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Plug removing device for heavy water reactor fuel system

A technology for heavy water reactors and dismantling devices, applied in the direction of reactor fuel elements, reactors, recycling technology, etc., can solve problems such as roll loss, and achieve the effect of preventing damage

Active Publication Date: 2012-07-11
韩电KPS株式会社
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the roll may be lost

Method used

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  • Plug removing device for heavy water reactor fuel system
  • Plug removing device for heavy water reactor fuel system
  • Plug removing device for heavy water reactor fuel system

Examples

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Embodiment Construction

[0040] Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Wherever possible, the same reference numbers will be used in the drawings and the specification to refer to the same or like parts.

[0041] Such as Figure 1-Figure 3 As shown in, the present invention provides a plug removal device for a heavy water reactor fuel system, the device is used to remove a plug 10 installed on a fuel element in a heavy water reactor fuel system, the plug has a plug formed along its inner circumference The lock ring rim 11 and push tube 12. The plug removal device comprises: a clamping housing 100 consisting of an outer housing 110 formed radially with a plurality of ball holes 111 inserted into the inner diameter region of the plug 10, the inner housing There is a rod sleeve 121; a positioning ball 200, which is connected into the ball hole 111 of the outer housing 110 and locked on the lock ring rim 11 to fix the...

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PUM

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Abstract

The invention provides a plug removing device for a heavy water reactor fuel system. The removing device is arranged on a plug on a fuel element in the heavy water reactor fuel system. The plug comprises a locking ring rim and a pushing pipe which are formed along the internal circumference of the plug. The plug removing device comprises a clamping shell, positioning balls, a guide shaft bush, an elastic piece, a mortise lock pressing piece, a hollow main bar and a sub bar, wherein the clamping shell consists of an external shell and an internal shell; a plurality of ball pores are formed in the radial direction of the external shell, and the external shell is inserted into an internal diameter region of the plug; the internal shell is provided with a bar sleeve; the positioning balls are connected in the ball pores of the external shell and are locked on the locking ring rim so as to fix the clamping shell to the plug; the guide shaft bush is provided with a releasing slot which is formed to guide the positioning balls to release and is connected to guide the internal shell and the external shell to slide; the elastic piece is arranged between the guide shaft bush and the clamping shell and is used for recovering the released positioning balls so as to elastically lock the positioning balls; the mortise lock pressing piece is connected so as to slide into the internal diameter region of the internal shell and press the inner surface of the plug; the hollow main bar is screwed into a bar sleeve of the internal shell so as to make the mortise lock pressing piece slide; and the sub bar is connected to the internal diameter region of the main bar and presses the pushing pipe to remove the plug.

Description

technical field [0001] The present invention generally relates to a plug removal device for a heavy water reactor fuel system, and more particularly to a plug removal device for a heavy water reactor capable of easily, quickly and accurately removing a plug provided on a fuel element in a heavy water reactor fuel system Plug removal device for fuel system. Background technique [0002] As known in the art, a heavy water reactor is a nuclear reactor that uses heavy water as a coolant and moderator. Heavy water reactors are equipped with a fuel system in which each fuel element is provided with a plug. [0003] Plugs are removed from fuel elements for a different purpose. Conventionally, ear fixtures are secured to remove the bung, and the bung is then removed or installed by tightening the handle using a nut. [0004] There are following problems in this ear-shaped fixing device: [0005] First, when the handle is tightened after removing the stopper, since the ear-shaped...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C19/36G21C19/02
CPCY02E30/30Y02W30/50
Inventor 权纯益
Owner 韩电KPS株式会社
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