CN102661251A - Corrosion-resistant cooling structure for offshore wind turbine - Google Patents
Corrosion-resistant cooling structure for offshore wind turbine Download PDFInfo
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- CN102661251A CN102661251A CN2012101456633A CN201210145663A CN102661251A CN 102661251 A CN102661251 A CN 102661251A CN 2012101456633 A CN2012101456633 A CN 2012101456633A CN 201210145663 A CN201210145663 A CN 201210145663A CN 102661251 A CN102661251 A CN 102661251A
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- cabin
- cooling
- air
- offshore wind
- anticorrosion
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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 a corrosion-resistant cooling structure for an offshore wind turbine. The wind turbine comprises a tower, an engine room arranged on the tower in a rotatable mode, and a spindle arranged inside the engine room in a rotatable mode. A running fit part of the tower and the engine room and a running fit part of the spindle and the engine room are sealed in a labyrinth seal mode, and an air cooling system is arranged inside the sealed engine room. Because the rotating parts are subjected to labyrinth seal, parts inside the engine room are isolated from outside air, so that harm of corrosive substances contained in the outside air to the inside parts is reduced; and therefore, the anti-corrosion grade of the inside parts can be properly reduced, so that the cost of the parts inside the engine room is reduced; and meanwhile, an aim of cooling the interior of the engine room through the air cooling system at low operating cost is fulfilled.
Description
Technical field
The present invention relates to technical field of wind power generation, particularly a kind of anticorrosion cooling structure of offshore wind generating.
Background technique
The oceanic winds power generator is to be a kind of device of electric energy with wind energy transformation; Generally be made up of tower tube, cabin and wind wheel, the tower tube generally is to be used for the cabin is supported to high aerial support, sometimes also can be with some parts; Be installed in the tower tube like transformer or current transformer etc.; With convenient for maintaining and to the cabin slot milling, engine room inside is containing the key equipment of wind-driven generator, like equipment such as gear-box and generators.
Because the rotation of ocean wind turbines rotor will pass to generator amature through overdrive gear; Make the generating of generator amature high speed rotating; And in this process middle gear case runs up, can produce heat because of friction, and generator also can produce heat because of electromagnetic consumable and friction simultaneously, and these heating component surfaces can produce convection heat exchange and thermal radiation; Thereby cause the temperature of air in the cabin to raise, therefore need cool off it.
Present cabin cooling means mainly contains following several kinds of schemes:
One, is about to the cabin and makes ventilation; Outside air can get into the cabin part of its inside is carried out natural cooling; Though this kind type of cooling can reach the effect of cooling, extraneous corrosive material can be followed air entering engine room inside component are caused damage, especially for the oceanic winds power generator; Because marine airborne high salinity, high humility make that oceanic winds power generator inner body is corroded more easily; This just needs the parts in the cabin all to adopt high anticorrosion grade, strengthens wind-powered electricity generation machine cost, and airborne particulate matter also will make the rotary component accelerated wear test in the cabin simultaneously.
Two, U.S. Pat 6439832B1 has announced the anticorrosion cooling technology of a kind of micro positive pressure; Be to send in the cabin after through a kind of filtrating equipment airborne salinity and other particulate matter being removed; And make the air pressure in the cabin maintain the level that is higher than atmospheric pressure; Thereby the flow direction of guaranteeing air is in the cabin, to flow to nacelle exterior through the slit all the time, gets into the cabin to stop extraneous corrosive gas and particulate matter, reaches the corrosion protection purpose.It is bigger that this technology is controlled difficulty on the one hand; Though after being to adopt filtrating equipment with air-filtering on the other hand it is got in the cabin; But filtrating equipment is that certain aperture is arranged all the time, can't accomplish that 100% filters, thereby diameter will enter in the cabin with air less than the particle in aperture; The aggressive medium and the particulate matter that are deposited in the cabin can be increasing, thereby rotatable parts are threatened.
Three, the tower barrel type of cooling that proposes among International Application No. WO 01/06121, WO2004/016945, the WO2010/069954; Be with the tower barrel as with the heat exchanger in the external world; Air in the cabin is guided to the tower tube; Carry out heat exchange at tower tube place through tower barrel and cool ambient air, but, be difficult to satisfy the requirement of high-power unit because the heat diffusion area of tower barrel is limited; Encapsulation process is not carried out in tower tube and cabin yet simultaneously, and extraneous corrosive gas and particulate matter enter in the cabin and can key equipment wherein be constituted a threat to.
Four, can also adopt transpiration-cooled mode that the cabin is cooled off at present; Specifically be that a vaporizer is set in the cabin; At condenser of engine room cover outer installment, with pipeline cooler and vaporizer are linked to be a circulatory system, the low boiling cooling medium of in system, packing into; Evaporation heat absorption through cooling medium realizes the cooling to air in the cabin, realizes cooling medium circulating in pipeline through the variable density of cooling medium in evaporation and condensation process simultaneously.This method has effectively improved cooling effect; But the cooling medium expensive, and need to install various safety valves to prevent the pipeline superpressure, improved operating cost; Encapsulation process is not carried out in the cabin yet simultaneously, and the component in the cabin still receive the harm of external corrosion property gas easily.
Therefore; How to develop the anticorrosion cooling structure of a kind of oceanic winds power generator; Both can make the cabin realize cooling, and can make component in the cabin avoid the harm of airborne etchant gas and particulate matter again, be the technical problem that those skilled in the art need solution badly.
Summary of the invention
In view of this; The anticorrosion cooling structure that the purpose of this invention is to provide a kind of offshore wind generating; To reduce the anticorrosive rating of each component in the cabin; Thereby reduce each component cost of production, avoid airborne particulate matter to get into engine room inside simultaneously, reduce the wearing and tearing of the rotatable parts in the cabin.
For solving the problems of the technologies described above, the present invention provides a kind of anticorrosion cooling structure of offshore wind generating, comprising:
The tower tube;
Be arranged at the cabin on the said tower tube rotationally, and the matching part of said cabin and tower tube adopts the labyrinth seal mode to seal;
Be arranged at the main shaft of the inside in said cabin rotationally; And the matching part in said main shaft and said cabin adopts the labyrinth seal mode to seal; The end that said main shaft is positioned at said nacelle exterior is provided with the wheel hub that is used for mounting blades, and said wheel hub is provided with air guide sleeve;
Be arranged at the air cooling system of said engine room inside.
Preferably, blade and the matching part of said air guide sleeve and the matching part in said air guide sleeve and said cabin that are rotatably installed on the said wheel hub all adopt the labyrinth seal mode to seal.
Preferably, said air cooling system specifically comprises:
Heat exchanger, said heat exchanger is arranged at said engine room inside;
Cooling air channels, said cooling air channels are arranged in the said cabin and through described heat exchanger, the outlet end of said cooling air channels and entry end communicate with the external world, and seals with described cabin;
Cooling air drive unit, said cooling air drive unit are arranged on cooling air channels or its circulation loop.
Preferably, said cooling air drive unit is arranged at the outlet end of said cooling air channels.
Preferably, also comprise and be installed on the flow guide device that said engine room inside is used for the hot air of engine room inside is guided to described heat exchanger.
Preferably, said flow guide device is induced draught fan or fan.
Preferably, also comprise the dehumidifier that is arranged in the said cabin.
Preferably, said dehumidifier is a rotary dehumidifier.
Can find out the anticorrosion cooling structure of offshore wind generating provided by the present invention by above technological scheme; Because labyrinth seal is all adopted at its cabin and the counterrotating position of tower tube and the counterrotating position of main shaft and cabin; Therefore the component of engine room inside have been realized isolated with ambient air; Thereby reduced the harm of the corrosive material that contained in the ambient air, so the anticorrosive rating of inner components can reduce suitably, thereby reduce the cost of the component of engine room inside inner components; Technological scheme provided by the present invention also is provided with air cooling system at engine room inside simultaneously, thereby has realized the cooling of engine room inside.It is anticorrosion that the anticorrosion cooling structure that this shows offshore wind generating provided by the present invention both can make the engine room inside component realize at lower cost, can realize the cooling in cabin again.
