CN108511165B

CN108511165B - Compact transformer

Info

Publication number: CN108511165B
Application number: CN201810253455.2A
Authority: CN
Inventors: 田正稳; 孙成明; 张维进; 杭小燕
Original assignee: Jiangsu Yawei Transformer Co ltd
Current assignee: Jiangsu Yawei Transformer Co ltd
Priority date: 2018-03-26
Filing date: 2018-03-26
Publication date: 2020-12-01
Anticipated expiration: 2038-03-26
Also published as: CN108511165A

Abstract

The invention discloses a compact transformer, which comprises a magnetic core, a coil, a first fixing piece and a second fixing piece, wherein the first fixing piece and the second fixing piece are used for longitudinally fixing the magnetic core and the coil from two sides respectively, the first fixing piece and the second fixing piece are used for transversely fixing and pressing the magnetic core and the coil through a connecting piece, the first fixing piece and the second fixing piece respectively comprise main fixing pieces for surrounding partial magnetic core and coil, and the main fixing pieces are mutually connected through auxiliary fixing pieces to form surrounding of the side surfaces of the magnetic core and the coil. The transformer has the advantages that the transformer is integrally packaged in a mode of surrounding the magnetic core and the coil, the main fixing piece and the auxiliary fixing piece are used for surrounding the front side and the rear side, and the connecting pieces are used for surrounding and connecting the periphery of the magnetic core and the coil, so that the surrounding of the periphery is realized.

Description

Compact transformer

Technical Field

The invention relates to the technical field of transformers, in particular to a compact transformer.

Background

A transformer such as an oil-immersed power distribution transformer is generally installed on land, and although the rolling and vibration during transportation are taken into consideration, the rolling and inclination of waves and the like when the transformer is installed in a tower (tower) of a ship or a floating offshore wind turbine generator system are not taken into consideration. When the transformer is used in a tower of a ship or a floating offshore wind turbine generator, the transformer is usually continuously shaken or tilted, and there is a possibility that an iron core or a coil in a box of the transformer may be displaced.

In the case where a transformer such as an oil immersed transformer is installed in a tower of a ship or a floating offshore wind turbine generator system, the transformer is resistant to shaking or tilting by adopting a structure in which an iron core coil assembly in which a coil and an iron core are assembled in a tank of the transformer is integrally fixed in the tank. However, the structures of the iron core and the coil are not regular, the magnetic core is compressed by the pressing plates on the two sides in the transverse direction, the pressing plates on the two sides are fixed by the bolts, and the connection is still carried out by the combination of the pressing plates and the bolts in the longitudinal direction. This approach has certain drawbacks, both in the transverse and longitudinal directions.

Disclosure of Invention

The present invention has been made to solve the above problems, and an object of the present invention is to provide a compact transformer.

The invention achieves the purpose through the following technical scheme, and the compact transformer comprises a magnetic core, a coil, a first fixing piece and a second fixing piece, wherein the first fixing piece and the second fixing piece are used for longitudinally fixing the magnetic core and the coil from two sides respectively, the first fixing piece and the second fixing piece are used for transversely fixing and pressing the magnetic core and the coil through a connecting piece, the first fixing piece and the second fixing piece respectively comprise main fixing pieces for surrounding partial magnetic core and coil, and the main fixing pieces are connected with each other through auxiliary fixing pieces to form surrounding of the side faces of the magnetic core and the coil.

Preferably, the main fixing pieces are L-shaped and are half-wrapped on one side surface of the magnetic core and one side surface of the coil, the two end parts of the main fixing pieces are connecting ends, the two main fixing pieces are arranged in a centrosymmetric mode, the connecting ends are opposite, and the auxiliary fixing pieces are fixedly connected to the opposite connecting ends.

Preferably, the opposite connecting ends are provided with opposite first screw holes along a direction parallel to the plane of the main fixing piece, and the auxiliary fixing piece is a first bolt fixedly connected in the opposite first screw holes.

Preferably, the main fixing piece is U-shaped in cross section, a connecting plate perpendicular to the main fixing piece is mounted on at least one connecting end, and a first screw hole is formed in the connecting plate.

Preferably, the connecting piece is a second bolt, a plurality of symmetrical second screw holes are vertically formed in the main fixing piece corresponding to the two side faces of the magnetic core and the coil, and the second bolt penetrates through the symmetrical second screw holes.

Preferably, the connecting piece has a plurality of connecting pieces, and the connecting pieces are arranged around the magnetic core and the coil along the main fixing piece.

Preferably, the connecting piece is attached to the side surfaces of the main fixing pieces on the two sides, a third screw hole is formed in the attachment position of the main fixing piece and the connecting piece, the connecting piece stretches across the main fixing pieces on the two sides, and two waist-shaped holes which correspond to the third screw holes and are formed along the connecting line of the pair of third screw holes are formed in the connecting piece.

