EP0123986A1 - Réchauffeur d'eau d'alimentation - Google Patents

Réchauffeur d'eau d'alimentation Download PDF

Info

Publication number
EP0123986A1
EP0123986A1 EP84104151A EP84104151A EP0123986A1 EP 0123986 A1 EP0123986 A1 EP 0123986A1 EP 84104151 A EP84104151 A EP 84104151A EP 84104151 A EP84104151 A EP 84104151A EP 0123986 A1 EP0123986 A1 EP 0123986A1
Authority
EP
European Patent Office
Prior art keywords
steam
desuperheater
chambers
feed water
water preheater
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.)
Granted
Application number
EP84104151A
Other languages
German (de)
English (en)
Other versions
EP0123986B1 (fr
Inventor
Helmut Dipl.-Ing. Lang
Son Dr. Ing. Le Mong
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.)
BBC Brown Boveri AG Switzerland
Original Assignee
BBC Brown Boveri AG Switzerland
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 BBC Brown Boveri AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Publication of EP0123986A1 publication Critical patent/EP0123986A1/fr
Application granted granted Critical
Publication of EP0123986B1 publication Critical patent/EP0123986B1/fr
Expired 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 present invention relates to a feed water preheater of the horizontal type according to the preamble of claim 1.
  • the feed water is gradually warmed up in preheaters before it enters the steam generator.
  • preheaters can be designed in a vertical or horizontal construction. If superheated steam is introduced into a feed water preheater, part of the superheating heat can be used thermodynamically in a desuperheater if the steam is sufficiently overheated.
  • the steam is introduced into the desuperheater through a nozzle directed towards the tube bundle and is passed in countercurrent around the tube bundle and thereby heats the feed water flowing in the tubes, the heating taking place by convective means.
  • the bleed steam is used corresponding to the degree of superheating at high speed in the axial direction of the preheater through one or more chambers arranged in the desuperheater and then flows into the condensation zone of the preheater.
  • the steam pressure in the condensation part of the preheater is significantly lower than at the inlet of the desuperheater due to the flow losses the steam suffers when it traverses until it leaves the desuperheater.
  • the steam outlet openings are arranged on the end face of the desuperheater facing the condensation part or on the last desuperheater support plate. At this point, part of the preheater tubes is unsupported, and the steam flows through the outlet openings directly to and along the condensation tubes.
  • Both embodiments show a horizontal preheater with built-in desuperheater at the feed water outlet and flooded condensate subcooler at the feed water inlet.
  • the desuperheating bundles are designated 1, the condensation bundles 2 and the supercooling bundles 3.
  • a steam jacket 5, only partially shown, is placed over the tube bundle.
  • the tubes 6 combined into the bundles mentioned are welded into the tube sheet 4.
  • the actual desuperheater is formed by a sheet metal jacket 12 which is closed on all sides and carries the steam inlet 7 on its upper side.
  • the supercooling bundle 3 is enclosed on all sides by a supercooling jacket 8. This is by means of baffles 9 in individual chambers shares, the last of which carries the condensate outlet 10.
  • the cooler is flooded, the condensate level is designated 11.
  • the overheated bleed steam is conducted in the desuperheater at a certain speed in countercurrent to the feed water and releases its superheat.
  • the size of the desuperheater must be selected correctly so that the point at which the outer walls of the pipes reach the local saturation temperature and thus the condensation does not occur within the desuperheater. This means that, depending on the size of the desuperheater, the number of chambers required and thus the number of steam deflections is even or odd. This is crucial for the constructive design of the transition from the desuperheating zone to the condensation zone.
  • FIGS. I and la The solution according to the invention is shown in FIGS. I and la, as it presents itself in the case of an odd number of chambers. For the sake of simplicity, only one chamber is shown; it is understood, however, that even with three or five chambers, the same solution, which always affects only the last of the desuperheating chambers, is used.
  • FIGS. 2 and 2a show that solution which is used for an even number of deflection chambers.
  • a desuperheater is shown, which is divided into two chambers by means of a baffle 18.
  • the desuperheater bundle 1 When flowing into the first chamber from top to bottom resp. from the outside in, the desuperheater bundle 1 is in the last chamber from bottom to top resp. Flows through from inside to outside. Accordingly, any steam above the tube bundle 1 should be drawn off.
  • the sheet metal jacket 12 which is closed on all sides, is now provided in the rearmost chamber with lateral steam outlet openings 13, which in the example shown extend almost over the entire length of the chamber.
  • the end support plate 19 directly above the tube to interrupt the bundle. Together with the curved upper part of the sheet metal jacket 12, the support plate 19 thus forms a further outlet opening 20 for the heated steam.
  • the parts of the preheater jacket opposite the side openings 13 are covered with plated sheets 16.

