GB 5135.7-2018 PDF English
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| GB 5135.7-2018 | English | 359 |
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Automatic sprinkler systems -- Part 7: Water flow indicators
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| GB 5135.7-2003 | English | 319 |
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GB 5135.7-2018: Automatic sprinkler systems -- Part 7: Water flow indicators---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB5135.7-2018
Automatic sprinkler systems--Part 7. Water flow indicators
ICS 13.220.10C84
National Standards of People's Republic of China
GB 5135.7-2018 replaces GB 5135.7-2003
Automatic sprinkler system
Part 7. Water flow indicator
Published on.2018-06-07
2019-01-01 implementation
State market supervision and administration
China National Standardization Administration issued
Content
Foreword III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Category 1
5 Model 2
6 Requirements 2
6.1 Appearance mark 2
6.2 Specifications 3
6.3 rated working pressure 3
6.4 Connection 3
6.5 blade 3
6.6 Sealing assembly 3
6.7 Signal output unit 3
6.8 Sensitivity 3
6.9 Work cycle 3
6.10 Delay function 3
6.11 Resistance to external impact 4
6.12 Water impact resistance 4
6.13 Hydraulic friction loss 4
6.14 Overload performance 4
6.15 Water pressure resistance 4
6.16 Mechanical strength 4
6.17 Withstand voltage capability and insulation resistance 4
6.18 Corrosion resistance 4
7 Test method 4
7.1 Visual inspection 4
7.2 Blade bending test 5
7.3 Environmental testing of non-metallic materials 5
7.4 Contact Contact Resistance Test 5
7.5 Sensitivity test 5
7.6 Working cycle test 6
7.7 Delay function test 6
7.8 External force impact test 7
7.9 Water Impact Test 7
7.10 Hydraulic friction test 7
7.11 Overload test 7
7.12 Water pressure test 7
7.13 Mechanical strength test 8
7.14 Withstand voltage and insulation resistance test 8
7.15 Corrosion test 9
8 Inspection rules 9
8.1 Inspection Classification and Project 9
8.2 Sampling method 9
8.3 Test procedure 10
8.4 Test result judgment 11
9 logo, instruction manual 11
9.1 Mark 11
9.2 Instruction Manual 11
10 Packaging, transportation and storage 11
10.1 Packing 11
10.2 Transportation 11
10.3 Storage 11
Foreword
Chapters 6 and 8 of this section are mandatory and the rest are recommended.
GB 5135 "Automatic Sprinkler System" is divided into the following sections.
--- Part 1. Sprinklers;
--- Part 2. Wet alarm valve, retarder, hydraulic alarm bell;
---Part 3. Water spray nozzles;
---Part 4. Dry alarm valve;
---Part 5. Rain alarm valve;
--- Part 6. General purpose valves;
--- Part 7. Water flow indicator;
--- Part 8. Accelerator;
---Part 9. Early suppression fast response (ESFR) nozzles;
---Part 10. Pressure switch;
--- Part 11. Grooved pipe joints;
--- Part 12. Expanding the coverage area sprinklers;
---Part 13. Water curtain nozzles;
---Part 14. Preaction devices;
---Part 15. Household sprinklers;
---Part 16. Fire sprinkler hose;
---Part 17. Pressure reducing valve;
---Part 18. Fire-fighting pipe hangers;
---Part 19. Plastic pipes and fittings;
---Part 20. Coating steel pipes;
--- Part 21. End water test device;
--- Part 22. Special application nozzles.
This part is part 7 of GB 5135.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB 5135.7-2003 "Automatic sprinkler system Part 7. Water flow indicator". And GB 5135.7-2003
In contrast to the editorial changes, the main technical changes are as follows.
--- Increased the classification and modelling of water flow indicators (see Chapter 4, Chapter 5);
--- Increased the connection method requirements (see 6.4);
--- Increased the relevant requirements of the blade (see 6.5);
--- Increased requirements for sealing components (see 6.6);
--- Increased signal output component requirements (see 6.7);
--- Increased reset time requirements for sensitivity requirements (see 6.8);
--- Increased the mechanical strength requirements of the saddle-type water flow indicator (see 6.16).
This part is proposed and managed by the Emergency Management Department of the People's Republic of China.
This section drafted by. Ministry of Public Security Tianjin Fire Research Institute, Shanghai Jindun Fire Safety Equipment Co., Ltd., Xi'an Shengsaier Electronics Co., Ltd.
Company, Hydraulic Fire Technology Co., Ltd.
The main drafters of this section. Luo Zongjun, Bai Diantao, Li Ximin, Tian Liwei, Li Yi, Liu Lianxi, Yang Zhenming, Zhang Junna, Wang Da, Zhang Zhaoxian,
Zhang Xiongfei, Wang Qiuliang.
The previous versions of the standards replaced by this section are.
---GB 5135.7-2003.
