CN108730126B

CN108730126B - Wind power generation system

Info

Publication number: CN108730126B
Application number: CN201810895190.6A
Authority: CN
Inventors: 尉立
Original assignee: Hebei Anzhao Energy Engineering Co ltd
Current assignee: Hebei Anzhao Energy Engineering Co ltd
Priority date: 2018-08-08
Filing date: 2018-08-08
Publication date: 2024-05-28
Anticipated expiration: 2038-08-08
Also published as: CN108730126A

Abstract

The present invention provides a wind power generation system, comprising: blade, hub axle, tower section of thick bamboo and power generation facility. The invention uses a dragging type belt transmission mode, the two power input units are connected with the sleeve shaft through the composite steel belt, the gear set and the generator are driven to work, continuous and stable output of electric energy is realized, and the invention has higher power generation efficiency and good environmental benefit.

Description

Wind power generation system

Technical Field

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

Background

Wind power generation is to convert kinetic energy of wind into electric energy. Because wind energy is a clean energy source, the wind power generation is very environment-friendly, and the generated electric energy is very huge, more and more countries pay more attention to wind power generation. At present, wind power generation mainly depends on a wind power generator, wherein the working principle of the wind power generator is that wind power is utilized to drive windmill blades to rotate, and then the rotating speed is increased through a gearbox, so that the generator is driven to generate electricity or a huge permanent magnet direct-drive generator is not used for generating electricity without increasing the speed, and an expensive full-power frequency converter is matched for generating electricity. However, the wind power generator based on the above working principle has low power generation efficiency and cannot continuously and stably output electric energy. Therefore, in view of the above problems, it is necessary to propose a further solution.

Disclosure of Invention

The invention aims to provide a wind power generation system which overcomes the defects in the prior art.

In order to solve the technical problems, the technical scheme of the invention is as follows:

A wind power generation system, comprising: the device comprises blades, a main frame, a hub shaft, a tower barrel, a power generation device and a box-type transformer;

The blades are arranged on the hub shaft and drive the hub shaft to rotate, the power generation device and the hub shaft are arranged in a high-altitude cabin, the hub shaft is supported by a circular bearing formed by a plurality of small bearings which are arranged in a circumferential array on the main frame, the power generation device converts power input by the blades into electric energy, the tower supports the cabin, and the box-type transformer is positioned on the ground and is arranged close to the tower;

The power generation device includes: the power input mechanism drives the generator to generate power through the transmission mechanism;

The power input mechanism comprises the following components: the first power input unit and the second power input unit are arranged on the hub shaft side by side;

Any one of the power input units includes: the device comprises a main disc, an L-shaped swing rod and a movable pulley which is in clutch with the main disc;

The main disc is sleeved on the hub shaft and synchronously moves along with the rotation of the hub shaft, a plurality of main protrusions are arranged on the side wall of the circumference of the main disc at equal intervals, and a plurality of push wheels corresponding to the positions and the numbers of the main protrusions are arranged on the side walls of the two sides of the main disc;

The moving sled includes: the main disc is provided with a main disc, a main disc is provided with a main rack, a pulley rack and a vehicle body, wherein the main disc is provided with a main lug, the main lug is used for pushing the main lug to slide in a reciprocating manner, the vehicle body is used for clutching with the main disc, one end of a sliding stroke of the movable pulley is an initial position, the other end of the sliding stroke of the movable pulley is a cutting position, the L-shaped swing rod is pivotally connected to a main frame of the main disc and is arranged towards the side wall of the main disc, when the movable pulley is positioned at the cutting position, the push wheel pushes the L-shaped swing rod to pivot, and the L-shaped swing rod pushes the movable pulley to cut out;

The transmission mechanism comprises: the transmission gear and the first transmission unit and the second transmission unit that asynchronous set up, arbitrary transmission unit includes: the clutch mechanism comprises a sleeve shaft, a clutch mechanism, a transmission gear and a reset mechanism;

The sleeve shaft is a hollow shaft and sleeved on a gear shaft at one side of the transmission gear, and the sleeve shaft has a fixed transmission ratio;

