CN205811835U - Permanent magnet suspension wing panel aeroelastic vibration TRT - Google Patents

Abstract

The utility model proposes an aeroelastic vibration power generation device for a permanent magnetic levitation wing section, which includes two support forms: a double support type on both sides and a single support type in the middle. The permanent magnetic levitation supports the aeroelastic vibration of the wing section to generate electricity, cancels the mechanical elastic support element in the design of the existing wing section aeroelastic vibration power generation device, and fundamentally avoids the fatigue problem of the wing section support element. The permanent magnetic levitation support adopts linear bearings as the guiding device for the ups and downs of the support rod and the wing section, and the suspension ring permanent magnet is fixed on the support rod, which avoids the surface contact between the suspension ring permanent magnet and the cylindrical sleeve and reduces the permanent The friction force of the magnetic levitation support. The permanent magnetic levitation support has nonlinear stiffness characteristics, and the nonlinear stiffness characteristics of the suspended ring permanent magnets can be changed by adjusting the distance between the fixed ring permanent magnets at both ends of the cylindrical sleeve, so that the wings can flutter at low wind speeds.

Description

Aeroelastic vibration power generation device for permanent maglev wing section

technical field

The utility model relates to the field of wind-induced vibration energy collection, in particular to an aeroelastic vibration power generation device for a permanent magnetic levitation wing section, which converts wind energy into electric energy by using permanent magnetic levitation, aeroelastic vibration phenomenon and electromagnetic induction principle.

Background technique

The existing aeroelastic vibration energy harvesting technology mainly relies on the aeroelastic vibration phenomenon of the elastically supported wing section in the airflow, including flutter, vortex induced vibration, galloping, etc., first converts wind energy into mechanical vibration energy, and then converts it through piezoelectric energy Or the electromagnetic induction method converts mechanical vibration energy into electrical energy to achieve the purpose of power generation. In the existing aeroelastic vibration energy harvesting technology, mechanical springs or cantilever beams are generally used as the elastic support structure of the wing section to provide the heave or pitch stiffness of the wing section.

However, the mechanical spring or cantilever beam element that provides the ups and downs stiffness of the wing section is prone to fatigue problems during the long-term vibration, especially the flutter power generation process, which seriously affects the service life and reliability of the aeroelastic vibration power generation device. The purpose of the utility model It is to design a wing section aeroelastic vibration power generation device that cancels the elastic mechanical support element, so as to completely avoid the fatigue problem.

Contents of the invention

In order to solve the existing technology, the mechanical spring or cantilever beam element that provides the ups and downs stiffness of the wing section is prone to fatigue problems during the long-term vibration, especially the flutter power generation process, which seriously affects the service life and reliability of the aeroelastic vibration power generation device To solve the technical problems, this utility model proposes an aeroelastic vibration power generation device for permanent magnetic levitation wings, including two support forms: double support on both sides (Figure 1) and single support in the middle (Figure 6). The magnetic levitation support adopts the energy conversion method of electromagnetic induction, and uses the aeroelastic vibration of the wing section of the permanent maglev support to generate power, cancels the mechanical elastic support element in the design of the existing wing section aeroelastic vibration power generation device, and fundamentally avoids Fatigue problems of support elements.

The technical scheme of the utility model is:

The aeroelastic vibration power generation device for a permanent maglev wing section includes a wing section (1), two wing section support structures (3) and a base (9), and the bottom of the wing section support structure (3) is fixed on the base ( 9) on;

It is characterized by:

The two wing section support structures (3) are distributed at both ends of the wing section (1), and the two ends of the rigid axis (2) of the wing section (1) are respectively connected to the ends of the support rods (12) of one wing section support structure (3). Rotationally connected, the wing section (1) can freely rotate around the axis of the rigid shaft;

