Abstract
Cable channel fire is an important factor affecting the safe operation and maintenance of power cables. This paper summarizes the current research situation of fire-extinguishing technology, analyzes the fire-extinguishing technology suitable for cable channel, and proposes to use S-type aerosol fire-extinguishing technology to extinguish the fire of cable channel..
Highlights
Since 1960, 62 major fire accidents have occurred in power plants, substations and power supply tunnels in China due to the spread of cable fire, which has destroyed 32km of cable and many electrical installations, resulting in a direct loss of tens of millions of yuan[1]
According to the classification and statistics of cable fire accident causes, we know that the external causes account for a large proportion, among which the fire caused by the burning of combustible materials and buildings around the cable is more common[7,8], as Table.1 shows
China's "Fire Law" clearly stipulates: "The state encourages and supports scientific research and technological innovation in fire control, and promotes the use of advanced fire control and emergency rescue technology and equipment."[13] To sum up, s-type aerosol fire extinguishing technology is especially suitable for cable channel fire extinguishing due to its characteristics of university and cleaning
Summary
Since 1960, 62 major fire accidents have occurred in power plants, substations and power supply tunnels in China due to the spread of cable fire, which has destroyed 32km of cable and many electrical installations, resulting in a direct loss of tens of millions of yuan[1]. In the above 62 cable fire accidents, there were 15 fire delays due to cable fault, accounting for 24.2% of the total number of times, among which 7 were caused by declining insulation and aging. PVC cable fire after the precipitation of hydrogen chloride gas, the need to wear a gas mask firefighters to enter, often delayed the timely fire.(5) Lay out cable sites in multiple layers such as the main building and tunnel of the power generation factory. After the cable catches fire, it will spread to adjacent cables, which will increase the burning intensity and speed up the burning along the cable line
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