CN116906285A - Electric heating ice preventing and removing system for lightning protection fan blade - Google Patents
Electric heating ice preventing and removing system for lightning protection fan blade Download PDFInfo
- Publication number
- CN116906285A CN116906285A CN202310991395.5A CN202310991395A CN116906285A CN 116906285 A CN116906285 A CN 116906285A CN 202310991395 A CN202310991395 A CN 202310991395A CN 116906285 A CN116906285 A CN 116906285A
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- Prior art keywords
- blade
- electric heating
- lightning protection
- coating
- subsystem
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- 238000005485 electric heating Methods 0.000 title claims abstract description 73
- 239000011248 coating agent Substances 0.000 claims abstract description 63
- 238000000576 coating method Methods 0.000 claims abstract description 63
- 239000011664 nicotinic acid Substances 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 6
- 229910052709 silver Inorganic materials 0.000 claims description 6
- 239000004332 silver Substances 0.000 claims description 6
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 239000002041 carbon nanotube Substances 0.000 claims description 3
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 3
- NZOBMQKUUTZNND-UHFFFAOYSA-N copper scandium Chemical compound [Sc].[Cu] NZOBMQKUUTZNND-UHFFFAOYSA-N 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 229910044991 metal oxide Inorganic materials 0.000 claims 1
- 150000004706 metal oxides Chemical class 0.000 claims 1
- 239000004065 semiconductor Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 230000002265 prevention Effects 0.000 abstract description 6
- 239000005871 repellent Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010248 power generation 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
- F03D80/30—Lightning protection
-
- 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
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
-
- 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
-
- 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 provides an electric heating deicing prevention and removal system for a lightning protection fan blade, which relates to the technical field of blade deicing of wind driven generators and comprises a blade electric heating deicing prevention subsystem, a lightning protection module, a blade state sensing subsystem and a control power distribution subsystem, wherein the blade electric heating deicing prevention subsystem comprises a bionic deicing coating, an electric heating coating, an insulating primer and a power supply electrode; the lightning protection module is embedded in the blade and grounded; the blade state sensing subsystem is used for detecting icing states and temperatures of the surfaces of the blades; the control distribution electronic system is used for receiving the blade state signals of the blade state sensing subsystem and controlling the blade electrothermal ice preventing subsystem to work. The scheme provided by the invention has the advantages of lightning protection effect, ice prevention and good deicing effect.
Description
Technical Field
The invention relates to the technical field of deicing of blades of wind driven generators, in particular to an electric heating deicing prevention and removal system for a lightning protection fan blade.
Background
Ice control technology has attracted attention in many fields. Because the wind turbine generator is exposed to the natural environment for a long time, the wind turbine generator is greatly affected by the environment and the climate, wherein the icing of the blades is the most important factor affecting the safety and the power generation of the wind turbine generator. The blade icing can lead to the change of blade airfoil, influences the unit output, can lead to the unit to shut down and produce great power curve deviation when serious, causes the generated energy loss to can influence the balance of impeller, lead to the uneven load of blade and drive part, influence the life and the operation safety of unit. In addition, the detachment of ice coating due to the rotation of the blower may jeopardize the safety of surrounding population and property. Therefore, it is very urgent and necessary to prevent ice from being removed for the wind power generator.
Existing anti-icing systems for fan blades are mainly divided into two categories: an active anti-icing mode that relies on energy input or a passive anti-icing mode that relies solely on the coating. The passive system has poor durability and cannot effectively realize anti-icing in dynamic environments such as rain and snow. The active mode can be divided into two main types: gas-thermal anti-icing and electric-thermal anti-icing. Compared with gas heat anti-icing, the electric heating anti-icing is more efficient and stable, but an electric heating system does not have a lightning protection function, and has huge energy consumption and limited performance.
Based on this, a new solution is urgently needed to solve the above-mentioned problems.
Disclosure of Invention
The invention aims to provide an electric heating anti-icing system for a lightning-proof fan blade, which solves the problems in the prior art, and has the advantages of lightning-proof effect and good anti-icing and deicing effects.
