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選購實驗室反應(yīng)釜該如何選購密封件

點擊次數(shù):1730 更新時間:2014-06-23
    *,實驗室反應(yīng)釜屬于高溫高壓類實驗設(shè)備,同時需要很嚴格的密封系統(tǒng),如果密封不好,會出現(xiàn)漏氣漏液現(xiàn)象,這樣就嚴重的影響了,實驗的效果,另外,密封墊在遇到高溫高壓以及強酸強堿都可能會被腐蝕掉,也會造成一定的影響,因此選擇什么樣的密封件,對于實驗室反應(yīng)釜設(shè)備來說,是*的重要部分。但是,如何根據(jù)需求選擇合適的密封件呢?下面對于密封件的選擇,小編將進行詳細的總結(jié):
    1.首先要明確密封選擇的依據(jù):首先是實驗室反應(yīng)釜內(nèi)的工作壓力,然后是工作物料的性質(zhì),zui后就是設(shè)備的工作溫度。三個重要的反應(yīng)性質(zhì),對于密封件也有著不同的要求。
    2.其次要明確實驗室反應(yīng)釜所用密封的類別: 反應(yīng)釜所用密封即通常所說的軸封有兩類,*是填料密封,第二是機械密封,機械密封又分為單機封(即單端面機械密封)和雙機封(即雙端面機械密封),單機 封全套還包括水夾套,雙機封則較為復(fù)雜,除水夾套(必須有循環(huán)冷卻水)外,還包括配套的支架、平衡罐等。
    3.如何選擇合適的密封:在常溫常壓,物料沒有揮發(fā)性也不易燃易爆的使用條件下,要選擇填料密封;在壓力小于4公斤,物料的易揮發(fā)性和易燃易爆性一般的使用條件下,就要選擇單機封;在工作壓力超過4公斤(但 要小于10公斤),物料的易揮發(fā)性和易燃易爆性很強的使用條件下,則必須選擇雙機封。
    4.各種密封的優(yōu)缺點:填料密封價格*,但只適合zui普通的使用條件和物料;單機封價格適中,可以在大多數(shù)使用條件下通用;雙機封價格zui貴,但在苛刻的工作條件下必須使用。
    5.根據(jù)自己具體的使用條件才是zui重要的:如果在使用 填料密封或單機封就可以的情況下選擇雙機封,則會造成價格上不必要的浪費;如果在必須選擇雙機封的情況下選擇了填料密封或單機封,則會對以后的生產(chǎn)安全和 經(jīng)濟效益留下嚴重的隱患。因此根據(jù)使用條件選擇適合的密封形式特別重要,確定好合適的密封形式,既能保證滿足使用條件,又能避免不必要的浪費。
    實驗室反應(yīng)釜的密封件有著很大的學(xué)問,因此需要根據(jù)需求合理的選擇合適的部件,這樣對于實驗室反應(yīng)釜來說,解決這個問題,基本上漏氣問題也隨著解決了。所以在選購實驗室反應(yīng)釜時,要注意這點這是必要的。
 
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