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Cryogenic butterfly Cryogenic butterfly valve
Cryogenic butterfly Cryogenic butterfly valve
Cryogenic butterfly Cryogenic butterfly valve
Cryogenic butterfly Cryogenic butterfly valve
Cryogenic butterfly Cryogenic butterfly valve
Cryogenic butterfly Cryogenic butterfly valve

Cryogenic butterfly Cryogenic butterfly valve

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Fujian Nuclear Five Valve CO.,LTD

Quanzhou,Fujian,China
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Butterfly valve, also called the flap valve is a kind of simple structure of the regulator, can be used for low pressure pipeline medium of switch control butterfly valve is closed (disc or disc) is a disc, shaft rotation around the valve to open and close a valve, the valve can be used to control air, water, steam, all kinds of corrosive medium, mud, oil, liquid metal and radioactive medium such as various types of fluid flow. Mainly in the line cut off and throttling effect. Butterfly valve opening and closing is a disc-shaped butterfly plate, the body rotation around its own axis, so as to achieve the aim of opening and closing or adjust.

 閥杆直徑:對多回轉類明杆閥門。便不能組裝成電動閥門。因此,如果電動蝶閥裝置允許通過的最大閥杆直徑不能通過所配閥門的閥杆。電動裝置空心輸出軸的內(nei) 徑必需大於(yu) 明杆閥門的閥杆外徑。對局部回轉閥門以及多回轉閥門中的暗杆閥門,雖不用考慮閥杆直徑的通過問題,但在選配時亦應充分考慮閥杆直徑與(yu) 鍵槽的尺寸,使組裝後能正常工作。

操作力矩:操作力矩是選擇閥門電動裝置的最主要參數。電動蝶閥運動過程可由行程、轉矩或軸向推力的大小來控製。由於(yu) 閥門電動裝置的工作特性和利用率取決(jue) 於(yu) 閥門的種類、裝置工作規範及閥門在管線或設備上的位置, 閥門電動蝶閥裝置是實現閥門程控、自控和遙控不可缺少的設備。因此,正確選擇閥門電動裝置,對防止出現超負荷現象(工作轉矩高於(yu) 控製轉矩)至關(guan) 重要。通常,正確選擇閥門電動蝶閥裝置的依據。

電動裝置輸出力矩應為(wei) 閥門操作最大力矩的1.2-1.5倍。

電動蝶閥操作推力:閥門電動裝置的主機結構有兩(liang) 種:一種是不配置推力盤。輸出力矩通過推力盤中的閥杆螺母轉換為(wei) 輸出推力。直接輸出力矩;另一種是配置推力盤。

輸出軸轉動圈數:閥門電動裝置輸出軸轉動圈數的多少與(yu) 閥門的公稱通徑、閥杆螺距、螺紋頭數有關(guan) 。H為(wei) 閥門開啟高度,要按M=HZS計算(M為(wei) 電動裝置應滿足的總轉動圈數。S為(wei) 閥杆傳(chuan) 動螺紋螺距,Z為(wei) 閥杆螺紋頭數。

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