CN116877362A - Device and method for preventing and removing ice of wind power blade through microwaves - Google Patents
Device and method for preventing and removing ice of wind power blade through microwaves Download PDFInfo
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- CN116877362A CN116877362A CN202310729523.9A CN202310729523A CN116877362A CN 116877362 A CN116877362 A CN 116877362A CN 202310729523 A CN202310729523 A CN 202310729523A CN 116877362 A CN116877362 A CN 116877362A
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000005855 radiation Effects 0.000 claims abstract description 50
- 239000011248 coating agent Substances 0.000 claims abstract description 16
- 238000000576 coating method Methods 0.000 claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 238000012544 monitoring process Methods 0.000 claims description 8
- 239000003973 paint Substances 0.000 claims description 8
- 230000005484 gravity Effects 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000010248 power generation Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
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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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- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Wind Motors (AREA)
Abstract
The invention relates to the field of wind power generation, in particular to a device and a method for preventing and removing ice of wind power blades by microwaves. According to the device for preventing and removing ice of the wind turbine blade, provided by the invention, microwaves emitted by the microwave source and the radiation antenna are uniformly radiated on the surface of the front edge side of the blade through the distributed layout planning and the hot zone planning of the microwave radiation antenna, the microwave-absorbing coating sprayed on the surface of the blade absorbs the microwaves to raise the temperature, and the ice layer at the interface is melted. In the microwave heating process, the blade body structure and air do not absorb microwaves, energy loss is not generated, and microwave leakage can be effectively prevented by adding the shielding layer, so that the utilization rate of microwave energy is very high, the heating efficiency is very high, the deicing speed is high, and the running cost is low.
Description
Technical Field
The invention relates to the field of wind power generation, in particular to a device and a method for preventing and removing ice of wind power blades by microwaves.
Background
The microwave deicing technology for the wind turbine blade is a novel deicing technology, and can effectively solve the problem of icing of the wind turbine blade. The most easily frozen and most severely frozen areas of the wind turbine blade are concentrated on the front edge side of the blade, especially the area from the middle part of the blade to the blade tip. The technology is gradually researched in recent years, and a plurality of microwave deicing and preventing technical schemes are developed successively. The research direction of the microwave coating is mainly divided into a microwave part and a wave-absorbing coating part, wherein the microwave part is usually composed of a microwave generation control device and a microwave reflecting device.
At present, the microwave deicing technology is mostly in the experimental research stage, and related papers are studied: joachim et al prepared a carbon nanotube coating and performed a microwave deicing test; zhang et al conducted preliminary studies on metamaterial wave absorbers; luo et al designed external wind turbine blade deicing equipment based on microwaves and ultrasound; the feasibility of microwave deicing of the wind power blade is demonstrated. The related patent technologies mainly comprise: the unmanned aerial vehicle is subjected to microwave deicing, and an external microwave deicing device is arranged, but the unmanned aerial vehicle is required to be stopped, and an anti-icing function cannot be realized; the deicing function can be realized by installing a microwave source in the inner cavity of the blade to deicing, and the deicing device can automatically monitor and operate in the normal operation state of the unit, but the related technology is not researched aiming at the uniform microwave radiation mode.
Therefore, aiming at the research that the conventional microwave deicing technology lacks uniform radiation of a microwave part, the invention determines the distributed layout planning and the hot zone planning of microwave radiation antennas on the basis of the deicing technology of installing a microwave source in the blades of the wind turbine generator, thereby realizing uniform radiation of microwaves in the blade cavity to the surface of the front edge side of the blade which is easy to freeze and uniform heating through the wave-absorbing coating.
Disclosure of Invention
The invention provides a device and a method for preventing and removing ice of a wind power blade by microwaves.
