CN201574891U - Wind-driven generator with multistage impellers - Google Patents
Wind-driven generator with multistage impellers Download PDFInfo
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- CN201574891U CN201574891U CN2009202787567U CN200920278756U CN201574891U CN 201574891 U CN201574891 U CN 201574891U CN 2009202787567 U CN2009202787567 U CN 2009202787567U CN 200920278756 U CN200920278756 U CN 200920278756U CN 201574891 U CN201574891 U CN 201574891U
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- 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
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- 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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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Abstract
The utility model provides a wind-driven generator with multistage impellers, comprising a tower frame and a wind-driven generator, wherein the tower frame is provided with multilayer tower frame bearing frames in the longitudinal direction; each layer of the tower frame bearing frames is provided with a through hole; the wind-driven generator also comprises a vertical shaft and a plurality of wind impellers; the vertical shaft passes through each layer of tower frame bearing frames and is rotatablely fixed with each layer of tower frame bearing frames; the wind impellers are arranged respectively in the spaces corresponding to each layer of the tower frame bearing frames; the wind impellers are rotatablely fixed on the vertical shaft; and the lower end of the vertical shaft is connected with a generating set. In the utility model, the wind-driven generator with the multistage impellers can run to generate power under the breeze with the speed of 2m/s, can also generate power under strong winds, has reasonable structure, few easily damaged parts, and small maintenance quantity, is convenient for installation and maintenance, and has the service life of 20 to 50 years.
Description
The applicant has filed an invention patent simultaneously with the present invention.
Technical Field
The utility model belongs to the technical field of wind power generation, a wind power generation equipment is related to, especially a multistage impeller aerogenerator.
Background
At present, in order to obtain larger electric power, the wind driven generator is becoming a development trend in large-scale. The existing wind driven generators are divided into a horizontal shaft type generator and a vertical shaft type generator, and the lengths of blades of the impellers are made larger and larger in order to obtain larger air collecting quantity. The generator sets weighing tens of tons and hundreds of tons are arranged at the upper end of the bracket with the height of more than 100 meters, and the installation, debugging and repair of the high altitude must be matched with the high altitude operation of a large-scale lifting machine. Due to the high center of gravity, the wind driven generator is easy to collapse under strong wind, and serious accidents are caused. The existing horizontal-axis and vertical-axis single-impeller wind driven generators achieve the purpose of reducing the safety of wind surface protection power generation equipment when the wind power is too large, the blades are subjected to direction change adjustment through the variable-blade gearbox, the variable-blade gearbox is complex in structure and easy to damage, the fault rate of the wind driven generator is high, and usually 80% of faults of the wind driven generator are on the variable-blade gearbox. In addition, the machining precision of large injection molding parts is difficult to improve due to the fact that the large blades are usually made of reinforced plastics in the prior art, and the reinforced plastics gradually shrink and age slightly over time, so that the service life of a unit is influenced. One of the using characteristics of the wind driven generator is that the wind driven generator is required to be dispersedly arranged in an open field, and the fan blade of the large wind driven generator is positioned at the highest point and is easy to be struck by lightning. The lightning arrester of the wind driven generator in the prior art is arranged on the blade and is limited by a blade rotating structure, and the lightning protection effect is not good, so that the wind driven generator is subjected to lightning stroke accidents, the lightning stroke often causes overvoltage of an electromechanical system, and the automatic control and communication elements of a fan are burnt, valuable parts such as a generator and the like are broken down, and electrical equipment is damaged; in addition to the loss of the components and equipment, the loss caused by the failure of power generation during repair is caused, so the thunderstorm damage is also a serious problem threatening the safe operation and economic operation of the wind turbine.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to improve prior art's defect, provide a rational in infrastructure, can effectively resist the wind tower upset of heavy foot light, thunder and lightning destroy, avoid wind tower too high, blade overlength risk factor reinforcing, the installation degree of difficulty increases etc. the innate not enough, makes it all can obtain make full use of no matter weak wind and strong wind, and a multistage impeller aerogenerator of being convenient for installation, debugging and repair.
The purpose of the utility model is realized like this:
the utility model provides a multistage impeller aerogenerator, including impeller pivot subassembly, pylon and generator assembly, impeller pivot subassembly includes a pivot, a plurality of wind-force impeller set up along the axial in the pivot a plurality of wind-force impeller, at every wind-force impeller with all set up centrifugal clutch between the pivot, make wind-force impeller with the pivot has following two kinds of states: one is that the wind power impeller is connected with the rotating shaft when the rotating speed of the wind power impeller is below a set value to push the rotating shaft to rotate, and the other is that the wind power impeller is separated from the rotating shaft when the rotating speed of the wind power impeller is above a set value, and the wind power impeller idles; the tower is provided with the impeller rotating shaft assembly, the rotating shaft is connected with the generator set, and the rotating shaft is rotatably supported on the tower.
