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EP0075041A1 - Générateur de vapeur avec une paroi tubulaire de surchauffe - Google Patents

Générateur de vapeur avec une paroi tubulaire de surchauffe Download PDF

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Publication number
EP0075041A1
EP0075041A1 EP81108053A EP81108053A EP0075041A1 EP 0075041 A1 EP0075041 A1 EP 0075041A1 EP 81108053 A EP81108053 A EP 81108053A EP 81108053 A EP81108053 A EP 81108053A EP 0075041 A1 EP0075041 A1 EP 0075041A1
Authority
EP
European Patent Office
Prior art keywords
superheater
tubes
tube wall
evaporator
steam generator
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
EP81108053A
Other languages
German (de)
English (en)
Other versions
EP0075041B1 (fr
Inventor
Karl Rees
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.)
Sulzer AG
Original Assignee
Sulzer AG
Gebrueder Sulzer AG
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 Sulzer AG, Gebrueder Sulzer AG filed Critical Sulzer AG
Publication of EP0075041A1 publication Critical patent/EP0075041A1/fr
Application granted granted Critical
Publication of EP0075041B1 publication Critical patent/EP0075041B1/fr
Expired 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
    • F22B37/12—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 number of superheater tubes can be reduced and the weight of the pressure-carrying parts can be reduced.
  • the retaining elements according to claim 4 prevent the superheater tubes from bending out of the plane of the superheater tube wall in a structurally simple manner.
  • the features of claim 5 ensure a free thermal expansion possibility for the superheater tubes.
  • the solution according to claim 6 allows to significantly reduce the number of penetration points.
  • the embodiment according to claim 9 allows to do without sliding seals.
  • 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 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.
  • flue gas side superheater tube walls superiors 18 supports' are also superheater tube walls.
  • FIGS. 2 to 7 show details of the pipe arrangement in the area of the flue gas duct 3.
  • the parallel evaporator pipes 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.
  • Wide 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.
  • tube bends 30, which are connected to fork pieces 31, pierce the evaporator tube wall / vertical fin tubes 32 are welded onto the fork pieces 31, which form the superheater tube wall 18.
  • 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. For this purpose, as shown in FIGS. 4 and 5, 32 hooks 35 are welded to the rear of the fin tubes, which are each suspended in a slot 36 in the webs 28. For sealing purposes, 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.
  • FIGS. 6 and 7 show, in the area of the upper end of the superheater tube wall two adjacent fin tubes 32 each open into a fork piece 42, to which a tube elbow 43 connects.
  • This elbow 43 penetrates with its horizontal leg 44 an elongated hole 46 provided on the web 28.
  • an inner cover tongue 48 and an outer cover tongue 49 are welded to the leg 44 on both sides of the web 28 such that this follows different thermal expansion of the fin tubes 32 and the evaporator tubes 27 , can move in slot 46 and the tongues always cover the slot.
  • cover tabs 48 and 49 do not provide complete sealing. 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.
  • the embodiment according to FIGS. 2 to 7 has the disadvantage that if the steam flow is distributed unevenly over two fin tubes 32 connected to one another by a fork piece 31, the steam flows flowing therein can heat up unevenly, which can lead to thermal stresses when firmly connected by fork pieces 42.
  • This disadvantage is avoided in the case of a solution according to FIG. 8, in which the tubes of a pair each starting from a fork piece 31 separately through elongated holes 46 arranged one below the other through the evaporator tube wall.
  • the elongated holes 46 are also covered here with cover tongues 48 and 49.
  • the sliding seals according to FIGS. 6, 7 and 8 can be avoided by the embodiment according to FIG. 9.
  • the fin tubes 32 are bent obliquely in the region of their upper end, forming expansion legs 60, and then with an arc 61 passed through bores in the webs 28 of the evaporator tube wall.
  • adjacent expansion legs 60 can each be in the same. Sloping plane perpendicular to the evaporator tube wall run, as shown in FIG. 9, or also against one another be offset, as Figure 10 shows. The offset allows the inner extension leg to be given a smaller offset.
  • expansion legs As shown in FIG. 11 in contrast to FIG. 9, the other of the two legs forming a pair can be cranked inwards.

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)
EP81108053A 1981-09-15 1981-10-08 Générateur de vapeur avec une paroi tubulaire de surchauffe Expired EP0075041B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5943/81 1981-09-15
CH594381 1981-09-15

Publications (2)

Publication Number Publication Date
EP0075041A1 true EP0075041A1 (fr) 1983-03-30
EP0075041B1 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)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2597576A1 (fr) * 1986-04-22 1987-10-23 Mediterranee Const Navales Ind Perfectionnements apportes a la realisation des parois des chambres, notamment de combustion, des generateurs de vapeur
US6178924B1 (en) 1996-12-19 2001-01-30 Kvaerner Pulping Oy Method for upgrading a boiler
EP1096200A1 (fr) * 1999-10-28 2001-05-02 ALSTOM Energy Systems SA Echangeur mural pour foyer de chaudière

Families Citing this family (15)

* Cited by examiner, † Cited by third party
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 GebràœDer 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
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
US5848492A (en) * 1996-05-03 1998-12-15 Brown; Claude E. Agricultural methods with superheated steam
US5867935A (en) * 1996-05-03 1999-02-09 Brown; Claude E. Superheated steam delivering apparatus and agricultural methods therewith
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1167371A (fr) * 1956-03-02 1958-11-24 Babcock & Wilcox France Générateur de vapeur à rayonnement
FR1212856A (fr) * 1957-09-20 1960-03-28 Babcock & Wilcox Co Perfectionnements aux générateurs de vapeur à circulation forcée
GB873084A (en) * 1956-11-01 1961-07-19 Babcock & Wilcox Ltd Improvements in tubulous vapour generating and vapour heating units
GB1152066A (en) * 1965-12-23 1969-05-14 Combustion Eng Steam Generator

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3263422A (en) * 1965-06-10 1966-08-02 Foster Wheeler Corp Power plant vapor generator
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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
GB1152066A (en) * 1965-12-23 1969-05-14 Combustion Eng Steam Generator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2597576A1 (fr) * 1986-04-22 1987-10-23 Mediterranee Const Navales Ind Perfectionnements apportes a la realisation des parois des chambres, notamment de combustion, des generateurs de vapeur
US6178924B1 (en) 1996-12-19 2001-01-30 Kvaerner Pulping Oy Method for upgrading a boiler
EP1096200A1 (fr) * 1999-10-28 2001-05-02 ALSTOM Energy Systems SA Echangeur mural pour foyer de chaudière
FR2800440A1 (fr) * 1999-10-28 2001-05-04 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

Also Published As

Publication number Publication date
DE3173990D1 (en) 1986-04-10
JPS5869301A (ja) 1983-04-25
FI70315B (fi) 1986-02-28
EP0075041B1 (fr) 1986-03-05
FI822754L (fi) 1983-03-16
CA1186577A (fr) 1985-05-07
FI70315C (fi) 1986-09-15
US4418652A (en) 1983-12-06
FI822754A0 (fi) 1982-08-06

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