标准椭圆封头尺寸.doc

标准椭圆封头尺寸标准椭圆封头尺寸公称直径 DN mm曲面高度 h1 mm直边高度 h2 mm内表面积 A m2容积 V m330075250.1210.00530(350)88250.1600.00802250.2040.0115 400100 400.2230.0134250.2540.0158 (450)112 400.2750.0183250.3090.0213400.3330.0242500125500.3490.0262250.3700.0277400.3960.0313(550)137500.4130.0336250.4360.0352400.4640.0396600150500.4830.0425250.5070.0442400.5380.0493(650)162500.5580.0526250.5840.0545400.6170.0603700175500.6390.0642250.7540.0796400.7920.0871800200500.8170.0921250.9450.112400.8800.121900225501.020.127251.160.151401.210.1621000250501.240.170251.400.198401.450.212(1100)275501.490.222251.650.255401.170.2721200300501.750.283 25251.931.930.3210.321(1300)325325401.990.341502.030.354252.230.398402.290.4211400350502.330.436252.550.487402.620.513(1500)375502.670.530252.890.587 40402.972.970.6170.6171600400503.020.637253.250.700403.340.734(1700)425503.390.757253.640.826403.730.8661800450503.780.889254.050.971 (1900)475 404.141.01254.481.13404.571.182000500504.631.201.2Di+2Hz+20 其中 Di--封头公称直径 Hz--封头直边高度 20--为加工坡口余量标准椭圆封头： a=b=1/2D（a、b 轴相等并等于椭圆公称直径） c=1/4D（c 椭圆的短轴，等于公称直径的 1/4） 代入上式：V=3/4*（1/2D）^2*(1/4D) =0.1308*D^3V=∏4/3*A*B*C*1/2。