论文部分内容阅读
加拿大阿尔伯达省加尔格里市诺瓦公司,在1978年完成了对13000公里运行管线中听属压缩机站运转可靠性的研究工作。发现压缩机系统停机时间占百分比最大的是与油系统有关。油系统出现问题最多的又是密封油系统。为此,诺瓦公司会同美国芝加哥约翰、柯伦(John、Crane)密封有限公司着手研究干式机械密封,并用于天然气长输管线离心压缩机上。诺瓦公司找到了一种维修量很小的密封,它不需用油密封、润滑和冷却。本文讨论这种密封的使用历史,经济效果,发展过程、研究程序等内容。
In 1978, Nova Company of Gargli, Alberta, Canada, completed a study on the reliability of the operation of a listening compressor station in a 13,000-km operating pipeline. The largest percentage of compressor system downtime was found to be related to the oil system. The most problematic oil system is the seal oil system. To this end, Nova Company and John, Crane (Chicago, USA) Seal Co., Ltd. to conduct research on dry mechanical seals, and used in natural gas long-distance pipeline centrifugal compressors. Novartis has found a seal with a small amount of maintenance, which does not require oil seals, lubrication and cooling. This article discusses the history of such seals, economic effects, development processes, research programs and more.