Microprocessor-based control and diagnostic system for motor operated
valves
    1.
    发明授权
    Microprocessor-based control and diagnostic system for motor operated valves 失效
    基于微处理器的电动阀控制和诊断系统

    公开(公告)号:US4816987A

    公开(公告)日:1989-03-28

    申请号:US37414

    申请日:1987-04-13

    摘要: A microprocessor-based valve motor control system which provides control, predictive control and diagnostic functions for a motor operated valve. A microprocessor periodically tests the status of the motor operated valve, and turns off the valve's motor if certain predefined criteria for the valve stem position and the valve stem load are satisfied. The periodic testing by the microprocessor includes the testing of a position criterion (comparing both the current valve stem position signal and a predicted stem position with a preselected target position); and a stem load criterion (comparing both the current valve stem load and a predicted stem load with a preselected maximum desirable stem load).When the control system is being used with a gate valve for fully opening and fully closing a valve, the control logic can use either a predicted position criterion or a predicted stem load criterion to determine when to turn off the valve motor. When the control system is being used with a flow control valve, the use of a predicted position criterion minimizes overshoot problems which cause the motor to be reversed one or more times while moving to a target position.Motor overload protection is provided by periodically measuring the actual load on the motor and turning off the motor if the measured motor load exceeds any one of a plurality of preselected maximum motor load values for a corresponding period of time.

    摘要翻译: 一种基于微处理器的阀门电机控制系统,为电动阀提供控制,预测控制和诊断功能。 如果满足阀杆位置和阀杆负载的某些预定标准,微处理器会定期测试电动阀的状态,并关闭阀的电机。 微处理器的定期测试包括测试位置标准(将当前阀杆位置信号和预测的杆位置与预选的目标位置进行比较); 和阀杆负载标准(将当前阀杆负载和预测的阀杆负载与预选的最大期望阀杆负载进行比较)。 当控制系统与门阀一起使用以完全打开和完全关闭阀门时,控制逻辑可以使用预测位置标准或预测阀杆负载标准来确定何时关闭阀门电动机。 当控制系统与流量控制阀一起使用时,使用预测的位置标准将过冲问题最小化,这导致在移动到目标位置时使马达反转一次或多次的过冲问题。 电动机过载保护是通过定期测量电动机的实际负载并关闭电动机,如果测量的电动机负载超过了多个预先选定的最大电动机负载值中的任何一个相应的时间段。

    Sliding lance guide flexible lance system
    2.
    发明授权
    Sliding lance guide flexible lance system 失效
    滑动导杆柔性喷枪系统

    公开(公告)号:US5341406A

    公开(公告)日:1994-08-23

    申请号:US738469

    申请日:1991-07-31

    摘要: A sliding lance guide flexible lance system (10) is attached to a hand hole (12) of a nuclear power plant steam generator by means of flange (14) of tilt module (16). A rail (18) extends from the tilt module (16) to a support stand (20) and is attached to the stand (20) by a pivot (22) so that the rail (18) is free to rotate with the tilt module (16). A tilt drive motor (24) is attached to the tilt module (16). A flexible lance (26) extends into the rail (18) for extension through a lance guide shoe (27). The lance guide shoe (27) deflects the lance from the rail (18) into the tube gap of the steam generator. The lance guide shoe (27) is slideably mounted in the rail (18), and is attached to a lance guide belt (30), which extends within and along the rail (18). Similarly, the flexible lance (26) extends within and along the rail (18). A lance guide belt sprocket drive (40) is mounted on support (33) to engage the lance guide belt (30). A similar flexible lance sprocket drive (42) is mounted on the support (33) to engage the flexible lance (26).

    摘要翻译: 滑动导杆柔性喷枪系统(10)通过倾斜模块(16)的凸缘(14)附接到核电站蒸汽发生器的手孔(12)。 轨道(18)从倾斜模块(16)延伸到支撑架(20),并通过枢轴(22)附接到支架(20),使得轨道(18)随倾斜模块自由旋转 (16)。 倾斜驱动电机(24)附接到倾斜模块(16)。 柔性喷枪(26)延伸到轨道(18)中,用于通过喷枪导板(27)延伸。 喷枪引导靴(27)将喷枪从导轨(18)偏转到蒸汽发生器的管隙中。 喷枪引导靴(27)可滑动地安装在轨道(18)中,并且附接到在轨道(18)内和沿着轨道(18)延伸的喷枪引导带(30)。 类似地,柔性喷枪(26)在轨道(18)内和沿轨道(18)延伸。 喷枪引导带链轮驱动器(40)安装在支撑件(33)上以接合喷枪引导带(30)。 类似的柔性喷枪链轮驱动器(42)安装在支撑件(33)上以接合柔性喷枪(26)。

    In bundle foreign object search and retrieval apparatus
    3.
    发明授权
    In bundle foreign object search and retrieval apparatus 失效
    捆绑对象搜索和检索装置

