phase,if the mechanical design pressure of the inlet pipes is lower than the settle-out pressure,the compressor suction pipes may encounter rupture and other safety related issues.To get a quick calculation of the centrifugal compressor's settle-out pressure and suction pressure safety valve relieving flow rate during the engineering phase or technology revamping phase,two methods of calculation were provided based on the process gas with relative molecular mass changed or unchanged to calculate the centrifugal compressor's settle-out pressure conveniently with using the excel calculation tool.The results show that the settle-out pressures are the same with using the aforementioned two methods based on listing and summarizing the different pressure or temperature sections of the centrifugal compressor system.With the centrifugal compressor's settle-out pressure,the discharge pressure safety valve set pressure and the anti-surge valve flow coefficient,the inlet pressure safety valve relieving flow rate of the centrifugal compressor will be calculated accordingly.A more simplified calculating formula is given based on the isothermal compression process and the process gas relative molecular mass unchanged,which can be applied to the quick calculation of the centrifugal compressor's settle-out pressure and thus significantly reduce the amounts of parameters needed and time consumed in the engineering phase.Due to the lack of standardized calculation methods in domestic chemical engineering companies,the methods of calculating the centrifugal compressor's settle-out pressure can be regarded as engineering references which will make the process of compressor-related much safer than the uncalculated one.关键词
离心压缩机/平衡压力/安全阀/防喘振回流阀/流量系数Key words
centrifugal compressor/settle-out pressure/PSV/anti-surge valve/flow coefficient分类
化学化工引用本文复制引用
孙彦泽..离心压缩机组平衡压力及入口安全阀泄放量计算方法[J].化学工程,2025,53(5):83-88,6.
