Wind Turbine Blade 风力发电叶片

Large blades (above 42 meters) use carbon fiber or carbon fiber / glass fiber mixture to reinforce. The resin matrix is mainly epoxy resin.
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3. Manufacturing process:
Hand lay-up: Hand lay-up is an open mold process and will produce volatile toxic gases (such as styrene), bringing harm to operators and the environment. In addition, because of poor productivity and poor product quality, hand lay-up is generally only used to produce small quantities of short blades. Vacuum watering molding: For the blades with more than 40 meters generally use vacuum watering molding. This process has high efficiency, low cost and good quality.It has been widely used. Integral molding The advantages of integral molding include: the manufacturing process requires only a set of moulds, so this method saves labor and space; the blade structure is complete because there is no glue-bonding part.
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2. Blade composite material:
Small wind turbine blades (below 22 meters) use glass fiber to reinforce. The resin matrix is mainly unsaturated polyester resin, we can also choose vinyl resin and epoxy resin.
of the solar energy, since they are the
temperature differences and the pressureinduced in the atmosphere by absorbing solar radiation, which set in motion the winds. The rotor mission in a wind turbine is transforming this kinetic energy of wind to mechanic energy.
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2. Blade composite material:
Carbon fiber composites: Carbon fiber composite blades have twice the stiffness of fiberglass composite blades. Carbon fiber can not only reduce the blade quality, but also has more excellent performance. But carbon fiber is too expensive, so its wide application is limited. The compromise solution: Use a mixture of glass fiber and carbon fiber
Steel beam fiberglass skin blade
Glass fiber reinforced plastic(GFRP) composite blade
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2. Blade composite material:
E fiberglass composites: E-glass fibers are a family of calcium aluminosilicate glasses with low alkali metal oxide content and high resistivity. This composite material has great strength, good process matching, low price, but it has high density and is not suitable for large-scale blades. S fiberglass composites: S-glass is a magnesium alumino-silicate glass with a fiber strength twenty-five percent higher than E-glass fibers, but more expensive than E-glass fibers. S-glass fiber composites still can not meet the larger blade production.
Wind Turbine Blade
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CONTENT
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Wind Power
Wind Turbine Blade
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1 Wind Power
Wind is a clean, abundant, and renewable energy resource that can be exploited to produce electricity. The wind energy is an indirect form
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1. Blade material development and evolution
Aluminum alloy chord extrusion blade Carbon fiber composite blade
Wooden blade cloth skin blade
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4. Green blade:
Thermoplastic composite blades
recyclable curing cycle is short higher strength and stiffness
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Unstable wind speed
Interfere with birds Location restrictions Loud noise Low conversion efficiency
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Wind turbine is a power plant made up of blades, generator, transmission system, energy storage equipment, tower and electrical system and so on.
1 Wind Power
Advantage:
lower cost Non-three-dimensional facilities→protect land and ecology Renewable energy, environmentally friendly, clean Disadvantage: