Cooling device of power transformer

Patent metadata

Field	Value
Publication number	US-9818525-B2
Application number	US-201615184282-A
Country	US
Kind code	B2
Filing date	Jun 16, 2016
Priority date	Jun 18, 2015
Publication date	Nov 14, 2017
Grant date	Nov 14, 2017

Abstract

In some embodiments, a cooling device of a power transformer is presented and, more particularly, to a cooling device of a power transformer which may include a heat pipe and a heat sink to improve cooling performance, and to attenuate noise by eliminating a cooling fan.

First claim

What is claimed is:

1. A cooling device of a power transformer, the cooling device comprising:
an upper frame and a lower frame;
a core installed between the upper frame and the lower frame;
a coil wound around a leg portion of the core;
a plurality of radial spacers formed of plates and interposed between coil sections horizontally dividing the coil;
a heat pipe supported by the plurality of radial spacers and installed inside the coil;
a heat sink coupled to an upper portion of the heat pipe and exposed to an upper portion of the coil; and
a fractionating column interposed between the heat sink and the heat pipe, one end of the fractionating column being provided with one conduit and connected to the heat sink, and the other end of the fractionating column being provided with a plurality of conduits and connected to the heat pipe,
wherein each of the radial spacers is provided with a plurality of through holes, and the heat pipe is inserted into the through holes.

2. The cooling device according to claim 1 , wherein the plurality of through holes is formed in a shape of a slit, and wherein the heat pipe comprises a plurality of heat pipes inserted into the through holes in parallel.

3. The cooling device according to claim 1 , wherein the through holes are spaced from each other, and wherein the heat pipe comprises a plurality of heat pipes installed through the through holes and spaced from each other.

4. The cooling device according to claim 1 , wherein the heat sink is fixed to the upper frame.

5. The cooling device according to claim 1 , wherein the heat sink comprises a plurality of heat sinks, the plurality of heat sinks being disposed circumferentially.

6. The cooling device according to claim 1 , further comprising,
a plurality of axial spacers interposed between coil segments of the coil configuring sections in a radial direction.

7. The cooling device according to claim 6 , wherein the heat pipe is inserted into an axial hole formed in the axial spacers.

Assignees

• Lsis Co Ltd

Inventors

• Kim Seong-Eon

Classifications

• H01F27/322

  the insulation forming channels for circulation of the fluid · CPC title

• H01F27/22

  Cooling by heat conduction through solid or powdered fillings · CPC title

• H01F27/2876

  Cooling (cooling transformers and inductances in general H01F27/08) · CPC title

• H01F27/16 Primary

  Water cooling · CPC title

• H01F27/12

  Oil cooling · CPC title