CN111637006A - Push-out type vertical axis wind driven generator with adjustable radius and control method - Google Patents
Push-out type vertical axis wind driven generator with adjustable radius and control method Download PDFInfo
- Publication number
- CN111637006A CN111637006A CN202010515368.7A CN202010515368A CN111637006A CN 111637006 A CN111637006 A CN 111637006A CN 202010515368 A CN202010515368 A CN 202010515368A CN 111637006 A CN111637006 A CN 111637006A
- Authority
- CN
- China
- Prior art keywords
- support rod
- blades
- radius
- parallel
- upright post
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims abstract description 48
- 238000013213 extrapolation Methods 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims description 17
- 230000008093 supporting effect Effects 0.000 claims description 14
- 238000010248 power generation Methods 0.000 claims description 13
- 230000005484 gravity Effects 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 238000011217 control strategy Methods 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 210000001624 hip Anatomy 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
- F03D3/005—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor the axis being vertical
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
- F03D3/06—Rotors
- F03D3/062—Rotors characterised by their construction elements
- F03D3/064—Fixing wind engaging parts to rest of rotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/06—Controlling wind motors the wind motors having rotation axis substantially perpendicular to the air flow entering the rotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The invention provides an extrapolation type radius-adjustable vertical axis wind turbine and a control method thereof, wherein the device comprises a stand column assembly, a blade assembly and a generator assembly, wherein the blade assembly can extend out along with a telescopic mechanism to drive a lower turntable and the blade assembly to extend and expand until the telescopic mechanism extends out to the maximum value, so that the included angle theta between a lower support rod and a stand column is smaller than a set value of 90 degrees; the lower rotating disc and the blade assembly are driven to be folded along with the retraction of the telescopic mechanism; when the telescoping mechanism retracts to the lower limit point, the blade assembly retracts and folds around the upright post. Compared with the prior art, the device is suitable for maximum power control of all wind speed ranges from breeze to rated wind speed. When the wind speed exceeds the safe wind speed or the wind turbine is normally stopped, the wind energy can not be absorbed any more by retracting the blades and reducing the height of the blades; when meeting the fan trouble, through fold condition, combine electromagnetic brake can realize the braking fast. When the portable multifunctional trolley needs to be carried, the portable function is realized through the folded state.
Description
Technical Field
The invention relates to a wind power generation and control system, in particular to a foldable structure of a vertical axis wind power generator and a swept area control and storage control method.
Background
In recent years, wind power generation has been widely used, but the wind power generator is not suitable for mobile use because of its large size. Remote applications such as farming and pasturing areas, frontier sentry cards, geological prospecting, archaeology, etc. not only require a large supply of electricity, but often also movement. Wind power generation systems that are easily portable and portable have received attention for a number of applications.
Chinese patent CN103423088A discloses a vehicle-mounted folding wind-driven generator which can be conveniently disassembled and assembled, but the invention is novel in that the retractable support rod is fixed by a positioning screw, and although the structure is simple, the wind-driven generator is required to be manually folded by a user, which is time-consuming and labor-consuming, and the wind-driven generator can only be lifted and lowered, and the blades cannot be folded, so that the wind-driven generator is very inconvenient to carry.
Chinese patent CN204559466U discloses a field portable power generation device, this aerogenerator's support and fan blade adopt auto-lock hinge connection, can be at the during operation with the steady state who keeps the blade when placing, but this utility model can not automatic control aerogenerator blade folding and expand, need the manual expansion of user, because the fan tower pole is than higher, consequently is difficult to manually operation. But also fails to operate if the fan is rotating.
Chinese patent CN110242506A discloses a folding vertical axis wind turbine, which uses a motor to control the axial movement of a sliding sleeve of a blade support arm, thereby realizing the folding of a fan blade, but the invention needs axial sliding and circumferential rotation, has high requirements on the finish of an upright post, and in addition, the gap between the sliding sleeve and the upright post can cause vibration. The acting force arms of the support arm and the pull rod on the second connecting rod are small, so that large pushing force is needed; the longer sliding range of the actuator is required if the moment arm is to be increased, increasing the cost of the inventive mechanism. In addition, the mechanism of the invention is too complex, can not run for a long time when exposed to the environment with large sand wind, and has influenced reliability and service life.
Chinese patent CN104481810B discloses a self-extending vertical axis wind turbine, which has a complex structure, large moment of inertia, difficult start in breeze, and unfavorable to power generation in breeze, because the wind turbine and all mechanisms rotate above the motor; the adjustment of the invention is completed by a pure mechanical structure, and the required control requirements cannot be completed, for example, if the machine cannot be stopped in no-load state, the machine is controlled by only a flyweight, and the rotating speed and the power cannot be flexibly adjusted according to specific requirements; in addition, the device does not fulfill the portable and foldable requirement.
Chinese patent CN109630350A discloses a foldable phi-shaped vertical axis wind turbine, which after being folded, becomes wider in transverse dimension, occupies more transverse space, and is therefore not suitable for portability.
