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Mining dual-power dual-fan ventilation system

A technology of ventilation system and emergency power supply system, which is applied in the field of local ventilation system with dual power supply and double fan, and can solve the problems of lack of protection measures, affecting the safe operation of equipment and the life safety of underground workers.

Active Publication Date: 2012-03-14
湖南平安矿井安全技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, once the main and backup power supply and the backup power supply are cut off at the same time, or the main and backup local ventilation systems fail at the same time, the dual power supply and dual fans that have been in operation lack corresponding protection measures, which seriously affects the safe operation of the equipment and the life safety of underground workers.

Method used

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  • Mining dual-power dual-fan ventilation system
  • Mining dual-power dual-fan ventilation system
  • Mining dual-power dual-fan ventilation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1, the present invention comprises independent and dedicated main power supply, backup power supply, main ventilation system and backup ventilation system, main power supply and main ventilation system join, backup power supply and backup ventilation system join, main ventilation system and backup ventilation system The air outlet end is connected to the Y-type inverter at the same time, and then the air is sent to the ventilation duct. The two air ducts on the Y-type inverter can be connected to the air outlets of the main and backup ventilation systems respectively. When the main and backup fans are changed, the Y-type inverter can automatically complete the conversion of the airflow channel, that is, when one fan is working , the damper in the connected air duct opens, and the damper in the air duct connected to the standby fan automatically closes. The interface parts of the Y-type inverter can be connected by flanges to facilitate disassembly and replace...

Embodiment 2

[0025] Embodiment 2, the power access device of the EPS emergency power supply system of the present invention can also be connected to the charging unit, the battery management unit, the battery pack unit and the inverter circuit of the PLC control unit after the input transformer, and then connected to the output transformer to output The transformer is connected to the electromagnetic starter of the main ventilation system or the standby ventilation system; a power on-off control device is set between the battery pack unit and the inverter circuit. The connected power is sent to the charging system after being input into the transformer, then processed by the inverter circuit, output through the output transformer, and then connected to the electromagnetic starter, frequency converter, or local fan of the main ventilation system; it can also be connected to the backup ventilation system Electromagnetic starters, frequency converters, or local fans. refer to figure 1 and ...

Embodiment 3

[0026] Embodiment 3, the power access device of the EPS emergency power supply system of the present invention can also be connected to the charging unit, battery management unit, battery pack unit and booster unit of the PLC control unit after the input transformer, and can also be used in the battery pack A power on-off control device is set between the unit and the booster unit; the booster unit is connected to the local fan of the main ventilation system or the backup ventilation system or the frequency converter of the local fan. refer to figure 2 and Figure 6 , and the rest are the same as the above-mentioned embodiment.

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Abstract

The invention relates to a mining dual-power dual-fan ventilation system, which mainly solves the technical problems of less functions, poor reliability, low control precision and the like of the traditional dual-power dual-fan ventilation systems which are mostly controlled by relays. The technical scheme of the invention is as follows: an online switching connection circuit is arranged between two electromagnetic starters of a main ventilation system and a standby ventilation system which are parallel; an EPS (Emergency Power System) is arranged between the main ventilation system and the standby ventilation system which are parallel; a PLC (Programmable Logic Controller) unit is respectively connected with a battery management unit, a charging unit and a power output control device in the EPS to form a feedback loop; the PLC unit is respectively connected with the electromagnetic starters of the main ventilation system and the standby ventilation system outside the EPS to from a feedback loop; and the PLC unit is used for detecting the on-off states of a main power supply and a standby power supply, the operation states of the main local ventilation system and the standby local ventilation system. The mining dual-power dual-fan ventilation system can be widely applied to various mining ventilation systems.

Description

technical field [0001] The invention relates to a mine ventilation system, in particular to a local ventilation system with dual power supplies and double blowers. Background technique [0002] In my country's coal mine ventilation system, dual power supply and dual fans are a relatively efficient and safe form of fan composition. The automatic switching device is the key equipment in the system, which is directly related to the safe operation of the entire system. Therefore, the effectiveness and reliability of the protection and control methods of the dual power supply and dual fan automatic switching device are crucial to its safe operation. At present, once the main and backup power supply and the backup power supply are cut off at the same time, or the main and backup local ventilation systems fail at the same time, the dual power supply and dual fans that have been in operation lack corresponding protection measures, which seriously affects the safe operation of the eq...

Claims

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Application Information

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IPC IPC(8): E21F1/00E21F17/06
Inventor 肖务里贺习平张求华
Owner 湖南平安矿井安全技术有限公司
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