CN211125086U

CN211125086U - High breakdown voltage lapped wire

Info

Publication number: CN211125086U
Application number: CN201922031173.0U
Authority: CN
Inventors: 张祺
Original assignee: Anhui Zhongwei Copper Co ltd
Current assignee: Anhui Zhongwei Copper Co ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-07-28
Anticipated expiration: 2029-11-21

Abstract

The utility model provides a high breakdown voltage lapped wire, which comprises a wire, an insulating film layer, an anti-cracking layer, a mica tape layer, an insulating paint layer and a compact layer; the anti-cracking layer is formed by wrapping glass fibers with a wrapping angle of 45-60 degrees, the lapping rate of the mica tape layer is 55-60%, and the compact layer is formed by wrapping the glass fibers with a wrapping angle of 1-2 degrees; the insulating film layer plays an insulating role, the anti-cracking layer can play a tensile role in the radial direction of the lapped wire, so that the lapped wire cannot crack when being wound and bent, and the mica tape layer plays roles in resisting high temperature and corona and improving the breakdown voltage of the lapped wire; the insulating paint layer enhances the insulating property of the lapped wire; the compact layer is formed by wrapping glass fibers with a wrapping angle of 1-2 degrees, the conducting wires, the insulating film layer, the anti-cracking layer, the mica tape layer and the insulating paint layer can be tightly attached together, and when the wrapped wire is bent, gaps cannot occur to affect the insulativity of the wrapped wire.

Description

High breakdown voltage lapped wire

Technical Field

The utility model relates to an enameled wire technical field especially relates to high breakdown voltage around package.

Background

The winding wire used by the coil of the existing products such as low-voltage transformers, motors, transformers for electric welding machines and the like mostly uses glass fiber wrapped wires, the breakdown voltage resistance and corona resistance of the glass fiber wrapped wires are poor, and the glass fiber wrapped wires can be broken down generally when the voltage is about 500-600 v.

The winding angle of the common glass fiber is 1-2 degrees, when a coil is wound, the bending and adhesion performance of a winding wire can not meet the requirements, and an insulating layer is easy to crack on the bending surface of the winding coil in the use process, so that the coil is damaged and the service life is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art not enough, provide high breakdown voltage around the covering.

The utility model discloses a following technical means realizes solving above-mentioned technical problem:

high breakdown voltage lapped wire; the anti-cracking coating comprises a wire, an insulating film layer, an anti-cracking layer, a mica tape layer, an insulating paint layer and a compact layer; the anti-cracking layer is formed by wrapping glass fibers with a wrapping angle of 45-60 degrees, the overlapping rate of the mica tape layer is 55-60%, and the compact layer is formed by wrapping the glass fibers with a wrapping angle of 1-2 degrees.

As an improvement of the above technical solution, the insulating thin film layer is a polyimide thin film layer.

As an improvement of the technical scheme, the overlapping rate of the insulating film layer is 50-55%.

As an improvement of the technical scheme, the anti-cracking layer is formed by wrapping double glass fibers, and the wrapping directions of the two glass fibers are opposite; the compact layer is formed by wrapping double glass fibers, and the wrapping directions of the two glass fibers are opposite.

The utility model has the advantages that:

the anti-cracking layer is formed by wrapping glass filaments with a wrapping angle of 45-60 degrees, and can play a role in tensile strength in the radial direction of the wrapping wire, so that the wrapping wire cannot crack when being wound and bent, the phenomenon that the service life of the wrapping wire is reduced due to cracking of the wrapping layer of the insulating film of the wrapping wire is prevented, the bending degree of the wrapping wire under the same condition is increased, the adaptability is wider, and the mica tape layer plays a role in resisting high temperature and corona and improving the breakdown voltage of the wrapping wire; the insulating paint layer enhances the insulating property of the lapped wire; the compact layer is formed by winding glass fibers with a winding angle of 1-2 degrees, can tightly attach the wires, the insulating film layer, the anti-cracking layer, the mica tape layer and the insulating paint layer together, and cannot generate gaps to influence the insulativity of the winding wire when the winding wire is bent.