In summary, all the foldable vertical axis wind turbines in the prior art cannot meet the requirements of folding portability and power generation control for automatically and continuously adjusting the swept area, and have more movable components, and cannot meet the requirements in the aspects of reliability, safety, economy and the like. In addition, the existing vertical axis fan is difficult to install a mechanical brake system, so that the fan is difficult to realize rapid parking when exceeding safe wind speed or the fan fails, a large amount of heat is generated by electromagnetic braking and consumed in a generator and a controller, and the service life of the fan and the controller is influenced. The biggest problem in the prior art is that although the radius of the blade can be changed, most of the blades cannot be changed at the same time.
Disclosure of Invention
The invention provides an extrapolation radius adjustable vertical axis wind turbine and a control method aiming at the defects of the prior art, compared with the prior art, the blade can be unfolded to the maximum radius to start breeze, and the sweep radius and the area of the blade and the height of the blade can be adjusted through automatic control, so that the rotating speed of a fan and the power of absorbed wind energy are adjusted, and the maximum power control in all wind speed ranges from breeze to rated wind speed is adapted. When the wind speed exceeds the safe wind speed or the wind turbine is normally stopped, the wind energy can not be absorbed any more by retracting the blades and reducing the height of the blades; when meeting the fan trouble, through fold condition, combine electromagnetic brake can realize the braking fast. When needs transport, through fold condition, make the blade fall to minimum state, the blade subassembly is folded around the stand to realize portable function. More importantly, all the blade supporting rods can bear the stress of the blades, so that the strength, reliability, safety and service life of the folding device are effectively improved.
The technical scheme adopted by the invention is as follows:
in order to achieve the purpose, the extrapolation type vertical axis wind driven generator with the adjustable radius comprises a stand column assembly, a blade assembly and a generator assembly; the mounting flange at the top end of the upright post assembly is connected with the stator flange at the lower end of the generator assembly; the upper support rod, the parallel support rod and the lower support rod of the blade assembly are respectively connected with an upper support rod disc and a parallel support rod disc of the generator assembly and a lower support rod disc arranged on the upright post assembly; the lower turntable and the blade assembly are driven to extend and expand along with the extension of the telescopic mechanism until the telescopic mechanism extends to the maximum value, so that the included angle theta between the lower support rod and the upright post is smaller than a set value of 90 degrees; the lower rotating disc and the blade assembly are driven to be folded along with the retraction of the telescopic mechanism; when the telescoping mechanism retracts to the lower limit point, the blade assembly retracts and folds around the upright post.
The upright post assembly comprises an upright post, a telescopic mechanism, a lower rotary table and a mounting flange; the telescopic rod in the telescopic mechanism is connected with the sliding sleeve of the lower turntable and can jack and retract the lower turntable; the mounting flange is arranged at the top end of the upright post, the lower turntable is sleeved on the upright post and can slide up and down under the driving of the telescopic rod, and the telescopic mechanism is fixed on the side face of the upright post.
The blade assembly comprises blades, an upper support, parallel supports, a lower support, an upper support rod, parallel support rods and a lower support rod; the blade assembly is arranged on the column assembly and the generator assembly, so that the blades are parallel to the columns and form a parallel four-bar linkage structure together with the upper supporting rods and the parallel supporting rods; the upper support and the parallel support are arranged on the blade, and the lower support is connected with the upper support rod, the parallel support rod and the lower support rod respectively and can rotate freely.
The generator assembly comprises a stator flange, a stator shaft, a generator bearing, an outer rotor, a parallel strut disc and an upper strut disc; the generator adopts an outer rotor structure, the lower end of a stator shaft is provided with a stator flange, an upper support rod disc is arranged at the top end of the outer rotor, a parallel support rod disc is arranged at the lower end of the outer rotor, and the outer rotor is matched with the stator shaft through a generator bearing; the angle direction of the parallel strut disc is consistent with that of the upper strut disc.
The lower turntable comprises a fixed sleeve, a turntable bearing, a rotating sleeve and a lower support rod disc; the fixed sleeve is fixed outside the upright post and can be adjusted in height up and down, the rotating sleeve is mounted outside the fixed sleeve through a disc bearing and can freely rotate, and the lower support rod disc is mounted on the rotating sleeve and can freely rotate along with the rotating sleeve.
The fan support rod fixing device is characterized in that round holes are formed in the middles of the upper parallel support rod disc and the lower support rod disc, support rod seats used for installing fan support rods are evenly and symmetrically distributed on the outer edges of the upper parallel support rod disc and the lower support rod disc, and the support rod seats used for installing the fan support rods are evenly and symmetrically distributed on the outer edges of the upper support rod disc.
The telescopic mechanism drives the lower turntable to slide up and down along the upright, and simultaneously the lower support rod disk 1034 mounted on the lower turntable and the connected lower support rod can rotate around the upright and provide a supporting force for offsetting the influence of gravity for the blades.
The lower support rods are directly connected with the blades, and the lower support rods, the upper support rods and the parallel support rods are used for always keeping the shape of an isosceles trapezoid four-bar mechanism and enabling the blades and the upright posts to be always kept parallel.
The blades in the blade assembly are lifted when unfolded to increase the height, and fall when folded and reduced; so as to be able to obtain a greater absorption of the wind energy in the presence of breezes.
