LNG and CNG automobile fire-resistant explosion-suppression system

Abstract

The invention relates to an LNG and CNG automobile fire-resistant explosion-suppression system which comprises a gas extinguishing agent system, a signal acquisition and alarm system, and a control system, wherein the gas extinguishing agent system comprises a gas extinguishing agent storage bottle; an extinguishing agent container valve is mounted at the mouth of the gas extinguishing agent storage bottle and is connected with an extinguishing agent transmission pipeline with a pressure release valve thereon; a plurality of branch pipes are connected in parallel with the extinguishing agent transmission pipeline, and each branch pipe is connected with an electrodynamic selector valve and a spray nozzle in sequence; end parts of the branch pipes extend into an automobile cabin protected area. The system provided by the system has the advantages that prewarning and early inerting suppression are automatically conducted for LNG and CNG automobile fuel outleakage and fires, can give out prewarning in case methane concentration exceeds a pre-arranged value through real timely monitoring outleakage methane concentration and initial flash fire flame, can automatically open a gas suppression system in case the methane concentration of a sealed space exceeds 3 percent of a volume concentration or the flash fire flame appears, and therefore compensates a gap of the LNG and CNG automobile fire-resistant and explosion-proof devices.

Description

technical field [0001] The invention relates to an automatic fire extinguishing device for automobiles, in particular to a fire prevention and explosion suppression system for LNG and CNG automobiles, which is suitable for automobiles with LNG or CNG as power fuel. Background technique [0002] In modern society, cars have become a common tool in people's lives. With the continuous increase of car ownership, oil consumption has greatly increased, and environmental factors have attracted more and more attention. In recent years, many new energy forms of vehicles have emerged, including LNG (LNG Liquefied Natural Gas) and CNG (CNG Compressed Natural Gas,) Automobiles as power sources have also developed rapidly. [0003] During the use of the car, fuel leakage, spontaneous combustion or even explosion may occur due to the influence of various factors such as the condition of the car itself, environmental conditions, accidental collisions, etc., which may cause property loss ...

AI Technical Summary

Problems solved by technology

[0005] At present, the commonly used method for automobile fires is to force automobiles to be equipped with a special small-volume fire extinguisher for automobiles. This kind of fire extinguisher is small in size and easy to carry, but its actual fire-extinguishing ability is not significant. Automatic fire extinguishing system has not been reported yet

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