EP0908669B1 - Réchauffeur d'eau d'alimentation à basse pression - Google Patents

Réchauffeur d'eau d'alimentation à basse pression Download PDF

Info

Publication number
EP0908669B1
EP0908669B1 EP97810761A EP97810761A EP0908669B1 EP 0908669 B1 EP0908669 B1 EP 0908669B1 EP 97810761 A EP97810761 A EP 97810761A EP 97810761 A EP97810761 A EP 97810761A EP 0908669 B1 EP0908669 B1 EP 0908669B1
Authority
EP
European Patent Office
Prior art keywords
low
bank
pressure feedwater
feedwater preheater
steam
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.)
Expired - Lifetime
Application number
EP97810761A
Other languages
German (de)
English (en)
Other versions
EP0908669A1 (fr
Inventor
Herbert Wernig
Mustafa Dr. Youssef
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.)
General Electric Switzerland GmbH
Original Assignee
Alstom Schweiz 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 Alstom Schweiz AG filed Critical Alstom Schweiz AG
Priority to DE59708896T priority Critical patent/DE59708896D1/de
Priority to EP97810761A priority patent/EP0908669B1/fr
Priority to JP10285266A priority patent/JP2000240903A/ja
Priority to US09/168,995 priority patent/US5975030A/en
Publication of EP0908669A1 publication Critical patent/EP0908669A1/fr
Application granted granted Critical
Publication of EP0908669B1 publication Critical patent/EP0908669B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
    • F22D1/32—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines

