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EP1777477B1 - Condenseur pour le cycle de vapeur d'une centrale d'énergie - Google Patents

Condenseur pour le cycle de vapeur d'une centrale d'énergie Download PDF

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Publication number
EP1777477B1
EP1777477B1 EP20050022931 EP05022931A EP1777477B1 EP 1777477 B1 EP1777477 B1 EP 1777477B1 EP 20050022931 EP20050022931 EP 20050022931 EP 05022931 A EP05022931 A EP 05022931A EP 1777477 B1 EP1777477 B1 EP 1777477B1
Authority
EP
European Patent Office
Prior art keywords
air cooler
condenser
air
tube bundle
condenser according
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.)
Ceased
Application number
EP20050022931
Other languages
German (de)
English (en)
Other versions
EP1777477A1 (fr
Inventor
Tobias Ellsel
Arne Dr. Grassmann
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
Siemens Corp
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 EP20050022931 priority Critical patent/EP1777477B1/fr
Priority to DE200550006221 priority patent/DE502005006221D1/de
Publication of EP1777477A1 publication Critical patent/EP1777477A1/fr
Application granted granted Critical
Publication of EP1777477B1 publication Critical patent/EP1777477B1/fr
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
    • F28B1/02—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using water or other liquid as the cooling medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B9/00—Auxiliary systems, arrangements, or devices
    • F28B9/10—Auxiliary systems, arrangements, or devices for extracting, cooling, and removing non-condensable gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2280/00—Mounting arrangements; Arrangements for facilitating assembling or disassembling of heat exchanger parts
    • F28F2280/02—Removable elements