In order to achieve the above object, the present invention provides the following solutions:
the invention provides an electric heating ice control system for a lightning protection fan blade, which comprises the following components:
the blade electrothermal ice preventing subsystem comprises a bionic ice dispersing coating, an electric heating coating, an insulating primer and a power supply electrode, wherein the insulating primer is coated on the surface of the blade, the electric heating coating at least covers part of the surface of the insulating primer, the bionic ice dispersing coating is coated on the electric heating coating and part of the surface of the insulating primer, and the power supply electrode is arranged below the electric heating coating and is used for electrifying the electric heating coating;
the lightning protection module is embedded in the blade and grounded;
the blade state sensing subsystem is used for detecting icing states and temperatures of the surfaces of the blades;
the control distribution electronic system is used for receiving the blade state signals of the blade state sensing subsystem and controlling the blade electrothermal ice preventing subsystem to work.
Preferably, the electrically heated coating has the following two distribution forms:
form one: the electric heating coating is integrally distributed on the front edge of the blade and extends towards the rear edge;
form two: the electric heating coating is distributed on the front edge of the blade in a multi-section mode along the spanwise direction of the blade and extends towards the rear edge.
Preferably, the blade state sensing subsystem comprises a plurality of temperature sensors, wherein the temperature sensors are built in the electric heating coating, and the blade state sensing subsystem monitors icing conditions of the surface of the blade through visual identification, infrared monitoring, ultrasonic monitoring or laser means.
Preferably, the area occupied by the electrically heated coating extends from 1/3 to 3/4 of the spanwise direction of the blade.
Preferably, the lightning protection module is a copper net, an iron wire net, an aluminum net, a silver net, carbon fiber cloth, carbon cloth or scandium copper film;
the insulating primer is polyurethane primer or epoxy resin primer;
the electric heating coating is a graphene electric heating layer, a carbon nano tube electric heating layer, a graphite electric heating layer, a metal electric heating layer or a PTC electric heating layer;
the power supply electrode is a copper electrode, an aluminum electrode, a gold electrode or a silver electrode;
the temperature sensor is PT-1000 or PT-100.
Preferably, the power supply line and the signal line required by the components on the blade are routed in the hollow cavity in the blade and led out, and are connected with the control distribution electronic system through the conductive slip ring.
Preferably, when the second type of sectional heating is adopted, each section of the electric heating coating independently corresponds to one group of power supply electrodes, and each group of power supply electrodes controls on-off between the power supply electrodes and the control power distribution subsystem through the MOS tube.
Preferably, the blade state sensing subsystem and the control distribution electronic system are both provided with a lightning protection sub-module, and the electrical signals transmitted by the blade state sensing subsystem and the control distribution electronic system pass through the lightning protection sub-module.
Compared with the prior art, the invention has the following technical effects:
the electric heating anti-icing system for the lightning protection fan blade comprises the lightning protection module, when the blade is struck by lightning, the lightning protection module can conduct the lightning to the ground surface to avoid damage to the blade, active deicing is realized by arranging the electric heating coating, passive anti-icing is realized by the bionic ice-dispersing coating, and good anti-icing effect is realized by superposition of the lightning protection module and the electric heating coating.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a structure of an electric heating ice control system for a lightning protection fan blade provided by the invention when the electric heating ice control system is arranged on a wind generating set;
FIG. 2 is a schematic layout of a bionic icephobic coating, an electrical heating coating, and a lightning protection module;
FIG. 3 is a schematic cross-sectional view of a passive iced area;
FIG. 4 is a schematic cross-sectional view of an active iced area;
FIG. 5 is a schematic illustration of an electrically heated coating segment arrangement;
FIG. 6 is a control flow chart of the lightning protection fan blade electric heating ice control system provided by the invention;
in the figure: 1-a blade electrothermal ice protection subsystem; 11-a bionic icephobic coating; 12-electrically heating the coating; 14-insulating primer; 15-a power supply electrode; 2-controlling an electronic distribution system; 3-a blade state awareness subsystem; 4-leaf blades; 5-signal lines; 6-a power supply line; 7-lightning protection module.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide an electric heating anti-icing system for a lightning-proof fan blade, which solves the problems in the prior art, and has the advantages of lightning-proof effect and good anti-icing and deicing effects.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
The invention provides an electric heating deicing system for a lightning protection fan blade, which is shown in fig. 1-6 and comprises: the blade electrothermal ice prevention subsystem 1, the lightning protection module 7, the blade state sensing subsystem 3 and the control distribution subsystem 2;
