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    • 42. 发明授权
    • Remote diagnostics in a process control network having distributed
control functions
    • 具有分布式控制功能的过程控制网络中的远程诊断
    • US6014612A
    • 2000-01-11
    • US944088
    • 1997-10-02
    • Brent H. LarsonHarry A. BurnsLarry K. Brown
    • Brent H. LarsonHarry A. BurnsLarry K. Brown
    • G06F15/177G05B23/02G06F11/22G06F11/30G05B11/01G06F13/14G21C17/00
    • G06F11/22
    • A diagnostic system is adapted to perform device and process diagnostics in a process control network having a plurality of process control devices communicatively linked over a bus, wherein each of the devices is capable of preforming a process control function and of communicating over the bus using scheduled periodic communications. The diagnostic system is disposed in a first one of the devices and includes a signal generator that produces a diagnostic control signal, a communicator configured to deliver the diagnostic control signal to a second one of the devices using scheduled periodic communications, and an output signal receiver adapted to receive an output signal developed by the second device in response to the diagnostic control signal. The diagnostic system may use the received output signal to perform diagnostics or may send this signal to a host device for diagnostic analysis.
    • 诊断系统适于在具有通过总线通信地链接的多个过程控制设备的过程控制网络中执行设备和过程诊断,其中每个设备能够执行过程控制功能并且通过总线使用调度 定期沟通。 所述诊断系统设置在所述装置的第一装置中,并且包括产生诊断控制信号的信号发生器,被配置为使用调度的周期性通信将所述诊断控制信号传送到所述装置中的第二装置的通信器,以及输出信号接收器 适于响应于诊断控制信号接收由第二设备开发的输出信号。 诊断系统可以使用接收到的输出信号来执行诊断,或者可以将该信号发送到主机设备进行诊断分析。
    • 43. 发明授权
    • Bidirectional fluid control valve
    • 双向流体控制阀
    • US06003551A
    • 1999-12-21
    • US676774
    • 1996-07-08
    • William E. Wears
    • William E. Wears
    • F16K1/06F16K1/42F16K11/065
    • F16K1/06F16K1/42Y10T137/86759
    • A bidirectional flow fluid control valve having increased flow capacity in a flow down condition, a flow up condition or, preferably, in both flow conditions. The valve has a curved surface on the top portion of the valve plug or on the inner annular surface of the body web below the valve seat. Preferably, the valve has curved surfaces in both locations. A variety of radii of curvature at those locations have been found to increase flow capacity. Adjacent the curved portions of the valve plug surface or the body web inner annular surface, uncurved portions may be employed.
    • 一种双向流体流体控制阀,其在流动状态,流动状态或优选地在两种流动条件下具有增加的流量。 阀在阀塞的顶部具有弯曲表面,或在阀座下面的主体腹板的内环形表面上。 优选地,阀在两个位置都具有弯曲表面。 已经发现在那些位置处的各种曲率半径增加流量。 邻近阀塞表面或者主体腹板内环形表面的弯曲部分,可以采用未弯曲的部分。
    • 44. 发明授权
    • Tension-spring return rotary valve actuator
    • 张力弹簧复位旋转阀执行机构
    • US6000675A
    • 1999-12-14
    • US845312
    • 1997-04-25
    • Philip Wayne Eggleston
    • Philip Wayne Eggleston
    • F16K31/165F16K31/44F16K31/126
    • F16K31/1655
    • A rotary valve actuator with movable actuator linkage maintained in a constant "pull-pull" tension, includes a sliding canister, rotatable lever, and a return spring substantially aligned in-line with each other. The linear motion of the canister in response to an expanding and contracting pressurized bladder is converted through chain linkage into rotary lever motion. The return spring is connected through respective chain linkage to the lever so the pulling tension of the spring/lever linkage rotates the lever and maintains tension on both chain linkages. Adjustable travel stops are provided. In an alternate embodiment the return spring chain linkage is configured at right angles to the linear movement of the canister.
