Transformer magnetic core segmented air gap skeleton structure and transformer

Abstract

The utility model discloses a transformer magnetic core segmentation air gap skeleton structure, which comprises a skeleton, the skeleton comprises a top plate, a bottom plate, a vertical plate and a plurality of mounting plates, the top plate and the bottom plate are connected through the vertical plate, the vertical plate is connected with the plurality of longitudinally arranged mounting plates, and the mounting plates can be provided with magnetic columns. According to the structure, the production process can be simplified, the production cost is reduced, the production efficiency is improved, and meanwhile the problem of magnetic core cracking can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to transformer technical field, concretely relates to a transformer magnetic core sectional air gap framework structure and transformer. BACKGROUND

[0002] At present, in the field of transformer industry, in order to prevent the saturation of the magnetic core, reduce the temperature rise and reduce the energy consumption, the structure of multiple sectional air gaps in the magnetic core column (i.e. multiple magnetic columns are arranged longitudinally in the magnetic core, and epoxy plate spacers are arranged between the adjacent two magnetic columns, and the epoxy plate spacers are connected with the magnetic columns by glue) is designed. This way of processing has the following disadvantages:

[0003] 1. Since each magnetic column and the epoxy plate spacer need to be connected by glue, and both need to be glued and baked, the processing is complicated, and the material and labor costs are high.

[0004] 2. There are no ventilation holes in the magnetic core and the magnetic column, resulting in low heat dissipation efficiency.

[0005] 3. The magnetic column and the magnetic core are connected by glue, and the thermal expansion will generate stress when used in the client oven, which will cause the magnetic core to crack easily. INVENTION CONTENTS

[0006] In view of the defects in the prior art, the utility model provides a transformer magnetic core sectional air gap framework structure and a transformer. The structure can simplify the production process, reduce the production cost, improve the production efficiency, and solve the problem of magnetic core cracking.

[0007] A transformer magnetic core sectional air gap framework structure includes a framework, the framework includes a top plate, a bottom plate, a vertical plate and multiple mounting plates, the top plate and the bottom plate are connected by the vertical plate, multiple mounting plates are longitudinally arranged on the vertical plate, and the mounting plates can mount the magnetic columns.

[0008] Preferably, the top plate, the bottom plate and the mounting plate are provided with first air holes, the magnetic column is provided with second air holes, and the second air holes correspond to the first air holes.

[0009] Preferably, the mounting plate is provided with a glue dispensing groove, and the glue can be poured on the glue dispensing groove and the magnetic column to fix the magnetic column on the mounting plate.

[0010] Preferably, the vertical plate is an arc plate.

[0011] Preferably, the vertical plate is divided into an upper segment and a lower segment, and the upper segment and the lower segment are detachably connected.

[0012] A transformer includes a transformer magnetic core sectional air gap framework structure and a magnetic core, and the framework is installed in the magnetic core.

[0013] Preferably, the magnetic core has a third vent hole on the magnetic core, and the third vent hole corresponds to the first vent hole.

[0014] Preferably, the top wall and the bottom wall of the magnetic core are provided with the third vent hole.

[0015] The beneficial effects of the utility model are embodied in:

[0016] In the technical scheme, the skeleton is used to mount the magnetic column, the skeleton is made of plastic, the unit price is cheap, the cost is lower than that of the traditional epoxy plate gasket, and the structure can save about 80% of the cost.

[0017] In the embodiment, the magnetic column is mounted on the skeleton, can be uniformly grabbed by a corresponding jig with a mechanical arm, is assembled in the skeleton at one time, and all stacking can be realized by one action, and the working hour cost is reduced by more than 90%.

[0018] In the technical scheme, after the magnetic column is placed on the skeleton, the jig can align the skeleton and the magnetic column coaxially, production is fast and convenient, compared with the traditional structure which needs to be aligned manually piece by piece, operation is more convenient, and working hours are saved.

