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EP1630425B1 - Circuit de sécurité pour un actionneur à actionnement par fluide et méthode pour son utilisation - Google Patents

Circuit de sécurité pour un actionneur à actionnement par fluide et méthode pour son utilisation Download PDF

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Publication number
EP1630425B1
EP1630425B1 EP05016934A EP05016934A EP1630425B1 EP 1630425 B1 EP1630425 B1 EP 1630425B1 EP 05016934 A EP05016934 A EP 05016934A EP 05016934 A EP05016934 A EP 05016934A EP 1630425 B1 EP1630425 B1 EP 1630425B1
Authority
EP
European Patent Office
Prior art keywords
valve
valves
cartridge
solenoid
safety circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Revoked
Application number
EP05016934A
Other languages
German (de)
English (en)
Other versions
EP1630425A3 (fr
EP1630425A2 (fr
Inventor
Martin Schmieding
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hydac System GmbH
Original Assignee
Hydac System GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34980849&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1630425(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hydac System GmbH filed Critical Hydac System GmbH
Publication of EP1630425A2 publication Critical patent/EP1630425A2/fr
Publication of EP1630425A3 publication Critical patent/EP1630425A3/fr
Application granted granted Critical
Publication of EP1630425B1 publication Critical patent/EP1630425B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • F15B20/008—Valve failure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/141—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path
    • F01D17/145—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path by means of valves, e.g. for steam turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D9/00—Stators
    • F01D9/06—Fluid supply conduits to nozzles or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
    • F15B2211/31505—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source and a return line
    • F15B2211/31511—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source and a return line having a single pressure source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/329—Directional control characterised by the type of actuation actuated by fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to the return line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/855—Testing of fluid pressure systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/87—Detection of failures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/875—Control measures for coping with failures
    • F15B2211/8755—Emergency shut-down

