EP0088756B1 - 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 Download PDFInfo
- Publication number
- EP0088756B1 EP0088756B1 EP82900106A EP82900106A EP0088756B1 EP 0088756 B1 EP0088756 B1 EP 0088756B1 EP 82900106 A EP82900106 A EP 82900106A EP 82900106 A EP82900106 A EP 82900106A EP 0088756 B1 EP0088756 B1 EP 0088756B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- steam
- power plant
- pct
- power
- 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
Links
Images
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 system for reducing the start-up and shutdown losses, for increasing the usable power and for improving the controllability of a thermal power plant using one or more pressurized heat stores, the input side with steam lines for introducing start-up and shutdown steam or excess steam accumulating during operation are connected.
- start-up and shutdown times are up to 1 hour or more depending on the state of the plant.
- many conventional power plant units have to be switched off regularly at weekends and at night, so that the amount of heat emitted unused during these start-up and shutdown periods makes up a significant proportion of the total thermal energy converted.
- the compensation of control deviations of the electrical power of a conventional power plant block from the power setpoint can only be done with the timing of the steam generation and the limited storage capacity of the steam generator, which decisively determines the control capacity of the power plant block.
- GB-A No. 709888 describes a system in which, in addition to the feed water tank, a second, closed feed water tank is provided, the initially cold condensate filling of which is heated up to operating temperature exclusively during the start-up period by introducing start-up steam while continuously circulating the condensate. After the power plant has started up, the now hot condensate filling of the tank is discharged into the feed water tank and replaced again with cold condensate.
- the discharge current is returned in the feed water tank, ie at a point with a significantly lower pressure level. This requires a very complex, three-stage relaxation in DE-B No. 1128437. This has poor thermodynamic efficiency.
- the storage medium is first pressurized and stored, when it is unloaded it is first relaxed again and then has to be pressurized again. This results - in addition to the poor thermodynamic efficiency - for the high-pressure pump, a higher required output with a larger pressure flow quantity.
- the excess heat extracted from the medium-pressure withdrawals is first transferred from the extraction steam to the condensate in the high-pressure preheaters, which then flows first into the feed water tank and from there through the high-pressure preheater, where it is heated up again against further extraction steam, into the storage tank. This means a further increase in the flow rate for the high-pressure pump and losses due to the double heat exchange.
- the object of the present invention is to provide a system which avoids these disadvantages and which makes it possible in a simple manner to reduce the start-up and shutdown losses of a thermal power plant and, at the same time, to increase the usable power during operation and to improve the controllability of the thermal power plant.
- pressure heat accumulators are connected on the water side behind a last medium-pressure low-pressure preheater via a charging line to a condensate line leading to the feed water tank and via a discharge line and a pump to the condensate line or the feed water tank.
- the pressure level of the heat accumulator can be freely selected within wide limits and only needs to be insignificant Lich above the pressure level of the feed water tank.
- the high-pressure pump and high-pressure preheater are not touched directly by the storage system. Extraction steam as well as start-up and shutdown steam are immediately, ie. H. Heat and heat transfer medium, introduced into the storage, without intermediate heat exchange.
- the storage of hot condensate is discharged forward in the direction of flow of the steam cycle and in particular without substantial relaxation and the associated thermodynamic losses.
- 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 demand, they return their charging energy to the steam cycle of the power plant.
- control deviations in the electrical power can be compensated, at least in part.
- the power reserve of a power plant block that is necessarily to be maintained can be reduced by the regulating capacity of the pressure heat accumulator and the nominal block power can be increased accordingly.
- a pressure relief vessel is advantageously connected between the pressure heat accumulator and the feed water container, in which, if the heat accumulator is operated at a higher pressure than the feed water container, the storage medium is expanded to the pressure of the feed water container and the same thermodynamic states of discharge current and feed water container content are set.
- the discharge current with the enthalpy of the storage content is introduced directly into the feed water tank or into the condensate line leading to it, then the discharge current and thus the improvement of the control capacity of the power plant are limited due to the different thermodynamic states of the discharge current and the feed water tank content.
- the steam flows successively through a high-pressure turbine 31, an intermediate superheater 34, a medium-pressure turbine 32 and a double-flow low-pressure turbine 33 passed and from there via a feed water pump 7 back into the steam generator.
