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不銹鋼換熱管更換維修時要用專業機器來操作
2020年8月1日 瀏覽:608次
       換熱管是換熱器中重要的換熱元件,缺少換熱管或是換熱管有缺損,都會對整個換熱工作的進行起到影響作用,所以,為了更好地使用換熱管,我們通常情況下都使用的是不銹鋼換熱管,因為不銹鋼換熱管與銅管相比,具有很好的耐腐蝕性。但是,盡管如此,不銹鋼換熱管在實際的使用過程中,還是會出現腐蝕和缺損,這個時候就需要對不銹鋼換熱管進行更換或維修了。那么,你可知道,不銹鋼換熱管的更換維修過程是怎樣的?下面,東燕節能就來跟大家介紹一下。
       脹管器是制造、維修各類容器時用來擴大管子的內、外徑,可以使管子與管板接觸部位緊密接合,不會漏水、漏氣并能承受一定的壓力的一種脹接工具,所以被廣泛適用于制冷、石化、電力、造船、冶金等行業的冷凝器、冷卻器、換熱器、鍋爐及其它壓力容器的制造與維修。
       脹管器主要由脹殼(保持器)、脹珠(滾珠)、脹桿(芯軸)三部件組成,其中脹珠與脹桿采用Gcr15軸承鋼,脹殼采用45#中碳鋼經熱處理工藝,可以提高硬度(HRC55°~60°)和韌度,脹殼上開內八字梯形斜槽,可防止脹珠脫落。
 
       工作時,將脹管器置入被脹管子內(脹殼進入約三分之二),然后推緊脹桿,順時針方向轉動脹桿(批量脹管應由脹管機作動力源,脹桿帶動脹珠,脹珠再帶動脹殼)。這時,脹殼斜槽與管子之間產生的旋轉角帶動脹桿在旋轉的同時沿著管子的軸線推進;隨著帶有錐度的脹桿逐漸推進,被脹子的內孔和外徑被逐漸擴大,使之與管板緊密結合,達到連接的目的,這樣不銹鋼換熱管也就更換維修好了。
       當然,我們也可以用液壓脹管機來對不銹鋼換熱管進行更換維修,因為這種機器是數字化自動控制,操作手柄僅重1.5kg,單人可連續快速脹接,勞動強度低,生產效率高,可以對內螺紋管或有縫焊接管進行脹接;而且脹接后的換熱管殘余應力低,有效防止間隙腐蝕,不易受應力腐蝕;對不銹鋼換熱管尺寸精度要求低,現場可適當調整脹桿直徑;脹接處沒有污染,先脹后焊不受影響。此外,還可以對不銹鋼波紋換熱管進行無損檢測,脹接壓力可精準設定,操作簡單,脹接質量可靠,不漏油。
       好了,以上就是不銹鋼換熱管的更換維修過程介紹,希望大家能夠了解。只是,脹管機生產廠家的小編還要提醒大家:盡量讓專業人士來做這一過程,以免影響更換維修效果。
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