CN210167943U

CN210167943U - Magnetic liquid plane multi-frequency vibration energy collector

Info

Publication number: CN210167943U
Application number: CN201821964261.5U
Authority: CN
Inventors: 王四棋; 李德才; 陈铎; 唐宇
Original assignee: Beijing Jiaotong University
Current assignee: Beijing Jiaotong University
Priority date: 2018-11-27
Filing date: 2018-11-27
Publication date: 2020-03-20
Anticipated expiration: 2028-11-27

Abstract

The utility model relates to a magnetic liquid plane multifrequency vibration energy collector, the system of shaking of picking up that this collector chooseed for use has magnetic liquid's column permanent magnet and is located the outside magnetic material of casing to constitute by both ends absorption, the column permanent magnet has magnetic liquid because of the absorption and suspends in the casing, has the vibration response performance of higher sensitivity as inertial mass piece, with the appeal between permanent magnet and magnetic material as the restoring force, the distance difference makes its appeal different between permanent magnet and magnetic material, the vibration frequency of corresponding permanent magnet is different. Under the action of external vibration, the cylindrical permanent magnet responds to the external vibration to perform plane motion, the magnetic flux in the induction coil changes to induce a voltage signal, the response resonance frequencies of different permanent magnets are different, and the acquisition of multi-frequency vibration energy can be realized. The utility model has the advantages of simple structure, practicality are strong, can high-efficiently gather the plane vibration energy.

Description

Magnetic liquid plane multi-frequency vibration energy collector

Technical Field

The utility model relates to a power generation facility field, concretely relates to magnetic liquid plane multifrequency vibration energy collector.

Background

The magnetic liquid is a stable colloidal suspension formed by dispersing nano ferromagnetic or ferrimagnetic particles coated with a surfactant in liquid carrier liquid, and the second-order buoyancy principle of the magnetic liquid means that the magnetic liquid can suspend a permanent magnet immersed in the magnetic liquid and has a specific gravity larger than that of the permanent magnet, so that the friction form between a permanent magnet and a contact surface of the permanent magnet can be changed, namely, the friction between solids is converted into the friction between liquid and solids, and only a small amount of magnetic liquid is contacted with the permanent magnet to be avoided, so that the sensitivity of the permanent magnet adsorbed with the magnetic liquid to the inertial force is higher.

The mechanical vibration energy collecting device mainly comprises an electrostatic type, a piezoelectric type and an electromagnetic type, the collected vibration frequency is relatively high, and aiming at various low-frequency vibrations existing in the nature, the collecting system has poor response capability to external vibration due to the influence of system damping and cannot collect the low-frequency vibrations. The magnetic liquid can enable the permanent magnet to suspend, the damping of an acquisition system can be effectively reduced, and the effect is more obvious particularly for an electromagnetic energy acquisition device. In addition, uncertainty of various vibration directions in the nature needs to find a vibration response system adapting to multiple directions in order to better acquire vibration energy. Meanwhile, the external vibration frequency is variable, and a single fixed vibration response system cannot meet the requirement.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is:

the vibration pickup system of the existing vibration energy collector has large damping, single vibration response direction and fixed response frequency.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a magnetic liquid plane multifrequency vibration energy collector, the device include column permanent magnet I, column permanent magnet II, non-magnetism nature sheet metal I, non-magnetism nature sheet metal II, non-magnetism nature sheet metal III, non-magnetism nature sheet metal IV, magnetic liquid, induction coil I, induction coil II, induction coil III, induction coil IV, magnetic material, non-magnetism nature connecting rod, casing. The induction coil I and the induction coil III are respectively positioned on the upper surfaces of the nonmagnetic sheet I and the nonmagnetic sheet III, the induction coil II and the induction coil IV are respectively positioned on the lower surfaces of the nonmagnetic sheet II and the nonmagnetic sheet IV, the columnar permanent magnet I with magnetic liquid adsorbed on the end surface is placed between the nonmagnetic sheet I and the nonmagnetic sheet II, the columnar permanent magnet II with magnetic liquid adsorbed on the end surface is placed between the nonmagnetic sheet III and the nonmagnetic sheet IV, the magnetic material is connected with the nonmagnetic connecting rod and is positioned between the nonmagnetic sheet II and the nonmagnetic sheet III, the distance between the nonmagnetic sheet I and the nonmagnetic sheet II is adjustable, and the nonmagnetic sheet I, the nonmagnetic sheet II, the nonmagnetic sheet III, the nonmagnetic sheet IV and the nonmagnetic connecting rod are respectively connected with the shell.

