CN202300831U

CN202300831U - Wind power generator with driving mode of two-groups of wind wheels

Info

Publication number: CN202300831U
Application number: CN 201120198802
Authority: CN
Inventors: 沈季康
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-14
Filing date: 2011-06-14
Publication date: 2012-07-04
Anticipated expiration: 2021-06-14

Abstract

The utility model relates to wind power generation, in particular to a wind power generator in which a rotor and a rotatable stator of the power generator are respectively driven by two groups of wind wheels. The wind power generator with a driving mode of two-groups of wind wheels is characterized by consisting of a wind wheel group A, a wind-wheel group B, a direct-driving type double-axis power generator, a tower frame, bearing seats and couplers, wherein the wind wheel group A is arranged at the upper part of the tower frame by using the bearing seat, and is connected with a rotor shaft of the direct-driving type double-axis power generator arranged at the middle part of the tower frame by the coupler; the wind-wheel group B is arranged below the direct-driving type double-axis power generator by the upper-lower groups of bearing seats; and wind-wheel shafts are connected with the rotatable stator of the direct-driving type double-axis power generator by the coupler. The angles of two groups of wind-wheel blades for capturing the wind energy are opposite; after the wind energy is captured, the respective wind-wheel shafts are driven to do reverse rotation, and the rotor and the rotatable stator of the power generator are respectively driven to do reverse rotation, so that the rotating speed of the rotor of the power generator relative to the stator is increased, and higher power generating efficiency is achieved.

Description

Two groups of wind wheel driving type wind driven generators

Technical field

The utility model relates to wind power plant, particularly a kind of wind-driven generator that is driven generator amature and turnable stator by two groups of wind wheels respectively.

Background technique

Current wind-driven generator is through after one group of wind wheel capturing wind energy, drives the rotor shaft rotation, and the rotary machine of rotor shaft can be delivered to the step-up gear speedup, drives generator for electricity generation by output shaft again.

At present a kind of direct-drive aerogenerator has been cancelled the big gear speedup case of heavy noise, also can normal power generation under the slow-speed of revolution, but because the rotating speed of wind wheel is low, so generating efficiency is also relatively low.

Summary of the invention

The purpose of the utility model provides the wind-driven generator that a kind of novel wind wheel drives, and is simple in structure, can solve the existing lower problem of wind turbine power generation efficient again.

A kind of two group wind wheel driving type wind driven generators of the utility model; Form by wind wheel, direct drive generator, pylon and connected element; It is characterized in that said wind wheel is two groups; Be divided into wind wheel group A and wind wheel group B, wind wheel group A and be installed in the top of pylon, be connected through the rotor shaft of coupling with the direct driving type dual spindle generator that is installed in the pylon middle part with bearing support;

Wind wheel group B with two groups of bearing supports up and down be installed in the direct driving type dual spindle generator below, rotor shaft is connected with the turnable stator of direct driving type dual spindle generator through coupling.

The angle of the blade of said two groups of wind wheel group A and wind wheel group B is opposite, and after capturing wind energy, two groups of wind wheels are just done the opposite rotation of rotation direction, and the rotor and the rotating stator that drive the direct driving type dual spindle generator are respectively done backward rotation.

The generating efficiency of two group wind wheel driving type wind driven generators of the utility model is far longer than the generator of traditional single wind wheel group, and wind wheel is represented with following formula from the wind energy power absorbed:

P _wt=1/2C _pAρv ³

P wherein _WtBe the wind wheel output power, C _pBe the power factor of branch opinion, A is the wind wheel wind sweeping area, and ρ is an air density; V is a wind speed, can be found out by formula, and the output power of wind wheel is directly proportional with the cube of wind speed; And wind speed provides the essential condition of wind wheel rotation, and under the constant condition of wind speed, the relative rotation speed of two groups of counter-rotational rotor shafts of two groups of wind wheel drive-type wind energy conversion systems is much larger than the rotating speed of traditional single wind wheel group wind energy conversion system; The angle of the blade capturing wind energy of two groups of wind wheels is opposite; After capturing wind energy, the rotor shaft that drives is separately done reverse rotation, and the rotor and the rotating stator that drive generator are more respectively done reciprocal rotation; Thereby improved the rotating speed of the relative stator of generator amature, reached better generating efficiency.

The vertical shaft-type of the utility model can also be caught the wind energy of any direction simultaneously; Need be to wind apparatus; Do not exist yet and turn round the cable and the problem of untying the mooring rope, simple in structure, easy to maintenance, be fit to middle-size and small-size, wind energy power supply system independently; Its structure also is fit to building integrated, is the preferred product of green low-carbon.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the perspective view of the utility model.

Wherein, the 1st, wind wheel group A, the 2nd, bearing support, the 3rd, coupling, the 4th, direct driving type dual spindle generator, the 5th, coupling, the 6th, upper bearing bracket, the 7th, wind wheel group B, the 8th, step, the 9th, pylon.

Embodiment

Embodiment 1: a kind of two group wind wheel driving type wind driven generators; Its wind wheel group A (1) is installed in the top of pylon (9) with bearing support (2); Wind wheel group B (7) is installed in the bottom of pylon (9) with upper bearing bracket (6), step (8); The rotor shaft of the rotor shaft of wind wheel group A (1) and direct driving type dual spindle generator (4) is connected with coupling (3); The rotor shaft of wind wheel group B (7) is connected with coupling (5) with the turnable stator of direct driving type dual spindle generator (4), after two groups of wind wheel capturing wind energy, produces counter-rotational mechanical energy and drives generator for electricity generation.

Claims

1. organize the wind wheel driving type wind driven generator for one kind pair; It is characterized in that forming by wind wheel group A (1), wind wheel group B (7), direct driving type dual spindle generator (4), pylon (9), bearing support (2,6,8) and coupling (3,5); Wind wheel group A (1) is installed in the top of pylon (9) with bearing support (2), is connected through the rotor shaft of coupling (3) with the direct driving type dual spindle generator (4) that is installed in pylon (9) middle part;

Wind wheel group B (7) with two groups of bearing supports (6,8) up and down be installed in direct driving type dual spindle generator (4) below, rotor shaft is connected with the turnable stator of direct driving type dual spindle generator (4) through coupling (5).

2. two group wind wheel driving type wind driven generator as claimed in claim 1; The angle of blade that it is characterized in that said two groups of wind wheel group A (1) and wind wheel group B (7) is opposite; After capturing wind energy; Two groups of wind wheels are just done the opposite rotation of rotation direction, and the rotor and the rotating stator that drive the direct driving type dual spindle generator are respectively done backward rotation.