Electric reactor iron core cake
By stacking silicon steel sheets into a tightly fit circular structure and setting up a fastening, blocking and grounding mechanism, the problems of insufficient effective area of the core cake and insufficient structural strength are solved, and the effect of reducing loss temperature rise and noise and improving product quality is achieved.
Patent Information
- Application Number
- CN202421954592.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-13
AI Technical Summary
The existing core cakes have insufficient effective cross-sectional area and insufficient structural strength, resulting in high loss of core reactor products, severe heat generation, and large noise vibration, affecting the safe operation of the power grid.
By bending the silicon steel sheets into a circle and stacking them in sequence, the adjacent silicon steel sheets are closely fitted, and a fastening mechanism, a blocking mechanism and a grounding mechanism are provided to improve the effective cross-sectional area and structural strength of the core cake.
It solves the problem of insufficient effective area of the core cake, improves structural strength, reduces core loss, temperature rise and noise, simplifies the production process, and improves product quality.
Smart Images
Figure CN223023019U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of reactors, and specifically to a reactor core cake. Background Art
[0002] During the entire power process, there is a type of device that restricts overcurrent or overvoltage, which we call a reactor. The reactor technology is introduced from abroad. The conventional structural forms are oil-immersed iron-core reactors, dry-type iron-core reactors, and dry-type air-core reactors. Among them, the iron core in the iron-core reactors plays the role of increasing magnetic permeability and inductance. The iron core column consists of two parts: the core cake and the air gap. The core cake is made of silicon steel sheets laminated together. At present, the domestic lamination methods of the core cake are mainly divided into the direct seam type and the radiation type. Due to insufficient effective cross-sectional area and insufficient structural strength, the iron-core reactor products have high losses, serious heating, large noise and vibration, which cause troubles to the safe operation of the power grid.
[0003] Based on this, a reactor core cake is now provided, which can eliminate the drawbacks of existing devices. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a reactor core cake to solve the problems in the background art.
[0005] To achieve the above purpose, the utility model provides the following technical solutions:
[0006] A reactor core cake includes a core cake body. A fastening mechanism is arranged around the core cake body. A blocking mechanism is arranged on the core cake body. A grounding mechanism is arranged between the core cake body and the epoxy ring (200).
[0007] Based on the above technical solutions, the utility model also provides the following optional technical solutions:
[0008] In an optional solution: The core cake body includes multiple silicon steel sheets, which are bent into a circular shape and laminated in sequence, and adjacent two silicon steel sheets are closely attached to each other.
[0009] In an optional solution: The fastening mechanism includes an epoxy ring, which is arranged around the core cake body.
[0010] In an optional solution: The blocking mechanism includes an insulating plate, which is arranged at the circular notch of the silicon steel sheet.
[0011] In an optional solution: The grounding mechanism includes a grounding wire, which is inserted into the silicon steel sheet on the outer circle of the core cake body.
[0012] In an optional solution: The inner diameter of the epoxy ring is the same as the outer diameter of the core cake body.
[0013] In an alternative embodiment: the thickness of the insulating plate is 0.5 mm, and the length of the insulating plate is greater than the distance from the outer circle to the inner circle of the core cake body.
[0014] In an alternative embodiment: the core cake body, the epoxy ring and the insulating plate have the same height.
[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0016] By providing a core cake composed of annular silicon steel sheets that are closely attached to each other, the present utility model solves the problem of insufficient effective area of a conventional core cake, while improving the structural strength, reducing the core loss temperature rise and noise, simplifying the production process, and improving the product quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a schematic structural diagram of the present utility model.
[0018] Figure 2 is a schematic structural diagram of the core cake body of the present utility model.
[0019] Figure 3 is a schematic structural diagram of the epoxy ring of the present utility model.
[0020] Figure 4 is a schematic structural diagram of the insulating plate of the present utility model.
[0021] Figure 5 is a schematic structural diagram of the grounding wire of the present utility model.
[0022] Annotation of reference numerals in the drawings: 100, core cake body; 101, silicon steel sheet; 200, epoxy ring; 300, insulating plate; 400, grounding wire. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.
[0024] In one embodiment, as Figure 1 shown, a reactor core cake includes a core cake body 100, a fastening mechanism is disposed around the core cake body 100, a blocking mechanism is disposed on the core cake body 100, and a grounding mechanism is disposed between the core cake body 100 and the epoxy ring 200. The fastening mechanism is used to tightly fix the core cake body 100, the blocking mechanism can reduce losses, and the grounding mechanism can reduce the risk of multi-point grounding of the core cake and improve the product quality.
