Hollow reactor with silica gel umbrella skirt

Abstract

The utility model belongs to the technical field of supporting insulator, disclose a kind of hollow reactor with silica gel umbrella skirt;The reactor includes the pipe body of epoxy resin material, the coil is embedded in the pipe wall inside of pipe body, the first terminal and the second terminal are respectively connected in the both ends of coil, the first terminal is placed in one end inside pipe body, and it is through the lateral outer wall of pipe body, the second terminal is placed in the other end inside pipe body, and it is through the end section, the umbrella skirt of the silica gel material of multiple protruding is fixed on the outer wall of pipe body, the multiple umbrella skirt is evenly distributed along the circumferential and axial of outer wall of pipe body, forms multistage umbrella skirt group;When using, first terminal and second terminal are connected into circuit and can work;The utility model has significantly improved the insulation reliability, mechanical strength and anti-pollution flashover ability of reactor under outdoor environment.

Description

Technical Field

[0001] This utility model belongs to the field of reactor structure technology, specifically relating to a hollow reactor with silicone umbrella skirt. Background Technology

[0002] Reactors are key devices in power systems that perform functions such as current limiting, current stabilization, reactive power compensation, filtering, arc suppression, and motor starting. Their performance reliability is crucial to the safe and stable operation of the power grid. Air-core reactors use non-magnetic materials to construct the magnetic circuit, completely eliminating magnetic saturation. They exhibit extremely high inductive linearity across the entire operating current range, thus possessing irreplaceable advantages in applications requiring precise inductance control—such as high-order harmonic filtering, parallel compensation, and current limiting.

[0003] However, when applied to outdoor environments, their external insulation systems face severe challenges, the most prominent being the imbalance between anti-pollution flashover requirements and equipment size. Traditional outdoor reactors mostly use pure epoxy resin castings or porcelain insulators as external insulation, which presents two major problems: First, the hydrophobicity of epoxy resin is permanently lost with ultraviolet aging, and porcelain insulators are hydrophilic materials, making them prone to pollution flashover in polluted and humid environments; second, to meet high pollution level requirements, the height and diameter must be significantly increased to extend the geometric creepage distance, leading to a sharp increase in product size and weight, resulting in high material costs, difficulties in transportation and installation, and a large footprint. Therefore, there is an urgent need for a new type of outdoor reactor that can fundamentally solve the anti-pollution flashover problem and achieve a compact structure. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a hollow reactor with a silicone umbrella skirt. This reactor has excellent anti-pollution flashover capability. Its unique silicone umbrella skirt structure design brings a significant advantage: under the same voltage level and while ensuring the same effective creepage distance, the size of the reactor can be effectively reduced.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A hollow reactor with silicone umbrella skirts includes an epoxy resin tube 10. A coil 11 is embedded inside the tube wall of the tube 10. A first terminal 9 and a second terminal 13 are respectively connected to the two ends of the coil 11. The first terminal 9 is located at one end inside the tube 10 and penetrates the outer wall of the tube 10. The second terminal 13 is located at the other end inside the tube 10 and penetrates the cross section of that end. Multiple protruding silicone umbrella skirts 2 are fixed on the outer wall of the tube 10. The multiple umbrella skirts 2 are evenly distributed along the circumference and axial direction of the outer wall of the tube to form a multi-level umbrella skirt group.

[0006] The inner wall of the tube body 10 is fitted with an inner cylinder 7, the outer wall of the inner cylinder 7 is wound with a coil 11, and an outer cylinder 3 is sleeved on the outside of the coil 11. The inner cylinder 7 and the outer cylinder 3 are respectively fixed with a top plate 4 and a bottom plate 1 at both ends. Both the top plate 4 and the bottom plate 1 are provided with through holes 16 that are adapted to the inner cylinder 7. The first terminal 9 penetrates the outer cylinder 3, the second terminal 13 penetrates the bottom plate 1, and the umbrella skirt 2 is fixed to the outer wall of the outer cylinder 3.

[0007] The inner cylinder 7, outer cylinder 3, top plate 4, and bottom plate 1 are all made of epoxy resin.

[0008] The top plate 4 and the bottom plate 1 are respectively provided with a first annular groove 14 adapted to the inner cylinder 7 and / or the outer cylinder 3 on their sides. The two ends of the inner cylinder 7 are respectively placed in the first annular groove 14 of the top plate 4 and the bottom plate 1, and the two ends of the outer cylinder 3 are respectively placed in the second annular groove 15 of the top plate 4 and the bottom plate 1.

