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發布時(shi)間:2021-12-16 11:39:59 人氣(qi):96360 來(lai)源:
萬榮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。在萬榮機械密封系統(tong)(tong)(tong)中(zhong),上述系統(tong)(tong)(tong)并不(bu)同時包括在內(nei)。密(mi)(mi)封(feng)(feng)(feng)(feng)系統(tong)(tong)(tong)的(de)選擇主要取決于主密(mi)(mi)封(feng)(feng)(feng)(feng)件(jian)的(de)應用(yong)(yong)范圍。例如,如果主密(mi)(mi)封(feng)(feng)(feng)(feng)用(yong)(yong)于高(gao)溫(wen)液(ye)體(ti),密(mi)(mi)封(feng)(feng)(feng)(feng)系統(tong)(tong)(tong)應確(que)保(bao)降(jiang)(jiang)低主密(mi)(mi)封(feng)(feng)(feng)(feng)的(de)環境溫(wen)度(du),即采用(yong)(yong)溫(wen)度(du)控制系統(tong)(tong)(tong)。如果主密(mi)(mi)封(feng)(feng)(feng)(feng)用(yong)(yong)于固體(ti)雜(za)質(zhi)(zhi)含(han)量(liang)高(gao)的(de)工作介質(zhi)(zhi),密(mi)(mi)封(feng)(feng)(feng)(feng)系統(tong)(tong)(tong)應確(que)保(bao)在主密(mi)(mi)封(feng)(feng)(feng)(feng)前降(jiang)(jiang)低固體(ti)雜(za)質(zhi)(zhi)含(han)量(liang),即采用(yong)(yong)除(chu)(chu)雜(za)系統(tong)(tong)(tong)。在腐(fu)蝕性介質(zhi)(zhi)中(zhong),密(mi)(mi)封(feng)(feng)(feng)(feng)系統(tong)(tong)(tong)必須確(que)保(bao)主密(mi)(mi)封(feng)(feng)(feng)(feng)降(jiang)(jiang)低腐(fu)蝕速率或消除(chu)(chu)腐(fu)蝕,即使用(yong)(yong)流體(ti)而(er)不(bu)是堵(du)塞流體(ti)系統(tong)(tong)(tong);在高(gao)壓(ya)密(mi)(mi)封(feng)(feng)(feng)(feng)裝置中(zhong),輔助系統(tong)(tong)(tong)應確(que)保(bao)多級(ji)降(jiang)(jiang)壓(ya)和其他措施,即壓(ya)力控制系統(tong)(tong)(tong)。
萬榮機械密封的三個主(zhu)要功(gong)能(neng)如下(xia):
1、沖洗功能,沖洗是萬榮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。一般的萬榮機械密封應該沖洗(xi)(xi),特別(bie)是對于輕烴泵,沖洗(xi)(xi)時達到(dao)隔(ge)(ge)離介質、冷卻(que)和改(gai)善潤滑的(de)(de)(de)目的(de)(de)(de)。隔(ge)(ge)離介質的(de)(de)(de)目的(de)(de)(de)可以通過(guo)將與介質相容的(de)(de)(de)液體引入密封腔進行(xing)外部循環沖洗(xi)(xi)來實現。
2、除雜和過濾功能,密封流體中的微細固體粒子、污垢等雜質對萬榮機械密封造成的(de)危(wei)害非常(chang)嚴重,可(ke)能(neng)(neng)導(dao)致密(mi)(mi)封(feng)(feng)端面的(de)磨損,也可(ke)能(neng)(neng)堵塞(sai)寒冷密(mi)(mi)封(feng)(feng)系統(tong)的(de)管線(xian)。密(mi)(mi)封(feng)(feng)性系統(tong)軟件(jian)具有去除殘(can)(can)渣(zha)、保持液(ye)體清潔的(de)作(zuo)用(yong)。當(dang)殘(can)(can)渣(zha)的(de)相(xiang)對(dui)密(mi)(mi)度(du)(du)小于液(ye)體媒質相(xiang)對(dui)密(mi)(mi)度(du)(du)時,能(neng)(neng)用(yong)過濾裝(zhuang)置去除殘(can)(can)渣(zha);而當(dang)殘(can)(can)渣(zha)的(de)相(xiang)對(dui)密(mi)(mi)度(du)(du)超(chao)過液(ye)體媒質相(xiang)對(dui)密(mi)(mi)度(du)(du)時,可(ke)選用(yong)旋液(ye)分離設備或網式過濾器去除殘(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。借助萬榮機械密封可以用雙端萬榮機械密封代替密(mi)封(feng)介(jie)(jie)質,將(jiang)難以直接密(mi)封(feng)的介(jie)(jie)質轉化為密(mi)封(feng)潤(run)滑性能好、清潔(jie)的密(mi)封(feng)液體介(jie)(jie)質。