Definitions

  • the invention relates to a safety circuit for media-driven consumers, such as steam or gas turbines, with at least one first solenoid valve, which acts on a fluid circuit, in particular hydraulic circuit to which an actuator is connected, which acts on the operating behavior of the consumer, wherein at least one further Solenoid valve is present, which is connected in such a way with at least one of the other solenoid valves, that at least one control valve connected in the fluid circuit acts on the actuating device only with simultaneous activation of at least two solenoid valves.
  • the invention further relates to a method for operating the safety circuit.
  • the so-called quick-closing valves are usually actuated hydraulically, with the use of an actuator, usually in the form of a disk springs equipped with hydraulic cylinder (working cylinder) at Drucklos circuit of the same, under the action of the spring force the piston rod of the cylinder extends, while the Closes quick-acting valve as a control valve and the mass flow supply to the turbine stops before it can get into the damaging overspeed range.
  • an actuator usually in the form of a disk springs equipped with hydraulic cylinder (working cylinder) at Drucklos circuit of the same, under the action of the spring force the piston rod of the cylinder extends, while the Closes quick-acting valve as a control valve and the mass flow supply to the turbine stops before it can get into the damaging overspeed range.
  • the US 5 561 976 describes a safety circuit for an industrial gas turbine, with two series circuits of solenoid valves, which act on a fluid circuit, in particular on a fuel supply circuit, for the gas turbine.
  • an actuator can be connected, which acts on the performance of the gas turbine, and the solenoid valves are interconnected such that only with simultaneous control of two solenoid valves of each series circuit a switched into the fluid circuit control valve acts on the actuator.
  • the present invention seeks to further improve the known safety circuits and their operating methods to the extent that the functional reliability for each consumer is made, the application of the safety circuit is not limited to the turbine or power plant area should be.
  • This object is achieved by a safety circuit having the features of patent claim 1 and an operating method having the features of patent claim 9.
  • At least one further solenoid valve is present, which is at least connected to one of the other solenoid valves such that only with simultaneous control of at least two solenoid valves at least one switched into the fluid circuit control valve acts on the actuator (lifting cylinder with disc spring package), the possibility of permanent verifiability of each individual essential component of the safety circuit, in particular created in the form of valves, regardless of whether the mentioned power plant is in operation or is stationary. Even during operation of the system, it is possible to always check a part of the valves and to ensure the safety function with the other components, in particular in the form of the further solenoid valves, so that this results in a high availability for the entire system.
  • the solenoid valves used can be optimized to the particular safety application case, so that here very short switch-back times may result, even with the use of customary for these valves spring return for the valve piston
  • the control valve is designed in the form of a cartridge valve. There is another corresponding second cartridge valve provided.
  • the two cartridge valves are fluidly connected to each other on its output side and connected to the tank and the input side fluidly connected to the output of two other cartridge valves, which have so-called active cartridge valves on two control inputs and their two input sides with the Supply line of the fluid circuit are connected. Due to the parallel connection of all logic valves with the possibility of their simultaneous opening, a large volume flow can be passed without pressure in no time to the tank.
  • an energy storage such as a plate spring
  • the respective solenoid valves of the safety circuit in the manner of a series circuit are connected in such a fluid-conducting manner that always an output of a valve fluid leading connected to an input of another valve, wherein at least one input control line of the respective control valve is connected to the input side of at least one assignable solenoid valve.
  • control valves are connected in parallel to each other so that when they are simultaneously opened by means of the controlled solenoid valves, a large volume flow is manageable.
  • so-called cartridge valves are used as control valves, which ensure a high reliability due to their structural design.
  • These cartridge valves are also referred to in technical language with logic valves. Its structure and function is exemplary in Volume 4 of the hydraulic trainer described by Mannesmann Rexroth (edition 1989, print number RD 00280 / 01.89-1 ).
  • Fig. 1 The security circuit of Fig. 1 is merely illustrative of the background of the invention. It is not the subject of the claims.
  • the safety circuit according to the invention has three solenoid valves 1.1, 1.2 and 1.3. Further, for the safety circuit according to the Fig. 1 a single cartridge valve 2.1 is provided. At a tapping point DS, the system pressure can be recorded via an electrical pressure transducer 3.
  • the cartridge valve 2.1 is spring-loaded and has a proximity or limit switch 5, in order to detect the switching position of the cartridge valve 2.1.
  • the safety circuit is provided with a throttle 6 and a diaphragm 7.
  • the pertinent aperture 7 leads to a filter unit 8, which in turn is connected on the input side to a part of a fluid circuit 10. Further, an actuator 9 opens between the junction P and the throttle 7 in the fluid circuit 10th
