CN102543392A - Insulating ring - Google Patents

Abstract

The invention relates to an insulating ring for a lead of a transformer. The insulating ring is made of a superhard insulating cardboard or an electric laminated wood; and the lead is fixedly arranged at the position in a transformer sleeve to achieve the purpose of protecting the lead and the transformer.

Description

A kind of dead ring

Technical field

The present invention is that a kind of transformer is used dead ring, belongs to the power distribution equipment technical field.

Background technology

At present, in transformer was made, lead-in wire generally adopted crimped paper or the wrapping of little wadding, directly wears pipe then and draws.When transformer moved, because the effect of electromagnetic force, lead-in wire vibrated in sleeve pipe, and long-time and sleeve friction staves the insulating barrier of wrapping easily, and naked lead-in wire and sleeve pipe contact discharge cause transformer fault.

Summary of the invention

In order to overcome the shortcoming that the transformer high-voltage lead-in wire vibrates in sleeve pipe, the present invention provides a kind of dead ring, the position of stationary transformer lead-in wire in sleeve pipe.

The technical solution adopted for the present invention to solve the technical problems is: cover is with the insulation annulus of casing inner diameter size on transformer lead.Except center drilling, also be useful on the colligation anchor leg and be convenient to the hole that transformer oil flows on the annulus.When lead-in wire was worn dead ring and drawn through sleeve pipe, dead ring was in apart from the about 10mm of sleeve pipe lower edge place.

The invention has the beneficial effects as follows that the position of anchor leg in sleeve pipe prevents that lead-in wire receives electromagnetic vibratory dynamic friction sleeve pipe to damage insulation, and then avoid the discharge between naked lead-in wire and sleeve pipe.

Description of drawings

Fig. 1 is that the dead ring master looks sketch map;

Fig. 2 is the dead ring schematic top plan view;

Fig. 3 is the dead ring schematic side view.

Note among the figure: 1, dead ring; 2, fairlead; 3, lead-in wire colligation hole and transformer oil opening.

Embodiment

Fig. 1,2,3 is depicted as the dead ring structure chart.According to the size of casing inner diameter, choose the ultrahard insulating board or the electrical laminated wood of suitable thickness, tailor out cake (item 1).According to the outside dimension after the insulation of high-voltage connection bag, at cake center drilling (item 2).Do not influencing under the integrally-built prerequisite of this ring then, on annulus, opening some apertures (item 3).

Claims (2)

1. a dead ring is characterized in that: have some apertures on the annulus.

2. dead ring as claimed in claim 1 is characterized in that: the material of dead ring is insulating board and electrical laminated wood.

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