CN102684295A - Mining flameproof dual-power switching control box - Google Patents
Mining flameproof dual-power switching control box Download PDFInfo
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- CN102684295A CN102684295A CN2012101347195A CN201210134719A CN102684295A CN 102684295 A CN102684295 A CN 102684295A CN 2012101347195 A CN2012101347195 A CN 2012101347195A CN 201210134719 A CN201210134719 A CN 201210134719A CN 102684295 A CN102684295 A CN 102684295A
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Abstract
The invention belongs to electrical control technology, and relates to a mining flameproof dual-power switching control box which comprises a main transformer and an accessory transformer, the main transformer is connected with a main power supply, the accessory transformer is connected with an accessory power supply, one position of a secondary output end of each of the main transformer and the accessory transformer is controlled by a main relay of the main power supply and an accessory relay of the accessory power supply and then is connected with a load through a protector, another position of the secondary output end of each of the main transformer and the accessory transformer is connected with a PLC (programmable logic controller) after passing through a main power on-off detecting circuit and an accessory power on-off detecting circuit, the PLC is connected with input ends of the main relay and the accessory relay, the main power on-off detecting circuit is provided with a manual switching button for switching the main power supply and the accessory power supply, and the accessory power on-off detecting circuit is provided with an output disconnecting button. The mining flameproof dual-power switching control box has the advantages of convenience in installation, simplicity in operation, safety and reliability. By combining traditional relay control with a modern advanced programmable logic controller, stable running of a system is ensured, and complicated wiring of the control box is greatly reduced.
Description
Technical field
The invention belongs to the application of Electrical Control Technology, relate to a kind of downhole monitoring equipment duplicate supply supply arrangement, i.e. flame-proof mine duplicate supply switching controls case at mining electric field.
Background technology
Underground substation formula safety monitoring system substation all adopts the power supply of single circuit power supply system at present; Though the substation storage battery can guarantee the self discharge power supply more than 2 hours after electric power system has a power failure, the substation power supply is many and the digging power supply is shared, and it is big influenced by the digging power supply; In case the mining system interruption duration surpasses more than 2 hours; The Monitor Sub-Station of Less storage battery will occur discharging fully and cause the supervisory control system locking to quit work, and the substation storage battery capacity that discharge and recharge meeting shortening storage battery relevant, frequent with discharging and recharging number of times in useful life; Correspondingly shortened the storage battery self-powered time, totally unfavorable to safety.
Domestic present supply power mode to supervisory control system has two kinds, and a kind of mode is the special circuit power supply, and this mode need be laid private cable from ground toward the down-hole; Though avoided the influence of down-hole mining power supply; But laying-out is long, and the line footpath is bigger, and voltage drop is big; Still be single circuit power supply, the power down phenomenon still is not resolved.Another kind of mode is exactly the underground substation single circuit power supply that generally adopts at present, and it is bigger influenced by the digging power supply, and the supervisory control system power down is frequent.More external coal mining Country Monitor systems adopt bus type more, dedicated transformer and special circuit power supply, and it is more stable to supply power, and supervisory control system power down phenomenon is less relatively.
Summary of the invention
The present invention provides a kind of easy to use, reliable flame-proof mine duplicate supply switching controls case of power supply in order to remedy the deficiency of prior art.
The present invention realizes through following technical scheme:
Flame-proof mine duplicate supply switching controls case of the present invention; Its special character is: comprise the main transformer that connects main power source and the teaser transformer of auxiliary connection power supply, a place of the secondary output end of major and minor transformer connects load through protector respectively jointly after the secondary relay control of the main relay of main power source, auxiliary power; Another place of the secondary output end of major and minor transformer connects the PLC controller respectively behind major and minor on/off testing circuit; The PLC controller connects the input of major and minor relay; Main power source break-make testing circuit is provided with the manual switchover button that is used to switch major and minor power supply, and auxiliary power break-make testing circuit is provided with the output cut-off push button.
Described main power source break-make testing circuit comprises the main rectifier bridge through another place of the secondary output end of fuse connection main transformer; Be connected with energy-absorbing resistance between main rectifier bridge two outputs; One of them output connects the PLC controller through main relay; Another is connected the PLC controller through diode with the output cut-off push button to of another output through diode connection PLC controller, and the manual switching push button of warp connects the PLC controller again; Auxiliary power break-make testing circuit comprises the secondary rectifier bridge through another place of the secondary output end of fuse auxiliary connection transformer; Be connected with energy-absorbing resistance between secondary rectifier bridge two outputs; One of them output connects the PLC controller through secondary relay; Another is connected the PLC controller through diode with the output cut-off push button to of another output through diode connection PLC controller, and one directly connects the PLC controller again.
