By the portions given in this documentby carrying out the research on the mechanical properties and fire resistanceofaerogel thermal insulation materials by the addition of three aluminum oxide and two aluminum content, the amount ofnano three oxidized two aluminum can be obtained at 15%. The mechanical properties and high temperature stabilityofthe material are the best. Through the 4H test of the fire resistance limit, it can be used for the fire fighting improvement of the valve hall of converter station.
The plugging of the valve hall of the UHV converter station is an important barrier to prevent the fire from spreading to the valve hall, and the heating curve of hydrocarbon fire should be adopted for defense. The fire resistance test results of the rock wool composite aluminum silicate plate under the hydrocarbon fire heating curve show that the plug has good heat insulation and complete performance and meets the three-hour fire resistance requirements. It is a fire protection structure for the valve side casing of the converter station. The retrofit provides a solution. The study of the microscopic mechanism of the disassembled plugging material shows that the phase change reaction of structural rock wool under hydrocarbon fire is the main reason for its sintering.
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