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夾套幾何尺寸計算

來源: 時間:2012-12-25 14:55:20 瀏覽次數:

夾套和筒體的連接常焊接成封閉結構,夾套的結構尺寸常根據安裝和工藝兩方面的要求而定。夾套的安裝尺寸見圖4-6,夾套內徑D2可根據筒體內徑D1按表4-3選?。篋2 =D1+100=1500mm 夾套下封頭型式同筒體封頭,直徑D2與夾套筒體相同。
夾套和筒體的連接常焊接成封閉結構,夾套的結構尺寸常根據安裝和工藝兩方面的要求而定。夾套的安裝尺寸見圖4-6,夾套內徑D2可根據筒體內徑D1按表4-3選?。篋2  =D1+100=1500mm
夾套下封頭型式同筒體封頭,直徑D2與夾套筒體相同。
夾套高H2有傳熱面積而決定,不能低于料液高,
裝料系數  : y=操作容積/全容積=2÷2.5=0.8
夾套高H2  計算:H2   = (ηV-V封)÷Vim    代入數值計算
得:H2   =1.04 m
夾套所包圍的罐體的表面積,一定要大于工藝要求的傳熱面積F,即:
   F封+F筒>=F    其中 F筒=H2   ×F1m
   故  F封+F筒  =2.2346+4.40×1.04=7.07>=7㎡
所以換熱要求滿足。
筒體和上封頭的連接采用甲型平焊法蘭連接,選取凹凸密封面法蘭,其尺寸見附圖4-2,主要尺寸有附表4-4查的,其中:
D=1530mm     D1=1490mm   D2=1455mm  D3=1441mm
D4=1438mm    S=46mm   d=23mm  

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