This is the One Foot Method for online calculation of tank wall thickness. According to API 650 fixed-point method, the tank wall thickness is calculated online when the ring plate height is constant
On line calculation program for calculating wall thickness of storage tank by fixed-point method.Unit conversion can be performed directly.According to the courseware of Shi University.
Applicable to horizontal vessel plane.Input operating temperature, ambient temperature, wind speed, insulation layer type, surface emissivity and insulation layer wall thickness to calculate wall temperature and heat loss with insulation layer, and wall temperature and heat loss without insulation layer
Enter the pressure, temperature, diameter, material and weld coefficient of the cylinder to calculate the wall thickness of the pressure vessel under Div 1 and Div 2.Calculations shall be carried out in accordance with ASME Sec VIII.
The wall thickness of storage tank is calculated online according to API 650, and the wall thickness of storage tank is calculated by the change point method. Different ring plate heights can be added, that is, [dynamically added ring plate height].This is the online calculation program Variable Design Point Method with different course height
When the ring plate height is different, the wall thickness of the storage tank shall be calculated according to the SHIDA courseware and the change point method.You can dynamically add multiple ring plate heights and output all the ring plate wall thicknesses.
Based on SHIDA PPT, assuming that the height of the ring plate is constant, the wall thickness of the storage tank is calculated using the change point method.This is the online calculation program of tank wall thickness.It is required to input: tank diameter, tank height, weld joint coefficient, calculation accuracy, and allowable stress for water test.Each ring plate has the same height.
The wall thickness of the storage tank is calculated according to API650, only considering the water test conditions, not considering the design conditions, and not considering the nominal wall thickness. The variable design point method is used to calculate the wall thickness of the storage tank.It is assumed that the height of the ring plate is constant.
Calculate according to the formula, where P is the design pressure (generally the maximum working pressure or the maximum allowable pressure specified on the nameplate of the pressure vessel for the pressure vessel in use), MPa;Is the allowable stress of the spherical shell material at the test temperature, MPa;T is the allowable stress of the spherical shell material at the design temperature, MPa;ηIs the test pressure
Reference standard: Spherical Tanks and Large Storage Tanks - Complete Book of Chemical Equipment Design (2005) P17 (8) is calculated according to the formula, where PT is the test pressure, MPa;Di is the inner diameter of the spherical shell, mm;δE is the effective thickness of the spherical shell, mm;σT is the stress of the spherical shell under the test pressure, MPa;
According to the formula G=CVρcalculation.Where, C is the volume fraction of liquid vapor (oil gas) in the liquid vapor mixture;V is the volume of discharged steam mixture, m3;ρIs the vapor density of the storage liquid (oil product), kg/m3;G is the evaporation loss of storage liquid (oil product), kg;
Reference standard: Spherical Tanks and Large Storage Tanks - Complete Book of Chemical Equipment Design (2005 edition) P145 (137) carbon equivalent converts various alloy elements in steel into carbon content.Carbon content is the main factor determining the strength and weldability of carbon steel.Alloy steel (mainly low-alloy steel) is decarburized to
Reference standard: Spherical Tanks and Large Storage Tanks - Complete Book of Chemical Equipment Design (2005 Edition) P160 (152) is calculated according to the formula Pi=KPmax-q1, where K is the overload coefficient, taking K=1.2;Pmax is the maximum positive pressure in the tank, kPa, and Pmax=2kPa for atmospheric storage tank;Q1 is the dead weight per unit area of the tank top (according to the projection plane
Reference standard: Spherical Tanks and Large Storage Tanks - Complete Book of Chemical Equipment Design (2005 Edition) P160 (152) is calculated according to the formula Po=q1+q2+q3, where q1 is the dead weight per unit area of the tank top (if there is an insulation layer, it should be included in the weight of the insulation layer, according to the projected area), kPa;Q2 is the design negative pressure in the tank, generally 0.49kPa
