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almacenamiento de GLP ( Gas natural licuado)
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CISTERNAS PROPANO
Relating Natural Gas & Propane Storage
11 gallons propane equals 1 MMbtu
To allow for expansion of the liquid propane, tanks are never filled to 100%. At 60° F, the maximum filling density is about 85%. The chart and graph below show common tank sizes and net fuel storage capacities in gallons and "millions of btus" (MMbtu).
3,900 84"16' - 2 3/4"
4' - 4 1/4'' 5,893
6,565 84"25' - 10 1/
8' - 0'' 9,723
12,000 84"44' - 10 1/2
27'- 0'' 17,301
18,000 109,346" 40' - 11 3/8 21'- 0'' 26,107
30,000 109,346" 65'- 11 3/8' 46'- 0'' 43,539
30,000 131,875"46'- 9 7/8''
10'- 11'' 43,144
45,000 131,875" 68'- 6 3/8'' 46' - 7'' 64,99460,000 131,875" 90'- 0'' 86,66290,000 131,875" 133' - 2 1/4 111'- 0'' 130,213
Tank Trim
Most LPG storage tanks in standby-plant service are steel, non-refrigerated pressure vessels. Tanks are available in many sizes for both aboveground and underground service. New propane tanks are built to ASME standards and are designed for at least 250 psig working pressure. Common tank sizes and approximate dimensions are shown in the chart below. Larger industrial and commercial applications generally use 18,000 gallon and larger tanks.
Capacity in US
Water Gals
Outside Diameter
Overall Height
Engineered Pier Spacing
End Tank To
Centerline of Pier
Estimated Weight
Lbs
5' - 11 1/4''
8' - 11 1/4''
8' - 11 1/4''
9'- 11 11/16''
9'- 11 11/16''
24'- 11 7/8''
10' - 11 11/16''68' - 2
1/8''10' - 10 15/16''11'- 1 1/8''
Required tank trim includes relief valves, excess flow valves and gauges for temperature, pressure and liquid level. Remote / automatic valve features are often required or desired to provide enhanced product control and safety
CISTERNAS LPG
D. LPG Transport Tank
LPG Storage Tank & LPG Transport Tank Specifications
• Plate thickness is in standard design of ASME• Plat Shell & Hemispherical using ASTM A 516 GRADE 70• Support Tank using ASTM A-36 or JIS G 3101 / SS-400
BULK PLANT LPG STORAGE TANK
D (mm) L1 (mm) L2 (mm) L3 (mm) V (mm) H (mm)
*22 5050 2440 5410 4040 2300 2200 2900 10
*35 6740 2440 8210 6860 4000 2200 2900 10
35 7200 2440 8500 6060 4000 2200 2900 10
45 9210 2440 10520 8080 5600 2200 2900 12
50 10735 2440 11540 9100 5600 2200 2900 13
*50 10275 3150 7340 5600 3400 2900 3670 13
*70 13130 3150 10150 8400 5600 2900 3670 13
*115 20030 3150 15750 14000 7800 2900 3670 13
Designed and constructed according to AD-Merkblatter for working pressure 17,5 Kg/cm2. Hydrostatically tested at 26,25 Kg/cm2, T junction and longitudinal welds 100% X-rayed. Circumferential welds 25% X-rayed. Shot blasted and painted finish, inspection and nozzles as per owner requirement.
Volume (M3)
Weight (KG)
Thickness (mm)
180 24400 3500 20000 16500 11500 3000 4020 14
DOMESTIC TANK
D (mm) L1 (mm) L2 (mm) L3 (mm) V (mm) H (mm)
1750 375 1000 2470 1880 1360 630 1390 4.8
3000 650 1200 2900 2109 1400 675 1620 5.7
5000 1030 1200 4740 4040 3200 675 1620 5.7
10000 1900 1650 5090 4180 3300 900 2050 7
Cylindrical body fitted with two elliptic domed ends, with joggle and hot pressed within the normalizing range, made from fine grain normalised steel plates, assembled by submerged arc welding process. Tanks mounted on welded legs and provided with lifting lugs, earthling bolt, data plate and protection cover with locking facility. T-junction and longitudinal welds 100% X-rayed, circumferential welds 25% X-rayed. Designed and constructed for working pressure 17,5 Kg/cm2, sand blasted, metal coated and painted. Finish, inspection and fittings as per schedule.