- 3 designates a shunt-type condensate store.
- a pressure heat accumulator 21 is connected to the condensate system on the water side via lines 23, 26 and a pump 22 in a shunt.
- a pressure line after the discharge pump 22 opens into a condensate line 30 between the last medium-pressure low-pressure preheater 4n and upstream of the feed water tank 6.
- the pressure line can, however, also lead directly into the feed water tank 6.
- the pressure heat accumulator 21 is once via a line 27 with the medium pressure or reheater network of the power plant block and / or with other, economically suitable steam networks and steam systems with a higher steam pressure than that prevailing in the pressure heat accumulator 21, e.g. B. with a removal 28, which also supplies the feed water tank 6 with steam.
- steam from the medium-pressure reheater network is introduced via line 27, possibly with the interposition of a reducing station, into the pressure heat accumulator 21, which is pre-filled with cold condensate, and the condensate filling is heated.
- the pressure heat accumulator 21 In the power range, in low or partial load periods, the pressure heat accumulator 21 is charged with hot condensate via the low-pressure medium-pressure preheaters 4a to 4n, and the hot condensate stream from the same withdrawal 28, which also supplies the feed water tank 6 with steam, in a mixed preheating unit, not shown in the figure. and degassing stage immediately before the pressure heat accumulator 21 warmed up.
- the hot accumulator discharge current in the expansion vessel 24 can be expanded to the pressure in the feed water container 6 and introduced into the condensate line 30.
- the flash steam 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 discharge current and feed water tank content are achieved.
- the expansion vessel 24 and the line 35 can be omitted, 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 prevents evaporation in the condensate line 30 and at the feed water tank inlet.
- the lei control operation of the power plant occurring control deviations of the electrical power from the power setpoint in the power control range offered can be easily and quickly corrected.
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)
Claims (2)
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 EP0088756A1 (fr) | 1983-09-21 |
EP0088756B1 true 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) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10159553B2 (en) | 2008-01-29 | 2018-12-25 | Insightra Medical, Inc. | Fortified mesh for tissue repair |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US8616323B1 (en) | 2009-03-11 | 2013-12-31 | Echogen Power Systems | Hybrid power systems |
EP2419621A4 (fr) | 2009-04-17 | 2015-03-04 | Echogen Power Systems | Système et procédé pour gérer des problèmes thermiques dans des moteurs à turbine à gaz |
AU2010264462B2 (en) | 2009-06-22 | 2016-05-12 | Echogen Power Systems Inc. | System and method for managing thermal issues in one or more industrial processes |
WO2011017476A1 (fr) | 2009-08-04 | 2011-02-10 | Echogen Power Systems Inc. | Pompe à chaleur avec collecteur solaire intégré |
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 |
US8794002B2 (en) | 2009-09-17 | 2014-08-05 | Echogen Power Systems | Thermal energy conversion method |
US8869531B2 (en) | 2009-09-17 | 2014-10-28 | Echogen Power Systems, Llc | Heat engines with cascade cycles |
US8813497B2 (en) | 2009-09-17 | 2014-08-26 | Echogen Power Systems, Llc | Automated mass management control |
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 |
WO2013055391A1 (fr) | 2011-10-03 | 2013-04-18 | Echogen Power Systems, Llc | Cycle de réfrigération du dioxyde de carbone |
EP2589761B1 (fr) | 2011-11-03 | 2017-05-10 | General Electric Technology GmbH | Centrale thermique à vapeur avec accumulateur de chaleur et procédé de fonctionnement d'une centrale thermique à vapeur |