The control method of the foldable vertical axis wind turbine is characterized in that the implementation steps of the system state control strategy are as follows:
step A-1: controlling a telescopic rod of the telescopic mechanism to extend out to drive the lower turntable to rise, enabling the blade assembly to rise in height and expand to increase the rotating radius, enabling an included angle theta between the lower supporting rod and the upright post to be not more than 90 degrees, enabling the blades to be in a parallel state with the upright post, and starting the system if wind exists;
step A-2: if the wind speed is greater than a set value, or the output power of the fan is required to be reduced, or the rotating speed of the fan is required to be reduced, the telescopic rod of the telescopic mechanism is controlled to retract, the lower rotary disc is retracted downwards, all the blades are retracted downwards under the action of gravity, the included angle theta between the lower support rod and the upright post is gradually reduced, the radius of the blades from the upright post is further reduced, and meanwhile the height of the blades is reduced;
step A-3: if breeze power generation is needed, or the output power of the fan is needed to be improved, or the rotating speed of the fan is needed to be increased, the telescopic rod of the telescopic mechanism is controlled to extend out to drive the lower turntable to ascend, all the blades are supported by the lower support rod and expand upwards and outwards under the action of centrifugal force, so that the blade assembly is unfolded, and in the control process, the included angle between the lower support rod and the upright post needs to be kept to reach a set value not more than 85 degrees, so that the radius of the blades from the upright post is increased, and the height of the;
step A-4: if the fan breaks down, perhaps when needing the fan to shut down, control telescopic link withdrawal of telescopic machanism and retrieve the lower carousel downwards, all blades are packed up downwards under the action of gravity, contained angle theta between lower branch and the stand reduces gradually, further reduce the radius of blade apart from the stand, make the high decline of blade simultaneously, fold the stand all around and stretch out and pack up completely until the blade, make the blade no longer absorb the wind energy, the electromagnetic braking of the generator of the re-control, make the fan brake fast.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages and effects:
the invention has the advantages that the blades can be completely unfolded and also can be completely folded and attached around the upright post, the volume is minimum, and the movement is convenient; deployment and folding stowing may be accomplished continuously by an automated control system.
One effect of the present invention is that the blades can be raised in height when deployed and lowered in height when stowed, which is beneficial to improving the wind energy absorption efficiency of the system and can improve the applicable wind speed range.
The invention has the advantages that the wind driven generator only needs to be fixed by the rolling bearing, the structure is simple, and the system cost is saved.
The invention has the advantages that if the fan fails or needs to be stopped, the fan is folded to stop absorbing energy, the fan can be quickly braked and stopped by utilizing the electromagnetic braking of the generator, and the generator and the controller generate little heat in the stopping mode, thereby being beneficial to prolonging the service life.
One effect of the invention is that the invention does not have special radius adjusting struts, all the blade struts can bear the stress of the blades, and the strength, reliability, safety and service life of the folding device are effectively improved.
Drawings
FIG. 1 is a schematic view of an extended state of an adjustable-radius vertical axis wind turbine according to the present invention;
FIG. 2 is a schematic view of an external radius adjustable vertical axis wind turbine in a collapsed state according to the present invention;
FIG. 3 is a schematic view of a mast assembly for an adjustable-radius vertical axis wind turbine according to the present invention;
FIG. 4 is a schematic view of a blade assembly of an adjustable-radius vertical axis wind turbine according to the present invention;
FIG. 5 is a schematic view of a generator assembly of the present invention for an external radius adjustable vertical axis wind turbine;
FIG. 6 is a schematic view of a first blade radius adjustment process and a folding process of the extrapolation radius adjustable vertical axis wind turbine according to the present invention;
FIG. 7 is a schematic view of a second blade radius adjustment process and a folding process of the extrapolation radius adjustable vertical axis wind turbine of the present invention;
FIG. 8 is a third schematic view illustrating a blade radius adjustment process and a folding process of the extrapolation radius adjustable vertical axis wind turbine according to the present invention;
FIG. 9 is a lower turntable and cross-sectional view of an external radius adjustable vertical axis wind turbine according to the present invention;
FIG. 10 is a detail view of an upper mast plate of an external radius adjustable vertical axis wind turbine according to the present invention;
FIG. 11 is a drawing of the components of the parallel strut discs and lower strut discs of the external radius adjustable vertical axis wind turbine of the present invention;
FIG. 12 is a graph of blade radius adjustment versus strut angle for an extrapolated radius adjustable vertical axis wind turbine according to the present invention.
In the drawings, each reference numeral represents a component:
1. column assembly, 2, blade assembly, 3, generator assembly, 101, column, 102, telescoping mechanism, 103, lower rotor, 104, mounting flange, 201, blade, 202, upper bearing, 203, parallel mount, 204, lower bearing, 205, upper strut, 206, parallel strut, 207, lower strut, 301, stator flange, 302, stator shaft, 303, generator bearing, 304, outer rotor, 305, parallel strut disk, 306, upper strut disk, 1021, telescoping rod, 1031, sliding sleeve, 1032, disk bearing, 1033, rotating sleeve, 1034, lower strut disk, 1035, telescoping rod seat, 3051, strut seat, 3061, upper strut seat.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic view of an extended state of an external push-out radius-adjustable vertical axis wind turbine according to the present invention, which includes a column assembly 1, a blade assembly 2, and a generator assembly 3.
