CN213635659U

CN213635659U - High-voltage honeycomb coil structure

Info

Publication number: CN213635659U
Application number: CN202022925043.4U
Authority: CN
Inventors: 郭晓健
Original assignee: Dongguan Taisi Electromagnetic Components Co ltd
Current assignee: Dongguan Taisi Electromagnetic Components Co ltd
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2021-07-06
Anticipated expiration: 2030-12-09

Abstract

The utility model discloses a high-voltage honeycomb coil structure, which comprises a primary winding and a secondary winding; the primary winding comprises a primary winding bracket and a primary coil, wherein the primary winding bracket is provided with a mounting hole for mounting the magnetic core; the primary wire is sheathed outside the primary winding bracket; the secondary winding comprises a secondary winding support and a plurality of secondary coils, the secondary winding support is sleeved outside the primary winding, the plurality of secondary coils are sleeved on the secondary winding support and are arranged at intervals along the axial direction of the secondary winding support, the plurality of secondary coils are sequentially connected in series, and each secondary coil is formed by winding in a honeycomb winding method. Through locating secondary winding support cover outside primary winding to the cooperation utilizes a plurality of secondary solenoid to be series connection in proper order, and each secondary solenoid all adopts honeycomb formula winding to form, makes this product structural design reasonable, and compact, can be able to bear or endure more than AC voltage 10Kv, and high pressure resistance can be very good, satisfies the needs that use.

Description

High-voltage honeycomb coil structure

Technical Field

The utility model belongs to the technical field of the coil technique and specifically relates to indicate a high-pressure honeycomb coil structure.

Background

A transformer is a device for transforming ac voltage, current and impedance, and when an ac current flows through a primary winding, an ac magnetic flux is generated in an iron core (or a magnetic core), so that a voltage (or a current) is induced in a secondary winding. The transformer consists of an iron core (or a magnetic core) and a coil, wherein the coil is provided with two or more than two windings, the winding connected with a power supply is called a primary coil, and the other windings are called secondary coils.

However, the coil used in the current transformer has poor high voltage resistance due to unreasonable structural design, and cannot meet the use requirement. Therefore, there is a need for improvements in current transformer coils.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a high voltage honeycomb coil structure, which can effectively solve the problem of poor high voltage resistance of the existing transformer coil due to unreasonable structural design.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a high-voltage honeycomb coil structure comprises a primary winding and a secondary winding; the primary winding comprises a primary winding bracket and a primary coil, wherein the primary winding bracket is provided with a mounting hole for mounting the magnetic core; the primary wire is sheathed outside the primary winding bracket; the secondary winding comprises a secondary winding support and a plurality of secondary coils, the secondary winding support is sleeved outside the primary winding, the plurality of secondary coils are sleeved on the secondary winding support and are arranged at intervals along the axial direction of the secondary winding support, the plurality of secondary coils are sequentially connected in series, and each secondary coil is formed by winding in a honeycomb winding method.

As a preferred scheme, the primary winding support is a square cylinder, the mounting hole is also square, and the material of the primary winding support is epoxy glass fiber.

As a preferable scheme, the primary coil is wound in two layers, the first layer is wound in 23 turns in the middle, the second layer is wound in 22 turns for 45 turns in total, one circle of insulating adhesive tape is wrapped between the layers, two circles of insulating adhesive tape are wrapped on the outermost layer, and the same end of the primary coil is led out at the same side.

As a preferred scheme, a circle of copper foil tape wraps the primary coil, the middle of the primary coil is led out by welding through a leading-out wire, the primary coil is positioned on the outer side of the primary coil after reinforcement treatment, and the copper foil tape is wrapped with insulating paper and is plugged into an inner hole of the secondary winding for tight fit.

As a preferred scheme, the secondary winding support is a cylinder, the inner hole of the secondary winding support is circular, and the secondary winding support is made of epoxy glass fiber.

Preferably, the secondary coil is formed by winding in a honeycomb winding method.

Preferably, the number of secondary wire packets is five, and each secondary wire is wrapped by 130 turns for 650 turns.

As a preferable scheme, the secondary coil adopts litz wires and polyester wire-wrapped multi-strand insulated enameled stranded round copper wires.

Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly, can know by above-mentioned technical scheme:

through locating secondary winding support cover outside primary winding to the cooperation utilizes a plurality of secondary solenoid to be series connection in proper order, and each secondary solenoid all adopts honeycomb formula winding to form, makes this product structural design reasonable, and compact, can be able to bear or endure more than AC voltage 10Kv, and high pressure resistance can be very good, satisfies the needs that use.

