一、前言除一部分特殊形式以外,泵里都没有防止内部流体由轴贯通处泄漏到外面的密封装置。泵中相当复杂的部分就是这种密封装置,它是决定泵可靠性的关键。近年来由于泵的大容量化、高压高速化以及高性能和高可靠性的要求,更使得密封装置越来越重要。本文即以具体实例为主,说明密封部件的性能特点和密封系统。 I. INTRODUCTION Except for some special forms, there is no seal in the pump that prevents internal fluid from leaking to the outside through the shaft. The rather complicated part of the pump is the seal, which is the key to determining pump reliability. In recent years, due to the large capacity of the pump, high-pressure high-speed and high performance and high reliability requirements, making the sealing device more and more important. This article is based on specific examples, indicating the performance characteristics of sealing components and sealing system.