a shielding ball

A technology of shielding balls and spheres, which is applied in the direction of cable installation, overhead installation, electrical components, etc., can solve the problem of corona easily occurring in shielding balls, achieve the effect of enhancing the booster shielding effect, convenient processing and manufacturing, and avoiding corona

Active Publication Date: 2022-05-24
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a shielding ball to solve the technical problem that the corona phenomenon is prone to occur at the perforation of the shielding ball in the prior art

Method used

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Experimental program
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Effect test

specific Embodiment 1

[0033] like Figure 3 to Figure 6 As shown, the shielding ball includes a sphere 200, and the upper and lower ends of the sphere 200 are symmetrically arranged with two through holes 23 ( Figure 4 Only the perforation 23 at the lower end is shown in the figure), and arc flanges 24 are provided at the edges of the two perforations 23 to uniform the electric field, and the sphere 200 and the arc flanges 24 are smoothly connected.

[0034] like Figure 4 As shown, the sphere 200 includes an upper hemisphere 21 and a lower hemisphere 22. The upper and lower hemispheres are assembled to form the sphere 200. A connecting ring 25 is welded on the inner side of the lower hemisphere 22. The connecting ring 25 is welded against the inner wall of the lower hemisphere 22. A plurality of threaded holes are evenly distributed along the circumferential direction on the upper part, and after welding, each threaded hole is located on the horizontal plane where the center of the lower hemisph...

Embodiment 1

[0043] In Embodiment 1, a connecting ring is fixed on the lower hemisphere, and a countersunk hole is arranged on the upper hemisphere. In this embodiment, the connection ring is fixed on the upper hemisphere, and the countersunk hole is arranged on the lower hemisphere.

specific Embodiment 3

[0045] In Embodiment 1, the upper and lower hemispheres are detachably connected by screws. In this embodiment, after the upper and lower hemispheres are processed separately, they are fixed and connected together by welding.

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Abstract

The invention relates to a shielding ball. The shielding ball includes a sphere. The sphere is a revolving body arranged around a central axis extending up and down. At least one end of the sphere in the up and down direction is provided with a perforation. The central axis of the perforation is collinear with the central axis of the sphere. The edge of the perforated hole is provided with an arc-shaped flange; in the vertical plane where the central axis of the sphere is located, the arc-shaped flange has an arc segment of the flange, and the sphere includes an intermediate arc segment located at the center in the up and down direction, located at the upper and lower The transition section at the end of the direction, and the connection section connecting the middle arc section and the transition section, the connection section is tangent to the middle arc section and the transition section and transitions smoothly; the radius of curvature of the transition section is larger than the flanging arc The radius of curvature of the segment, and the flanging arc segment is located on the side of the transition segment facing the center of the sphere, and the flanging arc segment and the transition segment are tangentially and smoothly transitioned.

Description

technical field [0001] The present invention relates to a shielding ball. Background technique [0002] The valve hall of the converter station is a closed space for AC and DC conversion. The end of the busbar, the slot and the corner in the valve hall have serious corona phenomenon, and the corona phenomenon will cause a series of adverse effects. Shielding balls are added at the top and corners to improve the anti-corona ability. The shielding ball can shield the fitting itself and the end of the insulator to avoid corona. [0003] Existing shielding balls such as figure 1 and figure 2 As shown, the shielding ball includes a sphere 11 with the same diameter, and the lower end of the sphere 11 is provided with an insulator through hole 12 for the insulator to penetrate. The arc-shaped flange 13 folded upwards, in order to further improve the shielding performance of the shielding ball, has a smooth transition between the arc-shaped flange 13 and the spherical body 11 ....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B17/42H01B17/38H02G7/00
CPCH01B17/42H01B17/38H02G7/00
Inventor 王文豪赵重阳张炜付江浩高荣刚王晶赵建平张跃张力方张盼王旭辉牛雨欣
Owner STATE GRID CORP OF CHINA
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