Flame-proof type double-loop feeder switch for mine

A feed switch and double-loop technology, applied in the field of feed switches, can solve the problems that the feed switch technology cannot meet the actual needs

Active Publication Date: 2014-02-26
WOLONG ELECTRIC NANYANG EXPLOSION PROTECTION GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the application of mine automation technology and the improvement of mine safety, local fans are always used in a one-use and one-standby operation mode, and with the development and promotion of wind, machine and electric frequency conversion integrated local fans, the existing Feed switch technology can no longer meet the actual needs

Method used

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  • Flame-proof type double-loop feeder switch for mine
  • Flame-proof type double-loop feeder switch for mine
  • Flame-proof type double-loop feeder switch for mine

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Embodiment Construction

[0019] Such as figure 1 , figure 2 and image 3 As shown, the present invention includes a flameproof enclosure, and the flameproof enclosure includes a main cavity 1 and a wiring cavity 2. The main cavity 1 is provided with a core frame and a double-circuit feed switch circuit board, and the side of the main cavity 1 is provided with a main transfer switch 3 and The sub-transfer switch 4, multiple wiring outlets are set on the wiring chamber 2; the number 5 in the figure is the manual button for controlling the operation of multiple loads in the main feed switch circuit, and the number 6 in the figure is the operation control button for multiple loads in the secondary feed switch circuit Manual button. The double-loop feed switch circuit board includes a main feed switch circuit, a secondary feed switch circuit and a dual-circuit power switching module, and the main feed switch circuit includes a main transfer switch QS2, a first signal acquisition circuit, and a first cen...

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PUM

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Abstract

The invention discloses a flame-proof type double-loop feeder switch for a mine. The flame-proof type double-loop feeder switch comprises a flame-proof outer shell. The flame-proof outer shell comprises a main cavity and a wiring cavity. A core support and a double-loop feeder switch circuit board are arranged inside the main cavity. A double-loop change-over switch is arranged on the side face of the main cavity. A plurality of wiring outlets are formed in the wiring cavity. The double-loop feeder switch circuit board comprises a primary feeder switch loop, a secondary feeder switch loop and a double-loop power source switching module. The primary feeder switch loop comprises a main change-over switch, a first signal acquisition circuit, a first central processing unit, a first power source control circuit, a first external signal input circuit and a first executing circuit. Circuit components and connected relation of the secondary feeder switch loop are consistent with those of the primary feeder switch loop.

Description

technical field [0001] The invention relates to a feed switch, in particular to a flameproof double-loop feed switch for mining frequency conversion integrated local fan control. Background technique [0002] With the rapid development of the coal industry and the improvement of coal mine mechanization and automation, higher requirements are put forward for the speed regulation and control of mine local ventilation fans. Ventilators in coal mines are controlled by inverters and power supplies, and the speed of the fans is controlled by adjusting the frequency of the inverters. Among them, the control of the inverters is also completed through the feed switch to control the fans. The existing feed switch is directly connected to the power transmission terminal of the power supply and the electrical equipment (fan, frequency converter), which belongs to independent control and can only provide power for one local fan. However, with the application of mine automation technolog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/06
Inventor 吴宣东胡述静邢印张浩彭小强许崇果
Owner WOLONG ELECTRIC NANYANG EXPLOSION PROTECTION GRP CO LTD
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