CN201443473U

CN201443473U - Wind power generation device

Info

Publication number: CN201443473U
Application number: CN2009200273357U
Authority: CN
Inventors: 孙显秀
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-06-09
Filing date: 2009-06-09
Publication date: 2010-04-28
Anticipated expiration: 2019-06-09

Abstract

The utility model discloses a wind power generation device which comprises an electric generator, a spindle in transmission connection with the electric generator, and a blade in transmission connection with the spindle, wherein a fixed pedestal provided with a hollow cavity in the inner part thereof is installed on the spindle; a speed regulating shaft is arranged inside the spindle, a power-driven device is in transmission connection with one end of the speed regulating shaft, the other end of the speed regulating shaft is positioned inside the hollow cavity, and a speed regulating shaft bevel gear is installed at the other end of the speed regulating shaft; the blade is mounted on the fixed pedestal and rotationally connected with the fixed pedestal; and a blade bevel gear is connected to one end of the blade near the fixed pedestal and meshes with the regulating-shaft bevel gear. The utility model can enable the electric generator to run in a regular rotating speed, has the advantages of stable power generation frequency, low variation in voltage and strong loading capability, saves expensive transducer, rectifier, storage cell and the like, and reduces cost and pollution.

Description

Wind generating unit

Technical field

The utility model relates to a kind of wind power plant, particularly a kind of when wind direction changes the automatic wind generating unit of omnidirectional tracking wind regime direction.

Background technique

Along with the high speed development of industrial and agricultural production and the demand that improves day by day electric power of living standards of the people increase sharply, imbalance between supply and demand is very outstanding.The generation current mode is mainly based on thermal power generation and water generating.Concerning a country, can be limited for the water resource of generating, and thermal power generation is to be fuel with the coal, thermal power generation can cause certain pollution to environment, particularly coal is non-renewable energy resources, and is valuable industrial chemicals, and underground reserves are limited, and wind-force and solar energy, then be inexhaustible cheap clear energy sources, good market prospects are arranged, therefore should develop energetically, actively apply.

Present known tower-type wind generating device, its generator is fixed on the platform of head tower top, alternator shaft is connected with the blade wheel by bearing bracket, the blade wheel is equipped with blade up and down, blade links to each other with the directed wind wing, so that blade aligns wind direction, utilize the wind-drive blade to drive generator shaft and rotate and generate electricity.This device fan blade size can not be adjusted automatically with the wind-force size, also needs to determine wind direction by the directed wind wing stationarity of not only complicated operation, and influence generating and the raising of generating capacity.Bigger problem is that blade does not rotate, and when surpassing design wind speed, add braking device.Though at present wind-driven generator differs from one another, be mostly the generating of traditional vertical helical blade mode of structure, it is high that it has setting height(from bottom) to require, and the helical blade diameter is big, and digs that basic piling engineering is big, geologic requirements is high and the high serial defective of cost.

The model utility content

Problem to be solved in the utility model is to overcome above technical deficiency, and a kind of easy for installation, simple in structure, wind generating unit that cost of production is low is provided.

For addressing the above problem, the utility model by the following technical solutions:

A kind of wind generating unit, main shaft that comprises generator, is in transmission connection with generator and the blade that is connected with spindle, it is characterized in that: the fixed base that an inside has cavity is installed on the described main shaft, be provided with the speed governing axle in the main shaft, a wherein end and the Power Drive Unit of speed governing axle are in transmission connection, the other end is positioned at cavity and speed governing axial cone gear is installed, described blade installation is rotationally connected on fixed base and with fixed base, described blade is connected with the blade bevel gear near an end of fixed base, and described blade bevel gear is meshed with speed governing axial cone gear.

Below be the utility model for further improvement of these options:

Described blade installation is on the blade base, and described blade base and fixed base are rotationally connected, and a wherein end of blade base is positioned at cavity, and described blade bevel gear is installed in an end that is positioned at cavity of blade base.

As a kind of improvement:

Described blade bevel gear is three, evenly arranges at the circumferencial direction of fixed base.

Further improve:

Described blade gear is provided with positioning block, and blade and blade base are rotated in 0 °-45 ° along its axis.

Blade is under the effect of speed-adjustable motor, can be parallel to wind direction or perpendicular to rotating between 0 °-45 ° of the wind directions, in the design wind speed scope, adjust the blade blowing area automatically, when surpassing design wind speed, blade reduces blowing area or vertical and wind direction under the damping of speed-adjustable motor, the surface of contact maximum of wind direction and blade 7 in the time of 0 °, offer the torque maximum of fixed base, when angle strengthens, then reduce.

The gear that initiatively generates electricity is installed on the described main shaft, the driven generating gear that is meshed with the gear that initiatively generates electricity is installed on the generator.

