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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
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.
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公开(公告)号：US20160319940A1
公开(公告)日：2016-11-03
申请号：US15108685
申请日：2015-08-27
Applicant: KITZ CORPORATION
Inventor： Masazumi FUNATO , Masahiro KAZAMA
IPC: F16K5/06
CPC classification number: F16K5/06 , F16K5/0678 , F16K5/202
Abstract: A trunnion-type ball valve including a seat retainer (14) attaching a ball seat(s) to at least one side of a ball (12) having a through hole (12a) provided in a body (11). The ball is turnably provided via a stem (13), and the ball seat is attached in a protrusion-prevented and free state in an attachment groove formed in the seat retainer. An excessive pressure due to an abnormal pressure rise in a cavity upon full close or upon full open is configured to be relieved into a flow channel via a communication part provided between an inner peripheral surface of the ball seat and the attachment groove by moving the seat retainer in a direction opposite to the ball by self-tension utilizing the pressure and pushing-out the ball seat to a ball-side by the excessive pressure flowed into a rear-surface side of the ball seat in the attachment groove.
Abstract translation: 一种耳轴式球阀，其包括将球座附接到具有设置在主体（11）中的通孔（12a）的球（12）的至少一侧的座椅保持器（14）。 该球通过杆（13）可转动地设置，并且球座以形成在座椅保持器中的安装槽中以突起防止和自由的状态附接。 由于在完全关闭或全开时空腔中的异常压力升高引起的过大的压力被配置成经由设置在球座的内周表面和安装槽之间的连通部件移动到流动通道中， 通过利用压力自动张紧的方向保持在与球相反的方向上，并通过流入到安装槽中的球座的后表面侧的过大的压力将球座推出到球侧。
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公开(公告)号：US20190154161A1
公开(公告)日：2019-05-23
申请号：US15571362
申请日：2016-05-13
Applicant: KITZ CORPORATION
Inventor： Masahiro KAZAMA , Masazumi FUNATO
Abstract: A trunnion-type ball valve, a valve seal structure, and a valve packing in which, a seal surface pressure of a tip outer peripheral region is improved. A ball (3) provided inside a body (2) is rotatably provided via upper and lower stems (4 and 5) and is sealed with a ball seat (6). The trunnion-type ball valve has a packing attached between an outer periphery step part provided at a rear part of the ball seat and the body and a pressing mechanism by which the packing is pressed to a ball direction, and is provided with a contact surface to be contacted with a step part surface of the outer periphery step part on a tip outer diameter side of the packing and a space provided between the packing and the step part surface of the outer periphery step part on a tip inner diameter side of the packing.
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