Description of drawings
Fig. 1 is the engine room cover position structural representation in the anticorrosion cooling structure of the offshore wind generating that the embodiment of the invention provided;
Fig. 2 is the air guide sleeve in the anticorrosion cooling structure of the offshore wind generating that the embodiment of the invention provided and the relative position schematic representation of tower tube and air guide sleeve and impeller;
The cabin in the anticorrosion cooling structure of the offshore wind generating that Fig. 3 provides for the embodiment of the invention and the labyrinth seal schematic representation at tower tube position.
Wherein 1 is the tower tube, and 2 is flow guide device, and 3 is the cabin, and 4 is the cooling medium drive unit; 5 is cooling air channels, and 6 is heat exchanger, and 7 is dehumidifier; 8 is air guide sleeve, and 9 is blade, and A is cabin and tower tube matching part; B is air guide sleeve and cabin matching part, and C is the matching part of blade and air guide sleeve, and D is the sealing tooth.
Embodiment
Core of the present invention provides a kind of anticorrosion cooling structure of offshore wind generating; The matching part of the matching part of cabin and tower tube and cabin and main shaft all adopts the mode of labyrinth seal to realize the sealing that the cabin is whole in this cooling structure; And in the sealed mode cabin, air cooling system is set; Guaranteeing to have realized the whole sealing in cabin when engine room inside can cool off like this, the component of engine room inside and isolate from outer air make the component of engine room inside avoid the influence of the corrosive material in the ambient air; Therefore the anticorrosive rating that can appropriateness reduces the engine room inside component reduces the cost of component.
In order to make those skilled in the art person understand the present invention program better, the present invention is done further detailed description below in conjunction with accompanying drawing and mode of execution.
Please refer to Fig. 1, Fig. 1 is the engine room cover position structural representation in the anticorrosion cooling structure of the offshore wind generating that the embodiment of the invention provided.
The anticorrosion cooling structure of offshore wind generating provided by the present invention comprises:
Tower tube 1;
Be arranged at the cabin 3 on the said tower tube 1 rotationally; Rotate with respect to the tower tube in cabin 3 mainly is to make the blade of offshore wind generating aim at the direction of the wind comes from; Being electric energy with wind energy transformation to greatest extent; And said cabin 3 seals with the matching part A employing labyrinth seal mode of tower tube 1, adopts the labyrinth mode to seal and can guarantee that promptly cabin 3 with respect to tower tube 1 realization rotation relatively, can guarantee that again the matching part of cabin 3 and tower tube 1 is realized sealing;
Be arranged at the main shaft of the inside in said cabin 3 rotationally; This main shaft is the transmission shaft that wind wheel rotates; Main shaft rotates with respect to the cabin, thereby the matching part in main shaft in the present embodiment and cabin 3 adopts the labyrinth seal mode to seal, and main shaft is positioned at said cabin 3 outside ends and is provided with the wheel hub that is used for mounting blades 9; Wheel hub is provided with air guide sleeve 8, and the middle wind wheel in the embodiment of the invention is meant the assemblying body of the air guide sleeve 8 on blade 9 and wheel hub and the wheel hub;
Be arranged at the air cooling system of 3 inside, said cabin.
Owing to have the gap between the labyrinth sealed structure; No solid contact needn't be lubricated, and allowed thermal expansion; Can be used in relative rotation and require in the occasion of sealing, thereby can satisfy the seal request of matching part in matching part A and the main shaft and the cabin 3 of cabin 3 and tower tube 1.
