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一、煤矿井下架线电机车照明现状 随着煤矿的技术进步和发展,煤矿的主要生产环节之一——大巷电机车运输中,电机车的照明、声响告警、移动通讯等问题需要尽快得到解决。究其原因,其中电源问题是主要关键之一。煤矿架线电机车使用的电源为直流250V和550V两种,以250V的占多数。目前常用的变压方式是电阻降压,然后供照明声响、通讯等使用。由于煤矿井下环境条件差,运输巷道长,轨道连接不好,造成不同区域间电压变化范围很大(170V～320V间变化),致使电机车的照明、通讯、控制等所供电源时常处于不合要求的状态,引起故障率上升,损耗加大,各项技术指标达不到《煤矿安全规程》要求,存在一系列不安全因素。 多年来,电机车照明一直使用封闭型车灯,该种车灯灯泡参数为127V、100W,使用时两只灯泡串联接入250V架线电网,作前后灯使
First, the status quo of mine underground wire electric locomotive lighting With the technical progress and development of coal mines, one of the major production processes of coal mines - electric locomotive lighting, audible alarm, mobile communications and other issues need to be obtained as soon as possible solve. The reason, of which the power problem is one of the key. Coal mine wire electric locomotive power supply for the DC 250V and 550V two to 250V majority. The current commonly used voltage transformer is step-down resistance, and then for illumination, communication and other use. Due to the poor environmental conditions in coal mines, long tunnels and poor orbital connections, the voltage range varies greatly from 170V to 320V (varying from 170V to 320V), causing the power supply for the lighting, communication and control of the electric locomotive to be in undesirable condition State, causing the failure rate increased, loss increased, the technical indicators fail to “coal mine safety regulations” requirements, there are a series of insecurity. Over the years, the electric car lighting has been using a closed-type lights, the kind of light bulb parameters 127V, 100W, the use of two bulbs connected in series 250V overhead line for the front and rear lights