A side expansion type insulating member with high shielding property

Abstract

The utility model discloses a side expansion class insulation piece with strong shielding, relates to insulation piece technical field, including first side cover, one side detachable type installation of first side cover has second side cover, and the electrically conductive pole is jointly connected between first side cover and second side cover, and the side of first side cover towards second side cover direction is provided with two lugs, and the side of second side cover towards first side cover direction is provided with two insertion slot, and the opposite end edge of both sides of first side cover and second side cover is all provided with locking frame, and the top of first side cover and second side cover outer surface is all provided with a plurality of side expansion skirt edge. The utility model discloses through setting a series of structure, makes the equipment overhaul without needing integral replacement, only needs to loosen bolt to separate two side covers, simplifies the dismounting and assembling process, reduces maintenance time and cost, improves the overhaul speed, increases the creeping distance, optimizes the surface electric field distribution, effectively prevents the surface flashover under the humid, dirty etc.

Description

Technical Field

[0001] This utility model relates to the field of insulating components, specifically to a side-expanding insulating component with strong shielding properties. Background Technology

[0002] In power equipment, especially medium and high voltage switchgear, ring main units, gas-insulated switchgear and their interconnection systems, side-expanding insulation components play a crucial role. They not only need to provide reliable insulation to ground for the conductive rods, but also undertake multiple functions such as connection, support and shielding.

[0003] Most existing insulating components are molded by casting epoxy resin in one go, directly wrapping the conductive rod inside. This structure is not easy to disassemble. Once the internal conductive rod connection points become loose, the contact resistance increases and overheating occurs, or the surface of the insulating component needs to be replaced due to aging or breakdown, it is often necessary to shut down the power and replace the entire insulating component unit, and to destroy the external structure for disassembly. Maintenance is difficult and costly. In addition, most of them have simple structures and poor dustproof and moisture-proof performance. The intrusion of moisture or dust will significantly reduce the insulation strength and create safety hazards. Utility Model Content

[0004] The purpose of this invention is to provide a side-expanding insulating component with strong shielding properties to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a side-expanding insulating component with strong shielding, comprising a first side sleeve, a second side sleeve detachably mounted on one side of the first side sleeve, a conductive rod connecting the first side sleeve and the second side sleeve, two protrusions on the side of the first side sleeve facing the second side sleeve, two slots on the side of the second side sleeve facing the first side sleeve, locking frames at opposite edges on both sides of the first and second side sleeves, a plurality of side-expanding skirts on the top of the outer surfaces of the first and second side sleeves, and grooves on the outer surfaces of the first and second side sleeves between adjacent side-expanding skirts.

[0006] Preferably, the two locking frames on the same side have only cavities at their opposite ends. A spring is provided inside the cavity, and the spring matches the cavity. When the first side sleeve and the second side sleeve are installed, the spring is limited by the cavities of the two locking frames on the same side. The spring has high rigidity, which improves the tightness of the installation of the first side sleeve and the second side sleeve, provides stable, low-resistance electrical contact, and ensures shielding continuity.

[0007] Preferably, the top and bottom of the spring and the locking frame are both provided with through holes, and a bolt assembly is detachably installed at the through hole position. When the first side sleeve and the second side sleeve are closed, the through holes of the locking frame and the spring overlap. The bolt assembly contains a screw and a nut. The screw is passed through the through hole and locked at one end by the nut, which applies pressure to the locking frame, so that the first side sleeve and the second side sleeve are tightly connected and the gap is reduced.

[0008] Preferably, the inner walls of the opposite ends of the first and second side sleeves are provided with a junction shielding layer, and a conductive rod is connected to the surface of the junction shielding layer. This can effectively shield the charge accumulation and discharge caused by manufacturing burrs and air gaps in the junction area of ​​conductor, insulator and air, and significantly improve the level of partial discharge.

[0009] Preferably, the slot matches the protrusion, and a rubber pad is provided inside both of the grooves. When the protrusion is inserted into the slot, the protrusion applies pressure to the rubber pad, causing the rubber pad to deform and fill the gap, thereby reducing the gap between the first side sleeve and the second side sleeve and improving the shielding continuity.