The rotating shaft can be vertically arranged, can also be horizontally arranged, and can also be in a combined state, namely the rotating shaft is horizontally arranged and also vertically arranged.
The rotating shaft is vertically arranged, and can be in the structure that: the vertical shaft is provided with a plurality of wind power impellers, and a centrifugal clutch is arranged between each wind power impeller and the vertical shaft; it is also possible to have a structure in which: the vertical shaft is connected with a plurality of strut shafts through a transmission mechanism, each strut shaft is provided with one wind power impeller, the centrifugal clutch is arranged between each wind power impeller and the strut shaft, and the length of each wind power impeller on the vertical shaft is gradually reduced from bottom to top.
In this case, the generator set is disposed at a lower end of the vertical shaft, and the vertical shaft is rotatably disposed on the tower.
The rotating shaft is horizontally arranged, and can be in the structure that: a plurality of wind power impellers are arranged on the horizontal rotating shaft, and a centrifugal clutch is arranged between each wind power impeller and the horizontal rotating shaft; the blades of the plurality of wind power impellers on the horizontal rotating shaft are equal or unequal in length
One end of the horizontal rotating shaft is connected with a generator set or the horizontal rotating shaft is connected with a transmission device and is connected with the generator set arranged below the horizontal rotating shaft through the transmission device; one end of the horizontal rotating shaft is arranged on a vertical bracket, or two ends of the horizontal rotating shaft are arranged on a bracket.
The utility model provides a modular pivot structure, its includes the pivot of a level setting and the pivot of a vertical setting, sets up a plurality of wind-force impeller on this horizontal pivot, every be equipped with between wind-force impeller and the horizontal pivot centrifugal clutch, the horizontal pivot passes through drive mechanism to be connected vertical setting in the pivot, the pivot of drive this vertical setting rotates.
The generator set is arranged at the lower end of the vertically arranged rotating shaft. The horizontal rotating shaft and the vertically arranged rotating shaft are both rotatably arranged on the tower.
The wind power generator is also provided with a combined structure, namely the rotating shafts are a vertically arranged rotating shaft and at least two horizontally arranged rotating shafts, the horizontally arranged rotating shafts are connected with the vertically arranged rotating shafts through a transmission mechanism, each horizontally arranged rotating shaft is provided with a plurality of wind power impellers, and a centrifugal clutch is arranged between each wind power impeller and the horizontal rotating shaft; the length of the blades of the wind power impeller arranged on the horizontal rotating shaft arranged at different heights is shorter than that of the blades of the impeller on the horizontal rotating shaft at a higher position; the length of the blades of each impeller on the same horizontal rotating shaft can be the same or different. The generator set is arranged at the lower end of the vertically arranged rotating shaft. The vertical rotating shaft and the horizontal rotating shaft are rotatably arranged on the tower.
The centrifugal clutch arranged between the wind power impeller and the rotating shaft comprises a driving part, a centrifugal body and a driven part, wherein the driving part is the wind power impeller, the driven part is the rotating shaft on which the impeller is arranged, corresponding positions on the rotating shaft and the centrifugal body are respectively provided with matched combined structures which can be combined or separated, the centrifugal body can move between the wind power impeller and the rotating shaft so as to be fixedly connected or separated with the rotating shaft on the wind power impeller, and an elastic resetting device is also arranged between the centrifugal body and the wind power impeller. The wind power impeller is driven by wind power to rotate, the centrifugal body is pulled by the elastic resetting device to be combined with the rotating shaft to drive the rotating shaft to rotate below a certain set rotating speed, when the wind power is increased and the rotating speed of the wind power impeller is higher than the set rotating speed, the centrifugal body is thrown out to be separated from the rotating shaft, and the impeller idles; when the wind power is weakened to the rotating speed of the wind power impeller and returns to the set rotating speed or below, the centrifugal body is combined with the rotating shaft again under the action of the elastic resetting device, and the rotating shaft is driven to rotate.
And a brake device is arranged at the position of the tower corresponding to the centrifugal body on the centrifugal clutch, so that when the rotating speed of the wind power impeller exceeds the set rotating speed, the wind power impeller is thrown out and then contacts with the brake device to slow down the rotating speed of the wind power impeller.
The centrifugal body and the connecting structure between the centrifugal body and the wind power impeller can be as follows: the centrifugal body is a pendulum bob and is formed by fixedly connecting a hammer head and a swing arm connecting rod, one end of the swing arm connecting rod is hinged and fixed with the wind power impeller, and a combining structure which can be combined or separated is arranged at the corresponding position of the hammer head and the rotating shaft.
The combination structure between the centrifugal body and the rotating shaft or between the pendulum bob and the rotating shaft can be various mechanical structures. For example, a one-way ratchet wheel is arranged on the rotating shaft, and a corresponding shifting tooth part is arranged on the centrifugal body or the pendulum bob.
