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A water-cooled dry-type test transformer

A test transformer, dry-type technology, applied in the direction of transformer, transformer/inductor cooling, transformer/inductor components, etc., can solve the problems of small heat exchange area, unable to cool the internal temperature, unable to achieve heat dissipation and cooling effect, etc. Achieve the effect of increasing the heat exchange area, simplifying the structure, and improving the cooling and heat dissipation effect.

Active Publication Date: 2017-10-20
邓福亮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water cooling method is one of the more common cooling methods for transformers on the market at present, that is, a water cooling device is installed on the transformer. This method is generally realized by the water circulation outside the primary or secondary hollow wire tube surrounded by the iron core. The water cooling device is placed outside the coil. This local cooling method can only cool the surface temperature, but not the internal temperature. The heat exchange area between the cooling device and the coil is small, which cannot achieve good heat dissipation and cooling effect.

Method used

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  • A water-cooled dry-type test transformer
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  • A water-cooled dry-type test transformer

Examples

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Embodiment Construction

[0023] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0024] A water-cooled dry-type test transformer of the present invention comprises a test transformer housing 1, an iron core 2, a high-voltage coil 3 and a low-voltage coil 4 are arranged in the test transformer housing 1, and the high-voltage coil 3 and the low-voltage coil 4 are mounted on the iron core 2 Coaxial arrangement, the high-voltage coil 3 is located outside the low-voltage coil 4, and also includes a water cooling device 5, the water cooling device 5 includes a cooling water pipe 51, a cooling water tank 52, and a cooling water pump 53 installed on the cooling water pipe 51, and the water inlet and outlet of the cooling water pipe 51 The water outlets are all connected to the cooling water tank 52, and the middle part of the cooling water pipe 51 is in contact with the low-voltage coil 4. It is characterized in that: the contact pa...

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Abstract

The invention discloses a water cooling dry-type test transformer. The water cooling dry-type test transformer comprises a test transformer shell, wherein an iron core, a high-voltage coil and a low-voltage coil are arranged in the test transformer shell, the high-voltage coil and the low-voltage coil are coaxially arranged on the iron core, and the high-voltage coil is arranged outside the low-voltage coil. The water cooling dry-type test transformer also comprises a water cooling device, wherein the water cooling device comprises a cooling water pipe, a cooling water tank and a cooling water pump installed on the cooling water pipe, a water inlet and a water outlet of the cooling water pipe are connected with the cooling water tank, the middle part of the cooling water pipe at least contacts the low-voltage coil, the contact part of the cooling water pipe and the low-voltage coil is in a spiral shape, the number of turns of the cooling water pipe is matched with the number of turns of the low-voltage coil, and the cooling water pipe and the low-voltage coil surround the iron core in parallel. The water cooling dry-type test transformer has the advantages of good cooling effect and novel structure.

Description

technical field [0001] The invention belongs to the technical field of test transformers, and relates to a cooling device for a dry-type transformer, in particular to a water-cooled dry-type test transformer. Background technique [0002] Test transformer refers to a transformer that provides high voltage for AC withstand voltage test. It is characterized by high output voltage, small capacity, large transformer short-circuit impedance, and large transformation ratio. [0003] Since the test transformer needs to be used on the test site, it is necessary to design a compact structure to minimize the volume under the premise of meeting the test capacity, so as to facilitate transportation and on-site installation. For the test transformer, the coil generates a lot of heat when it works for a long time, and the coil is easy to burn out, resulting in damage to the test transformer. [0004] In order to ensure that the heat generated by the test transformer during operation doe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/16H01F27/28H01F38/00G01R31/00
CPCG01R31/00H01F27/16H01F27/2847H01F38/00
Inventor 邓福亮周建平
Owner 邓福亮
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