[0010] Preferably, a rubber ring is connected at the bottom edge between the first side sleeve and the second side sleeve. The rubber ring reduces the gap between the first and second side sleeves and the conductive rod, thereby improving waterproofing.

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

[0012] 1. This highly shielded side-expanding insulating component is precisely positioned by the first and second side sleeves via protrusions and slots, and is secured by a locking mechanism consisting of a locking frame, spring, and bolt assembly. This eliminates the need for complete replacement during equipment maintenance; simply loosening the bolts allows for separation of the two side sleeves, simplifying the disassembly and assembly process, reducing maintenance time and costs, and increasing maintenance speed.

[0013] 2. This highly shielded side-expanding insulating component increases the creepage distance and optimizes the surface electric field distribution through multiple side-expanding skirts and grooves between them, effectively preventing surface flashover in harsh environments such as dampness and dirt. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall structure of this utility model in disassembled state;

[0016] Figure 3 This is a top view of the overall structure of this utility model in a disassembled state.

[0017] In the diagram: 1. First side sleeve; 2. Locking frame; 3. Second side sleeve; 4. Bolt assembly; 5. Conductive rod; 6. Side expansion skirt; 7. Intersection shielding layer; 8. Protrusion; 9. Rubber pad; 10. Spring; 11. Through hole; 12. Slot; 13. Groove; 14. Cavity; 15. Rubber ring. Detailed Implementation

[0018] 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.

[0019] 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., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] like Figures 1 to 3As shown, the side-expanding insulating component with strong shielding in this embodiment includes a first side sleeve 1. A second side sleeve 3 is detachably installed on one side of the first side sleeve 1. Both the first side sleeve 1 and the second side sleeve 3 are made of epoxy resin, providing basic insulation, preventing current leakage, and withstanding voltage. A conductive rod 5 is connected between the first side sleeve 1 and the second side sleeve 3. The conductive rod 5 is a conductor to ensure the current path. Two protrusions 8 are provided on the side of the first side sleeve 1 facing the second side sleeve 3, and two slots 12 are provided on the side of the second side sleeve 3 facing the first side sleeve 1. 12 matches the protrusion 8. When the first side sleeve 1 and the second side sleeve 3 are combined, the protrusion 8 is inserted into the slot 12, which improves the tightness of the connection between the first side sleeve 1 and the second side sleeve 3. Locking brackets 2 are provided at the opposite edges on both sides of the first side sleeve 1 and the second side sleeve 3. When the first side sleeve 1 and the second side sleeve 3 are combined, the opposite ends of the two locking brackets 2 on the same side contact each other and are fixed by the installation structure, so that the first side sleeve 1 and the second side sleeve 3 are fixed tightly. Several side expansion skirts 6 are provided on the top of the outer surface of the first side sleeve 1 and the second side sleeve 3. The surface of the side expansion skirts 6 is coated with RTV anti-flashover coating, which provides extra protection in humid and dirty environments and prevents the formation of conductive water film on the surface. The side expansion skirts 6 increase the creepage distance and prevent surface flashover. Grooves 13 are provided on the outer surface of the first side sleeve 1 and the second side sleeve 3 between two adjacent side expansion skirts 6. The grooves 13 improve the electric field distribution and are used in conjunction with the side expansion skirts 6 to further optimize the electric field.

[0021] Specifically, the two locking frames 2 on the same side are provided with cavities 14 at their opposite ends. A spring 10 is provided inside the cavity 14. The spring 10 matches the cavity 14. When the first side sleeve 1 and the second side sleeve 3 are installed, the spring 10 is limited by the cavity 14 of the two locking frames 2 on the same side. The spring 10 has high rigidity, which improves the tightness of the installation of the first side sleeve 1 and the second side sleeve 3, provides stable, low-resistance electrical contact, and ensures the continuity of shielding.

