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EP0349834A1 - Chaudière à vapeur à passage unique - Google Patents

Chaudière à vapeur à passage unique Download PDF

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Publication number
EP0349834A1
EP0349834A1 EP89111309A EP89111309A EP0349834A1 EP 0349834 A1 EP0349834 A1 EP 0349834A1 EP 89111309 A EP89111309 A EP 89111309A EP 89111309 A EP89111309 A EP 89111309A EP 0349834 A1 EP0349834 A1 EP 0349834A1
Authority
EP
European Patent Office
Prior art keywords
throttle cable
steam generator
height
gas
cable
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
EP89111309A
Other languages
German (de)
English (en)
Other versions
EP0349834B1 (fr
Inventor
Eberhard Dipl.-Ing. Wittchow
Wolfgang Dr. Köhler
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25869735&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0349834(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP0349834A1 publication Critical patent/EP0349834A1/fr
Application granted granted Critical
Publication of EP0349834B1 publication Critical patent/EP0349834B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B29/00—Steam boilers of forced-flow type
    • F22B29/06—Steam boilers of forced-flow type of once-through type, i.e. built-up from tubes receiving water at one end and delivering superheated steam at the other end of the tubes
    • F22B29/061—Construction of tube walls
    • F22B29/065—Construction of tube walls involving upper vertically disposed water tubes and lower horizontally- or helically disposed water tubes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S122/00—Liquid heaters and vaporizers
    • Y10S122/04—Once through boilers