To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a schematic cross-sectional view of a preferred embodiment of the present invention;

fig. 2 is a front view of the primary winding in the preferred embodiment of the invention;

fig. 3 is a side view of the primary winding in a preferred embodiment of the invention;

fig. 4 is an expanded view of the primary winding surrounded by a copper foil tape in the preferred embodiment of the present invention;

fig. 5 is a side view of the primary winding of the preferred embodiment of the present invention after winding;

FIG. 6 is a front view of the primary winding support in the preferred embodiment of the present invention;

fig. 7 is a front view of the secondary winding in the preferred embodiment of the invention;

fig. 8 is a side view of the secondary winding in a preferred embodiment of the invention;

FIG. 9 is a front view of a secondary winding support in accordance with a preferred embodiment of the present invention;

FIG. 10 is an electrical schematic of a preferred embodiment of the present invention;

fig. 11 is a rear schematic view of a transformer according to a preferred embodiment of the present invention.

The attached drawings indicate the following:

10. primary winding 11 and primary winding support

12. Primary coil 13, copper foil tape

14. Grounding lead wire 15 and insulating paper

101. Mounting hole 20, secondary winding

21. Secondary winding support 22, secondary coil

201. Inner bore 202, transition line

30. A magnetic core.

Detailed Description

Referring to fig. 1 to 11, a specific structure of a preferred embodiment of the present invention is shown, including a primary winding 10 and a secondary winding 20.

The primary winding 10 comprises a primary winding bracket 11 and a primary winding 12, wherein the primary winding bracket 11 is provided with a mounting hole 101 for mounting the magnetic core 30; the primary winding 12 is sleeved outside the primary winding support 11. In this embodiment, the primary winding frame 11 is a square column, the mounting hole 101 is also square, and the material thereof is epoxy glass fiber (FR 4/G10); the primary coil 12 is wound in two layers, the first layer is wound in 23 turns in the middle, the second layer is wound in 22 turns for 45 turns, a circle of insulating tape is wrapped between the layers, two circles of insulating tape are wrapped on the outermost layer, and the same end of the primary coil 12 is led out at the same side; the primary coil 12 is wrapped with a circle of copper foil tape 13, the middle of the primary coil is welded and led out through a grounding outgoing line 14, the primary coil 12 is located on the outer side after reinforcement treatment, and the copper foil tape 13 is wrapped with insulating paper 15 and is plugged into an inner hole of the secondary winding 20 to be tightly matched.

The secondary winding 20 includes a secondary winding support 21 and a plurality of secondary coils 22, the secondary winding support 21 is sleeved outside the primary winding 10, the plurality of secondary coils 22 are sleeved on the secondary winding support 21 and are arranged along the axial direction of the secondary winding support 21 at intervals, the plurality of secondary coils 22 are connected in series in sequence, and each secondary coil 22 is formed by winding in a honeycomb winding method. In this embodiment, the secondary winding support 21 is a cylinder, the inner hole 201 is circular, the material of the secondary winding support is epoxy glass fiber (FR 4/G10), the outer diameter of the secondary winding support 21 is 54.5mm, the inner diameter is 50mm, and the length is 61 mm; the secondary coil 22 is made of LITZ (LITZ) wire, the polyester wire is used for wrapping a plurality of strands of insulating enameled stranded round copper wires, the secondary coil 22 is formed by winding through a honeycomb four-fold-point winding method, five secondary coils 22 are provided, 130 turns of each secondary coil 22 are wound, 650 turns are counted, the transition line 202 of each secondary coil 22 is fixed through epoxy glue, and the secondary coils 22 are brushed with insulating paint. The secondary coil adopts a LITZ (LITZ) wire, and the polyester wire is used for wrapping a plurality of strands of insulating enameled stranded round copper wires.

The primary winding 10 is assembled with the secondary winding 20 and then assembled with the magnetic core 30 to complete the assembly, and then vacuum impregnation insulating paint is contained.

