DE59402992D1 - Hydraulic safety circuit - Google Patents

Hydraulic safety circuit

Info

Publication number
DE59402992D1
DE59402992D1 DE59402992T DE59402992T DE59402992D1 DE 59402992 D1 DE59402992 D1 DE 59402992D1 DE 59402992 T DE59402992 T DE 59402992T DE 59402992 T DE59402992 T DE 59402992T DE 59402992 D1 DE59402992 D1 DE 59402992D1
Authority
DE
Germany
Prior art keywords
safety circuit
hydraulic safety
hydraulic
circuit
safety
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.)
Expired - Lifetime
Application number
DE59402992T
Other languages
German (de)
Inventor
Petar Hrelic
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.)
Alstom SA
Original Assignee
Asea Brown Boveri AG Switzerland
Asea Brown Boveri AB
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
Application filed by Asea Brown Boveri AG Switzerland, Asea Brown Boveri AB filed Critical Asea Brown Boveri AG Switzerland
Application granted granted Critical
Publication of DE59402992D1 publication Critical patent/DE59402992D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
    • F01D21/20—Checking operation of shut-down devices
    • 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
    • F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
    • F01D21/16—Trip gear
    • F01D21/18—Trip gear involving hydraulic means
    • 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
    • F15B20/001—Double valve requiring the use of both hands simultaneously

Landscapes

  • 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)
  • Control Of Turbines (AREA)
DE59402992T 1993-09-06 1994-08-17 Hydraulic safety circuit Expired - Lifetime DE59402992D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4330038A DE4330038A1 (en) 1993-09-06 1993-09-06 Hydraulic safety circuit

Publications (1)

Publication Number Publication Date
DE59402992D1 true DE59402992D1 (en) 1997-07-10

Family

ID=6496925

Family Applications (2)

Application Number Title Priority Date Filing Date
DE4330038A Withdrawn DE4330038A1 (en) 1993-09-06 1993-09-06 Hydraulic safety circuit
DE59402992T Expired - Lifetime DE59402992D1 (en) 1993-09-06 1994-08-17 Hydraulic safety circuit

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE4330038A Withdrawn DE4330038A1 (en) 1993-09-06 1993-09-06 Hydraulic safety circuit

Country Status (3)

Country Link
EP (1) EP0641919B1 (en)
JP (1) JP3592377B2 (en)
DE (2) DE4330038A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004042891B3 (en) * 2004-08-31 2005-10-06 Hydac System Gmbh Safety circuit for media-powered consumers and method of operation thereof
US7828008B1 (en) * 2005-04-19 2010-11-09 SafePlex Systems, Inc. Online partial stroke testing system using a modified 2004 architecture
US7874241B2 (en) * 2005-04-19 2011-01-25 Emerson Process Management Power & Water Solutions, Inc. Electronically controllable and testable turbine trip system
DE102005040039B4 (en) * 2005-08-23 2013-01-31 Abb Technology Ag Valve arrangement for controlling a component
US7409965B2 (en) * 2006-10-16 2008-08-12 Elliott Company Direct acting hydraulic trip block
DE102009058408A1 (en) * 2009-07-09 2011-01-13 Robert Bosch Gmbh Electrohydraulic control
DE202011109158U1 (en) 2011-12-15 2012-01-24 Karl Morgenbesser Electrohydraulic safety control
PH12013000162B1 (en) 2012-06-08 2015-03-16 Emerson process man power and water solutions inc Electronically controllable and testable turbine trip system with redundant bleed manifolds
DE102014207669A1 (en) * 2014-04-23 2015-10-29 Putzmeister Engineering Gmbh Control system for a hydraulic machine
WO2015185607A1 (en) * 2014-06-03 2015-12-10 Voith Patent Gmbh Hydraulic control device for a quick-acting valve of a steam turbine and steam turbine assembly
JP6581499B2 (en) * 2015-12-25 2019-09-25 株式会社東芝 Steam valve drive
WO2017125247A1 (en) * 2016-01-22 2017-07-27 Hydac System Gmbh Safety controller
DE102016000643A1 (en) * 2016-01-22 2017-07-27 Hydac System Gmbh safety control
CN112648021B (en) * 2020-11-30 2022-12-27 华电电力科学研究院有限公司 Online maintenance and transformation method for steam turbine AST electromagnetic valve activity test

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1212664A (en) * 1969-01-21 1970-11-18 Schwermaschb Nobas Nordhausen An automatic hydraulic combining valve arrangement
SE372055B (en) * 1973-03-23 1974-12-09 Stal Laval Turbin Ab
US3943714A (en) * 1975-01-23 1976-03-16 The United States Of America As Represented By The Secretary Of The Navy Fail-safe limit switch stopping system for air motor
US4001654A (en) * 1975-07-31 1977-01-04 General Electric Company Testable protective system
FR2348523A1 (en) * 1976-04-16 1977-11-10 Telemecanique Electrique Pneumatic shift register sequence control - has threshold gate to ensure interlock signal line pressure is below given pressure
JPS5842699Y2 (en) * 1977-11-10 1983-09-27 株式会社小松製作所 Dual valve failure detection device
CH636932A5 (en) * 1979-06-22 1983-06-30 Sulzer Ag SAFETY CIRCUIT WITH A DOUBLE-ACTING, FLUID-OPERATED SERVO MOTOR.
DE3040367A1 (en) * 1980-10-25 1982-05-27 AEG-Kanis Turbinenfabrik GmbH, 8500 Nürnberg Safety system for steam or gas turbines - uses combined hydraulic and electrical system with pressure switches and magnetic valves
DE3230056A1 (en) * 1982-08-12 1984-02-16 Herion-Werke Kg, 7012 Fellbach Safety control system
JPS5949305A (en) * 1982-09-13 1984-03-21 Mitsubishi Heavy Ind Ltd Multiple hydraulic circuit for turbine preservation apparatus
DE3340925A1 (en) * 1983-04-13 1984-10-18 Siemens AG, 1000 Berlin und 8000 München CONTROL DEVICE FOR CONTROL VALVES OF TURBO MACHINES, ESPECIALLY FOR INDUSTRIAL TURBINES OF HIGH AVAILABILITY
CH666132A5 (en) * 1984-07-20 1988-06-30 Bbc Brown Boveri & Cie DEVICE FOR MONITORING PHYSICAL QUANTITIES IN PLANTS.
DE3804784A1 (en) * 1988-02-16 1989-08-24 Huperz Adalbert Multi-stage valve control
US5133189A (en) * 1991-07-15 1992-07-28 Westinghouse Electric Corp. System and method for individually testing valves in a steam turbine trip control system

Also Published As

Publication number Publication date
EP0641919B1 (en) 1997-06-04
JPH0797902A (en) 1995-04-11
JP3592377B2 (en) 2004-11-24
EP0641919A1 (en) 1995-03-08
DE4330038A1 (en) 1995-03-09

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: ALSTOM, PARIS, FR

8328 Change in the person/name/address of the agent

Free format text: ROESLER, U., DIPL.-PHYS.UNIV., PAT.-ANW., 81241 MUENCHEN