Testing device for combustion performance of stacked materials under constant-power heating effect of spherical metal hot particles

Abstract

The invention discloses a device for testing the combustion performance of accumulated materials under the heating action of constant power spherical metal hot particles, which includes a circuit for outputting power and real-time adjustment and feedback to the heat source power, a cubic metal mesh basket containing the accumulated materials, and a thermocouple for collecting temperature data and data collectors and fume hoods. The metal mesh basket is fixed on the bracket at a certain distance from the ground by iron hooks. The metal hot particles are located in the center of the metal mesh basket. Thermocouples for collecting temperature data are arranged symmetrically on both sides of the center of the hot particles in the horizontal direction. temperature data. A fume collecting hood is arranged above the support. By testing the combustion performance of combustible accumulation materials under the heating of spherical metal thermal particles with constant power, the ignition time of accumulation materials, the critical power for combustion behavior, and the speed of smoldering propagation can be obtained under the heating conditions of different sizes and different constant power metal thermal particles. Temperature, so as to provide reference for fire safety precautions of piled materials and new detection methods for fire safety of piled materials.

Description

technical field [0001] The invention relates to a fire safety test device for piled materials, in particular to a combustion performance test device for piled materials heated by constant power spherical metal hot particles. Background technique [0002] In the process of human life and industrial production, transportation, and storage, electric welding operations, fireworks, industrial grinding, and high-voltage wire collisions will generate high-temperature hot particles or thermal contact surfaces, forming heat sources. Compared with open flame ignition sources, hot particles are small in size and carry low energy, making them difficult to be detected. Once the hot particle heat source comes into contact with the piled material or is embedded inside the piled material, it may ignite the material and cause the material to burn, posing a huge threat to the safety of industrial production and warehouse storage. Testing the combustion performance of accumulated materials un...

AI Technical Summary

Problems solved by technology

At present, there is no fire hazard detection device and method for the situation where the surface or interior of materials burns under the action of local hot particle heating

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