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Method and system for measuring geometric density of nuclear fuel pellet

A technology of density measurement and nuclear fuel, applied in specific gravity measurement, measurement device, analysis material, etc., can solve the problems of large human error of measurement personnel, scratched surface of the measured object, low measurement efficiency, etc., and achieves fast measurement speed and simple structure. Stable and improved measurement accuracy

Inactive Publication Date: 2016-05-11
CHONGQING UNIV +1
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Problems solved by technology

This method mainly has the following problems: 1. The mechanical action in the contact measurement is absolute, so the measuring instrument or the measured object may produce mechanical deformation during the measurement process, and the error generated in the absolute measurement is relatively large, and may even scratch the object. Surface of the object to be measured
2. When the contact type is used, the measuring instrument has relatively high requirements for the operator, and the human error introduced by the measuring personnel is relatively large.
3. There are many measurement stations, and the measurement efficiency is low

Method used

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  • Method and system for measuring geometric density of nuclear fuel pellet
  • Method and system for measuring geometric density of nuclear fuel pellet
  • Method and system for measuring geometric density of nuclear fuel pellet

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Embodiment Construction

[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0041] During specific implementation: if Figure 1~Figure 5 As shown, a nuclear fuel pellet geometric density measurement system includes a mass measurement module 91 and a diameter and height measurement module 92, and the diameter and height measurement module 92 includes at least one set of surface light sources and two-dimensional surface array CMOS sensor; the length of the surface light source and the two-dimensional area array CMOS sensor is greater than the diameter of the core block to be measured; the height of the surface light source and the two-dimensional area array CMOS sensor is greater than the height of the core block to be measured; The two-dimensional area array CMOS sensor is connected to a computer measurement and control device 4, and the computer measurement and control device 4 includes a data processing module and a display, and the...

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Abstract

The invention discloses a method and system for measuring the geometric density of a nuclear fuel pellet. The method comprises the following steps that the mass of the pellet to be detected is firstly obtained through a balance, then the boundary dimension of the pellet to be detected is measured, the volume of the pellet to be detected is calculated according to the boundary dimension of the pellet to be detected, and then the volume is divided by the mass to obtain the density of the pellet to be detected. According to the step of measuring the boundary dimension of the pellet to be detected, the diameter and height of the pellet to be detected are further measured. The method has the advantages of being high in measurement precision, high in measurement speed and the like. The system has the advantages of being simple and stable in structure, convenient to operate, high in disturbance resisting capacity, easy to maintain, accurate in locating, high in detecting precision, good in repeatability, wide in application range, beneficial for improving the measurement precision and the like.

Description

technical field [0001] The invention relates to a density measurement technology of nuclear fuel pellets, in particular to a method and system for measuring the geometric density of nuclear fuel pellets. Background technique [0002] At present, energy shortage and environmental pollution are important factors restricting the further development of the national economy. Nuclear power is an economical, clean, safe and reliable new energy source. Under the background of increasingly serious environmental pollution and energy crisis, nuclear power is about to usher in a new peak of development. An important factor restricting the development of nuclear power is safety issues, and the parameter control of nuclear fuel pellets is at the core of safety protection. [0003] At present, nuclear power plants at home and abroad widely use uranium dioxide pellets as nuclear fuel elements. In order to ensure the safe operation of reactors, very strict quality indicators have been formu...

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Application Information

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IPC IPC(8): G01N9/02G01B11/24
CPCG01B11/2433G01N9/02G01N2009/024
Inventor 高潮郭永彩扶新廖宾邓话王涛王友良陈晓香
Owner CHONGQING UNIV
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