WO1997018386A1 - Systeme et procede de realimentation par turbine a combustion de turbines existantes a vapeur faiblement surchauffee - Google Patents

Systeme et procede de realimentation par turbine a combustion de turbines existantes a vapeur faiblement surchauffee Download PDF

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Publication number
WO1997018386A1
WO1997018386A1 PCT/US1996/015387 US9615387W WO9718386A1 WO 1997018386 A1 WO1997018386 A1 WO 1997018386A1 US 9615387 W US9615387 W US 9615387W WO 9718386 A1 WO9718386 A1 WO 9718386A1
Authority
WO
WIPO (PCT)
Prior art keywords
steam
turbine
superheat
gas
low
Prior art date
Application number
PCT/US1996/015387
Other languages
English (en)
Inventor
Michael Scot Briesch
Original Assignee
Westinghouse Electric Corporation
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 Corporation filed Critical Westinghouse Electric Corporation
Publication of WO1997018386A1 publication Critical patent/WO1997018386A1/fr

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Classifications

    • 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
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
    • F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
    • F01K23/106—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle with water evaporated or preheated at different pressures in exhaust boiler
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21D—NUCLEAR POWER PLANT
    • G21D5/00—Arrangements of reactor and engine in which reactor-produced heat is converted into mechanical energy
    • G21D5/04—Reactor and engine not structurally combined
    • G21D5/08—Reactor and engine not structurally combined with engine working medium heated in a heat exchanger by the reactor coolant
    • G21D5/12—Liquid working medium vaporised by reactor coolant
    • G21D5/16—Liquid working medium vaporised by reactor coolant superheated by separate heat source
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin

Definitions

  • the present invention relates to a system and method for repowering existing low superheat steam turbine systems, in particular, nuclear powered low superheat steam turbine systems.
  • FIG 1 is a diagram of a low superheat steam turbine system 10. These systems or similar systems have been used in nuclear power plant applications.
  • a nuclear reactor is the primary component of the steam generator 20 shown in Figure 1.
  • the nuclear reactor steam generator typically produces low superheat steam 22 having pressure ranging from 600 to 1000 pounds per square inch atmosphere (“psia”) and temperature about 600°F.
  • the low superheat steam 22 is expanded and converted into mechanical energy by a low superheat steam high pressure (“HP”) turbine 30.
  • Exhaust steam 32 from the HP turbine 30 is used to drive two or more low pressure (“LP”) turbines 40 and 50.
  • LP low pressure
  • the HP turbine 30 and series of LP steam turbines 40 and 50 are usually combined on one shaft 12 drive line in a tandem compound arrangemen .
  • the shaft 12 is also connected to a four pole electric generator 60 and the shaft 12 rotates at about 1800 revolutions per minute ("RPM") for 60Hz electric power systems (1500 RPM for 50Hz electric power systems) during normal operation.
  • RPM revolutions per minute
  • Two condensers 70 and 80 receive exhaust steam 42 and 52 from the LP steam turbines and generate condensed steam 72 and 82 which is piped back to the steam generator 20.
  • a water cooler 90 cycles water 92 and 94 to the condensers 70 and 80 to remove heat from the exhaust steam 42 and 52.
  • the water cooler 90 may be a cooling tower, lake, or other source of cooled water.
  • the low superheat steam HP turbine 30 of the low superheat steam turbine system 10 is replaced with a new superheat steam HP turbine capable of operation at modern steam conditions (pressure 1600 to 3600 psia, temperature 1000-1100°F) .
  • This second approach eliminates the inefficiency associated with the first approach, but utilizes less of the existing equipment of the turbine system 10.
  • the present invention provides an efficient combined cycle power plant system for repowering an existing low superheat steam turbine system.
  • the system and method of the invention provide low superheat steam for the low superheat turbine system from a superheat steam high pressure (“HP") turbine coupled to the turbine system.
  • the superheat steam HP turbine receives superheat steam, expands the steam, and generates low superheat steam at conditions suitable for the low superheat steam turbine system.
  • the superheat steam HP turbine is part of a combined cycle power plant system which includes a gas turbine and heat recovery steam generator ("HRSG") .
  • the gas turbine receives high temperature, compressed gas and generates mechanical energy and expanded exhaust gas.
  • the HRSG receives condensed steam and the expanded exhaust gas, extracts heat from the exhaust gas, applies the extracted heat to the condensed steam, and generates superheat steam at steam conditions suitable for the superheat steam HP turbine.
  • the HRSG also extracts further heat from the exhaust gas, applies the further extracted heat to the condensed steam and generates low superheat steam at steam conditions suitable for at least one low pressure (“LP”) steam turbine system of the low superheat steam turbine system.
  • LP low pressure
  • the low pressure steam turbine system includes at least one LP steam turbine which is coupled to the low superheat steam HP turbine through a common shaft.
  • Low superheat exhaust steam generated by the low superheat steam HP turbine is also directed to the at least one LP steam turbine.
  • the expansion of low superheat steam by both the low superheat steam HP turbine and the at least one LP steam turbine of the low superheat steam turbine system generates mechanical energy in the form of torque on the common shaft of the system.
  • the torque on the common shaft is converted to electrical energy by an electric generator which is also coupled to the common shaft of the low superheat steam turbine system.
  • the low superheat steam turbine system also includes at least condenser for condensing the exhaust generated by the at least one LP steam turbine and a water cooler for providing cool water to the condenser.
  • the combined cycle power plant also includes an electric generator.
  • the electric generator is coupled to a common shaft of the power plant to which the superheat steam HP turbine and gas turbine are also coupled.
  • the superheat steam HP turbine and gas turbine both generate mechanical energy in the form of torque on the common shaft when they expand superheat steam and high temperature compressed gas, respectively.
  • the condensed steam generated by at least one condenser of the low superheat steam turbine system is provided to the heat recovery steam generator of the combined cycle power plant.
  • the heat recovery steam generator applies heat it extracts from the expanded exhaust gas to the condensed steam to generate high superheat steam and low superheat steam.
  • Figure 1 is a diagram illustrative of a prior art low superheat steam turbine system.
  • Figure 2 is a diagram of a preferred embodiment of a combined cycle repowered low superheat steam turbine system.
  • FIG. 2 A preferred embodiment of a repowered low superheat steam turbine system 100 is presented with reference to Figure 2.
  • the system 100 includes a turbine system similar to the system shown in Figure 1 except that a combined cycle power plant 200 replaces the steam generator 20.
  • the system shown in Figure 2 includes a low superheat steam HP turbine 30, series of LP steam turbines 40 and 50, condensers 70 and 80, electric generator 60 and water cooler 90 of an existing low superheat steam turbine system.
  • the combined cycle power plant 200 includes a gas turbine 130 (gas cycle) and superheat steam HP turbine 140 (steam cycle) .
  • the gas turbine 130 and superheat steam HP turbine 140 are linked together to form a combined cycle power plant by a Heat Recovery Steam Generator ("HRSG") 120.
  • HRSG Heat Recovery Steam Generator
  • Low superheat exhaust steam 142 at the primitive steam conditions for the original low superheat steam HP turbine 30 of the low superheat steam turbine system 10 is generated by the combined cycle power plant 200.
  • low pressure steam 124 at the steam conditions suitable for the series of LP steam turbines 40 and 50 is generated by the combined cycle power plant 200.
  • the combined cycle power plant 200 includes compressor 150, a combustor 110, gas turbine 130, HRSG 120, HP steam turbine 140, and an electric generator 160.
  • the superheat steam HP turbine 140, electric generator 160, compressor 150 and gas turbine 130 are connected on one shaft line 180.
  • atmospheric gas is provided to the compressor 150 from the air inlet 170.
  • the compressor generates compressed gas 152 from the atmospheric gas.
  • the combustor 110 receives fossil fuels (not shown) and the compressed gas 152 and generates high temperature gas 112.
  • the gas turbine 130 expands the high temperature, compressed gas 112 and generates mechanical energy in the form of torque on the shaft 180 and expanded superheat exhaust gas 132.
  • the HRSG receives the expanded superheat exhaust gas 132 from the gas turbine 130 and condensed steam 82 from the pair of condensers 70 and 80 and extracts heat from the expanded exhaust gas 132 in a multi-stage process.
  • heat is extracted from the expanded exhaust gas 132 and applied to condensed steam 82 to generate superheat steam 122 at steam conditions suitable for the modern superheat steam HP turbine 140, i.e., superheat steam 122 with pressure in the range of 1000 psia to 3600 psia and temperature about 1000-1100°F.
  • the superheat steam HP turbine 140 receives the superheat steam 122 from the HRSG 120 and generates mechanical energy in the form of torque on the shaft 180 and low superheat exhaust steam 142.
  • the superheat steam HP turbine 140 is a high efficiency turbine which operates at modern steam turbine pressures and temperatures and rotates at 3600 or 3000 RPM.
  • the low superheat exhaust steam 142 generated by the superheat steam HP turbine 140 is at steam conditions suitable for the low superheat steam HP turbine 30 of the low superheat steam turbine system 10.
  • the low superheat steam 142 is provided to the inlet of the low superheat steam HP turbine 30 via a high efficiency thermal piping (not shown) .
  • the low superheat steam HP turbine 30 expands the low superheat steam 142 and generates mechanical energy and low superheat exhaust steam 32 used by the series of LP steam turbines 40 and 50.
  • the combined cycle system of the gas turbine 130 and superheat steam HP turbine 140 provide the steam necessary for the powering or repowering of a low superheat steam turbine system.
  • the electric generator 160 converts the torque on the shaft 180 generated by the superheat steam HP turbine 140 and gas turbine 130 into electric energy.
  • the electric generator 160 is a two pole electric generator.
  • the gas turbine, HRSG 120, and superheat steam HP turbine 140 thus, form an efficient combined cycle power plant which generates electric energy and low superheat exhaust steam at steam conditions suitable for both the low superheat steam HP turbine 30 and series of LP steam turbines 70 and 80 of the low superheat steam turbine 10 (to power or repower the low superheat steam turbine system) .