Fig. 3 is a schematic view of a vertical column assembly of an external radius adjustable vertical axis wind turbine according to the present invention, wherein the vertical column assembly 1 comprises a vertical column 101, a telescoping mechanism 102, a lower turntable 103, and a mounting flange 104.
The control function of the telescopic mechanism 102 is realized by adopting an electric push rod in the embodiment.
In one embodiment, the telescoping mechanism 102 may be implemented by a hydraulic cylinder, a pneumatic cylinder, a worm gear, a ball screw, or other mechanical device.
A mounting flange 104 is provided at the top end of the mast 101 for mounting the generator assembly 3. The telescopic rod 1021 of the telescopic mechanism 102 is connected to the telescopic rod seat 1035 on the lower rotary table 103, and can raise and retract the lower rotary table 103. The lower rotary disc 103 is sleeved on the upright post 101 and can slide up and down along the upright post 101 to provide a rotary fulcrum for the blade assembly 2.
Fig. 4 is a schematic view of a blade assembly of an external radius adjustable vertical axis wind turbine according to the present invention, wherein the blade assembly 2 comprises a blade 201, an upper support 202, a parallel support 203, a lower support 204, an upper support 205, parallel struts 206, and a lower support 207.
In this embodiment, the blade 201 is made of a truss structure made of composite materials, girders and ribs are added in the middle for reinforcement, and an upper support 202, a parallel support 203 and a lower support 204 are installed at proper positions of the girders.
In one embodiment, the blade 201 may be formed by riveting an aluminum alloy profile or a sheet metal part of an aluminum alloy.
Fig. 12 is a diagram of blade radius adjustment and strut angle relationship of the external push-out radius adjustable vertical axis wind turbine according to the present invention, and the blade assembly 2 is installed on the column assembly 1 and the generator assembly 3, so that the blade 201 is parallel to the vertical column 101, and forms a parallel four-bar linkage structure together with the upper strut 205 and the parallel strut 206. Lower strut 207 may form an isosceles trapezoid four bar linkage with upper strut 205 and parallel strut 206. Because the isosceles trapezoid four-bar linkage mechanism is a stable structure, the angle theta between the two waists and the bottom edge of the quadrangle can be controlled to adjust the height of the quadrangle, so that the rotating radius and the swept area of the blade 201 and the height of the blade 201 are adjusted, and the wind energy absorption efficiency of the fan is adjusted.
In the unfolded state of the pushout radius-adjustable vertical axis wind turbine, as shown in fig. 1, the blades 201 of the fan are parallel to the vertical column 101, the radius from the vertical column 101 is maximized, and the blades are raised to the maximum, so that the fan can generate the maximum torque to drive the generator to generate electricity. Therefore, the wind power generation control device is suitable for starting of the wind power generator and wind power collection and power generation control under the condition of breeze. At this time, the angle θ between the lower support rod 207 and the column 101 is not more than 90 °, and further, in order for the lower support rod 207 to provide an upward force to the blade assembly 2 so as to balance the gravity of the blade assembly 2, it is preferable to set the angle θ to about 75 ° to 85 °, see fig. 12.
However, in this state, since the sweep radius of the blade 201 is large, it is not suitable for portability and movement, and especially when the blade is installed in different places in the field, the transportation is very inconvenient, the fan is easily damaged, and a large transportation space is occupied.
Fig. 2 is a folding state diagram of the external push type vertical axis wind turbine with adjustable radius according to the present invention, which is convenient for transportation, and is made into a movable wind turbine system, the blade assembly 2 can be automatically folded around the vertical column 101, so as to reduce the volume, and the protection of the blade 201 during transportation and movement is convenient. The folded state shown in fig. 2 is characterized in that the telescopic rod 1021 of the telescopic mechanism 102 is fully retracted. The wind driven generator blade 201 is mainly used during storage, transfer and transportation of the wind driven generator blade, and the height and the transverse dimension of the whole system can reach the lowest state; and secondly for the shutdown state.
When the push-out vertical axis wind turbine with the adjustable radius is folded, the telescopic rod 1021 of the telescopic mechanism 102 drives the lower turntable 103 to slide downwards along the upright post 101, and drives the lower support rod 207 to pull the blade 201 around the upright post 101, and the process is from fig. 8 to fig. 7, and finally reaches the folded state of fig. 6. Throughout the folding process, the blade 201 and the upright post assembly 1 are always kept parallel because the upper strut 205 and the parallel strut 206 form a parallelogram four-bar linkage structure with the upright post assembly 1 and the blade 201.
After the blade assembly 2 is folded in place, the upright post assembly 1 can be placed in a horizontal state, and the movement and the transportation are more convenient.
In addition, when the fan is in the power generation state, as shown in fig. 8, if the fan fails or needs to be stopped, the telescopic rod 1021 of the telescopic mechanism 102 drives the lower turntable 103 to slide downwards along the upright post 101, and drives the lower support rod 207 to pull the blade 201 around the upright post 101, and reaches the folded state shown in fig. 6. Blade subassembly 2 is packed up and is folded all around to stand 101 completely, makes blade 201 no longer absorb wind energy, controls generator electromagnetic braking again, makes the fan brake fast. According to the parking mode, the fan does not absorb wind energy any more, the rotational inertia of the folded fan is reduced greatly due to the fact that the radius of the folded fan is reduced, when the generator is subjected to electromagnetic braking, the fan can be braked and parked only by outputting smaller torque, energy consumed by the generator and the controller is smaller, heat is very small, and the service life is prolonged.
