CN110821762A - Wind turbine blade gas-thermal deicing device - Google Patents
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- CN110821762A CN110821762A CN201911328344.4A CN201911328344A CN110821762A CN 110821762 A CN110821762 A CN 110821762A CN 201911328344 A CN201911328344 A CN 201911328344A CN 110821762 A CN110821762 A CN 110821762A
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- 108010066114 cabin-2 Proteins 0.000 description 8
- 239000010410 layer Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 239000004519 grease Substances 0.000 description 6
- 238000005485 electric heating Methods 0.000 description 5
- 238000010248 power generation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000008014 freezing Effects 0.000 description 4
- 238000007710 freezing Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
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- 230000009286 beneficial effect Effects 0.000 description 2
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/40—Ice detection; De-icing means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/60—Cooling or heating of wind motors
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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 wind turbine generator blade gas-heat deicing device, which comprises: the hot air output device is arranged in the engine room at the top end of the tower barrel of the wind turbine generator; the single-layer ventilating duct is connected with an air outlet of the hot air output device and used for penetrating through a middle channel of the fan generator and extending to a fan hub; the single-layer multi-channel rotary joint is arranged in the fan hub; the blade ventilating duct is arranged in the inner cavity of the fan blade; the single-layer multi-channel rotary joint is respectively connected with the single-layer ventilating duct and the blade ventilating duct. The wind turbine blade gas-heat deicing device provided by the invention has the advantages of high reliability, no risk of lightning damage, strong maintainability and low maintenance cost; the fan blade deicing can be safely, economically and conveniently completed.
Description
Technical Field
The invention relates to the technical field of wind power generation, in particular to a wind turbine blade gas-heat deicing device.
Background
Wind power generation becomes an important energy structure in our country, the diameter of a wind wheel is rapidly increased along with the rapid update of a wind power generation technology, the traditional low wind speed area in the middle and south areas of China becomes an area for competitive development of various wind power developers, however, the problems of winter icing of wind turbine generators in the provinces of cloud, precious, Hunan, Hubei, Jiangxi and the like in the area are generally caused by the weather of winter moistening, much freezing rain, rime and the like.
When wind power generation is operated under cold weather conditions, blades of a fan are easy to freeze, and the phenomenon can cause the following hazards: the blade freezes and can the original aerodynamic characteristics of destruction blade of different degree, reduces power output, need to be shut down when serious to reduce the unit generated energy. When the blades are frozen, the extra load of the wind turbine set can be increased, and the service life of the wind turbine set can be shortened by long-term load operation. When the blades are frozen, the ice blocks can be thrown off, and the risk of harming the personal safety and the equipment safety is caused.
However, according to the classification of IEA (international energy agency) on the global freezing region level, the regions with the most severe global icing are mainly concentrated in europe, and the regions in china have relatively light overall icing and relatively severe local icing. Therefore, the wind turbine generator deicing technology needs to have the advantage of low cost when popularized in the domestic market, or the marketization difficulty is high.
According to the existing data display, the active deicing technology of the fan blade mainly comprises two types: electric heating deicing and gas heating deicing. The electric heating deicing is mainly characterized in that a layer of electric heating medium is coated on the outer surface of the blade, and the gas-heated deicing is mainly characterized in that a heating system (a heater and a blower) is arranged in an inner cavity of the blade, and air is heated and then conveyed to the inner cavity of the blade. The invention belongs to a gas heating deicing technology.
The technical advantages of gas heating deicing include high reliability, no risk of lightning damage, strong maintainability of the whole system and low maintenance cost.
The invention discloses a rotor blade deicing method, which is applied to the patent of German Senvean GmbH, publication No. CN105683566A, and aims to heat the blade to deice by installing a heating device in the blade root or a hub or a nacelle near the blade root, extending a ventilation pipeline for conveying hot air to the blade tip through a blade root baffle by a heater, forming an integral closed space by the heating device and a blade inner cavity, dividing the blade inner cavity into two areas by utilizing a blade inner web plate, forming air flow circulation in the closed space by the hot air, and arranging an opening on the blade inner hot air ventilation pipeline to improve the heat conversion efficiency. The method has the disadvantages that the heater can only heat one rotor blade when in work, which is very unfavorable for the dynamic deicing of the fan in the running process, because under the condition of freezing climate, three blades of the fan (at present, three blades are basically adopted by a high-power horizontal-axis wind driven generator) can be simultaneously frozen, if one blade is just deiced, the operation is carried out, the imbalance of the three rotor blades is easily caused, and the fan can be vibrated to aggravate the collapse accident under severe conditions. In addition, the method needs to supply power to the heater through the hub slip ring, the requirement on the power level of the slip ring is high, and the cost is high.
