Damping structure for reducing vibration of transformer oil tank

Abstract

The invention relates to a damping structure for reducing vibration of a transformer oil tank. The damping structure comprises two metal perforated plates arranged in an oil saving box on a transformer and located on the front side and the rear side of an iron core respectively, wherein the two metal perforated plates are parallel to two wide surfaces, and gaps are reserved between the two metal perforated plates and the inner walls of the wide surfaces of the oil saving box. The upper edges and the lower edges of the metal perforated plates are respectively flush with an upper end ring and a lower end ring of the transformer, and the metal perforated plates cover the iron core in the length direction. By adopting the damping structure for reducing the vibration of the transformer oil tank, oil flow pulsation of the transformer is decreased, the pressure distribution on the inner wall of the oil saving box of the transformer is uniform, accordingly vibration and radiation noise of the oil saving box of the transformer are reduced, the cost is low, space is saved, and the heat dissipation problem is avoided.

Description

technical field [0001] The invention relates to a damping structure, in particular to a damping structure for reducing the vibration of a transformer oil tank. Background technique [0002] At present, the commonly used noise reduction measures for transformer oil tanks are to directly install sound-absorbing materials on the outer surface of the oil tank or use double-layer oil tank walls, and fill the interlayer with sound-absorbing materials such as rock wool, glass fiber, iron filings, and fine sand to form a semi-noise reduction. tank. Since the vibration frequency range of the oil-immersed transformer is wide, and the vibration in the range of 100Hz to 500Hz is dominant, the sound-absorbing cotton has a good effect at high frequencies. If you want to obtain the same effect at low frequencies, the thickness of the sound-absorbing cotton must be increased. It not only increases the cost and takes up space, but also causes heat dissipation problems, which affects the saf...

AI Technical Summary

Problems solved by technology

Since the vibration frequency range of the oil-immersed transformer is wide, and the vibration in the range of 100Hz to 500Hz is dominant, the sound-absorbing cotton has a good effect at high frequencies. If you want to obtain the same effect at low frequencies, the thickness of the sound-absorbing cotton must be increased. It not only increases the cost and takes up space, but also causes heat dissipation problems, which affects the safe operation of the transformer

The use of iron filings or fine sand will increase the weight of the oil tank, which is not conducive to the transportation and installation of the transformer

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