Belt conveying is a commonly used method in industrial production,but belt fires would occur from time to time,seriously threatening the safety of enterprise production.In order to study the combustion characteristics of the belt,the com-bustion process of the belt under different radiation intensities was tested using a cone calorimeter.The results show that:the time to ignition(TTI)of the belt was shortened by the gradual increase in the intensity of thermal radiation;the total heat re-lease(THR)and the peak heat release rate(PHRR)increased significantly with the increase in the intensity of thermal radia-tion;the THR value at 35 kW/m2 was 121.28 MJ/m2,which was 22.36 MJ/m2 higher than that at 25 kW/m2;the belt sam-ples under the experimental conditions of three different thermal radiation intensities were tested by conical calorimeter.The belt sample mass was significantly reduced,and the rate of mass reduction and the amount of smoke decreased with the re-duction of experimental radiant power.The fire spread index(FGI),fire performance index(FPI),exothermic index(THRI6min),and smoke generation rate(SP)analysis shows that the fire danger of the belt when burning is directly propor-tional to the intensity of thermal radiation,the greater the intensity of thermal radiation,the greater the energy of the belt specimen from the external ignition source when burning,and the greater the danger of catching fire.
万方数据
维普
