CN203589832U - Alternating current power supply switching device - Google Patents
Alternating current power supply switching device Download PDFInfo
- Publication number
- CN203589832U CN203589832U CN201320733573.6U CN201320733573U CN203589832U CN 203589832 U CN203589832 U CN 203589832U CN 201320733573 U CN201320733573 U CN 201320733573U CN 203589832 U CN203589832 U CN 203589832U
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- power supply
- contactor
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- main power
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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 relates to an alternating current power supply switching device, which comprises a main power supply and an emergency power supply and is characterized in that the main power supply is provided with a main power supply contactor, the emergency power supply is provided with an emergency power supply contactor, and a main power supply and emergency power supply circuit is provided with a switch control device used for switching the main power supply and the emergency power supply to operate independently; a circuit between the switch control device and the main power supply contactor or a circuit between the switch control device and the emergency power supply contactor is provided with an alarm device. The device not only can realize full-automatic and uninterrupted switching between the main power supply and the emergency power supply and directly switch to an emergency power supply mode if the main power supply breaks down, but also enables maintenance staff to know the power supply state visually, thereby reducing the maintenance workload, improving the working efficiency of a power plant, and saving he economic cost of the plant.
Description
Technical field
The utility model relates to the switching device shifter of a kind of AC power in power industry, particularly a kind of main for alternating current circuit and the interlocking of standby alternating current circuit and uninterrupted switching device shifter.
Background technology
At present, for improving the job stability of control system and realizing Long-distance Control, all can use computer to carry out Monitoring and Controlling to powered operation state in power plant in large power plant, therefore the computer in power plant is higher to the stability requirement of continued power.And industrial control computer is generally designed to single channel Power supply, once power-off, can cause whole control system to lose supervision, if do not find in time, will cause the accidents such as fire, chaser, to production, bring very large hidden danger, therefore provide multiple power supplies to become the demand of field control system in power plant.
The mutual cutting apparatus of general power supply adopts to exchange and becomes direct current, and then becomes interchange, system complexity, and power conversion element is more, and arbitrary element fault all can cause the system failure, easily breaks down.So, design and can automatically switch, guarantee that the circuit that still can normally move under the power failure of single channel power-supply device Yi road seems particularly important.
Application number is that 201120516430.0 Chinese patent discloses a kind of power switching device for urban lighting monitoring system, comprise clock controller, auxiliary relay KA, the coil of described auxiliary relay KA connects main power supply, normally opened contact one end of auxiliary relay KA connects main power supply, and the other end connects the coil of A.C. contactor KM; Clock controller connects normally-closed contact one end of auxiliary relay KA, and the normally-closed contact other end of auxiliary relay KA connects the coil of A.C. contactor KM; Main power supply and available power supply are realized the electrical interlocks between main incense power supply source by the contact of auxiliary relay KA.This device has been stopped two possibilities that power supply closes a floodgate simultaneously, guarantees to only have all the time a power supply to power to equipment, has improved the normal reliability opening and closing of lighting apparatus.Although this device has been introduced auxiliary relay and realized the switching of mains lighting supply, in circuit maintenance process, if staff need to check power supply state, this device is very not directly perceived.
Given this, the utility model is proposed.
Utility model content
In order to realize the purpose of this utility model, the technical scheme of employing is:
A kind of switching device shifter of AC power, comprise main power supply, stand-by power supply, it is characterized in that, main power supply contactor is set on described main power supply, stand-by power supply contactor is set on stand-by power supply, the switching control working alone in order to switch main power supply and stand-by power supply is set on described main power supply and stand-by power supply circuit; On circuit on circuit between described switching control and main power supply contactor or between switching control and stand-by power supply contactor, warning device is set.
Further, porch and the exit of described main power supply contactor circuit arrange respectively air switch, and porch and the exit of described stand-by power supply contactor circuit arrange respectively air switch.
Further, described switching control is relay, comprise control coil, normally opened contact and normally-closed contact, described control coil is connected with main power supply, described normally opened contact one end connects main power supply, the other end connects the coil of main power supply contactor, and one end of described normally-closed contact connects stand-by power supply, and the other end is connected with the coil of stand-by power supply contactor.
Further, described warning device is arranged between normally-closed contact and the coil of stand-by power supply contactor.
Further, described warning device is warning lamp or audible alarm unit.
Further, described relay is electromagnetic relay.
