Portable clean gas extinguisher

Abstract

The invention discloses a portable clean gas extinguisher, which is characterized in that a extinguishing agent storage tank is filled with 2-bromo-3,3,3-trifluoropropene and 1.1-2.2 MPa nitrogen; the storage tank is hermetically connected with an extinguisher head assembly, wherein the extinguisher head assembly consists of a handle, a pressure grip, a screw pin, a pressure rod, a sealing plate at the bottom of the pressure rod, a spring under the pressure rod, an extinguishing agent inlet pipe orifice, an outlet passage and an outlet pipe orifice; the extinguishing agent inlet pipe orifice is connected with the upper port of an extinguishing agent suction pipe, wherein the lower port of the extinguishing agent suction pipe extends to be close to the bottom of the extinguishing agent storage tank; one end of a spraying hose is connected with an extinguishing agent outlet pipe, while the other end of the spraying hose is connected with a sprayer; the sprayer is composed of a tapered outer cover and a cylindrical inner core; and a plurality of atomizing nozzles are arranged on the front end of the cylindrical inner core. In the invention, an adopted extinguishing agent is environment-friendly, the components of the extinguisher can be manually dismounted and mounted so as to be convenient to reuse; the sprayer has a good atomization effect, the spraying distance is long, the cover area is large and the extinguishing efficiency is high; and the portable clean gas extinguisher is applicable to fire protection of precision instruments and equipment, library and archives, and vessel or aircraft cabins.

Description

technical field [0001] The invention belongs to the technical field of gas fire extinguishers, in particular to a portable clean gas fire extinguisher equipped with a cylindrical atomizing core nozzle suitable for 2-bromo-3,3,3-trifluoropropene (BTP) fire extinguishing agent. Background technique [0002] Portable gas fire extinguishers are widely used in equipment rooms, computer rooms, books and archives because of their advantages of convenient movement, simple operation, high fire extinguishing efficiency, non-conductive fire extinguishing agent, no residue after fire extinguishing, and no pollution to equipment on the fire extinguishing site. Fire protection in various places such as rooms, aircraft or ship cabins. Commonly used portable gas fire extinguishers mainly include Halon 1301 fire extinguisher, Halon 1211 fire extinguisher and carbon dioxide fire extinguisher. Although Halon 1301 and 1211 are highly effective in extinguishing fires, the fire extinguishing agen...

AI Technical Summary

Problems solved by technology

Commonly used portable gas fire extinguishers mainly include Halon 1301 fire extinguisher, Halon 1211 fire extinguisher and carbon dioxide fire extinguisher. Although Halon 1301 and 1211 are highly effective in extinguishing fires, the fire extinguishing agent used contains chlorine or bromine, etc., which can damage the ozone layer of the atmosphere. element, has been banned

Although carbon dioxide fire extinguishers are cheap and easy to obtain raw materials, they have a suffocating effect on people because of the high volume concentration of carbon dioxide fire extinguishing agent; while the temperature of liquefied carbon dioxide drops sharply when sprayed, it will cause damage to precision instruments

The existing hexafluoropropane fire extinguisher is not only expensive, but its fire extinguishing efficiency is lower than that of Halon 1301, and a large amount of harmful gas hydrogen fluoride will be produced when hexafluoropropane is extinguished, which will cause damage to precision instruments and equipment and endanger life

In addition, because the fire extinguishing agents used in these existing portable fire extinguishers, such as halon, carbon dioxide and hexafluoropropane, are all low-boiling, highly volatile gases, they are stored in the fire extinguisher after being pressurized and liquefied, and the valve is opened during use. Reduced, the fire extinguishing agent can quickly vaporize and diffuse into the fire extinguishing space quickly, so the corresponding fire extinguisher nozzle only needs to have simple holes and does not need special structure, but the nozzle of this kind of fire extinguisher is liquid at room temperature and has a high boiling point. , Fire extinguishing agents with poor volatility are not suitable

In addition, the fire extinguishing agent used in these commonly used fire extinguishers is a pressurized liquefied gas. After the fire extinguishing agent is sprayed, it must be sent to the fire manufacturer to refill through professional pressurized equipment. It cannot be directly refilled on site, and it is not easy to reuse.

[0003] Although 2-bromo-3,3,3-trifluoropropene (marked as BTP) is a clean gas fire extinguishing agent with high fire extinguishing efficiency (its fire extinguishing volume concentration is only 2.6%), but because it is Liquid (boiling point: 34°C) has poor volatility. When using a conventional portable gas fire extinguisher, a liquid column is sprayed out, and the fire extinguishing agent cannot be vaporized quickly, so that the fire extinguishing efficiency of the fire extinguishing agent cannot be fully exerted, so it is not suitable for Conventional Portable Gas Fire Extinguishers

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