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)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Air Supply (AREA)
EP84104151A 1983-04-29 1984-04-12 Réchauffeur d'eau d'alimentation Expired EP0123986B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2308/83 1983-04-29
CH230883 1983-04-29

Publications (2)

Publication Number Publication Date
EP0123986A1 true EP0123986A1 (fr) 1984-11-07
EP0123986B1 EP0123986B1 (fr) 1986-11-12

Family

ID=4230759

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84104151A Expired EP0123986B1 (fr) 1983-04-29 1984-04-12 Réchauffeur d'eau d'alimentation

Country Status (11)

Country Link
US (1) US4541366A (fr)
EP (1) EP0123986B1 (fr)
AU (1) AU560111B2 (fr)
CA (1) CA1255169A (fr)
DE (1) DE3461332D1 (fr)
DK (1) DK159024C (fr)
ES (1) ES8503817A1 (fr)
HU (1) HU191759B (fr)
PL (1) PL143578B1 (fr)
RO (1) RO89632A (fr)
ZA (1) ZA843150B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5067446A (en) * 1989-10-31 1991-11-26 Asea Brown Boveri Ltd. Apparatus for degassing and heating water
EP0735317A1 (fr) * 1995-03-27 1996-10-02 Siemens Aktiengesellschaft Echangeur de chaleur
RU177310U1 (ru) * 2017-08-17 2018-02-15 Открытое акционерное общество "Научно-производственное объединение по исследованию и проектированию энергетического оборудования им. И.И. Ползунова" (ОАО "НПО ЦКТИ") Горизонтальный подогреватель
RU2670999C2 (ru) * 2016-05-11 2018-10-29 Андрей Витальевич Билан Многоходовый горизонтальный сетевой подогреватель

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4858564A (en) * 1988-05-16 1989-08-22 Foster Wheeler Energy Corporation Feedwater heater with improved steam distribution
US5377489A (en) * 1991-05-09 1995-01-03 Westinghouse Electric Corporation Internal moisture separation cycle for a low pressure turbine
RU2489645C1 (ru) * 2011-12-27 2013-08-10 Открытое акционерное общество "Российский концерн по производству электрической и тепловой энергии на атомных станциях" (ОАО "Концерн Росэнергоатом") Пароводяной подогреватель
RU2674816C1 (ru) * 2018-01-30 2018-12-13 Открытое акционерное общество "Таганрогский котлостроительный завод "Красный котельщик" (ОАО ТКЗ "Красный котельщик") Горизонтальный парожидкостный теплообменник

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR946944A (fr) * 1947-05-20 1949-06-17 Delas Condenseurs Perfectionnement aux échangeurs thermiques à haute pression
US3407873A (en) * 1965-10-07 1968-10-29 G & J Weir Ltd Heat exchanger construction
GB1383396A (en) * 1971-04-05 1974-02-12 Tokyo Shibaura Electric Co Boiler feed water heater
FR2433706A1 (fr) * 1978-08-18 1980-03-14 Bbc Brown Boveri & Cie Rechauffeur d'eau d'alimentation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795273A (en) * 1972-06-12 1974-03-05 Foster Wheeler Corp Feedwater heater
CH628410A5 (de) * 1978-05-31 1982-02-26 Bbc Brown Boveri & Cie Speisewasservorwaermer.
JPS5914682B2 (ja) * 1980-09-29 1984-04-05 株式会社日立製作所 給水加熱器
EP0097989B1 (fr) * 1982-06-30 1985-05-22 BBC Aktiengesellschaft Brown, Boveri & Cie. Réchauffeur d'eau d'alimentation à haute pression disposé verticalement à construction à collecteur avec un désurchauffeur et un séparateur eau-vapeur

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR946944A (fr) * 1947-05-20 1949-06-17 Delas Condenseurs Perfectionnement aux échangeurs thermiques à haute pression
US3407873A (en) * 1965-10-07 1968-10-29 G & J Weir Ltd Heat exchanger construction
GB1383396A (en) * 1971-04-05 1974-02-12 Tokyo Shibaura Electric Co Boiler feed water heater
FR2433706A1 (fr) * 1978-08-18 1980-03-14 Bbc Brown Boveri & Cie Rechauffeur d'eau d'alimentation