The clutch mechanism is arranged on a gear shaft at one side of the transmission gear and is positioned at one side of the sleeve shaft, two sets of clutch mechanisms are asynchronously arranged, the transmission gear moves synchronously along with the sleeve shaft through the engagement of the clutch mechanism, the sleeve shaft is in transmission connection with a moving pulley of a corresponding power input unit through a composite steel belt, and the reset mechanism comprises a weight rack which is engaged with a gear ring at one end of the sleeve shaft;

the transmission gear is meshed with a driven gear sleeved on the generator shaft;

the generator is a medium-voltage double-fed asynchronous generator provided with a frequency converter and a box-type transformer.

As an improvement of the wind power generation system, the L-shaped swing rod is provided with a long arm and a short arm which is vertically connected with one end of the long arm, and a pivot connection point of the L-shaped swing arm and the main frame is positioned on the long arm and is close to the short arm.

As an improvement of the wind power generation system, the vehicle body is matched with the pulley hanging frame through a key groove, and a spring is further arranged between the vehicle body and the pulley hanging frame.

As an improvement of the wind power generation system of the present invention, the clutch mechanism includes: the clutch comprises a locking claw block, a driving ferrule, a driving lantern ring and a clutch gear disc;

The clutch gear plate is positioned on the inner sides of the locking claw blocks and is in clutch with the locking claw blocks, the driving collar comprises a first driving collar and a second driving collar, the first driving collar and the second driving collar are sleeved on the outer ring of the driving collar and are respectively connected with the driving collar through threads, and the first driving collar and the second driving collar are opposite to the connecting threads of the driving collar in direction.

As an improvement of the wind power generation system, when the first driving sleeve ring is kept fixed, the driving sleeve ring drives the locking claw block to move centripetally and tightly to be meshed with the clutch gear along with the rotation of the transmission gear.

As an improvement of the wind power generation system, when the second driving collar is kept fixed, the driving collar drives the locking claw block to move outwards to be separated from the clutch gear along with the rotation of the driven disc.

As an improvement of the wind power generation system, one surface of any locking claw block, which is in clutch with the clutch gear disc, is provided with a fine first meshing tooth, and one surface of the clutch gear, which is in clutch with the locking claw block, is provided with a fine second meshing tooth.

As an improvement of the wind power generation system, the driving collar comprises a body and a lug which is integrally extended from the body and is matched with the locking claw block.

As an improvement of the wind power generation system, any locking claw block comprises a clutch part and a sliding part which is integrally formed or fixedly connected with the clutch part, wherein the clutch part is engaged with the clutch gear plate, and the sliding part slides along the key groove.

As an improvement of the wind power generation system of the present invention, the wind power generation system further includes a hydraulic tensioning mechanism, the hydraulic tensioning mechanism is located below the composite steel strip, and includes: the spring is connected with the fixed pulley bracket in a transmission way, and is driven to selectively abut against the fixed pulley and the composite steel belt.

As an improvement of the wind power generation system, when the movable pulley drives the gear shaft to rotate, the spring ejects out of the reset oil cylinder piston to tighten and retract the composite steel belt; and before the movable pulley is cut out, the spring is decompressed from the reset oil cylinder, the spring falls down from the piston of the reset oil cylinder to loosen the rope, and the movable pulley is unloaded.

As an improvement of the wind power generation system, the hub shaft is a hollow shaft which is arranged in a penetrating way, an impeller is arranged in the hub shaft, and the impeller is provided with another hydraulic power generation device which is arranged independently of the power generation device.

As an improvement of the wind power generation system of the present invention, the main disk circumferential outer ring starts from the main convex side, and the main disk is arranged in a step shape along the composite steel strip winding area.

