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Sealing device for outer surface of nuclear fuel cladding

A sealing device and cladding tube technology, applied in nuclear engineering, nuclear power generation, nuclear engineering problems, etc., can solve the problems of not considering the circular motion of the fuel cladding tube, expensive fatigue-sensitive space, etc.

Inactive Publication Date: 2006-08-16
BELGONUCLEAIRE SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solution is effective, but requires expensive, fatigue-sensitive and space-consuming accessories
The circular motion of the fuel cladding is not considered in this invention

Method used

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  • Sealing device for outer surface of nuclear fuel cladding
  • Sealing device for outer surface of nuclear fuel cladding
  • Sealing device for outer surface of nuclear fuel cladding

Examples

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Embodiment Construction

[0056] figure 2 Shown is a fuel cladding 1 filled with fuel pellets and provided with a first plug 3 and a second plug 4 forming a fuel rod. figure 2 Also shown are the two other inserts mentioned above, namely the blanket pellet and the compression spring.

[0057] FIG. 3 a shows the situation when used in a process chamber, ie the chamber 7 has to be sealed only when the fuel cladding 1 is engaged in the chamber 7 . The sealing is ensured by bringing the membrane 8 into contact with the fuel cladding 1 . Figure 3a (details shown in Figure 6a Middle) shows the diaphragm 8 contracted by the partial vacuum created via the gas system 14 . It is not possible to maintain the specified gas pressure in this chamber 7 without the fuel cladding 1 .

[0058] Figure 3b Indicates the situation when used in a contamination chamber or a processing chamber that must remain sealed between two successive processing operations, i.e. the chamber 7 must be sealed at all times and not on...

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Abstract

Sealing device (10) between two media and the outer surface of a fuel cladding (1), characterized by three states: a state retracted for contactless axial insertion of said fuel cladding (1) though the sealing device, a state statically hermetically sealed around said fuel cladding maintained at rest, and a state dynamically hermetically sealed around said fuel cladding under axial and / or rotational movement.

Description

technical field [0001] The invention relates to a seal between two media and the outer surface of a nuclear fuel cladding tube. Background technique [0002] Said device is currently used to seal the penetration of the fuel cladding into a contamination chamber which can be maintained under negative pressure to prevent the propagation of contamination into the process chamber or the external environment. Thus, the portion of the fuel cladding that does not interface with the contamination chamber remains free of contamination, thereby avoiding the hassle of subsequent required decontamination treatments. In order to avoid the release of contaminants into the external environment, tightness must be ensured at all times. [0003] The device also serves to seal the penetration of the fuel cladding into the process chamber. The processing chamber must have and maintain a specified air pressure for processing operations. Since the processing chamber is assumed not to be contam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C21/02
CPCG21Y2002/303G21Y2002/304G21C21/02G21Y2004/301Y02E30/30
Inventor L·阿尔特斯A·范德盖恩斯特J·埃朗
Owner BELGONUCLEAIRE SA
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