Diseño de tanques de alta presion

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Pressure Vessel Engineering Ltd.
6 Hemispherical Head Design Tool ver E4.01 Page 1 of 1
7 Description
8 Dimensions:
9 133,386 Do [in] - outside diameter of head
10 0,472 tb [in] - thickness before forming
11 0,472 tf [in] - thickness after forming
12 0,000 Corr [in] - corrosion allowance
13 Material and Conditions:
14 SA - 612 Material
15 23.700 S [psi] - allowable stress
16 0,85 E - head longitudinal efficiency
17 250,0 P [psi] - interior pressure
18 Calculated Properties:
19 Approx. head weight based on steel, lbs = 3718,0
20 Approx. head volume, cuft = 351,97
21 Variables:
22 nt [in] = tf-Corr ~~ thickness with corrosion allowance removed 0,472-0 = 0,472
23 L [in] = (Do-2*nt)/2 ~~ inside radius with corrosion allowance remove(d133,386-2*0,472)/2 = 66,221
24 Ro [in]= Do/2 133,386/2 = 66,693
25 Required Thickness: UG-32(f)
26 Treq [in] =
0,411
Finite Element Analysis  ASME Code Calculations
Canadian Vessel Registration  Vessel Modeling and Drafting
Hemispherical Heads - Solución 2
(P*L)/(2*S*E-0.2*P)+Corr ~~ required minimum thickness
27 (250*66,221)/(2*23700*0,85-0.2*250)+0 =
28 CheckTreq = Treq<=tf 0,411<=0,472 = Acceptable
29 Maximum Pressure: UG-32(f)
30 Pmax [psi] =
(2*S*E*nt)/(L+0.2*nt) ~~ maximum allowed design pressure
31 (2*23700*0,85*0,472)/(66,221+0.2*0,472) =
286,8
32 CheckPMax = Pmax >= P 286,8 >= 250 = Acceptable
33 App. 1-4(f) calculation is not included on this sheet
34 Heads may be subject to stress relief if large elongation occurs - UCS-79(d), UNF-79(d), UHA-44(d)
35 Use the Weld Efficiency program to calculate E
36 The UG-16(b) minimum thickness requirement has not been taken into consideration here.
37 This sheet cannot be used to check for allowable exterior pressure loads.
38 This sheet is for educational use only - use at your own risk.
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Pressure Vessel Engineering Ltd.
120 Randall Drive, Suite B
Waterloo, Ontario, Canada, N2V 1C6
www.pveng.com (519) 880-9808