A transformer single-side oil-conducting continuous coil structure suitable for special environments

Abstract

A transformer single-side oil-conducting continuous coil structure suitable for special environments includes a first paper coil, a second paper coil, a first cushion block, and a second cushion block; the second paper coil is placed at the first and last sections A of the transformer coil, on the lower side of the first and third sections of the first section and on the upper side of the last and third sections of the last section; the second cushion block is placed at the first and last sections A of the transformer coil, on the lower side of the first and fourth sections of the first section and on the upper side of the last and fourth sections of the last section; the first cushion block and the second paper coil are placed on both sides of the coil at the middle connecting section C of the transformer coil; the second cushion block is placed at the connecting and interrupting section D of the transformer coil. The thickness of the first paper coil is less than the thickness of the second paper coil, less than the thickness of the first cushion block, and less than the thickness of the second cushion block; while ensuring the heat dissipation requirements of the coil, a thinner paper coil is used to replace the thicker cushion block on one side of the continuous coil coil, which is suitable for use in areas that are in an unsaturated state for a long time, and has good economy and practicality.

Description

Technical Field

[0001] The invention relates to the technical field of transformers, and in particular to a transformer single-side oil-conducting continuous coil structure suitable for special environments. Background Art

[0002] At present, there are few industrial enterprises in most parts of Africa, and the transformer load is mostly for residential and lighting electricity. The transformer load has been in an unsaturated state for a long time, and the transformer heating condition has been lower than the domestic level for a long time.

[0003] like Figure 7 As shown in the figure, the continuous coil usually uses 4.5mm thick pads on both sides of the coil at the first and last four sections (A area) of the coil, 3mm thick pads on both sides of the coil at the normal section (B area) of the coil, 4.5mm thick pads on both sides of the coil at the middle section (C area) of the coil, and 6mm thick pads at the coil tapping interruption (D area). This conventional continuous coil is relatively wasteful in the use of materials, and the coil height is relatively large, so that the core window height and the height of the entire transformer are relatively large. The new form of single-side oil-conducting continuous coil has been improved and optimized for the transformer load status in most parts of Africa, and has achieved good results. Summary of the invention

[0004] In order to solve the technical problems raised by the background technology, the present invention provides a transformer single-side oil-conducting continuous coil structure suitable for special environments. While ensuring the heat dissipation requirements of the coil, a thinner paper coil is used to replace the thicker pad on one side of the continuous coil bobbin, and the axial height of the coil is reduced, thereby reducing the core window height and the height of the entire transformer. It is used in areas in Africa where the load is in an unsaturated state for a long time, and has good economy and practicality.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A transformer single-side oil-conducting continuous coil structure suitable for special environments includes a transformer coil, a paper coil and a cushion block, wherein the paper coil includes a first paper coil and a second paper coil, and the cushion block includes a first cushion block and a second cushion block; the thickness of the first paper coil is less than the thickness of the second paper coil, the thickness of the second paper coil is less than the thickness of the first cushion block, and the thickness of the first cushion block is less than the thickness of the second cushion block;

[0007] Place a second paper ring at the beginning and end of the transformer coil, at the bottom of the first and third coils and at the top of the last and third coils.

[0008] Place a second spacer at the beginning and end section A of the transformer coil, on the lower side of the 2nd and 4th coils at the beginning and on the upper side of the 2nd and 4th coils at the end;

[0009] At the middle connecting section C of the transformer coil, a first cushion block and a second paper ring are placed on both sides of the coil cake respectively;

[0010] Place a second spacer at the tapping interruption section D of the transformer coil;

[0011] A first paper ring and a first spacer are placed on both sides of the coil at the transformer coil section B except for the above-mentioned A, C, and D;

[0012] In the above arrangement, the pads and paper rings are arranged alternately.

[0013] Furthermore, the thickness of the first paper ring is 1.0 mm; the thickness of the second paper ring is 2.0 mm; the thickness of the first cushion block is 3.0 mm; and the thickness of the second cushion block is 4.5 mm.

[0014] Furthermore, the first paper ring and the second paper ring are both annular structures rolled up from paperboard.

[0015] Furthermore, the first cushion block and the second cushion block are both a plurality of solid blocks pressed from cardboard and evenly distributed along the circumference, and the fan-shaped area between two adjacent solid blocks is the oil flow area.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The design structure of the single-sided oil-conducting continuous coil of the present invention replaces the thicker pad on one side of the continuous coil coil with a thinner paper coil, while reducing the thickness of the pad for oil conduction on the other side of the continuous coil coil. The paper coil is a closed structure oil flow area, while the pad has an oil flow area. While ensuring the heat dissipation requirements of the coil, it not only saves the material cost and labor cost of the transformer, but also reduces the axial height of the coil, thereby reducing the core window height and the height of the entire transformer, reducing the volume of the transformer, and reducing the weight of the transformer. It is used in areas in Africa where the load is in an unsaturated state for a long time, and has good economy and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of a single-side oil-conducting continuous coil of the present invention;

[0019] Figure 2 A top view of the first paper ring and the second paper ring structure of the present invention;

[0020] Figure 3 It is a front view of the first paper ring and the second paper ring structure of the present invention;

[0021] Figure 4 It is an overall structural diagram of the first cushion block and the second cushion block of the present invention;

[0022] Figure 5 A top view of the solid block structure of the first cushion block and the second cushion block of the present invention;

[0023] Figure 6 It is a front view of the solid block structure of the first cushion block and the second cushion block of the present invention;

[0024] Figure 7 This is the structural diagram of the single-sided oil-conducting continuous coil mentioned in the background technology.

