CN204270811U - A three-phase three-dimensional energy-saving transformer core - Google Patents

Abstract

It is unshakable in one's determination that the utility model provides a kind of three-phase stereo formula energy saving transformer, it is characterized in that, comprise three silicon steel sheet closed assembly bodies be made up of the silicon steel sheet of multiple closed assembly, the both sides of each silicon steel sheet closed assembly body are all spliced to form body unshakable in one's determination with two other silicon steel sheet closed assembly body, it is semicircular part that the middle part of each silicon steel sheet closed assembly body all comprises two cross sections, and each cross section of each silicon steel sheet closed assembly body is semicircular part is all the core limb that semicircular part forms that cross section is circle with one of them cross section of adjacent silicon steel sheet closed assembly body.The iron core of three-phase stereo formula energy saving transformer of the present utility model is fixed together between two by three same semicircle two post iron cores, and magnetic circuit is independent, and the length of magnetic path is identical, can reach complete equipilibrium between Three-Phase Transformer.

Description

A three-phase three-dimensional energy-saving transformer core

technical field

The utility model relates to a three-phase three-dimensional energy-saving transformer iron core, which can be used in power systems and belongs to the technical field of transformers.

Background technique

The dry-type transformer core currently used is mainly a three-phase three-column planar type, and the main components are composed of silicon steel sheets, clips, core insulation, pull plates, feet, and fasteners. As shown in Figure 1, it is a schematic diagram of the existing three-phase three-column planar core structure, which is mainly composed of silicon steel sheet 1, core insulation 2, clip 3, pull plate 4, pull screw 5, and foot 6. It has the following disadvantages: ①The silicon steel sheets have many shapes and are used in a large amount, which correspondingly increases the materials consumed for the production of transformers. ②The length of the magnetic circuit between the three phases is different, and the three phases cannot reach a complete balance. ③ There is a certain amount of waste in the silicon steel sheet during the production of the iron core, and the utilization rate cannot reach 100%. ④The volume of the transformer is relatively large, and the material consumption of the protective shell and the iron core clip also increases accordingly.

Contents of the invention

The purpose of this utility model is to provide a three-phase three-dimensional energy-saving transformer core, which not only saves the amount of raw materials, but also reduces the no-load loss of the transformer. At the same time, it improves the magnetic circuit balance between the three phases. Also reduces the size of the transformer.

In order to achieve the above purpose, the utility model provides a three-phase three-dimensional energy-saving transformer core, which is characterized in that it includes three stacked silicon steel sheets composed of a plurality of stacked silicon steel sheets, and each silicon steel sheet is stacked Both sides of the body are spliced with two other silicon steel sheet stacks to form the core body. The middle part of each silicon steel sheet stack includes two parts with semicircular cross-sections. Each silicon steel sheet stack The semicircular section and one semicircular section of the adjacent stack of silicon steel sheets form an iron core column with a circular section.

Preferably, the three stacked silicon steel sheets have the same shape.

Preferably, the upper and lower ends of the semicircular section constitute an iron yoke.

Preferably, the upper and lower ends of the iron core body are respectively clamped by two clips, each clip includes three channel steels, the three channel steels are connected end to end to form a triangle, and the ends of two adjacent channel steels It is tightened by pulling the screw rod, and the upper and lower clips are fastened by a pull plate, and the silicon steel sheet is insulated from the clip and the pull plate by an iron core.

Preferably, the core body is set on the foot, and the foot is channel steel.

Compared with the prior art, the beneficial effects of the utility model are:

1. The iron core of the three-phase three-dimensional energy-saving transformer of the present invention is fixed together by three identical semicircular two-column iron cores. The magnetic circuit is independent and the length of the magnetic circuit is the same. The three phases of the transformer can achieve complete balance.

2. The iron core of the three-phase three-dimensional energy-saving transformer of the present invention is formed by cutting and stacking silicon steel sheets. Compared with the three-phase three-dimensional wound iron core, the processing technology is simpler, the processing cost is low, and the repair is simple.

3. The cross-section of the upper and lower iron yokes between the two phases of the iron core of the three-phase three-dimensional energy-saving transformer of the utility model is semicircular, the consumption of silicon steel sheets is small, the no-load loss is small, and the noise of the transformer is small.

