隴南機械密封包括壓力控制、溫度控制、流體替換(堵塞)和雜質去除系統。在隴南機械密封系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)(tong)中，上述系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)(tong)并不同時包括在內。密(mi)(mi)(mi)封(feng)系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)(tong)的選擇主(zhu)(zhu)(zhu)(zhu)要取決于主(zhu)(zhu)(zhu)(zhu)密(mi)(mi)(mi)封(feng)件的應用范圍。例如(ru)，如(ru)果主(zhu)(zhu)(zhu)(zhu)密(mi)(mi)(mi)封(feng)用于高(gao)(gao)溫(wen)液體(ti)，密(mi)(mi)(mi)封(feng)系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)(tong)應確(que)保(bao)降低主(zhu)(zhu)(zhu)(zhu)密(mi)(mi)(mi)封(feng)的環境溫(wen)度(du)，即采用溫(wen)度(du)控(kong)制(zhi)系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)(tong)。如(ru)果主(zhu)(zhu)(zhu)(zhu)密(mi)(mi)(mi)封(feng)用于固(gu)體(ti)雜(za)質(zhi)含量高(gao)(gao)的工作介(jie)質(zhi)，密(mi)(mi)(mi)封(feng)系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)(tong)應確(que)保(bao)在主(zhu)(zhu)(zhu)(zhu)密(mi)(mi)(mi)封(feng)前降低固(gu)體(ti)雜(za)質(zhi)含量，即采用除(chu)(chu)雜(za)系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)(tong)。在腐蝕性介(jie)質(zhi)中，密(mi)(mi)(mi)封(feng)系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)(tong)必須確(que)保(bao)主(zhu)(zhu)(zhu)(zhu)密(mi)(mi)(mi)封(feng)降低腐蝕速率或(huo)消除(chu)(chu)腐蝕，即使用流體(ti)而(er)不是堵塞流體(ti)系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)(tong)；在高(gao)(gao)壓密(mi)(mi)(mi)封(feng)裝置中，輔助(zhu)系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)(tong)應確(que)保(bao)多級(ji)降壓和其他措(cuo)施，即壓力(li)控(kong)制(zhi)系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)(tong)。

　　隴南機械密封的(de)三個主(zhu)要(yao)功(gong)能(neng)如下：

　　1、沖洗功能，沖洗是隴南機械密封基本的功能，它直接將液體注入單面密封或雙面密封的高壓側。一般的隴南機械密封應該沖(chong)洗，特(te)別是對于輕(qing)烴泵，沖(chong)洗時(shi)達到隔離介(jie)(jie)(jie)質(zhi)、冷卻和改(gai)善潤(run)滑的(de)目的(de)。隔離介(jie)(jie)(jie)質(zhi)的(de)目的(de)可以通(tong)過將與介(jie)(jie)(jie)質(zhi)相容的(de)液體引入密封腔進行(xing)外部循環沖(chong)洗來實(shi)現。

　　2、除雜和過濾功能，密封流體中的微細固體粒子、污垢等雜質對隴南機械密封造(zao)成的(de)(de)危害(hai)非常(chang)嚴重(zhong)，可(ke)能導(dao)致密(mi)封端面(mian)的(de)(de)磨損，也可(ke)能堵塞寒冷(leng)密(mi)封系統(tong)的(de)(de)管(guan)線。密(mi)封性系統(tong)軟件(jian)具有(you)去(qu)除殘(can)(can)渣(zha)、保(bao)持液(ye)(ye)體清潔的(de)(de)作用(yong)。當殘(can)(can)渣(zha)的(de)(de)相對(dui)密(mi)度(du)小(xiao)于液(ye)(ye)體媒質相對(dui)密(mi)度(du)時，能用(yong)過(guo)濾裝置去(qu)除殘(can)(can)渣(zha)；而當殘(can)(can)渣(zha)的(de)(de)相對(dui)密(mi)度(du)超過(guo)液(ye)(ye)體媒質相對(dui)密(mi)度(du)時，可(ke)選用(yong)旋液(ye)(ye)分(fen)離設備或網(wang)式過(guo)濾器(qi)去(qu)除殘(can)(can)渣(zha)。

　　3、流體替代功能，含有固體顆粒的氣相介質和液相介質的直接密封難度很大，它們溫、毒、貴、易蒸發、易結晶。借助隴南機械密封可以用雙端隴南機械密封代(dai)替密(mi)封(feng)介(jie)質，將難以直接密(mi)封(feng)的介(jie)質轉化為密(mi)封(feng)潤滑性能好、清潔的密(mi)封(feng)液體介(jie)質。