CN204858722U - Excitation rectification cabinet cooling blower power supply unit - Google Patents
Excitation rectification cabinet cooling blower power supply unit Download PDFInfo
- Publication number
- CN204858722U CN204858722U CN201520490617.6U CN201520490617U CN204858722U CN 204858722 U CN204858722 U CN 204858722U CN 201520490617 U CN201520490617 U CN 201520490617U CN 204858722 U CN204858722 U CN 204858722U
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- CN
- China
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- power supply
- main power
- power source
- cooling blower
- supply unit
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- Expired - Fee Related
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Abstract
The utility model provides an excitation rectification cabinet cooling blower power supply unit, a serial communication port, including main power source (1), stand -by power supply (2), fan (3), main power source (1) is connected to fan (3) through the wire, stand -by power supply (2) are parallelly connected with main power source (1) to be connected to fan (3) through the wire. The utility model provides an excitation rectification cabinet cooling blower power supply unit, with low costs, the material that needs is less, and stability is high, reforms transform the back, will thoroughly eliminate the hidden danger that single element fault caused the unit to stop transport.
Description
Technical field
The utility model relates to excitation rectifier cabinet cooling blower component optimization technical field, particularly a kind of excitation rectifier cabinet cooling blower supply unit.
Background technology
Self shun static excitation system is configured with three rectifier cabinets, is redundant configuration, namely when a rectifier cabinet is out of service, still can meet the various working condition requirements comprising and encouraging by force, but when two rectifier cabinets are stopped transport, excitation system will be stopped transport, and then causes unit outage.Three rectifier cabinets in excitation system are respectively configured with a cooling blower, set according to field regulator logic, when excitation system is run, if rectifier cabinet cooling blower is stopped transport, then time delay 20S stops transport corresponding rectifier cabinet, cooling blower if there is two rectifier cabinets is stopped transport, and stoppage in transit two rectifier cabinets are caused the unplanned outage of unit.Therefore ensure that the reliability of rectifier cabinet cooling blower Power supply is particularly important.
Figure 1 shows that rectifier cabinet cooling blower Power supply and switching circuit figure, as seen from the figure, three cooling blowers share a set of double loop power supply switching circuit, when blower fan main power source is lost, stand-by power supply will be automatically switched to power, and if blower fan main power source recovers, then automatically switch to blower fan main power source and power.But Fig. 1 loop is analyzed further and can find that it exists following hidden danger: existing fan power switching device shifter exists single element fault and causes fan power handoff failure and the hidden danger finally causing unit tripping.When the wiring of blower fan main power source contactor end opening loosen, main contact loose contact, monitoring voltage relay wiring loosen or the situation such as auxiliary contact loose contact occurs time, switching circuit can not action, when main power source breaks down, three rectifier cabinet fan full cut-ofves will be caused, and finally cause that unit is non-to stop, by the conventional maintenance to equipment, the generation of above-mentioned situation can not be stopped completely.
Utility model content
2. in order to solve the problem, the utility model proposes a kind of excitation rectifier cabinet cooling blower supply unit, being connected with n Fans, it comprises n main power source, a stand-by power supply, and a described n main power source connects n Fans, n >=3 respectively; Every Fans all arranges the main power source switching circuit comprising contactor and relay; Described stand-by power supply is in parallel with each main power source respectively, and is connected to every Fans, and every Fans all arranges the stand-by power supply switching circuit comprising contactor and relay.
Particularly, this device comprises 3 main power sources and connects 3 Fans respectively.
A kind of excitation rectifier cabinet cooling blower supply unit that the utility model proposes, cost is low, and the material of needs is less, and stability is high, after transformation, will thoroughly eliminate single element fault and cause the hidden danger of unit outage.
Accompanying drawing explanation
Fig. 1 is excitation rectifier cabinet cooling blower supply unit figure before transformation;
Fig. 2 is excitation rectifier cabinet cooling blower supply unit figure after transformation.
Description of reference numerals
1 main power source 2 stand-by power supply
3 blower fan 4 contactors
5 relays
Embodiment
Be described in detail to embodiment of the present utility model below in conjunction with accompanying drawing, should be understood that, embodiment described herein, only for instruction and explanation of the utility model, is not limited to the utility model.
