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Rotary detachable guide pipe-upper pipe seat connecting piece

A guide tube and detachable technology, which is applied in the field of rotating detachable guide tube-upper pipe seat connectors, can solve the problems of complicated operation and too many connectors, and achieve the effect of reliable connection and easy remote operation and removal

Active Publication Date: 2014-07-16
SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are too many connecting parts in the above technology, and the operation is complicated

Method used

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  • Rotary detachable guide pipe-upper pipe seat connecting piece
  • Rotary detachable guide pipe-upper pipe seat connecting piece
  • Rotary detachable guide pipe-upper pipe seat connecting piece

Examples

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] A rotating and detachable guide tube-top tube base connection, such as figure 1 , figure 2 As shown, it includes a turnbuckle cap 13 and a turnbuckle sleeve 14, both of which are circular tube structures, which are closely matched with each other and connected by a turnbuckle structure; wherein, the upper part of the turnbuckle cap 13 is an elastic skirt 1, and the elastic The lower part of the skirt 1 is provided with a semicircular protrusion 12; the elastic skirt 1 is evenly provided with 5 longitudinal grooves 11 in the upper direction, and the longitudinal grooves 11 divide the elastic skirt 1 into several petals to increase the elasticity and make the elasticity The skirt 1 can shrink inward when subjected to a certain force; the bottom end of the inner end surface of the turnbuckle cap 13 is evenly distributed along the circumferential d...

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PUM

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Abstract

The invention discloses a rotary detachable guide pipe-upper pipe seat connecting piece which comprises a turnbuckle cap (13) and a turnbuckle sleeve (14), wherein the turnbuckle cap (13) and the turnbuckle sleeve (14) are each of a round pipe structure, are in close fit and are connected through a turnbuckle structure; the upper part of the turnbuckle cap (13) is provided with an elastic skirt (1); the middle lower part of the elastic skirt (1) is provided with a semicircular bulge (12); a plurality of longitudinal grooves (11) are uniformly formed on the elastic skirt (1) along the circumferential direction; the elastic skirt (1) is divided into a plurality of sections through the longitudinal grooves (11). Through the specific turnbuckle structure and a loose design, reliable connection between an upper pipe seat and a guide pipe of a fuel assembly is achieved, and the connecting piece is conveniently and remotely operated and detached when required. The connecting piece is connected by means of a mechanical mode and is elastically locked, plastic deformation is not produced basically, and the connecting piece and the upper pipe seat are prevented from being damaged during mounting and detaching.

Description

technical field [0001] The invention belongs to the technical field of nuclear fuel elements, and in particular relates to a rotating and detachable guide pipe-upper pipe seat connecting piece. Background technique [0002] The fuel assembly is a critical component of the nuclear reactor core, which generates heat energy and transfers this heat energy to the coolant. The skeleton is the main supporting part of the fuel assembly, through which several guide tubes axially penetrate the entire fuel assembly, and bear the axial load from the upper, lower and inside of the fuel assembly. The upper nozzle is the upper interface part of the fuel assembly, and it also has the functions of protection and upper positioning. The guide tube and the upper tube base are connected together by a connecting piece [0003] At present, the main PWR fuel assemblies in the world are all designed with detachable guide tubes and upper nozzle connectors, so that when the fuel rods in the reactor ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C3/344F16B7/08
CPCY02E30/30
Inventor 郑轶雄周云清周欣丁捷童幸
Owner SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD
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