Fire safety apparatus of high-pressure gas fuel tank for vehicle

Abstract

The present invention features a fire safety apparatus for a high-pressure gas fuel tank of a vehicle, comprising a pressure relief device that is disposed between a tank connection channel and an outside connection channel in a tank valve of a high-pressure fuel tank and that connects the tank connection channel with the outside connection channel when the tank valve increases in temperature over a predetermined level in a fire, and a suitable intumescent that is hydrate disposed with the high-pressure fuel tank to increase in volume and absorbs heat, with the water from evaporation in a fire, and delay the flames spreading over the high-pressure fuel tank by producing a heat insulation barrier after the water evaporates. According to preferred embodiments of the present invention, it is possible to prevent a high-pressure fuel tank from exploding due to a fire and to preclude secondary damage due to the high-pressure fuel tank, by delaying the flames spreading over the high-pressure fuel tank with a suitable intumescent that prevents the high-pressure fuel tank from being damaged and exploded by the flames, preferably before a pressure relief device operates in a vehicle on fire.

Dependencies are inferred from the claim text.