The technical scheme of the invention is as follows:
a device for preventing ice and removing ice of a wind power blade by microwaves comprises a microwave source, a microwave control module and a radiation antenna; high-power cables, steering engine control modules and wave-absorbing paint;
three high-power microwave sources are uniformly arranged at the blade root positions of the blades of the wind turbine generator set in a 120-degree interval mode; the microwave control module is arranged in the control cabinet of the wind turbine generator and is electrically connected with the microwave source and used for controlling the microwave source to emit microwaves to the front edges of blades of the wind turbine generator; and the three radiating antennas radiate electromagnetic waves emitted by the microwave source to the specific direction of the inner cavity of the blade. According to the inner cavity structure of the blade and the ice layer coverage area in the actual icing process, one radiating antenna is arranged at the blade root part of the inner cavity of the blade of the wind turbine generator, and the other two radiating antennas are arranged at the front edge side of the middle area of the inner cavity of the blade, wherein the distance between the radiating antennas and the blade root is 40% of the length of the blade; in addition, an equal weight fitting is mounted on the opposite side of the antenna to maintain the blade overall load balance. Through the arrangement mode, the blade heating zone is divided into a zone close to the blade root, a zone from the blade root to 40% close to the blade root and a blade tip zone, so that the hot zone planning of the microwave heating zone is realized. Electromagnetic wave radiation of the blade close to the blade root and electromagnetic wave radiation from the middle part of the blade to the ice-coating area of the blade tip are realized by controlling the antenna to scan back and forth.
The high-power cable is used for leading out a radiation antenna, one end of the high-power cable is connected with a microwave source emission port, and the other end of the high-power cable is connected with the radiation antenna;
the steering engine is arranged at the radiation antenna, so that the orientation of the antenna is adjustable, and a hot zone arranged in the blade icing area is uniformly radiated;
the steering engine control module is arranged in the wind turbine generator control cabinet and is electrically connected with the steering engine, and is used for defining a hot zone according to icing conditions and controlling the steering engine to adjust the orientation of the radiation antenna;
the wave-absorbing paint is uniformly coated on the outer paint of the blade so as to absorb microwaves from the radiation antenna, and the temperature is raised to melt the ice layer contacted with the outer surface of the blade.
A method of a wind power blade microwave deicing device, comprising the steps of:
step 1, a monitoring system monitors the icing condition of the blades of the wind turbine generator in real time, and sends deicing signals when the icing condition reaches set conditions;
step 2, a steering engine control module delimits a hot zone according to the icing condition of the monitored blade, and respectively controls the rotation of steering engines on a plurality of radiation antennas to enable the radiation antennas to face the hot zone;
and 3, after receiving the deicing signal, the microwave control module controls the microwave source to work, and the radiation antenna transmits microwaves to the inner cavity of the blade in a back and forth scanning mode.
And 4, absorbing microwaves from the radiation antenna by the wave-absorbing coating, heating the hot zone, and melting the ice layer at the interface, so that the ice coating falls off under the action of gravity and centrifugal force.
The invention has the beneficial effects that:
(1) According to the device for preventing and removing ice of the wind turbine blade, provided by the invention, microwaves emitted by the microwave source and the radiation antenna are uniformly radiated on the surface of the front edge side of the blade through the distributed layout planning and the hot zone planning of the microwave radiation antenna, the microwave-absorbing coating sprayed on the surface of the blade absorbs the microwaves to raise the temperature, and the ice layer at the interface is melted.
(2) According to the device for preventing and removing ice of the wind turbine blade by microwaves, provided by the invention, as the ice removing mode does not need to modify the blade structure, only a microwave system is required to be installed in the inner cavity of the blade, and the wave-absorbing coating is coated on the outer surface of the front edge of the blade, the increased load is small, and the aerodynamic characteristics of the blade cannot be changed, so that the ice removing device is suitable for technical improvement of the existing stock wind turbine blade and the newly manufactured blade.
(3) According to the device for preventing and removing ice of the wind turbine blade, provided by the invention, in the microwave heating process, the blade body structure and air do not absorb microwaves, no energy loss is generated, and the microwave leakage can be effectively prevented by adding the shielding layer, so that the utilization rate of microwave energy is very high, the heating efficiency is very high, the ice removing speed is high, and the running cost is low.
Drawings
FIG. 1 is a working principle diagram of a microwave deicing device for a wind turbine blade;
FIG. 2 is a schematic diagram of the whole structure of a microwave deicing device for a wind turbine blade;
FIG. 3 is a schematic view of the installation structure of the blade root microwave source.
