US20160169053A1 - Turbine condenser for a steam turbine - Google Patents

Turbine condenser for a steam turbine Download PDF

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Publication number
US20160169053A1
US20160169053A1 US14/905,592 US201414905592A US2016169053A1 US 20160169053 A1 US20160169053 A1 US 20160169053A1 US 201414905592 A US201414905592 A US 201414905592A US 2016169053 A1 US2016169053 A1 US 2016169053A1
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US
United States
Prior art keywords
steam
turbine
condenser
bypass
edge
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.)
Abandoned
Application number
US14/905,592
Other languages
English (en)
Inventor
Frank Deister
Ingo Förster
Simon Hecker
Christian Musch
Heinrich Stüer
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
Application filed by Siemens AG filed Critical Siemens AG
Assigned to SIEMENS AKTIENGESELLSCHAFT reassignment SIEMENS AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: STÜER, Heinrich, Förster, Ingo, DEISTER, FRANK, HECKER, SIMON, Musch, Christian
Publication of US20160169053A1 publication Critical patent/US20160169053A1/en
Abandoned legal-status Critical Current

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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
    • F01K9/00—Plants characterised by condensers arranged or modified to co-operate with the engines
    • F01K9/04—Plants characterised by condensers arranged or modified to co-operate with the engines with dump valves to by-pass stages
    • 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
    • F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
    • F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being 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
    • F01K9/00—Plants characterised by condensers arranged or modified to co-operate with the engines
    • F01K9/003—Plants characterised by condensers arranged or modified to co-operate with the engines condenser cooling circuits

Definitions

  • the invention relates to a turbine condenser for a steam turbine.
  • Turbine condensers serve for the liquefaction of the exhaust steam of steam turbines.
  • Turbine condensers serve for the liquefaction of the exhaust steam of steam turbines.
  • In the case of installations with combined gas and steam turbines to be able to cover peak loads in energy demand, such installations are nowadays operated for most of the time only at gas turbine minimum load. If required, the gas turbine can then be accelerated very rapidly.
  • the waste heat generated by the gas turbine at minimum load must however continue to be dissipated, which is realized by way of the heat recovery steam generator connected downstream of the gas turbine. Since the steam generated in the heat recovery steam generator however cannot be converted into electricity by way of the downstream steam turbine and the generator, said excess produced steam is conducted, bypassing the steam turbine via bypass-steam introduction lines, directly into the turbine condenser.
  • bypass-steam introduction lines are in this case normally equipped with a bypass valve for regulating the bypass-steam flow rate, a perforated cage as a throttle device for expansion of the bypass steam, and a water injection means for cooling of the bypass steam.
  • the heat gradient that must be throttled in a bypass-steam introduction line of said type is however generally very great.
  • the steam pressure upstream of the bypass valve is normally up to 45 bar, whereas the counterpressure in the turbine condenser can be stated as being approximately 0.1 bar. If said bypass-steam flow now passes, at a high pressure level, from the bypass-steam device into the turbine condenser at a considerably lower steam pressure level, this gives rise to high speed gradients in the edge regions of the inflowing bypass steam.
  • the abrupt expansion then has the result that, depending on the pressure gradient, a hypersonic flow field is locally generated. Furthermore, there is the risk of impinged-on components, such as for example the adjacent turbine blades, the condenser tubes or the condenser walls, also being caused to vibrate. Both have the effect that, during the operation of the installation, sound emissions are increased, and thus prescribed maximum values are possibly exceeded.
  • Elevations and/or indentations formed at regular or irregular intervals over the edge situated at the outflowing end of the bypass-steam introduction device have the effect that the bypass steam is locally changed already at the outlet, and is thus better mixed over its cross section. This results in a lessening of the speed gradients, and thus in less intense turbulence. Since said turbulence makes a substantial contribution to the sound emissions, it is thus possible, as a result of the improved mixing and the associated lessening of the speed gradients in the edge regions of the inflowing bypass steam, for the sound emissions to be reduced in an effective manner.
  • the edge region of the nozzle is advantageously in the form of a chevron nozzle with a serrated or toothed outlet edge. This yields particularly effective mixing over the entire cross section of the inflowing bypass steam; the resulting lessening of the uniform speed gradients thus leads to a particularly effective reduction of the sound emissions.
  • FIGURE schematically shows a region of the turbine condenser in accordance with aspects of the invention.
  • FIGURE schematically shows the region of the turbine condenser in which the bypass steam D is introduced from the bypass-steam introduction device 1 into the turbine condenser 2 .
  • the bypass steam D is introduced into the turbine condenser.
  • the bypass steam D then flows at high speed through holes (indicated by dashes in the FIGURE) in the turbine condenser 2 . This gives rise to particularly high speed gradients specifically in the edge regions of the inflowing bypass steam D.
  • a ring-shaped nozzle 4 whose edge which points into the turbine condenser 2 is of serrated form, similarly to a crown.
  • Such embodiments of non-uniform edges are known, for example from the field of aircraft engine construction, under the name “chevron nozzle”.
  • the edge which is made non-uniform by way of serrations Z the high speed gradients that prevail in particular in the edge regions of the introduced bypass steam are locally broken up, and thus locally changed, over the circumference of the inflowing bypass steam.
  • an edge is formed which may have elevations and/or indentations which are arranged so as to be distributed uniformly or else non-uniformly over the circumference of the edge.
  • the serrations or teeth may in this case have any form, such as for example a triangular or trapezoidal form, and may also, if required, be curved in the direction of the axis A of the nozzle.
  • the invention has, in the above exemplary embodiment, been described only in conjunction with a so-called “down-exhaust” turbine condenser with condenser tubes and condenser dome situated thereabove as transition chamber for receiving the exhaust steam from the adjacent steam turbine, it may in principle be used with any type of turbine condenser. Accordingly, the design according to the invention of the nozzle for the introduction of steam may also be used as a condenser connection in the case of axial turbine condensers, laterally arranged “single-side-exhaust” condensers or else bilaterally arranged “double-side-exhaust” condensers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Control Of Turbines (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
US14/905,592 2013-07-26 2014-07-17 Turbine condenser for a steam turbine Abandoned US20160169053A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP13178234.4 2013-07-26
EP20130178234 EP2829693A1 (fr) 2013-07-26 2013-07-26 Condensateur à turbine pour une turbine à vapeur
PCT/EP2014/065349 WO2015011006A2 (fr) 2013-07-26 2014-07-17 Condenseur de turbine pour une turbine à vapeur