    公开(公告)号:US5286154A

    公开(公告)日:1994-02-15

    申请号:US661825

    申请日:1991-02-27

    摘要: An apparatus (10) for the location and removal of foreign objects from a difficult to access geometry utilizes a flexible lance (12) formed of individual hose bar segments (14) strung on cables (16) to give a structure that is flexible along its length and fairly rigid in a direction transverse to its length. Extending from working channels (18) of nozzle block (20) of the lance (12) are a pair of multi-prong retrievers (22). A miniaturized Videoprobe camera (24) is provided in the nozzle block (20) between the two retrievers (22). The retrievers are each connected to an actuating cable (26), which extends through the flexible lance (12) to a manual control (28). The camera (24) is connected by a cable (30) to suitable video processing circuits for generation of images on a video display (32). The cable (30) also houses a fiber optic bundle which conveys light to the area being serviced by the lance (12). The flexible lance (12 ) extends through a transporter (34), which positions the nozzle block end of the lance (12) opposite a portion of a steam generator or other difficult to access geometry. The transporter (34) moves along a transport rail (36) to move the nozzle block end of the lance (12) into position. The lance (12) is then advanced through the transporter (34) to move the nozzle block end into the difficult to access geometry and retracted to withdraw the nozzle block end from the difficult to access geometry.

    摘要翻译: 用于从难以进入的几何位置定位和去除异物的装置(10)利用由串联在电缆(16)上的单个软管条段(14)形成的柔性喷枪(12),以产生沿着它的柔性的结构 长度和横向于其长度的方向相当刚性。 从喷枪(12)的喷嘴块(20)的工作通道(18)延伸的是一对多叉回收器(22)。 在两个检索器(22)之间的喷嘴块(20)中设置小型化视频监控摄像机(24)。 拾取器各自连接到致动电缆(26),其通过柔性喷枪(12)延伸到手动控制(28)。 相机(24)通过电缆(30)连接到用于在视频显示器(32)上产生图像的合适的视频处理电路。 电缆(30)还容纳光纤束,其将光传送到由喷枪(12)服务的区域。 柔性喷枪(12)延伸通过运送器(34),其将喷枪(12)的喷嘴块端部定位成与蒸汽发生器的一部分相对或其他难以进入的几何形状。 输送器(34)沿着运输轨道(36)移动以将喷枪(12)的喷嘴块端部移动到位。 喷枪(12)然后通过运送器(34)前进,以将喷嘴块端部移动到难以进入的几何形状并缩回以将喷嘴块端部从难以进入的几何形状中撤出。

    Flexible lance for steam generator secondary side sludge removal
    4.
    发明授权
    Flexible lance for steam generator secondary side sludge removal 失效
    蒸汽发生器二次侧污泥去除的柔性喷枪

    公开(公告)号:US5065703A

    公开(公告)日:1991-11-19

    申请号:US303268

    申请日:1989-01-27

    申请人: Robert A. S. Lee

    发明人: Robert A. S. Lee

    IPC分类号: F22B37/48 F28G15/04

    CPC分类号: F28G15/04 F22B37/483

    摘要: A system (10) for lancing sludge deposits (12) from within a bundle (14) of vertically extending steam generator tubes (16) of a PWR steam generator secondary side assembly (18) has a flexible lance (28) mounted in a lance guide/housing transporter (30). The transporter (30) is movable along blowdown lane (20) to position end (32) of the flexible lance opposite one of the inter-tube lanes (26) so that the flexible lance (28) may be inserted along the selected inter-tube lane (26). A rigid lance guide (34) on the transporter (30) has a curved end (36) configured to turn the flexible lance (28) at a chosen angle, such as 90.degree., so that the flexible lance (28) will be fed into the selected inter-tube lane (26). The transporter has a drive (37) for advancing the flexible lance (28) through end (36) of the lance guide (34) and into the inter-tube lane (26). The flexible lance (28) includes a flexible plastic extrusion (38) with a plurality of hollow, flexible metal conduits (40) within the plastic extrusion (38) to extend lengthwise along the lance (28). The nozzle block (44) has nozzles 48, 50 and 52 so that all portions of the sludge deposits (12) adjacent to the selected inter-tube lane (26) can be reached by the flexible lance (28).

