Auxiliary feedwater valve control apparatus of steam generator
    1.
    发明公开
    Auxiliary feedwater valve control apparatus of steam generator 审中-公开
    Steuerungsvorrichtungfürein Speisewasserhilfsventil eines Dampferzeugers

    公开(公告)号:EP2587142A2

    公开(公告)日:2013-05-01

    申请号:EP12189861.3

    申请日:2012-10-25

    IPC分类号: F22B35/00 F22B37/46

    摘要: An auxiliary feedwater valve control apparatus (1) of a steam generator (103) that operates an auxiliary feedwater valve (123) in an auxiliary feed water system provided as a protective system of a main feed water system that feeds secondary cooling water to a steam generator (103), includes a water-level detection means (125) that detects a water level of secondary cooling water in the steam generator (103), a water-level-deviation calculation means (3) that calculates a deviation between a preset target water level and a water level detected by the water-level detection means (125), a valve-operation setting means (4) that sets an aperture of the auxiliary feedwater valve (123) corresponding to a deviation of the water level, and a valve drive means (5) that outputs a signal for driving the auxiliary feedwater valve (123) corresponding to setting by the valve-operation setting means (4).

    摘要翻译: 一种蒸汽发生器(103)的辅助给水阀控制装置(1),其在辅助给水系统中操作辅助给水阀(123),所述辅助给水阀设置为主给水系统的保护系统,所述主给水系统将二次冷却水供给到蒸汽 发电机(103)包括检测蒸汽发生器(103)中二次冷却水的水位的水位检测装置(125);水位偏差计算装置(3),其计算预设的 目标水位和由水位检测装置检测的水位;阀操作设定装置,其根据水位的偏差设定辅助给水阀123的孔径;以及 一个阀驱动装置(5),其根据阀操作设定装置(4)的设定输出用于驱动辅助给水阀(123)的信号。

    Fail-safe system
    3.
    发明公开
    Fail-safe system 失效
    故障安全系统

    公开(公告)号:EP0887628A1

    公开(公告)日:1998-12-30

    申请号:EP98304977.6

    申请日:1998-06-24

    摘要: A circuit for controlling the fail-safe operation of a measurement and control apparatus (not shown) such as is used in a steam raising plant to monitor the water level in a steam generation vessel. It includes a sensor (10) which comprises an electrode which in use is inserted into a water/steam column (not shown) to detect the presence or absence of water.
    The apparatus detects the presence or absence of water by making a measurement of the impedance experienced in a gap between an insulated tip of the electrode and a surface held at a reference voltage or else connected to ground. The apparatus may be configured to provide an alarm.
    The circuit comprises comparators (IC1 and IC2), a phase detector (IC3) and a triple redundant drive circuit (12) which drives a relay (14) to indicate a normal or an abnormal/fault condition.

    摘要翻译: 一种用于控制测量和控制设备(未示出)的故障安全操作的电路,所述测量和控制设备例如用于蒸汽提升设备中以监测蒸汽发生容器中的水位。 它包括一个传感器(10),该传感器包括一个电极,该电极在使用时被插入水/蒸汽柱(未示出)中以检测水的存在或不存在。 该装置通过测量在电极的绝缘尖端和保持在参考电压下的表面之间的间隙中所经历的阻抗或者接地而检测水的存在或不存在。 该装置可以被配置为提供警报。 该电路包括比较器(IC1和IC2),相位检测器(IC3)和驱动继电器(14)以指示正常或异常/故障状况的三重冗余驱动电路(12)。

    Auxiliary feedwater valve control apparatus of steam generator
    4.
    发明公开
    Auxiliary feedwater valve control apparatus of steam generator 审中-公开
    蒸汽发生器的辅助给水阀门控制装置

    公开(公告)号:EP2587142A3

    公开(公告)日:2018-04-11

    申请号:EP12189861.3

    申请日:2012-10-25

    IPC分类号: F22B35/00 F22B37/46

    摘要: An auxiliary feedwater valve control apparatus (1) of a steam generator (103) that operates an auxiliary feedwater valve (123) in an auxiliary feed water system provided as a protective system of a main feed water system that feeds secondary cooling water to a steam generator (103), includes a water-level detection means (125) that detects a water level of secondary cooling water in the steam generator (103), a water-level-deviation calculation means (3) that calculates a deviation between a preset target water level and a water level detected by the water-level detection means (125), a valve-operation setting means (4) that sets an aperture of the auxiliary feedwater valve (123) corresponding to a deviation of the water level, and a valve drive means (5) that outputs a signal for driving the auxiliary feedwater valve (123) corresponding to setting by the valve-operation setting means (4).

    摘要翻译: 一种蒸汽发生器(103)的辅助给水阀控制装置(1),该辅助给水阀控制装置(1)在辅助给水系统中操作辅助给水阀(123),所述辅助给水系统被设置为主要给水系统的保护系统,所述主给水系统将二次冷却水供给到蒸汽 发电机(103)包括检测蒸汽发生器(103)中的二次冷却水的水位的水位检测装置(125),水位偏差计算装置(3),该水位偏差计算装置 目标水位和由水位检测装置(125)检测的水位;阀操作设定装置(4),其设定与水位的偏差对应的辅助给水阀(123)的开度;以及 (5),该阀驱动装置(5)输出用于驱动辅助给水阀(123)的信号,该信号对应于阀操作设定装置(4)的设定。

    Steuergerät für wärmetechnische Anlagen
    5.
    发明公开
    Steuergerät für wärmetechnische Anlagen 有权
    控制器热工设备

    公开(公告)号:EP1081431A3

    公开(公告)日:2003-01-15

    申请号:EP00115606.6

    申请日:2000-07-20

    申请人: GESTRA GmbH

    IPC分类号: F22B37/42 F22B37/46

    摘要: Für den automatisierten Betrieb von Dampfkesseln und ähnlichen wärmetechnischen Anlagen sind Steuergeräte (1) mit zwei Sicherheitsrelais (9, 10) für die Sicherheitsstromleitung (7) einzusetzen. Das erfindungsgemäße Steuergerät (1) weist zwei zu den Sicherheitsrelais (9, 10) parallele Nebenschlussleitungen (11, 13, 14; 12, 13, 14) auf. Die Sicherheitsrelais (9, 10) weisen Ruhekontakte (17) auf. Zur Prüfung der Schaltfähigkeit werden die Sicherheitsrelais (9, 10) in ihre Ruhestellung umgeschaltet und die Spannungsänderung an ihren Ruhekontakten (17) überwacht. Bei fehlender Spannung ergeht ein Fehlersignal. Während der Prüfung wird die parallele Nebenschlussleitung (11, 13, 14; 12, 13, 14) geschlossen. Die Sicherheitsstromleitung (7) ist daher während der Prüfung nicht unterbrochen. Zur Steuerung der Sicherheitsrelais (9, 10) sind Schaltverstärker (27, 28) mit einer Ansprech- und Aktionszeit vorgesehen, die einen Bruchteil der vorgegebenen Ansprechzeit der Sicherheitsrelais (9, 10) beträgt. Zur Prüfung der elektrischen Ansteuerung werden die Antriebe (21) der Sicherheitsrelais (9, 10) stromlos geschaltet und die Spannungsänderung an den Antrieben (21) überwacht. Bei unzureichender Spannungsänderung ergeht ein Fehlersignal. Die Sicherheitsrelais (9, 10) verharren während dieser Prüfung in ihrer Arbeitsstellung.

    Boiler low water cut-off
    7.
    发明公开
    Boiler low water cut-off 失效
    Kesselabschaltung bei Mindestwasserstand。

    公开(公告)号:EP0115106A1

    公开(公告)日:1984-08-08

    申请号:EP83300371.8

    申请日:1983-01-25

    申请人: Vosper, George W.

    发明人: Vosper, George W.

    IPC分类号: F22B37/46 G01F23/24 H01H35/18

    摘要: A low liquid level sensor (12) in a hot water heating system permitting testing operability thereof in situ without draining down the system. The sensor (12) is located in a cavity (13) that has an opening (16) in the bottom thereof in fluid communication with the liquid in the vessel during normal operation of the system. The end of the opening is at a lower elevation than the sensor and liquid from the vessel (10) is in the cavity (13) during normal operation of the system. When the liquid drops to a predetermined low level the sensor activates the safety cut-off. Valved passage means are provided exteriorly of the vessel so that a gas can be injected into the cavity to pressurize the same and drive the liquid in the cavity through the opening into the vessel simulating a low water level condition. At the simulated low water level condition operability of the sensor can be determined. Means (26, 27) are provided to release the gas from the cavity. The sensor is mounted by an insulator (20) that projects into the cavity and the gas release means is spaced from the end of the cavity so that an air pocket is maintained reducing the tendency of conductive deposits to build up on the insulator. A fail-safe circuit is provided avoiding malfunctioning of the cut-off safety control should there be a large build up of conductive deposits on the insulator.

    摘要翻译: 在热水加热系统中的低液位传感器(12),其允许原位测试其可操作性,而不会使系统下降。 传感器(12)位于空腔(13)中,该空腔(13)在系统的正常操作期间在其底部具有与容器中的液体流体连通的开口(16)。 开口的端部处于比传感器更低的高度,并且在系统的正常操作期间来自容器(10)的液体在空腔(13)中。 当液体下降到预定的低水平时,传感器启动安全切断。 带阀通道装置设置在容器的外部,使得气体可以注入空腔中以对其进行加压,并且通过开口将空腔中的液体驱动到模拟低水位状态的容器中。 在模拟的低水位条件下,可以确定传感器的可操作性。 提供装置(26,27)以从腔体释放气体。 该传感器由突出于空腔中的绝缘体(20)安装,并且气体释放装置与空腔的端部间隔开,从而保持空气袋减少了导电沉积物在绝缘体上积聚的趋势。 如果在绝缘体上存在大量的导电沉积物,则可提供故障安全电路,以避免切断安全控制的故障。

    DISPOSITIF DE DETECTION DU NIVEAU D'UN LIQUIDE

    公开(公告)号:EP3514507A1

    公开(公告)日:2019-07-24

    申请号:EP18212163.2

    申请日:2018-12-13

    申请人: SEB S.A.

    IPC分类号: G01F23/24 F22B37/46 H02M5/00

    摘要: La présente invention a pour objet un dispositif (1) de détection du niveau d'un liquide (4) dans une cuve (3), reliée à la terre (7), ledit dispositif comprenant un capteur (2) positionné à un niveau prédéterminé dans la cuve (3), un détecteur de courant (20) relié au point de connexion (8) du capteur (2), pour détecter un courant lorsque le liquide (4) atteint le niveau prédéterminé, un circuit (10) d'alimentation pour alimenter le capteur (2), comprenant un premier point relié à la phase (5) (ou au neutre (6)) du réseau et un deuxième point relié au neutre (6) (ou à la phase (5)); le circuit (10) comprenant un montage pour relier le point de connexion (8) à un potentiel différent de la terre (7) lorsque le premier point est relié à la phase (5) et le deuxième point est relié au neutre (6), ou inversement.