机械密封为什么会失效

• 作 者: 叶国祯
• 出 处: 化学工程与装备
• 发表日期: 1981年01期
• 关键词: 机械密封 密封面 料箱 动环 杂质 石墨 密封圈 机械密封结构 密封结构 构件

每年由于机械密封的失效使得设备的维修和生产成本增加了数以万元计.本文阐述造成密封失效的主要原因和避免密封失效的主要方法.造成机械密封失效的原因一般是由于:(1)装配差错,(2)机械密封的基本结构问题,(3)填料箱内液体含有杂质等.所有机械密封的基本结构都是相同的,都有动环和静环,每组构件都有一对由较软材料(例如石墨)制成的软面和由较硬材料(例如陶瓷)制成的硬面所组成的接触密封面.

Every year due to the failure of the mechanical seal makes the maintenance and production costs of the equipment increased tens of thousands of dollars.This article describes the main reasons for the seal failure and the main method to avoid the seal failure.Therefore, the causes of mechanical seal failure are generally as a result of: (1) Assembly errors, (2) basic structural problems of the mechanical seal, (3) liquid in the stuffing box containing impurities, etc. The basic structure of all mechanical seals is the same, with moving and stationary rings, each pair of components having a pair of A soft seal made of a softer material such as graphite and a hard seal made of a harder material such as ceramic.