The columnar permanent magnet I and the columnar permanent magnet II are suspended between the nonmagnetic thin plates under the action of the magnetic liquid, and by utilizing the restoring force provided by the attraction force between the permanent magnets and the magnetic materials, the columnar permanent magnet I and the columnar permanent magnet II are used as inertia mass blocks to respond to vibration and move relative to the induction coil to cause the change of magnetic flux in the induction coil and generate electric energy.

Compared with the prior art, the utility model beneficial effect who has:

the energy collector has the advantages of low damping, high response sensitivity, plane response vibration, capability of realizing multi-frequency vibration energy collection, simple structure, excellent fatigue resistance, no noise and the like.

Drawings

Fig. 1 is a sectional view of the present invention.

In the figure: the device comprises a columnar permanent magnet I1, a columnar permanent magnet II 2, a nonmagnetic thin plate I3, a nonmagnetic thin plate II 4, a nonmagnetic thin plate III 5, a nonmagnetic thin plate IV 6, magnetic liquid 7, an induction coil I8, an induction coil II 9, an induction coil III 10, an induction coil IV 11, a magnetic material 12, a nonmagnetic connecting rod 13 and a shell 14.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

the utility model provides a magnetic liquid plane multifrequency vibration energy collector, the device include column permanent magnet I1, column permanent magnet II 2, non-magnetism nature sheet metal I3, non-magnetism nature sheet metal II 4, non-magnetism nature sheet metal III 5, non-magnetism nature sheet metal IV 6, magnetic liquid 7, induction coil I8, induction coil II 9, induction coil III 10, induction coil IV 11, magnetic material 12, non-magnetism nature connecting rod 13, casing 14.

An induction coil I8 and an induction coil III 10 are respectively positioned on the upper surfaces of a non-magnetic thin plate I3 and a non-magnetic thin plate III 5, an induction coil II 9 and an induction coil IV 11 are respectively positioned on the lower surfaces of a non-magnetic thin plate II 4 and a non-magnetic thin plate IV 6, a columnar permanent magnet I1 with magnetic liquid 7 adsorbed on the end surface is placed between the non-magnetic thin plate I3 and the non-magnetic thin plate II 4, and the axial distance range between the columnar permanent magnet I1 and the non-magnetic thin plate I3 and the non-magnetic thin plate II 4 is 0.1mm-1.5 mm; and placing the columnar permanent magnet II 2 with the end face adsorbed with the magnetic liquid 7 between the nonmagnetic thin plate III 5 and the nonmagnetic thin plate IV 6, wherein the axial distance between the columnar permanent magnet II 2 and the nonmagnetic thin plate III 5 and the axial distance between the columnar permanent magnet II 2 and the nonmagnetic thin plate IV 6 are respectively 0.1mm-1.5 mm.

The magnetic material 12 is connected with the non-magnetic connecting rod 13 and is positioned between the non-magnetic thin plate II 4 and the non-magnetic thin plate III 5, and the central point of the magnetic material 12 is on the axis of the non-magnetic thin plate II 4 and the non-magnetic thin plate III 5; the distance between the magnetic material 12 and the nonmagnetic thin plate II 4 and the distance between the magnetic material and the nonmagnetic thin plate III 5 are adjustable, so that the fixed response frequency of the columnar permanent magnet I1 and the columnar permanent magnet II 2 is changed, and the acquisition of multi-frequency vibration energy is realized.

The non-magnetic thin plate I3, the non-magnetic thin plate II 4, the non-magnetic thin plate III 5, the non-magnetic thin plate IV 6 and the non-magnetic connecting rod 13 are respectively fixed with the shell 14 and are parallel to each other, and the axes of the non-magnetic thin plates coincide. The columnar permanent magnet I1 and the columnar permanent magnet II 2 are suspended between the nonmagnetic thin plates under the action of the magnetic liquid 7, the columnar permanent magnet I1 and the columnar permanent magnet II 2 are used as inertia mass blocks to respond to vibration and move relative to the induction coil by utilizing restoring force provided by attraction force between the permanent magnets and the magnetic material 12, so that the change of magnetic flux in the induction coil is caused, electric energy is generated, in addition, the distance between the magnetic material 12 and the nonmagnetic thin plates is adjustable, the vibration frequency of the corresponding permanent magnet is variable, and the acquisition of multi-frequency vibration energy can be realized.

The magnetic liquid can be ester-based magnetic liquid, kerosene-based magnetic liquid or engine oil-based magnetic liquid.

The magnetic material 12 is a magnetic conductive material, such as aluminum alloy, nylon, austenitic stainless steel, and the like.

