EP0787272B1 - Revetement de surface de refroidissement - Google Patents

Revetement de surface de refroidissement Download PDF

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Publication number
EP0787272B1
EP0787272B1 EP95944757A EP95944757A EP0787272B1 EP 0787272 B1 EP0787272 B1 EP 0787272B1 EP 95944757 A EP95944757 A EP 95944757A EP 95944757 A EP95944757 A EP 95944757A EP 0787272 B1 EP0787272 B1 EP 0787272B1
Authority
EP
European Patent Office
Prior art keywords
funnel
wall
sloping
walls
vertical
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
EP95944757A
Other languages
German (de)
English (en)
Other versions
EP0787272A1 (fr
Inventor
Bernd BRÄNDLE
Paul Gilli
Werner HÖLBLINGER
Emmerich Seidelberger
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.)
Austrian Energy and Environment SGP Waagner Biro GmbH
Original Assignee
Austrian Energy and Environment AG and Co KG
Austrian Energy and Environment SGP Waagner Biro GmbH
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 Austrian Energy and Environment AG and Co KG, Austrian Energy and Environment SGP Waagner Biro GmbH filed Critical Austrian Energy and Environment AG and Co KG
Publication of EP0787272A1 publication Critical patent/EP0787272A1/fr
Application granted granted Critical
Publication of EP0787272B1 publication Critical patent/EP0787272B1/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
    • 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
    • F22B37/14—Supply mains, e.g. rising mains, down-comers, in connection with water tubes
    • F22B37/146—Tube arrangements for ash hoppers and grates and for combustion chambers of the cyclone or similar type out of the flues

Definitions

  • the invention relates to a cooling surface lining for polygonal chambers of steam generators with funnel-shaped bottom and with firing according to the principle of circulating Fluidized bed, which at least partially consists of walls stretched between collectors Fin tube walls with essentially vertical tubes, which in the Bottom area are converged bent to form a funnel, is formed.
  • the invention has set itself the task, also external to the combustion chamber and in part Integrate small-area components in the cooling system and through special training the components and / or the lining pipes one on the circulation of the steam generator provide connected fin tube wall.
  • the invention is characterized in that two opposite fin tube walls in the funnel area - viewed from top to bottom - first one in its entire width funnel wall inclined to the vertical and then at least one vertical Funnel wall with decreasing width and partly inclined collectors form, and that the adjacent pipe wall and its opposite pipe wall in Funnel area - viewed from top to bottom - first with decreasing width and inclined collectors a vertical funnel wall and then with constant reduced width a side wall of the Form funnels.
  • the main advantages of the invention are that despite the difficult Pipe arrangement more heat exchange surfaces can be accommodated in the given space can and that the thermal stresses when starting and stopping despite faster load changes be reduced in size because all wall parts are cooled evenly, which makes the Thermal elasticity increases.
  • the new funnel construction is also advantageous for Combustion chamber funnel suitable.
  • 1 and 2 show in oblique plan two design variations of a funnel-shaped Bottom of a steam generator, which is entirely lined with fin tube heating surfaces are.
  • Fig.1 shows a combustion chamber without and Fig. 2 with bilaterally heated partition in Cut.
  • a funnel-shaped combustion chamber floor is shown, which through an intermediate wall is divided into two outlets.
  • the fin tube wall 1 is in its entirety Width angled obliquely and forms the funnel wall 1 '.
  • This funnel wall 1 ' is Finally angled again towards the vertical, being down rejuvenated. This happens because the pipes that are no longer used to the outside be performed and in a collector 2, possibly under slanted connecting pieces be involved.
  • the remaining tube wall 1 "may be continued and forms a wall of the channel 9 through which the solids are discharged.
  • two inner funnel walls 8 are provided, which are also used for cooling the funnel wall 1 "are connected in that the shorter tubes of the funnel wall 1" after a 90 ° curvature can be introduced into the funnel wall 8 and the lining represent. In this case, too, the funnel wall 8 can enter the wall of the channel 9 be transferred. With this construction, it is essential that the longer tubes of the Funnel wall 1 "in the area of the funnel wall 8 a collector 2 ', which is about half shorter than collector 2.
  • This measure of special funnel formation can be done in a relatively simple manner also carry out the lining of complicated fin tube wall constructions, such as in fluidized bed combustion plants with a circulating fluidized bed especially in the area of the return of the swirl material to the combustion chamber and fully line the inside surfaces with cooling surfaces. If those Heating surfaces are relatively weakly heated so they can be at least partially in the Integrate the downpipe system of the steam generator, whereby the pipes, which are connected to the collecting chambers 2 and thus arranged at the lowest are used. It is quite possible that part of the fin tube wall 1 in the riser pipe system, while another part is arranged in the down pipe system.
  • Fig. 1 differs from Fig. 2 not only by a changed view, but also by introducing an intermediate wall 6, so that of the tube walls enclosed space is divided.
  • a part of the pipes namely the longer pipes of the partition, is the lower part of the funnel is inserted, while the shorter tubes are in a collector 4 'open at the bottom of the funnel wall 1'.
  • the longer pipes are in the partition 6 compressed and integrated into the funnel walls 8 after spreading in such a way that the individual pipes arranged in the intermediate wall 6 are compressed can be alternately transferred into one of the two inclined funnel walls 8.
  • the tubes of the funnel wall 8 are laid more easily compared to FIG. 1 and those in FIG. 1 referred to as shorter collectors 2 'collectors are substantially the same size as that Collector 2 and take up a large part of the tubes of the funnel wall 1 ".
  • the lining the walls of the adjoining channel 9 can be made similarly as in FIG. 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Claims (7)