    摘要翻译: 用于从PWR蒸汽发生器次级侧组件(18)的垂直延伸的蒸汽发生器管(16)的束(14)内的污泥沉积物(12)的系统(10)具有安装在喷枪中的柔性喷枪(28) 导向/搬运车(30)。 输送器(30)可沿着排污通道(20)移动,以将柔性喷枪的端部(32)定位成与管间通道(26)中的一个相对,使得柔性喷枪(28)可以沿着所选择的中间通道 管道(26)。 传送器(30)上的刚性喷枪引导件(34)具有弯曲端部(36),该弯曲端部(36)被构造成以等于90°的选定角度转动柔性喷枪(28),使得柔性喷枪(28)将被馈送 进入选择的管间通道(26)。 运输机具有用于使柔性喷枪(28)穿过喷枪引导件(34)的端部(36)推进到管间通道(26)中的驱动器(37)。 柔性喷枪(28)包括在塑料挤出件(38)内具有多个中空柔性金属导管(40)的柔性塑料挤出件(38),以沿着喷枪(28)沿纵向延伸。 喷嘴块(44)具有喷嘴48,50和52,使得与所选择的管间通道(26)相邻的污泥沉积物(12)的所有部分可由柔性喷枪(28)到达。

    Flexible lance for steam generator secondary side sludge removable
    5.
    发明授权
    Flexible lance for steam generator secondary side sludge removable 失效
    蒸汽发生器二次侧污泥可拆卸的柔性喷枪

    公开(公告)号:US4827953A

    公开(公告)日:1989-05-09

    申请号:US27810

    申请日:1987-03-18

    申请人: Robert A. S. Lee

    发明人: Robert A. S. Lee

    CPC分类号: F28G15/04 F22B37/483

    摘要: A system (10) for lancing sludge deposits (12) from within a bundle (14) of vertically extending steam generator tubes (16) of a PWR steam generator secondary side assembly (18) has a flexible lance (28) mounted in a lance guide/housing transporter (30). The transporter (30) is movable along blowdown (20) to position end (32) of the flexible lance opposite one of the inter-tube lanes (26) so that the flexible lance (28) may be inserted along the selected inter-tube lane (26). A rigid lance guide (34) on the transporter (30) has a curved end (36) configured to turn the flexible lance (28) at a chosen angle, such as 90.degree., so that the flexible lance (28) will be fed into the selected inter-tube lane (26). The transporter has a drive (37) for advancing the flexible lance (28) through end (36) of the lance guide (34) and into the inter-tube lane (26). The flexible lance (28) includes a flexible plastic extrusion (38) with a plurality of hollow, flexible metal conduits (40) within the plastic extrusion (38) to extend lengthwise along the lance (28). The nozzle block (44) has nozzles b 48, 50 and 52 so that all portions of the sludge deposits (12) adjacent to the selected inter-tube lane (26) can be reached by the flexible lance (28).

    摘要翻译: 用于从PWR蒸汽发生器次级侧组件(18)的垂直延伸的蒸汽发生器管(16)的束(14)内的污泥沉积物(12)的系统(10)具有安装在喷枪中的柔性喷枪(28) 导向/搬运车(30)。 输送器(30)可沿着排污(20)移动,以将柔性喷枪的端部(32)定位成与管间通道(26)中的一个相对,使得柔性喷枪(28)可以沿着选定的管间 车道(26)。 传送器(30)上的刚性喷枪引导件(34)具有弯曲端部(36),该弯曲端部(36)被构造成以等于90°的选定角度转动柔性喷枪(28),使得柔性喷枪(28)将被馈送 进入选择的管间通道(26)。 运输机具有用于使柔性喷枪(28)穿过喷枪引导件(34)的端部(36)推进到管间通道(26)中的驱动器(37)。 柔性喷枪(28)包括在塑料挤出件(38)内具有多个中空的柔性金属导管(40)的柔性塑料挤出件(38),以沿喷枪(28)纵向延伸。 喷嘴块(44)具有喷嘴b 48,50和52,使得与所选择的管间通道(26)相邻的污泥沉积物(12)的所有部分可以由柔性喷枪(28)到达。

    Microprocessor-based control and diagnostic system for motor operated
valves
    6.
    发明授权
    Microprocessor-based control and diagnostic system for motor operated valves 失效
    基于微处理器的电动阀控制和诊断系统

    公开(公告)号:US4694390A

    公开(公告)日:1987-09-15

    申请号:US750617

    申请日:1985-06-28

    申请人: Robert A. S. Lee

    发明人: Robert A. S. Lee

    摘要: There is described a microprocessor-based valve motor control system which provides control, predictive control and diagnostic functions for a motor operated valve. A valve stem position sensor measures the stem position and a load sensor measures the load on the valve stem.When the valve is being opened, the system predicts the position of the valve stem at a predefined time in the future and turns off the motor if the predicted valve stem position is beyond a preselected open valve position. When said valve is being closed, the system predicts the load on the valve stem at a predefined time in the future and turns off the motor if the predicted load value exceeds a preselected maximum desirable stem closing load.

    摘要翻译: 描述了一种基于微处理器的阀门电机控制系统,其提供用于电动阀的控制,预测控制和诊断功能。 阀杆位置传感器测量阀杆位置,负载传感器测量阀杆上的负载。 当阀门打开时,系统在将来的预定时间预测阀杆的位置,如果预测的阀杆位置超过预选的打开阀位置,则关闭电机。 当所述阀门关闭时,系统在将来的预定时间预测阀杆上的负载,并且如果预测的负载值超过预选的最大期望的阀杆关闭负载,则关闭电动机。