CN112523952B - Permanent magnet wind driven generator with torque gradient adjustment function - Google Patents
Permanent magnet wind driven generator with torque gradient adjustment function Download PDFInfo
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- CN112523952B CN112523952B CN202011345412.0A CN202011345412A CN112523952B CN 112523952 B CN112523952 B CN 112523952B CN 202011345412 A CN202011345412 A CN 202011345412A CN 112523952 B CN112523952 B CN 112523952B
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- 230000003044 adaptive effect Effects 0.000 claims abstract description 9
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- 238000013459 approach Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 abstract description 14
- 238000010168 coupling process Methods 0.000 abstract description 14
- 238000005859 coupling reaction Methods 0.000 abstract description 14
- 230000002829 reductive effect Effects 0.000 abstract description 11
- 230000007246 mechanism Effects 0.000 abstract description 4
- 238000010248 power generation Methods 0.000 description 12
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- 230000008569 process Effects 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
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- 230000036961 partial effect Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
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- 238000013461 design Methods 0.000 description 2
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- 230000004308 accommodation Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 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
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
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- 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
- F03D15/00—Transmission of mechanical power
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- 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
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- 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
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- 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
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- 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
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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
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Wind Motors (AREA)
Abstract
The invention relates to a torque gradient-regulated permanent magnet wind driven generator, which comprises: the fan blade, the connecting rod, the stator, the rotor and the shell; the housing is provided with an accommodating cavity, and the stator and the rotor are accommodated in the accommodating cavity; the stator is provided with a plurality of permanent magnets, the rotor is connected with the connecting rod, and the connecting rod extends out of the housing from the accommodating cavity and then is connected with the fan blade; the permanent magnet wind driven generator with the torque gradient adjustment function further comprises a self-adaptive adjustment component, and the self-adaptive adjustment component is accommodated in the accommodating cavity and is connected with the connecting rod; the adaptive adjusting component drives the stator to slide along the connecting rod, so that the stator is close to or far away from the rotor. The permanent magnet wind driven generator with the torque gradient adjustment function provided by the invention adjusts the coupling degree of the stator and the rotor through the self-adaptive adjusting mechanism, so that the self-adaptive self-tendency type self-adaptive torque adjustment is realized, the starting inertia is further reduced, and the purpose of starting by small wind is achieved.
Description
Technical Field
The invention relates to the technical field of wind power generation, in particular to a permanent magnet wind power generator with torque gradient adjustment.
Background
Wind power generation is increasingly favored as a clean energy source. The principle of wind power generation is as follows: the windmill blades are driven to rotate by natural wind power, and the rotating speed is increased by the speed increaser to promote the power generation equipment to generate power. In short, wind power generation is a process of converting wind energy into mechanical energy and then converting the mechanical energy into electric energy. The process does not need fuel and radiation, does not pollute the air and the environment, and is clean energy.
The invention has the following patent: the torque-adjustable permanent magnet variable-speed wind power generation device disclosed in the publication No. CN104500344A has the following problems:
the starting inertia is large, and when the wind power is too small, the wind power cannot start the fan blades to rotate. Namely, the wind power generation device can be started to work and generate power normally when certain wind power is required to be achieved. Therefore, the wind power generation device has a small application range and a large limitation.
Of course, in the invention patent with the publication number CN104500344A, the traction mechanism is arranged to pull the distance between the permanent magnet and the first input rotor far when the wind power is small, so that the suction force between the permanent magnet and the first input rotor is reduced, and the purpose of reducing the starting inertia is achieved, thereby reducing the starting wind power of the power generation device. However, in the aforementioned patent publication No. CN104500344A, the pulling mechanism includes: a motor, a speed reducer, a connecting rod and the like. Therefore, the wind power generation device needs an external power source, the structure of the wind power generation device is too complex, and the reliability is reduced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a torque gradient-regulated permanent magnet wind driven generator, which can realize the self-adaptive regulation of torque in a passive mode by regulating the coupling degree of a stator and a rotor through an adaptive regulation mechanism, thereby reducing the starting inertia and achieving the purpose of starting with low wind power.
