EP0075041B1 - Générateur de vapeur avec une paroi tubulaire de surchauffe - Google Patents
Générateur de vapeur avec une paroi tubulaire de surchauffe Download PDFInfo
- Publication number
- EP0075041B1 EP0075041B1 EP81108053A EP81108053A EP0075041B1 EP 0075041 B1 EP0075041 B1 EP 0075041B1 EP 81108053 A EP81108053 A EP 81108053A EP 81108053 A EP81108053 A EP 81108053A EP 0075041 B1 EP0075041 B1 EP 0075041B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tubes
- tube wall
- evaporator
- steam generator
- superheater
- 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
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/10—Water tubes; Accessories therefor
- F22B37/12—Forms of water tubes, e.g. of varying cross-section
- F22B37/125—Bifurcates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G3/00—Steam superheaters characterised by constructional features; Details or component parts thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G7/00—Steam superheaters characterised by location, arrangement, or disposition
- F22G7/14—Steam superheaters characterised by location, arrangement, or disposition in water-tube boilers, e.g. between banks of water tubes
Definitions
- the invention relates to a steam generator with the features of the preamble of claim 1.
- Such a steam generator is known from FR-PS 1 167371.
- the penetration areas of the superheater tubes through the evaporator tube walls and through the ceiling of the flue gas duct form critical points that narrowly limit the practical application of the upstream superheater wall.
- the differences in elongation between the superheater tubes and the evaporator tubes can cause great stresses in the area of the penetrations, which in turn cause sealing problems of the flue gas duct to the outside.
- the invention has for its object to improve a steam generator with the features of the preamble of claim 1 so that in the penetration of the superheater tubes through the evaporator tube walls large differences in thermal expansion in a structurally simple manner and in terms of tightness are easily absorbed.
- this object is achieved by the features of the characterizing part of claim 1.
- a particular advantage of this solution can be seen in the fact that one is no longer limited in the length of the tubes of the superheater tubes.
- GB-PS 873 084 discloses a steam generator with a superheater pipe wall which is hung in front of an evaporator pipe wall and the pipes of which are fastened to the evaporator pipe wall by means of retaining means.
- a steam generator 1 has a combustion chamber 2 with an adjoining flue gas duct 3, at the upper end of which a transverse duct 4 is connected.
- the combustion chamber 2 and the flue gas duct 3 are delimited by four vertical walls 6.
- a funnel 7 is provided, which also consists of four tube walls.
- four burners 8 are arranged, which are supplied with air via channels 9 and with fuel via further lines, not shown.
- the tube walls 6 and the walls of the funnel 7 are formed from gas-tight welded tubes 10, which serve as evaporator heating surfaces.
- touch heating surfaces 12, 13 and 14 are suspended, of which the heating surface 14 can be formed from a plurality of tabular, vertical bulkhead heating surfaces.
- superheater tube walls 18 are arranged in front of them on the flue gas side. These four superheater tube walls 18 consist of a narrow grid of vertical tubes which are connected at the bottom to distributors 20 arranged outside the flue gas duct and at the top to collectors 21 also arranged outside the flue gas duct.
- the parallel evaporator tubes 10 are welded to one another via webs 24 via the height of the combustion chamber 2.
- two adjacent evaporator tubes 10 are joined together via fork pieces 26 to form a new evaporator tube 27.
- Wider webs 28 extend between adjacent evaporator tubes 27, so that the evaporator tubes 10 and 27 form tight, so-called membrane walls together with the webs 24 and 28, respectively.
- pipe bends 30, which are connected to fork pieces 31 penetrate the evaporator tube wall 6.
- Vertical fin tubes 32 which form the superheater tube wall 18, are welded onto the fork pieces 31.
- the fins 33 of adjacent fin tubes 32 are only a short distance a, through which practically no heat radiation falls on the evaporator tube wall located behind them.
- the fin tubes 32 are fastened in several places over their height by retaining elements to the webs 28 of the evaporator tube wall. 4 and 5 for this purpose 32 hooks 35 are welded to the back of the fin tubes, which are each suspended in a slot 36 of the webs 28. For sealing, the slots 36 and the hooks 35 are covered by a box 40 which is tightly welded onto the outside of the evaporator tube wall 6.
- the cover tabs 48 and 49 do not provide a perfect seal. It may therefore be expedient to connect the bellows to the legs 44 on the outside of the evaporator tube wall by means of bellows (not shown) which permit vertical displacements.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Claims (8)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH594381 | 1981-09-15 | ||
| CH5943/81 | 1981-09-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0075041A1 EP0075041A1 (fr) | 1983-03-30 |
| EP0075041B1 true EP0075041B1 (fr) | 1986-03-05 |
Family
ID=4301890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP81108053A Expired EP0075041B1 (fr) | 1981-09-15 | 1981-10-08 | Générateur de vapeur avec une paroi tubulaire de surchauffe |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4418652A (fr) |
| EP (1) | EP0075041B1 (fr) |
| JP (1) | JPS5869301A (fr) |
| CA (1) | CA1186577A (fr) |
| DE (1) | DE3173990D1 (fr) |
| FI (1) | FI70315C (fr) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4704992A (en) * | 1983-06-16 | 1987-11-10 | Combustion Engineering, Inc. | Waterwall support and configuration for a ranch style fluidized bed boiler |
| EP0135668B1 (fr) * | 1983-08-31 | 1988-08-24 | GebràDer Sulzer Aktiengesellschaft | Echangeur de chaleur avec un passage de gaz |
| US4864973A (en) * | 1985-01-04 | 1989-09-12 | The Babcock & Wilcox Company | Spiral to vertical furnace tube transition |
| FR2597576B1 (fr) * | 1986-04-22 | 1989-06-30 | Mediterranee Const Navales Ind | Perfectionnements apportes a la realisation des parois des chambres, notamment de combustion, des generateurs de vapeur |
| EP0349834B1 (fr) * | 1988-07-04 | 1996-04-17 | Siemens Aktiengesellschaft | Chaudière à vapeur à passage unique |
| US5311844A (en) * | 1992-03-27 | 1994-05-17 | Foster Wheeler Energy Corporation | Internested superheater and reheater tube arrangement for heat recovery steam generator |
| US5867935A (en) * | 1996-05-03 | 1999-02-09 | Brown; Claude E. | Superheated steam delivering apparatus and agricultural methods therewith |
| US5848492A (en) * | 1996-05-03 | 1998-12-15 | Brown; Claude E. | Agricultural methods with superheated steam |
| FI970438A0 (fi) | 1996-12-19 | 1997-02-03 | Kvaerner Pulping Oy | Foerfarande i panna, saerskilt i sodapanna |
| FR2800440B1 (fr) * | 1999-10-28 | 2001-11-30 | Alstom Energy Sys Sa | Echangeur mural, pour foyer de chaudiere, constitue de tubes dont l'entree et la sortie sont situees dans la partie basse de l'echangeur |
| EP2180251A1 (fr) * | 2008-09-09 | 2010-04-28 | Siemens Aktiengesellschaft | Générateur de vapeur en continu |
| EP2182278A1 (fr) * | 2008-09-09 | 2010-05-05 | Siemens Aktiengesellschaft | Générateur de vapeur en continu |
| DE102008060918A1 (de) * | 2008-12-06 | 2010-06-10 | Mvv Umwelt Gmbh | Dampferzeuger zur Erzeugung von überhitztem Dampf in einer Abfallverbrennungsanlage |
| CN101749689B (zh) * | 2008-12-10 | 2011-08-31 | 中冶赛迪工程技术股份有限公司 | 一种汽化冷却烟道 |
| DE102011054718B4 (de) * | 2011-10-21 | 2014-02-13 | Hitachi Power Europe Gmbh | Verfahren zur Erzeugung einer Spannungsverminderung in errichteten Rohrwänden eines Dampferzeugers |
| US10234169B2 (en) * | 2016-04-05 | 2019-03-19 | The Babcock & Wilcox Company | Transition casting for boiler with steam cooled upper furnace |
| US10253972B2 (en) * | 2016-04-14 | 2019-04-09 | The Babcock & Wilcox Company | Transition casting for boiler with steam cooled upper furnace |
| CN107975781B (zh) * | 2016-10-25 | 2020-04-24 | 江苏道和环保科技有限公司 | 转炉深度余热回收锅炉 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1167371A (fr) * | 1956-03-02 | 1958-11-24 | Babcock & Wilcox France | Générateur de vapeur à rayonnement |
| GB873084A (en) * | 1956-11-01 | 1961-07-19 | Babcock & Wilcox Ltd | Improvements in tubulous vapour generating and vapour heating units |
| FR1212856A (fr) * | 1957-09-20 | 1960-03-28 | Babcock & Wilcox Co | Perfectionnements aux générateurs de vapeur à circulation forcée |
| US3263422A (en) * | 1965-06-10 | 1966-08-02 | Foster Wheeler Corp | Power plant vapor generator |
| US3312198A (en) * | 1965-12-23 | 1967-04-04 | Combustion Eng | Steam generator having improved steam heating sections arranged for parallel flow |
| US4178881A (en) * | 1977-12-16 | 1979-12-18 | Foster Wheeler Energy Corporation | Vapor generating system utilizing angularly arranged bifurcated furnace boundary wall fluid flow tubes |
| US4245588A (en) * | 1979-01-16 | 1981-01-20 | Foster Wheeler Energy Corporation | Vapor generating system having a division wall penetrating a furnace boundary wall formed in part by angularly extending fluid flow tubes |
| US4244327A (en) * | 1979-06-11 | 1981-01-13 | Combustion Engineering, Inc. | Steam generator arrangement |
-
1981
- 1981-10-08 EP EP81108053A patent/EP0075041B1/fr not_active Expired
- 1981-10-08 DE DE8181108053T patent/DE3173990D1/de not_active Expired
-
1982
- 1982-07-22 CA CA000407834A patent/CA1186577A/fr not_active Expired
- 1982-08-06 FI FI822754A patent/FI70315C/fi not_active IP Right Cessation
- 1982-08-17 US US06/408,926 patent/US4418652A/en not_active Expired - Fee Related
- 1982-08-26 JP JP57146967A patent/JPS5869301A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FI70315C (fi) | 1986-09-15 |
| FI70315B (fi) | 1986-02-28 |
| FI822754L (fi) | 1983-03-16 |
| US4418652A (en) | 1983-12-06 |
| CA1186577A (fr) | 1985-05-07 |
| JPS5869301A (ja) | 1983-04-25 |
| FI822754A0 (fi) | 1982-08-06 |
| DE3173990D1 (en) | 1986-04-10 |
| EP0075041A1 (fr) | 1983-03-30 |
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