酒泉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。在酒泉機械密封系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)中(zhong)，上述(shu)系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)并(bing)不同時包括在(zai)內(nei)。密(mi)(mi)(mi)封(feng)系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)的(de)選擇(ze)主(zhu)(zhu)要取決(jue)于主(zhu)(zhu)密(mi)(mi)(mi)封(feng)件的(de)應用(yong)(yong)(yong)范(fan)圍(wei)。例如，如果主(zhu)(zhu)密(mi)(mi)(mi)封(feng)用(yong)(yong)(yong)于高溫(wen)(wen)液體，密(mi)(mi)(mi)封(feng)系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)應確保(bao)降低(di)主(zhu)(zhu)密(mi)(mi)(mi)封(feng)的(de)環境溫(wen)(wen)度(du)，即采用(yong)(yong)(yong)溫(wen)(wen)度(du)控制系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)。如果主(zhu)(zhu)密(mi)(mi)(mi)封(feng)用(yong)(yong)(yong)于固體雜質(zhi)(zhi)含(han)(han)量(liang)高的(de)工作介質(zhi)(zhi)，密(mi)(mi)(mi)封(feng)系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)應確保(bao)在(zai)主(zhu)(zhu)密(mi)(mi)(mi)封(feng)前降低(di)固體雜質(zhi)(zhi)含(han)(han)量(liang)，即采用(yong)(yong)(yong)除雜系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)。在(zai)腐(fu)蝕性介質(zhi)(zhi)中(zhong)，密(mi)(mi)(mi)封(feng)系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)必須確保(bao)主(zhu)(zhu)密(mi)(mi)(mi)封(feng)降低(di)腐(fu)蝕速率或消(xiao)除腐(fu)蝕，即使用(yong)(yong)(yong)流體而不是堵塞流體系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)；在(zai)高壓密(mi)(mi)(mi)封(feng)裝置中(zhong)，輔助(zhu)系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)應確保(bao)多級(ji)降壓和其他措施，即壓力(li)控制系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)。

　　酒泉機械密封的三(san)個(ge)主要功(gong)能如(ru)下(xia)：

　　1、沖洗功能，沖洗是酒泉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。一般的酒泉機械密封應該沖洗(xi)，特別是對于(yu)輕烴泵，沖洗(xi)時達到隔離(li)介(jie)(jie)質(zhi)、冷(leng)卻和改善(shan)潤滑的(de)目(mu)的(de)。隔離(li)介(jie)(jie)質(zhi)的(de)目(mu)的(de)可以(yi)通過將與介(jie)(jie)質(zhi)相容的(de)液體引(yin)入(ru)密封腔進(jin)行外部循環沖洗(xi)來實現。

　　2、除雜和過濾功能，密封流體中的微細固體粒子、污垢等雜質對酒泉機械密封造(zao)成的危(wei)害(hai)非(fei)常嚴重(zhong)，可能導致密(mi)(mi)(mi)封(feng)端(duan)面(mian)的磨損，也可能堵(du)塞寒冷密(mi)(mi)(mi)封(feng)系(xi)統的管線。密(mi)(mi)(mi)封(feng)性(xing)系(xi)統軟(ruan)件具有去除殘渣(zha)(zha)、保持液(ye)體清(qing)潔的作用(yong)。當殘渣(zha)(zha)的相(xiang)對密(mi)(mi)(mi)度(du)(du)(du)小于液(ye)體媒質(zhi)相(xiang)對密(mi)(mi)(mi)度(du)(du)(du)時，能用(yong)過濾(lv)裝置去除殘渣(zha)(zha)；而當殘渣(zha)(zha)的相(xiang)對密(mi)(mi)(mi)度(du)(du)(du)超過液(ye)體媒質(zhi)相(xiang)對密(mi)(mi)(mi)度(du)(du)(du)時，可選用(yong)旋液(ye)分離設備(bei)或網式過濾(lv)器去除殘渣(zha)(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。借助酒泉機械密封可以用雙端酒泉機械密封代替密(mi)封(feng)(feng)介(jie)質(zhi)(zhi)，將(jiang)難以直接密(mi)封(feng)(feng)的介(jie)質(zhi)(zhi)轉化為密(mi)封(feng)(feng)潤滑(hua)性(xing)能好(hao)、清(qing)潔的密(mi)封(feng)(feng)液體介(jie)質(zhi)(zhi)。