Detailed description the manufacturing process of this embodiment is as follows:

first, the primary winding 10 and the secondary winding 20 are manufactured:

when a primary winding 10 is manufactured, a primary winding support 11 is taken, then a primary coil 12 is wound outside the primary winding support 11, the primary coil 12 is wound in two layers, the first layer is wound in the middle for 23 turns, the second layer is wound in 22 turns for 45 turns, a circle of insulating adhesive tape is wrapped between the layers, two circles of insulating adhesive tapes are wrapped on the outermost layer, the same end and the same side are led out, the length of a lead-out wire is reserved according to requirements, an insulating sleeve is sleeved, the tail end is soldered for 5mm, a circle of copper foil tape 13 is wrapped, the middle part is welded and led out through a grounding lead-out wire 14, and the lead-out; then, wrapping NOMEX insulating paper outside the copper foil belt 13 to a proper size, plugging the NOMEX insulating paper into an inner hole 201 of the secondary winding 20 to be slightly tight, and plating tin on the tail of the wire by 5-6 mm; and finally, riveting the terminal.

When the secondary winding 20 is manufactured, the secondary winding support 21 is taken, then the secondary coils 22 are wound outside the secondary winding support 21, five secondary coils 22 are wound according to requirements, the honeycomb 4-fold point winding method is adopted, each secondary coil 22 is wound for 130 turns, the total number is 650 turns, the distance between the upper end edge and the lower end edge of each secondary coil is ensured, the outgoing line is sleeved with a PTFE sleeve, the length of the outgoing line is reserved according to requirements, and the tail end is soldered for 5 mm; then, fixing the transition line 202 of the secondary coil 22 by using epoxy glue, and brushing insulating paint on the secondary coil 22; and finally, riveting the terminal.

Then, the primary winding 10 is plugged into the inner hole 201 of the secondary winding 20, then the magnetic core 30 is installed, the difference between the outgoing lines of the primary winding 10 and the secondary winding 20 is 180 degrees, the magnetic core 30 is UU100/57/25, and the vacuum impregnation insulating paint is filled after the assembly is completed.

Tests show that the product can resist more than 10Kv of AC voltage and has very good high-voltage resistance.

The utility model discloses a design focus lies in: through locating secondary winding support cover outside primary winding to the cooperation utilizes a plurality of secondary solenoid to be series connection in proper order, and each secondary solenoid all adopts honeycomb formula winding to form, makes this product structural design reasonable, and compact, can be able to bear or endure more than AC voltage 10Kv, and high pressure resistance can be very good, satisfies the needs that use.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims

1. A high-voltage honeycomb coil structure is characterized in that: comprises a primary winding and a secondary winding; the primary winding comprises a primary winding bracket and a primary coil, wherein the primary winding bracket is provided with a mounting hole for mounting the magnetic core; the primary wire is sheathed outside the primary winding bracket; the secondary winding comprises a secondary winding support and a plurality of secondary coils, the secondary winding support is sleeved outside the primary winding, the plurality of secondary coils are sleeved on the secondary winding support and are arranged at intervals along the axial direction of the secondary winding support, the plurality of secondary coils are sequentially connected in series, and each secondary coil is formed by winding in a honeycomb winding method.

2. The high-voltage honeycomb coil structure according to claim 1, characterized in that: the primary winding support is a square cylinder, the mounting hole of the primary winding support is also square, and the primary winding support is made of epoxy glass fiber.

3. The high-voltage honeycomb coil structure according to claim 1, characterized in that: the primary coil is wound in two layers, the first layer is wound in 23 turns in the middle, the second layer is wound in 22 turns, the number of turns is 45, a circle of insulating tape is wrapped between the layers, two circles of insulating tape are wrapped on the outermost layer, and the same end of the primary coil is led out.

4. The high-voltage honeycomb coil structure according to claim 3, wherein: the primary coil is wrapped by a circle of copper foil tape, the middle of the primary coil is led out by welding through a lead-out wire, the primary coil is positioned on the outer side of the primary coil after reinforcement treatment, and the copper foil tape is wrapped by insulating paper and is stuffed into an inner hole of the secondary winding for tight fit.

5. The high-voltage honeycomb coil structure according to claim 1, characterized in that: the secondary winding support is a cylinder, an inner hole of the secondary winding support is circular, and the secondary winding support is made of epoxy glass fiber.

6. The high-voltage honeycomb coil structure according to claim 1, characterized in that: the secondary coil is formed by winding through a honeycomb winding method.

7. The high-voltage honeycomb coil structure according to claim 1, characterized in that: the number of the secondary wire packages is five, and each secondary wire is wrapped by 130 turns for 650 turns.

8. The high-voltage honeycomb coil structure according to claim 1, characterized in that: the secondary coil adopts litz wires and polyester wire-wrapped multi-strand insulated enameled stranded round copper wires.