CN204947339U - The electric interlocking installation of many inlet wire many mothers low-voltage distribution systems - Google Patents
The electric interlocking installation of many inlet wire many mothers low-voltage distribution systems Download PDFInfo
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- CN204947339U CN204947339U CN201520625479.8U CN201520625479U CN204947339U CN 204947339 U CN204947339 U CN 204947339U CN 201520625479 U CN201520625479 U CN 201520625479U CN 204947339 U CN204947339 U CN 204947339U
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- switch
- inlet wire
- bus
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Abstract
The utility model discloses a kind of electric interlocking installation of many inlet wire many mothers low-voltage distribution systems, comprise multistage transmission of electricity inlet wire, every section of transmission of electricity inlet wire comprises transformer, service entrance switch, bus, described transformer, by service entrance switch connection bus, is provided with bus connection switch between the bus of adjacent power inlet wire; Each section of bus comprises A, B, C phase inlet wire and neutral line N; Described A, B, C phase inlet wire is respectively connected with the coil of the closed type relay detected for busbar voltage, and is connected to neutral line N by the coil of closed type relay; The switch of three closed type relays is connected in series, composition electric interlocking loop; Described electric interlocking loop respectively be connected the service entrance switch of this section of bus and two bus connection switches and connect.Whether there is electricity for foundation with the bus at sense switch place, then by the auxiliary contact of relaying and the under-voltage coil of switch, reciprocal interlocking is carried out to each switch.
Description
Technical field
The utility model relates to power supply technique field, particularly relates to a kind of electric interlocking installation of many inlet wire many mothers low-voltage distribution systems.
Background technology
Along with competition of market economy is fierce, the production of enterprise product and supply time are extremely urgent, cause enterprise to the demand of power supply and require more and more higher.The low-voltage distribution system of current enterprise uses the scheme of electric power of the many mothers of many buses mostly, and namely the inlet wire of N+1 platform transformer is the low-voltage distribution system of N bar bussed supply, wherein N >=2.And traditional N+1 inlet wire N mother electrical interlock principle is with the opening and closing state of sense switch for foundation, then carry out reciprocal interlocking by the auxiliary contact of switch.If but number of switches is once increase, the complexity of so interlocking and control line will become geometry multiple to increase, and cause coefficient of safety greatly to reduce.
Utility model content
For overcoming the deficiencies in the prior art, the purpose of this utility model is the electric interlocking installation of the many inlet wire many mothers low-voltage distribution systems providing a kind of structure simple, safe and reliable.
The utility model is the technical scheme solving the employing of its technical problem:
The electric interlocking installation of many inlet wire many mothers low-voltage distribution systems, comprise multistage transmission of electricity inlet wire, every section of transmission of electricity inlet wire comprises transformer, service entrance switch, bus, and described transformer, by service entrance switch connection bus, is provided with bus connection switch between the bus of adjacent power inlet wire; Each section of bus comprises A, B, C phase inlet wire and neutral line N; Described A, B, C phase inlet wire is respectively connected with the coil of the closed type relay detected for busbar voltage, and is connected to neutral line N by the coil of closed type relay; The switch of three closed type relays is connected in series, composition electric interlocking loop; Described electric interlocking loop respectively be connected the service entrance switch of this section of bus and two bus connection switches and connect; The coil of described service entrance switch is connected with inlet wire switch knob, and the coil of described service entrance switch, inlet wire switch knob, service entrance switch are connected with inlet wire and control power supply after connecting; The coil of described bus connection switch is connected with mother switch knob, and the coil of described bus connection switch, mother switch knob, bus connection switch are connected with mother and control power supply after connecting.
Further, described service entrance switch, bus connection switch adopt the frame switch being with under-voltage separating brake function.
Further, described inlet wire controls the transformer output that power supply takes from this transmission of electricity inlet wire.
Further, described mother controls arbitrary service entrance switch output that power supply takes from adjacent two sections of transmission of electricity inlet wires.
Further, described mother controls power supply and is provided with biswitch relay, and described biswitch relay comprises two-way and always keeps out one to close state of switch, and double switch connects the service entrance switch output of adjacent two sections of transmission of electricity inlet wires respectively; The coil of described biswitch relay connects arbitrary service entrance switch output of adjacent two sections of transmission of electricity inlet wires.
