CN110701005A - Electric heating deicing and lightning protection integrated composite film for wind power blade - Google Patents
Electric heating deicing and lightning protection integrated composite film for wind power blade Download PDFInfo
- Publication number
- CN110701005A CN110701005A CN201910944104.0A CN201910944104A CN110701005A CN 110701005 A CN110701005 A CN 110701005A CN 201910944104 A CN201910944104 A CN 201910944104A CN 110701005 A CN110701005 A CN 110701005A
- Authority
- CN
- China
- Prior art keywords
- layer
- lightning protection
- wind power
- montmorillonite
- blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention belongs to the technical field of wind power. The invention discloses an electric heating deicing and lightning protection integrated composite film for a wind power blade, which consists of a bonding glue layer, a first bonding enhancement layer, an electric heating film layer, an isolation layer, a lightning protection net layer, a second bonding enhancement layer and a protective paint layer; the first bonding enhancement layer, the second bonding enhancement layer and the isolation layer are all made of resin and fiber felts. The deicing and lightning protection integrated composite membrane structure can be prepared in a workshop in advance, the field operation working hours are saved, the field construction cost is reduced, and the structure is stable and high in reliability; the method can be used for manufacturing new blades and also can be used for the requirement of stock wind field blade deicing technology improvement, and has flexible operation and strong adaptability; the blade is arranged outside the front edge of the blade, so that the blade is simple to construct and convenient to replace, and the blade is more convenient to repair and operate after being damaged by lightning and the like and has lower repair cost.
Description
Technical Field
The invention relates to the technical field of wind power, in particular to an electric heating deicing and lightning protection integrated composite film for a wind power blade.
Background
Modern wind driven generators, especially large wind driven generators, fail due to ice accumulation at key parts such as wind wheel blades, anemorumbometers and the like when running in high-humidity and low-temperature climatic environments. If the deicing is not carried out, not only is a large amount of power generation loss caused by shutdown, but also the safety threat to ground personnel is caused by deicing and ice throwing. In addition, the blades are frozen to cause the dynamic unbalance of the wind wheel, the fatigue load of a transmission system of the fan is increased, and important parts such as a main shaft, a gearbox and the like can be damaged for a long time. Along with the continuous increase of blade length, tower section of thick bamboo height, the harm that blade icing was freezing to fan normal operating under the meteorological condition of freezing will further increase.
When a wind driven generator without the deicing system is subjected to icing meteorological conditions, only a shutdown measure can be taken, and accumulated ice on the blades is removed in a mode of manual deicing or sunlight irradiation temperature rise. Icing meteorological conditions are often accompanied by strong air convection, and the shutdown causes serious power generation loss, and according to the statistics of the document [1], the power generation loss caused by the shutdown accounts for 0.005-50%. In addition, a part of the blades adopt a passive anti-icing technology, namely, hydrophobic coating is sprayed on the surface of the front edge when the blades are prepared. However, the on-site actual measurement and literature show that the anti-icing hydrophobic coating can not prevent the generation of accumulated ice and only delay the icing time.
At present, the deicing technology of the wind wheel blade mainly comprises thermal deicing, and specifically comprises air-heating deicing and electric-heating deicing. The air-heating method is characterized in that an air blower is arranged at a blade root to generate air pressure, then the air pressure is fed into an electric heater to be heated, and hot air is blown into the blade through a pipeline to be circularly heated. However, the wind wheel blade belongs to a complex thin-wall composite material component, and the heat conduction capability is extremely low, so that the deicing efficiency by the air heating method is low. In addition, the weight and the volume of the air-heating deicing equipment are large, and the load of a wind wheel is increased. The principle of the electric heating method is that the conductive material generates heat after being electrified to deice. The electric heating film is prefabricated inside the blade and needs to be prepared and molded together with the blade in a blade production workshop. The method is characterized by high heating efficiency and has the defect that the stored wind field blades cannot be technically improved and can only be used for installing new blades during production of a die table. Furthermore, also limited to the field construction environment, the electrical heating film prefabricated inside the blade under the prior art conditions cannot be repaired once damaged during operation. In addition, the lightning stroke risk of the electric heating method is higher than that of the gas heating method, and the surge generated by the lightning stroke can damage the electric heating equipment.