Preferably, both ends of the connecting piece are longer than the plane of the main fixing piece.

Preferably, the connecting piece is provided with a hook-shaped end, a convex body extends outwards from the main fixing piece corresponding to the hook-shaped end in the direction vertical to the surface of the main fixing piece, and the hook-shaped end is hooked on the convex body; the other end of the connecting piece spans the main fixing pieces on two sides, and a fourth bolt is connected to the end part of the connecting piece along the direction vertical to the main fixing pieces.

Preferably, one end of the connecting piece, which is far away from the hook-shaped end, crosses over the main fixing pieces on the two sides and then is bent downwards, and the fourth bolt is screwed at the bent position.

The invention has the beneficial effects that:

(1) the transformer is integrally packaged in a mode of surrounding the magnetic core and the coil, the transformer is surrounded by the main fixing piece and the auxiliary fixing piece on the front side and the rear side, and the connecting pieces are connected around the magnetic core and the coil to surround the periphery of the magnetic core and the coil;

(2) the main fixing pieces are L-shaped, and allowance gaps are reserved between the connecting ends of the main fixing pieces which are matched with each other so as to be suitable for transformers with more specifications, but the allowance gaps are not large, after the main fixing pieces are connected through bolts, the overall strength of the first fixing piece or the second fixing piece is basically not influenced, and the transformer is basically protected in an enclosing manner;

(3) the connecting piece is connected around the magnetic core and the coil in a surrounding manner, so that the coil and the magnetic core are further fixed firmly;

(4) the two ends of the connecting piece are longer than the plane of the main fixing piece and are fixedly connected with the main fixing piece through screw holes, and the end parts longer than the main fixing piece can abut against the inner wall of the transformer box body to fix the transformer and the box body into a whole, so that the stability is improved;

(5) one end of the connecting piece is a hook-shaped end, the other end of the connecting piece is a bolt, and the assembling speed can be high only by performing threaded connection operation on one end of the connecting piece.

Drawings

FIG. 1 is a schematic view of a first embodiment of the present invention;

FIG. 2 is a schematic view of a second embodiment of the present invention;

FIG. 3 is a schematic view of a third embodiment of the present invention;

fig. 4 is a schematic view of a connector according to a third embodiment of the present invention.

In the figure: 1. the magnetic core, 2, the coil, 3, the first fixing piece, 31, the main fixing piece, 311, the connecting plate, 32, the auxiliary fixing piece, 4, the second bolt, 5, the long bolt, 6, the second connecting piece, 61, the kidney-shaped hole, 7, the third connecting piece, 71, the hook-shaped end, 72 and the fourth bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

First embodiment

Referring to fig. 1, a compact transformer includes a magnetic core 1 and a coil 2, and further includes a first fixing member 3 and a second fixing member longitudinally fixing the magnetic core 1 and the coil 2 from both sides, the first fixing member 3 and the second fixing member transversely fixing and compressing the magnetic core 1 and the coil 2 through a connecting member, the first fixing member 3 and the second fixing member each include a main fixing member 31 surrounding a part of the magnetic core 1 and the coil 2, the main fixing members 31 are connected to each other through an auxiliary fixing member 32 to form a surrounding of the side surfaces of the magnetic core 1 and the coil 2, and the main fixing members located on the same side are further fastened through a long bolt 5 in addition to the auxiliary fixing member 32.

The main fixing members 31 are L-shaped and are half-wrapped on one side surface of the magnetic core 1 and the coil 2, the two end parts of the main fixing members are connecting ends, the two main fixing members 31 are arranged in a central symmetry mode, the connecting ends are opposite, and the auxiliary fixing members 32 are fixedly connected to the opposite connecting ends.

The opposite connection ends are provided with opposite first screw holes along a direction parallel to the plane of the main fixing member 31, and the auxiliary fixing member 32 is a first bolt fixedly connected in the opposite first screw holes.

The section of the main fixing member 31 is U-shaped, at least one connecting end is provided with a connecting plate 311 vertical to the main fixing member 31, the connecting plate 311 is provided with a first screw hole, and the other end can be matched with the connecting plate 311 of another matched main fixing member 31 by taking the side wall of the main fixing member 31 as an opening point of the first screw hole.

The connecting piece has a plurality of, encircles magnetic core 1 and 2 a week settings of coil along main firmware 31, and main firmware 31 and supplementary firmware 32 realize the enclosed protection to the transformer in the side, and the connecting piece ring is established all around, not only plays the connection fixed action, also plays the guard action moreover.

The connecting piece is a second bolt 4, a plurality of symmetrical second screw holes are vertically formed in the main fixing piece 31 corresponding to the two side faces of the magnetic core 1 and the coil 2, and the second bolt penetrates through the symmetrical second screw holes.

