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Underground local ventilator power supply system

A local ventilation and power supply system technology, which is applied in the integration of power network operating systems, information technology support systems, mechanical equipment, etc., can solve the problems of automatic switching switches that cannot be switched normally, working surfaces that are not ventilated, and hidden dangers of gas accumulation.

Active Publication Date: 2014-04-09
CHINA COAL XINJI ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, once a switch failure or human error occurs in this "dual fan, dual power supply" power supply system, the automatic transfer switch cannot be switched normally or the automatic transfer switch power supply fails, there will still be no ventilation on the working surface, gas Conditions where accumulation poses a safety hazard

Method used

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  • Underground local ventilator power supply system
  • Underground local ventilator power supply system

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Embodiment Construction

[0021] The specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing:

[0022] like figure 1 As shown, in the power supply system of the underground local ventilator of the present invention, in addition to the original two-way fan dedicated circuit, an additional power circuit is added.

[0023] The automatic transfer switch in this embodiment includes a main machine 1 and an auxiliary machine 2, the main machine 1 is connected to a dedicated transformer, and the auxiliary machine 2 is connected to another dedicated transformer. The local fan of the underground local fan includes a main local fan 3 and an auxiliary local fan 4, and the two local fans have a front-stage motor and a rear-stage motor respectively. The main machine 1 of the automatic transfer switch is connected with the front-stage motor and the rear-stage motor of the main local fan 3 , and the auxiliary machine 2 is connected with the front-stage motor ...

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Abstract

The invention discloses an underground local ventilator power supply system. One power special supply circuit is additionally added for supplying power for fans and controlled by a spare fan switch on a basis of a power supply system with two fans, two power supplies, three special power supply lines and two closed locks so as to ensure the power special supply circuit supplies power normally when a fan special supply circuit has failure, so that unplanned wind stopping is avoided. Through the underground local ventilator power supply system, safety of power supply for a local ventilator on a coal mine underground tunneling working surface is improved; the situation of unplanned wind stopping on a tunneling head caused due to reasons of circuit failures, manual error operation and the like can be reduced and avoided; and potential safety hazard brought for production due to increase of gas of the tunneling head caused due to the unplanned wind stopping can be eliminated.

Description

technical field [0001] The invention relates to a power supply system, in particular to a power supply system for an underground fan. Background technique [0002] At present, the outflow of coal mine gas in my country has caused many coal mine accidents. Especially in areas with a large amount of gas emission, with the continuous increase of mining depth and expansion of mining scale, the amount of gas emission has also increased year by year. According to statistics, 70% of coal mine gas accidents occurred in the tunneling face, and most of them Occurs in the process of gas emission. [0003] In order to effectively prevent accidents such as gas and coal dust explosions and gas suffocation caused by gas outburst or exceeding the limit during mine construction, the "Coal Mine Safety Regulations" stipulates that "gas emission areas, high gas mines, coal (rock) and gas (carbon dioxide) outburst mines, the local ventilators in the excavation face should be powered by special...

Claims

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Application Information

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IPC IPC(8): E21F17/06H02J9/06F04D27/00
CPCY02B70/30Y04S20/20
Inventor 邵华
Owner CHINA COAL XINJI ENERGY CO LTD
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