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    Electrohydrostatic actution system, hydraulic circuit of electrohydrostatic actution system, and steam turbine system including same
    2.
    发明授权
    Electrohydrostatic actution system, hydraulic circuit of electrohydrostatic actution system, and steam turbine system including same 有权

    公开(公告)号：US11808158B2

    公开(公告)日：2023-11-07

    申请号：US17441663

    申请日：2020-04-27

    Applicant: MOOG JAPAN LTD.

    Inventor： Jiong Yang ,  Hidemitsu Takamoto ,  Naritoyo Shibata

    IPC: F01D17/10 ,  F01D21/18 ,  F15B13/01 ,  F15B13/02 ,  F15B20/00

    CPC classification number: F01D17/10 ,  F01D21/18 ,  F15B13/01 ,  F15B13/027 ,  F15B13/028 ,  F15B20/002 ,  F15B20/004 ,  F05D2220/31 ,  F05D2270/303

    Abstract: Provided is an electrohydrostatic actuation system including an emergency shut-off circuit to be actuated stably with a simple configuration. The electrohydrostatic actuation system includes: a hydraulic cylinder (24) including a piston (25) to which a valve element is connected, a first chamber (24A), and a second chamber (24B); a hydraulic pump (21) configured to supply hydraulic fluid to the first chamber (24A) or the second chamber (24B); a servo motor (M) configured to drive the hydraulic pump (21); a shuttle valve (11) configured to establish communication to a downstream side under a state in which a hydraulic pressure generated by the hydraulic pump (21) is maintained; a solenoid valve (12) configured to receive the hydraulic pressure via the shuttle valve (11) as a pilot pressure; and a logic valve (13) including a first port configured to receive the pilot pressure from the solenoid valve (12), and a second port to be communicated to the first chamber (24A) of the hydraulic cylinder (24). When the solenoid valve (12) is brought to a de-energized state, the pilot pressure of the logic valve (13) is released, and the logic valve (13) causes the hydraulic fluid in the first chamber (24A) communicated to the second port to flow into the second chamber (24B) so that emergency shut-off of the valve element is achieved by a return spring (26).

    Method for retrofitting a turbomachine
    3.
    发明授权
    Method for retrofitting a turbomachine 有权

    公开(公告)号：US09869199B2

    公开(公告)日：2018-01-16

    申请号：US15392340

    申请日：2016-12-28

    Applicant: DRESSER-RAND COMPANY

    Inventor： Trevor Larcheveque ,  Steven Turybury ,  Vincent Hood ,  Andrew Morrill ,  Rick Glover

    IPC: F01D21/18

    CPC classification number: F01D21/18 ,  F05D2220/31 ,  F05D2230/10 ,  F05D2230/80 ,  F05D2240/60 ,  Y10T29/49238 ,  Y10T29/49716

    Abstract: A method for retrofitting a turbomachine is provided wherein a first trip cup of the turbomachine is replaced with a second trip cup and by replacing a mechanical flyweight governor with a mechanical-hydraulic governor. The second trip cup includes a plunger disposed in a hole defined by the second trip cup. The first trip cup is removed from the turbomachine and the second trip cup installed such that, when a speed of the turbomachine exceeds a predetermined value, the plunger actuates a trip paddle located adjacent the second trip cup. The mechanical flyweight governor is removed from the turbomachine and a first set of governor linkages coupling the mechanical flyweight governor to a steam source. The mechanical-hydraulic governor is installed in the turbomachine, the mechanical-hydraulic governor being coupled to a shaft of the turbomachine and being coupled to the steam source via a second set of governor linkages.

    System and device for over-speed protection of a turbo-machine
    4.
    发明授权
    System and device for over-speed protection of a turbo-machine 有权

    公开(公告)号：US09650912B2

    公开(公告)日：2017-05-16

    申请号：US15092121

    申请日：2016-04-06

    Applicant: General Electric Company

    Inventor： Brent Allan Dietrich ,  Ricardo Stack ,  John Kirk Foundoulis ,  Steven Jackson Foss

    IPC: F01D21/02 ,  F01D21/18 ,  F16K31/06

    CPC classification number: F01D21/02 ,  F01D21/18 ,  F05D2220/31 ,  F05D2220/32 ,  F16K31/06 ,  Y10T137/86606

    Abstract: A system and device to prevent damage during over-speed condition in a turbo-machine. In one embodiment, the system includes a fluid circuit with a header, which couples to the turbo-machine, and a hydraulic circuit through which fluid evacuates the header to a drain during the over-speed condition. The hydraulic circuit includes a trip header manifold with a pilot element in flow connection with a drain valve element having an actuator to regulate flow of fluid from the header. For example, the pilot element uses a pair of solenoid valves to change pressure of a fluid in the drain valve element and maintains the actuator in a first position to prevent fluid evacuation during normal operating conditions. When over-speed condition is detected, the solenoid valves change state, reducing the pressure of the fluid, permitting the actuator to move to a second position placing the header in flow connection with the drain.