Second embodiment

As shown in fig. 2, under the same other conditions as the first embodiment, the second connecting member 6 is attached to the side surfaces of the main fastening members 31 on both sides, a third screw hole is formed at the attachment position of the main fastening member 31 and the second connecting member 6, the second connecting member 6 spans over the main fastening members 31 on both sides, and two waist-shaped holes 61 corresponding to the third screw holes and formed along the connecting line of the pair of third screw holes are formed thereon, and the connecting holes are waist-shaped holes 61, which can be adapted to transformers of various specifications. The both ends of second connecting piece 6 are all good at main firmware 31 place plane, and the tip that exceeds is to propping with the box inner wall of splendid attire transformer, further links firmly transformer and box as an organic whole, has improved stability can.

Third embodiment

As shown in fig. 3 and 4, in other cases, the same as the first and second embodiments, the third connecting element 7 has a hook-shaped end 71, and a protrusion extends outward from the main fixing element 31 corresponding to the hook-shaped end 71 in a direction perpendicular to the surface of the main fixing element 31, in this embodiment, a main fixing element with a U-shaped cross section is adopted, the hook-shaped end 71 is hooked on the protrusion, and the protrusion is provided at any position on the main fixing element 31, so that the third connecting element 7 can be conveniently connected at any position; the other end of the third connecting piece 7 strides over the main fixing pieces 31 at both sides, and is connected with a fourth bolt 72 at the end along the direction vertical to the main fixing pieces 31, one end of the third connecting piece 7 far away from the hook-shaped end 71 strides over the main fixing pieces 31 at both sides and then bends downwards, and the fourth bolt 72 is screwed at the bent part. During installation, the fourth bolt 72 is screwed at one end to enable the end to be tightly pressed against the surface of the main fixing member 31 for fixing, and the installation step of one bolt is omitted.

In order to achieve a more perfect fixing effect, the first, second and third connecting

members

4, 6, 7 can be simultaneously and mixedly arranged in the same transformer, and this embodiment only lists the mixed use cases of the second and third connecting

members

6, 7.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A compact transformer, includes magnetic core and coil, its characterized in that: the magnetic core and the coil are longitudinally fixed from two sides by a first fixing piece and a second fixing piece respectively, the magnetic core and the coil are transversely fixed and pressed by a connecting piece between the first fixing piece and the second fixing piece, the first fixing piece and the second fixing piece respectively comprise main fixing pieces which surround part of the magnetic core and the coil, and the main fixing pieces are connected with each other through auxiliary fixing pieces to form surrounding of the side faces of the magnetic core and the coil; the cross section of the main firmware is U-shaped, the main firmware is L-shaped and is half-wrapped on one side surface of the magnetic core and the coil, the two end parts of the main firmware are connecting ends, the two main firmware are arranged in central symmetry, the connecting ends are opposite, and the auxiliary firmware is fixedly connected to the opposite connecting ends;

the connecting piece comprises a first connecting piece, a second connecting piece and a third connecting piece, the first connecting piece is a second bolt, a plurality of symmetrical second screw holes are vertically formed in the magnetic core and the main fixing piece corresponding to the two side faces of the coil, and the second bolt penetrates through the symmetrical second screw holes;

the second connecting piece is attached to the side surfaces of the main fixing pieces on the two sides, a third screw hole is formed in the attachment position of the main fixing pieces and the second connecting piece, the second connecting piece stretches across the main fixing pieces on the two sides, and two waist-shaped holes which correspond to the third screw holes and are formed along the connecting line of the third screw holes are formed in the second connecting piece;

the third connecting piece is provided with a hook-shaped end, a convex body extends outwards in the direction vertical to the surface of the main fixing piece corresponding to the hook-shaped end, and the hook-shaped end is hooked on the convex body; the other end of the third connecting piece spans the main fixing pieces on the two sides, the end part of the third connecting piece is connected with a fourth bolt in the direction vertical to the main fixing pieces, one end of the third connecting piece, which is far away from the hook-shaped end, spans the main fixing pieces on the two sides and then bends downwards, and the fourth bolt is in threaded connection at the bent part.

2. A compact transformer according to claim 1, characterized in that: the opposite connecting end is provided with opposite first screw holes along the direction parallel to the plane of the main fixing piece, and the auxiliary fixing piece is a first bolt fixedly connected in the opposite first screw holes.

3. A compact transformer according to claim 2, characterized in that: at least one connecting end is provided with a connecting plate vertical to the main fixing piece, and the connecting plate is provided with a first screw hole.

4. A compact transformer according to claim 1, characterized in that: the second connecting pieces are provided with a plurality of second connecting pieces, and the second connecting pieces are arranged around the magnetic core and the coil along the main fixing piece.

5. A compact transformer according to claim 1, characterized in that: and both ends of the second connecting piece are longer than the plane of the main fixing piece.