CN211737368U

CN211737368U - Wind generating set

Info

Publication number: CN211737368U
Application number: CN202020114985.1U
Authority: CN
Inventors: 姜楠楠; 郝爱存; 何建新
Original assignee: Tianjin Kehui New Energy Technology Development Co ltd
Current assignee: Zhong Huan Ke Ang Beijing Technology Co ltd
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2020-10-23
Anticipated expiration: 2030-01-19

Abstract

The utility model relates to a wind power generation technical field especially relates to a wind generating set, through set up a rotor and 2 at least generator structures in the shell of aircraft nose, and set up this rotor and impeller fixed connection, this 2 at least generator structures all produce current under the drive of this rotor, and this 2 at least generator structure parts or whole through the converter with the electric wire netting be connected, structure through this kind of a rotor drive 2 at least generator structures, the inseparable arrangement of aerogenerator aircraft nose inner space has been realized, thereby under the condition that does not increase rotor quantity and rotor diameter, the aerogenerator power has directly been increased, and this wind generating set heat dispersion is good, the cost of manufacture is low, has very strong practicality.

Description

Wind generating set

Technical Field

The utility model relates to a wind power generation technical field especially relates to a wind driven generator.

Background

At present, wind power generators in the world are generally of permanent magnet direct-drive or double-feed type, and the power generation principles are as follows: wind energy is converted into mechanical energy, and the mechanical energy is converted into electric energy.

However, both the permanent magnet motor and the doubly-fed generator have only one generator, and as the power of the wind turbine generator is continuously improved, the size of the head of the wind turbine generator is larger. For the generator of permanent magnetism, the diameter of the stator and the rotor of aircraft nose position will constantly increase to just can arrange more magnet steel on stator and rotor, with the power of increase generator, this must bring the aircraft nose size and need constantly increase, inside idle space is too big, and poor and the cost-push's of thermal diffusivity problem. The doubly-fed wind generator is required to drive a generator with higher power, and the gearbox of the generator is also larger, which inevitably causes the problems of increasing the size of the machine head, poor heat dissipation and increased cost, which are not desirable for those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of the existing problems, the utility model discloses a wind generating set, which comprises an electric network, a tower frame, a machine head positioned at the top of the tower frame and an impeller connected with the machine head;

the aircraft nose includes shell, a rotor and 2 at least generator structures, just the rotor with 2 at least generator structures all set up in the shell, the rotor with impeller fixed connection, 2 at least generator structures all are in the drive of rotor produces the electric current, just 2 at least generator structure part or all pass through the converter with the electric wire netting is connected.

In the wind turbine generator system, the at least 2 generator structures are stators;

at least 2 stators are sequentially sleeved on the rotor at intervals, each stator is fixed on the inner wall of the shell, and the rotor can rotate relative to each stator;

and magnetic steel is arranged on the surface of the rotor opposite to the surface of each stator, and each stator is connected with the power grid through the converter.

In the wind generating set, 2 stators are fixedly arranged in the shell, and the 2 stators are respectively positioned at two ends of the shell.

In the wind generating set, the magnetic steel is fixed on the rotor and the stator in a sticking mode.

In the wind turbine generator system, the at least 2 generator structures include a plurality of stators and a plurality of generators, and a gear box is further arranged in the housing;

the stators are sleeved on the rotor, the stators are fixed on the inner wall of the shell, the rotor can rotate relative to the stators, magnetic steel is arranged on the surface of the rotor opposite to each stator, and each stator is connected with the power grid through the converter;

and one end of the rotor, which is not connected with the impeller, is connected with a plurality of generators through the gear box, and the generators are connected with the power grid.

In the wind turbine generator system, the rotor is connected with the gear box through a coupler.

In the wind turbine generator system, the generator is a squirrel-cage generator.

The impeller comprises a wheel disc and a plurality of blades connected to the wheel disc, and the wheel disc is fixedly connected with the rotor through a coupler.

Above-mentioned utility model has following advantage or beneficial effect:

the utility model discloses a wind generating set, through set up a rotor and 2 at least generator structures in the shell of aircraft nose, and set up this rotor and impeller fixed connection, this 2 at least generator structures all produce electric current under the drive of this rotor, and this 2 at least generator structure parts or whole are connected with the electric wire netting through the converter, structure through 2 at least generator structures of this kind of rotor drive, the inseparable arrangement of aerogenerator aircraft nose inner space has been realized, thereby under the condition that does not increase rotor quantity and rotor diameter, the aerogenerator power has directly been increased, and this wind generating set heat dispersion is good, the cost of manufacture is low, has very strong practicality.

Drawings

The invention and its features, aspects and advantages will become more apparent from a reading of the following detailed description of non-limiting embodiments with reference to the attached drawings. Like reference symbols in the various drawings indicate like elements. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention.

Fig. 1 is a schematic structural diagram of a wind turbine generator set according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a wind generating set in the second embodiment of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific examples, which should not be construed as limiting the invention.

The first embodiment is as follows:

as shown in fig. 1, the present embodiment discloses a wind turbine generator system, specifically, the wind turbine generator system includes a power grid 17, a tower 11, a machine head located at the top of the tower 11, and an impeller 14 connected to the machine head; the handpiece comprises a shell 12, a rotor 13 and 2 stators 15, wherein the rotor 13 and 2 stators 15 are arranged in the shell 12, the rotor 13 is fixedly connected with an impeller 14 to rotate under the driving of the impeller 14, the 2 stators 15 are sequentially sleeved on the rotor 13 at intervals, the 2 stators 15 are all fixed on the inner wall of the shell 12, the rotor 13 can rotate relative to the stators 15, magnetic steel (not shown in the figure) is arranged on the surface of the rotor 13 opposite to each stator 15, so that the 2 stators 15 generate current under the driving of the rotor 13, the 2 stators 15 are all connected with a power grid 17 through a converter 16, when the impeller 14 is blown by wind, the rotor 13 rotates, and because the magnetic steel is arranged on the stator 15 and the rotor 13, the magnetic field on the rotor 13 can be cut with the magnetic field on the 2 stators 15 to generate current during rotation, thereby realizing the simultaneous power generation of the 2 stators 15, the electricity generated by the 2 stators 15 is integrated by the converter 16 and then transmitted to the grid 17.

