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發布時(shi)間:2021-06-01 15:18:27 人(ren)氣:182753 來源:川工密封
麗江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。在麗江機械密封系(xi)(xi)(xi)統(tong)(tong)中,上述系(xi)(xi)(xi)統(tong)(tong)并不同(tong)時(shi)包括在(zai)(zai)(zai)內。密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)系(xi)(xi)(xi)統(tong)(tong)的選(xuan)擇主(zhu)(zhu)要取決于(yu)(yu)主(zhu)(zhu)密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)件的應(ying)用范圍。例如,如果主(zhu)(zhu)密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)用于(yu)(yu)高(gao)(gao)溫液(ye)體(ti)(ti),密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)系(xi)(xi)(xi)統(tong)(tong)應(ying)確(que)(que)保(bao)降(jiang)低(di)主(zhu)(zhu)密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)的環境溫度(du),即(ji)采(cai)用溫度(du)控制(zhi)系(xi)(xi)(xi)統(tong)(tong)。如果主(zhu)(zhu)密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)用于(yu)(yu)固(gu)(gu)體(ti)(ti)雜(za)(za)質含量高(gao)(gao)的工作介質,密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)系(xi)(xi)(xi)統(tong)(tong)應(ying)確(que)(que)保(bao)在(zai)(zai)(zai)主(zhu)(zhu)密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)前(qian)降(jiang)低(di)固(gu)(gu)體(ti)(ti)雜(za)(za)質含量,即(ji)采(cai)用除雜(za)(za)系(xi)(xi)(xi)統(tong)(tong)。在(zai)(zai)(zai)腐(fu)(fu)蝕(shi)性(xing)介質中,密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)系(xi)(xi)(xi)統(tong)(tong)必須確(que)(que)保(bao)主(zhu)(zhu)密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)降(jiang)低(di)腐(fu)(fu)蝕(shi)速率或消除腐(fu)(fu)蝕(shi),即(ji)使(shi)用流(liu)體(ti)(ti)而不是(shi)堵(du)塞流(liu)體(ti)(ti)系(xi)(xi)(xi)統(tong)(tong);在(zai)(zai)(zai)高(gao)(gao)壓(ya)(ya)密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)裝(zhuang)置中,輔助系(xi)(xi)(xi)統(tong)(tong)應(ying)確(que)(que)保(bao)多級降(jiang)壓(ya)(ya)和其他措施,即(ji)壓(ya)(ya)力(li)控制(zhi)系(xi)(xi)(xi)統(tong)(tong)。
麗江機械密封的三(san)個主要(yao)功能如(ru)下:
1、沖洗功能,沖洗是麗江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。一般的麗江機械密封應(ying)該沖(chong)洗(xi)(xi),特別是(shi)對于輕烴泵,沖(chong)洗(xi)(xi)時(shi)達到(dao)隔(ge)離介質、冷卻和改善(shan)潤滑(hua)的(de)(de)目(mu)的(de)(de)。隔(ge)離介質的(de)(de)目(mu)的(de)(de)可以通過將與(yu)介質相容的(de)(de)液體引入(ru)密封(feng)腔進(jin)行外部循(xun)環沖(chong)洗(xi)(xi)來實(shi)現。
2、除雜和過濾功能,密封流體中的微細固體粒子、污垢等雜質對麗江機械密封造成(cheng)的(de)(de)(de)(de)危害(hai)非常嚴重(zhong),可能導致密(mi)(mi)封(feng)(feng)端面(mian)的(de)(de)(de)(de)磨損(sun),也可能堵(du)塞寒(han)冷(leng)密(mi)(mi)封(feng)(feng)系統的(de)(de)(de)(de)管線(xian)。密(mi)(mi)封(feng)(feng)性系統軟件具有去(qu)除(chu)殘渣、保(bao)持(chi)液體(ti)清潔的(de)(de)(de)(de)作用。當殘渣的(de)(de)(de)(de)相對(dui)(dui)密(mi)(mi)度小于(yu)液體(ti)媒質相對(dui)(dui)密(mi)(mi)度時(shi)(shi),能用過(guo)濾(lv)裝(zhuang)置去(qu)除(chu)殘渣;而當殘渣的(de)(de)(de)(de)相對(dui)(dui)密(mi)(mi)度超過(guo)液體(ti)媒質相對(dui)(dui)密(mi)(mi)度時(shi)(shi),可選用旋液分離設備或(huo)網式過(guo)濾(lv)器去(qu)除(chu)殘渣。
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。借助麗江機械密封可以用雙端麗江機械密封代(dai)替密(mi)封(feng)介(jie)(jie)質,將難以直接密(mi)封(feng)的(de)(de)介(jie)(jie)質轉(zhuan)化(hua)為(wei)密(mi)封(feng)潤滑性(xing)能好、清潔的(de)(de)密(mi)封(feng)液體(ti)介(jie)(jie)質。