A particular said centrifugal clutch may be of the type which: the centrifugal body in the centrifugal clutch comprises a one-way ratchet wheel, a pendulum bob and a reset spring, the combination structure is characterized in that the one-way ratchet wheel is arranged on a rotating shaft corresponding to the wind power impeller on the rotating shaft, the pendulum bob comprises a hammer head of the combination structure and a swing arm connecting rod, the hammer head is meshed with or separated from a ratchet tooth on the ratchet wheel, the hammer head is meshed with or separated from a tooth poking part, one end of the swing arm connecting rod is connected with the hammer head, the other end of the swing arm connecting rod is hinged on the wind power impeller, and the reset spring is connected between the rotating shaft and the swing arm.
Furthermore, a brake ring is arranged on the tower corresponding to each layer of tower supporting frame around the outside of the pendulum bob, and friction plates are arranged on the outer end surface of the hammer head and the inner wall of the corresponding brake ring.
The blades on the wind power impeller are honeycomb-structure sandwich plates.
The tower is a triangular tower with a triangular cross section, and/or the cross section of the tower is reduced from bottom to top; from top to bottom, set up the multilayer supporting rack on the pylon, set up the perforation on the supporting rack and supply vertical pivot setting, set up the bearing between vertical pivot and the supporting rack.
The blades of each of the wind turbines are within the frame of the tower.
The rotating shaft which is vertically arranged is of a multi-section structure, each section of shaft is connected with the corresponding section of shaft through a flexible coupling or an elastic coupling, and each shaft section corresponds to one wind power impeller.
When the rotating shaft is arranged horizontally, the flexible or elastic coupling is arranged on the shaft section of the horizontal rotating shaft connected with the generator set.
And arranging a lightning arrester at the top end of the tower.
The utility model provides a multistage impeller aerogenerator has changed among the prior art and has just increased the custom thinking with single impeller for the increase wind face, adopts and sets up a plurality of wind-force impeller in the pivot, though the blade length of every impeller has reduced, but, than the long single impeller aerogenerator of thick liquid of current horizontal axis, the utility model discloses power generation system's wind face top-down distributes, and not light wind area does not reduce, and is higher to the utilization ratio of wind-force. In the prior art, a wind power impeller is arranged at a higher position, when the angular speed of the impeller exceeds a set value due to overlarge wind power, the angle of blades is adjusted through a variable blade gear box, the windward area is reduced, and the rotating speed of the impeller is reduced to ensure safety. Natural wind is usually high in height and low in height, so that when strong wind is blown, the wind at the lower level is relatively low, and at the moment, the wind at the lower level may be just suitable for being used as the driving force of the impeller of the generator, while the existing wind-driven generator does not have the impeller at the lower level or the length of the blade of the impeller at the lower level is the same as that of the blade at the high level, and the wind at the low level is not well utilized. In the utility model, the impellers are arranged from top to bottom, and the length of the blades of the impellers is gradually increased from top to bottom, the multi-stage impeller which is not innovative before is arranged in a vertical mode, does not need to artificially adjust the wind direction to strengthen the wind power, can be connected with the wind coming from the eight directions, moreover, the wind driven generator can generate electricity normally and uninterruptedly at a constant speed in a large wind power range, taking the wind driven generator with a vertical rotating shaft as an example, under strong wind, the wind power impeller with the shortest blade at the top is sequentially separated from the rotating shaft, so that the overload prevention and safe power generation can be ensured, under weak wind, for example, under 2-level wind, some wind impellers with smaller blade length and higher position arranged on the upper part of the vertical shaft can still be blown by wind to push the rotating shaft to rotate so as to generate electricity, therefore, the wind power generator can uniformly generate power under a large wind intensity range such as strong wind and weak wind. Therefore, the wind power generator can generate more electric power than a common wind power generator. And simultaneously, the utility model discloses a change the conventional structure of adjusting wind-force impeller's blade angle through becoming the impeller gear case among the prior art, solve the high wind overload protection problem through setting up centrifugal clutch between wind-force impeller and pivot. Therefore, the structure of the wind driven generator is greatly simplified, the weight of the machine head at the top of the tower is greatly reduced, the gravity center of the whole structure is greatly reduced, the failure rate and the maintenance amount are also relatively greatly reduced, and therefore the stability is improved, and the service life and the economical efficiency of the wind driven generator are also improved. And, use the utility model provides a wind power generation impeller pivot subassembly, the pivot level setting of being connected with the impeller can not be like current horizontal axis formula aerogenerator first heavy foot light yet, can effectively avoid the too high, the paddle overlength risk factor reinforcing of wind tower, and the installation degree of difficulty increases the congenital deficiency such as for aerogenerator's security improves greatly. The multistage impeller structure in this wind power generation impeller pivot subassembly and power generation system, including the multistage formula structure of pivot, can the segmentation installation when the installation, and set up less impeller in the eminence, so installation, debugging and repair are all very convenient. Therefore, the utility model provides a multistage impeller aerogenerator is rational in infrastructure, can effectively resist the strong wind and overturn, but make full use of wind energy just is convenient for install, debug and repair.
