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Shielding case and voltage transformer using the shielding case

A technology of voltage transformer and shielding cover, applied in the field of shielding cover, can solve the problem that the insulation connection end cannot be connected stably, and achieve the effects of convenient connection, improved assembly efficiency, and uniform electric field distribution

Active Publication Date: 2020-10-27
HENAN PINGGAO ELECTRIC +2
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a shielding case to solve the problem that the insulating connection ends of the two arc-shaped tubes of the shielding case cannot be stably connected; the purpose of the present invention is also to provide a voltage transformer using the shielding case to Realize the stable fixing of the shielding cover on the outer side of the primary winding of the voltage transformer, thereby improving the performance of the voltage transformer

Method used

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  • Shielding case and voltage transformer using the shielding case
  • Shielding case and voltage transformer using the shielding case
  • Shielding case and voltage transformer using the shielding case

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Embodiment Construction

[0057] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0058] A specific embodiment of the shielding case of the present invention, the shielding case in this embodiment is used in sulfur hexafluoride gas-insulated single-phase voltage transformer products, such as Figure 1 to Figure 4 As shown, the shielding cover is a two-petal type, including two relatively synthetic ring-shaped arc-shaped tubes, which are respectively the first arc-shaped tube 1 and the second arc-shaped tube 2, the first arc-shaped tube 1, and the second arc-shaped tube The arc-shaped pipe 2 includes an inner peripheral wall, an outer peripheral wall and two intermediate arc-shaped walls, wherein the outer peripheral wall and the inner peripheral wall are coaxially arranged and the outer peripheral wall is arranged on the radially outer side of the inner peripheral wall, and the two intermediate arc-shaped walls The walls are respectiv...

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Abstract

The invention relates to a shielding case and a voltage transformer using the same. The shielding case comprises two arc-shaped pipes which are oppositely combined into a ring shape and used for beingfixed to an outer side of a primary winding of the voltage transformer in an embracing mode, wherein plugs are respectively fixed at two ends of the two arc-shaped pipes, an insulating plate is arranged at one folding position between the two arc-shaped pipes and is fixedly connected with the two arc-shaped pipes through metal bolts; at the folding position, a through hole matched with the metalbolt is formed in the plug of one of the two arc-shaped pipes, a threaded hole matched with the metal bolt is formed in the plug of the other arc-shaped pipe, and an insulating part is arranged between the plug provided with the through hole and the metal bolt, an operation hole used for tightening the metal bolt is formed on an outer circumferential wall of an end, close to the insulating plate,of the arc-shaped pipe where the plug provided with the through hole is located, and the metal bolt serves as a main stress component, so connecting stability of insulating connecting ends of the twoarc-shaped pipes is guaranteed.

Description

technical field [0001] The invention relates to a shielding case, and also relates to a voltage transformer using the shielding case. Background technique [0002] The primary winding of sulfur hexafluoride gas-insulated voltage transformer products needs to be equipped with a high-voltage shielding cover to shield the high-voltage electric field. At the same time, the starting end of the primary winding lead wire needs to be conductively connected to the center conductor of the pot insulator through the high-voltage shielding cover. And connected to the primary end of the line through the center conductor. [0003] In order to meet the structural requirements of voltage transformers and improve assembly efficiency, a utility model patent with the authorized announcement number of CN201601013U and the authorized announcement date of 2010.10.06 discloses a shielding cover, which is composed of two circular arcs that form a ring structure It is composed of two arc-shaped tubu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/36H01F27/28H01F38/26
CPCH01F27/2885H01F27/36H01F38/26
Inventor 陈奕嘉李四新连玺岳天松张润杰贺小维岳光华田超群赵新科王凯
Owner HENAN PINGGAO ELECTRIC
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