A special end screen down lead structure for transformer bushing monitoring

Abstract

The invention discloses an end screen downwards leading structure for monitoring a transformer sleeve. The end screen downwards leading structure comprises an end screen outer shell, an insulating baffle and an end screen guiding rod, and is characterized by further comprising a front end cover, a rear end cover, a leading-out and fixing device, a metal corrugated pipe soft connecting assembly, a pipe hard connecting part, a second metal corrugated pipe and a tail end. The front portion of the front end cover is connected with the end screen outer shell. The front portion of the rear end cover is connected with the rear portion of the front end cover in a threaded mode. The front end cover and the rear end cover are communicated to form an overall protection cavity. The leading-out and fixing device comprises a leading-out guiding rod, a line pressing nut and an insulating lining. A first blind hole is formed in the polished rod section on the front portion of the leading-out guiding rod. A spring is arranged inside the first blind hole. The end screen guiding rod is inserted in the first blind hole in an interstitial and connected mode and contacted with the spring. A second blind hole is formed in the threaded section on the rear portion of the leading-out guiding rod. Four through holes are formed in the second blind hole in the radial direction. The line pressing nut is assembled on the threaded section. The insulating lining is assembled on the threaded section. The tail end is composed of a cylinder body and a real sealing plate. The end screen downwards leading structure for monitoring the transformer sleeve can effectively protect led-out wires, guarantee that the end screen is good in grounding, reliable in insulating, good in sealing and durable, and ensure safe operation of the end screen.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to the lead-out structure of the transformer end screen. Background technique [0002] With the continuous development of the power grid and the continuous expansion of the scale of the power grid, it is imperative to implement the condition-based maintenance of power grid equipment. The correct collection of equipment status detection information is the basis of condition-based maintenance, which can evaluate equipment health status and fault development trends, reasonably reduce maintenance costs, improve maintenance efficiency, and ensure reliable operation of equipment. As one of the important components of the transformer, the transformer bushing is one of the extremely important equipment to ensure the safe operation of the power grid. It is particularly important to monitor its status in time. It is of great significance to timely discover potential safety hazards in the...

AI Technical Summary

Problems solved by technology

[0003] The transformer bushings that have been installed at present cannot meet the test conditions for state detection without power failure, and all need to be tested under power failure conditions

There are many shortcomings such as long detection period and test data cannot accurately reflect the actual situation

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