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我矿区的徐庄煤矿在东一采区有一条500米长的上山皮带运输机,倾角14.5°,输送能力450吨/时,运输机配用JB3—315S—4型电机,其参数分别为:n_e=1480转/分;l_e=170安;M_m/M_e=2.2;M_g/M_e=1.6;P_e=160千瓦;V_e=660伏;I_g/I_e=7。该矿自1979年底投产以来,该电机已经先后五次被烧毁,问题较为严重。为了对事故的原因弄清,在此,从对电机的运行状态入手作一简单分析。
In the mining area of Xuzhuang Coal Mine in East Mine, there is a 500m long belt conveyor uphill with a dip angle of 14.5 ° and a conveying capacity of 450t / h. The aircraft is equipped with JB3-315S-4 motor with the following parameters: n_e = 1480 r / min; l_e = 170 amp; M_m / M_e = 2.2; M_g / M_e = 1.6; P_e = 160 kW; V_e = 660 volts; I_g / I_e = 7. The mine has been put into operation since the end of 1979, the motor has been burned five times, the problem is more serious. In order to clarify the cause of the accident, here to start with the operation of the motor to make a simple analysis.