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GB/T 16508.3-2013 (GBT 16508.3-2013)

Chinese standards (related to): 'GB/T 16508.3-2013'
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)See DetailStatusGoogle Book
GB/T 16508.1-2022English459 Add to Cart 4 days Shell boilers - Part 1: General requirements GB/T 16508.1-2022 Valid GBT 16508.1-2022
GB/T 16508.3-2022EnglishRFQ ASK 3 days Shell boilers - Part 3: Design and strength calculation GB/T 16508.3-2022 Valid GBT 16508.3-2022
GB/T 16508.1-2013English140 Add to Cart 0--3 minutes. Auto immediate delivery. Shell boilers -- Part 1: General requirements GB/T 16508.1-2013 Valid GBT 16508.1-2013
GB/T 16508.3-2013English230 Add to Cart 0--3 minutes. Auto immediate delivery. Shell boilers -- Part 3: Design and strength calculation GB/T 16508.3-2013 Valid GBT 16508.3-2013
GB/T 16508-1996English2969 Add to Cart 14 days Strength calculation of pressure parts for shell boilers GB/T 16508-1996 Obsolete GBT 16508-1996


   
BASIC DATA
Standard ID GB/T 16508.3-2013 (GB/T16508.3-2013)
Description (Translated English) Shell boilers. Part 3: Design and strength calculation
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J98
Classification of International Standard 27.060.30
Word Count Estimation 76,753
Older Standard (superseded by this standard) GB/T 16508-1996
Quoted Standard GB/T 1576; GB/T 2900.48; GB/T 9252; GB/T 12145; GB 13271; GB/T 16508.1-2013; GB/T 16508.2; GB/T 16508.4; NB/T 47013; JB/T 4730; TSG G0001; TSG G0002
Drafting Organization Shanghai IndustrialBoiler Research Institute
Administrative Organization National Standardization Technical Committee of Boiler and Pressure Vessel
Regulation (derived from) National Standards Bulletin 2013 No. 27
Proposing organization National Boiler and Pressure Vessel Standardization Technical Committee (SAC/TC 262)
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the basic shell boiler pressure components of the design and construction requirements and gives the cast iron boiler (Appendix A), a rectangular box set (Appendix B) and plumbing tube sheet (Appendix C) of the basic design require