Definitions

  • the invention relates to a once-through steam generator according to the preamble of patent claim 1.
  • the transition from the pipes of the pipe walls of the lower part of the throttle cable into the pipes of the pipe walls of the upper part can either be done directly, for example by connecting three pipes of the upper part to a pipe of the lower part, or indirectly via a collector, to which both the pipes of the lower and the pipes of the upper part are connected.
  • the tubes of the lower part of the gas flue which are strongly heated by the burners of the once-through steam generator, can have very considerable temperature differences at their outlet points to the tubes of the upper part or to the collector due to inevitable heating differences. Since the pipes of the pipe walls are welded together gas-tight on their long sides, these temperature differences lead to considerable thermal stresses in the pipe walls of the gas train, which can lead to pipe breaks.
  • the invention has for its object to remedy this situation and to avoid such pipe tears due to excessive thermal stresses.
  • the diagonally rising pipes of the pipe walls of the lower part of the throttle cable can only absorb small weights. Therefore, vertical support strips made of iron are to be provided for such pipe walls on the outside, to which the individual pipes of the pipe walls of the lower part of the throttle cable are welded.
  • the length and the cross-section of these support bands as well as the number of welding points can be limited. This also limits the manufacturing and assembly costs and thus costs for the once-through steam generator.
  • Claims 2 to 5 are directed to advantageous developments of the subject matter of claim 1, through which thermal stresses and thus pipe tears in the pipe walls of the throttle cable can be avoided even better.
  • the subject of claim 6 causes a low wall temperature of the tubes of the tube walls of the upper part of the gas train of the once-through steam generator. Therefore, these tube walls are also adapted to the high heat radiation to which they are exposed due to the limited height of the lower part of the throttle cable.
  • the continuous steam generators according to FIGS. 1 to 3 have two vertical throttle cables 2 and 3, which are connected to one another at the top by a horizontal gas cable 4.
  • the continuous steam generator according to FIG. 4 has only a single vertical throttle cable 2.
  • the vertical throttle cables 2 have a funnel-shaped base 5 at the bottom, as is customary for coal-fired steam generators.
  • the bottom 5 can, however, also be designed in the same way as is customary for gas or oil-fired steam generators.
  • the vertical gas flues 3 according to FIGS. 1 to 3 have a flue gas outlet opening 6 on the bottom. This flue gas outlet opening 6 is located at the top of the single vertical gas flue 2 in the continuous steam generator according to FIG. 4.
  • the vertical throttle cable 2 has a lower part 7, the lower end of which is delimited by the base 5 and which has a height H in the vertical direction.
  • such heating surfaces 9 are not only arranged within the vertical gas train 3 but also within the horizontal gas train 4.
  • 3 has such heating surfaces 9 not only in the vertical throttle cable 3 and in the horizontal gas cable 4, but also in the vertical gas cable 2, while the continuous steam generator according to FIG. 4 has such heating surfaces 9 only in the vertical gas cable 2.
  • the vertical throttle cable 2 also has an upper part 10, which in the continuous steam generator according to FIG. 1 at its upper end through the upper transverse wall 11 of the accelerator cable 2, in the continuous steam generator according to FIG. 2 through a cross-sectional constriction 12 which protrudes into the throttle cable 2 by a nose 13 a side wall of the throttle cable 2 is formed, and in the passage steam generators according to Figures 3 and 4 is limited by a lower edge 14 of the heating surfaces 9.
  • the vertical throttle cable 2 is formed by gas-tight tube walls, the tubes 15 of which are arranged at an incline. However, these tubes 15 can also be arranged alternately at an incline and horizontally.
  • the vertical throttle cable 2 is formed by gas-tight tube walls, the tubes 16 of which are arranged vertically. For example, three vertical pipes 16 of the pipe walls of the upper part 10 of the gas train 2 are connected to an obliquely rising pipe 15 of the pipe walls of the lower part 7 of the throttle cable 2.
  • the lower part 7 and the upper part 10 of the throttle cable 2 have a total height L.
  • the height H of this lower part 7 is advantageously 70% of the total height L of the parts 7 and 10 of this gas cable 2.
  • the height H can also advantageously be 65, 60, 55 or even be only 50% of the total height L. The smaller this percentage, the lower the thermal stresses in the tube walls of the lower part 7 of the throttle cable 2.
  • the percentage of the height H of the lower part 7 of the gas cable 2 is downwardly limited primarily by the burner arrangement, since in the area of the burner Tubes 15 are heated very strongly and the oblique arrangement of the tubes 15 allow particularly good cooling.
  • the tubes 16 of the tube walls of the upper part 10 of the throttle cable 2 advantageously have helical inner ribs 17. From the tubes 15 of the tube walls of the lower part 7 of the gas cable 2 into the tubes 16 according to FIGS. 5 and 6 flowing wet steam is subjected to a centrifugal force in these tubes 16, so that its water content predominantly collects on the inside of the tubes 16. This proportion of water increases the cooling of the tubes 16 there, so that these tubes 16 can easily absorb the high heat radiation from the interior of the throttle cable 2, which they are subject to because of the low height H of the lower part 7 of this gas cable 2.
  • a feed water preheater heating surface 22 is connected to a feed water pump 21.
  • An evaporator surface 23 is connected in series with the feed water preheater heating surface 22 and is connected laterally with its steam outlet line to a mostly vertically arranged water separator bottle 24.
  • a steam outlet line leads from the upper end of this water separating bottle 24 to the superheater heating surfaces 25.
  • the water separating bottle 24 is provided with a water discharge line 26 which leads to a feed water or a relaxation tank or is provided with a circulation pump which is located between the feed water preheater heating surface 22 and the evaporator surface 23 or between the feed water pump 21 and the feed water preheater heating surface.
  • the tube walls of both parts 7 and 10 of the throttle cable 2 belong to the evaporator surface 23 in FIG. 7, while the heating surfaces 9, the feed water preheater heating surface 22 and the superheater heating surfaces 25 in FIG. 7 are.
  • the evaporation area is not fixed locally, so that either overheating already occurs in the evaporator surfaces 23 of the tube walls of the gas flue 2, or evaporation still takes place in the superheater heating surfaces 25.
  • the water discharge line 26 in FIG. 7 is only flowed through by water during the start-up of the once-through steam generator and during operation with partial load.
  • the water discharge line 26 is therefore not connected to a horizontally arranged steam drum, water does not flow through it during the entire operation, and it does not open directly into the evaporator surface without the interposition of containers or pumps.

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)
EP89111309A 1988-07-04 1989-06-21 Chaudière à vapeur à passage unique Expired - Lifetime EP0349834B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3822606 1988-07-04
DE3822606 1988-07-04
IN478CA1989 IN172355B (fr) 1988-07-04 1989-06-22

Publications (2)

Publication Number Publication Date
EP0349834A1 true EP0349834A1 (fr) 1990-01-10
EP0349834B1 EP0349834B1 (fr) 1996-04-17

Family

ID=25869735

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89111309A Expired - Lifetime EP0349834B1 (fr) 1988-07-04 1989-06-21 Chaudière à vapeur à passage unique

Country Status (5)

