ICS23.020.30 J 74
National Standard of the People's Republic of China
中华人民共和国国家标准
GB150.3-2011
PartiallyReplaceGB150-1998
Pressure Vessels- Part 3: Design
压力容器第3部分：设计
Issueon:November21,2011
Implemented on:March 1,2012
Issued by General Administration of Quality Supervision, Inspection and Quarantine
of thePeople'sRepublic ofChina StandardizationAdministration of thePeople'sRepublic of China Contents
Scop Normative References.
2
Cylinders and Spherical Shells Under Internal Pressure
3
Cylinder and Spherical Shell Under External Pressure 5 Heads 6 Openings and Reinforcement 7 Flange Appendix A (Normative) Noncircular Cross Section Vessels... Appendix B (Normative) Flat Steel Ribbon Wound Cylinder. Appendix C (Informative) Seal Structure Appendix D (Informative) Structure of Welding Joint. Appendix E (Normative) Basic Design Requirements for Low Temperature Pressure Vessels ....266
4
.27
70
102
.150 .187 191
.240 Forward
Appendix C and Appendix D of this part in this standard are recommendatory and others are mandatory.
This standard GB 150 "Pressure Vessels" consists of the following four parts:
-Part 1: General Requirements; Part 2: Materials; -Part 3: Design; Part 4:Fabrication, Inspection and Testing,and Acceptance. This part is “"Part 3: Design" of GB 150"Stationary Pressure Vessels". This part is drafted
according to the rules provided by GB/T 1.1-2009 Directives for Standardization".
On the basis of Chapter5~Chapter 9, Appendix C,Appendix D, Appendix G and Appendix J of GB 150-1998, this part was revised and prepared in combination of the actual demand of the design of basic pressure components of pressure vessels and the revision proposal of the relevant standards and in order to meet the requirements of Supervision Regulation on Safety Technology for Stationary Pressure Vessel.The main changes of this part over GB 150-1998 are as follows:
Corresponding to Chapter 5 "Cylinder and Spherical shell Subjected to Internal Pressure" of
the former GB 150-1998, Chapter 3 of this part adds the corresponding formulae for design calculation of wall thickness according to external diameter.
Corresponding Chapter 6"Cylinder and Spherical shell Subjected to External Pressure"of
the former GB 150-1998, the main content changes in Chapter 4 of this part are:
a)The external pressure curve diagrams are revised and external pressure curve diagrams
corresponding to high-strength materials are added; b)The selection table of curve diagram of stress coefficient B corresponding to the material
is added; c)The structural design of reinforcing ring is modified partially Corresponding Chapter 7Heads and Covers"of theformer GB150-1998, the main content
changes in Chapter 5 of this part are:
a)The design calculation methods for such components as eccentric conical shell, low
pressure flat head, reinforced flat head and stay structure are added; b) The K coefficient of parts of flat-covers is adjusted; c) The design method of plastic analysis applicable to full penetration connection for flat
head and cylinder is added; d)The design method for spherical cap head and conical shell where $/R<0.002 is added. Corresponding to Chapter8"Opening and Reinforcementsof theformer GB 150-1998.
Chapter 6 of this part enlarges the contents of design calculation methods for opening and opening reinforcement and includes the integral reinforcement design method for the radial parallel and level connection pipes ofcylinder body,by which,the application scope ofopening rate may reach o.9
Corresponding to Chapter 9Flanges"of the former GB 150-1998, the main changes in
Chapter 7 of this part are as follows:
a)The stiffness checking and calculation requirements of the integral flange and the
optional flanges calculated according to integral flange are added; b)The selection parameters for corrugated tooth gasket design are supplemented -The contents relevant to design in Appendix C "Low Temperature Pressure Vessels" of GB
150-1998 turn toAppendixE of this part.
Contents of Appendix D, Appendix G and Appendix J of GB 150-1998 are included in
Appendix A, Appendix C and Appendix D of this part.
The main adjusted or changed contents are: a)Appendix B “Flat Steel Ribbon Wound Cylinder" is added; b)In Appendix C, the application scope of double-cone ring seal is enlarged; c)In Appendix D, the welded structure is arranged and supplemented again according to
the practical conditions.
This part was proposed by and is under the jurisdiction of the National Technical Committee on Boilers and Pressure Vessels of Standardization Administration of China (SAC/TC 262)
Drafting organization of this part: China Special Equipment Inspection and Research Institute Sinopec Engineering Incorporation, Tsinghua University, Zhejiang University, Zhejiang University of Technology, SINOPEC Shanghai Engineering Co., Ltd., and China Huanqiu Contracting & Engineering Corporation.
