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GB/T 12712-2023: Technical management requirements for condensate recovery and automatic steam traps of steam heating system
Status: Valid GB/T 12712: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 12712-2023 | English | 349 |
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Technical management requirements for condensate recovery and automatic steam traps of steam heating system
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GB/T 12712-2023
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| GB/T 12712-1991 | English | 479 |
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requirements for supervision of recovery of condensate from steam heating system and technique of automatic steam traps
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GB/T 12712-1991
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PDF similar to GB/T 12712-2023
Basic data | Standard ID | GB/T 12712-2023 (GB/T12712-2023) | | Description (Translated English) | Technical management requirements for condensate recovery and automatic steam traps of steam heating system | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | F01 | | Classification of International Standard | 27.010 | | Word Count Estimation | 18,192 | | Date of Issue | 2023-09-07 | | Date of Implementation | 2024-04-01 | | Older Standard (superseded by this standard) | GB/T 12712-1991 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 12712-2023: Technical management requirements for condensate recovery and automatic steam traps of steam heating system
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 27.010
CCSF01
National Standards of People's Republic of China
Replace GB/T 12712-1991
Condensate recovery and steam trap in steam heating system
Technical management requirements
Published on 2023-09-07
2024-04-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Table of contents
PrefaceⅠ
1 Scope 1
2 Normative reference documents 1
3 Terms and Definitions 1
4 Principles of condensate recovery 2
5 Basic formula for hydraulic calculation of condensate pipeline 2
5.1 Calculation of friction coefficient 2
5.2 Specific pressure drop calculation 2
6 Technical requirements for condensate recovery system 2
6.1 System Division 2
6.2 System selection and determination 3
6.3 System application technical conditions 3
6.4 Other technical requirements of the system 5
7 Technical requirements for steam traps 6
7.1 Category 6
7.2 Setting 6
7.3 Selection Principle 6
7.4 Parameter determination 6
7.5 Installation 7
8 Management and Evaluation Requirements 8
8.1 System and personnel 8
8.2 Operation and Monitoring 8
8.3 Maintenance, care and overhaul9
8.4 Rating 9
Appendix A (informative) Recommended safety rate for steam trap selection 10
Appendix B (Informative) Steam Trap File Card 12
Appendix C (informative) Condensate recovery and usage ledger 13
Reference 14
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents"
Drafting.
This document replaces GB/T 12712-1991 "Technical Management Requirements for Condensate Recovery and Steam Traps in Steam Heating Systems" and is consistent with
Compared with GB/T 12712-1991, in addition to structural adjustments and editorial changes, the main technical changes are as follows.
a) Added the terms and definitions of “steam trap equipment rate” and “steam trap sampling rate” (see 3.2, 3.3); deleted “open type”
System", "Closed system", "Calculation of steam content in pipe sections", "Unit drainage method", "Group drainage method", "Actual working of steam traps"
"Pressure", "Actual operating back pressure of steam trap", "Actual maximum operating back pressure of steam trap" terms and definitions (see
3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 3.10 of the.1991 edition);
b) Changed the principle of condensate recovery (see Chapter 4, Chapter 5 of the.1991 edition);
c) The technical requirements for the condensate recovery system have been changed and the technical requirements for the open system have been added (see Chapter 6, Chapter 6 of the.1991 edition)
Chapter 8);
d) The technical requirements for steam traps have been changed, and the classification of steam traps has been added (see Chapter 7, Chapter 7 of the.1991 edition,
Chapter 9);
e) Management and evaluation requirements have been changed, and system management requirements have been added (see Chapter 8, Chapter 10 and 11 of the.1991 edition);
f) The appendix "Steam Trap Action Detection Method" has been deleted (see Appendix A of the.1991 edition).
Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents.
This document is proposed and coordinated by the National Energy Basics and Management Standardization Technical Committee (SAC/TC20).
This document was drafted by. China Institute of Standardization, Gansu Hongfeng Machinery Co., Ltd., Yinqiu Energy Saving Engineering Co., Ltd., Dalian China
Zhi Precision Technology Co., Ltd., Newton Fluid Technology Co., Ltd., Fleur Antimony (Guangdong) Engineering Equipment Co., Ltd., China Energy Construction
Group Tianjin Electric Power Construction Co., Ltd., PetroChina Jilin Chemical Engineering Co., Ltd.
The main drafters of this document. Liang Xiuying, Guo Yudong, Li Bingcheng, Huang Ying, Shao Guijun, Chen Haihong, Wei Hong, Zhang Sinan, Wang Shuiyuan, Zhang Qingnian,
Zhang Yifeng and Dai Guoxing.
This document was first published in.1991 and this is the first revision.
Condensate recovery and steam trap in steam heating system
Technical management requirements
1 Scope
This document establishes the principle of condensate water recovery in steam heating systems, provides the basic formula for hydraulic calculation of condensate water pipelines, and stipulates the
Technical requirements and management and evaluation requirements for the selection, installation and application of water recovery systems and steam traps.
This document is applicable to the drainage and return of condensate water in steam heating systems with a nominal pressure not greater than PN40 and a medium temperature not greater than 350°C.
Design, installation, commissioning and operation management of collection systems.
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to
this document.
GB/T 150.1 Pressure vessels Part 1.General requirements
GB/T 4272 General rules for thermal insulation technology of equipment and pipelines
GB/T 12247 Steam trap classification
GB/T 12250 Steam Trap Terminology, Symbols, Structural Length
GB/T 12251 Steam trap test method
GB/T 22654 Technical specifications for steam traps
JB/T 11170 Condensate and exhaust steam closed recovery water pump device
3 Terms and definitions
The terms and definitions defined in GB/T 12247 and GB/T 12250 and the following apply to this document.
3.1
specificpressuredrop
The resistance loss along the unit length of the condensate pipeline.
3.2
The actual number of steam traps installed accounts for the percentage of the number of steam traps that should be installed in the condensate recovery system.
3.3
Among the steam traps randomly inspected, the number of qualified steam traps accounts for the percentage of the total number of randomly inspected steam traps.
3.4
The percentage of qualified condensate mass actually recovered to the condensate mass that can be recovered.
Note. The calculation period is generally one year.
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