As an improvement of the wind power generation system, the power input mechanism and the transmission mechanism are mutually matched in a plurality of groups.

the transmission mechanism comprises: the transmission gear and the first transmission unit and the second transmission unit that asynchronous set up, arbitrary transmission unit includes: the device comprises a sleeve shaft, a one-way bearing, a transmission gear and a reset mechanism;

The one-way bearings are arranged on a gear shaft at one side of the transmission gear and are positioned at one side of the sleeve shaft, two sets of one-way bearings are asynchronously arranged, the transmission gear moves synchronously along with the sleeve shaft through the one-way bearings, the sleeve shaft is in transmission connection with a moving pulley of a corresponding power input unit through a composite steel belt, and the reset mechanism comprises a weight rack which is meshed with a gear ring at one end of the sleeve shaft;

Compared with the prior art, the invention has the beneficial effects that: the invention uses a dragging type belt transmission mode, the two power input units are connected with the sleeve shaft through the composite steel belt, the gear set and the generator are driven to work, continuous and stable output of electric energy is realized, and the invention has higher power generation efficiency and good environmental benefit.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.

FIG. 1 is a schematic perspective view of a wind power generation system of the present invention;

FIG. 2 is an enlarged perspective view of the hub axle and the power generation device of FIG. 1;

FIG. 3 is an enlarged perspective view of the power generation device of FIG. 2;

FIG. 4 is an enlarged perspective view of the main disk of FIG. 2;

FIG. 5 is an enlarged perspective view of the transmission mechanism of FIG. 3;

Fig. 6 is an enlarged perspective view of the clutch mechanism of fig. 5.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1 to 6, the wind power generation system of the present invention includes: blade 1, main frame, hub axle 2, tower section of thick bamboo 3, power generation facility 4 and box transformer 5.

The blade 1 install in on the hub axle 2 to drive hub axle 2 and rotate, power generation facility 4 reaches hub axle 2 installs in the high altitude cabin, hub axle 2 is supported by a plurality of ring row bearings that are circumference array arrangement's on the main frame little bearing constitutes, power generation facility 4 turns into the electric energy with the power of blade 1 input, tower section of thick bamboo 3 is right the cabin supports, box transformer 5 is located subaerial, and near tower section of thick bamboo 3 setting.

The hub shaft 2 is a hollow shaft which is arranged in a through way, an impeller 6 is arranged in the hub shaft 2, and the impeller 6 is provided with another hydraulic power generation device 4 which is arranged independently of the power generation device 4. The impeller 6 positioned in the hub shaft 2 operates to generate electricity in a range from a wind speed lower than that of the main system operation to a wind speed of the main system operation.

The power generation device 4 includes: the power input mechanism 7, the transmission mechanism 8 and the generator 9, wherein the power input mechanism 7 drives the generator 9 to generate electricity through the transmission mechanism 8. Wherein, the power input mechanism 7 and the transmission mechanism 8 are mutually matched in a plurality of groups. Preferably, the power input mechanism 7 and the transmission mechanism 8 are a group.

The power input mechanism 7 includes an asynchronously arranged: the first power input unit 10 and the second power input unit 11 are arranged side by side on the same hub axle 2.

Any one of the power input units includes: a main disc 12, an L-shaped swing rod 13 and a movable pulley 14 which is clutched with the main disc 12.

The main disc 12 is sleeved on the hub shaft 2 and synchronously moves along with the rotation of the hub shaft 2. Thus, the hub shaft 2 transmits the kinetic energy of the rotation of the blades 1 to the main disk 12 to rotate. Wherein, a plurality of main protrusions 15 are arranged on the side wall of the circumference of the main disc 12 at equal intervals, and a plurality of push wheels corresponding to the positions and the number of the main protrusions 15 are arranged on the side walls of the two sides of the main disc 12.

In addition, the main disk 12 is arranged in a stepped manner along the composite steel belt winding area starting from the main boss 15 side on the circumferential outer ring of the main disk 12, and the speed difference caused by the overlapping of the composite steel belts in a plurality of turns when the main disk 12 is driven to rotate by the composite steel belt driving sleeve is corrected.

The traveling block 14 includes: a pulley hanger 16 pushed by the main protrusion 15 and a vehicle body 17 clutched with the main disc 12, wherein one end of the sliding stroke of the movable pulley 14 is an initial position, and the other end is a cut-out position.

