Fixed structure of annular air-core reactor

Abstract

The present invention relates to a fixing structure of an annular hollow reactor, comprising a large fixing ring, a coil and a small fixing ring; two small fixing rings are symmetrically arranged on the front and rear sides of the large fixing ring, a number of coils are evenly distributed on the circumference of the large fixing ring, and the small fixing ring is sleeved inside the coil; the coil comprises a winding ring and a high-voltage coil wound on the winding ring; fixing plates are provided at both the upper and lower ends of the inner circumference of the coil, and the fixing plates are connected to the large fixing ring via pins; a number of slots for accommodating the inner sides of the winding ring are provided on the small fixing ring, and the small fixing ring is fixed to the winding ring by binding with an insulating tie; the fixing structure has good stability, and no direct contact between the coil and the plate occurs at the four fixing points of the coil, thereby avoiding insulation damage of the high-voltage coil caused by transportation friction, and making the hollow reactor sufficiently safe and reliable.

Description

Technical Field

[0001] The present invention relates to the field of high-voltage electrical equipment, and in particular to a fixing structure of an annular air-core reactor. Background Art

[0002] High-power, high-frequency, and high-voltage toroidal air-core reactors are gradually being used in industrial equipment. Their specialized technical requirements require reliable stability and safety, while also ensuring ease of manufacture. Furthermore, in the context of energy conservation, emission reduction, and carbon neutrality, material conservation is crucial, particularly minimizing the use of insulating materials such as epoxy resin and glass fiber. Ease of mass production and low cost are also key considerations.

[0003] Currently, the coils of large toroidal air-core reactors are typically fixed at only two points, resulting in low structural strength. This can easily lead to overall collapse or deformation during long-distance transportation and operation, and this is difficult to completely resolve. Furthermore, existing fixing points often directly contact the plate holding the coils with the wires. Friction between the plate and the wires during transportation can damage the coil insulation, potentially damaging the entire air-core reactor or posing a safety hazard. Summary of the Invention

[0004] The purpose of the present invention is to address the above shortcomings and provide a fixing structure for an annular air-core reactor.

[0005] The solution adopted by the present invention to solve the technical problem is a fixing structure of an annular air-core reactor, comprising a large fixing ring, a coil, and a small fixing ring;

[0006] Two small fixing rings are symmetrically arranged on the front and rear sides of the large fixing ring. A plurality of wire cakes are evenly distributed on the circumference of the large fixing ring, and the small fixing rings are sleeved inside the wire cakes.

[0007] The coil comprises a winding ring and a high-voltage coil wound on the winding ring;

[0008] The upper and lower ends of the inner circumference of the wire cake are both provided with fixing plates, which are connected to the large fixing ring via pins;

[0009] The small fixing ring is provided with a plurality of slots for accommodating the inner side edges of the winding ring, and the small fixing ring is fixed to the winding ring by binding with an insulating strap.

[0010] Furthermore, the large fixing ring is composed of two large semicircular rings connected by insulating fasteners, and the small fixing ring is composed of two small semicircular rings.

[0011] Furthermore, a docking step is provided at the end of the large semicircular ring, and a docking fixing hole for installing an insulating fastener is opened on the docking step.

[0012] Furthermore, chamfers are provided at both ends of the docking step.

[0013] Furthermore, the large fixing ring is provided with a hole for installing a plug nail.

[0014] Furthermore, the fixing plate includes two symmetrically arranged plate bodies, a through-plate groove for accommodating the outer wall of the large fixing ring is formed between the two plate bodies, and the plate body is provided with a pin opening, which corresponds to the hole portion.

[0015] Furthermore, an inner reinforcing rib is provided in the middle of the winding ring, and adjacent plate bodies of adjacent fixing plates are connected via the inner reinforcing rib, and the size of the slot is adapted to the size of the inner reinforcing rib.

[0016] Furthermore, the small fixing ring is provided with tie holes on both sides of the slot.

[0017] Furthermore, the large fixing ring is provided with a plurality of heat dissipation holes and mounting holes.