Volume (M3)
Weight (KG)
Thickness (mm)
Wall thickness calculation of Cylinder
according ASME
Type of shell Cylinder
Design pressure P 0.5
Design temperature T 220 ⁰CMaterial description A-106 Gr. B
Yield stress, design temperature S 175.2
Specific gravity ρ 7850
Outside diameter 219.1 mm
Length tangent to tangen L 2256 mmNominal wall thickness t 8.2 mmCorrosion allowance Ca 1 mmTolerance tol 1.03 mmJoint efficiency E 1Semi angle at apex cone α 0 degree (For cone only)Design Code ASME (Section VIII , Div. 1)
Allowable stress S = 175.2
Corroded thickness 6.17 mm
N/mm2
N/mm2
kg/m3
Do
N/mm2
tc = t - Ca - tol
Corroded inside radius 103.38 mm
Required wall thickness 0.30 mm
2.33 mm
10.09
t is OK
Weight 96.22 kg
Enclosed volume
Wall thickness calculation of Cone
according ASME
Type of shell Cone
Design pressure P 0.5
Design temperature T 220 ⁰CMaterial description A - 106 Gr. B
Yield stress, design temperature S 175.2
Specific gravity ρ 7850
Outside diameter 219.1 mm
Length tangent to tangen L 2256 mmNominal wall thickness t 8.2 mmCorrosion allowance Ca 1 mmTolerance tol 1.03 mmJoint efficiency E 1Semi angle at apex cone α 0 degree 0.00 rad.Design Code ASME (Section VIII , Div. 1) (For cone only)
Allowable stress S = 175.2
Corroded thickness 6.17 mm
206.76 mm
Required wall thickness 0.30 mm
R = Do/2 - tc
tr = (P*R) / ( S*E - (0.6*P))
Nominal required thickness
trn = tr + Ca + tol
Max. Allowable Working Press. MAWP = S*E*tc / (R + (0.6*tc)) N/mm2
Thickness analysis, t > trn ?
N/mm2
N/mm2
kg/m3
Do
N/mm2
tc = t - Ca - tol
Corroded inside Diameter
D = Do - 2*(tc / cos α)
tr = P*D / (2*cosα*(S*E - 0,6*P))
Required wall thickness 0.30 mm
2.33 mm
10.09
t is OK
Weight
Enclosed volume
Wall thickness calculation of Sphere
according ASME
Type of shell SphereDesign pressure P 0.5Design temperature T 220 ⁰CMaterial description A - 106 Gr. B
Yield stress, design temperature S 175.2
Specific gravity ρ 7850
Outside diameter 219.1 mmL 2256 mm
Nominal wall thickness t 8.2 mmCorrosion allowance Ca 1 mmTolerance tol 1.03 mmJoint efficiency E 1
α 0 degreeDesign Code ASME (Section VIII , Div. 1)
Allowable stress S = 175.2
Corroded thickness 6.17 mm
Corroded inside radius 103.38 mm
Required wall thickness 0.15 mm
2.18 mm
20.67
tr = P*D / (2*cosα*(S*E - 0,6*P))
Nominal required thickness
trn = tr + Ca + tol
Max. Allowable Working Press. MAWP = 2*S*E*tc*cosα / (D + (1,2*tc*cosα)) N/mm2
Thickness analysis, t > trn ?
N/mm2
N/mm2
kg/m3
Do
Length tangent to tangent
Semi angle at apex cone
N/mm2
tc = t - Ca - tol
R = Do /2 - tc
tr = P * R / (2*S*E - 0,2*P)
Nominal required thickness
trn = tr + Ca + tol
Max. Allowable Working Press. MAWP = 2*S*E*tc / (R + (0,2*tc)) N/mm2
20.67
t is OK
Weight
Enclosed volume
Wall thickness calculation of heads
according ASME
Type of shell Ellipsoidal
Design pressure P 0.5
Design temperature T 220 ⁰CMaterial description A - 106 Gr. B
Yield stress, design temperature S 175.2
Specific gravity ρ 7850
Outside diameter 219.1 mm
Nominal wall thickness t 8.2 mmSee below mm Only for torisph.
See below mm Only for torisph.