In addition, the car body 17 is matched with the pulley hanging frame 16 through a key groove, and a spring is further arranged between the car body 17 and the pulley hanging frame 16. Through setting up the spring, when moving the coaster 14 resets, through the automobile body 17 with the spring in the coaster stores pylon 16 keyway can with the automobile body 17 pull up to with the main protruding 15 can the complex height, be convenient for main protruding 15 drives the automobile body 17 carries out synchronous motion.

Further, the L-shaped swing link 13 is pivotally connected to the main frame of the main disc 12 and is disposed towards the side wall of the main disc 12, when the moving carriage 14 is located at the cutting position, the push wheel pushes the L-shaped swing link 13 to pivot, and the L-shaped swing link 13 pushes the moving carriage 14 to cut.

In one embodiment, the L-shaped swing arm 13 has a long arm and a short arm vertically connected to one end of the long arm, and the pivot connection point of the L-shaped swing arm and the main frame is located on the long arm and is disposed close to the short arm.

Therefore, before the push wheel rotates to the cutting position along with the main disc 12, the push wheel pushes the short arm of the L-shaped swing rod 13 to drive the L-shaped swing rod 13 to rotate, and the end head of the long arm of the L-shaped swing rod 13 pushes down along with the rotation of the L-shaped swing rod 13 to drive the vehicle body 17 to separate from the main protrusion 15, and compresses a spring in a key groove of a suspension frame of the vehicle head and the movable pulley 14. When the car body 17 is reset after being separated from the main protrusion 15, the car body 17 is pulled up to the height matched with the main protrusion 15 by the spring in the key groove of the car body 17 and the moving pulley 14.

The transmission mechanism 8 includes: the transmission gear 18 and the first transmission unit 19 and the second transmission unit 20 which are arranged asynchronously are staggered asynchronously, so that the first transmission unit 19 and the second transmission unit 20 are in alternate reciprocating motion and matched with the corresponding clutch mechanism to realize continuous rotation driving of the shaft of the generator 9.

Specifically, any one of the transmission units includes: sleeve shaft 21, clutch mechanism 22 and reset mechanism 23. The transmission gear 18 is meshed with a driven gear sleeved on the shaft of the generator 9.

The sleeve shaft 21 is a hollow shaft, which is sleeved on a gear shaft at one side of the transmission gear 18, and the sleeve shaft 21 has a fixed transmission ratio.

The clutch mechanism 22 is installed on the gear shaft at one side of the transmission gear 18 and is positioned at one side of the sleeve shaft 21, two sets of clutch mechanisms 22 are asynchronously arranged, and the transmission gear 18 moves synchronously along with the sleeve shaft 21 through the engagement of the clutch mechanisms 22. Meanwhile, the sleeve shaft 21 is in transmission connection with the moving pulley 14 of the corresponding power input unit through a composite steel belt. Therefore, the main disc 12 can pull the composite steel belt through the moving pulley 14 and further drive the gear shaft of the transmission gear 18 to rotate so as to realize power output.

The reset mechanism 23 is used for resetting the moving pulley 14, and comprises a weight rack, and the weight rack is meshed with a gear ring at one end of the sleeve shaft 21 and performs lifting movement. Therefore, the weight rack rises to store energy along with the gear ring transmission, and falls under the action of gravity when the clutch mechanism 22 is in a disengaged state, the sleeve shaft 21 is driven to rotate reversely through the cooperation of the rack, and the composite steel belt pulls the movable pulley 14 to reset.

The clutch mechanism 22 may be a locking dog hugging clutch mechanism 22. Alternatively, clutch mechanism 22 may be replaced with a one-way bearing, wherein the one-way bearing is an existing bearing.

When the clutch mechanism 22 is held tightly by the locking claw, the clutch mechanism 22 includes: comprising the following steps: a locking claw 24, a driving collar 25, a driving collar 26 and a clutch gear plate 27. Preferably, the driving collar 25, the driving collar 26 and the clutch gear plate 27 are concentrically arranged in a mutual positional relationship.

