公司 EQUIPMENT Co.,Ltd 压力容器计算书 计算书号Cal. No. Calculation Sheet For 版 次 Pressure Vessel Rev. No. JD-15-01 0 产 品 名 称：空气储罐 Product Name : Air Storage Tank 施 工 图 号：JDY15001/1 Drawing. No. JDY15001/1 版 次：0 Rev.： 0 0 版 次 Rev. 编 制 Prepared By 批 准 Approved By 授权检验师 Authorized Inspector 0
公司 EQUIPMENT Co.,Ltd 压力容器计算书 计算书号Cal. No. Calculation Sheet For 版 次 Pressure Vessel Rev. No. JD-15-01 0 设 计 计 算 书 Design Calculation Sheet
1. 设计参数和条件 Design Data and Condition:
1) 设计所遵循的规范 Applicable Design Code:
ASME SectionⅧ，Div.1, 2013 2) 设计压力(p) : 内部1.3Mpa
Design Pressure (p): Internal 1.3 MPa 3) 设计温度: 60℃
Design Temperature: 60℃
4) 焊接接头系数(E): 壳体为0.85，封头为0.85(无缝)
Joint Efficiency (E): 0.85 for Shell and 0.85 for Heads（ seamless） 5) 材料最大许用应力 Material Max. Allowable Stress: Based on ASME Code Sec.Ⅱ, Part D Table 1A 壳体和封头: SA516 Gr. 485，60℃时为138MPa
Shell & Heads: SA516 Gr. 485 Material Max. Allowable Stress is 138MPa at 60℃； 接管: SA105M钢，60℃时为138MPa Nozzles：SA105M Steel Material Max. Allowable Stress 138 MPa at 60℃； 6) 媒介: 空气
Medium: Air (Non lethal) 7) 封头类型: 2:1椭圆封头
Head type: 2:1Ellipsoidal Head；
8) 其他载荷: 依据“客户设计说明书”（Doc. No. TS-15-01 Rev.0） Others Loadings: As Shown in“Customer’s Design Specification” (Doc. No. TS-15-01 Rev. 0) 9) 腐蚀余度:2.0 mm
Corrosion Allowance: 2.0 mm 10) 容器外形和尺寸：依据“客户设计说明书”（Doc. No. TS-15-01 Rev.0） Layout of Vessel and Dimension:
As Shown in“Customer’s Design Specification” (Doc. No. TS-15-01 Rev. 0) 11) 钢印要求: 要求ASME标识
Stamp required: ASME Certification Mark required 12) NB要求: 不要求NB钢印
NB stamp required: NO ―NB‖ stamp required.
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公司 EQUIPMENT Co.,Ltd 压力容器计算书 计算书号Cal. No. Calculation Sheet For 版 次 Pressure Vessel Rev. No. JD-15-01 0 2. 计算 Calculation: Verify for UG-22 Loading
1. Internal Design Pressure 内压设计压力 2. External Design Pressure 外压设计压力 3. Weight of the Vessel 容器重量 4. Weight of Normal Contents Under Operating Conditions 在操作状态下容器内部正常介质的重量 5. Weight of Normal Contents Under Test Conditions 在试验状态下容器内部正常介质的重量 6. Superimposed Static Loadings From Weight of Attached Equipment 附属设备的重量产生的附加静载荷 7. The Attachment of Internals 内部附件 8. The Attachment of Lifting Lugs 吊耳 9. The Attachment of Vessel of Vessel Support (Skirt, Legs, Saddles, Etc.) 容器的支座（裙座、支架、鞍座等） 10. Cyclic and Dynamic reactions due to Pressure or thermal variations,or from equipment mounted on a vessel,and mechanical loading. 由压力或温度变化而引起的，或由容器上的设备引起的周期性和动荷反作用力以及机械载荷。 11. Wind Loadings 风负荷 12. Snow Loadings 雪负荷 13. Seismic Loadings 地震负荷 14. Impact Loadings Such As Those Due to fluid shock 冲击载荷，例如由流体冲击而引起的等 15. Temperature Gradients and Differential Thermal Expansion 温度梯度及不同的热膨胀 16. Abnormal pressures,such as those caused by deflagration 例如由爆燃引起的各种异常压力 17. Test pressure coincident static head acting during the test. 在试验期间所作用的试验压力和共同作用的静压头 Yes √ √ √ √ √ No √ √ √ √ √ √ √ √ √ √ √ √