Definitions

  • the invention relates to a steam condenser for the water-steam cycle of a power plant.
  • a steam condenser is for example from the DE 37 32 633 C2 known.
  • a steam condenser is connected downstream in a steam turbine plant of a steam turbine, which relaxes steam up to a very low pressure.
  • the condensate forming in the condenser is conducted in a liquid state into a collecting chamber, which is another component of the water-steam cycle.
  • a multiplicity of tube bundles in the condenser In order to liquefy the water vapor in the condenser, there is typically a multiplicity of tube bundles in the condenser, the individual tubes of which flow through a cooling medium, in particular water.
  • an air cooler may be arranged, to which a suction device for suction with the vapor entrained non-condensable gases, in particular air, is connected.
  • the extracted via the air cooler from the condenser steam-air mixture should have the highest possible proportion of air and a correspondingly low vapor content. Otherwise, there is an increased likelihood that accumulations of air, so-called air pockets, will form within the condenser, resulting in degraded heat transfer and consequent reduced performance of the condenser. This is the case in particular if the extracted air has only a slight supercooling with respect to the saturation state in the condenser. Furthermore, in such a case of limited condenser performance in a brass condenser, there is an increased risk of corrosion, especially the risk of ammonia corrosion.
  • the invention has for its object to minimize impairments of the normal operation of a power plant, which are associated with a condenser of the water-steam cycle, to minimize.
  • This object is achieved according to the invention by a condenser having the features of claim 1.
  • This condenser comprises a condensation chamber in which, in addition to the condensation of the steam provided devices, in particular bundles combined tubes, an air cooler is arranged, which traversed by a permeable with cooling water tube bundle and connected to a suction tube.
  • the air cooler is designed as a cartridge which can be inserted into an air suction line arranged inside the condensation chamber and connected to an outer wall of the condensation chamber.
  • the condenser may also have a plurality of condensation chambers and / or a plurality of air coolers.
  • the easy interchangeability of the air cooler including the tube bundle allows repair of the condenser in a very short time.
  • the integrated into the air cooler tube bundle ensures that extracted from the condenser steam-air mixture, especially compared to an air extraction without additional cooling, has a very low vapor content.
  • a significant supercooling of the air sucked out of the condenser by the tube bundle in the air cooler results in a significant increase of the air mass flow discharged from the condenser for a given output of the suction pump or suction pumps.
  • This increases with relatively little effort namely by modular replacement of the tube bundle prefabricated air cooler, the overall performance of the steam condenser, synonymous also referred to as a capacitor.
  • the cartridge-type design of the air cooler also has the advantage that the local distribution of the air extraction can be influenced in particular by the geometry of the internals in the air cooler.
  • the particularly suitable for retrofitting in existing power plants air cooler preferably has a circular cross-section.
  • the air cooler can thus be used without further conversion measures on the condenser in an existing air suction line also circular in cross-section.
  • the individual tubes of the tube bundle are distributed uniformly within the tube bundle.
  • the air cooler in this case its cross section is filled evenly with the tube bundle.
  • a particularly high number of cooling tubes can be installed in the air cooler, wherein the air flow is preferably sucked uniformly over the entire cross section of the air cooler.
  • a non-penetrated by the tube bundle, connected to the suction tube Beerabsaugkanal is formed within the cross section of the air cooler.
  • a plurality of subspaces are preferably formed in the air suction channel to allow a countercurrent cooling. This is a particularly good homogenization the air extraction from the condenser reached.
  • the tube bundle of the air cooler preferably connects to a water chamber arranged outside the condenser, in particular directly adjacent to its outer wall.
  • the tubes of the tube bundle of the air cooler open directly into the water chamber.
  • the advantage of the invention lies in the fact that an air cooler of a steam condenser is designed as Einsteckluftkühler with integrated tube bundle and thus particularly suitable for increasing the performance of existing power plants.
  • FIG. 1 An in FIG. 1 simplified illustrated in a section steam condenser 1, briefly referred to as a capacitor is integrated into a steam-water cycle of a power plant.
  • the principal function of the capacitor 1 corresponds to the function of the capacitor according to the DE 44 22 344 A1 ,
  • the interior of a condensation chamber 2 of the capacitor 1 after FIG. 1 is bounded by a tube plate 3, which has a circular opening 4, from which an air suction line 5 extends into the condensation chamber 2.
  • the upper side 6 of the air suction line 5 is closed, while at the bottom 7 are 7 Luftansaugö Maschinenmaschine devis.
  • the vapor contains a non-negligible proportion of non-condensable gases, in particular air, which, as indicated by double arrows, are sucked out of the condensation chamber 2 through the air intake openings 8.
  • the extracted air also carries steam.
  • This tube bundle 9 penetrates the tube sheet 3, the is the outer wall of the condensation chamber 2, and terminates in a water chamber 10, which is arranged immediately adjacent to the condensation chamber 2.
  • the tube bundle 9 is located within an inserted into the air suction line 5 insert tube 11 and thus forms an air cooler 12, which is designed as a retrofittable cartridge.
  • the air-vapor mixture flowing in the jacket space of the air cooler 12, that is to say outside the individual tubes 13 of the tube bundle 9, is discharged through a suction tube 14 arranged outside the condensation chamber 2.
  • the in FIG. 1 visible portion of the suction tube 14 is fixedly connected to the insert tube 11 and forms part of the cartridge 12, which is completely prefabricated before it is inserted into the air suction line 5.
  • the individual tubes 13 of the tube bundle 9 are held in support walls or support grids 15, which at the same time stabilize the insert tube 11.
  • Trained as a cartridge air cooler 12 is particularly suitable for upgrading power plants, the condenser 1 previously had an air extraction without additional, the air cooler 12 corresponding radiator. Likewise, the condenser 1 with air cooler 12 including integrated tube bundle 9, however, also suitable for newly constructed power plants. In any case, an extraction from the condenser 1 is achieved with very pronounced supercooling compared to conventional systems, whereby a very extensive removal of non-condensable gases from the condenser 1 is reliably possible even at relatively low power of the suction pipe 14 connected.
  • the embodiment according to FIG. 2 differs from the embodiment according to FIG. 1 mainly by the distribution of the tubes 13 within the insert tube 11 and - hereby connected - by the flow guidance in the air cooler 12.
  • FIG. 3 which a cross section of the air cooler 12 after FIG. 1 shows, as well as on FIG. 4 which in an analog representation details of the embodiment according to FIG. 2 shows.
  • the tube bundle 9 fills only a part of the circular cross-section of the insert tube 11, while in the remaining cross-sectional area an air suction channel 16 is formed.
  • This has two sub-chambers 17,18, namely an adjacent to the wall of the insert tube 11 outer subspace 17 and connected to the suction pipe 14 inner subspace 18, and thus allows a countercurrent cooling.
  • the air extraction from the condenser 1 is therefore evened out to a high degree, wherein at the same time the flow resistances, in particular in the case of a conversion in an already existing power plant, do not exceed an acceptable level.
  • the tubes 13 of the tube bundle 9 close in the embodiment of the FIG. 2 and 4 flush with the tube sheet 3 and open directly into the water chamber 10, while the inner subspace 18 of the Lucasabsaugkanals 16 extends in the longitudinal direction of the substantially cylindrical, cartridge-like air cooler 12 over the tube sheet 3 addition.
  • the formed in the manner of a partial annulus subspace 17 has the bottom side an inlet and outlet opening 21 to the water chamber 10.
  • the in FIG. 2 Visible portion of the suction pipe 14 is not necessarily part of the air cooler 12 manufactured as a finished assembled unit.
  • FIG. 5 and 6 illustrate the installation situation of the air cooler 12 in the condenser 1, wherein the arrangement according to FIG. 5 the air cooler 12 according to the FIG. 1 . 3 includes while the FIG. 6 the embodiment according to the FIG. 2 . 4 shows.
  • the largest part of the cross section of the condenser 1 is traversed by cooling tubes 20 arranged in bundles 19, on which the by far largest part of the vapor conducted into the condenser 1 condenses.
  • the air cooler 12 is arranged in parallel alignment with the cooling tubes 20 in the region of the minimum pressure.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Claims (9)

