EP1784558A1 - Turbine à vapeur - Google Patents

Turbine à vapeur

Info

Publication number
EP1784558A1
EP1784558A1 EP05775974A EP05775974A EP1784558A1 EP 1784558 A1 EP1784558 A1 EP 1784558A1 EP 05775974 A EP05775974 A EP 05775974A EP 05775974 A EP05775974 A EP 05775974A EP 1784558 A1 EP1784558 A1 EP 1784558A1
Authority
EP
European Patent Office
Prior art keywords
steam turbine
steam
control wheel
wheel
control
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.)
Withdrawn
Application number
EP05775974A
Other languages
German (de)
English (en)
Inventor
Olaf Arndt
Udo Tielcke
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.)
Siemens AG
Original Assignee
Siemens 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=34926390&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1784558(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP05775974A priority Critical patent/EP1784558A1/fr
Publication of EP1784558A1 publication Critical patent/EP1784558A1/fr
Withdrawn legal-status Critical Current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
    • F01K7/00—Steam 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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/16—Steam 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
    • F01K7/18—Steam 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 turbine being of multiple-inlet-pressure type
    • 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
    • F01K7/00—Steam 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
    • F01K7/16—Steam 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
    • F01K7/18—Steam 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 turbine being of multiple-inlet-pressure type
    • F01K7/20—Control means specially adapted therefor

