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

Method for measuring the pressure and/or molar mass of a gas in a housing, and corresponding measurement assembly

A gas and cover technology, which can be used in the direction of measuring fluid pressure, measuring fluid pressure through electromagnetic elements, measuring devices, etc., which can solve the problems of low measurement accuracy and so on.

Active Publication Date: 2010-02-10
CENT NAT DE LA RECH SCI (C N R S) +1
View PDF2 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, even after calibration, the accuracy of the measurement is low
[0015] Finally, the measurement method does not work on rods that contain objects that cause waves to diverge, such as springs

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
  • Method for measuring the pressure and/or molar mass of a gas in a housing, and corresponding measurement assembly
  • Method for measuring the pressure and/or molar mass of a gas in a housing, and corresponding measurement assembly
  • Method for measuring the pressure and/or molar mass of a gas in a housing, and corresponding measurement assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] exist Figure 1A and 1B In , a housing 1 containing a gas 2 is schematically shown.

[0047] The housing 1 is, for example, a fuel rod, and the gas 2 is, for example, helium or a gas mixture.

[0048] The housing 1 supports the acoustic sensor.

[0049] The sensor is connected to the housing thus forming an assembly of the sensor and the housing.

[0050] The acoustic sensor is able to measure at least one physical parameter of the gas 2, such as the pressure and / or the molar mass of the gas in the enclosure.

[0051] Acoustic sensors include:

[0052] - at least one transducer 5 for

[0053] On the one hand, an acoustic signal that vibrates the enclosure and the gas is generated, and

[0054] On the other hand, detect the acoustic response signal characteristics of the vibration of the gas and the housing;

[0055] - bonding layer 6, which is between the transducer 5 and the housing 1;

[0056] - an electrical system 8, which is connected to the transducer 5 and...

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 sensor has a piezo-electric type transducer (5) generating an acoustic excitation signal to vibrate a cylindrical enclosure (1) i.e. fuel rod, and radioactive tracer gas (2) e.g. helium, and detecting an acoustic characteristics response signal of vibration of the enclosure and gas. An electrical system (8) excites the transducer and analyzes the response signal. Transmission frequency bands of the signals have a width of 25 percentage of f0 that is a free vibration frequency of a wall (10) at which the sensor is coupled, during measurement of a gas physical parameter e.g. molar mass. An independent claim is also included for a method of measuring a physical parameter of a gas in an enclosure.

Description

technical field [0001] The invention relates to a method as claimed in the subject-matter of claim 1 . It also relates to an assembly according to the subject-matter of claim 7 . Background technique [0002] It is desirable to obtain pressure values ​​inside cylindrical enclosures filled with gaseous mixtures, for example to measure the internal pressure of fuel rods in nuclear power plant reactors. [0003] It is also desirable to be able to determine the molar masses of the aforementioned gas mixtures. [0004] In order to obtain this type of information, it is generally necessary to use destructive methods, such as piercing the housing. [0005] Methods based on the presence of a radioactive tracer gas (eg Krypton 85) can also be utilized. However, these methods are not available when one wishes to measure the pressure within tubes that are part of a bundle of tubes containing the same radiotracer. [0006] From FR2739925 we know that acoustic sensors include: [00...

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): G01N29/036G01N29/28G21C17/10G01L11/06
CPCG21C17/102G21Y2004/30G21C17/017G01N2291/2634G01N2291/02872G21Y2004/40G01N29/032G01N29/222G01N2291/102G21Y2002/304G01L11/04G01L9/0001G01N2291/021G01N29/036G01N2291/101G21Y2002/204G01N2291/02854Y02E30/30G01L11/06G01N29/28G21C17/10
Inventor D·巴龙J-Y·费朗迪G·莱韦克D·劳克斯E·罗森克兰茨
Owner CENT NAT DE LA RECH SCI (C N R S)
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