CN102022283A - Double power generator combined wind power generator unit driven directly by ultra-large wind wheel - Google Patents

Abstract

The invention discloses a double power generator combined wind power generator unit driven directly by ultra-large wind wheel, which comprises a blade, a hub connected with the blade, a variable pitch system and a power generator, wherein the power generator is connected to a yaw rotation bracket which is connected to a tower barrel, the power generator comprises a casing, a stator, a rotor, a fixed shaft and a moving shaft which is connected with the rotor, the power generator further comprises a front power generator and a rear power generator which are connected to front and rear sides of the yaw rotation bracket respectively, the moving shafts of the two power generators are both sleeved inside the respective fixed shafts through a bearing sleeve and penetrate through the fixed shafts, the front end of the moving shaft of the front power generator is connected with the hub and the rear end thereof is in transmission connected with the front end of the moving shaft of the rear power generator. The wind power generator unit has the advantages of: reducing the weight of single power generator and balancing overall center of gravity, dramatically lowering dead shaft load and enhancing stability and safety. The wind power generator unit can enable the two power generators to generate power simultaneously and can adjust the speed of the two power generators according to wind speed in order for the linkage with power grid, thereby raising the utilization rate of wind energy.

Description

The super sized type wind wheel directly drives double-generator combined type wind driven generator group

Technical field

The present invention relates to a kind of wind power generating set, particularly a kind of super sized type wind wheel directly drives double-generator combined type wind driven generator group.

Background technique

In recent years, the development of the wind-powered electricity generation of emerging market rapidly.The back of the body in national policy support and energy supply anxiety

Under the scape, the wind-powered electricity generation of China particularly wind power equipment manufacturing industry also emerges rapidly, has become the most active place of global wind-powered electricity generation.

At present, the direct-driving type wind power generation unit uses and has many good qualities, but also has a lot of deficiencys. and generator set is positioned at complete machine one side, thereby the wind power generating set center of gravity is turned forward, and causes tower tube moment of flexure excessive, less stable; 2. owing to be subjected to the restriction of condition, simple increase generator volume is not suitable for; 3. along with the power of generator is increasing, the volume and weight of generator is also increasing, and dead axle load is bigger, occurs bending and deformation poor stability easily; 4. Wind Power Utilization efficient is not high.

Summary of the invention

For solving above technical deficiency, the invention provides a kind of reasonable in design, stability is high, and the super sized type wind wheel that wind energy utilization is high directly drives double-generator combined type wind driven generator group.

The present invention is achieved by the following measures:

A kind of super sized type wind wheel of the present invention directly drives double-generator combined type wind driven generator group, comprise blade, the wheel hub that connects blade, become slurry system and generator, generator is connected on the driftage rotary support, the driftage rotary support is connected on the tower tube, described generator comprises casing, stator, rotor, dead axle and the moving axis that is connected rotor, generator and back generator before described generator comprises, be connected to both sides, driftage rotary support front and back, the moving axis of two generators all by bearing housing in dead axle separately and pass dead axle, the moving axis front end of preceding generator connects wheel hub, and the rear end is in transmission connection with the moving axis front end of back generator.

Specifically, above-mentioned dead axle is the tapered hollow structure of both ends open, the open-ended place of dead axle is provided with the shelves platform that turns up, and the shelves platform is connected between the end cap outside and the driftage rotary support sidewall outside of casing, and described moving axis passes dead axle and extends the casing of generator.

Be connected with between the moving axis of above-mentioned two generators and run through the carbon fiber transmission shaft that the driftage rotary support does not contact with the driftage rotary support, improved transmission efficiency.

More reasonable for the center of gravity distribution, Wind Power Utilization efficient is higher, and the power of above-mentioned preceding generator is greater than the power of back generator.

Preferably, the front-end and back-end in the above-mentioned dead axle are respectively arranged with fore bearing and rear bearing.

The invention has the beneficial effects as follows: adopt both sides, two generators front and back layout, under the situation that does not increase separate unit generator volume, realized the significantly raising of the generator power of the assembling unit effectively.The mode of both sides layout before and after two generators, active balance the center of gravity of complete machine unit.Simultaneously, because moment of torsion is distributed in proportion by two generators, this has alleviated separate unit generator dead axle load, the stability and the Security that have improved generator moving axis and dead axle to a great extent.And, by suitable control, two generators are generated electricity simultaneously, and can adjust two generators by wind speed size speed governing incision electrical network, make full use of the wind energy that wind wheel is caught, improved the utilization ratio of wind energy.

Description of drawings

Fig. 1 is a cut-away section structural representation of the present invention.

Fig. 2 is preceding generator cross-sectional view.

Among the figure: 1 fan blade, 2 preceding generators, 3 carbon fiber transmission shafts, 4 driftage rotary supports, 5 back generators, 6 wheel hubs, 7 tower tubes, 8 become slurry system, 9 yaw systems, 10 front covers, 11 casings, 12 rear end covers, 13 dead axles, 14 rear bearings, 15 moving axis, 16 stators, 17 rotor field spiders, 18 rotors, 19 fore bearings.

