CN103452588A - Power-loss warning device of coal mine local fan backup power - Google Patents
Power-loss warning device of coal mine local fan backup power Download PDFInfo
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- CN103452588A CN103452588A CN 201210178091 CN201210178091A CN103452588A CN 103452588 A CN103452588 A CN 103452588A CN 201210178091 CN201210178091 CN 201210178091 CN 201210178091 A CN201210178091 A CN 201210178091A CN 103452588 A CN103452588 A CN 103452588A
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Abstract
The invention provides a power-loss warning device of coal mine local fan backup power. The power-loss warning device comprises a backup fan, a backup circuit and a relay. The backup circuit comprises backup power for supplying working power to the backup fan, and a transformer. A normally closed contact is used as a normally open contact of a warning circuit. The relay is in series connection with an output end of the transformer, and the warning circuit formed by the relay, the warning power and a warner connected in series is in parallel connection with the backup circuit. The power-loss warning device is simple in structure and convenient to maintain, can give warning timely to eliminate potential risks in local fan working areas far away from noise when the backup power is in loss.
Description
Technical field
The present invention relates to a kind of Safety of Coal Mine Production warning device, be specifically related to the dead electricity warning device of a kind of colliery portable blower standby electric power.
Background technology
When the digging laneway of colliery, air need to be inputted under mine, with the concentration that increases oxygen in mine and get rid of gas harmful in mine, should be supplied with the enough fresh airs in down-hole to meet the needs of staff to oxygen, and water down down-hole toxic and harmful and dust, guarantee safety in production; Also to regulate the down-hole weather, create good working environment.Wherein, local fan ventilation is a kind of tunneling ventilation method that China's mine extensively adopts, and it utilizes portable blower and air duct the fresh distinguished and admirable driving face of sending into.
In prior art, colliery portable blower switch is all taked dual power supply, main air blower running during the portable blower normal operation, and standby fan is standby, and active and standby two-way power supply has electricity simultaneously; When main air blower breaks down, switch is switched to standby fan immediately, makes the standby fan starting operation, thereby keeps driving face normally to ventilate.Because the number of times that standby fan starts is fewer, the work people is with a little less than paying close attention to also to its, time one is of a specified duration, its standby electric power easily slowly runs off, and the switch operated by rotary motion of portable blower is near portable blower, on-the-spot noise is large, during the standby electric power dead electricity, be not easy to be found, thereby it is abnormal to remind in time the staff to find and process the portable blower electric power system in time; And if now main air blower breaks down or the main power source dead electricity, will cause all cisco unity malfunctions of active and standby blower fan, thereby cause driving face not ventilate, bring danger to safety in production.
Summary of the invention
The present invention will solve above-mentioned deficiency exactly, provide a kind of simple in structure, be convenient to safeguard, and can and far-end acoustic-optic alarm during the portable blower standby electric power dead electricity of alarm.
In order to reach above-mentioned effect, the invention provides the dead electricity warning device of a kind of colliery portable blower standby electric power, comprise standby fan, for standby fanman, make the standby electric power of power supply and the stand-by circuit that transformer forms, also comprise the relay of constant close contact as the warning circuit normal opened contact, described relay is serially connected with the output of described transformer, and the warning circuit be composed in series by relay, warning power supply, alarm is in parallel with stand-by circuit.
The preferred version of such scheme is also to be provided with switch in described warning circuit.
The preferred version of such scheme is that described alarm is acoustooptic trembler bell.
Above-mentioned, acoustooptic trembler bell be applicable under coal mine and ambient medium in have in the environment of the explosive mixture bodies such as methane, coal dust, exchanging 50Hz, voltage is to 127V(36) supply line in, send interrupted or continuous sound equipment with voice signal, can transmit at a distance information warning.
Standby electric power is high voltage source 660V, and for the reliability of the power supply that guarantees to report to the police, whether outside 127V mains lighting supply for the warning power acquisition, because the mains lighting supply load is illuminating lamp, be very easy to find dead electricity, thus the reliability of the power supply of guaranteeing to report to the police.
When standby electric power has electricity, relay is by adhesive, and its constant close contact disconnects, and has disconnected warning circuit, and warning circuit does not work.And, when the standby electric power dead electricity, the relay constant close contact is closed, connect warning circuit, acoustooptic trembler bell is reported to the police at once, reminds at a distance staff on duty, and stand-by circuit has fault, in order to can be safeguarded it in time.