The patent applied by Chongqing university, publication No. CN102003353A, discloses a large-scale wind driven generator blade deicing method, which adopts a mode of combining gas heat deicing and blade type flutter to perform blade deicing: the heating systems are all installed inside the blades, each blade forms a closed independent space, the blades are heated firstly, the melting state of ice covered on the surfaces of the blades is detected, and then the flutter effect of a unit caused by acceleration and deceleration is formed by controlling the pitch and yaw speed of the fan to assist the blades in deicing. The disadvantages of this method are: the unit flutter may cause mechanical damage to related components (such as yaw and pitch reducers, yaw motors, pitch motors and the like), and the service life is reduced; the heater is installed inside the blade, and three heaters rotate along with the impeller, has the risk of droing, and the heater power supply must pass through the wheel hub sliding ring, and is with great costs. In conclusion, the method can save energy, improve the deicing effect, and has the advantages of high overall cost, low safety and reliability of the heater and influence on the service life of related parts due to unit flutter.
The invention discloses a wind generating set and a blade deicing system thereof (remark: the patent belongs to the unit and the invention of the unit) and is applied by Shenzhen division company of Huarun power investment Limited, and the publication number CN 107676233A. However, the inner layer pipeline of the double-layer ventilating pipeline adopted in the invention is used for supplying air to the blades, and the outer layer pipeline is used for returning air to the interior of the engine room; because cabin to wheel hub space is narrow and small, double-deck pipeline design and manufacturing are very difficult, and especially double-deck multichannel rotary joint is because of guaranteeing certain air flow because of needs, and the volume is very huge, is unfavorable for installation and construction, and the size of inlayer pipeline receives the restriction to restricted air flow, leaded to heating deicing effect not good. And the design, manufacture and construction costs of the double-layer conveying pipeline and the double-layer multi-channel rotary joint adopted by the invention are higher, which is not beneficial to market popularization.
Therefore, how to safely, economically and conveniently deice the wind turbine blades becomes a technical problem to be solved by the technical personnel in the field.
Disclosure of Invention
The invention aims to provide a wind turbine blade gas-heat deicing device. The device has high reliability, stable and safe operation and low operation and maintenance cost, and can safely, economically and conveniently finish the deicing of the fan blade.
In order to achieve the above object, the present invention provides a wind turbine blade gas-thermal deicing device, including:
the hot air output device is arranged in the engine room at the top end of the tower barrel of the wind turbine generator;
the single-layer ventilating duct is connected with an air outlet of the hot air output device and used for penetrating through a middle channel of the fan generator and extending to a fan hub;
the single-layer multi-channel rotary joint is arranged in the fan hub;
the blade ventilating duct is arranged in the inner cavity of the fan blade;
the single-layer multi-channel rotary joint is respectively connected with the single-layer ventilating duct and the blade ventilating duct.
Optionally, the hot air output device comprises a heater and a blower connected with an air inlet of the heater.
Optionally, the single-layer ventilation duct is a heat-resistant hose.
Optionally, the single-layer ventilation duct is detachably connected with the heater and the single-layer multi-channel rotary joint.
Optionally, the periphery of the heater is provided with a thermally insulating bag to isolate the cabin space behind the heater.
Optionally, the air outlet of the blade ventilation duct is provided with an anti-backflow baffle plate, and the anti-backflow baffle plate is fixedly connected between a blade web and a blade shell of the fan blade.
Optionally, a first temperature sensor is arranged inside the single-layer ventilation duct, a second temperature sensor for detecting the return air temperature is arranged between the outside of the single-layer ventilation duct and the middle channel of the fan generator, and the first temperature sensor and the second temperature sensor are connected to a temperature control mechanism of the heater;
when the first temperature sensor detects that the outlet air temperature is lower than a first preset value, the temperature control mechanism controls the heater to increase the output power; when the second temperature sensor detects that the return air temperature is higher than a second preset value, the temperature control mechanism controls the heater to reduce the output power.
Optionally, the fan blade further comprises a third temperature sensor arranged on the outer surface layer of the fan blade, and the third temperature sensor is connected with the heater;
and when the third temperature sensor detects that the temperature of the fan blade is lower than a third preset value, the heater starts heating.
