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汶上機械密封的這三個功能一定要了解

發(fa)布時間:2021-12-16 11:39:59 人氣:96334 來源:

  汶上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。在汶上機械密封系(xi)(xi)(xi)(xi)統(tong)(tong)中(zhong),上(shang)述系(xi)(xi)(xi)(xi)統(tong)(tong)并不同(tong)時包(bao)括在(zai)內。密(mi)(mi)封(feng)(feng)(feng)(feng)系(xi)(xi)(xi)(xi)統(tong)(tong)的(de)選擇主要取決于(yu)主密(mi)(mi)封(feng)(feng)(feng)(feng)件的(de)應(ying)(ying)用(yong)(yong)范圍。例如(ru),如(ru)果(guo)主密(mi)(mi)封(feng)(feng)(feng)(feng)用(yong)(yong)于(yu)高(gao)溫(wen)(wen)液體(ti)(ti)(ti),密(mi)(mi)封(feng)(feng)(feng)(feng)系(xi)(xi)(xi)(xi)統(tong)(tong)應(ying)(ying)確(que)保(bao)降低主密(mi)(mi)封(feng)(feng)(feng)(feng)的(de)環境溫(wen)(wen)度,即采(cai)用(yong)(yong)溫(wen)(wen)度控(kong)制(zhi)系(xi)(xi)(xi)(xi)統(tong)(tong)。如(ru)果(guo)主密(mi)(mi)封(feng)(feng)(feng)(feng)用(yong)(yong)于(yu)固體(ti)(ti)(ti)雜(za)質含量高(gao)的(de)工(gong)作介(jie)質,密(mi)(mi)封(feng)(feng)(feng)(feng)系(xi)(xi)(xi)(xi)統(tong)(tong)應(ying)(ying)確(que)保(bao)在(zai)主密(mi)(mi)封(feng)(feng)(feng)(feng)前降低固體(ti)(ti)(ti)雜(za)質含量,即采(cai)用(yong)(yong)除雜(za)系(xi)(xi)(xi)(xi)統(tong)(tong)。在(zai)腐(fu)蝕(shi)性介(jie)質中(zhong),密(mi)(mi)封(feng)(feng)(feng)(feng)系(xi)(xi)(xi)(xi)統(tong)(tong)必須確(que)保(bao)主密(mi)(mi)封(feng)(feng)(feng)(feng)降低腐(fu)蝕(shi)速率或消(xiao)除腐(fu)蝕(shi),即使用(yong)(yong)流體(ti)(ti)(ti)而不是堵塞流體(ti)(ti)(ti)系(xi)(xi)(xi)(xi)統(tong)(tong);在(zai)高(gao)壓(ya)(ya)密(mi)(mi)封(feng)(feng)(feng)(feng)裝(zhuang)置中(zhong),輔(fu)助系(xi)(xi)(xi)(xi)統(tong)(tong)應(ying)(ying)確(que)保(bao)多級降壓(ya)(ya)和其他措施,即壓(ya)(ya)力控(kong)制(zhi)系(xi)(xi)(xi)(xi)統(tong)(tong)。


  汶上機械密封的三個主要功(gong)能(neng)如下:


  1、沖洗功能,沖洗是汶上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。一般的汶上機械密封應該沖洗(xi),特(te)別是(shi)對于輕烴泵,沖洗(xi)時達到隔離(li)(li)介質(zhi)、冷卻和(he)改善潤滑的(de)(de)目的(de)(de)。隔離(li)(li)介質(zhi)的(de)(de)目的(de)(de)可以通過將與介質(zhi)相容的(de)(de)液(ye)體引入密(mi)封腔進行外部(bu)循環沖洗(xi)來(lai)實現。

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  2、除雜和過濾功能,密封流體中的微細固體粒子、污垢等雜質對汶上機械密封造成的(de)危害(hai)非常嚴(yan)重,可能導致密(mi)(mi)封(feng)(feng)端面的(de)磨損(sun),也可能堵塞寒冷密(mi)(mi)封(feng)(feng)系(xi)統(tong)的(de)管線。密(mi)(mi)封(feng)(feng)性系(xi)統(tong)軟件(jian)具有(you)去除殘(can)(can)渣(zha)、保持(chi)液體(ti)清潔(jie)的(de)作用(yong)(yong)。當(dang)殘(can)(can)渣(zha)的(de)相對密(mi)(mi)度小于液體(ti)媒(mei)質(zhi)相對密(mi)(mi)度時(shi),能用(yong)(yong)過濾裝(zhuang)置(zhi)去除殘(can)(can)渣(zha);而當(dang)殘(can)(can)渣(zha)的(de)相對密(mi)(mi)度超過液體(ti)媒(mei)質(zhi)相對密(mi)(mi)度時(shi),可選用(yong)(yong)旋液分(fen)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。借助汶上機械密封可以用雙端汶上機械密封代替密(mi)(mi)封介(jie)質,將難以直(zhi)接密(mi)(mi)封的(de)介(jie)質轉化為密(mi)(mi)封潤滑性(xing)能好、清潔的(de)密(mi)(mi)封液體介(jie)質。