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鍛鋼低溫閥門不可替代的特點

發布時間:2016-11-29  編輯:taike 查看:

低溫閥門
  One,forged steel low temperature valve containing spare parts material:
 
  Valve body,valve seat,gate,gasket,valve cover,valve cover bolt,stem,packing,cylinder pin,bolt,packing press cover,packing press plate,nut,stem nut,lubricating pad,lock nut,hand wheel.
 
  Two,the structural characteristics of forged steel low temperature valve:
 
  Bolt wound gasket and thread welded seal type,full diameter or diameter shrinkage,seal with stable pressure hole(for gate valve,ball valve),integral seat seal,rod bracket,anti-static,self centering sleeve type pressure plate is summarized as above.
 
  Three,six requirements for the design of low temperature valve:
 
  1,the valve should be in the low temperature medium and ambient temperature should have the ability to work for a long time.
 
  2,in order to be able to use at low temperature-196,the valve is generally designed to be extended valve cover.
 
  3,the work of the valve assembly can not be lubricated at low temperature,it is necessary to take structural measures to prevent the friction parts.
 
  4,the low temperature medium does not deal with the hand wheel operation and the packing seal performance has the harmful influence.
 
  5,direct contact with the low temperature medium valve assembly should have the structure of explosion proof and fire protection.
 
  6,the valve should not be a significant source of low temperature system,this is because the inflow of heat in addition to reducing the efficiency of low heat efficiency,such as excessive inflow,but also the internal fluid rapid evaporation,resulting in abnormal boost,resulting in danger.
 
  Conclude:
 
  Forged steel valve is very suitable for low temperature pipeline in thermal power plants of various systems,control of pipe breaking medium.Applicable medium:water,steam and other non corrosive medium.Forged steel valves and other valve products than is characterized by high temperature and high pressure,the unique self seal design,the higher the pressure,the more reliable seal.Due to technical performance the product characteristics,special conditions also formed the characteristics of other products can not be replaced.
 
  一,鍛鋼低溫閥包含備件材料:
 
  閥體,閥座,閘板,墊片,閥蓋,閥蓋螺栓,閥桿,填料,缸銷,螺栓,填料壓蓋,填料壓板,螺母,閥桿螺母,潤滑墊,鎖緊螺母,手輪。
 
  二,鍛鋼低溫閥的結構特點:
 
  螺栓墊圈和螺紋焊接密封類型,全直徑或直徑收縮,具有穩定壓力孔的密封(用于閘閥,球閥),整體座密封,桿支架,防靜電,自定心套筒式壓板。
 
  三,低溫閥設計要求:
 
  1,閥門應在低溫介質和環境溫度下應具有長時間工作的能力。
 
  2,為了能在低溫下使用-196,閥門一般設計成延伸閥蓋。
 
  3,閥組件的工作不能在低溫下潤滑,必須采取結構措施以防止摩擦部件。
 
  4,低溫介質不處理手輪操作,填料密封性能有不良影響。
 
  5,直接接觸低溫介質閥組件應具有防爆和防火結構。
 
  6,閥門不應該是低溫系統的重要來源,這是因為流入的熱量除了降低了低熱效率的效率,如過量流入,而且內部流體快速蒸發,導致異常升壓,導致危險。
 
  得出結論:
 
  鍛造鋼閥非常適合各種系統火力發電廠的低溫管道,管道破碎介質的控制。適用介質:水,蒸汽等非腐蝕性介質。鍛造鋼閥等閥門產品比以高溫高壓為特點,獨特的自密封設計,壓力越高,密封越可靠。由于技術性能的特點,產品特性,特殊條件也形成了其他產品的特點,不能替代。

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