The beneficial effects of the utility model are:
Whether the electric interlocking installation of many inlet wire many mothers low-voltage distribution systems that the utility model adopts, have electricity for foundation with the bus at sense switch place, then carry out reciprocal interlocking by the auxiliary contact of relaying and the under-voltage coil of switch to each switch.No matter number of switches increases how many, and complexity and the control line of its interlocking all can not increase, and not only simply, but also safety, also accurately.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and example, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the circuit theory diagrams that I section bus of the present utility model connects the coil of closed type relay;
Fig. 3 is the circuit theory diagrams that II section of bus of the present utility model connects the coil of closed type relay;
Fig. 4 is service entrance switch 1J/QF control principle drawing of the present utility model;
Fig. 5 is the control principle drawing of bus connection switch 1M/QF of the present utility model.
Embodiment
With reference to Fig. 1, the electric interlocking installation of many inlet wire many mothers low-voltage distribution systems of the present utility model, comprise multistage transmission of electricity inlet wire, every section of transmission of electricity inlet wire comprises transformer (as No. 1 transformer ~ No. 4 transformer that Fig. 1 indicates), service entrance switch (as service entrance switch 1J/QF ~ 4J/QF that Fig. 1 indicates), bus (as I section bus ~ IV section bus that Fig. 1 indicates), described transformer, by service entrance switch connection bus, is provided with bus connection switch (being labeled with 1M/QF ~ 3M/QF in figure) between the bus of adjacent power inlet wire.In the present embodiment, described service entrance switch, bus connection switch adopt the frame switch of the under-voltage separating brake function of band, and described frame switch is provided with energising closing coil XF and under-voltage switching winding Q.
With reference to Fig. 2, Fig. 3, each section of bus comprises A, B, C phase inlet wire and neutral line N; Described A, B, C phase inlet wire be respectively connected with for busbar voltage detect closed type relay (as Fig. 2 indicate closed type relay 1KA1 ~ 1KA3, closed type relay 2KA1 ~ 2KA3 that Fig. 3 indicates) coil, and be connected to neutral line N by the coil of closed type relay.The switch connecting three closed type relays of same section of bus is connected in series, composition electric interlocking loop.Described electric interlocking loop respectively be connected the service entrance switch of this section of bus and two bus connection switches and connect.
The coil of described service entrance switch is connected with inlet wire switch knob, and the coil of described service entrance switch, inlet wire switch knob, service entrance switch are connected with inlet wire and control power supply after connecting.Further, described inlet wire controls the transformer output that power supply takes from this transmission of electricity inlet wire.As shown in Figure 4, whether when No. 1 transformer has electricity preparation conjunction service entrance switch to be I section bussed supply, first will detect I section bus A, B, C three-phase has electricity.If A, B, C are a certain have electricity mutually, so corresponding 1KA1 ~ 1KA3 contact will disconnect, and the closing circuit of service entrance switch 1J/QF just cannot obtain electric combined floodgate, in case accidents such as existing short circuits; If do not have electricity when A, B, C are identical, so corresponding 1KA1 ~ 1KA3 contact will close, the closing circuit of service entrance switch 1J/QF just electric, by inlet wire switch knob 1J/HA, service entrance switch 1J/QF is closed a floodgate.After service entrance switch 1J/QF closes a floodgate, I section bus obtains electric, and the contact of 1KA1 ~ 1KA3 disconnects, the auxiliary contact self-sustaining "on" position of service entrance switch 1J/QF by carrying.If No. 1 transformer power-off, the under-voltage switching winding Q action of service entrance switch 1J/QF makes service entrance switch 1J/QF separating brake, prevents the electricity of other transformer from entering No. 1 transformer.
The coil of described bus connection switch is connected with mother switch knob, and the coil of described bus connection switch, mother switch knob, bus connection switch are connected with mother and control power supply after connecting.In the present embodiment, described mother controls arbitrary service entrance switch output that power supply takes from adjacent two sections of transmission of electricity inlet wires.Described mother controls power supply and is provided with biswitch relay, and described biswitch relay comprises two-way and always keeps out one to close state of switch, and double switch connects the service entrance switch output of adjacent two sections of transmission of electricity inlet wires respectively; The coil of described biswitch relay connects arbitrary service entrance switch output of adjacent two sections of transmission of electricity inlet wires.As shown in Figure 5, when prepare to close bus connection switch 1M/QF be I section and II section bussed supply time, when prepare to close 1M/QF switch be I section or II section bussed supply time, first by biswitch relay 1K relay swicthing for 1M/QF switch provides control power supply, if I section and II section bus all do not have electricity, bus connection switch 1M/QF can not close a floodgate.If two sections of buses have electricity, just appoint and get wherein one section of power supply.When bus connection switch control power supply has electricity, if 1KA1 ~ 1KA3 detects that I section bus A, B, C are a certain have electricity mutually, 2KA1 ~ 2KA3 detects that II section bus A, B, C are a certain simultaneously has electricity mutually, so the closing circuit of bus connection switch 1M/QF just cannot obtain electric combined floodgate, in case the accidents such as short circuit appear in I section and II section bus.When bus connection switch control power supply has electricity, if 1KA1 ~ 1KA3 detects I section bus A, B, C, phase there all is not electricity, or 2KA1 ~ 2KA3 detects that II section bus A, B, C phase there all is not electricity, the closing circuit of bus connection switch 1M/QF just electric, by mother switch knob 1M/HA, bus connection switch 1M/QF is closed a floodgate.After bus connection switch 1M/QF closes a floodgate, the contact of 1KA1 ~ 1KA3 and 2KA1 ~ 2KA3 disconnects, the auxiliary contact self-sustaining "on" position of bus connection switch 1M/QF by carrying.If I section and II section bus do not have electricity simultaneously, the under-voltage switching winding Q action of bus connection switch 1M/QF makes switch separating brake, prevents the electricity of other transformer from entering I section or II section bus by mistake.
