Insulated busbar connection structure of high voltage switch cabinet

Abstract

The application provides an insulation bus connecting structure of a high-voltage switch cabinet, which comprises a connecting pipe inserted into an insulation sleeve, the inside of the insulation sleeve is provided with a limiting groove, the groove bottom of the limiting groove is provided with a positioning strip, the outside of the connecting pipe is provided with a limiting plate which is clamped with the limiting groove, the end of the limiting plate is provided with a positioning groove which is clamped with the positioning strip, and the insulation sleeve drives the connecting pipe to rotate into the conductive core of the insulation bus on both sides at the same time. In the application, the two adjacent insulation buses are inserted between the insulation sleeve and the connecting pipe from both sides, rotating the insulation sleeve can drive the connecting pipe to rotate synchronously, and the connecting pipe rotates into the conductive core of the insulation bus on both sides at the same time, thereby improving the convenience of operation.

Description

Technical Field

[0001] This application relates to the field of high-voltage switchgear technology, and in particular to an insulated busbar connection structure for high-voltage switchgear. Background Technology

[0002] When connecting insulated busbars in high-voltage switchgear, it is essential to ensure good conductivity at the connection point of the conductive core, good insulation of the connector, and sufficient mechanical strength at the connection. Currently, there are two main connection methods. One method involves inserting a connecting rod between the conductive cores of adjacent insulated busbars, relying on pressure for a tight fit, but this can loosen over time. The other method uses a conductive connecting tube connected to the outer diameter of the conductive core via threads. Both of these methods require stripping the insulation layer from the ends of the insulated busbars to expose the conductive cores before making the connection, which is time-consuming and labor-intensive. Utility Model Content

[0003] In view of this, the purpose of this application is to provide an insulated busbar connection structure for a high-voltage switchgear to improve ease of operation.

[0004] The technical solution of this application is as follows:

[0005] This application provides an insulated busbar connection structure for a high-voltage switchgear, including a connecting pipe inserted into the inside of an insulating sleeve. The inside of the insulating sleeve is provided with a limiting groove, and the bottom of the limiting groove is provided with a positioning strip. The outside of the connecting pipe is provided with a limiting plate that engages with the limiting groove. The end of the limiting plate is provided with a positioning groove that engages with the positioning strip. The insulating sleeve drives the connecting pipe to rotate into the conductive core of the insulating busbar on both sides simultaneously.

[0006] Using the technical solution of this application, two adjacent insulated busbars are inserted between the insulating sleeve and the connecting pipe from both sides. Rotating the insulating sleeve will drive the connecting pipe to rotate synchronously, and the connecting pipe will simultaneously rotate into the conductive core of the insulated busbars on both sides, which improves the convenience of operation.

[0007] In some implementations, the insulating sleeve has a baffle inside for the insertion of the connecting pipe.

[0008] In some implementations, the baffle is arranged perpendicular to the axis of the insulating sleeve.

[0009] In some implementations, the limiting groove is arranged around the periphery of the central hole of the baffle.

[0010] In some implementations, the central hole is arranged coaxially with the insulating sleeve.

[0011] In some implementations, the limiting grooves are evenly arranged around the circumference of the central hole.

[0012] In some implementations, the positioning strip is constructed as an arc shape arranged coaxially with the center hole.

[0013] In some implementations, the limiting plate is arranged radially along the connecting pipe.

[0014] In some implementations, the size of the limiting plate and the limiting groove are matched.

[0015] In some implementations, the positioning groove is constructed as an arc shape arranged coaxially with the connecting pipe. Attached Figure Description

[0016] Exemplary embodiments of this application will now be described in detail with reference to the accompanying drawings. It should be understood that the embodiments described below are for illustrative purposes only and are not intended to limit the scope of this application. In the accompanying drawings:

[0017] Figure 1 This is a cross-sectional view of the insulated busbar connection structure of a high-voltage switchgear according to an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the connecting pipe according to an embodiment of this application;

[0019] Figure 3 This is a schematic diagram of an insulating sleeve according to an embodiment of this application;

[0020] Figure label:

[0021] 10. Insulating sleeve; 11. Baffle; 12. Center hole; 13. Limiting groove; 14. Positioning strip;

[0022] 20. Connecting pipe; 21. Limiting plate; 22. Positioning groove;

[0023] 30. Insulated busbars. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description of this application is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining this application and are not intended to limit this application.

[0025] In related technologies, when connecting insulated busbars in high-voltage switchgear, it is necessary to ensure good conductivity at the connection point of the conductive core, good insulation of the connector, and mechanical strength of the connection. Currently, there are two main connection methods. One method involves inserting a connecting rod between the conductive cores of adjacent insulated busbars, relying on pressure for a tight fit, but this can loosen after prolonged use. The other method uses a conductive connecting tube connected to the outer diameter of the conductive core via threads. Both this method and the first method require stripping the insulation layer at the end of the insulated busbar to expose the conductive core before making the connection, which is time-consuming and labor-intensive.

[0026] In view of this, the purpose of this embodiment is to provide an insulated busbar connection structure for a high-voltage switchgear to improve ease of operation.

[0027] Please see Figures 1-3 In this embodiment, an insulating busbar connection structure of a high-voltage switchgear includes a connecting pipe 20 inserted into the inside of an insulating sleeve 10. The inside of the insulating sleeve 10 is provided with a limiting groove 13, and the bottom of the limiting groove 13 is provided with a positioning strip 14. The outside of the connecting pipe 20 is provided with a limiting plate 21 that engages with the limiting groove 13. The end of the limiting plate 21 is provided with a positioning groove 22 that engages with the positioning strip 14. The insulating sleeve 10 drives the connecting pipe 20 to rotate into the conductive core of the insulating busbar 30 on both sides at the same time.

