Flow meter
    3.
    发明授权

    公开(公告)号:US3555900A

    公开(公告)日:1971-01-19

    申请号:US3555900D

    申请日:1968-12-05

    Applicant: GEN ELECTRIC

    CPC classification number: G01F1/80 G01F1/115

    Abstract: A MASS FLOWMETER SYSTEM OF THE ANGULAR MOMENTUM TYPE COMPRISING SWIRL GENERATING MEANS, A SPEED TURBINE AND A REACTION TURBINE RESTRAINED BY AN ELECTROMAGNETIC TORQUE MOTOR. THE REACTION TURBINE IS MAINTAINED IN A BALANCED CONDITION BY A CONTROL LOOP INTO WHICH TURBINE SPEED AND POSITION SIGNALS ARE INTRODUCED TO CONTROL THE TORQUE MOTOR CURRENT AND TORQUE. IN THIS MANNER AUTOMATIC COMPENSATION FOR CHANGES IN SWIRL VELOCITY IS OBTAINED PERMITTING DIRECT MEASUREMENT OF MASS FLOW RATE WITHOUT NEED FOR MAINTAINING CONSTANT SWIRL VELOCITY. BOTH ANALOG AND DIGITAL CONTROL AND INDICATING SYSTEMS ARE DISCLOSED.

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