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Rotary positioning device for sodium-cooled fast-reactor reloading

A positioning device, sodium-cooled fast reactor technology, applied in the direction of reactor fuel elements, reactors, greenhouse gas reduction, etc., to achieve the effect of precise positioning

Inactive Publication Date: 2010-07-21
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of aligning the core assembly positioning of the sodium-cooled fast reactor refueling machine in a fully closed state

Method used

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  • Rotary positioning device for sodium-cooled fast-reactor reloading
  • Rotary positioning device for sodium-cooled fast-reactor reloading

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with specific embodiments.

[0016] This embodiment is a rotary positioning device for refueling of the China Experimental Fast Reactor, which guides the refueling machine of the sodium-cooled fast reactor to align with the core assembly through rotary motion. Specifically, a rotating shielding plug is installed on the top of the reactor vessel. The rotating shielding plug is composed of a large cock 1 and a small cock 2. The small cock 2 is eccentrically installed on the large cock 1. Both the large cock 1 and the small cock 2 can be wound around their respective axis to rotate. The refueling machine 5 is installed eccentrically on the small cock 2. Adjust the eccentricity between the small cock 2 and the large cock 1, and the eccentricity between the refueling machine 5 and the small cock 2, and the rotary motion of the large cock 1 and the small cock 2 can be adjusted. Guide the refueling machine 5...

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Abstract

The invention belongs to the technical field of fast breeder reactors, and particularly relates to a rotary positioning device for sodium-cooled fast-reactor reloading, which consists of a large cock and a pet cock. The large cock is arranged at the top of a reactor vessel; the pet cock is arranged on the large cock; the large cock and the pet cock can do rotary motion around respective axis; the large cock is driven by a large cock driving mechanism arranged at the top of the reactor vessel; and the pet cock is driven by a pet cock driving mechanism arranged on the large cock. The rotary positioning device is characterized in that: the pet cock is eccentrically arranged on the large cock; a reloading machine is eccentrically arranged on the pet cock; and the reloading machine can be guided to be aligned with any reactor core component through the rotary motion of the large cock and the pet cock by adjusting the eccentricity of the pet cock and the large cock and the eccentricity of the reloading machine and the pet cock. The rotary positioning device for the sodium-cooled fast-reactor reloading can safely, conveniently, and precisely realize the positioning mode that the reloading machine is aligned with the reactor core component in a totally closed state.

Description

technical field [0001] The invention belongs to the technical field of fast neutron breeder reactors, in particular to a rotary positioning device for refueling of sodium-cooled fast reactors. Background technique [0002] Fast neutron breeder reactor (abbreviated as fast reactor) is a type of reactor in which fast neutrons trigger chain fission reactions. Its advantage is that it can make U -238 is transformed into Pu-239, a nuclear fuel that can be used, which can greatly improve the utilization rate of nuclear fuel. [0003] The sodium-cooled fast reactor uses liquid metal sodium as the coolant, has a high working temperature, and the covering gas in the reactor is an inert gas. Therefore, the refueling operation of the sodium-cooled fast reactor must be carried out in a fully enclosed state. In this case, the positioning method of the refueling machine of the sodium-cooled fast reactor to align the core assembly cannot adopt a simple linear motion positioning method li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C19/20
CPCY02E30/30
Inventor 杨孔雳董升国杨志伸于团结徐宝玉谷继品李海靳峰雷刘兆阳
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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