CN213635661U

CN213635661U - High-voltage-resistant honeycomb transformer

Info

Publication number: CN213635661U
Application number: CN202022925080.5U
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 resistant honeycomb transformer, which comprises a primary coil, a secondary coil and a magnetic core; the primary coil comprises a winding bracket and a primary winding; two ends of the winding bracket penetrate to form a mounting hole, and the primary winding is sleeved outside the winding bracket; the secondary coil comprises an insulating layer and a secondary winding, the insulating layer covers the primary winding, the secondary winding is formed by winding in a honeycomb winding method, and the secondary winding is sleeved outside the insulating layer; the magnetic core is arranged in the mounting hole in a penetrating mode. Establish outside primary coil through establishing secondary coil cover, cooperate secondary winding to adopt the honeycomb formula to wind the formation of method again for this product structural design is reasonable, can be able to bear or endure more than 10Kv, and high pressure resistance can be very good, satisfies the needs of using.

Description

High-voltage-resistant honeycomb transformer

Technical Field

The utility model relates to a coil field technique especially indicates a high pressure resistant honeycomb formula transformer.

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 transformers.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to the deficiency of the prior art, and the main objective of the present invention is to provide a high voltage resistant honeycomb transformer, which can effectively solve the problem of poor high voltage resistance of the prior art transformer.

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

a high voltage resistant honeycomb transformer comprises a primary coil, a secondary coil and a magnetic core; the primary coil comprises a winding bracket and a primary winding; two ends of the winding bracket penetrate to form a mounting hole, and the primary winding is sleeved outside the winding bracket; the secondary coil comprises an insulating layer and a secondary winding, the insulating layer covers the primary winding, the secondary winding is formed by winding in a honeycomb winding method, and the secondary winding is sleeved outside the insulating layer; the magnetic core is arranged in the mounting hole in a penetrating mode.

As a preferred scheme, the winding support is made of PC material, the winding support is hollow tubular, two ends of the winding support are radially expanded to extend out to form baffle rings, each baffle ring is provided with a lead groove, the primary winding is located between the two baffle rings, the primary winding is provided with a primary lead, and the primary lead penetrates through the lead grooves and extends outwards.

Preferably, the secondary winding has a secondary lead which is 180 ° different from the primary lead.

Preferably, the primary winding is tightly wound on the winding support in the middle, the primary lead is sleeved with a Teflon sleeve, and the primary lead extends out of the winding support at the same side.

Preferably, the inner diameter of the mounting hole is 20.5mm, and the length of the winding bracket is 50.8 mm.

Preferably, the primary coil further comprises a shielding copper foil, the shielding copper foil covers the primary winding, the surface of the shielding copper foil is covered with the insulating layer, and the surface of the shielding copper foil is led out to form a ground wire.

Preferably, the secondary winding is tightly wound outside the insulating layer by adopting a honeycomb winding method, and the secondary winding has 1100 turns.

As a preferred scheme, the secondary windings are two in series connection, the secondary windings are densely wound outside the insulating layer by adopting a honeycomb winding method, and the secondary windings are 800 turns.

As a preferable scheme, the magnetic core comprises two magnetic core bodies, the two magnetic core bodies are both U-shaped, one ends of the two magnetic core bodies are spliced and positioned outside the secondary coil, and the other ends of the two magnetic core bodies are arranged in the mounting hole in a penetrating manner and spliced together.

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

establish outside primary coil through establishing secondary coil cover, cooperate secondary winding to adopt the honeycomb formula to wind the formation of method again for this product structural design is reasonable, can be able to bear or endure more than 10Kv, and high pressure resistance can be very good, satisfies the needs of using.

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 diagram of a first preferred embodiment of the present invention;

FIG. 2 is an assembled perspective view of the first preferred embodiment of the present invention;

fig. 3 is a front view of the primary coil and the secondary coil in the first preferred embodiment of the present invention;

fig. 4 is a front view of the primary coil in the first preferred embodiment of the present invention;

fig. 5 is a top view of the primary and secondary coils in the first preferred embodiment of the present invention;

fig. 6 is a top view of the primary coil in the first preferred embodiment of the present invention;

FIG. 7 is an enlarged view of the bobbin bracket according to the first preferred embodiment of the present invention;

FIG. 8 is a schematic diagram of a second preferred embodiment of the present invention;

FIG. 9 is an assembled perspective view of a second preferred embodiment of the present invention;

fig. 10 is a front view of the primary and secondary coils in a second preferred embodiment of the present invention;

fig. 11 is a front view of a primary coil in a second preferred embodiment of the present invention;

fig. 12 is a top view of the primary and secondary coils in a second preferred embodiment of the present invention;

fig. 13 is a top view of a primary coil in a second preferred embodiment of the present invention;

fig. 14 is an enlarged view of a shielding copper foil according to a second preferred embodiment of the present invention.