Corrosion allowance Ca 1 mmTolerance tol 0 mmJoint efficiency E 1
Max. Allowable Working Press. MAWP = 2*S*E*tc / (R + (0,2*tc)) N/mm2
Thickness analysis, t > trn ?
N/mm2
N/mm2
kg/m3
Do
Inside radius knuckle nom.
rn
Inside radius dish nominal
Ln
Design Code ASME (Section VIII , Div. 1)
Allowable stress S = 175.2
Corroded thickness 7.20 mm
Inside diameter 204.70 mm
Inside radius knuckle r = (not required)
Inside radius dish L = (not required)
(Constant K) 1.00 mm
Required wall thickness 0.29 mm
1.29 mm
12.24
t is OK
Weight
Enclosed volume
Type of shell Torispher.
Design pressure P 0.5
Design temperature T 220 ⁰CMaterial description A - 106 Gr. B
Yield stress, design temperature S 175.2
Specific gravity ρ 7850
Outside diameter 219.1 mm
Nominal wall thickness t 8.2 mm0 mm
0 mm
Corrosion allowance Ca 1 mm
N/mm2
tc = t - Ca - tol
D = Do - 2*tc
K = (1/6) * (2 + (D / (2*h)2) with h = D/4
tr = P*D*K / (2*S*E - 0,2P)
Nominal required thickness
trn = tr + Ca + tol
Max. Allowable Working Press. MAWP = 2*S*E*tc / (K*D + 0,2tc) N/mm2
Thickness analysis, t > trn ?
N/mm2
N/mm2
kg/m3
Do
Inside radius knuckle nom.
rn
Inside radius dish nominal
Ln
Tolerance tol 0 mmJoint efficiency E 1Design Code ASME (Section VIII , Div. 1)
Allowable stress S = 175.2
Corroded thickness 7.20 mm
Inside diameter 204.70 mm
Inside radius knuckle 1.00 mm
Inside radius dish 1.00 mm
(constant M) 1.00
Required wall thickness 0.00 mm
1.00 mm
1033.97
t is OK
Weight
Enclosed volume
Type of shell Kloepper
Design pressure P 0.5 ( = 1 MPa = 10 Bar )
Design temperature T 220 ⁰C
Material description A - 106 Gr. B
Yield stress, design temperature S 175.2
Specific gravity ρ 7850
Outside diameter 219.1 mm
Nominal wall thickness t 8.2 mmsee below mm only for torisph.
see below mm only for torisph.
Corrosion allowance Ca 1 mm
N/mm2
tc = t - Ca - tol
D = Do - 2*tc
r = rn + Ca + tol
L = Ln + Ca + tol
M = 0,25 * (3 + (L/r)0,5)
tr = P*L*M / (2*S*E - 0,2P)
Nominal required thickness
trn = tr + Ca + tol
Max. Allowable Working Press. MAWP = 2*S*E*tc / (L*M + 0,2tc) N/mm2
Thickness analysis, t > trn ?
N/mm2
N/mm2
kg/m3
Do
Inside radius knuckle nom.
rn
Inside radius dish nominal
Ln
Tolerance tol 0 mmJoint efficiency E 1Design Code ASME
Allowable stress S = 175.20
Corroded thickness 7.20 mm
Inside diameter 204.70 mm
21.91 mm
219.10 mm
Inside radius knuckle 22.91 mm
Inside radius dish 220.10 mm
(constant M) 1.52
Required wall thickness 0.48 mm
1.48 mm
7.48
t is OK
Weight
Enclosed volume
Type of shell
Design pressure P 0.5 ( = 1 MPa = 10 Bar )
Design temperature T 220 ⁰CMaterial description A - 106 Gr. B
N/mm2
tc = t - Ca - tol
D = D0 - 2*tc
Inside radius knuckle nom. rn = 0.1 * D0
Inside radius dish nominal Ln = D0
r = rn + Ca + tol
L = Ln + Ca + tol
M = 0,25 (3 + √L/r)
tr = P*L*M / (2*S*E - 0,2*P)
Nominal required thickness trn = tr + Ca + tol
Maxim. Allow. Working Press. MAWP = 2*E*S*tc / (M*L + 0,2*tc) N/mm2
Thickness analysis, t > tr,n ?