The purpose of the invention is realized by the following technical scheme:
a torque gradient regulated permanent magnet wind generator comprising: the fan blade, the connecting rod, the stator, the rotor and the shell; the housing is provided with an accommodating cavity, and the stator and the rotor are accommodated in the accommodating cavity; the stator is provided with a plurality of permanent magnets, the rotor is connected with the connecting rod, and the connecting rod extends out of the housing from the accommodating cavity and then is connected with the fan blade;
the permanent magnet wind driven generator with the torque gradient adjustment function further comprises a self-adaptive adjustment component, and the self-adaptive adjustment component is accommodated in the accommodating cavity and is connected with the connecting rod; the adaptive adjusting component drives the stator to slide along the connecting rod, so that the stator is close to or far away from the rotor.
In one embodiment, the self-adaptive adjusting assembly comprises a plurality of centrifugal pieces and a plurality of first return springs which correspond to the centrifugal pieces one by one, and the centrifugal pieces are connected with the outer wall of the connecting rod through the first return springs; the plurality of centrifugal pieces are distributed in an annular array by taking the central shaft of the connecting rod as the center;
the self-adaptive adjusting assembly further comprises more than one second return spring, the stator is connected with the inner wall of the shell through the second return spring, and the second return spring provides elastic restoring force for the stator, so that the stator has a tendency of being far away from the rotor;
the stator is provided with a sleeve part which is sleeved on the outer walls of the centrifugal pieces, and the outer walls of the centrifugal pieces are of inclined surface structures.
In one embodiment, the torque gradient adjusted permanent magnet wind turbine further comprises a gradient adjustment assembly, wherein the gradient adjustment assembly comprises a gradient locking rod and a third return spring; the connecting rod is provided with a containing guide groove, and the gradient locking rod is arranged in the containing guide groove through the third return spring;
the gradient locking rod is provided with an unlocking convex part and a plurality of gradient locking convex parts, and the third return spring provides elastic restoring force for the gradient locking rod, so that the unlocking convex part and the gradient locking convex parts have the tendency of protruding out of the accommodating guide grooves;
the unlocking bulge part is abutted against or separated from the inner wall of the centrifugal piece; the stator is also provided with a gradient locking part which is clamped or separated with the gradient locking bulge.
In one embodiment, the gradient lock projection has a lock inclined guide surface on a side thereof adjacent the centrifuge.
In one embodiment, the number of the gradient locking projections is three.
In one embodiment, the number of the centrifugal pieces is four.
In one embodiment, the number of the second return springs is plural.
In one embodiment, the second return springs are distributed in an annular array around a central axis of the stator.
In one embodiment, the number of the gradient adjustment assemblies is multiple.
In one embodiment, the number of the gradient adjusting assemblies is three, and the gradient adjusting assemblies correspond to the centrifugal pieces one by one.
The permanent magnet wind driven generator with the torque gradient adjustment function provided by the invention adjusts the coupling degree of the stator and the rotor through the self-adaptive adjusting mechanism, so that the self-adaptive self-tendency type self-adaptive torque adjustment is realized, the starting inertia is further reduced, and the purpose of starting by small wind is achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural view of a torque gradient modulated permanent magnet wind turbine according to the present invention;
FIG. 2 is a partial cross-sectional view of the torque gradient modulated permanent magnet wind turbine shown in FIG. 1;
FIG. 3 is a schematic view of a portion of the structure of FIG. 2;
FIG. 4 is a partial cross-sectional view of FIG. 3;
FIG. 5 is a schematic view (one) of the centrifuge and the first return spring of FIG. 3;
FIG. 6 is a schematic view (two) of the centrifuge shown in FIG. 3 in cooperation with a first return spring;
FIG. 7 is a schematic view showing a state where the gradient lock protrusion is separated from the gradient lock portion;
FIG. 8 is a schematic view of the gradient lock protrusion snap-engaging with the gradient lock;
FIG. 9 is a schematic view of a portion of the structure of FIG. 7;
FIG. 10 is an enlarged view of a portion of FIG. 9 at A;
FIG. 11 is a schematic view of a portion of the structure of FIG. 8;
fig. 12 is a partial enlarged view of fig. 11 at B.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 and 2, the present invention provides a torque gradient adjusting permanent magnet wind turbine 10, comprising: fan blade 20, connecting rod 30, stator 40, rotor 50 and shell 60. The housing 60 has a receiving cavity 70, and the stator 40 and the rotor 50 are received in the receiving cavity 70. The stator 40 is provided with a plurality of permanent magnets (not shown), the rotor 50 is connected with the connecting rod 30, and the connecting rod 30 extends out of the housing 60 from the accommodating cavity 70 and then is connected with the fan blade 20. In this embodiment, the side wall of the stator 40 is provided with permanent magnets with different pole pairs, and the N poles and S poles of the permanent magnets are arranged according to an alternate rule.
