Insulating sheet of transformer
By designing guiding components, such as guide rods or limiting chamfers, on the insulating sheet body, the problem of low accuracy in manual alignment in the prior art is solved, realizing automatic alignment of the insulating sheet and reducing costs, which facilitates coil installation.
Patent Information
- Application Number
- CN202423087802.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-14
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2034-12-14
AI Technical Summary
The existing insulating sheets require manual alignment during installation, which is not very accurate and the specialized alignment device is expensive.
An insulating sheet body with guiding components, such as guide rods, limiting chamfers, positioning holes, or guide grooves, is designed to achieve automatic alignment of the insulating sheet, improving accuracy and reducing costs.
It enables automatic alignment of the insulating sheets, improves installation accuracy, reduces costs, and facilitates subsequent coil winding.
Smart Images
Figure CN223941634U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of insulating sheet technology, and in particular to an insulating sheet for a transformer. Background Technology
[0002] A transformer consists of two main parts: insulating sheets (iron core) and windings (coils).
[0003] Existing insulating sheets require alignment during installation, but manual alignment is not accurate enough, and using specialized alignment devices increases costs considerably. Therefore, we propose a new type of transformer insulating sheet. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides an insulating sheet for a transformer, which solves the technical problem that "existing insulating sheets require alignment during installation, but manual alignment is not very accurate, and the cost of using a special alignment device is also significantly increased."
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] An insulating sheet for a transformer includes an insulating sheet body, on which two winding slots and two heat dissipation slots are formed. The insulating sheet body is in the shape of a sun. The two heat dissipation slots are respectively arranged on the same side of the two winding slots. A guide assembly is provided on the insulating sheet body.
[0007] As a preferred embodiment of this utility model, the guide assembly includes a guide rod and gaskets and bolts disposed at both ends of the guide rod. The insulating sheet body has positioning holes at opposite corners that match the guide rod. Both ends of the guide rod are threaded. The two bolts are threadedly connected to both ends of the guide rod. The gasket is slidably sleeved on the guide rod, with one side abutting against the insulating sheet body and the other side abutting against the bolt.
[0008] As a preferred embodiment of this utility model, the guide component consists of two limiting chamfers, which are symmetrically fixedly installed on opposite corners of the insulating sheet body. The height of the limiting chamfers protruding from the insulating sheet body is the same as the thickness of the insulating sheet body.
[0009] As a preferred embodiment of this utility model, the guiding component consists of a positioning hole fixed on the upper end face of the insulating sheet body and a positioning block formed on the lower end face of the insulating sheet body, wherein the positioning hole and the positioning block are arranged diagonally on the insulating sheet body.
[0010] As a preferred embodiment of this utility model, the guide component is a guide groove, which matches the winding portion between the two winding slots, and the winding portion is slidably connected to the guide groove.
[0011] As a preferred embodiment of this utility model, the insulating sheet body is a silicon steel sheet, and the surface of the silicon steel sheet is coated with insulating varnish.
[0012] This utility model provides an insulating sheet for a transformer, which has the following advantages: multiple insulating sheet bodies are successively fitted onto two guide rods along two guide rods to achieve automatic alignment without manual alignment, which is highly accurate and low in cost. Then, shims and bolts are fitted onto the guide rods and the bolts are tightened to facilitate the subsequent winding of coils on the insulating sheet bodies. Attached Figure Description
[0013] Figure 1 This is a rendering of the effect after multiple insulating sheet bodies of this utility model are stacked together;
[0014] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;
[0015] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the present invention;
[0016] Figure 4 This is a schematic diagram of the upper end face structure of the insulating sheet body in Embodiment 3 of this utility model;
[0017] Figure 5 This is a schematic diagram of the lower end face structure of the insulating sheet body in Embodiment 3 of this utility model;
[0018] Figure 6 This is a structural schematic diagram of Embodiment 4 of the present invention;
[0019] Figure 7 This is a state diagram of Embodiment 4 of the present invention;
[0020] Figure 8 This is a top view of Embodiment 4 of this utility model.
[0021] In the diagram: 1. Heat dissipation slot, 2. Insulating sheet body, 3. Winding slot, 4. Guide rod, 5. Bolt, 6. Washer, 7. Thread, 8. Positioning hole, 9. Limiting chamfer, 10. Positioning block, 11. Guide groove body. Detailed Implementation
[0022] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0023] Therefore, a feature pointed out in this specification is used to describe one feature of one embodiment of the present invention, and does not imply that every embodiment of the present invention must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.
[0024] The principle and structure of this utility model will be described in detail below with reference to the accompanying drawings and embodiments:
[0025] refer to Figure 1 An insulating sheet for a transformer includes an insulating sheet body 2, and multiple insulating sheet bodies 2 are directly adhered together by epoxy resin.
[0026] Example 1
[0027] refer to Figure 2 An insulating sheet for a transformer includes an insulating sheet body 2, on which two winding slots 3 and two heat dissipation slots 1 are formed. The insulating sheet body 2 is in the shape of a sun. The two heat dissipation slots 1 are respectively located on the same side of the two winding slots 3. A guide assembly is provided on the insulating sheet body 2. The insulating sheet body 2 is a silicon steel sheet with an insulating varnish coating on its surface. The guide assembly includes a guide rod 4 and washers 6 and bolts 5 at both ends of the guide rod 4. Positioning holes 8 matching the guide rod 4 are formed at opposite corners of the insulating sheet body 2. Screws are provided at both ends of the guide rod 4. 7. Two bolts 5 are threadedly connected to both ends of the guide rod 4. The washer 6 is slidably fitted onto the guide rod 4, with one side abutting against the insulating sheet body 2 and the other side abutting against the bolt 5. First, screw the bolt 5 onto the bottom end of the guide rod 4, and then put the washer 6 onto the guide rod 4. Put multiple insulating sheet bodies 2 one by one onto the two guide rods 4 to achieve automatic alignment without manual alignment. This is highly accurate and low-cost. Then, put the washer 6 and bolt 5 onto the guide rod 4 and tighten the bolt 5 to facilitate the subsequent winding of the coil on the insulating sheet body 2.