Drawings
Fig. 1 is a schematic structural diagram of a structure of a multistage impeller wind power generator provided by the present invention;
FIG. 2 is a main sectional structural view of the wind impeller coupled to a vertical shaft by a centrifugal clutch;
FIG. 3 is a schematic top view of the wind impeller coupled to the vertical shaft by the centrifugal clutch;
FIG. 4 is a schematic structural view of an elastic coupling for forming a multi-section vertical shaft;
FIG. 5 is a schematic structural view of another vertical axis multi-stage impeller wind turbine;
FIG. 6 is a schematic structural view of a horizontal axis multi-stage impeller wind turbine;
FIG. 7 is a schematic structural view of another horizontal-axis multi-stage-impeller wind turbine;
FIG. 8 is a schematic structural diagram of a vertical-axis and horizontal-axis combined multi-stage impeller wind power generator, namely a matrix-type impeller wind power generation impeller rotating shaft assembly;
fig. 9 is a schematic structural view of a honeycomb-structured impeller blade.
Detailed Description
As shown in fig. 1, 2 and 3, the present invention provides a multistage impeller wind power generator comprising a tower 1 having a triangular cross section and a turbine wind power generator.
The tower 1 is a triangular tower with a triangular cross section. Compared with the existing rectangular section tower, the triangular tower is not easy to overturn by wind because a plurality of lateral windward sides are lateral sides. In the longitudinal direction of the tower 1, a plurality of layers of tower support frames 10 are arranged from top to bottom, and each layer of tower support frame is provided with a through hole 11.
The turbine wind power generator comprises a vertical shaft 2 and a plurality of wind power impellers 3, wherein the vertical shaft 2 penetrates through holes 11 in each layer of tower support frame 10 and is rotatably fixed with each layer of tower support frame 10 through bearings 21, the wind power impellers 3 are respectively arranged in spaces between the corresponding layers of tower support frames, each wind power impeller 3 comprises a hub bedplate 31 at the center and blades 32 fixedly arranged on the outline of the hub bedplate, a bearing 22 is arranged between the hub bedplate 32 of the wind power impeller 3 and the vertical shaft 2 and is rotatably fixed on the vertical shaft 2 through the bearings, and the lower end of the vertical shaft 2 is connected with a generator set 5.
A centrifugal clutch 4 is provided between the wind impeller 3 and the vertical shaft 2, so that the wind impeller 3 and the vertical shaft 2 have the following two states: one is that the wind impeller is connected with the vertical shaft to push the vertical shaft to rotate when the wind power is small, and the other is that the wind impeller is separated from the vertical shaft to idle when the wind power is large.
The centrifugal clutch 4 provided between each wind impeller 3 and the vertical shaft 2 may be of a structure in which: as shown in fig. 2 and 3, the centrifugal clutch includes a one-way ratchet 41, a pendulum 42 and a return spring 43, the one-way ratchet 41 is disposed on the vertical shaft 2 between the tower supports corresponding to the wind power impeller, the pendulum 42 includes a hammer 421 engaged with or disengaged from the ratchet teeth of the ratchet 41 and a swing arm link 422, one end of the swing arm link 422 is connected to the hammer 421, the other end thereof is hinged to the hub plate 31 of the wind power impeller 3 through a hinge shaft 423, and the return spring 43 is connected between the vertical shaft 2 and the swing arm link 422.
In a static state, the hammer head 421 on the pendulum bob 42 is meshed with the one-way ratchet wheel on the vertical shaft 2, and when wind power is small, the wind power impeller rotates to drive the vertical shaft to rotate, so that wind power generation is performed. When the wind force is increased, the pendulum bob 42 is subjected to a larger centrifugal force, the hammer head 421 is disengaged from the ratchet wheel, and at the moment, the wind force impeller rotates in a null way and does not drive the vertical shaft to rotate.
