Mining flame-proof and intrinsically safe power distribution device and contact power distribution device

Abstract

The invention discloses a mining flame-proof and intrinsically safe power distribution device and a contact power distribution device. A bus box is internally provided with two incoming line through-wall connection assemblies communicated with the outside and an inner wall through-wall connection assembly, the inner wall through-wall connection assembly is connected to the two incoming line through-wall connection assemblies, and the inner wall through-wall connection assembly enables the bus box and an isolation switch box to be communicated. A high-speed switch and an energy-taking voltage transformer are arranged in the high-speed switch box; the high-speed switch comprises an arc extinguish chamber, a current transformer, a voltage transformer and an opening and closing operation mechanism; a protector and a liquid crystal display are arranged in the protector box, the protector is connected with the liquid crystal display, operation buttons of the protector are arranged on the outer wall of the protector box, and the protector is respectively connected with the quick switch and the energy-taking voltage transformer through aviation cables; and an isolation switch is arranged in the isolation switch box, one side of the isolation switch is connected with the inner wall through-wall connecting assembly, and the other side of the isolation switch is connected with the wire inlet side of the quick switch and the energy-taking voltage transformer.

Description

technical field [0001] The invention belongs to the field of mine power distribution, and relates to a mine explosion-proof and intrinsically safe power distribution device and a contact power distribution device. Background technique [0002] Existing coal mine underground power distribution devices include mine flameproof power distribution devices and mine flameproof feeder switches, mine flameproof power distribution devices Magnetic mechanism circuit breaker, comprehensive protector, cabinet door, mechanical lock, inlet and outlet bell mouth, outlet cavity, operation button, protection LCD display, etc. [0003] The existing voltage transformer, current transformer, and permanent magnet mechanism operating circuit are hard-connected to the comprehensive protector through the secondary line, and the hard-wire connection is used. The failure rate and maintenance amount of the primary and secondary systems are relatively high. The existing operation buttons are due to It ...

AI Technical Summary

Problems solved by technology

[0003] The existing voltage transformer, current transformer, and permanent magnet mechanism operating circuit are hard-connected to the comprehensive protector through the secondary line, and the hard-wire connection is used. The failure rate and maintenance amount of the primary and secondary systems are high. The existing operation buttons are due to It is a push-type operation, and it is easy to enter dust and moisture during long-term operation, causing the components in the explosion-proof chamber to be easily damp or heated

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