WO2013107557A2 (fr) | 2012-01-19 | 2013-07-25 | Siemens Aktiengesellschaft | Système de production de vapeur auxiliaire pour une centrale électrique |
KR20150143402A (ko) | 2012-08-20 | 2015-12-23 | 에코진 파워 시스템스, 엘엘씨 | 직렬 구성의 터보 펌프와 시동 펌프를 갖는 초임계 작동 유체 회로 |
US9118226B2 (en) | 2012-10-12 | 2015-08-25 | Echogen Power Systems, Llc | Heat engine system with a supercritical working fluid and processes thereof |
US9341084B2 (en) | 2012-10-12 | 2016-05-17 | Echogen Power Systems, Llc | Supercritical carbon dioxide power cycle for waste heat recovery |
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 |
CA2899163C (fr) | 2013-01-28 | 2021-08-10 | Echogen Power Systems, L.L.C. | Procede de commande d'un robinet de debit 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 |
WO2014138035A1 (fr) | 2013-03-04 | 2014-09-12 | Echogen Power Systems, L.L.C. | Systèmes de moteur thermique possédant des circuits de dioxyde de carbone supercritique à haute énergie nette |
WO2016073252A1 (fr) | 2014-11-03 | 2016-05-12 | Echogen Power Systems, L.L.C. | Gestion de poussée active d'une turbopompe à l'intérieur d'un circuit de circulation de fluide de travail supercritique dans un système de moteur thermique |
US11187112B2 (en) | 2018-06-27 | 2021-11-30 | 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 |
MA61232A1 (fr) | 2020-12-09 | 2024-05-31 | Supercritical Storage Company Inc | Système de stockage d'énergie thermique électrique à trois réservoirs |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1770256A (en) * | 1924-12-31 | 1930-07-08 | Smekal Josef | Steam-accumulator plant |
DE628717C (de) * | 1926-10-13 | 1936-04-15 | Christian Christians | Dampfanlage zum Ausgleich von Schwankungen |
GB446061A (en) * | 1935-08-22 | 1936-04-23 | Ruths Arca Accumulators Ltd | Improvements in or relating to steam plants including hot-water accumulators |
CH204975A (de) * | 1938-01-21 | 1939-05-31 | Sulzer Ag | Verfahren und Vorrichtung zum Betreiben einer Hochdruck-Dampfkraftanlage. |
NL78792C (fr) * | 1952-01-05 | |||
GB887274A (en) * | 1957-03-02 | 1962-01-17 | Siemens Schuckertwerkd Ag | A steam boiler and turbine installation |
DE1128437B (de) * | 1960-05-13 | 1962-04-26 | Siemens Ag | Dampfkraftanlage, insbesondere Blockanlage mit Zwangdurchlaufkessel |
US3564677A (en) * | 1967-11-06 | 1971-02-23 | Johnson & Johnson | Method and apparatus of treating material to change its configuration |
JPS4711600U (fr) * | 1971-03-01 | 1972-10-11 | ||
DE2609622A1 (de) * | 1976-03-09 | 1977-09-15 | Babcock Ag | Verfahren und vorrichtung zur speicherung von energie in kraftwerken |
DE2620023A1 (de) * | 1976-05-06 | 1977-11-17 | Babcock Ag | Verfahren und vorrichtung zur speicherung von energie in kraftwerken |
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 |
-
1981
- 1981-09-19 DE DE3137371A patent/DE3137371C2/de not_active Expired
- 1981-12-23 US US06/494,765 patent/US4549401A/en not_active Expired - Fee Related
- 1981-12-23 JP JP57500196A patent/JPS58501473A/ja active Pending
- 1981-12-23 WO PCT/EP1981/000204 patent/WO1983001090A1/fr not_active Application Discontinuation
- 1981-12-23 EP EP82900106A patent/EP0088756B1/fr not_active Expired
- 1981-12-23 AT AT82900106T patent/ATE18931T1/de not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10159553B2 (en) | 2008-01-29 | 2018-12-25 | Insightra Medical, Inc. | Fortified mesh for tissue repair |
Also Published As
Publication number | Publication date |
---|---|
EP0088756A1 (fr) | 1983-09-21 |
US4549401A (en) | 1985-10-29 |
ATE18931T1 (de) | 1986-04-15 |
DE3137371C2 (de) | 1984-06-20 |
DE3137371A1 (de) | 1983-04-14 |
WO1983001090A1 (fr) | 1983-03-31 |
JPS58501473A (ja) | 1983-09-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0088756B1 (fr) | 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 | |
EP2812542B1 (fr) | Centrale d'accumulation d'énergie et procédé de fonctionnement d'une telle centrale | |
US4164848A (en) | Method and apparatus for peak-load coverage and stop-gap reserve in steam power plants | |