FIG. 5 is a schematic diagram of a generator assembly of an external radius adjustable vertical axis wind turbine according to the present invention, wherein the generator employs an external rotor. The generator assembly 3 includes a stator flange 301, a stator shaft 302, a generator bearing 303, an outer rotor 304, a parallel strut disc 305, and an upper strut disc 306.
The generator adopts an outer rotor structure, the lower end of a stator shaft 302 is provided with a stator flange 301, an upper support rod disc 306 is arranged at the top end of an outer rotor 304, a parallel support rod disc 305 is arranged at the lower end of the outer rotor 304, and the outer rotor 304 is matched with the stator shaft 302 through a generator bearing 303. The parallel strut plate 305 has the same outer dimensions as the upper strut plate 306, and the upper strut seat 3061 and the strut seat 3051 are mounted at the same angular direction and on the same vertical line.
In one embodiment, the generator is an internal rotor configuration, with the stator housing mounted to a mounting flange 104 at the top of a lifting column 105, with the rotor output shaft facing vertically upward. And then an adapter plate which is the same as the outer rotor 304 is manufactured on the output shaft of the rotor. An upper strut plate 306 is mounted above the adapter plate and a parallel strut plate 305 is mounted below the adapter plate and is in complete parallel alignment with the upper strut plate 306.
Fig. 9 is a sectional view of the lower dial 103 of the external radius adjustable vertical axis wind turbine, wherein the lower dial 103 includes a sliding sleeve 1031, a dial bearing 1032, a rotating sleeve 1033, and a lower strut dial 1034.
In this embodiment, the parallel strut discs 305 and the lower strut discs 1034 have the same structure.
In one embodiment, the upper strut disc 306 is substantially the same size as the lower strut disc 1034.
In this embodiment, the sliding sleeve 1031 is directly sleeved on the upright 101 and can slide up and down along the upright 101. A disk bearing 1032 is attached to the outside of the slide cover 1031, and a rotating cover 1033 is attached to the disk bearing 1032. The runner 1033 is freely rotatable around the sliding sleeve 1031 and the column 101. A lower strut plate 1034 is mounted above the sleeve 1033.
FIG. 10 is a drawing showing the details of an upper leg plate of the external radius adjustable vertical axis wind turbine of the present invention, and FIG. 11 is a drawing showing the details of a parallel leg plate and a lower leg plate of the external radius adjustable vertical axis wind turbine of the present invention. In this embodiment, in order to make the system components interchangeable, the upper strut disc 306 component diagram is designed to have the same overall dimensions as the parallel strut disc 305 and the lower strut disc 1034 component diagram, and the connecting line of the points where the upper strut disc 306, the parallel strut disc 305 and the lower strut disc 1034 are connected with the blade assembly 2 (i.e. the upper strut mount 3061 and the strut mount 3051) is ensured to be perpendicular to the horizontal plane. The upper support rod disc 306, the parallel support rod disc 305 and the lower support rod disc 1034 are respectively provided with support rod seats (i.e. an upper support rod seat 3061 and a support rod seat 3051) which are symmetrically and uniformly distributed and are respectively used for connecting the upper support rod 206, the parallel support rod 206 and the lower support rod 207.
FIG. 6 is a first schematic diagram of a blade radius adjusting process and a folding process of the vertical axis wind turbine with adjustable extrapolation radius according to the present invention, FIG. 7 is a second schematic diagram of a blade radius adjusting process and a folding process of the vertical axis wind turbine with adjustable extrapolation radius according to the present invention, and FIG. 8 is a third schematic diagram of a blade radius adjusting process and a folding process of the vertical axis wind turbine with adjustable extrapolation radius according to the present invention.
In one embodiment, the wind turbine is in the folded state of FIG. 6 prior to startup. At this time, the lower turntable 103 is contracted to the lowest point by the telescopic mechanism 102, so that the upper support rod 206, the parallel support rod 206 and the lower support rod 207 are fully opened, and the blades 201 are tightly attached to the periphery of the upright 101. The blades 201 cannot absorb wind energy and thus do not rotate, and thus cannot generate electricity.
In one embodiment, telescoping mechanism 102 are extended upward so that the upper struts 206, the parallel struts 206 and the lower struts 207 form an equilateral trapezoid structure, see fig. 7 and 8, at which time the radius of rotation R of the blade 201FIs equal to
RF＝Lsinθ+R
Where L is the length of lower strut 207, θ is the angle between lower strut 207 and upright 101, see fig. 12, and R is the radius of lower strut plate 1034.
By adjusting the telescopic distance of the telescopic mechanism 102, the angle theta can be adjusted, thereby adjusting the rotating radius R of the blade 201F. By adjusting the rotating radius and height of the blades 201, the power of the wind energy absorbed by the fan can be adjusted, so that the maximum power generation can be obtained in a wider wind speed range.
In one embodiment, the angle θ between lower strut 207 and upright 101 varies from 0 to 90 during normal operation. In this range, the lower struts 207 provide upward supporting force to the blade 201.
