CN202374033U - Automatic switching device for standby power supply - Google Patents
Automatic switching device for standby power supply Download PDFInfo
- Publication number
- CN202374033U CN202374033U CN2011204566439U CN201120456643U CN202374033U CN 202374033 U CN202374033 U CN 202374033U CN 2011204566439 U CN2011204566439 U CN 2011204566439U CN 201120456643 U CN201120456643 U CN 201120456643U CN 202374033 U CN202374033 U CN 202374033U
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- Prior art keywords
- power supply
- main
- contactor
- auxiliary relay
- relay
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Stand-By Power Supply Arrangements (AREA)
Abstract
The utility model discloses an automatic switching device for a standby power supply. A main power supply and the standby power supply are respectively connected with a power wire inlet end of a load through a main isolating switch, a main alternating current contactor, a standby isolating switch and a standby alternating current contactor in sequence. The automatic switching device comprises a time relay, a first intermediate relay, a second intermediate relay and a third intermediate relay, wherein the second intermediate relay and the third intermediate relay are respectively connected in parallel with a main power supply control loop and a standby power supply control loop, turn-off of the main power supply can be timely discovered, the standby power supply can be automatically switched within 1 second, and the automatic switching time of the standby power supply is shortened; and the time relay, the first intermediate relay and the main power supply control loop are connected in parallel, and when the main power supply is turned on again, the main power supply can be switched in short time. By adoption of the automatic switching device for the standby power supply, the defect of long switching time caused by motor-operated automatic switching of the standby power supply in the prior art is overcome, the utilization efficiency of equipment is improved, and unnecessary production loss caused by damage to the equipment due to non-timely power supply is avoided.
Description
Technical field
The utility model relates to a kind of industrial and mining enterprises' protection power consumption equipment that is used for and causes the automatic throw-in equipment of emergency power supply of device damage because of electric power system has a power failure suddenly.
Background technology
Industrial and mining enterprises take place to adopt stand-by power supply usually because of having a power failure suddenly through regular meeting, when main electricity breaks down, drop into automatically; After main electricity is repaired, also need switch back main electricity by stand-by power supply.Traditional automatic throw-in equipment of emergency power supply adopts electric motor operated, and change-over time is long, and equipment efficiency of usage is low, because of can not in time sending electricity, usually can cause the damage of equipment, causes unnecessary loss to production.
Summary of the invention
The technical problem that the utility model will solve provide a kind of when main electricity breaks down stand-by power supply can drop into fast, and after the main electricity reparation, can switch back at short notice again main electricity automatic throw-in equipment of emergency power supply.
For solving the problems of the technologies described above; The technical scheme that the present invention taked is: a kind of automatic throw-in equipment of emergency power supply, main electricity, stand-by power supply connect the power inleting terminal of load respectively successively through main isolating switch and main A.C. contactor, subsequent use isolating switch and subsequent use A.C. contactor; It is characterized in that: said device comprises the time relay and first to the 3rd auxiliary relay; The auxiliary normally opened contact of subsequent use A.C. contactor is connected with the coil of the time relay; The timing closing normally opened contact of the time relay is connected with the coil of first auxiliary relay; The normally-closed contact of the 3rd auxiliary relay is connected with the coil of second auxiliary relay; The normally opened contact of second auxiliary relay is connected with the normally closed main contacts of subsequent use A.C. contactor and the coil of main A.C. contactor successively; End after above-mentioned four series arm parallel connections is held its another termination mid point N through the L11 that fuse connects main electricity; The coil of the 3rd auxiliary relay is connected with the normally-closed contact of second auxiliary relay and the normally-closed contact of first auxiliary relay successively; The coil of subsequent use A.C. contactor is connected with the normally closed main contacts of main A.C. contactor and the normally opened contact of the 3rd auxiliary relay successively; End after above-mentioned two series arm parallel connections is held its another termination mid point N through the L21 that fuse connects stand-by power supply.
Adopt the beneficial effect that technique scheme produced to be: to the utlity model has the voltage detecting function; Through second auxiliary relay and the 3rd auxiliary relay is parallelly connected with main power source control loop and stand-by power supply control loop respectively; Can find in time that main electricity has a power failure; Stand-by power supply can drop in 1 second automatically, had shortened the time that stand-by power supply drops into automatically; Simultaneously, adopt the time relay parallelly connected with the main power source control loop, after main electricity restores electricity, can switch back main electricity at short notice again with first auxiliary relay.The utility model has overcome traditional stand-by power supply and has dropped into automatically because of adopting electric motor operated, and the drawback that change-over time is long has improved equipment efficiency of usage; Avoid causing unnecessary loss to production because of can not in time sending electricity to cause the damage of equipment.The utility model method is convenient, simple and practical, is applicable in the low-voltage distribution system, is particularly suitable for type of production enterprise, and is particularly important for the stand-by heat power supply that uses outer net.