  • All three solenoid valves 1.1, 1.2, 1.3 are shown in their quiescent current position, ie in their de-energized position, in which the respective inputs and outputs of the solenoid valves, as shown crosswise connected to each other fluidly. Furthermore, a respective output A1 of a solenoid valve 1.1, 1.2, 1.3 is connected to a respective input E1 of the series-connected solenoid valve. Furthermore, the respectively further input E2 is connected in a fluid-conducting manner to a supply line 12 of the fluid circuit 10. The other outputs A2 of the respective solenoid valve 1.1, 1.2, 1.3 are on the one hand fluidly connected to each other and the other fluid connected to the tank T of the fluid circuit 10 connected. An input side of the cartridge valve 2.1 opens in the direction of the connection point P in the fluid circuit 10 and the output side, as in the Fig. 1 shown, the cartridge valve 2.1 also connected to the tank T.
  • the respective solenoid valve 1.1, 1.2, 1.3 In their energized further switching position, the respective solenoid valve 1.1, 1.2, 1.3 would connect the inputs E1 and E2 according to the circuit diagram representation and shut off the outputs A1, A2.
  • the solenoid valves 1.1, 1.2, 1.3 are spring-loaded held in its closed position and the respective position of the solenoid valve is verifiable via encoder 14.
  • the actuating device 9 consists of a hydraulic working cylinder, wherein the piston rod unit 16 is permanently spring-loaded, preferably by exerting a compressive force on a plate spring 18.
  • a plate spring 18 As shown in the Fig. 1 is the piston rod unit 16 against the pressure force of the plate spring 18 via the system pressure of the fluid circuit 10 in the direction of the Fig. 1 held in the raised position and at a pressure drop at the pressure input point P1 for the actuator 9 extends the piston rod unit 16 downwards and actuates a control valve 20, which controls the media flow to the respective consumer (not shown), for example, the steam mass flow for driving a steam or gas turbine (not shown) is prevented.
  • the actual purpose of the safety circuit is to control a certain oil volume flow in a predetermined time (60 to 80 ms) as depressurized as possible to the tank T.
  • the pressure difference .DELTA.p available for this purpose results inter alia from the characteristic of the spring assembly integrated in the actuating device 9 in the form of the disk springs 18.
  • the disk springs 18 act in the closing direction, ie. H. the piston rod unit 16 extends, wherein the design system pressure in the safety circuit shown should be at least 7 to 8 bar, with fully tensioned plate spring 18.
  • system pressures up to 300 bar and more can be realized.
  • the individual components are designed and matched to one another such that the resulting end ⁇ p does not exceed 1.5 to 2 bar when the spring 18 is relaxed.
  • This pressure is triggered even when triggered, ie currentless solenoid valves 1.1, 1.2 and 1.3, the criterion for a non-pressurized circulation, ie the specific oil through the aperture 7 volume is passed through the cartridge valve 2.1 to the tank T that the spring 18 in the hydraulic cylinder Actuator 9 is not tensioned. This happens only when at least two of the solenoid valves are connected to the positions 1.1, 1.2 or 1.3 energized.
  • the solenoid valves 1.1, 1.2 and 1.3 are shown de-energized and are monitored for their piston switching position.
  • the solenoid valves 1.1, 1.2 and 1.3 are provided with the encoders 14, in particular in the form of inductive proximity switches.
  • the pertinent proximity switches can be used either as normally closed or as normally open.
  • solenoid valve 1.1 or 1.2 or 1.3 Under review.
  • the pressure-conducting control bores of both the cartridge valve 2.1 and the solenoid valves 1.1, 1.2 and 1.3 are not depressurized on the input side. This means that the closing surface of the cartridge valve 2.1 is kept under system pressure and therefore remains closed.
  • solenoid valves When triggered - de-energized - two or three solenoid valves of positions 1.1, 1.2 and 1.3, the system is completely depressurized. It is irrelevant which solenoid valves are de-energized, if only two of them are de-energized.
  • the electroless circuit of two solenoid valves has the consequence that the cartridge valve 2.1 is relieved on the closing surface and opens in no time.
  • the common oil flow which results both from the closing operation of the hydraulic cylinder 9 and from the fluid flow coming from the orifice 7, is then against said differential pressure of about ⁇ 1.5 to 2 bar from the input side port of the cartridge valve 2.1 in the direction of the output side Connection directed against the atmospheric pressure in the tank T.
  • the limit switch 5 which may also be in the form of a pressure transducer (not shown), then signals the current valve position (open) of the cartridge valve 2.1 to a central office (control room or the like) on, which allows the inference that successfully a Sturgeon situation at the consumer (turbine) could be eliminated via the control valve 20 by closing the same.
  • the pressure transducer 3 monitors the pressure in the system in addition to the position monitoring of the valve initiators in the form of the encoder 14.
  • the safety circuit shown is basically designed as a closed circuit current; but there are also applications conceivable, especially in other technical areas, where a triggering of the safety function by energizing the solenoid valves 1.1, 1.2 and 1.3 takes place.
  • the monitoring of the system pressure as indicated also allows a permanent electronic monitoring as an additional safety criterion.
  • the use of cartridge valves within the safety circuit has achieved increased functional reliability.
  • the control port X of the cartridge valve 3.1 opens together with the control port Y of the cartridge valve 3.2 in the connecting line between the output A1 and input E1 of solenoid valve 1.3 or 1.2. Furthermore, the control port X of the cartridge valve 3.2 opens together with the control port Y of the cartridge valve 3.1 in the connecting line between the output A1 and input E1 of solenoid valve 1.2 or solenoid valve 1.1.
  • the pressure transducer 3 as shown in the Fig.2 against the pertinent representation on both sides of the aperture 4 below the cartridge valves 2.1 and 2.2 connected in the fluid circuit 10.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Magnetically Actuated Valves (AREA)