In one embodiment, the control method for folding and unfolding the wind driven generator is divided into 5 parts, and the implementation steps are as follows:
step 1: erecting the extrapolated radius adjustable vertical axis wind turbine at a selected location confirms that the generator assembly 3 and the telescoping mechanism 102 can operate properly and that the blades 201 will not touch objects in the surrounding environment after the wind turbine is deployed, avoiding damage to the blades 201.
Step 2: the telescopic rod 1021 of the telescopic mechanism 102 is controlled to extend, so that the blade assembly 2 is unfolded, the included angle between the lower support rod 207 and the upright post 101 is not more than 85 degrees, meanwhile, the blade 201 is in a parallel state with the upright post 101, and if wind exists, the system starts to start.
And step 3: if the wind speed is greater than the set value, or the output power of the fan needs to be reduced, or the rotating speed of the fan needs to be reduced, the telescopic rod 1021 of the telescopic mechanism 102 is controlled to retract, the lower support rod 275 and the blade 201 are retracted downwards, the included angle theta between the lower support rod 207 and the upright post 101 is gradually reduced, the radius of the blade 201 from the upright post 101 is further reduced, and the height of the blade 201 is reduced.
And 4, step 4: if breeze power generation is needed, or the output power of the fan is needed to be improved, or the rotating speed of the fan is needed to be increased, the telescopic rods 1021 of the telescopic mechanisms 102 are controlled to extend out, all the blades 201 move upwards under the supporting action of the lower supporting rods 207, so that the blade assembly 2 is unfolded, and in the control process, the included angle between the lower supporting rods 207 and the upright post 101 needs to be kept to reach a set value not larger than 85 degrees, so that the radius and the height of the blades 201 from the upright post 101 are increased.
And 5: if the fan fails or needs to be stopped, the telescopic rod 1021 of the telescopic mechanism 102 is controlled to retract, the weight of the lower support rod 275 and the blade 201 is retracted downwards, the included angle theta between the lower support rod 207 and the upright post 101 is gradually reduced until the blade 201 is completely folded around the upright post 101 and retracted, the blade 201 does not absorb wind energy any more, and then the generator is controlled to perform electromagnetic braking, so that the fan can be rapidly braked.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention, and the invention is therefore not to be limited to the embodiments illustrated herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The push-out type vertical axis wind turbine with the adjustable radius is characterized by comprising a stand column assembly (1), a blade assembly (2) and a generator assembly (3); the mounting flange (104) at the top end of the upright post assembly (1) is connected with the stator flange (301) at the lower end of the generator assembly (3); the upper support rod (205), the parallel support rod (206) and the lower support rod (207) of the blade assembly (2) are respectively connected with an upper support rod disc (306) and a parallel support rod disc (305) of the generator assembly (3) and a lower support rod disc (1034) arranged on the stand column assembly (1); the lower turntable (103) and the blade assembly (2) are driven to extend and expand along with the extension of the telescopic mechanism (102) until the telescopic mechanism (102) extends to the maximum value, so that the included angle theta between the lower support rod (207) and the upright post (101) is smaller than a set value of 90 degrees; the lower rotating disc (103) and the blade assembly (2) are driven to be retracted along with the retraction mechanism (102); when the telescopic mechanism (102) retracts to the lower limit point, the blade assembly (2) is contracted and folded around the upright post (101).
2. The extrapolated radius-adjustable vertical-axis wind turbine of claim 1, wherein the mast assembly (1) comprises a mast (101), a telescoping mechanism (102), a lower turntable (103), a mounting flange (104); a telescopic rod (1021) in the telescopic mechanism (102) is connected with a sliding sleeve (1031) of the lower rotary disc (103) and can jack and retract the lower rotary disc (103); the mounting flange (104) is arranged at the top end of the upright post (101), the lower turntable (103) is sleeved on the upright post (101) and can slide up and down under the driving of the telescopic rod (1021), and the telescopic mechanism (102) is fixed on the side surface of the upright post (101).
3. The extrapolation radius adjustable vertical axis wind turbine according to claim 1, wherein the blade assembly (2) comprises a blade (201), an upper support (202), a parallel support (203), a lower support (204), an upper support (205), parallel struts (206), a lower support (207); the blade assembly (2) is arranged on the column assembly (1) and the generator assembly (3), so that the blades (201) are parallel to the upright (101) and form a parallel four-bar linkage structure together with the upper support rod (205) and the parallel support rod (206); the upper support (202), the parallel support (203), the lower support (204) are arranged on the blade (201) and are respectively connected with the upper supporting rod (205), the parallel supporting rod (206), and the lower supporting rod (207) and can rotate freely.
4. The extrapolated radius-adjustable vertical-axis wind turbine of claim 1, characterized in that the generator assembly (3) comprises a stator flange (301), a stator shaft (302), a generator bearing (303), an outer rotor (304), a parallel strut disc (305), an upper strut disc (306); the generator adopts an outer rotor structure, a stator flange (301) is arranged at the lower end of a stator shaft (302), an upper support rod disc (306) is arranged at the top end of an outer rotor (304), a parallel support rod disc (305) is arranged at the lower end of the outer rotor (304), and the outer rotor (304) is matched with the stator shaft (302) through a generator bearing (303); the angle direction of the installation of the parallel strut disc (305) and the upper strut disc (306) is consistent.
