CN102635502A - Anti-freezing control method for fan - Google Patents
Anti-freezing control method for fan Download PDFInfo
- Publication number
- CN102635502A CN102635502A CN2012101404041A CN201210140404A CN102635502A CN 102635502 A CN102635502 A CN 102635502A CN 2012101404041 A CN2012101404041 A CN 2012101404041A CN 201210140404 A CN201210140404 A CN 201210140404A CN 102635502 A CN102635502 A CN 102635502A
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- China
- Prior art keywords
- blower fan
- freezing
- fan
- operating mode
- wind
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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
Abstract
The invention discloses an anti-freezing control method for a fan. The fan is controlled not to stop in snowy days in winter and at the windy condition. Blades of the fan can be guaranteed not to be iced by the above control method, and the problem that power cannot be generated by a wind generating set in snowy days in winter is solved. The control method is simple and low in cost and can increase the power generation amount in some conditions.
Description
Technical field
The present invention relates to blower fan control field, particularly, relate to the anti-freezing controlling method of a kind of blower fan.
Background technique
Cold area in the whole world; Wind power generating set owing to freezing generation, can't be generated electricity in the winter time normally; Especially as some northern areas of China; Winter is wind regime best season in 1 year just, but because the freezing unit that causes can't start and generate electricity, this difficult point wherein is the icing and deicing of blade.
Through the analysis that blade is frozen, in the winter time, if do not snow, because temperature is lower than zero degree throughout the year, air is very dry, can not freeze.Freezing all is that this also divides two kinds of situation owing to produce under the snowy situation of weather, if blower fan is rotating, snowflake is thrown out by the centrifugal action that blade rotation produces, and blade does not have snowflake to drop on the blade, can not freeze.Therefore freezing is created under the situation that snowy day, turbines vane did not have to rotate, because snowflake drops on the blade, under the irradiation of sunlight, merges, and produces water and under the effect of low temperature, congeals into ice.At present, all wind power generating set all are designed with the incision wind speed, and promptly wind speed is low arrives to a certain degree, and like the 2-3 meter per second, blower fan will stop operating.
At present, fan blade is anti-freezing all to be the method for taking physical heating, because MW class draught fan impeller height all at tens meters high, therefore adopts the method cost of heating deicing very high.If but do not carry out deicing, can cause the blower fan in the winter time for a long time all can not normal power generation.
Summary of the invention
The objective of the invention is to overcome the shortcoming and defect of above-mentioned existing technology; Provide a kind of blower fan to prevent freezing controlling method; Guarantee that fan blade does not freeze, solve wind power generating set cold area winter because the freezing problem that can't generate electricity, and controlling method is simple, cost is low.
To achieve these goals, the present invention adopts following technological scheme:
A kind of blower fan is prevented freezing controlling method, and in the winter time snowy day and having under the situation of wind, the control blower fan is not shut down.
Further, said controlling method is specially:
(1) in the operating conditions of wind-powered electricity generation unit; Increase anti-freezing operating mode; On the supervisory system man-machine interface of and remote control room local or dish, cabinet, the wall anti-freezing operating mode is set and drops into button, determine whether that according to weather and meteorological condition input prevents freezing operating mode by the people at blower fan;
(2) snowy day and having under the situation of wind in the winter time, drop into anti-freezing operating mode;
(3) under anti-freezing operating mode, out of service if local wind speed is lower than the incision wind speed not according to the blower fan that requires in the present fan design standard, but blower fan still continues to keep operation; If local wind speed is higher than the blower fan cut-out wind speed, not according to the blower fan feathering to 90 that requires in the present fan design standard °, blower fan is out of service, but sends instruction by control system, makes blower fan put away the oars fast certain angle and feathering not.
Compared with prior art, the present invention has following beneficial effect:
Generally speaking, snowing is crossed swords by cold and heat air in winter causes, the most acute variation that all can follow weather; Therefore all wind can be arranged this moment, many times also have strong wind, controlling method of the present invention is utilized this meteorological characteristics exactly; From general general purpose control method, separate the blower control method in the weather that snows; Set up the anti-freezing operating mode in wind and snow sky, compare with the anti-freezing method of other blower fans, without any need for the input of equipment; (as measuring icing device, electro-heat installation, blowing device etc.), save substantial contribution.When wind speed is higher than the fan operation wind speed upper limit, because not feathering shutdown of blower fan, can also be multiple than other blower fans.