Can find out the anticorrosion cooling structure of offshore wind generating provided by the present invention by above technological scheme; Because its cabin 3 and tower tube 1 counterrotating position and main shaft and 3 counterrotating positions, cabin all adopt the mode of labyrinth seal to carry out encapsulation process; Therefore cabin 3 inner component have been realized isolated with ambient air; Thereby reduced the harm of the corrosive material that contained in the ambient air to inner components; Therefore the anticorrosive rating of inner components can suitably reduce; Thereby reduced the cost of the inner component in cabin 3, simultaneously technological scheme provided by the present invention also in the cabin 3 set inside air cooling system, thereby realized the cooling that cabin 3 is inner; It is anticorrosion that the anticorrosion cooling structure that this shows offshore wind generating provided by the present invention both can make cabin 3 inner components realize at lower cost, can make cabin 3 realize cooling again.
In order to regulate the rotating speed of wind wheel; The scheme of taking at present is to make blade 9 rotatable with respect to wheel hub; Thereby the angle that makes blade 9 and wind direction changes and regulates the whole rotating speed of wind wheel, because air guide sleeve 8 is static relatively with wheel hub, thereby blade 9 also is counterrotating with air guide sleeve 8; Wind wheel integral body is to rotatablely move with respect to the cabin, as shown in Figure 2.For the sealing that realizes that cabin and wind wheel are whole; Thereby make the interior component of wheel hub also avoid the harm of extraneous corrosive material, also adopt the mode of labyrinth seal to carry out encapsulation process with the matching part C of air guide sleeve 8 and the matching part B in air guide sleeve 8 and cabin 3 in blade 9 in the present embodiment.
More concrete; Labyrinth seal mode with cabin 3 and tower tube 1 matching part A is that example is introduced labyrinth seal mode provided by the present invention: first ring baffle with a plurality of sealing tooth D is set on tower tube 1; The position relative set that on engine room cover 3, cooperates with tower tube 1 has second ring baffle of a plurality of sealing tooth D; Sealing tooth on first ring baffle and the sealing tooth on second ring baffle are staggered; Thereby form throttle clearance and expansion cavity, realize throttling sealing, as shown in Figure 3 extraneous gas.Other matching parts such as air guide sleeve 8 all adopt above-mentioned sealing means to seal with matching part B, the blade 9 in cabin 3 with the matching part C of air guide sleeve 8 and the matching part in main shaft and cabin 3, repeat no more at this.
The throttle clearance that the number of above-mentioned sealing tooth and sealing tooth are staggered to form and the size of expansion cavity are decided according to actual conditions, and generally speaking, the sealing number of teeth is many more, and throttle clearance is more little, and the effect of labyrinth seal is good more.
Cooling system in the foregoing description specifically comprises:
Heat exchanger 6, heat exchanger 6 are arranged at 3 inside, cabin, are used for cabin 3 inner high-temperature gases are cooled off;
Cooling air drive unit 4, said cooling air drive unit 4 are arranged on cooling air channels 5 or its circulation loop, are used to realize flowing of air, reach cooling effect.
Heat exchanger 6 will be as the intermediate member of hot airs in the cabin 3 with the cooling air heat exchange of 3 outsides, cabin; Cooling air channels 5 is through heat exchanger 6; Heat exchanger 6 contacts with cabin 3 interior hot airs simultaneously, and the heats in the cabin 3 will pass to cooling air through heat exchanger 6 like this, and outside cooling air will circulate in cooling air channels 5 through cooling air drive unit 4; Thereby the heat in the cabin 3 is derived endlessly; Realize the cooling of 3 inside, cabin, because encapsulation process has been carried out at the position that cooling air channels 5 contacts with cabin 3, so cabin 3 still is the sealing cabin; Can not communicate, thereby avoid extraneous corrosive gas and particulate material to get into wherein with ambient atmosphere.
In order further to optimize technological scheme proposed by the invention; Cooling air channels 5 internal surfaces and cooling air drive unit 4 in the present embodiment are provided with corrosion-resistant coating; Concrete corrosion-resistant coating can be the fluorocarbon resin layer; Perhaps can realize the coating of anti-corrosion function for spelter coating etc.; Perhaps the inwall at cooling air channels 5 and cooling air drive unit 4 tumbles in the corrosion protection inside liner, all can realize prolonging the purpose in the working life of cooling air channels 5 and cooling air drive unit 4, and above-mentioned cooling air drive unit 4 can be blower or induced draught fan.