[0019] In the technical scheme, the magnetic column is placed on the skeleton, only the skeleton is connected with the magnetic core, the magnetic column does not contact and glue (air gap is left, space for releasing glue stress is reserved), and no matter how the client bakes and uses, the problem of magnetic core cracking can not be caused.

[0020] In the technical scheme, the magnetic column is placed on the mounting plate, the design and sample making of the early-stage researchers are facilitated, and several air gaps can be realized by adjusting the number and position of the magnetic columns, and the traditional method needs to be ground repeatedly for many times, and the development difficulty is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the drawings needed in the specific embodiment or the prior art description will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual proportion.

[0022] Figure 1 It is a whole structure schematic view of the skeleton in the utility model;

[0023] Figure 2 It is a whole structure schematic view of the skeleton in the utility model;

[0024] Figure 3 It is a whole structure schematic view of the transformer in the utility model.

[0025] In the attached diagram, 1-top plate, 2-bottom plate, 3-vertical plate, 4-mounting plate, 5-magnetic column, 6-first vent hole, 7-adhesive groove, 8-magnetic core, 9-third ventilation hole, 10-adhesive. Detailed Implementation

[0026] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0027] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0028] Example 1

[0029] like Figures 1-2 As shown, this embodiment provides a segmented air gap frame structure for a transformer core, including a frame. The frame includes a top plate 1, a bottom plate 2, a vertical plate 3, and multiple mounting plates 4. The top plate 1 and the bottom plate 2 are connected by the vertical plate 3. Multiple longitudinally arranged mounting plates 4 are connected to the vertical plate 3, and magnetic columns 5 can be installed on the mounting plates 4.

[0030] In this embodiment, a frame is set up to install the magnetic column 5. The frame is made of plastic, which is inexpensive and has a lower cost compared to traditional epoxy board gaskets. This structure can save about 80% of the cost.

[0031] In this embodiment, multiple magnetic pillars 5 are installed on the frame. They can be uniformly grasped by a robotic arm using corresponding fixtures and assembled into the frame at one time. All of them can be stacked in one action, reducing labor costs by more than 90%.

[0032] In this embodiment, after the magnetic column 5 is placed on the skeleton, the skeleton and the magnetic column 5 can be aligned coaxially by the fixture, which makes production quick and convenient. Compared with the traditional structure that requires manual alignment piece by piece, the operation is more convenient and saves time.

[0033] Traditionally, the magnetic core 5 and epoxy board gaskets are stacked one by one. Each epoxy board gasket is fixed to the magnetic core 5 by applying glue and baking. When used in the furnace at the customer's site, the thermal expansion will generate stress, which will cause the magnetic core 8 to crack easily and result in defects.

[0034] In this embodiment, the magnetic column 5 is placed on the skeleton. Only the skeleton and the magnetic core 8 need to be connected. The magnetic column 5 and the magnetic core 8 do not contact each other and no glue is applied (leaving an air gap to allow space for glue stress release). Therefore, no matter how the client bakes and uses it, the magnetic core will not crack.

[0035] In this embodiment, the magnetic column 5 is placed on the mounting plate 4, which facilitates the design and prototyping of early R&D personnel. The number of air gaps can be adjusted by changing the number and position of the magnetic column 5, whereas the traditional method requires repeated grinding, thus reducing the development difficulty.

[0036] In this embodiment, the insulation between the secondary and the magnetic core 8 can be achieved by wrapping a layer of tape on the skeleton. In contrast, the traditional design requires the processing of a sleeve. The new design greatly reduces the material and processing costs and has better performance.

[0037] In this embodiment, the top plate 1, the bottom plate 2, and the mounting plate 4 are all provided with a first vent hole 6, and the magnetic column 5 is provided with a second vent hole, which corresponds to the first vent hole 6.