Definitions

  • the invention relates to a steam turbine according to the preamble of claim 1.
  • the invention has for its object to provide a steam turbine, which is operable with good efficiencies both in normal operation and in the partial load range with benefits that are well below the rated power.
  • the steam turbine according to the invention should also have a good efficiency in operation with overload.
  • the optimization of the process is influenced by a trouble-free mixing of the reintegrated steam after the MD control wheel. It can be seen that at high live steam conditions (HD steam), the quadruple mass flow can be processed in overload operation without significant losses in efficiency in normal and part-load operations. This will be achieved especially if a suitable division of the two steam flows is made and the control wheels and step groups are designed so that in the chamber of the MD control wheel, the two steam streams have approximately the same vapor data. Different steam temperatures from the two steam streams are acceptable.
  • HD steam live steam
  • the inventive arrangement of a second control wheel with the associated controllable nozzles in a chamber between the first stage part of the steam turbine part and the second stage part of the steam turbine can be used successfully both in drum turbines and in chamber turbines.
  • the invention can be used equally successfully in turbines with constant pressure blading and in turbines with positive pressure blading in the multiple stages of the steam turbine.
  • the HP ratchet wheel and the MD ratchet wheel can be both single-stringed and two-stringed (Curtis wheel).
  • the design of the turbine with HP control wheel and subsequent step part is often optimal. However, this construction is not essential to the invention.
  • the HP control wheel can also be replaced as a step section with an optional inner housing and a throttle control in bypass / internal bypass operation or as a combination of both, HP control wheel and bypass operation in the inner housing.
  • the basic principle therefore does not change, because the MD impeller with nozzle can also be put into operation as required via the pressure gradient between the HD entry state and the selected, optimized MD state if required.
  • the principle of the MD pulse wheel with nozzles can also be carried out as a retrofit or conversion in an existing turbine.
  • the required or desired overload power is introduced by the required high-pressure steam via the downstream additionally integrated impulse stage.
  • the injection of this additional HD steam is done via conventional nozzle controls, so that the impulse wheel adds additional power through the nozzles in sliding pressure mode like a free control wheel.
  • the additional power results from the enthalpy difference between the HD vapor state and the local steam state after the MD control wheel and the amount of steam to be optimized.
  • FIG. 1 shows a longitudinal section through an embodiment of a steam turbine according to the invention
  • Figure 2 shows an embodiment of a control wheel with a
  • FIG. 1 shows a steam turbine with a housing 3 and a rotor 5 in longitudinal section.
  • the steam turbine 1 has a first step part 7 and a second step part 9.
  • Each of the stages 7 and 9 consists of a group of blades 11 which are fixed to the rotor 5 and a group of vanes 13, which are usually attached via guide vanes to the housing 3 of the steam turbine 1. For reasons of clarity, not all blades and not all the vanes have been provided with the reference number in FIG. In the flow direction before the first stage part 7, a first control wheel 15 is attached to the rotor 5. The not shown in Figure 1 individually
  • Blades of the control wheel 15 are designed as equal pressure blades.
  • a nozzle ring 17 In the immediate vicinity of the first control wheel 15, a nozzle ring 17 is provided, which has a plurality of nozzles 19 distributed over the circumference.
  • the nozzle ring 17 is acted upon by a live steam line 21 with the partial lines 21a and 21b with steam.
  • a first control valve 23 is provided in each case. Via the controllable nozzles 19, the steam supplied to the nozzle ring 17 is passed to the first control wheel 15 and then passes into a first wheel space 25, which is bounded by the rotor 5 and the housing 3.
  • the live steam (not shown in FIG. 1) reaches the first stage part 7 of the steam turbine 1, where it is depressurized.
  • a second MD control wheel 27 is provided on the rotor 5.
  • the MD control wheel 27 is also formed in the embodiment shown here as a pulse wheel.
  • the second MD control wheel 27 is of one or more nozzles 29, of which only one is shown in Figure 1, acted upon by additional steam and thereby acts as a Regelradform in Gleit horrin.
  • This additional steam which is indicated in Figure 1 by an arrow 31, mixes before entering the second stage part 9 with the partially relaxed live steam, which has leaked from the first stage part 7.
  • This partially relaxed live steam has been provided with the reference numeral 33 in FIG.
  • the existing between the first stage part 7 and second stage part 9 space in which the second MD control wheel 27 is located, is referred to below as the second wheel chamber 35.
  • the nozzle 29 is also controllable and can be optimized, for example via a second control valve 37 or a valve group, not shown. About this second control valve 37, the supply of additional steam can be controlled in the steam turbine 1 through the nozzle 29.
  • the second control valve 37 or the valve group In normal operation, that is, when the steam turbine is operated at its rated power or in the partial load range, the second control valve 37 or the valve group is closed and the steam turbine 1 operates like a conventional steam turbine.
  • the power control of the steam turbine 1 takes place exclusively via the first control wheel 15 or the control of the nozzles 19, which control the application of the first control wheel 15.
  • the power control of the steam turbine 1 in nominal or normal operation and in partial load operation is well known from the prior art and will therefore not be explained in detail in connection with the invention.
  • An advantage of this power control is the consistently good efficiency of the steam turbine 1 at rated load as well as in Part load operation without significant additional construction costs such.
  • As inner casing turbines with Mitteneinströmung or the like.
  • the second control valve 37 or the valve group, not shown, is opened according to the invention, so that additional steam can flow via the nozzle 29 to the second control wheel 27.
  • the nozzle 29 is designed and optimized so that the vapor state of the additional steam 31 as possible corresponds to the vapor state of the partially relaxed live steam 33, so that in the second wheel chamber 35, a good and easy mixing of these two partial steam flows can be done.
  • the partially relaxed live steam 33 may flow around the second MD control wheel 27 more or less unhindered because of a larger distance to be provided between the second MD control wheel 27 and the housing 3 of the steam turbine 1.
  • the Ventilströmskye in Umströmungs admire be reduced by a conventional ventilation protection device. If the ventilation protection device is insufficient, admixing via the second control valve 37 is recommended.
  • Both partial steam flows 31 and 33 now flow through the second stage part 9 and deliver there work or power to the rotor 5 from.
  • a suitable design of both the first stage part 7 and the second stage part 9 and the first control wheel 15 with its nozzles 19 and the second control wheel 27 with its nozzles 29 can be implemented in overload operation, the fourfold steam flow compared with the design point of the steam turbine 1. This leads to a correspondingly much improved performance increase of the steam turbine, without significant loss of efficiency of the steam turbine.
  • the steam turbine 1 from the partial load operation on the Operate at rated load to overload operation with a good approximately constant efficiency.
  • the second control wheel 27 and the nozzles 29 are shown schematically in a front view.
  • the second control wheel 27 has blades 39, which are shown only schematically in Figure 2.
  • Blade 39 of the second MD control wheel 27 can be acted upon with additional steam.
  • a valve 43 is provided in each case between an inflow box 41 and the nozzles 29. Depending on how many of the valves 43 are opened, flows a more or less large amount of