The invention has the beneficial effects as follows, easy for installation, simple to operate, safe and reliable.It when guaranteeing system stable operation, has significantly reduced the loaded down with trivial details wiring of complex equipments through traditional relay control and the mode that modern advanced programmable logic controller (PLC) combines.This invention can be accomplished judgement and analysis to the break-make of the major and minor two-way power supply in outside through a programmable logic controller (PLC), and then realizes the automatic switchover between the major-minor power supply.This invention simultaneously can also be according to the difference of load equipment, revises partial function through programming instruction, and the realization time is regulated and to the Optimal Control of load end.The duplicate supply that finally reaches reliable and stable automaticallyes switch, to realize dual power supplies such as underground monitoring substation and self closing door.This invention simultaneously has manual switchover breaks off and the operating state Presentation Function with output, and very convenient underground work personnel grasp the operating state of this equipment and at any time to the service work of load that this equipment connects.Under the situation that does not influence other loaded work pieces, accomplish Monitor Sub-Station of Less and other are inserted the power failure maintenance work of the load equipment of this flame-proof mine duplicate supply switching controls case.
Description of drawings
Fig. 1 is a control cabinet profile front view, and Fig. 2 is a control flow chart, and Fig. 3 is an electrical schematic diagram.Fig. 4 is a control cabinet profile rearview.
Among the figure, 1 main transformer, 2 teaser transformers, 3,4 fuses, 5 main rectifier bridges; 6 secondary rectifier bridges, 7,8 energy-absorbing resistance, 9,10 diodes, 11 manual switchover buttons, 12 output cut-off push buttons; 13 PLC controllers, 14 main relays, 15 secondary relays, 16 protectors, 17 wiring place; 18 casings, 19 line ball horn mouths, 20 buttons, 21 observation windows, 22 earth studs.
Embodiment
Accompanying drawing is a kind of specific embodiment of the present invention.
Flame-proof mine duplicate supply switching controls case of the present invention; Comprise the main transformer 1 that connects main power source and the teaser transformer 2 of auxiliary connection power supply, a place of the secondary output end of major and minor transformer connects loads through protector 16 respectively jointly after secondary relay 15 controls of the main relay 14 of main power source, auxiliary power; Another place of the secondary output end of major and minor transformer connects PLC controller 13 respectively behind major and minor on/off testing circuit; The PLC controller connects the input of major and minor relay 14,15; Main power source break-make testing circuit is provided with the manual switchover button 11 that is used to switch major and minor power supply, and auxiliary power break-make testing circuit is provided with output cut-off push button 12.
Described main power source break-make testing circuit comprises the main rectifier bridge 5 through another place of the secondary output end of fuse 3 connection main transformers 1; Be connected with energy-absorbing resistance 7 between main rectifier bridge two outputs; One of them output connects PLC controller 13 through main relay 14; Another is connected the PLC controller through diode with the output cut-off push button to of another output through diode 9 connection PLC controllers, and the manual switching push button 11 of warp connects the PLC controllers again; Auxiliary power break-make testing circuit comprises the secondary rectifier bridge 6 through another place of the secondary output end of fuse 4 auxiliary connection transformers 2; Be connected with energy-absorbing resistance 8 between secondary rectifier bridge two outputs; One of them output connects PLC controller 13 through secondary relay 15; Another is connected the PLC controller through diode 10 with output cut-off push button 12 to of another output through diode 10 connection PLC controllers, and one directly connects the PLC controller again.
The material impact that the present invention is directed to the frequent power down of underground monitoring substation and safety in production is produced sets out, and makes full use of the existing double-cricuit supply in down-hole, utilizes modern electrical control art designs to go out duplicate supply automatic switchover control cabinet.This control cabinet can be contained voltage in the AC18-36V scope according to the voltage class of monitoring equipment under the existing well; Can reliablely and stablely power supply supply be provided for the downhole monitoring device end; Thereby overcome the frequent influence that has a power failure supervisory control system is caused of digging, guarantee the even running of supervisory control system.Not only the stable operation to safety monitoring system has reliable power supply guarantee, can also press observation system, personnel location system and the main continuous power supply of elevator system that reliable guarantee is all arranged to the ore deposit, down-hole.