[0009] Both ends of the tube 10 are provided with multiple inserts 8. Part of the insert 8 is embedded inside the tube 10, and the other part is embedded inside the top plate 4 or the bottom plate 1.

[0010] A protective cover 5 is fixed above the top plate 4, and the protective cover 5 covers the through hole 16.

[0011] The coil 11 has a multi-segment structure, with a silicone pad 12 placed between adjacent segments.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. Excellent anti-flashover performance and optimized creepage distance: This invention uses silicone to make the umbrella skirt 2. Utilizing silicone's excellent hydrophobicity and hydrophobic migration properties, it effectively prevents the formation of a continuous conductive water film on the surface in dirty and humid environments, significantly improving the utilization efficiency of the creepage distance. This characteristic brings a key advantage: while meeting the same insulation level requirements, the design of this invention requires a shorter geometric creepage distance than similar products using traditional hydrophobic materials (such as pure epoxy resin). This directly makes the reactor's external insulation structure more compact, effectively reducing the overall diameter and volume of the product, saving material costs and transportation and installation space.

[0013] 2. Modularity and Maintainability: This utility model uses multiple umbrella skirts 2 to form an umbrella skirt assembly, which is fixed to the outer wall of the outer cylinder 3, resulting in a simple and reliable structure. Even if individual umbrella skirts are damaged in extreme cases, they can be locally repaired or replaced, reducing subsequent maintenance costs.

[0014] 3. It has good integrity and insulation performance, and is easy to mass-produce: The present invention has an inner cylinder 7, which facilitates the winding of the coil 11. The inner cylinder 7 and the outer cylinder 3 and the top plate 4 and bottom plate 1 fixed at both ends respectively form a cavity, which facilitates the pouring of epoxy resin into the cavity to form the tube body 10. It is cast in one piece, has good integrity and insulation performance, and is easy to form a standardized production process.

[0015] 4. Good external heat dissipation effect: The present invention has through holes 16 on both the top plate 4 and the bottom plate 1 that are adapted to the inner cylinder 7, so that the inner cylinder 7 can be connected to the outside, thereby improving the external heat dissipation effect.

[0016] 5. Structural stability: This utility model connects the top plate 4, bottom plate 1, inner cylinder 7 and outer cylinder 3 through the first annular groove 14 and the second annular groove 15, thereby improving the overall stability of the structure.

[0017] 6. Enhanced structural stability: This utility model further improves the overall structural stability by setting an insert 8 between the tube body 10 and the top plate 4 and bottom plate 1.

[0018] 7. Rain and dust protection effect: This utility model improves the rain and dust protection effect by setting a protective cover 5 above the top plate 4, which covers the through hole 16.

[0019] 8. Good internal heat dissipation and adaptability: This utility model adopts a multi-segment coil 11 structure and sets silicone pads 12 between segments. This design can effectively buffer thermal expansion and contraction stress and improve heat dissipation.

[0020] In summary, the modular design of this utility model facilitates maintenance and production, has excellent anti-flashover performance and creepage distance, as well as good integrity, stability, insulation and heat dissipation, and also has certain rainproof and dustproof effects and adaptability. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is a cross-sectional view of the present invention.

[0023] Figure 3 This is an enlarged view of the internal structure of this utility model.

[0024] Figure 4 This is a bottom view of the present invention.

[0025] Figure 5 This is a top view of the present invention.

[0026] In the diagram, 1 is the base plate, 2 is the umbrella skirt, 3 is the outer cylinder, 4 is the top plate, 5 is the protective cover, 6 is the bolt, 7 is the inner cylinder, 8 is the insert, 9 is the first terminal, 10 is the tube body, 11 is the coil, 12 is the silicone pad, 13 is the second terminal, 14 is the first annular groove, 15 is the second annular groove, and 16 is the through hole. Detailed Implementation

[0027] The structural and working principles of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] like Figure 1 , Figure 2 , Figure 3 As shown, a hollow reactor with silicone umbrella skirts includes an epoxy resin tube 10. A coil 11 is embedded inside the tube wall of the tube 10. The two ends of the coil 11 are respectively connected to a first terminal 9 and a second terminal 13. The first terminal 9 is located at one end inside the tube 10 and penetrates the outer wall of the tube 10. The second terminal 13 is located at the other end inside the tube 10 and penetrates the cross section of that end. Multiple protruding silicone umbrella skirts 2 are fixed on the outer wall of the tube 10. The multiple umbrella skirts 2 are evenly distributed along the circumference and axial direction of the outer wall of the tube to form a multi-level umbrella skirt group. The silicone umbrella skirts 2 provide excellent hydrophobicity and hydrophobic migration, which makes it difficult for polluting media to form a continuous conductive water film on its surface, greatly improving the effectiveness of the unit creepage distance. Based on this characteristic, in the design of this utility model, compared with the umbrella skirts of traditional epoxy resin or porcelain insulators, a shorter geometric creepage distance can be used to achieve the same pollution level requirements, thereby making the product structure more compact.