Landscapes

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

Abstract

L'invention concerne une turbine à vapeur (1) à étages multiples, qui présente, derrière sa première partie d'étage (7), une seconde roue de réglage MP (27) pouvant être sollicitée en pression supplémentaire (31), en régime de surcharge. La turbine à vapeur (1) selon l'invention peut être actionnée aussi bien dans la plage de charge partielle, qu'au point de fonctionnement nominal et en régime de surcharge marquée, avec un rendement élevé constant.
EP05775974A 2004-09-01 2005-08-12 Turbine à vapeur Withdrawn EP1784558A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05775974A EP1784558A1 (fr) 2004-09-01 2005-08-12 Turbine à vapeur

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP04020807.6A EP1632650B1 (fr) 2004-09-01 2004-09-01 Turbine à vapeur
PCT/EP2005/053972 WO2006024597A1 (fr) 2004-09-01 2005-08-12 Turbine a vapeur
EP05775974A EP1784558A1 (fr) 2004-09-01 2005-08-12 Turbine à vapeur

Publications (1)

Publication Number Publication Date
EP1784558A1 true EP1784558A1 (fr) 2007-05-16

Family

ID=34926390

Family Applications (2)

Application Number Title Priority Date Filing Date
EP04020807.6A Expired - Lifetime EP1632650B1 (fr) 2004-09-01 2004-09-01 Turbine à vapeur
EP05775974A Withdrawn EP1784558A1 (fr) 2004-09-01 2005-08-12 Turbine à vapeur

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP04020807.6A Expired - Lifetime EP1632650B1 (fr) 2004-09-01 2004-09-01 Turbine à vapeur

Country Status (6)

Country Link
EP (2) EP1632650B1 (fr)
CN (1) CN100462525C (fr)
BR (1) BRPI0514816B8 (fr)
ES (1) ES2411657T3 (fr)
PL (1) PL1632650T3 (fr)
WO (1) WO2006024597A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2078821B1 (fr) * 2008-01-10 2011-03-02 Siemens Aktiengesellschaft Turbine à vapeur
DE102008033402A1 (de) 2008-07-16 2010-01-21 Siemens Aktiengesellschaft Dampfturbinenanlage sowie Verfahren zum Betreiben einer Dampfturbine
DE102008062078B4 (de) 2008-12-16 2019-10-17 Man Energy Solutions Se Eintrittsstufe für eine Dampfturbine
JP5479191B2 (ja) * 2010-04-07 2014-04-23 株式会社東芝 蒸気タービンプラント
EP2667027A1 (fr) * 2012-05-24 2013-11-27 Alstom Technology Ltd Installation solaire à cycle de Rankine à vapeur et procédé de fonctionnement de ladite installation
US20180195392A1 (en) * 2017-01-11 2018-07-12 General Electric Company Steam turbine system with impulse stage having plurality of nozzle groups
EP3409895B1 (fr) * 2017-05-29 2019-10-30 Siemens Aktiengesellschaft Composant de boîtier pour turbine à vapeur

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB228920A (fr) * 1924-02-05 1925-09-24 International General Electric Company Incorporated
US4658590A (en) * 1984-12-28 1987-04-21 Hitachi, Ltd. Steam turbine governor system and method of controlling the same
FR2635561B1 (fr) * 1988-08-16 1990-10-12 Alsthom Gec Installation de turbine a vapeur avec soutirage regle
DE4100777A1 (de) * 1990-12-18 1992-06-25 Asea Brown Boveri Einlassgehaeuse fuer dampfturbine
DE59808650D1 (de) * 1998-12-16 2003-07-10 Alstom Switzerland Ltd Modulare Dampfturbine mit Standardbeschaufelung
DE10042317A1 (de) * 2000-08-29 2002-03-14 Alstom Power Nv Dampfturbine und Verfahren zur Einleitung von Beipassdampf

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006024597A1 *

Also Published As

Publication number Publication date
BRPI0514816B1 (pt) 2019-07-02
EP1632650B1 (fr) 2013-05-15
PL1632650T3 (pl) 2013-10-31
BRPI0514816A (pt) 2008-06-24
CN101010490A (zh) 2007-08-01
EP1632650A1 (fr) 2006-03-08
WO2006024597A1 (fr) 2006-03-09
BRPI0514816B8 (pt) 2023-04-25
CN100462525C (zh) 2009-02-18
ES2411657T3 (es) 2013-07-08

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