EP2987971A1 - Condensateur pour une centrale à vapeur - Google Patents

Condensateur pour une centrale à vapeur Download PDF

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Publication number
EP2987971A1
EP2987971A1 EP14181545.6A EP14181545A EP2987971A1 EP 2987971 A1 EP2987971 A1 EP 2987971A1 EP 14181545 A EP14181545 A EP 14181545A EP 2987971 A1 EP2987971 A1 EP 2987971A1
Authority
EP
European Patent Office
Prior art keywords
condensate
floats
condenser
steam
capacitor
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Withdrawn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
EP14181545.6A
Other languages
German (de)
English (en)
Inventor
Kai Brune
Stefan Brussk
Nigel-Philip Cox
Daniel Dreier
Tobias Gabl
Andrei Ghicov
Marie Hu
Mario Koebe
Marc Lange
Teresa Pott
Stefan Riemann
Andreas Ulma
David Veltmann
Gerta Zimmer
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
Priority to EP14181545.6A priority Critical patent/EP2987971A1/fr
Priority to PCT/EP2015/069010 priority patent/WO2016026883A1/fr
Priority to US15/503,702 priority patent/US20170276432A1/en
Priority to DE112015003814.0T priority patent/DE112015003814A5/de
Publication of EP2987971A1 publication Critical patent/EP2987971A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B9/00—Auxiliary systems, arrangements, or devices
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B9/00—Auxiliary systems, arrangements, or devices
    • F28B9/08—Auxiliary systems, arrangements, or devices for collecting and removing condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/002—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using inserts or attachments
    • 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

