They must be the same length. The three blades are arranged at 120° to each other and turn into a circle. The reason is very simple. The same length is to balance each other. The wind receiving area is the same. The force on the hub is naturally balanced. As for why it is round Yes, it’s easy to figure it out, haha, because it’s spinning! ! !
Problems with wind turbines? I see that the wind turbine is very tall, with only three fan blades at the top, and the leaves are very thin. How can it generate electricity due to the wind?
Wind power generators
The wind receiving impeller of the wind turbine is thin and long because the blades are the most basic and important components of
wind turbines
The most critical components, their good design, reliable quality and superior performance are the decisive factors to ensure the normal and stable operation of the unit. Harsh environment and long-term non-stop operation require the blades to be light in specific gravity and have the best fatigue strength and mechanical properties, and can withstand extremely harsh conditions such as storms. and random load tests; the elasticity of the blades, the inertia during rotation and its
vibration frequency
characteristic curve
are all normal and are transmitted to the entire power generation system. Good load stability; good resistance to corrosion, ultraviolet radiation and lightning strikes; low power generation cost and lowest maintenance cost.
The other is to reduce the weight. In order to meet the above requirements and improve the economy of the unit, increasing the size of the blades can improve the economy of wind power generation and reduce costs.
There should be a great relationship between the amount of wind energy received and the size of the wind-receiving area of the blades of the device. This statement is not accurate. The reason why wind energy is converted into kinetic energy is through the interaction between wind and blades.
In order to expand the wind receiving range and reduce resistance,.
The location is high, so the wind is relatively strong and the wind speed is uniform.
Because the blades are very long, the torque at the shaft (the directional force that causes the shaft to rotate) is very large. Many factors are considered in the design of the blades. The shape is similar to that of an airplane propeller, and fluids are all taken into consideration. It was designed through mechanical research. To be honest, I haven’t done much research on the many advantages of this shape in fluids.
If the blade is too fat, the blade itself will be easily damaged, and the torque will not increase but the front thrust will increase. That is, the force to rotate the fan will not increase, but the force to tip the tower will increase. , which does more harm than good.