CN2632333Y - Airing electric shut-off device - Google Patents
Airing electric shut-off device Download PDFInfo
- Publication number
- CN2632333Y CN2632333Y CNU032135440U CN03213544U CN2632333Y CN 2632333 Y CN2632333 Y CN 2632333Y CN U032135440 U CNU032135440 U CN U032135440U CN 03213544 U CN03213544 U CN 03213544U CN 2632333 Y CN2632333 Y CN 2632333Y
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- China
- Prior art keywords
- circuit
- input end
- output
- model
- utility
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The utility model provides a wind electricity locking device, which comprise a signal collecting processing circuit and an output circuit connected with an input end of a power supply contactor, and is characterized in that the signal collecting processing circuit consists of a rectifying circuit and a comparative circuit, and the input end of the signal collecting processing circuit is connected with a secondary end of a driving motor current transformer of a blower and the output end is connected with an input end of an optical coupling isolation driving circuit. The output circuit adopts a non-contact switch circuit. The input end of the non-contact switch circuit is connected with an output end of the optical coupling isolation driving circuit. As air volume of wind power device is proportional to current size of a driving motor of the wind power device, the utility model can indirectly obtain the parameter of the air flow by detecting the driving current of the driving motor of the wind power device, then a threshold signal is converted to a switch signal of large current by a photoelectric isolation so as to achieve the purpose of long-distance transmission. The utility model has strong performance of anti-interference, and can meet the isolation requirement of wind electricity in the special occasions and has very good effect of using.
Description
Technical field
The utility model relates to a kind of fan stoppage breaker, and it is used in the signal pickup assembly in the chain control gear of wind-powered electricity generation.
Background technique
Mainly be now pressure or flow in the chain control gear of wind-powered electricity generation that uses, after the flow that collects or pressure signal are handled, be used for controlling relevant electrical equipment by measurement wind.The existing disadvantage of this mode is: since the intensity of signal a little less than, and the decay in transmission course, so it can not transmit at a distance, simultaneously because its jamproof performance is low, so often produce misoperation, can't satisfy the needs of safety in production because of external interference makes controlled electric appliance.
Summary of the invention
The purpose of this utility model provides a kind of novel fan stoppage breaker, and it can overcome existing shortcoming in the prior art, has stronger interference free performance, can realize remote transmission.
The purpose of this utility model is achieved in that it comprises signal acquisition processing circuit and the output circuit that is connected with power supply contactor input end, it is characterized in that signal acquisition processing circuit is made up of rectification circuit and comparison circuit, its input end connects the secondary terminals of the drive motor current transformer of blower fan, its output terminal connects the input end of light lotus root isolated drive circuit, output circuit adopts non-contact switch circuit, and the input end of non-contact switch circuit is connected with the output terminal of light lotus root isolated drive circuit.
Because the size of wind force device air quantity is to be directly proportional with the size of current of its drive motor, so the utility model is by detecting the driving current of wind force device drive motor, the current parameters that records is analyzed, promptly can obtain the flow parameter of wind indirectly, then threshold signal is isolated by photoelectricity, convert the switching signal of big electric current to, to reach the purpose of remote transmission.Smooth lotus root isolated drive circuit of the present utility model can satisfy the relation of input signal and output, can realize safe electrical isolation again, simultaneously can realize remote transmission, and has a stronger interference free performance, so the utility model can satisfy the wind-powered electricity generation insulation request in special place, has extraordinary using effect.
Description of drawings
Fig. 1 is a theory diagram of the present utility model.
Fig. 2 is a schematic diagram of the present utility model.
Embodiment
The utility model is described in more detail below in conjunction with drawings and the specific embodiments.
By Fig. 1 and Fig. 2 as seen, the input end of signal acquisition processing circuit connects the secondary terminals (being 0-5A) of the drive motor current transformer of blower fan, R1, D1 are the work index signals of blower fan, the ac current signal of blower fan drive motor Current Transformer Secondary end of input is after rectification circuit Q1 becomes direct current signal, and the comparison circuit that is made of R2, D2 and R3 is finished comparison, the setting to this signal.The output terminal of signal acquisition processing circuit is connected with the input end of light lotus root isolated drive circuit, and appropriate signal is flowed to the input end of light lotus root isolated drive circuit, and the light lotus root isolated drive circuit in the present embodiment adopts the IC circuit, and model is 3081.The IC circuit is finished and is isolated output; its output terminal connects the defeated input end of non-contact switch circuit; open the gate pole of non-contact switch circuit Q2; make the Q2 conducting; C1 in the switching circuit, R6 are the protective circuits of Q2; R4, R5 are the synchro sources of IC circuit and as the trigger voltage loop of Q2, and the signal of switching circuit output terminal output is connected to the input end of the power supply contactor of controlled electric appliance equipment.
Claims (1)
1, fan stoppage breaker, it comprises signal acquisition processing circuit and the output circuit that is connected with power supply contactor input end, it is characterized in that signal acquisition processing circuit is made up of rectification circuit and comparison circuit, its input end connects the secondary terminals of the drive motor current transformer of blower fan, its output terminal connects the input end of light lotus root isolated drive circuit, output circuit adopts non-contact switch circuit, and the input end of non-contact switch circuit is connected with the output terminal of light lotus root isolated drive circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032135440U CN2632333Y (en) | 2003-06-03 | 2003-06-03 | Airing electric shut-off device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032135440U CN2632333Y (en) | 2003-06-03 | 2003-06-03 | Airing electric shut-off device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2632333Y true CN2632333Y (en) | 2004-08-11 |
Family
ID=34289643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032135440U Expired - Fee Related CN2632333Y (en) | 2003-06-03 | 2003-06-03 | Airing electric shut-off device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2632333Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8169097B2 (en) | 2006-07-21 | 2012-05-01 | Repower Systems Ag | Method for operating a wind energy installation |
| CN109779845A (en) * | 2017-11-15 | 2019-05-21 | 观为监测技术无锡股份有限公司 | Wind power generating set signal acquisition circuit |
-
2003
- 2003-06-03 CN CNU032135440U patent/CN2632333Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8169097B2 (en) | 2006-07-21 | 2012-05-01 | Repower Systems Ag | Method for operating a wind energy installation |
| CN101490411B (en) * | 2006-07-21 | 2012-12-12 | 再生动力***欧洲公司 | Method for operating a wind energy installation |
| CN109779845A (en) * | 2017-11-15 | 2019-05-21 | 观为监测技术无锡股份有限公司 | Wind power generating set signal acquisition circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |