CN210429464U

CN210429464U - Vibration damper for transformer

Info

Publication number: CN210429464U
Application number: CN201920871467.1U
Authority: CN
Inventors: 何杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2020-04-28
Anticipated expiration: 2029-06-11

Abstract

The utility model discloses a vibration damper for transformer, its characterized in that: the vibration reduction assembly comprises a vibration reduction shell, a fixed magnet, a movable magnet and a vibration reduction coil, wherein the same poles of the fixed magnet and the movable magnet are oppositely arranged in the vibration reduction shell, and a gap is reserved between the fixed magnet and the movable magnet; the vibration reduction coil is arranged on the movable magnet in a surrounding manner and is arranged into a closed loop; the movable magnet is fixed on the transformer, and the movable magnet moves relative to the fixed magnet along with the vibration of the transformer. The transformer vibrates to drive the moving magnet to move up and down, the magnetic flux of the vibration reduction coil changes, and the vibration reduction coil generates induced electromotive force so as to generate induced current; because the vibration reduction coil is arranged in a closed loop, the generated current can generate a reverse magnetic field to damp the vibration of the transformer, and the vibration of the transformer is greatly reduced.

Description

Vibration damper for transformer

Technical Field

The utility model relates to a power supply field especially relates to a vibration damper for transformer.

Background

A transformer is a device that changes an alternating voltage using the principle of electromagnetic induction. The transformer belongs to an electric appliance with high energy density. The coil has high alternating current, the alternating current can generate an interactively changed magnetic field, and when the interactively changed magnetic field passes through the iron core of the transformer, the iron core vibrates due to magnetostriction of the silicon steel sheets, so that vibration is generated. The vibration of the transformer is a continuous vibration generated by the vibration of the transformer body and the vibration of the cooling device. The magnitude of the transformer vibration is related to the capacity of the transformer, the material of the silicon steel sheet, the magnetic flux density of the iron core and other factors.

The transformer radiates vibration to the periphery through air, and the vibration of the transformer body is completely determined by the magnetostrictive vibration of the iron core. Thus, the vibration and noise of the transformer interfere with the surrounding environment, and the problem of environmental pollution is caused.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a utility model aim at: aiming at the existing problems, the vibration reduction device for the transformer is provided, and the problem of overlarge vibration of the transformer is solved.

The utility model adopts the technical scheme as follows:

a vibration damping device for a transformer, characterized in that: the vibration reduction assembly comprises a vibration reduction shell, a fixed magnet, a movable magnet and a vibration reduction coil, wherein the same poles of the fixed magnet and the movable magnet are oppositely arranged in the vibration reduction shell, and a gap is reserved between the fixed magnet and the movable magnet; the vibration reduction coil is arranged on the movable magnet in a surrounding manner and is arranged into a closed loop; the movable magnet is fixed on the transformer, and the movable magnet moves relative to the fixed magnet along with the vibration of the transformer.

The transformer vibrates to drive the moving magnet to move up and down, the magnetic flux of the vibration reduction coil changes, and the vibration reduction coil generates induced electromotive force so as to generate induced current; because the vibration reduction coil is arranged in a closed loop, the generated current can generate a reverse magnetic field to damp the vibration of the transformer, and the vibration of the transformer is greatly reduced.

Further, the vibration reduction assembly further comprises a support column, and the moving magnet is fixed to the transformer through the support column.

Furthermore, the vibration reduction assembly further comprises a fixed guide ring, the fixed guide ring is arranged in the vibration reduction shell, the fixed guide ring is sleeved on the support column, and the support column can slide in the fixed guide ring.

Furthermore, the vibration reduction assembly further comprises a fixed seat, the fixed seat is fixed in the vibration reduction shell, and the fixed magnet is fixed on the fixed seat.

Further, the transformer also comprises a noise reduction assembly, wherein the noise reduction assembly is electrically connected with the vibration reduction coil to generate a magnetic field, and the noise reduction assembly is arranged in the transformer.

Further, the noise reduction assembly comprises a noise reduction iron core and a noise reduction coil, the noise reduction coil is wound on the noise reduction iron core, and the noise reduction coil is electrically connected with the vibration reduction coil.

