Shielding type top expansion bus sealing gasket

Abstract

The utility model relates to the technical field of sealing gaskets, in particular to a shielding type top expansion bus sealing gasket which comprises a rubber top cover and a base plate connected with the bottom of the rubber top cover, an upper anti-slip ring is arranged on the top of the rubber top cover, the rubber top cover is in a circular truncated cone shape, a plurality of shielding rings are arranged on the outer wall of the rubber top cover, and a funnel groove is formed in the rubber top cover. A reinforcing ring is arranged in the funnel groove, a circular groove is formed in the lower surface of the base plate, and a plurality of lower anti-slip rings are arranged in the middle of the circular groove; according to the shielding type top expansion bus sealing gasket, through the combination cooperation of the rubber top cover and the base plate, the overall contact area is increased, the overall sealing performance is improved, the electromagnetic radiation invasion influence is shielded, and the influence that external dust particles and water drops enter the interior through the end of a cable and the rubber top cover is reduced; and under the action of the reinforcing ring with the reinforcing column, the toughness of the rubber top cover is improved, and the influence of collapse on overall continuous sealing use is reduced.

Description

Technical Field

[0001] This utility model relates to the field of sealing gasket technology, specifically a shielded top expansion busbar sealing gasket. Background Technology

[0002] Shielded top expansion busbars are important equipment used in power systems. They have the functions of shielding electromagnetic radiation, preventing electric arc intrusion, and improving the reliability of power systems. The shielded top expansion busbar sealing gasket, as an important component of the shielded top expansion busbar, mainly functions to ensure full shielding and sealing at the busbar expansion interface to prevent interference and damage from the external environment.

[0003] The utility model with announcement number CN218377659U discloses a U-shaped common busbar sealing rubber gasket, including a sealing rubber gasket, a common busbar cover plate and a common busbar enclosure. The sealing rubber gasket adopts a U-shaped structure and is provided with a U-shaped groove. The end of the common busbar cover plate is inserted into the interior of the U-shaped groove. The sealing rubber gasket is provided with a fastening mechanism and a sealing end face. The sealing end face is in contact with the contact surface of the common busbar enclosure.

[0004] The above technical solution uses an interlocking connection instead of adhesive tape, which can be completely removed by simply taking it off during replacement, reducing the difficulty of replacement and improving the efficiency of replacement; however, with long-term use, the cable end wears and consumes the gasket of the shielded top expansion busbar, reducing the sealing performance, and the overall insulation and sealing performance of the gasket are reduced, affecting the shielding of electromagnetic radiation and failing to reduce the impact of electric arc intrusion. Utility Model Content

[0005] The purpose of this invention is to provide a shielded top expansion busbar sealing gasket to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A shielded top-expanded busbar sealing gasket includes a rubber top cover and a pad connected to the bottom of the rubber top cover. The top of the rubber top cover is provided with an upper anti-slip ring. The rubber top cover is shaped like a frustum and has several shielding rings on its outer wall. A funnel groove is opened inside the rubber top cover, and a reinforcing ring is provided in the funnel groove. A circular groove is opened on the lower surface of the pad, and several lower anti-slip rings are provided in the middle of the circular groove.

[0008] The rubber top cover and pad are both made of silicone rubber.

[0009] Furthermore, the outer diameter of the top of the rubber cover is adapted to the outer diameter of the pad, the pad and the rubber cover are integrally formed, and the upper anti-slip ring is fused and fixed to the rubber cover.

[0010] In this invention, the rubber top cover is frustum-shaped, which increases the contact area, and with the cooperation of the bottom pad, it reduces the impact of arc penetration when the bottom is close to the cable.

[0011] Specifically, a limiting groove is formed on the outer wall of the pad, and the limiting groove has a U-shaped cross-section.

[0012] In this invention, the limiting groove helps the corresponding retaining ring to engage, increasing the stability of the pad installed in the connector and reducing the impact of detachment during use on the continuous protection of the sealing fit.

[0013] It should be noted that the centers of the lower anti-slip rings are in the same position, and the lower anti-slip rings decrease in size at equal intervals from the outside to the inside. The lower anti-slip rings are fused and fixed to the pad.

[0014] In this invention, the cooperation of multiple lower anti-slip rings increases the friction at the bottom of the pad, thereby reducing the likelihood of the pad detaching from the connector after installation and affecting the sealing and anti-interference of the cable.

[0015] Furthermore, the shielding rings are evenly spaced from bottom to top, and the shielding rings are bonded and fixed to the adhesive top cover. Each shielding ring has a steel wire ring at its center.

[0016] In this invention, multiple shielding rings are combined with steel wire rings to increase the stability of the shielding rings supported by the rubber top cover, while reducing the impact of electromagnetic radiation intrusion.