Korbbogen
N/mm2
Yield stress, design temperature S 175.2
Specific gravity ρ 7850
Outside diameter 219.1 mm
Nominal wall thickness t 8.2 mmsee below mm
see below mm only for torisph.
Corrosion allowance Ca 1 mm only for torisph.
Tolerance tol 0 mmJoint efficiency E 1Design Code ASME
Allowable stress S 175.20
Corroded thickness 7.20 mm
Inside diameter 204.70 mm
33.74 mm
Inside radius dish nominal 175.28 mm
Inside radius knuckle 34.74 mm
Inside radius dish 176.28 mm
(constant M) M = 0,25 * (3 + √L/r) 1.31
Required wall thickness 0.33 mm
1.33 mm
10.83
t is OK
Weight
Enclosed volume
N/mm2
kg/m3
Do
Inside radius knuckle nom.
rn
Inside radius dish nominal
Ln
N/mm2
tc = t - Ca - tol
D = D0 - 2*tc
Inside radius knuckle nom. rn = 0.154 * D0
Ln = 0.8 * D0
r = rn + Ca + tol
L = Ln + Ca + tol
tr = P*L*M / (2*S*E - 0,2P)
Nominal required thickness trn = tr + Ca + tol
Maxim. Allow. Working Press. MAWP = 2*E*S*tc / (M*L - 0,2tc) N/mm2
Thickness analysis, t > tr,n ?
Enclosed volume
2161.97214.16
Wall thickness calculation of Cylinder
according Dutch Rules
Type of shell Cylinder
Design pressure 0.5 ( = 1 MPa = 10 Bar )
Design temperature 220 ⁰C
Material description A-106 Gr. B
Yield stress, design temperature 175.2
Specific gravity ρ 7850
Outside diameter 219.1 mm
Length tangent to tangen L 2256 mm (If not a sphere)
Nominal wall thickness 8.2 mm
Corrosion allowance Ca 1 mmTolerance tol 1.03 mmStrength reduct. coëfficie z 1Semi angle at apex cone α 0 degree (For cone only)
Design Code
Allowable stress 117.38
Calculation thickness 6.17 mm
Pd N/mm2
Td
Re(Td) N/mm2
kg/m3
De
dn
Dutch Rules
f = f1 = 0.67 * Re(Td) N/mm2
d = dn - Ca - tol
Inside diameter 206.76 mm
Required wall thickness 0.47 mm
2.50 mm
0.07350
dn is OK
Weight
Enclosed volume
Wall thickness calculation of Cone
according Dutch Rules
Type of shell Cone
Design pressure 0.5 ( = 1 MPa = 10 Bar )
Design temperature 220 ⁰C
Material description A-106 Gr. B
Yield stress, design temperature 175.2
Specific gravity ρ 7850
Outside diameter 219.1 mmL 2256 mm (If not a sphere)
Nominal wall thickness 8.2 mm
Corrosion allowance Ca 1 mmTolerance tol 1.03 mm
z 1α 0 degree 0.00 rad.
Design Code(For cone only)
Allowable stress 117.38
Calculation thickness 6.17 mm
Inside diameter 206.76 mm
Di = De - 2*d
dr = Pd*De / (2*z*f +(Pd))
Nominal required thickness drn = dr + Ca + tol
Required strength reduction
zmin = Pd*(Di + d) / (2*d*f)
Thickness analysis, d >dr ?
Pd N/mm2
Td
Re(Td) N/mm2
kg/m3
De
Length tangent to tangent
dn
Strength reduct. coëfficientSemi angle at apex cone
Dutch Rules
f = f1 = 0.67 * Re(Td) N/mm2
d = dn - Ca - tol
Di = De - 2*d
Inside diameter 206.76 mm
Required wall thickness 0.47 mm
2.50 mm
0.073
dn is OK
Weight
Enclosed volume
Wall thickness calculation of Sphere
according Dutch Rules
Type of shell Sphere
Design pressure 0.5 ( = 1 MPa = 10 Bar )
Design temperature 220 ⁰C
Material description A-106 Gr. B
Yield stress, design temperature 175.2
Specific gravity ρ 7850
Outside diameter 219.1 mmL 2256 mm (If not a sphere)
Nominal wall thickness 8.2 mm
Corrosion allowance Ca 1 mmTolerance tol 1.03 mm
z 1α 0 degree (For cone only)
Design Code
Allowable stress 117.38
Calculation thickness 6.17 mm
Inside diameter 206.76 mm
Di = De - 2*d
dr = Pd*De /((2*z*f +(Pd))*cosα
Nominal required thickness drn = dr + Ca + tol
Required strength reduction
zmin = Pd*(Di + d*cosα) / (2*d*f*cosα)
Thickness analysis, d >dr ?