Disclosure of Invention
The invention provides an electric heating deicing and lightning protection integrated composite film for wind power blades, which is high in deicing efficiency, good in repair capability, convenient to maintain and low in technical modification difficulty of a stock wind field, and aims to solve the problems of low deicing efficiency, poor repair capability, high technical modification difficulty of the stock wind field and the like in the existing wind power blade deicing technology.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
an electric heating deicing and lightning protection integrated composite film for wind power blades is composed of a bonding adhesive layer, a first bonding enhancement layer, an electric heating film layer, an isolation layer, a lightning protection net layer, a second bonding enhancement layer and a protective paint layer; the first bonding enhancement layer, the second bonding enhancement layer and the isolation layer are all made of resin and fiber felts; the thickness of tie coat is 40 ~ 60 microns, and the thickness of first tie coat, second tie coat and isolation layer is 40 ~ 60 microns, and the thickness of electricity generate heat rete is 450 ~ 550 microns, and the thickness of lightning protection stratum reticulare is 150 ~ 250 microns, and the thickness of protective paint layer is 150 ~ 250 microns.
Preferably, the first bonding reinforcing layer, the second bonding reinforcing layer and the isolation layer are prepared by soaking the fiber felt with resin, and the resin is uniformly distributed on the surface and inside of the fiber felt.
Preferably, the resin is at least one of an epoxy resin or an unsaturated resin.
Preferably, the fiber mat is at least one of a glass fiber mat or a carbon fiber mat.
Preferably, the electric heating film layer is made of graphene, carbon fibers, carbon nanotubes or pure copper.
Preferably, the lightning protection mesh layer is made of aluminum or copper metal or alloy thereof through stamping and stretching.
Preferably, the adhesive layer is composed of at least one of polyurethane glue and epoxy resin glue.
Preferably, the protective paint layer is prepared by coating polyurethane paint.
The invention relates to an integrated composite film which is prepared by structural components such as a lightning protection net layer, an electric heating film and the like in a resin and felt form by using hot-pressing equipment, and protective paint is sprayed on the surface after molding; when the composite film is installed, the composite film is fixed on the front edge of the blade through the adhesive body. The protective paint is sprayed on the outermost layer of the composite film, and has the characteristics of high tensile strength, high tensile rate, wear resistance and the like; the first bonding enhancement layer and the second bonding enhancement layer are prepared by soaking resin in fibrofelt, so that the bonding strength between the protective paint and the lightning protection net layer and between the bonding glue and the electric heating film layer can be enhanced, and the stress such as bending, stretching, shearing and the like generated by the factors such as blade shimmy, waving and the like can be borne; the lightning protection net layer is a metal lightning protection net structure which is made of aluminum or copper metal or alloy thereof through integral stamping and stretching forming, is connected with a lightning protection down-leading system of the fan and can play a lightning protection role; the electric heating film is made of graphene, carbon fibers, carbon nanotubes or pure copper, is made of the electric heating film and the like, is used as a core heating structure of the deicing system, is also connected with a fan power supply device, and can play a role in deicing and anti-icing through electric heating; the isolation layer is prepared by soaking resin in fibrofelt, can isolate the lightning protection net layer and the electric heating film layer, can enhance the direct bonding force of the lightning protection net layer and the electric heating film layer, and can bear the bending, stretching, shearing and other stresses caused by the blade shimmy, waving and other factors; the high-strength glue joint between the composite film and the blade is realized by the adhesive glue.
Preferably, the protective paint layer is prepared by coating montmorillonite modified polyurethane paint.
Preferably, the montmorillonite modified polyurethane coating is prepared by the following method, montmorillonite is dispersed in water and is enabled to fully absorb moisture, the montmorillonite which is fully absorbed with moisture is calcined, then the calcined montmorillonite is added into hydrochloric acid-copper chloride solution for ball milling treatment and cleaning and drying, then the treated montmorillonite is dispersed in the water, and dimethylformamide solution of polycaprolactam is added for ball milling treatment and cleaning and drying, the product is mixed with light calcium and then is ball milled to prepare modified montmorillonite, and then the modified montmorillonite is uniformly mixed with the polyurethane coating to prepare the montmorillonite modified polyurethane coating;
preferably, in the preparation process of the montmorillonite modified polyurethane coating, the weight ratio of montmorillonite, hydrochloric acid-copper chloride solution, water, polycaprolactam, dimethylformamide, light calcium carbonate to the polyurethane coating is 10: (20-30): (20-40): (3-6): (50-70): (10-15): (30-40).
