CN215069629U

CN215069629U - Coil pouring device

Info

Publication number: CN215069629U
Application number: CN202121078640.6U
Authority: CN
Inventors: 张俊忠
Original assignee: Guangdong Zhongshun Electric Manufacturing Co ltd
Current assignee: Guangdong Zhongshun Electric Manufacturing Co ltd
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2021-12-07
Anticipated expiration: 2031-05-19

Abstract

The utility model discloses a pouring coil device, wherein, pouring coil device includes: a coil body; and the resin insulation layer is positioned on the inner side of the coil main body and is connected with the coil main body in a pouring way, and an air passage is arranged on the outer side of the resin insulation layer on the coil main body. Through the device structure, the resin insulation layer and the coil main body are fixedly connected through pouring and curing, the insulation cylinder can be replaced through the resin insulation layer, a manufacturer does not need to buy the insulation cylinder, the cost can be reduced, the insulation cylinder does not need to be specially adjusted, the assembly of the dry-type transformer can be simplified, and the assembly efficiency is improved.

Description

Coil pouring device

Technical Field

The utility model relates to a dry-type transformer technical field, in particular to pouring coil device.

Background

At present, for a dry-type transformer with voltage of more than 10kV, an insulation cylinder is generally required to be arranged between high-voltage and low-voltage coils, and the position of the insulation cylinder is required to be adjusted during assembly of the dry-type transformer so as to ensure the concentricity of the insulation cylinder and keep an electric gap uniform. The adjustment operation of insulating cylinder is comparatively loaded down with trivial details, and assembly efficiency receives the influence, and the insulating cylinder generally needs outsourcing, and purchasing cost is higher relatively.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide the pouring coil device, can reduce cost, and the assembly of the dry-type transformer of being convenient for.

To achieve the above object, there is provided a cast coil device including: a coil body; and the resin insulation layer is positioned on the inner side of the coil main body and is connected with the coil main body in a pouring way, and an air passage is arranged on the outer side of the resin insulation layer on the coil main body.

According to some embodiments, the resin insulation layer includes: the first isolation layer is connected with the coil main body in a pouring mode; the second isolating layer is cylindrical and is arranged on the inner side of the first isolating layer.

According to some embodiments, a first release layer is disposed between the first barrier layer and the second barrier layer.

According to some embodiments, the first release layer is provided as a grease layer or a plastic film layer.

According to some embodiments, the second isolation layer comprises more than two isolation plate blocks, the more than two isolation plate blocks are sequentially arranged to form a cylinder, one side of each isolation plate block is provided with a clamping groove, and the other side of each isolation plate block is provided with a clamping part matched with the clamping groove.

According to some embodiments, the spacer block is coated on both sides with a first anti-adhesive layer.

According to some embodiments, the bottom of the coil body has a first supporting edge, the first supporting edge is provided with a first limiting groove, and the bottom of the second isolation layer has a first limiting part extending into the first limiting groove; the top of coil main part has the second and holds in the palm the limit, the second holds in the palm the edge and is equipped with the second spacing groove, the top of second isolation layer has the spacing portion of second that extends to the second spacing inslot.

The beneficial effect that above-mentioned scheme has: through the device structure, the resin insulation layer and the coil main body are fixedly connected through pouring and curing, the insulation cylinder can be replaced through the resin insulation layer, a manufacturer does not need to buy the insulation cylinder, the cost can be reduced, the insulation cylinder does not need to be specially adjusted, the assembly of the dry-type transformer can be simplified, and the assembly efficiency is improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples;

FIG. 1 is a top view of a coil body and a resin insulation layer in an embodiment of a cast coil device;

FIG. 2 is an exploded view of the resin insulation layer;

fig. 3 is a sectional view of the resin insulation layer and the coil main body.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

Referring to fig. 1 to 3, the cast coil device includes a coil body 10 and a resin insulation layer 20, the resin insulation layer 20 is located inside the coil body 10 and is cast and connected with the coil body 10, and an air duct 30 is disposed on the coil body 10 outside the resin insulation layer 20. The air duct 30 may be used for ventilation for heat dissipation.

