CN102684295B - Mining flameproof dual-power switching control box - Google Patents
Mining flameproof dual-power switching control box Download PDFInfo
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- CN102684295B CN102684295B CN201210134719.5A CN201210134719A CN102684295B CN 102684295 B CN102684295 B CN 102684295B CN 201210134719 A CN201210134719 A CN 201210134719A CN 102684295 B CN102684295 B CN 102684295B
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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 at mining electric field, relate to a kind of downhole monitoring equipment duplicate supply supply arrangement, i.e. mining explosion-proof dual-power switching controls case.
Background technology
Underground substation formula safety monitoring system substation all adopts single circuit power supply system power supply at present, although substation storage battery can guarantee more than 2 hours self discharge power supplies after electric power system has a power failure, but substation power is many and digging power supply shares, affected by digging power supply large, once mining system interruption duration exceedes more than 2 hours, Monitor Sub-Station of Less storage battery just there will be and discharges completely and cause supervisory control system locking to quit work, and substation service lifetime of accumulator is with to discharge and recharge number of times relevant, discharge and recharge frequently the capacity that can shorten storage battery, correspondingly shortened the storage battery self-powered time, totally unfavorable to safety.
Domestic have two kinds to the supply power mode of supervisory control system at present, a kind of mode is special circuit power supply, which need to be laid private cable toward down-hole from ground, although avoided the impact of down-hole mining power supply, but laying-out is long, wire diameter is larger, and voltage drop is large, still be single circuit power supply, power down phenomenon is not still resolved.Another kind of mode is exactly the underground substation single circuit power supply generally adopting at present, affected by digging power supply larger, and supervisory control system power down is frequent.More external coal mining Country Monitor systems adopt bus type more, and dedicated transformer and special circuit power supply, power more stable, and supervisory control system power down phenomenon is relatively less.
Summary of the invention
The present invention, in order to make up the deficiencies in the prior art, provides a kind of easy to use, reliable mining explosion-proof dual-power switching controls case of powering.
The present invention is achieved through the following technical solutions:
Mining explosion-proof dual-power switching controls case of the present invention, its special character is: comprise and connect the main transformer of main power source and the teaser transformer of auxiliary connection power supply, a place of the secondary output end of major and minor transformer jointly connects load through protector respectively after the secondary Control of the main relay of main power source, auxiliary power; Another place of the secondary output end of major and minor transformer connects PLC controller respectively after major and minor on/off testing circuit, PLC controller connects the input of major and minor relay, main power source break-make testing circuit is provided with the manual switchover button for switching major and minor power supply, and auxiliary power break-make testing circuit is provided with output cut-off push button.
Described main power source break-make testing circuit comprises the main rectifier bridge that connects another place of the secondary output end of main transformer through fuse, between main rectifier bridge two outputs, be connected with energy-absorbing resistance, one of them output connects PLC controller through main relay, one of another output connects PLC controller through diode, another is connected PLC controller through diode with output cut-off push button, a more manual switching push button of warp connects PLC controller; Auxiliary power break-make testing circuit comprises the secondary rectifier bridge through another place of the secondary output end of fuse auxiliary connection transformer, between secondary rectifier bridge two outputs, be connected with energy-absorbing resistance, one of them output connects PLC controller through secondary relay, one of another output connects PLC controller through diode, another is connected PLC controller through diode with output cut-off push button, then one directly connects PLC controller.
The invention has the beneficial effects as follows, easy for installation, simple to operate, safe and reliable.The mode that it combines by traditional relay control and modern advanced programmable logic controller (PLC), when guaranteeing system stable operation, has greatly reduced the complicated loaded down with trivial details wiring of equipment.This invention can complete by a programmable logic controller (PLC) judgement and the analysis of the break-make to the major and minor two-way power supply in outside, and then realizes the automatic switchover between major-minor power supply.This invention simultaneously can also, according to the difference of load equipment, be revised partial function by programming instruction, realizes Timing and the Optimal Control to load end.Finally reach reliable and stable Dual-power automatic switching, to realize the dual power supplies such as underground monitoring substation and self closing door.This invention simultaneously has manual switchover and output disconnects and work state display function, and very convenient underground work personnel grasp the operating state of this equipment and the service work to load that this equipment connects at any time.In the situation that not affecting other loaded work pieces, complete the power failure maintenance work that Monitor Sub-Station of Less and other is accessed to the load equipment of this mining explosion-proof dual-power switching controls case.
Accompanying drawing explanation
Fig. 1 is control cabinet profile front view, and Fig. 2 is control flow chart, and Fig. 3 is electrical schematic diagram.Fig. 4 is control cabinet profile rearview.
In 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.
Mining explosion-proof dual-power switching controls case of the present invention, comprise and connect the main transformer 1 of 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 jointly connects load through protector 16 respectively after the secondary relay 15 of the main relay 14 of main power source, auxiliary power is controlled; Another place of the secondary output end of major and minor transformer connects PLC controller 13 respectively after major and minor on/off testing circuit, 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 for switching 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 that connects another place of the secondary output end of main transformer 1 through fuse 3, between main rectifier bridge two outputs, be connected with energy-absorbing resistance 7, one of them output connects PLC controller 13 through main relay 14, one of another output connects PLC controller through diode 9, another is connected PLC controller through diode with output cut-off push button, a more manual switching push button 11 of warp connects PLC controller; 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, between secondary rectifier bridge two outputs, be connected with energy-absorbing resistance 8, one of them output connects PLC controller 13 through secondary relay 15, one of another output connects PLC controller through diode 10, another is connected PLC controller through diode 10 with output cut-off push button 12, then one directly connects PLC controller.