[0028] Example 2
[0029] refer to Figure 3An insulating sheet for a transformer includes an insulating sheet body 2, on which two winding slots 3 and two heat dissipation slots 1 are formed. The insulating sheet body 2 is in the shape of a sun. The two heat dissipation slots 1 are respectively located on the same side of the two winding slots 3. A guide assembly is provided on the insulating sheet body 2. The insulating sheet body 2 is a silicon steel sheet with an insulating varnish coating on its surface. The guide assembly consists of two limiting chamfers 9, which are symmetrically fixed on opposite corners of the insulating sheet body 2. The chamfers 9 protrude from the insulating sheet body 2 at a height equal to the thickness of the insulating sheet body 2. When multiple insulating sheet bodies 2 are stacked sequentially, the limiting chamfers 9 at both ends of the insulating sheet body 2 have a limiting effect on the upper end face of the insulating sheet body 2, which avoids deviation during the stacking process of the insulating sheet bodies 2, improves the stacking accuracy, has low cost, and facilitates the subsequent installation of coils.
[0030] Example 3
[0031] refer to Figure 4-5 An insulating sheet for a transformer includes an insulating sheet body 2, on which two winding slots 3 and two heat dissipation slots 1 are formed. The insulating sheet body 2 is in the shape of a sun. The two heat dissipation slots 1 are respectively set on the same side of the two winding slots 3. A guide assembly is provided on the insulating sheet body 2. The insulating sheet body 2 is a silicon steel sheet with an insulating varnish coating on its surface. The guide assembly consists of a positioning hole 8 fixed on the upper end face of the insulating sheet body 2 and a positioning block 10 formed on the lower end face of the insulating sheet body 2. The positioning hole 8 and the positioning block 10 are both set on opposite corners of the insulating sheet body 2 and correspond to each other. When the insulating sheet bodies 2 are stacked together in sequence, the positioning hole 8 on the diagonal of the lower insulating sheet body 2 fits into the positioning block 10 of the upper insulating sheet body 2, realizing automatic alignment, which is convenient, fast and low cost.
[0032] Example 4
[0033] Referring to references 6-8, an insulating sheet for a transformer includes an insulating sheet body 2. The insulating sheet body 2 has two winding slots 3 and two heat dissipation slots 1. The insulating sheet body 2 is in the shape of a sun. The two heat dissipation slots 1 are respectively located on the same side of the two winding slots 3. A guide assembly is provided on the insulating sheet body 2. The insulating sheet body 2 is a silicon steel sheet with an insulating varnish coating on its surface. The guide assembly is a guide groove 11. The guide groove 11 matches the winding portion between the two winding slots 3. The winding portion and the guide groove 11 are slidably connected. Multiple insulating sheet bodies 2 are sequentially placed in the guide groove 11 and stacked one by one, which is convenient, quick, low-cost, and facilitates the subsequent installation of the coil.
[0034] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. An insulating sheet for a transformer, comprising an insulating sheet body (2), characterized in that, The insulating sheet body (2) has two winding slots (3) and two heat dissipation slots (1). The insulating sheet body (2) is in the shape of a "sun". The two heat dissipation slots (1) are respectively located on the same side of the two winding slots (3). The insulating sheet body (2) is provided with a guide component.
2. The insulating sheet of a transformer according to claim 1, characterized in that, The guide assembly includes a guide rod (4) and gaskets (6) and bolts (5) disposed at both ends of the guide rod (4). The insulating sheet body (2) has positioning holes (8) that match the guide rod (4) at opposite corners. Both ends of the guide rod (4) are provided with threads (7). The two bolts (5) are threaded to both ends of the guide rod (4). The gaskets (6) are slidably sleeved on the guide rod (4), with one side abutting against the insulating sheet body (2) and the other side abutting against the bolts (5).
3. The insulating sheet of a transformer according to claim 1, characterized in that, The guide component consists of two limiting chamfers (9), which are symmetrically fixed on opposite corners of the insulating sheet body (2). The limiting chamfers (9) protrude from the insulating sheet body (2) at a height equal to the thickness of the insulating sheet body (2).
4. The insulating sheet of a transformer according to claim 1, characterized in that, The guiding components are a positioning hole (8) fixed on the upper end face of the insulating sheet body (2) and a positioning block (10) opened on the lower end face of the insulating sheet body (2). The positioning hole (8) and the positioning block (10) are arranged on opposite corners of the insulating sheet body (2).
5. The insulating sheet of a transformer according to claim 1, characterized in that, The guiding component is a guide groove (11), which matches the winding portion between the two winding slots (3), and the winding portion is slidably connected to the guide groove (11).
6. The insulating sheet of a transformer according to claim 1, characterized in that, The insulating sheet body (2) is a silicon steel sheet, and the surface of the silicon steel sheet is coated with insulating paint.