我厂常减压装置用离心式热油泵,输送介质温度370℃左右,在一次切换泵的启动中,机械密封突然失效,泄漏严重(通常称为“吡”了)。当停泵修理时,发现入口阀门封闭不严,密封泄漏不止,无法进行修理,有危及生产甚至造成火灾的可能。但是,我们采用“再启动油泵法”,顺利地制止了密封泄漏。所谓“再启动油泵法”,是指在下述条 I plant atmospheric vacuum pump with constant pressure relief device, the transmission medium temperature of about 370 ℃, in a switch pump start, the mechanical seal suddenly failure, serious leakage (often referred to as “Pyridine”). When stopping pump repair, found that the inlet valve closed lax seal leaks more than, can not be repaired, endangering the production and even the possibility of a fire. However, we adopted the “restart pump method”, successfully stopped the seal leak. The so-called “restart pump method” refers to the following article