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Apparatus and method for hermetically encapsulating a fuel rod or fuel rod section in a container

A fuel rod and airtight technology, which is applied to reactor fuel elements, lightweight protective containers, reduction of greenhouse gases, etc., can solve the problems of high operating costs and expensive structures, and achieve the effect of low cost and simple structure

Inactive Publication Date: 2017-07-07
FRAMATOME GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to utilize the closure elements known from DE 196 40 393 B4, EP 1 248 270 A1, EP 1 600 982 B1 to be able to achieve not only draining of the water in the container but also a reliable fluid-tight closure of the container in the final assembled state, these closures The components are multi-piece and relatively complex in construction
In addition, the operating requirements of these closure elements correspond to high operating costs

Method used

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  • Apparatus and method for hermetically encapsulating a fuel rod or fuel rod section in a container
  • Apparatus and method for hermetically encapsulating a fuel rod or fuel rod section in a container
  • Apparatus and method for hermetically encapsulating a fuel rod or fuel rod section in a container

Examples

Experimental program
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Effect test

Embodiment Construction

[0039] according to figure 1 The container 2 has a hollow-cylindrical container part 8 which is open on its end faces 4 and 6 . On the end faces 4 , 6 there is in each case a one-piece closure plug 10 partially pushed into the middle position. Each closing plug 10 has a head part 11 and a cylindrical shaft 12 whose outer diameter is only slightly smaller than the inner diameter of the container part 8 . The head part 11 has an annular surrounding flange 13 whose outer diameter corresponds to the outer diameter of the container part 8 . In the intermediate position, the closure plug 10 protrudes beyond the hollow-cylindrical container part 8 relative to its final position by an axial excess length s, so that the part of the shaft 12 lying below the head part 11 lies in the container part 8 outside.

[0040] Each closure plug 10 is provided with a channel 14 which, in this intermediate position, fluidly connects the interior space 15 with the exterior space 16 .

[0041] A s...

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PUM

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Abstract

A container, a device, and a method encapsulate a fuel rod or a fuel rod portion in a gas-tight manner. The container has a hollow cylindrical container part which is closed at the free ends of the container part in a fluid-tight manner by a respective single-piece closure stopper. The closure stopper is provided with a channel that fluidically connects the flushing chamber of the container part to the exterior exclusively in an intermediate position, which is assumed prior to reaching an end position during the assembly process and in which the closure stopper additionally projects out of the container part by an axial length compared to the end position of the closure stopper.

Description

technical field [0001] The present invention relates to a container, device and method for hermetically encapsulating fuel rods or fuel rod sections. Background technique [0002] For transport and / or storage purposes, defective fuel rods or fuel rod sections are vacuum- and fluid-tightly introduced into containers or capsules, as is described, for example, by DE 196 40 393 B4, EP 1 248 270 A1, EP 1 600 982 B1 and WO2010 / 084122 A1 known. Because the encapsulation of fuel rods or fuel rod segments takes place underwater as close as possible to the original storage location, i.e. in the fuel element storage tank, it is necessary that water Penetrates into the container. However, this water has to be removed from the fuel rod container, since it evaporates due to the decay heat and leads to an impermissibly high internal pressure. For this reason, the closure elements used for containers known from DE 196 40 393 B4, EP 1 248 270 A1, EP 1 600 982 B1 have passages through whi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C19/26G21F5/008G21F5/12
CPCG21C19/26G21F5/008G21F5/12Y02E30/30
Inventor W·霍梅尔E·诺伊鲍尔
Owner FRAMATOME GMBH
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