As shown in fig. 2, in particular, the torque gradient adjusting permanent magnet wind turbine 10 further includes an adaptive adjusting assembly 80, and the adaptive adjusting assembly 80 is accommodated in the accommodating cavity 70 and connected to the connecting rod 30. The adaptive adjustment assembly 80 drives the stator 40 to slide along the connecting rod 30 so that the stator 40 moves toward or away from the rotor 50.
As shown in fig. 3, 4, 5 and 6, specifically, the adaptive adjustment assembly 80 includes a plurality of centrifugal members 100 and a plurality of first return springs 200 corresponding to the centrifugal members 100 one by one, and the plurality of centrifugal members 100 are connected to the outer wall of the connecting rod 30 through the first return springs 200; and, a plurality of centrifugal pieces 100 are distributed in a circular array centering on the central axis of the connecting rod 30. In this embodiment, the centrifugal pieces 100 are four in number.
As shown in fig. 5 and 6, in particular, the adaptive adjusting assembly 80 further includes more than one second return spring 300, the stator 40 is connected to the inner wall of the housing 60 through the second return spring 300, and the second return spring 300 provides elastic restoring force for the stator 40, so that the stator 40 has a tendency to move away from the rotor 50. As shown in fig. 9 and 10, specifically, the stator 40 includes a sleeve portion 401, the sleeve portion 401 is fitted over the outer walls 110 of the plurality of centrifugal pieces 100, the outer walls 110 of the centrifugal pieces 100 have an inclined surface structure, and the outer walls 110 of the centrifugal pieces 100 are abutted against the inner wall of the sleeve portion 401 of the stator 40. As a preferred embodiment of the present invention, the inner wall of the sleeve portion 401 is provided with balls (not shown) such that the inner wall of the sleeve portion 401 is in contact with the outer wall 110 of the centrifugal member 100 through the balls. Therefore, when the centrifugal part 100 rotates along with the connecting rod 30, the friction force between the outer wall 110 of the centrifugal part 100 and the inner wall of the sleeve part 401 is greatly reduced, so that the service life of the permanent magnet wind driven generator 10 (shown in fig. 1) with torque gradient adjustment is prolonged, and the maintenance cost is reduced. In a preferred embodiment, the balls are distributed around the inner wall of the sleeve portion 401.
As shown in fig. 7, 8, 9 and 11, in particular, the torque gradient adjustment permanent magnet wind turbine 10 further includes a gradient adjustment assembly 90, and the gradient adjustment assembly 90 includes a gradient locking rod 400 and a third return spring 500. As shown in fig. 9, 10, 11 and 12, the link 30 is opened with a receiving guide groove 301, and the gradient lock lever 400 is disposed in the receiving guide groove 301 by a third return spring 500. The gradient lock bar 400 has an unlocking protrusion 410 and a plurality of gradient lock protrusions 420, and the third return spring 500 provides an elastic restoring force to the gradient lock bar 400, so that the unlocking protrusion 410 and the gradient lock protrusions 420 have a tendency to protrude from the accommodating guide groove 301. The unlocking protrusion 410 abuts against or separates from the inner wall of the centrifugal piece 100. The stator 40 further has a gradient lock 402, and the gradient lock 402 is engaged with or disengaged from the gradient lock protrusion 420.
As shown in fig. 10 and 12, in particular, the gradient locking protrusion 420 has a locking inclined guide surface 421 on a side close to the centrifugal member 100. When the stator 40 moves gradually closer to the rotor 50 along the connecting rod 30, the locking inclined guide surface 421 allows the gradient locking portions 402 of the stator 40 to smoothly step over the corresponding gradient locking protrusions 420 and to be in snap-fit with the corresponding gradient locking protrusions 420, so that the torque gradient-adjusted permanent magnet wind turbine 10 is relatively stably maintained at the corresponding gradient.
