CN202150317U - Amorphous alloy iron core with circular section - Google Patents

Abstract

The utility model discloses an amorphous alloy iron core with a circular section, which belongs to the technical field of magnetic electronic parts and components and comprises a winding inner frame and an amorphous alloy iron core arranged inside the winding inner frame and further comprises interlayer partition boards. The section of the winding inner frame is circular or oval, adjacent layers in vertical direction are separated through the interlayer partition boards, a layer of epoxy coating is covered on a lamination sheet set, and the thickness of the epoxy coating is smaller than 1 mm. The amorphous alloy iron core has the advantages of being simple in structure, improving performance, improving production efficiency and reducing cost compared with the prior art by means of the structure.

Description

A circular cross-section amorphous alloy iron core

technical field

The utility model relates to the technical field of magnetic electronic components, in particular to a circular section amorphous alloy iron core.

Background technique

In recent years, amorphous alloy transformers in China have developed rapidly, and are widely used in power distribution, wind power, solar power and other fields due to their superior energy-saving effects. However, the magnetic flux density of amorphous alloy transformers is much lower than that of silicon steel sheet transformers, and the Because of the rectangular structure, its manufacturing cost has always been high, and it is at a certain disadvantage in price; because the inner frame of the winding is rectangular, the ability to resist sudden short circuit is poor; and the amorphous alloy core is generally coated with a thickness of 2mm epoxy resin, due to the thick epoxy resin coating, it is easy to generate stress when the epoxy is cured, and the amorphous iron core is very sensitive to stress, resulting in a large no-load loss and no-load current of the amorphous iron core, which affects Transformer performance; and thicker epoxy coating increases curing time, resulting in low production efficiency and long delivery cycle; 2mm thick epoxy coating increases the size of the iron core, and the cost of the corresponding transformer is also higher.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a round cross-section amorphous alloy iron core with simple structure, improved performance, improved production efficiency and reduced cost.

The utility model includes a winding inner frame skeleton and an amorphous alloy iron core inside it, and a layer spacer. The cross section of the winding inner frame skeleton is circular or elliptical, and the cross section of the amorphous alloy iron core is Both left and right and up and down are symmetrical and have a stepped shape. The amorphous alloy iron core is divided into several layers, and the adjacent upper and lower layers are separated by layer partitions. The width of each lamination group is equal, and the thickness of the lamination group increases from the middle to both sides to form a ladder shape. The vertices of each step protruding from the right angle are connected in turn to form an arc, which is connected to the inner frame of the winding. The arc segments at the relative positions of the skeleton are concentric circles, and a layer of epoxy coating is coated on the laminations, and the thickness of the epoxy coating is less than 1 mm.

The thickness of the epoxy coating is preferably 0.4-0.7 mm.

Due to the adoption of the above structure, the utility model has the advantages of simple structure, improved performance, improved production efficiency and reduced cost compared with the prior art.

Description of drawings

The accompanying drawing is a structural schematic diagram of a round cross-section amorphous alloy iron core of the utility model.

In the figure: 1. Winding inner frame skeleton, 2. Amorphous alloy iron core, 3. Layer spacer, 4. Lamination group, 5. Epoxy coating.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in detail:

As shown in the drawings, it includes a winding inner frame skeleton 1 and an amorphous alloy iron core 2 inside it, and also includes a layer spacer 3. The section of the winding inner frame skeleton 1 is elliptical, and the amorphous The cross-section of the alloy iron core 2 is symmetrical from left to right and up and down, and is stepped, and the adjacent upper and lower layers are separated by a layer partition 3, and the amorphous alloy iron core 2 of each layer is composed of laminations 4 and each The width of the laminated sheet group 4 is equal, and the thickness of the laminated sheet group 4 increases from the middle to both sides to form a ladder shape. The vertices of each step protruding from the right angle are connected in turn to form an arc, which is connected to the inner frame of the winding. The arc segments at the relative positions of 1 are concentric circles, and a layer of epoxy coating 5 is coated on the lamination group 4 . The thickness of the epoxy coating 5 is 0.4 mm.

The above-described embodiment is only one of the preferred specific implementations of the utility model, and the usual changes and replacements carried out by those skilled in the art within the scope of the technical solution of the utility model should be included in the protection scope of the utility model Inside.

Claims (2)

1. A circular cross-section amorphous alloy iron core, comprising a winding inner frame skeleton and an amorphous alloy iron core positioned therein, and also comprising a layer spacer, the section of the winding inner frame skeleton is circular or oval, The cross section of the amorphous alloy iron core is symmetrical from left to right and up and down, and is in a stepped shape. The amorphous alloy iron core is divided into several layers, and the adjacent upper and lower layers are separated by layer partitions. The amorphous alloy iron core is composed of laminations and the width of each lamination is equal. The thickness of the laminations increases from the middle to both sides to form a ladder shape. Arc, the arc section of the relative position of the arc and the winding inner frame skeleton is a concentric circle, characterized in that: the lamination group is coated with a layer of epoxy coating, and the thickness of the epoxy coating is less than 1mm . 2. The round-section amorphous alloy iron core according to claim 1, characterized in that: the thickness of the epoxy coating is 0.4-0.7 mm.