Preferably, the concentration of hydrogen ions in the hydrochloric acid-copper chloride solution is 1.0-1.5 mol/L, and the concentration of copper ions is 0.8-1.3 mol/L.
Preferably, the polyurethane coating is prepared from polyurethane resin, polyisoprene, polyester polyol, diisocyanate and methyl acetate in a weight ratio of 55: (6-8): (3-6): (5-12): (40-60) and uniformly mixing.
Preferably, the montmorillonite modified polyurethane coating is prepared by dispersing montmorillonite in water and making the montmorillonite fully adsorb moisture, calcining the montmorillonite fully adsorbing moisture for 1-1.5 hours at 400-450 ℃, then adding the calcined montmorillonite into a hydrochloric acid-copper chloride solution, carrying out ball milling treatment for 1-2 hours at a rotating speed of 1200-1600 rpm, cleaning, drying at 100-120 ℃, dispersing the treated montmorillonite in water, adding a dimethylformamide solution of polycaprolactam into the water, carrying out ball milling treatment for 4-6 hours at the rotating speed of 600-1000 rpm, cleaning and drying at the temperature of 80-90 ℃, mixing the product with light calcium, carrying out ball milling treatment for 1-2 hours at the rotating speed of 2000-2500 rpm to obtain the modified montmorillonite, and then the modified montmorillonite is added into the polyurethane coating and mixed evenly to prepare the montmorillonite modified polyurethane coating.
The wind power fan is a power generation device which is usually in a severe environment, the wind power blade needs to be in a rotating state for a long time, and the surface of the wind power blade is continuously stretched in the rotating process, so that the wind power fan has high performance requirements on the protective paint on the surface of the wind power blade, and has good weather resistance and also needs to have good performances such as tensile resistance, bending resistance, shear stress resistance and the like. In order to better meet the requirements, the polyurethane coating modified by montmorillonite can be used as a protective paint.
In the montmorillonite modified polyurethane coating, montmorillonite and light calcium carbonate are used as mechanical property enhancing materials, so that the polyurethane coating has better strength and wear resistance. Montmorillonite and light calcium carbonate are used as inorganic materials, and the binding performance of montmorillonite and light calcium carbonate with polyurethane materials is not particularly good, so that montmorillonite and light calcium carbonate need to be subjected to surface modification to enable montmorillonite and light calcium carbonate to have good binding force. The modification method mainly comprises intercalation modification and grafting of organic matter long chains after the intercalation modification, wherein during the modification, interlayer activation treatment is carried out on montmorillonite firstly, so that an interlayer structure can be easily subjected to intercalation modification by the organic matter; in the activation process, water adsorption and high-temperature calcination treatment are firstly carried out, impurity removal treatment is carried out on montmorillonite to remove impurities on the surface and among layers of the montmorillonite, and then acid copper ions are adopted to activate the montmorillonite, so that interlayer ions of the montmorillonite are activated, and convenience is provided for the next intercalation treatment; intercalation adopts polycaprolactam for intercalation, firstly, polycaprolactam is prepared into solution in dimethyl formamide, and then intercalation modification is carried out by adopting high-energy ball milling; forming a free or independent or entangled heart state with one end positioned between montmorillonite layers and the other end in the montmorillonite after intercalation modification of polycaprolactam, and embedding the light calcium carbonate into an entangled structure formed by polycaprolactam on the surface of the montmorillonite by adopting high-energy ball milling treatment so that the light calcium carbonate is wrapped by long polycaprolactam chains to realize surface modification of the light calcium carbonate; finally, the modified montmorillonite-light calcium carbonate material with good binding force with the polyurethane main body is prepared, and because the surfaces of montmorillonite and light calcium carbonate particles are connected or wrapped by polycaprolactam long chains, the particles can be ensured not to be broken and separated under the action of bending and stretching force, so that the conditions that the protective paint is not cracked and the like after being used for a long time are realized, the structural units of the inner layer of the composite film can be protected for a long time, and the service life of the electric heating deicing and lightning protection integrated composite film for the wind power blade is ensured.