The present invention is directed to the frequent power down of underground monitoring substation and the material impact producing is set out, making full use of the existing double-cricuit supply in down-hole, utilizing modern Electrical Control Technology to design Dual-power automatic switching control cabinet.This control cabinet can be contained voltage within the scope of AC18-36V according to the voltage class of monitoring equipment under existing well, can supply with for downhole monitoring device end provides reliablely and stablely power supply, thereby overcome the frequent impact 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 of safety monitoring system is had to reliable power supply guarantee, can also press observation system, personnel location system and the main continuous power supply of elevator system to have reliable guarantee to Underground.
According to current Underground Substation, to outstation wiring situation, mostly be a feeding switch to outstation power supply, give again other equipment power supplies.When staff overhauls outstation or during other work, need to disconnect feeding switch control loop, cause other equipment except outstation power-off also to want power-off, have a strong impact on underground work efficiency 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 underground work personnel can regularly detect this equipment by manual switchover button switching major-minor power supply can normally realize handoff functionality; This equipment is connected between outstation and upper level power supply, when staff need to carry out service work to outstation, by output cut-off push button, just can disconnect the power supply of outstation, in the situation that not affecting other equipment work, complete service work, convenient and swift, improved greatly operating efficiency and fail safe.In addition, this invention is also designed with working station indicator, comprises that the indication of major-minor power work state and auxiliary power fault show, safe and reliable, operating state is very clear.
The mode that the present invention combines by traditional relay control and modern advanced programmable logic controller (PLC), when guaranteeing system stable operation, has greatly reduced the complicated loaded down with trivial details wiring of equipment.This invention can complete by a programmable logic controller (PLC) judgement and the analysis of the break-make to the major and minor two-way power supply in outside, and then realizes the automatic switchover between major-minor power supply.This invention simultaneously can also, according to the difference of load equipment, be revised partial function by programming instruction, realizes Timing and the Optimal Control to load end.Finally reach reliable and stable Dual-power automatic switching, to realize the dual power supplies such as underground monitoring substation and self closing door.This invention simultaneously has manual switchover and output disconnects and work state display function, and very convenient underground work personnel grasp the operating state of this equipment and the service work to load that this equipment connects at any time.In the situation that not affecting other loaded work pieces, complete the power failure maintenance work that Monitor Sub-Station of Less and other is accessed to the load equipment of this mining explosion-proof dual-power switching controls case.
In Fig. 3, for the transformer 1,2 of 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, another place connects the rectifying device 5,6 of control loop, wherein protects in addition the safeties 3,4 of control loop; Energy-absorbing resistance 7,8, the automatic switchover time of shortening major-minor power supply; One-way conduction diode 9,10, realizes Programmable Logic Controller 13 not power-off, 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 accesses by wiring place 17, is followed successively by major and minor loop and powers on, and equipment enters normal operating conditions.
Mining explosion-proof dual-power 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 to access major and minor two-way power supply and draw output cable to load equipment according to equipment wiring schematic diagram, then to major and minor power supply electrifying, can complete the installation wiring work to this equipment successively.After powering on, by manual switchover and output cut-off push button, operation and the function to equipment carried out test job.Whole machine installation debugging is complete.Easy for installation, simple to operate, safe and reliable.
Claims (1)
1. a mining explosion-proof dual-power switching controls case, it is characterized in that: comprise and connect the main transformer of main power source and the teaser transformer of auxiliary connection power supply, a place of the secondary output end of major and minor transformer jointly connects load through protector respectively after the secondary Control of the main relay of main power source, auxiliary power; Another place of the secondary output end of major and minor transformer connects PLC controller respectively after major and minor on/off testing circuit, PLC controller connects the input of major and minor relay, main power source break-make testing circuit is provided with the manual switchover button for switching major and minor power supply, and major and minor on/off testing circuit is provided with output cut-off push button;
Main power source break-make testing circuit comprises the main rectifier bridge that connects another place of the secondary output end of main transformer through the first fuse, between main rectifier bridge two outputs, be connected with the first energy-absorbing resistance, one of them output connects PLC controller through main relay, one of another output connects PLC controller through the first diode, another is connected PLC controller through the first diode with output cut-off push button, a more manual switching push button of warp connects PLC controller; Auxiliary power break-make testing circuit comprises the secondary rectifier bridge through another place of the secondary output end of the second fuse auxiliary connection transformer, between secondary rectifier bridge two outputs, be connected with the second energy-absorbing resistance, one of them output connects described PLC controller through secondary relay, one of another output connects PLC controller through the second diode, another is connected PLC controller through the second diode with output cut-off push button, then one directly connects PLC controller.
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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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| 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 CN102684295A (en) | 2012-09-19 |
| CN102684295B true CN102684295B (en) | 2014-04-16 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
| 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 |
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 |
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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 |
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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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