利國鎮需牢記填料改集式密封的這些安裝要領
常(chang)用的密(mi)封(feng)(feng)(feng)型式(shi)主要(yao)有填料密(mi)封(feng)(feng)(feng)、機械密(mi)封(feng)(feng)(feng)等,填料密(mi)封(feng)(feng)(feng)。填料改集(ji)式(shi)密(mi)封(feng)(feng)(feng)是一種(zhong)較為原始的接觸式(shi)密(mi)封(feng)(feng)(feng),具有結構簡單(dan)、成本低、更(geng)換(huan)簡便(bian)等優(you)點(dian),由于(yu)這些優(you)點(dian),因而在石油工業...