Insulation detection device for tank-type GIS vacuum arc-extinguishing chamber

Abstract

The utility model relates to the technical field of vacuum arc-extinguishing chamber detection, in particular to an insulation detection device for a tank-type GIS vacuum arc-extinguishing chamber. Comprising a first three-way shell and a second three-way shell, end covers are arranged at one ends of the first three-way shell and the second three-way shell, the other ends of the first three-way shell and the second three-way shell are connected with the two sides of a connecting cylinder respectively, a first disc insulator is arranged at a branch opening of the first three-way shell, and a second disc insulator is arranged at a branch opening of the second three-way shell. The first disc insulator is provided with a first contact base on the inner side of the first three-way shell, a contact base is installed on one side of the first contact base, a screw sequentially penetrates through the contact base and the first contact base to be connected with the movable end of the vacuum arc-extinguishing chamber, a nut is arranged on one side of the contact base to be screwed with the screw, and the second disc insulator is provided with a second contact base on the inner side of the second three-way shell. And the contact seat II is fixedly connected with the static end of the vacuum arc-extinguishing chamber through a bolt. Compared with the prior art, the vacuum arc-extinguishing chamber is convenient for insulation and voltage resistance test, and the reliability of the vacuum arc-extinguishing chamber is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum interrupter detection, in particular to an insulation detection device for a tank-type GIS vacuum interrupter. Background Art

[0002] Factory testing of vacuum interrupters is typically conducted in an oil-immersed environment, significantly different from the tank-type gas environment of GIS. Consequently, the insulation performance of assembled tank-type GIS vacuum interrupters is often reduced. Therefore, an insulation testing device is needed that can simulate the operating conditions of tank-type GIS insulating gas to improve the accuracy of insulation data for vacuum interrupters under actual operating conditions. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the utility model provides an insulation detection device for a tank-type GIS vacuum interrupter.

[0004] To achieve the above-mentioned purpose, an insulation detection device for a tank-type GIS vacuum interrupter is designed, comprising a three-way shell one and a three-way shell two, wherein one end of the three-way shell one and the three-way shell two is provided with an end cover, and the other end is respectively connected to the two sides of the connecting tube, a disc insulator one is provided at the branch port of the three-way shell one, and a disc insulator two is provided at the branch port of the three-way shell two, a contact seat one is installed on the inner side of the three-way shell one of the disc insulator one, a contact seat is installed on one side of the contact seat one, a screw passes through the contact seat and the contact seat one in sequence and is connected to the moving end of the vacuum interrupter, a nut is provided on one side of the contact seat to be screwed with the screw, a contact seat two is installed on the inner side of the three-way shell two of the disc insulator two, and the contact seat two is fixedly connected to the static end of the vacuum interrupter by bolts.

[0005] A shielding conductor is inserted into the contact seat.

[0006] A gasket 1 is provided between the nut and the contact seat.

[0007] A second gasket is provided between the bolt and the second contact seat.

[0008] The end cover is provided with a self-sealing valve.

[0009] Compared with the prior art, the utility model seals the tee shell by the end cover and the disc insulator, can fill the tee shell with different gases and set different air pressures, and can adjust the opening size of the vacuum interrupter by cooperating with the screw and the nut, which is convenient for insulation withstand voltage testing and increases the reliability of the vacuum interrupter. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a top view of the utility model.

[0011] Figure 2 It is a cross-sectional view of the present utility model.

[0012] Figure 3 It is an enlarged view of the connection structure between contact base 1 and the contact base.

[0013] Figure 4 This is an enlarged view of the connection structure between the second contact holder and the static end of the vacuum interrupter.

[0014] See also Figures 1-4 , among which, 1 is the connecting tube, 2 is the three-way shell one, 3 is the three-way shell two, 4 is the disc insulator one, 5 is the disc insulator two, 6 is the vacuum interrupter, 6-1 is the moving end, 6-2 is the static end, 7 is the contact seat one, 8 is the contact seat two, 9 is the contact seat, 10 is the shielding conductor, 11 is the screw, 12 is the nut, 13 is the bolt, 14 is the gasket one, 15 is the gasket two, 16 is the end cover, and 17 is the self-sealing valve. DETAILED DESCRIPTION

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] like Figures 1-4 As shown, one end of the three-way shell 1 2 and the three-way shell 2 3 is provided with an end cover 16, and the other end is respectively connected to the two sides of the connecting tube 1, a disc insulator 1 4 is provided at the branch port of the three-way shell 1, and a disc insulator 2 5 is provided at the branch port of the three-way shell 2. The disc insulator 1 4 is installed with a contact seat 1 7 on the inner side of the three-way shell 1 2, and a contact seat 9 is installed on one side of the contact seat 7. The screw 11 passes through the contact seat 9 and the contact seat 1 7 in sequence and is connected to the moving end 6-1 of the vacuum interrupter 6. A nut 12 is provided on one side of the contact seat 9 and is screwed with the screw 11. The disc insulator 2 5 is installed with a contact seat 2 8 on the inner side of the three-way shell 2 3, and the contact seat 2 8 is fixedly connected to the static end 6-2 of the vacuum interrupter 6 by a bolt 13. The structure in which the three-way housing 1 2 and the three-way housing 2 3 are connected to the connecting tube 1 is sealed by the end cover 16 and the disc insulator 1 4 and the disc insulator 2 5. Different gases at different pressures can be filled in the sealed space to simulate the actual working conditions of the tank-type GIS vacuum circuit breaker. The contact seat 1 7 and the contact seat 2 8 are respectively connected to the external voltage input and the grounding terminal through the disc insulator 1 4 and the disc insulator 2 5 for insulation withstand voltage testing. By turning the nut 12, the screw 11 pulls the moving end 6-1 of the vacuum interrupter 6 to move, so that the withstand voltage test of the vacuum interrupter 6 with different opening distances can be carried out. The rear side of the contact seat 9 is sleeved on the outer periphery of the rear part of the screw 11, which can shield the interference of the screw 11.