The above, just preferred embodiment of the present utility model, the utility model is not limited to above-mentioned execution mode, as long as it reaches technique effect of the present utility model with identical means, all should belong to protection range of the present utility model.
Claims (5)
1. the electric interlocking installation of the many mothers of inlet wire more than low-voltage distribution system, it is characterized in that: comprise multistage transmission of electricity inlet wire, every section of transmission of electricity inlet wire comprises transformer, service entrance switch, bus, and described transformer, by service entrance switch connection bus, is provided with bus connection switch between the bus of adjacent power inlet wire;
Each section of bus comprises A, B, C phase inlet wire and neutral line N; Described A, B, C phase inlet wire is respectively connected with the coil of the closed type relay detected for busbar voltage, and is connected to neutral line N by the coil of closed type relay; The switch of three closed type relays is connected in series, composition electric interlocking loop;
Described electric interlocking loop respectively be connected the service entrance switch of this section of bus and two bus connection switches and connect;
The coil of described service entrance switch is connected with inlet wire switch knob, and the coil of described service entrance switch, inlet wire switch knob, service entrance switch are connected with inlet wire and control power supply after connecting;
The coil of described bus connection switch is connected with mother switch knob, and the coil of described bus connection switch, mother switch knob, bus connection switch are connected with mother and control power supply after connecting.
2. the electric interlocking installation of many inlet wire many mothers low-voltage distribution systems according to claim 1, is characterized in that: described service entrance switch, bus connection switch adopt the frame switch of the under-voltage separating brake function of band.
3. the electric interlocking installation of many inlet wire many mothers low-voltage distribution systems according to claim 1, is characterized in that: described inlet wire controls the transformer output that power supply takes from this transmission of electricity inlet wire.
4. the electric interlocking installation of many inlet wire many mothers low-voltage distribution systems according to claim 1, is characterized in that: described mother controls arbitrary service entrance switch output that power supply takes from adjacent two sections of transmission of electricity inlet wires.
5. the electric interlocking installation of many inlet wire many mothers low-voltage distribution systems according to claim 4, it is characterized in that: described mother controls power supply and is provided with biswitch relay, described biswitch relay comprises two-way and always keeps out one to close state of switch, and double switch connects the service entrance switch output of adjacent two sections of transmission of electricity inlet wires respectively; The coil of described biswitch relay connects arbitrary service entrance switch output of adjacent two sections of transmission of electricity inlet wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520625479.8U CN204947339U (en) | 2015-08-18 | 2015-08-18 | The electric interlocking installation of many inlet wire many mothers low-voltage distribution systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520625479.8U CN204947339U (en) | 2015-08-18 | 2015-08-18 | The electric interlocking installation of many inlet wire many mothers low-voltage distribution systems |
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| Publication Number | Publication Date |
|---|---|
| CN204947339U true CN204947339U (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520625479.8U Withdrawn - After Issue CN204947339U (en) | 2015-08-18 | 2015-08-18 | The electric interlocking installation of many inlet wire many mothers low-voltage distribution systems |
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| CN (1) | CN204947339U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048304A (en) * | 2015-08-18 | 2015-11-11 | 中山市明阳电器有限公司 | Electrical interlocking device of multi-inlet-wire multi-bus-couple low-voltage distribution system |
-
2015
- 2015-08-18 CN CN201520625479.8U patent/CN204947339U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048304A (en) * | 2015-08-18 | 2015-11-11 | 中山市明阳电器有限公司 | Electrical interlocking device of multi-inlet-wire multi-bus-couple low-voltage distribution system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160106 Effective date of abandoning: 20170804 |