[0017] Specifically, the width of the inner wall of the funnel groove is adapted to the width of the outer wall of the reinforcing ring, and the reinforcing ring is in the shape of an inverted funnel.

[0018] In this invention, the reinforcing ring and the funnel groove are interlocked to increase the toughness of the rubber top cover and reduce the impact of the rubber top cover collapsing on the sealing performance.

[0019] In addition, the outer wall of the reinforcing ring is provided with several reinforcing columns, and the inner wall of the funnel groove is provided with cylindrical grooves corresponding to the reinforcing columns. The width of the inner wall of the cylindrical groove is adapted to the width of the outer wall of the reinforcing column.

[0020] In this invention, the cooperation of multiple reinforcing columns further increases the stability of the reinforcing ring support, thereby increasing the stability of the rubber top cover support, reducing external compression deformation, and improving overall sealing performance.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. This utility model increases the overall contact area by combining a rubber top cover and a pad, thereby increasing the overall sealing performance and shielding against electromagnetic radiation intrusion. It also reduces the impact of external dust particles and water droplets entering the interior through the cable end and the rubber top cover. Furthermore, the shielding ring with a steel wire ring enhances the overall shielding against electromagnetic radiation, and the reinforcing ring with a reinforcing column increases the toughness of the rubber top cover, reducing the impact of collapse on the overall continuous sealing performance.

[0023] 2. This utility model increases the wear resistance of both ends and increases the friction by setting an upper anti-slip ring and multiple lower anti-slip rings, thereby reducing wear and tear and improving sealing. With the cooperation of multiple shielding rings, the continuous intrusion of electric arc is reduced. The limiting groove on the pad helps the external retaining ring to fit together, increasing the stability of the pad installation and reducing the impact of separation on the sealing of the connection during use. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a bottom view of the overall design of this utility model;

[0026] Figure 3 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0027] Figure 4 This is a schematic diagram of the overall cross-sectional structure of the reinforcing ring of this utility model;

[0028] Figure 5 This is a schematic diagram of the reinforcing ring frame structure of this utility model.

[0029] The meanings of the labels in the diagram are as follows:

[0030] 1. Rubber top cover; 10. Funnel groove; 100. Cylindrical groove; 11. Upper anti-slip ring;

[0031] 2. Pad; 20. Circular groove; 200. Lower anti-slip ring; 21. Limiting groove;

[0032] 3. Shielding ring; 30. Steel wire ring;

[0033] 4. Reinforcing ring; 40. Reinforcing column. Detailed Implementation

[0034] 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.

[0035] Please see Figures 1-5 This embodiment provides a technical solution:

[0036] A shielded top expansion busbar sealing gasket includes a rubber top cover 1 and a pad 2 connected to the bottom of the rubber top cover 1, wherein both the rubber top cover 1 and the pad 2 are made of silicone rubber.

[0037] Furthermore, the top of the rubber cover 1 is provided with an upper anti-slip ring 11. The outer diameter of the top of the rubber cover 1 is adapted to the outer diameter of the pad 2. The pad 2 and the rubber cover 1 are integrally formed. The upper anti-slip ring 11 is fused and fixed to the rubber cover 1.

[0038] In this invention, the rubber top cover 1 is frustum-shaped, which increases the contact area, and with the cooperation of the bottom pad 2, it reduces the impact of arc penetration when the bottom is close to the cable.

[0039] Specifically, a limiting groove 21 is provided on the outer wall of the pad 2, and the limiting groove 21 has a U-shaped cross-section.

[0040] In this invention, the limiting groove 21 helps the corresponding retaining ring to engage, increases the stability of the pad 2 installed in the connector, and reduces the impact of detachment during use on the continuous protection of the sealing fit.

[0041] It should be noted that the rubber top cover 1 is in the shape of a frustum, and a number of shielding rings 3 are provided on the outer wall of the rubber top cover 1. The shielding rings 3 are distributed at equal intervals from bottom to top, and the shielding rings 3 are bonded and fixed to the rubber top cover 1. A steel wire ring 30 is provided at the center of the inner part of each shielding ring 3.

[0042] In this invention, multiple shielding rings 3 are combined with steel wire rings 30 to increase the stability of the shielding rings 3 supported by the rubber top cover 1, while reducing the impact of electromagnetic radiation intrusion.

[0043] Furthermore, the inside of the rubber top cover 1 is provided with a funnel groove 10, and a reinforcing ring 4 is provided in the funnel groove 10. The width of the inner wall of the funnel groove 10 is adapted to the width of the outer wall of the reinforcing ring 4, and the reinforcing ring 4 is in the shape of an inverted funnel.

[0044] In this invention, the reinforcing ring 4 and the funnel groove 10 are inserted into each other to increase the toughness of the rubber top cover 1 and reduce the impact of the rubber top cover 1 collapsing on the sealing performance.