  1. Revêtement de surface de refroidissement, pour des chambres polygonales de générateurs de vapeur, avec des fonds en forme de trémie et avec des foyers réalisés selon le principe du lit fluidisé à circulation, revêtement constitué au moins partiellement avec des parois tubulaires en ratelier, configurées en formant une paroi entre des collecteurs, les parois étant constituées de tubes s'étendant sensiblement verticalement, coudés en allant en convergeant, dans la zone de fond, pour former un entonnoir ou trémie, caractérisé en ce que deux parois tubulaires en ratelier (1) opposées, dans le fond de la trémie - si l'on observe du haut vers le bas - constituent d'abord, sur toute leur largeur, une paroi de trémie (1') inclinée par rapport à la verticale, puis au moins une paroi de trémie (1") verticale, ayant une largeur allant en diminuant, et des collecteurs (2) placés partiellement obliquement, et en ce que la paroi tubulaire (3) limitrophe et sa paroi tubulaire (3') opposée constituent dans la zone de trémie - en observant du haut vers le bas - d'abord avec une largeur allant en diminuant et des collecteurs (4) placés obliquement une paroi de trémie verticale et, ensuite, avec une largeur allant en diminuant de façon constante, une paroi latérale (3"), inclinée par rapport à la verticale, de la trémie.
  2. Revêtement de surface de refroidissement selon la revendication 1, caractérisé en ce les collecteurs (2, 4) orientés obliquement sont reliés à la paroi tubulaire (1, 3) au moyen de tubulures (5) disposées obliquement par rapport à l'axe du collecteur.
  3. Revêtement de surface de refroidissement selon la revendication 1, caractérisé en ce que les collecteurs (2, 4) orientés obliquement de parois limitrophes sont disposés à des niveaux en hauteur différents.
  4. Revêtement de surface de refroidissement selon la revendication 3, caractérisé en ce que le collecteur oblique (2, 2') disposé plus bas est monté dans le système de tubes de descente du générateur de vapeur, de manière que la paroi tubulaire en ratelier (1) soit associée pour une première partie au système de tubes de descente et pour l'autre partie au système de tubes de montée.
  5. Revêtement de surface de refroidissement selon la revendication 1, caractérisé en ce que, en cas de séparation l'un de l'autre de deux espaces de trémie (7, 7') situés à coté l'un de l'autre, au moyen d'une paroi intermédiaire (6) chauffée sur les deux faces, les tubes de la paroi intermédiaire (6) sont alternativement prolongés chaque fois en une paroi de trémie (8) oblique (Fig. 2).
  6. Revêtement de surface de refroidissement selon la revendication 1, caractérisé en ce que, en cas de revêtement de deux espaces de trémie situés l'un à coté de l'autre, sans paroi intermédiaire, les tubes des parois de trémie (8) se coupant obliquement sont guidés dans la paroi de trémie (1") verticale voisine et seule la partie plus longue des tubes verticaux des parois de trémies (8) obliques se coupant est introduite dans les collecteurs (2') placés obliquement (Fig. 1).
  7. Agencement de surface de refroidissement selon la revendication 1, caractérisé en ce que les parois tubulaires (1, 3, 3') présentent dans leur étendue longitudinale verticale, en partant de la première inflexion, une longueur différente, puis présentent alternativement des inflexions tracées suivant un angle obtus dans la pente respectivement la verticale, les tubes qui ne sont plus nécessaires dans la section de paroi connexe étant introduits au moins en partie dans des collecteurs (2 respectivement 4) placés obliquement.
EP95944757A 1994-10-17 1995-10-16 Revetement de surface de refroidissement Expired - Lifetime EP0787272B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT1952/94 1994-10-17
AT0195294A AT401287B (de) 1994-10-17 1994-10-17 Kühlflächenauskleidung
PCT/AT1995/000203 WO1996012140A1 (fr) 1994-10-17 1995-10-16 Revetement de surface de refroidissement

