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GB1529935A - Safety system for a steam turbine installation - Google Patents

Safety system for a steam turbine installation

Info

Publication number
GB1529935A
GB1529935A GB4250976A GB4250976A GB1529935A GB 1529935 A GB1529935 A GB 1529935A GB 4250976 A GB4250976 A GB 4250976A GB 4250976 A GB4250976 A GB 4250976A GB 1529935 A GB1529935 A GB 1529935A
Authority
GB
United Kingdom
Prior art keywords
valve
turbine
stage
signal
close
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
Application number
GB4250976A
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.)
BBC Brown Boveri AG Switzerland
BBC Brown Boveri France SA
Original Assignee
BBC Brown Boveri AG Switzerland
BBC Brown Boveri France SA
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 BBC Brown Boveri AG Switzerland, BBC Brown Boveri France SA filed Critical BBC Brown Boveri AG Switzerland
Publication of GB1529935A publication Critical patent/GB1529935A/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K9/00Plants characterised by condensers arranged or modified to co-operate with the engines
    • F01K9/006Vacuum-breakers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D21/00Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
    • F01D21/02Shutting-down responsive to overspeed
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/16Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type
    • F01K7/22Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type the turbines having inter-stage steam heating
    • F01K7/24Control or safety means specially adapted therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Control Of Turbines (AREA)

Abstract

1529935 Steam turbines BBC BROWN BOVERI & CO Ltd 13 Oct 1976 [15 Oct 1975] 42509/76 Heading FIT [Also in Division F4] In a steam turbine installation, when the load on two-stage turbine 4, 6 is dumped a safety and regulating device 11 calls for closure of governor valve 3 and interceptor valve 7 via signals 14, 16, and if valve 3 fails to close then logic circuit 27 responds to the disparity between signal 14 and a signal 26 from a sensor 25 monitoring the pressure drop across stage 4 of the turbine and after a delay of 0.2-0.5 secs the circuit trips device 11. Upon being tripped, device 11 calls for closure of stopvalves 2, 8 and partial opening of vacuum break valve 20 via signals 12, 18, 21. If valves 2, 8 close, then valve 20 is reclosed after the vacuum has been lowered a small amount. If, however, sensor 25 still detects a pressure differential 1-5 secs after device 11 is tripped then the circuit 27 provides a signal 29 which serves (a) to fully open the vacuum break valve 20, (b) to open valve 34 to admit water to cooling nozzles in the second stage of the turbine, (c) to close down the steam generator (51) which may be part of a nuclear power plant. The device 11 may also be tripped by sensors monitoring other parameters, e.g. bearing temp. A second logic circuit 37 is included which receives signals 16, 18 and a signal 36 from a sensor 35 monitoring the pressure drop across the second stage of the turbine and which responds similarly to circuit 27 if valves 7, 8 fail to close.
GB4250976A 1975-10-15 1976-10-13 Safety system for a steam turbine installation Expired GB1529935A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1334675A CH594811A5 (en) 1975-10-15 1975-10-15

Publications (1)

Publication Number Publication Date
GB1529935A true GB1529935A (en) 1978-10-25

Family

ID=4391618

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4250976A Expired GB1529935A (en) 1975-10-15 1976-10-13 Safety system for a steam turbine installation

Country Status (7)

Country Link
CH (1) CH594811A5 (en)
DE (1) DE2550059C2 (en)
FR (1) FR2328107A1 (en)
GB (1) GB1529935A (en)
HU (1) HU175326B (en)
PL (1) PL108873B1 (en)
SE (1) SE411932B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009015260B4 (en) * 2009-04-01 2013-02-14 Areva Np Gmbh Device for phase separation of a multiphase fluid flow, steam turbine plant with such a device and associated operating method
DE102012023898A1 (en) * 2012-12-07 2014-06-12 Man Diesel & Turbo Se Method for operating plant for production of mechanical and electrical energy, has turbine in which steam is supplied and capacitor with closed vacuum breaker valve is evacuated
DE102016217216A1 (en) 2016-09-09 2018-03-15 Siemens Aktiengesellschaft Turbine system and method for operating a turbine system
DE102018209203B4 (en) * 2018-06-08 2020-06-18 Philipp Lücke Low pressure steam turbine plant and operating method for a low pressure steam turbine plant

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE198119C (en) *
DE383249C (en) * 1922-08-08 1923-10-11 Bbc Brown Boveri & Cie Securing steam turbines, in particular dual-pressure and exhaust steam turbines
US2285208A (en) * 1940-04-10 1942-06-02 Gen Electric Automatic turbine control system
DE1023049B (en) * 1952-09-27 1958-01-23 Bbc Brown Boveri & Cie Regulation of a steam turbine system with reheating
DE1030356B (en) * 1956-10-19 1958-05-22 Siemens Ag Turbine system with reheating
DE1933473C3 (en) * 1969-07-02 1974-02-07 Siemens Ag, 1000 Berlin U. 8000 Muenchen Interception device for steam turbines
DE2022397C3 (en) * 1970-05-08 1974-08-08 Kraftwerk Union Ag, 4330 Muelheim Interception device for steam turbines
AT326807B (en) * 1973-04-17 1975-12-29 Boehler & Co Ag Geb PUNCH KNIVES

Also Published As

Publication number Publication date
FR2328107A1 (en) 1977-05-13
FR2328107B1 (en) 1980-09-12
CH594811A5 (en) 1978-01-31
SE7611271L (en) 1977-04-16
HU175326B (en) 1980-06-28
SE411932B (en) 1980-02-11
PL108873B1 (en) 1980-05-31
DE2550059C2 (en) 1990-01-04
DE2550059A1 (en) 1977-04-21

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee