EP0376914A3 - Testing method of individual valves of steam turbines and testing device for carrying out the method - Google Patents

Testing method of individual valves of steam turbines and testing device for carrying out the method Download PDF

Info

Publication number
EP0376914A3
EP0376914A3 EP19890890329 EP89890329A EP0376914A3 EP 0376914 A3 EP0376914 A3 EP 0376914A3 EP 19890890329 EP19890890329 EP 19890890329 EP 89890329 A EP89890329 A EP 89890329A EP 0376914 A3 EP0376914 A3 EP 0376914A3
Authority
EP
European Patent Office
Prior art keywords
pressure
line
oil
test
valve
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.)
Granted
Application number
EP19890890329
Other languages
German (de)
French (fr)
Other versions
EP0376914B1 (en
EP0376914A2 (en
Inventor
Albert Dipl.-Ing. Harrer
Franz Kagl
Günter Lunacek
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.)
Austrian Energy and Environment SGP Waagner Biro GmbH
Original Assignee
Austrian Energy and Environment SGP Waagner Biro 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
Application filed by Austrian Energy and Environment SGP Waagner Biro GmbH filed Critical Austrian Energy and Environment SGP Waagner Biro GmbH
Publication of EP0376914A2 publication Critical patent/EP0376914A2/en
Publication of EP0376914A3 publication Critical patent/EP0376914A3/en
Application granted granted Critical
Publication of EP0376914B1 publication Critical patent/EP0376914B1/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
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/18—Final actuators arranged in stator parts varying effective number of nozzles or guide conduits, e.g. sequentially operable valves 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
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/20—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted
    • F01D17/22—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted the operation or power assistance being predominantly non-mechanical
    • F01D17/26—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted the operation or power assistance being predominantly non-mechanical fluid, e.g. hydraulic
    • 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

Abstract

Verfahren zum Testen der einzelnen Ventile bei Dampfturbinen mit Einzel- oder Gruppenventilregelung, wobei die Ventile jeweils mit einem hydraulischen Stellantrieb (10) versehen sind und die Zuführleitung (41) für das Drucköl des zu testenden Ventils (5) an eine Test-Regelleitung (11) angeschlossen wird, in der ein von der automatischen Regelleitung unabhängig einstellbarer Öldruck erzeugt wird, und bei welchem durch Rückmeldung von Vergleichseinrichtungen, wie z.B. Stellwertanzeiger, die Funktionsweise des jeweiligen Ventils (5) überprüft wird, wobei der Öldruck in der Test-Regelleitung (11) mit dem Öldruck in der Zuführleitung (4') abgeglichen und erst nach erfolgtem Abgleich die Verbindung zwischen Zuführleitung (4') und der Test-Regelleitung (11) geöffnet wird, sowie Testeinrichtung zur Durchführung des Verfahrens, welche mit einer Abgleicheinrichtung (12) zur Angleichung des Druckes in der Testregelleitung (11) an den in der Drucköl-Zuführleitung (4) vor dem Umschaltventil (3) herrschenden Druck versehen ist, und bei der in jeder Zuführleitung (4') für das Drucköl zu den einzelnen Stellantrieben (10) ein Umschaltventil (3) angeordnet ist, welches bis zur Rückmeldung gleichen Druckes in den Zuführleitungen (4, 4') und in der Testleitung 11 gesperrt ist. Procedure for testing the individual valves in steam turbines with Individual or group valve control, the valves with each a hydraulic actuator (10) are provided and Supply line (41) for the pressure oil of the valve (5) to be tested to a Test control line (11) is connected, in which one of the automatic control line independently adjustable oil pressure is generated, and in which by feedback from Comparison devices, e.g. Position indicator, the Functionality of the respective valve (5) is checked, wherein the oil pressure in the test control line (11) with the oil pressure in the Feed line (4 ') adjusted and only after the adjustment Connection between the feed line (4 ') and the test control line (11) is opened, and test facility for carrying out the Method, which with an adjustment device (12) for Alignment of the pressure in the test control line (11) to that in the Pressure oil supply line (4) in front of the changeover valve (3) Pressure is provided, and in which in each feed line (4 ') for the Pressure oil to the individual actuators (10) a changeover valve (3) is arranged, which until the feedback of the same pressure in the feed lines (4, 4 ') and in the test line 11 is blocked.