Further, described main power supply contactor is alternating electromagnetic contactor, and described stand-by power supply contactor is alternating electromagnetic contactor.
Further, described power switch control device is contactor, described contactor comprises solenoid, main contacts, often opens auxiliary contact and normally closed auxiliary contact, the solenoid of described contactor connects main power supply, described main contacts or often open auxiliary contact one end connect main power supply, the other end connects the coil of main power supply contactor, and one end of described normally closed auxiliary contact connects stand-by power supply, and the other end connects the coil of stand-by power supply contactor.
Further, described contactor is alternating electromagnetic contactor.
Below the technical solution of the utility model is made further explanation.
The switching device shifter of AC power described in the utility model is mainly used in the equipment that needs uninterrupted power supply, as the control system in large power plant, control system mainly relies on computer to realize at present, once single service fault can cause greater loss, this switching device shifter can be realized two-way power supply and automatically switch, and guarantees that computer under any circumstance can normally work.The switching device shifter of this AC power mainly comprises main power supply and stand-by power supply, on the circuit of main power supply, be connected with main power supply contactor, on the circuit of stand-by power supply, be connected with stand-by power supply contactor, switching control is set between main power supply and main power supply contactor to realize main power supply and stand-by power supply independence interlocking work, for making maintenance work personnel conveniently check electric power thus supplied, on the circuit of main power supply or stand-by power supply, warning device is set.For make warning device fast, effectively send alarm signal, on the circuit on the circuit between switching control and main power supply contactor or between switching control and stand-by power supply contactor, warning device is set.
Switching control described in the utility model is relay, described relay is electromagnetic relay, electromagnetic relay electromagnetic relay is mainly comprised of electromagnet, control coil, armature, spring leaf, normally opened contact and normally-closed contact etc., wherein, normally opened contact and normally-closed contact are linkage interlocked relation.Relay described in the utility model arranges on main power supply, the control coil of relay is connected with main power supply, one end of normally opened contact is connected with main power supply, the other end is connected with the coil of main power supply contactor, one end of normally-closed contact is connected with stand-by power supply, and the other end is connected with the coil of stand-by power supply contactor.When under normal condition, main power supply is power supply, the control coil of relay has electric current to pass through, and the electromagnet of relay can produce galvanomagnetic effect, and armature will overcome the pulling force of return spring and inhale to iron core under the effect of electromagnetic attracting force, make normally opened contact closure, normally-closed contact is opened.Now, main power supply, to the coil power supply of main power supply contactor, makes main power supply contactor closure, and load equipment is opened.Once main power supply breaks down, now, the control coil dead electricity of relay, normally opened contact stays open state, normally-closed contact closure, now stand-by power supply is to the coil power supply of stand-by power supply contactor, stand-by power supply controller closure, load equipment is normally worked.
Preferably, warning device is arranged on stand-by power supply, and warning device can be audible alarm unit or warning lamp.Warning device described in the utility model is arranged between normally-closed contact and stand-by circuit contactor, and the Main Function of warning device is can make maintenance work personnel very intuitively observably observe to be main power supply or stand-by power supply in power supply actually.If main power supply is in power supply, warning device can not be reported to the police, if main power supply fault, stand-by power supply power supply, warning device is opened.AC power switching device shifter described in the utility model is that only when main power supply breaks down, stand-by power supply just can be opened, so warning device is arranged on stand-by power supply circuit take main power supply as main powering mode.
On the entrance circuit of main power supply contactor described in the utility model and stand-by power supply contactor and egress line, be respectively arranged with air switch.The Main Function of contactor intake air switch is for checking whether entrance contactor has electricity, by the break-make of intake air switch, realize manual switchover power transfer device simultaneously, contactor outlet air on-off action is mainly used in the control to out-put supply, carrys out the power load of control contactor outlet by break-make outlet air switch.
The switching device shifter of AC power described in the utility model is take main power supply as main single service device, at main power supply and stand-by power supply all in normal situation, main power supply is power supply, once main power supply breaks down, this switching device shifter can automatically switch to stand-by power supply, main power supply fault after maintenance disappears, and this switching device shifter can automatically switch to main power supply again.This device can not only be realized automatically and uninterruptedly switching between main power supply and stand-by power supply, and can make maintenance work personnel understand very intuitively power supply state.
Because the operation principle of contactor is similar to relay, so relay described in the utility model can replace with contactor, described contactor is electromagnetic relay.
