CN116896229A - Electromagnetic wind-induced vibration energy capturing device based on wing profile - Google Patents
Electromagnetic wind-induced vibration energy capturing device based on wing profile Download PDFInfo
- Publication number
- CN116896229A CN116896229A CN202310821979.8A CN202310821979A CN116896229A CN 116896229 A CN116896229 A CN 116896229A CN 202310821979 A CN202310821979 A CN 202310821979A CN 116896229 A CN116896229 A CN 116896229A
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- sliding
- guide post
- bearing
- sliding bearing
- airfoil
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- 239000000725 suspension Substances 0.000 claims abstract description 19
- 241001391944 Commicarpus scandens Species 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000007667 floating Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 238000005339 levitation Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1869—Linear generators; sectional generators
- H02K7/1876—Linear generators; sectional generators with reciprocating, linearly oscillating or vibrating parts
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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
- F03D5/00—Other wind motors
- F03D5/06—Other wind motors the wind-engaging parts swinging to-and-fro and not rotating
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
- H02K35/02—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving magnets and stationary coil systems
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- Engineering & Computer Science (AREA)
- Power Engineering (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)
- Aviation & Aerospace Engineering (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses an electromagnetic wind-induced vibration energy capturer based on an airfoil, which comprises an airfoil, a rotating shaft, a rear sliding guide post, a sliding connecting piece, a front sliding bearing, a fixed magnet, a suspension magnet, a rotating bearing, a rear sliding bearing, a front sliding guide post, a wire coil and a sleeve seat; the wing section is symmetrically arranged at the upper part and the lower part, and the hinge connection with the sliding connecting piece is realized through the rotating shaft and the two rotating bearings; the left and right two suspension magnets are symmetrically arranged and mounted at two ends of the sliding connecting piece; the sliding connector is embedded with a front sliding bearing and a rear sliding bearing; the front sliding bearing and the rear sliding bearing are sleeved on the front sliding guide post and the rear sliding guide post respectively; the rear sliding guide post and the front sliding guide post are fixedly arranged on two sleeve seats which are symmetrically arranged; the fixed magnet and the wire coil are mounted on the sleeve mount and arranged coaxially. The invention solves the problem that the structure of the traditional flutter energy capture device is easy to break and fatigue at high wind speed, is easy to realize multi-wind energy capture, and can effectively improve the energy capture efficiency and widen the working wind speed range of the energy capture device.
Description
Technical Field
The invention relates to an electromagnetic wind-induced vibration energy capture device based on an airfoil, and belongs to the technical field of energy capture.
Background
With the rapid development of the internet of things technology and the microsensor technology, various low-power electronic devices have been widely applied to various fields of the current society, including environmental monitoring, aerospace, agriculture, medical treatment, and the like. However, microelectronic devices are currently powered by conventional chemical batteries, and this way of power has problems such as troublesome replacement, high cost, environmental pollution, and limited effectiveness in extreme environments (e.g., high temperature, low temperature, etc.).
With the increasing demand for sustainable, efficient and environmentally friendly energy supply, researchers are looking for alternative energy supply to traditional chemical batteries to overcome the limitations of their use. Emerging energy technologies include solar technology, thermal energy capture, and vibrational energy capture, among others. Wind energy and vibration energy are widely available as energy sources in nature, and have great potential in energy capture. Wind energy and vibration energy are converted into electric energy to be stored and used by utilizing the principles of positive piezoelectric effect, electromagnetic induction law, triboelectricity and the like, and the wind energy and vibration energy conversion device has become one of effective energy capturing ways.
The flutter type energy capturing device based on the wing profile has the characteristics of large vibration amplitude and suitability for high wind speed environments. However, most of the current flutter energy harvester based on an airfoil structure is a piezoelectric cantilever beam structure. Although the piezoelectric type vibration energy harvester has the advantage of electromagnetic interference resistance, the piezoelectric type vibration energy harvester has low efficiency, is extremely easy to damage at high wind speed and generates the problem of fatigue damage. In addition, the energy harvester is only suitable for unidirectional wind energy harvesting, so that the traditional flutter energy harvester based on the wing profile has poor environmental adaptability and is difficult to be widely applied in the actual environment.
Disclosure of Invention
The invention aims to provide an electromagnetic wind-induced vibration energy capture device based on an airfoil so as to improve the energy capture efficiency of the flutter energy capture device based on the airfoil, realize multi-wind-direction wind energy capture and promote practical application.
