Flame-proof type dual power supply multi-loop combined switch for mining

A combination switch and explosion-proof technology, which is applied in the field of mine explosion-proof dual power supply multi-circuit combination switch, can solve the problems of gas accumulation danger, inability to eliminate gas, and inability to complete automatic control and management of electric power, etc., to achieve reliable performance, prevent The effect of gathering and easy maintenance

Active Publication Date: 2008-06-18
ELECTRIC LIGHT EXPLOSION PROTECTED TECHSHANGHAI
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0002] The vacuum electromagnetic starter for wind power lock is widely used in mines and is one of the most common and conventional wind power locks. At present, mine ventilation equipment uses a single power supply, single circuit power supply, and uses photodiode display. When there is a power failure

Method used

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  • Flame-proof type dual power supply multi-loop combined switch for mining
  • Flame-proof type dual power supply multi-loop combined switch for mining
  • Flame-proof type dual power supply multi-loop combined switch for mining

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Embodiment

[0014] As shown in Figure 1, it is a schematic structural diagram of a mine explosion-proof dual-power multi-circuit combination switch, including a housing 1. Two independent flame-proof wiring chambers 2 are arranged on the upper end of the housing 1, and two independent isolation chambers are arranged in the middle. Explosion main cavity 4, two isolation reversing switches 3 are respectively set in two independent flameproof main cavity 4, respectively connected with the wiring terminals in two independent flameproof wiring cavity 2 at the upper end, and grounding terminal 5 is respectively set in The lower end and the top of the casing 1 are respectively provided with a control button 6, a setting button 7 and a comprehensive protector 11 on the front door panel 8 of the casing 1, and a stop sign 9 and a reversing indicator sign 10 are arranged on one side of the casing 1. The anti-electric board 12 is arranged on the top of the two independent flameproof wiring chambers 2 ...

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Abstract

The invention relates to a mining flameproof dual-power multi-loop combination switch. The invention is characterized in that the invention comprises a shell; the upper end of the shell is provided with two independent flameproof wiring chambers and the middle thereof is provided with two independent flameproof main chambers; two isolation phase-change switches are arranged in the two independent flameproof main chambers respectively and respectively connected with the wiring terminals which are arranged in the two independent flameproof wiring chambers at the upper end; grounding terminals are arranged at the lower end and on the top of the shell respectively; the front door of the shell is provided with a starting button, a setting button and a comprehensive protector respectively; one side of the shell is provided with a stopping label and a steering indicating label; an electricity prevention plate is arranged on the top of two independent flameproof wiring chambers. The invention has the advantages of reliable performance, convenient maintenance, ensuring the requirement of the underground ventilation of coal mine, preventing the collection of gas, and avoiding the occurrence of accidents.

Description

technical field [0001] The invention relates to a mine explosion-proof dual-power multi-circuit combination switch, which is used in underground coal mines to control three-phase squirrel cages in lines with AC 50Hz, voltage 380V to 1140V, and rated currents of 80A and 120A respectively. The direct or long-distance start and stop of the type asynchronous motor can realize the automatic conversion of the standby fan; the two-machine drag can start and run continuously and protect the motor and related circuits. It is especially suitable for uninterrupted air supply to working faces and roadways in underground coal mines, ensuring the ventilation needs of underground coal mines, preventing the accumulation of gas, and avoiding accidents. It belongs to the technical field of combined switches. Background technique [0002] The vacuum electromagnetic starter for wind power lock is widely used in mines and is one of the most common and conventional wind power locks. At present, m...

Claims

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Application Information

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IPC IPC(8): H02B1/00H02B1/16H02J9/00H02H7/00
Inventor 朱丹
Owner ELECTRIC LIGHT EXPLOSION PROTECTED TECHSHANGHAI
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