Preferably, the electric heating deicing and lightning protection integrated composite film for the wind power blade is bonded and fixed on the front edge of the wind power blade through the bonding layer.
The electric heating deicing and lightning protection integrated composite film for the wind power blade can be arranged at the front edge position of the wind power blade during the production of the wind power blade, and can also be used for carrying out technical transformation on the existing wind power blade.
Therefore, the invention has the following beneficial effects:
(1) the deicing and lightning protection integrated composite membrane structure can be prepared in a workshop in advance, the field operation working hours are saved, the field construction cost is reduced, and the structure is stable and high in reliability; the method can be used for manufacturing new blades and also can be used for the requirement of stock wind field blade deicing technology improvement, and has flexible operation and strong adaptability;
(2) the invention has small volume, light weight and low cost, adopts electric heating for deicing, has high deicing efficiency and low energy consumption, adopts high-density metal mesh for full coverage, and obviously improves the lightning protection effect;
(3) the blade is arranged outside the front edge of the blade, so that the blade is simple to construct and convenient to replace, and the blade is more convenient to repair after being damaged by lightning and the like and has lower repair cost.
Drawings
FIG. 1 is a schematic cross-sectional view of an electrically heated deicing and lightning protection integrated composite film for a wind turbine blade according to the present invention;
FIG. 2 is a simulation result data diagram of an electrical heating deicing and lightning protection integrated composite film for a wind power blade according to the present invention;
in the figure: wind-powered electricity generation blade 1, bonding glue film 2, first bonding enhancement layer 3, electric heating film layer 4, isolation layer 5, lightning protection stratum reticulare 6, second bonding enhancement layer 7, protective paint layer 8.
Detailed Description
The technical solution of the present invention will be further described with reference to the following embodiments.
It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all 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 the present invention, all the equipments and materials are commercially available or commonly used in the industry, and the methods in the following examples are conventional in the art unless otherwise specified.
Example 1
As shown in fig. 1, an electrical heating deicing and lightning protection integrated composite film for a wind power blade is composed of a bonding adhesive layer 2, a first bonding enhancement layer 3, an electrical heating film layer 4, an isolation layer 5, a lightning protection network layer 6, a second bonding enhancement layer 7 and a protective paint layer 8, and is bonded and fixed on the front edge of the wind power blade 1 through a bonding layer; the first bonding enhancement layer, the second bonding enhancement layer and the isolation layer are prepared by soaking glass fiber felt with epoxy resin, and the epoxy resin is uniformly distributed on the surface and inside the fiber felt; the electric heating film layer is made of carbon fibers, the lightning protection net layer is made of metal aluminum through stamping and stretching, the bonding glue layer is made of polyurethane glue, and the protective paint layer is made of polyurethane paint after coating; the thickness of tie coat is 50 microns, and the thickness of first tie coat enhancement layer, second tie coat and isolation layer is 50 microns, and the thickness of electricity rete that generates heat is 500 microns, and the thickness of lightning protection stratum reticulare is 200 microns, and the thickness of protective paint layer is 200 microns.
Example 2
As shown in fig. 1, an electrical heating deicing and lightning protection integrated composite film for a wind power blade is composed of a bonding adhesive layer 2, a first bonding enhancement layer 3, an electrical heating film layer 4, an isolation layer 5, a lightning protection network layer 6, a second bonding enhancement layer 7 and a protective paint layer 8, and is bonded and fixed on the front edge of the wind power blade 1 through a bonding layer; the first bonding enhancement layer, the second bonding enhancement layer and the isolation layer are prepared by soaking glass fiber felt with epoxy resin, and the epoxy resin is uniformly distributed on the surface and inside the fiber felt; the electric heating film layer is made of graphene, the lightning protection net layer is made of metal copper through stamping and stretching, and the bonding glue layer is made of polyurethane glue; the thickness of tie coat is 40 microns, and the thickness of first tie coat enhancement layer, second tie coat and isolation layer is 40 microns, and the thickness of electricity generate heat rete is 450 microns, and the thickness of lightning protection stratum reticulare is 150 microns, and the thickness of protective paint layer is 150 microns.