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5067446A (en) * 1989-10-31 1991-11-26 Asea Brown Boveri Ltd. Apparatus for degassing and heating water
EP0735317A1 (fr) * 1995-03-27 1996-10-02 Siemens Aktiengesellschaft Echangeur de chaleur
RU2670999C2 (ru) * 2016-05-11 2018-10-29 Андрей Витальевич Билан Многоходовый горизонтальный сетевой подогреватель
RU177310U1 (ru) * 2017-08-17 2018-02-15 Открытое акционерное общество "Научно-производственное объединение по исследованию и проектированию энергетического оборудования им. И.И. Ползунова" (ОАО "НПО ЦКТИ") Горизонтальный подогреватель

Also Published As

Publication number Publication date
AU560111B2 (en) 1987-03-26
DE3461332D1 (en) 1987-01-02
DK159024B (da) 1990-08-20
RO89632A (fr) 1986-06-30
HU191759B (en) 1987-04-28
ZA843150B (en) 1984-12-24
DK209584A (da) 1984-10-30
PL143578B1 (en) 1988-02-29
US4541366A (en) 1985-09-17
ES532002A0 (es) 1985-03-01
DK159024C (da) 1991-01-28
PL247444A1 (en) 1985-01-02
CA1255169A (fr) 1989-06-06
DK209584D0 (da) 1984-04-26
AU2729684A (en) 1984-11-01
ES8503817A1 (es) 1985-03-01
EP0123986B1 (fr) 1986-11-12
HUT38141A (en) 1986-04-28

Similar Documents

Publication Publication Date Title
DE2033128B2 (de) Wärmeaustauschaggregat mit Wärmetauschern, bei denen innerhalb eines AuBenmantels Rohrreihen durch einen Zwischenmantel umschlossen sind
DE1958885B2 (de) Einrichtung zum trocknen und ueberhitzen von nassdampf in dampfkraftanlagen
DE19545308A1 (de) Konvektiver Gegenstromwärmeübertrager
EP0123986B1 (fr) Réchauffeur d'eau d'alimentation
DE2054578A1 (de) Mantel und Rohrenwarmeaustauscher zur Dampferzeugung
DE1927949A1 (de) Dampferzeugungs- und -ueberhitzungsvorrichtung,insbesondere fuer mit geschmolzenem Metall,geschmolzenem Metallsalz od.dgl. als Waermeuebertrager arbeitende Kernreaktoren
DE4019526A1 (de) Wuerzekochvorrichtung mit aussenkocher
AT395756B (de) Speisewasservorwaermer
DE3538515C2 (fr)
DE2262151A1 (de) Dampferzeuger, insbesondere fuer druckwasserreaktoren
DE3714671A1 (de) Waermetauscher
DE3121297C2 (de) Vorrichtung zum Regeln der Temperatur eines korrosiven Gases, insbesondere Synthesegas
DE2441324C2 (de) Speisewasservorwärmer mit einem Enthitzer
DE4018569A1 (de) Waermetauscher zum kuehlen von heissdampf
DE2917498C2 (de) Oberflächen-Wärmetauscher
EP0509298B1 (fr) Réchauffeur d'eau d'alimentation à haute pression
DE2813614C2 (de) Indirekt beheizter Dampferzeuger
DE1021377B (de) Einrichtung zum Schutze des Zwischenueberhitzers in Hochdruckdampfkraftanlagen
DE1145183B (de) Aus Doppelrohrregistern aufgebauter Abhitzekessel mit bestifteten Heizrohren hoher Heizflaechenbelastung
AT229335B (de) Wärmeaustauscher
CH393366A (de) Dampfbeheizter Speisewasservorwärmer
DE19511264C2 (de) Wärmetauscher
DE3121346C2 (fr)
DE2408099A1 (de) Dampferzeuger mit vorwaermer
CH226310A (de) Wärmeaustauscher.

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

Designated state(s): CH DE FR IT LI SE

17P Request for examination filed

Effective date: 19840914

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR IT LI SE

ITF It: translation for a ep patent filed

Owner name: DE DOMINICIS & MAYER S.R.L.

REF Corresponds to:

Ref document number: 3461332

Country of ref document: DE

Date of ref document: 19870102

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
ITTA It: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 84104151.0

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

Ref country code: CH

Payment date: 19970429

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980430

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980430

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: SE

Payment date: 20020327

Year of fee payment: 19

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

Ref country code: FR

Payment date: 20020416

Year of fee payment: 19

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

Ref country code: DE

Payment date: 20020418

Year of fee payment: 19

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF THE APPLICANT RENOUNCES

Effective date: 20021213

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030413

EUG Se: european patent has lapsed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031231

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST