CN208257494U - A kind of the emergency lighting power circuit and accident lighting system of duration - Google Patents
A kind of the emergency lighting power circuit and accident lighting system of duration Download PDFInfo
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- CN208257494U CN208257494U CN201820821097.6U CN201820821097U CN208257494U CN 208257494 U CN208257494 U CN 208257494U CN 201820821097 U CN201820821097 U CN 201820821097U CN 208257494 U CN208257494 U CN 208257494U
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- Prior art keywords
- intermediate relay
- power supply
- direct current
- power
- relay
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Abstract
The utility model relates to the emergency lighting power circuit and accident lighting system of a kind of duration, which includes AC power source, DC power supply and two AC intermediate relays and a direct current intermediate relay.The switching of dual power supply is realized using three intermediate relays, under normal circumstances, AC power source is powered, and the control coil of the first AC intermediate relay obtains electric, its normally opened contact closure, the control coil of second AC intermediate relay obtains electric, normally opened contact closure, AC power source power supply, simultaneously, the normally-closed contact of first AC intermediate relay disconnects, and the control coil power loss of direct current intermediate relay, DC power supply can not export electric energy.Therefore, when AC power failure, DC power supply power supply is realized by circuit connecting relation.Moreover, the power circuit can be realized the power switching of AC power source and DC power supply, no matter realize can provide power supply under communicational aspects or under DC case, meet power demands.
Description
Technical field
The utility model relates to the emergency lighting power circuits and accident lighting system of a kind of duration.
Background technique
Emergency lighting for Maintenance and Repair, continues important work to break down in normal illumination or when accident
Make or safe passing provides the electric lighting of lighting condition.So emergency lighting is extremely important in people's daily life
, indispensable communal facility.
In order to realize that the lasting sex work of emergency lighting, the power supply of emergency lighting need to be dual power supply switching control electricity
The switching of backup power source and common power supply is realized in source, when common power failure, in-put of spare power supply.Authorization Notice No. is
The Chinese patent document of CN205846845U discloses a kind of switchgear and provides cutting automatically for operation power and external operation power for oneself
Changing device, the switching control for dual power supply.A relay is pertained only in the automatic switching control equipment, passes through the normal of the relay
It opens contact and normally-closed contact realizes the switching of dual power supply, still, when event occur in the normally opened contact or normally-closed contact of the relay
When barrier, entire switching device just cannot achieve the switching of dual power supply, therefore, only carry out cutting for dual power supply using a relay
It changes, control reliability is lower.
Utility model content
The purpose of the utility model is to provide a kind of emergency lighting power circuits of duration, only utilize one to solve
Relay carries out the switching of dual power supply, the lower problem of control reliability.The utility model provides a kind of thing of duration simultaneously
Therefore lighting system.
To achieve the above object, the utility model includes following technical scheme.
A kind of emergency lighting power circuit of duration, including AC power source, DC power supply and the intermediate relay of two exchanges
Device, a direct current intermediate relay and electric energy output end, AC power source output connection the first AC intermediate relay control
Branch, string sets the control coil of the first AC intermediate relay on the first AC intermediate relay controlling brancher, and described the
One AC intermediate relay controlling brancher is in parallel with the second AC intermediate relay controlling brancher, and described second exchanges intermediate relay
String is equipped with the normally opened contact of the first AC intermediate relay and the control coil of the second AC intermediate relay on device controlling brancher,
String sets the normally opened of second AC intermediate relay in connection line between the AC power source and the electric energy output end
Contact；The DC power supply, which exports, connects direct current intermediate relay controlling brancher, on the direct current intermediate relay controlling brancher
String set direct current intermediate relay control coil and the first AC intermediate relay normally-closed contact, the DC power supply with it is described
String sets the normally opened contact of the direct current intermediate relay in connection line between electric energy output end.