    FLUID PRESSURE REVERSING VALVE
    6.
    发明申请
    FLUID PRESSURE REVERSING VALVE 有权
    流体压力反向阀

    公开(公告)号：US20130099144A1

    公开(公告)日：2013-04-25

    申请号：US13805669

    申请日：2011-05-27

    Applicant: Werner Buse ,  Rolf Lappan ,  Rolf Dohrmann ,  Franz-Josef Schnelker ,  Christoph Sadowski

    Inventor： Werner Buse ,  Rolf Lappan ,  Rolf Dohrmann ,  Franz-Josef Schnelker ,  Christoph Sadowski

    IPC: F01D21/18

    CPC classification number: F01D21/18 ,  F16K31/0627 ,  F16K31/0693

    Abstract: A fluid pressure reversing valve includes a housing, a coil carrier, a coil wound on the coil carrier, a bearing, an armature axially displaceable in the bearing, a core, a flux guiding device, a first connection bore, a control chamber, a first valve seat. A connection sleeve comprises a second connection bore, a first valve seat for a valve element of the armature, and a second valve seat for the valve element of the armature. The connection sleeve communicates with a fluid to be controlled. A third connection bore is connected with the control chamber. A valve element abuts against the first valve seat in a first position so as to form a connection between the first connection bore and the third connection bore, and against the second valve seat in a second position so as to form a connection between the third connection bore and the second connection bore.

    Abstract translation: 流体压力换向阀包括壳体，线圈架，缠绕在线圈架上的线圈，轴承，在轴承中可轴向移动的电枢，磁芯，磁通引导装置，第一连接孔，控制室， 第一阀座。 连接套筒包括第二连接孔，用于衔铁的阀元件的第一阀座和用于衔铁的阀元件的第二阀座。 连接套筒与待控制的流体连通。 第三连接孔与控制室连接。 阀元件在第一位置抵靠第一阀座，以在第一连接孔和第三连接孔之间形成连接，并在第二位置抵靠第二阀座，以形成第三连接 孔和第二连接孔。

    Fuel System
    7.
    发明申请
    Fuel System 有权
    燃油系统

    公开(公告)号：US20100158707A1

    公开(公告)日：2010-06-24

    申请号：US12639439

    申请日：2009-12-16

    Applicant: Michael Griffiths ,  Martin Richard Kirkman

    Inventor： Michael Griffiths ,  Martin Richard Kirkman

    IPC: F04B1/26

    CPC classification number: F02C9/263 ,  F01D21/18 ,  F02C7/232 ,  F02C9/30 ,  F02C9/32 ,  F02C9/38 ,  F02C9/46 ,  F05D2270/00

    Abstract: A fuel system is described that comprises a pressure raising and shut-off valve (PRSOV), and a control valve arrangement operable to control a fuel pressure applied to a part of the PRSOV urging the PRSOV towards a closed position, wherein the control valve arrangement is supplied with fuel at a pressure controlled by a variable fluid pressure potentiometer network including a variable flow restrictor which is variable in response to changes in the position occupied by the PRSOV.

    Abstract translation: 描述了一种燃料系统，其包括升压和截止阀（PRSOV），以及控制阀装置，其可操作以控制施加到部分PRSOV的燃料压力，以将PRSOV推向关闭位置，其中控制阀装置 在由可变流体压力电位计网络控制的压力下供应燃料，该可变流体压力电位计网络包括可变流量限制器，其可变地响应于由PRSOV占据的位置的变化。

    Direct acting hydraulic trip block
    8.
    发明申请
    Direct acting hydraulic trip block 失效
    直动液压脱扣器

    公开(公告)号：US20080087339A1

    公开(公告)日：2008-04-17

    申请号：US11581799

    申请日：2006-10-16

    Applicant: Samuel Blaser ,  Heinz Vogler

    Inventor： Samuel Blaser ,  Heinz Vogler

    IPC: F01D21/18

    CPC classification number: F01D21/18 ,  F01D17/145 ,  Y10T137/8225 ,  Y10T137/87885 ,  Y10T137/87917

    Abstract: A direct acting hydraulic voting trip block defines three separate paths between an inlet and an outlet port. Each path is intersected by a valve cylinder. Valve pistons in each valve cylinder are configured, in the activated position, to block two of thee different paths. As long as at least two of the pistons are in the activated position, communication between the inlet and outlet ports is prevented.

    Abstract translation: 直接作用的液压投票跳闸块在入口和出口之间限定三个独立的路径。 每个路径都由一个阀筒相交。 每个阀缸中的阀活塞在激活位置被配置成阻挡两个不同路径。 只要至少两个活塞处于激活位置，就可以防止入口和出口之间的连通。

    Safety circuit for a working cylinder
    9.
    发明授权
    Safety circuit for a working cylinder 失效
    一个工作缸的安全电路

    公开(公告)号：US3757646A

    公开(公告)日：1973-09-11

    申请号：US3757646D

    申请日：1971-05-11

    Applicant: SULZER AG

    Inventor： ROHNER R

    IPC: F01D17/26 ,  F01D21/18 ,  F15B20/00 ,  F16K17/10 ,  F15B11/08 ,  F15B13/043

    CPC classification number: F16K17/10 ,  F01D17/26 ,  F01D21/18 ,  F15B20/004

    Abstract: Upon reception of a safety signal, the power amplifier in the form of a control valve communicates the pressure fluid duct with the non-return valve piston to open the non-return valve. This allows a flow between the upper working cylinder chamber and the lower cylinder chamber so that the piston is moved into a safety position. Should the pressure in the fluid duct be insufficient, the power amplifier is switched into communication with the upper working cylinder to cause the non-return valve to open. This also allows a flow between the two cylinder chambers.

    Abstract translation: 在接收到安全信号时，控制阀形式的功率放大器将压力流体管道与止回阀活塞连通，以打开止回阀。 这允许上工作缸室和下气缸室之间的流动，使得活塞移动到安全位置。 如果流体管道中的压力不足，则功率放大器被切换成与上部工作缸连通以使止回阀打开。 这也允许两个气缸室之间的流动。

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