CN102661251B - Corrosion-resistant cooling structure for offshore wind turbine - Google Patents
Corrosion-resistant cooling structure for offshore wind turbine Download PDFInfo
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- CN102661251B CN102661251B CN201210145663.3A CN201210145663A CN102661251B CN 102661251 B CN102661251 B CN 102661251B CN 201210145663 A CN201210145663 A CN 201210145663A CN 102661251 B CN102661251 B CN 102661251B
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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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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
Oceanic winds power generator is a kind of device of electric energy by wind energy transformation, generally be made up of tower cylinder, cabin and wind wheel, tower cylinder is generally for cabin being supported to high aerial support, sometimes also can by some parts, as transformer or current transformer etc. are installed in tower cylinder, also give cabin slot milling with convenient for maintaining, engine room inside accommodates the key equipment of wind-driven generator, as the equipment such as gear-box and generator.
Because the rotation of ocean wind turbines rotor will pass to generator amature by overdrive gear, generator amature High Rotation Speed is generated electricity, and gearbox high-speed can produce heat because of friction in operating in the process, simultaneously generator also can produce heat because of electromagnetic consumable and friction, these heating component surfaces can produce convection heat exchange and thermal radiation, thus cause the temperature of air in cabin to raise, therefore need to cool it.
Current cabin cooling means mainly contains following several scheme:
One, ventilation is made by cabin, outside air can enter cabin and carry out nature cooling to the part of its inside, although this kind of type of cooling can reach the effect of cooling, but extraneous corrosive material can be followed air and be entered engine room inside and cause damage to component, especially for oceanic winds power generator, due to the high salinity in sea air, high humility makes oceanic winds power generator inner body more easily be corroded, this just needs the parts in cabin all to adopt high anticorrosion grade, strengthen wind turbine cost, particulate matter simultaneously in air also will make the rotary component accelerated wear test in cabin.
Two, US Patent No. 6439832B1 discloses the anticorrosion cooling technology of a kind of micro positive pressure, send in cabin after the salinity in air and other particulate matter being removed by a kind of filtrating equipment, and make the air pressure in cabin maintain level higher than atmospheric pressure, thus guarantee that the flow direction of air is flow to nacelle exterior through gap in cabin all the time, to stop extraneous corrosive gas and particulate matter to enter cabin, reach corrosion protection object.It is larger that this technology controls difficulty on the one hand, although be on the other hand to adopt filtrating equipment to enter in cabin by making it after air-filtering again, but filtrating equipment is have certain aperture all the time, 100% filtration cannot be accomplished, thus the particle that diameter is less than aperture will enter in cabin with air, be deposited on aggressive medium in cabin and particulate matter can be increasing, thus rotatable parts are threatened.
Three, the tower barrel type of cooling proposed in international application WO01/06121, WO2004/016945, WO2010/069954, as the heat exchanger with the external world using tower barrel, air in cabin is guided to tower cylinder, heat exchange is carried out by tower barrel and cool ambient air at tower cylinder place, but because the heat diffusion area of tower barrel is limited, be difficult to the requirement meeting high-power unit, encapsulation process is not also carried out in tower cylinder and cabin simultaneously, and extraneous corrosive gas and particulate matter enter in cabin and can constitute a threat to key equipment wherein.
Four, transpiration-cooled mode can also be adopted at present to cool cabin, a vaporizer is specifically set in cabin, at engine room cover outer installment condenser, with pipeline, cooler and vaporizer are linked to be a circulatory system, low boiling cooling medium is loaded in system, realize the cooling to air in cabin by the evaporation endothermic of cooling medium, realize cooling medium circulating in pipeline by the variable density of cooling medium in evaporation and condensation process simultaneously.This method effectively improves cooling effect, but cooling medium somewhat expensive, and need various safety valve to be installed to prevent pipeline superpressure, improve operating cost, encapsulation process is not also carried out in cabin simultaneously, and the component in cabin are still easily subject to the harm of external corrosive gas.
Therefore, how to develop the anticorrosion cooling structure of a kind of oceanic winds power generator, both cabin can have been made to realize cooling, and component in cabin can be made again from the harm of the etchant gas in air and particulate matter, are the technical problems that those skilled in the art need solution badly.
