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Control device of local fan of heading face and control method thereof

A technology for excavation working face and control device, which is applied in general control system, mining device, control/regulation system, etc. It can solve the problems of main control system failure shutdown, gas explosion, life and property, gas overrun, etc., so as to avoid supporting use , Guarantee continuity, solve the effect of poor real-time and reliability

Active Publication Date: 2011-02-16
SHANXI XINJU HEAVY MACHINERY MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the switch between the main and backup control systems of the local fan in the excavation face is not timely, and the switch can only be completed in one direction from the main to the backup, or the main control system fails and the backup control system refuses to operate, or The main control system is being overhauled, and the standby control system fails again. At this time, it will still cause unplanned power outages, gas overruns and other hidden dangers, and even cause gas explosion accidents, resulting in major loss of life and property.

Method used

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  • Control device of local fan of heading face and control method thereof
  • Control device of local fan of heading face and control method thereof
  • Control device of local fan of heading face and control method thereof

Examples

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Embodiment 1

[0024] A control device for a local ventilator in a tunneling working face according to the present invention is based on the existing local ventilator system in which the main control device and the standby control device are hot standby for each other, by adding a hard communication system and a redundant control system To realize the purpose of the present invention.

[0025]The existing local fan control device in the excavation working face consists of two sets of the same local fan control device (one main and one backup) and a local fan switching device. The main and backup local fan control devices are composed of the main control unit, analog It consists of input unit, digital input unit, setting value input unit, display unit, RS485 communication interface, drive unit and flameproof enclosure. The main control unit is composed of Siemens CPU226, digital module EM223 and analog module EM231. It is connected with analog input unit, switch input unit, setting value inpu...

Embodiment 2

[0037] The existing local fan control method is an automatic control method. After the main and standby control devices are powered on and initialized, click the start button of the control device, and the device will automatically control the main contactors of each circuit to close sequentially at a fixed interval of Δt according to the program. This device is the main control device, and the other is the backup control device, which is in the hot standby state; when the fan switching device detects that the main control device is powered off, it will control the backup control device to automatically control the contactor intervals of each circuit to be fixed according to the program. The set time Δt is sequentially closed to realize the one-way switch from master to backup.

[0038] The hard communication method is based on the hardware connection of the above-mentioned hard communication system, and the detection and control program is written through the STEP7 programming...

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Abstract

A control device of a local fan of a heading face and a control method thereof are disclosed, which are characterized in that a hard communication system and a redundancy control system are additionally installed in main and standby control devices of the local fan; the problems of poor real-time and reliability of switching between the main and standby control devices of the local fan are solvedby a hard communication method and a redundancy control method, thereby realizing the bilateral switching between the main and standby control devices, greatly reducing accident potentials such as gas accumulation, gas concentration and the like in the roadway due to untimely switching between the main and standby control devices, improving the real-time and reliability of the switching between the main and standby control devices while realizing accurate control and ensuring continuous normal running of the local fans in the mines.

Description

technical field [0001] The invention relates to an integrated control device and a control method for a local ventilator on a mine excavation face, in particular to a primary and backup control device and a control method for local ventilators on an excavation face as thermal backups for each other. The device includes a main control unit, a backup control unit, an analog input unit, a switch input unit, a setting value input unit, a display unit, an RS485 communication interface and a drive unit. technical background [0002] There have been some public literature reports on the research and application of the local fan control device and its control method in the driving face, such as "Automatic Control of Mine Local Ventilator" published by Peng Ren of China University of Mining and Technology in "Mine Machinery" in June 2002 According to the characteristics of the underground excavation working face and according to the safety and reliability, the automatic control of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B9/03E21F1/00E21F17/18
Inventor 宋建成耿蒲龙
Owner SHANXI XINJU HEAVY MACHINERY MFG CO LTD