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Three-power vacuum electromagnetic starter used for coal mine fan

A technology of electromagnetic starter and three power sources, which is applied in the direction of motor generator/starter, motor starter, etc., can solve the problems of main and auxiliary fans not working, excavation roadway gas exceeding the standard, etc., and achieve long trouble-free running time, anti-corrosion Disruptive effect

Inactive Publication Date: 2013-07-10
NANJING SHUANGJING ELECTRICAL
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AI Technical Summary

Problems solved by technology

[0002] At present, the fan electromagnetic starter with dual power supply and double circuit is used in coal mines. When the main fan (auxiliary fan) is overhauled by the upper power supply, the auxiliary fan (main fan) trips due to a fault during operation or the main and auxiliary fans trip due to a fault. The main and auxiliary fans are unable to work, resulting in excessive gas in the excavation roadway

Method used

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  • Three-power vacuum electromagnetic starter used for coal mine fan
  • Three-power vacuum electromagnetic starter used for coal mine fan

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Embodiment

[0010] Embodiment: The vacuum electromagnetic starter with three power supplies for coal mine fans in this embodiment includes a main fan and an auxiliary fan, and is characterized in that it also includes a third standby fan; the three fans are respectively powered by three independent power sources and controlled Part of the analog quantity acquisition module is connected to Siemens S7-200 PLC controller, and the controller is connected to full Chinese color LCD display.

[0011] figure 1 It is a schematic diagram of the connection between the starter and the blower of the embodiment, and mainly includes a vacuum electromagnetic starter with three power sources for a coal mine fan, a blower with three blowers, and a control part. The working mode is as follows: in normal state, the starter is powered (must be three independent power supplies), the main and auxiliary fans rotate and switch normally according to the set time, and the third standby machine is in a charged stand...

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Abstract

A three-power vacuum electromagnetic starter used for a coal mine fan belongs to the coal mine electrical appliance technical field. The three-power vacuum electromagnetic starter used for the coal mine fan comprises a main fan and an auxiliary fan and is characterized by further comprising a third standby fan. The main fan, the auxiliary fan and the third standby fan are respectively supplied power by three paths of independent power and connected with a Siemens S7-200 programmable logic controller (PLC) through an analog quality collecting module of a control part. The PLC is connected with a liquid crystal display screen. The three-power vacuum electromagnetic starter used for the coal mine fan is different from a regular two-loop fan switch due to the fact that a third loop control is added, and the control part adopts the Siemens S7-200 PLC. In a normal state, the main fan and the auxiliary fan normally conduct switching work, and the third standby fan is electrified and standby. When the main fan and the auxiliary fan stop working due to failures, the third standby fan is started. The three-power vacuum electromagnetic starter used for the coal mine fan effectively improves coal mine working face ventilation efficiency and ensures power supply reliability of local fan power.

Description

technical field [0001] The invention belongs to the technical field of coal mine electric appliances, and relates to a three-power vacuum electromagnetic starter capable of providing various protections and switching operation modes for the operation of coal mine underground fans. Background technique [0002] At present, the fan electromagnetic starter with dual power supply and double circuit is used in coal mines. When the main fan (auxiliary fan) is overhauled by the upper power supply, the auxiliary fan (main fan) trips due to a fault during operation or the main and auxiliary fans trip due to a fault. Both the main and auxiliary fans were unable to work, causing gas in the excavation roadway to exceed the standard. Contents of the invention [0003] The present invention provides a three-power vacuum electromagnetic starter for a coal mine fan in order to overcome the shortcomings and deficiencies of the above-mentioned products. [0004] The present invention is re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P1/54
Inventor 田金梅陈国辉朱永
Owner NANJING SHUANGJING ELECTRICAL
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