Spraying agent type automatic fire extinguishing device for vehicle

Abstract

The invention relates to a spraying agent type automatic fire extinguishing device for a vehicle, which is suitable for an engine room of a minicar. The spraying agent type automatic fire extinguishing device comprises a cylinder body, a superfine dry powder spraying assembly and a spraying agent box assembly and is vertically or horizontally arranged in the engine room of the minicar through a hoop; the superfine dry powder spraying assembly is arranged as a nozzle assembly connected with an upper opening of the cylinder body during vertical installation; a lower cover is connected with the spraying agent box assembly and seals a lower opening of the cylinder body; a compound type superfine dry powder extinguishing agent with mean grain size less than or equal to 5 micrometers is filled into a cavity of the cylinder body; the nozzle assembly comprises a protecting hood, a taper pipe nozzle nipple, an aluminum film and a sealing gasket which are connected; the spraying agent box assembly comprises a spraying agent box body, a protective film and a nozzle; the side wall of the spraying agent box body is provided with a through hole and the protective film; the lower cover is provided with a through hole for guiding an electric igniter and is connected with a control circuit; the side wall of the cylinder body which is horizontally arranged is provided with the through hole, and the cylinder body is also used as the superfine dry powder spraying assembly. The spraying agent type automatic fire extinguishing device has multiple starting ways and extinguishing time less than 3 seconds, is suitable for various natural environments with the minicar and can stably work.

Description

technical field [0001] The invention belongs to the technical field of fire extinguishing, and in particular relates to a vehicle hairspray type automatic fire extinguishing device for engine compartments of cars, jeeps, mini cars, light passenger cars, light trucks and small special-purpose cars. Background technique [0002] The engine room of small cars such as cars, the space is narrow (approximately no more than 2m 3 ), the oil circuit and electric circuit are concentrated, and it is easy to cause fire, and it is easy to spread quickly, and even cause the fuel tank to explode, which is easy to cause the vehicle to spontaneously ignite, and even cause casualties. According to statistics, 80% of automobile spontaneous combustion is ignited from the engine compartment, and fire extinguishing in this field is a worldwide problem. [0003] Existing fire extinguishing agents at home and abroad, such as water, water spray, foam, carbon dioxide, haloalkane (1211, 1301), smoked...

AI Technical Summary

Problems solved by technology

[0007] Carbon dioxide fire extinguishing systems usually use high-pressure or low-pressure storage. High-pressure systems require many bottle groups, occupy a large area of ​​storage bottles, and have strict requirements on ambient temperature, while low-pressure systems require external refrigeration equipment, which is more expensive; The maintenance requirements are strict, and the later maintenance costs are high, so it cannot be installed and used on small cars

High pressure increases the risk, and it is relatively easy to leak. It requires high material and maintenance level, so it is not suitable for installation and use on small cars.

[0009] The heptafluoropropane fire extinguishing system cracks hydrofluoric acid at the fire scene, which has a strong acid corrosion effect on the protective object and is a strong carcinogen. Moreover, the equipment is huge, the connection requires high precision, and it is easy to release pressure. It is not suitable for use in a bumpy environment.

[0016] The pressure storage device itself is easy to release pressure, and it is more difficult to ensure that the pressure is not released in the engine compartment of the vehicle that is often bumped back and forth and the temperature changes sharply. It is not reasonable to install the pressure storage device in the engine compartment

[0017] In summary, the prior art lacks a suitable vehicle-mounted fire extinguishing device suitable for small car engine compartments.

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