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Caution device for electric system and electric system

A power system and warning device technology, applied in circuit devices, measuring devices, measuring current/voltage, etc., can solve problems such as power outages, power lines unable to provide continuous power supply, and threats to mine safety production.

Active Publication Date: 2013-01-16
HUAINAN MINING IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But adopt above-mentioned method to must make the staff know in time which power line is not live, so that repair in time, otherwise when standby power line is not live, still may cause blackout when the power line that is working is not live. At this time, the backup power line cannot play the role of continuous power supply, so that a large-scale power outage will occur, which will pose a threat to the safe production of the mine

Method used

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  • Caution device for electric system and electric system
  • Caution device for electric system and electric system

Examples

Experimental program
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Embodiment 1

[0028] The first embodiment provides a warning device for a power system according to the present invention. Such as figure 1 As shown, the warning device 100 includes: a sensor 101, an input protection circuit 102, a current-voltage conversion circuit 103, an amplifier circuit 104, a detection circuit 105, a threshold setting circuit 106, a logic control circuit 107, a normally open contact 112, an indicator light 109, Ringer 110 , compensation circuit 111 and power supply 113 .

[0029] Among them, the sensor 101 is used to sense the high-voltage alternating electric field of the detected power line to generate a current signal; the compensation circuit 111 is connected between the sensor 101 and the input protection circuit 102, and is used to receive the current signal and compensate the current signal; the input The protection circuit 102 is used to maintain the waveform of the current signal after compensation, that is, to ensure that the current changes within a certai...

Embodiment 2

[0034] The second embodiment further improves the warning device 100 for the power system of the first embodiment. Such as figure 2 As shown, an auxiliary switch 201 is set on the warning device 100 for the power system, and the auxiliary switch 201 can be located between the logic control circuit 107 and the ringer 110, and is used to disconnect the circuit of the ringer 110 and stop the ringer 110. Work.

[0035]The auxiliary switch 201 is in a closed state when the power line is electrified. When the power line is not electrified, opening the auxiliary switch 201 can prevent the warning device 100 for power system from continuing to ring. When the power line needs to be maintained at ordinary times, the power line should also be without voltage. At this time, the auxiliary switch 201 can be turned on to prevent the warning device 100 for the power system from sending wrong alarm information.

[0036] According to the warning device 100 for the power system of this embodi...

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Abstract

The invention discloses a caution device for an electric system, as well as an electric system. The caution device comprises a sensor, a compensating circuit, input protecting circuit, a current-voltage converting circuit, an amplifying circuit, a threshold setting circuit, a wave detecting circuit, a logic controlling circuit, a constant open contact, an indicator lamp, a ringing device and a power supply, wherein the compensating circuit is connected with the sensor; the input protecting circuit is connected with the compensating circuit and is used for maintaining a waveform of a current signal; the current-voltage converting circuit is connected with the input protecting circuit; the amplifying circuit is connected with the current-voltage converting circuit; the threshold setting circuit is respectively connected with the amplifying circuit and a wave detecting circuit; the wave detecting circuit is connected with the threshold setting circuit; the logic controlling circuit is connected with the wave detecting circuit; the constant open contact is connected between the logic controlling circuit and the ringing device; the indicator lamp is connected with the logic controlling circuit; the ringing device is connected with the logic controlling circuit; and the power supply is used for providing the working power to the ringing device. According to the caution device for the electric system, as well as the electric system, the phenomenon that whether a power circuit is electrified can be acquired in real time.

Description

technical field [0001] The invention relates to mine safety technology, in particular to a warning device for a power system and a power system. Background technique [0002] Power systems are very important to coal mine production. If a large-scale power outage occurs, it will not only affect the normal operation of the equipment in the mine production system, but also affect the normal operation of mine ventilation, drainage equipment and hoisting equipment in coal mine production, resulting in mine wind stoppage, flooding, and emergency braking of hoisting equipment, etc. Accidents seriously threaten mine safety production. [0003] In the prior art, mines generally have two high-voltage power lines. When one of the power lines breaks down and stops supplying power, the other power line can bear the full load of the mine. Under normal circumstances, the mine power lines are operated separately. When one power line is running, the other power line must be charged for st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/155H02J9/00
Inventor 刘鹏程孙月庚董现忠高驰陆树成杜昆王伟李江
Owner HUAINAN MINING IND GRP