the blade electrothermal ice preventing subsystem 1 comprises a bionic ice dispersing coating 11, an electric heating coating 12, an insulating primer 14 and a power supply electrode 15, wherein the insulating primer 14 is coated on the surface of the blade 4, the electric heating coating 12 at least covers part of the surface of the insulating primer 14, the bionic ice dispersing coating 11 is coated on the surfaces of the electric heating coating 12 and part of the insulating primer 14, and the power supply electrode 15 is arranged below the electric heating coating 12 and is used for electrifying the electric heating coating 12; specifically, the insulating primer 14 is a polyurethane primer or an epoxy primer; the electric heating coating 12 is a graphene electric heating layer, a carbon nanotube electric heating layer, a graphite electric heating layer, a metal electric heating layer or a PTC electric heating layer; the power supply electrode 15 is a copper electrode, an aluminum electrode, a gold electrode and a silver electrode;
the lightning protection module 7 is embedded in the blade 4 and grounded; specifically, the lightning protection module 7 may be a copper mesh, an iron wire mesh, an aluminum mesh, a silver mesh, carbon fiber cloth, carbon cloth, scandium copper film, or the like;
the blade state sensing subsystem 3 is used for detecting icing states and temperatures of the surfaces of the blades 4; specifically, the blade state sensing subsystem 3 includes a plurality of temperature sensors, the temperature sensors are built in the electric heating coating 12, and the blade state sensing subsystem 3 monitors icing conditions on the surface of the blade 4 through visual recognition, infrared monitoring, ultrasonic monitoring or laser means, more specifically, the temperature sensors are PT-1000 or PT-100, and the like.
The control subsystem 2 is configured to receive the blade status signal from the blade status sensing subsystem 3 and control the blade electrothermal ice protection subsystem 1 to operate in a control mode including, but not limited to, the following: firstly, when the surface temperature of the blade 4 is detected to be lower than a set threshold value, an electrothermal system is started to prevent the surface of the blade 4 from icing; second, when the ice coating thickness of the surface of the blade 4 is detected to be larger than the set threshold value, the electrothermal system is started to rapidly remove ice.
The electric heating anti-icing system for the lightning protection fan blade comprises the lightning protection module 7, when the electric heating coating 12 on the blade 4 is struck by lightning, the lightning protection module 7 can conduct the lightning to the ground surface to avoid damage to the blade 4, and the electric heating coating 12 is arranged to realize active deicing, the bionic ice-repellent coating 11 is used for realizing passive anti-icing, and when the active deicing is carried out, the bionic ice-repellent coating 11 can reduce the adhesion of ice cubes, rain and snow on the surface, the rain and snow are more easily separated from the surface, and the two are overlapped to realize a better anti-icing effect.
In some embodiments, the electrically heated coating 12 has the following two profiles:
form one: the electric heating coating 12 is integrally distributed on the front edge of the blade 4 and extends towards the rear edge; the electric heating coating 12 is heated as a whole, and has no need of excessive control means, and simple circuit and program.
Form two: the electric heating coating 12 is distributed on the front edge of the blade 4 in a multi-section mode along the spanwise direction of the blade 4 and extends towards the rear edge, when the two-section type sectional heating is adopted, each section of electric heating coating 12 independently corresponds to one group of power supply electrodes 15, each group of power supply electrodes 15 controls the on-off of the power distribution subsystem 2 through the MOS tube, sectional heating is realized according to the detection result of the blade state, so that heat loss is reduced, for example, when ice coating is only carried out on a certain section of area on the blade 4, only the electric heating coating 12 under the area needs to be controlled to be heated for deicing.
In some embodiments, in order to save cost, the area occupied by the electric heating coating 12 is set to extend from 1/3 to 3/4 of the spanwise direction of the blade 4, because the possibility of icing at the spanwise end of the blade 4 is less, and only the bionic icephobic coating 11 is required to be provided for iceproofing.
In some embodiments, the blade state sensing subsystem 3 and the control distribution subsystem 2 are not disposed on the blade 4, and cannot rotate along with the blade 4, so, in order to meet the requirements of power supply and communication, the power supply line 6 and the signal line 5 required by the components on the blade 4 are routed and led out from the hollow cavity inside the blade 4, and are connected with the control distribution subsystem 2 through the conductive slip ring.
In some embodiments, the blade state sensing subsystem 3 and the control distribution subsystem 2 are both equipped with lightning protection sub-modules, and the electrical signals transmitted by the blade state sensing subsystem 3 and the control distribution subsystem 2 pass through the lightning protection sub-modules, and the lightning protection sub-modules are equipped in the power system, which belongs to the mature prior art and is not described herein.