Claims (9)

  1. Montage de sécurité pour des utilisateurs actionnés par fluide, comme des turbines à vapeur ou des turbines à gaz, comprenant au moins une première électrovanne (1.1) qui agit sur un circuit (10) fluidique, notamment sur un circuit hydraulique, auquel peut être raccordé un dispositif (9) d'actionnement, qui agit sur les propriétés de fonctionnement de l'utilisateur, dans lequel il y a au moins une autre électrovanne (1.2 ; 1.3) qui est montée au moins avec l'une des autres électrovannes (1.1) de manière à ce qu'au moins une vanne (2.1) de commande, montée dans le circuit (10) fluidique, agisse sur le dispositif (9) d'actionnement seulement si au moins deux électrovannes (1.1 ; 1.2, 1.3) sont commandées simultanément, dans lequel la vanne (2.1) de commande est réalisée sous la forme d'une vanne-cartouche, en ce qu'il est prévu une deuxième vanne-cartouche (2.2) correspondante, en ce que les deux vannes-cartouches (2.1, 2.2) communiquent entre elles fluidiquement du côté de leur sortie et sont raccordées à la cuve (T), caractérisé en ce que les deux vannes-cartouches (2.1 ; 2.2) communiquent fluidiquement du côté de l'entrée respectivement avec la sortie de deux autres vannes-cartouches (3.1, 3.2) qui disposent, en tant que dites vannes-cartouches actives, de deux entrées (X, Y) de commande et dont les deux côtés d'entrée communiquent avec le conduit (12) d'arrivée du circuit (10) fluidique.
  2. Montage de sécurité suivant la revendication 1, caractérisé en ce que les électrovannes (1.1, 1.2, 1.3) respectives communiquent entre elles à la façon d'un montage série, de manière à ce qu'une sortie (A) de l'une des vannes communique toujours fluidiquement avec une entrée (E) d'une autre vanne et à ce qu'au moins un conduit de commande d'entrée de la vanne (2.1) de commande respective soit montée du côté (E) d'entrée d'au moins une électrovanne pouvant être associée.
  3. Montage de sécurité suivant la revendication 1 ou 2, caractérisé en ce que les électrovannes et les vannes de commande ont respectivement un point de raccord de fluide, qui mène à la cuve (T) du circuit (10) fluidique.
  4. Montage de sécurité suivant l'une des revendications 1 à 3, caractérisé en ce qu'au moins un étranglement et/ou un diaphragme (4, 6, 7) est monté dans un conduit (112) d'arrivée allant du dispositif (9) d'actionnement et/ou du circuit (10) fluidique à l'électrovanne (1.1, 1.2, 1.3) respective.
  5. Montage de sécurité suivant l'une des revendications 1 à 4, caractérisé en ce que la sécurité de fonctionnement de toutes les électrovannes (1.1, 1.2, 1.3) peut être contrôlée par un transmetteur (4) électrique.
  6. Montage de sécurité suivant la revendication 5, caractérisé en ce que toutes les électrovannes (1.1, 1.2, 1.3) sont constituées de la même façon et, s'il se produit une chute de tension, se branchent sur le transmetteur (14) pouvant leur être associé respectivement pour le déclenchement du fonctionnement de sécurité.
  7. Montage de sécurité suivant l'une des revendications 1 à 6, caractérisé en ce que l'électrovanne (1.1, 1.2, 1.3) respective est un distributeur à 4/2 voies et en ce que la vanne de commande respective est réalisée en vanne-cartouche (2.1, 2.2) également dans le mode (3.1, 3.2) de construction actif.
  8. Montage de sécurité suivant l'une des revendications 1 à 7, caractérisé en ce que le dispositif (9) d'actionnement est constitué d'un vérin de travail, qui est soumis à l'action d'un ressort et qui actionne une vanne (20) de réglage, laquelle commande le courant de fluide allant à l'utilisateur respectif.
  9. Procédé pour faire fonctionner un montage de sécurité suivant l'une des revendications 1 à 8, caractérisé en ce que, dans des cycles qui peuvent être prescrits, la sécurité de fonctionnement des diverses électrovannes (1.1, 1.2, 1.3) est contrôlée et en ce qu'au moins toujours deux électrovannes, qui sont exclues d'un contrôle, assurent le fonctionnement de sécurité pour l'utilisateur respectif.
EP05016934A 2004-08-31 2005-08-04 Circuit de sécurité pour un actionneur à actionnement par fluide et méthode pour son utilisation Revoked EP1630425B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004042891A DE102004042891B3 (de) 2004-08-31 2004-08-31 Sicherheitsschaltung für medienbetriebene Verbraucher und Verfahren zum Betrieb derselben

