EP0217079A1 - 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
EP0217079A1
EP0217079A1 EP86111016A EP86111016A EP0217079A1 EP 0217079 A1 EP0217079 A1 EP 0217079A1 EP 86111016 A EP86111016 A EP 86111016A EP 86111016 A EP86111016 A EP 86111016A EP 0217079 A1 EP0217079 A1 EP 0217079A1
Authority
EP
European Patent Office
Prior art keywords
funnel
pipes
tubes
steam generator
throttle 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
EP86111016A
Other languages
German (de)
English (en)
Other versions
EP0217079B2 (fr
EP0217079B1 (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
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
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Application filed by Sulzer AG, Gebrueder Sulzer AG filed Critical Sulzer AG
Publication of EP0217079A1 publication Critical patent/EP0217079A1/fr
Application granted granted Critical
Publication of EP0217079B1 publication Critical patent/EP0217079B1/fr
Publication of EP0217079B2 publication Critical patent/EP0217079B2/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 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 also run parallel to vertical planes.
  • This steam generator is relatively simple in its construction and manufacture, especially in the case of large steam generator units, since on the one hand the pipes of the throttle cable without the vertical reinforcement Loads - especially the weight - and on the other hand the connection of the throttle cable to the funnel is very simple.
  • a major disadvantage of this steam generator is, however, that the temperature of the working fluid emerging at the upper end of the pipes of the gas train is very different, since the differences in the heat supply in the funnel from the working medium are not compensated for during the flow through the pipes.
  • the funnel tubes and the throttle cable tubes are wound helically. This does compensate for unevenness in the heat supply, because the working fluid in the pipes flows through practically all occurring heat areas.
  • the disadvantage is that the design and manufacture are very complex because the helically wound tubes of the throttle cable are often not able to carry the weight load of the throttle cable and the funnel without reinforcement; the effort increases with the size of the steam generator.
  • 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.
  • a temperature disturbance at the beginning of a pipe has the greatest impact on the average specific volume of the working fluid and thus on the loss of friction pressure.
  • the fluctuations in the loss of frictional pressure are therefore smaller the higher the disturbance occurs geodetically.
  • the disturbances in the funnel are largely neutralized in the steam generator according to the invention, only the disturbances occurring above the funnel can reduce the friction pressure affect lust.
  • a further advantage arises from the fact that, because of the temperature uniformity at the inlet of the gas train pipes, throttling of the working medium in the colder pipes is only required to a small extent, so that the pressure and power losses of the steam generator according to the invention also remain small. Water normally flows in the area of the funnel, so that the friction pressure losses are only insignificantly greater than in the case of the corresponding vertically tube-shaped funnel.
  • the vertical throttle cable 1 of a steam generator fired with coal dust consists of gas with one another via webs II tightly welded, vertical wall tubes l0, which form four identical walls l2, l3, l4 and l5.
  • the funnel 2 is tightly connected to the lower end of the throttle cable 1 and also consists of tubes 20 welded to one another in gas-tight fashion via webs 2l.
  • the funnel tubes 20 are wound in a helical shape and communicate on the working side with the wall tubes l0. Water (arrows l6) is fed into the funnel tubes 20 below and flows through them and then upwards through the wall tubes 10 until they exit. 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. 1, which separates the lower end of the throttle cable 1 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 l8a and l8b and two rectangular funnel walls l9a and l9b, the trapezoidal funnel walls l8a and l8b running parallel to one another and in alignment with the walls l2 and l4 of the throttle cable l, whereas the rectangular funnel walls l9a and l9b are arranged parallel to the two oblique edges of the trapezoidal funnel walls 188 and 188, respectively.
  • the funnel tubes 20 have a larger diameter than the wall tubes l0, as a result of which the funnel walls l8a to l9b are suitable for receiving relatively large ash weights.
  • the funnel tubes 20 with the wall tubes l0 enclose an angle ⁇ between 100 ° and 130 °, which is chosen as large as possible, whereby the length of each funnel tube is as long as possible, which in turn is a good distribution of Heat absorption favored for each funnel tube 20.
  • the angle is limited by the thermodynamically and strength-related tube diameter and the web width downwards.
  • the gas flue l '24 has vertical walls 22 which are formed by vertical tubes l0' and fins ll 'welded between them.
  • the funnel 2 ' has at the bottom a horizontal outlet opening 23 with a long rectangular shape.
  • 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 welded together in a gas-tight manner via webs 2l ', 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 l7 separating the throttle cable 1 ′ 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 1 '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.

Landscapes

  • 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)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Ventilation (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Chimneys And Flues (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
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
CH411085 1985-09-23
CH4110/85 1985-09-23

Publications (3)

Publication Number Publication Date
EP0217079A1 true EP0217079A1 (fr) 1987-04-08
EP0217079B1 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)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9412875U1 (de) * 1994-08-10 1994-10-27 Evt Energie- Und Verfahrenstechnik Gmbh, 70329 Stuttgart Dampferzeuger
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

Families Citing this family (5)

* 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
US5560322A (en) * 1994-08-11 1996-10-01 Foster Wheeler Energy Corporation Continuous vertical-to-angular tube transitions
EP1533565A1 (fr) * 2003-11-19 2005-05-25 Siemens Aktiengesellschaft Générateur de vapeur à passage unique

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE531648A (fr) *
FR1509439A (fr) * 1966-02-04 1968-01-12 Sulzer Ag Revêtement en tubes pour chambres de combustion prismatiques
DE2214697A1 (de) * 1972-03-25 1973-09-27 Sulzer Ag Brennkammerberohrung
GB2126323A (en) * 1982-08-18 1984-03-21 Foster Wheeler Energy Corp Steam generaters
EP0135664A2 (fr) * 1983-08-31 1985-04-03 GebràœDer Sulzer Aktiengesellschaft Passage de gaz vertical pour un échangeur de chaleur

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH549756A (de) * 1972-03-17 1974-05-31 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
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE531648A (fr) *
FR1509439A (fr) * 1966-02-04 1968-01-12 Sulzer Ag Revêtement en tubes pour chambres de combustion prismatiques
DE2214697A1 (de) * 1972-03-25 1973-09-27 Sulzer Ag Brennkammerberohrung
GB2126323A (en) * 1982-08-18 1984-03-21 Foster Wheeler Energy Corp Steam generaters
EP0135664A2 (fr) * 1983-08-31 1985-04-03 GebràœDer Sulzer Aktiengesellschaft Passage de gaz vertical pour un échangeur de chaleur

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9412875U1 (de) * 1994-08-10 1994-10-27 Evt Energie- Und Verfahrenstechnik Gmbh, 70329 Stuttgart Dampferzeuger
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
DE10159381B4 (de) * 2000-12-12 2005-02-10 Alstom Power Boiler Gmbh Dampferzeuger

Also Published As

Publication number Publication date
CN86105778A (zh) 1987-03-18
EP0217079B2 (fr) 1993-10-27
JP2551561B2 (ja) 1996-11-06
PL261411A1 (en) 1987-08-24
EP0217079B1 (fr) 1990-06-06
JPS6269003A (ja) 1987-03-30
CN1016532B (zh) 1992-05-06
AU6300186A (en) 1987-03-26
US4782793A (en) 1988-11-08
AU586889B2 (en) 1989-07-27
DE3671795D1 (de) 1990-07-12
CA1301567C (fr) 1992-05-26

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