公开(公告)号：EP1574924A1

公开(公告)日：2005-09-14

申请号：EP03780914.2

申请日：2003-12-18

申请人： FUJIKIN INCORPORATED ,  OHMI, Tadahiro

发明人： Ohmi, Tadahiro ,  Ikeda, Nobukazu c/o Fujikin Incorporated ,  Nishimo, Kouji c/o Fujikin Incorporated ,  Nagase, Masaaki c/o Fujikin Incorporated ,  Dohi, Ryousuke c/o Fujikin Incorporated ,  Nishimura, Ryutaro c/o Fujikin Incorporated

IPC分类号： G05D16/02

CPC分类号： F16K47/02 ,  F16K47/023 ,  F16L55/043 ,  Y10T137/0324 ,  Y10T137/0379 ,  Y10T137/0396 ,  Y10T137/7761 ,  Y10T137/86389 ,  Y10T137/86461

摘要： A fluid passage is emergently-closed in a short time without causing a water hammer by an extremely simple device and operation. A water hammerless closing device includes an actuator operated valve provided in a fluid passage, an electro-pneumatic conversion device for supplying a 2-step actuator operating pressure Pa to an actuator operated-type valve, a vibration sensor removably secured to the pipe passage on the upstream side of the actuator operated-type valve, and a tuning box receiving a vibration detection signal Pr from the vibration sensor and delivering a control signal Sc to the electro-pneumatic conversion device for controlling the step operating pressure Ps'of the 2-step actuator operating pressure Pa so that, with the control signal Sc being regulated, the electro-pneumatic conversion device outputs the 2-step actuator operating pressure Pa with the step operating pressure Ps'capable of bringing the vibration detection signal Pr substantially to zero.

摘要翻译： 流体通道在短时间内紧密关闭，而不会通过非常简单的装置和操作造成水锤。 无水锤关闭装置包括设置在流体通道中的致动器操作阀，用于向致动器操作型阀提供2级致动器操作压力Pa的电动气动转换装置，可拆卸地固定到管道上的振动传感器 执行器操作型阀的上游侧和调谐箱，其从振动传感器接收振动检测信号Pr，并将控制信号Sc传送到电动气动转换装置，以控制2- 步进执行器操作压力Pa，使得在控制信号Sc被调节的情况下，电 - 气转换装置输出具有使振动检测信号Pr基本上为零的阶梯操作压力Ps'的两步致动器操作压力Pa。