EP0819209B1 (fr) | Procede de fonctionnement d'un generateur de vapeur a recuperation de chaleur, et generateur de vapeur a recuperation de chaleur fonctionnant selon ce procede | |
DE2632777C2 (de) | Dampfkraftanlage mit Einrichtung zur Spitzenlastdeckung | |
EP3025031B1 (fr) | Procédé de fonctionnement d'une centrale à turbine à vapeur | |
EP0778397A2 (fr) | Procédé d'opération d'une centrale combinée avec une chaudière de récuperation et un consommateur de vapeur | |
DE2824321A1 (de) | Kombiniertes gas/dampfturbinenkraftwerk mit gegendruckturbine, insbesondere fuer industriezwecke | |
DE2907068C2 (de) | Dampfkraftanlage für Grundlastbetrieb mit Einrichtung zur Deckung von Lastspitzen | |
EP1584798B1 (fr) | Méthode et appareil pour la production d'électricité et de chaleur | |
DE2620023A1 (de) | Verfahren und vorrichtung zur speicherung von energie in kraftwerken | |
EP3269948B1 (fr) | Procédé d'adaptation de la puissance d'une centrale à turbine à vapeur et centrale à turbine à vapeur | |
EP1801363A1 (fr) | Centrale électrique | |
DE4447044C1 (de) | Verfahren zur Verminderung der Anfahrverluste eines Kraftwerksblockes | |
EP3080407B1 (fr) | Accumulation d'énergie au moyen d'un accumulateur de chaleur et d'un thermocompresseur de vapeur | |
DE10155508C2 (de) | Verfahren und Vorrichtung zur Erzeugung von elektrischer Energie | |
EP0067841B1 (fr) | Procede d'alimentation d'un reseau de distribution de chaleur a longue distance avec la chaleur d'une centrale thermique | |
EP3511534A1 (fr) | Centrale thermique et procédé de fonctionnement d'une centrale thermique | |
DE1288614B (de) | Verfahren und Vorrichtung zum Abbau von Dampfspitzen aus Prozessabfallwaermeverwertern mit variabler Dampferzeugung | |
EP3467378B1 (fr) | Installation à flammes perdues pour la production d'eau chaude et procédé de fonctionnement d'une installation à flammes perdues pour la production d'eau chaude | |
DE488158C (de) | Dampfkraftanlage mit Heizdampfverwertung und Einrichtung fuer den Ausgleich der Schwankungen von Kraftleistung und Heizdampfverbrauch | |
AT377577B (de) | Einrichtung zur spitzenlast- oder ueberlasterzeugung aus einem dampfkraftwerk | |
AT234730B (de) | Verfahren und Vorrichtung zum Abbau von Dampfspitzen aus Prozeßabfallwärmeverwertern mit variabler Dampferzeugung | |
DE1196668B (de) | Dampfkraftanlage mit Zwangdurchlaufkessel und Zwischenueberhitzer fuer einen Betrieb mit steilen Laststossspielen | |
CH640033A5 (en) | Peak load cover by heat energy storage |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19830510 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH FR GB LI NL SE |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH FR GB LI NL SE |
|
REF | Corresponds to: |
Ref document number: 18931 Country of ref document: AT Date of ref document: 19860415 Kind code of ref document: T |
|
ET | Fr: translation filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19861022 Year of fee payment: 6 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19861231 Year of fee payment: 6 |
|
PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
26 | Opposition filed |
Opponent name: BBC AKTIENGESELLSCHAFT BROWN,BOVERI & CIE. Effective date: 19861227 |
|
NLR1 | Nl: opposition has been filed with the epo |
Opponent name: BBC AKTIENGESELLSCHAFT BROWN,BOVERI & CIE |
|
BERE | Be: lapsed |
Owner name: SAARBERGWERKE A.G. Effective date: 19861231 |
|
RDAG | Patent revoked |
Free format text: ORIGINAL CODE: 0009271 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: PATENT REVOKED |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
27W | Patent revoked |
Effective date: 19871004 |
|
NLR2 | Nl: decision of opposition | ||
GBPR | Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state | ||
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 7102 |
|
EUG | Se: european patent has lapsed |
Ref document number: 82900106.4 Effective date: 19880913 |