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釜體壁厚的確定

來源: 時間:2012-11-29 14:28:20 瀏覽次數:

釜體壁厚的確定可按“內壓薄壁圓筒與封頭的強度設計”和“外壓圓筒與封頭的設計”方法確定。具體方法是:當釜內為正壓操作,且釜內壓力大于夾套時,釜體壁厚應從按承受釜體內壓強度與承受夾套外壓穩定的計算所得兩個值中取其大者。
釜體壁厚的確定可按“內壓薄壁圓筒與封頭的強度設計”和“外壓圓筒與封頭的設計”方法確定。具體方法是:當釜內為正壓操作,且釜內壓力大于夾套時,釜體壁厚應從按承受釜體內壓強度與承受夾套外壓穩定的計算所得兩個值中取其大者。當釜內正壓操作,但其壓力小于夾套壓力時,釜體壁厚由穩定計算確定,不受外壓作用的封頭則由強度計算壁厚。當釜內為負壓操作時,應將夾套內內壓與釜內負壓之和作為釜體設計外壓,不受夾套壓力影響的上封頭,可按外壓確定壁厚。為焊接方便,常取上封頭與筒體等壁厚。
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