CN112283016A

CN112283016A - Wind power generation device

Info

Publication number: CN112283016A
Application number: CN202010972282.7A
Authority: CN
Inventors: 戴利平
Original assignee: Jiangxi Datang International New Energy Co ltd
Current assignee: Jiangxi Datang International New Energy Co ltd
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2021-01-29
Anticipated expiration: 2040-09-16
Also published as: CN112283016B

Abstract

The invention relates to a wind power generation device which comprises a tower and a generator cabin arranged on the tower, wherein a power generation mechanism capable of converting wind energy into electric energy is accommodated in the generator cabin, the power generation mechanism comprises a central shaft, a sun gear arranged on the central shaft, a planetary gear set meshed with the sun gear, a gear ring meshed with the planetary gear set and a generator connected with the central shaft, a micro power generation impeller is arranged on the central shaft, and a large power generation impeller is arranged on the planetary gear set or the gear ring. In the technical scheme of the invention, in the process of driving the sun gear to synchronously rotate by the central shaft, the speed increaser is formed by utilizing the transmission ratio among the sun gear, the planetary gear set and the gear ring, and an auxiliary power device is not required to be added, so that the aim of improving the conversion rate of converting wind energy into electric energy by the generator is fulfilled.

Description

Wind power generation device

Technical Field

The invention relates to the technical field of wind power, in particular to a wind power generation device.

Background

Wind power generation is an environment-friendly and clean energy source, and nowadays, as earth resources are gradually exhausted and greenhouse effect is enlarged, wind power generation is more deeply valued and developed by various countries, however, the wind direction and wind speed of natural wind are uncertain, so that how to effectively remove wind energy is an important design factor of a wind power generation device.

The wind power generator is a device for generating power by utilizing wind energy, known wind power generators comprise a vertical axis wind power generator and a horizontal axis wind power generator, and because the high altitude wind speed is large, the vertical axis wind power generator is mostly adopted, the vertical axis wind power generator means that a rotating shaft of a blade of a generator is vertical to the wind direction, or a rotating surface of the blade is vertical to the wind direction, the power generation power of the vertical axis wind power generator depends on the length of the blade or the radius of an impeller, and the length of the blade of the current large wind power generator is more than 10 meters. In the using process, the defect that the large-diameter impeller is difficult to rotate at low wind speed exists, and in order to overcome the defect, an auxiliary power device is generally added in the existing power generation equipment, and the auxiliary power device needs to consume electricity, so that the utilization rate of wind energy is not high.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art or the related art.

Therefore, an object of the present invention is to provide a wind turbine generator that can replace an auxiliary power unit in an existing wind turbine generator and improve the utilization rate of wind energy.

In order to achieve the above object, a first aspect of the present invention provides a wind power generation device, including a tower and a generator cabin mounted on the tower, wherein a power generation mechanism capable of converting wind energy into electric energy is accommodated in the generator cabin, the power generation mechanism includes a central shaft, a sun gear mounted on the central shaft, a planetary gear set engaged with the sun gear, a gear ring engaged with the planetary gear set, and a generator connected to the central shaft, a micro power generation impeller is mounted on the central shaft, and a large power generation impeller is mounted on the planetary gear set or the gear ring.

In the technical scheme, in the process that the central shaft drives the sun gear to synchronously rotate, the speed increaser is formed by utilizing the transmission ratio among the sun gear, the planetary gear set and the gear ring, so that the large power generation impeller can be driven to rotate under the driving action of the small power generation impeller in a low wind speed environment, an auxiliary power device is not required to be added, and the aim of improving the conversion rate of converting wind energy into electric energy by the generator is fulfilled.

In the above-described aspect, it is preferable that the planetary gear set includes a carrier on which the large power generation impeller is mounted, and a plurality of planetary gears rotatably mounted on the carrier, the planetary gears being engaged with the ring gear and the sun gear, respectively.

In the above technical solution, preferably, the gear rack includes a fixed frame and a rotating shaft integrally formed with the fixed frame, the planetary gear is mounted on the fixed frame, the rotating shaft is connected to the generator, and the rotating shaft is sleeved on the central shaft.

In the technical scheme, the rotating shaft on the gear rack is sleeved on the central shaft, so that the rotation of the central shaft driven by the sun gear and the rotation of the gear rack driven by the planet gear can independently run, power can be generated simultaneously under the condition of mutual noninterference, and the wind power conversion rate is further improved.