Summary of the invention
In view of this, the object of this invention is to provide a kind of anticorrosion cooling structure of offshore wind generating, to reduce the anticorrosive rating of each component in cabin, thus reduce each component cost of production, avoid the particulate matter in air to enter engine room inside simultaneously, reduce the wearing and tearing of the rotatable parts in cabin.
For solving the problems of the technologies described above, the invention provides a kind of anticorrosion cooling structure of offshore wind generating, comprising:
Tower cylinder;
Be arranged at the cabin on described tower cylinder rotationally, and the matching part of described cabin and tower cylinder adopts labyrinth seal mode to seal;
Be arranged at the main shaft of the inside in described cabin rotationally, and the matching part in described main shaft and described cabin adopts labyrinth seal mode to seal, one end that described main shaft is positioned at described nacelle exterior is provided with the wheel hub for installing blade, and described wheel hub is provided with air guide sleeve;
Be arranged at the air cooling system of described engine room inside.
Preferably, being rotatably installed on blade on described wheel hub and the matching part of described air guide sleeve and the matching part in described air guide sleeve and described cabin all adopts labyrinth seal mode to seal.
Preferably, described air cooling system specifically comprises:
Heat exchanger, described heat exchanger is arranged at described engine room inside;
Cooling air channels, described cooling air channels is arranged in described cabin and through described heat exchanger, outlet end and the entry end of described cooling air channels communicate with the external world, and seal with described cabin;
Cooling-air drive unit, described cooling-air drive unit is arranged on cooling air channels or its circulation loop.
Preferably, described cooling-air drive unit is arranged at the outlet end of described cooling air channels.
Preferably, also comprise and be installed on described engine room inside for the hot air of engine room inside being guided to the flow guide device of described heat exchanger.
Preferably, described flow guide device is induced draught fan or fan.
Preferably, the dehumidifier be arranged in described cabin is also comprised.
Preferably, described dehumidifier is rotary dehumidifier.
The anticorrosion cooling structure of offshore wind generating provided by the present invention as can be seen from the above technical solutions, the position that the position rotated because its cabin is relative with tower cylinder and main shaft and cabin rotate relatively all adopts labyrinth seal, what therefore the component of engine room inside achieved with ambient air is isolated, thus decrease corrosive material contained in ambient air to the harm of inner components, therefore the anticorrosive rating of inner components can suitably reduce, thus reduce the cost of the component of engine room inside, technological scheme provided by the present invention is also provided with air cooling system at engine room inside simultaneously, thus the cooling of engine room inside is achieved.This shows that the anticorrosion cooling structure of offshore wind generating provided by the present invention both can make engine room inside component realize at lower cost anticorrosion, the cooling in cabin can be realized again.
Accompanying drawing explanation
Engine room cover portion structure schematic diagram in the anticorrosion cooling structure of the offshore wind generating that Fig. 1 provides for the embodiment of the present invention;
Air guide sleeve in the anticorrosion cooling structure of the offshore wind generating that Fig. 2 provides for the embodiment of the present invention and the relative position schematic diagram of tower cylinder and air guide sleeve and impeller;
Cabin in the anticorrosion cooling structure of the offshore wind generating that Fig. 3 provides for the embodiment of the present invention and the labyrinth seal schematic diagram at tower cylinder position.
Wherein 1 is tower cylinder, and 2 is flow guide device, and 3 is cabin, 4 is cooling medium drive unit, 5 is cooling air channels, and 6 is heat exchanger, and 7 is dehumidifier, 8 is air guide sleeve, 9 is blade, and A is cabin and tower cylinder matching part, and B is air guide sleeve and cabin matching part, C is the matching part of blade and air guide sleeve, and D is sealing tooth.
Embodiment
Core of the present invention is to provide a kind of anticorrosion cooling structure of offshore wind generating, in this cooling structure, the matching part of cabin and tower cylinder and the matching part of cabin and main shaft all adopt the mode of labyrinth seal to realize the sealing of cabin overall, and air cooling system is set in sealed mode cabin, ensureing the sealing achieving cabin overall while engine room inside can cool like this, the component of engine room inside and isolate from outer air, make the component of engine room inside from the impact of the corrosive material in ambient air, therefore appropriateness the anticorrosive rating of engine room inside component can be reduced, reduce the cost of component.
