CN202632996U

CN202632996U - Sealed transformer porcelain bushing

Info

Publication number: CN202632996U
Application number: CN 201220167744
Authority: CN
Inventors: 陈传芝; 易军; 樊阳春; 付华国; 罗修雪; 何鹏
Original assignee: Hunan Huadian High Voltage Insulators & Electrical Apparatus Co Ltd
Current assignee: Hunan Huadian High Voltage Insulators & Electrical Apparatus Co Ltd
Priority date: 2012-04-19
Filing date: 2012-04-19
Publication date: 2012-12-26
Anticipated expiration: 2022-04-19

Abstract

The utility model relates to a sealed transformer porcelain bushing which comprises an upper porcelain bushing and a lower porcelain bushing which are arranged on a conducting rod and respectively located on the upper side and the lower side of a transformer case cover. A first sealing ring is arranged between the transformer case cover and the conducting rod. A circular groove is arranged on the lower end face of the upper porcelain bushing. A second sealing ring is arranged in the circular groove, and the second sealing ring abuts against the upper side face of the transformer case cover. The lower porcelain bushing extends upward to form a flange which passes through the first sealing ring. A third sealing ring is arranged between the lower porcelain bushing and the lower side face of the transformer case cover. According to the sealed transformer porcelain bushing, three sealing rings are adopted to seal, and all the three sealing rings are not exposed so that chemical substances are prevented from corroding the sealing rings, and therefore the sealed transformer porcelain bushing not only is good in sealing performance, but also improves adaptability of a transformer.

Description

A kind of sealed transformer insulator

Technical field

The utility model relates to the sealing of porcelain shell for transformer.

Background technology

At present,, not only influence electrical equipment outward appearance and physical life, and be prone to cause seal distortion and aging, influence the normal operation of electrical equipment, increase the operating cost cost because the sealing surface between porcelain shell for transformer and transformer case lid and the conducting rod all designs externally; And seal exposes, and makes common transformer can not adapt to highlands, extensive chemical erosion area etc. preferably, thereby has limited the use of transformer.

The utility model content

The utility model has solved above-mentioned technical problem, and a kind of good sealing performance porcelain shell for transformer is provided.

The technical scheme that the utility model solves the problems of the technologies described above employing is: a kind of sealed transformer insulator, comprise being installed in being positioned at the last insulator and following insulator that transformer tank covers downside on the conducting rod, and first sealing ring is installed between said case lid and the conducting rod; Annular groove has been opened in the said insulator lower surface of going up, and second sealing ring is installed in the annular groove, and this second sealing ring is resisted against the upper side of said case lid; Said insulator has down extended upward flange, and this flange passes said first sealing ring, between said insulator down and case lid downside, is provided with the 3rd sealing ring.

Can know that from above technical scheme the utility model seals through the three seals circle, and sealing ring do not expose all, can prevent chemical substance etc. to the sealing ring corrosion, not only sealing property is better, and has improved the adaptability of transformer.

Description of drawings

Fig. 1 is the structural representation of a kind of optimal way of the utility model.

Embodiment

Specify the utility model below in conjunction with accompanying drawing 1:

This porcelain shell for transformer comprises being installed in and is positioned at the last insulator 3 and following insulator 4 that transformer tank covers 2 upper and lower sides on the conducting rod 1, and first sealing ring 5 is installed between said case lid and the conducting rod; Annular groove 6 has been opened in the said insulator lower surface of going up, and second sealing ring 7 is installed in the annular groove, and this second sealing ring is resisted against the upper side of said case lid; Said insulator 4 has down extended upward flange 41, and this flange passes said first sealing ring, between said insulator down and case lid downside, is provided with the 3rd sealing ring 8.The utility model seals through the three seals circle, and sealing ring all do not expose, and can prevent chemical substance etc. to the sealing ring corrosion, and not only sealing property is better, and has improved the adaptability of transformer.

Above-mentioned execution mode only supplies to explain the usefulness of the utility model; And be not to be the restriction to the utility model; The those of ordinary skill in relevant technologies field; Under the situation that does not break away from the utility model spirit and scope, can also make various variations and modification, so all technical schemes that are equal to also should belong to the category of the utility model.

Claims

1. a sealed transformer insulator comprises being installed in being positioned at the last insulator and following insulator that transformer tank covers downside on the conducting rod, it is characterized in that: first sealing ring is installed between said case lid and the conducting rod; Annular groove has been opened in the said insulator lower surface of going up, and second sealing ring is installed in the annular groove, and this second sealing ring is resisted against the upper side of said case lid; Said insulator has down extended upward flange, and this flange passes said first sealing ring, between said insulator down and case lid downside, is provided with the 3rd sealing ring.