The utility model discloses a wind-force impeller breaks away from the structure that combines with generating set such as turbo generator's main shaft when wind-force is great, can avoid causing the damage of turbo generator parts under the strong wind because of wind-force is too big. Such a design seems to take an insufficient advantage of wind energy, but actually makes more reasonable use of wind energy. The wind force is always stronger at the high part and weaker at the low part. In the prior art, the tower is built higher and higher to obtain larger wind power by the horizontal axis wind power generator, and the wind power at the lower part is not considered to be utilized. And the utility model provides a wind driven generator through from the top down set up multistage wind-force impeller on the vertical axis, also utilizes the wind-force of lower department. When the wind power is large, the rotating speed of some wind power impellers on the upper part of the vertical shaft is too high, which may have adverse effect on the generator, the wind power obtained by the wind power impellers at the lower position is the strength suitable for generating power, and the impellers are still connected with the vertical shaft to drive the vertical shaft. Therefore, the wind power generator is required to be more fully and safely utilized. And when the wind power is too large, the impeller is disengaged from the vertical shaft, so that the generator system is protected. The impeller rotates at high speed due to excessive wind power, and the impeller is also adversely affected by high-speed idling after the impeller is separated from the rotating shaft. In order to avoid damage to the impeller due to excessive wind power, a brake device can be arranged on the tower support frame, so that when the wind power exceeds a certain strength after the impeller is separated from the rotating shaft, the brake device can be contacted with the impeller to slow down the rotating speed of the impeller. A brake ring 44 is provided around the outside of the bob 42 on the tower corresponding to each layer of the tower support frame 10, a friction plate 441 is provided on the inner sidewall of the brake ring 44, and a friction plate 424 is provided on the outer end surface of the hammer 421. When the wind power is too large, the hammer 421 contacts with the brake ring outside under the action of centrifugal force, and the wind power impeller can be decelerated and protected under the action of the brake ring and the friction plates on the hammer. The utility model provides a brake equipment, because the centrifugation body in the clutch is the pendulum structure that one end articulates on the impeller, increase when wind-force, the tup of pendulum outwards moves under the effect of centrifugal force, make the rotational speed of impeller reduce in the twinkling of an eye with the contact of brake ring, the tup separates with brake ring promptly, increase again when the wind speed, the tup will contact with brake ring and separate again, the inching has just been implemented to the impeller like this, compared and held tightly the brake, such inching can be to the steady speed reduction of impeller, can not produce the vibration, ensure the safety of power generation system and the life of blade.
To improve the strength of the wind turbine, the blades 32 of the wind turbine may be a honeycomb-structure sandwich support frame (as shown in fig. 9), which may be made of a light metal such as an aluminum alloy material, or may be made of various materials suitable for the use environment.
The length of the blades of the plurality of wind power impellers on the vertical shaft of the wind power generator of the turbine is gradually reduced from bottom to top. The blades of each of the wind turbines are within the frame of the tower. Such a construction allows all wind power impellers to be located within the frame-like high voltage shield of a triangular section tower, which protects all the impellers and the generator set if the tower has lightning protection means.
The lightning conductor 6 of the tower is mounted at the top end of the tower 1.
The vertical shaft of the wind power generation system generally needs to be dozens of meters or even hundreds of meters in height, and in order to facilitate manufacturing and reduce installation and manufacturing precision, the vertical shaft 2 is preferably of a multi-section structure, and each section of the shaft is connected through a flexible coupling. And each shaft section is correspondingly provided with one wind power impeller. The coupling may be an elastic coupling (as shown in fig. 4), for example. Specifically, the coupling 70 includes an elastic member 71, a connecting flange 201, a connecting flange 72, and a locking bolt 73, the flanges 201 and 72 are disposed at adjacent ends of the two shaft segments 20, the flanges and the shaft segments 20 may be welded or screwed or fixedly coupled by interference fit, the elastic member made of a flexible material or an elastic material is disposed between the two shaft segments, and the two flanges are connected by the locking bolt 73 to connect the two shaft segments. The sectional structure of the vertical shaft 2 can compensate the offset of the vertical shaft, and can well buffer and absorb the impact and vibration of the impeller along with the clutch of wind power and the vertical shaft.
The utility model provides a triangle pylon design has four big characteristics: firstly, the wind wheel is the simplest and economical stable structure, and particularly, the installation mode of taking a single wind wheel as an assembly and heightening layer by layer is adopted, so that the wind wheel has the characteristics of simplicity and convenience in structure, installation (including debugging) and maintenance compared with the existing single-tower type fan; secondly, based on the former design concept, the utility model is more suitable for the use of complex wind fields with terrains such as sea, mountain land and the like; thirdly, based on the characteristics of the first two points, the utility model is more flexible in the selection of wind fields, namely wind collection points, can be independently arranged in remote islands and villages and towns in mountainous areas, and can supply power in a dispersed manner without laying cables to be merged into a power grid; fourthly, the structure can also ensure that all the wind power impellers are positioned in the frame type high-voltage shielding cover of the tower with the triangular section, and the top end of the tower is provided with the lightning arrester, so that all the impellers and the generator set can be protected from being damaged by thunder.
The utility model provides a multistage impeller aerogenerator of vertical setting pivot can operate the electricity generation under the breeze that the wind speed is 2 ms, when wind-force crescent, breaks away from the combination with the pivot from the wind-force impeller of top in proper order downwards, and rational in infrastructure, vulnerable part are few, and the maintenance volume is little, is convenient for install, maintain, and life can reach 20-50 years.
The utility model provides a multistage impeller aerogenerator, wherein the pivot except as before vertical setting, some following structural style can also have.