Wherein the protective paint layer is prepared by coating montmorillonite modified polyurethane paint, the montmorillonite modified polyurethane paint is prepared by dispersing montmorillonite in water and making it fully adsorb moisture, calcining montmorillonite which has fully adsorbed moisture at 400 ℃ for 1 hour, then adding the calcined montmorillonite into hydrochloric acid-copper chloride solution, carrying out ball milling treatment for 1 hour at the rotating speed of 1200rpm, cleaning and drying at 100 ℃, dispersing the treated montmorillonite in water, adding a dimethylformamide solution of polycaprolactam into the water, carrying out ball milling treatment for 4 hours at the rotating speed of 600rpm, cleaning, drying at the temperature of 80 ℃, mixing the product with light calcium, carrying out ball milling treatment for 1 hour at the rotating speed of 2000rpm to obtain the modified montmorillonite, then adding the modified montmorillonite into the polyurethane coating and uniformly mixing to prepare montmorillonite modified polyurethane coating;
the concentration of hydrogen ions in the hydrochloric acid-copper chloride solution is 1.0mol/L, and the concentration of copper ions is 0.8 mol/L;
the polyurethane coating is prepared from polyurethane resin, polyisoprene, polyester polyol, diisocyanate and methyl acetate according to a weight ratio of 55: 6: 3: 5: 40, uniformly mixing;
in the preparation process of the montmorillonite modified polyurethane coating, the weight ratio of montmorillonite, hydrochloric acid-copper chloride solution, water, polycaprolactam, dimethylformamide, light calcium and polyurethane coating is 10: 20: 20: 3: 50: 10: 30.
example 3
As shown in fig. 1, an electrical heating deicing and lightning protection integrated composite film for a wind power blade is composed of a bonding adhesive layer 2, a first bonding enhancement layer 3, an electrical heating film layer 4, an isolation layer 5, a lightning protection network layer 6, a second bonding enhancement layer 7 and a protective paint layer 8, and is bonded and fixed on the front edge of the wind power blade 1 through a bonding layer; the first bonding enhancement layer, the second bonding enhancement layer and the isolation layer are prepared by soaking unsaturated resin in a carbon fiber felt, and the unsaturated resin is uniformly distributed on the surface and inside the carbon fiber felt; the electric heating film layer is made of carbon nano tubes, the lightning protection net layer is made of copper alloy through stamping and stretching, and the bonding glue layer is made of epoxy resin glue; the thickness of tie coat is 50 microns, and the thickness of first tie coat enhancement layer, second tie coat and isolation layer is 50 microns, and the thickness of electricity rete that generates heat is 500 microns, and the thickness of lightning protection stratum reticulare is 200 microns, and the thickness of protective paint layer is 200 microns.
Wherein the protective paint layer is prepared by coating montmorillonite modified polyurethane paint, the montmorillonite modified polyurethane paint is prepared by dispersing montmorillonite in water and making it fully adsorb moisture, calcining montmorillonite which has fully adsorbed moisture at 430 ℃ for 1.2 hours, then adding the calcined montmorillonite into hydrochloric acid-copper chloride solution, carrying out ball milling treatment at the rotating speed of 1400rpm for 1.5 hours, cleaning and drying at 110 ℃, then dispersing the treated montmorillonite in water, adding a dimethylformamide solution of polycaprolactam into the water, carrying out ball milling treatment for 5 hours at the rotating speed of 800rpm, cleaning and drying at 85 ℃, mixing the product with light calcium, carrying out ball milling treatment for 1.5 hours at the rotating speed of 2300rpm to obtain the modified montmorillonite, then adding the modified montmorillonite into the polyurethane coating and uniformly mixing to prepare montmorillonite modified polyurethane coating;
the concentration of hydrogen ions in the hydrochloric acid-copper chloride solution is 1.2mol/L, and the concentration of copper ions is 1.0 mol/L;
the polyurethane coating is prepared from polyurethane resin, polyisoprene, polyester polyol, diisocyanate and methyl acetate according to a weight ratio of 55: 7: 4: 8: 50, uniformly mixing to obtain the product;
in the preparation process of the montmorillonite modified polyurethane coating, the weight ratio of montmorillonite, hydrochloric acid-copper chloride solution, water, polycaprolactam, dimethylformamide, light calcium and polyurethane coating is 10: 25: 30: 5: 60: 12: 35.