To outstation wiring situation, be mostly that a feeding switch promptly to the outstation power supply, gives other power devices again according to present down-hole electric substation.When the staff overhauls outstation or during other work, needs to break off the feeding switch control loop, cause that other equipment also will cut off the power supply except the outstation outage, have a strong impact on underground work efficient and fail safe.The present invention is directed to this phenomenon, when design explosion-proof type duplicate supply switching controls case, designed manual switchover and output break function button.Whether the underground work personnel can regularly detect this equipment through manual switchover button switching major-minor power supply can normally realize handoff functionality; This equipment is connected between outstation and the upper level power supply; When the staff need carry out service work to outstation; Just can break off the power supply of outstation through the output cut-off push button; Under the situation that does not influence other equipment works, accomplish service work, convenient and swift, improved operating efficiency and fail safe greatly.In addition, this invention also is designed with working station indicator, comprises that indication of major-minor power work state and auxiliary power fault show, safe and reliable, operating state comes into plain view.
The present invention when guaranteeing system stable operation, has significantly reduced the loaded down with trivial details wiring of complex equipments through traditional relay control and the mode that modern advanced programmable logic controller (PLC) combines.This invention can be accomplished judgement and analysis to the break-make of the major and minor two-way power supply in outside through a programmable logic controller (PLC), and then realizes the automatic switchover between the major-minor power supply.This invention simultaneously can also be according to the difference of load equipment, revises partial function through programming instruction, and the realization time is regulated and to the Optimal Control of load end.The duplicate supply that finally reaches reliable and stable automaticallyes switch, to realize dual power supplies such as underground monitoring substation and self closing door.This invention simultaneously has manual switchover breaks off and the operating state Presentation Function with output, and very convenient underground work personnel grasp the operating state of this equipment and at any time to the service work of load that this equipment connects.Under the situation that does not influence other loaded work pieces, accomplish Monitor Sub-Station of Less and other are inserted the power failure maintenance work of the load equipment of this flame-proof mine duplicate supply switching controls case.
Among Fig. 3; Transformer 1,2 for major and minor power supply; Input voltage can be for exchanging 1140V or 660V; One place of the secondary output end of this transformer connects the control relay 14,15 of major and minor power supply, and another place connects the rectifying device 5,6 of control loop, wherein protects the safeties 3,4 of control loop in addition; Energy-absorbing resistance 7,8, the automatic switchover time of shortening major-minor power supply; Unidirectional conducting diode 9,10 realizes that Programmable Logic Controller 13 does not cut off the power supply, and monitors major-minor on/off situation simultaneously; Manual switchover button 11 and output cut-off push button 12; Output loop protector 16; The final load of equipment inserts through wiring place 17, is followed successively by major and minor loop and powers on, and equipment gets into normal operating conditions.
Flame-proof mine duplicate supply switching controls case of the present invention, its casing 18 outsides are provided with line ball horn mouth 19, observation window 21, button 20, earth stud 22.
Use the technical staff of this equipment only need insert major and minor two-way power supply and draw output cable, can accomplish installation connection work to major and minor power supply electrifying successively then this equipment according to the equipment wiring schematic diagram to load equipment.Through manual switchover and output cut-off push button the operation and the function of equipment are carried out test job after powering on.The whole machine installation debugging finishes.Easy for installation, simple to operate, safe and reliable.
Claims (2)
1. flame-proof mine duplicate supply switching controls case; It is characterized in that: comprise the main transformer that connects main power source and the teaser transformer of auxiliary connection power supply, a place of the secondary output end of major and minor transformer connects load through protector respectively jointly after the secondary relay control of the main relay of main power source, auxiliary power; Another place of the secondary output end of major and minor transformer connects the PLC controller respectively behind major and minor on/off testing circuit; The PLC controller connects the input of major and minor relay; Main power source break-make testing circuit is provided with the manual switchover button that is used to switch major and minor power supply, and major and minor on/off testing circuit is provided with the output cut-off push button.
