Insulating fire-extinguishing agent for high-temperature oil fire of transformer and application method thereof

Abstract

The invention discloses an insulating fire-extinguishing agent for a high-temperature oil fire of a transformer and an application method thereof. The insulating fire-extinguishing agent comprises thefollowing components: 0.5% to 10% by weight of a strong-expansion surface covering agent, 0.5 to 30% by weight of an anti-high-temperature evaporant, 5% to 50% by weight of an oil-in-water aqua anti-reburning agent, and 15 to 50% by weight of water. In use, the fire-extinguishing agent is mixed with water according to a mixing ratio of 0.1% to 6%; and water mist with droplet diameter in a range of 300-900 [mu]m and droplet flow rate of 1.0 to 3.0 L / m<2>.min is used for outdoor wind-resistant electriferous fire extinguishing. The insulating fire-extinguishing agent of the invention has the characteristics that the agent can effectively go deep into the high-temperature oil fire for fire extinguishing, is capable of rapidly spreading to cut off oxygen so as to realize fire extinguishing, and forms an anti-reburning barrier layer which realizes coating of transformer oil with fire-extinguishing water aqua; and the insulating fire-extinguishing agent effectively extinguishes the oil fireof the transformer and can prevent re-burning. When the insulating fire-extinguishing agent is to be used, an appropriate droplet diameter and an appropriate droplet flow rate are adopted so as to achieve wind-resistant and electriferous fire extinguishing of outdoor transformers and protect the transformers from fires.

Description

technical field [0001] The invention relates to the field of fire extinguishing for oil-immersed transformers, in particular to an insulating fire extinguishing agent for high-temperature oil fires in transformers and a use method thereof. Background technique [0002] Oil-immersed transformer fire has become a major disaster that threatens the safety of power supply. Ordinary oil-immersed power transformers contain nearly 100 tons of hydrocarbon mineral oil, and UHV converter transformers contain more than 100 tons of transformer oil. When a fault occurs, there is a risk of fire and explosion, and it may evolve into a catastrophic large-scale fire. For example, in June 2016, a fire broke out in a substation in the southern suburbs of Xi'an City, Shaanxi Province, causing multiple transformers to burn out, causing a load loss of 243,000 kilowatts and power outages to 86,500 households; A fire broke out due to a fault, causing multiple converters and the valve halls connect...

AI Technical Summary

Problems solved by technology

[0008] The invention provides an insulating fire extinguishing agent for transformer high-temperature oil fire and its application method to solve the technical problems that transformer high-temperature oil fire is difficult to extinguish and easy to recombust

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