In this embodiment, the 2 stators 15 are respectively located at two ends of the housing 12 to achieve reasonable utilization of the head space.

In this embodiment, the magnetic steel is fixed to the rotor 13 and the stator 15 by means of adhesion.

In this embodiment, the impeller 14 includes a wheel disc and a plurality of blades connected to the wheel disc, and the wheel disc is fixedly connected to the rotor 13 through a coupling, so that the rotor 13 can be driven by the impeller 14 to rotate.

In addition, when the fan is large enough, the rotor can drive 3 or more stators to generate power, and at this time, only 3 or more stators need to be arranged in the shell, and the rotor can penetrate through the stators one by one, which is not described in detail!

Example two:

as shown in fig. 2, the present embodiment discloses a wind power generator, specifically, the wind power generator includes a power grid 27, a tower 21, a machine head located at the top of the tower 21, and an impeller 24 connected to the machine head; the handpiece comprises a shell 22, a rotor 23, a stator 25 and a generator 29, wherein the rotor 23, the stator 25 and the generator 29 are all arranged in the shell 22, the stator 25 is sleeved on the rotor 23, the stator 25 is fixed on the inner wall of the shell 22, the rotor 23 can rotate relative to the stator 25, magnetic steel (not marked in the figure) is arranged on the surfaces of the rotor 23 and the stator 25 which are arranged oppositely, and the stator 25 is connected with a power grid 27 through a converter 26; one end of the rotor 23 not connected to the impeller 24 (if the end of the rotor 23 connected to the wheel disc of the impeller 24 is the head end of the rotor 23, the end of the rotor 23 not connected to the impeller 24 is the tail end of the rotor 23) is connected to the generator 29 through the gear box 28, the rotor 23 is driven by the impeller 24 to rotate, the gear box 28 is driven to rotate, the generator 29 is driven to generate electricity, and the first generator 29 is connected to the power grid 27. Specifically, when wind blows the impeller 24 to rotate, so as to drive the rotor 23 to rotate, the magnetic fields on the rotor 23 and the stator 25 are cut mutually, so that the stator 25 generates electricity, generates current, and transmits the current to the power grid 27 through the converter 26 to generate electricity; when the rotor 23 rotates, the gear box 28 in the head of the generator 29 is driven, the gear box 28 transmits wind energy to the generator 29 in the form of mechanical energy to drive the generator 29 to generate electricity, and the current generated by the generator 29 is transmitted to the network through the converter 26 to generate electricity, so that the effect that one rotor 23 drives 2 generator structures to generate electricity is achieved.

In the present embodiment, the rotor 23 is connected to the gear box 28 through a coupling, so that the gear box 28 can rotate under the driving of the rotor 23.

In the present embodiment, the generator 29 is a squirrel-cage generator 29, so that when the wind is low, only the stator 25 generates electricity before the speed of the squirrel-cage generator 29 reaches the rated speed, and the squirrel-cage generator 29 rotates along with the rotation, but is not merged into the power grid 27; when the wind is strong, after the rated speed of the squirrel-cage generator 29 is reached, the squirrel-cage generator 29 is connected to the grid to generate electricity, and the squirrel-cage generator 29 can be directly connected with the power grid 27 without being connected with the power grid 27 through the converter 26, so that the converter 26 can be reduced, and the equipment cost is saved.

In this embodiment, the impeller 24 includes a disk and a plurality of blades connected to the disk, and the disk is fixedly connected to the rotor 23 through a coupling.

In addition, when the fan is made large enough, 2 or more stators can be sleeved on the rotor, and/or more generators can be connected to the end of the gear box to enable the rotor to drive more stators and/or generators to generate power, which will not be described in detail!

Those skilled in the art will appreciate that variations may be implemented by those skilled in the art in combination with the prior art and the above-described embodiments, and will not be described herein in detail. Such variations do not affect the essence of the present invention, and are not described herein.

The above description is directed to the preferred embodiment of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that devices and structures not described in detail are understood to be implemented in a manner common in the art; without departing from the scope of the invention, it is intended that the present invention shall not be limited to the above-described embodiments, but that the present invention shall include all the modifications and variations of the embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still fall within the protection scope of the technical solution of the present invention, where the technical entity does not depart from the content of the technical solution of the present invention.

Claims

1. A wind generating set is characterized by comprising a power grid, a tower frame, a machine head positioned at the top of the tower frame and an impeller connected with the machine head;

2. The wind generating set of claim 1, wherein the at least 2 generator structures are each a stator;

3. The wind generating set according to claim 2, wherein 2 stators are fixedly arranged in the housing, and the 2 stators are respectively positioned at two ends of the housing.

4. The wind turbine generator system of claim 2, wherein the magnetic steel is fixed to the rotor and the stator by means of gluing.

5. A wind power plant according to claim 1, wherein said at least 2 generator structures comprise a number of stators and a number of generators, and a gearbox is further provided within said housing;

6. The wind turbine of claim 5, wherein the rotor is coupled to the gearbox by a coupling.

7. The wind generating set of claim 5, wherein the generator is a squirrel cage generator.

8. The wind generating set of claim 1, wherein the impeller comprises a disk and a plurality of blades attached to the disk, and the disk is fixedly attached to the rotor by a coupling.