2. flame-proof mine duplicate supply switching controls case according to claim 1; It is characterized in that: main power source break-make testing circuit comprises the main rectifier bridge through another place of the secondary output end of fuse connection main transformer; Be connected with energy-absorbing resistance between main rectifier bridge two outputs; One of them output connects the PLC controller through main relay; Another is connected the PLC controller through diode with the output cut-off push button to of another output through diode connection PLC controller, and the manual switching push button of warp connects the PLC controller again; Auxiliary power break-make testing circuit comprises the secondary rectifier bridge through another place of the secondary output end of fuse auxiliary connection transformer; Be connected with energy-absorbing resistance between secondary rectifier bridge two outputs; One of them output connects the PLC controller through secondary relay; Another is connected the PLC controller through diode with the output cut-off push button to of another output through diode connection PLC controller, and one directly connects the PLC controller again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210134719.5A CN102684295B (en) | 2012-05-04 | 2012-05-04 | Mining flameproof dual-power switching control box |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210134719.5A CN102684295B (en) | 2012-05-04 | 2012-05-04 | Mining flameproof dual-power switching control box |
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| CN102684295A true CN102684295A (en) | 2012-09-19 |
| CN102684295B CN102684295B (en) | 2014-04-16 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957200A (en) * | 2012-12-05 | 2013-03-06 | 浙江理工大学 | Method and system for managing backup power supply of underwater real-time detecting instrument |
| CN104993578A (en) * | 2015-07-28 | 2015-10-21 | 兖州煤业股份有限公司 | Power supply apparatus of extraction face sensor |
| CN105391160A (en) * | 2015-12-28 | 2016-03-09 | 合肥金新允电子技术有限公司 | Double power supply intelligent switching system |
| CN109462273A (en) * | 2018-12-21 | 2019-03-12 | 江苏金博途科技有限公司 | A kind of mining flameproof dual-power switching control box |
| CN112928903A (en) * | 2019-12-05 | 2021-06-08 | 漳州灿坤实业有限公司 | Wide voltage input circuit, baking tray, ironing device and electric hair drier |
Citations (4)
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| CN102231565A (en) * | 2011-07-18 | 2011-11-02 | 山西潞安环保能源开发股份有限公司 | Dual power supply local fan integration control system |
| CN102255379A (en) * | 2011-07-30 | 2011-11-23 | 太原双太利安科技有限公司 | Mining explosion-proof dual-power switching power box |
| CN102373941A (en) * | 2011-11-22 | 2012-03-14 | 平安电气股份有限公司 | Mining dual-power dual-fan ventilation system |
| CN202535147U (en) * | 2012-05-04 | 2012-11-14 | 济南嘉宏科技有限责任公司 | Mining explosion-suppression type double-power supply switching control box |
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2012
- 2012-05-04 CN CN201210134719.5A patent/CN102684295B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102231565A (en) * | 2011-07-18 | 2011-11-02 | 山西潞安环保能源开发股份有限公司 | Dual power supply local fan integration control system |
| CN102255379A (en) * | 2011-07-30 | 2011-11-23 | 太原双太利安科技有限公司 | Mining explosion-proof dual-power switching power box |
| CN102373941A (en) * | 2011-11-22 | 2012-03-14 | 平安电气股份有限公司 | Mining dual-power dual-fan ventilation system |
| CN202535147U (en) * | 2012-05-04 | 2012-11-14 | 济南嘉宏科技有限责任公司 | Mining explosion-suppression type double-power supply switching control box |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957200A (en) * | 2012-12-05 | 2013-03-06 | 浙江理工大学 | Method and system for managing backup power supply of underwater real-time detecting instrument |
| CN102957200B (en) * | 2012-12-05 | 2014-08-13 | 浙江理工大学 | Method and system for managing backup power supply of underwater real-time detecting instrument |
| CN104993578A (en) * | 2015-07-28 | 2015-10-21 | 兖州煤业股份有限公司 | Power supply apparatus of extraction face sensor |
| CN104993578B (en) * | 2015-07-28 | 2018-01-30 | 兖州煤业股份有限公司 | The electric supply installation of getting working face sensor |
| CN105391160A (en) * | 2015-12-28 | 2016-03-09 | 合肥金新允电子技术有限公司 | Double power supply intelligent switching system |
| CN105391160B (en) * | 2015-12-28 | 2018-08-31 | 合肥金新允电子技术有限公司 | A kind of double-power intelligent switching system |
| CN109462273A (en) * | 2018-12-21 | 2019-03-12 | 江苏金博途科技有限公司 | A kind of mining flameproof dual-power switching control box |
| CN112928903A (en) * | 2019-12-05 | 2021-06-08 | 漳州灿坤实业有限公司 | Wide voltage input circuit, baking tray, ironing device and electric hair drier |
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|---|---|
| CN102684295B (en) | 2014-04-16 |
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Address after: 206, Comprehensive Service Building, Jinan (Mingshui) Automobile Manufacturing Industrial Park, Zaoyuan Street, Zhangqiu District, Jinan City, Shandong Province, 250200 Patentee after: JINAN JIAHONG TECHNOLOGY Co.,Ltd. Address before: Room 1408, Rongji Building, No. 168 Huayuan Road, Licheng District, Jinan City, Shandong Province, 250000 Patentee before: JINAN JIAHONG TECHNOLOGY Co.,Ltd. |
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