Accompanying drawing explanation
Fig. 1 is electrical connection schematic diagram of the present utility model;
Fig. 2 is operation principle schematic diagram of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, but not as to restriction of the present utility model.
As shown in Figure 1, a kind of switching device shifter of AC power, comprise main power supply, stand-by power supply, main power supply contactor 1 is set on main power supply, stand-by power supply contactor 2 is set on stand-by power supply, described main power supply contactor 1 and stand-by power supply contactor 2 are alternating electromagnetic contactor, switching control is set between main power supply and main power supply contactor 1 can linkage interlockedly work alone main power supply and stand-by power supply, for making maintenance work personnel conveniently check electric power thus supplied, on the circuit of main power supply or stand-by power supply, warning device is set.For make warning device fast, effectively send alarm signal, on the circuit on the circuit between switching control and main power supply contactor 1 or between switching control and stand-by power supply contactor 2, warning device is set.This switching control is relay, this relay is electromagnetic relay, comprise control coil, normally open contact and normally closed interlock, the control coil of relay is connected with main power supply, one end of normally opened contact is connected with main power supply, the other end is connected with the coil of main power supply contactor, and one end of normally-closed contact is connected with stand-by power supply, and the other end is connected with the coil of stand-by power supply contactor.For ease of staff's maintenance and control circuit, on the entrance circuit of main power supply contactor 1 and stand-by power supply contactor 2 and egress line, be respectively arranged with air switch, the air switch of porch can be realized manual switchover circuit, and the air switch in exit can be controlled computer power load.Because AC power switching device shifter is that only when main power supply breaks down, stand-by power supply just can be opened, so warning device is arranged between normally-closed contact and the coil of stand-by power supply contactor take main power supply as main powering mode.Like this, once stand-by power supply starts, warning device will be opened warning.Described warning device is audible alarm unit or warning lamp.
Control system in large power plant is all to rely on the control of computer realization automatic remote, so will accomplish uninterrupted power supply for the power supply of computer.Arranging of switching device shifter described in the present embodiment realized take main power supply as main powering mode.Under main power supply normal condition, main power supply is to the control coil power supply of relay, control coil has electric current to pass through, the electromagnet of relay can produce galvanomagnetic effect, armature will overcome the pulling force of return spring and inhale to iron core under the effect of electromagnetic attracting force, make normally opened contact closure, normally-closed contact is opened.Now, main power supply, to the coil power supply of main power supply contactor 1, makes the closing of contact of main power supply contactor 1, and computer can normally be worked.
If main power supply breaks down, now, the control coil dead electricity of relay, normally opened contact is opened, normally-closed contact closure, and now stand-by power supply is to the coil power supply of stand-by power supply contactor 2, stand-by power supply controller 2 closures, warning lamp lights, and now stand-by power supply is computer power supply.Maintainer can recognize whether opened stand-by power supply very intuitively by warning lamp, and then the circuit of main power supply is overhauled.Once main, for circuit, repair, the control coil of relay regains electric current, and it is computer power supply that this device switches to again main power supply.
Because the operation principle of contactor and relay is similar, so the relay described in the present embodiment can replace with contactor.
The uninterrupted automatic remote that this device has been realized main power supply and stand-by power supply switches, and then improved the stability of control system work in power plant, and this device makes staff recognize very intuitively power supply state, reduced maintenance load, improve staff's operating efficiency, and then reduced the Financial cost of power plant.
Embodiment in above-described embodiment can further combine or replace; and embodiment is described preferred embodiment of the present utility model; not design of the present utility model and scope are limited; do not departing under the prerequisite of the utility model design philosophy; the various changes and modifications that in this area, professional and technical personnel makes the technical solution of the utility model, all belong to protection range of the present utility model.
Claims (9)
1. the switching device shifter of an AC power, comprise main power supply, stand-by power supply, it is characterized in that, main power supply contactor (1) is set on described main power supply, stand-by power supply contactor (2) is set on stand-by power supply, the switching control working alone in order to switch main power supply and stand-by power supply is set on described main power supply and stand-by power supply circuit; On circuit on circuit between described switching control and main power supply contactor (1) or between switching control and stand-by power supply contactor (2), warning device is set.
2. the switching device shifter of a kind of AC power according to claim 1, it is characterized in that, porch and the exit of described main power supply contactor (1) circuit arrange respectively air switch, and porch and the exit of described stand-by power supply contactor (2) circuit arrange respectively air switch.
