Fan-shaped air gap cushion block iron core cake for core type reactor iron core

Abstract

The utility model discloses a fan-shaped air gap cushion block iron core cake for a core type reactor iron core. The fan-shaped air gap cushion block iron core cake comprises an annular iron core cake, an air gap cushion block body and heat dissipation channels. The annular iron core cake is of a radiation structure, and the annular iron core cake is formed by vacuum epoxy pouring of a plurality of horizontally stacked fan-shaped stage blocks; the plurality of air gap cushion block bodies are bonded on the annular iron core cake in an annular array, a heat dissipation channel is formed between every two adjacent air gap cushion block bodies, and the number of the heat dissipation channels is determined by the heating value of the iron core; the air gap cushion block body is of a fan-shaped structure; the fan-shaped air gap cushion block iron core cake for the core type electric reactor iron core is simple and reasonable in structure, ingenious in design, convenient to manufacture and install and good in mechanical strength, the problems that a round air gap cushion block core type electric reactor is complex in process and low in production efficiency are solved, and the fan-shaped air gap cushion block iron core cake for the core type electric reactor iron core is suitable for popularization and application. And the working efficiency and the material utilization rate are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of reactor manufacturing technology, specifically to a fan-shaped air gap pad core cake for core-type reactor cores. Background Technology

[0002] A core-type reactor is a reactor whose structure contains an iron core. It is usually called an iron-core reactor. Iron-core reactors increase their inductance by inserting an iron core into a solenoid, thereby enhancing their inductive characteristics. This design allows the reactor to generate a stronger magnetic field when energized, making it suitable for applications requiring a larger inductance.

[0003] For example, the Chinese utility model patent CN211828415U provides a radial core disc for a reactor, comprising wedge-shaped core teeth arranged in a radial ring around point A to form the core disc. An insulating sleeve is installed at the center of point A. Mesh fabric is installed on the outer edge and upper and lower surfaces of the core disc. An epoxy resin casting is poured over the mesh fabric and insulating sleeve, and evenly distributed circular fixing plates are installed on the epoxy resin casting. This design uses a radially laminated core, where the magnetic flux generated by the edge effect is parallel to the plane of the silicon steel sheet, significantly reducing eddy current losses.

[0004] For core-type reactors, multiple air gaps are required in the core column to obtain the corresponding reactance value. These air gaps are typically filled and bonded together using multiple circular spacers. For large-capacity reactors, the number of circular spacers used in a single air gap can exceed 100, and the total number of circular spacers used in the entire core column can reach several thousand. The manufacturing process for core columns with this structure is complex, the production time is long, and the material utilization rate is low. Utility Model Content

[0005] The purpose of this invention is to provide a sector-shaped air gap pad core cake for core reactor cores, in order to solve the problems of complex process and low production efficiency of core reactors using circular air gap pads mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fan-shaped air gap pad core cake for core-type reactor cores, comprising an annular core cake, air gap pad bodies, and heat dissipation channels; the annular core cake has a radial structure, and the annular core cake is formed by vacuum epoxy casting of multiple horizontally stacked fan-shaped blocks; several air gap pad bodies are bonded to the annular core cake in a ring array, and heat dissipation channels are formed between two adjacent air gap pad bodies, and the number of heat dissipation channels is determined by the heat generation of the core.

[0007] Preferably, the air gap pad body has a fan-shaped structure.

[0008] Preferably, the air gap pad body is made of stone, ceramic or other low elastic modulus non-magnetic materials.

[0009] Preferably, it also includes heat dissipation grooves; a plurality of the heat dissipation grooves are symmetrically arranged in a linear array on both sides of the air gap pad body.

[0010] Preferably, the heat dissipation groove has an arc-shaped structure.

[0011] Preferably, it also includes a flared groove; the flared groove is formed on the heat dissipation groove.

[0012] Preferably, the flared groove is an isosceles trapezoidal structure, and the dimension of the flared groove on the side closer to the heat dissipation groove is larger than the dimension of the flared groove on the side farther from the heat dissipation groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model improves work efficiency and material utilization by setting an air gap pad body. Furthermore, the heat dissipation channel formed between two adjacent air gap pad bodies can effectively dissipate heat from the transformer. Compared with the prior art, this utility model has a simple and reasonable structure, ingenious design, convenient manufacturing and installation, and good mechanical strength. It solves the problems of complex process and low production efficiency of using circular air gap pad core reactors, and effectively improves work efficiency and material utilization.

[0015] 2. By setting up heat dissipation grooves and designing them as arc-shaped structures, this utility model can extend the heat dissipation path and increase the heat transfer distance, allowing heat to dissipate gradually over a longer path, thereby reducing local overheating and improving heat dissipation efficiency.

[0016] 3. By setting a flared groove, the flared groove is set as an isosceles trapezoidal structure, and the size of the flared groove on the side closer to the heat dissipation channel is set to be larger than the size of the flared groove on the side farther away from the heat dissipation channel, so that the heat flowing in the heat dissipation channel can enter the heat dissipation channel more easily, thereby further improving the heat dissipation efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0018] Figure 2 Example 1 uses a conventional core cake with a circular air gap pad;

[0019] Figure 3 This is a schematic diagram of the overall structure of Example 2;

[0020] Figure 4 This is a schematic diagram of the air gap pad body in Example 2;

[0021] Figure 5 Example 2 Figure 3 Enlarged diagram of point A in the middle.