Further improve:

Described Power Drive Unit comprises speed-adjustable motor, on the pto of speed-adjustable motor driving gear is installed, and is provided with the driven gear that is meshed with driving gear with the corresponding position of driving gear on the speed governing axle.

During work, give stabilized (steady-state) speed of speed governing axial cone gear by speed-adjustable motor, thereby reach design speed 200 and change (is example with 5 kilowatts), when wind speed 8 meter per seconds, when the rotating speed of fixed base is 200 commentaries on classics, blade to fixed base rotation torque, makes the fixed base rotation under the wind-force effect, just synchronous with speed governing axial cone gear, at this moment, generator by with the outside outputting power of the gear that initiatively generates electricity of fixed base interlock, when wind speed surpasses 8 meter per seconds, under the effect of wind-force, the fixed base rotating speed increases when running, and is asynchronous with the blade bevel gear of speed governing bevel gear institute transmission, and the blade bevel gear is moved to a direction simultaneously, make the blade adjustment angle of facining the wind, reach fixed base reduction of speed purpose,, make generator obtain rated speed up to synchronously.

When if generator load strengthens, the gear reduction of initiatively generating electricity, because of the gear that initiatively generates electricity by main shaft and fixed base interlock, at this moment fixed base slows down, and makes speed governing axial cone gear with the asynchronous operation of blade bevel gear, thereby makes blade to adjusting in the other direction, increase the angle of facining the wind, its torque is increased,, reach the speed governing purpose until synchronously.

When wind speed reduced, fixed base slowed down, and made speed governing axial cone gear with the asynchronous operation of blade bevel gear, thereby made blade to adjusting in the other direction, increased the angle of facining the wind, and its torque is increased, and until synchronously, reached the speed governing purpose.

The utility model adopts technique scheme, has the following advantages:

1, the utility model can make generator work under fixed rotating speed, the generating frequency stabilization, and voltage functuation is little, and load capacity is strong.

2, compare with existing similar electricity generating device, saved expensive frequency variator, rectifier, cost is reduced in accumulate ponds etc., reduces and pollutes.

3, the utility model is identical with existing power plant power supply mode because of generation mode, and waveform is identical, can directly be incorporated into the power networks, and has reduced cost of electricity-generating, has improved grid connection efficiency.

4, because of frequency stabilization, voltage is stable, can use separately from net, directly drives all consumers.

5, can be parallel to wind direction because of blade and perpendicular to 0 ° of-45 ° of adjustment between the wind direction, when wind speed surpasses design wind speed, can be perpendicular to wind direction, allow the area of contact minimum of blade and wind direction, can remove brake device from, improved safety coefficient.

The utility model is described in further detail below in conjunction with drawings and Examples:

Description of drawings

Accompanying drawing 1 is the utility model embodiment's a structural representation;

Accompanying drawing 2 is the installation arrangement mode schematic representation of blade among the utility model embodiment.

Among the figure: the 1-fixed base; The 2-main shaft; 3-speed governing axle; 4-speed governing bevel gear; 5,51,52-blade bevel gear; The 6-driving gear; The 7-blade; The 8-blade seat; The 9-gear that initiatively generates electricity; The driven generating gear of 10-; The 11-generator; The 12-driven gear; The 13-speed-adjustable motor; The 14-positioning block.

The specific embodiment mode

Embodiment, as Fig. 1, shown in Figure 2, a kind of wind generating unit, comprise generator 11, the main shaft 2 that is in transmission connection with generator 11 and three blades 7 that are in transmission connection with main shaft 2, the fixed base 1 that an inside has cavity is installed on this main shaft 2, the centre of main shaft 2 is provided with speed governing axle 3, a wherein end and the Power Drive Unit of speed governing axle 3 are in transmission connection, the other end is positioned at cavity and speed governing bevel gear 4 is installed, described blade 7 is installed on the fixed base 1 and with fixed base 1 and is rotationally connected, described three blades 7 are connected with blade bevel gear 5 respectively near an end of fixed base 1, blade bevel gear 51, blade bevel gear 52, three blades 7 are evenly arranged at the circumferencial direction of fixed base 1, described blade 7 is installed on the blade base 8, described blade base 8 is rotationally connected with fixed base 1, a wherein end of blade base 8 is positioned at cavity, described blade bevel gear 5, blade bevel gear 51, blade bevel gear 52 is installed in an end that is positioned at cavity of blade base 8 respectively, described blade bevel gear 5, blade bevel gear 51, be respectively equipped with positioning block 14 on the blade bevel gear 52, blade 7 and blade base 8 are rotated in 0 °-45 ° along its axis, because of blade can be parallel to wind direction and perpendicular to 0 ° of-45 ° of adjustment between the wind direction, when wind speed surpasses design wind speed, can be perpendicular to wind direction, allow the area of contact minimum of blade and wind, can remove brake device from, improve safety coefficient.

