Unlock instant, AI-driven research and patent intelligence for your innovation.

Two-phase flow measurement system for nuclear reactor rod bundle channel based on electrical resistance tomography

A resistance tomography, rod beam channel technology, applied in the direction of material resistance, can solve the problem of the measurement accuracy not meeting the requirements, and achieve the effect of low power consumption and low cost

Active Publication Date: 2019-04-02
CHONGQING UNIV
View PDF4 Cites 1 Cited by
  • 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 that the measurement accuracy cannot meet the requirements due to the existence of several rod bundles in the central area of ​​the rod bundle channel

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Two-phase flow measurement system for nuclear reactor rod bundle channel based on electrical resistance tomography
  • Two-phase flow measurement system for nuclear reactor rod bundle channel based on electrical resistance tomography
  • Two-phase flow measurement system for nuclear reactor rod bundle channel based on electrical resistance tomography

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] The present invention will be further described below in conjunction with embodiments, but it should not be understood that the scope of the above subject matter of the present invention is limited to the following embodiments. Without departing from the above-mentioned technical idea of ​​the present invention, various substitutions and changes based on common technical knowledge and conventional means in the field shall be included in the protection scope of the present invention.

[0043] A two-phase flow measurement system for a nuclear reactor rod bundle channel based on electrical resistance tomography, including a patch electrode group, electrical resistance tomography module, data acquisition card and computer;

[0044] Each patch electrode group includes eight patch electrodes; there are n×m rod bundles in the nuclear reactor rod bundle channel, and both n and m are natural numbers greater than or equal to 2; see figure 1 , There are 3×3 rod bundles. Among these rod...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a two-phase flow measurement system for a nuclear reactor rod bundle channel based on an electrical resistance tomography (ERT). The system comprises an 8-patch electrode arranged in a rod bundle channel, a switch array for controlling an ERT excitation measurement mode, an excitation source for providing accurate sinusoidal current, a communication system for receiving control commands and transmitting data, and a trigger signal generation circuit for synchronizing systems. By separately using ERT for each rod bundle channel and ensuring the precision of two-phase flow measurement for the nuclear reactor rod bundle channel in a multi-channel frequency reuse way, the two-phase flow measurement system provided by the invention is simple and reliable in principle, and can effectively detect the two-phase flow distribution in the rod bundle channel.

Description

Technical field [0001] The invention belongs to the technical field of two-phase flow monitoring. Background technique [0002] Electrical resistance tomography (Electrical Resistance Tomography, ERT) realizes the measurement of the detected area according to the different materials inside the detected area and the different resistances it reflects. In actual measurement, it is necessary to inject current into the detected area first, and then measure the electric potential through the electrodes arranged on the periphery. If the substance in the detected area changes, it will cause the electric potential measured on the electrode to change. By measuring the change of the electric potential on the electrode, the material distribution in the detected area can be reversed. This method has the advantages of non-invasiveness, high speed, simple system, low cost, etc., and is widely used in the fields of medical detection and two-phase flow measurement. [0003] Since the measuring el...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/10G01N27/07
CPCG01N27/07G01N27/10
Inventor 周文雄潘良明
Owner CHONGQING UNIV