Publications (2)

Publication Number Publication Date
EP0787272A1 EP0787272A1 (fr) 1997-08-06
EP0787272B1 true EP0787272B1 (fr) 1999-02-17

Family

ID=3524595

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95944757A Expired - Lifetime EP0787272B1 (fr) 1994-10-17 1995-10-16 Revetement de surface de refroidissement

Country Status (11)

Country Link
US (1) US5775265A (fr)
EP (1) EP0787272B1 (fr)
AT (1) AT401287B (fr)
AU (1) AU3693695A (fr)
CZ (1) CZ283415B6 (fr)
DE (1) DE59505128D1 (fr)
FI (1) FI971577A (fr)
GR (1) GR3029828T3 (fr)
PL (1) PL319734A1 (fr)
SK (1) SK282951B6 (fr)
WO (1) WO1996012140A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1299709B1 (it) * 1998-03-04 2000-04-04 Garbuto Spa Essiccatore a letto fluido, particolarmente per l'essiccazione del tabacco.
DE10354136B4 (de) * 2002-11-22 2014-04-03 Alstom Technology Ltd. Zirkulierender Wirbelschichtreaktor
US6793013B2 (en) 2003-01-09 2004-09-21 Foster Wheeler Energy Corporation Polygonal heat exchange chamber including a tapered portion lined with water tube panels and method of lining a tapered portion of a polygonal heat exchange chamber with such panels
FI124376B (fi) * 2010-01-15 2014-07-31 Foster Wheeler Energia Oy Höyrykattila
CN104344401B (zh) 2013-08-09 2016-09-14 中国科学院工程热物理研究所 带变截面水冷柱的循环流化床锅炉炉膛
CN104728856B (zh) * 2013-12-20 2017-03-01 中国科学院工程热物理研究所 梳齿型水冷柱及具有该水冷柱的炉膛

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2723650A (en) * 1950-11-10 1955-11-15 Babcock & Wilcox Co Vapor generator
US2896591A (en) * 1957-07-15 1959-07-28 Combustion Eng Furnace wall for forced once-through boiler
US3265039A (en) * 1964-09-29 1966-08-09 Combustion Eng Burning chamber cells formed by horizontal partition-forming tubes
FR1416901A (fr) * 1964-12-07 1965-11-05 Combustion Eng Trémie de générateur de vapeur
US3498270A (en) * 1968-05-01 1970-03-03 Foster Wheeler Corp All-welded furnace construction
US4301771A (en) * 1980-07-02 1981-11-24 Dorr-Oliver Incorporated Fluidized bed heat exchanger with water cooled air distributor and dust hopper
EP0135664B1 (fr) * 1983-08-31 1988-07-27 GebràœDer Sulzer Aktiengesellschaft Passage de gaz vertical pour un échangeur de chaleur
EP0137119B1 (fr) * 1983-09-08 1988-08-24 GebràœDer Sulzer Aktiengesellschaft Générateur de vapeur
SE452360B (sv) * 1986-02-05 1987-11-23 Goetaverken Energy Syst Ab Anordning vid en reaktorkammare for en cirkulerande, fluidiserad bedd
FI89535C (fi) * 1991-04-11 1997-07-22 Tampella Power Oy Foerbraenningsanlaeggning
FI93701C (fi) * 1993-06-11 1995-05-26 Ahlstroem Oy Menetelmä ja laite kuumien kaasujen käsittelemiseksi

Also Published As

Publication number Publication date
PL319734A1 (en) 1997-08-18
AT401287B (de) 1996-07-25
CZ283415B6 (cs) 1998-04-15
ATA195294A (de) 1995-12-15
GR3029828T3 (en) 1999-06-30
SK282951B6 (sk) 2003-01-09
SK47597A3 (en) 1998-06-03
FI971577A0 (fi) 1997-04-15
AU3693695A (en) 1996-05-06
EP0787272A1 (fr) 1997-08-06
CZ109597A3 (en) 1997-09-17
FI971577A (fi) 1997-04-15
WO1996012140A1 (fr) 1996-04-25
US5775265A (en) 1998-07-07
DE59505128D1 (de) 1999-03-25

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