An on-load voltage regulating power transformer with oil conservator protection function

Abstract

The invention belongs to the technical field of electrical equipment, in particular to an on-load voltage regulating power transformer with an oil conservator protection function, comprising an oil conservator cylinder, a capsule mechanism is arranged in the inner cavity of the oil conservator cylinder, and the capsule mechanism It includes a first capsule, a second capsule and a third capsule, the third capsule is sleeved on the outside of the second capsule, the second capsule is sleeved on the outside of the first capsule, and the oil pillow An exhaust pipe is fixedly installed at the top center of the body; by setting the capsule mechanism to be composed of the first capsule, the second capsule and the third capsule, it is prevented that the insulating oil enters the capsule due to the rupture of the capsule and overflows at the respirator through the connecting pipe , since the third capsule and the second capsule are sealed and connected, only the first capsule and the second capsule communicate with the respirator, reducing the area where air enters the capsule mechanism through the respirator, and reducing the contact between insulating oil and air probability.

Description

technical field [0001] The invention belongs to the technical field of electrical equipment, and in particular relates to an on-load voltage regulating power transformer with an oil conservator protection function. Background technique [0002] Large transformers are key substation equipment in power transmission and transformation projects. When the volume of transformer oil expands or shrinks with the change of oil temperature, the oil conservator plays the role of oil storage and oil replenishment, which can ensure that the oil tank is full of oil. When the temperature rises, the oil in the fuel tank expands, and at this time too much oil will flow into the oil conservator. When the temperature drops, the oil in the oil conservator will flow into the fuel tank again, which will automatically adjust the oil level. [0003] At present, when the capsule in the transformer breaks, the insulating oil in the body directly contacts with the outside air and forms an oil flow chan...

AI Technical Summary

Problems solved by technology

[0003] At present, when the capsule in the transformer breaks, the insulating oil in the body directly contacts with the outside air and forms an oil flow channel. In the DC transmission system, when the load increases or the ambient temperature rises, the oil temperature and oil level in the body will decrease. It will rise rapidly and squeeze the capsule, causing the oil inside the oil pillow to flow out of the respirator along the oil flow channel, and form a siphon effect, which will cause a large amount of continuous oil leakage. When the oil leaks, the oil flow speed is too fast or continuous If it takes a long time, the heavy gas protection of the transformer body will start, causing the blockage of the DC transmission system, and seriously affecting the stable operation of the cross-regional power grid.

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