Compared with the background art, the wind turbine blade air-heat output device provided by the invention has the advantages that the hot air output device is arranged in the engine room at the top end of the wind turbine tower, and hot air is conveyed to the interior of the wind turbine blade through the single-layer ventilating duct, the single-layer multi-channel rotary joint and the blade ventilating duct to carry out air-heat deicing, so that the risk of lightning stroke of an electric heating mechanism arranged in the wind turbine blade is avoided, the safety performance is improved, all the wind turbine blades can be deiced simultaneously, the phenomenon that the deicing of the wind turbine blades is uneven is avoided, and the stability.
More importantly, the single-layer ventilating duct and the single-layer multi-channel rotary joint are adopted, so that the pipeline design is convenient, the size of the single-layer ventilating duct can be arranged in the limited space in the middle channel of the fan generator, the requirement on the air supply flow is met, hot air sequentially passes through the single-layer ventilating duct, and the operation and maintenance cost of the air-heated deicing device is reduced; the single-layer multi-channel rotary joint and the blade ventilating pipelines respectively arranged in the fan blades are connected with the air return pipeline through a pipeline, the air return pipeline can flow back to the engine room through the open manhole cover plate opening of the root part of the fan blades and the gaps between the single-layer ventilating pipelines and the middle channels, the engine room is heated, the higher temperature of the engine room in the freezing period is guaranteed, and the lubricating effect of grease in the hub and the engine room is favorably improved. The single-layer ventilating duct and the single-layer multi-channel rotary joint reduce the modification cost of the air-heated deicing device; the gas-heated deicing device can realize gas-heated deicing by outputting hot air to the fan blades and the engine room through the hot air output device, the hot air output device is arranged in the engine room, the arrangement of the hot air output device in the fan blades is prevented from being damaged by lightning stroke, and the deicing is economical, convenient and safe.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram of a wind turbine blade air-heated deicing device provided by an embodiment of the invention;
fig. 2 is a schematic view of the arrangement of the blade ventilation duct within the fan blade.
Wherein:
the wind power generation system comprises a tower tube 1, a cabin 2, a generator 3, a hub 4, a fan blade 5, a blade web 6, an air blower 7, a heater 8, a single-layer ventilation pipeline 9, a single-layer multi-channel rotary joint 10, a blade ventilation pipeline 11 and an anti-backflow baffle 12.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic view of a wind turbine blade air-heating deicing device according to an embodiment of the present invention, and fig. 2 is a schematic view of a blade ventilation duct arranged in a fan blade, where the direction of an arrow indicates the flow direction of hot air.
The wind turbine blade air-heating deicing device provided by the invention comprises a hot air output device, a single-layer ventilation pipeline 9, a single-layer multi-channel rotary joint 10 and a blade ventilation pipeline 11. The hot air output device is arranged in an engine room 2 of the wind turbine generator, and the engine room 2 is positioned at the top end of the tower barrel 1; the single-layer ventilating duct 9 penetrates through a middle channel of the fan generator 3 and extends to the hub 4, the single-layer multi-channel rotary joint 10 is arranged in the hub 4, the single-layer multi-channel rotary joint has the function of connecting the single-layer ventilating duct 9 and the blade ventilating duct 11, hot air conveying can be completed in a rotary state, deicing of the fan blades 5 in a running state is realized, and convenience is brought; the blade ventilating duct 11 outputs the hot air to the inside of the fan blades 5, and plays a role in heating and deicing the fan blades 5. Because the middle channel space of the fan generator 3 is limited, the single-layer channel can meet the blade deicing air supply requirement and also facilitate rotary air supply, air return is carried out through the gap between the manhole cover plate opening of the fan blade 5, the single-layer ventilating duct 9 and the middle channel, the interior of the engine room 2 is heated, and the lubricating performance of lubricating oil is ensured.
The wind turbine blade thermal deicing device provided by the invention is described in more detail below with reference to the accompanying drawings and specific embodiments.
In a specific embodiment provided by the invention, the hot air output device specifically adopts a combination form of a heater 8 and a blower 7, the air is heated by the heater 8, the blower 7 is connected with an air inlet of the heater 8, a single-layer ventilation pipeline 9 is connected with an air outlet of the heater 8, and the blower 7 provides sufficient power for hot air output and plays a role in increasing air supply flow. The heater 8 adopts the heater 8 of ordinary electric heating formula, and the heater 8 is inside to be provided with the temperature control mechanism, realizes adjusting hot-blast output temperature through the output power of adjustment heater 8, satisfies the deicing demand under the different weather. The heater 8 is fixed in the cabin 2, and has reduced the cabin 2 and has played certain electrostatic shielding effect, and the height of cabin 2 is lower than the height of blade, has reduced the risk of thunderbolt damage. The heater 8 and its temperature control mechanism are the existing basis and will not be expanded in detail here.
