CN210467534U

CN210467534U - Magnetic field offset structure for transformer coil head

Info

Publication number: CN210467534U
Application number: CN201921536460.0U
Authority: CN
Inventors: 熊建华
Original assignee: Hubei Tianyuan Power Transf Co ltd
Current assignee: Hubei Tianyuan Power Transf Co ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-05-05
Anticipated expiration: 2029-09-16

Abstract

The utility model discloses a transformer coil goes out first magnetic field and offsets structure, its built-in transformer housing, transformer coil go out first magnetic field and offset structure include: a coil and a clamping component; the coil comprises a coil body, a first outgoing line and a second outgoing line, wherein the axis of the coil body is vertically arranged, the upper end of the coil body is electrically connected with the first outgoing line, the lower end of the coil body is electrically connected with the second outgoing line, the first outgoing line and the second outgoing line are arranged side by side in a close proximity mode, and an insulation gap of 2-3 mm is formed between the first outgoing line and the second outgoing line; the clamping assembly comprises a base plate, a guide block and a cover plate. Because the insulating gap of 2 mm-3 mm is arranged between the first outgoing line and the second outgoing line, the insulating gap is small, and the first outgoing line and the second outgoing line are almost collinear, so that the eddy current loss is reduced.

Description

Magnetic field offset structure for transformer coil head

Technical Field

The utility model relates to a transformer technical field, concretely relates to transformer coil goes out first magnetic field and offsets structure.

Background

As shown in fig. 1, an outgoing line 02 at one end of a coil 01 of a transformer is led vertically upward, and an outgoing line 02 at the other end of the coil 01 is led vertically downward, but eddy current loss is generated in a metal case of the transformer by an alternating magnetic field generated by the two outgoing lines 02.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned technique not enough, provide a transformer coil and go out first magnetic field and offset the structure for the metal casing that reduces the transformer produces the eddy current loss.

In order to achieve the above technical purpose, the technical scheme of the utility model provide a transformer coil goes out first magnetic field and offsets structure, its built-in transformer housing that arranges, transformer coil go out first magnetic field and offset the structure and include: a coil and a clamping component;

the coil comprises a coil body, a first outgoing line and a second outgoing line, wherein the axis of the coil body is vertically arranged, the upper end of the coil body is electrically connected with the first outgoing line, the lower end of the coil body is electrically connected with the second outgoing line, the first outgoing line and the second outgoing line are arranged side by side in a close proximity mode, and an insulation gap of 2-3 mm is formed between the first outgoing line and the second outgoing line;

the clamping assembly comprises a base plate, a guide block and a cover plate, the base plate is made of aluminum alloy, the back surface of the base plate is fixedly connected with the transformer shell, a first clamping groove which is sunken towards the back surface of the base plate and penetrates through the upper end surface and the lower end surface of the base plate is arranged in the middle of the front surface of the base plate, a plurality of clamping holes which are sequentially arranged from top to bottom are formed in the left side and the right side of the front surface of the base plate, a plurality of abdicating grooves are formed in the back surface of the base plate, and the abdicating grooves are communicated with the clamping holes in; the guide block is an insulator, the guide block is arranged in the first clamping groove and fixedly connected with the first clamping groove, two guide grooves formed by sinking towards the back surface of the guide block are arranged on the front surface of the guide block, the two guide grooves are vertically arranged side by side, the distance between the adjacent sides of the two guide grooves is 2-3 mm, the two guide grooves penetrate through the upper end surface and the lower end surface of the guide block, and the two guide grooves are clamped with the first outgoing line and the second outgoing line in a one-to-one correspondence manner; the apron is the insulator, the left and right sides at the back of apron all is provided with a plurality of joint heads that from top to bottom arrange in proper order, and is a plurality of but joint head one-to-one is with a plurality of joint hole joint.

Compared with the prior art, the beneficial effects of the utility model include: the joint subassembly is used for connecting first lead-out wire and second lead-out wire, and first lead-out wire with the second lead-out wire next-door neighbour arranges side by side, first lead-out wire with alternating current direction of motion in the second lead-out wire is parallel this moment, but first lead-out wire with current direction of motion in the second lead-out wire is opposite this moment, first lead-out wire with the magnetic field opposite direction that the second lead-out wire produced, because first lead-out wire with set up 2mm ~ 3 mm's insulating clearance between the second lead-out wire, insulating clearance is very little, first lead-out wire with the second lead-out wire is almost collineation, first lead-out wire with the magnetic field that the second lead-out wire produced can most mutual cancellation to the eddy current loss that transformer metal casing produced has been reduced.