The attached drawings indicate the following:

10. primary coil 11 and winding support

111. Mounting hole 112, stop ring

113. Lead slot 12, primary winding

121. Primary lead 13, shielding copper foil

131. Ground wire 20, secondary coil

21. Insulating layer 22, secondary winding

221. Secondary lead wire 30, magnetic core

31. A magnetic core body.

Detailed Description

Referring to fig. 1 to 7, a specific structure of a first preferred embodiment of the present invention is shown, including a primary coil 10, a secondary coil 20 and a magnetic core 30.

The primary coil 10 comprises a winding bracket 11 and a primary winding 12; a mounting hole 111 is formed through both ends of the winding bracket 11, in this embodiment, the winding bracket 11 is made of PC material, the winding bracket 11 is in a hollow tubular shape, both ends of the winding bracket 11 are radially expanded to extend a retaining ring 112, a lead slot 113 is formed on the retaining ring 112, the inner diameter of the mounting hole 111 is 20.5mm, and the length of the winding bracket 11 is 50.8 mm; the primary winding 12 is sleeved outside the winding support 11, in this embodiment, the primary winding 12 is located between the two baffle rings 112, the primary winding 12 is provided with a primary lead 121, the primary lead 121 penetrates through the lead slot 113 to extend outwards, the primary winding 12 is wound by using 0.1 × 50 (the maximum outer diameter is ∅ 0.98.98 mm) filament-covered wires in 40 turns in one layer, 2 layers of Kapton adhesive tapes with the width of 48mm are wrapped, the primary lead 121 is sleeved with a teflon sleeve, the primary winding 12 is centrally and densely wound on the winding support 11, and the primary lead 121 extends out of the winding support 11 on the same side.

The secondary coil 20 comprises an insulating layer 21 and a secondary winding 22, the insulating layer 21 covers the primary winding 12, in the embodiment, the insulating layer 21 is composed of an insulating film with a thickness of 3.5 layers and a thickness of 0.125mm and a layer of Kapton adhesive tape; the secondary winding 22 is formed by winding in a honeycomb winding manner, the secondary winding 22 is sleeved outside the insulating layer 21, the secondary winding 22 is provided with a secondary lead-out wire 221, the phase difference between the secondary lead-out wire 221 and the primary lead 121 is 180 degrees, the secondary winding 22 is densely wound outside the insulating layer 21 in the honeycomb winding manner, and the number of the secondary winding 22 is 1100.

The magnetic core 30 is inserted into the mounting hole 111, in this embodiment, the magnetic core 30 includes two magnetic core bodies 31, the two magnetic core bodies 31 are both U-shaped, one end of each of the two magnetic core bodies 31 is spliced and located outside the secondary coil 20, and the other end of each of the two magnetic core bodies 31 is inserted into the mounting hole 111 and spliced together.

Detailed description the assembly method of this embodiment is as follows:

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

when the primary coil 10 is manufactured, the winding support 11 is taken, then the primary winding 12 is wound outside the winding support 11, the primary winding 12 is centrally and densely wound on the winding support 11, the primary winding 12 is wound by 40 turns in a layer, 2 layers of Kapton adhesive tapes with the width of 48mm are wrapped, a Teflon sleeve is sleeved on the primary lead 121, the primary lead 121 penetrates through the lead groove 113 to extend outwards, the lead support 11 extends out from the same side, and the tail of the lead is tinned by 5-6 mm.

When the secondary coil 20 is manufactured, the primary coil 10 is taken, then the insulating layer 21 is coated outside the primary coil 10, then the secondary winding 22 is wound on the surface of the insulating layer 21, the secondary winding 22 is tightly wound outside the insulating layer 21 in the middle by adopting a honeycomb winding method, the secondary winding 22 has 1100 turns, and the wire tail is soldered for 5-6 mm.

Then, one ends of the two magnetic core bodies 31 are spliced and positioned outside the secondary coil 20, the other ends of the two magnetic core bodies 31 penetrate through the mounting hole 111 and are spliced together, the difference between the secondary lead-out wire 221 and the primary lead 121 is 180 degrees, and the magnetic core body 31 is UR 64/40/20.

