CN210110490U

CN210110490U - Transformer foil coil end insulator capable of increasing winding speed

Info

Publication number: CN210110490U
Application number: CN201921549457.2U
Authority: CN
Inventors: 穆淑萍; 金德胜; 范克科
Original assignee: Ji'nan Qinghe Electric Co Ltd
Current assignee: Ji'nan Qinghe Electric Co Ltd
Priority date: 2019-09-18
Filing date: 2019-09-18
Publication date: 2020-02-21
Anticipated expiration: 2029-09-18

Abstract

The utility model discloses an improve winding speed's transformer foil is insulating with end around coil relates to transformer technical field, specifically is an improve winding speed's transformer foil is insulating with end around coil, including the transformer box, the top fixed mounting of transformer box has high-tension bushing and low-voltage bushing, the inside of transformer box is provided with transformer vacuum apparatus, permanent-magnet machine and independent grease chamber, the inside fixed mounting of independent grease chamber has the coil. This improve winding speed's transformer foil is end insulation for coil, use hem equipment through the both sides with the interlayer insulation to roll over the end insulation, thereby make interlayer insulation and end insulation as an organic whole, make interlayer insulation and end insulation all can be along with the copper foil twine together, avoided traditional coiling in-process need place alone and the insulating condition of stiff end, shortened the coiling time of coil, improved the coiling speed and the efficiency of coil.

Description

Transformer foil coil end insulator capable of increasing winding speed

Technical Field

The utility model relates to a transformer technical field specifically is an improve winding speed's transformer foil coil is with end insulation.

Background

The foil coil is formed by winding one or more wires in parallel, and is one of layer coils. Unlike a cylindrical coil: the lead of the foil coil is a thin and wide copper foil or aluminum foil, the axial direction is only 1 turn, the radial direction is provided with a plurality of turns, an axial oil gap is formed after the foil coil is wound for a plurality of turns, and the foil coil has good mechanical strength, is not easy to deform and can bear short circuit force; the electric strength is good, and the impact gradient voltage is uniformly distributed; the winding is convenient. Traditional foil is cut out into the note that accords with the coil size by 0.5mm or 1mm cardboard with end insulation, when the coil is wound, along with the coil is wound together, and, end insulation need manual placing, and need fix with the note at any time, lead to reducing the winding speed of foil around the coil, in addition, when end insulation is cut out for too long time, the coil has been wound the round, still need to subtract unnecessary note, the time of coiling has been increased, after the coiling, because cardboard section leads to the terminal surface untidy with coil end length is different, in end insulation winding process, because the cardboard only presss from both sides between copper foil or aluminium foil, shift easily, it is fixed not good, cause the coil shaping back end insulation loose easily.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides an improve winding speed's transformer foil coil is with end insulation has solved the problem of proposing among the above-mentioned background art.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides an improve winding speed's transformer foil is end insulation for coil, includes the transformer box, the top fixed mounting of transformer box has high-voltage bushing and low-voltage bushing, the inside of transformer box is provided with transformer vacuum device, permanent-magnet machine and independent grease chamber, the inside fixed mounting of independent grease chamber has the coil, the side fixed mounting of transformer box has external control ware, the bottom of transformer box is provided with ground terminal, the surface of transformer box is equipped with, the coil is by copper foil spiral coiling, the side of coil is provided with the end insulation, the upper and lower bottom surface of copper foil all is provided with the interlaminar insulation.

Optionally, the interlayer insulation and the end insulation are integrated, and the two ends of the end insulation are folded to form the interlayer insulation.

Optionally, the interlayer insulation and the end insulation are made of diamond lattice point adhesive paper, and the thickness of the diamond lattice point adhesive paper is 0.17 cm.

Optionally, the interlayer insulation and the terminal insulation are spirally wound together with the copper foil.

The utility model provides an improve winding speed's transformer foil coil end is insulating possesses following beneficial effect:

1. this improve winding speed's transformer foil is end insulation for coil, use hem equipment through the both sides with the interlayer insulation to roll over the end insulation, thereby make interlayer insulation and end insulation as an organic whole, make interlayer insulation and end insulation all can be along with the copper foil twine together, avoided traditional coiling in-process need place alone and the insulating condition of stiff end, shortened the coiling time of coil, improved the coiling speed and the efficiency of coil.

2. This improve winding speed's transformer foil is end insulation for coil, through setting layer insulation and end insulation into an organic whole structure, make the copper foil can wind layer insulation and end insulation simultaneously when coiling into the coil, and the coiling rear end face levels, there is not unevenness phenomenon, and because integrative structural design, make the end insulation can not loose, layer insulation and end insulation utilize diamond lattice point to glue the paper and roll over and form, end insulation becomes a whole with the coil when the coil solidification, the anti short circuit ability of coil has been increased.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is the installation schematic diagram of the transformer box of the utility model.