In any one of the above technical solutions, preferably, the sun gear sleeve is disposed on the central shaft, and further includes an air speed sensor and a clamping block electrically connected to the air speed sensor, the sun gear and the central shaft are formed with a clamping groove matched with the clamping block, the air speed sensor can control the clamping block to be clamped in the clamping groove according to the sensed air speed, and the sun gear and the central shaft are synchronously rotated.

In the technical scheme, the wind speed sensor, the clamping block and the clamping groove which are electrically connected with the wind speed sensor can realize the switching of two power generation states of the wind power generation device under the low wind speed environment and the high wind speed environment, namely, the power generation of the generator is realized by driving the central shaft to rotate through the small power generation impeller under the low wind speed environment; the small power generation impeller and the large power generation impeller simultaneously drive the generator to generate power through the central shaft in a high wind speed environment.

In any one of the above technical solutions, preferably, the central shaft is recessed toward the axis to form a first clamping portion, the inner wall of the sun gear is recessed toward the outer wall to form a second clamping portion, and the first clamping portion and the second clamping portion form the clamping groove.

In any of the above technical solutions, preferably, the cross section of the slot is circular or rectangular.

In any of the above technical solutions, preferably, the teeth on the planetary gear, the sun gear and the ring gear are helical teeth.

In any one of the above technical solutions, preferably, the micro power generation impeller includes a main body and a plurality of micro blades integrally formed with the main body, and the main body is fixedly connected to the central shaft.

In any of the above technical solutions, preferably, the large power generation impeller is composed of a plurality of large blades, and the plurality of large blades are uniformly arranged on the ring gear or the planetary gear set at intervals.

In any of the above technical solutions, preferably, the tower includes a base and a tower body installed on the base, one side of the bottom of the tower body is hinged to the base, and fixing lugs are provided on the top of the tower body, and an external traction rope can fix or detach the tower body and the base through the fixing lugs by using a junction of the base and the tower body as a fulcrum.

In the technical scheme, the wind driven generator rod can be put down through the traction rope when the wind driven generator breaks down, the wind driven generator is maintained without climbing to a high place for maintenance, so that safety accidents caused by high place operation can be effectively prevented, and the wind driven generator rod is simple in structure and has certain practical value.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a perspective view showing a wind power generation apparatus according to an embodiment of the present invention;

FIG. 2 illustrates a perspective, block diagram of a tower according to an embodiment of the present invention;

FIG. 3 is a view showing an internal structure of a wind turbine generator according to an embodiment of the present invention;

FIG. 4 is a view showing an internal structure of a wind power generation apparatus according to another embodiment of the present invention;

FIG. 5 is a block diagram of a planetary gear set according to an embodiment of the present invention;

FIG. 6 is a view showing a connection structure of a sun gear and a central shaft according to an embodiment of the present invention;

wherein, the correspondence between the reference numbers and the part names in fig. 1 to 6 is:

10 tower, 11 base, 12 tower body, 13 fixing lug, 20 generator cabin, 31 central shaft, 32 sun gear, 33 planetary gear set, 331 gear rack, 3311 fixing rack, 3312 rotating shaft, 332 planetary gear, 34 gear ring, 35 generator, 36 micro-generating impeller, 361 main body, 362 micro-blade, 37 large-scale generating impeller, 41 wind speed sensor, 42 clamping block and 43 clamping groove.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.

Wind power plants according to some embodiments of the present invention are described below with reference to fig. 1 to 6.

As shown in fig. 1 to 3, 5 and 6, a wind power generation apparatus according to an embodiment of the present invention includes a tower 10 and a generator nacelle 20 mounted on the tower 10, the generator nacelle 20 houses a power generation mechanism capable of converting wind energy into electric energy, the power generation mechanism includes a central shaft 31, a sun gear 32 mounted on the central shaft 31, a planetary gear set 33 engaged with the sun gear 32, a ring gear 34 engaged with the planetary gear set 33, and a generator 35 connected to the central shaft 31, a micro power generation impeller 36 is mounted on the central shaft 31, and a large power generation impeller 37 is mounted on the ring gear 34.

In this embodiment, in the process that the central shaft 31 drives the sun gear 32 to synchronously rotate, the transmission ratio among the sun gear 32, the planetary gear set 33 and the ring gear 34 is used to form a speed increaser, so that the large power generation impeller 37 can be driven to rotate under the driving action of the micro power generation impeller 36 in a low wind speed environment, and an auxiliary power device is not required to be added, thereby achieving the purpose of improving the conversion rate of the generator 35 for converting wind energy into electric energy.