As shown in fig. 5, a plurality of strut shafts 82 are connected to the vertical shaft 8 via a transmission mechanism such as a pair of bevel gears 81, one wind turbine 3 is provided on each strut shaft 82, and the centrifugal clutch is provided between the wind turbine 3 and the strut shaft 82.
In this case, the generator set is disposed at the lower end of the vertical shaft 8. The vertical shaft is provided with a bearing 21 which is connected with and supported by the tower.
In the above configuration, the impeller blades on the upper strut shaft 82 have a small length, and the impeller blades on the lower strut shaft 82 have a large length. Other structures are as in the previous embodiments.
The rotating shaft can also be horizontally arranged.
As shown in fig. 6, a plurality of wind-driven impellers 3 are arranged on the horizontal rotating shaft 9, and the centrifugal clutch is arranged between each wind-driven impeller 3 and the horizontal rotating shaft 9;
one end of the horizontal rotating shaft 9 is connected with a generator set 5 (not shown in the figure), and a flexible or elastic coupling 70 is arranged on the shaft section between the horizontal rotating shaft and the generator set; one end of the horizontal rotation shaft is provided on an upright bracket 100, or both ends of the horizontal rotation shaft are provided on the bracket. The horizontal rotating shaft is provided with a bearing 21 which is connected with the tower for supporting.
The rotating shaft is horizontally arranged, and can also be in the structure that: as shown in fig. 7, a plurality of wind-driven impellers 3 are arranged on the horizontal rotating shaft 9, the centrifugal clutch is arranged between each wind-driven impeller and the horizontal rotating shaft, and one end of the horizontal rotating shaft 9 is connected to a vertically arranged rotating shaft 8 through a transmission mechanism, such as a pair of bevel gears 81, and drives the vertically arranged rotating shaft to rotate. The other end of the horizontal rotation shaft may be supported on a bracket 200.
The generator set 5 is arranged at the lower end of the vertically arranged rotating shaft 8 (not shown in the figure). A flexible or elastic coupling 70 is provided on the vertically disposed shaft connecting the generator set and the transmission mechanism, such as bevel gear 81.
The lengths of the blades of the wind power impellers arranged on the horizontal rotating shaft in the two embodiments can be equal or unequal.
As shown in fig. 8, the rotating shafts are a vertically arranged rotating shaft 8 and at least two horizontally arranged rotating shafts 9, one end of each horizontally arranged rotating shaft 9 is connected with the vertically arranged rotating shaft 8 through a transmission mechanism, such as a pair of bevel gears 81, each horizontally arranged rotating shaft 9 is provided with a plurality of wind power impellers, and the centrifugal clutch is arranged between each wind power impeller and the horizontal rotating shaft, which may be the same as the structure shown in fig. 6 and 7. The other end of each horizontal rotation shaft is supported on the bracket 200. The horizontal rotating shaft is provided with a bearing 21 which is connected with the tower for supporting. The generator set 5 is connected at the lower end of a rotating shaft 9 which is vertically arranged. Thus, a matrix type wind driven generator is formed. The structure can effectively enlarge the wind collecting surface. In this structure, the length of the impeller blades on the upper horizontal rotary shaft 9 is small, and the length of the impeller blades on the lower horizontal rotary shaft 9 is large. Flexible or elastic couplings 70 are provided between each bevel gear of the vertically arranged shafts and on the shaft sections connecting the generator set and the transmission mechanism.
The utility model discloses a blade on the wind-force impeller adopts metal material, adopts the honeycomb sandwich panel to make, compares with among the prior art glass steel blade and has following advantage: 1. the honeycomb structure sandwich plate blade has high strength, is easy to realize the design precision, is not easy to age, and has long service life; 2. the honeycomb blade is light in weight, and particularly has high power generation efficiency under the condition of weak wind, and vice versa. The blades of the wind power impeller can be designed into cambered surfaces, and are different from the existing flat plate blade design structure, a wind deflector is not required to be arranged on a tower, and the wind can be blown by the incoming wind in different directions.
Claims (10)
1. A multi-stage impeller wind-driven generator is characterized in that: the wind power generator comprises an impeller rotating shaft assembly, a tower and a generator assembly, wherein the impeller rotating shaft assembly comprises a rotating shaft and a plurality of wind power impellers, the wind power impellers are axially arranged on the rotating shaft, and a centrifugal clutch is arranged between each wind power impeller and the rotating shaft, so that the wind power impellers and the rotating shaft have the following two states: one is that the wind power impeller is connected with the rotating shaft when the rotating speed of the wind power impeller is below a set value to push the rotating shaft to rotate, and the other is that the wind power impeller is separated from the rotating shaft when the rotating speed of the wind power impeller is above a set value, and the wind power impeller idles; the tower is provided with the impeller rotating shaft assembly, the rotating shaft is connected with the generator set, and the rotating shaft is rotatably supported on the tower.
