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PTC (Positive Temperature Coefficient) rapid heating device and method for dry-type distribution transformer winding

A distribution transformer and rapid heating technology, which is applied in the direction of electric heating devices, ohmic resistance heating parts, electrical components, etc., can solve the problems of manual operation, low heating efficiency, and heat dissipation when installing and disassembling PTC heaters. Achieve the effect of realizing automatic control, improving heating efficiency and reducing energy dissipation

Active Publication Date: 2022-07-05
GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the defects in the prior art, the present invention provides a PTC rapid heating device and method for dry-type distribution transformer windings, which are used to solve the problem of low heating efficiency when PTC heating sheets are used to heat the windings during the detection of dry-type distribution transformer windings. , slow heat conduction, serious heat dissipation, at the same time, the installation and removal of the PTC heater needs to be manually operated, the efficiency is low, and there are potential safety hazards

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  • PTC (Positive Temperature Coefficient) rapid heating device and method for dry-type distribution transformer winding
  • PTC (Positive Temperature Coefficient) rapid heating device and method for dry-type distribution transformer winding
  • PTC (Positive Temperature Coefficient) rapid heating device and method for dry-type distribution transformer winding

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Embodiment Construction

[0040] The specific embodiments of the present invention will be described in detail below. It should be noted that the embodiments described herein are only used for illustration and are not used to limit the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one of ordinary skill in the art that these specific details need not be employed to practice the present invention. In other instances, well-known circuits, software, or methods have not been described in detail in order to avoid obscuring the present invention.

[0041]Throughout this specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in the present invention in at least one embodiment. Thus, appearances of th...

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Abstract

The invention relates to a PTC (Positive Temperature Coefficient) rapid heating device and method for a dry-type distribution transformer winding, which are used for solving the problems that when the dry-type distribution transformer winding is detected, the winding is heated by adopting a PTC heating sheet, the heating efficiency is low, the heat conduction is slow, the heat dissipation is serious, the PTC heating sheet needs to be manually mounted and dismounted, the efficiency is low, and potential safety hazards exist. Comprising a heating device, a heat transfer device, a clamping device, a lifting mechanism and a control system. A copper wiring terminal of the dry-type distribution transformer is rapidly heated through the heating device, and part of heat dissipated by the heating device is conducted to a copper lead of the dry-type distribution transformer through the heat transfer device, so that the heating efficiency is improved, the time is saved for winding material detection, and the effects of energy conservation and emission reduction are achieved; the walking device, the clamping and lifting mechanism, the heating device and the clamping device are controlled through a control system, and the winding terminal can be heated through automatic control.

Description

technical field [0001] The invention relates to the field of distribution transformer detection, in particular to a PTC rapid heating device and method for dry-type distribution transformer windings. Background technique [0002] During the operation of the transformer, the windings are subjected to high voltage, high current, high field strength, mechanical load and thermal load. Therefore, the transformer winding material is required to have good electrical conductivity, mechanical strength and heat resistance, and can withstand a certain overload. and short-circuit shocks. Transformer windings are mainly made of two materials: copper and aluminum. The electrical and mechanical properties of copper are superior to those of aluminum. The price of copper is about 3 times that of aluminum, and the overall cost of copper winding transformers (copper transformers) is about 1.5 times that of aluminum winding transformers (aluminum transformers). Therefore, the winding materia...

Claims

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Application Information

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IPC IPC(8): H05B3/02H05B1/02
CPCH05B3/02H05B1/02H05B1/023
Inventor 尹旷方健王勇黄青丹
Owner GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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