Intelligent local ventilation system

A local ventilation and intelligent technology, applied in mine/tunnel ventilation, mining equipment, program control in sequence/logic controllers, etc., can solve the problem of high working frequency of AC variable frequency controller, inconvenient equipment maintenance, and affecting the overall operation. and other problems to achieve the effect of improving reliability and security, fast response time, and improving system reliability

Active Publication Date: 2012-07-04
SHANXI LUAN ENVIRONMENTAL ENERGY DEV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The speed control system of this patent adopts AC frequency conversion speed control. Due to the high operating frequency of the AC frequency conversion controller, its operation reliability is low, the service life is short, and the electromagnetic interference to the environment is strong;
[0005] 2. The patent uses a multi-stage counter-rotating local fan, which has a complex structure and low ventilation efficiency;
[0006] 3. The patent adopts the integrated design of the frequency converter and the local fan. Although it saves space, it is extremely inconvenient, laborious and time-consuming during equipment maintenance, and the entrance affects the overall operation.

Method used

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Embodiment 1

[0035] see figure 1 , the intelligent local ventilation system of embodiment 1 includes: a switched reluctance local ventilation fan, an intelligent speed regulating device, a sensor or an underground signal monitoring system, the sensor and the underground signal monitoring system are in an alternative relationship, and the processed signal can come from the sensor or from the Downhole signal monitoring system.

[0036] The intelligent speed control device includes a power filter, a contactor, a switched reluctance controller, a programmable logic controller PLC control system 1, an intrinsically safe isolation circuit and a transformer. The external power supply is connected to the power filter through a cable, and the power filter passes through The cable is connected to the contactor, the contactor is an AC vacuum contactor, the AC vacuum contactor is connected to the switched reluctance controller through the cable, the switched reluctance controller is connected to the s...

Embodiment 2

[0042] The intelligent local ventilation system of Embodiment 2 includes: a switched reluctance local ventilation fan, an intelligent speed regulating device, a monitoring device, sensors or an underground signal monitoring system.

[0043] The monitoring device is provided with a control and display panel 2, a communication module and an audible and visual alarm 2. The core control component of the monitoring device, the programmable logic controller PLC, is the core control component of the control system 2, which also adopts the S7-200 programmable logic controller PLC of Siemens. The monitoring device and the intelligent speed regulating device are connected through the control line. The S7-200 programmable logic controller PLC in the intelligent speed regulating device has two RS-485 communication ports, one for monitoring the switched reluctance controller, The other is used to connect with the 485 communication port of the programmable logic controller PLC of the monito...

Embodiment 3

[0045] The intelligent local ventilation system of embodiment 3 includes two systems of the main system and the backup system, the main system and the backup system are independent of each other, and each has a switched reluctance local fan with the same structure and function, an intelligent speed regulating device and gas, temperature , the wind speed sensor, the programmable logic controller PLC control system 1 in the intelligent speed regulating device of the main system and the standby system are connected with each other. See figure 1 , all the other are identical with embodiment 1.

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Abstract

The invention belongs to site ventilation technologies and particularly relates to an intelligent local ventilation system applied to mines underground. The intelligent local ventilation system comprises a local ventilator, a speed adjusting device and a sensor or an underground signal monitoring system, wherein the local ventilator is a switch reluctance local ventilator. The speed adjusting device is an intelligent speed adjusting device and comprises a power source filter, a contactor, a switch reluctance controller, a programmable logic controller (PLC) control system 1, an intrinsically-safe isolating circuit and a transformer. The sensor is a gas, temperature and wind speed sensor. The sensor or the underground signal monitoring system is connected with the PLC control system 1 through the intrinsically-safe isolating circuit. Compared with the prior art, the intelligent local ventilation system is simple in structure, convenient to maintain, small in electromagnetic interference, high in system efficiency and long in service life, runs reliably and can achieve intelligent speed adjustment.

Description

technical field [0001] The invention belongs to the place ventilation technology, in particular to an intelligent local ventilation system applied in underground mines. Background technique [0002] At present, the local ventilation system under the mine generally uses ordinary motors. Once put into operation, the local ventilation fan will run at the rated air volume and wind pressure, forming the so-called "one wind blowing" phenomenon. This kind of ventilation system often cannot reasonably control the amount of gas discharged, which may cause the gas to exceed the limit in some areas and bring unsafe factors. In order to ensure safety, the selection of the local fan power of the system is usually set according to the principle of ensuring the normal oxygen inhalation and gas concentration of personnel do not exceed the limit at the longest distance. Therefore, the selected power is generally too large. When the tunneling depth is shallow , there will be a phenomenon of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F1/08E21F17/18F04B49/06G05B19/05
Inventor 白宏峰张文发丁金龙仝燕翔罗自明秦卫斌
Owner SHANXI LUAN ENVIRONMENTAL ENERGY DEV
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