High-voltage-resistant pulse transformer

Abstract

According to the high-voltage-resistant pulse transformer, a containing area is arranged on a shell, so that an iron core assembly can be installed on the shell, an iron core is arranged to be in an annular shape, a worker can wind a primary high-voltage-resistant wire on the iron core more conveniently, and after the primary high-voltage-resistant wire is wound on the iron core, the primary high-voltage-resistant wire is wound on the iron core. A worker uses the insulating film to wrap the iron core and the primary high-voltage-resistant wire, then the secondary high-voltage-resistant wire is wound on the insulating film, the primary high-voltage-resistant wire and the secondary high-voltage-resistant wire both adopt three layers of insulating wires, and the three layers of insulating wires have the characteristic of high insulating strength. In the embodiment, the safety and the reliability of the primary high-voltage-resistant wire and the secondary high-voltage-resistant wire can be improved, so that the high-voltage-resistant performance of the pulse transformer can reach more than 15kv, and the requirements of high-voltage-resistant projects can be met.

Description

Technical Field

[0001] The utility model relates to the field of transformers, in particular to a high-voltage-resistant pulse transformer. Background Art

[0002] Pulse transformers are widely used in thyristor drives, ultra-high voltage projects such as high-speed railways, subways, and military industries. They are an important electronic component. In a high-frequency environment, they can transmit and process high-frequency pulse signals, with less loss during transmission, improving the energy conversion efficiency, having high stability, being able to work stably in a relatively complex environment, and having an extremely fast response speed. However, the high-voltage resistance performance of pulse transformers on the market is difficult to meet the requirements of high-voltage-resistant projects. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a high-voltage-resistant pulse transformer.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A high-voltage-resistant pulse transformer includes: a housing, on which a receiving area is provided; a core assembly, which is arranged on the receiving area. The core assembly includes a core, a primary high-voltage-resistant wire, an insulating film, and a secondary high-voltage-resistant wire arranged in sequence. The primary high-voltage-resistant wire is wound around the core, the insulating film is wrapped on the surface of the primary high-voltage-resistant wire, and the secondary high-voltage-resistant wire is wound around the insulating film.

[0006] In one embodiment, the shape of the core is set to be annular.

[0007] In one embodiment, the primary high-voltage-resistant wire and the secondary high-voltage-resistant wire are three-layer insulated wires.

[0008] In one embodiment, a reinforcing sleeve is arranged on the outer surface of the secondary high-voltage-resistant wire.

[0009] In one embodiment, the reinforcing sleeve is a Teflon sleeve.

[0010] In one embodiment, limiting parts are respectively arranged on both sides of the housing, and a plurality of pins are arranged on the limiting parts, and the pins are connected to a PCB board.

[0011] In one embodiment, limiting holes are opened on the pins.

[0012] In one embodiment, sealing glue is arranged in the receiving area.

[0013] In one embodiment, the sealing glue is 808A / B glue.

[0014] In one embodiment, an outlet is provided on the insulating film, and the head and tail of the primary high-voltage resistant wire are passed through the outlet.

[0015] Compared with the prior art, the present utility model has at least the following advantages:

[0016] The high-voltage resistant pulse transformer of the present utility model has a receiving area provided on the outer shell, so that the iron core assembly can be installed on the outer shell. By setting the shape of the iron core to be annular, it is more convenient for workers to wind the primary high-voltage resistant wire around the iron core. After winding the primary high-voltage resistant wire around the iron core, the workers use an insulating film to wrap the iron core and the primary high-voltage resistant wire, and then wind the secondary high-voltage resistant wire around the insulating film. Both the primary high-voltage resistant wire and the secondary high-voltage resistant wire adopt triple-insulated wires, and the triple-insulated wires have the characteristic of high insulation strength. In this embodiment, the safety and reliability of the primary high-voltage resistant wire and the secondary high-voltage resistant wire can be improved. Thus, the high-voltage resistant performance of the pulse transformer can reach more than 15 kV, which can meet the requirements of high-voltage resistant projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below.

[0018] Figure 1 Schematic diagram of the structure of the iron core assembly of the high-voltage resistant pulse transformer in an embodiment of the present utility model;

[0019] Figure 2 For Figure 1 Cross-sectional view of the secondary high-voltage resistant wire of the iron core assembly in

[0020] Figure 3 Front view of the outer shell of the high-voltage resistant pulse transformer in an embodiment of the present utility model;

[0021] Figure 4 Bottom view of the outer shell of the high-voltage resistant pulse transformer in an embodiment of the present utility model.

[0022] BRIEF DESCRIPTION OF THE DRAWINGS: 100. Outer shell; 110. Receiving area; 200. Iron core assembly; 210. Iron core; 220. Primary high-voltage resistant wire; 230. Insulating film; 240. Secondary high-voltage resistant wire; 241. Reinforcing sleeve; 120. Limiting part; 121. Pin; 121a. Limiting hole; 231. Outlet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings.

[0024] Please refer toFigures 1 to 4 , A high-voltage-resistant pulse transformer, comprising: a housing 100, on which a receiving area 110 is provided; a core assembly 200, which is arranged on the receiving area 110. The core assembly 200 includes a core 210, a primary high-voltage-resistant wire 220, an insulating film 230, and a secondary high-voltage-resistant wire 240 arranged in sequence. The primary high-voltage-resistant wire 220 is wound around the core 210, the insulating film 230 is wrapped on the surface of the primary high-voltage-resistant wire 220, and the secondary high-voltage-resistant wire 240 is wound around the insulating film 230.

