Multiphase flow real-time pipeline monitoring method and monitoring instrument

• Main Authors: DU XINZE, LIU WEI, LI ZAICHUN, MA ZHIWEI
• Format: Patent
• Language: Chinese; English
• Published: 01.08.2023
• Subjects: INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT; MEASURING; MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK; MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL; METERING BY VOLUME; PHYSICS; TESTING

The invention provides a multiphase flow real-time pipeline monitoring method and monitoring instrument, and the monitoring method comprises the following steps: a sensor probe is connected with a main control circuit, and the main control circuit is connected with a high-frequency current; the high-frequency current generates an alternating electromagnetic field through the electromagnetic excitation circuit, and induces a reverse eddy current with the same frequency as the high-frequency current through the ultrasonic excitation sheet; the eddy current generates Lorentz force under the action of a static bias magnetic field to trigger the mass point of the ultrasonic excitation sheet to generate high-frequency vibration and generate an electromagnetic ultrasonic signal with the same frequency as the high-frequency current; the electromagnetic ultrasonic signal is emitted into a pipeline to be detected along an incident angle; the central processor calculates pipeline flow and flow velocity according to the