Extra-high voltage shielding ball

Abstract

The utility model discloses an extra-high voltage shielding ball, which relates to the technical field of shielding balls and comprises a placing frame, a sliding rail is arranged on the surface of the placing frame, a ball body is movably mounted on the surface of the sliding rail, a sliding block is welded in the ball body, and a splitting mechanism is arranged on the surface of the ball body. And portable mechanisms are fixedly mounted on the two sides of the placement frame. The first hemisphere and the first fixing frame are arranged to be matched with the second hemisphere and the second fixing frame, so that the whole ball body is kept stable, the ball body is conveniently disassembled by being matched with the connecting columns and the connecting holes, the surface and the interior of the ball body are coated with anti-corrosion coatings, the service life of the ball body is prolonged, and the service life of the ball body is prolonged. And a wire bunching groove is arranged to be matched with a portable disc and a limiting disc, so that a worker can conveniently transport the placement frame, the high-voltage shielding ball can be taken out at any time when working again, and the convenience of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shielding balls, in particular to a UHV shielding ball. Background Art

[0002] The valve hall of a converter station is an enclosed space for AC-DC conversion. The corona phenomenon is serious at the ends, slots, and corners of the busbars in the valve hall. The corona phenomenon will cause a series of adverse effects. Therefore, shielding balls are generally added at the ends and corners of the busbars to improve the anti-corona ability. The shielding ball can shield the fitting itself and the end of the insulator to avoid corona discharge.

[0003] Chinese Patent Publication No. CN112133507B discloses a shielding ball. The technical solution provided by this patent document is as follows: It includes a sphere, the sphere is a rotating body arranged by rotating around the central axis extending vertically, at least one end in the up-down direction of the sphere is provided with a through hole, the central axis of the through hole is collinear with the central axis of the sphere, and an arc-shaped flanging is provided at the edge of the through hole; in the vertical plane where the central axis of the sphere is located, the arc-shaped flanging has a flanging arc segment. The sphere includes an intermediate arc segment located in the center in the up-down direction, a transition segment located at the ends in the up-down direction, and a connecting segment connecting the intermediate arc segment and the transition segment. The connecting segment is tangent to and smoothly transitions with both the intermediate arc segment and the transition segment; the radius of curvature of the transition segment is greater than the radius of curvature of the flanging arc segment, and the flanging arc segment is located on the side facing the center of the sphere of the transition segment, and the flanging arc segment is tangent to and smoothly transitions with the transition segment.

[0004] The problem existing in the shielding ball of the prior art is that the tangency position B between the arc-shaped flanging and the sphere is above the lower end of the shielding ball. The lower end face of the shielding ball is a curved surface formed by the small arc of the arc-shaped flanging. The radius of curvature of the small arc is small, the electric field is concentrated, the electric field intensity is large, and it is easy to generate corona. The prior art uses the connecting segment in the sphere to connect with the flanging arc segment through the transition segment, and the transition segment is located at the ends of the upper and lower ends of the sphere, and the radius of curvature of the transition segment is greater than the radius of curvature of the flanging arc segment for processing. However, there will still be a situation where the inner part of the sphere cannot be coated with an anti-corrosion coating, which will further lead to the problem of reduced service life. Summary of the Utility Model

[0005] The purpose of the present utility model is to provide a UHV shielding ball to solve the problems raised in the above background art.

[0006] To solve the above technical problems, the technical solution adopted by the present utility model is:

[0007] A UHV shielding ball includes a placement rack, the surface of the placement rack is provided with a slide rail, a sphere is movably installed on the surface of the slide rail, and a slider is welded inside the sphere.

[0008] The surface of the sphere is provided with a splitting mechanism, and portable mechanisms are fixedly installed on both sides of the placement frame.

[0009] The splitting mechanism includes a first hemisphere, which is arranged on the left side of the sphere. A first fixing frame is fixedly installed on the surface of the first hemisphere, a connecting hole is opened on the surface of the first fixing frame, a handle is opened on the top surface of the first fixing frame, and a second hemisphere is arranged on one side of the first hemisphere.

[0010] A further improvement of the technical solution of the utility model is that a through hole is opened in the middle of the sphere, the slider is fixedly installed inside the through hole opened in the sphere, and the sphere is installed to the surface of the placement rack through the slider and the through hole, which is convenient for subsequent maintenance and replacement of the sphere.

[0011] A further improvement of the technical solution of the utility model is that a second fixing frame is fixedly installed on the surface of the second hemisphere, and a handle is also provided on the top surface of the second fixing frame. The handle cooperates with the first fixing frame and the second fixing frame to facilitate taking out and splitting of the sphere.