Description of drawings
Fig. 1 is industrial and mining enterprises' supply power modes commonly used;
Fig. 2 is the secondary control principle figure of the utility model;
Among the figure, L11-L13, main electricity; L21-L23, stand-by power supply, QF1, main isolating switch, QF2, subsequent use isolating switch; KM1, main A.C. contactor, KM2, subsequent use A.C. contactor, KT, the time relay; KA1-KA3, first to the 3rd auxiliary relay, FU1-FU2, fuse, RL, load.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation.
Shown in Figure 1 is the supply power mode that industrial and mining enterprises use always; Adopt one tunnel power supply; Main electricity L11-L13 is connected to load RL through main isolating switch QF1 and main A.C. contactor KM1 successively; Another road is in hot stand-by duty, and stand-by power supply L21-L23 is connected to load RL through subsequent use isolating switch QF2 and subsequent use A.C. contactor KM2 successively.
Shown in Figure 2 is the secondary control principle figure of the utility model.The coil of main A.C. contactor KM1 be connected between main electricity L11 and the mid point N after the normally closed main contacts KM2-1 of subsequent use A.C. contactor KM2 connects, be the main power source control loop; The coil of subsequent use A.C. contactor KM2 be connected between stand-by power supply L21 and the mid point N after the normally closed main contacts KM1-1 of main A.C. contactor KM1 connects, be the stand-by power supply control loop.The coil of the second auxiliary relay KA2 back of connecting with the normally-closed contact KA3-2 of the 3rd auxiliary relay KA3 is parallelly connected with above-mentioned main power source control loop, and the normally opened contact KA2-1 of the second auxiliary relay KA2 into above-mentioned main power source control loop of connecting; The coil of the 3rd auxiliary relay KA3 back of connecting with the normally-closed contact KA2-2 of the second auxiliary relay KA2 is parallelly connected with above-mentioned stand-by power supply control loop, and the normally opened contact KA3-1 of the 3rd auxiliary relay KA3 into above-mentioned stand-by power supply control loop of connecting; Like this, the second auxiliary relay KA2 and the 3rd auxiliary relay KA3 form voltage detection unit, play the effect that detects main electricity and stand-by power supply voltage respectively.
Simultaneously; It is parallelly connected after the coil of time relay KT is connected with the auxiliary normally opened contact KM2-2 of subsequent use A.C. contactor KM2 with above-mentioned main power source control loop; Parallelly connected after the coil of the first auxiliary relay KA1 is connected with the timing closing normally opened contact KT-1 of time relay KT with above-mentioned main power source control loop, and the normally-closed contact KA1-1 of the first auxiliary relay KA1 connects into, and the coil of the 3rd auxiliary relay KA3 belongs to branch road.This part circuit plays the effect of the main electricity that when main electricity recovers, automaticallyes switch back.
Use the main electricity power supply during operate as normal, stand-by power supply is inoperative; When main electricity broke down, the second auxiliary relay KA2 detected the change in voltage at main electricity two ends, thereby the electric current of its coil of flowing through reduces dead electricity; Its normally opened contact KA2-1 is by being closed into disconnection, and its normally-closed contact KA2-2 is by being disconnected to closure, so; Main A.C. contactor KM1 breaks off; The 3rd auxiliary relay KA3 energising simultaneously, subsequent use A.C. contactor KM2 is closed immediately, thus main electricity and stand-by power supply are realized switching fast; Stand-by power supply can drop into automatically, makes the current supply circuit normal power supply.
When main electricity restores electricity, because the auxiliary normally opened contact KM2-2 of subsequent use A.C. contactor KM2 is closed at this moment, the coil electricity of time relay KT; Pass through the delay of short time again, the coil electricity of the first auxiliary relay KA1, its normally-closed contact KA1-1 is by being closed into disconnection; The coil losing electricity of the 3rd auxiliary relay KA3, its normally opened contact KA3-1 is by being closed into disconnection, and its normally-closed contact KA3-2 is by being disconnected to closure; So subsequent use A.C. contactor KM2 dead electricity is broken off, the second auxiliary relay KA2 gets electric adhesive; Thereby main A.C. contactor KM1 is closed, switches back the main electricity power supply.
