Pre-mixing type high-expansion foam generation device

Abstract

The invention provides a pre-mixing type high-expansion foam generation device. The device comprises a high-expansion foam generator, a high-expansion foam pre-mixing pressure tank and a compression gas bottle; pre-mixing foam liquid is contained in the high-expansion foam pre-mixing pressure tank, and enters the high-expansion foam generator through high-pressure gas in the compression gas bottle, and high-expansion foam is generated; and under the condition that the exterior does not have water and electricity, a large amount of high-expansion foam can be rapidly and efficiently generated, and released to a liquefied natural gas leakage area, and liquefied natural gas diffusion and fire danger are effectively controlled.

Description

technical field [0001] The invention relates to the technical field of fire protection utilization, in particular to a premixed high-expansion foam generating device. Background technique [0002] In recent years, with the rapid development of the liquefied natural gas industry, fire accidents caused by the leakage and diffusion of liquefied natural gas have also occurred frequently. At present, there are two main control measures for LNG leakage and diffusion fire accidents: (1) Use fire water to dilute the concentration of LNG vapor and control the surrounding ignition sources; (2) Use fixed high-expansion foam generating devices, such as LNG Receiving station tank area, etc. These two measures all have very big dependence on (fire-fighting) water, especially adopt fire-fighting water, will consume a large amount of water resources, and existing high-expansion foam generating device needs to have the water with certain pressure to produce high-expansion foam , it will be...

AI Technical Summary

Problems solved by technology

[0004] At present, domestic liquefied natural gas filling stations generally use dry powder systems as fire emergency means, which cannot provide effective protection in the event of liquefied natural gas leakage; while in stations such as liquefied natural gas receiving stations, fixed high-expansion foam generation systems are generally used , higher requirements for water and electric control

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