The locking claw pieces 24 are a plurality of, the plurality of locking claw pieces 24 are distributed on the inner side of the driving ferrule 25 in a mutually abutting manner and are tightly attached to the driving ferrule 25 through a wedge-shaped surface on the driving ferrule, and the attaching side of the locking claw pieces 24 and the driving ferrule 25 is in sliding connection through a dovetail groove.

The clutch gear plate 27 is sleeved on a gear shaft of the transmission gear 18, the clutch gear plate 27 is positioned on the inner sides of the locking claw blocks 24 and is in clutch with the locking claw blocks 24, and the driving collar 25 and the locking claw blocks 24 are sleeved in a side key groove of the transmission gear 18 through side splines.

In order to realize the clutch action between the locking claw blocks 24 and the clutch gear plate 27, a fine first meshing tooth is arranged on the surface of any locking claw block 24 which is in clutch with the clutch gear plate 27, and a fine second meshing tooth is arranged on the surface of the clutch gear which is in clutch with the locking claw block 24. Thus, when the locking claw pieces 24 are meshed with the clutch gear plate 27, the locking claw pieces can be driven to rotate; when separated, the application of force may be stopped.

The driving collar 26 is configured to drive the driving collar 25 to move, specifically, the driving collar 26 includes a first driving collar and a second driving collar, the first driving collar and the second driving collar are sleeved on an outer ring of the driving collar 25 and are respectively connected with the driving collar 25 through threads, and directions of connecting threads of the first driving collar and the second driving collar are opposite to directions of connecting threads of the driving collar 25. So configured, the connecting threads between the first and second drive collars and the drive collar 25 also have a self-locking function.

In one embodiment, the driving collar 25 includes a body and a projection integrally extending from the body that mates with the locking jaw 24. Correspondingly, any one of the locking claw pieces 24 includes a clutch portion and a sliding portion integrally formed with or fixedly connected to the clutch portion, the clutch portion is engaged with the clutch gear plate 27, and the sliding portion slides along the key groove.

When the first driving collar is kept fixed, the driving collar 25 drives the locking claw block 24 to centripetally move to tightly engage with the clutch gear along with the rotation of the transmission gear 18. When the second driving collar is kept stationary, the driving collar 25 drives the locking claw block 24 to move outwards to be separated from the clutch gear along with the rotation of the driven disc.

Specifically, when the clutch gear plate 27 is matched with the gear shaft of the transmission gear 18, the first driving collar is fixed under external control, and the driving collar 25 is driven to rotate along with the rotation of the gear shaft, and the driving collar 25 moves forward axially through a threaded relationship. The driving collar 25 drives the locking claw block 24 to centripetally move to tightly hold the clutch gear disc 27 through a wedge block structure. After the clutch mechanism 22 is completely held tightly, the first driving collar is separated from the outside control, and rotates synchronously with the transmission gear 18.

When the clutch gear plate 27 is separated from the gear shaft of the transmission gear 18, the second driving collar is fixed under external control, and the driving collar 25 is driven to rotate along with the rotation of the driven shaft, and the driving collar 25 moves axially in the opposite direction through the threaded relationship. The driving collar 25 drives the locking claw block 24 to move outwards through a wedge block structure to be separated from the clutch gear. The second drive collar is decoupled from external control after complete disengagement and rotates in synchronism with the clutch mechanism 22 and the transfer gear 18.

In addition, in order to facilitate the clutch between the movable pulley 14 and the main disk 12, the wind power generation system further comprises a hydraulic tensioning mechanism 28, wherein the hydraulic tensioning mechanism 28 is located below the composite steel belt, and the wind power generation system comprises: spring self-resetting cylinder 29, fixed pulley 30 and fixed pulley bracket 31. The fixed pulley 30 is mounted on the fixed pulley bracket 31, and the spring self-resetting oil cylinder 29 is in transmission connection with the fixed pulley bracket 31 and drives the fixed pulley 30 to selectively abut against the composite steel belt.

