掃一掃,加微信
聯系客服,馬上詢價
發(fa)布時間(jian):2021-06-01 15:02:51 人氣(qi):159733 來(lai)源:川工密封
張家港泵用張家港機械密封的O型圈為什么會泄漏失效?一般來說,原因可以從泵的張家港機械密封的(de)安裝、使用(yong)條件、運行速度和停機(ji)故障等方(fang)面進(jin)行監測原因。
一、安裝靜態試驗(yan)時的泄漏?
張家港泵用張家港機械密封安裝調試后,一(yi)般需要進(jin)行(xing)靜(jing)態試驗,觀(guan)察(cha)泄(xie)漏(lou)(lou)情況。如(ru)果(guo)(guo)泄(xie)漏(lou)(lou)量小(xiao),動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)(huan)或靜(jing)環(huan)(huan)(huan)密封圈有問題(ti);當泄(xie)漏(lou)(lou)量較大(da)時,表明(ming)動(dong)(dong)(dong)(dong)(dong)靜(jing)環(huan)(huan)(huan)摩(mo)擦副(fu)之間(jian)存在(zai)問題(ti)。在(zai)初步觀(guan)察(cha)泄(xie)漏(lou)(lou)量和判斷泄(xie)漏(lou)(lou)位置的基(ji)礎上,手動(dong)(dong)(dong)(dong)(dong)轉動(dong)(dong)(dong)(dong)(dong)O形圈進(jin)行(xing)觀(guan)察(cha)。如(ru)果(guo)(guo)泄(xie)漏(lou)(lou)量沒有明(ming)顯(xian)(xian)變化,說明(ming)動(dong)(dong)(dong)(dong)(dong)靜(jing)環(huan)(huan)(huan)密封有問題(ti);如(ru)果(guo)(guo)轉動(dong)(dong)(dong)(dong)(dong)時泄(xie)漏(lou)(lou)量有明(ming)顯(xian)(xian)變化,可以(yi)斷定(ding)動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)(huan)和靜(jing)環(huan)(huan)(huan)的摩(mo)擦副(fu)有問題(ti);如(ru)果(guo)(guo)是沿(yan)軸(zhou)向噴漏(lou)(lou)介質(zhi),動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)(huan)密封環(huan)(huan)(huan)(O型環(huan)(huan)(huan))存在(zai)很多問題(ti),如(ru)果(guo)(guo)是周(zhou)圍噴漏(lou)(lou)介質(zhi)或從水(shui)冷孔漏(lou)(lou)出,多半是靜(jing)環(huan)(huan)(huan)密封環(huan)(huan)(huan)失效。
二、試運的滲漏?
靜態試驗后,O型圈高速旋轉產生的離心力會抑制介質的泄漏。因此,試運行時張家港機械密封的泄漏,基本(ben)上是(shi)在軸與端蓋之間(jian)的密封失效(xiao)消除后(hou),動(dong)靜(jing)環之間(jian)的摩擦副損(sun)壞(huai)造成的。
三、停電還(huan)是停機(ji)?
離心泵正常運行過程中(zhong)O型圈(quan)突然(ran)泄漏,如果不及(ji)時發現,往往會導致重大(da)事故(gu)或損失(shi),應引起重視并采取(qu)有效措施。特(te)別是突然(ran)停電造(zao)成的事故(gu),必須(xu)準備好電源O型圈(quan)。
最后提醒大家,泵使用張家港機械密封時,一次(ci)泄漏和二次(ci)泄漏是有區別的。只要仔細觀(guan)察(cha),熟悉(xi)結構,就能(neng)做出正確(que)的判斷(duan)。