[0025] In the figure: 1-transformer coil (including multiple coils) 2-second paper ring 3-second pad (4.5mm thick) 4-first paper ring 5-first pad (3.0mm thick) 6-inner support bar 7-outer support bar 8-paper tube 9-solid block 10-installation groove one 11-installation groove two 12-6mm thick pad. DETAILED DESCRIPTION

[0026] The specific implementation modes provided by the present invention are described in detail below with reference to the accompanying drawings.

[0027] like Figure 1 As shown, a transformer single-side oil-conducting continuous coil structure suitable for special environments includes a transformer coil 1, and also includes a first paper ring 4, a second paper ring 2, a first cushion block 5 and a second cushion block 3; and the thickness of the first paper ring 4 is less than the thickness of the second paper ring 2, the thickness of the second paper ring 2 is less than the thickness of the first cushion block 5, and the first cushion block 5 is less than the thickness of the second cushion block 3.

[0028] A second paper ring 2 is placed at the beginning and end section A of the transformer coil 1, on the lower side of the first and third coils and on the upper side of the first and third coils from the end.

[0029] At the beginning and end section A of the transformer coil 1, a second spacer 3 is placed on the lower side of the 2nd and 4th coils at the beginning and on the upper side of the 2nd and 4th coils at the end.

[0030] At the middle connecting section C of the transformer coil 1, a first cushion block 5 and a second paper ring 2 are placed on both sides of the coil.

[0031] A second spacer 3 is placed at the tapping interruption section D of the transformer coil 1 .

[0032] Except for the above-mentioned A, C, and D, the first paper ring 4 and the first spacer 5 are respectively placed on both sides of the coil at B of the transformer coil 1 section.

[0033] The thickness of the first paper ring 4 is 1.0 mm; the thickness of the second paper ring 2 is 2.0 mm; the thickness of the first cushion block 5 is 3.0 mm; and the thickness of the second cushion block 4 is 4.5 mm.

[0034] In the above arrangement, the cushion blocks (including the first cushion block 5 and the second cushion block 3) and the paper rings (including the first paper ring 4 and the second paper ring 2) are arranged alternately.

[0035] like Figure 2-3As shown, the first paper ring 4 and the second paper ring 2 have the same structure, and are both annular structures rolled up from paperboard.

[0036] like Figure 4-6 As shown, the first cushion block 5 and the second cushion block 4 have the same structure, both of which are multiple solid blocks 9 pressed from paperboard, evenly distributed along the circumference, and the fan-shaped area between two adjacent solid blocks 9 is the oil flow area. The inner support bar 6 is evenly distributed and glued to the paper tube 8 inside the transformer coil, and the solid block is installed on the inner support bar 6 through the second mounting groove 11, and is fixed by the outer support bar 7 through the first mounting groove 10. The fan-shaped area between the solid blocks 9 is the oil flow area, and the part of the paper coil (including the first paper coil 4 and the second paper coil 2) has no oil flow area.

[0037] The design structure of the single-sided oil-conducting continuous coil of the present invention replaces the thicker pad on one side of the continuous coil coil with a thinner paper coil, while reducing the thickness of the pad for oil conduction on the other side of the continuous coil coil. The paper coil is a closed structure oil flow area, while the pad has an oil flow area. While ensuring the heat dissipation requirements of the coil, it not only saves the material cost and labor cost of the transformer, but also reduces the axial height of the coil, thereby reducing the core window height and the height of the entire transformer, reducing the volume of the transformer, and reducing the weight of the transformer. It is used in areas in Africa where the load is in an unsaturated state for a long time, and has good economy and practicality.

[0038] The above embodiments are implemented based on the technical solution of the present invention, and detailed implementation methods and specific operation processes are given, but the protection scope of the present invention is not limited to the above embodiments. The methods used in the above embodiments are conventional methods unless otherwise specified.

Claims

1. A transformer single-side oil-conducting continuous coil structure suitable for special environments, comprising a transformer coil, characterized in that: It also includes a paper ring and a pad, the paper ring includes a first paper ring and a second paper ring, the pad includes a first pad and a second pad; the thickness of the first paper ring is less than the thickness of the second paper ring, the thickness of the second paper ring is less than the thickness of the first pad, and the thickness of the first pad is less than the thickness of the second pad; Place a second paper ring at the beginning and end of the transformer coil, at the bottom of the first and third coils and at the top of the last and third coils. Place a second spacer at the beginning and end section A of the transformer coil, on the lower side of the 2nd and 4th coils at the beginning and on the upper side of the 2nd and 4th coils at the end; At the middle connecting section C of the transformer coil, a first cushion block and a second paper ring are placed on both sides of the coil cake respectively; Place a second spacer at the tapping interruption section D of the transformer coil; A first paper ring and a first spacer are placed on both sides of the coil at the transformer coil section B except for the above-mentioned A, C, and D. In the above arrangement, the pads and paper circles are arranged alternately; The first paper ring and the second paper ring are both annular structures rolled up from paperboard; The first cushion block and the second cushion block are both a plurality of solid blocks pressed from cardboard and evenly distributed along the circumference, and the fan-shaped area between two adjacent solid blocks is the oil flow area.

2. The transformer single-side oil-conducting continuous coil structure suitable for special environments according to claim 1 is characterized in that: The thickness of the first paper ring is 1.0 mm; the thickness of the second paper ring is 2.0 mm; the thickness of the first cushion block is 3.0 mm; and the thickness of the second cushion block is 4.5 mm.

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