3. the switching device shifter of a kind of AC power according to claim 1, it is characterized in that, described switching control is relay, comprise control coil, normally opened contact and normally-closed contact, described control coil is connected with main power supply, and described normally opened contact one end connects main power supply, and the other end connects the coil of main power supply contactor (1), one end of described normally-closed contact connects stand-by power supply, and the other end is connected with the coil of stand-by power supply contactor (2).
4. the switching device shifter of a kind of AC power according to claim 3, is characterized in that, described warning device is arranged between normally-closed contact and the coil of stand-by power supply contactor.
5. the switching device shifter of a kind of AC power according to claim 4, is characterized in that, described warning device is warning lamp or audible alarm unit.
6. the switching device shifter of a kind of AC power according to claim 3, is characterized in that, described relay is electromagnetic relay.
7. according to the switching device shifter of a kind of AC power described in claim 1-3 any one, it is characterized in that, described main power supply contactor (1) is alternating electromagnetic contactor, and described stand-by power supply contactor (2) is alternating electromagnetic contactor.
8. the switching device shifter of a kind of AC power according to claim 1, it is characterized in that, described switching control is contactor, described contactor comprises solenoid, main contacts, often opens auxiliary contact and normally closed auxiliary contact, the solenoid of described contactor connects main power supply, described main contacts or often open auxiliary contact one end connect main power supply, the other end connects the coil of main power supply contactor (1), one end of described normally closed auxiliary contact connects stand-by power supply, and the other end connects the coil of stand-by power supply contactor (2).
9. the switching device shifter of a kind of AC power according to claim 8, is characterized in that, described contactor is alternating electromagnetic contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320733573.6U CN203589832U (en) | 2013-11-18 | 2013-11-18 | Alternating current power supply switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320733573.6U CN203589832U (en) | 2013-11-18 | 2013-11-18 | Alternating current power supply switching device |
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| Publication Number | Publication Date |
|---|---|
| CN203589832U true CN203589832U (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320733573.6U Expired - Fee Related CN203589832U (en) | 2013-11-18 | 2013-11-18 | Alternating current power supply switching device |
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| CN (1) | CN203589832U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106059053A (en) * | 2016-05-31 | 2016-10-26 | 广州地铁集团有限公司 | Double-power-supply automatic switching device |
| CN107516830A (en) * | 2017-08-25 | 2017-12-26 | 合肥智鼎电控自动化科技有限公司 | A kind of automatic fusing switching device of high and low voltage electric distribution equipment |
| CN107565686A (en) * | 2017-08-25 | 2018-01-09 | 合肥智鼎电控自动化科技有限公司 | A kind of automatic fusing switching device of high-low voltage electric power distribution cabinet |
| CN107623375A (en) * | 2017-08-25 | 2018-01-23 | 合肥智鼎电控自动化科技有限公司 | It is a kind of that there is the high and low voltage electric distribution equipment for not powering off maintenance |
| CN110429898A (en) * | 2019-08-15 | 2019-11-08 | 海信（山东）空调有限公司 | A kind of control method of frequency conversion equipment, device and frequency conversion equipment |
| 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 |
-
2013
- 2013-11-18 CN CN201320733573.6U patent/CN203589832U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106059053A (en) * | 2016-05-31 | 2016-10-26 | 广州地铁集团有限公司 | Double-power-supply automatic switching device |
| CN107516830A (en) * | 2017-08-25 | 2017-12-26 | 合肥智鼎电控自动化科技有限公司 | A kind of automatic fusing switching device of high and low voltage electric distribution equipment |
| CN107565686A (en) * | 2017-08-25 | 2018-01-09 | 合肥智鼎电控自动化科技有限公司 | A kind of automatic fusing switching device of high-low voltage electric power distribution cabinet |
| CN107623375A (en) * | 2017-08-25 | 2018-01-23 | 合肥智鼎电控自动化科技有限公司 | It is a kind of that there is the high and low voltage electric distribution equipment for not powering off maintenance |
| CN110429898A (en) * | 2019-08-15 | 2019-11-08 | 海信（山东）空调有限公司 | A kind of control method of frequency conversion equipment, device and frequency conversion equipment |
| 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: 20140507 Termination date: 20201118 |
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| CF01 | Termination of patent right due to non-payment of annual fee |