GIQ-A型系列氣動高真空蝶閥,真空蝶閥,氣動硬密封蝶閥,氣動真空蝶閥
GIQ-A型氣動真空蝶閥啟閉件是一個圓盤形的蝶板,在閥體內(nèi)繞其自身的軸線旋轉(zhuǎn),從而達(dá)到啟閉或調(diào)節(jié)的閥門叫蝶閥。氣動真空蝶閥全開到全關(guān)通常是小于900,高真空蝶閥和蝶桿本身沒有自鎖有力,為了蝶板的定位,要在閥桿上加裝蝸輪減速器。采用蝸輪減速器,不僅可以使蝶板具有自鎖能力,使蝶板停止在任意位置上,還能改善閥門的操作性能。工業(yè)專用真空蝶閥的特點能耐高溫,適用壓力范圍也較高,閥門公稱通徑大,閥體采用碳鋼制造,閥板的密封圈采用金屬環(huán)代替橡膠環(huán)。大型高溫蝶閥采用鋼板焊接制造,主要用于高溫介質(zhì)的煙風(fēng)道和煤氣管道。真空蝶閥、化工、建材、電站、玻璃等行業(yè)中的通風(fēng)、環(huán)保工程的含塵冷風(fēng)或熱風(fēng)氣體管道中,作為氣體介質(zhì)調(diào)節(jié)流量或切斷裝置。
GIQ-A型氣動真空蝶閥的優(yōu)點
GIQ-A型氣動真空蝶閥啟閉方便迅速、省力、流體阻力小,可以經(jīng)常操作。永嘉縣科本真空閥門廠生產(chǎn)的GIQ型氣動真空蝶閥結(jié)構(gòu)簡單,體積小,重量輕。可以運(yùn)送泥漿,在管道口積存液體最少。低壓下,可以實現(xiàn)良好的密封。調(diào)節(jié)性能好。
0 IntroductionIt is known that every solid material can dissolve andabsorb some gases in the atmosphere.When these materialsare put into a vacuum chamber(as an environment),they willgive off the adsorbed or dissolved gases and vapors,which iscalled outgassing[1].Outgassing in the ultra-high vacuumsystem includes outgassing of ultra-high vacuum valve facility andoutgassing of testing products,and the latter of which isanalyzed in this paper.Many testing products of spacecraft,such as drivingframework