[0022] Furthermore, through holes 11 are provided at the top and bottom of the spring 10 and the locking frame 2. A bolt assembly 4 is detachably installed at the through hole 11. When the first side sleeve 1 and the second side sleeve 3 are closed, the through holes 11 of the locking frame 2 and the spring 10 coincide. The bolt assembly 4 contains a screw and a nut. The screw is passed through the through hole 11 and locked at one end by the nut, which applies pressure to the locking frame 2, so that the first side sleeve 1 and the second side sleeve 3 are tightly connected, reducing the gap.

[0023] Furthermore, the inner walls of the opposite ends of the first and second side sleeves 3 are provided with a junction shielding layer 7, and the surface of the junction shielding layer 7 is connected to the conductive rod 5, which can effectively shield the charge accumulation and discharge caused by manufacturing burrs and air gaps in the junction area of ​​conductor, insulator and air, and significantly improve the level of partial discharge.

[0024] Furthermore, the slot 12 matches the protrusion 8, and the interior of both grooves 13 is provided with rubber pads 9. When the protrusion 8 is inserted into the slot 12, the protrusion 8 applies pressure to the rubber pads 9, causing the rubber pads 9 to deform and fill the gap, reducing the gap between the first side sleeve 1 and the second side sleeve 3, and improving the shielding continuity.

[0025] Furthermore, a rubber ring 15 is connected to the bottom edge between the first side sleeve 1 and the second side sleeve 3. The rubber ring 15 reduces the gap between the first side sleeve 1 and the second side sleeve 3 and the conductive rod 5, thereby improving waterproofing.

[0026] The method of use in this embodiment is as follows: When assembling a side-expanding insulating component with strong shielding, place two rubber pads 9 into the two slots 12 respectively. First, put the rubber ring 15 on or place it in the predetermined installation position of the conductive rod 5. Align the protrusions 8 of the first side sleeve 1 and the second side sleeve 3 with the slots 12. Then close the two half-shells so that the conductive rod 5 is completely wrapped. The protrusions 8 apply pressure to the rubber pads 9, causing the rubber pads 9 to deform and fill the gaps, reducing the gap between the first side sleeve 1 and the second side sleeve 3, and improving the shielding continuity. During assembly, first insert the spring 10 into the cavities 14 of the two locking frames 2 on both sides from the side. Pass the screws of the bolt assembly 4 through the through holes 11 on the locking frame 2 and the spring 10, and then tighten the nuts to ensure uniform pressure, so that the two side sleeves are tightly connected and the gaps are minimized.

[0027] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A side-expanding insulating component with strong shielding properties, comprising a first side sleeve (1), characterized in that: A second side sleeve (3) is detachably installed on one side of the first side sleeve (1). A conductive rod (5) is connected between the first side sleeve (1) and the second side sleeve (3). Two protrusions (8) are provided on the side of the first side sleeve (1) facing the second side sleeve (3). Two slots (12) are opened on the side of the second side sleeve (3) facing the first side sleeve (1). Locking frames (2) are provided at the opposite edges of the two sides of the first side sleeve (1) and the second side sleeve (3). Several side skirts (6) are provided on the top of the outer surface of the first side sleeve (1) and the second side sleeve (3). Grooves (13) are provided on the outer surface of the first side sleeve (1) and the second side sleeve (3) between two adjacent side skirts (6).

2. The side-expanding insulating component with strong shielding as described in claim 1, characterized in that: The two locking frames (2) on the same side have only cavities (14) at their opposite ends, and springs (10) are provided inside the cavities (14).

3. The side-expanding insulating component with strong shielding as described in claim 2, characterized in that: The top and bottom of the spring (10) and the locking frame (2) are provided with through holes (11), and a bolt assembly (4) is detachably installed at the position of the through hole (11).

4. The side-expanding insulating component with strong shielding as described in claim 1, characterized in that: Both the inner walls of the first and second side sleeves (3) at opposite ends are provided with a boundary shielding layer (7).

5. The side-expanding insulating component with strong shielding as described in claim 1, characterized in that: The slot (12) matches the protrusion (8), and the interior of both grooves (13) is provided with rubber pads (9).

6. The side-expanding insulating component with strong shielding as described in claim 1, characterized in that: A rubber ring (15) is connected at the bottom edge between the first side sleeve (1) and the second side sleeve (3).

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