In the present embodiment, the sun gear 32 and the central shaft 31 are integrally formed or the sun gear 32 is fixed on the central shaft 31 by a fixing member to realize the coaxial rotation of the sun gear 32 and the central shaft 31, the micro power generation impeller 36 is mounted on the central shaft 31, the large power generation impeller 37 is mounted on the planetary gear set 33 or the ring gear 34, and the power generator 35 is driven to generate power by the micro power generation impeller 36 and the large power generation impeller 37 simultaneously in a low wind speed environment by using the transmission between the sun gear and the planetary gear set 33 or the ring gear 34.

It should be noted that the large power generation impeller 37 and the micro power generation impeller 36 are distinguished according to the volume sizes of the two blades, and it is not particularly limited what volume of the two blades belongs to the large or the micro, and optionally, the volume ratio of the blades on the large power generation impeller 37 to the blades on the micro power generation impeller 36 is 1:3 to 1:8, and a preferred value is 1: 5.

As shown in fig. 1, 2, 4 to 6, a wind power generating apparatus according to another embodiment of the present invention includes a tower 10 and a generator nacelle 20 mounted on the tower 10, the generator compartment 20 houses a power generation mechanism capable of converting wind energy into electric energy, the power generation mechanism including a central shaft 31, a sun gear 32 mounted on the central shaft 31, a planetary gear set 33 meshing with the sun gear 32, a ring gear 34 meshing with the planetary gear set 33, and a generator 35 connected to the central shaft 31, the central shaft 31 is mounted with a micro power generation impeller 36, the planetary gear set 33 includes a carrier 331 and a plurality of planetary gears 332 rotatably mounted on the carrier 331, the planetary gears 332 are engaged with the ring gear 34 and the sun gear 32, respectively, and the large power generation impeller 37 is mounted on the carrier 331.

In this embodiment, when the large power generation impeller is mounted on the carrier 331, the ring gear 34 is a fixed member, and the carrier 331 is a rotating member to control the plurality of large power generation impellers 37 to rotate, so that the speed increase is achieved by the gear ratio between the sun gear 32 and the planetary gears, and thus the large power generation impeller 37 can be driven to rotate at a low wind speed, thereby generating power.

Specifically, as shown in fig. 1 to 6, the gear rack 331 includes a fixing frame 3311 and a rotating shaft 3312 integrally formed with the fixing frame 3311, the planetary gear 332 is mounted on the fixing frame 3311, the rotating shaft 3312 is connected to the generator 35, and the rotating shaft 3312 is sleeved on the central shaft 31.

In this embodiment, the rotation shaft 3312 of the gear holder 331 is fitted around the center shaft 31, so that the sun gear 32 rotates the center shaft 31 and the planetary gear drive gear holder 331 independently operate, and power can be generated simultaneously without interference with each other, thereby further improving the wind power conversion rate.

In any of the above embodiments, preferably, as shown in fig. 1 to 6, the sun gear 32 is sleeved on the central shaft 31, and further includes an air velocity sensor 41 and a clamping block 42 electrically connected to the air velocity sensor 41, a clamping groove 43 having a circular or rectangular cross section and matched with the clamping block 42 is formed on the sun gear 32 and the central shaft 31, and the air velocity sensor 41 can control the clamping block 42 to be clamped into the clamping groove 43 according to the sensed air velocity, so as to realize the synchronous rotation of the sun gear 32 and the central shaft 31.

In this embodiment, the wind speed sensor 41, and the clamping block 42 and the clamping groove 43 electrically connected thereto can realize switching between two power generation states of the wind power generation device in the low wind speed environment and the high wind speed environment, that is, the central shaft 31 is driven to rotate by the micro power generation impeller in the low wind speed environment to realize power generation of the generator; the micro power generation impeller and the large power generation impeller 37 simultaneously drive the generator to generate power through the central shaft 31 in a high wind speed environment.

Specifically, as shown in fig. 6, a first clamping portion is formed on the central shaft 31 by sinking towards the axis, a second clamping portion is formed on the inner wall of the sun gear 32 by sinking towards the outer wall, and the first clamping portion and the second clamping portion form the clamping groove 43.

In this embodiment, alternatively, the sun gear 32 and the central shaft 31 are integrally formed or the sun gear 32 is fixed on the central shaft 31 by a fixing member, so as to realize the coaxial rotation of the sun gear 32 and the central shaft 31, the fixing frame 3311 and the rotating shaft 3312 of the integrally formed structure in the gear frame 331 are replaced by a clamping groove 43 and a clamping block 42 which are matched to realize the coaxial rotation, that is, the clamping groove 43 is formed by a first clamping portion and a second clamping portion respectively formed on the fixing frame 3311 and the rotating shaft 3312, and when the clamping block 42 senses that the wind speed is greater than or equal to the preset wind speed threshold value according to the wind speed sensor 41, the clamping block 42 is driven to be clamped into the clamping groove 43, so as to realize the synchronous rotation of the fixing.