Claims (1)
1. automatic throw-in equipment of emergency power supply, main electricity, stand-by power supply connect the power inleting terminal of load (RL) respectively successively through main isolating switch (QF1) and main A.C. contactor (KM1), subsequent use isolating switch (QF2) and subsequent use A.C. contactor (KM2);
It is characterized in that: said device comprises the time relay (KT) and first to the 3rd auxiliary relay (KA1-KA3); The auxiliary normally opened contact (KM2-2) of subsequent use A.C. contactor (KM2) is connected with the coil of the time relay (KT); The timing closing normally opened contact (KT-1) of the time relay (KT) is connected with the coil of first auxiliary relay (KA1); The normally-closed contact (KA3-2) of the 3rd auxiliary relay (KA3) is connected with the coil of second auxiliary relay (KA2); The normally opened contact (KA2-1) of second auxiliary relay (KA2) is connected with the normally closed main contacts (KM2-1) of subsequent use A.C. contactor (KM2) and the coil of main A.C. contactor (KM1) successively; End after above-mentioned four series arm parallel connections is held its another termination mid point N through the L11 that fuse (FU1) connects main electricity; The coil of the 3rd auxiliary relay (KA3) is connected with the normally-closed contact (KA2-2) of second auxiliary relay (KA2) and the normally-closed contact (KA1-1) of first auxiliary relay (KA1) successively; The coil of subsequent use A.C. contactor (KM2) is connected with the normally closed main contacts (KM1-1) of main A.C. contactor (KM1) and the normally opened contact (KA3-1) of the 3rd auxiliary relay (KA3) successively; End after above-mentioned two series arm parallel connections is held its another termination mid point N through the L21 that fuse (FU2) connects stand-by power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204566439U CN202374033U (en) | 2011-11-17 | 2011-11-17 | Automatic switching device for standby power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204566439U CN202374033U (en) | 2011-11-17 | 2011-11-17 | Automatic switching device for standby power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202374033U true CN202374033U (en) | 2012-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204566439U Expired - Fee Related CN202374033U (en) | 2011-11-17 | 2011-11-17 | Automatic switching device for standby power supply |
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| Country | Link |
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| CN (1) | CN202374033U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103986163A (en) * | 2014-05-29 | 2014-08-13 | 国家电网公司 | System and method for restraining induced current and voltage between double-circuit lines on same tower |
| CN104135065A (en) * | 2014-08-11 | 2014-11-05 | 渤海大学 | Double-circuit power supply self-resetting control device and method for large-scale hotel with emergency power supply |
| CN104779692A (en) * | 2015-03-25 | 2015-07-15 | 安徽智瑞电气有限公司 | Emergency lighting change-over system |
| CN108767970A (en) * | 2018-05-29 | 2018-11-06 | 河南森源电气股份有限公司 | A kind of dual power supply automatic bus |
| CN109066959A (en) * | 2018-08-22 | 2018-12-21 | 四川川润液压润滑设备有限公司 | A kind of control method of lubricating system exchange dual power supply contactor switching |
| CN110601352A (en) * | 2019-10-11 | 2019-12-20 | 云南大红山管道有限公司 | Automatic switching device for main and standby power supplies of lubricating system in long-distance large-pipe-diameter water regulating system and implementation method |
-
2011
- 2011-11-17 CN CN2011204566439U patent/CN202374033U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103986163A (en) * | 2014-05-29 | 2014-08-13 | 国家电网公司 | System and method for restraining induced current and voltage between double-circuit lines on same tower |
| CN104135065A (en) * | 2014-08-11 | 2014-11-05 | 渤海大学 | Double-circuit power supply self-resetting control device and method for large-scale hotel with emergency power supply |
| CN104779692A (en) * | 2015-03-25 | 2015-07-15 | 安徽智瑞电气有限公司 | Emergency lighting change-over system |
| CN108767970A (en) * | 2018-05-29 | 2018-11-06 | 河南森源电气股份有限公司 | A kind of dual power supply automatic bus |
| CN109066959A (en) * | 2018-08-22 | 2018-12-21 | 四川川润液压润滑设备有限公司 | A kind of control method of lubricating system exchange dual power supply contactor switching |
| CN110601352A (en) * | 2019-10-11 | 2019-12-20 | 云南大红山管道有限公司 | Automatic switching device for main and standby power supplies of lubricating system in long-distance large-pipe-diameter water regulating system and implementation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20171117 |
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| CF01 | Termination of patent right due to non-payment of annual fee |