Definitions

  • the invention relates to a low-pressure feed water preheater heated by bleed steam or heaters with two-flow tube bundles Tube plate design for power plants, and in particular a construction for the Tube bundle carrier.
  • Low pressure feed water preheaters are well known. You are in one Power plant located between the condenser and a degasser and serve to preheat the feed water in a steam-water cycle Heat exchange between steam and feed water flowing in pipes. The For this purpose, steam is tapped by a low-pressure turbine and into the preheater passed where it condenses on the pipes and heats the feed water. In one District heating plant is used by the heater to reheat the heating water through a district heating circuit flows.
  • the feed water flows from a water chamber divided into two parts one end of the preheater is arranged via a two-flow system.
  • This consists of a bundle of tubes that are either straight along with one Deflection chamber or U-shaped.
  • the water flows from the first Part of the water chamber through the pipes via the deflection chamber or via the U back to the second part of the water chamber, using the cold half of the pipes as cold leg or the warm half is referred to as a warm leg.
  • the tube bundle is in one tube feedwater preheater Plate firmly anchored, which is then arranged in the water chamber. furthermore the tubes are held and supported by bundle beams, each made of Support plates and side members exist.
  • the steam tapped by the turbine enters the steam inlet opening Low pressure feed water preheater and is distributed through a baffle plate, so he first in an annular vapor space between the casing and flows into the tube bundle and then radially in along the entire tube bundle length the bundle penetrates and condenses on the pipe surfaces.
  • the so-called Bundelgasse Direct inflow of the steam in the Bundelgasse is provided by side panels arranged on the outside prevented.
  • One or more ventilation pipes are arranged in the Bundelgasse. These have several suction holes through which the non-condensable gases be sucked off. The gases collect in the zone where the lowest pressure prevails.
  • a feed water preheater is described in the Bundelgasse between the cold and warm leg of the tube bundle one Partition that extends along the entire length of the tube bundle extends.
  • the dividing wall in the Bundelgasse results on both sides and in a low pressure zone near it, which does not extend into the tube bundle.
  • the continuous partition wall over the bundle length is with the side panels Bundle carrier welded.
  • the perforated support plate consisting of two halves is also welded to the side panels and the partition.
  • the Welded connections are technically well suited for this type of preheater
  • fabrication of the bundle carriers requires one with this welded construction great time, labor and cost.
  • the invention has for its object the great effort in manufacturing to avoid the bundle carrier with partition and a construction for the To find bundle carriers whose manufacture is as simple and inexpensive as possible and in particular requires as little or no welding work as possible.
  • the two-flow tube bundle has a bundle support structure, the support plates of each made in one piece and thus continuous, and the partition individual sheet metal parts that exist between the side panels and continuous support plates are arranged.
  • the sheet metal parts of the partition are mechanical guided by a toothing in the support plates.
  • the sheet metal parts of the Partition wall at least one on each side facing the support plates Serrations that match openings in the support plate.
  • the side panels are like the support plates, also made from a single piece, continuously and passed through the support plate.
  • This construction for the bundle carrier has the advantage that the individual parts that Support plates, dividing wall parts and side panels each made of one piece by machine manufactured and, if possible, assembled without any further machine operation become.
  • the time-consuming welding work is no longer necessary and the result is a strong one simplified manufacture of the bundle carrier, saving time and costs be significantly reduced.
  • the feed water preheater in Figures 1 a), b) and 2 points at its Steam jacket 1 has a steam inlet opening 2 and a condensate outlet opening 3 on.
  • the steam jacket 1 encloses a steam chamber 4 and a tube bundle 5 the steam inlet opening 2 is a cylindrically curved baffle plate 13, by which the incoming steam is deflected into the steam space 4 and that Tube bundle 5 does not flow directly.
  • At one end of the preheater is one divided water chamber 6 with inlet and outlet openings 18 arranged from the the feed water through the two legs of the tube bundle 5 and back into the Water chamber flows.
  • the tube bundle 5 is anchored in a tube sheet 7 and supported by a tube bundle support, the support plates 8 and side plates 9 having.
  • the support plates 8 are also tie rods 10 with spacers 19 and Nuts 20 held together. Between the pipe legs in Bundelgasse a partition 11 is arranged, on both sides of which there are suction pipes 12 The steam is vented. As already mentioned, the zone is formed here of the lowest pressure so that the non-condensable gases are in this zone collect and be led away through openings in the suction pipes 12.
  • Figure 2 shows the profile of a support plate 8 with drilled openings for the suction pipes 12 and the tie rods 10 and milled slot openings 14 for the side plates 9. The The outline of the perforation for the tube bundle is indicated by dashed lines.
  • the support plates 8 are also on two on the inner wall of the steam jacket 1 arranged angle 15 supported on which the support plates 8 with the Pipe bundle 5 due to the uneven thermal expansion of the warm and cold pipe leg, can move freely in the longitudinal and transverse directions.
  • the Support plate 8 also has four supports 21 in the form of wings for the purpose lateral guidance of the bundle carrier on the inner wall of the steam jacket 1.
  • the Supports 21 are each shaped so that their edge parallel to the inner wall of the Steam jacket 1 runs.
  • the support 21 is not directly on the inner wall of the Steam jacket 1, but it exists between it and the inner wall of the Steam jacket 1 a free or play for displacements of the support plates 8th due to thermal expansion of the tube bundle.
  • the support plate 8 may thus due to thermal expansion of the tube bundle 5 move to Support 21 comes into contact with the inner wall of the steam jacket 1 and there is supported.
  • FIG. 3 again shows the support plates 8 with milled slot openings 14 the side plates 9 are pushed, and the drill holes for the Suction pipes 12 and the tie rods 10.
  • the individual sheet metal parts of the partition 11 have, for example, at all four corners and in the middle of the edges that the Support plate 8 are facing, teeth 16 according to Figure 4.
  • This Teeth 16 are openings 17 in them in the assembly during assembly Support plate 8 introduced.
  • the attachment and guidance of the partition parts 11 in the Support plates 8 are through the teeth on each side that of the support plate is guaranteed.
  • apart from the shown Tooth 16 with right-angled teeth also other types of teeth conceivable, such as gears with triangular shapes.
  • the support plates 8 are by means of tie rods 10, spacer sleeves 19 and nuts 20 clamped together.
  • the tie rods 10 and spacer sleeves 19 expand as a result Warm up and move together with the support plates 8 in Longitudinal direction.
  • the tubes also expand in the longitudinal direction, however a different extent and due to the different temperatures of the cold and warm leg uneven, which is due to the free displacement of the tubes is guaranteed in the support plates 8. All components of the bundle carrier according to the invention consisting of support plates, dividing wall parts, Side plates, spacers and tie rods are completed in the factory Prefabricated and fast, inexpensive without (or as little) welding work assembled.