    • 具有保持在恒定的“拉拉”张力的可移动致动器连杆的旋转阀致动器包括滑动罐,可旋转杆和基本上彼此对齐的回弹弹簧。 响应于膨胀和收缩的加压气囊的罐的直线运动通过链节转换成旋转杆运动。 复位弹簧通过相应的链节连接到杠杆,因此弹簧/杠杆连杆的拉力使杠杆转动并保持两个链节上的张力。 提供可调节的行程站。 在替代实施例中,复位弹簧链节构造成与罐的线性运动成直角。
    • 47. 发明授权
    • Process controller with interchangeable individual I/O units
    • 具有可互换的单独I / O单元的过程控制器
    • US5901323A
    • 1999-05-04
    • US176330
    • 1994-01-03
    • Jon B. MillikenRichard J. VanderahDennis G. Sickels
    • Jon B. MillikenRichard J. VanderahDennis G. Sickels
    • G05B15/02G05B19/042G06F13/00
    • G05B19/0423G05B2219/25096G05B2219/25296G05B2219/25301
    • A controller of the type used in process control includes a plurality of modular I/O units. The I/O units includes I/O circuits which may be of four basic types: digital input circuits, digital output circuit, analog input circuits and analog output circuits. Each of the I/O circuits has a code generator that generates a binary code indicating the type of I/O circuit. The controller is microprocessor-controlled and periodically communicates with the I/O circuits and determines the type of each I/O unit based upon the binary code. The I/O units may be temperature-compensated based upon the temperature within the housing of the controller, and other integrity checks may be performed on the I/O units. The controller also has a change module routine which allows the I/O units to be installed or removed during operation of the controller.
    • 用于过程控制的类型的控制器包括多个模块化I / O单元。 I / O单元包括可能有四种基本类型的I / O电路:数字输入电路,数字输出电路,模拟输入电路和模拟输出电路。 每个I / O电路都具有代码发生器,其产生指示I / O电路类型的二进制代码。 控制器由微处理器控制,周期性地与I / O电路进行通信,并根据二进制码确定每个I / O单元的类型。 I / O单元可以基于控制器壳体内的温度进行温度补偿,并且可以在I / O单元上执行其他完整性检查。 控制器还具有更改模块程序,允许在控制器运行期间安装或卸下I / O单元。
    • 49. 发明授权
    • Gas pressure regulator
    • 气压调节器
    • US5740833A
    • 1998-04-21
    • US414524
    • 1995-03-31
    • Charles M. OldsJohn D. HostutlerMark E. HoodDavid W. Lambeth
    • Charles M. OldsJohn D. HostutlerMark E. HoodDavid W. Lambeth
    • G05D16/06G05D16/02
    • G05D16/0683G05D16/0602Y10T137/7795Y10T137/783
    • A two stage gas pressure regulator with a body housing having a gas inlet and a gas outlet, and a common interior wall dividing the body housing into two chambers forming two pressure reducing stages. Respective intersecting fluid passageways through the common interior wall communicate the first stage to the second stage and provide a gauge pressure tap on the body housing, the intersecting passageways meeting at an intersection point within the common interior wall. Respective diaphragms are provided for each stage, and a cover has a vent venting the volume defined between the cover and the second stage diaphragm. A small passageway is provided in a common cover wall between the two stages, the small passageway being sized to suitably vent both cover portions above the respective diaphragms through the vent while eliminating overpressurization of the second stage in the event of pressure regulating failure of the first stage. A diaphragm actuated lever arm includes a slotted end with the slot matching a stepped gas flow controlling disc. The disc is stepped to match the lever end slot so as to trap the disc within the lever slotted end. The inlet orifice in one or both of the regulator stages can be formed by casting and without further machining or additional orifice components.
    • 具有主体壳体的两级气体压力调节器,其具有气体入口和气体出口,以及将主体壳体分成形成两个减压阶段的两个室的公共内壁。 通过公共内壁的相交的相交流体通道将第一阶段连接到第二阶段,并且在主体外壳上提供表压压力分接头,相交的通道在公共内壁内的交叉点处相交。 为每个级提供相应的隔膜,并且盖具有排出盖和第二级隔膜之间限定的体积的通风口。 小通道设置在两级之间的公共盖壁上,小通道的尺寸适于通过排气孔适当地排出相应隔膜上方的两个盖部分,同时在第一段压力调节失效的情况下消除第二级的过压 阶段。 隔膜致动杠杆臂包括开槽端,其中狭槽与阶梯式气体流量控制盘匹配。 盘被阶梯以匹配杆端槽,以将盘捕获在杠杆开槽端内。 一个或两个调节器级中的入口孔可以通过铸造形成,而不需要进一步加工或附加的孔组件。