By casting the resin, the resin is cured to form the resin insulation layer 20, so that the resin insulation layer 20 is fixedly connected to the coil body 10. The resin has good insulating property and can be used as a good insulating isolation material. When the dry type transformer is assembled, the resin insulation layer 20 can replace the insulation cylinder, so that the adjustment workload can be reduced, the assembly efficiency can be improved, the special outsourcing of the insulation cylinder is not needed, and the cost can be reduced.

Specifically, the resin insulation layer 20 includes a first insulation layer 21 and a cylindrical second insulation layer 22, the first insulation layer 21 is connected to the coil body 10 by casting, and the second insulation layer 22 is disposed on the inner side of the first insulation layer 21. A first release layer is provided between the first barrier layer 21 and the second barrier layer 22. The first anti-sticking layer can be arranged as a grease layer or a plastic film layer. The first isolation layer 21 and the second isolation layer 22 are formed by casting, and can keep close fit, so that the first isolation layer and the second isolation layer are prevented from being separated during assembly of the dry-type transformer. When the resin insulation layer 20 is produced by casting, the first isolation layer 21 and the second isolation layer 22 are separately cast, if the size or the shape of the inner side of the second isolation layer 22 does not meet the quality requirement, the second isolation layer 22 can be detached by applying pressure, then the second isolation layer 22 is cast again, the whole resin insulation layer 20 does not need to be detached, and the damage and the scrapping of the coil body 10 caused by detaching the whole resin insulation layer 20 are avoided.

Further, the second isolation layer 22 includes more than two isolation plate blocks 221, the more than two isolation plate blocks 221 are sequentially arranged to form a cylinder, one side of the isolation plate block 221 is provided with a clamping groove 222, the other side of the isolation plate block is provided with a clamping portion 223 matched with the clamping groove 222, the clamping groove 222 and the clamping portion 223 are vertically arranged, adjacent isolation plate blocks 221 are clamped and connected, two sides of the isolation plate block 221 are respectively covered with a second anti-sticking layer, and the second anti-sticking layer can be set as a grease layer or a plastic film layer. The isolation plates 221 are formed by casting, and adjacent isolation plates 221 can be kept in tight fit, so that the isolation plates 221 are prevented from being separated during the assembly of the dry-type transformer. If the inside size or shape of a given insulation block 221 does not meet the quality requirements, the insulation block 221 can be removed by applying pressure and then poured again without removing the entire second insulation layer 22.

The bottom of coil main part 10 has first support limit 12, is equipped with first spacing groove on the first support limit 12, and the bottom of second isolation layer 22 has the first spacing portion 23 that extends to first spacing inslot, and the top of coil main part 10 has second support limit 13, is equipped with the second spacing groove on the second support limit 13, and the top of second isolation layer 22 has the second spacing portion 24 that extends to the second spacing inslot. Each of the spacer blocks 221 has the first position-limiting portion 23 and the second position-limiting portion 24. By this structure, the second isolation layer 22 can be positioned to prevent its detachment.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. The coil casting device is characterized by comprising

A coil body;

and the resin insulation layer is positioned on the inner side of the coil main body and is connected with the coil main body in a pouring way, and an air passage is arranged on the outer side of the resin insulation layer on the coil main body.

2. The cast coil device of claim 1, wherein the resin insulation layer comprises:

the first isolation layer is connected with the coil main body in a pouring mode;

the second isolating layer is cylindrical and is arranged on the inner side of the first isolating layer.

3. The cast coil apparatus of claim 2, wherein a first anti-sticking layer is disposed between the first and second isolation layers.

4. The cast coil device of claim 3, wherein the first anti-sticking layer is provided as a grease layer or a plastic film layer.

5. The apparatus of claim 2, 3 or 4, wherein the second insulation layer comprises two or more insulation plates, the two or more insulation plates are sequentially arranged to form a cylindrical shape, and one side of each insulation plate has a locking groove and the other side of each insulation plate has a locking portion for engaging with the locking groove.

6. The cast coil apparatus of claim 5, wherein the spacer block is coated on both sides with a first anti-sticking layer.

7. The pouring coil device according to claim 2, 3 or 4, wherein the bottom of the coil body is provided with a first supporting edge, the first supporting edge is provided with a first limiting groove, and the bottom of the second isolation layer is provided with a first limiting part extending into the first limiting groove; the top of coil main part has the second and holds in the palm the limit, the second holds in the palm the edge and is equipped with the second spacing groove, the top of second isolation layer has the spacing portion of second that extends to the second spacing inslot.