Therefore, when the moving pulley 14 drives the gear shaft to rotate, the spring ejects out of the piston of the resetting oil cylinder 29 to tighten and retract the composite steel belt; before the movable pulley 14 is cut out, the spring is decompressed from the reset cylinder 29, and the spring falls down from the piston of the reset cylinder 29 to loosen the rope, so as to assist the movable pulley 14 to unload.

The generator 9 is a high-voltage squirrel cage asynchronous generator. Since stable output can be achieved by providing the sleeve shaft 21, the above-described high-voltage squirrel-cage asynchronous generator does not need to be equipped with a frequency converter and a box-type transformer 5.

In summary, in the drag type belt transmission mode, the two power input units are connected with the sleeve shaft 21 through the composite steel belt to drive the gear set and the generator 9 to work, so that continuous and stable output of electric energy is realized, and the power generation efficiency is high and the environmental benefit is good.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. A wind power generation system, characterized in that the wind power generation system comprises: the device comprises blades, a main frame, a hub shaft, a tower barrel, a power generation device and a box-type transformer;

2. The wind power generation system of claim 1, wherein the L-shaped swing link has a long arm and a short arm connected perpendicularly to one end of the long arm, and wherein the pivotal connection point of the L-shaped swing link to the main frame is located on the long arm and is disposed adjacent to the short arm.

3. The wind power generation system according to claim 1, wherein the vehicle body and the trolley hanger are matched through a key slot, and a spring is further arranged between the vehicle body and the trolley hanger.

4. The wind power generation system of claim 1, wherein the clutch mechanism comprises: the clutch comprises a locking claw block, a driving ferrule, a driving lantern ring and a clutch gear disc;

5. The wind power generation system of claim 4, wherein the drive collar drives the locking dog into centripetal movement into hugging engagement with the clutch gear disk as the drive gear rotates while the first drive collar remains stationary.

6. The wind power generation system of claim 4, wherein the drive collar drives the locking dog out of engagement with the clutch gear disc as the drive gear rotates while the second drive collar remains stationary.

7. The wind power generation system according to claim 4, wherein a fine first engaging tooth is provided on a side of any one of the locking claw pieces which is engaged with the engaging gear plate, and a fine second engaging tooth is provided on a side of the engaging gear plate which is engaged with the locking claw piece.

8. The wind power generation system of claim 4, wherein the drive collar includes a body and a tab integrally extending from the body that mates with the locking detent.

9. The wind power generation system according to claim 4, wherein any one of the locking claw blocks includes a clutch portion and a sliding portion integrally formed with or fixedly connected to the clutch portion, the clutch portion is engaged with the clutch gear plate, and the sliding portion slides along the key groove.

10. The wind power generation system of claim 1, further comprising a hydraulic tensioning mechanism located below the composite steel strip, comprising: the spring is connected with the fixed pulley bracket in a transmission way, and is driven to selectively abut against the fixed pulley and the composite steel belt.

11. The wind power generation system of claim 10, wherein when the moving sled rotates the gear shaft, the spring ejects the composite steel strip from the reset cylinder piston to tighten and retract the rope; and before the movable pulley is cut out, the spring is decompressed from the reset oil cylinder, the spring falls down from the piston of the reset oil cylinder to loosen the rope, and the movable pulley is unloaded.

12. The wind power generation system of claim 1, wherein the hub axle is a hollow axle disposed therethrough, an impeller being mounted in the hub axle, the impeller having another hydraulic power generation device disposed independently of the power generation device.

13. The wind power generation system of claim 1, wherein the main disk circumferential outer ring begins against the main convex side, the main disk being arranged in a stepped manner along the composite steel strip winding area.

14. The wind power generation system of claim 1, wherein the power input mechanism and the transmission mechanism are in a plurality of sets that cooperate with each other.

15. A wind power generation system, characterized in that the wind power generation system comprises: the device comprises blades, a main frame, a hub shaft, a tower barrel, a power generation device and a box-type transformer;