Embodiment
Blower fan of the present invention is prevented freezing controlling method, even under the situation of gentle breeze, make blower fan in snowy day in winter and when wind is arranged blower fan not out of service, thereby guarantee that fan blade does not freeze.Concrete grammar is:
(1) in the operating conditions of wind-powered electricity generation unit, increases anti-freezing operating mode; (like dish, cabinet, wall etc.) are provided with anti-freezing operating mode and drop into button on the supervisory system man-machine interface or other equipment of blower fan this locality and remote control room; Determine whether to drop into anti-freezing operating mode by the people according to weather and meteorological condition.
(2) snowy day and having under the situation of wind in the winter time, drop into anti-freezing operating mode;
(3) under anti-freezing operating mode, out of service if local wind speed is lower than the incision wind speed not according to the blower fan that requires in the present fan design standard, but blower fan still continues to keep operation.As long as a little has a wind, blower fan just begins to rotate, and through the blower fan action of centrifugal force snowflake can't be retained on the blade like this.Equally, under this pattern, if local wind speed is higher than the blower fan cut-out wind speed; Not according to the blower fan feathering to 90 that requires in the present fan design standard °, blower fan is out of service, but sends instruction by control system; Make the blower fan several angle of putting away the oars fast,, specifically need debugging to draw as 85 ° etc.; Purpose is to be no more than under the situation of designing requirement in unit load, makes blade keep certain rotational velocity, through action of centrifugal force; Snowflake is not retained on the blade, also can makes unit increase some generated energy simultaneously.
What should explain at last is: the above is merely the preferred embodiments of the present invention; Be not limited to the present invention; Although the present invention has been carried out detailed explanation with reference to previous embodiment; For a person skilled in the art, it still can be made amendment to the technological scheme that previous embodiment is put down in writing, and perhaps part technical characteristics wherein is equal to replacement.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. the anti-freezing controlling method of a blower fan is characterized in that, in the winter time snowy day and having under the situation of wind, the control blower fan is not shut down.
2. blower fan according to claim 1 is prevented freezing controlling method, it is characterized in that said controlling method is specially:
(1) in the operating conditions of wind-powered electricity generation unit; Increase anti-freezing operating mode; On the supervisory system man-machine interface of and remote control room local or dish, cabinet, the wall anti-freezing operating mode is set and drops into button, determine whether that according to weather and meteorological condition input prevents freezing operating mode by the people at blower fan;
(2) snowy day and having under the situation of wind in the winter time, drop into anti-freezing operating mode;
(3) under anti-freezing operating mode, out of service if local wind speed is lower than the incision wind speed not according to the blower fan that requires in the present fan design standard, but blower fan still continues to keep operation; If local wind speed is higher than the blower fan cut-out wind speed, not according to the blower fan feathering to 90 that requires in the present fan design standard °, blower fan is out of service, but sends instruction by control system, makes blower fan put away the oars fast certain angle and feathering not.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101404041A CN102635502A (en) | 2012-05-08 | 2012-05-08 | Anti-freezing control method for fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101404041A CN102635502A (en) | 2012-05-08 | 2012-05-08 | Anti-freezing control method for fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102635502A true CN102635502A (en) | 2012-08-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101404041A Pending CN102635502A (en) | 2012-05-08 | 2012-05-08 | Anti-freezing control method for fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102635502A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1705823A (en) * | 2002-10-17 | 2005-12-07 | 洛伦佐·巴蒂斯蒂 | Anti-icing system for wind turbines |
| CN101907071A (en) * | 2010-06-29 | 2010-12-08 | 长沙理工大学 | Online anti-icing and de-icing device for wind turbine |
| CN102322405A (en) * | 2011-08-16 | 2012-01-18 | 国电联合动力技术有限公司 | Deicing and freeze resisting system for blade of wind generating set |
-
2012
- 2012-05-08 CN CN2012101404041A patent/CN102635502A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1705823A (en) * | 2002-10-17 | 2005-12-07 | 洛伦佐·巴蒂斯蒂 | Anti-icing system for wind turbines |
| CN101907071A (en) * | 2010-06-29 | 2010-12-08 | 长沙理工大学 | Online anti-icing and de-icing device for wind turbine |
| CN102322405A (en) * | 2011-08-16 | 2012-01-18 | 国电联合动力技术有限公司 | Deicing and freeze resisting system for blade of wind generating set |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120815 |