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公司 EQUIPMENT Co.,Ltd 压力容器计算书 计算书号Cal. No. Calculation Sheet For 版 次 Pressure Vessel Rev. No. JD-15-01 0 2.1 内压壳体最小厚度 Min. Required Thickness of Shell under Internal Pressure
符号 Symbols:
t= 壳体要求最小厚度，mm
t = minimum required thickness of shell, mm P = 内部设计压力, 1.3MPa
P = internal design pressure, 1.3 MPa [see UG-21] R = 预计容器筒内半径， 250mm
R = inside radius of the shell course under consideration, 250mm S = 最大许用应力值，138MPa
S = maximum allowable stress value, 138MPa [ see ASME Code Part II D
Table 1A for material SA-516 Gr.485] E = 焊接接头系数，0.85
E = joint efficiency, 0.85 [see Table UW-12(1)]
Since P=1.3MPa is less than 0.385SE=45.16MPa, Formula UG-27(c)(1) is used:
t?PR1.3?(250?2)??2.81(mm)
SE?0.6P138?0.85?0.6?1.3考虑腐蚀裕量：
Consider of corrosion allowable: tr= t + Ca = 2.81 + 2.0 = 4.81mm
These formulas will govern only when the circumferential joint efficiency is less than one-half the longitudinal joint efficiency, according to UG-27(c) (2) note 20, the formula UG-27(c) (2) for longitudinal stress needn’t considered. 公称钢板规则厚度=10mm
Nominal Plate Thickness Ordered = 10 mm
钢板厚度可允许下偏差=0.25mm[see UG-16(c)] Plate Under tolerance=0.25 mm [ see UG-16(c)]
UG-16 (b)(4) the minimum thickness of pressure retaining components >2.5mm for air service(exclusive any corrosion allowance). 实际使用厚度=10-0.25=9.75> 4.81mm，并且也>2.5+2mm,可以。 Actual Used Thickness = 10 -0.25=9.75>4.81 mm, and >2.5+2 mm(Ca) So it is satisfactory.
2.2 椭圆封头最小厚度 Min. Required Thickness of Ellipsoidal Heads
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公司 EQUIPMENT Co.,Ltd 压力容器计算书 计算书号Cal. No. Calculation Sheet For 版 次 Pressure Vessel Rev. No. JD-15-01 0 符号 Symbols: t = 封头成形后要求最小厚度，mm
t = minimum required thickness of head after forming, mm. ts = 封头成形后规定的最小厚度，ts=8.8mm
ts = minimum specified thickness of head after forming , ts=8.8mm P = 内部设计压力, 1.3 MPa
P = internal design pressure, 1.3 MPa [see UG-21]
D =椭圆封头长轴内部长度，500+4mm(考虑腐蚀裕量)
D = inside length of major axis of the ellipsoidal head, 500+4mm(under
corrosion condition)
h =椭圆封头短轴长度的一半，125+2mm(考虑腐蚀裕量)
h = one-half of the length of the minor axis of the ellipsoidal head,
125+2mm(under corrosion condition) S =最大安全允许应力值，138 MPa
S = maximum allowable stress value, 138MPa [ see ASME Code Part II D,
Table 1A for material SA516 Gr.485], E =焊接接头系数，0.85
E = joint efficiency, 0.85 [ for Seamless Head and see UW-12(d) ]. E1 =筒体与封头的焊接接头系数，0.85 E1 = joint efficiency of shell and head,0.85 Ca=腐蚀裕量，2mm
Ca=corrosion allowance, 2mm K1 = 球半径系数，0.9
K1 = 0.9 [see Table UG-37, D/2h=2] L =当量球半径 K1D = 0.9×504 = 453.6mm L = K1D = 0.9×504=453.6mm [see 1-4(b)] Since ts /L=7.1÷450=0.015 More Than 0.002, Formula UG-32(d)(1) to Be Used:
考虑允许的腐蚀裕量：t= t+Ca=2.78+Ca=2.78+2.00=4.78mm
Consider of corrosion allowable: t = t+Ca=2.78+Ca=2.78+2.00=4.78mm
UG-16 (b)(4) the minimum thickness of pressure retaining
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