High-insulativity connector

Abstract

The high-insulativity connector comprises an upper shell plate, a lower shell plate, an insulating plate and a connecting busbar, wherein the insulating plate and the connecting busbar are arranged between the upper shell plate and the lower shell plate; the connecting busbar is arranged between the two insulating plates, and the connecting piece penetrates through the upper shell plate and the lower shell plate and then clamps the upper shell plate and the lower shell plate; the surface of the insulating plate is provided with a connecting convex block, the connecting busbar penetrates through the connecting convex block to abut against the insulating plate, the connecting convex block is provided with a connecting hole for the connecting piece to penetrate through, and the end face of the connecting convex block is provided with a concave insulating groove surrounding the periphery of the connecting hole. According to the utility model, through the arrangement of the connecting convex blocks and the insulating grooves, the double creepage distance is increased, and the inter-phase electrical distance is effectively increased.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of power transmission, especially relates to a high insulation connector. BACKGROUND

[0002] The connector is also known as a plug-in connector or a connector socket, which is an indispensable component in modern electrical systems, used to realize the electrical connection between two or more electrical devices, transmit current or signals. In the power transmission and distribution system, the connector is particularly used to connect the bus duct, to ensure the efficient transmission of current and the stable operation of the system. The main function of the bus duct connector is to realize the reliable connection between the bus ducts through mechanical connection and electrical contact, while providing necessary insulation performance and mechanical support.

[0003] In China, the design and manufacture of most bus duct connectors follow the GB / T7251.1 "Low-voltage switchgear and controlgear assemblies" standard. According to this standard, the internal creepage distance of a general connector is usually between 16-20mm, which can meet the use requirements in the conventional contaminated environment below AC 1000V.

[0004] However, in many special environments, such as coastal humid environments or specific overseas areas, the humidity in coastal areas is high, and the salt and moisture in the air can easily cause the insulation performance of electrical equipment to decrease. In such environments, the creepage distance of the connector needs to be significantly increased to prevent the occurrence of electric leakage and short circuit accidents. In some overseas areas, especially in tropical and subtropical climate conditions, electrical equipment often faces the challenges of high temperature, high humidity and high salt fog. These environmental conditions pose higher requirements on the insulation performance of the connector. For example, the use of bus duct products in these areas requires the electrical creepage distance of the connector to be more than 50mm, while the existing conventional connector can provide a creepage distance far from meeting these strict requirements. In the above special environments, electrical failure is easy to occur, and insufficient creepage distance will cause local degradation of the surface of the insulation material, forming a partial conductive path, thereby causing problems such as electric leakage and short circuit. SUMMARY

[0005] The utility model aims at providing a high insulation connector to solve the technical problem of insufficient creepage distance of the connector.

[0006] To achieve the above-mentioned purpose, the specific technical scheme of the high insulation connector of the utility model is as follows:

[0007] The utility model provides a high insulating connector, which comprises an upper shell plate and a lower shell plate, and an insulating plate and a connecting busbar arranged between the upper shell plate and the lower shell plate; the connecting busbar is arranged between the two insulating plates, and a connecting piece clamps the upper shell plate and the lower shell plate after passing through the upper shell plate and the lower shell plate; the insulating plate is provided with a connecting lug on the surface, the connecting busbar abuts against the insulating plate by passing through the connecting lug, the connecting lug is provided with a connecting hole for the connecting piece to pass through, and the end surface of the connecting lug is provided with an insulating groove which is recessed around the connecting hole.

[0008] As a further improvement of the utility model, the upper shell plate is provided with an anti-rotation pressing plate on the surface, the connecting piece comprises an insulating tube, a bolt and a nut, the insulating tube is wrapped outside the screw rod of the bolt, one end of the anti-rotation pressing plate is connected with the upper shell plate, and the other end is provided with an anti-rotation hole matched with the outer periphery of the nut, and the bolt is connected with the nut arranged in the anti-rotation hole from the lower shell plate.

[0009] As a further improvement of the utility model, the end surface of the insulating plate is larger than the connecting busbar, and a plurality of annular insulating grooves are arranged around the outer periphery of the connecting busbar.

[0010] As a further improvement of the utility model, the connecting busbar is provided with a connecting groove for the connecting lug to pass through, and a limiting block is arranged along the connecting groove and abuts against the connecting lug.

[0011] As a further improvement of the utility model, a pressure bowl pad is arranged between the nut cap of the bolt and the lower shell plate and between the nut and the upper shell plate, respectively.