Pd N/mm2
Td
Re(Td) N/mm2
kg/m3
De
Length tangent to tangent
dn
Strength reduct. coëfficientSemi angle at apex cone
Dutch Rules
f = f1 = 0.67 * Re(Td) N/mm2
d = dn - Ca - tol
Di = De - 2*d
Required wall thickness 0.23 mm
2.26 mm
0.03675
dn is OK
Weight
Enclosed volume
Wall thickness calculation of heads
according ASME
Type of shell Ellipsoidal
Design pressure 0.5 ( = 1 MPa = 10 Bar )
Design temperature 220 ⁰C
Material description A - 106 Gr. B
Yield stress, design temperature 175.2
Specific gravity ρ 7850
Outside diameter 219.1 mm
Nominal wall thickness 8.2 mm
dr = Pd*De /((4*z*f )+(Pd))
Nominal required thickness drn = dr + Ca + tol
Required strength reduction
zmin = Pd*(Di + d) / (4*d*f)
Thickness analysis, d >dr ?
Pd N/mm2
Td
Re(Td) N/mm2
kg/m3
De
dn
see below mm only for torisph.
see below mm only for torisph.
Corrosion allowance Ca 1 mmTolerance tol 0 mm
z 1
Design Code
Calculation thickness 7.20 mm
(ellipsoidal only) 0.4595
31.24 mm
199.15 mm
(Constant 1) 2.29
(Constant 2) 1.07
(Constant 3) 1.51
265.09
Allowable stress dish 117.38
0.51 mm
1.51 mm
0.07
0.42 mm
1.42 mm
0.06
OK OK dn is OK
Inside radius knuckle nom.
ri1n
Inside radius dish nominal
ri2n
Strength reduct. coëfficient
Dutch Rules
d = dn - Ca - tol
k1 = 2*(he-dn) / (De-2*dn)with he = De/4
Inside radius knuckle nom. ri1n = 0.25 * (De-2*dn) * (1+k1
2 - (1-k1) * √(1+k12)
Inside radius dish nominal ri2n = 1/(4*k1) * (De-2*dn) * (1+k1
2 + (1-k1) * √(1+k12)
C1 = 101.125*(1.6-log(100*(ri1
/ri2
)))*(1-(d/(1.1*ri1
)))
C2 = 1 + 0.306*ln(1+(d/ri1)) + 0.1574*ln2(1+(d/ri1))
C3 = min (√C1, 2)
Allowable stress knuckle fe = C3 * Re(Td) N/mm2
f2 = 0.67 * Re(Td) N/mm2
Required wall thickn. knuckle drk = Pd*De*C1*C2 / (2*z*fe)
Nominal required thickness k. drkn = drk + Ca + tol
Required strength reduction kn.
Zmin,k = Pd*De*C1*C2 / (2*d*fe)
Required wall thickn. dish
drd = 2*Pd*ri2 / (4*z*f2 - Pd)
Nominal required thickness d. drdn = drd + Ca + tol
Required strength reduct. dish Zmin,d = Pd*(2*ri2 + d) / (4*d*f2)
Analysis, z > zmin,k and zmin,d
?
Stability analysis required ?
Weight
Enclosed volume
Type of shell Torispher.
Design pressure 0.5 ( = 1 MPa = 10 Bar )
Design temperature 220 ⁰C
Material description A - 106 Gr. B
Yield stress, design temperature 175.2
Specific gravity ρ 7850
Outside diameter 219.1 mm
Nominal wall thickness 8.2 mm
no value mm only for torisph.
no value mm only for torisph.
Corrosion allowance Ca 1 mmTolerance tol 0 mm
z 1
Design Code
Warning:
Calculation thickness 7.20 mm
Inside radius knuckle 1.00 mm
Inside radius dish 1.00 mm
(Constant 1) 312.94
(Constant 2) 2.34
(Constant 3) 2.00
350.40
Stability analysis required ?
