Temperature-sensitive anti-evaporation water-based fire extinguishing agent

Abstract

The invention discloses a temperature-sensitive anti-evaporation water-based fire extinguishing agent for mountain fire. The temperature-sensitive anti-evaporation water-based fire extinguishing agentcomprises the following components in parts by weight: 40-98 parts of ammonium salt; 0.5-6 parts of a temperature-sensitive thickening agent; 0-23 parts of a foaming agent; and 500-1400 parts of water. The water-based fire extinguishing agent is more suitable for an aviation fire extinguishing device to extinguish electric transmission line forest fire, after a helicopter extinguishes fire and sprays a fire extinguishing agent, the evaporation amount of the fire extinguishing agent is small, the fire extinguishing agent rapidly diffuses to achieve fire extinguishing when reaching a fire scene, and therefore, the temperature-sensitive anti-evaporation water-based fire extinguishing agent is high in fire extinguishing capacity, fast in fire extinguishing speed, high in efficiency, high in precision and high in utilization rate, and further guarantees the safe and stable operation of a power transmission line.

Description

technical field [0001] The invention belongs to the field of fire extinguishing agents, in particular to a water-based fire extinguishing agent. Background technique [0002] Transmission line mountain fire is a kind of mountain fire disaster accident with strong suddenness, great difficulty in quick rescue, and high time requirement, which poses a great threat and destructive to the operation of transmission line. In order to quickly extinguish mountain fires on power transmission lines, it is necessary to comprehensively select fire extinguishing agents in accordance with the existing fire prevention technology, the nature of the fire substance, the nature of the fire extinguishing agent, and whether it is convenient to use. Several types of fire extinguishing agents commonly used at present include water, foam fire extinguishing agent, carbon dioxide fire extinguishing agent, dry powder fire extinguishing agent and water system fire extinguishing agent. [0003] Water is...

AI Technical Summary

Problems solved by technology

[0003] Water is a natural fire extinguishing agent, but its fire extinguishing efficiency is poor. When dealing with wildfires on transmission lines where water resources are scarce in the wild, a large amount of water is required, and the application places are limited.

Carbon dioxide fire extinguishing agent and dry powder fire extinguishing agent are easy to spread in the field under the influence of wind, and the action distance is very small, so they are not suitable for fire extinguishing on transmission lines

Foam fire extinguishing agent is mainly used in oil fires, and its flow ability is poor when it is sprayed on wild vegetation, and its coverage is small

Existing mountain fire extinguishing agents are mainly based on the function of "isolation of oxygen-cooling-anti-resurgence", without the function of anti-evaporation. The evaporation of the fire extinguishing agent is relatively large when it is close to the fire site. When spraying above high altitudes, since the viscosity of the mountain fire extinguishing water agent is less than 10 centipoise, the force between molecules is weak, and the fire extinguishing water agent is affected by air resistance to form a velocity gradient. The volume of the water body is diffused by more than 100 times, and the contact area is large. effect, the evaporation rate reaches 60-80%, and the fire extinguishing efficiency is low

Moreover, due to the large degree of diffusion of the fire extinguishing water agent, it will drift when affected by the wind, and the accuracy of fire extinguishing is low.

If the fire extinguishing agent does not spread during the falling process, the evaporation in the process of falling in the air will be reduced, but it will inevitably lead to a reduction in the coverage area of ​​the fire extinguishing agent, that is, a large amount of fire extinguishing agent covers a small area, and the use of fire extinguishing agent rate drop

At the same time, due to the amount or evaporation of the fire extinguishing agent, it is difficult for the fire extinguishing agent to fully cover the fire site when helicopters are used to extinguish the fire in most cases, resulting in a high temperature re-ignition point in the fire site, or the smoldering development of the humus layer on the surface spread into conflagration

Images