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    • 38. 发明授权
    • Control device with improved stem connector and display
    • 具有改进的杆连接器和显示器的控制装置
    • US09033308B2
    • 2015-05-19
    • US13165067
    • 2011-06-21
    • Joerg KiesbauerHolger EckholzEugen NebelDirk Hoffmann
    • Joerg KiesbauerHolger EckholzEugen NebelDirk Hoffmann
    • F16K31/126F16K1/48F16K51/00
    • F16K31/1262F16K1/48F16K51/00Y10T403/5766
    • In a control device for a technical processing plant, a pneumatically driven actuator having an actuator stem is provided together with a valve operated by the actuator, the valve having a valve stem. A valve element is attached to the valve stem. A stem connector connects the two stems to each other for a forced transmission of axial actuating movements and for modifying an axial distance between adjacent ends of the valve stem and the actuator stem to adjust a total axial length of the two stems. The stem connector comprises two half-shells connected to each other, and two positioning devices are provided for a friction-locking coupling of the half-shells to the respective ends. At least one of the positioning devices is designed to modify an axial attachment position of the half-shells along one of the stems.
    • 在用于技术处理设备的控制装置中,具有致动器杆的气动致动器与由致动器操作的阀一起提供,该阀具有阀杆。 阀元件连接到阀杆。 杆连接器将两个杆彼此连接,用于强制传递轴向致动运动,并且用于改变阀杆和致动器杆的相邻端之间的轴向距离,以调节两个杆的总轴向长度。 杆连接器包括彼此连接的两个半壳,并且设置两个定位装置用于半壳与相应​​端部的摩擦锁定联接。 定位装置中的至少一个被设计成沿着一个杆来改变半壳的轴向附接位置。
    • 40. 发明申请
    • METHOD OF CAVITATION/FLASHING DETECTION IN OR NEAR A PROCESS CONTROL VALVE
    • 在过程控制阀内或附近进行保存/闪烁检测的方法
    • US20150059886A1
    • 2015-03-05
    • US14011469
    • 2013-08-27
    • Fisher Controls International LLC
    • Shawn W. Anderson
    • G01N13/00G01N29/44G01N29/14F16K51/00G01N29/02
    • G01N13/00F16K37/0083F16K37/0091F16K51/00G01N29/02G01N29/14G01N29/4409G01N2291/022G01N2291/044Y10T137/8158
    • A system and apparatus for detecting and monitoring cavitation inside a flow control device, such as a control valve, includes an acoustic emission sensor coupled to the flow control device in a manner to acquire acoustic signals caused by cavitation. A processor receives acoustic information from the acoustic emission sensor. The processor selectively identifies cavitation events from the acoustic information that meet certain predefined criteria. Cavitation levels are monitored based on at least one of a rate of cavitation events and intensity of individual cavitation events. The cavitation levels may be used to identify the presence of cavitation in the flow control device, to track accumulated cavitation in the flow control device, and/or to identify significant changes in the cavitation levels over time. This information may be used to reduce cavitation, estimate repair and maintenance, and/or monitor performance of the flow control device.
    • 用于检测和监测诸如控制阀之类的流量控制装置内的空化的系统和装置包括以获得由空化引起的声信号的方式耦合到流量控制装置的声发射传感器。 处理器从声发射传感器接收声信息。 处理器从满足某些预定准则的声学信息中选择性地识别空化事件。 基于气蚀事件的速率和单个气蚀事件的强度中的至少一个来监测气蚀水平。 空化水平可以用于识别流量控制装置中的气蚀的存在,以跟踪流量控制装置中的累积空化,和/或识别随着时间的空化水平的显着变化。 该信息可以用于减少气蚀,估计维修和/或监视流量控制装置的性能。