Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Online monitoring method and system for obtaining gadolinium concentration by measuring neutrons

A neutron detector and concentration technology, applied in measurement devices, radiation measurement, neutron radiation measurement, etc., can solve the problems of inability to give real-time gadolinium concentration values, radiation hazards for analysts and equipment, etc.

Pending Publication Date: 2021-12-14
CHINA NUCLEAR POWER ENG CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method of sampling measurement has time delay, and the current gadolinium concentration value cannot be given in real time, and the samples are usually highly radioactive, which may cause radiation hazards to analysts and equipment

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
  • Online monitoring method and system for obtaining gadolinium concentration by measuring neutrons
  • Online monitoring method and system for obtaining gadolinium concentration by measuring neutrons
  • Online monitoring method and system for obtaining gadolinium concentration by measuring neutrons

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0025] The measurement principle of the present invention is as figure 1 As shown, the monitoring system is equipped with a neutron source, a measurement chamber, a neutron detector, and a data processing unit. sides of the cavity. Control the neutron beam movement direction of the neutron source, so that the neutron beam emitted by the neutron source passes through the gadolinium nitrate solution in the measurement cavity from one side. The material of the measurement cavity must be corrosion-resistant and will not affect the incident neutrons. Usually stainless steel with a thickness not greate...

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 relates to an online monitoring method and system for obtaining gadolinium concentration by measuring neutrons, a neutron source and a neutron detector are respectively arranged on two sides of a measuring cavity filled with a gadolinium-containing solution, neutron beams emitted by the neutron source penetrate through the measuring cavity, part of neutrons and nuclides <157>Gd and <155>Gd in the gadolinium-containing solution are subjected to capture reaction to be converted into gamma rays; the neutron detector measures unreacted neutrons passing through the measuring cavity, and the gadolinium concentration value of the gadolinium-containing solution is deduced and calculated according to the pulse signal counting rate of the neutron detector. According to the invention, online monitoring of the gadolinium concentration in the soluble neutron poison solution is realized, the solution does not need to be sampled in the measurement process, and analysts and measurement equipment are prevented from being affected by radiation hazards.

Description

technical field [0001] The invention belongs to the on-line monitoring technology of soluble neutron poisons, in particular to an on-line monitoring method and system for obtaining gadolinium concentration by measuring neutrons. Background technique [0002] because 157 Gd and 155 Gd has the physical property of having a large absorption cross section for thermal neutrons ( 157 The thermal neutron absorption cross section of Gd is about 60900 target, 155 The thermal neutron absorption cross section of Gd is about 254,000 targets), and its compounds can be used as soluble neutron absorbers. Based on this physical property, gadolinium nitrate is often used as a soluble neutron poison and added to process equipment involving nuclear reactions to adjust reactivity. [0003] Since the concentration of gadolinium has a great influence on the reactivity, it is necessary to ensure that the concentration of gadolinium meets the requirements to ensure criticality safety. At prese...

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 Applications(China)
IPC IPC(8): G01T1/167G01T3/00G01N23/22
CPCG01T1/167G01T3/00G01N23/22
Inventor 刘伟容张伟王欣谢永骥林爽吴志强宋晓鹏
Owner CHINA NUCLEAR POWER ENG CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com