The wing segment support structure (3) includes a support rod (12) and a cylindrical sleeve (5); linear bearings (10) are fixedly installed at both ends of the cylindrical sleeve (5); the axial direction of the linear bearings (10) at both ends The inner sides are respectively fixed with fixed ring-shaped permanent magnets; the support rod (12) passes through the cylindrical sleeve (5), and through the cooperation of the linear bearing (10) and the cylindrical sleeve (5), the gap between the ring-shaped permanent magnet and the support rod (12) is fixed Cooperate; the middle part of the support rod (12) is fixed with a clamping bushing (11), and a suspended annular permanent magnet (4) is fixed on the clamping bushing (11); the outer surface of the cylindrical sleeve (5) is wound with a coil winding (14) , the axial range of the coil winding (14) covers the axial gap between the fixed annular permanent magnet and the suspended annular permanent magnet (4); the lead wires at both ends of the coil winding (14) are connected to an external load;

The fixed annular permanent magnet and the suspended annular permanent magnet (4) adopt axial magnetization, and the end of the suspended annular permanent magnet (4) and the end of the adjacent fixed annular permanent magnet are magnetic poles of the same sex;

The support rod (12), cylindrical sleeve (5), clamping bushing (11) and linear bearing (10) are made of non-magnetic materials.

The aeroelastic vibration power generation device for a permanent maglev wing section comprises a wing section (1), a wing section support structure (3) and a base (9), and the bottom of the wing section support structure (3) is fixed on the base (9) superior;

It is characterized by:

The wing section support structure (3) is located in the middle of the wing section (1); there is a gap in the middle of the wing section (1), and there is a rigid shaft (2) in the gap, and the rigid shaft (2) and the support rod of the wing section support structure (3) (12) The ends are rotationally connected, and the wing section (1) can freely rotate around the axis of the rigid shaft;

The wing segment support structure (3) includes a support rod (12) and a cylindrical sleeve (5); linear bearings (10) are fixedly installed at both ends of the cylindrical sleeve (5); the axial direction of the linear bearings (10) at both ends The inner sides are respectively fixed with fixed ring-shaped permanent magnets; the support rod (12) passes through the cylindrical sleeve (5), and through the cooperation of the linear bearing (10) and the cylindrical sleeve (5), the gap between the ring-shaped permanent magnet and the support rod (12) is fixed Cooperate; the middle part of the support rod (12) is fixed with a clamping bushing (11), and a suspended annular permanent magnet (4) is fixed on the clamping bushing (11); the outer surface of the cylindrical sleeve (5) is wound with a coil winding (14) , the axial range of the coil winding (14) covers the axial gap between the fixed annular permanent magnet and the suspended annular permanent magnet (4); the lead wires at both ends of the coil winding (14) are connected to an external load;

The fixed annular permanent magnet and the suspended annular permanent magnet (4) adopt axial magnetization, and the end of the suspended annular permanent magnet (4) and the end of the adjacent fixed annular permanent magnet are magnetic poles of the same sex;

The support rod (12), cylindrical sleeve (5), clamping bushing (11) and linear bearing (10) are made of non-magnetic materials.

A further preferred solution, the aeroelastic vibration power generation device for permanent maglev wings, is characterized in that: the axial distance between the fixed annular permanent magnets at both ends of the cylindrical sleeve (5) is adjustable.

A further preferred solution, the aeroelastic vibration power generation device for permanent maglev wings, is characterized in that: the suspended annular permanent magnet (4) is not in contact with the inner wall of the cylindrical sleeve (5).

Beneficial effect

The aeroelastic vibration power generation device of the permanent magnetic levitation wing section proposed by the utility model adopts the permanent magnetic suspension support, cancels the mechanical elastic support element in the design of the existing wing section aeroelastic vibration power generation device, and fundamentally avoids the fatigue failure of the elastic support structure question.

The permanent magnetic levitation support adopts linear bearings as the guiding device for the support rod to cooperate with the wing section to do the ups and downs. The friction force is reduced by rolling friction; The surface contact of the sleeve further reduces the frictional force of the permanent magnetic suspension support.

The permanent magnetic levitation support has nonlinear stiffness characteristics, and the stiffness is adjustable. The nonlinear stiffness characteristics of the suspended ring permanent magnets can be changed by adjusting the distance between the fixed ring permanent magnets at both ends of the cylindrical sleeve, so that the wing section can operate at a lower wind speed. Chatter motion occurs.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

Figure 1: Schematic diagram of the aeroelastic vibration power generation device with double supports on both sides of the permanent maglev wing section;

Figure 2: The front view of the double-supported permanent maglev wing section aeroelastic vibration power generation device;

Figure 3: C-C sectional view of the permanent maglev support;

Figure 4: Schematic diagram of the first permanent magnetic levitation support magnetic pole configuration;

Figure 5: Schematic diagram of the second permanent maglev support pole configuration;

Figure 6: Schematic diagram of the aeroelastic vibration power generation device of the middle single-support permanent maglev wing section;

Figure 7: The middle single-support permanent maglev wing section;

Figure 8: Schematic diagram of an embodiment with double supports on both sides (the foundation is at the bottom and the wing section is at the top);

Figure 9: Schematic diagram of an embodiment with double supports on both sides (the foundation is on the top, and the wing section is on the bottom);

Figure 10: Schematic diagram of a double-supported embodiment on both sides (the foundation is on the side of the wing section);

Figure 11: Schematic diagram of the embodiment of the middle single support type (the foundation is at the bottom, and the wing section is at the top);

Figure 12: Schematic diagram of the embodiment of the middle single support type (the foundation is on the top, and the wing section is on the bottom);

Labels: 1. Wing section; 2. Rigid shaft; 3. Wing section support structure; 4. Suspended annular permanent magnet; 5. Cylindrical sleeve; 6. First fixed annular permanent magnet; 7. Second fixed annular permanent magnet; 8. Connecting flange; 9. Base; 10. Linear bearing; 11. Positioning sleeve; 12. Support rod; 13. Rotary joint; 14. Coil winding; 15. Lead wire; 16. External resistor.

detailed description

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", Orientation indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. Or the positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be configured in a specific orientation, and operation, and therefore cannot be construed as a limitation of the utility model.

In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

The utility model aims at providing mechanical springs or cantilever beam components with ups and downs rigidity in the prior art. In the long-term vibration, especially in the process of flutter power generation, fatigue problems are prone to occur, which seriously affects the service life of the aeroelastic vibration power generation device and To solve the technical problem of reliability, two types of aeroelastic vibration power generation devices for permanent maglev wings were designed: double-supported on both sides (Fig. 1) and single-supported in the middle (Fig. 6). The wings are supported by permanent maglev. The energy conversion method of electromagnetic induction uses the aeroelastic vibration of the permanent magnetic levitation support wing to generate electricity, cancels the mechanical elastic support element in the design of the existing wing section aeroelastic vibration power generation device, and fundamentally avoids the fatigue of the wing section support element question.

For the double-supported type on both sides, as shown in Figure 1, the wing section 1 has two degrees of freedom, including ups and downs linear motion and pitch torsion motion around the rigid axis 2, and wing section support structures are used at both ends of the wing section rigid axis 2 3 to provide ups and downs stiffness, the wing section is unsupported in pitch freedom, allowing the wing section to make free pitching motion around its rigid axis. With this design method, all mechanical elastic support elements are canceled, and the support structure of the wing section supported by permanent magnetic levitation is used. The stiffness of the wing section support structure is adjustable, so that the wing section can flutter at lower wind speeds. .

For the middle single-support type, as shown in Fig. 6, the wing section 1 has two degrees of freedom of ups and downs linear motion and pitch torsion motion around the rigid axis 2, slots are made on the leading edge in the middle of the wing section, and the rigid axis 2 in the groove adopts The support structure 3 of a single wing section provides the ups and downs stiffness, and the wing section is unsupported in the degree of freedom of pitching, thereby allowing the wing section to make free pitching motion around its rigid axis. With this design method, all mechanical elastic support elements are canceled, and the support structure of the wing section supported by permanent magnetic levitation is used. The stiffness of the wing section support structure is adjustable, so that the wing section can flutter at lower wind speeds. .

