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High-strength non-discharge current transformer housing main tube

A current transformer, high-strength technology, applied in the direction of transformer/inductor casing, inductor, circuit, etc., can solve the problems of easy discharge and affecting the safety of use

Inactive Publication Date: 2018-06-15
JIANGSU HAIDA ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main defect of this kind of main tube is: the intersection of the main tube and the support tube is prone to stress concentration, and there is a sharp corner at the intersection of the main tube and the support tube, which is easy to produce discharge phenomenon, which affects the safety of use.

Method used

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  • High-strength non-discharge current transformer housing main tube
  • High-strength non-discharge current transformer housing main tube
  • High-strength non-discharge current transformer housing main tube

Examples

Experimental program
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Effect test

Embodiment Construction

[0013] Hereinafter, the present invention will be further explained based on the drawings and the embodiments.

[0014] The main cylinder of the high-strength non-discharge current transformer housing shown in the figure includes a cylinder body 2, a support cylinder 1. The support cylinder 1 is formed by an opening on the side wall of the cylinder body 2 and flanged outwards. The cylinder body 2 and the support cylinder 1 intersect At the arc transition connection.

[0015] The arc fillet at the intersection of the cylinder body 2 and the branch cylinder 1 is R≥1+1.5t (t is the wall thickness of the cylinder body 2), the flange height H ≤(Dt)(1-K) / 2+0.43R+0.72t (D is the outer diameter of the support cylinder 1 and K is the flanging coefficient). In this embodiment, the wall thickness t of the cylinder 2 is 8mm, the outer diameter D of the support cylinder 1 is 200 mm, the material is aluminum alloy, and the flanging coefficient K is 0.7, the arc fillet R at the intersection of t...

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Abstract

The invention discloses a high-strength non-discharge current transformer housing main tube. The main tube comprises a tube body and a secondary tube, the secondary tube is formed by outward flangingof a side wall opening of the tube body, and arch transition connection is adopted at the position where the tube body and the secondary tube joint; the main tube is further characterized in that an arch circular angle at the position where the tube body and the secondary tube joint is R>=1+1.5t (t is the thickness of the wall of the tube body), and flanging height is H<=(D-t)(1-K) / 2+0.43R+0.72t (D is the outer radius of the secondary tube and K is flanging coefficient). According to the main tube, the tube body and the secondary tube are of an integrated structure, structural strength is high, arch transition connection is adopted at the position where the tube body and the secondary tube joint, stress concentration is less, and electric discharge phenomena do not occur when the main tubeis used.

Description

Technical field [0001] The invention relates to the field of high-voltage substations, in particular to a main barrel of a current transformer housing. Background technique [0002] The current transformer housing includes a main cylinder, a flange, and a supporting cylinder assembly. The supporting cylinder assembly is welded and connected with the supporting cylinder on the side of the main cylinder, inserted and welded and fixedly connected in the inner hole of the side wall of the main cylinder. The main defect of this type of main cylinder is that stress concentration is easily generated at the intersection of the main cylinder and the supporting cylinder, and sharp corners at the intersection of the main cylinder and the supporting cylinder are prone to discharge, which affects the safety of use. Summary of the invention [0003] Aiming at the shortcomings of the prior art, the utility model proposes a high-strength non-discharge current transformer shell main barrel that ca...

Claims

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Application Information

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IPC IPC(8): H01F38/30H01F27/02
CPCH01F38/30H01F27/02
Inventor 田江
Owner JIANGSU HAIDA ELECTRIC
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