Insulating sleeve with warning function for oil-immersed transformer

Abstract

The invention discloses an insulating sleeve with a warning function for an oil-immersed transformer, and belongs to the technical field of transformers. According to the scheme, when the temperature in the insulating sleeve is too high, gas in a protective film expands and finally bursts and is separated, the explosion sound can remind a worker to be preliminarily warned in time, meanwhile, a warning ball can fly up, the worker can be warned, the warning ball can enable the worker to know the direction in numerous transformers, the time for searching and excluding defective transformers is saved, and after the separation membrane is separated, the lower side part of the protective film makes contact with the upper end of the outer protruding edge, cooling oil in a liquid storage cavity flows into a cooling channel after a liquid blocking film is punctured, the temperature of overheated elements such as an insulating sleeve and a conducting rod in the insulating sleeve can be reduced, the temporary cooling effect is achieved, and more time is provided for follow-up treatment of workers.

Description

technical field [0001] The invention relates to the technical field of transformers, and more particularly, to an insulating bushing for oil-immersed transformers with a warning function. Background technique [0002] A substation is a place in the power system that converts voltage and current, receives and distributes electrical energy. The indispensable equipment in the substation is the transformer. The transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. Its main function is to perform voltage transformation, current transformation, impedance transformation, isolation, voltage regulation, etc. common one. [0003] The insulating bushing in the oil-immersed transformer connects the important electrical components of the transformer and the external energy system. The lead wire of the transformer winding must pass through the insulating bushing and be connected to the outside world. Therefore, it can be considered that t...

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Problems solved by technology

[0006] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide an insulating bushing for oil-immersed transformers with a vigilant effect. In this solution, when the temperature inside the insulating bushing is too high, the protective film of the insulating bushing will The internal gas heats up and expands, which will eventually cause the protective film to burst and separate from the separation film. At this time, the sound of bursting in the protective film will first remind the staff to carry out preliminary and timely high-temperature alerts. At the same time, the alert ball inside the protective film It will float up, which can not only further alert the staff and reduce the possibility of danger, but also enable the staff to know the location of the problematic transformer among the many transformers in time through the alert ball, saving work. The time for personnel to find and eliminate the problem transformer greatly shortens the processing time for the accident transformer, and after the separation film is separated, the lower part of the protective film will touch the upper end of the outer convex edge of the insulating sleeve, and the upper tip of the outer convex edge The thorns will pierce the liquid blocking film at the bottom of the protective film, and the cooling oil in the liquid storage chamber will flow out into the inlet channel, and finally into the cooling channel, so that the overheated components such as the insulating sleeve and the internal conductive rod can be controlled. Cooling can achieve a temporary cooling effect, so as to prolong the dangerous time caused by excessive temperature, provide more time for subsequent staff to deal with, and further improve safety

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