EP0088756A1 - Procede et installation pour diminuer les pertes au demarrage et a la mise a l'arret, pour augmenter la puissance disponible et pour ameliorer la facilite de reglage d'une centrale thermique. - Google Patents

Procede et installation pour diminuer les pertes au demarrage et a la mise a l'arret, pour augmenter la puissance disponible et pour ameliorer la facilite de reglage d'une centrale thermique.

Info

Publication number
EP0088756A1
EP0088756A1 EP82900106A EP82900106A EP0088756A1 EP 0088756 A1 EP0088756 A1 EP 0088756A1 EP 82900106 A EP82900106 A EP 82900106A EP 82900106 A EP82900106 A EP 82900106A EP 0088756 A1 EP0088756 A1 EP 0088756A1
Authority
EP
European Patent Office
Prior art keywords
pressure
steam
power
heat
power plant
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
EP82900106A
Other languages
German (de)
English (en)
Other versions
EP0088756B1 (fr
Inventor
Heinz Spliethoff
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.)
Saarbergwerke AG
Original Assignee
Saarbergwerke AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6142158&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0088756(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Saarbergwerke AG filed Critical Saarbergwerke AG
Priority to AT82900106T priority Critical patent/ATE18931T1/de
Publication of EP0088756A1 publication Critical patent/EP0088756A1/fr
Application granted granted Critical
Publication of EP0088756B1 publication Critical patent/EP0088756B1/fr
Expired 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
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
    • F01K3/004—Accumulation in the liquid branch of the circuit

Definitions

  • the invention relates to a method and a system for reducing start-up and shutdown losses, for increasing the usable power and for improving the regulatability of a thermal power plant.
  • start-up and shutdown times are up to one hour and more, depending on the state of the plant.
  • many conventional power plant units have to be switched off regularly on weekends and at night. the so that the amount of heat released during these start-up and shutdown periods makes up a significant proportion of the total thermal energy converted.
  • Control deviations of the electrical power of a power plant block from the power setpoint can only be compensated for with the time behavior of steam generation and the limited storage capacity of the steam generator, which decisively determines the control capacity of the power plant block.
  • the invention has for its object to improve the economy of a power plant by reducing the start-up and start-up losses and increasing its usable performance. Another object of the invention is to improve the controllability of a power plant.
  • This object is achieved in that one or more pressure heat stores are integrated into the water-steam cycle of the power station, which are recharged by supplying excess heat generated in the power station and increased heat demand by releasing storage heat in the water-steam cycle .
  • the pressure heat accumulators are charged with start-up steam or shutdown steam of the power plant during the start-up and shutdown processes. During periods of high load or periods of increased power requirements for electrical power generation, the pressure heat stores return their charging energy to the water / steam cycle of the power plant.
  • control deviations of the electrical power from the power setpoint of a power plant unit are at least partially compensated for by changes in the charging or discharging flow of the pressure heat accumulators.
  • the power block the steam flows successively through a high pressure turbine 31, ei ⁇ nen intermediate superheater 34, an intermediate pressure turbine 32, and a double-flow low pressure turbine 33.
  • the sator in a Konden ⁇ 1 condensate is ump through condensate p '2 and low- Medium-pressure preheaters 4a to 4n are fed into a feed water tank 6 and from there via a feed water pump 7 back into the steam generator.
  • a bypass condensate store is designated.
  • a pressure heat accumulator 21 is connected to the condensate system on the water side via lines 23, 26 and a pump 22 in shunt.
  • a pressure line after the discharge pump 22 opens between the last medium-pressure low-pressure preheater 4n and in front of the feed water tank 6 into a condensate line 30.
  • the pressure line can also lead directly into the feed water tank 6.
  • the pressure heat accumulator 21 is connected via a line 27 to the medium pressure or reheater network of the power station block and / or to other economically suitable steam networks and steam systems with a higher steam pressure than it
  • Steam is charged from the medium-pressure reheater network to charge the pressure heat accumulator 21 during an arrival or departure Via line 27, possibly with the interposition of a reducing station, introduced into the pressure heat store 21, which is pre-filled with cold condensate, and the condensate filling is heated.
  • the anode shutdown steam heats a condensate flow in a regulated or unregulated manner directly or via a steam reducing station to a boiling water or hot water flow with which the pressure heat accumulator 21 is charged.
  • the pressure heat accumulator 21 In power mode, the pressure heat accumulator 21 is charged with hot condensate via the low pressure / medium pressure preheaters 4a to 4n in low or partial load periods and the hot condensate flow from the same withdrawal 28, which also supplies the feed water tank 6 with steam, in a mixing preheating and degassing stage, not shown in the figure, immediately warmed up immediately before the pressure heat accumulator 21.
  • hot condensate from the pressure heat accumulator is mixed via line 26, the expansion vessel 24 and the discharge pump 22, to the condensate flowing in line 30 to the feed water tank 6. If the pressure heat accumulator 21 is operated temporarily with increased pressure compared to the feed water tank 6, the hot storage discharge current in the expansion vessel 24 can be expanded to the pressure in the feed water tank 6 and introduced into the condensate line 30.
  • the expansion steam flow is led via a line 35 directly into the feed water tank 6 or into a steam line 25 leading to the feed water tank 6.
  • thermodynamic states of the discharge current and the feed water tank content are achieved.
  • the expansion vessel 24 and the line 35 can be dispensed with and the discharge current can be conducted directly into the condensate line 30 with the enthalpy of the pressure heat storage content.
  • a control safety circuit is therefore necessary which allows evaporation in the condensate line 30 and on the feed prevents water tank entry.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Control Of Turbines (AREA)

