Multi-target three-dimensional dynamic tracking method of loose parts of nuclear power plant

A technology of loose parts and three-dimensional dynamics, which is applied in the field of nuclear engineering and can solve problems such as poor consistency

Inactive Publication Date: 2016-06-22
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can obtain high quality estimation accuracy, but requires a large amount of experimental data to train it, and the consistency is poor

Method used

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  • Multi-target three-dimensional dynamic tracking method of loose parts of nuclear power plant
  • Multi-target three-dimensional dynamic tracking method of loose parts of nuclear power plant
  • Multi-target three-dimensional dynamic tracking method of loose parts of nuclear power plant

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Experimental program
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Embodiment

[0118] The present invention will be further described below in conjunction with embodiment:

[0119] Effect of the present invention can be explained by the experimental result analysis of curved surface experiment:

[0120] 1. Test conditions

[0121] The test platform of this experiment is composed of test object, sensor, charge amplifier, data acquisition card and computer. Test objects include: steel balls, boiler caps and their supports. The size of the boiler roof is R=50cm, and the area of ​​each grid is about 20*20cm 2 . In order to reduce the impact of environmental noise as much as possible, buffer isolation is added under the boiler roof, and the buffer isolation is made of rubber pads and cork. The weights of steel balls are 44g, 175g, 225g, 360g, 510g, 640g, 880g, 1120g respectively.

[0122] 2. Data collection

[0123] Data acquisition includes two parts: shock signal acquisition and background noise acquisition.

[0124] (1) Shock signal collection: Thre...

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Abstract

The invention discloses a multi-target three-dimensional dynamic tracking method of loose parts of a nuclear power plant. The multi-target three-dimensional dynamic tracking method comprises the following steps: step (1), establishing a database; step (2), carrying out three-dimensional virtual modeling; step (3), acquiring field signals of the loose parts; step (4), positioning the loose parts; step (5), estimating the quality of the loose parts; and step (6), dynamically tracking and displaying. The signals of the loose parts can be periodically acquired through an acceleration transducer; and after the loose parts are subjected to positioning and quality estimation, the loose parts are dynamically tracked by utilizing a three-dimensional visualization technology, and thus evidences are provided for expert diagnosis and breakdown maintenance. The multi-target three-dimensional dynamic tracking method has the advantages of strong anti-noise capability, high positioning precision and small quality estimation errors, and can be used for simultaneously tracking a plurality of loose part targets.

Description

technical field [0001] The invention belongs to the technical field of nuclear engineering, and in particular relates to the positioning of loose parts, the quality estimation of the loose parts and the three-dimensional dynamic tracking of the loose parts. This method can not only dynamically track the state of loose parts, but also track multiple loose parts with different masses. technical background [0002] In order to monitor possible falling or loose parts in the light water reactor coolant system of nuclear power plants, installing a Loose Parts Monitoring System (LPMS) in the primary circuit of nuclear power plants is an effective way to improve the safety and stability of nuclear power plant operations. However, after the traditional LPMS detects the falling loose parts, the nuclear power plant cannot be shut down for maintenance immediately. Therefore, it is necessary to dynamically track loose parts, visually display the internal working process of the nuclear p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C17/02
CPCG21C17/02Y02E30/30
Inventor 方力先刘旭万鹏飞
Owner HANGZHOU DIANZI UNIV
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