Three intermediate relays involved in circuit realize the switching of dual power supply, normal condition using three intermediate relays
Under, AC power source power supply, the control coil of the first AC intermediate relay obtains electric, normally opened contact closure, and the second exchange is intermediate
The control coil of relay obtain it is electric, normally opened contact closure, AC power source power supply, meanwhile, the first AC intermediate relay it is normal
Closed contact disconnects, and the control coil power loss of direct current intermediate relay, DC power supply can not export electric energy.Work as AC power failure
When, DC power supply power supply is realized by circuit connecting relation.So by three intermediate relays can be realized dual power supply can
By switching control, it is higher to control reliability.Moreover, the power circuit can be realized AC power source and DC power supply for cutting
It changes, no matter realize can provide power supply under communicational aspects or under DC case, meet power demands.
Further, also string is equipped with the direct current intermediate relay on the second AC intermediate relay controlling brancher
Normally-closed contact, the also string normally closed touching that is equipped with second AC intermediate relay on the direct current intermediate relay controlling brancher
Point.By the normally-closed contact of direct current intermediate relay and the normally-closed contact realization AC power source of the second AC intermediate relay and directly
The power supply in galvanic electricity source interlocks, and guarantees single power supply power supply.
Further, the output end of the AC power source is provided with AC circuit breaker, and the output end of the DC power supply is set
It is equipped with dc circuit breaker.
A kind of accident lighting system of duration, including power circuit and lighting apparatus, the power circuit include exchange
Power supply, DC power supply and two AC intermediate relays, a direct current intermediate relay and electric energy output end, the AC power source
Output connects the first AC intermediate relay controlling brancher, and string sets the first friendship on the first AC intermediate relay controlling brancher
The control coil of intermediate relay is flowed, the first AC intermediate relay controlling brancher and the second AC intermediate relay control
Branch circuit parallel connection, on the second AC intermediate relay controlling brancher string be equipped with the first AC intermediate relay normally opened contact and
The control coil of second AC intermediate relay is gone here and there in the connection line between the AC power source and the electric energy output end and is set
The normally opened contact of second AC intermediate relay；The DC power supply output connection direct current intermediate relay controlling brancher,
String sets the control coil and the first AC intermediate relay of direct current intermediate relay on the direct current intermediate relay controlling brancher
Normally-closed contact, string sets the direct current intermediate relay in the connection line between the DC power supply and the electric energy output end
Normally opened contact；The electric energy output end is for being electrically connected the lighting apparatus.
Further, also string is equipped with the direct current intermediate relay on the second AC intermediate relay controlling brancher
Normally-closed contact, the also string normally closed touching that is equipped with second AC intermediate relay on the direct current intermediate relay controlling brancher
Point.
Further, the output end of the AC power source is provided with AC circuit breaker, and the output end of the DC power supply is set
It is equipped with dc circuit breaker.
Detailed description of the invention
Fig. 1 is the emergency lighting power circuit diagram of duration.
Specific embodiment
The accident lighting system embodiment of duration
The present embodiment provides a kind of accident lighting systems of duration, emergency lighting power circuit and photograph including duration
Bright equipment, power circuit are used to provide constant current source for lighting apparatus.Therefore, the inventive point of lighting system is power circuit
Physical circuit.
The specific structure of the power circuit is illustrated below, certainly, which, which is not limited to apply, is shining
Bright equipment may be also used in other occasions for needing dual power supply to switch.
Power circuit includes AC power source, DC power supply and two AC intermediate relays, a direct current intermediate relay
And electric energy output end, as shown in Figure 1, the alternating current that AC power source provides is specially AC220V, and in the present embodiment, AC power source packet
Including alternating current input power supplying terminal L and N, the direct current that DC power supply provides is specially DC220V, in the present embodiment, DC power supply packet
Include direct-current input power supplying terminal DY+ and DY-.In two AC intermediate relays, the first AC intermediate relay is relay KA,
Second AC intermediate relay be relay ZJ1, direct current intermediate relay be relay ZJ2, electric energy output end include S01 and
S02 power output terminal, for for being electrically connected lighting apparatus.