example 4
As shown in fig. 1, an electrical heating deicing and lightning protection integrated composite film for a wind power blade is composed of a bonding adhesive layer 2, a first bonding enhancement layer 3, an electrical heating film layer 4, an isolation layer 5, a lightning protection network layer 6, a second bonding enhancement layer 7 and a protective paint layer 8, and is bonded and fixed on the front edge of the wind power blade 1 through a bonding layer; the first bonding enhancement layer, the second bonding enhancement layer and the isolation layer are prepared by soaking unsaturated resin in a carbon fiber felt, and the unsaturated resin is uniformly distributed on the surface and inside the carbon fiber felt; the electric heating film layer is made of pure copper, the lightning protection net layer is made of aluminum alloy through stamping and stretching, and the bonding glue layer is made of epoxy resin glue; the thickness of tie coat is 60 microns, and the thickness of first tie coat enhancement layer, second tie coat and isolation layer is 60 microns, and the thickness of electricity generate heat rete is 550 microns, and the thickness of lightning protection stratum reticulare is 250 microns, and the thickness of protective paint layer is 250 microns.
Wherein the protective paint layer is prepared by coating montmorillonite modified polyurethane paint, the montmorillonite modified polyurethane paint is prepared by dispersing montmorillonite in water and making it fully adsorb moisture, calcining montmorillonite which has fully adsorbed moisture at 450 ℃ for 1.5 hours, then adding the calcined montmorillonite into hydrochloric acid-copper chloride solution, carrying out ball milling treatment for 2 hours at the rotating speed of 1600rpm, cleaning and drying at 120 ℃, then dispersing the treated montmorillonite in water, adding a dimethylformamide solution of polycaprolactam into the water, carrying out ball milling treatment for 6 hours at the rotating speed of 1000rpm, cleaning and drying at 90 ℃, mixing the product with light calcium, carrying out ball milling treatment for 2 hours at the rotating speed of 2500rpm to obtain the modified montmorillonite, then adding the modified montmorillonite into the polyurethane coating and uniformly mixing to prepare montmorillonite modified polyurethane coating;
the concentration of hydrogen ions in the hydrochloric acid-copper chloride solution is 1.5mol/L, and the concentration of copper ions is 1.3 mol/L;
the polyurethane coating is prepared from polyurethane resin, polyisoprene, polyester polyol, diisocyanate and methyl acetate according to a weight ratio of 55: 8: 6: 12: 60, uniformly mixing to obtain the product; c
In the preparation process of the montmorillonite modified polyurethane coating, the weight ratio of montmorillonite, hydrochloric acid-copper chloride solution, water, polycaprolactam, dimethylformamide, light calcium and polyurethane coating is 10: 30: 40: 6: 70: 15: 40.
performance simulation:
due to the fact that the thickness of the composite film is small, the composite film can be processed according to the problem of infinite flat heat conduction, namely the simulation calculation of the heat conduction model of the one-dimensional multilayer board containing the internal heat source is carried out. And establishing a simulation model according to the actual multilayer dissimilar materials, wherein the input parameters are external environment temperature, humidity, speed and electric heating power. The calculation model is as follows:
the parameters were calculated as follows: the environmental temperature is-5 to-20 ℃; the environmental humidity is 90%; the speed is 50 m/s; the heating power is 1000-3500W.
The intrinsic parameters of the solid material are as follows:
| material | Density (kg/m)3) | Coefficient of thermal conductivity (W/m.K) | Specific heat capacity (J/kg/K) |
| Polyurethane | 1300 | 0.024 | 1064 |
| Resin composition | 2000 | 0.2 | 550 |
| Copper net | 8920 | 400 | 390 |
| Carbon cloth | 1200 | 10 | 700 |
Performance simulation results:
the performance simulation result is shown in fig. 2, and it can be known from the simulation result in fig. 2 that when the power of the heating film is 3500W, the surface temperature of the wind power blade can be heated to above the freezing temperature by the composite film under the environment temperature of-5 to-20 ℃, so that the freezing influence is effectively prevented.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides an integrative complex film of electrical heating deicing lightning protection for wind-powered electricity generation blade which characterized in that:
the lightning protection adhesive consists of an adhesive layer, a first adhesive enhancement layer, an electric heating film layer, an isolation layer, a lightning protection net layer, a second adhesive enhancement layer and a protective paint layer;
the first bonding reinforcing layer, the second bonding reinforcing layer and the isolating layer are all made of resin and fiber felts;
the thickness of tie coat be 40 ~ 60 microns, the thickness of first tie coat, second tie coat and isolation layer is 40 ~ 60 microns, the thickness of electricity generate heat rete is 450 ~ 550 microns, the thickness of lightning protection stratum reticulare 150 ~ 250 microns, the thickness of protective paint layer is 150 ~ 250 microns.
