CN213242211U

CN213242211U - High-voltage winding interlayer insulation paper AFA insulation structure

Info

Publication number: CN213242211U
Application number: CN202022339754.3U
Authority: CN
Inventors: 曹玲燕; 吕晨凌; 曹玲娜; 任富强; 周灵道
Original assignee: Hangzhou Qiantang River Electric Group Co Ltd
Current assignee: Hangzhou Qiantang River Electric Group Co Ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-05-18
Anticipated expiration: 2030-10-20

Abstract

The utility model relates to a high voltage winding interlaminar insulation paper AFA insulation system, the insulating technical field of affiliated transformer winding, including the iron core, the iron core on be equipped with the coil that cup joints with iron core looks wound form, the coil lower extreme be equipped with cup joint the fixed position end ring that ends with iron core looks inlay type, coil upper end be equipped with cup joint the fixed C type with iron core looks inlay type and end the position ring, coil and C type end ring, coil and end and all be equipped with insulating assembly between position end ring, coil and iron core. The cable has the characteristics of simple structure, good tensile strength, high short-circuit resistance and long service life. The problem of transformer long-term operation poor stability is solved. Meanwhile, the electric loss is reduced, the standby capacity is improved, the safety and the reliability are improved, and the steel amount of the conductor and the iron core is reduced, so that the size is reduced, and the cost is reduced.

Description

High-voltage winding interlayer insulation paper AFA insulation structure

Technical Field

The utility model relates to a transformer winding insulation technical field, concretely relates to insulating paper AFA insulation system between high-voltage winding layer.

Background

The insulating paper is a generic name of paper for electrical insulation. The insulating material is used as the insulating material of various electric appliances such as cables, coils and the like. Besides good insulating properties and mechanical strength, the insulating material also has thermal stability, chemical compatibility, insensitivity to moisture and radiation resistance. But better insulation and stability are required for the transformers of the state, south and short circuit tests. Because the voltage surge generated by the short circuit is very large in the short circuit test. The high voltage winding can generate axial force, so that the winding is deformed and insulation is damaged.

Disclosure of Invention

The utility model discloses mainly solve and have tensile strength difference, anti short circuit ability low and life weak point among the prior art, provide a high-voltage winding interlaminar insulation paper AFA insulation system, it has simple structure, tensile strength is good, anti short circuit ability is high and long service life's characteristics. The problem of transformer long-term operation poor stability is solved. Meanwhile, the electric loss is reduced, the standby capacity is improved, the safety and the reliability are improved, and the steel amount of the conductor and the iron core is reduced, so that the size is reduced, and the cost is reduced.

The above technical problem of the present invention can be solved by the following technical solutions:

the utility model provides an insulating paper AFA insulation system between high voltage winding layer, includes the iron core, the iron core on be equipped with the coil that cup joints with iron core looks wound form, the coil lower extreme be equipped with cup joint the fixed position end ring that ends with iron core looks inlay, coil upper end be equipped with cup joint the fixed C type with iron core looks inlay and end the position ring, coil and C type end position ring, coil and end all be equipped with insulating assemblies between position end ring, coil and iron core.

Preferably, the insulation assembly comprises winding insulation paper, and AFA insulation paper integrally attached to the winding insulation paper is arranged between the winding insulation paper and the coil.

Preferably, the AFA insulating paper comprises full-size adhesive paper, and a polyester film is arranged at the upper end of the full-size adhesive paper.

Preferably, the thickness of the all-purpose adhesive paper is 0.1 mm.

Preferably, the thickness of the polyester film is 0.05 mm.

The utility model discloses can reach following effect:

the utility model provides a high-voltage winding interlaminar insulation paper AFA insulation system compares with prior art, has simple structure, tensile strength is good, anti short circuit ability high and long service life's characteristics. The problem of transformer long-term operation poor stability is solved. Meanwhile, the electric loss is reduced, the standby capacity is improved, the safety and the reliability are improved, and the steel amount of the conductor and the iron core is reduced, so that the size is reduced, and the cost is reduced.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a structural sectional view of the insulating assembly of the present invention.

Fig. 3 is a structural sectional view of the AFA insulating paper of the present invention.

In the figure: the coil comprises an iron core 1, a C-shaped stop ring 2, an insulation assembly 3, a coil 4, a stop bottom ring 5, AFA insulation paper 6, winding insulation paper 7, a polyester film 8 and full-adhesive paper 9.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example (b): as shown in fig. 1, 2 and 3, an AFA insulation structure of high-voltage winding interlayer insulation paper comprises an iron core 1, wherein a coil 4 in wound form and sleeved with the iron core 1 is arranged on the iron core 1, a stop bottom ring 5 in clamped and embedded form and sleeved with the iron core 1 is arranged at the lower end of the coil 4, a C-shaped stop ring 2 in clamped and embedded form and sleeved with the iron core 1 is arranged at the upper end of the coil 4, and insulation components 3 are arranged between the coil 4 and the C-shaped stop ring 2, between the coil 4 and the stop bottom ring 5, and between the coil 4 and the iron core 1. The insulation component 3 comprises winding insulation paper 7, and AFA insulation paper 6 which is integrally attached to the winding insulation paper 7 is arranged between the winding insulation paper 7 and the coil 4. The AFA insulating paper 6 comprises full-size adhesive paper 9, and the thickness of the full-size adhesive paper 9 is 0.1 mm. The upper end of the full-adhesive paper 9 is provided with a polyester film 8, and the thickness of the polyester film 8 is 0.05 mm.

In conclusion, the AFA insulation structure of the high-voltage winding interlayer insulation paper has the characteristics of simple structure, good tensile strength, high short-circuit resistance and long service life. The problem of transformer long-term operation poor stability is solved. Meanwhile, the electric loss is reduced, the standby capacity is improved, the safety and the reliability are improved, and the steel amount of the conductor and the iron core is reduced, so that the size is reduced, and the cost is reduced.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without deviating from the basic characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

In conclusion, the above description is only the specific embodiment of the present invention, but the structural features of the present invention are not limited thereto, and any person skilled in the art can make changes or modifications within the scope of the present invention.

Claims

1. The utility model provides a high voltage winding interlaminar insulation paper AFA insulation system which characterized in that: including iron core (1), iron core (1) on be equipped with coil (4) that cup joint with iron core (1) looks wound form, coil (4) lower extreme be equipped with cup joint fixed end position end ring (5) with iron core (1) looks inlay form, coil (4) upper end be equipped with cup joint fixed C type with iron core (1) looks inlay form and end position ring (2), coil (4) and end position end ring (5), coil (4) and iron core (1) and all be equipped with insulating part (3) within a definite time.

2. The AFA insulation structure of high-voltage winding interlayer insulation paper as claimed in claim 1, wherein: insulating module (3) include winding insulating paper (7), winding insulating paper (7) and coil (4) between be equipped with AFA insulating paper (6) that are the integration laminating with winding insulating paper (7).

3. The AFA insulation structure of high-voltage winding interlayer insulation paper as claimed in claim 2, wherein: AFA insulated paper (6) include full adhesive tape (9), full adhesive tape (9) upper end be equipped with polyester film (8).

4. The AFA insulation structure of high-voltage winding interlayer insulation paper as claimed in claim 3, wherein: the thickness of the full-adhesive paper (9) is 0.1 mm.

5. The AFA insulation structure of high-voltage winding interlayer insulation paper as claimed in claim 3, wherein: the thickness of the polyester film (8) is 0.05 mm.