Page 57 - Pressure Vessel Design Manual

General Design 43

TYPE 4: REVERSE FLANGE DESIGN

Design pressure, P Allowabk Stresses
&sign temperature Flange Bolting
Flange material Design temp., &, Design temp., Sb
&Ring material Atm. temp.. E+. Am. temp., S.
conosion allowance

3 TABLES 2-3 AND 2-4 4 LOAD AND BOLT CALCULATIONS
N Wmz = brGy An, = greater of
b Hp a Pb*GmP WdS. or WmtISb
G H = G2rP14 Ab
Y Wmi = Hp + H w = WA, + &Pa
m

Ho = rB2PI4 ho = OS(C + 91 - 2%- B) MD = HDho
Ha = Wmi - H hG = 0.5(c - G) MQ = HGhG
&=H-HI, hT o.Yc - (B + GY2) MT = HThT
Add moments algebraically, then use the absolute value I Mol In all subsequent calculations. I Mol

K = Am' I I hlh, I I
I IV I I

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a=te+l X=y+6 Figure 2-14. Dimensional data and forces for a reverse
/3=4/3te+l m. = &.le' flange.
y = aflR Ilk = M;m'

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dapted from Taylor Forge International. Inc., by permission.