4. The utility model can greatly reduce the amount of materials used, greatly reduce the volume of the transformer, reduce the cost of the product, and reduce the loss of the iron core at the same time. It is an energy-saving transformer iron core.

5. The silicon steel sheet of the utility model has a simple shape, no waste material, and the material utilization rate can reach 100%.

6. The clips and feet of the utility model are made of channel steel, which is easy to process and not easily deformed after the iron core is clamped.

Description of drawings

Figure 1 is a schematic diagram of the core structure of the original three-phase three-column planar transformer;

Fig. 2 is a schematic structural diagram of a three-phase three-dimensional energy-saving transformer core;

Fig. 3 is a top view of a three-phase three-dimensional energy-saving transformer core;

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Example

As shown in Figure 2, the three-phase three-dimensional energy-saving transformer core of the present invention includes three silicon steel sheet stacks composed of a plurality of stacked silicon steel sheets 7, and each silicon steel sheet stack has two sides. The iron core body is formed by splicing with two other silicon steel sheet stacks. The upper and lower ends of the iron core body are triangular prisms. The middle part of each silicon steel sheet stack includes two semicircular sections. Each semicircular section of a silicon steel sheet stack forms a circular core column with a semicircular section of an adjacent silicon steel sheet stack. The silicon steel sheet 7 is formed by cold-rolling iron Fe, and a layer of insulating material is coated on the surface. The thickness is mainly three types: 0.23mm, 0.27mm, and 0.30mm. It is a high magnetic permeability material. The 7 pieces of silicon steel sheets are simple in shape, free of waste, and the material utilization rate can reach 100%.

As shown in FIG. 3 , the three stacked silicon steel sheets have the same shape. The upper and lower ends of the semicircular section constitute an iron yoke. The upper and lower ends of the iron core body are respectively clamped by two clips 9, each clip 9 includes three channel steels, the three channel steels are connected end to end to form a triangle, and the ends of two adjacent channel steels pass through The pull screw 11 is fastened, and the upper and lower clips 9 are fastened by a pull plate 10, and the silicon steel sheet 7 is separated from the clip 9 and the pull plate 10 by an iron core insulation 8. The iron core body is arranged on the foot 12, and the foot 12 is channel steel.

The iron core of the three-phase three-dimensional energy-saving transformer of the utility model is fixed together by three identical semicircular two-column iron cores, the magnetic circuit is independent, the magnetic circuit length is the same, and the three phases of the transformer can be completely balanced.

Claims (5)

1. a three-phase stereo formula energy saving transformer is unshakable in one's determination, it is characterized in that, comprise three silicon steel sheet closed assembly bodies be made up of the silicon steel sheet (7) of multiple closed assembly, the both sides of each silicon steel sheet closed assembly body are all spliced to form body unshakable in one's determination with two other silicon steel sheet closed assembly body, it is semicircular part that the middle part of each silicon steel sheet closed assembly body all comprises two cross sections, and each cross section of each silicon steel sheet closed assembly body is semicircular part is all the core limb that semicircular part forms that cross section is circle with one of them cross section of adjacent silicon steel sheet closed assembly body.

2. three-phase stereo formula energy saving transformer as claimed in claim 1 is unshakable in one's determination, and it is characterized in that, the shape of three described silicon steel sheet closed assembly bodies is identical.

3. three-phase stereo formula energy saving transformer as claimed in claim 1 is unshakable in one's determination, it is characterized in that, described cross section is that the two ends up and down of semicircular part form iron yoke.

4. three-phase stereo formula energy saving transformer as claimed in claim 1 is unshakable in one's determination, it is characterized in that, the two ends up and down of described body unshakable in one's determination clamp respectively by two folders (9), each folder (9) comprises three channel-section steels, three end to end formation triangles of channel-section steel, the end of adjacent two channel-section steels is by drawing screw rod (11) fastening, fastening by arm-tie (10) between upper and lower two folders (9), described silicon steel sheet (7) and separating with core inductance (8) between folder (9) and arm-tie (10).

5. three-phase stereo formula energy saving transformer as claimed in claim 1 is unshakable in one's determination, and it is characterized in that, described body unshakable in one's determination is located on footing (12), and described footing (12) is channel-section steel.