Definitions

  • the invention relates to a condenser for a steam power plant, with a region in which a condensate collects and forms a condensate surface.
  • Modern power plants usually include a gas and steam turbine plant and electrical generators that are designed to generate electrical energy.
  • the torque-transmitting drive for the electric generators takes place via the shafts of the gas turbine and / or steam turbine.
  • a steam generated in a steam generator flows to a high pressure turbine section and thence to a reheater, where the steam is raised to a temperature.
  • the steam flows to a medium-pressure turbine section and from there via an overflow line to a low-pressure turbine section.
  • the steam flows into a condenser where it condenses to water.
  • the water collects to a condensate.
  • the condensate has a condensate surface, which is connected fluidically with the flow channel of the steam turbine substantially.
  • valve housing and capacitors may be present as soon as the relative humidity of the ambient air inside the respective components exceeds a limit or cools the surface temperature of the metal parts inside the turbine and valve housing and capacitors such, that the metal parts can fall below the dew point temperature.
  • dry air units from the first day of shutdown.
  • dry air devices By operating with dry air devices, continuously dried air from the environment is introduced into the turbine housing, thus preventing the entry of moist ambient air from the machine house.
  • the introduced dry air absorbs moisture from the inside of the turbine and valve housings and the capacitors and exits at defined openings.
  • the invention has set itself the task of specifying another way to effectively prevent corrosion in the steam turbine after a shutdown.
  • a condenser for a steam power plant with an area in which a condensate collects and forms a condensate surface, wherein floating bodies are arranged on the condensate surface.
  • the evaporation of the condensate is directly dependent on the size of the contact surface between water and air.
  • the size of the contact surface is effectively reduced by placing floating bodies on the condensate.
  • the contact area is reduced by the floats. This also reduces the evaporation in the Hotwell. It is achieved a lower moisture content and in particular reduces the risk of local moisture.
  • the invention thus effectively supports the drying of the turbine.
  • the floats are arranged according to the invention floating in a sufficiently large number on the condensate surface.
  • the floats are arranged in a first advantageous development so that the condensate surface is wetted.
  • the floating bodies are spherical and / or ball-shaped. This forms can occur such.
  • the floats on different sizes can be further effectively reduced, since the points between the large floats can be closed by smaller floats.
  • the floating bodies are designed and arranged such that the floating bodies have different shapes.
  • a spherical and ball-like floating body can be arranged side by side on the condensate surface. This also effectively reduces the condensate surface.
  • the floating body are designed such that a rotation of the float is prevented. Due to the difficult rotation of the floating body, it is possible that always the same surface on the condensate surface and the non-wetted surface opposite to the condensate surface shows. This keeps the non-wetted surface dry. An increase in humidity is thereby prevented.
  • the floats have different densities. This results in that the floats can be arranged in different layers on the condensate surface.
  • the floats are provided in an advantageous development with a material surface that is as hydrophobic as possible. A hydrophobic surface results in a non-wettable surface. Thus, the moisture is held in the condensate.
  • Another advantage of the invention is that existing capacitor systems can be easily retrofitted according to the invention very easily and inexpensively. As an adaptation to the concrete capacitor geometry is done exclusively on the amount of floating body, the invention can be used inexpensively. There are no individual installations required.
  • the floats can by measures such. As a connection with each other or covering against unwanted suction can be secured by pumping.
  • the invention thus provides the advantage that a reduced evaporation is achieved in the hot well. This means that a smaller amount of moisture is produced, which in turn reduces the amount of air required for drying. This promotes drying, especially in the area of the low-pressure turbine section and the final stages. As a result, the drying effort is lower and areas with increased humidity due to evaporation of the condensate are minimized. Furthermore, the risk of corrosion and the associated consequential damage to the turbine is reduced.
  • the FIG. 1 shows a cross-sectional view of a condenser 1 for a steam power plant not shown in detail.
  • the condenser 1 comprises a plurality of tube bundles 2, which are arranged in a vapor flow 3. Cooled water flows through the tube bundles 2, which results in the water vapor from the vapor stream 3 condensing on the surfaces of the tube bundles 2 and coming as water into a region 4 in which the water collects into a condensate 5.
  • the steam flow 3 is fluidically connected to a low-pressure turbine part.
  • the condenser 1 comprises air coolers 6, which are arranged in the region of the tube bundles 2.
  • the condensate 5 forms a condensate surface.
  • float 7 8 are arranged on this condensate surface.
  • FIG. 1 For reasons of clarity, only three floating bodies 8 are provided with the reference number 8. These floats 8 wet the condensate surface 7 and thereby reduce the contact surface of the condensate surface 7 with the environment.
  • the floats 8 are spherical and / or ball-shaped. Any other shapes are possible as well as the simultaneous use of different shapes and sizes.
  • FIG. 2 For example, an arrangement is shown in which the floating body 8 are arranged one above the other in several rows, wherein the floating body 8 have different sizes and are formed spherical in a first approximation.
  • FIG. 3 shows a further embodiment of the invention.
  • the floats 8 are in the FIG. 3 formed like a ball and also arranged in layers one above the other. Likewise, the floating body 8 are formed with different sizes.
  • floating body 8 Another embodiment of the floating body 8 is that they are formed asymmetrically, which prevents rotation. This allows the surface to dry faster.
  • the specific gravity of the floats 8 is different and can be chosen so that the steam flow can not lift them out of the condensate.
  • the floats 8 may also have different weights, so that z. B. a better coverage of the condensate surface 7 is achieved. Likewise, a different density is suitable for this purpose.
  • the number of floats 8 is chosen large enough to cover the surface of the condensate in the Hotwell 9. However, the number of floating bodies 8 can also be significantly greater, so as to form, for example, a second layer of float 8.
  • the floats 8 are preferably equipped with non-absorbent surfaces, so that ideally no wetting of the surfaces takes place.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
EP14181545.6A 2014-08-20 2014-08-20 Condensateur pour une centrale à vapeur Withdrawn EP2987971A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP14181545.6A EP2987971A1 (fr) 2014-08-20 2014-08-20 Condensateur pour une centrale à vapeur
PCT/EP2015/069010 WO2016026883A1 (fr) 2014-08-20 2015-08-19 Condenseur destiné à une centrale thermique à vapeur
US15/503,702 US20170276432A1 (en) 2014-08-20 2015-08-19 Condenser for a steam power plant
DE112015003814.0T DE112015003814A5 (de) 2014-08-20 2015-08-19 Kondensator für ein Dampfkraftwerk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14181545.6A EP2987971A1 (fr) 2014-08-20 2014-08-20 Condensateur pour une centrale à vapeur