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Plasma & Fusion (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Mechanical Engineering (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

Procédé et système permettant de fournir de la vapeur à une turbine (30, 40, 50) à vapeur faiblement surchauffée. Une centrale électrique (100) à cycle combiné comprenant une turbine à gaz (130) et une turbine à vapeur surchauffée (140) couplées ensemble par un générateur de vapeur (120) à récupération de chaleur génère de la vapeur (142) pour le système de turbine (30, 40, 50) à vapeur faiblement surchauffée à partir de la vapeur d'échappement surchauffée détendue, générée par la turbine à vapeur surchauffée (140).
PCT/US1996/015387 1995-11-14 1996-09-26 Systeme et procede de realimentation par turbine a combustion de turbines existantes a vapeur faiblement surchauffee WO1997018386A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US55743895A 1995-11-14 1995-11-14
US08/557,438 1995-11-14

Publications (1)

Publication Number Publication Date
WO1997018386A1 true WO1997018386A1 (fr) 1997-05-22

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WO (1) WO1997018386A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1111198A2 (fr) * 1999-12-23 2001-06-27 ALSTOM (Schweiz) AG Méthode de rééquipement d'un système de production de vapeur saturée avec au moins un groupe turbo à vapeur et centrale à vapeur ainsi rééquipée
WO2002084080A1 (fr) * 2001-04-09 2002-10-24 Alstom (Switzerland) Ltd Centrale thermique a vapeur avec complement d'equipement et procede de post-equipement d'une centrale thermique a vapeur
EP2551475A2 (fr) 2011-07-28 2013-01-30 Babcock Borsig Steinmüller GmbH Retrofitting of a nuclear power plant
WO2021160367A1 (fr) * 2020-02-11 2021-08-19 Siemens Aktiengesellschaft Renouvellement d'installation de turbine à vapeur, et installation associée

