CN204376799U - High voltage converter drives high-pressure frequency-conversion motor to run control circuit continuously - Google Patents
High voltage converter drives high-pressure frequency-conversion motor to run control circuit continuously Download PDFInfo
- Publication number
- CN204376799U CN204376799U CN201420814928.9U CN201420814928U CN204376799U CN 204376799 U CN204376799 U CN 204376799U CN 201420814928 U CN201420814928 U CN 201420814928U CN 204376799 U CN204376799 U CN 204376799U
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- China
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- voltage converter
- high voltage
- frequency
- pressurised liquid
- conversion motor
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- Expired - Fee Related
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Abstract
High voltage converter drives high-pressure frequency-conversion motor to run control circuit continuously.It is by the electrical connection of high-tension switch cabinet, high voltage converter and high-pressure frequency-conversion motor order, and is connected in series highly pressurised liquid resistance soft initiator in high voltage converter power frequency loop.High voltage converter converting operation time normal; highly pressurised liquid resistance soft initiator is shut down stand-by, automatically proceeds to power frequency operation when high voltage converter fault stop jumping, and automatically starts highly pressurised liquid resistance soft initiator; high-pressure frequency-conversion motor power frequency operation after starting, ensures that the blower fan that it drags runs continuously.
Description
Art
The utility model relates to a high-pressure frequency-conversion motor and runs control circuit continuously, and especially high voltage converter drives the continuous operation control circuit of high-pressure frequency-conversion motor.
Background technology
At present, known high voltage variable frequency control system is formed by the electrical connection of high-tension switch cabinet, high voltage converter and high-pressure frequency-conversion motor (also can be ordinary high pressure three phase squirrel cage induction motor) order.When high-tension switch cabinet closes a floodgate, after high voltage converter starts, high-pressure frequency-conversion motor frequency conversion runs, and Driving Fan operates, and regulates rotation speed of fan to realize with regulating the frequency of high voltage converter.But the high-pressure frequency-conversion motor that it drives when high voltage converter stop jumping and the blower fan of dragging are shut down simultaneously, loss of life or personal injury and device damage can be brought to not allowing the blower fan of shutting down suddenly in running.General high voltage variable frequency control system can not ensure that high-pressure frequency-conversion motor and the blower fan dragged operate continuously, can bring hidden danger to safety and production.
Summary of the invention
The deficiency that blower fan operates continuously can not be ensured to overcome existing high voltage variable frequency control system; the utility model provides a kind of high voltage variable frequency control system; the fan frequency conversion of the high-pressure frequency-conversion motor that this system can not only make high voltage converter drive and dragging runs; and automatically can be converted into power frequency operation when high voltage converter fault stop jumping; make high-pressure frequency-conversion motor power frequency operation; ensure that blower fan operates continuously, avoid the generation of producing shutdown and security incident.
The utility model solves the technical scheme that its technical problem adopts: in general high voltage variable frequency control system, increase a highly pressurised liquid resistance soft initiator (high-pressure frequency-conversion motor needs to bear the power frequency startup electric current of 3.5 times), by the electrical connection of high-tension switch cabinet, high voltage converter and high-pressure frequency-conversion motor order, highly pressurised liquid resistance soft initiator and high voltage converter also connect, and are connected in series highly pressurised liquid resistance soft initiator in high voltage converter power frequency loop.The frequency conversion loop of high voltage converter and power frequency loop also connect, and be in series with interlocking contact, can only connect a loop in running in electric control loop.Highly pressurised liquid resistance soft initiator is in shutdown dormant state under normal circumstances; control loop power-off; power frequency operation is automatically converted to when high voltage converter breaks down unexpected stop jumping; highly pressurised liquid resistance soft initiator is sealed in high voltage converter power frequency loop; frequency conversion loop disconnects; automatic recovery highly pressurised liquid resistance soft initiator controls power supply; automatically start highly pressurised liquid resistance soft initiator makes high-pressure frequency-conversion motor power frequency start simultaneously; 45 seconds starting times; then high-pressure frequency-conversion motor power frequency operation, regulates fan delivery to use valve regulated.Although be converted in the very short time of power frequency state at high voltage converter by frequency conversion, motor meeting moment dead electricity, but blower fan runs by inertia, comprises the motor power frequency startup stage, rotation speed of fan can decrease but to Influence of production not quite, reach the object that production is carried out continuously.
The beneficial effects of the utility model are, can while high voltage converter breaks down unexpected stop jumping, automatic power frequency startup high-pressure frequency-conversion motor power frequency operation, and the blower fan making it drag operates continuously, and structure is simple.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is electric major loop connection layout of the present utility model.
Fig. 2 is that high voltage converter drives high-pressure frequency-conversion motor continuous run signal contact schematic diagram.
1. high voltage bus in figure, 2. high-tension switch cabinet, 3. high-tension cable, 4. high voltage converter bypass cabinet, 5. phase shifting transformer cabinet, 6. power unit cabinet, 7. high voltage converter control cubicle, 8. high-pressure frequency-conversion motor, 9. highly pressurised liquid resistance soft initiator starts cabinet, 10. highly pressurised liquid resistance soft initiator short circuit cabinet, 11. high-voltage switch cabinet breaker secondary auxiliary contact, 12. highly pressurised liquid resistance soft initiator short circuit cabinets start timeout signal, 13. high voltage converter fault stop jumpings start highly pressurised liquid resistance soft initiator selector switch automatically, 14. control power interlock contact, 15. highly pressurised liquid resistance soft initiator automatically activated signals, 16. high voltage converter fault stop jumping high-tension switch cabinet Hard link plates, 17. high-voltage frequency converter controller stop jumping signals, 18. high voltage converter converting operation signals.
Embodiment
In FIG, high voltage bus (1), high-tension switch cabinet (2), high voltage converter bypass cabinet (4) is by the electrical connection of high-tension cable (3) order, high voltage converter bypass cabinet (4), phase shifting transformer cabinet (5), power unit cabinet (6), high voltage converter control cubicle (7) is connected by high-tension cable (3) or control cables, high voltage converter bypass cabinet (4) is connected by high-tension cable (3) with high-pressure frequency-conversion motor (8), be connected in series highly pressurised liquid resistance soft initiator in the power frequency loop of high voltage converter bypass cabinet (4) and start cabinet (9) and highly pressurised liquid resistance soft initiator short circuit cabinet (10), and be connected by high-tension cable (3).Time normal, high-tension switch cabinet (2) closes a floodgate, high voltage converter frequency conversion loop is run, the power-off of power frequency loop, the frequency conversion loop power-off when high voltage converter fault stop jumping, put into operation in power frequency loop, automatic startup highly pressurised liquid resistance soft initiator starts cabinet (9), end highly pressurised liquid resistance soft initiator short circuit cabinet (10) short circuit to be launched, high-pressure frequency-conversion motor (8) power frequency operation.
In the embodiment depicted in figure 2, high-voltage switch cabinet breaker secondary auxiliary contact (11) provide switch position signal to high voltage converter, high voltage converter fault stop jumping high-tension switch cabinet Hard link plate (16) is for selecting whether stop jumping high-tension switch cabinet (2), disconnect time normal, high-voltage frequency converter controller stop jumping signal (17) provides stop jumping signal, high voltage converter converting operation signal (18) ensures only ability stop jumping under high voltage converter frequency conversion state, is connected in high-tension switch cabinet (2) trip(ping) circuit after aforementioned three signals series connection.High-voltage switch cabinet breaker secondary auxiliary contact (11) start one of cabinet (9) and highly pressurised liquid resistance soft initiator short circuit cabinet (10) two conditions providing initiating signal to highly pressurised liquid resistance soft initiator, and highly pressurised liquid resistance soft initiator short circuit cabinet starts timeout signal (12) provides trip signal to high-tension switch cabinet (2).Control power interlock contact (14) and control the control power supply that highly pressurised liquid resistance soft initiator starts cabinet (9) and highly pressurised liquid resistance soft initiator short circuit cabinet (10), high voltage converter highly pressurised liquid resistance soft initiator under frequency conversion state disconnects and controls power supply, high voltage converter fault stop jumping starts highly pressurised liquid resistance soft initiator selector switch (13) automatically for automatically starting selection, connect time normal, highly pressurised liquid resistance soft initiator automatically activated signal (15) is sent by high voltage converter power frequency loop, it is another condition that highly pressurised liquid resistance soft initiator starts, the starting-up later time of access highly pressurised liquid resistance soft initiator after above-mentioned two entry conditions series connection.High-tension switch cabinet (2) the not stop jumping when high voltage converter fault stop jumping, and be automatically converted to power frequency state by frequency conversion state, highly pressurised liquid resistance soft initiator starts the control power up of cabinet (9) and highly pressurised liquid resistance soft initiator short circuit cabinet (10), highly pressurised liquid resistance soft initiator automatically activated signal (15) provides simultaneously, highly pressurised liquid resistance soft initiator power frequency startup.
Claims (1)
1. high voltage converter drives high-pressure frequency-conversion motor to run control circuit continuously, it is by the electrical connection of high-tension switch cabinet, high voltage converter and high-pressure frequency-conversion motor order, highly pressurised liquid resistance soft initiator and high voltage converter also connect, and it is characterized in that: in high voltage converter power frequency loop, be connected in series highly pressurised liquid resistance soft initiator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420814928.9U CN204376799U (en) | 2014-12-22 | 2014-12-22 | High voltage converter drives high-pressure frequency-conversion motor to run control circuit continuously |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420814928.9U CN204376799U (en) | 2014-12-22 | 2014-12-22 | High voltage converter drives high-pressure frequency-conversion motor to run control circuit continuously |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204376799U true CN204376799U (en) | 2015-06-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420814928.9U Expired - Fee Related CN204376799U (en) | 2014-12-22 | 2014-12-22 | High voltage converter drives high-pressure frequency-conversion motor to run control circuit continuously |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204376799U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119551A (en) * | 2015-10-09 | 2015-12-02 | 广西华锐钢铁工程设计咨询有限责任公司 | Large power asynchronous motor frequency conversion and soft start-based control device |
-
2014
- 2014-12-22 CN CN201420814928.9U patent/CN204376799U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119551A (en) * | 2015-10-09 | 2015-12-02 | 广西华锐钢铁工程设计咨询有限责任公司 | Large power asynchronous motor frequency conversion and soft start-based control device |
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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: 20150603 Termination date: 20151222 |
|
| EXPY | Termination of patent right or utility model |