Publications (1)

Publication Number Publication Date
EP2987971A1 true EP2987971A1 (fr) 2016-02-24

Family

ID=51383597

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14181545.6A Withdrawn EP2987971A1 (fr) 2014-08-20 2014-08-20 Condensateur pour une centrale à vapeur

Country Status (4)

Country Link
US (1) US20170276432A1 (fr)
EP (1) EP2987971A1 (fr)
DE (1) DE112015003814A5 (fr)
WO (1) WO2016026883A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3444450A1 (fr) * 2017-08-18 2019-02-20 Siemens Aktiengesellschaft Panier ajouré pour un condensateur

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0134457A1 (fr) * 1983-07-19 1985-03-20 BBC Brown Boveri AG Centrale électrique à vapeur
DE4315864A1 (de) * 1993-05-12 1994-11-17 Frank Dr Ing Triesch Anordnung zum Wärmeaustausch
EP0710810A2 (fr) * 1994-11-02 1996-05-08 Siemens Aktiengesellschaft Dispositif de traitement des condensats dans une centrale thermique à vapeur et centrale fonctionnant selon ce dispositif

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1590877A (en) * 1925-08-17 1926-06-29 Black Wilbert Fire preventing and extinguishing means
GB768752A (en) * 1955-02-02 1957-02-20 Distillers Co Yeast Ltd Method for the discharge of electricity from liquids
US3401818A (en) * 1963-07-15 1968-09-17 Allplas A G Open top tank and covering for the contents thereof
US3346138A (en) * 1964-12-09 1967-10-10 Howard A Tubbs Gas-liquid separation
US3366266A (en) * 1966-02-18 1968-01-30 F E Myers & Bro Co Flexible float seal
US3454180A (en) * 1966-11-07 1969-07-08 Exxon Research Engineering Co Fire protective covering for stored hydrocarbons
CH510568A (de) * 1969-05-08 1971-07-31 Allplas Ag Verwendung von hohlen Schwimmkörpern
US3993214A (en) * 1975-08-25 1976-11-23 Georg Fischer Aktiengesellschaft Open liquid surface cover
US8297460B2 (en) * 2009-05-21 2012-10-30 Joseph Riordan Vapor barrier for flammable liquid storage tanks
FR3006431B1 (fr) * 2013-05-29 2015-06-05 Euro Heat Pipes Dispositif de transport de chaleur a fluide diphasique

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0134457A1 (fr) * 1983-07-19 1985-03-20 BBC Brown Boveri AG Centrale électrique à vapeur
DE4315864A1 (de) * 1993-05-12 1994-11-17 Frank Dr Ing Triesch Anordnung zum Wärmeaustausch
EP0710810A2 (fr) * 1994-11-02 1996-05-08 Siemens Aktiengesellschaft Dispositif de traitement des condensats dans une centrale thermique à vapeur et centrale fonctionnant selon ce dispositif

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3444450A1 (fr) * 2017-08-18 2019-02-20 Siemens Aktiengesellschaft Panier ajouré pour un condensateur
WO2019034355A1 (fr) * 2017-08-18 2019-02-21 Siemens Aktiengesellschaft Panier perforé pour condensateur

Also Published As

Publication number Publication date
WO2016026883A1 (fr) 2016-02-25
US20170276432A1 (en) 2017-09-28
DE112015003814A5 (de) 2017-05-04

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