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Oil tank structure capable of effectively reducing transformer noise

A technology for power transformers and oil tanks, applied in transformer/inductor noise damping, transformer/inductor cooling, etc., can solve the problems of large-capacity power transformers with high noise, and achieve the effect of reducing noise, reducing noise, and low price

Inactive Publication Date: 2014-01-15
CHINT ELECTRIC
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  • Abstract
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Problems solved by technology

[0003] What the present invention aims to solve is the technical problem of high noise in existing large-capacity power transformers

Method used

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  • Oil tank structure capable of effectively reducing transformer noise

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Embodiment

[0011] Such as figure 1 As shown, it is a structural schematic diagram of an oil tank structure that effectively reduces transformer noise provided by the present invention. The oil tank wall is a double-layer structure, and the thickness of the inner wall 4 of the double-layer oil tank is 10 mm. On the outside of the inner wall 4 of the double-layer oil tank, a welding line is welded at an interval of 600 mm. U-shaped reinforcing ribs 2, and steel plates are welded between every two U-shaped reinforcing ribs 2 to form the outer wall 1 of the double-layer fuel tank. The inner wall 4 of the double-layer fuel tank, the U-shaped rib 2 and the steel plate are all made of Q345A to improve the overall rigidity and reduce its own vibration. The gap between the inner wall 4 of the double-layer fuel tank and the outer wall 1 of the double-layer fuel tank is 100 mm, and the gap and the inner cavity of the U-shaped rib 2 are filled with dry yellow sand 3. The dry yellow sand 3 must fill ...

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Abstract

The invention discloses an oil tank structure capable of effectively reducing power transformer noise. The oil tank structure is characterized in that an oil tank wall adopts a double-layer structure; an outer wall of the double-layer oil tank consists of U-shaped reinforcing ribs and steel plates arranged at intervals; dry sand is filled between the inner wall and the outer wall of the double-layer oil tank and in inner cavities of the U-shaped reinforcing ribs. A scientific principle of the oil tank structure is that a sound wave is an energy wave, when the sound wave meets a barrier, friction is generated between the barrier and the sound wave, energy of the sound wave is converted into heat energy, the energy of the sound wave is reduced, and the noise is reduced. The transformer noise can be effectively reduced by about 10dB under the premise that any other noise reduction measure is not taken, and high-capacity power transformer noise is greatly reduced.

Description

technical field [0001] The invention relates to a power transformer oil tank structure, which belongs to the field of power transformer design. Background technique [0002] As we all know, for large-capacity power transformers, the noise of self-cooling transformers is generally around 60dB. However, with the continuous expansion of cities and the transformation of urban power grids, some power stations are built in commercial and residential areas, and the problem of transformer noise has attracted more and more attention from customers and residents. The noise of 60dB can no longer fully meet the increasingly stringent noise requirements of customers, and in developed countries with better environmental awareness, once the noise of transformers exceeds the standard, it will cause strong protests from nearby residents, and even resort to legal channels. Therefore, the development of ultra-low noise transformers (about 50dB) will gradually become a new market demand in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/14H01F27/33
Inventor 黄华邓海生林娟
Owner CHINT ELECTRIC
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