GB1007737A - Forced flow vapour generators - Google Patents

Forced flow vapour generators

Info

Publication number
GB1007737A
GB1007737A GB29027/62A GB2902762A GB1007737A GB 1007737 A GB1007737 A GB 1007737A GB 29027/62 A GB29027/62 A GB 29027/62A GB 2902762 A GB2902762 A GB 2902762A GB 1007737 A GB1007737 A GB 1007737A
Authority
GB
United Kingdom
Prior art keywords
centrewall
section
waterwall
flow
recirculation
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
Application number
GB29027/62A
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
Sulzer Freres SA
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, Sulzer Freres SA filed Critical Sulzer AG
Publication of GB1007737A publication Critical patent/GB1007737A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B29/00—Steam boilers of forced-flow type
    • F22B29/04—Steam boilers of forced-flow type of combined-circulation type, i.e. in which convection circulation due to the difference in specific gravity between cold and hot water is promoted by additional measures, e.g. by injecting pressure-water temporarily
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B29/00—Steam boilers of forced-flow type
    • F22B29/02—Steam boilers of forced-flow type of forced-circulation type
    • F22B29/023—Steam boilers of forced-flow type of forced-circulation type without drums, i.e. without hot water storage in the boiler
    • F22B29/026—Steam boilers of forced-flow type of forced-circulation type without drums, i.e. without hot water storage in the boiler operating at critical or supercritical pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B35/00—Control systems for steam boilers
    • F22B35/06—Control systems for steam boilers for steam boilers of forced-flow type
    • F22B35/10—Control systems for steam boilers for steam boilers of forced-flow type of once-through type
    • F22B35/12—Control systems for steam boilers for steam boilers of forced-flow type of once-through type operating at critical or supercritical pressure
    • F22B35/125—Control systems for steam boilers for steam boilers of forced-flow type of once-through type operating at critical or supercritical pressure operating with superimposed recirculation during starting or low load periods, e.g. composite boilers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

1,007,737. Forced flow steam boilers. SULZER FRERES S.A. July 27, 1962 [July 27, 1961], No. 29027/62. Heading F4A. A forced flow vapour generator particularly for operation at supercritical pressure has a combustion chamber 32 lined with waterwall tubes 14 which extend vertically and in parallel relation between inlet and outlet headers 30, 18. Centrewall tubes 12 extending similarly between headers 24, 26 form a partition in the chamber 32 and are connected in series with and upstream of the tubes 14 in relation to the flow of working medium. At full load working medium is supplied by a feed pump 22 through lines 46, 200 to the centrewall and waterwall heating surfaces and flows directly from the header 18 to a superheater 48 and thence to a turbine 56. At part load a recirculation pump 10 draws some of the working medium from the header 18 and delivers it through lines 60, 78 to mixing vessels 20, 80 and thence by lines 200, 28 to the centrewall and waterwall section respectively. By this means only part of the recirculated working medium passes through the centrewall section which, having a smaller crosssectional flow area, requires less recirculation flow at low loads to protect the tubes than does the waterwall section. A throttling valve 82 may be used to determine the proportions of the recirculating flow. Recirculation through the centrewall section may cease before that through the waterwall section, the point at which recirculation ceases depending upon the characteristics of the pump and upon the pressure conditions in the vapour generator. In modifications the recirculation pump is disposed in series with the main through flow of working medium downstream of the waterwall section (Fig. 3, not shown); upstream of the centrewall section (Fig. 4, not shown), and between these two sections (Fig. 5, not shown). In a further modification (Fig. 6, not shown) the pump 10 is disposed between the centrewall and waterwall sections 12, 14 but the recirculation flow for the centrewall section only is taken from a point upstream of the waterwall section.
GB29027/62A 1961-07-27 1962-07-27 Forced flow vapour generators Expired GB1007737A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US127386A US3213835A (en) 1961-07-27 1961-07-27 Recirculating system having partial bypass around the center wall

Publications (1)

Publication Number Publication Date
GB1007737A true GB1007737A (en) 1965-10-22

Family

ID=22429829

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29027/62A Expired GB1007737A (en) 1961-07-27 1962-07-27 Forced flow vapour generators

Country Status (5)

Country Link
US (1) US3213835A (en)
BE (1) BE620764A (en)
CH (1) CH396947A (en)
ES (1) ES279533A1 (en)
GB (1) GB1007737A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3297004A (en) * 1965-08-26 1967-01-10 Riley Stoker Corp Supercritical pressure recirculating boiler
US3369526A (en) * 1966-02-14 1968-02-20 Riley Stoker Corp Supercritical pressure boiler
US3434460A (en) * 1966-11-30 1969-03-25 Combustion Eng Multicircuit recirculation system for vapor generating power plant
US3399656A (en) * 1967-01-19 1968-09-03 Electrodyne Res Corp Circulation system for a steam generator
DE2144675C3 (en) * 1971-09-07 1981-05-27 Kraftwerk Union AG, 4330 Mülheim Continuous steam generator
DE2847340C2 (en) * 1978-10-31 1987-02-19 Kraftwerk Union AG, 4330 Mülheim Steam generator for generating steam from low-quality feed water
DE2918703C2 (en) * 1979-05-09 1984-10-18 Kraftwerk Union AG, 4330 Mülheim Adjustable heat exchanger
DK0439765T3 (en) * 1990-01-31 1995-10-02 Siemens Ag A steam generator
DE602004016561D1 (en) * 2003-11-19 2008-10-23 Scf Technologies As METHOD AND PROCESS FOR CONTROLLING THE TEMPERATURES FLUIDS AND DEVICE THEREFOR
IT1395108B1 (en) * 2009-07-28 2012-09-05 Itea Spa BOILER

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB451992A (en) * 1934-09-21 1936-08-14 Siemens Ag Improvements in and relating to tubulous steam generators
GB506388A (en) * 1936-11-24 1939-05-24 Babcock & Wilcox Ltd Improvements in or relating to forced flow boilers
US2324513A (en) * 1940-01-05 1943-07-20 Raymond D Junkins Control system
GB768201A (en) * 1955-03-24 1957-02-13 Babcox & Wilcox Ltd Improvements relating to forced flow once through tubulous vapour generating and superheating units and to the starting of turbines arranged to be supplied with vapour from such units
BE564616A (en) * 1957-02-07

Also Published As

Publication number Publication date
CH396947A (en) 1965-08-15
ES279533A1 (en) 1962-12-01
BE620764A (en)
US3213835A (en) 1965-10-26

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