1.序言 瓦斯抽送所用透平离心式压缩机,其轴封装置是非常重要的,其形式有多种,但比较实用的主要有以下两种:①接触式,如机械密封;②非接触式,如油膜密封和阻塞迷宫密封。 这些密封形式各有其利弊,对高速运转高压瓦斯离心压缩机来说,用非接触式油膜密封多数场合都是适用的。但是,由于油膜密封用以封气的轴封油供油系统投资费很贵,故在使用条件许可的范围内采用阻塞密封来代替它,就有可能大量降低设备费用。从此角度出发,本文介绍了离心压缩机采用 1. Introduction The gas centrifugal pumping compressor used in the shaft seal device is very important, there are a variety of forms, but there are two more practical: ① contact, such as mechanical seals; ② non-contact , Such as oil film sealing and blocking labyrinth seal. These forms have their own advantages and disadvantages of the seal, high-speed operation of high-pressure gas centrifugal compressor, with non-contact oil film seal are applicable to most occasions. However, since the cost of the oil seal of the shaft seal oil supply system for sealing the oil film is expensive, it is possible to reduce the cost of the equipment greatly by replacing the oil seal with the seal seal within the range permitted by the use conditions. From this point of view, this article describes the use of centrifugal compressors