Nozzle Design Under Internal Pressure
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Transcript of Nozzle Design Under Internal Pressure
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8/18/2019 Nozzle Design Under Internal Pressure
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VENDORDESIGNER
Rev.1
DESIGN DATA:P = Design pressure (barg) 82C 1 = Corrosion Allowance (mm) 3NP = Inlet Nozzle Size (in) 8Nozzle Material SA-333
Sn = Nozzle Allowable stress (N/mm2) 117.9
Nozzle Thickness (mm) 18.57Stiffener Material SA-516 Gr.70
Sr = Stiffener Allowable stress (N/mm2) 137.9
t r = Stiffener Thickness (mm) 12.5E r = Weld Joint efficiency of Stiffener 0.55C 2 = Guarantee Tolerance (mm) 2.28
De = External Diameter (mm) 219.1C = Factor UG-34(c)(3) 0.33E = Weld Joint efficiency 1.0Plug Sheet Material SA-516 Gr.70
Tensile Allowable Stress (N/mm 2) 137.9
Bending Allowable Stress(N/mm 2) 206.9 (1.5 * S tensile )T = Plug Sheet Thickness (mm) 20.0Holes O.D. (mm) 34.9Vertical Pitch (mm) 115.6E L = Ligament Efficiency 0.70a/3 = Opening Size (mm) 81.0
Size (in) 8.0 6 8 10 12L (mm) 230.0 L 230 230 375 405M (mm) 100.0 M 100 100 100 1602d (mm) 130.0 2d 130 130 275 255d (mm) 95.0 d 95 95 137.5 127.5D (mm) 135.0 D 111 135 155 163R (mm) 50.0 R 50 50 60 75Z (mm) 2.5 Z 2.5 2.5 2.5 2.5
Check the flat part of the Swaged Nozzle - ASME VIII DIV.1 - UG-34(c)(3)t = (d/3) * SQRT(Z * P * C / Sn *E) + C 1 + C 2 12.87 mm O.K.
Check the Stiffener of the Nozzletr = ((P * d) / (3 * S r * E r )) + 2 * C 1 9.42 mm O.K.
Check the Cylindrical part of the Nozzle - ASME VIII Div. 1 -App. 1t = (P *D e/2) / (S n *E + 0.4P) + C 1 + C 2 12.69 mm O.K.
Check the Header Nozzle Opening- ASME VIII Div. 1 -U-2(g)Bending Moment (Semiclamped Beam)M = (1/16) * P *(a/3) 2 3,363 N.mm
S b = 6 * M / ((T - C 1)2 * E L) 100.0 N.mm
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