WO2021077430A1

WO2021077430A1 - 118 kv power supply transformer

Info

Publication number: WO2021077430A1
Application number: PCT/CN2019/113466
Authority: WO
Inventors: 陈邦栋; 杨建�; 冒爱丽; 桑文磊
Original assignee: 江苏思源赫兹互感器有限公司
Priority date: 2019-10-26
Filing date: 2019-10-26
Publication date: 2021-04-29

Abstract

The present invention relates to the technical field of transformers, in particular, to a 118 KV power supply transformer, comprising a silicone rubber sleeve, a top plate, a bottom plate, a body, and a primary lead wire tube. The bottom plate is fixed at the bottom of the silicone rubber sleeve; the top plate is fixed at the top of the silicone rubber sleeve; the body is disposed in the silicone rubber sleeve and has the bottom fixed to the bottom plate; the primary lead wire tube has the top fixed to the top plate and the bottom connected to the body; the body comprises a high-voltage coil, a low-voltage coil, an iron core shaped like a Chinese character "日", and arc low-voltage shields; the iron core shaped like a Chinese character "日" is fixed on the bottom plate; the low-voltage coil is disposed on the iron core shaped like a Chinese character "日"; the top of the high-voltage coil is connected to the bottom of the primary lead wire tube; the arc low-voltage shields are circumferentially disposed on the inner side of the iron core shaped like a Chinese character "日". The power supply transformer has a compact structure and reasonable arrangement, and has the body directly disposed in the silicone rubber sleeve; thus, the size of the power supply transformer is reduced, and internal and external electric fields of the transformer are improved, thereby making electric field distribution more uniform, and ensuring the stability of the power supply transformer.

Description

A 118KV power supply transformer

Technical field

The invention relates to the technical field of transformers, in particular to a 118KV power supply transformer.

Background technique

The world's power transmission system is moving towards a more energy-saving and environmentally friendly DC transmission. For this reason, scientists are developing corresponding major power safety control equipment DC circuit breakers, and DC circuit breakers need a device that can solve energy supply problems.

The energy supply transformers in the prior art often use the transformer body to be arranged in the housing, and then the silicone rubber bushing is connected to the body housing. This structure leads to a large transformer volume, which is difficult to install when the installation space is limited. To meet the requirements, but by reducing the insulation distance, the overall stability of the transformer cannot be guaranteed. Therefore, a new structure needs to be designed to reduce the overall volume of the transformer while ensuring the overall performance of the transformer.

Summary of the invention

The technical problem to be solved by the present invention is to address the shortcomings of the prior art, and provide a 118KV energy supply transformer with compact structure and reasonable arrangement, eliminates the shell of the commonly used energy supply transformer, and makes the body directly arranged in the silicone rubber sleeve. The overall volume of the energy supply transformer is reduced, and an arc-shaped low-voltage shielding cover is arranged around the iron core to make the electric field of the transformer more uniform and ensure the stability of the energy supply transformer.

In order to solve the above technical problems, the present invention provides a 118KV power supply transformer, which includes a silicone rubber sleeve, a top plate, a bottom plate, a body and a primary lead tube. The bottom plate is arranged at the bottom of the silicone rubber sleeve. The top plate is arranged on the top of the silicone rubber sleeve, the body is arranged in the silicone rubber sleeve and the bottom is fixed on the bottom plate, and the primary lead tube is arranged above the silicone rubber sleeve inner body, The top of the primary lead pipe is fixed on the top plate, and the bottom is connected with the body;

The body includes a high-voltage coil, a low-voltage coil, a Japanese-shaped iron core and a circular arc low-voltage shielding cover. The Japanese-shaped iron core is horizontally arranged in the silicone rubber sleeve and fixed on the bottom plate. The low-voltage coil Is arranged on the Japanese-shaped iron core, the high-voltage coil is arranged outside the low-voltage coil, the top of the high-voltage coil is connected to the bottom of the primary lead pipe, and the arc low-voltage shield is arranged on the Japanese-shaped iron Around the inside of the core.

Further, the bottom surface of the Japanese-shaped iron core is fixed on the bottom plate through a plurality of support frames, and the low voltage coil is wound on the middle beam of the Japanese-shaped iron core.