Abstract

Selon ce procédé des accumulateurs de chaleur sous pression sont incorporés dans le circuit de vapeur de la centrale thermique. Ces accumulateurs sont chargés par un apport de chaleur résiduelle produite dans la centrale, par exemple pendant le démarrage ou la mise à l'arrêt ou pendant des périodes de production d'électricité réduite, et sont déchargés, lors d'une demande accrue de chaleur, par dégagement de la chaleur accumulée dans le circuit de vapeur-eau. Les différences de la puissance électrique fournie par la centrale sont compensées par un changement du courant de charge ou de décharge des accumulateurs de chaleur. Dans l'installation pour la mise en oeuvre du procédé les accumulateurs sont montés en dérivation, côté eau, avec le circuit de condensation et sont reliés, côté vapeur, avec le réseau de moyenne pression ou du surchauffeur intermédiaire du circuit de vapeur d'eau, ou avec les prises de vapeur des turbines à moyenne ou basse pression.
EP82900106A 1981-09-19 1981-12-23 Procede et installation pour diminuer les pertes au demarrage et a la mise a l'arret, pour augmenter la puissance disponible et pour ameliorer la facilite de reglage d'une centrale thermique Expired EP0088756B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82900106T ATE18931T1 (de) 1981-09-19 1981-12-23 Verfahren und anlage zur verringerung der anund abfahrverluste, zur erhoehung der nutzbaren leistung und zur verbesserung der regelfaehigkeit eines waermekraftwerkes.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3137371 1981-09-19
DE3137371A DE3137371C2 (de) 1981-09-19 1981-09-19 Anlage zur Verringerung der An- und Abfahrverluste, zur Erhöhung der nutzbaren Leistung und zur Verbesserung der Regelfähigkeit eines Wärmekraftwerkes

Publications (2)

Publication Number Publication Date
EP0088756A1 true EP0088756A1 (fr) 1983-09-21
EP0088756B1 EP0088756B1 (fr) 1986-04-02

Family

ID=6142158

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82900106A Expired EP0088756B1 (fr) 1981-09-19 1981-12-23 Procede et installation pour diminuer les pertes au demarrage et a la mise a l'arret, pour augmenter la puissance disponible et pour ameliorer la facilite de reglage d'une centrale thermique

Country Status (6)

Country Link
US (1) US4549401A (fr)
EP (1) EP0088756B1 (fr)
JP (1) JPS58501473A (fr)
AT (1) ATE18931T1 (fr)
DE (1) DE3137371C2 (fr)
WO (1) WO1983001090A1 (fr)

