鍛鋼球閥的安裝于維修說明-上海冠高閥門制造有限公司_168体育网页版

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168体育网页版

網站地圖 | XML地圖 | 英文版冠高閥門.中國 | Shanghai GuanGao Valve Manufacturing Co., Ltd.
2014/12/16-鍛鋼球閥的安裝于維修說明

鍛鋼球閥的安裝于維修說明:
  
  鍛鋼球閥基本誤差限;全行程偏差;回差;死區;洩漏量(在要求嚴格的場合時進行)。
  
  如果是對原系統中鍛鋼高壓球閥進行了大修,除了對下述各項進行校驗外,還應對舊閥的填料函和連接處等部位進行密封性檢查。尤其是新設計、安裝的管道系統,為了确保鍛鋼球閥在開車時能正常工作,并使系統安全運行,新閥在安裝之前,應首先檢查閥上的銘牌标記是否與設計要求相符。同時還應對以下項目進行調試。
  
  1、鍛鋼球閥前後管線準備好,前後管道應同軸,兩法蘭密封面應平行,管道應能承受球閥的重量,否則管道上必須配有适當的支撐。
  
  2、把閥前後管線吹掃幹淨,清除掉管道内的油污、焊渣和一切其它雜質。
  
  3、核對球閥的标志,查明球閥完好無損,将閥全開全閉數次證實其工作正常。
  
  4、拆去球閥兩端連接法蘭上的保護件。
  
  5、檢查閥孔清除可能有的污物,然後清洗閥孔。閥座與球之間即使僅有微小顆粒的異物也可能會損傷閥座密封面。
  
  6、把閥裝上管線,閥的任何一端都可裝在上遊端,用手柄驅動的閥可安裝在管道上的任意位置,但帶有齒輪箱或氣動驅動器的球閥應直立安裝,即安裝在水平管道上,且驅動裝置處于管道上方。
  
  7、閥法蘭與管線法蘭間按管路設計要求裝上密封墊。
  
  8、法蘭上的螺栓需對稱、逐次、均勻擰緊。
  
  9、連接氣動管線,采用氣動驅動器時。
  
  10、操作驅動器啟、閉球閥數次,應靈活無滞澀,證實其工作正常。
  
  11、按管路設計要求對管道與球閥間的法蘭結合面進行密封性能檢查。
  
  鍛鋼球閥在現場使用中,很多往往不是因為鍛鋼球閥本身質量所引起,而是對鍛鋼球閥的安裝使用不當所造成,如安裝環境、安裝位置及方向不當或者是管路不清潔等原因所緻。因此鍛鋼球閥在安裝使用時要注意以下幾方面:
  
  (1)鍛鋼球閥屬于現場儀表,要求環境溫度應在标準額定範圍,相對濕度≤95%。如果是安裝在露天或高溫場合,應采取防水、降溫措施。在有震源的地方要遠離振源或增加防振措施。
  
  (2)鍛鋼球閥一般應卧式安裝,特殊情況下可以傾斜,如傾斜角度很大或者閥本身自重太大時對閥應增加支承件保護。
  
  (3)安裝鍛鋼高壓球閥的管道一般不要離地面或地闆太高,在管道高度大于2m時應盡量設置平台,以利于操作手輪和便于進行維修。
  
  (4)鍛鋼球閥安裝前應對管路進行清洗,排除污物和焊渣。安裝後,為保證不使雜質殘留在閥體内,還應再次對閥門進行清洗,即通入介質時應使所有閥門開啟,以免雜質卡住。在使用手輪機構後,應恢複到原來的空檔位置。
  
  (5)為了使鍛鋼球閥在發生故障或維修的情況下使生産過程能繼續進行,鍛鋼球閥應加旁通管路。同時還應特别注意,調節閥的安裝位置是否符合工藝過程的要求。
  
  (6)執行機構的減速器拆修後應注意加油潤滑,低速一般不要拆洗加油。裝配後還應檢查閥位與閥位開度指示是否相符。
  
  鍛鋼球閥維修溫馨的提示:球閥在關閉狀态下,閥體内部依舊存在受壓流體
  
  維修前,解除管線壓力并使閥門處于打開位置
  
  維修前,斷開電源或氣源
  
  維修前,将執行機構與支架脫離件鎖起來,按閥門流向裝上管道,就可以正常使用。

 


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