發(fa)布時間:
2019
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03
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08
來(lai)源:
83
真(zhen)(zhen)(zhen)空(kong)(kong)(kong)系(xi)統(tong)用(yong)何種(zhong)(zhong)真(zhen)(zhen)(zhen)空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)(beng)(beng)(beng)，首先應(ying)根據(ju)系(xi)統(tong)的(de)(de)(de)(de)(de)要求,其次應(ying)對該泵(beng)(beng)(beng)(beng)(beng)(beng)(beng)性(xing)能特(te)點有(you)(you)詳(xiang)細了解,比(bi)(bi)較(jiao)了各(ge)種(zhong)(zhong)泵(beng)(beng)(beng)(beng)(beng)(beng)(beng)的(de)(de)(de)(de)(de)優缺點后,再決定(ding)(ding)之, 這樣才能選用(yong)得(de)(de)適當(dang)。為便于選擇所要使用(yong)的(de)(de)(de)(de)(de)真(zhen)(zhen)(zhen)空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)(beng)(beng)(beng),現將我國生(sheng)產(chan)(chan)的(de)(de)(de)(de)(de)各(ge)種(zhong)(zhong)類型(xing)(xing)真(zhen)(zhen)(zhen)空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)(beng)(beng)(beng)總的(de)(de)(de)(de)(de)情況歸納總結(jie)一(yi)(yi)下,簡(jian)略比(bi)(bi)較(jiao)它們的(de)(de)(de)(de)(de)特(te)性(xing)和優缺點,看來是必(bi)要的(de)(de)(de)(de)(de)。 一(yi)(yi)、油(you)(you)封機(ji)械泵(beng)(beng)(beng)(beng)(beng)(beng)(beng) 現生(sheng)產(chan)(chan)的(de)(de)(de)(de)(de)2X型(xing)(xing)旋片(pian)泵(beng)(beng)(beng)(beng)(beng)(beng)(beng)均為雙(shuang)級(ji)(ji),抽(chou)(chou)(chou)(chou)(chou)速(su)(su)(su)為0.5~150升/秒(miao)(miao),有(you)(you)全系(xi)列的(de)(de)(de)(de)(de)產(chan)(chan)品。 滑閥泵(beng)(beng)(beng)(beng)(beng)(beng)(beng)分單(dan)級(ji)(ji)(H型(xing)(xing))、雙(shuang)級(ji)(ji)(2H型(xing)(xing))。 抽(chou)(chou)(chou)(chou)(chou)速(su)(su)(su):H型(xing)(xing)為8 ~ 600升/秒(miao)(miao);2H型(xing)(xing)為8~ 70升/秒(miao)(miao)。亦有(you)(you)成系(xi)列生(sheng)產(chan)(chan)的(de)(de)(de)(de)(de)產(chan)(chan)品。 余擺線式泵(beng)(beng)(beng)(beng)(beng)(beng)(beng)抽(chou)(chou)(chou)(chou)(chou)速(su)(su)(su)可(ke)很大(da),體(ti)積小,目前(qian)正(zheng)在(zai)(zai)(zai)試生(sheng)產(chan)(chan)。 這類泵(beng)(beng)(beng)(beng)(beng)(beng)(beng)均用(yong)作獲得(de)(de)低(di)真(zhen)(zhen)(zhen)空(kong)(kong)(kong),或作高(gao)真(zhen)(zhen)(zhen)空(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)(beng)(beng)(beng)的(de)(de)(de)(de)(de)前(qian)級(ji)(ji)泵(beng)(beng)(beng)(beng)(beng)(beng)(beng)和預抽(chou)(chou)(chou)(chou)(chou)泵(beng)(beng)(beng)(beng)(beng)(beng)(beng)。帶(dai)有(you)(you)氣(qi)(qi)鎮(zhen)裝置的(de)(de)(de)(de)(de)可(ke)抽(chou)(chou)(chou)(chou)(chou)除(chu)潮濕空(kong)(kong)(kong)i。但極限(xian)(xian)真(zhen)(zhen)(zhen)空(kong)(kong)(kong)比(bi)(bi)抽(chou)(chou)(chou)(chou)(chou)干燥空(kong)(kong)(kong)氣(qi)(qi)(不用(yong)鎮(zhen)時(shi))低(di)-個數量級(ji)(ji)。泵(beng)(beng)(beng)(beng)(beng)(beng)(beng)的(de)(de)(de)(de)(de)抽(chou)(chou)(chou)(chou)(chou)速(su)(su)(su)系(xi)指進口(kou)壓(ya)(ya)(ya)(ya)強(qiang)(qiang)在(zai)(zai)(zai)760托(tuo)(tuo)(tuo)(tuo)時(shi)之抽(chou)(chou)(chou)(chou)(chou)速(su)(su)(su),當(dang)系(xi)統(tong)壓(ya)(ya)(ya)(ya)強(qiang)(qiang)下降(jiang)時(shi)抽(chou)(chou)(chou)(chou)(chou)速(su)(su)(su)亦下降(jiang),直至接(jie)近(jin)該泵(beng)(beng)(beng)(beng)(beng)(beng)(beng)的(de)(de)(de)(de)(de)極限(xian)(xian)真(zhen)(zhen)(zhen)空(kong)(kong)(kong),抽(chou)(chou)(chou)(chou)(chou)速(su)(su)(su)亦接(jie)近(jin)于零。