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GB 32275-2015: Technical specifications of pipeline safety apparatus for fire dampers and explosion protection in textile industry
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Technical specifications of pipeline safety apparatus for fire dampers and explosion protection in textile industry
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GB 32275-2015
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Standard similar to GB 32275-2015 GB 17440 GB 17440 GB/T 17919 GB 32276 Basic data | Standard ID | GB 32275-2015 (GB32275-2015) | | Description (Translated English) | Technical specifications of pipeline safety apparatus for fire dampers and explosion protection in textile industry | | Sector / Industry | National Standard | | Classification of Chinese Standard | C67 | | Classification of International Standard | 13.230 | | Word Count Estimation | 11,168 | | Date of Issue | 2015-12-10 | | Date of Implementation | 2017-01-01 | | Quoted Standard | GB 12476.1; GB 12476.2; GB 15577; GB/T 15604; GB 50058; GB 50565 | | Regulation (derived from) | National Standard Announcement 2015 No.38 | | 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 types of safety devices for fire-proof and explosion-proof piping in the textile industry, the use of ports, selection principles, installation and maintenance. This standard is applicable to the design, installation, use and maintenance of safety devices for fire-proof and explosion-proof pipes in the textile industry. | GB 32275-2015: Technical specifications of pipeline safety apparatus for fire dampers and explosion protection in textile industry
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Technical specifications of pipeline safety apparatus for fire dampers and explosion protection in textile industry
ICS 13.230
C67
National Standards of People's Republic of China
Textile industry pipeline fire and explosion safety devices
specifications
Published 2015-12-10
2017-01-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China issued
Table of Contents
Introduction Ⅲ
1 Scope 1
2 Normative References 1
Terms and definitions 1 3
General provisions 2 4
5 type fire and explosion safety device conduit 2
6 range 3
7 3 selection principles
The sensor circuit 3 and 8
9 explosion suppression transmitter 3
10 automatic sprinkler 3
11 Installation 4
12 use and maintenance 4
Foreword
In addition to all the technical criteria present in Chapter 1, Chapter 2, and Chapter 3 7.2,7.3,9.3 mandatory content.
This standard was drafted in accordance with rules GB/T 1.1-2009 given.
This standard was proposed by the State Administration of Production Safety Supervision and Management.
This standard by the National Safe Production Standardization Technical Committee (SAC/TC288).
This standard was drafted. Wuhan Textile University, Wuhan Steel Group Environmental Safety Institute, Jiangsu Buffett filter Co., Hai Yi Jin
Air Equipment Co., Ltd.
The main drafters. Shi Jianzhong, Xu Guoping, Wangxiu Qing, Wang Aimin, Li Yu, Cai Sheng, Ding Jingzhi, Wang Zhenggang, Chen Jun, Wu Xiaoyu,
There Bang music.
Textile industry pipeline fire and explosion safety devices
specifications
1 Scope
This standard specifies the type of textile fire and explosion safety device conduit, range, selection principle, installation and maintenance.
This standard applies to the textile industry pipeline fire and explosion safety device design, installation, use and maintenance.
2 Normative references
The following documents for the application of this document is essential. For dated references, only applies to the version dated paper
Pieces. For undated references, the latest edition (including any amendments) applies to this document.
GB 12476.1 combustible dust electrical equipment - Part 1. General requirements (IEC 61241-0.2004, MOD)
GB 12476.2 combustible dust electrical equipment Part 2. Selection and installation (IEC 61241-14.2004, IDT)
GB 15577 Dust explosion safety regulations
GB/T 15604 dust explosion term
GB 50058 explosive atmospheres design specifications of electrical installations
GB 50565 Textile fire protection engineering design
3 Terms and Definitions
GB/T 15604 and as defined in the following terms and definitions apply to this document.
3.1
Dust explosion hazard dustexplosionhazardousarea
The presence of combustible dust, combustion gases and place ignition sources.
[GB/T 15604-2008, definitions 3.13]
3.2
Textile Industry textileindustry
Natural or natural fibers, synthetic polymer compound as raw material, chemical and physical methods to obtain fibers, and these
Fiber production of various products of the industrial chain. Including. textiles, textile and garment industry, chemical fiber manufacturing, chemical fiber raw materials manufacturing industry.
3.3
Pipeline fire and explosion safety devices pipelinesafetyapparatusoffiredampersandexplosionprotection
Installed in the ventilation and dust removal, in the pneumatic conveying conduit, means for preventing explosion or explosion, fire spread.
3.4
Valve arrester firearrestingvalve
When an explosion or fire, safety devices to prevent the passage of flame.
3.5
Photosensor opticalelectronicsensor
Explosion for sensing a signal emitted when the flame of fire, and passes the information to other detection means. Including infrared, purple rumor
Sensors and the like.
3.6
Pressure wave sensor pressuresensor
For sensing the pressure and shock wave impulse signal when the explosion occurred, and passes information to other detection means.
3.7
Chemical isolation chemicalisolation
When an explosion or fire, explosion suppression agent is released by an explosion or fire zone isolation areas and other areas, to prevent explosion or fire
diffusion.
3.8
Mechanical isolation mechanicalisolation
When a fire or explosion, through the valve explosion or fire areas and other regions zonal isolation, prevent the spread of fire or explosion.
3.9
Explosion suppression transmitter explosionsuppressor
When an explosion or fire, explosion suppression agent transmitting means.
3.10
Automatic sprinkler automaticsprinkler
When a fire or explosion, with automatic sprinkler nozzle.
