A Mechanism for Measuring Oil Temperature on the Top Layer of Transformer

A top-layer oil temperature and transformer technology, which is applied in the field of transformers, can solve problems such as insulation aging of large power transformers, and achieve the effects of being suitable for large-scale applications, convenient installation, and high accuracy

Active Publication Date: 2019-03-15
WUJIANG TRANSFORMER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This brings the risk of insulation aging of large power transformers, which is often fatal for some applications requiring high reliability

Method used

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  • A Mechanism for Measuring Oil Temperature on the Top Layer of Transformer
  • A Mechanism for Measuring Oil Temperature on the Top Layer of Transformer

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Experimental program
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Effect test

Embodiment

[0014] Such as figure 1 with figure 2 As shown, the present embodiment provides a mechanism for measuring the oil temperature of the top layer of a transformer, which includes a transformer body; the transformer body includes a box body 1, a case cover 2 and a body 3; the winding of the body 3 is provided with The insulating end ring 4; the upper part of the insulating end ring 4 is provided with a pressure plate 5; the pressure plate 5 is provided with a pressure plate oil penetration hole 6; the upper iron yoke 7 is also arranged on the body 3; the upper iron The right side of the yoke 7 is also provided with a core clamp 8; the core clamp 8 is pressed on the pressure plate 5; the pressure plate 5 is also provided with a spacer 9; 6. The oil penetration hole 12 of the pad is provided at the corresponding position; the right side of the iron core clip 8 is also welded with a support plate 10; the support plate 10 is pressed on the pad 9 and fixed with a temperature measurin...

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Abstract

The invention relates to a mechanism of measuring a top oil temperature of a transformer. The mechanism of measuring the top oil temperature of the transformer comprises a transformer body which comprises a box body, a box cover and a body; an insulating end ring is arranged on a winding of the body; a pressure plate is arranged on the upper portion of the insulating end ring; a pressure plate oil permeable through hole is formed in the pressure plate; an upper yoke is also arranged on the body; an iron core clamp is also arranged on the right side of the upper yoke; the iron core clamp presses the pressure plate; a gasket is also arranged on the pressure plate; a cushion block oil permeable through hole is formed in a cushion block; a supporting plate is also welded to the right side of the iron core clamp; the supporting plate presses the cushion block and a temperature measuring device is fixed thereon; a temperature sensing head of the temperature measuring device extends into the oil permeable through hole. According to the mechanism of measuring the top oil temperature of the transformer provided by the invention, the measured oil temperature is the oil temperature of the upper end portion of the winding. The measuring result is high in accuracy, the risk of local overheating of the transformer is avoided, no special demands on a basic structure of the transformer are put thereon, and the mechanism is convenient to mount and suitable for large-scaled application.

Description

technical field [0001] The invention relates to the field of transformers, in particular to a mechanism for measuring the oil temperature of the transformer top layer. Background technique [0002] At present, the top layer oil temperature measuring device of the common transformer is arranged on the case cover, and its temperature sensing device goes deep under the case cover. There is a difference between the top layer oil temperature measured here and the oil temperature at the upper end of the real winding, which is affected by the overall oil flow conditions. This difference may reach intolerable levels when oil flow conditions vary. For conventional large-scale integrated power transformers with natural convection cooling, the radiators are directly hung on the transformer body, or arranged on both sides of the transformer after being connected by pipe joints. This kind of conventional structure, the oil passage formed by natural convection is relatively smooth, on t...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H01F27/40G01K5/00
CPCG01K5/00H01F27/402H01F2027/406
Inventor文杰
OwnerWUJIANG TRANSFORMER CO LTD