For the ease of the repair and maintenance to circuit, also be provided with switch in described warning circuit, maintenance only need to disconnect switch during warning circuit, just can be overhauled, and has prevented the false alarm of system between turn(a)round and causes unnecessary trouble.
The present invention compared with prior art has beneficial effect and has:
1, the present invention is when the standby electric power dead electricity, can and alarm, eliminating potential safety hazard;
2, warning device is located at the workplace away from portable blower with circuit, thereby can remind in time the staff to safeguard on time when standby electric power is abnormal;
3, the present invention is simple in structure, equipment investment is few;
4,, owing to being provided with switch, its warning circuit is convenient to safeguard.
The accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is circuit theory diagrams of the present invention;
In figure: J-relay, J1-constant close contact, BJ-acoustooptic trembler bell, K2-switch, B-transformer, AC660V-standby electric power, AC127V-warning power supply.
The specific embodiment
As shown in Figure 1, the dead electricity warning device of a kind of colliery portable blower standby electric power, the stand-by circuit of the standby electric power AC660V that comprise standby fan, for standby fanman, makes power supply and the transformer B of standby electric power composition, also comprise the relay J of constant close contact J1 as the warning circuit normal opened contact, described relay J is serially connected with the output of described transformer B, and the warning circuit be composed in series by relay J, warning power supply AC127V, acoustooptic trembler bell BJ, K switch 2 is in parallel with stand-by circuit.
For the reliability of the power supply that guarantees to report to the police, do not adopt the power supply of portable blower switch itself but adopt the 127V mains lighting supply of switch external, because the mains lighting supply load is illuminating lamp, whether be very easy to find dead electricity, thus the reliability of the power supply of guaranteeing to report to the police.
For the ease of repair and maintenance, an inspection switch is installed in alarm circuit, prevent that misreport of system is alert between turn(a)round, during maintenance, only inspection switch need to be disconnected, just can be overhauled, device can false alarm.
During the portable blower normal operation, the power supply of main circuit and stand-by circuit has electricity simultaneously, and main circuit is connected, the main air blower running, and standby fan is standby.And, when the main air blower fault, immediately be switched on stand-by circuit, standby fan running, itself and the relay that connects are by adhesive, and the constant close contact of relay disconnects, and has disconnected warning circuit, and warning circuit does not work; And break down or during the standby electric power dead electricity when stand-by circuit, the relay electric-loss tripping, constant close contact is closed, thereby connect the remote-end alarm circuit by cable run, acoustooptic trembler bell is reported to the police at once, and to remind the staff, stand-by circuit has fault and can safeguard in time.Warning device is located at the portable blower workplace large away from noise with circuit, thereby when standby electric power is abnormal, can remind in time staff on duty invent and safeguard in time.
Above embodiment is not limited only to protection scope of the present invention, all based on basic thought of the present invention, modify or change all belong to protection scope of the present invention.
Claims (3)
1. the dead electricity warning device of a colliery portable blower standby electric power, comprise standby fan, for standby fanman, make the standby electric power of power supply and the stand-by circuit that transformer forms, it is characterized in that: also comprise the relay of constant close contact as the warning circuit normal opened contact, described relay is serially connected with the output of described transformer, and the warning circuit be composed in series by relay, warning power supply, alarm is in parallel with stand-by circuit.
2. the dead electricity warning device of a kind of colliery portable blower standby electric power according to claim 1, is characterized in that: also be provided with switch in described warning circuit.
3. the dead electricity warning device of a kind of colliery portable blower standby electric power according to claim 1, it is characterized in that: described alarm is acoustooptic trembler bell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210178091 CN103452588A (en) | 2012-06-01 | 2012-06-01 | Power-loss warning device of coal mine local fan backup power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210178091 CN103452588A (en) | 2012-06-01 | 2012-06-01 | Power-loss warning device of coal mine local fan backup power |
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| Publication Number | Publication Date |
|---|---|
| CN103452588A true CN103452588A (en) | 2013-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210178091 Pending CN103452588A (en) | 2012-06-01 | 2012-06-01 | Power-loss warning device of coal mine local fan backup power |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422178A (en) * | 2015-12-18 | 2016-03-23 | 淮南师范学院 | Flame-proof and intrinsically safe local fan motor switch warning assembly |
-
2012
- 2012-06-01 CN CN 201210178091 patent/CN103452588A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422178A (en) * | 2015-12-18 | 2016-03-23 | 淮南师范学院 | Flame-proof and intrinsically safe local fan motor switch warning assembly |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131218 |