[0012] A further improvement of the technical solution of the utility model is that a connecting column is fixedly installed on the surface of the second fixing frame, the connecting column is adapted to the connecting hole, and the second fixing frame is connected to the first fixing frame through the connecting column and the connecting hole, thereby ensuring the stability of the overall structure.

[0013] A further improvement of the technical solution of the utility model is that the portable mechanism includes a limiting disc, which is threadedly connected to the two ends of the placement rack, and threaded columns are welded at both ends of the placement rack. The limiting disc is used to prevent the ball from detaching from the surface of the placement rack during transportation.

[0014] A further improvement of the technical solution of the utility model is that: a threaded hole is opened on the surface of the limiting disc, the threaded hole is adapted to the threaded columns welded at both ends of the placement rack, and the limiting disc is connected to the two ends of the placement rack through the threaded hole.

[0015] A further improvement of the technical solution of the utility model is that a cable tie groove is welded on the other side surface of the limiting disc, and a portable strap is sleeved inside the cable tie groove. The cable tie groove is used to sleeve the portable strap, and the portable strap is convenient for transporting the placement rack, which provides great convenience for the handling and movement of the placement rack.

[0016] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0017] 1. The utility model provides a UHV shielding ball. By setting the first hemispherical body and the first fixing frame in cooperation with the second hemispherical body and the second fixing frame, the whole sphere is kept stable. Then, in cooperation with the connecting column and the connecting hole, it is convenient to disassemble the sphere, and an anti-corrosion coating is applied to the surface and inside of the sphere, improving the service life of the sphere.

[0018] 2. The utility model provides a UHV shielding ball. By setting a wire slot in cooperation with a portable handle and a limiting disc, it is convenient for the staff to transport the placing rack, and the high-voltage shielding sphere can be taken out at any time during work, improving the convenience of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a front view structural schematic diagram of the utility model;

[0020] Figure 2 is a side view structural schematic diagram of the utility model;

[0021] Figure 3 is a cross-sectional view structural schematic diagram of the disassembly mechanism of the utility model;

[0022] Figure 4 is a partial structural schematic diagram of the portable mechanism of the utility model.

[0023] In the figure: 1. Placing rack; 11. Slide rail; 12. Sphere; 13. Slide block; 2. Disassembly mechanism; 21. First hemispherical body; 22. First fixing frame; 23. Connecting hole; 24. Handle; 25. Second hemispherical body; 26. Second fixing frame; 27. Connecting column; 3. Portable mechanism; 31. Limiting disc; 32. Threaded hole; 33. Wire slot; 34. Portable handle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following further describes the utility model in detail with reference to the embodiments:

[0025] Embodiment 1

[0026] As Figures 1-4As shown in the figure, this embodiment provides a UHV shielding sphere, including a placement rack 1. A slide rail 11 is provided on the surface of the placement rack 1. A sphere 12 is movably installed on the surface of the slide rail 11. A slider 13 is welded inside the sphere 12. A disassembly mechanism 2 is arranged on the surface of the sphere 12. Portable mechanisms 3 are fixedly installed on both sides of the placement rack 1. The disassembly mechanism 2 includes a first hemispherical body 21. The first hemispherical body 21 is arranged on the left side of the sphere 12. A first fixing frame 22 is fixedly installed on the surface of the first hemispherical body 21. A connection hole 23 is provided on the surface of the first fixing frame 22. A handle 24 is provided on the top surface of the first fixing frame 22. A second hemispherical body 25 is arranged on one side of the first hemispherical body 21. A through hole is provided in the middle of the sphere 12. The slider 13 is fixedly installed inside the through hole provided in the sphere 12. The sphere 12 is installed on the surface of the placement rack 1 through the slider 13 and the through hole. A second fixing frame 26 is fixedly installed on the surface of the second hemispherical body 25. A handle 24 is also provided on the top surface of the second fixing frame 26. The handle 24 cooperates with the first fixing frame 22 and the second fixing frame 26 to facilitate the removal and disassembly of the sphere 12. A connection column 27 is fixedly installed on the surface of the second fixing frame 26. The connection column 27 is adapted to the connection hole 23. The second fixing frame 26 is connected to the first fixing frame 22 through the connection column 27 and the connection hole 23. By setting the first hemispherical body 21 and the first fixing frame 22 to cooperate with the second hemispherical body 25 and the second fixing frame 26, the whole sphere 12 is kept stable. Then, with the cooperation of the connection column 27 and the connection hole 23, it is convenient to disassemble the sphere 12. An anti-corrosion coating is applied to the surface and inside of the sphere, which improves the service life of the sphere 12.