Further, the transformer comprises a transformer shell, a magnetic core, a primary coil and a secondary coil, wherein the primary coil and the secondary coil are sleeved on the magnetic core, and the magnetic core is arranged in the transformer shell; the vibration reduction assembly and the noise reduction assembly are arranged in the transformer shell, the supporting column is fixedly connected with the magnetic core, and the noise reduction assembly is fixed on the magnetic core or the transformer shell.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the transformer vibrates to drive the moving magnet to move up and down, the magnetic flux of the vibration reduction coil changes, and the vibration reduction coil generates induced electromotive force so as to generate induced current; because the vibration reduction coil is arranged in a closed loop, the generated current can generate a reverse magnetic field to damp the vibration of the transformer, so that the vibration of the transformer is greatly reduced;

2. the vibration reduction coil is communicated with the noise reduction coil to form a closed loop, the generated current can generate a reverse magnetic field, the vibration of the magnetic core is damped, and the vibration of the magnetic core is further reduced, so that the noise is reduced, and the vibration of the transformer can be greatly reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural view of the damping assembly of the present invention;

fig. 3 is a schematic structural view of the noise reduction assembly of the present invention;

description of the drawings: the transformer comprises a base 1, a vibration reduction assembly 2, a transformer shell 3, a heat radiating fin 4, a magnetic core 5, a secondary coil 6, a primary coil 7, a noise reduction assembly 8, a vibration reduction shell 9, a fixed seat 10, a fixed magnet 11, a movable magnet 12, a vibration reduction coil 13, a support column 14, a fixed guide ring 15, a noise reduction iron core 16 and a noise reduction coil 17.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

As shown in fig. 1-3, the utility model discloses a vibration damper for transformer, transformer include base 1, transformer housing 3, magnetic core 5, secondary 6 and main coil 7, base 1 and transformer housing 3 form the cavity, and magnetic core 5 is located in the cavity, secondary 6 and main coil 7 cover establish with on the magnetic core 5. The transformer housing 3 is also provided with a plurality of radiating fins 4.

Be equipped with a plurality of damping components 2 between base 1 and the magnetic core 5, damping components 2 includes damping shell 9, fixed magnet 11, moves magnet 12, damping coil 13, support column 14, fixed guide ring 15 and fixing base 10, damping shell 9 is fixed in base 1, fixing base 10 is fixed in the damping shell 9, and fixed magnet 11 is fixed in fixing base 10, fixed magnet 11 with move magnet 12 homopolar relative setting, just fixed magnet 11 with move and leave the space between magnet 12, support column 14 is fixed in move magnet 12, move magnet 12 and pass through support column 14 is fixed in magnetic core 5. By arranging the movable magnet 12 and the fixed magnet 11, the heaviest magnetic core 5 of the transformer is supported under the action of a magnetic field, and the magnetic core 5 is not directly and mechanically connected with the outside, so that the vibration of the transformer can be greatly reduced. The fixed guide ring 15 is arranged in the vibration reduction shell 9, the fixed guide ring 15 is sleeved on the support column 14, and the support column 14 can slide in the fixed guide ring 15; the damping coil 13 is arranged around the moving magnet 12, and the damping coil 13 is arranged as a closed loop; and the moving magnet 12 moves relative to the fixed magnet 11 with the vibration of the transformer.

When the transformer runs, alternating current can be generated in a secondary coil 6 and a primary coil 7 of the transformer, the alternating current can generate an alternating magnetic field, and when the magnetic field which changes interactively passes through a magnetic core 5 of the transformer, the iron core stretches out and draws back due to magnetostriction of silicon steel sheets, so that vibration is generated, and the whole transformer vibrates. The magnetic core 5 vibrates to drive the support column 14 to move up and down, the support column 14 drives the movable magnet 12 to move up and down, so that the magnetic flux of the vibration reduction coil 13 changes, induced electromotive force can be generated in the vibration reduction coil 13, and induced current is further generated; because the vibration reduction coil 13 is arranged in a closed loop, the generated current can generate a reverse magnetic field to damp the vibration of the magnetic core 5, and the vibration of the magnetic core 5 is further reduced, so that the vibration of the transformer can be greatly reduced.

Example 2

As shown in fig. 1 to fig. 3, in this embodiment 2, a noise reduction assembly 8 is additionally provided on the basis of embodiment 1, where the noise reduction assembly 8 includes a noise reduction iron core 16 and a noise reduction coil 17, the noise reduction coil 17 is wound around the noise reduction iron core 16, the noise reduction coil 17 is electrically connected to the vibration reduction coil 13, and the noise reduction iron core 16 is fixed to the magnetic core 5 or the transformer housing 3.

In the specific operation process, when the transformer operates, alternating current can be generated in the secondary coil 6 and the primary coil 7 of the transformer, the alternating current can generate an alternating magnetic field, and when the magnetic field which is changed interactively passes through the magnetic core 5 of the transformer, the iron core is stretched due to magnetostriction of silicon steel sheets, so that vibration is generated. Thereby causing the entire transformer to vibrate. The magnetic core 5 vibrates to drive the support column 14 to move up and down, the support column 14 drives the movable magnet 12 to move up and down, so that the magnetic flux of the vibration reduction coil 13 changes, induced electromotive force can be generated in the vibration reduction coil 13, and induced current is further generated; the induced current is conducted to the noise reduction coil 17, the noise reduction coil 17 drives the noise reduction iron core 16 to vibrate, and the vibration generated by the current of the vibration reduction coil 13 is just opposite to the vibration of the magnetic core 5, so that the noise radiated outwards by the magnetic core 5 or the transformer shell 3 is further reduced, and the environmental protection performance of the transformer is improved.

Meanwhile, the vibration reduction coil 13 is communicated with the noise reduction coil 17 to form a closed loop, the generated current can generate a reverse magnetic field to damp the vibration of the magnetic core 5, and the vibration of the magnetic core 5 is further reduced, so that the vibration of the transformer can be greatly reduced while the noise is reduced.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A vibration damping device for a transformer, characterized in that: the vibration reduction device comprises a vibration reduction assembly (2), wherein the vibration reduction assembly (2) comprises a vibration reduction shell (9), a fixed magnet (11), a movable magnet (12) and a vibration reduction coil (13), the same poles of the fixed magnet (11) and the movable magnet (12) are oppositely arranged in the vibration reduction shell, and a gap is reserved between the fixed magnet (11) and the movable magnet (12); the vibration reduction coil (13) is arranged on the moving magnet (12) in a surrounding mode, and the vibration reduction coil (13) is arranged to be a closed loop; the movable magnet (12) is fixed on the transformer, and the movable magnet (12) moves relative to the fixed magnet (11) along with the vibration of the transformer.

2. A vibration damping device for a transformer according to claim 1, wherein: the vibration reduction assembly (2) further comprises a supporting column (14), and the moving magnet (12) is fixed to the transformer through the supporting column (14).

3. A vibration damping device for a transformer according to claim 2, wherein: damping subassembly (2) still includes fixed guide ring (15), fixed guide ring (15) are located in damping shell (9), fixed guide ring (15) cover is located support column (14), just support column (14) can slide in fixed guide ring (15).

4. A vibration damping device for a transformer according to claim 3, wherein: damping subassembly (2) still include fixing base (10), fixing base (10) are fixed in damping shell (9), and fixed magnet (11) are fixed in fixing base (10).

5. A vibration damping device for a transformer according to claim 4, wherein: the transformer is characterized by further comprising a noise reduction assembly (8), wherein the noise reduction assembly (8) is electrically connected with the vibration reduction coil (13) to generate a magnetic field, and the noise reduction assembly (8) is arranged in the transformer.

6. A vibration damping device for a transformer according to claim 5, wherein: the noise reduction assembly (8) comprises a noise reduction iron core (16) and a noise reduction coil (17), the noise reduction coil (17) is wound on the noise reduction iron core (16), and the noise reduction coil (17) is electrically connected with the vibration reduction coil (13).

7. A vibration damping device for a transformer according to claim 6, wherein: the transformer comprises a transformer shell (3), a magnetic core (5), a primary coil (7) and a secondary coil (6), wherein the primary coil (7) and the secondary coil (6) are sleeved on the magnetic core (5), and the magnetic core (5) is arranged in the transformer shell (3); damping subassembly (2) and noise reduction subassembly (8) are located in transformer shell (3), just support column (14) with magnetic core (5) fixed connection, noise reduction subassembly (8) are fixed in magnetic core (5) or transformer shell (3).