In the figure: 1. a coil; 2. copper foil; 3. interlayer insulation; 4. end insulation; 5. a transformer tank body; 6. a transformer vacuum device; 7. a permanent magnet machine; 8. an independent oil chamber; 9. a high voltage bushing; 10. a low-pressure bushing; 11. an external controller; 12. and a ground terminal.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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.

Referring to fig. 1 to 2, the present invention provides a technical solution: a transformer foil coil end insulation for improving winding speed comprises a transformer box body 5, wherein a high-voltage sleeve 9 and a low-voltage sleeve 10 are fixedly installed at the top of the transformer box body 5, a transformer vacuum device 6, a permanent magnet machine 7 and an independent oil chamber 8 are arranged in the transformer box body 5, a coil 1 is fixedly installed in the independent oil chamber 8, an external controller 11 is fixedly installed on the side face of the transformer box body 5, a grounding terminal 12 is arranged at the bottom of the transformer box body 5, a surface 13 of the transformer box body 5 is provided, the coil 1 is spirally wound by a copper foil 2, end insulations 4 are arranged on the side face of the coil 1, interlayer insulations 3 are arranged on the upper bottom face and the lower bottom face of the copper foil 2, the end insulations 4 are formed by folding the interlayer insulations 3, the end insulations 4 are positioned on two sides of the copper foil 2 along with the arrangement of the end insulations 4 when in use, the end, thereby increasing the speed of winding.

Secondly, the interlayer insulation 3 and the end insulation 4 are arranged into an integral structure, the two ends of the end insulation 4 are folded to form the interlayer insulation 3, the interlayer insulation 3 and the end insulation 4 are arranged into an integral body, the end insulation 4 is formed by folding the interlayer insulation 3 by using a special folding device, a traditional insulation paper board does not need to be placed in the copper foil 2 winding process, the winding time is shortened, and the winding efficiency is improved.

Secondly, the materials of the interlayer insulation 3 and the end insulation 4 are diamond lattice point gummed paper, the thickness of the diamond lattice point gummed paper is 0.17 cm, the diamond lattice point gummed paper is an insulation material which coats special modified epoxy resin on the electrical insulation paper in a diamond lattice shape, the diamond lattice point gummed paper is widely applied to the interlayer insulation and the turn insulation of the oil-immersed power transformer, when the diamond lattice point gummed paper is used, a coating layer begins to melt at a certain temperature in the coil drying process to generate an adhesion effect, the coating layer begins to solidify along with the rise of the temperature, so that the adjacent layers of the diamond lattice point gummed paper winding are reliably adhered into a fixed unit, the adhesion strength of the diamond lattice point gummed paper epoxy resin is enough to prevent the displacement of the layers of the winding during short circuit, thereby ensuring the long-term mechanical and electrical properties of the insulation structure, and because the resin coating of the diamond lattice point gummed paper is in a point shape, the immersion of, effectively avoids corona and partial discharge, thereby ensuring the safety and reliability of the insulating structure.

And secondly, the interlayer insulation 3 and the end insulation 4 are spirally wound together with the copper foil 2, and the end insulation 4 does not need to be arranged independently in the winding process, so that the winding time is saved.

To sum up, when the transformer foil coil with the improved winding speed is used for end insulation, firstly, a specially-made edge folding device is used for folding out the width and the thickness of the interlayer insulation 3 on two sides of the interlayer insulation 3, the end insulation 4 is placed between the copper foils 2 and is fixed with the copper foils 2 by using the glue surfaces of the diamond point adhesive paper, secondly, the interlayer insulation 3 and the end insulation 4 are wound along with the winding of the copper foils 2, and finally, the wound coil 1 is installed inside the independent oil chamber 8.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an improve winding speed's transformer foil is end insulation for coil, includes transformer box (5), its characterized in that: the utility model discloses a transformer box, including transformer box (5), inside fixed mounting of transformer box (5) has high-voltage bushing (9) and low-voltage bushing (10), the inside of transformer box (5) is provided with transformer vacuum apparatus (6), permanent magnet machine (7) and independent grease chamber (8), the inside fixed mounting of independent grease chamber (8) has coil (1), the side fixed mounting of transformer box (5) has external control ware (11), the bottom of transformer box (5) is provided with ground terminal (12), the surface of transformer box (5) is equipped with (13), coil (1) is by copper foil (2) spiral winding, the side of coil (1) is provided with end insulation (4), the upper and lower bottom surface of copper foil (2) all is provided with interlayer insulation (3).

2. The end insulation for a transformer foil coil for increasing winding speed of claim 1, wherein: the interlayer insulation (3) and the end insulation (4) are arranged into an integral structure, and the two ends of the end insulation (4) are folded to form the interlayer insulation (3).

3. The end insulation for a transformer foil coil for increasing winding speed of claim 1, wherein: the interlayer insulation (3) and the end insulation (4) are both made of diamond point adhesive paper, and the thickness of the diamond point adhesive paper is 0.17 cm.

4. The end insulation for a transformer foil coil for increasing winding speed of claim 1, wherein: the interlayer insulation (3) and the end insulation (4) are spirally wound together with the copper foil (2).