GB/T 16508.3-2013: PDF in English (GBT 16508.3-2013)
GB/T 16508.3-2013
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 27.060.30
J 98
Replacing GB/T 16508-1996
Shell Boilers -- Part 3: Design and strength calculation
ISSUED ON: DECEMBER 31, 2013
IMPLEMENTED ON: JULY 1, 2014
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine of the PRC;
Standardization Administration of the PRC.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Terms and Definitions ... 6
4 Symbols and Units ... 6
5 Basic Requirements for Design ... 7
6 Cylindrical Parts Subject to Internal Pressure ... 13
7 Cylindrical Boiler Furnace, Circular Flue, Smoke Tube and Other Part
Subject to External Pressure ... 30
8 Convex Head, Boiler Furnace Top, Hemispherical Boiler Furnace and
Convex Tube Plate ... 46
9 Flat Plates and Tube Plates with Tension Brace (Support and Reinforcement)
... 55
10 Tension Braces and Reinforcing Parts ... 66
11 Flat Cover and Cover Plate ... 76
12 Foot Ring ... 81
13 Opening and Opening Reinforcement ... 84
14 Welded Tee Junction ... 96
15 Verification Method for Determining Maximum Permissible Operating
Pressure of Part ... 101
Appendix A (Informative) Design Calculation of Pressure Part on Cast-iron
Boiler ... 108
Appendix B (Informative) Design Calculation of Rectangular Header ... 110
Appendix C (Informative) Design Calculation of Water Tube Plate ... 116
Shell Boilers -- Part 3: Design and strength calculation
1 Scope
This Part of GB/T 16508 specifies the design and structural requirements for basic
pressure parts of shell boilers, and provides the basic design requirements for cast-
iron boiler (Appendix A), rectangular header (Appendix B) and water tube plate
(Appendix C).
This Part is applicable to the design calculation for cylindrical parts subject to internal
and external pressures, heads, tube plates, tension braces and foot rings as well as
opening and reinforcement.
2 Normative References
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the normative document (including any amendments) applies.
GB/T 1576 Water Quality for Industrial Boilers
GB/T 2900.48 Electrotechnical Terminology of Boilers
GB/T 9252 Method for Cycling Test of Gas Cylinders
GB/T 12145 Quality Criterion of Water and Steam for Generating Unit and
Steam Power Equipment
GB 13271 Emission Standard of Air Pollutants for Boiler
GB/T 16508.1-2013 Shell Boilers - Part 1: General Requirements
GB/T 16508.2 Shell Boilers - Part 2: Material
GB/T 16508.4 Shell Boilers - Part 4: Fabrication, Inspection and
Acceptance
NB/T 47013
(JB/T 4730)
Nondestructive Testing of Pressure Equipment
TSG G0001 Boiler Safety Technical Supervision Administration
Regulation
TSG G0002 Supervision Administration Regulation on Energy
Conservation Technology for Boiler
3 Terms and Definitions
For the purposes of this document, the terms and definitions established in GB/T
16508.1 and GB/T 2900.48 apply.
4 Symbols and Units
Meanings and units of the symbols used in chapters and sections of this Part are as
follows:
Et - the elasticity modulus of material upon temperature calculation, MPa;
p - the calculating pressure, MPa;
[p] - the maximum permissible operating pressure upon verifying calculation, MPa;
pr - the rated pressure of boiler, MPa;
p0 - the operating pressure, MPa;
ts - the saturation temperature of medium corresponding to the calculating pressure
(the rated outlet temperature of hot water boiler), °C;
tc - the calculating temperature, °C;
tmave - the rated average temperature of medium, °C;
Δpa - the design additional pressure (the set pressure of relief valve), MPa;
Δph - the liquid column static pressure borne by pressure part, MPa;
Δpf - the additional pressure of dynamic resistance of medium flow, MPa;
η - the correction coefficient;
shall not exceed 2000mm; where butt connection is adopted for boiler furnace ends
and tube plate flange, the calculating length of the plain boiler furnace may be
increased to 3000mm.
5.1.4 The lowest safe water level of the steam boiler shall be 100mm higher than the
highest fire line; however, for the horizontal shell boiler with the inside diameter not
greater than 1500mm, the lowest safe water level shall be 75mm higher than the
highest fire line. The minimum and maximum safe water level of the boiler shall be
indicated in the drawing.
5.1.5 The structural type of pressure component (part) as well as the arrangement of
openings and welds shall avoid or reduce the combined stress and stress
concentration as possible. The adopted weld type shall comply with the design
document and GB/T 16508.4. The weld subject to non-destructive testing shall be
designed as the type for which the required non-destructive testing may be carried out.
5.1.6 Full-penetration butt joint shall be adopted for main weld of the main pressure
part for the boiler (e.g. longitudinal and circumferential welds of shell, boiler furnace,
reversal chamber and header, as well as butt welds of head, tube plate, boiler furnace
top and foot ring); overlapped structure shall not be adopted for the weld of boiler
pressure part; splicing shall not be adopted for tension brace.
5.1.7 Where the inside diameter of shell is greater than 1000mm, man-hole shall be
arranged on the shell or head (tube plate); where personnel cannot enter into the boiler
due to structural constraint, only inspection hole may be arranged; for the boiler with
smoke tube arranged in shell, the arrangement of man-hole and inspection hole shall
give consideration to the overhaul demand of both upper and lower parts of shell; for
the shell boiler with inside diameter of shell as 800~1000mm, at least one inspection
hole shall be arranged on shell or head (tube plate); the quantity of hand-holes
arranged at the lower part of vertical shell boiler shall meet the requirements of
cleaning and inspection and shall not be less than 3.
5.1.8 For the boiler with furnace, the combustion shall be completed in furnace.
Water entering into the boiler shall not directly scour the boiler furnace. For the boiler
with inside diameter of furnace greater than 1400mm or heat input greater than 12MW,
at least 3 measuring points shall be arranged in boiler for temperature measurement.
5.1.9 The hydraulic test pressure shall meet the requirements of GB/T 16508.1.
5.1.10 Corrosion allowance
The corrosion allowance shall meet the following requirements:
a) For the pressure parts with nominal thickness δ>20mm and all plain
5.4 Discharge requirements
5.4.1 The excess air coefficient at smoke discharge point shall meet the following
requirements:
a) For the combustion boiler in coal combustion chamber and the layered coal-
burning boiler with membrane wall, the excess air coefficient at smoke
discharge point shall not exceed 1.4;
b) For other layered coal-burning boiler, the excess air coefficient at smoke
discharge point shall not exceed 1.65;
c) For the pressure combustion oil-fired (gas-fired) boiler, the excess air coefficient
at smoke discharge point shall not exceed 1.15;
d) For the negative pressure combustion oil-fired (gas-fired) boiler, the excess air
coefficient at smoke discharge point shall not exceed 1.25.
5.4.2 During system design of boiler, the drive motor of matched auxiliary machine
of boiler should be equipped with frequency converter.
5.4.3 The design smoke discharge temperature of boiler shall meet the following
requirements:
a) Not higher than 230°C for steam boiler with rated evaporation less than 1t/h;
b) Not higher than 180°C for hot-water boiler with rated thermal power less than
0.7MW;
c) Not higher than 170°C for steam boiler with rated evaporation greater than or
equal to 1t/h and hot-water boiler with rated thermal power greater than or equal
to 0.7MW.
5.4.4 The boiler shall be equipped with necessary desulfurization and dedusting
equipment and should be equipped with de-nitration equipment; the discharge of boiler
air pollutants shall meet the requirements of GB 13271.
5.5 Permissible stress
5.5.1 The permissible stress [σ]J of common materials in this Part is selected
according to GB/T 16508.2; sometimes structural characteristics and operating
conditions of parts shall also be considered while used for design calculation; multiply
the correction coefficient according to Formula (1):
cylindrical parts subject to internal pressure, including shell, header, internal pressure
tube, large horizontal water tube, etc.
6.2 Symbols and units
a - the arc length between two openings along the mean-diameter peripheral
direction of the shell upon calculating the slant ligament efficiency, mm;
a1 - the technological coefficient of bent tube;
b1 - the thickness reduction ratio of actual manufacturing process of outer thickness
of bent tube;
C - the additional thic......