The technical scheme of the invention is as follows:
an electromagnetic wind-induced vibration energy capturer based on an airfoil, characterized in that: the device comprises an airfoil, a rotating shaft, a rear sliding guide post, a sliding connector, a rear sliding bearing, a fixed magnet, a suspension magnet, a rotating bearing, a front sliding guide post, a wire coil and a sleeve seat; the wing profile is symmetrically arranged at the upper part and the lower part, and the hinge connection with the sliding connecting piece is realized through the rotating shaft and the two rotating bearings; the left and right two suspension magnets are symmetrically arranged and mounted at two ends of the sliding connecting piece; the sliding connecting piece is embedded with a rear sliding bearing and a front sliding bearing; the rear sliding bearing and the front sliding bearing are sleeved on the rear sliding guide post and the front sliding guide post respectively; the rear sliding guide post and the front sliding guide post are fixedly arranged on two sleeve seats which are symmetrically arranged; the fixed magnet and the wire coil are mounted on the sleeve seat and are coaxially arranged.
Further: the sliding connector has cylinder bosses on two sides of its front end, sliding bearing slot in the middle of its front end, sliding bearing hole in its back end, and rotating bearing hole in the middle.
Further: the two rotating bearings are arranged and installed on the rotating bearing hole in the center part of the sliding connecting piece in an up-down symmetrical way; the inner ring of the rotating bearing is in interference fit with the rotating shaft; the rotating shaft is fixedly connected with the two wing sections.
Further: the rear sliding bearing and the front sliding bearing are respectively fixedly embedded in a sliding bearing hole and a sliding bearing groove of the central part of the sliding connecting piece.
Further: the sleeve seat is provided with a cylindrical coil sleeve, a cylindrical outer guide column groove and an inner guide column groove; the inner guide post groove is coaxial with the coil sleeve; the rear sliding guide post and the front sliding guide post are respectively in interference fit with the outer guide post groove and the inner guide post groove; the wire coil is mounted on the coil sleeve without relative movement therebetween.
Further: the suspension magnet and the fixed magnet are annular permanent magnets, and the fixed magnet is sleeved between an inner guide post groove on the sleeve seat and the coil sleeve.
Further: the inner ring of the suspension magnet is in interference fit with the cylindrical boss of the sliding connecting piece, and relative movement does not exist.
Further: the magnetic pole directions of the two side suspension magnets and the two side fixed magnets are opposite, and the generated repulsive force provides restoring force for sliding (sinking and floating movement) of the sliding connector and the wing profile.
The principle is as follows: the hinge form between the wing profile and the sliding connector provides the wing profile with the freedom degree of rotation, namely pitching movement, and the sliding connector and the wing profile together along the sliding guide post and the sliding guide post provide the wing profile with the freedom degree of sliding, namely sinking and floating; the energy harvester is arranged in an environment with a wind field, airflow acts on the wing profile, when the wind speed reaches a critical wind speed, the system flutters, the wing profile is subjected to time-varying aerodynamic force and aerodynamic moment, and pitching motion around a rotating shaft and sinking and floating motion along a rear sliding guide post and a front sliding guide post are generated; the wing profile drives the sliding connector and the suspension magnet to vibrate in the wire coil so as to realize conversion of wind energy into electric energy.
The invention has the characteristics and advantages that: by using an electromagnetic energy capture mechanism, the flutter energy conversion efficiency can be improved, the magnetic repulsive force provides restoring force for pitching motion, so that the problems of large deformation damage, fatigue and the like are avoided, and the device can work in a wider wind speed range, which is difficult to achieve by the existing flutter energy capture structure. Meanwhile, the energy capture device can still work when the ambient wind direction is not perpendicular to the sinking and floating movement direction, and multi-directional wind energy capture is realized.
Drawings
FIG. 1 is a schematic three-dimensional structure of an airfoil-based electromagnetic wind-induced vibration energy harvester according to the present invention.
Fig. 2 is a front cross-sectional view (up) and a top view (down) of the sleeve mount structure of the present invention.
Fig. 3 is a schematic three-dimensional structure of the sliding connection of the present invention.