Further, the number of the arc low voltage shield is four, which are respectively fixed on the inner wall around the Japanese-shaped iron core, the arc low voltage shield includes a circular arc section and a straight section, and the circular arc section is fixed on Above the straight section, the arc section is arranged on the upper surface of the outer frame of the Japanese-shaped iron core, and the straight section is in close contact with the inner wall around the Japanese-shaped iron core.

Further, a primary wiring board is installed on the top plate, the primary wiring board is provided with a high-voltage output terminal, and the high-voltage output terminal is connected to the high-voltage coil.

Specifically, the bottom plate is provided with a measuring hole, the measuring hole is arranged below the Japanese-shaped iron core, the bottom of the measuring hole is provided with a bottom cover, and the bottom cover and the bottom plate are detachable connection.

Further, a secondary wiring board is further provided on the bottom plate, and a low-voltage terminal is provided on the secondary wiring board, and the low-voltage terminal is connected to the low-voltage coil.

Further, an explosion-proof disk is also installed on the top plate, and the explosion-proof disk and the top plate are connected by bolts.

The beneficial effects of the present invention are: the energy supply transformer of the present invention has simple structure, compact and reasonable arrangement, convenient installation, maintenance and maintenance, cancels the shell part in the conventional design of the energy supply transformer, and designs the body directly in the bushing, reducing The volume of the transformer saves the installation space of the transformer, and makes the installation and transportation of the transformer more convenient and safer. In order to improve the electric field of the transformer, an arc low-voltage shielding cover is set in the body to make the electric field inside the body more uniform. Improve the stability of the entire energy supply transformer.

Description of the drawings

In order to explain the technical solution of the present invention more clearly, the following will briefly introduce the embodiments or the drawings needed in the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained from these drawings without creative work.

Figure 1 is a cross-sectional view of the structure of the energy supply transformer of the present invention;

Fig. 2 is a schematic diagram of the structure of the body part of the energy supply transformer of the present invention.

In the picture: 1-silicone rubber casing, 2-top plate, 3-bottom plate, 4-primary lead tube, 5-high voltage coil, 6-low voltage coil, 7-Japanese-shaped iron core, 8-arc low-voltage shield, 9 -Support frame, 10-primary wiring board, 11- high voltage output terminal, 12- bottom cover, 13- secondary wiring board, 14- low voltage terminal, 15- rupture disk, 81- arc section, 82- straight section.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the specification. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

In the specific embodiment of the present invention, as shown in Figures 1 to 2, the present invention specifically discloses a 118KV power supply transformer, including a silicone rubber bushing 1, a top plate 2, a bottom plate 3, a body and a primary lead tube 4 , The bottom plate 3 is arranged at the bottom of the silicone rubber sleeve 1, the top plate 2 is arranged on the top of the silicone rubber sleeve 1, the body is arranged in the silicone rubber sleeve 1 and the bottom is fixed On the bottom plate 3, the primary lead tube 4 is arranged above the inner body of the silicone rubber sleeve 1, the top of the primary lead tube 4 is fixed on the top plate 2, and the bottom is connected to the body ；

The body includes a high-voltage coil 5, a low-voltage coil 6, a Japanese-shaped iron core 7 and a circular arc low-voltage shielding cover 8. The Japanese-shaped iron core 7 is horizontally arranged in the silicone rubber sleeve 1 and fixed in the On the bottom plate 3, the bottom surface of the Japanese-shaped iron core 7 is fixed on the bottom plate 3 through a plurality of support frames 9, the low voltage coil 6 is arranged on the Japanese-shaped iron core 7, and the low voltage coil 6 is wound around On the middle beam of the Japanese-shaped iron core 7, the high-voltage coil 5 is arranged outside the low-voltage coil 6, the top of the high-voltage coil 5 is connected to the bottom of the primary lead tube 4, and the arc low-voltage shield 8 is arranged around the inner side of the Japanese-shaped iron core 7, the number of the arc low-voltage shielding cover 8 is four, which are respectively fixed on the inner wall around the Japanese-shaped iron core 7, and the arc low-voltage shielding cover 8 includes A circular arc section 81 and a straight section 82, the circular arc section 81 is fixed above the straight section 82, the circular arc section 81 is arranged on the upper surface of the outer frame of the Japanese-shaped iron core 7, and the straight section 82 is in close contact with the inner wall around the Japanese-shaped iron core 7.