5. The extrapolated radius-adjustable vertical-axis wind turbine of claim 1, characterized in that the lower turntable (103) comprises a fixed sleeve (1031), a disk bearing (1032), a rotating sleeve (1033), a lower strut disk (1034); the fixed sleeve (1031) is fixed outside the upright post (101) and can adjust the height up and down, the rotating sleeve (1033) is mounted outside the fixed sleeve (1031) through a disk bearing (1032) to rotate freely, and the lower support rod disk (1034) is mounted on the rotating sleeve (1033) and can rotate freely along with the rotating sleeve.
6. The extrapolation radius adjustable vertical axis wind turbine as claimed in claim 1, wherein the upper parallel strut disk (305) and the lower strut disk (1034) have circular holes in the middle, strut seats (3051) for installing the wind turbine struts are uniformly and symmetrically distributed on the outer edge, and the upper strut disk (306) has strut seats (3061) for installing the wind turbine struts uniformly and symmetrically distributed on the outer edge.
7. The wind turbine with an adjustable extrapolation radius vertical axis as set forth in claim 1, wherein the lower turntable (103) driven by the telescoping mechanism (102) can slide up and down along the vertical column (101), and the lower support rod disk 1034 and the connected lower support rod (207) mounted on the lower turntable (103) can rotate around the vertical column (101) and provide the supporting force for the blades (201) to counteract the influence of gravity.
8. The wind turbine with external pushing radius adjustable vertical axis according to claim 1, wherein the lower struts (207) are directly connected to the blades (201) and keep the isosceles trapezoid four bar linkage configuration together with the upper struts (205) and the parallel struts (206) and keep the blades (201) and the vertical columns (101) parallel at all times.
9. The extrapolation radius adjustable vertical axis wind turbine according to claim 1, wherein the blades (201) in the blade assembly (2) are raised when deployed, increasing in height, and lowered when collapsed, decreasing in height; so as to be able to obtain a greater absorption of the wind energy in the presence of breezes.
10. The control method of the foldable vertical axis wind turbine according to any one of claims 1 to 9, wherein the system state control strategy is implemented by the following steps:
step A-1: the telescopic rod (1021) of the telescopic mechanism (102) is controlled to extend out to drive the lower turntable (103) to ascend, so that the height of the blade assembly (2) is raised and the blade assembly is unfolded to increase the rotating radius, an included angle theta between the lower supporting rod (207) and the upright post (101) is not more than 90 degrees, meanwhile, the blade (201) is in a parallel state with the upright post (101), and if wind exists, the system starts;
step A-2: if the wind speed is larger than a set value, or the output power of the fan is required to be reduced, or the rotating speed of the fan is required to be reduced, the telescopic rod (1021) of the telescopic mechanism (102) is controlled to retract and the lower rotary disc (103) is retracted downwards, all the blades (201) are retracted downwards under the action of gravity, the included angle theta between the lower support rod (207) and the upright post (101) is gradually reduced, the radius of the blades (201) from the upright post (101) is further reduced, and meanwhile, the height of the blades (201) is reduced;
step A-3: if breeze power generation is needed, or the output power of a fan is needed to be improved, or the rotating speed of the fan is needed to be increased, a telescopic rod (1021) of a telescopic mechanism (102) is controlled to extend out to drive a lower turntable (103) to ascend, all blades (201) are supported by a lower support rod (207) and expand upwards and outwards under the action of centrifugal force, so that a blade assembly (2) is unfolded, and in the control process, the included angle between the lower support rod (207) and a vertical column (101) needs to be kept to reach a set value not larger than 85 degrees, so that the radius of the blades (201) from the vertical column (101) is increased, and the height of the blades (201);
step A-4: if the fan breaks down, or when the fan is required to be stopped, the telescopic rod (1021) of the telescopic mechanism (102) is controlled to retract and the lower rotary table (103) is retracted downwards, all the blades (201) are retracted downwards under the action of gravity, the included angle theta between the lower support rod (207) and the upright post (101) is gradually reduced, the radius of the blades (201) from the upright post (101) is further reduced, meanwhile, the height of the blades (201) is reduced, the blades (201) are completely folded to the periphery of the upright post (101) and extended and retracted, the blades (201) do not absorb wind energy any more, the electromagnetic braking of the generator is controlled, and the fan can be rapidly braked.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020103951682 | 2020-05-12 | ||
| CN202010395168 | 2020-05-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111637006A true CN111637006A (en) | 2020-09-08 |
Family