2. The electrical heating deicing and lightning protection integrated composite film for the wind power blade as claimed in claim 1, wherein:
the first bonding enhancement layer, the second bonding enhancement layer and the isolation layer are prepared by soaking resin in a fiber felt, and the resin is uniformly distributed on the surface and inside the fiber felt.
3. An electric heating deicing and lightning protection integrated composite film for wind power blades according to claim 1 or 2, characterized in that:
the resin is at least one of epoxy resin or unsaturated resin.
4. An electric heating deicing and lightning protection integrated composite film for wind power blades according to claim 1 or 2, characterized in that:
the fiber felt is at least one of glass fiber felt or carbon fiber felt.
5. The electrical heating deicing and lightning protection integrated composite film for the wind power blade as claimed in claim 1, wherein:
the electric heating film layer is made of graphene, carbon fibers, carbon nanotubes or pure copper.
6. The electrical heating deicing and lightning protection integrated composite film for the wind power blade as claimed in claim 1, wherein:
the lightning protection net layer is made of aluminum or copper metal or alloy thereof through stamping and stretching.
7. The electrical heating deicing and lightning protection integrated composite film for the wind power blade as claimed in claim 1, wherein:
the adhesive layer is composed of at least one of polyurethane adhesive and epoxy resin adhesive.
8. The electrical heating deicing and lightning protection integrated composite film for the wind power blade as claimed in claim 1, wherein:
the protective paint layer is prepared by coating montmorillonite modified polyurethane paint.
9. The electrical heating deicing and lightning protection integrated composite film for the wind power blade as claimed in claim 1, wherein:
the montmorillonite modified polyurethane coating is prepared by the following method, montmorillonite is dispersed in water and is enabled to fully absorb moisture, the montmorillonite which is fully absorbed with moisture is calcined, then the calcined montmorillonite is added into hydrochloric acid-copper chloride solution for ball milling treatment and cleaning and drying, then the treated montmorillonite is dispersed in water, and dimethyl formamide solution of polycaprolactam is added for ball milling treatment and cleaning and drying, the product is mixed with light calcium and then is ball milled to prepare modified montmorillonite, and then the modified montmorillonite is uniformly mixed with the polyurethane coating to prepare the montmorillonite modified polyurethane coating; the polyurethane coating is prepared from polyurethane resin, polyisoprene, polyester polyol, diisocyanate and methyl acetate according to a weight ratio of 55: (6-8): (3-6): (5-12): (40-60) and uniformly mixing.