4 General Provisions
4.1 pipeline fire and explosion safety device used in the textile industry, ventilation and dust removal dust explosion hazardous areas of zones 20, 21, pneumatic conveying
And other pipeline.
4.2 Role pipeline fire and explosion safety devices are.
a) preventing flame spread of fire through the conduit when the dust explosion hazard cause dust explosion;
b) When a region of explosion, through the isolation, and other measures to prevent flame spread and prevent multiple explosions;
c) prevent the spread of fire in different regions, in place of GB 50565 damper function.
Type 5 pipeline fire and explosion safety devices
This standard including but not listed in Table 1 several types of safety devices.
Table pipeline type fire and explosion safety device 1
Type constitute Remarks
Mechanical isolation valve
A valve body, valve plate, sensors, power (standby power
Pool), the control system
Comprising a collapsible valve, gate valve, the valve arrester. sensor
Pressure wave sensor comprises a photosensor
Chemical isolation valve
A transmitter, a sensor, a power supply (battery backup), control
Braking system
Wave sensor comprises a pressure sensor, a photosensor
Sensor
Extinguishing fire detection system
Automatic sprinkler, sensors, power source (battery backup),
Control System
Sensor including ultraviolet, infrared and other photoelectric sensor
6 range
Following locations pipe should be installed fire and explosion safety devices.
a) into the dust chamber, the duct;
b) through the pipeline different dust explosion hazardous areas;
c) carding plant pneumatic conveyor;
d) through the dust pipe different fire district in dust explosion hazardous areas.
7 selection principles
7.1 into and out of the pipe should dust chamber isolation valve with mechanical or chemical isolation valve. The maximum side length of pipe or equivalent diameter not
Should be greater than 300mm mechanical isolation valve, valve blocking time should be less than 80ms; equivalent pipe length or a maximum diameter of edge
300mm should be used to isolate chemical safety valve.
Dust explosion hazard across different regions within the duct should be 7.2 textile industrial plants mechanical isolation valve or extinguish fire detection system.
7.3 textile industry pneumatic conveying system piping extinguish fire detection system should be adopted.
8 and the sensor circuit
8.1 sensing control response time should be less than 20ms.
8.2 pipeline fire and explosion safety sensor means may employ a pressure wave sensor, an ultraviolet sensor, an infrared sensor 3 in any kinds of sensors
One; triple sensor may also be employed, when the two sensors generating a response, the security device is activated.
8.3 mating electrical circuits and products should meet GB 12476.1 and GB 12476.2 requirements.
8.4 using electric brake safety device should have a backup power supply when the external power supply failure also the brake.
8.5 sensors should fire alarm system, security control interlock system; a plurality of sensors may control a safety device.
9 explosion suppression transmitter
9.1 explosion suppression. Specification.
a) Spray lag time. less than 20ms;
b) Fogging time. 3m2 area of less than 150ms;
c) duration of the available matte. greater than 500ms;
d) spray rate. more than 80%.
9.2 explosion suppression transmitter different capacities should be selected according to the pipe diameter.
9.3 explosion suppression transmitter should be at 45 ° angle bracket mounted on the pipe, and the best results explosion suppression agent is sprayed into the flame.
10 automatic sprinkler
10.1 sprinkler technical parameters.
a) Spray lag time. less than 20ms;
b) Fogging time. 3m2 area of less than 150ms.
10.2 extinguish fire detection system should be wet sprinkler. The fire protection sprinkler system is a wet direct therewith nearest
Connection.
10.3 The installation location may drop below freezing ambient temperatures, sprinkler use an electric heating mode to prevent freezing of water or showerhead
freeze.
10.4 sprinkler should be installed on a horizontal pipe, downstream of the sensor should be installed, the pipe should be installed in the top head.
11 Installation
11.1 should be carefully checked before installation models, specifications meet the design requirements, factory inspection certificate, certificate, manual, and in strict accordance with established
Preparation of installation instructions.
11.2 mechanical isolation valve should be installed on a horizontal pipe, the mechanical braking device to be checked is normal prior to installation.
11.3 directional safety device, and the flow conduit should be noted that the arrows in the air flow in the same direction when installed.
11.4 security device with a sensor which sensor should be installed near high dust explosion risk areas, safety devices and sensors should be maintained
More than 5m from the hold.
11.5 safety device should be mounted on the pipe to facilitate checking operation, and should separate stand alone.
11.6 the connection cable between the devices should meet GB 12476.1, GB 12476.2 and GB 50058 is required.
11.7 If the ambient temperature is too high, exceeding the allowable temperature and electrical cables shall take the necessary protective measures.
11.8 mechanical isolation valve flange connection should, at a pad connection should not use animal or plant fibers, and applying jumper wires, electrically
Resistance is not greater than 0.03Ω.
Sprinkler fire detection and extinguishing transmitter system 11.9 chemical isolation valve may be directly mounted on the pipe, the insertion port should be soldered and the solder
It should be finished sealing test.
11.10 installation design documents should be prescribed for debugging, each security device debugging of not less than three times, and make debug logging.
12 use and maintenance
12.1 enterprises should arrange for someone to manage and maintain safety equipment, management personnel should be subject to pre-job safety training and obtain professional certification.
12.2 should regularly check whether the failure of a safety device, such as the failure of timely maintenance, and make a record.
Maintenance 12.3 proof safety device should be used tool, each metal member not hitting the safety device.
12.4 GB hot work should be related to implementation of the provisions in 15577.
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