In the figure: 1-airfoil, 2-spindle, 3-rear slide guide post, 4-slide connector, 5-rear slide bearing, 6-fixed magnet, 7-suspension magnet, 8-rotation bearing, 9-front slide bearing, 10-front slide guide post, 11-wire coil, 12-sleeve seat, 13-coil sleeve, 14-inner guide post slot, 15-outer guide post slot, 16-cylinder boss, 17-slide bearing hole, 18-rotation bearing hole, 19-slide bearing slot.
Detailed description of the preferred embodiments
The technical scheme of the invention is clearly and thoroughly described below with reference to the drawings in the embodiment of the invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. Embodiments of the present invention are intended to be within the scope of the present invention as defined by the appended claims.
Example 1
As shown in fig. 1 to 3, the present embodiment provides an electromagnetic wind-induced vibration energy capturing device based on an airfoil, which comprises an airfoil 1, a rotating shaft 2, a rear sliding guide post 3, a sliding connector 4, a rear sliding bearing 5, a fixed magnet 6, a suspension magnet 7, a rotating bearing 8, a front sliding bearing 9, a front sliding guide post 10, a wire coil 11 and a sleeve seat 12; wherein, two wing sections 1 are symmetrically arranged up and down and fixedly connected with a rotating shaft 2; the rotating shaft 2 is hinged with the sliding connecting piece 4 through two rotating bearings 8 which are arranged symmetrically up and down; two cylinder bosses of the sliding connecting piece 4 are respectively provided with a suspension magnet 7, and the suspension magnet 7 is fixedly connected with the sliding connecting piece 4 without relative displacement; the sliding connector 4 is in sliding connection with the rear sliding guide post 3 and the front sliding guide post 10 through a rear sliding bearing 5 and a front sliding bearing 9; the rear sliding guide post 3 and the front sliding guide post 10 are respectively arranged in an outer guide post groove 15 and an inner guide post groove 14 on the sleeve seat 12; the wire coil 11 is sleeved on a coil sleeve 13 on the sleeve seat 12; the sleeve mount 12 is fixedly mounted in an environment having a wind field.
More specifically: the sliding connector 4 has a sliding bearing hole 17 in the rear of the central part and a sliding bearing groove 19 in the front, and the rear sliding bearing 5 and the front sliding bearing 9 are respectively embedded and fixedly connected with the sliding bearing hole.
More specifically: the rear slide bearing 5 and the front slide bearing 9 are respectively sleeved on the rear slide guide post 3 and the front slide guide post 10 to limit the rotation freedom degree of the slide connector 4, and only the sliding freedom degree is reserved.
More specifically: the sliding connection piece 4 is divided into a rotary bearing hole 18 at the center part, two rotary bearings 8 are symmetrically arranged on the upper surface and the lower surface, the outer ring of each rotary bearing 8 is in interference fit with the rotary bearing hole 18, and the inner ring of each rotary bearing 8 is in interference fit with the rotary shaft 2, so that the bearing of the upper symmetrical load and the lower symmetrical load in the vibration process is more stable.
More specifically: the suspension magnets and the fixed magnets are annular permanent magnets, the two symmetrically arranged fixed magnets 6 are fixedly arranged in the coil sleeves 13 of the two symmetrically arranged sleeve seats 12, repulsive force is generated by the two symmetrically arranged fixed magnets and the magnetizing directions of the two suspension magnets 7 are opposite to each other, and nonlinear restoring force is provided for sliding of the sliding connecting piece 4 and the wing profile.
More specifically: the two symmetrically arranged wire coils are respectively arranged on the coil sleeves 13 on the two sleeve seats 12 and coaxial with the two levitation magnets 7, when the levitation magnets 7 slide along with the sliding connecting pieces 4, the magnetic flux in the wire coils 13 is changed, and according to the law of electromagnetic induction, the wire coils 13 generate induced current in a loop.
In this embodiment, the airflow acts on the airfoil 1, when the wind speed reaches the critical wind speed, the system flutters, and the airfoil 1 is subjected to time-varying aerodynamic force and aerodynamic moment to generate pitching motion (rotation) around the rotating shaft 2 and sinking and floating motion (sliding) along the rear sliding guide post 3 and the front sliding guide post 10; the wing profile 1 will drive the vibration of the sliding connection 4 and the levitation magnet 7 in the wire coil 13 to achieve the conversion of wind energy into electrical energy.
The invention provides an electromagnetic wind-induced vibration energy capturer based on an airfoil, which adopts an electromagnetic energy conversion mechanism, has high conversion efficiency, reduces the material damage condition of a magnetic suspension vibration form under higher wind speed, can capture energy under a plurality of wind directions, and has strong environmental adaptability.