Drawings

Fig. 1 is a schematic structural view of a high breakdown voltage lapped wire according to an embodiment of the present invention;

the anti-cracking coating comprises a wire 1, an insulating film layer 2, an anti-cracking layer 3, a mica tape layer 4, an insulating paint layer 5 and a compact layer 6.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Examples

As shown in fig. 1, the high breakdown voltage lapped wire according to this embodiment includes a wire 1, an insulating film layer 2, an anti-cracking layer 3, a mica tape layer 4, an insulating paint layer 5, and a dense layer 6; the anti-cracking layer 3 is formed by wrapping glass fibers with a wrapping angle of 45-60 degrees, the overlapping rate of the mica tape layer 4 is 55-60%, and the compact layer 6 is formed by wrapping glass fibers with a wrapping angle of 1-2 degrees.

The insulating film layer 2 plays an insulating role, the anti-cracking layer 3 is formed by winding glass fibers with a winding angle of 45-60 degrees, and can play a tensile role in the radial direction of the winding wire, so that the winding wire cannot crack when being wound and bent, the situation that the service life of the winding wire is reduced due to the fact that the winding layer of the insulating film of the winding wire cracks is prevented, the bending degree of the winding wire under the same condition is increased, the adaptability is wider, and the mica tape layer 4 plays a role in resisting high temperature and corona and improving the breakdown voltage of the winding wire; the insulating paint layer 5 enhances the insulating property of the lapped wire; the compact layer 6 is formed by winding glass fibers with a winding angle of 1-2 degrees, can tightly attach the wire 1, the insulating film layer 2, the anti-cracking layer 3, the mica tape layer 4 and the insulating paint layer 5 together, and cannot generate a gap to influence the insulativity of the winding wire when the winding wire is bent.

The insulating film layer 2 is a polyimide film layer.

The overlapping rate of the insulating film layer 2 is 50-55%; conventionally, the pack rate is 45-50%, gaps are easy to appear between adjacent insulating films when the wrapped wire is bent, and once the gaps appear, the insulating property and the voltage breakdown resistance of the wrapped wire are affected at the positions; the 50-55% overlapping rate can enable the insulating films to be overlapped at the joint, and gaps are prevented from appearing at the joint when the wrapping wire is bent at the later stage.

The anti-cracking layer 3 is formed by wrapping double glass fibers, and the wrapping directions of the two glass fibers are opposite; the compact layer 6 is formed by wrapping double glass fibers, and the wrapping directions of the two glass fibers are opposite; the double glass fibers are wound in opposite winding directions in a crossed manner, so that the mechanical strength of the anti-cracking layer 3 and the compact layer 6 can be enhanced, the mechanical performance of the winding wire is improved, the bending angle is improved, and the double glass fibers are suitable for more severe environments.

It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. High breakdown voltage is around package, its characterized in that: the anti-cracking coating comprises a wire, an insulating film layer, an anti-cracking layer, a mica tape layer, an insulating paint layer and a compact layer; the anti-cracking layer is formed by wrapping glass fibers with a wrapping angle of 45-60 degrees, the overlapping rate of the mica tape layer is 55-60%, and the compact layer is formed by wrapping the glass fibers with a wrapping angle of 1-2 degrees.

2. The high breakdown voltage lapped wire of claim 1, wherein: the insulating film layer is a polyimide film layer.

3. The high breakdown voltage lapped wire of claim 1, wherein: the overlapping rate of the insulating film layer is 50-55%.

4. The high breakdown voltage lapped wire of claim 1, wherein: the anti-cracking layer is formed by wrapping double glass fibers, and the wrapping directions of the two glass fibers are opposite; the compact layer is formed by wrapping double glass fibers, and the wrapping directions of the two glass fibers are opposite.