[0018] Furthermore, four coil baffles are evenly distributed on the circumference of the outer circumference of the winding ring, and the fixed plate is located between two adjacent coil baffles. The coil baffle includes a plate body spaced apart from each other, and a chamfer is provided on the outer end of the plate body.

[0019] Compared with the prior art, the present invention has the following beneficial effects: good structural stability, no direct contact between the coil and the plate occurs at the four fixed points of the coil, thus avoiding damage to the high-voltage coil insulation caused by transportation friction, making the air-core reactor sufficiently safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below with reference to the accompanying drawings.

[0021] Figure 1 This is the overall diagram of the fixed structure.

[0022] Figure 2 This is a diagram of the clamping and fixing of the large fixing ring, small fixing ring and wire coil.

[0023] Figure 3 This is the locking connection diagram of the large fixing ring.

[0024] Figure 4 This is the connection diagram of the wire coil and the large fixing ring.

[0025] Figure 5 This is a detailed view of the inner ring of the winding ring.

[0026] Figure 6 It is the plan view of a large semicircle.

[0027] Figure 7 Detail of the small semicircle.

[0028] In the figure: 1-coil; 11-high-voltage coil; 12-winding ring; 13-fixing plate; 14-pin opening; 15-through-plate slot; 16-inner reinforcement rib; 2-pin; 3-large fixing ring; 31-hole; 32-heat dissipation hole; 33-docking fixing hole; 34-docking step; 35-mounting hole; 36-through-ring chamfer; 4-insulation fastening; 41-insulation bolt; 42-insulation nut; 5-small fixing ring; 51-tie hole; 52-slot; 6-insulating tie. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0030] like Figure 1-7 As shown, a fixing structure of an annular air-core reactor includes a large fixing ring 3, a coil 1, and a small fixing ring 5;

[0031] Two small fixing rings are symmetrically arranged on the front and rear sides of the large fixing ring. A number of wire cakes are evenly distributed on the circumference of the large fixing ring. The number of wire cakes is between 15 and 40. The small fixing rings are set inside the wire cakes.

[0032] The coil comprises a winding ring 12 and a high-voltage coil 11 wound on the winding ring;

[0033] The upper and lower ends of the inner circumference of the coil are provided with fixing plates 13, which are connected to the large fixing ring via pins, thus fixing the upper and lower quadrants of the coil;

[0034] The small fixing ring is provided with a plurality of slots 52 for accommodating the inner side of the winding ring. The small fixing ring is fixed to the winding ring by means of an insulating tie 6, thereby fixing the other two quadrants of the winding ring. The small fixing rings are all placed on the inner ring of the coil and are not in direct contact with the high-voltage coil. Thus, the four quadrants of all coils are fixed, and the structural stability is excellent. Since there is no direct contact between the coil and the plate at all the fixing points of the coil, the insulation damage of the high-voltage coil caused by transportation friction is avoided, making the air-core reactor sufficiently safe and reliable.

[0035] In this embodiment, the winding ring and the plug nail are both made of F-class heat-resistant PET material, which can operate safely for a long time at 155°C; the large fixing ring and the small fixing ring are made of H-class insulating epoxy resin board, which has high mechanical strength and can operate safely for a long time at 180°C; the insulating cable tie is made of 180°C temperature-resistant glass fiber nylon.

[0036] In this embodiment, the large fixing ring is composed of two large semicircular rings connected by insulating fasteners 4, and the small fixing ring is composed of two small semicircular rings. The two small semicircular rings can be connected together by insulating fasteners to form a circle, or they can be not connected together; the insulating fasteners are insulating bolts 41 and insulating nuts 42, and are made of H-grade epoxy glass fiber board.

[0037] In this embodiment, a docking step 34 is provided at the end of the large semicircular ring, and a docking fixing hole 33 for installing an insulating fastener is opened on the docking step.

[0038] In this embodiment, chamfers 36 are provided at both ends of the docking step.

[0039] In this embodiment, the large fixing ring is provided with a hole 31 for installing a plug nail.

[0040] In this embodiment, the fixing plate includes two symmetrically arranged plate bodies, and a plate-through groove 15 for accommodating the outer wall of the large fixing ring is formed between the two plate bodies. The plate bodies are provided with a pin opening 14, which corresponds to the hole portion.

[0041] In this embodiment, an inner reinforcing rib 16 is provided in the middle of the winding ring, and adjacent plates of adjacent fixing plates are connected via the inner reinforcing rib. The size of the slot is adapted to the size of the inner reinforcing rib.

[0042] In this embodiment, the small fixing ring is provided with tie holes 52 on both sides of the slot.

[0043] In this embodiment, a plurality of heat dissipation holes 32 and mounting holes 35 are formed on the large fixing ring.

[0044] In this embodiment, four coil baffles are evenly distributed on the outer circumference of the winding ring, and the fixed plate is located between two adjacent coil baffles. The coil baffle includes a plate body spaced apart from each other, and a chamfer is provided on the outer end of the plate body.

[0045] If this patent discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, using bolts or screws), or as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by a casting process) (except where it is obviously impossible to use an integrated forming process).

[0046] In the description of this patent, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this patent, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0047] The preferred embodiments listed above further illustrate the objectives, technical solutions and advantages of the present invention in detail. It should be understood that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fixing structure for an annular air-core reactor, characterized in that: Including large fixing ring, wire cake and small fixing ring; Two small fixing rings are symmetrically arranged on the front and rear sides of the large fixing ring. A plurality of wire cakes are evenly distributed on the circumference of the large fixing ring, and the small fixing rings are sleeved inside the wire cakes. The coil comprises a winding ring and a high-voltage coil wound on the winding ring; The upper and lower ends of the inner circumference of the wire cake are both provided with fixing plates, which are connected to the large fixing ring via pins; The small fixing ring is provided with a plurality of slots for accommodating the inner side edges of the winding ring, and the small fixing ring is fixed to the winding ring by binding with an insulating strap.

2. The fixing structure of the annular air-core reactor according to claim 1, characterized in that: The large fixing ring is composed of two large semicircular rings connected by insulating fasteners, and the small fixing ring is composed of two small semicircular rings.

3. The fixing structure of the annular air-core reactor according to claim 2, characterized in that: The end of the large semicircular ring is provided with a docking step, and a docking fixing hole for installing an insulating fastener is opened on the docking step.

4. The fixing structure of the annular air-core reactor according to claim 3, characterized in that: Both ends of the docking step are provided with chamfers.

5. The fixing structure of the annular air-core reactor according to any one of claims 1 to 4, characterized in that: The large fixing ring is provided with a hole for installing a plug nail.

6. The fixing structure of the annular air-core reactor according to claim 5, characterized in that: The fixing plate includes two symmetrically arranged plate bodies, a plate-penetrating groove for accommodating the outer side wall of the large fixing ring is formed between the two plate bodies, and the plate bodies are provided with a plug nail opening, which corresponds to the hole portion.

7. The fixing structure of the annular air-core reactor according to claim 5, characterized in that: An inner reinforcing rib is provided in the middle of the winding ring, and adjacent plate bodies of adjacent fixing plates are connected via the inner reinforcing rib. The size of the slot is adapted to the size of the inner reinforcing rib.

8. The fixing structure of the annular air-core reactor according to claim 5, characterized in that: The small fixing ring is provided with tie holes on both sides of the clamping slot.

9. The fixing structure of the annular air-core reactor according to claim 5, characterized in that: The large fixing ring is provided with a plurality of heat dissipation holes and mounting holes.

10. The fixing structure of the annular air-core reactor according to claim 5, characterized in that: Four coil baffles are evenly distributed on the outer circumference of the winding ring, and the fixing plate is located between two adjacent coil baffles. The coil baffles include plate bodies spaced apart in an upper and lower manner, and the outer ends of the plate bodies are chamfered.

Images