Publications (3)

Publication Number Publication Date
EP1630425A2 EP1630425A2 (fr) 2006-03-01
EP1630425A3 EP1630425A3 (fr) 2011-11-02
EP1630425B1 true EP1630425B1 (fr) 2012-12-19

Family

ID=34980849

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05016934A Revoked EP1630425B1 (fr) 2004-08-31 2005-08-04 Circuit de sécurité pour un actionneur à actionnement par fluide et méthode pour son utilisation

Country Status (3)

Country Link
US (1) US7322270B2 (fr)
EP (1) EP1630425B1 (fr)
DE (1) DE102004042891B3 (fr)

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DE102011082599B4 (de) * 2011-09-13 2013-08-14 Keicher Hydraulik GmbH Ventilanordnung, Verwendung, Turbine und Kraftwerk
DE102012022871A1 (de) 2012-11-22 2014-05-22 Hydac System Gmbh Stellvorrichtung
DE102013003976B4 (de) * 2013-01-31 2015-10-15 Voith Patent Gmbh Vorrichtung zum Betätigen eines Schnellschlussventils
DE102014006357B3 (de) * 2014-04-30 2015-06-25 Festo Ag & Co. Kg Druckluftsystem mit Sicherheitsfunktion und Verfahren zum Betreiben eines solchen Druckluftsystems
EP3152447B1 (fr) 2014-06-03 2020-05-27 Voith Patent GmbH Dispositif de commande hydraulique pour une soupape d'arrêt rapide d'une turbine à vapeur et une ensemble de turbine à vapeur
DE102015210274A1 (de) 2014-06-03 2015-12-03 Voith Patent Gmbh Mehrwegeventil, insbesondere ein 6/2-Wegeventil und Mehrwegeventilanordnung
FR3042581B1 (fr) * 2015-10-16 2018-03-30 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Systeme de commande de circulation de fluide, installation d'alimentation comprenant un tel systeme de commande et procede employant une telle installation d'alimentation
DE102016000644A1 (de) 2016-01-22 2017-07-27 Hydac System Gmbh Schaltungsanordnung
DE102017117335B4 (de) * 2017-07-31 2024-12-05 Bürkert Werke GmbH & Co. KG Betätigungseinheit für ein Prozessventil sowie Prozessventil
CN109404065B (zh) * 2018-10-12 2021-12-17 上海华电电力发展有限公司 防止主机汽门遮断电磁阀故障引起机组跳闸的控制方法
JP7297617B2 (ja) * 2019-09-13 2023-06-26 日本ムーグ株式会社 電動油圧アクチュエータシステム、電動油圧アクチュエータシステムの油圧回路、及びそれを含む蒸気タービンシステム
NO346531B1 (en) * 2021-05-18 2022-09-26 Ideation As Detection of safe activation of shutdown valves and blowdown valves
CN115111009A (zh) * 2022-08-08 2022-09-27 北京北重汽轮电机有限责任公司 一种汽轮机危急遮断及主汽门控制系统及其使用方法
CN118257749B (zh) * 2024-05-31 2024-09-17 杭州安衡迅科技有限公司 液压控制系统及装配有其的减振结构

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US7322270B2 (en) 2008-01-29
EP1630425A3 (fr) 2011-11-02
EP1630425A2 (fr) 2006-03-01
US20060042250A1 (en) 2006-03-02

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