[0012] As a further improvement of the utility model, the anti-rotation pressing plate is in a bent shape, one end of the anti-rotation hole is protruded relative to the upper shell plate, and the pressure bowl pad is arranged between the anti-rotation hole and the upper shell plate.

[0013] As a further improvement of the utility model, the upper shell plate and the lower shell plate are provided with stamping ribs on the surface for strengthening the structural strength.

[0014] As a further improvement of the utility model, the upper shell plate and the lower shell plate are provided with positioning bolts on the surface for indicating installation.

[0015] As a further improvement of the utility model, the connecting lug is rectangular, and the limiting block abuts on the edge of the rectangle.

[0016] Beneficial effects:

[0017] The connector has the insulating plate surface provided with the connecting protrusions, and the connecting protrusion end face is provided with the concave insulating grooves around the connecting hole.

[0018] The insulating grooves further increase the length of the insulating path, improve the weather resistance and corrosion resistance of the insulating material, and ensure the stability and reliability of the connector in long-term use.

[0019] The limiting blocks effectively prevent the movement of the connecting bus bars during installation and use, ensuring the stability and reliability of the electrical connection.

[0020] The anti-rotation pressing plate prevents the rotation of the other nut when tightening one nut, simplifies the installation process, and improves the installation precision and efficiency.

[0021] In summary, the high-insulation connector significantly improves the performance and reliability of the connector in special environments by increasing the creepage distance, enhancing the structural strength, simplifying the installation method, and selecting high-quality materials, meeting the use requirements in coastal humid environments and specific overseas areas. This high-insulation connector not only improves the safety and stability of the electrical system, but also simplifies the installation and maintenance process, reducing the construction cost. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a high-insulation connector structure schematic diagram of the utility model;

[0023] Figure 2 It is an explosion diagram of a high-insulation connector;

[0024] Figure 3 It is a sectional view of a high-insulation connector;

[0025] Figure 4 It is an insulating plate structure schematic diagram;

[0026] Figure 5 It is a connecting bus bar structure schematic diagram;

[0027] Marking in the figure: 100, upper shell plate; 110, anti-rotation pressing plate; 111, anti-rotation hole; 120, stamping rib; 130, positioning bolt; 200, lower shell plate; 300, insulating plate; 310, connecting protrusion; 311, connecting hole; 312, insulating groove; 320, insulating groove; 400, connecting bus bar; 410, connecting groove; 420, limiting block; 500, insulating tube; 600, connecting piece; 610, bolt; 620, nut; 700, pressure bowl pad. DETAILED DESCRIPTION

[0028] In order to deepen the understanding of the utility model, the utility model will be further described in combination with embodiments and drawings below, and the embodiments are only used to explain the utility model and do not constitute a limitation on the protection scope of the utility model.

[0029] Implementation example:

[0030] As Figures 1-3 shown, a high-insulation connector is used for the connection of bus ducts in the process of power transmission, and insulating plates 300 and connecting bus bars 400 are alternately arranged between upper shell plates 100 and lower shell plates 200. The insulating plates 300 ensure the insulation between adjacent connecting bus bars 400 and ensure the creepage distance in the connector. The upper and lower shell plates are made of steel material, and the structural strength is increased by 30% on the basis of the same plate thickness through the design of sheet metal stamping ribs. Meanwhile, positioning bolts 130 are arranged on the surfaces of the upper and lower shell plates, which play a visual indicating role during installation and positioning, and further improve the convenience of on-site installation.

[0031] The connecting piece 600 clamps and fixes the insulating plates 300 and the connecting bus bars 400 in the interior through the upper and lower shell plates. In the embodiment, the connecting piece is a combination of a bolt 610 and a nut 620 of an insulating pipe 500. The upper shell plate 100 is provided with an anti-rotation pressing plate 110, which is a bent structure, one end of which is fixed on the upper shell plate 100, and the other end is protruded relative to the upper shell plate 100. A pressure bowl pad 700 is arranged below the protrusion, and an anti-rotation hole 111 is arranged in the protruded end. The shape of the anti-rotation hole 111 matches the shape of the nut 620. The bolt 610 is connected with the nut 620 arranged in the anti-rotation hole 111 after entering through the interior of the connector from the lower shell plate 200. During installation of the connector, the worker only needs to tighten the bolt 610 on the lower shell plate 200, and the nut 620 on the other side will not rotate due to the effect of the anti-rotation pressing plate 110, effectively reducing the construction difficulty on site. The pressure bowl pad 700 is arranged below the nut 620, and the pressure is evenly distributed during the tightening process, reducing local stress concentration and prolonging the service life of the connector.

