IT1255693B - Metodo per prevedere la transizione ottimale tra un funzionamento a pressione costante e un funzionamento a pressione variabile - Google Patents

Metodo per prevedere la transizione ottimale tra un funzionamento a pressione costante e un funzionamento a pressione variabile

Info

Publication number
IT1255693B
IT1255693B ITMI922238A ITMI922238A IT1255693B IT 1255693 B IT1255693 B IT 1255693B IT MI922238 A ITMI922238 A IT MI922238A IT MI922238 A ITMI922238 A IT MI922238A IT 1255693 B IT1255693 B IT 1255693B
Authority
IT
Italy
Prior art keywords
pressure
transition
pressure operation
action chamber
mode
Prior art date
Application number
ITMI922238A
Other languages
English (en)
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of ITMI922238A0 publication Critical patent/ITMI922238A0/it
Publication of ITMI922238A1 publication Critical patent/ITMI922238A1/it
Application granted granted Critical
Publication of IT1255693B publication Critical patent/IT1255693B/it

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
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K13/00—General layout or general methods of operation of complete plants
    • F01K13/02—Controlling, e.g. stopping or starting

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

Per migliorare il rendimento operativo di una centrale a turbina a vapore ad arco parziale durante variazioni della potenza d'uscita con transizione tra il modo a pressione costante e il modo a pressione variabile. La pressione ottimale del punto di transizione viene convertita in una percentuale corrispondente della differenza di pressione tra coppie adiacenti di punti di valvola. La pressione della camera ad azione in corrispondenza di ogni punto di valvola viene quindi usata per calcolare una pressione corrispondente alla camera ad azione per la transizione dal primo al secondo modo di base alla differenza di pressione percentuale. Le pressioni della camera ad azione calcolate per la transizione vengono confrontate con valori misurati della pressione della camera ad azioni e la transizione forzata avviene quando il valore misurato è sostanzialmente eguale alla pressione di transizione calcolata.
ITMI922238A 1991-10-07 1992-09-29 Metodo per prevedere la transizione ottimale tra un funzionamento a pressione costante e un funzionamento a pressione variabile IT1255693B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/772,505 US5136848A (en) 1991-10-07 1991-10-07 Method for predicting the optimum transition between constant and sliding pressure operation

Publications (3)

Publication Number Publication Date
ITMI922238A0 ITMI922238A0 (it) 1992-09-29
ITMI922238A1 ITMI922238A1 (it) 1994-03-29
IT1255693B true IT1255693B (it) 1995-11-10

Family

ID=25095290

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI922238A IT1255693B (it) 1991-10-07 1992-09-29 Metodo per prevedere la transizione ottimale tra un funzionamento a pressione costante e un funzionamento a pressione variabile

Country Status (5)

Country Link
US (1) US5136848A (it)
JP (1) JPH0774603B2 (it)
CA (1) CA2079920A1 (it)
ES (1) ES2064227B1 (it)
IT (1) IT1255693B (it)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5333457A (en) * 1991-10-07 1994-08-02 Westinghouse Electric Corporation Operation between valve points of a partial-arc admission turbine
IL121546A (en) * 1997-08-14 2003-07-06 Arie Raz Compression and condensation of turbine exhaust steam
US6353804B1 (en) * 1999-04-09 2002-03-05 General Electric Company Method for statistically predicting equipment performance
US6386829B1 (en) 1999-07-02 2002-05-14 Power Technology, Incorporated Multi-valve arc inlet for steam turbine
US6484503B1 (en) 2000-01-12 2002-11-26 Arie Raz Compression and condensation of turbine exhaust steam
AR029828A1 (es) * 2001-07-13 2003-07-16 Petrobras En S A Metodo para la regulacion primaria de frecuencia en turbinas de vapor de ciclo combinado
DK1365110T3 (da) * 2002-05-22 2009-04-20 Siemens Ag Fremgangsmåde og apparat til drift af et dampkraftanlæg, især i dellastområdet
RU2258146C1 (ru) * 2003-12-30 2005-08-10 ОАО "Инженерный Центр ЕЭС" Система автоматического регулирования мощности энергоблока
RU2278321C1 (ru) * 2004-12-01 2006-06-20 Николай Васильевич Василенко Способ автоматического регулирования технологическими процессами в прямоточных котлоагрегатах
JP4723884B2 (ja) * 2005-03-16 2011-07-13 株式会社東芝 タービン起動制御装置およびその起動制御方法
RU2293934C2 (ru) * 2005-12-26 2007-02-20 Борис Алексеевич Кузнецов Способ получения двухслойного льда
RU2416759C1 (ru) * 2009-12-01 2011-04-20 Закрытое акционерное общество "Е4-СибКОТЭС" Способ автоматического регулирования взаимосвязанных процессов нагрузки прямоточного котла в условиях технологических ограничений
US8813498B2 (en) * 2010-06-18 2014-08-26 General Electric Company Turbine inlet condition controlled organic rankine cycle
CN102135021B (zh) * 2011-02-25 2013-12-25 华东理工大学 一种工业抽汽冷凝式蒸汽轮机的轴功率预测方法
US9328633B2 (en) 2012-06-04 2016-05-03 General Electric Company Control of steam temperature in combined cycle power plant
CN105134312B (zh) * 2015-08-17 2016-10-26 西安西热节能技术有限公司 一种亚临界喷嘴配汽汽轮机运行阀位确定方法
CN106761963A (zh) * 2016-12-01 2017-05-31 华电能源股份有限公司哈尔滨第三发电厂 一种汽轮机控制运行方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4088875A (en) * 1975-11-04 1978-05-09 Westinghouse Electric Corp. Optimum sequential valve position indication system for turbine power plant
MX145586A (es) * 1978-03-24 1982-03-08 Westinghouse Electric Corp Mejoras en sistema para minimizar las perdidas por estrangulamiento de valvula en una planta de energia
US4297848A (en) * 1979-11-27 1981-11-03 Westinghouse Electric Corp. Method of optimizing the efficiency of a steam turbine power plant
JPS5685507A (en) * 1979-12-17 1981-07-11 Hitachi Ltd Monitoring method of performance of steam turbine plant
US4320625A (en) * 1980-04-30 1982-03-23 General Electric Company Method and apparatus for thermal stress controlled loading of steam turbines
US4891948A (en) * 1983-12-19 1990-01-09 General Electric Company Steam turbine-generator thermal performance monitor
US4819435A (en) * 1988-07-11 1989-04-11 Westinghouse Electric Corp. Method for reducing valve loops for improving stream turbine efficiency
US4888954A (en) * 1989-03-30 1989-12-26 Westinghouse Electric Corp. Method for heat rate improvement in partial-arc steam turbine

Also Published As

Publication number Publication date
ES2064227R (it) 1996-11-16
ES2064227A2 (es) 1995-01-16
CA2079920A1 (en) 1993-04-08
ITMI922238A1 (it) 1994-03-29
ES2064227B1 (es) 1997-07-01
JPH0774603B2 (ja) 1995-08-09
US5136848A (en) 1992-08-11
JPH05195711A (ja) 1993-08-03
ITMI922238A0 (it) 1992-09-29

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