Horizontal cylindrical tank with optional 2:1 elliptical or hemispherical heads. Liquid / gas volume and weight vs. liquid level.
m
m
m
m
m
kg/m³
Inputs are in metres (m). 1 m = 1000 mm.
Total volume
–
m³
Liquid volume
–
m³
Gas volume
–
m³
Fill ratio
–
%
Liquid weight
–
kg
Spherical Tank
Spherical tank (球罐) liquid / gas volume vs. liquid level using the spherical-cap formula.
m
m³
m
kg/m³
Inputs are in metres (m). 1 m = 1000 mm.
Total volume
–
m³
Liquid volume
–
m³
Gas volume
–
m³
Fill ratio
–
%
Liquid weight
–
kg
Surface Area & Weight
Cylinder lateral area, head surface area, total surface area and steel weight of the shell+heads.
m
m
m
mm
mm
kg/m³
Surface area uses standard 2:1 ellipsoidal head approximation (1.084·D²) plus straight-flange bands; hemispherical head = π·D²/2.
Surface area
–
m²
Steel weight
–
kg
Shell mass
–
kg
Head mass (each)
–
kg
Vessel Mass & Saddle Reaction
Shell, head, liquid and accessory masses, total mass and saddle reaction for a horizontal vessel on two symmetric saddles.
m
m
m
mm
mm
kg/m³
kg/m³
0–1
kg
kg/m³
Computes shell/head/liquid masses, total mass and saddle reaction (two symmetric saddles). Detailed stress checks per GB/T 150 require the locked formula file.
Total volume
–
m³
Shell mass
–
kg
Head mass (each)
–
kg
Liquid mass (op.)
–
kg
Total mass (op.)
–
kg
Saddle reaction (each)
–
N
Wall Thickness & Weight
Internal-pressure wall thickness per GB/T 150 for cylindrical shell and 2:1 ellipsoidal / hemispherical heads, plus equipment weight, volume and surface area.
mm
mm
MPa
–
MPa
mm
mm
g/cm³
mm
Formulas follow GB/T 150. Side lifting-lug strength needs the locked formula file (export to .xlsx). Inputs are in millimetres (mm) and MPa.
Shell calculated thickness
–
mm
Head calculated thickness
–
mm
Shell design thickness
–
mm
Head design thickness
–
mm
Nominal thickness
–
mm
Effective thickness
–
mm
Shell mass
–
kg
Head mass (each)
–
kg
Total equipment mass
–
kg
Vessel inner volume
–
m³
Inner surface area
–
m²
Outer surface area
–
m²
Gas-Liquid Separator
Knock-out drum (分液罐) design.
m
m³
–
Nm³/h
kPa
K
kg/kmol
N·m/kg·K
mPa·s
m
kg/m³
–
m/s
Method per the referenced 分液罐 spreadsheet. Inputs in SI units.
Gas density ρv
–
kg/m³
Droplet settling velocity Uc
–
m/s
Liquid area ratio b
–
–
Liquid fill ratio a
–
–
Liquid height h
–
m
Separator diameter (calc) Dsk
–
m
Minimum diameter Dmin
–
m
Pipe Heat Loss & Temp Rise
Insulated pipe heat loss (or gain) and fluid temperature rise along the line.
°C
°C
m³/h
m
m
m
m
kg/m³
mPa·s
W/m·°C
kJ/kg·°C
W/m²·°C
Forced convection inside (Dittus-Boelter), conduction through insulation, convection to air. Inputs in SI.
Flow velocity u
–
m/s
Reynolds number Re
–
–
Prandtl number Pr
–
–
Internal convection a1
–
W/m²·°C
Insulation conductivity λ
–
W/m·°C
Overall heat-transfer coeff K
–
W/m²·°C
Heat flux Q
–
W/m
Total heat Q
–
kW
Temperature rise Δt
–
°C
Outlet temperature
–
°C
Level Alarm & Residence
Horizontal tank high/low level alarm setpoints and liquid residence time, from fill/discharge flows and alarm time.
m
m
m
m
m
–
m³/h
m³/h
min
m³
Low alarm: volume below = discharge flow × alarm time. High alarm: headspace above = fill flow × alarm time (capped at max-fill volume). Inverse level from volume uses the same volume model as the Horizontal Tank tab.
Total volume
–
m³
Liquid volume
–
m³
Gas volume
–
m³
Fill ratio
–
%
Max allowable vol
–
m³
Residence time
–
h
Low alarm level
–
m
High alarm level
–
m
Level @ target vol
–
m
Gas Purge / Displacement
Nitrogen/hydrogen purge of a vessel by repeated pressurise-and-vent cycles.
m³
–
–
bar
bar
–
Dilution per cycle = (Pbase+Ppurge)/Pbase.
Remaining impurity fraction
–
–
Remaining O2 content
–
–
Purge gas used / cycle
–
m³
Cumulative purge gas
–
m³
Cycle
Impurity frac.
O2 content
Cumulative purge (m³)
Vertical Atmospheric Tank
Shell plate thickness (fixed-point method, SH3046) and weight for a vertical cylindrical atmospheric tank.
m
m
kg/m3
MPa
-
kg/m3
-
Thickness per course.
Bottom course thickness
-
mm
Total shell weight
-
kg
Course
Liquid head Hi
t1 (liquid)
t2 (hydro test)
Design thickness
Course weight
Saddle Section Modulus
Combined bending section modulus of a saddle support web and stiffener ribs.
mm
mm
mm
mm
-
Base web plate; n vertical ribs stand on it.
Combined area As
-
mm2
Centroid Z0
-
mm
Moment of inertia Ix0
-
mm4
Section modulus Zr
-
mm3
Leg Support (Vertical Vessel)
Leg/skirt support of a vertical vessel: loads, stiffness, seismic, leg stress, base plate and anchor bolts.
Closed-form per the referenced 支腿 calculation sheet. Distinct from the saddle (horizontal vessel) module.
Results
Wind force P1
–
N
Single-leg Kgc
–
N/m
Leg stiffness Kg1
–
N/m
Shear Kg2
–
N/m
Horiz stiffness K
–
N/m
Natural period T1
–
s
Seismic coeff α1
–
–
Seismic force Fk1
–
N
Horiz force FH
–
N
Equiv mass meq
–
kg
Vert αvmax
–
–
Vert seismic Fv
–
N
Leg angle tgθ
–
–
Leg horiz Q
–
N
Moment vert FL1
–
N
Max compress FY
–
N
Max tension FL
–
N
Gyration i
–
mm
Slenderness λ
–
–
Critical λc
–
–
Coeff γ
–
–
Comp stress σc
–
MPa
Bend stress σb
–
MPa
Allow comp [σ]c
–
MPa
Combined check
–
–
Leg shear τ
–
MPa
Leg tension σ
–
MPa
Base pressure B
–
MPa
Base thickness δb
–
mm
Bolt area Ab
–
mm²
Bolt tension σB
–
MPa
Bolt shear τB
–
MPa
Shell weld area Aw1
–
mm²
Shell weld τ
–
MPa
Flash / Vapor-Liquid Separator
Separator sizing from flash vapor rate: diameter from allowable vapor rising velocity, liquid level and gas height.
kg/h
kg/m³
kJ/(℃·kg)
℃
℃
kJ/kg
℃
kg/m³
m³/h
m
min
Closed-form per the referenced 闪蒸罐 sheet. r and ρg of vapor are looked up from steam tables.