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

Method and apparatus for monitoring measurement state of coriolis mass flowmeter

A technology of mass flowmeter and Coriolis, applied in measuring devices, measuring flow/mass flow, testing/calibrating devices, etc., can solve the problems of wasting time and manpower, avoid disassembly costs, save manpower, improve The effect of online monitoring efficiency

Active Publication Date: 2015-10-14
XIAN DONGFENG MACHINERY & ELECTRONICS
View PDF9 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to: propose a brand-new method and device for monitoring the measurement state of a Coriolis mass flowmeter, which solves the technical problems of wasting time, manpower, material resources and financial resources caused by traditional off-line monitoring

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 and apparatus for monitoring measurement state of coriolis mass flowmeter
  • Method and apparatus for monitoring measurement state of coriolis mass flowmeter
  • Method and apparatus for monitoring measurement state of coriolis mass flowmeter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] The basic principle of mass flow meter measurement is the Coriolis effect of a liquid in a vibrating tube. In a typical mass flow meter application, the driving coil 106 of the vibrating tube itself and the driving permanent magnet 206 interact to apply a driving force to the vibrating tube, so that the vibrating tube vibrates at a certain frequency. When no liquid flows through the vibrating tube, all points on the vibrating tube vibrate with the same phase, such as Figure 2a . When a liquid flows through the vibrating tube, the vibrating tube is subjected to the Coriolis force generated by the liquid ( Figure 2b The effect of Fc) in , the Coriolis force makes each point of the vibrating tube produce different phases, such as Figure 2b . The Coriolis force on the AC segment and the BD segment is the same in magnitude and opposite in direction (such as Figure 2b Fc direction shown in). The left detection coil 103 and the right detection coil 205 are placed on t...

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

A method and apparatus for monitoring a measurement state of a Coriolis mass flowmeter. An equivalent driving force F is applied to replace a Coriolis force Fc generated when a liquid passes through a vibration pipeline (101, 201), it is ensured that an acting effect of the equivalent driving force F is the same as an acting effect of the Coriolis force Fc, a phase difference is generated at two sides of the sensor vibration pipeline (101, 201) without circulating the liquid, and a flow transmitter displays, by means of continuous detection and calculation, a mass flow value when the liquid is circulated. By changing the value of the equivalent driving force F, and comparing a flow value qm' displayed by the transmitter and an assumed flow value qm to obtain a difference, the working state of the flowmeter can be monitored without circulating the liquid. The apparatus comprises an apparatus for applying the equivalent driving force F, the acting effect of the equivalent driving force F is the same as the acting effect of the Coriolis force Fc, and the applying position and the value of the equivalent driving force F satisfy a torque condition 2F•d=T.

Description

technical field [0001] The invention relates to the monitoring field of flow meters, in particular to a measurement state monitoring method and device of a Coriolis mass flow meter. Background technique [0002] A Coriolis mass flowmeter (hereinafter referred to as a mass flowmeter) is an instrument that can directly measure the mass flow of a liquid, and is currently widely used in various fields of national production. In order to ensure the accuracy and reliability of the measurement data of the mass flowmeter, the common practice is to perform periodic calibration. The "Measurement Verification Regulations of the People's Republic of China" stipulates that the verification cycle of the mass flowmeter is 0.5 years / time to 2 years / time , Whether the actual measurement status of the qualified instrument in the actual engineering application can be guaranteed, only after the validity period of the verification is over, can it be accurately judged after returning to the verif...

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): G01F25/00
CPCG01F25/00G01F1/8436G01F25/10
Inventor 张鹏郁周王瑞任建新尹忠奇
Owner XIAN DONGFENG MACHINERY & ELECTRONICS
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