Low-noise oil-immersed transformer
An oil-immersed transformer, low-noise technology, applied in the direction of transformer/inductor cooling, transformer/inductor noise damping, etc., can solve the problems of low-frequency signal noise reduction effect needs to be improved, technical difficulty and high cost, low cost, etc. To achieve the effect of compact structure, low cost and noise reduction
Pending Publication Date: 2021-07-02
STATE GRID HUNAN ELECTRIC POWER +2
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Problems solved by technology
The former can directly reduce the noise level of the transformer from the source by improving the material and structure of the body, and the noise reduction effect is the most significant, but the technical difficulty and cost are relatively high
The latter reduces transformer noise by applying sound-insulating / absorbing (vibration) materials in the process of noise (vibration) propagation to absorb vibration-acoustic signal energy, which has a certain noise reduction effect and relatively low cost, but for low-frequency signal reduction Noise still needs to be improved
Method used
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[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0024] Figure 1 to Figure 4 An embodiment of the low-noise oil-immersed transformer of the present invention is shown. In this embodiment, several hooking parts 14 are preset on each side 13 of the oil-immersed transformer oil tank housing 1 (for example, it can be a hook, a hanging rod etc.), arranged up and down, and two hanging holes 21 are set at the upper and lower ends of each damping and sound-insulating board 2, and are detachably installed on the side 13 through the hanging holes 21; the damping and sound-insulating board 2 is located on the fuel tank shell 1 and the heat sink (not shown in the figure, the heat sink is usually connected to the fuel tank shell 1 by oil pipe); the damping sound insulation board 2 includes two layers of aluminum layers and a flexible sound insulation layer sandwiched between the two layers of a...
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Abstract
The present invention discloses a low-noise oil-immersed transformer which comprises an oil tank shell, the oil tank shell comprises a top face, a bottom face and a plurality of side faces connected between the top face and the bottom face, and at least one side face is provided with a damping sound insulation plate. The transformer has the advantages of being compact in structure, low in cost, beneficial to reducing the noise of the transformer body and the like.
Description
technical field [0001] The invention relates to the technical field of power equipment, in particular to a low-noise oil-immersed transformer. Background technique [0002] The power transformer is an important part of the power transmission and distribution network of the power system. Its main purpose is to convert the grid voltage to achieve power transmission. With the continuous increase of the scale of the power grid and the shortage of urban land resources, more and more substations are located deep into the city center. Due to a series of reasons such as uneven manufacturing process, aging equipment, long-term operation, and close distance to sensitive points, the noise pollution problem of power transformers has become increasingly prominent. Research on transformer noise control technology is of great significance for the development of power grids. [0003] The noise of the transformer comes from the transformer body and the cooling system. The body noise comes f...
Claims
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IPC IPC(8): H01F27/33H01F27/14
CPCH01F27/33H01F27/14
Inventor 胡胜陈炜卢铃曹浩陈非吴晓文周舟车垚彭继文
Owner STATE GRID HUNAN ELECTRIC POWER