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Mine single lane tunneling aeration machine integrated control system

A technology that integrates control systems and ventilators, applied in control systems, AC motor control, pump control, etc., can solve the problems of imperfect motor protection function and unreliable switching, shorten the time to find faults, avoid high heat generation, The effect of reducing system cost

Inactive Publication Date: 2010-04-14
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention is an integrated control system for mine single-lane tunneling ventilators, and aims to provide a hardware structure of the integrated control system for mine single-lane tunneling ventilators, which is used to solve the problem of switching between local fans on the mine single-lane tunneling face. Reliability, motor protection function is not perfect, and the problem of local ventilator frequency conversion gas emission

Method used

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  • Mine single lane tunneling aeration machine integrated control system
  • Mine single lane tunneling aeration machine integrated control system
  • Mine single lane tunneling aeration machine integrated control system

Examples

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Comparison scheme
Effect test

Embodiment 1

[0032] In this embodiment, a PID controller and a frequency converter are used to realize the function of automatic discharge of gas without exceeding the limit. The PID controller is designed by using the PID instruction wizard provided by the SIEMENSS7-200 series PLC special programming software Step7 Microwin V4.0 software. Using the PID instruction The wizard sets the parameters step by step, and a PID controller can be generated. The controller can obtain the gas concentration at the full wind pressure and air flow mixing place based on these samples to perform PID calculations, thereby controlling the output frequency of the inverter. The frequency converter adopts CHF series general-purpose frequency converter of Shenzhen INVT Company, which is U / F control mode, has RS-485 communication port, and can communicate with SIEMENS S7-200 series PLC.

[0033] Such as figure 1 As shown, the specific embodiment of the present invention includes a PLC 1, a frequency converter 2, ...

Embodiment 2

[0045] The control method of a kind of integrated control system of mine single-lane tunneling ventilator that the present invention realizes above-mentioned main purpose is: press the start button, contactor K 1 8. K 2 9 pulls in, the inverter 2 controls the local fan 11 to soft start to 20Hz, PLC 1 detects the gas concentration at the excavation face, if T 1 12 ≥ 1%, the system enters the state of gas discharge, at this time the system is based on the gas concentration T 2 The value of 13 automatically adjusts the speed of the local fan 11, when T 1 122 131 8. K 2 9 Disconnect, K 3 10 pulls in, and the local ventilator 11 is connected to the power frequency power supply for excavation ventilation; if T 1 81 8. K 2 9 Disconnect, K 3 10 pull in for tunneling ventilation; in the process of system tunneling ventilation, the gas sensor T 1 12 Real-time detection of gas concentration in the tunneling face, when T 1 When 12≥1%, disconnect the contactor K 3 10. Delay for 30...

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Abstract

This invention discloses mine single- tunnel driving ventilator integrating control system. PLC connects to frequency converter and display screen by series communicating interface. PLC connects to communicating expand module and analog value expand module by I / O bus. Main protecting circuit board and engine protecting circuit board connect to analog value expand module by I / O interface. PLC connects to main protecting circuit board and engine circuit board by I / O interface. This invention uses PLC as central processor and has hardware circuit and the control method. It achieves the stable switch of various controlling methods and protection function such as electric leakage, symmetric short, overload and steady state over-voltage. This invention ensures the continuity of tunneling ventilation and safety of gas discharging. It is adapted for tunneling ventilation of mine single tunnel driving working face and gas discharging.

Description

technical field [0001] The invention relates to a ventilating control system for tunneling in mine tunnels, in particular to an integrated control system for ventilators in single tunnel tunneling in mines. technical background [0002] There are two types of existing automatic control systems for tunneling ventilators in mine tunnels. One is "Development of Automatic Switching Devices for Mine Local Ventilators" published by Dong Dai'an of Panjiang Coal and Electricity Company in June 2005 in "Mine Safety and Environmental Protection" , introduced the working principle of the automatic switching between the working fan and the power backup fan in the mine excavation face, and through the field application, the automatic switching of the working fan and the backup fan was effectively implemented, ensuring the continuous and normal supply of the tunneling face. There is also the "KJD11 Local Ventilator Automatic Switching Monitor" published by Chen Chaofan of Pingdingshan Coa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D27/00H02P27/04
CPCF04D27/004Y02B30/70
Inventor 宋建成郑丽君耿蒲龙尚三军
Owner TAIYUAN UNIV OF TECH
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