CN103437952A - Double-turbine vertical-axis wind driven generator - Google Patents

Abstract

The invention belongs to the field of renewable energy, and relates to a device for generating electricity using a resistance-type vertical-axis double-turbine wind power generator. The main reason for the low utilization rate of wind energy of the resistance type wind turbine is that when the incoming flow hits the wind rotor, the effective thrust is received on the windward side, while the resistance is received on the other side. Their combined force is to push the wind rotor to rotate. The effectiveness of doing work. The present invention uses a fairing to cover the resistance side of the turbine impeller of the vertical axis wind power generator, and introduces the wind energy on the resistance side into the power side through the fairing. Flat resistance, improve the wind energy utilization efficiency of the vertical axis wind turbine. This kind of wind power generator is suitable for use in more than 50% of my country's low wind speed areas, and has good promotion and application value.

Description

Twin Turbine Vertical Axis Wind Turbine

technical field

The invention belongs to the field of renewable energy, and relates to a device for generating electricity using a resistance-type vertical-axis double-turbine wind power generator.

the

Background technique

At present, the international energy crisis and continuous environmental deterioration have made countries intensify their efforts to develop new clean energy. Wind power is the clean energy that has the most potential to partially replace traditional fossil energy. In our country, wind power generation is the most realistic choice for the sustainable development strategy of energy and electricity. Wind turbines are divided into two types: horizontal axis wind turbines and vertical axis wind turbines, and vertical axis wind turbines are further divided into power type and resistance type. The vertical axis wind turbine has a large starting torque, a simple device structure, and strong wind resistance. Although its efficiency is lower than that of the horizontal axis wind turbine, it has high practical value in many specific occasions. Such as polar regions, islands, cities and other occasions that require high reliability and certain portable and fast installation capabilities, it can provide power for equipment such as instruments and street lights that require little power, which has good promotion and application value, which will also make my country's energy structure is more reasonable, and resources are more fully utilized.

Contents of the invention

The main reason for the low utilization rate of wind energy of the resistance type wind turbine is that when the incoming flow hits the wind rotor, the effective thrust is received on the windward side, while the resistance is received on the other side. Their combined force is to push the wind rotor to rotate. The effectiveness of doing work. The purpose of the present invention is to use the fairing to cover the resistance side of the impeller of the vertical axis wind turbine, and introduce the wind energy on the resistance side into the power side through the fairing, thereby reducing the turbine resistance of the fan impeller and improving the wind energy utilization efficiency of the vertical axis wind generator.

Technical scheme of the present invention is:

The twin-turbine vertical-axis wind turbine adopts two counter-rotating vertical-axis impeller turbines, whose radial projection area is rectangular and axial projection area is circular. The rotating shaft of the impeller turbine is fixed on the mounting bracket, and the rotating shaft directly drives the generator at the bottom of the turbine to generate electricity. A fairing is placed in the middle of the front of the wind generator and fixed on the mounting bracket to block the resistance surfaces of the two impellers on the vertical axis wind generator. The shape of the fairing is conical, and this shape is used to guide all the wind energy in the projected area of the vertical-axis impeller turbine to the power side of the double-impeller turbine, so as to promote the normal operation of the vertical-axis impeller turbine. The twin-turbine vertical-axis wind turbine generates a lateral deflection moment under the action of the crosswind through the deflection rudder of the triangular plate structure at the tail, so that the twin-turbine vertical-axis wind turbine rotates around the main tower, so that the front is always aligned with the direction of wind energy flow. Ensure that the fan can better absorb wind energy. The impeller turbine of the twin-turbine vertical axis wind turbine drives the direct-drive permanent magnet generator at the bottom of the impeller turbine to generate electricity through the rotating shaft, and transmits the electric energy to the user through the power transmission cable and the electric three-phase rotary joint.

The power generation device utilizes the characteristics of low starting wind speed and high reliability of the vertical axis wind power generator, and reduces the resistance of the wind wheel turbine of the vertical axis wind power generator, thereby improving its wind energy utilization efficiency. At the same time, this kind of wind generator is suitable for use in more than 50% of my country's low wind speed areas, and has good promotion and application value.

Description of drawings

Accompanying drawing 1 is a schematic top view of the structure of the present invention;

Accompanying drawing 2 is a schematic side view of the structure of the present invention.

Among them: dome 1, wind tower rotation shaft 2 vertical shaft turbine 3, turbine installation frame 4, tail rudder support 5, triangular tail rudder 6, direct drive generator 7, main tower 8, turbine rotation shaft 9.

the

Detailed ways

A wind deflector 1 is installed at the front of the wind generator. The wind deflector 1 has a conical structure and guides the frontal wind energy into the power side of the vertical axis turbine 3 . Two vertical-axis turbines 3 are installed at the rear of the nozzle 1, and the vertical-axis turbine 3 is composed of four resistance-type vertical-axis flat blades and a turbine rotating shaft 9, and the wind energy introduced by the nozzle 1 blows the blades around The axis of rotation turns. The turbine rotation shafts 9 of the two vertical axis turbines 3 are installed on the wind tower rotation shaft 2 through the square frame structure turbine mounting frame 4, and can rotate 360° around the wind tower rotation shaft 2. The triangular tail rudder support 5 is fixed at the rear of the turbine installation frame 4, and the tail rudder support 5 is equipped with a triangular tail rudder 6. The tail rudder 6 generates a lateral moment under the action of wind energy, and the whole power generation device is driven to rotate through the tail rudder support 5. Align with the wind. The lower parts of the two vertical-axis turbines 3 are connected to the main shaft of the direct-drive generator 7 through the turbine rotating shaft, and the turbine blades are rotated by wind energy to drive the direct-drive generator to generate electricity. The whole power generating device is fixed on the main tower 8. The overall structure of the power generation device is simple, the reliability is high, and the efficiency is greatly improved compared with the resistance type vertical axis power generation device.

Claims (1)

1. Twin-turbine vertical-axis wind turbine, which is characterized in that a wind deflector is installed at the front of the wind turbine. The wind deflector has a conical structure, and the frontal wind energy is introduced into the power side of the vertical axis turbine, and the deflector is fixed. On the turbine mounting bracket, two vertical axis turbines are installed at the rear of the shroud. The wind energy introduced by the shroud blows the blades around the rotation axis, and the turbine rotation axis is installed through the turbine mounting bracket with a square frame structure. On the rotation axis of the wind tower, the triangular rudder support is fixed at the rear of the turbine installation frame, and the triangular rudder is installed behind the rudder support, and the lower parts of the two vertical axis turbines are connected to the direct drive generator through the turbine rotation shaft On the main shaft, the whole power generation device is fixed on the main tower.

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