[0017] A shield conductor 10 is inserted into the contact seat 9. The shield conductor 10 is sleeved on the outer periphery of the tail of the screw 11 to reduce the interference of the screw 11 on the insulation detection.

[0018] A washer 14 is provided between the nut 12 and the contact seat 9. The washer 14 can prevent the nut 12 from directly rubbing against the contact seat 9, thereby preventing the contact seat 9 from wearing out.

[0019] A second gasket 15 is provided between the bolt 13 and the second contact base 8. The second gasket 15 can prevent the bolt 13 from directly rubbing against the second contact base 8, increase the contact area with the second contact base 8, and ensure a stable connection between the second contact base 8 and the vacuum interrupter 6.

[0020] The end cap 16 is provided with a self-sealing valve 17. The self-sealing valve 17 is provided to facilitate filling and discharging of different insulating gases.

[0021] When the present invention is used, from one end of the three-way shell 2, first screw the screw 11 into the bottom of the threaded hole of the moving end 6-1 of the vacuum interrupter 6. At this time, the length of the screw 11 exposed to the bottom of the contact seat 9 in the closed state of the vacuum interrupter 6 is measured, and then the nut 12 is screwed with an external hexagonal socket. The nut 12 supports the bottom of the contact seat 9 and pulls the moving end 6-1 of the vacuum interrupter 6 outward, thereby increasing the opening distance of the vacuum interrupter 6. At this time, the length of the screw 11 exposed to the bottom of the contact seat 9 is measured again. The increase compared with the previous measurement data is the opening distance of the vacuum interrupter 6. When adjusting the opening distance of the vacuum interrupter 6, a jig can be used to prevent the moving end 6-1 of the vacuum interrupter 6 from rotating. Specifically, two symmetrical flat positions can be set on the outside of the moving end 6-1, and then a wrench or other tool can be inserted into the flat positions to limit the rotation of the moving end 6-1. Since the screw 11 has been screwed to the bottom of the threaded hole of the moving end 6-1, the screw 11 will not rotate when the bolt 13 is tightened, making it easier for the bolt 13 to support the bottom of the contact seat 9 and pull the moving end 6-1 out through the screw 11 to adjust the opening distance. After adjusting the opening distance, insert the shielded conductor 10 into the contact seat 9 to reduce the interference of the screw 11 on the insulation test. Finally, cover the end cover 16, fill the gas through the self-sealing valve 17, and adjust the air pressure to perform insulation testing.

Claims

1. An insulation detection device for a tank-type GIS vacuum interrupter, characterized by: The invention comprises a three-way housing (2) and a three-way housing (3), one end of each of the three-way housing (2) and the three-way housing (3) is provided with an end cover (16), and the other end is respectively connected to both sides of the connecting tube (1), a disc insulator (4) is provided at the branch opening of the three-way housing (2), and a disc insulator (5) is provided at the branch opening of the three-way housing (3), and the disc insulator (4) is provided with a contact seat (7) on the inner side of the three-way housing (2), and the contact seat (7) is provided on the inner side of the three-way housing (2). A contact seat (9) is installed on one side of (7), and a screw (11) passes through the contact seat (9) and the contact seat 1 (7) in sequence to be connected to the moving end (6-1) of the vacuum interrupter (6). A nut (12) is provided on one side of the contact seat (9) to be screwed with the screw (11). The disc insulator 2 (5) is installed with a contact seat 2 (8) on the inner side of the three-way housing 2 (3). The contact seat 2 (8) is fixedly connected to the static end (6-2) of the vacuum interrupter (6) through a bolt (13).

2. The insulation detection device for a tank-type GIS vacuum interrupter according to claim 1, characterized in that: A shielding conductor (10) is inserted into the contact seat (9).

3. The insulation detection device for a tank-type GIS vacuum interrupter according to claim 1 is characterized in that: A gasket (14) is provided between the nut (12) and the contact seat (9).

4. The insulation detection device for a tank-type GIS vacuum interrupter according to claim 1 is characterized in that: A second gasket (15) is provided between the bolt (13) and the second contact seat (8).

5. The insulation detection device for a tank-type GIS vacuum interrupter according to claim 1, characterized in that: The end cover (16) is provided with a self-sealing valve (17).

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