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

Referring to fig. 8 to 14, a specific structure of a second preferred embodiment of the present invention is shown, which is basically the same as the specific structure of the first preferred embodiment, except that:

the primary coil 10 further comprises a shielding copper foil 13, the shielding copper foil 13 covers the primary winding 12, the surface of the shielding copper foil 13 is covered with an insulating layer 21, and a ground wire 131 is led out from the surface of the shielding copper foil 23; in this embodiment, the insulating layer 21 is composed of six layers of insulating films and one layer of Kapton tape, and a circle of Kapton tape is wrapped and fixed; the secondary winding 22 is two in series, the secondary winding 22 is densely wound outside the insulating layer 21 by adopting a honeycomb winding method, and the secondary winding 22 has 800 turns.

Detailed description the assembly method of this embodiment is as follows:

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

when the primary coil 10 is manufactured, the winding support 11 is taken, then the primary winding 12 is wound outside the winding support 11, the primary winding 12 is tightly wound on the winding support 11 in the middle, the primary winding 12 is wound by 40 turns in layers, the shielding copper foil 13 is covered outside the primary winding 12, the primary lead 121 is sleeved with a Teflon sleeve, the primary lead 121 penetrates through the lead groove 113 to extend outwards, the lead support 11 extends out from the same side, and the tail of the lead is soldered for 5-6 mm.

When the secondary coil 20 is manufactured, the primary coil 10 is taken, then the shielding copper foil 13 is wrapped by the insulating layer 21, two secondary windings 22 are wound on the surface of the insulating layer 21, the two secondary windings 22 are both centrally and densely wound outside the insulating layer 21 by adopting a honeycomb winding method, the number of the secondary windings 22 is 800, and the wire tail is soldered by 5-6 mm.

The utility model discloses a design focus lies in:

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. The utility model provides a high pressure resistant honeycomb formula transformer which characterized in that: comprises a primary coil, a secondary coil and a magnetic core; the primary coil comprises a winding bracket and a primary winding; two ends of the winding bracket penetrate to form a mounting hole, and the primary winding is sleeved outside the winding bracket; the secondary coil comprises an insulating layer and a secondary winding, the insulating layer covers the primary winding, the secondary winding is formed by winding in a honeycomb winding method, and the secondary winding is sleeved outside the insulating layer; the magnetic core is arranged in the mounting hole in a penetrating mode.

2. The high voltage tolerant honeycomb transformer of claim 1, wherein: the winding support is made of PC materials and is in a hollow tubular shape, two ends of the winding support are radially expanded to extend to form retaining rings, lead grooves are formed in the retaining rings, the primary winding is located between the two retaining rings and provided with primary leads, and the primary leads penetrate through the lead grooves and extend outwards.

3. The high voltage tolerant honeycomb transformer of claim 2, wherein: the secondary winding has a secondary lead that is 180 ° out of phase with the primary lead.

4. The high voltage tolerant honeycomb transformer of claim 2, wherein: the primary winding is tightly wound on the winding support in the middle, the primary lead is sleeved with a Teflon sleeve, and the primary lead extends out of the winding support at the same side.

5. The high voltage tolerant honeycomb transformer of claim 1, wherein: the internal diameter of the mounting hole is 20.5mm, and the length of the winding support is 50.8 mm.

6. The high voltage tolerant honeycomb transformer of claim 1, wherein: the primary coil further comprises a shielding copper foil, the shielding copper foil covers the primary winding, the surface of the shielding copper foil is covered with an insulating layer, and a ground wire is led out of the surface of the shielding copper foil.

7. The high voltage tolerant honeycomb transformer of claim 1, wherein: the secondary winding is densely wound outside the insulating layer by adopting a honeycomb winding method, and the number of the secondary winding is 1100.

8. The high voltage tolerant honeycomb transformer of claim 1, wherein: the secondary windings are two in series connection, the secondary windings are tightly wound outside the insulating layer by adopting a honeycomb winding method, and the secondary windings are 800 turns.

9. The high voltage tolerant honeycomb transformer of claim 1, wherein: the magnetic core comprises two magnetic core bodies, the two magnetic core bodies are both U-shaped, one ends of the two magnetic core bodies are spliced and positioned outside the secondary coil, and the other ends of the two magnetic core bodies are arranged in the mounting hole in a penetrating mode and spliced together.