In any of the above embodiments, preferably the teeth on the planet gears, the sun gear 32 and the ring gear 34 are helical teeth.

In any of the above embodiments, preferably, as shown in fig. 1 to 4, the micro power generation impeller 36 includes a main body 361 and a plurality of micro blades 362 integrally formed with the main body 361, and the main body 361 is fixedly connected to the central shaft 31.

In any of the above embodiments, preferably, as shown in fig. 3 and 4, the large power generation impeller 37 is composed of a plurality of large blades which are arranged on the ring gear 34 or the planetary gear set 33 at regular intervals.

In any of the above embodiments, preferably, as shown in fig. 2, the tower 10 includes a base 11 and a tower 12 mounted on the base 11, one side of the bottom of the tower 12 is hinged to the base 11, and a fixing ear 13 is disposed on the top of the tower 12, and an external pulling rope can fix or detach the tower 12 and the base 11 through the fixing ear 13 with a junction of the base 11 and the tower 12 as a fulcrum.

In this embodiment, can put down the aerogenerator pole through the haulage rope when aerogenerator breaks down, maintain aerogenerator, need not climb to the eminence and maintain, can effectually prevent the incident that the aerial work leads to like this, simple structure just has certain practical value.

It should be noted that, the wind speed sensor 41 adopts a conventional sensor with a wind speed sensing function in the prior art, the present invention only utilizes the corresponding function of the sensor, and is not the inventive idea of the present invention, and the working principle and structure thereof are not described again.

In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a wind power generation set, includes the pylon and installs generator cabin on the pylon, the holding can be with the electricity generation mechanism of wind energy conversion electrical energy in the generator cabin, its characterized in that, electricity generation mechanism includes the center pin, installs epaxial sun gear of center, with sun gear meshing's planetary gear set, with planetary gear set meshing's ring gear and with the generator that the center pin is connected, install miniature electricity generation impeller on the center pin, planetary gear set or install large-scale electricity generation impeller on the ring gear.

2. Wind power plant according to claim 1, characterized in that: the planetary gear set includes a carrier on which the large power generating blades are mounted, and a plurality of planetary gears rotatably mounted on the carrier, the planetary gears being engaged with the ring gear and the sun gear, respectively.

3. A wind power plant according to claim 2, characterized in that: the gear rack comprises a fixed frame and a rotating shaft integrally formed with the fixed frame, the planetary gear is installed on the fixed frame, the rotating shaft is connected with the generator, and the rotating shaft is sleeved on the central shaft.

4. A wind power plant according to any of claims 1-3, characterized in that: the sun gear cover is located on the center pin, still include wind speed sensor and with the joint piece that the wind speed sensor electricity is connected sun gear with form on the center pin with joint piece matched with draw-in groove, wind speed sensor can control joint piece card according to the wind speed size of sensing and go into in the draw-in groove, realize sun gear with the synchronous rotation of center pin.

5. Wind power plant according to claim 4, characterized in that: sunken first joint portion that forms to the axle center on the center pin, the inner wall of sun gear is sunken to the outer wall and is formed second joint portion, first joint portion with second joint portion forms the draw-in groove.

6. Wind power plant according to claim 4, characterized in that: the cross section of the clamping groove is circular or rectangular.

7. A wind power plant according to any of claims 1-3, characterized in that: the teeth on the planet gear, the sun gear and the gear ring are helical teeth.

8. A wind power plant according to any of claims 1-3, characterized in that: the micro power generation impeller comprises a main body and a plurality of micro blades integrally formed with the main body, and the main body is fixedly connected with the central shaft.

9. A wind power plant according to any of claims 1-3, characterized in that: the large power generation impeller is composed of a plurality of large blades, and the large blades are uniformly arranged on the gear ring or the planetary gear set at intervals.

10. A wind power plant according to any of claims 1-3, characterized in that: the tower comprises a base and a tower body arranged on the base, one side of the bottom of the tower body is hinged to the base, fixing lugs are arranged on the top of the base, and an external traction rope can be used for fixing or detaching the tower body and the base by taking the junction of the base and the tower body as a fulcrum through the fixing lugs.