[0025] In one embodiment, as Figure 2As shown in the figure, the core cake body 100 includes multiple silicon steel sheets 101. The silicon steel sheets 101 are bent into a circular shape and stacked in sequence. Adjacent silicon steel sheets 101 are closely attached to each other. The core cake body 100 is made by stacking the silicon steel sheets 101 in sequence. After stacking, there is no gap between adjacent silicon steel sheets 101, which greatly increases the effective cross-sectional area. Under the same design conditions, the core magnetic density can be effectively reduced, the core loss temperature rise and noise of the product can be reduced, and the performance and service life of the device can be improved. In addition, the production efficiency of the core cake can be improved through the stacking production method, and the product production cycle can be shortened.
[0026] In one embodiment, as Figure 3 shown, the fastening mechanism includes an epoxy ring 200. The epoxy ring 200 is arranged around the periphery of the core cake body 100. The core cake body 100 is tightened and fixed integrally through the epoxy ring 200, so as to improve the structural strength, reduce the vibration during the operation of the device, and improve the quality of the device.
[0027] In one embodiment, as Figure 4 shown, the blocking mechanism includes an insulating plate 300. The insulating plate 300 is arranged at the circular notch of the silicon steel sheet 101. By setting the insulating plate 300, it is used to block the silicon steel sheet 101 to prevent a single silicon steel sheet 101 from being connected into a complete circle and increasing the loss.
[0028] In one embodiment, as Figure 5 shown, the grounding mechanism includes a grounding wire 400. The grounding wire 400 is inserted into the silicon steel sheet 101 on the outer ring of the core cake body 100. By setting the grounding wire 400, the problem of multi-point grounding existing in the production and operation of conventional core cakes at present can be solved, and the product quality can be improved.
[0029] The above embodiment discloses a reactor core cake. During production, the silicon steel sheets 101 are gradually cut and then placed in a tooling for bending and stacking. After stacking, it forms a ring, and there is no gap between adjacent silicon steel sheets 101, so as to increase the effective cross-sectional area of the core cake, reduce the temperature rise loss and noise, and improve the structural strength. A 0.5-mm-thick insulating plate 300 is inserted into the notch of the ring on the core cake body 100 to cut off the ring, preventing a single silicon steel sheet from being connected into a complete circle and increasing the loss. The grounding wire 400 is inserted into the outer ring of the silicon steel sheet 101 for grounding to reduce the risk of multi-point grounding of the core cake. Finally, a ring of epoxy ring 200 is sleeved around the periphery of the stacked silicon steel sheets 101 to tightly fix the whole core cake.
[0030] As described above, it is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims
1. A reactor core cake, comprising a core cake body (100), characterized in that: A fastening mechanism is provided around the periphery of the core cake body (100), a blocking mechanism is provided on the core cake body (100), and a grounding mechanism is provided between the core cake body (100) and the epoxy ring (200); The core cake body (100) comprises a plurality of silicon steel sheets (101), wherein the silicon steel sheets (101) are bent into a circle and stacked in sequence, and two adjacent silicon steel sheets (101) are tightly fitted.
2. The reactor core according to claim 1, characterized in that: The fastening mechanism comprises an epoxy ring (200), and the epoxy ring (200) is arranged around the periphery of the core cake body (100).
3. The reactor core according to claim 1, characterized in that: The blocking mechanism comprises an insulating plate (300), and the insulating plate (300) is arranged at the annular notch of the silicon steel sheet (101).
4. The reactor core according to claim 1, characterized in that: The grounding mechanism comprises a grounding wire (400), and the grounding wire (400) is plugged into the silicon steel sheet (101) on the outer ring of the core body (100).
5. The reactor core according to claim 2, characterized in that: The inner diameter of the epoxy ring (200) is the same as the outer diameter of the core cake body (100).
6. The reactor core according to claim 3, characterized in that: The thickness of the insulating plate (300) is 0.5 mm, and the length of the insulating plate (300) is greater than the distance from the outer circle to the inner circle of the core cake body (100).
7. The reactor core according to claim 3, characterized in that: The core cake body (100), the epoxy ring (200) and the insulating plate (300) have the same height.