CN218414203U

CN218414203U - High-insulation track relay transformer

Info

Publication number: CN218414203U
Application number: CN202222107539.XU
Authority: CN
Inventors: 涂泽兴
Original assignee: Mianyang Juyuan Electronic Technology Co ltd
Current assignee: Mianyang Juyuan Electronic Technology Co ltd
Priority date: 2022-08-10
Filing date: 2022-08-10
Publication date: 2023-01-31
Anticipated expiration: 2032-08-10

Abstract

The utility model discloses a high insulation track relay transformer relates to transformer technical field, include: the relay transformer comprises a relay transformer shell, wherein the relay transformer shell is of a cavity structure, an epoxy resin insulating tube is arranged in the relay transformer shell, an iron core is sleeved in the epoxy resin insulating tube, a primary winding coil and a secondary winding coil are sequentially wound on the iron core from inside to outside, a polyester film is wound outside the primary winding coil, and a DMD insulating paper layer is wound outside the secondary winding coil. Has the beneficial effects that: through locating the iron core cover on the epoxy insulating tube and twine primary winding coil and secondary winding coil in proper order to the cooperation terminal block passes through the silicon rubber encapsulation, and through twine polyester film and DMD insulated paper layer respectively and be used for the spaced copper foil, realizes excellent insulating properties, can play the effect on shielding layer simultaneously, makes the wave form of transformer output more level and smooth.

Description

High-insulation track relay transformer

Technical Field

The utility model relates to a transformer technical field particularly, relates to a high insulation track relay transformer.

Background

At present, a transformer belongs to a relay transformer for an alternating current track circuit in a railway signal system, is used for impedance conversion between a track of the alternating current rectification type track circuit and an indoor track relay, is arranged in an outdoor transformer box, generally has large environmental temperature change, has large humidity change in thunderstorm seasons, damages the insulation of the relay transformer, and is more damaged by lightning stroke for many years.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

To the problem in the correlation technique, the utility model aims at providing a high insulation track relay transformer, through locating the iron core cover on the epoxy insulating tube and twine primary winding coil and secondary winding coil in proper order, and the cooperation terminal block passes through the silicon rubber encapsulation, and through winding polyester film and DMD insulating paper layer respectively and be used for the spaced copper foil, realize excellent insulating properties, can play the effect of shielding layer simultaneously, make the waveform of transformer output more level and smooth, with the above-mentioned technical problem who overcomes current correlation technique and exist.

The technical scheme of the utility model is realized like this:

a high insulation track relay transformer comprising: the relay transformer comprises a relay transformer shell, wherein the relay transformer shell is of a cavity structure, an epoxy resin insulating tube is arranged in the relay transformer shell, an iron core is sleeved in the epoxy resin insulating tube, a primary winding coil and a secondary winding coil are sequentially wound on the iron core from inside to outside, a polyester film is wound outside the primary winding coil, a DMD insulating paper layer is wound outside the secondary winding coil, and copper foils for spacing are arranged between the polyester film and the DMD insulating paper layer;

the top end and the bottom end of the iron core are respectively provided with an insulated metal plate, the insulated metal plates are respectively sleeved on the epoxy resin insulating tube, the top end of the relay transformer shell is provided with a terminal board, the top end of the terminal board is provided with a wire holder, the wire holder is respectively and electrically connected with the lead of the primary winding coil and the lead of the secondary winding coil, and silicon rubber is filled between the relay transformer shell and the iron core.

Further, the iron core is an annular core.

Further, the primary winding coil and the secondary winding coil are high-strength enameled wires respectively.

Further, the thickness of the polyester film is 0.1 mm-0.2 mm.

Further, the thickness of the DMD insulating paper layer is 0.2 mm-0.5 mm.

Further, the terminal plate is plated with metal high-frequency porcelain.

The utility model has the advantages that:

the utility model discloses a locate epoxy insulating tube with the iron core cover on and twine primary winding coil and secondary winding coil in proper order, and the cooperation terminal block passes through the silicon rubber encapsulation, and through twine polyester film and DMD insulated paper layer respectively and be used for the spaced copper foil, realize excellent insulating properties, can play the effect of shielding layer simultaneously, make the waveform of transformer output more level and smooth, not only moisture resistance, shock resistance and resistant high low temperature, and the operation stability factor is high, lightning protection effect is good simultaneously, can effectively protect back level relay and silicon component, the cost of manufacture is low, operation safety factor is high.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a high insulation track relay transformer according to an embodiment of the present invention;

in the figure:

1. a relay transformer housing; 2. an iron core; 3. a primary winding coil; 4. a secondary winding coil; 5. a polyester film; 6. a DMD insulating paper layer; 7. a copper foil; 8. an epoxy resin insulating tube; 9. an insulating metal plate; 10. a terminal plate; 11. a wire holder; 12. and (3) silicon rubber.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.

According to the utility model discloses an embodiment provides a high insulation track relay transformer.