Pd N/mm2
Td
Re(Td) N/mm2
kg/m3
De
dn
Inside radius knuckle nom.
ri1n
Inside radius dish nominal
ri2n
Strength reduct. coëfficient
Dutch Rules
0.05*ri2 ≤ ri1 ≤ 0.3*ri2
d = dn - Ca - tol
r1i = r1in + Ca + tol
r2i = r2in + Ca + tol
C1 = 101.125*(1.6-log(100*(ri1
/ri2
)))*(1-(d/(1.1*ri1
)))
C2 = 1 + 0.306*ln(1+(d/ri1)) + 0.1574*ln2(1+(d/ri1))
C3 = min (√C1, 2)
Allowable stress knuckle fe = C3 * Re(Td) N/mm2
Allowable stress dish 117.38
114.51 mm
115.51 mm
15.903
0.00 mm
1.00 mm
0.001
NOT OK
Weight
Enclosed volume
Type of shell Kloepper
Design pressure 0.5 ( = 1 MPa = 10 Bar )
Design temperature 220 ⁰C
Material description A - 106 Gr. B
Yield stress, design temperature 175.2
Specific gravity ρ 7850
Outside diameter 219.1 mm
Nominal wall thickness 8.2 mm
see below mm only for torisph.
see below mm only for torisph.
Corrosion allowance Ca 1 mm
Tolerance tol 0 mmz 1
Design Code
f2 = 0.67 * Re(Td) N/mm2
Required wall thickn. knuckle drk = Pd*De*C1*C2 / (2*Z*fe)
Nominal required thickness k. drkn = drk + Ca + tol
Required strength reduction kn. Zmin,k = Pd*De*C1*C2 / (2*d*fe)
Required wall thickn. dish drd = 2*Pd*ri2 / (4*Z*f2 - Pd)
Nominal required thickness d. drdn = drd + Ca + tol
Required strength reduct. dish Zmin,d = Pd*(2*ri2 + d) / (2*d*f2)
Analysis, z > zmin,k and zmin,d
?
dn is NOT ENOUGH ; change dn
Stability analysis required ?
Pd N/mm2
Td
Re (Td) N/mm2
kg/m3
De
dn
Inside radius knuckle nom.
ri1n
Inside radius dish nominal
ri2n
Strength reduct. coëfficient
Dutch Rules
Calculation thickness 7.20 mm
21.91 mm
219.10 mm
Inside radius knuckle 22.91 mm
Inside radius dish 220.10 mm
(Constant 1) 2.94
(Constant 2) 1.10
(Constant 3) 1.71
300.34
Allowable stress dish 117.38
0.59 mm
1.59 mm
0.082
0.47 mm
1.47 mm
0.066
YES YES dn is OK
Weight
d = dn - Ca - tol
Inside radius knuckle nom. ri1n = 0.1 * De
Inside radius dish nominal
ri2n = De
ri1 = ri1n + Ca + tol
ri2 = ri2n + Ca + tol
C1 = 101.125*(1.6-log(100*(ri1
/ri2
)))*(1-(d/(1.1*ri1
)))
C2 = 1 + 0.306*ln(1+(d/ri1)) + 0.1574*ln2(1+(d/ri1))
C3 = min (√C1, 2)
Allowable stress knuckle fe = C3 * Re(Td) N/mm2
f2 = 0.67 * Re(Td) N/mm2
Required wall thickn. knuckle drk = Pd*De*C1*C2 / (2*Z*fe)
Nominal required thickness k. drkn = drk + Ca + tol
Required strength reduction kn. Zmin,k = Pd*De*C1*C2 / (2*d*fe)
Required wall thickn. dish drd = 2*Pd*ri2 / (4*Z*f2 - Pd)
Nominal required thickness d. drdn = drd + Ca + tol
Required strength reduct. dish Zmin,d = Pd*(2*ri2 + d) / (4*d*f2)
Analysis, z > zmin,k and zmin,d
?
Stability analysis required ?
Weight
Enclosed volume
Type of shell
Design pressure 0.5 ( = 1 MPa = 10 Bar )
Design temperature 220 ⁰C
Material description A - 106 Gr. B
Yield stress, design temperature 175.2
Specific gravity ρ 7850
Outside diameter 219.1 mm
Nominal wall thickness 8.2 mm
see below mm only for torisph.
see below mm only for torisph.