2. The multi-stage impeller wind power generator of claim 1, wherein: the rotating shaft is vertically arranged, and/or the rotating shaft is horizontally arranged.
3. The multi-stage impeller wind generator of claim 2, wherein: the rotating shaft is vertically arranged, a plurality of wind power impellers are arranged on the vertical shaft, the centrifugal clutch is arranged between each wind power impeller and the vertical shaft, and the generator set is arranged at the lower end of the vertical shaft; the vertical shaft is rotatably arranged on the tower, and the length of the blades of the plurality of wind power impellers on the vertical shaft is gradually reduced from bottom to top; or,
the rotating shaft is vertically arranged, the vertical shaft is connected with a plurality of strut shafts through a transmission mechanism, each strut shaft is provided with one wind power impeller, the centrifugal clutch is arranged between each wind power impeller and the strut shaft, and the generator set is arranged at the lower end of the vertical shaft; the vertical shaft is rotatably arranged on the tower, and the length of the blades of the plurality of wind power impellers on the vertical shaft is gradually reduced from bottom to top; or,
the rotating shaft is horizontally arranged, a plurality of wind power impellers are arranged on the horizontal rotating shaft, the centrifugal clutch is arranged between each wind power impeller and the horizontal rotating shaft, and one end of the horizontal rotating shaft is connected with the generator set or is connected with the generator set arranged below the horizontal rotating shaft through a transmission device; one end of the horizontal rotating shaft is arranged on the vertical tower frame, or two ends of the horizontal rotating shaft are arranged on the tower frame, and the lengths of the blades of the plurality of wind power impellers on the horizontal rotating shaft are equal or unequal; or,
the rotating shaft is of a combined rotating shaft structure and comprises a horizontally arranged rotating shaft and a vertically arranged rotating shaft, a plurality of wind power impellers are arranged on the horizontal rotating shaft, the centrifugal clutch is arranged between each wind power impeller and the horizontal rotating shaft, and the lengths of the blades of the plurality of wind power impellers on the horizontal rotating shaft are equal or unequal; the horizontal rotating shaft is connected to the vertically arranged rotating shaft through a transmission mechanism to drive the vertically arranged rotating shaft to rotate, and the generator set is arranged at the lower end of the vertically arranged rotating shaft; the horizontal rotating shaft and the vertically arranged rotating shaft are rotatably arranged on the tower; or,
the rotating shafts are of a combined type rotating shaft structure and comprise a vertically arranged rotating shaft and at least two horizontally arranged rotating shafts, the horizontally arranged rotating shafts are connected with the vertically arranged rotating shafts through a transmission mechanism, a plurality of wind power impellers are arranged on each horizontally arranged rotating shaft, and a centrifugal clutch is arranged between each wind power impeller and the horizontal rotating shaft; the lengths of the blades of the plurality of wind power impellers on the same horizontal rotating shaft are equal or unequal; the length of the blades of the wind power impeller arranged on the horizontal rotating shaft arranged at different heights is shorter than that of the blades of the impeller on the horizontal rotating shaft at a higher position; the generator set is arranged at the lower end of the rotating shaft which is vertically arranged; the vertical rotating shaft and the horizontal rotating shaft are rotatably arranged on the tower.
4. The multi-stage impeller wind power generator of claim 1, wherein: the centrifugal clutch arranged between the wind power impeller and the rotating shaft comprises a driving part, a centrifugal body and a driven part, wherein the driving part is the wind power impeller, the driven part is the rotating shaft on which the wind power impeller is arranged, corresponding parts on the rotating shaft and the centrifugal body are respectively provided with matched combined structures which can be combined or separated, the centrifugal body can move between the wind power impeller and the rotating shaft so as to be fixedly connected or separated with the rotating shaft on the wind power impeller, and an elastic resetting device is also arranged between the centrifugal body and the wind power impeller; or,
the blades on the wind power impeller are honeycomb structure sandwich plates; or,
the blades of the wind power impeller are cambered surfaces.
5. The multi-stage impeller wind generator of claim 4, wherein: and a brake device is arranged at the position of the tower corresponding to the centrifugal body on the centrifugal clutch, so that the rotating speed of the wind power impeller is reduced by contacting with the brake device after the rotating speed of the wind power impeller exceeds a set rotating speed and is thrown out.
6. The multi-stage impeller wind generator of claim 4, wherein: the connection structure between the centrifugal body and the wind power impeller is as follows: the centrifugal body is a pendulum bob and is formed by fixedly connecting a hammer head and a swing arm connecting rod, and one end of the swing arm connecting rod is hinged and fixed with the wind power impeller.
