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Fluent metal electrical flow meter

An electromagnetic flowmeter and liquid metal technology, which is applied in the application of electromagnetic flowmeters to detect fluid flow, volume/mass flow generated by electromagnetic effects, etc. Measurement accuracy, the effect of reducing the risk of leakage

Inactive Publication Date: 2009-09-30
INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the electromagnetic flowmeter has the above-mentioned excellent characteristics, there are still some shortcomings, so that it is limited in use.
Since the measuring tube is limited by the temperature of the lining material and the electrode insulation material, the existing liquid metal electromagnetic flowmeter cannot be used to measure high temperature and high pressure liquid metal

Method used

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  • Fluent metal electrical flow meter

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Embodiment Construction

[0018] The liquid metal electromagnetic flowmeter includes a metal pipe 1, and magnetic steel 2 is symmetrically arranged on both sides of the metal pipe 1. When the liquid metal medium in the metal pipe 1 flows, an induced electromotive force is generated, and the left and right sides of the outer wall of the metal pipe 1 The two symmetrical potentials on both sides, the highest and the lowest, point A and point B lead out the wires 3 electrically connected to them, and connect to the electrical signal conversion and amplification processing system. The high-sensitivity signal conversion and amplification processing system is to amplify and convert the millivolt-level voltage signal proportional to the flow rate output by the electromagnetic flow transmitter into a standard DC current, voltage or pulse signal output that can be received by industrial instruments, which is easy to communicate with the instrument And the regulator cooperates to realize the indication, recording ...

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Abstract

The present invention discloses a fluent metal electrical flow meter, including a metal pipe two sides of which are provided with a magnetic steel separately and symmetrically, when the fluent metal medium of the metal pipe is flowing, the metal pipe will generate an induced electromotive force, conductors is fetched from and is electrically connected with various electric potential face of the metal pipe lateral wall, and the access electrical signal transforms, amplifies and processes a system. The high-temperature magnetic steel made of special alloy is capable of bearing a higher temperature; a measuring point is welded on a cross section of the fluent metal pipeline external wall; and the actual flux size of the fluent metal is obtained by the magnetic induction electromotive force of the measuring point through a signal processing system. The fluent metal electrical flow meter may be used for fluent metal flow measurement of a industry field high temperature and high voltage circumstance widely.

Description

Technical field: [0001] The invention relates to a liquid metal metering device, in particular to a liquid metal electromagnetic flowmeter applicable to measuring high temperature and high pressure liquid metal flow. Background technique: [0002] Since the first domestic industrial application of electromagnetic flowmeter in the late 1950s, it has been used and developed rapidly in flow measurement in the 1970s and 1980s. The working principle of the electromagnetic flowmeter is based on Faraday's law of electromagnetic induction, that is, the measured medium flows perpendicular to the direction of the magnetic force line, so an induced electromotive force is generated in the direction perpendicular to the medium flow and the magnetic force line, and the induced electromotive force is related to the measured medium flow (flow velocity ), then amplify and convert the output millivolt-level voltage signal proportional to the flow rate into a standard DC current, voltage or pu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/58
Inventor 吕若君朱志强陈红丽黄群英秋穗正吴宜灿
Owner INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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