EP0123986B1 - Speisewasservorwärmer - Google Patents

Speisewasservorwärmer Download PDF

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Publication number
EP0123986B1
EP0123986B1 EP84104151A EP84104151A EP0123986B1 EP 0123986 B1 EP0123986 B1 EP 0123986B1 EP 84104151 A EP84104151 A EP 84104151A EP 84104151 A EP84104151 A EP 84104151A EP 0123986 B1 EP0123986 B1 EP 0123986B1
Authority
EP
European Patent Office
Prior art keywords
steam
desuperheater
feed water
chambers
chamber
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
Application number
EP84104151A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0123986A1 (de
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/de
Application granted granted Critical
Publication of EP0123986B1 publication Critical patent/EP0123986B1/de
Expired legal-status Critical Current

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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 first part of patent 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 feedwater preheater, part of the superheating heat can be used thermodynamically in a desuperheater if the steam is sufficiently superheated.
  • 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 tapping steam is passed through the superheating degree 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 that 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 made by an allsei. tig closed sheet metal jacket 12 formed, which carries the steam inlet 7 on its top.
  • the supercooling bundle 3 is enclosed on all sides by a supercooling jacket 8. This is divided into individual chambers by means of baffles 9, 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.
  • the solution according to the invention is now shown as it presents itself with 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.
  • baffles 14 adjoin the outlet openings. These baffles 14, which are supported in a suitable manner in the steam space, introduce the steam axially into the condensation zone.
  • 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.
  • lateral steam outlet openings 13 which in the example shown extend almost over the entire length of the chamber.
  • 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 Speisewasservorwärmer Expired EP0123986B1 (de)

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=4230759

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84104151A Expired EP0123986B1 (de) 1983-04-29 1984-04-12 Speisewasservorwärmer

Country Status (11)

Country Link
US (1) US4541366A (da)
EP (1) EP0123986B1 (da)
AU (1) AU560111B2 (da)
CA (1) CA1255169A (da)
DE (1) DE3461332D1 (da)
DK (1) DK159024C (da)
ES (1) ES532002A0 (da)
HU (1) HU191759B (da)
PL (1) PL143578B1 (da)
RO (1) RO89632A (da)
ZA (1) ZA843150B (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2674816C1 (ru) * 2018-01-30 2018-12-13 Открытое акционерное общество "Таганрогский котлостроительный завод "Красный котельщик" (ОАО ТКЗ "Красный котельщик") Горизонтальный парожидкостный теплообменник

Families Citing this family (12)

* 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
CH679280A5 (da) * 1989-10-31 1992-01-31 Asea Brown Boveri
US5377489A (en) * 1991-05-09 1995-01-03 Westinghouse Electric Corporation Internal moisture separation cycle for a low pressure turbine
DE19511264C2 (de) * 1995-03-27 1998-06-10 Siemens Ag Wärmetauscher
RU2177111C1 (ru) * 2000-08-21 2001-12-20 Акционерное общество открытого типа "Научно-производственное объединение по исследованию и проектированию энергетического оборудования им. И.И. Ползунова" Пароводяной подогреватель
RU2296914C1 (ru) * 2005-08-23 2007-04-10 Открытое акционерное общество "Научно-производственное объединение по исследованию и проектированию энергетического оборудования им. И.И. Ползунова" (ОАО "НПО ЦКТИ") Горизонтальный подогреватель
RU2305227C1 (ru) * 2005-11-24 2007-08-27 Открытое акционерное общество "Научно-производственное объединение по исследованию и проектированию энергетического оборудования им. И.И. Ползунова" (ОАО "НПО ЦКТИ") Пароводяной теплообменник
RU2341726C1 (ru) * 2007-03-30 2008-12-20 Открытое акционерное общество "Всероссийский научно-исследовательский и проектно-конструкторский институт атомного энергетического машиностроения" (ОАО "ВНИИАМ") Ширмовый пароводяной подогреватель
RU2425281C1 (ru) * 2010-02-15 2011-07-27 Открытое акционерное общество "Научно-производственное объединение по исследованию и проектированию энергетического оборудования им. И.И. Ползунова" (ОАО "НПО ЦКТИ") Вертикальный пароводяной теплообменник
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
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

Family Cites Families (8)

* 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
GB1158322A (en) * 1965-10-07 1969-07-16 G & J Weir Ltd Improvements in or relating to Heat Exchangers.
JPS5231843Y2 (da) * 1971-04-05 1977-07-20
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.
CH639745A5 (de) * 1978-08-18 1983-11-30 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
ATE13463T1 (de) * 1982-06-30 1985-06-15 Bbc Brown Boveri & Cie Stehender hochdruckspeisewasservorwaermer in sammlerbauweise mit erhitzer und einer einrichtung zum trennen von dampf- und wasserphase.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2674816C1 (ru) * 2018-01-30 2018-12-13 Открытое акционерное общество "Таганрогский котлостроительный завод "Красный котельщик" (ОАО ТКЗ "Красный котельщик") Горизонтальный парожидкостный теплообменник

Also Published As

Publication number Publication date
DK209584A (da) 1984-10-30
DK159024C (da) 1991-01-28
PL143578B1 (en) 1988-02-29
DE3461332D1 (en) 1987-01-02
DK159024B (da) 1990-08-20
CA1255169A (en) 1989-06-06
ZA843150B (en) 1984-12-24
RO89632A (ro) 1986-06-30
HUT38141A (en) 1986-04-28
DK209584D0 (da) 1984-04-26
EP0123986A1 (de) 1984-11-07
US4541366A (en) 1985-09-17
ES8503817A1 (es) 1985-03-01
PL247444A1 (en) 1985-01-02
AU2729684A (en) 1984-11-01
AU560111B2 (en) 1987-03-26
HU191759B (en) 1987-04-28
ES532002A0 (es) 1985-03-01

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