[0029] The inner wall of the tube 10 is fitted with an inner cylinder 7, the outer wall of the inner cylinder 7 is wound with a coil 11, and an outer cylinder 3 is sleeved around the coil 11. A top plate 4 and a bottom plate 1 are fixed to the two ends of the inner cylinder 7 and the outer cylinder 3, respectively. Figure 4 As shown, both the top plate 4 and the bottom plate 1 are provided with through holes 16 that are compatible with the inner cylinder 7, which improves the heat dissipation capacity. The first terminal 9 penetrates the outer cylinder 3, and the second terminal 13 penetrates the bottom plate 1. The first terminal 9 and the second terminal 13 are used to connect to external electrical components. The umbrella skirt 2 is adhered to the outer wall of the outer cylinder 3 by a high-strength adhesive.

[0030] The inner cylinder 7, outer cylinder 3, top plate 4, and bottom plate 1 are all made of epoxy resin.

[0031] The top plate 4 and bottom plate 1 are respectively provided with a first annular groove 14 adapted to the inner cylinder 7 and / or the outer cylinder 3 on their sides near the inner cylinder 7 and / or the outer cylinder 3. The two ends of the inner cylinder 7 are respectively placed in the first annular groove 14 of the top plate 4 and the bottom plate 1, and the two ends of the outer cylinder 3 are respectively placed in the second annular groove 15 of the top plate 4 and the bottom plate 1. During assembly, the inner cylinder 7 is placed in the first annular groove 14 of the top plate 4 and the bottom plate 1, and a coil 11 is wound on the outer wall of the inner cylinder 7. Then the outer cylinder 3 is placed in the second annular groove 15 of the top plate 4 and the bottom plate 1. Finally, epoxy resin is poured into the tubular cavity formed by the combination of the inner cylinder 7, the outer cylinder 3, the top plate 4 and the bottom plate 1 to form a tube body 10. The tube body 10 is formed by one-time casting and has good integrity and insulation performance.

[0032] Three inserts 8 are provided at both ends of the tube body 10. Each insert 8 is partially embedded inside the tube body 10 and partially embedded inside the top plate 4 or bottom plate 1, thereby firmly combining the epoxy resin cast tube body 10 with the top plate 4 into a whole.

[0033] like Figure 5 As shown, a protective cover 5 is fixed above the top plate 4 by bolts 6. The protective cover 5 covers the through hole 16 and serves to prevent rain and dust.

[0034] The coil 11 has a three-section structure, with a silicone pad 12 between adjacent sections. This design can effectively buffer thermal expansion and contraction stress and improve heat dissipation.

[0035] See Figure 1 The hollow reactor with silicone umbrella skirt provided in the embodiments of this utility model has a main body that is a hollow cylindrical structure formed by epoxy resin casting. Its manufacturing process mainly includes the following steps: 1. Coil Winding and Segmentation: First, the inner cylinder 7 is horizontally clamped onto the winding machine. A segmented winding process is adopted: first, the coil 11 is wound at the planned upper segment position on the inner cylinder 7. After completing the upper segment winding, a ring-shaped silicone pad 12 is placed on its end; then, the coil 11 is wound at the middle segment position, and a silicone pad 12 is placed on it after completion; finally, the lower segment coil 11 is wound. This segmented structure can effectively buffer thermal stress and electrodynamic forces.

[0036] 2. Pre-assembly: After winding, the inner cylinder 7, containing the coil 11 and the internal silicone pad 12, is vertically placed on the base plate 1. The lead wires of the coil 11 are securely welded to the first terminal 9 and the second terminal 13, respectively. Then, the outer cylinder 3 is fitted over the coil 11. The top plate 4 is then aligned with the inner cylinder 7 and the outer cylinder 3, and initially secured to the base plate 1 through the first annular groove 14 and the second annular groove 15. The recessed part 8 is then pre-installed in the corresponding positions on the top plate 4 and the base plate 1 to form a complete mold cavity.