As shown in fig. 1, a high-insulation track relay transformer includes: the relay transformer comprises a relay transformer shell 1, wherein the relay transformer shell 1 is of a cavity structure, an epoxy resin insulating tube 8 is arranged in the relay transformer shell 1, an iron core 2 is sleeved on the epoxy resin insulating tube 8, a primary winding coil 3 and a secondary winding coil 4 are sequentially wound on the iron core 2 from inside to outside, a polyester film 5 is wound on the outer portion of the primary winding coil 3, a DMD insulating paper layer 6 is wound on the outer portion of the secondary winding coil 4, and a copper foil 7 used for spacing is arranged between the polyester film 5 and the DMD insulating paper layer 6;

the top and the bottom of iron core 2 are equipped with insulating metal sheet 9 respectively, and insulating metal sheet 9 overlaps respectively and locates on the epoxy insulating tube 8, and 1 top of relay transformer casing is equipped with terminal block 10, and the terminal block 10 top is equipped with connection terminal 11, and connection terminal 11 respectively with the lead wire electric connection of primary winding coil 3 and secondary winding coil 4, it has silicon rubber 12 to fill between relay transformer casing and the iron core 2.

Wherein, the iron core 2 is an annular core.

By means of the above-mentioned scheme, through locating iron core 2 cover on epoxy insulating tube 8 and twine primary winding coil 3 and secondary winding coil 4 in proper order, and cooperate terminal block 10 to pass through silicon rubber 12 encapsulation, and through twine polyester film 5 and DMD insulating paper layer 6 respectively and be used for spaced copper foil 7, realize excellent insulating properties, can play the effect of shielding layer simultaneously, make the wave form of transformer output more level and smooth, not only moisture resistance, shock resistance and high and low temperature resistance, and the operation stability factor is high, simultaneously the lightning protection is effectual, can effectively protect back level relay and silicon component, the cost of manufacture is low, the operation factor of safety is high.

In addition, the primary winding coil 3 and the secondary winding coil 4 are high-strength enameled wires respectively, and the thickness of the polyester film 5 is 0.1 mm-0.2 mm. The thickness of the DMD insulating paper layer 6 is 0.2 mm-0.5 mm.

According to the technical scheme, the high-strength enameled wire can adopt vacuum impregnation insulating paint, so that the insulating strength is improved, meanwhile, the primary interstage capacitance is greatly reduced, and the high impedance is presented to lightning shock waves by winding the polyester film 5, the DMD insulating paper layer 6 and the copper foil 7 used for spacing, so that the electrostatic isolation and attenuation effects are achieved.

The terminal plate 10 is a high-frequency metallized ceramic.

According to the technical scheme, the wire holder 11 is welded on the terminal board 10 and is electrically connected with the leads of the primary winding coil 3 and the secondary winding coil 4 in the metal holes formed in the terminal board 10, the terminal board 10 and the relay transformer shell 1 are hermetically welded and packaged by silicon rubber, and the totally-enclosed type is adopted, so that the maintenance can be completely avoided, the regular repair is cancelled, and the cost is saved.

To sum up, with the help of the above technical scheme of the utility model, can realize following effect:

through locating iron core 2 cover on epoxy insulating tube 8 and twine primary winding coil 3 and secondary winding coil 4 in proper order, and cooperation terminal block 10 passes through silicon rubber 12 encapsulation, and through twine polyester film 5 and DMD insulating paper layer 6 respectively and be used for spaced copper foil 7, realize outstanding insulating properties, not only moisture resistance, shock resistance and resistant high low temperature, and the operation stability factor is high, simultaneously the lightning protection is effectual, can effectively protect back level relay and silicon component, the cost of manufacture is low, operation factor of safety is high.

The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high insulation track relay transformer, comprising: the relay transformer comprises a relay transformer shell (1), wherein the relay transformer shell (1) is of a cavity structure, an epoxy resin insulating tube (8) is arranged in the relay transformer shell (1), an iron core (2) is sleeved on the epoxy resin insulating tube (8), a primary winding coil (3) and a secondary winding coil (4) are sequentially wound on the iron core (2) from inside to outside, a polyester film (5) is wound outside the primary winding coil (3), a DMD insulating paper layer (6) is wound outside the secondary winding coil (4), and copper foils (7) used for spacing are arranged between the polyester film (5) and the DMD insulating paper layer (6);

the top end and the bottom end of the iron core (2) are respectively provided with an insulating metal plate (9), the insulating metal plates (9) are respectively sleeved on the epoxy resin insulating tube (8), the top end of the relay transformer shell (1) is provided with a terminal board (10), the top end of the terminal board (10) is provided with a wiring seat (11), the wiring seat (11) is respectively and electrically connected with the lead wires of the primary winding coil (3) and the secondary winding coil (4), and silicon rubber (12) is filled between the relay transformer shell and the iron core (2).

2. A high insulation track relay transformer according to claim 1, characterized in that said iron core (2) is a toroidal core.

3. The high-insulation track relay transformer according to claim 2, characterized in that the primary winding coil (3) and the secondary winding coil (4) are high-strength enameled wires respectively.

4. A high insulation track relay transformer according to claim 1, characterized in that the thickness of said polyester film (5) is 0.1 mm-0.2 mm.

5. A high insulation track relay transformer according to claim 4, characterized in that the thickness of said DMD insulation paper layer (6) is 0.2 mm-0.5 mm.

6. The high-insulation track relay transformer according to claim 1, wherein the terminal board (10) is a metal-plated high-frequency porcelain.