风机结构-双馈.ppt

Rotor Main shaft Gearbox Yaw bearing Generator Radiator Yaw motor Controller Anemometer Wind Vane Mechanical brake Small shaft,END,机舱,RotorThe rotor is bolted onto the big main shaft. The large rotor has three blades, which catch the wind. The wind will turn the rotor if there is enough power in the wind.,返回,风轮,GearboxThe rotor turns with app. 22 revolutions per minute (RPM). But the generator has to turn 1500 revolutions per minute. The gearbox converts the 22 revolutions to 1500 revolutions.,返回,齿轮箱,返回,齿轮箱-外形,返回,齿轮箱-内部,GeneratorThe generator makes electricity when it turns. The current is sent down through the tower in large electricity cables.,返回,发电机,返回,发电机,Yaw motorThe yaw motor turns the nacelle so that the rotor faces the wind. The motor has a cam wheel which fits into the large yaw bearing cam wheel. The controller tells the yaw motor when to turn the nacelle.,返回,偏航电机,返回,偏航电机,AnemometerThe anemometer measures the wind speed. It sends information about the wind speed to the controller all the time.,返回,风速仪,Mechanical BrakeThe mechanical brake is used when the wind turbine has to be repaired or it has to be serviced. It ensures that the rotor will not start turning.,返回,机械刹车机构,Main ShaftThe rotor turns the large shaft. The shaft is connected to the gearbox. The rotor uses a large force to turn the shaft. Therefore the shaft has to be very thick.,返回,主轴,返回,主轴,Yaw bearingThe large cam wheel is mounted onto the tower. The cam wheel of the yaw motor engages the large cam wheel and turns the nacelle with the rotor into the wind.,返回,偏航轴承,返回,偏航轴承,RadiatorWhen the generator is running it gets very hot. But if it becomes too hot it will break down. This is why it has to be cooled down. In some wind turbines (such as this one) the generator is cooled by water. The radiator cools the water,返回,冷却器,ControllerThe wind turbine controller is a computer that controls the many parts of wind turbine. The controller yaws the nacelle against the wind and allows the wind turbine rotor to start when the anemometer tells it that there is enough wind.,返回,控制器,返回,控制器,Wind VaneThe wind makes the wind vane turn. The wind vane tells the controller where the wind comes from. The controller then tells the yaw motor to yaw that means turn the rotor up against the wind.,返回,风向标,返回,风向标,Small shaftThe small shaft leads the power from the gearbox to the generator. The small shaft runs very quickly, approx. 1500 revolutions per minute.,返回,高速轴,返回,高速轴,返回,TOWER,FOUNDATION,总图,Lattice towerA tower can be made out of steel profiles that are put together to form a lattice. A lattice tower is very strong and inexpensive to manufacture. That is because it does not take as much steel to make a lattice tower as it does to make a tubular one.,返回,格架式塔架,Tubular TowerThe best towers for large wind turbines are shaped like a tube that is slightly wider at the bottom than at the top. You say that the tower is conical. A tubular steel tower is very strong.,返回,管式塔架,基础,返回,