Dual-power dual-fan integrated switch with preferred main power

Abstract

The invention relates to a dual-power dual-fan integrated switch with a preferred main power. The dual-power dual-fan integrated switch mainly comprises a switch box, a front panel, an indicator light, a power layer button, a disconnecting switch, a power switch, a selective switch, a control box, a display screen, a setting button, a fan switch, a function selection button, a main switch, a junction box, a circuit board, and a wire; the dual-power dual-fan integrated switch is provided with two fans, two control box panels and two control circuits; the control circuits are controlled by a main circuit, a stand-by circuit and a microcomputer program, automatic conversion can be performed between the fans, the main power supply is automatically prioritized, and quick conversion and instantaneous automation are realized. The dual-power dual-fan integrated switch has an advanced design, is reasonable in setting, safe, stable and reliable and is a very ideal automatic control switching device for a coal mine underground fan.

Description

technical field [0001] The invention relates to an integrated switch with dual power sources and double fans with priority on the main power source, and belongs to the technical field of control and application of underground electrical equipment in coal mines. technical background [0002] In order to ensure the safety of air supply to the coal mine excavation face, the "Coal Mine Safety Regulations" requires that the underground excavation face must be equipped with two sets of power supplies and two sets of fans, one of which is working and the other is standby, and requires automatic switching of dual fans and dual power supplies; At present, the automatic switching control technology of dual power supply and double fan has been reported in the literature, for example, the development of automatic switching device for local ventilators in mines published by Dong Dai'an in Mining Safety and Environmental Protection Magazine in June 2005, Chen Chaofan in December 2001 in Co...

AI Technical Summary

Problems solved by technology

[0002] In order to ensure the safety of air supply to the coal mine excavation face, the "Coal Mine Safety Regulations" requires that the underground excavation face must be equipped with two sets of power supplies and two sets of fans, one of which is working and the other is standby, and requires automatic switching of dual fans and dual power supplies; At present, the automatic switching control technology of dual power supply and double fan has been reported in the literature, for example, the development of automatic switching device for local ventilators in mines published by Dong Dai'an in Mining Safety and Environmental Protection Magazine in June 2005, Chen Chaofan in December 2001 in Coal Mine Safety Magazine The published KJD11 local fan automatic switching monitor, the local fan automatic delay switching device designed by Wang Qiwang, etc., realized the automatic switching between the working fan and the standby fan; Switch between the two operating modes of the fan to achieve continuous air supply in the roadway. The disadvantage is: the main power supply can only supply power to the main fan, and the backup power can only supply power to the backup fan. When the main power + main fan, backup + backup fan If one of the links fails, the continuity of the air supply can no longer be guaranteed. When the main fan and the backup power supply fail, or the main power supply and the backup fan fail, it will cause an unplanned wind stop.

Images