乙烯工业 ›› 2025, Vol. 37 ›› Issue (3): 1-5.

• 压缩机 •    下一篇

离心式压缩机系统滞止压力计算探讨

王振维   

  1. 中国石化工程建设有限公司,北京 100101
  • 收稿日期:2025-02-06 修回日期:2025-04-10 出版日期:2025-09-25 发布日期:2025-09-28
  • 作者简介:王振维,男,1991年毕业于清华大学化学工程专业,获工学硕士学位,现从事石油化工工艺设计与研发,正高级工程师,已发表论文20篇。

Calculation of Stagnation Pressure of Centrifugal Compressor Systems 

Wang Zhenwei   

  1. SINOPEC Engineering Incorporation, Beijing, P.C.100101
  • Received:2025-02-06 Revised:2025-04-10 Online:2025-09-25 Published:2025-09-28

摘要:

离心式压缩机系统滞止压力对压缩机本体、附属系统(如密封)以及相关工艺系统(如吸入罐等)的设计均有影响。文中基于热力学理论推导了严格准确的计算公式,并衍生出不同的简化公式,通过计算对比分析了几种计算方法的误差,最后推荐了适用于工程设计阶段乙烯装置“三机”滞止压力最简单的计算方法。

关键词: 滞止压力  , 压缩机  , 压缩系统  , 裂解气压缩机  , 制冷压缩机

Abstract:

The stagnation pressure of a centrifugal compressor system impacts the design of the compressor body?, ?auxiliary systems? (e.g., seals) and ?related process systems? (e.g., suction drums). Rigorous and accurate calculation formulas are derived based on thermodynamic theory. Several simplified formulas are developed. The errors of several calculation methods are compared and analyzed through calculations, and a simplest calculation method is recommended for the stagnation pressure of three key compressors in ethylene plants.

Key words: stagnation pressure; compressor, compression system, cracking gas compressor, refrigeration compressor