On-load tap-changer pressure relief valve dismounting device and method capable of avoiding oil drainage

Abstract

The invention belongs to the technical field of state maintenance of power transformation equipment, and particularly relates to an on-load tap-changer pressure relief valve dismounting device and method capable of avoiding oil drainage. An on-load tap-changer oil chamber upper cover connecting oil pipe is connected to the upper portion of an on-load tap-changer oil chamber, the other end of the on-load tap-changer oil chamber upper cover connecting oil pipe is connected with a valve, and the other end of the valve is connected with a pressure release valve. The device has the advantages of being simple in structure and convenient to operate; when the pressure relief valve needs to be disassembled, oil drainage of the on-load tap-changer oil chamber and an oil conservator can be effectively avoided, and meanwhile a large amount of waste of insulating oil and pollution caused by exposure of the on-load tap-changer oil chamber and accessories of the on-load tap-changer oil chamber in aircan be avoided; and during reinstallation, oil injection of the on-load tap-changer oil chamber and the oil conservator can be avoided, the working intensity of maintenance workers can be greatly reduced, and the working efficiency is remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of condition maintenance of electric substation equipment, and in particular relates to a dismantling device and method for a pressure release valve of an on-load tap changer that avoids oil discharge. Background technique [0002] The pressure release valve is an important protection device for the oil chamber of the on-load tap-changer. When the oil chamber of the on-load tap-changer is overheated, the insulating oil will be vaporized to produce gas. At this time, the pressure in the oil chamber of the on-load tap-changer increases sharply. The pressure relief valve can be opened in a short time; when the oil chamber pressure drops to the normal operating pressure range, the pressure relief valve will be closed to protect the on-load tap-changer oil chamber and its accessories from contact with air. [0003] The performance of the pressure relief valve is directly related to the safety of the on-load tap-c...

AI Technical Summary

Problems solved by technology

In this case, on the one hand, it will cause a lot of waste of insulating oil and the oil chamber of the on-load tap changer and its accessories will be exposed to the air and be polluted; The oil tank is filled with oil, which not only increases the workload of on-site maintenance personnel, but also reduces work efficiency

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