As shown in fig. 10 and 12, in the present embodiment, the number of the gradient locking protrusions 420 is three, and the gradient adjusting assembly 90 (shown in fig. 8) forms a three-stage adjusting gradient.
As shown in fig. 4, in the present embodiment, the number of the second return springs 300 is plural, and the plural second return springs 300 are distributed in a ring-shaped array centering on the central axis of the stator 40. This makes the elastic restoring force applied to the stator 40 uniform, so that the stator 40 slides smoothly along the connecting rod 30, that is, the coupling between the stator 40 and the rotor 50 is kept stable, thereby achieving the stability of the torque gradient-adjusted permanent magnet wind turbine 10. As a preferred embodiment of the present invention, the number of the gradient adjustment assemblies 90 is three, and the gradient adjustment assemblies 90 correspond to the centrifugal pieces 100 one by one, so as to further improve the stability of the torque gradient-adjusted permanent magnet wind turbine 10.
The operation principle of the torque gradient modulated permanent magnet wind turbine 10 is described below (please refer to fig. 1 to 12):
when the permanent magnet wind driven generator 10 with the torque gradient adjustment is in a static shutdown state, the fan blade 20 keeps static, and the connecting rod 30 also keeps static; at this time, the stator 40 is restored in a direction away from the rotor 50 by the elastic restoring force of the second restoring spring 300; i.e. when the stator 40 and the rotor 50 are not coupled; in this state, the fan blades 20, the connecting rods 30 and the rotor 50 do not need to overcome the attraction force between the rotor 50 and the permanent magnet from rest to rotation, so that the starting inertia of the torque gradient-regulated permanent magnet wind driven generator 10 is small, and the torque gradient-regulated permanent magnet wind driven generator 10 can be started under the condition of small wind power;
the torque gradient-regulated permanent magnet wind driven generator 10 of the invention does not need to additionally add a power source (such as a motor and the like) to regulate the torque, but utilizes wind as the power source, and realizes the self-adaptive self-tendency-free regulation of the torque by utilizing the rotation of the connecting rod 30 of the torque gradient-regulated permanent magnet wind driven generator 10 and combining the coupling state between the stator 40 and the rotor 50, thereby reducing the starting inertia, achieving the starting by small wind force and leading the use range of the wind force to be large;
it should be noted that, when the permanent magnet wind turbine 10 with torque gradient adjustment is in a stationary shutdown state, the centrifugal part 100 is gathered towards the central axis direction of the connecting rod 30 under the elastic restoring force of the first restoring spring 200 (as shown in fig. 5); meanwhile, the gradient locking rod 400 is completely accommodated in the accommodating guide groove 301 under the abutting action of the inner wall of the centrifugal piece 100;
when the wind power is gradually increased from zero, the fan blades 20 rotate at a gradually accelerated speed, and the fan blades 20 rotate and simultaneously drive the connecting rod 30 to rotate, so that the rotor 50 is indirectly driven to rotate; as the connecting rod 30 rotates at a gradually higher speed, the centrifugal force applied to the centrifugal member 100 is gradually increased, and thus the centrifugal member 100 is gradually dispersed in a direction away from the central axis of the connecting rod 30; in this process, the outer wall 110 of the centrifugal member 100 continuously applies force to the inner wall of the sleeve portion 401; because the outer wall 110 of the centrifugal piece 100 is an inclined surface structure, the sleeve portion 401 continuously moves downwards along the outer wall 110 of the centrifugal piece 100, so that the whole stator 40 moves towards the direction close to the rotor 50 along the connecting rod 30, and the stator 40 is gradually coupled with the rotor 50;
here, it should be particularly noted that the design of the inclined plane structure of the outer wall 110 of the centrifugal piece 100 is ingenious in that: the outer wall 110 of the centrifugal piece 100 is in contact with the inner wall of the sleeve part 401, so that the outer wall 110 of the centrifugal piece 100 has a component force on the inner wall of the sleeve part 401 along the axial direction of the connecting rod 30, the sleeve part 401 has a tendency of approaching to the rotor 50 along the connecting rod 30, and the stator 40 moves towards the rotor 50 along the connecting rod 30, and the stator 40 is coupled with the rotor 50; moreover, due to the inclined surface structure design of the outer wall 110 of the centrifugal part 100, the relative movement between the outer wall 110 of the centrifugal part 100 and the inner wall of the sleeve part 401 is smoother, so that the torque gradient adjustment is smoother, and the system stability of the torque gradient-adjusted permanent magnet wind driven generator 10 is ensured;
