EP0217079B1 - Générateur de vapeur avec un foyer à combustible fossile - Google Patents

Générateur de vapeur avec un foyer à combustible fossile Download PDF

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Publication number
EP0217079B1
EP0217079B1 EP86111016A EP86111016A EP0217079B1 EP 0217079 B1 EP0217079 B1 EP 0217079B1 EP 86111016 A EP86111016 A EP 86111016A EP 86111016 A EP86111016 A EP 86111016A EP 0217079 B1 EP0217079 B1 EP 0217079B1
Authority
EP
European Patent Office
Prior art keywords
tubes
hopper
steam generator
funnel
gas
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
EP86111016A
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German (de)
English (en)
Other versions
EP0217079B2 (fr
EP0217079A1 (fr
Inventor
Abdulla Salem
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.)
Trasformazione Societaria sulzer AG
Original Assignee
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
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Application filed by Gebrueder Sulzer AG filed Critical Gebrueder Sulzer AG
Publication of EP0217079A1 publication Critical patent/EP0217079A1/fr
Publication of EP0217079B1 publication Critical patent/EP0217079B1/fr
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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 steam generator with a furnace for fossil fuels, which has a vertical gas passageway formed from pipes which are welded together in a gas-tight manner, at the lower end of which a funnel is also formed which is formed from pipes which are also gas-tightly welded to one another, the pipes of the gas passageway and the pipes of the funnel communicate with each other and flow through the work equipment from bottom to top and the pipes of the throttle cable run essentially vertically.
  • the tubes of the funnel are wound helically.
  • the vertically-piped throttle cable retains all of the constructive and manufacturing advantages of the fully vertically-piped steam generator, while the helical-tube funnel - without having to accept a great deal of design effort - ensures that the temperature at which the working fluid enters the pipes of the throttle cable is evened over its circumference.
  • the heat input in the funnel varies particularly strongly as a result of slagging.
  • the heat distribution in the funnel also depends on the particular arrangement of the furnace, so that the resulting temperature distribution can only be controlled to a limited extent.
  • the funnel is therefore of relatively great importance with regard to disturbances in the supply of heat.
  • the vertical throttle cable I of a steam generator fired with coal dust consists of vertical wall tubes 10 welded to one another in gas-tight fashion via webs II, the four identical walls 12, 13, 14 and 15 form.
  • the funnel 2 is tightly connected to this at the lower end of the throttle cable I and also consists of tubes 20 which are welded to one another in a gas-tight manner via webs 21.
  • the funnel tubes 20 are wound helically and communicate with the wall tubes 10 on the working medium side. Water (arrows 16) flows into the funnel tubes 20 fed in at the bottom and flows through them and then up the wall pipes 10 until they emerge. It evaporates while absorbing heat from the combustion of the coal dust.
  • Each funnel tube 20 extends to a horizontal plane 17, indicated by dash-dotted lines in FIG. I, which separates the lower end of the throttle cable I from the funnel. It opens with its upper end into a bifurcation element 3, from which three wall pipes 10 branch off (FIGS. 2 and 3).
  • the funnel 2 alternately has two trapezoidal funnel walls 18a and 18b and two rectangular funnel walls 19a and 19b, the trapezoidal funnel walls 18a and 18b running parallel to one another and in alignment with the walls 12 and 14 of the throttle cable I, whereas the rectangular funnel walls 19a and 19b are arranged parallel to the two oblique edges of the trapezoidal funnel walls 18a and 18b, respectively.
  • the funnel tubes 20 have a larger diameter than the wall tubes 10, as a result of which the funnel walls 18a to 19b are suitable for receiving relatively large ash weights.
  • the funnel tubes 20 with the wall tubes 10 enclose an angle a between 100 ° and 1300, which is chosen to be as large as possible, whereby the length of each funnel tube is as large as possible, which in turn is a good one Distribution of heat absorption for each funnel tube 20 favors.
  • the angle is limited by the thermodynamically and strength-related tube diameter and the web width downwards.
  • the gas flue I '24 has vertical walls 22 which are formed by vertical tubes 10' and webs II 'welded between them.
  • the funnel 2 ' has a horizontal, long rectangular outlet opening 23 at the bottom.
  • the two short sides of the opening 23 are delimited by two vertical, flat funnel walls 24, each of which merges into an oblique, flat funnel wall 25 at its upper ends.
  • the two long sides of the opening 23 are delimited by two oblique funnel walls 26.
  • the funnel 2 ' consists of funnel tubes 20' which are gas-tightly welded to one another via webs 21 ', the wall tubes 10' and the funnel tubes 20 'communicate with one another and water or steam flows through them from bottom to top.
  • the level 17 separating the throttle cable I 'from the funnel 2' lies in the steam generator according to FIG. 4 at the highest point of the funnel walls 26.
  • a manufacturing simplification of the steam generator according to Fig. 4 can be achieved in that in the lower region of the throttle cable I 'e.g. three successive vertical walls 22 are transferred into a new, wider vertical wall by means of an inclined, flat intermediate wall (similar to the inclined flat funnel wall 25), whereby the number of corners in the helically-drilled vertical part of the steam generator is reduced from 24 to 8.
  • one of three different number of wall tubes can branch off from a funnel tube, e.g. one or five, and several funnel tubes can also open into a wall tube. It is also possible to use 3 collectors instead of the fork elements, into which both the wall tubes and the funnel tubes open and which are designed as mixing collectors.
  • the plane 17 separating the throttle cable from the funnel can also run at an angle to the axis of the gas cable instead of at right angles.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Ventilation (AREA)
  • Chimneys And Flues (AREA)

Claims (4)