  1. Condenseur pour le circuit eau-vapeur d'une centrale électrique,
    comprenant au moins une chambre ( 2 ) de condensation,
    dans laquelle est disposé un dispositif ( 12 ) de refroidissement d'air, qui est traversé par un faisceau ( 9 ) tubulaire dans lequel peut passer de l'eau de refroidissement et qui est raccordé à un tuyau ( 14 ) d'aspiration,
    caractérisé en ce que
    le dispositif ( 12 ) de refroidissement d'air est constitué sous la forme d'une cartouche pouvant être mise dans un conduit ( 5 ) d'aspiration d'air disposé dans la chambre ( 2 ) de condensation.
  2. Condenseur suivant la revendication 1,
    caractérisé en ce que
    le dispositif ( 12 ) de refroidissement d'air a une section transversale circulaire.
  3. Condenseur suivant la revendication 1 ou 2,
    caractérisé en ce que
    le faisceau ( 9 ) tubulaire a des tubes ( 13 ) répartis uniformément qui remplissent uniformément notamment la section transversale du dispositif ( 12 ) de refroidissement d'air.
  4. Condenseur suivant la revendication 1 ou 2,
    caractérisé en ce que
    à l'intérieur de la section transversale du dispositif ( 12 ) de refroidissement d'air est formé un canal ( 16 ) d'évacuation d'air, qui n'est pas traversé par le faisceau ( 9 ) tubulaire et qui s'est raccordé au tuyau ( 14 ) d'aspiration.
  5. Condenseur suivant la revendication 4,
    caractérisé en ce que
    le canal ( 12 ) d'aspiration d'air est constitué en ayant plusieurs sous-espaces ( 17, 18 ) pour permettre un refroidissement à contre-courant.
  6. Condenseur suivant l'une des revendications 1 à 5,
    caractérisé en ce que
    le faisceau ( 9 ) tubulaire a des tubes ( 14 ) qui débouchent dans une chambre ( 10 ) à eau disposée à l'extérieur de la chambre ( 2 ) de condensation.
  7. Condenseur suivant la revendication 6,
    caractérisé en ce que
    le faisceau ( 9 ) tubulaire traverse un plateau ( 3 ) tubulaire qui délimite la chambre ( 2 ) de condensation et se termine au moins à peu près à affleurement avec celui-ci en débouchant dans la chambre ( 10 ) à eau.
  8. Condenseur suivant l'une des revendications 1 à 7,
    caractérisé en ce que
    des tubes ( 20 ) de refroidissement, qui entourent le dispositif ( 12 ) de refroidissement d'air et qui servent à faire passer à l'état liquide la vapeur envoyée dans la chambre ( 2 ) de condensation, sont mis en faisceau dans la chambre ( 2 ) de condensation.
  9. Condenseur suivant la revendication 8,
    caractérisé en ce que
    le dispositif ( 12 ) de refroidissement d'air est monté en parallèle aux tubes ( 20 ) de refroidissement.
EP20050022931 2005-10-20 2005-10-20 Condenseur pour le cycle de vapeur d'une centrale d'énergie Ceased EP1777477B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20050022931 EP1777477B1 (fr) 2005-10-20 2005-10-20 Condenseur pour le cycle de vapeur d'une centrale d'énergie
DE200550006221 DE502005006221D1 (de) 2005-10-20 2005-10-20 Kondensator für den Wasser-Dampf-Kreislauf einer Kraftwerksanlage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20050022931 EP1777477B1 (fr) 2005-10-20 2005-10-20 Condenseur pour le cycle de vapeur d'une centrale d'énergie

Publications (2)

Publication Number Publication Date
EP1777477A1 EP1777477A1 (fr) 2007-04-25
EP1777477B1 true EP1777477B1 (fr) 2008-12-10

Family

ID=36499423

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050022931 Ceased EP1777477B1 (fr) 2005-10-20 2005-10-20 Condenseur pour le cycle de vapeur d'une centrale d'énergie

Country Status (2)

Country Link
EP (1) EP1777477B1 (fr)
DE (1) DE502005006221D1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2791400A (en) * 1953-10-30 1957-05-07 Frederick W Riehl Surface condenser
BE755389A (fr) * 1969-08-29 1971-02-01 Bbc Brown Boveri & Cie Procede pour la condensation de la vapeur d'eau et installationpour la mise en oeuvre de ce procede
JPS597886A (ja) * 1982-07-05 1984-01-17 Hitachi Ltd 復水器
DE3732633A1 (de) * 1987-09-28 1989-04-06 Siemens Ag Kondensator fuer den wasser-dampf-kreislauf von kraftwerksanlagen
DE4422344A1 (de) 1994-06-27 1996-01-04 Siemens Ag Kondensator

Also Published As

Publication number Publication date
DE502005006221D1 (de) 2009-01-22
EP1777477A1 (fr) 2007-04-25

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