[0028] Using the technical solution of this embodiment, two adjacent insulated busbars 30 are inserted between the insulating sleeve 10 and the connecting pipe 20 from both sides. Rotating the insulating sleeve 10 will drive the connecting pipe 20 to rotate synchronously, and the connecting pipe 20 will simultaneously rotate into the conductive core of the insulated busbars 30 on both sides, which improves the convenience of operation.

[0029] In this embodiment, the insulating sleeve 10 is constructed as a hollow cylindrical tube. The insulating sleeve 10 is made of insulating material, including but not limited to rubber. A disc-shaped baffle 11 is adhered to the inner wall of the insulating sleeve 10. The baffle 11 is also made of insulating material, including but not limited to rubber. The baffle 11 is arranged perpendicular to the axis of the insulating sleeve 10. A circular central hole 12 is opened at the axis of the baffle 11. The central hole 12 is arranged coaxially with the insulating sleeve 10. A limiting groove 13 is opened around the periphery of the central hole 12. The limiting groove 13 is constructed as a rectangular groove. Two limiting grooves 13 are evenly arranged along the circumference of the central hole 12. A positioning strip 14 is integrally formed at the bottom of the limiting groove 13. The positioning strip 14 is constructed as an arc arranged coaxially with the central hole 12. The positioning strip 14 is constructed as a minor arc along its cross-section.

[0030] In this embodiment, the connecting tube 20 is constructed as a hollow cylindrical tube. The connecting tube 20 is made of conductive material, including but not limited to copper. The outer wall of the connecting tube 20 is provided with external threads, and the inner wall of the conductive core of the insulating busbar 30 is provided with internal threads. The external threads on the connecting tube 20 are screwed into the internal threads inside the conductive core. An integrally formed limiting plate 21 is provided on the outside of the connecting tube 20. The limiting plate 21 is arranged radially along the connecting tube 20. The limiting plate 21 and the limiting groove 13 are arranged in a one-to-one correspondence, and the size of the limiting plate 21 and the limiting groove 13 are adapted. A positioning groove 22 is integrally formed at the end of the limiting plate 21. The positioning groove 22 is constructed as an arc arranged coaxially with the connecting tube 20. The positioning groove 22 is arc-shaped along the cross section. The positioning strip 14 is fitted into the positioning groove 22 with a suitable shape.

[0031] It should be noted that the connecting pipe 20 passes through the center hole 12 and is coaxially arranged with the insulating sleeve 10. The outer diameter of the connecting pipe 20 is equal to the diameter of the center hole 12. The limiting plate 21 is engaged inside the limiting groove 13 to perform circumferential limiting and prevent relative rotation between the connecting pipe 20 and the insulating sleeve 10. The connecting pipe 20 can rotate synchronously with the insulating sleeve 10. The positioning strip 14 is engaged inside the positioning groove 22 to perform axial limiting and prevent relative sliding between the connecting pipe 20 and the insulating sleeve 10 along the axial direction.

[0032] It should also be noted that the outer diameter of the insulating busbar 30 is equal to the inner diameter of the insulating sleeve 10. The insulating sleeve 30 is inserted into the space between the insulating sleeve 10 and the connecting pipe 20, and the connecting pipe 20 forms a threaded connection with the conductive core of the insulating busbar. When the connecting pipe 20 is rotated synchronously by the insulating sleeve 10, the insulating busbars 30 on both sides will move in opposite directions. That is, the connecting pipe 20 will continuously rotate into the insulating busbar 30 until the end faces of the two insulating busbars 30 abut against the left and right sides of the baffle 11, thus completing the connection.

[0033] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An insulated busbar connection structure for a high-voltage switchgear, characterized in that, The device includes a connecting pipe inserted into an insulating sleeve. The insulating sleeve has a limiting groove inside, and a positioning strip is provided at the bottom of the limiting groove. The connecting pipe has a limiting plate that engages with the limiting groove on the outside. The end of the limiting plate has a positioning groove that engages with the positioning strip. The insulating sleeve drives the connecting pipe to rotate into the conductive core of the insulating busbars on both sides simultaneously.

2. The insulated busbar connection structure of the high-voltage switchgear as described in claim 1, characterized in that, The insulating sleeve has a baffle inside for the connecting pipe to pass through.

3. The insulated busbar connection structure of the high-voltage switchgear as described in claim 2, characterized in that, The baffle is arranged perpendicular to the axis of the insulating sleeve.

4. The insulated busbar connection structure of the high-voltage switchgear as described in claim 3, characterized in that, The limiting groove is arranged around the periphery of the central hole of the baffle.

5. The insulated busbar connection structure of the high-voltage switchgear as described in claim 4, characterized in that, The central hole is arranged coaxially with the insulating sleeve.

6. The insulated busbar connection structure of the high-voltage switchgear as described in claim 5, characterized in that, The limiting grooves are evenly arranged around the circumference of the central hole.

7. The insulated busbar connection structure of the high-voltage switchgear as described in claim 6, characterized in that, The positioning strip is configured as an arc shape arranged coaxially with the center hole.

8. The insulated busbar connection structure of the high-voltage switchgear as described in claim 7, characterized in that, The limiting plate is arranged radially along the connecting pipe.

9. The insulated busbar connection structure of the high-voltage switchgear as described in claim 8, characterized in that, The limiting plate is adapted to the size of the limiting groove.

10. The insulated busbar connection structure of the high-voltage switchgear as described in claim 9, characterized in that, The positioning groove is configured as an arc shape arranged coaxially with the connecting pipe.

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