An anti-seismic digital vortex flowmeter

Abstract

The invention provides an anti-seismic digital vortex flowmeter, which includes a probe assembly for inserting into a pipeline to measure the flowing fluid, a connecting rod, a shell flange for connecting the detection device with the pipeline, and a A converter connection flange for connecting a converter to a detection device, a probe assembly is installed on one end of a connecting rod by welding, and relates to the field of electromagnetic flowmeters. The probe assembly of the anti-seismic digital vortex flowmeter probe assembly is made of 304 stainless steel, which is combined with two measuring electrodes to form a 3-electrode mode. The measurement of the plug-in flowmeter is unstable, and it is easily affected by the magnetization of the electrodes, resulting in a decrease in measurement accuracy. Magnetic field interference affects the measurement accuracy by affecting the signal strength. Affected by the installation process and the complex environment, it is difficult for the motor signal line to remain parallel to the magnetic force line for a long time. The flowmeter cannot maintain a stable zero point.

Description

technical field [0001] The invention relates to the technical field of electromagnetic flowmeters, in particular to an anti-shock digital vortex flowmeter. Background technique [0002] The measurement principle of the electromagnetic flowmeter is based on Faraday's law of electromagnetic induction. The measuring tube of the flowmeter is a short non-magnetic alloy short tube lined with insulating material. Two electrodes pass through the tube wall along the tube diameter and are fixed on the tube. It is basically flush with the inner surface of the lining. When the excitation coil is excited by a bidirectional square wave pulse, a working magnetic field with a magnetic flux density of B will be generated in the direction perpendicular to the axis of the measuring tube. At this time, if a fluid with a certain conductivity flows through the measuring tube, the electromotive force E will be induced by cutting the magnetic field line. The electromotive force E is proportional to...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides an anti-seismic digital vortex flowmeter, which solves the problem of unstable measurement of the general insertion flowmeter, which is easily affected by the magnetization of the electrodes, resulting in reduced measurement accuracy and magnetic field interference. The signal strength affects the measurement accuracy. Affected by the installation process and complex environment, it is difficult for the motor signal line to remain parallel to the magnetic field line for a long time, and the flowmeter cannot maintain a stable zero point.

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