The double-supported wing sections on both sides and the single-supported wing section in the middle are only different in support position and support number, and the supported degrees of freedom and the wing section support structure of the permanent magnetic levitation support method used are exactly the same.

The wing segment support structure 3 in the permanent magnetic levitation support mode is shown in FIGS. 3 to 5 . The wing support structure 3 includes a support rod 12 and a cylindrical sleeve 5; linear bearings 10 are fixedly installed at both ends of the cylindrical sleeve 5; Through the cylindrical sleeve 5, and through the cooperation of the linear bearing 10 with the cylindrical sleeve 5, the fixed annular permanent magnet and the support rod 12 are in clearance fit; The permanent magnet 4; the outer surface of the cylindrical sleeve 5 is wound with a coil winding 14, and the axial range of the coil winding 14 covers the axial gap between the fixed annular permanent magnet and the floating annular permanent magnet 4; the lead wires at both ends of the coil winding 14 are connected to the external load; the fixed The annular permanent magnet and the suspended annular permanent magnet 4 adopt axial magnetization, and the ends of the suspended annular permanent magnet 4 and the ends of the adjacent fixed annular permanent magnet are the same magnetic poles; the support rod 12, the cylindrical sleeve 5, the locking sleeve 11, The linear bearing 10 uses a non-magnetic material.

The wing section support structure design of the permanent magnetic levitation support method utilizes the permanent magnetic levitation principle of homopolar repulsion, so that a set of suspended annular permanent magnets 4 is suspended between the fixed annular permanent magnets at both ends of the cylindrical sleeve 5, and three sets of annular permanent magnets 4 , 6, and 7 are all axially magnetized, and the magnetic pole directions of the annular permanent magnets 4, 6, and 7 are respectively N-S-S-N-N-S from top to bottom (Figure 4), or S-N- N-S-S-N (Figure 5), the cylindrical sleeve 5 is connected to the base 9 through the flange 8, and the distance between the fixed permanent magnets at both ends of the cylindrical sleeve can be changed by adjusting the height of the linear bearing 10, thereby The nonlinear stiffness characteristics of the wing support structure 3 are adjusted. Use the clamping bushing 11 to fix the suspended annular permanent magnet 4 on the middle section of the support rod 12, and the top of the support rod 12 is connected to the rigid axis of the wing section through the rotary joint 13, thereby allowing the wing section to rotate freely around the rigid axis, It can also realize the permanent magnetic levitation support for the degree of freedom of the ups and downs of the rigid axis of the wing section. The linear bearing 10 acts as a guide for the ups and downs of the support rod 12 .

Due to the suspension support of permanent magnets, the main components that are in direct contact with or close to the permanent magnets should be made of non-magnetic materials.

A certain number of turns and layers of enamelled copper wires are wound on the outer surface of the cylindrical sleeve 5 to form a coil winding 14. Under a certain wind speed, the wing section undergoes aeroelastic vibration, thereby driving the suspended annular permanent magnet 4 through the support rod 12 to generate non-magnetic vibration. Linear vibration, according to Faraday's law of electromagnetic induction, the magnetic flux in the coil winding will change and induce electromotive force, and the lead wires 15 at both ends of the coil winding 14 and the external resistor 16 form a path to output electric energy.

The wing section support structure adopted by the permanent magnetic levitation support method has two functions at the same time. On the one hand, it replaces the mechanical spring support of the existing wing section, and fundamentally avoids the fatigue failure of the elastic support structure. On the other hand, it directly It forms an electromagnetic induction transducer with the coil winding, which is used for aeroelastic vibration power generation.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be construed as limitations of the present invention. The above-mentioned embodiments can be changed, modified, replaced and modified within the scope of the present utility model under the principle and purpose.

Claims (4)

1. a permanent magnet suspension wing panel aeroelastic vibration TRT, including wing panel (1), two wing panel supporting constructions (3) and Pedestal (9), wing panel supporting construction (3) bottom is fixed on pedestal (9)；

It is characterized in that:

Two wing panel supporting constructions (3) are distributed in wing panel (1) two ends, and firm axle (2) two ends of wing panel (1) are propped up with a wing panel respectively Support bar (12) end of support structure (3) is rotationally connected, and wing panel (1) can be freely rotatable around firm axle axis；

Described wing panel supporting construction (3) includes support bar (12) and cylindrical sleeves (5)；Cylindrical sleeves (5) two ends are installed with Linear bearing (10)；The axially inner side of the linear bearing (10) at two ends is installed with stationary annular permanent magnet respectively；Support bar (12) through cylindrical sleeves (5), and coordinated by linear bearing (10) cylindrical sleeves (5), stationary annular permanent magnet and support bar (12) matched in clearance；Support bar (12) is fixedly arranged in the middle of screens axle sleeve (11), and screens axle sleeve is fixed with suspension annular forever on (11) Magnet (4)；Cylindrical sleeves (5) outer surface is wound around coil windings (14), and coil windings (14) axial range covers stationary annular forever Axial gap between magnet and suspension annular permanent magnet (4)；Coil windings (14) two ends lead-in wire is connected with external loading；

Described stationary annular permanent magnet and suspension annular permanent magnet (4) use axial charging, suspension annular permanent magnet (4) end with Adjacent stationary annular permanent magnet end is like pole；

Described support bar (12), cylindrical sleeves (5), screens axle sleeve (11), linear bearing (10) use nonmagnetic substance.

2. a permanent magnet suspension wing panel aeroelastic vibration TRT, including wing panel (1), wing panel supporting construction (3) and pedestal (9), wing panel supporting construction (3) bottom is fixed on pedestal (9)；

It is characterized in that:

Wing panel supporting construction (3) is in wing panel (1) middle part；Wing panel (1) middle part has breach, has firm axle (2), firm axle in breach (2) support bar (12) end with wing panel supporting construction (3) is rotationally connected, and wing panel (1) can be freely rotatable around firm axle axis；

Described wing panel supporting construction (3) includes support bar (12) and cylindrical sleeves (5)；Cylindrical sleeves (5) two ends are installed with Linear bearing (10)；The axially inner side of the linear bearing (10) at two ends is installed with stationary annular permanent magnet respectively；Support bar (12) through cylindrical sleeves (5), and coordinated by linear bearing (10) cylindrical sleeves (5), stationary annular permanent magnet and support bar (12) matched in clearance；Support bar (12) is fixedly arranged in the middle of screens axle sleeve (11), and screens axle sleeve is fixed with suspension annular forever on (11) Magnet (4)；Cylindrical sleeves (5) outer surface is wound around coil windings (14), and coil windings (14) axial range covers stationary annular forever Axial gap between magnet and suspension annular permanent magnet (4)；Coil windings (14) two ends lead-in wire is connected with external loading；

Described stationary annular permanent magnet and suspension annular permanent magnet (4) use axial charging, suspension annular permanent magnet (4) end with Adjacent stationary annular permanent magnet end is like pole；

Described support bar (12), cylindrical sleeves (5), screens axle sleeve (11), linear bearing (10) use nonmagnetic substance.

A kind of permanent magnet suspension wing panel aeroelastic vibration TRT the most according to claim 1 or claim 2, it is characterised in that: circle The axial spacing of the stationary annular permanent magnet at column sleeve cylinder (5) two ends is adjustable.

A kind of permanent magnet suspension wing panel aeroelastic vibration TRT the most according to claim 1 or claim 2, it is characterised in that: outstanding Floating annular permanent magnet (4) does not contacts with cylindrical sleeves (5) medial wall.