While the foregoing description is only illustrative of the present invention and is not intended to limit the invention, it will be appreciated by those skilled in the art that the embodiments, scope and materials of the invention may be modified and any modifications, equivalents, improvements or the like within the spirit and scope of the invention.
Claims (7)
1. Electromagnetic wind induced vibration energy capture ware based on wing section, its characterized in that: the device comprises an airfoil (1), a rotating shaft (2), a rear sliding guide post (3), a sliding connector (4), a rear sliding bearing (5), a fixed magnet (6), a suspension magnet (7), a rotating bearing (8), a front sliding bearing (9), a front sliding guide post (10), a wire coil (11) and a sleeve seat (12); the wing section (1) is symmetrically arranged at the upper part and the lower part, and is hinged with the sliding connecting piece (4) through the rotating shaft (2) and the two rotating bearings (8); the left and right two suspension magnets (7) are symmetrically arranged and fixedly arranged on cylindrical bosses (16) at two ends of the sliding connecting piece (4); the sliding connecting piece (4) is internally embedded with a rear sliding bearing (5) and a front sliding bearing (9); the rear sliding bearing (5) and the front sliding bearing (9) are respectively sleeved on the rear sliding guide post (3) and the front sliding guide post (10); the rear sliding guide post (3) and the front sliding guide post (10) are fixedly arranged on two symmetrically arranged sleeve seats (12); the fixed magnet (6) and the wire coil (11) are mounted on a sleeve seat (12) and are coaxially arranged.
2. The airfoil-based electromagnetic wind-induced vibration energy harvester of claim 1, wherein: the sliding connecting piece (4) is provided with cylinder bosses (16) at two sides of the front end, a sliding bearing groove (19) is arranged at the middle part of the front end, a sliding bearing hole (17) is arranged at the rear end, and a rotating bearing hole (18) is arranged at the middle part.
3. The airfoil-based electromagnetic wind-induced vibration energy harvester of claim 1, wherein: the two rotating bearings (8) are symmetrically arranged up and down and are arranged on a rotating bearing (18) hole in the center part of the sliding connecting piece (4); an inner ring of the rotating bearing (8) is in interference fit with the rotating shaft (2); the rotating shaft (2) is fixedly connected with the two wing profiles (1).
4. The airfoil-based electromagnetic wind-induced vibration energy harvester of claim 1, wherein: the rear sliding bearing (5) and the front sliding bearing (9) are respectively fixed in a sliding bearing hole (17) and a sliding bearing groove (19) which are embedded in the central part of the sliding connecting piece (4).
5. The airfoil-based electromagnetic wind-induced vibration energy harvester of claim 1, wherein: the sleeve seat (12) is provided with a cylindrical coil sleeve (13), a cylindrical outer guide column groove (15) and an inner guide column groove (14); the inner guide post groove (14) is coaxial with the coil sleeve (13); the rear sliding guide post (3) and the front sliding guide post (10) are respectively in interference fit with the outer guide post groove (15) and the inner guide post groove (14); the wire coil (11) is arranged on the coil sleeve (13) and does not move relatively.
6. The airfoil-based electromagnetic wind-induced vibration energy harvester of claim 1, wherein: the suspension magnet (7) and the fixed magnet (6) are annular permanent magnets, and the fixed magnet (6) is sleeved between an inner guide pillar groove (14) on the sleeve seat (12) and the coil sleeve (13).
7. The airfoil-based electromagnetic wind-induced vibration energy harvester of claim 1, wherein: the two sides of the suspension magnet (7) are opposite to the magnetic pole direction of the fixed magnet (6) opposite to the two ends respectively, and generate repulsive force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310821979.8A CN116896229A (en) | 2023-07-05 | 2023-07-05 | Electromagnetic wind-induced vibration energy capturing device based on wing profile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310821979.8A CN116896229A (en) | 2023-07-05 | 2023-07-05 | Electromagnetic wind-induced vibration energy capturing device based on wing profile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116896229A true CN116896229A (en) | 2023-10-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310821979.8A Pending CN116896229A (en) | 2023-07-05 | 2023-07-05 | Electromagnetic wind-induced vibration energy capturing device based on wing profile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116896229A (en) |
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2023
- 2023-07-05 CN CN202310821979.8A patent/CN116896229A/en active Pending
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