7. The multi-stage impeller wind generator of claim 4, wherein: the centrifugal clutch is of a structure that: the centrifugal body in the centrifugal clutch comprises a pendulum and a reset spring, the combining structure is a one-way ratchet wheel on the rotating shaft and is arranged on the rotating shaft corresponding to the wind power impeller, the pendulum comprises a hammer head and a swing arm connecting rod, the hammer head is provided with a tooth poking part of the combining structure which is meshed with or separated from a ratchet on the ratchet wheel, one end of the swing arm connecting rod is connected with the hammer head, the other end of the swing arm connecting rod is hinged on the wind power impeller, and the reset spring is connected between the rotating shaft and the swing arm connecting rod; or, a brake ring is arranged on the tower corresponding to each layer of tower laminate around the outside of the pendulum bob, and friction plates are arranged on the outer end surface of the hammer head and the inner wall of the corresponding brake ring.
8. The multi-stage impeller wind power generator of claim 3, wherein: when the rotating shaft is vertically arranged, the length of the blades of the plurality of wind power impellers on the vertical shaft is gradually reduced from bottom to top, or,
in the assembly comprising a vertical shaft and at least two horizontal rotating shafts, the diameter of the wind-force impeller on the upper horizontal rotating shaft is smaller, the diameter of the wind-force impeller on the lower horizontal rotating shaft is larger, and the lengths of the blades of a plurality of wind-force impellers on the same horizontal rotating shaft are equal or unequal; or,
in a rotating shaft assembly comprising a horizontally arranged rotating shaft and a vertically arranged rotating shaft, a plurality of impellers are arranged on the horizontal rotating shaft, and the lengths of the blades of the impellers are equal or unequal; or,
in the assembly, a plurality of strut shafts are connected to the vertical shaft through a transmission mechanism, the diameter of the wind power impeller on the upper strut shaft is smaller, and the diameter of the wind power impeller on the lower strut shaft is larger; or,
the vertical rotating shaft is of a multistage sectional structure, each section of shaft section is connected through a flexible or elastic coupling, and one wind power impeller is arranged on each shaft section.
9. The multi-stage impeller wind power generator of claim 1, wherein: the blades of each of the wind turbines are within the frame of the tower; or,
and arranging a lightning arrester at the top end of the tower.
10. The multi-stage impeller wind power generator according to claim 2, 3 or 9, wherein: the tower is a triangular tower with a triangular cross section, and/or the cross section of the tower is reduced from bottom to top; from top to bottom, set up multistage layer supporting rack on the pylon, set up the perforation on the supporting rack and supply vertical setting the pivot setting, set up the bearing between vertical pivot and the column plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202787567U CN201574891U (en) | 2009-11-09 | 2009-11-09 | Wind-driven generator with multistage impellers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202787567U CN201574891U (en) | 2009-11-09 | 2009-11-09 | Wind-driven generator with multistage impellers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201574891U true CN201574891U (en) | 2010-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202787567U Expired - Lifetime CN201574891U (en) | 2009-11-09 | 2009-11-09 | Wind-driven generator with multistage impellers |
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| Country | Link |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852179B (en) * | 2009-11-09 | 2012-12-26 | 卢国骥 | Multi-stage impeller wind-driven generator |
| CN104912745A (en) * | 2015-06-29 | 2015-09-16 | 许润柱 | Wind power, tide and working power generation system |
| CN107076121A (en) * | 2014-09-05 | 2017-08-18 | 威恩德-伊特公司 | The pylon structure of vertical-shaft wind machine rotor |
| CN107131101A (en) * | 2017-03-23 | 2017-09-05 | 生瑞涛 | The composing method of vertical axis wind electric unit generating field |
| CN107179565A (en) * | 2017-07-26 | 2017-09-19 | 钱克韦 | A kind of air weather detecting system for High aititude |
| CN112128051A (en) * | 2020-10-21 | 2020-12-25 | 温州砼程维禹科技有限公司 | Vertical multilayer wind power generation device |
-
2009
- 2009-11-09 CN CN2009202787567U patent/CN201574891U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852179B (en) * | 2009-11-09 | 2012-12-26 | 卢国骥 | Multi-stage impeller wind-driven generator |
| CN107076121A (en) * | 2014-09-05 | 2017-08-18 | 威恩德-伊特公司 | The pylon structure of vertical-shaft wind machine rotor |
| CN107076121B (en) * | 2014-09-05 | 2019-07-23 | 威恩德-伊特公司 | The pylon structure of vertical-shaft wind machine rotor |
| CN104912745A (en) * | 2015-06-29 | 2015-09-16 | 许润柱 | Wind power, tide and working power generation system |
| CN107131101A (en) * | 2017-03-23 | 2017-09-05 | 生瑞涛 | The composing method of vertical axis wind electric unit generating field |
| CN107179565A (en) * | 2017-07-26 | 2017-09-19 | 钱克韦 | A kind of air weather detecting system for High aititude |
| CN112128051A (en) * | 2020-10-21 | 2020-12-25 | 温州砼程维禹科技有限公司 | Vertical multilayer wind power generation device |
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