论文部分内容阅读
目前我国防爆型电气设备的技术性能比较落后,在煤矿井下为带式输送机选型配套的电控设备中,有相当一部分电气设备不符合《煤矿安全规程》的要求。如果将非防爆元件用于井下具有爆炸性混合气体较少的地方,则必须加强通风的安全措施才允许使用。因此用户不但增加了设备和投资,而且也增加了不安全的因素。这就极大地影响了带式输送机在煤矿井下的使用。
At present, the technical performance of our country’s explosion-proof electrical equipment is relatively backward. In the electrical control equipment for the selection of belt conveyors in the coal mine, a considerable part of the electrical equipment does not meet the requirements of “Coal Mine Safety Regulations”. If non-explosion-proof components are to be used where there is less explosive gas mixture downhole, safeguards that require enhanced ventilation are not permitted. Therefore, users not only increased equipment and investment, but also increased the unsafe factors. This has greatly affected the use of belt conveyors in coal mines.