Publications (1)

Publication Number Publication Date
US20160169053A1 true US20160169053A1 (en) 2016-06-16

Family

ID=48874209

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/905,592 Abandoned US20160169053A1 (en) 2013-07-26 2014-07-17 Turbine condenser for a steam turbine

Country Status (7)

Country Link
US (1) US20160169053A1 (fr)
EP (2) EP2829693A1 (fr)
JP (1) JP2016525668A (fr)
KR (1) KR20160030319A (fr)
CN (1) CN105408590A (fr)
RU (1) RU2016106663A (fr)
WO (1) WO2015011006A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180216891A1 (en) * 2017-01-31 2018-08-02 Control Components, Inc. Compact multi-stage condenser dump device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3251651A3 (fr) * 2016-05-31 2018-05-23 JK-Holding GmbH Système constitué d'une buse de fluide et d'un fluide entourant entièrement la buse de fluide et utilisation d'une buse de fluide dans un fluide
EP3591179A1 (fr) * 2018-07-03 2020-01-08 Siemens Aktiengesellschaft Conduit de dérivation de vapeur

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2353195A (en) * 1940-08-03 1944-07-11 Sims Alfred William Mixing fluids of different temperatures and densities
US3799256A (en) * 1971-11-18 1974-03-26 P Gaines Apparatus for transferring heat
JPS5595085A (en) * 1979-01-10 1980-07-18 Tlv Co Ltd Condenser
WO1997032113A1 (fr) * 1994-08-29 1997-09-04 Ranotor Utvecklings Ab Installation de type moteur a vapeur comprenant un systeme de condenseur
US6481208B1 (en) * 2001-10-01 2002-11-19 Holtec International External steam dump
US7055324B2 (en) * 2003-03-12 2006-06-06 Fisher Controls International Llc Noise abatement device and method for air-cooled condensing systems
US7686071B2 (en) * 2005-07-30 2010-03-30 Articchoke Enterprises Llc Blade-thru condenser having reeds and heat dissipation system thereof
CN101033917A (zh) * 2006-11-29 2007-09-12 辽宁光宇热能技术发展有限公司 一种管壳式汽水换热器
CN202329265U (zh) * 2011-10-16 2012-07-11 黄远华 蒸汽回收消声器

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180216891A1 (en) * 2017-01-31 2018-08-02 Control Components, Inc. Compact multi-stage condenser dump device
US10731513B2 (en) * 2017-01-31 2020-08-04 Control Components, Inc. Compact multi-stage condenser dump device

Also Published As

Publication number Publication date
CN105408590A (zh) 2016-03-16
EP2994621A2 (fr) 2016-03-16
WO2015011006A3 (fr) 2015-03-26
RU2016106663A (ru) 2017-08-31
EP2829693A1 (fr) 2015-01-28
WO2015011006A2 (fr) 2015-01-29
KR20160030319A (ko) 2016-03-16
JP2016525668A (ja) 2016-08-25

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AS Assignment

Owner name: SIEMENS AKTIENGESELLSCHAFT, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:DEISTER, FRANK;FOERSTER, INGO;HECKER, SIMON;AND OTHERS;SIGNING DATES FROM 20151208 TO 20151222;REEL/FRAME:037502/0124

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION