EP2554902A1 - Refroidisseur de vapeur en dérivation - Google Patents

Refroidisseur de vapeur en dérivation Download PDF

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Publication number
EP2554902A1
EP2554902A1 EP11176658A EP11176658A EP2554902A1 EP 2554902 A1 EP2554902 A1 EP 2554902A1 EP 11176658 A EP11176658 A EP 11176658A EP 11176658 A EP11176658 A EP 11176658A EP 2554902 A1 EP2554902 A1 EP 2554902A1
Authority
EP
European Patent Office
Prior art keywords
mixing
steam
cooling medium
mixing unit
section
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Withdrawn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
EP11176658A
Other languages
German (de)
English (en)
Inventor
Peter Berenbrink
Frank Deidewig
Holger Gedanitz
Ralf Hoffacker
Dirk Huckriede
Mario Koebe
Bernd Prade
Horst Uwe Rauh
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
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Priority to EP11176658A priority Critical patent/EP2554902A1/fr
Priority to PCT/EP2012/064765 priority patent/WO2013020829A1/fr
Priority to CN201290000730.6U priority patent/CN204127940U/zh
Publication of EP2554902A1 publication Critical patent/EP2554902A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22G—SUPERHEATING OF STEAM
    • F22G5/00—Controlling superheat temperature
    • F22G5/12—Controlling superheat temperature by attemperating the superheated steam, e.g. by injected water sprays
    • F22G5/123—Water injection apparatus
    • 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
    • F01K13/00—General layout or general methods of operation of complete plants
    • F01K13/02—Controlling, e.g. stopping or starting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C3/00—Other direct-contact heat-exchange apparatus
    • F28C3/06—Other direct-contact heat-exchange apparatus the heat-exchange media being a liquid and a gas or vapour
    • F28C3/08—Other direct-contact heat-exchange apparatus the heat-exchange media being a liquid and a gas or vapour with change of state, e.g. absorption, evaporation, condensation

Definitions

  • the invention relates to a mixing unit for mixing a flow medium with a cooling medium, comprising a pipe channel section, to which a mixing section is fluidly coupled.
  • the invention relates to a method for mixing a flow medium with a cooling medium.
  • thermodynamic conditions are comparatively constant in time.
  • diverter stations used today consist of a diverter valve and the diversion steam inlet.
  • the bypass steam introduction includes an orifice, a water injection device, and a mixing tube.
  • the resulting steam is cooled by the bypass station by injecting water and introduced directly into the condenser.
  • the invention has set itself the task of reducing the noise emissions and to achieve a better homogeneous temperature distribution.
  • a mixing unit for mixing a flow medium with a cooling medium comprising a tube channel portion to which a mixing section is fluidly coupled, wherein the mixing section comprises a plurality of aperture openings through which the flow medium is flowable, wherein in the aperture openings injection channels are formed by the cooling medium flows in such a way that mixing of the flow medium with the cooling medium takes place.
  • the aperture is formed as a Laval nozzle.
  • the cooling medium is water and the flow medium is steam.
  • the shape of the Laval nozzle creates high flow velocities of the steam.
  • the water to be injected is injected at the sides of the Laval nozzle through the injection channels.
  • the injection channels are arranged obliquely to the Laval nozzle wall.
  • the object is also achieved by a method for mixing a flow medium with a cooling medium, wherein in a mixing unit several Laval nozzles are distributed in a pipe section on the cross section and injection channels are arranged in the Laval nozzles, through which the cooling medium flows and with the flow medium in a mixing tube is mixed downstream.
  • a method for mixing a flow medium with a cooling medium wherein in a mixing unit several Laval nozzles are distributed in a pipe section on the cross section and injection channels are arranged in the Laval nozzles, through which the cooling medium flows and with the flow medium in a mixing tube is mixed downstream.
  • the flow rate of the coolant flowing through the injection channels cooling medium individually regulated. This means that it is possible to respond very quickly and very well to changed load conditions of the entire steam power plant.
  • FIG. 1 shows a mixing unit 1 according to the prior art.
  • the mixing unit 1 is designed to mix a flow medium with a cooling medium.
  • the flow medium is water vapor 2.
  • the flow direction of the water vapor is represented by the arrows 3.
  • the steam first flows in a tube channel section 4, which may be formed as a tube, to a mixing section 5.
  • steam is finally mixed with the cooling medium, which here is water 6.
  • This is done by a Laval nozzle 7.
  • at least one injection channel 8 is arranged, through which the water 6 is mixed in the mixing section 5 with the steam.
  • the mixing section 5 is adjoined by a mixing tube 9 in which the vapor 3 now has a lower temperature.
  • the mixing tube 9 is fluidically connected to the condenser (not shown).
  • a perforated basket 10 is arranged, the turbulence increasing and thus improving the cross-mixing.
  • the FIG. 2 shows a mixing unit 1 according to the invention and is according to the mixing unit 1 according to FIG. 1 different in that in the mixing section 5 not a Laval nozzle 7, but a plurality of Laval nozzles 7a, 7b, 7c ... are arranged.
  • the injection channels 8 are inclined arranged to the flow direction 3 of the steam 3.
  • the Laval nozzles 7a, 7b, 7c ... can be made identical to each other in alternative embodiments.
  • the flow through the injection channels 8 can be adjusted by control technology so that the flow rate is different. This can lead to a local change in the homogeneity of the water vapor with the water to be injected. This allows better mixing.
  • the mixing unit 1 according to FIG. 2 is also fluidly coupled with a mixing tube 3 to a capacitor, not shown.
  • a perforated basket is also formed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Nozzles (AREA)
EP11176658A 2011-08-05 2011-08-05 Refroidisseur de vapeur en dérivation Withdrawn EP2554902A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP11176658A EP2554902A1 (fr) 2011-08-05 2011-08-05 Refroidisseur de vapeur en dérivation
PCT/EP2012/064765 WO2013020829A1 (fr) 2011-08-05 2012-07-27 Station de dérivation de vapeur
CN201290000730.6U CN204127940U (zh) 2011-08-05 2012-07-27 混合单元