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DE4124678A1 (de) * 1990-08-21 1992-02-27 Abb Patent Gmbh Verfahren und einrichtung zur wiederherstellung der turbinenstellreserve nach dem ausregeln einer leistungs-sollwertaenderung in einem dampfkraftwerksblock
JP2006233931A (ja) * 2005-02-28 2006-09-07 Miura Co Ltd ボイラ駆動電力供給システム
US20090192530A1 (en) 2008-01-29 2009-07-30 Insightra Medical, Inc. Fortified mesh for tissue repair
US8616323B1 (en) 2009-03-11 2013-12-31 Echogen Power Systems Hybrid power systems
WO2010121255A1 (fr) 2009-04-17 2010-10-21 Echogen Power Systems Système et procédé pour gérer des problèmes thermiques dans des moteurs à turbine à gaz
MX2012000059A (es) 2009-06-22 2012-06-01 Echogen Power Systems Inc Sistema y metodo para manejar problemas termicos en uno o mas procesos industriales.
US9316404B2 (en) 2009-08-04 2016-04-19 Echogen Power Systems, Llc Heat pump with integral solar collector
US8613195B2 (en) 2009-09-17 2013-12-24 Echogen Power Systems, Llc Heat engine and heat to electricity systems and methods with working fluid mass management control
US8813497B2 (en) 2009-09-17 2014-08-26 Echogen Power Systems, Llc Automated mass management control
US8869531B2 (en) 2009-09-17 2014-10-28 Echogen Power Systems, Llc Heat engines with cascade cycles
US8096128B2 (en) 2009-09-17 2012-01-17 Echogen Power Systems Heat engine and heat to electricity systems and methods
US8616001B2 (en) * 2010-11-29 2013-12-31 Echogen Power Systems, Llc Driven starter pump and start sequence
US8857186B2 (en) 2010-11-29 2014-10-14 Echogen Power Systems, L.L.C. Heat engine cycles for high ambient conditions
US8783034B2 (en) 2011-11-07 2014-07-22 Echogen Power Systems, Llc Hot day cycle
US9062898B2 (en) 2011-10-03 2015-06-23 Echogen Power Systems, Llc Carbon dioxide refrigeration cycle
PL2589761T3 (pl) * 2011-11-03 2017-10-31 General Electric Technology Gmbh Elektrownia parowa z akumulatorem ciepła i sposób eksploatacji elektrowni parowej
CN104302975B (zh) 2012-01-19 2016-11-16 西门子公司 用于发电厂的辅助蒸汽生成器系统
BR112015003646A2 (pt) 2012-08-20 2017-07-04 Echogen Power Systems Llc circuito de fluido de trabalho supercrítico com uma bomba de turbo e uma bomba de arranque em séries de configuração
US9341084B2 (en) 2012-10-12 2016-05-17 Echogen Power Systems, Llc Supercritical carbon dioxide power cycle for waste heat recovery
US9118226B2 (en) 2012-10-12 2015-08-25 Echogen Power Systems, Llc Heat engine system with a supercritical working fluid and processes thereof
US9322295B2 (en) 2012-10-17 2016-04-26 General Electric Company Thermal energy storage unit with steam and gas turbine system
US9376962B2 (en) 2012-12-14 2016-06-28 General Electric Company Fuel gas heating with thermal energy storage
WO2014117074A1 (fr) 2013-01-28 2014-07-31 Echogen Power Systems, L.L.C. Procédé de commande d'un robinet de débit d'une turbine de travail au cours d'un cycle de rankine supercritique au dioxyde de carbone
US9638065B2 (en) 2013-01-28 2017-05-02 Echogen Power Systems, Llc Methods for reducing wear on components of a heat engine system at startup
AU2014225990B2 (en) 2013-03-04 2018-07-26 Echogen Power Systems, L.L.C. Heat engine systems with high net power supercritical carbon dioxide circuits
US10570777B2 (en) 2014-11-03 2020-02-25 Echogen Power Systems, Llc Active thrust management of a turbopump within a supercritical working fluid circuit in a heat engine system
US10883388B2 (en) 2018-06-27 2021-01-05 Echogen Power Systems Llc Systems and methods for generating electricity via a pumped thermal energy storage system
US11435120B2 (en) 2020-05-05 2022-09-06 Echogen Power Systems (Delaware), Inc. Split expansion heat pump cycle
CA3201373A1 (fr) 2020-12-09 2022-06-16 Timothy Held Systeme de stockage d'energie thermique electrique a trois reservoirs

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DE2907068C2 (de) * 1978-05-09 1983-09-15 BBC Aktiengesellschaft Brown, Boveri & Cie., 5401 Baden, Aargau Dampfkraftanlage für Grundlastbetrieb mit Einrichtung zur Deckung von Lastspitzen

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Also Published As

Publication number Publication date
DE3137371A1 (de) 1983-04-14
JPS58501473A (ja) 1983-09-01
ATE18931T1 (de) 1986-04-15
EP0088756B1 (fr) 1986-04-02
WO1983001090A1 (fr) 1983-03-31
US4549401A (en) 1985-10-29
DE3137371C2 (de) 1984-06-20

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