其抽(chou)(chou)(chou)(chou)(chou)降(jiang)系(xi)數有(you)(you)一(yi)(yi)定(ding)(ding)規定(ding)(ding)。 二、機(ji)械增壓(ya)(ya)(ya)(ya)泵(beng)(beng)(beng)(beng)(beng)(beng)(beng)(羅茨泵(beng)(beng)(beng)(beng)(beng)(beng)(beng)) 工(gong)(gong)(gong)作壓(ya)(ya)(ya)(ya)強(qiang)(qiang)范(fan)(fan)(fan)圍(wei)10~5x10-4托(tuo)(tuo)(tuo)(tuo),常(chang)用(yong)范(fan)(fan)(fan)圍(wei)2~5x10-3托(tuo)(tuo)(tuo)(tuo),抽(chou)(chou)(chou)(chou)(chou)速(su)(su)(su)范(fan)(fan)(fan)圍(wei)150~ 2000升/秒(miao)(miao),我國已有(you)(you)成系(xi)列產(chan)(chan)品。這種(zhong)(zhong)泵(beng)(beng)(beng)(beng)(beng)(beng)(beng)最(zui)大(da)抽(chou)(chou)(chou)(chou)(chou)速(su)(su)(su)在(zai)(zai)(zai)2托(tuo)(tuo)(tuo)(tuo)~10-2托(tuo)(tuo)(tuo)(tuo)之間,需要前(qian)級(ji)(ji)泵(beng)(beng)(beng)(beng)(beng)(beng)(beng),不能直接(jie)向(xiang)大(da)氣(qi)(qi)排氣(qi)(qi)。極限(xian)(xian)真(zhen)(zhen)(zhen)空(kong)(kong)(kong)隨前(qian)級(ji)(ji)泵(beng)(beng)(beng)(beng)(beng)(beng)(beng)變化。與油(you)(you)增壓(ya)(ya)(ya)(ya)泵(beng)(beng)(beng)(beng)(beng)(beng)(beng)相比(bi)(bi),工(gong)(gong)(gong)作壓(ya)(ya)(ya)(ya)強(qiang)(qiang)范(fan)(fan)(fan)圍(wei)較(jiao)寬,最(zui)大(da)排氣(qi)(qi)壓(ya)(ya)(ya)(ya)強(qiang)(qiang)較(jiao)高(gao)(機(ji)械增壓(ya)(ya)(ya)(ya)泵(beng)(beng)(beng)(beng)(beng)(beng)(beng)10~30托(tuo)(tuo)(tuo)(tuo),油(you)(you)增壓(ya)(ya)(ya)(ya)泵(beng)(beng)(beng)(beng)(beng)(beng)(beng)1 ~ 2托(tuo)(tuo)(tuo)(tuo)) ,返流(liu)油(you)(you)蒸氣(qi)(qi)很少,用(yong)它抽(chou)(chou)(chou)(chou)(chou)除(chu)含有(you)(you)水蒸等可(ke)凝性(xing)氣(qi)(qi)體(ti)時(shi)較(jiao)合(he)適。 三、油(you)(you)增壓(ya)(ya)(ya)(ya)泵(beng)(beng)(beng)(beng)(beng)(beng)(beng) 工(gong)(gong)(gong)作壓(ya)(ya)(ya)(ya)強(qiang)(qiang)范(fan)(fan)(fan)圍(wei)1 ~1x10-4托(tuo)(tuo)(tuo)(tuo),常(chang)用(yong)范(fan)(fan)(fan)圍(wei)在(zai)(zai)(zai)0.1~ 1x10-2托(tuo)(tuo)(tuo)(tuo),抽(chou)(chou)(chou)(chou)(chou)速(su)(su)(su)范(fan)(fan)(fan)圍(wei)200~40000升/秒(miao)(miao),彌補了機(ji)械泵(beng)(beng)(beng)(beng)(beng)(beng)(beng)、擴散泵(beng)(beng)(beng)(beng)(beng)(beng)(beng)在(zai)(zai)(zai)此(ci)壓(ya)(ya)(ya)(ya)強(qiang)(qiang)范(fan)(fan)(fan)圍(wei)內抽(chou)(chou)(chou)(chou)(chou)速(su)(su)(su)小的(de)(de)(de)(de)(de)缺陷。對惰(duo)性(xing)氣(qi)(qi)體(ti)與其他氣(qi)(qi)體(ti)有(you)(you)相同(tong)的(de)(de)(de)(de)(de)抽(chou)(chou)(chou)(chou)(chou)速(su)(su)(su)。 四、油(you)(you)擴散泵(beng)(beng)(beng)(beng)(beng)(beng)(beng) 普通油(you)(you)擴散泵(beng)(beng)(beng)(beng)(beng)(beng)(beng)的(de)(de)(de)(de)(de)工(gong)(gong)(gong)作壓(ya)(ya)(ya)(ya)強(qiang)(qiang)范(fan)(fan)(fan)圍(wei)10-2~5x10-7托(tuo)(tuo)(tuo)(tuo),常(chang)用(yong)范(fan)(fan)(fan)圍(wei)10-8~ 5x10-...