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Natural cooling flow heat transfer characteristic research experiment system and method

A technology with natural cooling and heat transfer characteristics, applied in the field of experimental devices, can solve problems such as leakage and spent fuel assembly burnout, and achieve the effects of good safety, dense layout, and convenient operation

Pending Publication Date: 2022-03-01
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

In the end, the zirconium alloy and oxygen undergo a strong oxidation-reduction reaction at high temperature, releasing a large amount of heat, and the spent fuel components are burned to cause radioactive leakage

Method used

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  • Natural cooling flow heat transfer characteristic research experiment system and method
  • Natural cooling flow heat transfer characteristic research experiment system and method
  • Natural cooling flow heat transfer characteristic research experiment system and method

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Embodiment Construction

[0038] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0039] An embodiment of the present invention provides an experimental system for researching heat transfer characteristics of natural cooling flow, including its heat transfer characteristics and transient characteristics in the heating process. The bundle temperature measurement points in the experimental system are densely arranged, which can clearly and completely provide the temperature distribution inside the fuel assembly, and provide a solid foundation for analyzing the heat transfer mechanism in...

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Abstract

The invention provides a natural cooling flow heat transfer characteristic research experiment system and method, and relates to the technical field of experiment devices, the method comprises an experiment body, a rectangular channel, a related support structure, a direct current power supply, a measuring instrument and a data acquisition system; the related supporting device is used for supporting the whole experiment body; the experiment body is connected with the direct-current power supply, the rectangular channel is connected with the measuring instrument, and the data acquisition system is responsible for acquiring related data of the measuring instrument; the outer wall of the rectangular channel is wrapped by a heat-insulating layer. The temperature distribution in the nuclear reactor fuel assembly can be finely monitored, the transient characteristic of the fuel assembly in the temperature rising process can be explored, and the device has the advantages of being high in experimental data precision, good in safety, convenient to operate and the like.

Description

technical field [0001] The present invention relates to the technical field of experimental devices, in particular to an experimental system for researching natural cooling flow and heat transfer characteristics of nuclear reactor fuel assemblies in an air environment, and in particular to an experimental system and method for researching natural cooling flow and heat transfer characteristics. Background technique [0002] After the Three Mile Island accident and the Chernobyl accident, the natural circulation system has gradually been widely used in the nuclear industry because it can automatically discharge heat without external energy input. Over the past few decades, a large number of experimental and numerical studies of natural circulation systems have been carried out. At present, there have been a large number of experimental studies on the natural convection behavior inside the nuclear reactor fuel assembly. These studies mainly focus on the local steady-state therm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/20
CPCG01N25/20Y02E30/30
Inventor 刘茂龙顾汉洋王小文肖瑶刘利民
Owner SHANGHAI JIAO TONG UNIV
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