Drawings

Fig. 1 is a schematic diagram of a coil structure of a transformer in the background art.

Fig. 2 is a schematic view of a front view structure of an embodiment of a structure for canceling a magnetic field generated by a transformer coil.

Fig. 3 is a schematic sectional view of the plane a-a in fig. 2.

Fig. 4 is a schematic structural view of fig. 3 with the cover plate, the first lead line and the second lead line removed.

Fig. 5 is a schematic front view of the middle substrate and the guide block of the present invention.

Fig. 6 is a schematic view of the rear view surface structure of the middle cover plate of the present invention.

Detailed Description

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.

Referring to fig. 2, the present embodiment provides a transformer coil magnetic field cancellation structure, which is disposed inside a transformer housing, and the transformer coil magnetic field cancellation structure includes: coil 1 and joint subassembly 2.

Coil 1 includes coil body 1, first lead-out wire 11 and second lead-out wire 12, the vertical arrangement of axis of coil body 11, the upper end of coil body 11 with first lead-out wire 12 electricity is connected the lower extreme of coil body 11 with second lead-out wire 13 electricity is connected, first lead-out wire 12 with second lead-out wire 13 next-door neighbour arranges side by side, just first lead-out wire 12 with set up 2mm ~ 3 mm's insulating gap between the second lead-out wire 13, in this embodiment, coil body 11, first lead-out wire 12 and second lead-out wire 13 are formed by the same copper wire bending type.

Referring to fig. 3 to 6, the clamping assembly 2 includes a substrate 21, a guide block 22 and a cover plate 23.

The base plate 21 is made of aluminum alloy, the back surface of the base plate 21 is fixedly connected with the transformer shell, the middle part of the front surface of the base plate 21 is provided with a recess towards the back surface, and penetrates through the first clamping grooves on the upper and lower end surfaces, the left and right sides of the front surface of the base plate 21 are respectively provided with a plurality of clamping holes 21a which are sequentially arranged from top to bottom, the back surface of the base plate 21a is provided with a plurality of abdicating grooves 21b, the abdicating grooves 21b are communicated with the clamping holes 21a in a one-to-one correspondence, base plate 21 left side and right side all are provided with a flange board 21c, be provided with bolt hole 21c1 on the flange board 21c, use the bolt to pass through bolt hole 21c1 can with base plate 21 with the screw hole that sets up on the transformer housing is connected, in this embodiment, base plate 21 with flange board 21c is by same aluminium alloy plate stamping forming.

Guide block 22 is the insulator, place in guide block 22 first joint groove, just guide block 22 with first joint groove fixed connection, guide block 22's front is provided with two guiding grooves 22a to the sunken formation in its back, two guiding grooves 22a is all vertical arranges side by side, and two the interval of the adjacent side of guiding grooves 22a is 2mm ~ 3mm, two guiding grooves 22a all run through with guide block 22's upper and lower terminal surface, two guiding grooves 22a one-to-one joint in first lead-out wire 12, second lead-out wire 13, apron 23 is the insulator, the left and right sides at the back of apron 23 all is provided with a plurality of joint head 23a that arrange in proper order from top to bottom, and is a plurality of joint head 23a can one-to-one with a plurality of joint hole 21a joint, in this embodiment guide block 22, The cover plate 23 is made of ABS plastic.

The clamping assembly 2 is used for connecting a first outgoing line 12 and a second outgoing line 13, the first outgoing line 12 and the second outgoing line 13 are arranged next to each other, at the moment, the direction of alternating current movement in the first outgoing line 12 and the second outgoing line 13 is parallel, but at the moment, the direction of current movement in the first outgoing line 12 and the second outgoing line 13 is opposite, the direction of a magnetic field generated by the first outgoing line 12 and the second outgoing line 13 is opposite, and because an insulation gap of 2 mm-3 mm is arranged between the first outgoing line 12 and the second outgoing line 13, the insulation gap is small, the first outgoing line 12 and the second outgoing line 13 are almost collinear, and most of the magnetic fields generated by the first outgoing line 12 and the second outgoing line 13 cancel each other, so that the eddy current loss generated by a transformer metal shell is reduced.