In order to make flowing of cooling air more smooth and easy, the cooling air drive unit 4 in the present embodiment preferably is arranged on the outlet end of said cooling air channels 5.
For the heat transfer that will accumulate in the air in the cabin 3 arrives above the heat exchanger 6, make the temperature at each position in the cabin 3 even, present embodiment has also been installed the flow guide device 2 that is used for hot air is guided to heat exchanger 6 in cabin 3; This flow guide device 2 both can be blower; Also can be induced draught fan or fan, its objective is that the hot air that makes in the cabin 3 forms circulation, and carry out heat exchange through heat exchanger 6; Make the heat exchange of 3 inside, cabin more abundant, temperature is more even.
Because its essence of salt spray corrosion in the cabin 3 is exactly electrochemical corrosion, and one of main means that prevent electrochemical corrosion are exactly to keep air drying, will stop the generation of electrochemical corrosion like this; Therefore, in order further to improve anticorrosion ability, the wind-driven generator in the present embodiment has preferably also increased dehumidifier 7 in cabin 3; This dehumidifier 7 can change dehumidifier for wheel, and the principle of rotary wheel dehumidifying is to utilize some special materials, like silica gel; Molecular sieve, article such as lithium chloride have very strong moisture absorption; Constantly from surrounding atmosphere, draw water vapor; And being discharged to nacelle exterior, wheel changes the drain opening of dehumidifier and cabin 3 exterior and sealing is also realized in the cooperation place in cabin 3, perhaps can also adopt other can realize removing the dehumidifier that water in air is divided; These dehumidifiers are device well known to those skilled in the art, repeat no more at this.
More than the anticorrosion cooling structure of offshore wind generating provided by the present invention has been carried out detailed introduction.Used concrete example among this paper principle of the present invention and mode of execution are set forth, above embodiment's explanation just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (8)
1. the anticorrosion cooling structure of an offshore wind generating is characterized in that, comprising:
Tower tube (1);
Be arranged at the cabin (3) on the said tower tube (1) rotationally, and the matching part A of said cabin (3) and tower tube (1) adopts the labyrinth seal mode to seal;
Be arranged at the main shaft of the inside in said cabin (3) rotationally; And the matching part of said main shaft and said cabin (3) adopts the labyrinth seal mode to seal; Said main shaft is positioned at the outside end in said cabin (3) and is provided with the wheel hub that is used for mounting blades (9), and said wheel hub is provided with air guide sleeve (8);
Be arranged at the inner air cooling system in said cabin (3).
2. the anticorrosion cooling structure of offshore wind generating according to claim 1; It is characterized in that the blade (9) that is rotatably installed on the said wheel hub all adopts the labyrinth seal mode to seal with the matching part C of said air guide sleeve (8) and the matching part B in said air guide sleeve (8) and said cabin (3).
3. the anticorrosion cooling structure of offshore wind generating according to claim 1 is characterized in that, said air cooling system specifically comprises:
Heat exchanger (6), said heat exchanger (6) are arranged at inside, said cabin (3);
Cooling air channels (5), said cooling air channels (5) are arranged in the said cabin (3) and through described heat exchanger (6), the outlet end and the entry end of said cooling air channels (5) communicate with the external world, and seals with described cabin (3);
Cooling air drive unit (4), said cooling air drive unit (4) is arranged on cooling air channels (5) or its circulation loop.
4. the anticorrosion cooling structure of offshore wind generating according to claim 3 is characterized in that, said cooling air drive unit (4) is arranged at the outlet end of said cooling air channels (5).
5. the anticorrosion cooling structure of offshore wind generating according to claim 4 is characterized in that, comprises that also being installed on inside, said cabin (3) is used for the flow guide device (2) that the hot air that cabin (3) are inner guides to described heat exchanger (6).
6. the anticorrosion cooling structure of offshore wind generating according to claim 5 is characterized in that, said flow guide device (2) is induced draught fan or fan.
