External oil type corrugated oil conservator pressure-balance valve

Abstract

The invention discloses an external oil type corrugated oil conservator pressure-balance valve which comprises an oil conservator. A seal plate is arranged in the oil conservator; a pair of corrugatedcore bodies is arranged on the left side surface of the seal plate; a connecting hole is formed in the center of the seal plate; a balance valve is in threaded connection onto the connecting hole andcomprises an upper valve body and a lower valve body matched with the upper valve body in a covering way; a cavity is formed after the upper valve body and the lower valve body are matched in the covering way; a reset spring connected with the upper valve body is arranged in the cavity; and a valve clack is connected to the other end of the reset spring and covers a through hole formed in the lower valve body. When a transformer is vacuumized and the vacuum degree reaches to a setting value of the balance valve, the balance valve starts to act so as to realize pressure balance, so that an effect on protecting the corrugated core bodies is achieved; and in addition, the balance valve only plays a role in protecting if the transformer is at the vacuum state and the pressure deviation between the inner side and the outer side of each corrugated core body is large, and the normal breathing actions of the corrugated core bodies of the oil conservator during commissioning are not influenced, so that the external oil type corrugated oil conservator pressure-balance valve is worth popularizing.

Description

technical field [0001] The invention relates to the technical field of corrugated core body protection of an external oil type corrugated oil storage tank, in particular to a pressure balance valve of an external oil type corrugated oil storage tank. Background technique [0002] The oil conservator is divided into two categories: open type and sealed type. The sealed type can be divided into rubber bladder or rubber diaphragm sealed type and metal corrugated sealed type; the metal corrugated oil conservator is a new generation of fully sealed oil conservator. The advanced stainless steel corrugated compensation technology, while realizing the volume compensation of insulating oil, can more reliably ensure the isolation of insulating oil and air, and has the characteristics of long working life, no aging, anti-damage and maintenance-free, and is completely suitable for all kinds of oil Power equipment such as immersed transformers, reactors and capacitors. At present, the e...

AI Technical Summary

Problems solved by technology

At present, the external oil-type corrugated oil conservator has been widely used in various types of oil-immersed transformers, capacitors and other electrical equipment. Although it has the advantages of good sealing and convenient installation, the corrugated core made of flexible stainless steel inside is a thin-walled and vulnerable part. Once damaged and cannot be maintained, the oil conservator can only be replaced as a whole

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