In order to make those skilled in the art person understand the present invention program better, below in conjunction with drawings and embodiments, the present invention is described in further detail.
Please refer to Fig. 1, the engine room cover portion structure schematic diagram in the anticorrosion cooling structure of the offshore wind generating that Fig. 1 provides for the embodiment of the present invention.
The anticorrosion cooling structure of offshore wind generating provided by the present invention, comprising:
Tower cylinder 1;
Be arranged at the cabin 3 on described tower cylinder 1 rotationally, cabin 3 is rotated relative to tower cylinder and is mainly made the blade of offshore wind generating aim at direction of the wind comes from, with to greatest extent by wind energy transformation for electric energy, and described cabin 3 adopts labyrinth seal mode to seal with the matching part A of tower cylinder 1, adopt labyrinthine pattern sealing namely can ensure that cabin 3 realizes relative rotation relative to tower cylinder 1, can ensure that again cabin 3 realizes sealing with the matching part of tower cylinder 1;
Be arranged at the main shaft of the inside in described cabin 3 rotationally, this main shaft is the transmission shaft that wind wheel rotates, main shaft rotates relative to cabin, the matching part in the main shaft thus in the present embodiment and cabin 3 adopts labyrinth seal mode to seal, one end that main shaft is positioned at outside, described cabin 3 is provided with the wheel hub for installing blade 9, wheel hub is provided with air guide sleeve 8, the middle wind wheel in the embodiment of the present invention refers to the assemblying body of blade 9 and the air guide sleeve 8 on wheel hub and wheel hub;
Be arranged at the air cooling system of inside, described cabin 3.
Owing to there is gap between labyrinth sealed structure, without solid contact, needn't lubricate, and allow thermal expansion, can be used in and relatively rotate and require, in the occasion sealed, thus can meet the seal request of cabin 3 and the matching part A of tower cylinder 1 and the matching part in main shaft and cabin 3.
The anticorrosion cooling structure of offshore wind generating provided by the present invention as can be seen from the above technical solutions, the position rotated because its cabin 3 is relative with tower cylinder 1 and the main shaft position that rotate relative to cabin 3 all adopt the mode of labyrinth seal to carry out encapsulation process, what therefore the component of inside, cabin 3 achieved with ambient air is isolated, thus decrease corrosive material contained in ambient air to the harm of inner components, therefore the anticorrosive rating of inner components can suitably reduce, thus the cost of the component of inside, cabin 3 is reduced, technological scheme provided by the present invention is also provided with air cooling system in inside, cabin 3 simultaneously, thus the cooling of inside, cabin 3 is achieved, this shows that the anticorrosion cooling structure of offshore wind generating provided by the present invention both can make cabin 3 inner components realize anticorrosion at lower cost, cabin 3 can be made again to realize cooling.
In order to regulate the rotating speed of wind wheel, the scheme taked at present makes blade 9 rotatable relative to wheel hub, thus make blade 9 change to regulate the rotating speed of wind wheel entirety with the angle of wind direction, because air guide sleeve 8 and wheel hub are geo-stationary, thus blade 9 and air guide sleeve 8 are also relative rotations, wind wheel is overall is rotary motion relative to cabin, as shown in Figure 2.In order to realize the sealing of cabin and wind wheel entirety, thus make the component in wheel hub also from the harm of extraneous corrosive material, also adopt the mode of labyrinth seal to carry out encapsulation process in blade 9 and the matching part C of air guide sleeve 8 and the matching part B in air guide sleeve 8 and cabin 3 in the present embodiment.
More specifically, in the labyrinth seal mode of cabin 3 with tower cylinder 1 matching part A, labyrinth seal mode provided by the present invention is introduced: first ring baffle with multiple sealing tooth D is set on tower cylinder 1, the position relative set that engine room cover 3 coordinates with tower cylinder 1 has second ring baffle of multiple sealing tooth D, sealing tooth on first ring baffle and the sealing tooth on the second ring baffle are staggered, thus form throttle clearance and expansion cavity, realize sealing the throttling of extraneous gas, as shown in Figure 3.Other matching parts all adopt above-mentioned sealing means to seal as the matching part B in air guide sleeve 8 and cabin 3, blade 9 with the matching part C of air guide sleeve 8 and the matching part in main shaft and cabin 3, do not repeat them here.
