减少煤矿井下电动机烧毁的途径

• 作 者: 陈明镖
• 机 构: 西安矿业学院,
• 出 处: 陕西煤炭技术
• 发表日期: 1987年01期
• 关键词: 电动机功率 煤矿井 吨煤成本 额定电流 轻载 起动时间 电动机损坏 断相 额定转速 绝缘电阻

据部分矿封的初步调查,井下电动机烧毁的数量是很惊人的。通常一个年产100万吨至150万吨的矿井,平均每月烧毁电动机15台,全年约180台左右。烧坏的电动机单台功率小则几瓩,大到七、八十瓩,多数为二十至四十瓩。若以平均每台二十瓩计算,烧毁电动机功率总和每月为三百瓩,每年为三千六百瓩,相当每年将井下电动机全部更新一遍(大修或换装新电动机),这是十分可观的。电动机大量烧毁,必然会因更换电动机而影响生产,降低生产率,并且会耗费资金降低经济效益,提高吨煤成本。为此有必要找出电动机大量烧毁的主要原因,分析其机理,以便针对性地采取有效措施,减少电动

According to the preliminary investigation of some mineral seals, the number of downhole motor burned is very alarming. Usually an annual output of 1 million tons to 1.5 million tons of mines, the average burn motor 15 per month, about 180 throughout the year. Burn a single motor power is small, a few, up to seven, eighty 瓩, the majority of twenty to forty 瓩. If we average 20 kilowatts each, the total power of the motor burnt down to 300 kilowatts per month, which is 3 600 kilowatt-hours a year, which will make the underground electric motor completely renewed every year (overhauling or changing new motor), which is very impressive of. A large number of motor burned, will inevitably affect the production due to the replacement of the motor, reduce productivity, and will spend money to reduce economic efficiency and increase the cost of tons of coal. Therefore, it is necessary to find out the main reasons for the large number of motor burned, analyze its mechanism, in order to take effective measures to reduce the electric