SPX FLOW S280 M-14, Руководство пользователя, Страница: 8 / 93

ENGINEER: Greg Eckard
DATE:
CALC NO.:
1000816-821 ASME REV NO.: 00
REINFORCEMENT REQUIRED FOR PORTED SLABS
A finite element analysis calculation (using ALGOR's Linear Stress Analysis package, version 9.20)
in accordance with U-2(g) has been performed to calculate the required port reinforcement thickness.
This analysis is summarized in APV Publication 3392. The following equation has been derived from
the results of this analysis.
TBPA = 6398.097 sq in AREA ENCLOSED BY ALL TIE BARS
ATMIN = 3812.589 sq in MAXIMUM AREA ENCLOSED BY SIDE TIE BARS
LOCATED INSIDE VERTICAL PORT CENTERS
VTC = 10.433 inches MAXIMUM VERTICAL SPAN OF SIDE TIE BARS
LOCATED INSIDE VERTICAL PORT CENTERS
TBMD = 31.646 inches MAXIMUM VERTICAL SPAN FROM TOP / BOTTOM END
TIE BARS TO TOP / BOTTOM SIDE TIE BAR LOCATED
INSIDE VERTICAL PORT CENTERS
A = 0.9348 CONSTANT VALUE FOR US UNITS
THICKNESS "T3" REQUIRED FOR PORT REINFORCEMENT
T3 = A*(P/Sop)^0.5*d^1.0066*[(TBPA/ATMIN)*(VTC/TBMD)]^0.0201
MINIMUM REQUIRED REINFORCED THICKNESS, INCLUDING CA T3 = 4.226 inches
MINIMUM THICKNESS "Tport" REQUIRED FOR PORTED SLABS
Tport = GREATER OF: T OR T3
Tport = 4.226 inches
LOADINGS
The slab thickness for this heat exchanger is based on the loadings is section UG-22(a), taking
into consideration both the internal and external (full vacuum) pressures. UG-21 states that the
pressure vessel shall be designed for at least the most severe condition of coincident pressure
and temperature expected in normal operation. The internal pressure is used in this calculation
since it creates the maximum differential pressure between the inside and outside of the vessel.
Loadings in sections UG-22 (b) through (i) have been considered with no additional thickness
required.
03-Feb-11
4 of 5
Kemper County MM218132 Approved