ID=72326874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010515368.7A Pending CN111637006A (en) | 2020-05-12 | 2020-06-09 | Push-out type vertical axis wind driven generator with adjustable radius and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111637006A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112687200A (en) * | 2021-01-14 | 2021-04-20 | 安徽省东超科技有限公司 | Display device and intelligent lamp pole |
| CN112687201A (en) * | 2021-01-14 | 2021-04-20 | 安徽省东超科技有限公司 | Display device and intelligent lamp pole |
| CN113898532A (en) * | 2021-10-13 | 2022-01-07 | 周建伟 | Wind power generation device convenient to start and high in utilization rate |
| CN115342029A (en) * | 2022-10-19 | 2022-11-15 | 菏泽天盈新能源有限公司 | Wind-driven generator |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413481A (en) * | 2007-10-19 | 2009-04-22 | 中国海洋大学 | Foldable wind power generation plant |
| CN202628386U (en) * | 2012-04-01 | 2012-12-26 | 汕头大学 | Foldable portable wind driven generator |
| KR20130025042A (en) * | 2011-09-01 | 2013-03-11 | 주식회사 지에스엠 | Folding method capable of variable width vertical axis wind turbines |
| CN103206346A (en) * | 2012-08-08 | 2013-07-17 | 惠州市三鼎能源科技有限公司 | Balanced vertical-axis micro-miniature wind generating set |
| CN103470454A (en) * | 2013-10-08 | 2013-12-25 | 吴佳颖 | Foldable and portable H type multi-blade vertical-axis wind turbine |
| CN104481810A (en) * | 2014-12-03 | 2015-04-01 | 山东大学苏州研究院 | Automatically stretching type vertical-axis wind driven generator |
| CN108953057A (en) * | 2018-08-09 | 2018-12-07 | 石山霞 | A kind of vertical axis aerogenerator |
-
2020
- 2020-06-09 CN CN202010515368.7A patent/CN111637006A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413481A (en) * | 2007-10-19 | 2009-04-22 | 中国海洋大学 | Foldable wind power generation plant |
| KR20130025042A (en) * | 2011-09-01 | 2013-03-11 | 주식회사 지에스엠 | Folding method capable of variable width vertical axis wind turbines |
| CN202628386U (en) * | 2012-04-01 | 2012-12-26 | 汕头大学 | Foldable portable wind driven generator |
| CN103206346A (en) * | 2012-08-08 | 2013-07-17 | 惠州市三鼎能源科技有限公司 | Balanced vertical-axis micro-miniature wind generating set |
| CN103470454A (en) * | 2013-10-08 | 2013-12-25 | 吴佳颖 | Foldable and portable H type multi-blade vertical-axis wind turbine |
| CN104481810A (en) * | 2014-12-03 | 2015-04-01 | 山东大学苏州研究院 | Automatically stretching type vertical-axis wind driven generator |
| CN108953057A (en) * | 2018-08-09 | 2018-12-07 | 石山霞 | A kind of vertical axis aerogenerator |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112687200A (en) * | 2021-01-14 | 2021-04-20 | 安徽省东超科技有限公司 | Display device and intelligent lamp pole |
| CN112687201A (en) * | 2021-01-14 | 2021-04-20 | 安徽省东超科技有限公司 | Display device and intelligent lamp pole |
| CN113898532A (en) * | 2021-10-13 | 2022-01-07 | 周建伟 | Wind power generation device convenient to start and high in utilization rate |
| CN113898532B (en) * | 2021-10-13 | 2023-11-17 | 北京瑞科同创能源科技有限公司 | Wind power generation device convenient to start and high in utilization rate |
| CN115342029A (en) * | 2022-10-19 | 2022-11-15 | 菏泽天盈新能源有限公司 | Wind-driven generator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111637006A (en) | Push-out type vertical axis wind driven generator with adjustable radius and control method | |
| CN111577532A (en) | Foldable vertical axis wind turbine and control method | |
| CN110552844B (en) | Power generation device | |
| CN111577536A (en) | Inner-pushing type vertical axis wind driven generator with adjustable radius and control method | |
| TWI425145B (en) | Vertical wind power generator with automatically retractable blades | |
| CN106685316B (en) | Wind and light generating system | |
| GB2427003A (en) | Portable renewable energy apparatus | |
| KR101410492B1 (en) | Solar photovoltaic power generation device | |
| CN106089575B (en) | Anti-Typhoon ocean wind power generation platform with folding blade | |
| CN112134524B (en) | Low-resistance photovoltaic solar panel device suitable for being used in strong wind environment | |
| CN111577535A (en) | Vehicle-mounted non-support rod foldable vertical shaft wind driven generator | |
| CN106411240A (en) | Omnidirectional tracking photovoltaic power generation equipment | |
| CN109488534A (en) | A kind of wind-driven generator | |
| CN100552216C (en) | Vertical wind power generator | |
| CN113328680B (en) | Self-unfolding hybrid energy micro power station with breeze power generation function | |
| WO2022134519A1 (en) | Drive system and wind turbine generator unit | |
| CN210163035U (en) | Vertical lifting appliance for assembling wind power impeller | |
| CN115116699A (en) | Dry-type transformer for polycrystalline silicon reduction furnace | |
| CN206845384U (en) | Horizontal axis wind-driven generator | |
| CN111022252A (en) | Small-size portable vertical axis wind turbine | |
| CN215793404U (en) | Special command vehicle | |
| CN111622481A (en) | Environment-friendly building erecting device | |
| CN115603638B (en) | Easily-unfolded and folded hybrid energy micro power station | |
| CN114992045A (en) | Fan blade device of vertical axis wind driven generator | |
| CN219893246U (en) | Solar panel frame device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200908 |
|
| RJ01 | Rejection of invention patent application after publication |