Detailed Description
FIG. 1 is a schematic diagram of the operation of a blade microwave deicing device. As shown in FIG. 1, firstly, after a monitoring system monitors that a wind turbine generator blade is frozen, a deicing signal is sent out; then, the steering engine adjusts the orientation of the radiation antenna to enable the radiation antenna to face the defined hot area, then the microwave source generates microwaves, the microwave absorbing coating sprayed on the surface of the blade absorbs the microwaves, the hot area is heated, the ice layer at the interface is melted, and the ice layer falls off under the action of gravity and centrifugal force.
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawings. The wind power blade ice prevention and removal device comprises:
a microwave source: three microwave sources are uniformly arranged at the blade root positions of the blades of the wind turbine generator set in a 120-degree interval mode;
radiation antenna: the radiation antenna is arranged on the inner surface of the blade root at the front edge side of the blade of the wind turbine generator to convert the input electric energy into radiated microwave energy; so as to uniformly radiate the icing area of the blade close to the blade root, and installing an equal weight fitting on the opposite side of the icing area so as to keep the overall load balance of the blade; the two radiation antennas are arranged on the inner surface of the front edge side of the middle area of the blade, and the distance between the two radiation antennas and the blade root is 40% of the length of the blade, so that the ice-covered area from the middle of the blade to the blade tip is uniformly radiated;
high-power cable: one end of the radiating antenna is connected with the microwave source transmitting port, and the other end of the radiating antenna is connected with the radiating antenna;
steering engine: the radiating antenna is arranged at the position of the radiating antenna, so that the orientation of the antenna is adjustable, and the thermal area arranged in the blade icing area is uniformly radiated;
referring to fig. 2, the wind turbine blade has a hollow cavity structure, the blade comprises a blade front edge and a blade rear edge, a microwave source is arranged on the inner surface of the blade root, and the radiation antennas are connected through a high-power cable and are distributed on the inner surface of the blade front edge. The front edge of the blade is usually an ice-prone part, so that the direction of the radiation antenna can be adjusted through the steering engine to enable the radiation antenna to face the hot areas defined at the front edge of the blade respectively, and the front edge of the blade is heated in a uniformly dispersed manner through a back and forth scanning mode.
Referring to fig. 3, three microwave sources are uniformly installed at the blade root positions of the wind turbine blades at intervals of 120 °.
The apparatus further comprises:
and the microwave control module is used for: the microwave generator is arranged in the wind turbine generator control cabinet and is electrically connected with the microwave generator, and is used for controlling the microwave source to emit microwaves to the front edges of blades of the wind turbine generator;
steering engine control module: the system is arranged in a control cabinet of the wind turbine generator, is electrically connected with a steering engine, and is used for defining a hot zone according to icing conditions and controlling the steering engine to adjust the orientation of the radiation antenna;
wave-absorbing paint: the coating is uniformly coated on the outer layer paint of the blade so as to absorb microwaves from a radiation antenna, and the temperature is raised to melt the ice layer contacted with the outer surface of the blade.
The method for preventing and removing ice from the wind power blade comprises the following steps:
step 1, a monitoring system monitors the icing condition of the blades of the wind turbine generator in real time, and sends deicing signals when the icing condition reaches set conditions; the setting conditions are trigger conditions preset by technicians according to the field conditions of the wind turbine generator.
Step 2, a steering engine control module delimits a hot zone according to the icing condition of the blade monitored by the monitoring system, and respectively controls the rotation of steering engines on the three radiation antennas to enable the radiation antennas to face the hot zone;
and 3, after receiving the deicing signal, the microwave control module controls the microwave source to work, and the radiation antenna transmits microwaves to the inner cavity of the blade in a back and forth scanning mode.
And 4, absorbing microwaves from the radiation antenna by the wave-absorbing coating, heating the hot zone, and melting the ice layer at the interface, so that the ice coating falls off under the action of gravity and centrifugal force.
Referring to fig. 1, when the wind turbine generator blade generates icing, a monitoring system equipped with the blade sends icing warning to a wind power plant operation and maintenance center, and at this time, a technician can send deicing signals to a microwave control module and a steering engine control module according to needs. When the icing condition reaches the set triggering condition, the monitoring system automatically sends deicing signals to the microwave control module and the steering engine control module, and the microwave control module controls the microwave source at the root of the blade to be started; the steering engine control module delimits a hot zone at the front edge of the blade according to the icing condition of the blade, and adjusts the radiation antenna to face the hot zone through rotation of the steering engine. Then, microwave heating is carried out on a hot zone defined by the front edge of the blade in a back-and-forth scanning mode, after an ice layer contacted with the surface of the blade is melted, the adhesion force of the ice layer on the blade is reduced, then the ice layer falls off from the blade under the action of gravity and centrifugal force, and a monitoring system monitors the deicing condition of the surface of the blade in real time, so that the deicing process of the blade is completed.