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11176658A EP2554902A1 (fr) 2011-08-05 2011-08-05 Refroidisseur de vapeur en dérivation

Publications (1)

Publication Number Publication Date
EP2554902A1 true EP2554902A1 (fr) 2013-02-06

Family

ID=46603950

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11176658A Withdrawn EP2554902A1 (fr) 2011-08-05 2011-08-05 Refroidisseur de vapeur en dérivation

Country Status (3)

Country Link
EP (1) EP2554902A1 (fr)
CN (1) CN204127940U (fr)
WO (1) WO2013020829A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103727808A (zh) * 2013-12-08 2014-04-16 无锡伊诺永利文化创意有限公司 内凹盘管式喷射流体交换器
WO2020193702A1 (fr) * 2019-03-28 2020-10-01 Welland & Tuxhorn AG Ensemble soupape

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110319701A (zh) * 2019-08-15 2019-10-11 宜兴曜源科技发展有限公司 拉瓦喷射浸没式顶吹喷枪

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE554162C (de) * 1932-07-02 Andreas Lenz Heissdampf-Temperaturregler
US2421761A (en) * 1941-10-10 1947-06-10 Babcock & Wilcox Co Attemperator
DE1177169B (de) * 1961-08-03 1964-09-03 Schneider Bochumer Maschf A Vorrichtung zur Dampfkuehlung durch Ein-spritzen von Wasser
EP0971168A2 (fr) * 1998-07-07 2000-01-12 Holter Regelarmaturen GmbH & Co. KG Désurchauffeur à injection pour la régulation de la température de la vapeur surchauffée
DE19936125A1 (de) * 1999-07-31 2001-02-01 Artec Armaturen Anlagentech Treibdampfdüse

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE554162C (de) * 1932-07-02 Andreas Lenz Heissdampf-Temperaturregler
US2421761A (en) * 1941-10-10 1947-06-10 Babcock & Wilcox Co Attemperator
DE1177169B (de) * 1961-08-03 1964-09-03 Schneider Bochumer Maschf A Vorrichtung zur Dampfkuehlung durch Ein-spritzen von Wasser
EP0971168A2 (fr) * 1998-07-07 2000-01-12 Holter Regelarmaturen GmbH & Co. KG Désurchauffeur à injection pour la régulation de la température de la vapeur surchauffée
DE19936125A1 (de) * 1999-07-31 2001-02-01 Artec Armaturen Anlagentech Treibdampfdüse

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103727808A (zh) * 2013-12-08 2014-04-16 无锡伊诺永利文化创意有限公司 内凹盘管式喷射流体交换器
WO2020193702A1 (fr) * 2019-03-28 2020-10-01 Welland & Tuxhorn AG Ensemble soupape

Also Published As

Publication number Publication date
WO2013020829A1 (fr) 2013-02-14
CN204127940U (zh) 2015-01-28

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