Coil assembly for a control rod driver having improved thermal resistance, and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-9564265-B2
Application number	US-201313950943-A
Country	US
Kind code	B2
Filing date	Jul 25, 2013
Priority date	Jan 27, 2011
Publication date	Feb 7, 2017
Grant date	Feb 7, 2017

Abstract

Provided is a coil assembly having improved heat resistance for use in a control rod driver, in which the heat resistance of coils is improved to increase the lifespan thereof and the deterioration of the coils and the fall of a control rod are thus securely prevented from occurring due to continuous operations of the control rod driver during an automatic load follow operation, thereby improving the safety and economic feasibility of a nuclear power plant, and a method for manufacturing the same. The coil assembly includes a covered wire ( 110 ) which includes a coil wire ( 111 ) and a polyether ether ketone (PEEK) coating layer ( 112 ) covering an outer circumferential surface of the coil wire ( 111 ) and is wound in multiple layers; a coil coating layer ( 130 ) formed by filling gaps in the covered wire ( 110 ) with varnish; an insulating tape layer ( 120 ) covering external sides of a wound layer of the covered wire ( 110 ) insulated by the coil coating layer ( 130 ); and silicon molding ( 140 ) covering external sides of the insulating tape layer ( 120 ).

First claim

The invention claimed is:

1. A coil assembly having improved heat resistance for use in a control rod driver, comprising:
a covered wire ( 110 ) including a coil wire ( 111 ) and a polyether ether ketone (PEEK) coating layer ( 112 ) directly covering an outer circumferential surface of the coil wire ( 111 ), and wound in multiple layers;
a coil coating layer ( 130 ) formed by filling gaps in the covered wire ( 110 ) with varnish;
an insulating tape layer ( 120 ) directly covering external sides of a wound layer of the covered wire ( 110 ) insulated by the coil coating layer ( 130 ); and
silicon molding ( 140 ) covering external sides of the insulating tape layer ( 120 );
wherein both ends of the coil wire ( 111 ) are bound with a lead wire of a power supply cable ( 621 ) by brazing.

2. The coil assembly of claim 1 , wherein the coil wire ( 111 ) is a copper wire having no splices.

Assignees

• Korea Hydro & Nuclear Power Co

Inventors

• Choi Yang Jo
• Jang Young Ho
• Lee Jae Gon

Classifications

• G09F9/33 Primary

  being semiconductor devices, e.g. diodes · CPC title

• G09F2013/222

  with LEDs · CPC title

• Y10S362/80

  Light emitting diode · CPC title

• G09F7/12

  the elements being secured or adapted to be secured by self-adhesion, moisture, suction, slow-drying adhesive or the like · CPC title

• G09F9/301

  flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED · CPC title