The key technique includes the contact vacuumstarter, pressure maintaining equipment for vacuum, the safety control in the vacuum drainage, the design and calculation method for the vacuum drainage.
真空接触启动、真空保压设备、系统安全监控以及系统的设计计算是真空排水系统的技术关键。
2
The paper introduces the working principle, control, protection and related performance of QJZ—400/1140(660) mine flameproof and intrinsically safe vacuum electromagnetic starter.