Claims (2)
1. A device for preventing and removing ice from a wind power blade by microwaves, comprising: a microwave source, a microwave control module, and a radiation antenna; high-power cables, steering engine control modules and wave-absorbing paint;
three high-power microwave sources are uniformly arranged at the blade root positions of the blades of the wind turbine generator set in a 120-degree interval mode; the microwave control module is arranged in the control cabinet of the wind turbine generator and is electrically connected with the microwave source and used for controlling the microwave source to emit microwaves to the front edges of blades of the wind turbine generator; three radiation antennas, which radiate electromagnetic waves emitted by a microwave source to a specific direction of the inner cavity of the blade; one radiation antenna is arranged at the blade root part of the inner cavity of the blade of the wind turbine generator, and the other two radiation antennas are arranged at the front edge side of the middle area of the inner cavity of the blade, wherein the distance between the radiation antennas and the blade root is 40% of the length of the blade; in addition, an equal weight fitting is installed on the opposite side of the antenna to keep the overall load balance of the blade; through the arrangement mode, the blade heating zone is divided into a zone close to the blade root, a zone from the blade root to 40% close to the blade root and a blade tip zone, so that the hot zone planning of the microwave heating zone is realized;
the high-power cable is used for leading out a radiation antenna, one end of the high-power cable is connected with a microwave source emission port, and the other end of the high-power cable is connected with the radiation antenna;
the steering engine is arranged at the radiation antenna, so that the orientation of the antenna is adjustable, and a hot zone arranged in the blade icing area is uniformly radiated;
the steering engine control module is arranged in the wind turbine generator control cabinet and is electrically connected with the steering engine, and is used for defining a hot zone according to icing conditions and controlling the steering engine to adjust the orientation of the radiation antenna;
the wave-absorbing paint is uniformly coated on the outer paint of the blade so as to absorb microwaves from the radiation antenna, and the temperature is raised to melt the ice layer contacted with the outer surface of the blade.
2. A method of a wind turbine blade microwave deicing apparatus as set forth in claim 1, comprising the steps of:
step 1, a monitoring system monitors the icing condition of the blades of the wind turbine generator in real time, and sends deicing signals when the icing condition reaches set conditions;
step 2, a steering engine control module delimits a hot zone according to the icing condition of the monitored blade, and respectively controls the rotation of steering engines on a plurality of radiation antennas to enable the radiation antennas to face the hot zone;
step 3, after receiving the deicing signal, the microwave control module controls the microwave source to work, and the radiation antenna emits microwaves to the inner cavity of the blade in a back and forth scanning mode;
and 4, absorbing microwaves from the radiation antenna by the wave-absorbing coating, heating the hot zone, and melting the ice layer at the interface, so that the ice coating falls off under the action of gravity and centrifugal force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310729523.9A CN116877362A (en) | 2023-06-20 | 2023-06-20 | Device and method for preventing and removing ice of wind power blade through microwaves |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310729523.9A CN116877362A (en) | 2023-06-20 | 2023-06-20 | Device and method for preventing and removing ice of wind power blade through microwaves |
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| CN116877362A true CN116877362A (en) | 2023-10-13 |
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| CN202310729523.9A Pending CN116877362A (en) | 2023-06-20 | 2023-06-20 | Device and method for preventing and removing ice of wind power blade through microwaves |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118442269A (en) * | 2024-07-08 | 2024-08-06 | 大唐景泰风电有限责任公司 | Wind driven generator blade deicing device and blade temperature control system |
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2023
- 2023-06-20 CN CN202310729523.9A patent/CN116877362A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118442269A (en) * | 2024-07-08 | 2024-08-06 | 大唐景泰风电有限责任公司 | Wind driven generator blade deicing device and blade temperature control system |
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