Keywords
Citation
Rigelsford, J. (2002), "An Electromagnetic Flow Control Valve", Sensor Review, Vol. 22 No. 3. https://doi.org/10.1108/sr.2002.08722cad.014
Publisher
:Emerald Group Publishing Limited
Copyright © 2002, MCB UP Limited
An Electromagnetic Flow Control Valve
Keywords: Sensors, Measurement, Distance measurement
An Electromagnetic Flow Control Valve
Applicant: R.D. Nathenson, USAPatent number: US6,321,766Publication date: 27 November 2001Title: Electromagnetic Flow Control Valve for a Liquid Metal with Built-in Flow Measurement
This patent describes an electromagnetic flow control device that does not require high frequency alternating current for operation and does not require any kind of special internal passage member to direct the flow.
The electromagnetic flow control valve has a flow measurement arrangement that includes a tube and a plurality of electric coils. The tube defines a central passageway adapted to permit an electrically conductive liquid to pass through it. The plurality of electric coils are formed of electrically conductive wire and positioned about the circumference of the tube. Therefore, when an electric current is passed through the wires of the coils a magnetic field is formed in the passageway and retards a flow of electrically conductive liquid through the central passageway. Built-in galvanomagnetic probes can be used to measure changes in the applied magnetic field in order to determine the rate of flow of liquid metal through the device.