Landscapes

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

Claims (7)

  1. Réchauffeur d'eau d'alimentation à basse pression ou dispositif de chauffage dans des centrales électriques, qui est chauffé par de la vapeur soutirée, comprenant au moins à chaque fois une ouverture .d'entrée de vapeur (2) prévue sur l'enveloppe de vapeur (1) et une ouverture de sortie de condensat (3) et un faisceau tubulaire à deux flux (5) du type à plaque, qui présente une branche froide et une branche chaude, au moins une plaque de support (8) disposée perpendiculairement à l'axe du faisceau et des tôles latérales (9) s'étendant parallèlement à l'axe du faisceau, et dans lequel est disposée, au milieu du faisceau tubulaire (5) entre la branche chaude et la branche froide du faisceau, une paroi de séparation (11) le long de toute la longueur de la branche tubulaire, caractérisé en ce que les plaques de support individuelles (8) sont fabriquées chacune d'une seule pièce et sont continues, et la paroi de séparation (11) se compose de parties de tôle individuelles qui sont connectées aux plaques de support (8).
  2. Réchauffeur d'eau d'alimentation à basse pression ou dispositif de chauffage selon la revendication 1, caractérisé en ce que les tôles latérales (9) sont chacune fabriquées à. partir d'une pièce unique et sont continues et sont guidées à travers des ouvertures fendues (14) dans les plaques de support (8).
  3. Réchauffeur d'eau d'alimentation à basse pression ou dispositif de chauffage selon la revendication 1, caractérisé en ce que les parties de tôle individuelles de la paroi de séparation (11) sur chacun des deux côtés qui est tourné vers une plaque de support (8), présentent un ou plusieurs engrenages (16) et chaque plaque de support (8) présente une ouverture (17) adaptée à chacun de ces engrenages (16).
  4. Réchauffeur d'eau d'alimentation à basse pression ou dispositif de chauffage selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les plaques de support (8) du support de faisceau sont tendues les unes par rapport aux autres au moyen de tirants (10) et de manchons d'espacement (19) entre les plaques de support (8).
  5. Réchauffeur d'eau d'alimentation à basse pression ou dispositif de chauffage selon la revendication 1, caractérisé en ce que les plaques de support (8) sont supportées avec les faisceaux tubulaires (5) sur deux coins (15) disposés sur la paroi intérieure de l'enveloppe de vapeur (1), de sorte que le faisceau tubulaire (5) se déplace librement horizontalement suite à des dilatations thermiques.
  6. Réchauffeur d'eau d'alimentation à basse pression ou dispositif de chauffage selon la revendication 1, caractérisé en ce que chaque plaque de support (8) présente au moins quatre appuis (21) qui sont disposés avec un espace libre vers la paroi intérieure de l'enveloppe de vapeur (1), qui permet un déplacement libre du support de faisceau dans la direction longitudinale et la direction transversale.
  7. Réchauffeur d'eau d'alimentation à basse pression ou dispositif de chauffage selon la revendication 1, caractérisé en ce que, de part et d'autre de la paroi de séparation (11), dans des zones de pressions les plus basses, s'étendent des tubes d'aspiration (12) pour l'aspiration de gaz non condensables.
EP97810761A 1997-10-09 1997-10-09 Réchauffeur d'eau d'alimentation à basse pression Expired - Lifetime EP0908669B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE59708896T DE59708896D1 (de) 1997-10-09 1997-10-09 Niederdruck-Speisewasservorwärmer
EP97810761A EP0908669B1 (fr) 1997-10-09 1997-10-09 Réchauffeur d'eau d'alimentation à basse pression
JP10285266A JP2000240903A (ja) 1997-10-09 1998-10-07 低圧供給水予熱器又はヒータ
US09/168,995 US5975030A (en) 1997-10-09 1998-10-09 Low-pressure feedwater preheater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97810761A EP0908669B1 (fr) 1997-10-09 1997-10-09 Réchauffeur d'eau d'alimentation à basse pression