On the described main shaft 2 gear 9 that initiatively generates electricity is installed, the driven generating gear 10 that is meshed with the gear 9 that initiatively generates electricity is installed on the generator 11, be connected with the speed governing axle 3 synchronous away from an end of fixed base 1 on the described main shaft 2 with main shaft 2, described Power Drive Unit comprises speed-adjustable motor 13, driving gear 6 is installed on the pto of speed-adjustable motor 13, is provided with the driven gear 12 that is meshed with driving gear 6 with driving gear 6 corresponding positions on the speed governing axle 3.Described speed governing bevel gear 4, blade bevel gear 5, blade bevel gear 51, blade bevel gear 52 are the quadrature straight bevel gear.

During work, give 4 one stabilized (steady-state) speeds of speed governing bevel gear by speed-adjustable motor/3, reach design speed 200 and change (is example with 5 kilowatts), when wind speed 8 meter per seconds, under the effect of wind-force, blade 7 is given the fixed base active force, and fixed base is rotated, and the interlock main shaft rotates, the rotating speed of fixed base 1 is 200 commentaries on classics, just synchronous with speed governing bevel gear 4, at this moment, generator 11 by with the gear 9 outside outputting powers that initiatively generate electricity of fixed base 1 interlock, when wind speed surpasses 8 meter per seconds, when fixed base 1 rotating speed increases running, with the blade bevel gear 5 of 4 transmissions of speed governing bevel gear, blade bevel gear 51, blade bevel gear 52 is asynchronous, makes blade bevel gear 5, blade bevel gear 51, blade bevel gear 52 moves to a direction simultaneously, make blade 7 adjust the angle of facining the wind, reach fixed base 1 reduction of speed purpose,, make generator 11 obtain rated speed up to synchronously.

When if generator load strengthens, the gear 9 that initiatively generates electricity slows down, gear 9 and fixed base 1 are synchronous because of initiatively generating electricity, at this moment fixed base 1 slows down, and makes speed governing bevel gear 4 with blade bevel gear 5, blade bevel gear 51, the 52 asynchronous operations of blade bevel gear, thereby makes blade 7 to adjusting in the other direction, increase the angle of facining the wind, its torque is increased,, reach the speed governing purpose until synchronously.

When wind speed reduced, fixed base 1 slowed down, and made speed governing bevel gear 4 with blade bevel gear 5, blade bevel gear 51, the 52 asynchronous operations of blade bevel gear, thereby make blade 7 to adjusting in the other direction, increase the angle of facining the wind, its torque is increased, until synchronously, reach the speed governing purpose.

Claims

1. wind generating unit, comprise generator (11), main shaft (2) that is in transmission connection with generator (11) and the blade (7) that is in transmission connection with main shaft (2), it is characterized in that: the fixed base (1) that an inside has cavity is installed on the described main shaft (2), be provided with speed governing axle (3) in the main shaft (2), a wherein end and the Power Drive Unit of speed governing axle (3) are in transmission connection, the other end is positioned at cavity and speed governing axial cone gear (4) is installed, described blade (7) is installed in fixed base (1) and upward and with fixed base (1) is rotationally connected, described blade (7) is connected with blade bevel gear (5 near an end of fixed base (1), 51,52), described blade bevel gear (5,51,52) be meshed with speed governing axial cone gear (4).

2. wind generating unit according to claim 1, it is characterized in that: described blade (7) is installed on the blade base (8), described blade base (8) is rotationally connected with fixed base (1), a wherein end of blade base (8) is positioned at cavity, and described blade bevel gear (5,51,52) is installed in the end that is positioned at cavity on the blade base (8).

3. wind generating unit according to claim 2 is characterized in that: described blade bevel gear (5,51,52) is three, evenly arranges at the circumferencial direction of fixed base (1).

4. wind generating unit according to claim 2 is characterized in that: described blade gear (5,51,52) is provided with positioning block (14).

5. wind generating unit according to claim 3 is characterized in that: the gear that initiatively generates electricity (9) is installed on the described main shaft (2), the driven generating gear (10) that is meshed with the gear that initiatively generates electricity (9) is installed on the generator (11).

6. wind generating unit according to claim 5, it is characterized in that: described Power Drive Unit comprises speed-adjustable motor (13), driving gear (6) is installed on the pto of speed-adjustable motor (13), and speed governing axle (3) is gone up with the corresponding position of driving gear (6) and is provided with the driven gear (12) that is meshed with driving gear (6).