EP19890890329 1988-12-28 1989-12-20 Testing method of individual valves of steam turbines and testing device for carrying out the method Expired - Lifetime EP0376914B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT3177/88 1988-12-28
AT317788A AT400172B (en) 1988-12-28 1988-12-28 METHOD FOR TESTING AND TESTING DEVICE FOR STEAM TURBINE CONTROL VALVES

Publications (3)

Publication Number Publication Date
EP0376914A2 EP0376914A2 (en) 1990-07-04
EP0376914A3 true EP0376914A3 (en) 1991-07-24
EP0376914B1 EP0376914B1 (en) 1994-04-13

Family

ID=3546539

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890890329 Expired - Lifetime EP0376914B1 (en) 1988-12-28 1989-12-20 Testing method of individual valves of steam turbines and testing device for carrying out the method

Country Status (3)

Country Link
EP (1) EP0376914B1 (en)
AT (1) AT400172B (en)
DE (1) DE58907465D1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59005267D1 (en) * 1989-12-21 1994-05-11 Asea Brown Boveri Actuator for a feed valve.
DE59103692D1 (en) * 1991-01-25 1995-01-12 Asea Brown Boveri Connection valve and hydraulic safety and power oil system in which the connection valve is used.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB795345A (en) * 1953-11-24 1958-05-21 Bbc Brown Boveri & Cie Arrangement for testing the overspeed safety devices of steam turbines
US2998017A (en) * 1960-03-28 1961-08-29 Gen Electric Emergency governor exerciser
US3382880A (en) * 1965-12-01 1968-05-14 Gen Electric Automatic trip test system
US4019390A (en) * 1976-04-22 1977-04-26 Westinghouse Electric Corporation System and method for complete on line testing of a mechanical overspeed trip channel associated with an electrohydraulic emergency trip system for a turbine power plant
US4059960A (en) * 1976-03-11 1977-11-29 Westinghouse Electric Corporation Method and apparatus for testing the movability of valve plugs
US4343454A (en) * 1980-06-26 1982-08-10 General Electric Company Apparatus for individual isolation of hydraulically actuated valves

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH514067A (en) * 1970-03-31 1971-10-15 Bbc Brown Boveri & Cie Method and device for testing monitoring bodies on a turbine system
US3682564A (en) * 1971-04-26 1972-08-08 Laval Turbine Turbine overspeed trip system with testing mechanism

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB795345A (en) * 1953-11-24 1958-05-21 Bbc Brown Boveri & Cie Arrangement for testing the overspeed safety devices of steam turbines
US2998017A (en) * 1960-03-28 1961-08-29 Gen Electric Emergency governor exerciser
US3382880A (en) * 1965-12-01 1968-05-14 Gen Electric Automatic trip test system
US4059960A (en) * 1976-03-11 1977-11-29 Westinghouse Electric Corporation Method and apparatus for testing the movability of valve plugs
US4019390A (en) * 1976-04-22 1977-04-26 Westinghouse Electric Corporation System and method for complete on line testing of a mechanical overspeed trip channel associated with an electrohydraulic emergency trip system for a turbine power plant
US4343454A (en) * 1980-06-26 1982-08-10 General Electric Company Apparatus for individual isolation of hydraulically actuated valves

Also Published As

Publication number Publication date
AT400172B (en) 1995-10-25
DE58907465D1 (en) 1994-05-19
ATA317788A (en) 1995-02-15
EP0376914B1 (en) 1994-04-13
EP0376914A2 (en) 1990-07-04

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