AC power source output the first AC intermediate relay controlling brancher of connection, the first AC intermediate relay controlling brancher
The upper control coil for setting relay KA, the first AC intermediate relay controlling brancher and the second AC intermediate relay control branch of going here and there
Road is in parallel, the control of normally opened contact and relay ZJ1 of the string equipped with relay KA on the second AC intermediate relay controlling brancher
Coil, string sets the normally opened contact of relay ZJ1 in the connection line between AC power source and electric energy output end, as shown in Figure 1.Directly
The output of galvanic electricity source connects direct current intermediate relay controlling brancher, and string sets relay ZJ2's on direct current intermediate relay controlling brancher
The normally-closed contact of control coil and relay KA, string sets relay in the connection line between DC power supply and electric energy output end
The normally opened contact of ZJ2, as shown in Figure 1.
Further, in order to realize electrical interlocks, also string is equipped with relay on the second AC intermediate relay controlling brancher
The normally-closed contact of ZJ2, the also string normally-closed contact that is equipped with relay ZJ1 on direct current intermediate relay controlling brancher.
Further, the output end of AC power source is provided with AC circuit breaker JK, and the output end of DC power supply is provided with directly
Breaker ZK is flowed, realizes route protection.AC circuit breaker JK and dc circuit breaker ZK is miniature circuit breaker.
In the power circuit, AC power source is common power supply, restarts DC power supply when not having AC power source to power.
When AC power source is normal, i.e. the end of incoming cables of AC circuit breaker JK there are when alternating current, the control coil of relay KA obtain it is electric, after
The normally opened contact of electric appliance KA is closed, and the control coil of relay ZJ1 obtains electric, the normally opened contact closure of relay ZJ1, AC power source
It is connected to output terminal S01, S02 by the normally opened contact of relay ZJ1, electric energy output end exports alternating current.Meanwhile relay KA
Normally-closed contact disconnect, the control coil power loss of relay ZJ2, the normally opened contact of relay ZJ2 disconnects, and DC power supply does not provide
Direct current.
After AC power source loses, the normally opened contact of the control coil power loss of relay KA, relay KA is disconnected, relay
The normally opened contact of the control coil power loss of ZJ1, relay ZJ1 disconnects.Meanwhile the normally-closed contact closure of relay ZJ1, relay
The normally-closed contact of KA is closed, and the control coil of relay ZJ2 obtains electric, and the normally opened contact closure of relay ZJ2, DC power supply passes through
The normally opened contact of relay ZJ2 is connected to output terminal S01, S02, and electric energy output end exports direct current.It is thereby achieved that no matter
Power supply can be provided to emergency lighting equipment under communicational aspects or under DC case, therefore, lighting apparatus is to exchange
In the case of and DC case under the equipment that can run.
Duration power circuit provided in this embodiment solves after AC power source loses due to influence emergency lighting normal
The problem of operation, avoids unnecessary economic loss and human safety issues, moreover, solving by three intermediate relays
The problem of former single power supply, has many advantages, such as that low cost, high quality, stability are strong, while meeting the originals such as safe operation, practical
Then.
Specific embodiment is presented above, but the utility model is not limited to described embodiment.This is practical
Novel basic ideas are above-mentioned basic scheme, for those of ordinary skill in the art, introduction according to the present utility model,
The model, formula, parameter for designing various modifications do not need to spend creative work.The principles of the present invention are not being departed from
The protection scope of the utility model is still fallen with the change, modification, replacement and modification carried out in the case where spirit to embodiment
It is interior.
The emergency lighting power circuit embodiment of duration
The present embodiment provides a kind of emergency lighting power circuit of duration, the power supply power supply can be used as one it is independent
Part is protected, moreover, the application of the power circuit is not only lighting area, can also be other field, such as
Dual power supply switching control in switchgear.It is described in detail since the power circuit has given in the above system embodiment,
The present embodiment just no longer illustrates.