it should be noted that, as the centrifugal piece 100 gradually moves away from the connecting rod 30, the unlocking protrusion 410 and the gradient locking protrusion 420 of the gradient locking bar 400 gradually protrude out of the accommodating guide groove 301 under the elastic restoring force of the third return spring 500; meanwhile, as the stator 40 moves along the connecting rod 30 in a direction to approach the rotor 50, the gradient lock 402 of the stator 40 gradually approaches the gradient lock protrusion 420 and passes over the gradient lock protrusion 420 one by one;
it should be further explained that, without the cooperation of the gradient locking protrusion 420 and the gradient locking portion 402, the stator 40 will slide back and forth along the connecting rod 30 in response to the real-time variation of the wind force, i.e. the coupling degree between the stator 40 and the rotor 50 changes in real time in response to the real-time variation of the wind force; this makes the coupling between the stator 40 and the rotor 50 unstable, which affects the stability of the power generation of the torque gradient adjusted permanent magnet wind turbine 10; the matching of the gradient locking convex part 420 and the gradient locking part 402 is designed, so that the coupling degree of the stator 40 and the rotor 50 is continuously deepened along with the continuous increase of wind power occasionally until the stator and the rotor are completely coupled; in the process, the coupling between the stator 40 and the rotor 50 is not reduced due to the reduction of the wind force; in short, the degree of coupling of the stator 40 and the rotor 50 is unidirectionally deepened; namely, the gradient adjustment of the permanent magnet wind driven generator 10 for realizing the torque gradient adjustment;
when the wind power is reduced from big to small, the rotating speed of the fan blades 20 and the connecting rod 30 is reduced, and the centrifugal force applied to the centrifugal piece 100 is also reduced, so that the centrifugal piece 100 gathers in the direction close to the central axis of the connecting rod 30 (as shown in fig. 5); when the centrifugal piece 100 is close enough to the outer wall of the connecting rod 30, the inner wall of the centrifugal piece 100 presses the unlocking protrusion 410 of the gradient lock rod 400, so that the unlocking protrusion 410 and the gradient lock protrusion 420 of the gradient lock rod 400 are reset to the accommodating guide groove 301; it should be noted that, at this time, although the gradient locking protrusion 420 is reset to the accommodating guide slot 301, the gradient locking protrusion 420 still keeps the snap fit with the gradient locking portion 402; the permanent magnet wind driven generator 10 with the torque gradient adjusted keeps the original torque gradient; that is, the coupling state of the stator 40 and the rotor 50 is not changed;
only when the wind power is reduced to be sufficiently small, for example, the wind power is zero, at this time, the fan blades 20 and the connecting rod 30 stop rotating and keep still, and the centrifugal member 100 is gathered in the direction close to the central axis of the connecting rod 30 under the action of the elastic restoring force of the first return spring 200 (as shown in fig. 5); at the moment when the centrifugal piece 100 is completely restored to the outer wall of the link 30, the unlocking protrusion 410 and the gradient locking protrusion 420 of the gradient locking bar 400 are completely restored into the accommodation guide groove 301; when the unlocking protrusion 410 and the gradient locking protrusion 420 of the gradient locking bar 400 are completely reset into the receiving guide groove 301, the gradient locking protrusion 420 is instantaneously separated from the gradient locking portion 402, thereby instantaneously resetting the stator 40; that is, at the moment when the gradient locking protrusion 420 is separated from the gradient locking portion 402, the stator 40 is rapidly moved away from the rotor 50 by the elastic restoring force of the second return spring 300, so that the coupling state of the stator 40 and the rotor 50 is released, and the instantaneous return is realized; at this time, the permanent magnet wind driven generator 10 with the torque gradient adjusted is recovered to a shutdown state to wait for the next startup;
in short, after the torque gradient adjusting permanent magnet wind turbine 10 of the present invention is started, the coupling degree between the stator 40 and the rotor 50 is gradually increased in a gradient manner according to the increase of the wind power, so as to achieve the gradient adjustment of the torque; however, the torque reset of the torque gradient modulated permanent magnet wind turbine 10 of the present invention is instantaneous reset; that is, the coupling degree of the stator 40 and the rotor 50 is not gradually decreased or decreased due to the decrease of the wind power, but only when the wind power is decreased to a sufficient level, the stator 40 and the rotor 50 are instantaneously decoupled, and the torque is instantaneously reset, so that the torque gradient adjusted permanent magnet wind turbine 10 is instantaneously reset.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A torque gradient regulated permanent magnet wind generator comprising: the fan blade, the connecting rod, the stator, the rotor and the shell; the housing is provided with an accommodating cavity, and the stator and the rotor are accommodated in the accommodating cavity; the stator is provided with a plurality of permanent magnets, the rotor is connected with the connecting rod, and the connecting rod extends out of the housing from the accommodating cavity and then is connected with the fan blade;