In some embodiments, the temperature sensor in this embodiment transmits the temperature signal to the control subsystem 2 through a transmission means such as 5 g/wifi/bluetooth/wire.
In some embodiments, the power in this embodiment is derived from a wind driven generator, and the control electronic system 2 includes a lightning protection sub-module, a power distribution module, a control module, a local terminal, a transformation module, a remote terminal, and the like, and converts high voltage generated by the wind driven generator into working voltage through the transformation module to supply power to the control module and the local terminal. The control module of the control distribution electronic system 2 of the embodiment can receive control signals of the local terminal and the remote terminal, and regulate and control the distribution module, including but not limited to current control, voltage control, power control, and on-off control.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (8)
1. An electric heating deicing system for a lightning protection fan blade is characterized in that: comprising the following steps:
the blade electrothermal ice preventing subsystem comprises a bionic ice dispersing coating, an electric heating coating, an insulating primer and a power supply electrode, wherein the insulating primer is coated on the surface of the blade, the electric heating coating at least covers part of the surface of the insulating primer, the bionic ice dispersing coating is coated on the electric heating coating and part of the surface of the insulating primer, and the power supply electrode is arranged below the electric heating coating and is used for electrifying the electric heating coating;
the lightning protection module is embedded in the blade and grounded;
the blade state sensing subsystem is used for detecting icing states and temperatures of the surfaces of the blades;
the control distribution electronic system is used for receiving the blade state signals of the blade state sensing subsystem and controlling the blade electrothermal ice preventing subsystem to work.
2. The lightning protection fan blade electrical heating deicing system according to claim 1, wherein: the electric heating coating has the following two distribution forms:
form one: the electric heating coating is integrally distributed on the front edge of the blade and extends towards the rear edge;
form two: the electric heating coating is distributed on the front edge of the blade in a multi-section mode along the spanwise direction of the blade and extends towards the rear edge.
3. The lightning protection fan blade electrical heating deicing system according to claim 2, wherein: the blade state sensing subsystem comprises a plurality of temperature sensors which are arranged in the electric heating coating, and the blade state sensing subsystem monitors icing conditions of the surface of the blade through visual identification, infrared monitoring, ultrasonic monitoring or laser means.
4. The lightning protection fan blade electrical heating deicing system according to claim 1, wherein: the area occupied by the electric heating coating extends from 1/3 to 3/4 of the spanwise direction of the blade.
5. The lightning protection fan blade electrical heating deicing system according to claim 3, wherein: the lightning protection module is a copper net, an iron wire net, an aluminum net, a silver net, carbon fiber cloth, carbon cloth or scandium copper film;
the insulating primer is polyurethane primer or epoxy resin primer;
the electric heating coating is a graphene electric heating layer, a carbon nano tube electric heating layer, a graphite electric heating layer, a metal electric heating layer or a PTC electric heating layer;
the power supply electrode is a copper electrode, an aluminum electrode, a gold electrode or a silver electrode;
the temperature sensor is PT-1000 or PT-100.
6. The lightning protection fan blade electrical heating deicing system according to claim 1, wherein: and a power supply line and a signal line required by the components on the blade are routed in the hollow cavity in the blade and led out, and are connected with the control distribution electronic system through the conductive slip ring.
7. The lightning protection fan blade electrical heating deicing system according to claim 2, wherein: when the second type of sectional heating is adopted, each section of electric heating coating independently corresponds to one group of power supply electrodes, and each group of power supply electrodes are controlled to be on-off with the control power distribution subsystem through MOS (metal oxide semiconductor) tubes.
8. The lightning protection fan blade electrical heating deicing system according to claim 1, wherein: the blade state sensing subsystem and the control distribution electronic system are both provided with a lightning protection sub-module, and electric signals transmitted by the blade state sensing subsystem and the control distribution electronic system pass through the lightning protection sub-module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310991395.5A CN116906285A (en) | 2023-08-08 | 2023-08-08 | Electric heating ice preventing and removing system for lightning protection fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310991395.5A CN116906285A (en) | 2023-08-08 | 2023-08-08 | Electric heating ice preventing and removing system for lightning protection fan blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116906285A true CN116906285A (en) | 2023-10-20 |
Family
ID=88353165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310991395.5A Pending CN116906285A (en) | 2023-08-08 | 2023-08-08 | Electric heating ice preventing and removing system for lightning protection fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116906285A (en) |
-
2023
- 2023-08-08 CN CN202310991395.5A patent/CN116906285A/en active Pending
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