Claims (6)
1. a kind of emergency lighting power circuit of duration, which is characterized in that including AC power source, DC power supply and two exchanges
Intermediate relay, a direct current intermediate relay and electric energy output end, AC power source output the first exchange of connection it is intermediate after
Electrical equipment control branch, string sets the control line of the first AC intermediate relay on the first AC intermediate relay controlling brancher
Circle, the first AC intermediate relay controlling brancher is in parallel with the second AC intermediate relay controlling brancher, and described second hands over
Flow normally opened contact and the second AC intermediate relay that string on intermediate relay controlling brancher is equipped with the first AC intermediate relay
Control coil, in the connection line between the AC power source and the electric energy output end string set second exchange it is intermediate after
The normally opened contact of electric appliance；The DC power supply output connection direct current intermediate relay controlling brancher, the direct current intermediate relay
String sets the control coil of direct current intermediate relay and the normally-closed contact of the first AC intermediate relay, the direct current on controlling brancher
String sets the normally opened contact of the direct current intermediate relay in connection line between power supply and the electric energy output end.
2. the emergency lighting power circuit of duration according to claim 1, which is characterized in that second exchange is intermediate
Also normally-closed contact of the string equipped with the direct current intermediate relay, the direct current intermediate relay control branch on relay controlling brancher
Road also string is equipped with the normally-closed contact of second AC intermediate relay.
3. the emergency lighting power circuit of duration according to claim 1 or 2, which is characterized in that the AC power source
Output end be provided with AC circuit breaker, the output end of the DC power supply is provided with dc circuit breaker.
4. a kind of accident lighting system of duration, which is characterized in that including power circuit and lighting apparatus, the power circuit
It is described including AC power source, DC power supply and two AC intermediate relays, a direct current intermediate relay and electric energy output end
AC power source output connects the first AC intermediate relay controlling brancher, goes here and there on the first AC intermediate relay controlling brancher
If the control coil of the first AC intermediate relay, the first AC intermediate relay controlling brancher and the second exchange it is intermediate after
Electrical equipment control branch circuit parallel connection, string is equipped with the normal of the first AC intermediate relay on the second AC intermediate relay controlling brancher
Open the control coil of contact and the second AC intermediate relay, the connecting line between the AC power source and the electric energy output end
Road string sets the normally opened contact of second AC intermediate relay；The DC power supply output connection direct current intermediate relay control
Branch processed, on the direct current intermediate relay controlling brancher string set direct current intermediate relay control coil and the first exchange it is intermediate
The normally-closed contact of relay is gone here and there in the connection line between the DC power supply and the electric energy output end and is set among the direct current
The normally opened contact of relay；The electric energy output end is for being electrically connected the lighting apparatus.
5. the accident lighting system of duration according to claim 4, which is characterized in that described second exchanges intermediate relay
The also string normally-closed contact that is equipped with the direct current intermediate relay on device controlling brancher, on the direct current intermediate relay controlling brancher
Also normally-closed contact of the string equipped with second AC intermediate relay.
6. the accident lighting system of duration according to claim 4 or 5, which is characterized in that the AC power source it is defeated
Outlet is provided with AC circuit breaker, and the output end of the DC power supply is provided with dc circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820821097.6U CN208257494U (en) | 2018-05-29 | 2018-05-29 | A kind of the emergency lighting power circuit and accident lighting system of duration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820821097.6U CN208257494U (en) | 2018-05-29 | 2018-05-29 | A kind of the emergency lighting power circuit and accident lighting system of duration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208257494U true CN208257494U (en) | 2018-12-18 |
Family
ID=64651738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820821097.6U Expired - Fee Related CN208257494U (en) | 2018-05-29 | 2018-05-29 | A kind of the emergency lighting power circuit and accident lighting system of duration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208257494U (en) |
-
2018
- 2018-05-29 CN CN201820821097.6U patent/CN208257494U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181218 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |