A Fan Model with Automatic Pitch Change

Abstract

In the fan model that can automatically change the pitch according to the present invention, an anemometer is fixedly installed on the support plate, a PLC controller and a light bulb are fixedly installed on the bottom of the support, the motor is electrically connected to the light bulb through a wire, and several holes are evenly distributed on the surface of the hub. The blade, the trailing edge of the blade is fixedly connected to the hub through a hinge, the inner side of the blade is fixedly equipped with a travel switch A and an electromagnet A, and the travel switch A is electrically connected to the electromagnet A, and a slider is fixedly installed on the surface of the hub and below the position of the blade. The slide rail is provided with a moving cam and a cam moving device that can slide along the slide rail. The cam moving device can drive the moving cam to walk. The top of the moving cam is in contact with the travel switch A and the electromagnet A. The anemometer, stepping motor, The limit switch A is controlled by the PLC controller; this device has a simple structure and is easy to operate. On the basis of cutting out the complexity and simplifying it, it can clearly and intuitively display the working principle of the fan pitch change, which has played a very good teaching and experimental effect.

Description

technical field [0001] The invention relates to the field of teaching models for displaying wind power generators, in particular to a fan model capable of automatic pitch change. Background technique [0002] A wind turbine is a power device that converts wind energy into mechanical work, and the mechanical work drives the rotor to rotate, and finally outputs alternating current. A wind turbine generally includes a wind wheel, a generator, a steering device (tail), a tower, and a speed limit safety mechanism and Composed of energy storage devices and other components, the working principle of wind turbines is relatively simple. The wind rotor rotates under the action of wind force, which converts the kinetic energy of the wind into the mechanical energy of the wind rotor shaft, and the generator rotates to generate electricity under the drive of the wind rotor shaft. It can be said that wind energy is also solar energy, so it can also be said that wind power generator is a t...

AI Technical Summary

Problems solved by technology

[0004] Due to the lack of intuitive teaching equipment for fan pitch change, it is difficult for people to understand its working principle and process in popular science education and teaching. To demonstrate and improve the teaching effect, people need a model instrument to intuitively demonstrate the fan pitch and closely combine with the teaching material knowledge to achieve a good teaching effect. The model must be able to reflect the main structure and process. Viewers can clearly and intuitively understand the working principle and main structure of fan pitch, which is the problem to be solved in fan model making

Images