摘要
航天液体动力系统液体燃料的供给与调节系统的密封工作条件非常恶劣,密封压差大、温度高、线速度大、工作时间长,对密封件技术带来很大挑战。本文介绍了国内外密封技术方面的一些新技术、新工艺、新概念等关键技术的应用,探讨了密封技术长寿命、高转速、高压力、高温环境和泄漏量小(甚至零泄漏)的发展趋势,分析了高温高压动密封的难点及关键技术。
It is a challenge for sealing technology for seals working under high temperatures, high pressures, great linear speed and long work duration. This paper introduces the applications of new technologies and new concepts used in the world. The development trend of seals of long life, high rotating speed, high temperature or high pressure, and little leakage is discussed. Based on comparing several seal configurations and analizing their advantages and disadvantages, solutions to the motive seal problems are put forward for liquid propellant engines under high temperatures and high pressures.
出处
《火箭推进》
CAS
2010年第4期31-35,共5页
Journal of Rocket Propulsion
关键词
液体推进系统
密封技术
发展趋势
liquid propellant engine
seals technology
directions