[0027] Embodiment 2

[0028] As Figures 1-4 shown, on the basis of Embodiment 1, the present utility model provides a technical solution: Preferably, the portable mechanism 3 includes a limit disc 31. The limit disc 31 is threadedly connected to both ends of the placement rack 1. Threaded columns are welded to both ends of the placement rack 1. The limit disc 31 is used to prevent the sphere 12 from detaching from the surface of the placement rack 1 during transportation. A threaded hole 32 is provided on the surface of the limit disc 31. The threaded hole 32 is adapted to the threaded columns welded to both ends of the placement rack 1. The limit disc 31 is connected to both ends of the placement rack 1 through the threaded hole 32. A wire groove 33 is welded to the other side surface of the limit disc 31. A portable belt 34 is sleeved inside the wire groove 33. The wire groove 33 is used to sleeve the portable belt 34. The portable belt 34 facilitates the transportation of the placement rack 1. By setting the wire groove 33 to cooperate with the portable belt 34 and the limit disc 31, it is convenient for the staff to transport the placement rack 1, and the high-voltage shielding sphere can be taken out at any time during work, improving the convenience of the device.

[0029] Next, the working principle of the UHV shielding sphere will be specifically described.

[0030] As Figures 1-4As shown in the figure, when using the device, through the cooperation of the cable slot 33, the portable carrier 34 and the limiting disc 31, it is convenient for the staff to transport the placement rack 1. When it works, the high-voltage shielding sphere can be taken out at any time, improving the convenience of the device. Through the cooperation of the first hemispherical body 21 and the first fixing frame 22 with the second hemispherical body 25 and the second fixing frame 26, the whole sphere 12 is kept stable. Then, with the cooperation of the connecting column 27 and the connecting hole 23, it is convenient to disassemble the sphere 12 and apply an anti-corrosion coating on the surface and inside of the sphere, improving the service life of the sphere 12.

[0031] The above text generally describes the present utility model in detail. However, based on the present utility model, some modifications or improvements can be made, which are obvious to those of ordinary skill in the technical field. Therefore, the modifications or improvements made without departing from the spirit of the present utility model are within the protection scope of the present utility model.

Claims

1. A UHV shielding ball, comprising a placement rack (1), characterized in that: The surface of the placement rack (1) is provided with a slide rail (11), a sphere (12) is movably mounted on the surface of the slide rail (11), and a slider (13) is welded inside the sphere (12); The surface of the sphere (12) is provided with a splitting mechanism (2), and portable mechanisms (3) are fixedly installed on both sides of the placement rack (1); The splitting mechanism (2) comprises a first hemisphere (21), the first hemisphere (21) is arranged on the left side of the sphere (12), a first fixing frame (22) is fixedly mounted on the surface of the first hemisphere (21), a connecting hole (23) is provided on the surface of the first fixing frame (22), a handle (24) is provided on the top surface of the first fixing frame (22), and a second hemisphere (25) is provided on one side of the first hemisphere (21).

2. The UHV shielding ball according to claim 1, characterized in that: A through hole is provided in the middle of the spherical body (12), and the sliding block (13) is fixedly mounted inside the through hole provided in the spherical body (12).

3. The UHV shielding ball according to claim 1, characterized in that: A second fixing frame (26) is fixedly mounted on the surface of the second hemispherical body (25), and a handle (24) is also provided on the top surface of the second fixing frame (26).

4. The UHV shielding ball according to claim 3, characterized in that: A connecting column (27) is fixedly mounted on the surface of the second fixing frame (26), and the connecting column (27) is adapted to the connecting hole (23).

5. The UHV shielding ball according to claim 1, characterized in that: The portable mechanism (3) comprises a limiting disc (31), wherein the limiting disc (31) is threadedly connected to two ends of the placement rack (1), and threaded columns are welded to the two ends of the placement rack (1).

6. The UHV shielding ball according to claim 5, characterized in that: A threaded hole (32) is provided on the surface of the limiting disc (31), and the threaded hole (32) is adapted to threaded columns welded at both ends of the placement rack (1).

7. The UHV shielding ball according to claim 5, characterized in that: A cable tie groove (33) is welded on the other side surface of the limiting disc (31), and a carrying strap (34) is sleeved inside the cable tie groove (33).

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