Publications (2)

Publication Number Publication Date
EP0908669A1 EP0908669A1 (fr) 1999-04-14
EP0908669B1 true EP0908669B1 (fr) 2002-12-04

Family

ID=8230424

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97810761A Expired - Lifetime EP0908669B1 (fr) 1997-10-09 1997-10-09 Réchauffeur d'eau d'alimentation à basse pression

Country Status (4)

Country Link
US (1) US5975030A (fr)
EP (1) EP0908669B1 (fr)
JP (1) JP2000240903A (fr)
DE (1) DE59708896D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140202399A1 (en) * 2013-01-21 2014-07-24 Maarky Thermal Systems Inc. Dual end plate subcooling zone for a feedwater heater
US9541280B2 (en) * 2014-06-04 2017-01-10 Fives North American Combustion, Inc. Ultra low NOx combustion for steam generator
CN106288322B (zh) * 2016-10-18 2022-01-04 东方电气集团东方锅炉股份有限公司 一种减小低压加热器设备直径的无纵掠换热过热段结构

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2995341A (en) * 1959-01-08 1961-08-08 Griscom Russell Co Feed water heater sub-cooling zone
CH393366A (de) * 1962-05-18 1965-06-15 Bbc Brown Boveri & Cie Dampfbeheizter Speisewasservorwärmer
US3630276A (en) * 1970-02-10 1971-12-28 Nasa Shell-side liquid metal boiler
US3683866A (en) * 1970-11-20 1972-08-15 Combustion Eng Superheating steam generator
DE2458437C2 (de) * 1974-12-10 1976-10-14 Kraftwerk Union Ag Speisewasservorwaermer mit zwei dampfraeumen
DE2642800C2 (de) * 1976-09-23 1982-12-09 Deggendorfer Werft Und Eisenbau Gmbh, 8360 Deggendorf Rohrbodenanschluß für Rohrbündel-Reaktoren oder Rohrbündel-Wärmeaustauscher
DE2820736A1 (de) 1978-05-12 1979-11-15 Bbc Brown Boveri & Cie Speisewasservorwaermer
FR2477265A1 (fr) * 1980-02-29 1981-09-04 Framatome Sa Generateur de vapeur a prechauffage
FR2644281B1 (fr) * 1989-03-09 1991-06-07 Framatome Sa Dispositif de stabilisation des tubes du faisceau d'un generateur de vapeur comportant des barres antivibratoires

Also Published As

Publication number Publication date
EP0908669A1 (fr) 1999-04-14
US5975030A (en) 1999-11-02
DE59708896D1 (de) 2003-01-16
JP2000240903A (ja) 2000-09-08

