公开(公告)号：US20210123543A1

公开(公告)日：2021-04-29

申请号：US15734673

申请日：2019-06-06

Applicant: KITZ CORPORATION

Inventor： Yu INOUE ,  Masahiro KAZAMA ,  Isao NISHIZAWA

IPC: F16K37/00 ,  G05B23/02

Abstract: The present invention is to provide a valve state grasping system that can be easily retrofitted to any of various existing or operating valves (rotary valves) and actuators, and in particular, even facilities to which commercial power is not supplied, and allows detailed and accurate state grasping and diagnosis or failure prediction for the valve or actuator. The valve state grasping system is configured to perform, based on angular velocity data of a valve stem which opens and closes the valve, state monitoring, diagnosis, and life prediction of this valve. To the valve stem, a monitoring unit having at least a semiconductor-type gyro sensor is attachably and detachably fixed. The angular velocity data includes angular velocity data acquired from this monitoring unit in accordance with a rotational motion of a valve body from being fully open or fully closed to fully closed or fully open.

公开(公告)号：US20230194016A1

公开(公告)日：2023-06-22

申请号：US18102957

申请日：2023-01-30

Applicant: KITZ CORPORATION

Inventor： Yu INOUE ,  Isao NISHIZAWA

IPC: F16K37/00 ,  G05B23/02

CPC classification number: F16K37/0025 ,  G05B23/02 ,  F16K37/0041 ,  G05B23/0283

Abstract: The present invention is to provide a valve state grasping system that can be easily retrofitted to any of various existing or operating valves (rotary valves) and actuators, and in particular, even facilities to which commercial power is not supplied, and allows detailed and accurate state grasping and diagnosis or failure prediction for the valve or actuator. The valve state grasping system is configured to perform, based on angular velocity data of a valve stem which opens and closes the valve, state monitoring, diagnosis, and life prediction of this valve. To the valve stem, a monitoring unit having at least a semiconductor-type gyro sensor is attachably and detachably fixed. The angular velocity data includes angular velocity data acquired from this monitoring unit in accordance with a rotational motion of a valve body from being fully open or fully closed to fully closed or fully open.