Corrosion allowance Ca 1 mmTolerance tol 0 mm
z 1
Design Code
Calculation thickness 7.20 mm
33.74 mm
175.28 mm
Inside radius knuckle 34.74 mm
Inside radius dish 176.28 mm
(Constant 1) 1.90
(Constant 2) 1.06
(Constant 3) 1.38
241.51
Korbbogen
Pd N/mm2
Td
Re (Td) N/mm2
kg/m3
De
dn
Inside radius knuckle nom.
ri1n
Inside radius dish nominal
ri2n
Strength reduct. coëfficient
Dutch Rules
d = dn - Ca - tol
Inside radius knuckle nom. ri1n = 0.154 * De
Inside radius dish nominal ri2n = 0.8 * De
ri1 = ri1n + Ca + tol
ri2 = ri2n + Ca + tol
C1 = 101.125*(1.6-log(100*(ri1
/ri2
)))*(1-(d/(1.1*ri1
)))
C2 = 1 + 0.306*ln(1+(d/ri1)) + 0.1574*ln2(1+(d/ri1))
C3 = min (√C1, 2)
Allowable stress knuckle fe = C3 * Re(Td) N/mm2
Allowable stress dish 117.38
0.46 mm
1.46 mm
0.064
0.38 mm
1.38 mm
0.053
YES YES dn is OK
Weight
Enclosed volume
f2 = 0.67 * Re(Td) N/mm2
Required wall thickn. knuckle drk = Pd*De*C1*C2 / (2*z*fe)
Nominal required thickness k. drkn = drk + Ca + tol
Required strength reduction kn. Zmin,k = Pd*De*C1*C2 / (2*d*fe)
Required wall thickn. dish drd = 2*Pd*ri2 / (4*Z*f2 - Pd)
Nominal required thickness d. drdn = drd + Ca + tol
Required strength reduct. dish Zmin,d = Pd*(2*ri2 + d) / (4*d*f2)
Analysis, z > zmin,k and zmin,d
?
Stability analysis required ?
106.461448.52
50.680.62
110.271.81
0.790.461.060.01
-0.45-5.551.640.70
0.71430.65540.01181.0836
0.81160.34350.00561.0576
Torispherical headDIN 28011
Semi ellipsoidal headDIN 28013
Standard-type/flat dished he
Hemispherical head
Convex disc
R = Do
r = 0,1 x Do
h1 >= 3,5 x s
h2 = 0,1935 x Do - 0,455 x s
h3 = h1 + h2
R = 08 x Do
r = 0,154 x Do
h1 = 3 x s
h2 >= 0,255 x Do - 0,63 x s
h3 = h1+ h2
R = Do (standard-type head)R = 1,3 x Do (flat dished head)
r = 15-50 mm, on request > 50 mmh1 >= 3,5 x s
h2 = dished height
h3 = h1 + h2
Di = Do - 2 x s
R = 0,5 x Di
h1 = as per specification
h2 = R
h3 = h1 + h2
Form R = Do
h2 = 0,134 x Do
Flat head
r = 15 - 50 mm
Plate-type head
Diffuser head
r = max. 100 mm
Cone
on request
Ellipsoidal head
Form R = 0,8 x Do
h2 = 0,176 x Do
Form R => Do on request possible
h1 >= 3,5 x s
h3 = h1 + h2
R = Di
h2 = 0,134 x Di
R >= Do
h1 >= 3,5 x s
Di = Do - 2 x s
R = 0,9 x Di
r = 0,17 x Di
h1 = as per specification
h2 = 0,25 x Di
h3 = h1 + h2
Korbbogen head (ellipsoidal) acc. DIN 28013
Measurement
D = outside dimension s = wallthickness before forming r = inside knuckle radius (0,154D)R = inside radius ( R=0,8D)h = Straight flange height (3 x s)H = total height (-0,251D + s + h)
Datos útiles:
Klopper head (ellipsoidal) acc. DIN 28011
Dimensionamiento
- Capacidad: V = 0,13 Di3 (sin h)
- Superficie del disco: S = (Õ/4) *D2 d
r1 = da
r2 = 0,1 da
CISTERNAS DE COMBUSTIBLE
Underground Tank Standard