Detachable reactor magnetic core assembly

Abstract

The utility model discloses a detachable reactor magnetic core assembly which comprises a magnetic core lamination A, a magnetic core lamination B and fastening bolts, the magnetic core lamination A and the magnetic core lamination B are both in an L shape, and the two side walls of the magnetic core lamination A are detachably connected with an upper fixing plate and a lower fixing plate through the fastening bolts. The inner side wall of the upper fixing plate and the inner side wall of the lower fixing plate are detachably connected with magnetic core laminations B through fastening bolts, air gap partition plates are fixedly connected between the magnetic core laminations A and the magnetic core laminations B, the magnetic core laminations A and the magnetic core laminations B are combined to form a shape like a Chinese character'hui ', and the inner side walls of the magnetic core laminations A and the magnetic core laminations B are fixedly connected with epoxy inserting plates. According to the utility model, stable inductance characteristics can be maintained under different current loads, so that the requirements of a circuit can be better met, and modular connection is realized, so that when a magnetic core needs to be replaced or overhauled, the assembly can be quickly disassembled, the working efficiency is greatly improved, and the maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric reactor, concretely is detachable electric reactor magnetic core subassembly. BACKGROUND

[0002] In power systems and electronic equipment, electric reactors are a kind of commonly used electrical components, widely used in current limiting, filtering, reactive power compensation and other fields. Traditional electric reactor magnetic core subassembly usually adopts integral structure, which has many inconveniences in installation, disassembly and maintenance process. For example, when the magnetic core needs to be replaced due to failure, the whole electric reactor often needs to be disassembled, which not only has large workload, but also easily damages other components, increases maintenance cost and time. In addition, the material and structure design of some traditional electric reactor magnetic cores are not reasonable enough, resulting in poor magnetic performance and easy occurrence of magnetic saturation phenomenon, affecting the normal operation of electric reactor. At the same time, the shortcomings of insulation and mechanical performance may also lead to short circuit, damage and other problems of electric reactor in long-term use process, reducing the reliability and service life of the equipment. Therefore, the technical personnel in the art provides detachable electric reactor magnetic core subassembly to solve the problems raised in the above background technology. SUMMARY

[0003] The utility model aims at providing detachable electric reactor magnetic core subassembly to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] The detachable electric reactor magnetic core subassembly comprises a magnetic core lamination A, a magnetic core lamination B and a tight bolt, the magnetic core lamination A and the magnetic core lamination B are both L-shaped, the upper fixed plate and the lower fixed plate are detachably connected to the two side walls of the magnetic core lamination A through the tight bolt, the magnetic core lamination B is detachably connected to the inner side walls of the upper fixed plate and the lower fixed plate through the tight bolt, the air gap partition plate is fixedly connected between the magnetic core lamination A and the magnetic core lamination B, the magnetic core lamination A and the magnetic core lamination B are combined in a meandering shape, and the inner side walls of the magnetic core lamination A and the magnetic core lamination B are both fixedly connected with the epoxy plugboard.

[0006] Further, the sleeve is fixedly connected to the outer side wall of the magnetic core lamination A and the magnetic core lamination B, and the left and right pads are fixedly connected to the outer side wall of the sleeve.

[0007] Further, the outer side wall of the left and right pads is fixedly connected with the gauze belt.

[0008] Further, the outer side wall of the sleeve is fixedly connected with the winding frame, and the winding grooves for winding the winding are arranged uniformly on the side wall of the winding frame.

[0009] Further, the magnetic core lamination A and the magnetic core lamination B are made of cold-rolled silicon steel sheet material.

[0010] By adopting the above technical solution

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. By precisely controlling the air gap length in the magnetic circuit through the air gap partition, the inductance characteristics of the reactor are optimized. An appropriate air gap can prevent core saturation and enable the reactor to maintain stable inductance characteristics under different current loads, thereby better meeting the needs of the circuit. Core laminations A and B are modularly connected to the upper and lower fixing plates by set bolts. When it is necessary to replace the core or perform maintenance, the components can be quickly disassembled, which greatly improves work efficiency and reduces maintenance costs.

[0013] 2. The winding slot design on the winding frame makes the winding more neat and uniform, which is conducive to improving the electromagnetic performance of the winding, reducing mutual interference between windings, and thus improving the overall performance of the reactor. The epoxy insert is fixed to the inner wall of the magnetic core, enhancing the insulation performance between the winding and the magnetic core, while improving the overall structural strength and preventing short circuits between the winding and the magnetic core. The sleeve wraps around the magnetic core laminations, and together with the left and right pads and yarn tape, forms a multi-layer mechanical constraint, reducing vibration and noise during operation, which can effectively improve the service life and reliability of the reactor. Attached Figure Description

[0014] Fig. 1 This is a schematic diagram of the overall structure of the detachable reactor core assembly.

[0015] Fig. 2 This is a schematic diagram of the planar structure at the core lamination of a detachable reactor core assembly.

[0016] Fig. 3 This is a cross-sectional view of a detachable reactor core assembly.

[0017] In the diagram: 1. Magnetic core lamination A; 2. Magnetic core lamination B; 3. Upper fixing plate; 4. Lower fixing plate; 5. Set bolt; 6. Air gap partition; 7. Epoxy insert plate; 8. Sleeve; 9. Left and right spacers; 10. Yarn tape; 11. Winding frame. Detailed Implementation

[0018] To make the technical means, creative features, achieved objectives and effects of this utility model easier to understand, the present utility model is further described below in conjunction with specific embodiments. In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0019] Please see Figs. 1-3 This utility model provides an embodiment of a detachable reactor core assembly, including core laminations A1 and B2 and set bolts 5. Core laminations A1 and B2 are both L-shaped. An upper fixing plate 3 and a lower fixing plate 4 are detachably connected to the two side walls of core lamination A1 via set bolts 5. Core lamination B2 is detachably connected to the inner side walls of the upper fixing plate 3 and the lower fixing plate 4 via set bolts 5. An air gap partition 6 is fixedly connected between core laminations A1 and B2. Core laminations A1 and B2 are combined in a U-shape. Epoxy inserts 7 are fixedly connected to the inner side walls of both core laminations A1 and B2. Both lamination A and core lamination B are L-shaped. After being connected to the upper fixing plate 3 and the lower fixing plate 4 by the set bolt 5, they are combined into a U-shape to form a closed magnetic circuit. The air gap length in the magnetic circuit is precisely controlled by the air gap partition 6 to optimize the inductance characteristics of the reactor. An appropriate air gap can prevent core saturation and enable the reactor to maintain stable inductance characteristics under different current loads, thereby better meeting the needs of the circuit. Core lamination A and core lamination B are modularly connected to the upper fixing plate 3 and the lower fixing plate 4 by the set bolt 5. When it is necessary to replace the core or perform maintenance, the components can be quickly disassembled, which greatly improves work efficiency and reduces maintenance costs.

[0020] In this embodiment, sleeves 8 are fitted onto the surfaces of both magnetic core laminations A1 and B2. Left and right pads 9 are fixedly connected to the outer walls of the sleeves 8, and yarn tapes 10 are fixedly connected to the outer walls of the left and right pads 9. A winding frame 11 is fixedly connected to the outer wall of the sleeves 8. The winding frame 11 has evenly arranged winding slots on its sidewalls for winding the coils. Both magnetic core laminations A1 and B2 are made of cold-rolled silicon steel sheets. When current flows through the windings, a magnetic field is generated in the magnetic circuit according to the principle of electromagnetic induction. Changes in the magnetic field then induce current in the windings. The electromotive force enables the reactor to impede and regulate the current. The winding slot design on the winding frame 11 makes the winding more neat and uniform, which is conducive to improving the electromagnetic performance of the winding and reducing mutual interference between windings, thereby improving the overall performance of the reactor. The epoxy insert 7 is fixed to the inner wall of the magnetic core, enhancing the insulation performance between the winding and the magnetic core, while improving the overall structural strength and preventing short circuits between the winding and the magnetic core. The sleeve 8 wraps the magnetic core laminations, and together with the left and right pads 9 and the yarn tape 10, forms a multi-layer mechanical constraint, reducing vibration and noise during operation, and effectively improving the service life and reliability of the reactor.

[0021] Both magnetic core laminations A and B are L-shaped. After being connected to the upper fixing plate 3 and the lower fixing plate 4 by the set bolt 5, they are combined into a loop shape to form a closed magnetic circuit. The air gap length in the magnetic circuit is precisely controlled by the air gap partition 6 to optimize the inductance characteristics of the reactor. The winding frame 11 has evenly arranged winding slots on its side wall for winding. When current passes through the winding, a magnetic field is generated in the magnetic circuit according to the principle of electromagnetic induction. The change of the magnetic field will induce an electromotive force in the winding, thereby realizing the reactor's role in impeding and regulating the current. The winding slot design on the winding frame 11 makes the winding more neat and uniform, which is conducive to improving the electromagnetic performance of the winding, reducing mutual interference between windings, and thus improving the overall performance of the reactor.

[0022] The air gap length in the magnetic circuit is precisely controlled by the air gap partition 6, optimizing the inductance characteristics of the reactor. An appropriate air gap can prevent core saturation, allowing the reactor to maintain stable inductance characteristics under different current loads, thus better meeting the circuit requirements. Core laminations A and B are modularly connected to the upper fixing plate 3 and lower fixing plate 4 by set bolts 5. When it is necessary to replace the core or perform maintenance, the components can be quickly disassembled, greatly improving work efficiency and reducing maintenance costs. The winding slot design on the winding frame 11 makes the winding more neat and uniform, which is conducive to improving the electromagnetic performance of the winding and reducing mutual interference between windings, thereby improving the overall performance of the reactor. The epoxy insert 7 is fixed to the inner wall of the core, enhancing the insulation performance between the winding and the core, while improving the overall structural strength and preventing short circuits between the winding and the core. The sleeve 8 wraps the core laminations, and together with the left and right pads 9 and the yarn tape 10, forms a multi-layer mechanical constraint, reducing vibration and noise during operation, and effectively improving the service life and reliability of the reactor.

[0023] This specification describes the embodiments, but not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A detachable reactor core assembly, characterized in that, The device includes magnetic core laminations A (1), B (2), and set bolts (5). Both magnetic core laminations A (1) and B (2) are L-shaped. The two side walls of magnetic core lamination A (1) are detachably connected to an upper fixing plate (3) and a lower fixing plate (4) via set bolts (5). The inner side walls of the upper fixing plate (3) and the lower fixing plate (4) are detachably connected to magnetic core laminations B (2) via set bolts (5). An air gap partition (6) is fixedly connected between magnetic core laminations A (1) and B (2). The magnetic core laminations A (1) and B (2) are combined in a U-shape. Epoxy inserts (7) are fixedly connected to the inner side walls of both magnetic core laminations A (1) and B (2).

2. The detachable reactor core assembly according to claim 1, characterized in that, Both magnetic core stack A (1) and magnetic core stack B (2) are fitted with sleeves (8), and left and right pads (9) are fixedly connected to the outer side wall of the sleeves (8).

3. The detachable reactor core assembly according to claim 2, characterized in that, The outer walls of the left and right pads (9) are fixedly connected with yarn strips (10).

4. The detachable reactor core assembly according to claim 2, characterized in that, The outer wall of the sleeve (8) is fixedly connected to a winding frame (11), and the side wall of the winding frame (11) is provided with evenly arranged winding slots for winding the winding.

5. The detachable reactor core assembly according to claim 1, characterized in that, The magnetic core stack A(1) and magnetic core stack B(2) are made of cold-rolled silicon steel sheet material.

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