[0037] 3. Casting and Curing: The entire assembly is placed in a vacuum casting machine. The top plate 4 is removed, and vacuum casting is performed into the mold cavity formed by the inner cylinder 7, outer cylinder 3, and bottom plate 1. Epoxy resin mixture is filled in, and the top plate is finally tightened, pressing the embedded part 8 between the top plate 4 / bottom plate 1 and the epoxy casting body. This greatly enhances the bonding strength between the top plate 4 / bottom plate 1 and the epoxy casting body. After the epoxy resin mixture has completely cured, a tube 10 is formed, which firmly covers and bonds the coil 11, part of the inner cylinder 7, part of the outer cylinder 3, and all the internal silicone pads 12 into a single epoxy resin casting body.

[0038] 4. Post-processing and final assembly: After demolding, the cured reactor body is cleaned. Then, the protective cover 5 is installed onto the top plate using bolts 6.

[0039] 5. Bonding the umbrella skirts: Finally, on the outer surface of the outer cylinder 3, a high-strength, weather-resistant silicone adhesive is used to firmly bond the pre-formed silicone umbrella skirts 2 to the surface according to the design spacing, forming a multi-level anti-fouling flashover protection structure.

[0040] Thus, the hollow reactor with silicone umbrella skirt described in this utility model is manufactured. The reactor can operate by connecting the first terminal 9 and the second terminal 13 to the circuit.

[0041] This invention significantly improves insulation reliability, mechanical strength, and anti-pollution flashover capability in outdoor environments through integrated casting and multiple innovative structures.

Claims

1. A hollow reactor with a silicone umbrella skirt, comprising a tube body (10), characterized in that, A coil (11) is embedded inside the tube wall of the tube body (10). The two ends of the coil (11) are respectively connected to a first terminal (9) and a second terminal (13). The first terminal (9) is placed inside one end of the tube body (10) and penetrates the outer wall of the tube body (10). The second terminal (13) is placed inside the other end of the tube body (10) and penetrates the cross section of that end. Multiple raised silicone umbrella skirts (2) are fixed on the outer wall of the tube body (10). The multiple umbrella skirts (2) are evenly distributed along the circumference and axial direction of the outer wall of the tube body to form a multi-level umbrella skirt group.

2. The air-core reactor according to claim 1, characterized in that, The inner wall of the tube (10) is fitted with an inner cylinder (7), and a coil (11) is wound around the outer wall of the inner cylinder (7). An outer cylinder (3) is sleeved around the coil (11). A top plate (4) and a bottom plate (1) are fixed at both ends of the inner cylinder (7) and the outer cylinder (3), respectively. Both the top plate (4) and the bottom plate (1) are provided with through holes (16) that are compatible with the inner cylinder (7). The first terminal (9) penetrates the outer cylinder (3), the second terminal (13) penetrates the bottom plate (1), and the umbrella skirt (2) is fixed to the outer wall of the outer cylinder (3).

3. The air-core reactor according to claim 2, characterized in that, The inner cylinder (7), outer cylinder (3), top plate (4) and bottom plate (1) are all made of epoxy resin.

4. The air-core reactor according to claim 2, characterized in that, The top plate (4) and bottom plate (1) are respectively provided with a first annular groove (14) adapted to the inner cylinder (7) and / or the outer cylinder (3) on the side of the inner cylinder (7) and / or the outer cylinder (3). The two ends of the inner cylinder (7) are respectively placed in the first annular groove (14) of the top plate (4) and the bottom plate (1), and the two ends of the outer cylinder (3) are respectively placed in the second annular groove (15) of the top plate (4) and the bottom plate (1).

5. The air-core reactor according to claim 2, characterized in that, Both ends of the tube (10) are provided with multiple inserts (8). One part of the insert (8) is embedded inside the tube (10), and the other part is embedded inside the top plate (4) or the bottom plate (1).

6. The air-core reactor according to claim 2, characterized in that, A protective cover (5) is fixed above the top plate (4), and the protective cover (5) covers the through hole (16).

7. The air-core reactor according to claim 1, characterized in that, The coil (11) has a multi-segment structure, with a silicone pad (12) between adjacent segments.

8. The air-core reactor according to claim 1, characterized in that, The tube body (10) is made of epoxy resin.

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