The hot air output device can adopt the combination of the heater 8 and the air blower 7, and can also adopt the combination of the heater 8 and the induced draft fan as required, and what is different from that, the induced draft fan is arranged at the air outlet of the heater 8, and under the condition, the single-layer ventilation pipeline 9 is connected at the air outlet of the induced draft fan.
The single-layer multi-channel rotary joint 10 is arranged in a hub 4 of the wind turbine generator and can rotate along with the hub 4, so that hot air transfer is completed in a rotating state. The number of the multiple channels corresponds to the number of the fan blades 5 of the wind turbine; when the number of the fan blades 5 is n, that is, the number of the blade ventilation ducts 11 is n, the single-layer multi-channel rotary joint 10 has n +1 joints, wherein 1 joint is connected with the single-layer ventilation duct 9, and the other n joints are in one-to-one corresponding adapter connection with the blade ventilation ducts 11 arranged in the fan blades 5. Since the number of fan blades 5 is typically three, the number of joints of the single-layer multi-channel rotary joint 10 is typically four.
For the convenience of maintenance, the single-layer multi-channel rotary joint 10, the single-layer ventilation duct 9 and the blade ventilation duct 11 are detachably connected. For example, the single-layer ventilation duct 9 and the blade ventilation duct 11 may be heat-resistant hoses, such as teflon tubes or nitrile rubber tubes, which are convenient for assembly connection with the single-layer multi-channel rotary joint 10 and the air outlets of the heater 8, and also beneficial for maintaining a certain structural stability under hot air delivery. Of course, the single-layer ventilation duct 9 and the vane ventilation duct 11 may also be made of metal ducts, and are assembled and connected with the heater 8 and the single-layer multi-channel rotary joint 10 through flange structures.
When individual layer multichannel rotary joint 10 and blade air pipe 11 can dismantle the connection, can also demolish blade air pipe 11 and realize the inside heating to wheel hub 4, under extremely abominable weather condition, can directly utilize heater 8 to heat wheel hub 4 inside and cabin 2 inside, prevent that wheel hub 4 and cabin 2 internal mechanical parts from taking place fan trouble because of lubricating grease annual height.
In order to improve the heating efficiency of the heater 8 and reduce the waste of heat in hot air, when the air-heated deicing device is installed, a heat insulation layer, such as a heat insulation bag and the like, is arranged on the periphery of the heater 8, the heater 8 is separated from the rear part of the cabin 2 and a space which does not contain a rotating structure and lubricating grease through the heat insulation bag, the loss of heat in return air is reduced, the heat of the return air is fully utilized, the heating temperature in the cabin 2 is ensured by the relatively low output power of the heater 8, and the lubricating performance of the lubricating grease is ensured.
The blade ventilation duct 11 is further provided with reference to fig. 2, so that the hot air can be conveniently conveyed to the blade tip and then flows back to the hub 4 from the open manhole cover plate opening of the blade root, and the tail end of the blade ventilation duct 11 is further provided with an anti-backflow baffle 12, so that the backflow phenomenon of the hot air generated in the blade is reduced. Particularly, the anti-backflow baffle 12 can be fixed between the blade web 6 and the blade shell by welding, and the blade ventilation duct 11 can be provided with a through hole for fixing in a penetrating manner by arranging the anti-backflow baffle 12.
In another specific embodiment provided by the invention, in order to facilitate the control of the output power of the heater 8, namely the temperature of the hot air, the wind turbine blade air-heating deicing device is further provided with a temperature sensor. A first temperature sensor is arranged in the single-layer ventilation pipeline 9 to detect the wind temperature conveyed to the hub 4 and the blades, and a second temperature sensor for detecting the return air temperature is arranged between the outer surface layer of the single-layer ventilation pipeline 9 and the middle channel of the generator 3. The first temperature sensor and the second temperature sensor are connected with a temperature control mechanism of the heater 8; when the first temperature sensor detects that the air supply temperature is lower than a first preset value, the air supply temperature is lower, the deicing requirement of the blades cannot be met, and the temperature control mechanism controls the heater 8 to increase the output power so as to improve the air supply temperature; when the second temperature sensor detects that the return air temperature is higher than the second preset value, the air supply temperature is over high, the return air temperature after the blades are deiced is still high, energy waste is caused, the best lubricating effect of lubricating grease is kept, and at the moment, the temperature control mechanism controls the heater 8 to reduce the output power.
The first preset value may be set to about 70 deg.c and the second preset value may be set to about 40 deg.c, and of course, the first preset value and the second preset value may be flexibly set according to different weather conditions of different regions and characteristics of the lubricating grease inside the nacelle 2.