Chief drafting staff of this part: Shou Binan, Yang Guoyi, Li Shiyu, Xue Mingde, Xu Feng Zheng Jinyang, Gao Zengliang, Sang Rubao, Qin Shujing, Ye Rixin, Feng Qingxiao, Xie Tiejun. Chen Zhaohui, Chen Zhiwei, Chen Bingbing, Zhang Yingkai, and Zhu Guodong.
The previous editions of the standard replaced by this part are:
GB150-1989andGB150-1998. PressureVesselsPart3:Design
1 Scope
GB 150.3 specifies the design requirements for the basic pressure parts of pressure vessels. This part is applicable to the design calculation of cylinders and spherical shells under internal
pressure, cylinders and spherical shells under external pressure, head, openings and reinforcements. and flanges.
This part provides the basic design requirements for the noncircular cross section vessel (Normative Appendix A), flat steel ribbon wound cylinders (Normative Appendix B), common hermetically sealed structures (Informative Appendix C)and structures of welding joints (Informative Appendix D).
This part also provides the basic design requirements for the low temperature pressure vessels (Normative Appendix E) 2 Normative References
The following documents are absolutely essential to the application of this part.For dated reference documents, only the dated versions apply to this part; for undated reference documents, the latest versions (including all amendments) apply to this part.
GB150.1-2011“PressureVessels—Part1:General Requirements" GB 150.2"Pressure Vessels—Part 2: Materials" GB 150.4“Pressure Vessels—Part 4: Fabrication, Inspection and Testing, and Acceptance" GB/T 985.1 “Recommended Joint Preparation for Gas Welding, Manual Metal Arc Welding:
Gas-shield Arc Welding and Beam Welding"
GB/T985.2“Recommended Joint Preparation for Submerged Arc Welding' JB/T 4700 "Type and Specification for Pressure Vessel Flanges" JB/T 4701 “"A-type Socket-weld Flange" JB/T 4702“B-type Socket-weld Flange" JB/T 4703 Welding Neck Flange" JB/T 4704Nonmetallic Gaskets" JB/T 4705"Spiral Wound Gaskets" JB/T 4706"Double-jacketed Gaskets" JB/T 4707"Stud Bolts" JB/T 4736"Reinforcing Ring" 3Cylinders and Spherical Shells Under Internal Pressure 3.1The calculation formulae of this chapter are applicable to single-layer, wrapped layered and shrink fit cylinders and spherical shells. The design calculation for the flat steel ribbon wound cylinder shall be in accordance with Appendix B. 3.2Terms, Definitions and Symbols 3.2.1The terms and definitions in GB 150.1 are applicable to this part. 3.2.2Symbols
The additional thickness (according to GB 150.1), mm; the C value of inner cylinder only will be considered for the wrapped layered cylinders and the shrink fit cylinders:
D;The internal diameter of cylinder or spherical shell, mm; D。The external diameter of cylinder or spherical shell (D.=D;+2on), mm; PeThe design pressure, MPa; [pw]The maximum allowable operating pressure of cylinder or spherical shell, MPa; The calculated thickness of the cylinder or spherical shell, mm; o.The effective thickness of cylinder or spherical shell, mm;
The nominal thickness of the inner cylinder of wrapped layered cylinder or shrink fit cylinder, mm;
0:
Sn The nominal thickness of cylinder or spherical shell, mm; 0o The total thickness of the plate layers for wrapped layered cylinder and the shrink fit
layers for shrink fit cylinder, mm; The calculated stress of cylinder or spherical shell at the design temperature, MPa;
[o]' The allowable stress of the materials for cylinder or spherical shell at design temperature
(according to GB 150.2), MPa;
[α;] -The allowable stress of the inner cylinder materials for wrapped layered cylinder or shrink
fit cylinder at the design temperature (according to GB 150.2), MPa;
[α。]- -The allowable stress of the plate layer materials for wrapped layered cylinder or of the
shrink fit layer materials for shrink fit cylinder, MPa; -Welding joint coefficient;
0
OThe welding joint coefficient of the inner cylinder for wrapped layered cylinder and
shrink fit cylinder; The welding joint coefficient of the plate layer for wrapped layered cylinder and of the shrink fit layer for shrink fit cylinder.
00
3.3 Cylinder calculation
The application scope of formulae in this section is: P≤0.4[o]'o. The calculated thickness of the
2