[0045] It is worth adding that the outer wall of the reinforcing ring 4 is provided with several reinforcing columns 40, and the inner wall of the funnel groove 10 is provided with cylindrical grooves 100 corresponding to the reinforcing columns 40. The width of the inner wall of the cylindrical groove 100 is adapted to the width of the outer wall of the reinforcing column 40.

[0046] In this invention, the cooperation of multiple reinforcing columns 40 further increases the support stability of the reinforcing ring 4, thereby increasing the support stability of the rubber top cover 1, reducing external compression deformation, and improving the overall sealing performance.

[0047] Secondly, a circular groove 20 is provided on the lower surface of the pad 2, and several lower anti-slip rings 200 are provided in the middle of the circular groove 20.

[0048] Furthermore, the lower anti-slip rings 200 are centered at the same position, and the lower anti-slip rings 200 decrease in size from the outside to the inside at equal intervals. The lower anti-slip rings 200 are fused and fixed to the pad plate 2.

[0049] In this invention, the cooperation of multiple lower anti-slip rings 200 increases the friction at the bottom of the pad 2, thereby reducing the impact of the pad 2 detaching from the connector after installation on the sealing and anti-interference of the cable.

[0050] In this embodiment, when the shielded top expansion busbar sealing gasket is used, the shielding ring 3 with steel wire ring 30 is first connected to the outer wall of the corresponding rubber top cover 1, and the shielding ring 3 is distributed at equal intervals from bottom to top, and the inner diameter is gradually reduced. Then, the reinforcing ring 4 with reinforcing column 40 is installed in the funnel groove 10, and the reinforcing column 40 is inserted into the cylindrical groove 100. The upper anti-slip ring 11 is fixed to the rubber top cover 1, and multiple lower anti-slip rings 200 are sequentially installed in the circular groove 20.

[0051] When a seal is required, a retaining ring is fitted into the limiting groove 21 on the outer wall of the pad 2 and inserted into the connecting piece. The retaining ring limits the position of the pad 2, and with the cooperation of multiple lower anti-slip rings 200, the wear resistance of the bottom is increased, and the friction is increased. The connecting piece for the external cable installation contacts the upper anti-slip ring 11 on the rubber top cover 1, increasing the friction and reducing the impact of friction on the rubber top cover 1, thereby reducing the overall sealing stability. With the cooperation of the reinforcing column 40 and the reinforcing ring 4, the overall toughness is increased, the extrusion deformation is resisted, and the sealing stability is increased.

Claims

1. A shielded top-expanded busbar sealing gasket, comprising a rubber top cover (1) and a gasket (2) connected to the bottom of the rubber top cover (1), characterized in that: The top of the rubber cover (1) is provided with an upper anti-slip ring (11). The rubber cover (1) is in the shape of a frustum. Several shielding rings (3) are provided on the outer wall of the rubber cover (1). A funnel groove (10) is provided inside the rubber cover (1). A reinforcing ring (4) is provided in the funnel groove (10). A circular groove (20) is provided on the lower surface of the pad (2). Several lower anti-slip rings (200) are provided in the middle of the circular groove (20).

2. The shielded top-expanded busbar sealing gasket according to claim 1, characterized in that: The outer diameter of the top of the rubber top cover (1) is adapted to the outer diameter of the pad (2). The pad (2) and the rubber top cover (1) are integrally formed. The upper anti-slip ring (11) is fused and fixed to the rubber top cover (1).

3. The shielded top-expanded busbar sealing gasket according to claim 1, characterized in that: A limiting groove (21) is provided on the outer wall of the pad (2), and the limiting groove (21) has a U-shaped cross-section.

4. The shielded top-expanded busbar sealing gasket according to claim 1, characterized in that: The lower anti-slip rings (200) are centered at the same position, and the lower anti-slip rings (200) decrease in size from the outside to the inside at equal intervals. The lower anti-slip rings (200) are fused and fixed to the pad (2).

5. The shielded top-expanded busbar sealing gasket according to claim 1, characterized in that: The shielding rings (3) are evenly spaced from bottom to top, and the shielding rings (3) are bonded and fixed to the adhesive top cover (1). Each shielding ring (3) has a steel wire ring (30) at its center.

6. The shielded top-expanded busbar sealing gasket according to claim 1, characterized in that: The width of the inner wall of the funnel groove (10) is adapted to the width of the outer wall of the reinforcing ring (4), and the reinforcing ring (4) is in the shape of an inverted funnel.

7. The shielded top-expanded busbar sealing gasket according to claim 1, characterized in that: The outer wall of the reinforcing ring (4) is provided with a number of reinforcing columns (40), and the inner wall of the funnel groove (10) is provided with cylindrical grooves (100) corresponding to the reinforcing columns (40). The width of the inner wall of the cylindrical groove (100) is adapted to the width of the outer wall of the reinforcing column (40).

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