[0032] As Figure 4 shown, the insulating plate 300 is provided with a connecting lug 310, and the connecting lug 310 is provided with a connecting hole 311 for the bolt 610 to pass through. In the embodiment, the connecting lug 310 is rectangular, and a back-shaped insulating groove 312 is arranged on the upper end surface of the connecting lug 310 along the periphery of the connecting hole 311, which increases the double creepage distance and effectively improves the electrical distance between phases. Meanwhile, the insulating plate 300 has a larger surface area relative to the connecting bus bar 400, and a plurality of insulating grooves 320 are arranged along the periphery of the connecting bus bar 400, which further improves the electrical creepage distance.

[0033] As Figure 5As shown, the connecting female bus 400 is provided with a connecting slot 410 corresponding to the connecting lug 310, and the connecting female bus 400 is abutted with the insulating plate 300 by passing through the connecting lug 310. The connecting slot 410 and the connecting lug 310 are corresponding rectangles, and the limiting block 420 is provided along the edge of the connecting slot 410, and the connecting lug 310 is abutted with the limiting block 420 after passing through, preventing the connecting female bus 400 from rotating and moving in the installation process.

[0034] The connector of the utility model increases the creepage distance by setting the connecting lug 310 on the surface of the insulating plate 300 and setting the concave insulating slot 312 on the end face of the connecting lug 310. This makes the connector have better insulation performance in the high-voltage and high-humidity environment, effectively preventing the occurrence of the electric leakage and short circuit phenomenon. Especially in the coastal humid environment and specific overseas area, the design can meet the strict requirement that the electrical creepage distance reaches more than 50mm.

[0035] It can be understood that the utility model is described through some embodiments, and the person skilled in the art knows that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, the features and embodiments can be modified to adapt to specific conditions and materials under the guidance of the utility model without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all the embodiments falling within the scope of the claims of the application belong to the scope protected by the utility model.

Claims

1. A high insulation connector, characterized in that: It includes an upper shell plate and a lower shell plate, and an insulating plate and a connecting busbar arranged between the upper shell plate and the lower shell plate; The connecting busbar is arranged between the two insulating plates, and the connecting piece passes through the upper shell plate and the lower shell plate and then clamps the upper shell plate and the lower shell plate; The surface of the insulating plate is provided with a connecting protrusion, the connecting busbar passes through the connecting protrusion and abuts against the insulating plate, the connecting protrusion is provided with a connecting hole for the connecting member to pass through, and the end face of the connecting protrusion is provided with a concave insulating groove surrounding the outer periphery of the connecting hole.

2. The high-insulation connector according to claim 1, wherein: An anti-rotation pressure plate is provided on the surface of the upper shell plate, and the connecting part includes an insulating tube, a bolt and a nut. The insulating tube is wrapped around the outside of the screw rod of the bolt. One end of the anti-rotation pressure plate is connected to the upper shell plate, and the other end is provided with an anti-rotation hole matching the outer periphery of the nut. The bolt enters from the lower shell plate and is connected to the nut set in the anti-rotation hole.

3. The high-insulation connector according to claim 1, wherein: The end surface of the insulating plate is larger than the connecting busbar, and a plurality of surrounding insulating grooves are provided along the periphery of the connecting busbar.

4. The high-insulation connector according to claim 1, wherein: The connecting busbar is provided with a connecting groove for the connecting protrusion to pass through, and a limiting block is provided along the connecting groove, and the limiting block abuts against the connecting protrusion.

5. The high-insulation connector according to claim 2, wherein: Pressure bowl pads are respectively arranged between the nut of the bolt and the lower shell plate, and between the nut and the upper shell plate.

6. The high-insulation connector according to claim 5, characterized in that: The anti-rotation pressure plate is bent, and one end of the anti-rotation hole is protruded relative to the upper shell plate. The pressure bowl pad is provided between the anti-rotation hole and the upper shell plate.

7. The high-insulation connector according to claim 1, wherein: The surfaces of the upper shell plate and the lower shell plate are provided with stamping ribs for enhancing the structural strength.

8. The high-insulation connector according to claim 1, wherein: Positioning bolts are provided on the surfaces of the upper shell plate and the lower shell plate for indicating installation.

9. The high-insulation connector according to claim 4, wherein: The connecting protrusion is rectangular, and the limiting block abuts against the edge of the rectangle.

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