Country Link
US (1) US4987862A (fr)
EP (1) EP0349834B1 (fr)
JP (1) JP3014699B2 (fr)
GR (1) GR3019861T3 (fr)
IN (1) IN172355B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994010501A1 (fr) * 1992-11-02 1994-05-11 Siemens Aktiengesellschaft Generateur de vapeur
DE19510033A1 (de) * 1994-05-25 1995-11-30 Babcock & Wilcox Co Verwendung einer eingängigen und mehrgängigen gerippten Verrohrung für Gleitdruck-Zwangsdurchlaufkessel
WO1997024555A3 (fr) * 1996-01-02 1997-08-21 Siemens Ag Evaporateur en continu a tubes evaporateurs en spirale
DE102005023082A1 (de) * 2005-05-13 2006-11-16 Alstom Technology Ltd. Durchlaufdampferzeuger

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
UA27775C2 (uk) * 1991-04-18 2000-10-16 Сіменс Аг Проточний парогенератор з вертикальним, утвореним із герметично зварених одна з одною труб газоходом
DE4206657C2 (de) * 1992-03-03 1997-01-09 Siemens Ag Anordnung eines Dampferzeugers in einer Tragkonstruktion
DE4232880A1 (de) * 1992-09-30 1994-03-31 Siemens Ag Dampferzeuger
DE4333404A1 (de) * 1993-09-30 1995-04-06 Siemens Ag Durchlaufdampferzeuger mit vertikal angeordneten Verdampferrohren
US5901669A (en) * 1995-04-05 1999-05-11 The Babcock & Wilcox Company Variable pressure once-through steam generator upper furnace having non-split flow circuitry
US5755188A (en) * 1995-05-04 1998-05-26 The Babcock & Wilcox Company Variable pressure once-through steam generator furnace having all welded spiral to vertical tube transition with non-split flow circuitry
DE19602680C2 (de) * 1996-01-25 1998-04-02 Siemens Ag Durchlaufdampferzeuger
DE19645748C1 (de) * 1996-11-06 1998-03-12 Siemens Ag Verfahren zum Betreiben eines Durchlaufdampferzeugers und Durchlaufdampferzeuger zur Durchführung des Verfahrens
CA2334699C (fr) * 1998-06-10 2008-11-18 Siemens Aktiengesellschaft Generateur de vapeur alimente par un combustible fossile
DE19858780C2 (de) * 1998-12-18 2001-07-05 Siemens Ag Fossilbeheizter Durchlaufdampferzeuger
US6213059B1 (en) * 1999-01-13 2001-04-10 Abb Combustion Engineering Inc. Technique for cooling furnace walls in a multi-component working fluid power generation system
DE19914760C1 (de) * 1999-03-31 2000-04-13 Siemens Ag Fossilbeheizter Durchlaufdampferzeuger
CA2501086A1 (fr) * 2002-10-04 2004-04-22 Nooter/Eriksen, Inc. Evaporateur a passage unique pour generateur de vapeur
US6718915B1 (en) * 2002-12-16 2004-04-13 The Babcock & Wilcox Company Horizontal spiral tube boiler convection pass enclosure design
EP1533565A1 (fr) * 2003-11-19 2005-05-25 Siemens Aktiengesellschaft Générateur de vapeur à passage unique
DE102006005208A1 (de) * 2006-02-02 2007-08-16 Hitachi Power Europe Gmbh Hängender Dampferzeuger
EP2194320A1 (fr) * 2008-06-12 2010-06-09 Siemens Aktiengesellschaft Procédé de fonctionnement d'un générateur de vapeur à passage unique et générateur de vapeur à passage unique
DE102009012321A1 (de) * 2009-03-09 2010-09-16 Siemens Aktiengesellschaft Durchlaufverdampfer
DE102009024587A1 (de) * 2009-06-10 2010-12-16 Siemens Aktiengesellschaft Durchlaufverdampfer
US8240370B2 (en) 2009-12-18 2012-08-14 Air Products And Chemicals, Inc. Integrated hydrogen production and hydrocarbon extraction
US9541280B2 (en) 2014-06-04 2017-01-10 Fives North American Combustion, Inc. Ultra low NOx combustion for steam generator
US10634341B2 (en) * 2016-08-23 2020-04-28 General Electric Technology Gmbh Overfire air system for low nitrogen oxide tangentially fired boiler