[0038] In this embodiment, a first vent hole 6 and a second vent hole are respectively opened on the frame and the magnetic column 5, and together with the third vent hole 9 on the magnetic core 8, when the customer power supply is put into use, the heat conduction surface area is greatly increased and it is in direct contact with the air. Through air cooling and other methods, the heat conduction efficiency is greatly improved. Compared with the traditional structure, the temperature of the coil and the magnetic core 8 is reduced, the energy consumption is reduced, and the service life is extended.

[0039] In this embodiment, the mounting plate 4 has a dispensing groove 7, and glue 10 can be poured into the dispensing groove 7 and onto the magnetic pillars 5 to fix the magnetic pillars 5 onto the mounting plate 4. In this embodiment, the dispensing groove 7 is reserved on the mounting plate 4. After the position of the magnetic pillars 5 is adjusted, a dispensing machine can be used to automatically dispense glue and fix them. All magnetic pillars 5 can be dispensed in one step, which greatly simplifies the operation process and reduces labor costs compared to the traditional one-by-one alignment and dispensing.

[0040] In this embodiment, the vertical plate 3 is an arc-shaped plate. In this embodiment, the arc-shaped plate is set as a semi-circular arc-shaped plate.

[0041] In this embodiment, the vertical plate 3 is divided into an upper section and a lower section, which are detachably connected. This division of the vertical plate 3 into upper and lower sections further divides the frame into two parts. Depending on the product height requirements, the two frame parts can be used together or separately, allowing for flexible selection by early-stage R&D personnel. This also allows for the use of multiple machine types, reducing costs. Specific detachable connections can be achieved through snap-fit ​​connections, bolt connections, etc., utilizing existing technology, and will not be elaborated upon further here.

[0042] Example 2

[0043] like Figure 3 As shown, this embodiment is a further description based on embodiment 1. This embodiment provides a transformer, including a transformer core segmented air gap skeleton structure and a magnetic core 8, wherein the skeleton is installed inside the magnetic core 8.

[0044] The third vent hole 9 is arranged on the top wall and the bottom wall of the magnetic core 8 in the embodiment, so that the heat dissipation effect is further improved.

[0045] The third vent hole 9 is arranged on the top wall and the bottom wall of the magnetic core 8 in the embodiment, so that the heat dissipation effect is further improved.

[0046] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not limited to them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application.

Claims

1. A segmented air gap frame structure for a transformer core, characterized in that, The system includes a frame, which includes a top plate (1), a bottom plate (2), a vertical plate (3) and multiple mounting plates (4). The top plate (1) and the bottom plate (2) are connected by the vertical plate (3). Multiple vertically arranged mounting plates (4) are connected to the vertical plate (3). Magnetic columns (5) can be installed on the mounting plates (4).

2. The segmented air gap frame structure for a transformer core according to claim 1, characterized in that, The top plate (1), bottom plate (2) and mounting plate (4) are each provided with a first vent hole (6), and the magnetic column (5) is provided with a second vent hole, which corresponds to the first vent hole (6).

3. The segmented air gap frame structure for a transformer core according to claim 1, characterized in that, The mounting plate (4) has a dotting groove (7) on it, and glue (10) can be poured into the dotting groove (7) and the magnetic column (5) to fix the magnetic column (5) on the mounting plate (4).

4. The segmented air gap frame structure for a transformer core according to claim 1, characterized in that, The vertical plate (3) is an arc-shaped plate.

5. The segmented air gap frame structure for a transformer core according to claim 1, characterized in that, The vertical plate (3) is divided into an upper section and a lower section, which are detachably connected.

6. A transformer, characterized in that, The transformer core segmented air gap skeleton structure and core (8) as described in any one of claims 1-5 are included, wherein the skeleton is installed inside the core (8).

7. A transformer according to claim 6, characterized in that, The magnetic core (8) has a third ventilation hole (9), which corresponds to the first ventilation hole (6).

8. A transformer according to claim 7, characterized in that, The magnetic core (8) has a third ventilation hole (9) on both the top and bottom walls.

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