[0022] In the picture:

[0023] 1. Annular iron core disc; 2. Air gap pad body; 3. Heat dissipation channel; 4. Heat dissipation groove; 5. Flared groove; 6. Circular air gap pad. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] Please see Figures 1 to 2 This utility model provides a technical solution: a fan-shaped air gap pad core cake for core reactor core, including an annular core cake 1, an air gap pad body 2 and heat dissipation channels 3. The air gap pad body 2 is glued to the annular core cake 1, and heat dissipation channels 3 are left between the air gap pad bodies 2.

[0027] The annular core cake 1 has a radial structure and is made of multiple horizontally stacked fan-shaped blocks by vacuum epoxy casting. The air gap pad body 2 is made of stone, ceramic or other low elastic modulus non-magnetic materials. Its number is determined by the number of heat dissipation channels 3. The air gap pad body 2 is glued to the annular core cake 1. Heat dissipation channels 3 are provided between the air gap pad bodies 2. The number of heat dissipation channels 3 is determined by the heat generation of the core.

[0028] Figure 2 The traditional annular core cake 1 uses circular air gap pads 6. Multiple circular air gap pads 6 are usually bonded and filled between the annular core cake 1. For large-capacity reactors, the number of circular air gap pads 6 used for a single air gap can reach more than 100, and the number of circular air gap pads 6 used on the entire annular core cake 1 can reach thousands. The annular core cake 1 with this structure has a complex processing technology, a long production time, and a low material utilization rate.

[0029] This utility model has a reasonable and simple structure, is easy to manufacture and install, and has good mechanical strength. It solves the problems of complex process and low production efficiency of using a circular air gap pad 6-core reactor, and effectively improves work efficiency and material utilization.

[0030] Example 2

[0031] Please see Figures 3 to 5This utility model provides another technical solution: a fan-shaped air gap pad core cake for core-type reactor cores, including an annular core cake 1, an air gap pad body 2, and heat dissipation channels 3; the annular core cake 1 has a radial structure and is formed by vacuum epoxy casting of multiple horizontally stacked fan-shaped blocks; four air gap pad bodies 2 are bonded to the annular core cake 1 in a ring array, and heat dissipation channels 3 are formed between two adjacent air gap pad bodies 2, and the number of heat dissipation channels 3 is determined by the heat generation of the core; the air gap pad body 2 has a fan-shaped structure; the air gap pad body 2 is made of stone, ceramic, or other low elastic modulus non-magnetic materials.

[0032] This invention improves work efficiency and material utilization by setting an air gap pad body 2. Furthermore, the heat dissipation channel 3 formed between two adjacent air gap pad bodies 2 can effectively dissipate heat from the transformer. Compared with the prior art, this invention has a simple and reasonable structure, ingenious design, convenient manufacturing and installation, and good mechanical strength. It solves the problems of complex process and low production efficiency of using a circular air gap pad 6-core reactor, and effectively improves work efficiency and material utilization.

[0033] As a preferred embodiment, it also includes heat dissipation grooves 4; four heat dissipation grooves 4 are symmetrically arranged in a linear array on both sides of the air gap pad body 2; the heat dissipation grooves 4 have an arc structure.

[0034] This invention improves heat dissipation efficiency by setting up a heat dissipation groove 4, which is an arc-shaped structure. This extends the heat dissipation path and increases the heat transfer distance, allowing heat to dissipate gradually over a longer path, thereby reducing local overheating.

[0035] As a preferred embodiment, it also includes a flared groove 5; the flared groove 5 is formed on the heat dissipation groove 4; the flared groove 5 has an isosceles trapezoidal structure, and the dimension of the flared groove 5 on the side closer to the heat dissipation groove 4 is larger than the dimension of the flared groove 5 on the side farther away from the heat dissipation groove 4.

[0036] This invention improves heat dissipation efficiency by setting a flared groove 5, which is an isosceles trapezoidal structure, and setting the size of the flared groove 5 on the side closer to the heat dissipation groove 4 to be larger than the size of the side farther away from the heat dissipation groove 4. This allows the heat flowing through the heat dissipation channel 3 to enter the heat dissipation groove 4 more easily.

[0037] Working Principle: The air gap pad body 2 improves working efficiency and material utilization. Furthermore, the heat dissipation channel 3 formed between adjacent air gap pad bodies 2 effectively dissipates heat from the transformer. Simultaneously, the heat dissipation groove 4, with its arc-shaped structure, extends the heat dissipation path, increasing the heat transfer distance and allowing heat to dissipate gradually over a longer path, reducing localized overheating and thus improving heat dissipation efficiency. Additionally, the flared groove 5 facilitates easier entry of heat into the heat dissipation groove 4.

[0038] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sector-shaped air gap pad core cake for core-type reactor cores, characterized in that, It includes an annular core cake (1), air gap pad body (2), and heat dissipation channel (3); the annular core cake (1) has a radial structure and is made of multiple horizontally stacked fan-shaped blocks by vacuum epoxy casting; several air gap pad bodies (2) are bonded to the annular core cake (1) in an annular array, and a heat dissipation channel (3) is formed between two adjacent air gap pad bodies (2), and the number of heat dissipation channels (3) is determined by the heat generation of the core; the air gap pad body (2) has a fan-shaped structure. It also includes heat dissipation grooves (4); several heat dissipation grooves (4) are symmetrically arranged in a linear array on both sides of the air gap pad body (2); The heat dissipation groove (4) has an arc-shaped structure; It also includes a flared groove (5); the flared groove (5) is formed on the heat dissipation groove (4); The flared groove (5) is an isosceles trapezoidal structure, and the dimension of the flared groove (5) on the side closer to the heat dissipation groove (4) is larger than the dimension of the flared groove (5) on the side farther away from the heat dissipation groove (4).

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