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Fire extinguisher for preventing magnesium and magnesium-alloy from burning

A fire extinguishing device and magnesium alloy technology, applied in the field of fire extinguishing, can solve the problems of inability to burn flames of magnesium and magnesium alloys, and achieve the effects of simple structure, reasonable design, and convenient use

Inactive Publication Date: 2009-12-02
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, existing carbon dioxide fire extinguishers and foam fire extinguishers cannot be used to extinguish the burning flames of magnesium and magnesium alloys

Method used

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  • Fire extinguisher for preventing magnesium and magnesium-alloy from burning
  • Fire extinguisher for preventing magnesium and magnesium-alloy from burning
  • Fire extinguisher for preventing magnesium and magnesium-alloy from burning

Examples

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] The fire extinguishing method for preventing magnesium and magnesium alloys from burning in the present invention adopts the method of spraying flux with pressure flame-retardant gas to extinguish fire, wherein the mixing ratio of flux and flame-retardant gas is adjusted as required. The flame-retardant gas is carbon dioxide or argon, and the flux is the No. 2 flux used in aluminum and magnesium smelting in the non-ferrous metal smelting industry. Wherein, the volume ratio of the flame retardant gas to the No. 2 flux is 1-2.5:1, preferably 2:1.

[0020] Such as figure 1 As shown, the fire extinguishing device designed for preventing magnesium and magnesium alloys from burning according to the method of the present invention is made up of a spray gun 101, a powder supply device 102, a high-pressure gas bottle 104 and a communication pipe...

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Abstract

The invention discloses a fire extinguishing method and device for preventing magnesium and magnesium alloys from burning. The device consists of a spray gun, a powder supply device, a high-pressure gas bottle and a connecting pipeline; the front end of the spray gun is connected to the nozzle, and the back end is connected to the powder supply device through a pipeline; the powder supply device is connected to the high-pressure gas bottle through a three-way joint and a pressure pipeline The front part of the spray gun body is provided with an acceleration nozzle and an injection nozzle connected with the pressure side branch pipe, and a valve switch is provided on the pressure air pipe, which is connected with a high-pressure gas bottle through a three-way joint and a pressure pipeline; the rear part of the spray gun body is provided with There are air-operated valves to control the mixed gas. The invention can not only safely prevent the combustion of magnesium and magnesium alloys, but also effectively protect the melt during smelting of magnesium and magnesium alloys, and is especially suitable for preventing combustion of magnesium and magnesium alloys during smelting, casting and thermal processing.

Description

technical field [0001] The invention relates to a fire extinguishing technology, in particular to a fire extinguishing method and a device for preventing magnesium and magnesium alloys from burning during smelting, casting and thermal processing. Background technique [0002] Magnesium is the lowest density of all structural metals and alloys. Compared with other metal structural materials, magnesium and magnesium alloys have the advantages of high specific strength, good vibration damping, and strong electromagnetic shielding, and have broad application prospects in the fields of electronics, transportation, aerospace, aviation, and national defense military industries. At the same time, due to the relatively active chemical properties of magnesium, the solid of magnesium cannot be directly burned. It must be melted into a liquid at 650°C, and the gaseous magnesium will be generated locally in the liquid before it can be burned. The combustion of magnesium and magnesium all...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62C3/06A62C35/66A62C35/68
Inventor 潘复生彭建丁培道宋成猛
Owner CHONGQING UNIV
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