In this embodiment, the clamping head 23a is in interference fit with the clamping hole 21a, specifically, the inner diameter of the clamping hole 21a gradually increases from the center thereof to the two ends thereof; each clamping connector 23a comprises a round table 23a1 and a hemispherical head 23a2, one end face of the round table 23a1 is fixedly connected with the back face of the cover plate 21, the other end face of the round table 23a1 is fixedly connected with the plane end of the hemispherical head 23a2 in a coaxial manner, the outer diameter of the round table 23a1 is gradually increased from one end close to the cover plate 23 to one end close to the hemispherical head 23a2, the round table 23a1 is smoothly connected with the hemispherical head 23a2, the maximum outer diameter of the round table 23a1 is larger than the minimum inner diameter of the clamping hole 21a, because the base plate 21 is made of aluminum alloy, namely the inner peripheral surface of the clamping hole 21a is made of aluminum alloy which has certain elasticity, the clamping connector is made of ABS plastic which also has certain elasticity, the inner peripheral surface of the clamping hole 21a can be elastically clamped with the clamping connector 23a, and the hemispherical head 23a2 is used for smoothly guiding the round table 23a1 to be clamped with the clamping hole 21a, thereby facilitating the disassembly and assembly of the cover plate 23.

The working principle is as follows: the clamping assembly 2 is used for connecting a first outgoing line 12 and a second outgoing line 13, the first outgoing line 12 and the second outgoing line 13 are arranged next to each other, at the moment, the direction of alternating current movement in the first outgoing line 12 and the second outgoing line 13 is parallel, but at the moment, the direction of current movement in the first outgoing line 12 and the second outgoing line 13 is opposite, the direction of a magnetic field generated by the first outgoing line 12 and the second outgoing line 13 is opposite, and because an insulation gap of 2 mm-3 mm is arranged between the first outgoing line 12 and the second outgoing line 13, the insulation gap is small, the first outgoing line 12 and the second outgoing line 13 are almost collinear, and most of the magnetic fields generated by the first outgoing line 12 and the second outgoing line 13 cancel each other, so that the eddy current loss generated by a transformer metal shell is reduced.

The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides a transformer coil goes out first magnetic field and offsets structure, its built-in transformer housing, its characterized in that, transformer coil go out first magnetic field offset structure include: a coil and a clamping component;

the clamping assembly comprises a base plate, a guide block and a cover plate, the base plate is made of aluminum alloy, the back surface of the base plate is fixedly connected with the transformer shell, a first clamping groove which is sunken towards the back surface of the base plate and penetrates through the upper end surface and the lower end surface of the base plate is arranged in the middle of the front surface of the base plate, a plurality of clamping holes which are sequentially arranged from top to bottom are formed in the left side and the right side of the front surface of the base plate, a plurality of abdicating grooves are formed in the back surface of the base plate, and the abdicating grooves are communicated with the clamping holes; the guide block is an insulator, the guide block is arranged in the first clamping groove and fixedly connected with the first clamping groove, two guide grooves formed by sinking towards the back surface of the guide block are arranged on the front surface of the guide block, the two guide grooves are vertically arranged side by side, the distance between the adjacent sides of the two guide grooves is 2-3 mm, the two guide grooves penetrate through the upper end surface and the lower end surface of the guide block, and the two guide grooves are clamped with the first outgoing line and the second outgoing line in a one-to-one correspondence manner; the apron is the insulator, the left and right sides at the back of apron all is provided with a plurality of joint heads that from top to bottom arrange in proper order, and is a plurality of but joint head one-to-one is with a plurality of joint hole joint.

2. The transformer coil outgoing magnetic field canceling structure of claim 1, wherein the snap fitting is in interference fit with the snap fitting hole.

3. The transformer coil outgoing magnetic field canceling structure according to claim 2, wherein an inner diameter of the engaging hole is gradually increased from a center thereof to both ends thereof; each clamping joint comprises a round table and a hemispherical head, one end face of the round table is fixedly connected with the back face of the cover plate, the other end face of the round table is fixedly connected with the plane end of the hemispherical head in a coaxial mode, the outer diameter of the round table is gradually increased from one end close to the cover plate to one end close to the hemispherical head, the round table is smoothly connected with the hemispherical head, and the maximum outer diameter of the round table is larger than the minimum inner diameter of the clamping hole.