The size of the throttle clearance that the number of above-mentioned sealing tooth and sealing tooth are staggered to form and expansion cavity is determined according to actual conditions, and generally speaking, the sealing number of teeth is more, and throttle clearance is less, and the effect of labyrinth seal is better.
Cooling system in above-described embodiment specifically comprises:
Heat exchanger 6, it is inner that heat exchanger 6 is arranged at cabin 3, for cooling the high-temperature gas of inside, cabin 3;
Cooling air channels 5, described cooling air channels 5 is arranged at described cabin 3 and through described heat exchanger 6, outlet end and the entry end of described cooling air channels 5 communicate with the external world, and seal with described cabin 3, the sealing at this place refers to cooling air channels 5 and the sealing of the contact position in cabin 3, prevents inside, cabin 3 from communicating with ambient atmosphere;
Cooling-air drive unit 4, described cooling-air drive unit 4 is arranged on cooling air channels 5 or its circulation loop, for realizing the flowing of air, reaches cooling effect.
Heat exchanger 6 is using the intermediate member of the cooling-air heat exchange as hot air in cabin 3 and outside, cabin 3, cooling air channels 5 is through heat exchanger 6, heat exchanger 6 contacts with hot air in cabin 3 simultaneously, heat in such cabin 3 will pass to cooling-air by heat exchanger 6, outside cooling-air will by cooling-air drive unit 4 at cooling air channels 5 internal circulation flow, thus the heat in cabin 3 is derived endlessly, realize the cooling of inside, cabin 3, encapsulation process has been carried out at the position contacted with cabin 3 due to cooling air channels 5, so cabin 3 is still sealing cabin, can not communicate with ambient atmosphere, thus avoid extraneous corrosive gas and particulate material to enter wherein.
In order to optimize technological scheme proposed by the invention further, cooling air channels 5 internal surface in the present embodiment and cooling-air drive unit 4 are provided with corrosion-resistant coating, concrete corrosion-resistant coating can be fluorocarbon resin layer, or for spelter coating etc. can realize the coating of anti-corrosion function, or tumble in corrosion protection inside liner at the inwall of cooling air channels 5 and cooling-air drive unit 4, all can realize the object in the working life extending cooling air channels 5 and cooling-air drive unit 4, above-mentioned cooling-air drive unit 4 can be blower or induced draught fan.
In order to make the flowing of cooling-air more smooth and easy, the cooling-air drive unit 4 in the present embodiment is preferably arranged on the outlet end of described cooling air channels 5.
In order to the heat in the air be gathered in cabin 3 is delivered to above heat exchanger 6, make the homogeneous temperature at each position in cabin 3, the present embodiment has also installed the flow guide device 2 for hot air being 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 and make the hot air in cabin 3 form circulation, and carry out heat exchange through heat exchanger 6, make the heat exchange of inside, cabin 3 more abundant, temperature is more even.
Because its essence of the salt spray corrosion in cabin 3 is exactly electrochemical corrosion, and one of Main Means preventing electrochemical corrosion is exactly keep air oxygen detrition, the generation of electrochemical corrosion will be stoped like this, therefore, in order to improve anticorrosion ability further, wind-driven generator in the present embodiment preferably also adds dehumidifier 7 in cabin 3, this dehumidifier 7 can turn dehumidifier for wheel, the principle of rotary wheel dehumidifying utilizes some special materials, as silica gel, molecular sieve, the article such as lithium chloride, there is very strong moisture absorption, constantly from surrounding atmosphere, draw water vapor, and be discharged to nacelle exterior, the cooperation place that wheel turns drain opening that dehumidifier communicates with outside, cabin 3 and cabin 3 also realizes sealing, or other can also be adopted can to realize removing the dehumidifier of moisture in air, these dehumidifiers are device well known to those skilled in the art, do not repeat them here.