Embodiment

Now be described further with accompanying drawing in conjunction with the embodiments:

As shown in Figure 1, 2, comprise fan blade 1, connect wheel hub 6, generator, the connection wheel hub 6 of fan blade 1 anddrive moving axis 15, driftage rotary support 4 that generator amature rotates, become slurry system 8 and tower tube 7.Generator is connected on the driftage rotary support 4, driftage rotary support 4 is connected on the tower tube 7 by yaw system 9, generator comprises casing 11,stator 16,rotor 18,dead axle 13 and themoving axis 15 that is connectedrotor 18, generator 2 and back generator 5 were connected to driftage both sides, rotary support 4 front and back before generator adopted.Themoving axis 15 of two generators all by bearing housing indead axle 13 separately and passdead axle 13, the moving axis front end of preceding generator 2 connects wheel hub 6, the rear end is in transmission connection with the moving axis front end of back generator 5.

Specifically, generator comprisesfront cover 10, casing 11,rear end cover 12,stator 16,rotor 18 andgenerator rotor support 17,dead axle 13 is the tapered hollow structure of both ends open,dead axle 13 open-ended places are provided with the shelves platform that turns up, the shelves platform is connected between the end cap outside and the driftage rotary support 4 sidewalls outside of casing 11, thereby generator is fixed on the driftage rotary support 4, and movingaxis 15 passesdead axle 13 and extends the casing of generator.Be provided with fore bearing 19 and rear bearing 14 before and after in the hollow cavity of dead axle.In thedead axle 13 that the fore bearing 19 at interval andrear bearing 14 were enclosed within two generators before and after the front and rear of movingaxis 15 all passed.The front and rear of movingaxis 15 connects thegenerator rotor support 17 of two generators respectively, just connects rotor 18.Be connected with carbon fiber transmission shaft 3 between the generator of front and back, because transmission shaft has adopted carbon fibre material, its weight and intensity all are greatly improved, therefore need not design independent supporting structure for transmission shaft, transmission shaft does not have directly with rotary support and is connected, thereby effectively overcome unit in installation process to the requirement of transmission shaft to moderate, improved the installation capability of unit to a great extent, and improved transmission efficiency.The preceding generator 2 that is connected driftage rotary support 4 front sides is greater than the back generator 5 that is connected driftage rotary support 4 rear sides, and it is more reasonable that center of gravity is distributed, and Wind Power Utilization efficient is higher.More reasonable for the center of gravity distribution, Wind Power Utilization efficient is higher, and the power of preceding generator 2 is greater than the power of back generator 5.

Its working principle is:

Electric generator structure novelty, uniqueness, the duplex bearing supported moving axis of employing dead axle inner chamber, while two generator balance machine gravities, and alleviate the dead axle load greatly.Moving axis 13 can support wind wheel load, and the transmitted power moment of torsion is given preceding generator, goes back the transmitted power moment of torsion and gives the back generator, has improved the utilization ratio of wind energy.

The foregoing description is described to be in order to specifying this patent, though describe by specific term in the literary composition,

But can not limit the protection domain of this patent with this; being familiar with the personage of this technical field can be after the spirit of understanding this patent and principle change or revises it and reach equivalent purpose; and this equivalence change and modification all should be covered by the claim scope and define in the category.

Claims (5)

1. a super sized type wind wheel directly drives double-generator combined type wind driven generator group, comprises blade, connection

The wheel hub of blade, change slurry system and generator, generator is connected on the driftage rotary support, the driftage rotary support is connected on the tower tube, described generator comprises casing, stator, rotor, dead axle and is connected the moving axis of rotor, it is characterized in that: generator and back generator before described generator comprises, be connected to both sides, driftage rotary support front and back, the moving axis of two generators all by bearing housing in dead axle separately and pass dead axle, the moving axis front end of preceding generator connects wheel hub, and the rear end is in transmission connection with the moving axis front end of back generator.

2. directly drive double-generator combined type wind driven generator group according to the described super sized type wind wheel of claim 1, it is characterized in that: described dead axle is the tapered hollow structure of both ends open, the open-ended place of dead axle is provided with the shelves platform that turns up, the shelves platform is connected between the end cap outside and the driftage rotary support sidewall outside of casing, and described moving axis passes dead axle and extends the casing of generator.

3. directly drive double-generator combined type wind driven generator group according to the described super sized type wind wheel of claim 1, it is characterized in that: be connected with between the moving axis of described two generators and run through the carbon fiber transmission shaft that the driftage rotary support does not contact with the driftage rotary support.

4. directly drive double-generator combined type wind driven generator group according to the described super sized type wind wheel of claim 1, it is characterized in that: the power of preceding generator is greater than the power of back generator.

5. directly drive double-generator combined type wind driven generator group according to the described super sized type wind wheel of claim 1, it is characterized in that: the front-end and back-end in the described dead axle are respectively arranged with fore bearing and rear bearing.

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