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1240883B (de) * 1964-02-27 1967-05-24 Ver Kesselwerke Ag Zwangdurchlaufkessel mit oben am Kesselgeruest aufgehaengtem Kesselkoerper
GB1163301A (en) * 1965-08-27 1969-09-04 Babcock & Wilcox Ltd Improvements in or relating to Supporting Tubular Walls of a Vapour Generator
FR2149892A5 (fr) * 1971-08-05 1973-03-30 Babcock Atlantique Sa
DE2621189A1 (de) * 1976-05-13 1977-11-17 Balcke Duerr Ag Vorrichtung zur aufhaengung einer rohrwand
GB2007340A (en) * 1977-11-07 1979-05-16 Foster Wheeler Energy Corp Vapour generating system utilizing intergral separators and angulary arranged furnace boundary wall fluid flow tubeshaving rifled bores
DE2941623A1 (de) * 1979-10-13 1981-04-23 Deutsche Babcock Ag, 4200 Oberhausen Vorrichtung zur aufhaengung einer rohrwand
DE3544504A1 (de) * 1984-12-27 1986-08-07 Mustafa Dr.-Ing. Zürich Youssef Brennkammer-rohranordnung in zwangdurchlauf-dampferzeugern

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3202138A (en) * 1961-07-27 1965-08-24 Combustion Eng Vapor temperature control method
NL130376C (fr) * 1963-03-25
US4344388A (en) * 1977-11-07 1982-08-17 Foster Wheeler Energy Corporation Vapor generating system utilizing integral separators and angularly arranged furnace boundary wall fluid flow tubes having rifled bores
EP0075041B1 (fr) * 1981-09-15 1986-03-05 GebràœDer Sulzer Aktiengesellschaft Générateur de vapeur avec une paroi tubulaire de surchauffe
DE3525676A1 (de) * 1985-07-18 1987-01-22 Kraftwerk Union Ag Dampferzeuger

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1240883B (de) * 1964-02-27 1967-05-24 Ver Kesselwerke Ag Zwangdurchlaufkessel mit oben am Kesselgeruest aufgehaengtem Kesselkoerper
GB1163301A (en) * 1965-08-27 1969-09-04 Babcock & Wilcox Ltd Improvements in or relating to Supporting Tubular Walls of a Vapour Generator
FR2149892A5 (fr) * 1971-08-05 1973-03-30 Babcock Atlantique Sa
DE2621189A1 (de) * 1976-05-13 1977-11-17 Balcke Duerr Ag Vorrichtung zur aufhaengung einer rohrwand
GB2007340A (en) * 1977-11-07 1979-05-16 Foster Wheeler Energy Corp Vapour generating system utilizing intergral separators and angulary arranged furnace boundary wall fluid flow tubeshaving rifled bores
DE2941623A1 (de) * 1979-10-13 1981-04-23 Deutsche Babcock Ag, 4200 Oberhausen Vorrichtung zur aufhaengung einer rohrwand
DE3544504A1 (de) * 1984-12-27 1986-08-07 Mustafa Dr.-Ing. Zürich Youssef Brennkammer-rohranordnung in zwangdurchlauf-dampferzeugern

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994010501A1 (fr) * 1992-11-02 1994-05-11 Siemens Aktiengesellschaft Generateur de vapeur
DE19510033A1 (de) * 1994-05-25 1995-11-30 Babcock & Wilcox Co Verwendung einer eingängigen und mehrgängigen gerippten Verrohrung für Gleitdruck-Zwangsdurchlaufkessel
DE19510033C2 (de) * 1994-05-25 1999-10-14 Babcock & Wilcox Co Zwangsdurchlauf-Dampferzeuger, insbesondere für einen Gleitdruckbetrieb
WO1997024555A3 (fr) * 1996-01-02 1997-08-21 Siemens Ag Evaporateur en continu a tubes evaporateurs en spirale
RU2164322C2 (ru) * 1996-01-02 2001-03-20 Сименс Акциенгезелльшафт Прямоточный парогенератор со спирально расположенными испарительными трубами
DE102005023082A1 (de) * 2005-05-13 2006-11-16 Alstom Technology Ltd. Durchlaufdampferzeuger
CN100491820C (zh) * 2005-05-13 2009-05-27 阿尔斯通技术有限公司 直通式蒸汽发生器
DE102005023082B4 (de) * 2005-05-13 2014-05-28 Alstom Technology Ltd. Durchlaufdampferzeuger

Also Published As

Publication number Publication date
EP0349834B1 (fr) 1996-04-17
IN172355B (fr) 1993-06-26
US4987862A (en) 1991-01-29
JP3014699B2 (ja) 2000-02-28
JPH0271001A (ja) 1990-03-09
GR3019861T3 (en) 1996-08-31

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