As shown in Figure 2, a kind of excitation rectifier cabinet cooling blower supply unit, comprises 3 main power sources, 1,1 stand-by power supply 2,3 Fans, 3,12 contactors 4 and 12 relays 5.Described 3 main power sources 1 are wired to 3 Fans 3, and described stand-by power supply 2 is in parallel with 3 main power sources 1, and pass through the 4*4mm of about 500 meters
2side's cable is connected to 3 Fans 3.
Every Fans all arranges the main power source switching circuit comprising contactor and relay; Described main power source switching circuit comprises 2 contactors 4 and 2 relays 5.Wherein, 2 contactors 4 and 1 relay 5 are in parallel with another relay 5 after connecting, and then pass through 1.5mm
2single-core line is connected in parallel on main power source 1 on the wire of blower fan 3.
Described every Fans also all arranges the stand-by power supply switching circuit comprising contactor and relay, the same with described main power source switching circuit, and described stand-by power supply switching circuit also comprises 2 contactors 4 and 2 relays 5.Wherein, 2 contactors 4 and 1 relay 5 are in parallel with another relay 5 after connecting, and then pass through 1.5mm
2single-core line is connected in parallel on stand-by power supply 2 on the wire of blower fan 3.
Generally, main power source 1 provides power supply, when main power source 1 loss of power for blower fan 3, stand-by power supply 2 provides power supply for blower fan 3, and main power source 1 is when going wrong, because the main power source between wind turbine is separate, the normal use of other blower fan can not be affected.
To sum up, a kind of excitation rectifier cabinet cooling blower supply unit that the utility model proposes, cost is low, and the material of needs is less, and stability is high, after transformation, will thoroughly eliminate single element fault and cause the hidden danger of unit outage.
Below preferred implementation of the present utility model is described by reference to the accompanying drawings in detail; but; the utility model is not limited to the detail in above-mentioned execution mode; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection range of the present utility model.
Claims (3)
1. an excitation rectifier cabinet cooling blower supply unit, be connected with n Fans (3), it is characterized in that, comprise n main power source (1), a stand-by power supply (2), a described n main power source (1) connects n Fans (3) respectively, n >=3; Every Fans (3) all arranges the main power source switching circuit comprising contactor (4) and relay (5); Described stand-by power supply (2) is in parallel with each main power source (1) respectively, and being connected to every Fans (3), every Fans (3) all arranges the stand-by power supply switching circuit comprising contactor (4) and relay (5).
2. a kind of excitation rectifier cabinet cooling blower supply unit according to claim 1, is characterized in that, comprises 3 main power sources (1) and connects 3 Fans (3) respectively.
3. a kind of excitation rectifier cabinet cooling blower supply unit according to claim 1, it is characterized in that, this device also comprises relay (5), by conductor in parallel at main power source (1) on the wire of blower fan (3); Another relay (5) by conductor in parallel at stand-by power supply (2) on the wire of blower fan (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520490617.6U CN204858722U (en) | 2015-07-08 | 2015-07-08 | Excitation rectification cabinet cooling blower power supply unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520490617.6U CN204858722U (en) | 2015-07-08 | 2015-07-08 | Excitation rectification cabinet cooling blower power supply unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204858722U true CN204858722U (en) | 2015-12-09 |
Family
ID=54749235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520490617.6U Expired - Fee Related CN204858722U (en) | 2015-07-08 | 2015-07-08 | Excitation rectification cabinet cooling blower power supply unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204858722U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108831117A (en) * | 2018-07-14 | 2018-11-16 | 中铁二院工程集团有限责任公司 | High speed rail earthquake pre-warning system tractive power supply system contact net powers off interface arrangement |
-
2015
- 2015-07-08 CN CN201520490617.6U patent/CN204858722U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108831117A (en) * | 2018-07-14 | 2018-11-16 | 中铁二院工程集团有限责任公司 | High speed rail earthquake pre-warning system tractive power supply system contact net powers off interface arrangement |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20160708 |