[0025] It should be noted that by providing the receiving area 110 on the housing 100, the core assembly 200 can be installed on the housing 100. By setting the shape of the core 210 to be annular, it is more convenient for the staff to wind the primary high-voltage-resistant wire 220 around the core 210. After winding the primary high-voltage-resistant wire 220 around the core 210, the staff uses the insulating film 230 to wrap the core 210 and the primary high-voltage-resistant wire 220, and then winds the secondary high-voltage-resistant wire 240 around the insulating film 230. Both the primary high-voltage-resistant wire 220 and the secondary high-voltage-resistant wire 240 adopt three-layer insulated wires, and the three-layer insulated wires have the characteristics of high insulation strength. In this embodiment, the safety and reliability of the primary high-voltage-resistant wire 220 and the secondary high-voltage-resistant wire 240 can be improved. Thus, the high-voltage-resistant performance of the pulse transformer can reach more than 15 kv, meeting the requirements of high-voltage-resistant projects.

[0026] Please refer to Figure 2 , In one embodiment, an enhanced sleeve 241 is provided on the outer surface of the secondary high-voltage-resistant wire 240. The enhanced sleeve 241 is a Teflon sleeve, which is a plastic tube made of polytetrafluoroethylene material and has the characteristics of high temperature resistance, corrosion resistance, and high insulation. It further improves the high-voltage-resistant performance of the pulse transformer and also increases the service life of the pulse transformer.

[0027] Please refer to Figure 3 and Figure 4 , In one embodiment, limiting portions 120 are respectively provided on both sides of the housing 100, and a plurality of pins 121 are provided on the limiting portions 120. The pins 121 are connected to the PCB board.

[0028] It should be noted that the purpose of using the pins 121 to connect to the PCB board is to perform a limiting operation on the pulse transformer. Thus, it is avoided that the pulse transformer vibrates during operation. Vibration will cause loosening and damage to the structure of the pulse transformer and will also affect the insulating materials in the pulse transformer. When the insulating materials are damaged or aged accelerated during vibration, the insulation performance of the pulse transformer decreases, thereby affecting the high-voltage-resistant performance of the transformer.

[0029] Please refer to again Figure 4, in one embodiment, a positioning hole 121a is formed on the pin 121. Workers can make the pin 121 welded to the PCB through the positioning hole 121a. Workers can also use screws to pass through the positioning hole 121a to fix the pin 121 on the PCB board. Workers can also use a combination of welding and screw fixing methods to fix the pin 121 on the PCB board.

[0030] Please refer to again Figure 4 , in one embodiment, a sealant is provided in the accommodation area 110. The sealant is 808 A / B glue, and the 808 A / B glue is made by mixing 808 A glue and 808 B glue. During the mixing process, workers need to fully stir the 808 A glue and 808 B glue. The made 808 A / B glue has good insulation and can be naturally cured at room temperature. Thus, the high-voltage resistance performance of the pulse transformer can be further improved. The 808 A / B glue also has good moisture-proof performance and can effectively protect the pulse transformer from moisture, thereby improving the service life of the pulse transformer. Using the 808 A / B glue to pot the accommodation area 110 can further prevent the pulse transformer from vibrating during operation.

[0031] Please refer to again Figure 1 , in one embodiment, a wire outlet 231 is formed on the insulating film 230. The head and tail of the primary high-voltage resistant wire 220 are passed through the wire outlet 231. The head and tail of the primary high-voltage resistant wire 220 are passed through the wire outlet 231. With such a setting, the head and tail of the primary high-voltage resistant wire 220 can pass through the wire outlet 231 to penetrate the insulating film 230 and be connected to other components.

[0032] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A high voltage pulse transformer, characterized in that: include: A housing is provided on the housing; An iron core assembly, wherein the iron core assembly is arranged on the accommodating area, and the iron core assembly includes an iron core, a primary high-voltage wire, an insulating film and a secondary high-voltage wire arranged in sequence, wherein the primary high-voltage wire is wound on the iron core, the insulating film is wrapped around the surface of the primary high-voltage wire, and the secondary high-voltage wire is wound on the insulating film.

2. The high voltage pulse transformer according to claim 1, characterized in that: The core is arranged to be in a ring shape.

3. The high voltage pulse transformer according to claim 1, characterized in that: The primary high-voltage-resistant wire and the secondary high-voltage-resistant wire are three-layer insulated wires.

4. The high voltage pulse transformer according to claim 1, characterized in that: The outer surface of the secondary high-voltage wire is provided with a reinforcing sleeve.

5. The high voltage pulse transformer according to claim 4, characterized in that: The reinforced sleeve is a Teflon sleeve.

6. The high voltage pulse transformer according to claim 1, characterized in that: Limiting parts are respectively arranged on both sides of the shell, and a plurality of pins are arranged on the limiting parts, and the pins are connected to the PCB board.

7. The high voltage pulse transformer according to claim 6, characterized in that: A limiting hole is provided on the pin.

8. The high voltage pulse transformer according to claim 1, characterized in that: Sealant is arranged in the accommodating area.

9. The high voltage pulse transformer according to claim 8, characterized in that: The sealant is 808A / B glue.

10. The high voltage pulse transformer according to claim 1, characterized in that: The insulating film is provided with a wire outlet, and the wire head and wire tail of the primary high-voltage wire are passed through the wire outlet.

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