Mixed CO2 fire extinguisher

A carbon dioxide and fire extinguisher technology, applied in fire prevention equipment and other directions, can solve the problems of high price, high price, low fire extinguishing ability, etc., and achieve the effect of reducing costs and wide application prospects.

Inactive Publication Date: 2002-09-04
公安部上海消防科学研究所
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  • Abstract
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AI Technical Summary

Problems solved by technology

The fire extinguishing agent carbon dioxide is cheap, but its fire extinguishing ability is low, and it can only extinguish class B fires (that is, oil fires) but not class A fires (that is, solid materials catch fire)
Gas fire extinguishers that can extinguish Class A fires include Halon 1211 fire extinguishers produced in the United States, which are more expensive
At present, there are gas fire extinguishers that use hexafluoropropane (HFC-236fa) and heptafluoropropane (HFC-227ea) instead of Halon 1211 fire extinguishing agent to extinguish Class A fires, but their prices are more expensive than Halon 1211 fire extinguishers

Method used

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  • Mixed CO2 fire extinguisher
  • Mixed CO2 fire extinguisher

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Additive, hexafluoropropane, %

[0018] It is determined by experiments that the extinguishing performance of Class A fire in Example 1 is relatively poor, but the cost is low. Embodiment two and embodiment three are made into MT5 and MT7 type fire extinguisher specifications, which can put out Class A fires of 1A level and Class B fires of 5B and 6B levels, which are equivalent to the performance of MY4 type Halon 1211 fire extinguisher, but its cost is lower than Or close to a Halon 1211 fire extinguisher. The performance of extinguishing Class A fire in Example 4 is relatively strong, but the cost is higher than that of the Halon 1211 fire extinguisher.

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PUM

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Abstract

The composition of a mixed CO2 fire-extinguishing agent is formed from (wt%) 1-49% of hexafluoropropane which can be used as an additive for chemical fire-extinguishing and the rest being CO2 which can be used as main agent for physical fire-extinguishing. This invention can greatly reduce the cost of fire extinguisher, and possesses extensive application.

Description

Technical field: [0001] The invention relates to a carbon dioxide fire extinguisher, in particular to a hybrid carbon dioxide fire extinguisher. Background technique: [0002] As we all know, the earliest and widely used gas fire extinguisher is a carbon dioxide fire extinguisher, which can isolate the air from the fire source and realize fire extinguishing. Its fire extinguishing agent carbon dioxide is cheap, but its fire extinguishing ability is relatively low, and it can only extinguish class B fires (that is, oils are on fire) but cannot extinguish class A fires (that is, solid materials are on fire). Gas fire extinguishers that can extinguish Class A fires include Halon 1211 fire extinguishers produced in the United States, which are more expensive. At present, there are gas fire extinguishers that use hexafluoropropane (HFC-236fa) and heptafluoropropane (HFC-227ea) instead of Halon 1211 fire extinguishing agent to extinguish Class A fires, but their prices are more e...

Claims

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Application Information

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IPC IPC(8): A62D1/00
Inventor 朱青赵伦元诸容邵国平陈忠信
Owner 公安部上海消防科学研究所
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