Above the anticorrosion cooling structure of offshore wind generating provided by the present invention is described in detail.Apply specific case herein to set forth principle of the present invention and mode of execution, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (6)
1. an anticorrosion cooling structure for offshore wind generating, is characterized in that, comprising:
Tower cylinder (1);
Be arranged at the cabin (3) on described tower cylinder (1) rotationally, and described cabin (3) adopt labyrinth seal mode to seal with the matching part A of tower cylinder (1);
Be arranged at the main shaft of the inside in described cabin (3) rotationally, and the matching part of described main shaft and described cabin (3) adopts labyrinth seal mode to seal, described main shaft is positioned at outside one end, described cabin (3) and is provided with wheel hub for installing blade (9), described wheel hub is provided with air guide sleeve (8);
Wherein, described labyrinth seal mode is specially:
Described tower cylinder (1) or main shaft arrange first ring baffle with multiple sealing tooth, there is in the matching part relative set of described cabin (3) and described tower cylinder (1) or main shaft the second ring baffle of multiple sealing tooth, and the sealing tooth on described first ring baffle and the sealing tooth on described second ring baffle are staggered;
Be arranged at the air cooling system that described cabin (3) is inner, wherein, described air cooling system specifically comprises:
Heat exchanger (6), it is inner that described heat exchanger (6) is arranged at described cabin (3);
Cooling air channels (5), described cooling air channels (5) to be arranged in described cabin (3) and through described heat exchanger (6), outlet end and the entry end of described cooling air channels (5) communicate with the external world, and seal with described cabin (3);
Cooling-air drive unit (4), described cooling-air drive unit (4) is arranged on cooling air channels (5) or its circulation loop;
Wherein, the inwall of described cooling air channels (5) internal surface and described cooling-air drive unit (4) tumbles in and is provided with corrosion-resistant coating;
Being rotatably installed on the blade (9) on described wheel hub all adopts labyrinth seal mode to seal with the matching part C of described air guide sleeve (8) and the matching part B in described air guide sleeve (8) and described cabin (3).
2. the anticorrosion cooling structure of offshore wind generating according to claim 1, is characterized in that, described cooling-air drive unit (4) is arranged at the outlet end of described cooling air channels (5).
3. the anticorrosion cooling structure of offshore wind generating according to claim 2, it is characterized in that, also comprise the flow guide device (2) being installed on inside, described cabin (3) and being used for the hot air that cabin (3) are inner to guide to described heat exchanger (6).
4. the anticorrosion cooling structure of offshore wind generating according to claim 3, is characterized in that, described flow guide device (2) is induced draught fan or fan.
5. the anticorrosion cooling structure of the offshore wind generating according to claim 1-4 any one, is characterized in that, also comprises the dehumidifier (7) be arranged in described cabin (3).
6. the anticorrosion cooling structure of offshore wind generating according to claim 5, is characterized in that, described dehumidifier (7) is 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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| 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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| CN102661251B true CN102661251B (en) | 2015-04-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020127206A1 (en) * | 2018-12-21 | 2020-06-25 | Cotes A/S | Windturbine dehumidifier system comprising secondary wind power source |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN108266337A (en) * | 2016-12-30 | 2018-07-10 | 北京金风科创风电设备有限公司 | wind generating set and cooling method thereof |
| CN107420273B (en) * | 2017-08-14 | 2020-09-25 | 山东中车风电有限公司 | Environment control mechanism, system and application of offshore wind generating set |
| 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 |
| CN113833617B (en) * | 2021-09-16 | 2023-05-02 | 中国华能集团清洁能源技术研究院有限公司 | Cabin dehumidification system and method for offshore wind turbine generator |
| 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 |
| 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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| DE102005029463B4 (en) * | 2005-06-24 | 2015-10-29 | Senvion Gmbh | Tower humidification of a wind energy plant |
| TW201126063A (en) * | 2010-01-20 | 2011-08-01 | zhang-hui Tong | Wind power generator having waterproof structure |
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Address after: North District 401122 Chongqing City No. 30 garden Jinyu Road Patentee after: China Shipbuilding Heavy Industry offshore wind power Limited by Share Ltd Address before: North District 401122 Chongqing City No. 30 garden Jinyu Road Patentee before: CSIC (Chongqing) Haizhuang Windpower Equipment Co., Ltd. |