1. Générateur de vapeur à foyer pour combustibles fossiles, qui présente un dispositif vertical de tirage des gaz constitué par des tuyaux soudés entre eux de manière étanche aux gaz, à l'extrémité inférieure duquel est placé un cône formé par des tuyaux également soudés les uns aux autres de manière étanche aux gaz, les tuyaux du dispositif de tirage des gaz et ceux du cône communiquant entre eux et étant parcourus de bas en haut par un fluide de travail et les tuyaux du dispositif de tirage des gaz étant essentiellement verticaux, caractérisé en ce que les tuyaux du cône sont enroulés en hélice.
2. Générateur de vapeur selon la revendication 1, caractérisé en ce que les tuyaux du cône présentent un plus grand diamètre que ceux du dispositif de tirage des gaz et en ce que chaque tuyau du cône se ramifie en au moins deux tuyaux de paroi.
3. Générateur de vapeur selon la revendication 1 ou 2, caractérisé en ce que les tuyaux du cône forment avec ceux du dispositif de tirage des gaz un angle a compris entre 100 et 130°.
4. Générateur de vapeur selon l'une des revendications 1 à 3, dans lequel le dispositif de tirage des gaz présente une section transversale au minimum pentagonale et l'ouverture horizontale de sortie du cône a une forme rectangulaire allongée à son extrémité inférieure, caractérisé en ce que le cône présente deux parois obliques délimitant les deux grands côtés de l'ouverture de sortie du cône et deux parois verticales planes délimitant les petits côtés de l'ouverture de sortie, qui se transforment chacune à leur bord supérieur en une paroi du cône plane et oblique.
EP86111016A 1985-09-23 1986-08-09 Générateur de vapeur avec un foyer à combustible fossile Expired - Lifetime EP0217079B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4110/85 1985-09-23
CH411085 1985-09-23

Publications (3)

Publication Number Publication Date
EP0217079A1 EP0217079A1 (fr) 1987-04-08
EP0217079B1 true EP0217079B1 (fr) 1990-06-06
EP0217079B2 EP0217079B2 (fr) 1993-10-27

Family

ID=4269992

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86111016A Expired - Lifetime EP0217079B2 (fr) 1985-09-23 1986-08-09 Générateur de vapeur avec un foyer à combustible fossile

Country Status (8)

Country Link
US (1) US4782793A (fr)
EP (1) EP0217079B2 (fr)
JP (1) JP2551561B2 (fr)
CN (1) CN1016532B (fr)
AU (1) AU586889B2 (fr)
CA (1) CA1301567C (fr)
DE (1) DE3671795D1 (fr)
PL (1) PL261411A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IN165916B (fr) * 1985-12-04 1990-02-10 Sulzer Ag
DE58905817D1 (de) * 1988-07-26 1993-11-11 Siemens Ag Durchlaufdampferzeuger.
DE4232880A1 (de) * 1992-09-30 1994-03-31 Siemens Ag Dampferzeuger
DE9412875U1 (de) * 1994-08-10 1994-10-27 Evt Energie & Verfahrenstech Dampferzeuger
US5560322A (en) * 1994-08-11 1996-10-01 Foster Wheeler Energy Corporation Continuous vertical-to-angular tube transitions
DE19548171A1 (de) * 1995-12-22 1997-07-03 Evt Energie & Verfahrenstech Dampferzeuger
GR20010100548A (el) 2000-12-12 2002-09-26 Alstom Power Boiler Gmbh Ατμοπαραγωγος
EP1533565A1 (fr) * 2003-11-19 2005-05-25 Siemens Aktiengesellschaft Générateur de vapeur à passage unique

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE531648A (fr) *
DE1551026A1 (de) * 1966-02-04 1970-01-15 Kohlenscheidungs Gmbh Rohrauskleidung fuer prismatische Brennkammern
CH549756A (de) * 1972-03-17 1974-05-31 Sulzer Ag Brennkammerberohrung.
DE2214697A1 (de) * 1972-03-25 1973-09-27 Sulzer Ag Brennkammerberohrung
CH549757A (de) * 1972-03-30 1974-05-31 Sulzer Ag Brennkammerberohrung.
DE2251396B2 (de) * 1972-10-19 1979-12-06 Borsig Gmbh, 1000 Berlin Brennkammer eines Dampferzeugers
DE2621189C3 (de) * 1976-05-13 1980-02-21 Balcke-Duerr Ag, 4030 Ratingen Vorrichtung zur Aufhängung einer Rohrwand
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
US4473035A (en) * 1982-08-18 1984-09-25 Foster Wheeler Energy Corporation Splitter-bifurcate arrangement for a vapor generating system utilizing angularly arranged furnace boundary wall fluid flow tubes
EP0135664B1 (fr) * 1983-08-31 1988-07-27 GebràœDer Sulzer Aktiengesellschaft Passage de gaz vertical pour un échangeur de chaleur
DE3473637D1 (en) * 1983-09-08 1988-09-29 Sulzer Ag Steam generator
JPS6233205A (ja) * 1985-08-01 1987-02-13 三菱重工業株式会社 非対称分岐管

Also Published As

Publication number Publication date
AU586889B2 (en) 1989-07-27
DE3671795D1 (de) 1990-07-12
AU6300186A (en) 1987-03-26
JP2551561B2 (ja) 1996-11-06
US4782793A (en) 1988-11-08
CN1016532B (zh) 1992-05-06
EP0217079B2 (fr) 1993-10-27
EP0217079A1 (fr) 1987-04-08
PL261411A1 (en) 1987-08-24
CN86105778A (zh) 1987-03-18
CA1301567C (fr) 1992-05-26
JPS6269003A (ja) 1987-03-30

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