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Environment-friendly efficient fire extinguishing device and method

A fire extinguishing device and high-efficiency technology, applied in fire rescue, etc., can solve the problems of high production, installation and maintenance costs, secondary damage to the protection site, and the inability of the fire extinguishing system to quickly extinguish fires, suppress explosions, and cool down at the same time

Active Publication Date: 2021-05-18
应急管理部天津消防研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the fine water mist is safe and clean, due to its high-pressure power source, high-pressure transmission, high-pressure spraying (≥1MPa) and other deficiencies, as well as the extremely fine and easy-to-block nozzle holes of the fine water mist nozzle, the production, installation and maintenance costs are relatively high; The principle of suffocation fire extinguishing results in a long fire extinguishing time (≥1min), which cannot realize rapid fire extinguishing and cooling of the protected place; generally, the spraying time of fine water mist is long (≥3min), and long-term spraying is easy to form water stains, resulting in Secondary damage and electrical short circuit and other issues
[0005] To sum up, in view of the characteristics of multiple fire types and excessive fire loads in new protected places, the traditional single-medium fire extinguishing system cannot simultaneously meet multiple fire prevention and control requirements such as rapid fire extinguishing, explosion suppression, and cooling.

Method used

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  • Environment-friendly efficient fire extinguishing device and method
  • Environment-friendly efficient fire extinguishing device and method
  • Environment-friendly efficient fire extinguishing device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070]Offluorohexanone and nitrogen were selected.

[0071]The whole fluoride extinguisher has a boiling point of 49 ° C, and the mixed atomization fire extinguishing system can be preferred to achieve atomization of such a high-boiling gas fire extinguishing agent by two phase flows, and realizes the rapid and uniform distribution of fire extinguishing agents within the space.

[0072]According to the data in ISO 14520: 5, the fire extinguishing concentration of the perfluorohexanone extinguishing agent in the air is 4.5%, but with the decrease in oxygen concentration, its fire extinguishing concentration will be greatly reduced, and when the oxygen concentration is reduced to 18.5%, The fire extinguishing concentration is reduced to 1% (egFigure 7 Indicated).

[0073]Therefore, the mixed atomized fire extinguishing system is designed, and the test method of the 6.6.2b fire extinguishing test and the 6.6.3-free fire extinguishing test in GB 16670-2006 in GB 16670-2006 were tested in accorda...

Embodiment 2

[0076]Selection of septophipopropane and nitrogen.

[0077]According to the data in ISO 14520: 9, the fire extinguishing concentration of the sevofluoropropane extinguishing agent in the air is 6.6%, but as the oxygen concentration is lowered, the fire extinguishing concentration will be greatly reduced, and when the oxygen concentration is lowered to 18%, the fire extinguishing concentration is lowered. To 3.8% (such asFigure 8 Indicated).

[0078]Therefore, the mixed atomized fire extinguishing system is designed, and the test method of the 6.6.2b fire extinguishing test and the 6.6.3-free fire extinguishing test in GB 16670-2006 in GB 16670-2006 were tested in accordance with GB 25972-2010. And compared with a single media fire extinguishing system, as shown in the following table. In a mixed fire extinguishing agent, the amount of sevofluoropropane is reduced to less than 1 / 2 compared to the monumerous fire extinguishing agent, and the amount of nitrogen is reduced to less than 1 / 2, w...

Embodiment 3

[0082]Water and nitrogen.

[0083]Gas fire extinguishing agent: nitrogen, 7.5 MPa, 2 bottles × 90L.

[0084]Liquid fire extinguishing agent: perfluorohexanone or water, 10L.

[0085]Protection space: 100m3, size is 5m × 5m × 4m (length × width × height).

[0086]When the protection space is fire, start the fire extinguishing system, the spray is ≥1min, fire extinguishing time<30S, the start of the fire point temperature is below 100 ° C after the spray is at the end.

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Abstract

The invention provides an environment-friendly efficient fire extinguishing device and method. The fire extinguishing device comprises a gas cylinder, a collecting pipe, a liquid container, a gas pipeline, a liquid pipeline, a two-phase flow mixing atomization nozzle and a pressure reducing device. According to the environment-friendly efficient fire extinguishing device and method, the advantages of a multi-medium fire extinguishing agent are combined, the fire extinguishing capacity of the fire extinguishing agent can be remarkably improved, the device is used for closed or non-closed spaces of places with people to achieve rapid fire extinguishing, explosion suppression and cooling of protection spaces, and the device and method have great significance on fire prevention and control and emergency rescue of novel fire protection places such as municipal comprehensive pipe galleries, new energy storage systems and chemical production and storage places.

Description

Technical field[0001]The present invention belongs to the field of fire emergency rescue technology, in particular, involving an environmentally friendly high-efficiency fire extinguishing device and method.Background technique[0002]With the rapid development of my country's economy, the frequent production safety accident has always been a "old difficult" problem that plague my country's economic and social development. Municipal integrated gallery, new energy storage system and chemical production storage places have also brought new fire prevention and control issues. Since the fire is high in energy, the fire is extremely high, the fire is extremely fast, and the flammable is easy to explosive and high-temperature high pressure, toxic and harmful to corrosion, the fire type is more complicated (flowing fire, spray fire, deep fire), human fire is unable to intervene , Personal safety and social impact, currently applied to such protection places mainly for traditional single medi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62C31/00A62C31/28
CPCA62C31/005A62C31/28A62C99/0018A62C99/0027
Inventor 羡学磊赵泓喆刘连喜董海斌盛彦锋
Owner 应急管理部天津消防研究所
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