Ultrasonic cavitating apparatus and ultrasonic doppler flow measurement system
AssigneesKabushiki Kaisha Toshiba, The Tokyo Electric Power Company, Incorporated
InventorsMichio Sato, Tadashi Narabayashi, Michitsugu Mori, Kenichi Tezuka, Hideaki Tezuka
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Abstract
Disclosed is an ultrasonic Doppler flow measurment system that achieves flow measurement regardless of the temperature of a fluid. A temperature sensor 7 is combined with a pipe 1 to measure the temperature of a fluid 2. A controller 9 calculates a frequency that will cause cavitation when an ultrasonic transducer 4 exerts an ultrasonic vibration on the fluid 2 on the basis of a temperature measured by the temperature sensor 7 and controls a sinusoidal oscillator 6.
Claims13
An ultrasonic cavitating apparatus comprising:
- at least one cavitating ultrasonic transducer adapted to apply ultrasonic vibrations to a fluid flowing through a pipe to cause cavitation in the fluid;
- at least one variable-frequency ultrasonic oscillator adapted to apply an electric power to the ultrasonic transducer to drive the same;
- a temperature sensor adapted to measure a temperature of the fluid flowing through the pipe;
- and
- a controller configured to determine a frequency suitable for causing cavitation in the fluid flowing through the pipe based on the temperature measured by the temperature sensor, and configured to control the ultrasonic oscillator for driving the cavitating ultrasonic transducer so as to generate an ultrasonic vibration of the frequency suitable for causing cavitation.
Dependencies are inferred from the claim text.