10. The electrical heating deicing and lightning protection integrated composite film for the wind power blade as claimed in claims 1-9, wherein:
the wind power blade is fixedly bonded on the front edge of the wind power blade through the bonding layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910944104.0A CN110701005A (en) | 2019-09-30 | 2019-09-30 | Electric heating deicing and lightning protection integrated composite film for wind power blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910944104.0A CN110701005A (en) | 2019-09-30 | 2019-09-30 | Electric heating deicing and lightning protection integrated composite film for wind power blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110701005A true CN110701005A (en) | 2020-01-17 |
Family
ID=69196616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910944104.0A Pending CN110701005A (en) | 2019-09-30 | 2019-09-30 | Electric heating deicing and lightning protection integrated composite film for wind power blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110701005A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203272028U (en) * | 2013-05-21 | 2013-11-06 | 中航惠腾风电设备股份有限公司 | Electric heating anti-icing and deicing wind turbine blade achieving anti-thunder protection |
| CN105062340A (en) * | 2015-07-20 | 2015-11-18 | 青岛科技大学 | Organic montmorillonite modified polyurethane acrylic electrophoretic resin and electrophoretic paint |
| CN107489596A (en) * | 2017-08-11 | 2017-12-19 | 新疆金风科技股份有限公司 | Anti-freeze blade production method and wind generator set blade |
| CN109322784A (en) * | 2018-12-11 | 2019-02-12 | 江苏金风科技有限公司 | A kind of edge member, blade and the impeller of the blade for wind power generating set |
| CN109707561A (en) * | 2017-10-26 | 2019-05-03 | 吴金珠 | Anti-icing blade preparation method and wind generating set blade |
| EP3530936A1 (en) * | 2018-02-27 | 2019-08-28 | Beijing Goldwind Science & Creation Windpower Equipment Co. Ltd. | Electric heating apparatus for deicing, method for manufacturing the same, blade and wind turbine including the same |
-
2019
- 2019-09-30 CN CN201910944104.0A patent/CN110701005A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203272028U (en) * | 2013-05-21 | 2013-11-06 | 中航惠腾风电设备股份有限公司 | Electric heating anti-icing and deicing wind turbine blade achieving anti-thunder protection |
| CN105062340A (en) * | 2015-07-20 | 2015-11-18 | 青岛科技大学 | Organic montmorillonite modified polyurethane acrylic electrophoretic resin and electrophoretic paint |
| CN107489596A (en) * | 2017-08-11 | 2017-12-19 | 新疆金风科技股份有限公司 | Anti-freeze blade production method and wind generator set blade |
| CN109707561A (en) * | 2017-10-26 | 2019-05-03 | 吴金珠 | Anti-icing blade preparation method and wind generating set blade |
| EP3530936A1 (en) * | 2018-02-27 | 2019-08-28 | Beijing Goldwind Science & Creation Windpower Equipment Co. Ltd. | Electric heating apparatus for deicing, method for manufacturing the same, blade and wind turbine including the same |
| CN109322784A (en) * | 2018-12-11 | 2019-02-12 | 江苏金风科技有限公司 | A kind of edge member, blade and the impeller of the blade for wind power generating set |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105626370B (en) | A kind of anti-ice wind electricity blade structure | |
| CN105673361A (en) | Ice-melting heating structure of wind driven generator blade and manufacturing method thereof | |
| CN102878026B (en) | Wind driven generator rotor blade with electrothermal deicing devices | |
| CN103161689A (en) | Anti-icing and deicing system for large wind power generation built-up blade | |
| CN102822517A (en) | Fixation of a heating mat to a blade of a wind turbine | |
| CN105003393B (en) | A kind of wind driven generator vane front edge protective layer with ice-removing and ice-preventing function | |
| CA2846810A1 (en) | The surface structure of windmill rotors for special circumstances | |
| EP3530938A1 (en) | Ice melting device for blade, blade and wind turbine | |
| CN106321372A (en) | Composite carbon fiber heating element for wind-driven generator blade ice preventing or ice melting | |
| CN112096577A (en) | Fan blade defroster | |
| CN107859603B (en) | A kind of anti-icing and deicing wind electricity blade and preparation method thereof | |
| CN105952590A (en) | Heatable front edge flange plate for wind power blade | |
| CN110701005A (en) | Electric heating deicing and lightning protection integrated composite film for wind power blade | |
| CN112780507B (en) | Deicing method applied to wind turbine blade | |
| CN205544136U (en) | A high -pressure defroster for power equipment | |
| CN202159511U (en) | Novel wind energy cable | |
| CN204591592U (en) | A kind of blade anti-icing and de-icing device for wind-driven generator | |
| CN204472802U (en) | One is novel adds heat composite floor | |
| CN206487597U (en) | Anti-icing, deicing system blade and wind power generating set | |
| CN203452982U (en) | Combined mechanism of icing detection and deicing operation for wind turbine blade | |
| CN206429354U (en) | A kind of blade lightning protection device of wind-driven generator | |
| CA3216759A1 (en) | Wind turbine blade having a de-icing system | |
| CN202849306U (en) | Novel anti-corrosion and anti-icing wind power blade | |
| EP3450751B1 (en) | A rotor blade for a wind turbine, the wind turbine comprising one or more rotor blades, and a method for de-icing and/or anti-icing a tip part of the rotor blade | |
| CN202883274U (en) | Wind generator rotor blade with electric heating ice melting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200117 |
|
| RJ01 | Rejection of invention patent application after publication |