Similar Documents

Publication Publication Date Title
DE102007030764B4 (de) Dampfturbine mit Heizdampfentnahme
EP0271434B1 (fr) Chaudière de chauffage d'acier
DE1601240A1 (de) Mit Rippen versehener Waermeaustauscher
EP0908669B1 (fr) Réchauffeur d'eau d'alimentation à basse pression
DE2200916B2 (de) Wärmeaustauscher
DE1200834B (de) Roehrendampferzeuger mit waagerechten Kuehlrohrbaendern
DE2459472B1 (de) Gasbeheizter dampferzeuger, insbesondere fuer kernreaktoranlagen
EP0325758A1 (fr) Condenseur de vapeur
EP0123986B1 (fr) Réchauffeur d'eau d'alimentation
DE2458471B1 (de) Speisewasservorwaermer mit zwei dampfraeumen
DE3911257C2 (de) Wärmetauscher
DE4115250C1 (fr)
EP0098631B1 (fr) Réchauffeur d'eau d'alimentation à haute pression disposé verticalement à construction à collecteur avec une chambre de désurchauffe
EP1602886A2 (fr) Chaudière
DE2414295C2 (de) Wärmeaustauscher zur Kondensation von Dampf
DE69808686T2 (de) Raumsparender Wärmetauscher
DE1939245A1 (de) Kondensator fuer das Kopfprodukt einer Destillier- oder Rektifizier-Kolonne
DE1072635B (de) Kuhlvorrich tung mit bezuglich des zu kühlenden Mediums parallelgeschalteten Rohrelementen
EP1008803B1 (fr) Réchauffeur d'eau d'alimentation pour centrale thermique à vapeur
DE2925171C2 (fr)
DE1679634C (de) Plattenartiger Wärmeaustauscher für einen atmosphärischen, beheizten Boiler
CH393366A (de) Dampfbeheizter Speisewasservorwärmer
DE536192C (de) Waermeaustauscher mit hintereinandergeschalteten Rohrgruppen
DE1926614A1 (de) Roehrenwaermetauscher
DE2316263A1 (de) Vorrichtung zum tragen eines roehrenwaermeaustauschers

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR NL

17P Request for examination filed

Effective date: 19990906

AKX Designation fees paid

Free format text: DE FR NL

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 20011120

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ALSTOM

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ALSTOM (SWITZERLAND) LTD

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR NL

REF Corresponds to:

Ref document number: 59708896

Country of ref document: DE

Date of ref document: 20030116

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20030905

REG Reference to a national code

Ref country code: NL

Ref legal event code: SD

Effective date: 20120709

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 59708896

Country of ref document: DE

Representative=s name: UWE ROESLER, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 59708896

Country of ref document: DE

Representative=s name: RUEGER, BARTHELT & ABEL, DE

Effective date: 20120713

Ref country code: DE

Ref legal event code: R082

Ref document number: 59708896

Country of ref document: DE

Representative=s name: ROESLER, UWE, DIPL.-PHYS.UNIV., DE

Effective date: 20120713

Ref country code: DE

Ref legal event code: R081

Ref document number: 59708896

Country of ref document: DE

Owner name: GENERAL ELECTRIC TECHNOLOGY GMBH, CH

Free format text: FORMER OWNER: ALSTOM (SWITZERLAND) LTD., BADEN, CH

Effective date: 20120713

Ref country code: DE

Ref legal event code: R081

Ref document number: 59708896

Country of ref document: DE

Owner name: ALSTOM TECHNOLOGY LTD., CH

Free format text: FORMER OWNER: ALSTOM (SWITZERLAND) LTD., BADEN, CH

Effective date: 20120713

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

Owner name: ALSTOM TECHNOLOGY LTD., CH

Effective date: 20120918

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 19

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 59708896

Country of ref document: DE

Representative=s name: RUEGER, BARTHELT & ABEL, DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: HC

Owner name: GENERAL ELECTRIC TECHNOLOGY GMBH; CH

Free format text: DETAILS ASSIGNMENT: VERANDERING VAN EIGENAAR(S), VERANDERING VAN NAAM VAN DE EIGENAAR(S); FORMER OWNER NAME: ALSTOM TECHNOLOGY LTD

Effective date: 20160623

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 59708896

Country of ref document: DE

Representative=s name: RUEGER, BARTHELT & ABEL, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 59708896

Country of ref document: DE

Owner name: GENERAL ELECTRIC TECHNOLOGY GMBH, CH

Free format text: FORMER OWNER: ALSTOM TECHNOLOGY LTD., BADEN, CH

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 20

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

Owner name: ALSTOM TECHNOLOGY LTD, CH

Effective date: 20161124

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20161025

Year of fee payment: 20

Ref country code: DE

Payment date: 20161027

Year of fee payment: 20

Ref country code: NL

Payment date: 20161026

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59708896

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MK

Effective date: 20171008