石油化工设备技术 ›› 2025, Vol. 46 ›› Issue (3): 26-30.doi: 10.3969/j.issn.1006-8805.2025.03.005

• 密封技术 • 上一篇    

高压换热设备复合密封结构的特点与应用

张喆   

  1. 中国石油化工股份有限公司镇海炼化分公司,浙江 宁波 315207
  • 收稿日期:2025-04-09 接受日期:2025-04-28 出版日期:2025-05-15 发布日期:2025-05-20
  • 作者简介:张喆,男,2001年毕业于抚顺石油学院化工设备与机械专业,工学学士,主要从事炼油化工工艺与设备管理工作,获实用新型专利2项,高级工程师,已发表论文1篇。

Features and Applications of Composite Seal Structures in Highpressure Heat Exchanger

Zhang Zhe   

  1. SINOPEC Zhenhai Refining & Chemical Company, Ningbo, Zhejiang, 315207
  • Received:2025-04-09 Accepted:2025-04-28 Online:2025-05-15 Published:2025-05-20

摘要: 高压换热设备复合密封结构是一种新型密封结构,具有结构紧凑、密封可靠、经济性好、可长周期使用、检修便捷等特点。该结构由Ω密封环(简称Ω环)与C形密封环(简称C形环)组合而成,可起到双重密封作用。文章介绍了Ω环和C形环的结构与制造加工方法,同时,结合某沸腾床渣油装置高压换热设备的设计条件,运用ANSYS软件对复合密封结构进行了分析验证,并对复合密封结构相较于其他高压换热设备密封结构的优势进行了总结。分析结果显示,选择Ω环与C形环复合密封结构可保证换热设备使用时无泄漏、安全可靠,为解决大直径高压换热设备在制造和使用过程中与密封相关的技术难题提供了一种新的思路。

关键词: 高压换热设备, 复合密封, Ω密封环, C形密封环, 有限元分析

Abstract: The composite seal structure of highpressure heat exchanger is a new sealing technology. It has the features of compact structure, reliable sealing, low input cost, longterm use, convenient maintenance and so on. This structure is composed of Omegashaped seal ring (abbreviated as Ωshaped ring) and Cshaped seal ring (abbreviated as Cshaped ring), providing a dualsealing. This paper introduces the structures and manufacturing methods of Ωshaped ring and Cshaped ring. Combining with the design conditions of the highpressure heat exchanger of a fluidized bed residue unit, it also adopts ANSYS software to analyze and verify the composite seal structure and summarizes the advantages of composite seal structure compared with other seal structures of highpressure heat exchangers. The analysis results demonstrate that the composite seal structure combining Ωshaped ring and Cshaped ring can ensure leakfree and reliable operation of heat exchangers, offering a novel approach to address sealingrelated technical challenges in the manufacturing and application of largediameter highpressure heat exchangers.

Key words: highpressure heat exchanger, composite seal, Ω seal ring, Cshaped ring, finite element analysis