7. according to the anticorrosion cooling structure of any described offshore wind generating of claim 1-6, it is characterized in that, also comprise the dehumidifier (7) that is arranged in the said cabin (3).
8. the anticorrosion cooling structure of offshore wind generating according to claim 7 is characterized in that, said dehumidifier (7) is a rotary dehumidifier.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210145663.3A CN102661251B (en) | 2012-05-10 | 2012-05-10 | Corrosion-resistant cooling structure for offshore wind turbine |
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| CN201210145663.3A CN102661251B (en) | 2012-05-10 | 2012-05-10 | Corrosion-resistant cooling structure for offshore wind turbine |
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| CN102661251A true CN102661251A (en) | 2012-09-12 |
| CN102661251B CN102661251B (en) | 2015-04-15 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234947A (en) * | 2014-10-10 | 2014-12-24 | 中船重工(重庆)海装风电设备有限公司 | Cabin environment control device of offshore wind generating set |
| CN104712503A (en) * | 2013-12-16 | 2015-06-17 | 上海电气风电设备有限公司 | Cabin cooling system of offshore wind generator set |
| CN107420273A (en) * | 2017-08-14 | 2017-12-01 | 山东中车风电有限公司 | Offshore wind turbine environmental Kuznets Curves mechanism, system and application |
| CN111720272A (en) * | 2020-06-30 | 2020-09-29 | 国电联合动力技术有限公司 | Intelligent monitoring device for microenvironment of wind generating set and control method thereof |
| CN112780509A (en) * | 2019-11-01 | 2021-05-11 | 新疆金风科技股份有限公司 | Air cooling system, wind generating set and cooling method thereof |
| CN113833617A (en) * | 2021-09-16 | 2021-12-24 | 中国华能集团清洁能源技术研究院有限公司 | System and method for removing moisture of cabin of offshore wind turbine generator |
| CN114087142A (en) * | 2021-11-30 | 2022-02-25 | 中国华能集团清洁能源技术研究院有限公司 | Cabin dehumidification system |
| CN114992065A (en) * | 2022-06-21 | 2022-09-02 | 江苏天能海洋重工有限公司 | Sealing structure of tower barrel of offshore wind generating set |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DK201800097U3 (en) * | 2018-12-21 | 2020-03-24 | Cotes A/S | WINDMILL DEHUMP INCLUDING A SECONDARY POWER SOURCE |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104712503A (en) * | 2013-12-16 | 2015-06-17 | 上海电气风电设备有限公司 | Cabin cooling system of offshore wind generator set |
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| CN112780509A (en) * | 2019-11-01 | 2021-05-11 | 新疆金风科技股份有限公司 | Air cooling system, wind generating set and cooling method thereof |
| CN112780509B (en) * | 2019-11-01 | 2023-07-28 | 新疆金风科技股份有限公司 | Air cooling system, wind generating set and cooling method thereof |
| CN111720272A (en) * | 2020-06-30 | 2020-09-29 | 国电联合动力技术有限公司 | Intelligent monitoring device for microenvironment of wind generating set and control method thereof |
| CN113833617A (en) * | 2021-09-16 | 2021-12-24 | 中国华能集团清洁能源技术研究院有限公司 | System and method for removing moisture of cabin of offshore wind turbine generator |
| CN114087142A (en) * | 2021-11-30 | 2022-02-25 | 中国华能集团清洁能源技术研究院有限公司 | Cabin dehumidification system |
| CN114087142B (en) * | 2021-11-30 | 2024-02-23 | 中国华能集团清洁能源技术研究院有限公司 | Cabin dehumidification system |
| CN114992065A (en) * | 2022-06-21 | 2022-09-02 | 江苏天能海洋重工有限公司 | Sealing structure of tower barrel of offshore wind generating set |
| CN114992065B (en) * | 2022-06-21 | 2023-12-05 | 江苏天能海洋重工有限公司 | Sealing structure of offshore wind turbine generator system tower |
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