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4103228A1 (de) * 1991-02-02 1992-08-06 Radebeul Energie Umwelt Verfahren zum betreiben von kraftwerken

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4103228A1 (de) * 1991-02-02 1992-08-06 Radebeul Energie Umwelt Verfahren zum betreiben von kraftwerken

Non-Patent Citations (8)

* Cited by examiner, † Cited by third party
Title
"REPOWERING REAP THE BENEFITS OF ADVANCED TECHNOLOGIES", POWER, vol. 137, no. 7, 1 July 1993 (1993-07-01), pages 13 - 14, 16, 19 - 20, 22 - 24, XP000384634 *
"REPOWERING: OPTIONS PROLIFERATE FOR MANAGING GENERATION ASSESTS", POWER, vol. 138, no. 6, 1 June 1994 (1994-06-01), pages 33/34, 36, 38, 40, XP000448065 *
"World's first nuclear-to-coal conversion a success", POWER, vol. 136, no. 4, April 1992 (1992-04-01), NEW YORK US, pages 73 - 84, XP002027851 *
[1996]. 6 P. OSTI AS DE96006778;NTIS; INIS; US GOVT. PRINTING OFFICE DEP. CONFERENCE: ICONE 4: ASME/JSME INTERNATIONAL CONFERENCE ON NUCLEAR ENGINEERING, NEW ORLEANS, LA (UNITED STATES), 10-13 MAR 1996, FLUOR DANIEL, INC., IRVINE, CA (USA) *
DATABASE ENERGY US DEPARTMENT OF ENERGY OSTI, OAK RIDGE, TN, US; "Repowering analysis: Hanford Generating Project (HGP), Task Order Number 6.", XP002027852 *
DATABASE ENERGY US DEPARTMENT OF ENERGY OSTI, OAK RIDGE, TN, US; PATTI, F.J.: "Repowering analysis: Hanford Generating Project (HGP), Task Order Number 6.", XP002027853 *
FLUOR DANIEL, INC, IRVINE, CA (USA) *
JONES C: "RE-ENGINEERING POWERPLANTS", POWER, vol. 139, no. 8, 1 August 1995 (1995-08-01), pages 13/14, 16, 18, 20, XP000591298 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1111198A2 (fr) * 1999-12-23 2001-06-27 ALSTOM (Schweiz) AG Méthode de rééquipement d'un système de production de vapeur saturée avec au moins un groupe turbo à vapeur et centrale à vapeur ainsi rééquipée
EP1111198A3 (fr) * 1999-12-23 2003-05-21 ALSTOM (Switzerland) Ltd Méthode de rééquipement d'un système de production de vapeur saturée avec au moins un groupe turbo à vapeur et centrale à vapeur ainsi rééquipée
WO2002084080A1 (fr) * 2001-04-09 2002-10-24 Alstom (Switzerland) Ltd Centrale thermique a vapeur avec complement d'equipement et procede de post-equipement d'une centrale thermique a vapeur
US7458219B2 (en) 2001-04-09 2008-12-02 Alstom Technology Ltd. Steam power plant provided with a retrofit kit and method for retrofitting a steam power plant
EP2551475A2 (fr) 2011-07-28 2013-01-30 Babcock Borsig Steinmüller GmbH Retrofitting of a nuclear power plant
DE102011108711A1 (de) 2011-07-28 2013-01-31 Babcock Borsig Steinmüller Gmbh Umrüstung eines Kernkraftwerks
WO2021160367A1 (fr) * 2020-02-11 2021-08-19 Siemens Aktiengesellschaft Renouvellement d'installation de turbine à vapeur, et installation associée

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