Claims

1. A magnetic liquid plane multi-frequency vibration energy collector comprises a columnar permanent magnet I (1), a columnar permanent magnet II (2), a non-magnetic thin plate I (3), a non-magnetic thin plate II (4), a non-magnetic thin plate III (5), a non-magnetic thin plate IV (6), magnetic liquid (7), an induction coil I (8), an induction coil II (9), an induction coil III (10), an induction coil IV (11), a magnetic material (12), a non-magnetic connecting rod (13) and a shell (14);

the connection between the parts is as follows: an induction coil I (8) and an induction coil III (10) are respectively positioned on the upper surfaces of a non-magnetic thin plate I (3) and a non-magnetic thin plate III (5), an induction coil II (9) and an induction coil IV (11) are respectively positioned on the lower surfaces of a non-magnetic thin plate II (4) and a non-magnetic thin plate IV (6), a columnar permanent magnet I (1) with magnetic liquid (7) adsorbed on the end surface is placed between the non-magnetic thin plate I (3) and the non-magnetic thin plate II (4), and a columnar permanent magnet II (2) with magnetic liquid (7) adsorbed on the end surface is placed between the non-magnetic thin plate III (5) and the non-magnetic thin plate IV (6); the magnetic material (12) is connected with the non-magnetic connecting rod (13), is positioned between the non-magnetic thin plate II (4) and the non-magnetic thin plate III (5), and has adjustable distance, and the non-magnetic thin plate I (3), the non-magnetic thin plate II (4), the non-magnetic thin plate III (5), the non-magnetic thin plate IV (6) and the non-magnetic connecting rod (13) are respectively connected with the shell (14);

the method is characterized in that: the columnar permanent magnet I (1) and the columnar permanent magnet II (2) are suspended between the nonmagnetic thin plates under the action of the magnetic liquid (7), the columnar permanent magnet I (1) and the columnar permanent magnet II (2) are used as inertia mass blocks to respond to vibration by utilizing restoring force provided by attraction force between the permanent magnets and the magnetic material (12), and move relative to the induction coil to cause the change of magnetic flux in the induction coil and generate electric energy, in addition, the distance between the magnetic material (12) and the nonmagnetic thin plates is adjustable, the vibration frequency of the corresponding permanent magnet is variable, and the acquisition of multi-frequency vibration energy can be realized.

2. The planar magnetic liquid multi-frequency vibration energy collector according to claim 1, wherein the induction coil I (8) and the induction coil III (10) are cylindrical and are respectively fixed on the upper surfaces of the nonmagnetic sheet I (3) and the nonmagnetic sheet III (5), and the induction coil II (9) and the induction coil IV (11) are cylindrical and are respectively fixed on the lower surfaces of the nonmagnetic sheet II (4) and the nonmagnetic sheet IV (6).

3. The magnetic liquid planar multi-frequency vibration energy collector according to claim 1, wherein the non-magnetic thin plate I (3), the non-magnetic thin plate II (4), the non-magnetic thin plate III (5) and the non-magnetic thin plate IV (6) are respectively fixed with the shell (14), and are parallel to each other, and the axes of the non-magnetic thin plates are coincident.

4. The magnetic liquid plane multi-frequency vibration energy collector according to claim 1, wherein the magnetic liquid (7) is adsorbed on the end faces of the columnar permanent magnet I (1) and the columnar permanent magnet II (2), the columnar permanent magnet I (1) adsorbed with the magnetic liquid (7) is positioned between the nonmagnetic sheet I (3) and the nonmagnetic sheet II (4), and the axial distance range between the columnar permanent magnet I (1) and the nonmagnetic sheet I (3) and the axial distance between the columnar permanent magnet I (4) and the nonmagnetic sheet II (3) are respectively 0.1mm-1.5 mm; the columnar permanent magnet II (2) adsorbed with the magnetic liquid (7) is positioned between the nonmagnetic thin plate III (5) and the nonmagnetic thin plate IV (6), and the axial distance range between the columnar permanent magnet II (2) and the nonmagnetic thin plate III (5) and the nonmagnetic thin plate IV (6) is 0.1mm-1.5 mm.

5. The planar magnetic liquid multi-frequency vibration energy collector according to claim 1, wherein the magnetic material (12) is connected with the non-magnetic connecting rod (13) and is positioned between the non-magnetic thin plate II (4) and the non-magnetic thin plate III (5), and the central point of the magnetic material (12) is on the axis of the non-magnetic thin plate II (4) and the non-magnetic thin plate III (5); the distances between the magnetic material (12) and the nonmagnetic thin plate II (4) and between the magnetic material and the nonmagnetic thin plate III (5) are adjustable, so that the fixed response frequencies of the columnar permanent magnet I (1) and the columnar permanent magnet II (2) are changed, and the multi-frequency vibration energy collection is realized.

6. A magnetic liquid planar multi-frequency vibration energy harvester according to claim 1, wherein the magnetic material (12) is a magnetically conductive material.