A primary wiring board 10 is installed on the top plate 2, and a high-voltage output terminal 11 is provided on the primary wiring board 10, and the high-voltage output terminal 11 is connected to the high-voltage coil 5 for the output of high-voltage electricity.

The bottom plate 3 is provided with a measuring hole, the measuring hole is arranged under the Japanese-shaped iron core 7, and the bottom of the measuring hole is provided with a bottom cover 12 between the bottom cover 12 and the bottom plate 3. Removable connection, when the detector body components are needed, after the bottom cover 12 is removed, the detection is carried out through the measuring hole, which is convenient and quick; when the body components are tested, the bottom cover 12 is covered neatly and beautifully without affecting it. Features.

The bottom plate 3 is also provided with a secondary wiring board 13, the secondary wiring board 13 is provided with a low-voltage terminal 14, and the low-voltage terminal 14 is connected to the low-voltage coil 6.

An explosion-proof disk 15 is also installed on the top plate 2, and the explosion-proof disk 15 and the top plate 2 are connected by bolts.

The above are the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered This is the protection scope of the present invention.

Claims

A 118KV energy supply transformer, which is characterized by comprising a silicone rubber sleeve, a top plate, a bottom plate, a body and a primary lead tube, the bottom plate is arranged at the bottom of the silicone rubber sleeve, and the top plate is arranged on the silicon rubber sleeve. The top of the rubber sleeve, the body is arranged in the silicone rubber sleeve and the bottom is fixed on the bottom plate, the primary lead tube is arranged above the inner body of the silicone rubber sleeve, and the primary lead tube The top is fixed on the top plate, and the bottom is connected with the body;

The body includes a high-voltage coil, a low-voltage coil, a Japanese-shaped iron core and a circular arc low-voltage shielding cover. The Japanese-shaped iron core is horizontally arranged in the silicone rubber sleeve and fixed on the bottom plate. The low-voltage coil Is arranged on the Japanese-shaped iron core, the high-voltage coil is arranged outside the low-voltage coil, the top of the high-voltage coil is connected to the bottom of the primary lead pipe, and the arc low-voltage shield is arranged on the Japanese-shaped iron Around the inside of the core.
The 118KV energy supply transformer according to claim 1, wherein the bottom surface of the Japanese-shaped iron core is fixed on the bottom plate through a plurality of support frames, and the low voltage coil is wound around the Japanese-shaped iron core. On the middle beam.
The 118KV power supply transformer according to claim 2, wherein the number of the arc low-voltage shielding cover is four, which are respectively fixed on the inner wall around the Japanese-shaped iron core, and the arc low-voltage shielding cover It includes a circular arc section and a straight section, the circular arc section is fixed above the straight section, the circular arc section is covered on the upper surface of the outer frame of the Japanese-shaped iron core, and the straight section is connected to the Japanese-shaped iron core. The inner wall of the surroundings is close to each other.
The 118KV power supply transformer according to claim 1, wherein a primary wiring board is installed on the top plate, a high-voltage output terminal is provided on the primary wiring board, and the high-voltage output terminal is connected to the high-voltage coil. connection.
The 118KV energy supply transformer according to claim 2, wherein the bottom plate is provided with a measuring hole, the measuring hole is arranged below the Japanese-shaped iron core, and the bottom of the measuring hole is provided with The bottom cover is detachably connected between the bottom cover and the bottom plate.
The 118KV power supply transformer according to claim 5, wherein a secondary wiring board is further provided on the bottom plate, a low-voltage terminal is provided on the secondary wiring board, and the low-voltage terminal is connected to the secondary wiring board. The low-voltage coil connection.
The 118KV power transformer according to claim 4, characterized in that an explosion-proof disk is also installed on the top plate, and the explosion-proof disk and the top plate are connected by bolts.