Automatic sprinkler system
Part 7. Water flow indicator
1 Scope
This part of GB 5135 specifies the classification, model, requirements, test methods, inspection rules, and water flow indicator of the sprinkler system.
Logo, instruction manual and packaging, transportation and storage.
This section applies to the vane type water flow indicator in the sprinkler system. Other types of water flow indicators can be used as reference.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 191 packaging storage and transportation icon
GB/T 1842 plastic polyethylene environmental stress cracking test method
GB 5135.11 Automatic sprinkler systems - Part 11. Grooved fittings
GB/T 7306 (all parts) 55° sealed pipe thread
GB/T 9112 Steel Pipe Flange Types and Parameters
GB/T 9969 General guidelines for the use of industrial products
GB/T 17241.6 integral cast iron flange
GB/T 25208 Fixed fire extinguishing system product environmental test method
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
An alarm device used in an automatic sprinkler system to convert a water flow signal into an electrical signal.
3.2
The time from the start of the transmission component action caused by the flow of water to the time when the alarm signal is issued.
3.3
3.4
4 classification
4.1 The flow indicator can be divided into.
a) time delay type;
b) No delay type.
4.2 The water flow indicator can be divided into.
a) flanged;
b) grooved;
c) clip type;
d) threaded;
e) saddle type;
f) Other styles.
Table 1 Classification code
Classification method
structure type
Flanged F
Grooved G
Clip type D
Threaded L
Saddle type M
Other formula Q
Delay function delay type Y no delay type omitted
5 models
The model of the flow indicator is compiled as follows.
ZSJZ
Automatic sprinkler system water flow indicator
Nominal diameter in millimeters (mm)
Delay function code, see Table 1
Structural form code, see Table 1
Rated working pressure in MPa (MPa)
Enterprise custom code
Example 1.
ZSJZ100-YF-1.2 means the rated working pressure is 1.2MPa, with a time delay function, flanged structure, water flow indicator with a nominal diameter of 100mm.
Example 2.
ZSJZ100-M-1.2-A means that the company's custom code is A, the rated working pressure is 1.2MPa, no delay function, saddle structure, nominal diameter is 100mm
Water flow indicator.
6 requirements
6.1 Appearance sign
6.1.1 The surface of the water flow indicator shall be smooth and smooth, free of processing defects and scratches, and the coating shall be uniform.
6.1.2 The water flow indicator shall be provided with a durability sign on the outer surface. The contents of the mark shall be clear and in accordance with the provisions of 9.1.
6.2 Specifications
The water flow indicator nominal diameter series is 25mm, 32mm, 40mm, 50mm, 65mm, 80mm, 100mm, 125mm,
150mm,.200mm.
6.3 rated working pressure
The rated operating pressure of the flow indicator shall not be less than 1.2 MPa.
6.4 Connection
6.4.1 When the water flow indicator is flanged, the flange connection size, flange sealing surface type and size shall comply with GB/T 17241.6.
Or GB/T 9112.
6.4.2 When the water flow indicator adopts the groove connection method, the groove size shall comply with the provisions of GB 5135.11.
6.4.3 When the water flow indicator is screwed, the connecting thread shall comply with the provisions of GB/T 7306.
6.5 blade
6.5.1 When the water flow indicator uses metal material as the blade, the blade shall be made of a material whose corrosion resistance is not lower than that of austenitic stainless steel.
6.5.2 When the water flow indicator uses polyethylene as the blade, the blade shall be tested according to 7.3.2. After the test, the blade shall be free from cracking, etc.
damage.
6.5.3 Water flow indicator blade The blade bending test shall be carried out according to the method specified in 7.2. After the test, the blade shall be free of fracture, permanent deformation, etc.
damage.
6.6 Sealing assembly
The sealing assembly used for water pressure sealing shall be subjected to the warm water aging test according to the method specified in 7.3.1. After the test, the sample shall be free from bonding, cracking, etc.
For the phenomenon of normal work, the water pressure resistance of the water flow indicator shall comply with the provisions of 6.15.
6.7 Signal output unit
The signal output component shall be provided with a terminal or output lead, the terminal identification shall be obvious, and the lead shall be color-coded. According to the provisions of 7.4
The contact contact resistance test is performed by the method, and the contact contact resistance of the signal output part should not be greater than 0.1 Ω.
6.8 Sensitivity
The sensitivity test shall be carried out in accordance with the method specified in 7.5. The water flow indicator shall meet the following requirements.
a) When the flow rate is less than or equal to 15.0L/min, there should be no alarm signal output;
b) When the alarm signal is output, the flow rate should be greater than 15.0L/min and less than or equal to 37.5L/min;
c) When the flow rate is greater than or equal to 37.5L/min, the alarm signal shall be output, and the alarm signal shall not change with the increase of the flow rate;
d) The reset time ...
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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