Active attenuator and method

Details Active attenuator and method Active attenuator and method

F - Mech Eng,Light,Heat,Weapons

16

L

341/39

F16L 55/04 (2006.01) F17D 1/20 (2006.01) G10K 11/16 (2006.01)

Patent

CA 1299271

ABSTRACT OF THE DISCLOSURE An active attenuation system is provided for attenuating the pressure pulses in a liquid flowing in a pipe. The system includes an actuator for introducing nulling pressure pulses into the pipeline having the same frequency, but phase reversed to provide opposite amplitude of the pressure pulses to be attenuated. A plurality of pressure sensors are disposed in the pipe to sense the pressure pulses to be attenuated and these sensors are connected to a pressure transducer amplifier system which, in turn, is electrically connected to a control monitor which adaptively models the responses and continuously adjusts its output to a power amplifier which, in turn, signals the actuator to produce nulling pulses at the desired frequency and amplitude to attenuate the pressure pulses at a desired location, i.e. headbox or pipeline termination, in the liquid flowing through the pipe.

576656

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