In order to conveniently control the starting of the heater 8, a third temperature sensor can be fixed on the outer surface layer of the fan blade 5, the third temperature sensor is connected with a start-stop control switch of the heater 8 and the blower 7, and when the third temperature sensor detects that the external temperature is lower than a third preset value, such as 0 ℃, the heater 8 and the blower 7 are automatically started to heat the fan blade 5 to finish the deicing and defrosting. The working principle of the first temperature sensor, the second temperature sensor, the third temperature sensor, the temperature control mechanism and the start control switch can refer to the prior art, and the invention mainly realizes the automatic adjustment and the automatic start and stop of the power of the heater 8 through the arrangement of the connection relation.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The wind turbine blade gas-heat deicing device provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (8)
1. The utility model provides a wind turbine generator system blade gas hot defroster which characterized in that includes:
the hot air output device is arranged in the engine room (2) at the top end of the tower barrel (1) of the wind turbine generator;
the single-layer ventilating duct (9) is connected with an air outlet of the hot air output device, and the single-layer ventilating duct (9) is used for penetrating through a middle channel of the fan generator (3) and extending to the fan hub (4);
a single-layer multi-channel rotary joint (10) arranged in the fan hub (4);
a blade ventilating duct (11) arranged in the inner cavity of the fan blade (5);
the single-layer multi-channel rotary joint (10) is respectively connected with the single-layer ventilating duct (9) and the blade ventilating duct (11).
2. Wind turbine blade gas thermal de-icing arrangement according to claim 1, characterised in that the hot air output device comprises a heater (8) and a blower (7) connected to the air inlet of the heater (8).
3. Wind turbine blade air-heated deicing device according to claim 2, characterized in that said single-layer ventilation duct (9) is a heat-resistant hose.
4. Wind turbine blade air-thermal de-icing device according to claim 2, characterized in that said single-layer ventilation duct (9) is removably connected to said heater (8) and to said single-layer multi-channel rotary joint (10).
5. Wind turbine blade hot deicing device according to claim 2, characterized in that the periphery of the heater (8) is provided with a heat insulation bag to isolate the cabin (2) space behind the heater (8).
6. Wind turbine blade air-heating deicing device according to claim 5, characterized in that an anti-backflow baffle (12) is arranged at the air outlet of the blade ventilation duct (11), and the anti-backflow baffle (12) is used for being fixedly connected between the blade web (6) and the blade shell of the fan blade (5).
7. The hot deicing device for wind turbine blades as claimed in any one of claims 2 to 6, wherein a first temperature sensor is arranged inside the single-layer ventilation duct (9), a second temperature sensor for detecting the return air temperature is arranged between the outside of the single-layer ventilation duct and the middle channel of the fan generator (3), and the first temperature sensor and the second temperature sensor are connected to a temperature control mechanism of the heater (8);
when the first temperature sensor detects that the outlet air temperature is lower than a first preset value, the temperature control mechanism controls the heater (8) to increase the output power; when the second temperature sensor detects that the return air temperature is higher than a second preset value, the temperature control mechanism controls the heater (8) to reduce the output power.
8. Wind turbine blade hot gas deicing device according to claim 7, characterized in that it further comprises a third temperature sensor for being arranged on the outer surface layer of the wind turbine blade (5), said third temperature sensor being connected to said heater (8);
and when the third temperature sensor detects that the temperature of the outer surface layer of the fan blade (5) is lower than a third preset value, the heater (8) starts heating.
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| CN201911328344.4A CN110821762A (en) | 2019-12-20 | 2019-12-20 | Wind turbine blade gas-thermal deicing device |
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| CN201911328344.4A CN110821762A (en) | 2019-12-20 | 2019-12-20 | Wind turbine blade gas-thermal deicing device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112128067A (en) * | 2020-10-20 | 2020-12-25 | 建德林欣新能源科技有限公司 | Efficient cooling wind driven generator capable of automatically carrying out blade deicing operation |
| CN113074093A (en) * | 2021-04-29 | 2021-07-06 | 中国华能集团清洁能源技术研究院有限公司 | Wind generating set with heat pump self-deicing system and working method thereof |
| CN113623150A (en) * | 2021-09-08 | 2021-11-09 | 叶县国博大石崖风力发电有限公司 | Blade deicing mechanism for wind driven generator |
| WO2023139859A1 (en) * | 2022-01-21 | 2023-07-27 | 三菱重工業株式会社 | Electric propulsion device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023139859A1 (en) * | 2022-01-21 | 2023-07-27 | 三菱重工業株式会社 | Electric propulsion device |
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