the permanent magnet wind driven generator with the torque gradient adjustment function further comprises a self-adaptive adjustment component, and the self-adaptive adjustment component is accommodated in the accommodating cavity and is connected with the connecting rod; the adaptive adjusting component drives the stator to slide along the connecting rod so that the stator approaches to or departs from the rotor;
the self-adaptive adjusting assembly comprises a plurality of centrifugal pieces and a plurality of first return springs which correspond to the centrifugal pieces one by one, and the centrifugal pieces are connected with the outer wall of the connecting rod through the first return springs; the plurality of centrifugal pieces are distributed in an annular array by taking the central shaft of the connecting rod as the center;
the self-adaptive adjusting assembly further comprises more than one second return spring, the stator is connected with the inner wall of the shell through the second return spring, and the second return spring provides elastic restoring force for the stator, so that the stator has a tendency of being far away from the rotor;
the stator is provided with sleeve parts which are sleeved on the outer walls of a plurality of centrifugal pieces, and the outer walls of the centrifugal pieces are of inclined surface structures;
the torque gradient-regulated permanent magnet wind driven generator is characterized by further comprising a gradient regulation assembly, wherein the gradient regulation assembly comprises a gradient locking rod and a third return spring; the connecting rod is provided with a containing guide groove, and the gradient locking rod is arranged in the containing guide groove through the third return spring;
the gradient locking rod is provided with an unlocking convex part and a plurality of gradient locking convex parts, and the third return spring provides elastic restoring force for the gradient locking rod, so that the unlocking convex part and the gradient locking convex parts have the tendency of protruding out of the accommodating guide grooves;
the unlocking bulge part is abutted against or separated from the inner wall of the centrifugal piece; the stator is also provided with a gradient locking part which is clamped or separated with the gradient locking bulge.
2. The torque gradient modulating permanent magnet wind turbine according to claim 1, wherein a side of the gradient lock protrusion near the centrifugal member has a lock inclined guide surface.
3. The torque gradient modulated permanent magnet wind turbine according to claim 2, wherein the number of gradient locking protrusions is three.
4. The torque gradient modulated permanent magnet wind turbine according to claim 2, wherein the number of centrifugal members is four.
5. The torque gradient modulated permanent magnet wind turbine according to claim 2, wherein the second return spring is plural in number.
6. The torque gradient modulating permanent magnet wind turbine according to claim 5, wherein a plurality of the second return springs are distributed in an annular array centered on a central axis of the stator.
7. The torque gradient modulated permanent magnet wind generator according to claim 1, wherein the gradient modulation assembly is plural in number.
8. The torque gradient modulated permanent magnet wind turbine according to claim 7, wherein the number of gradient modulation assemblies is three, and the gradient modulation assemblies correspond to the centrifugal pieces one to one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011345412.0A CN112523952B (en) | 2020-11-26 | 2020-11-26 | Permanent magnet wind driven generator with torque gradient adjustment function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011345412.0A CN112523952B (en) | 2020-11-26 | 2020-11-26 | Permanent magnet wind driven generator with torque gradient adjustment function |
Publications (2)
| Publication Number | Publication Date |
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| CN112523952A CN112523952A (en) | 2021-03-19 |
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Denomination of invention: Permanent magnet wind turbine with torque gradient regulation Effective date of registration: 20220715 Granted publication date: 20220208 Pledgee: Agricultural Bank of China Limited Zhuji sub branch Pledgor: ZHUJI H&C HIEST MOTOR Co.,Ltd. Registration number: Y2022980010529 |
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