GB997549A - Combined circulation steam generator and method of initiating its operation - Google Patents
Combined circulation steam generator and method of initiating its operationInfo
- Publication number
- GB997549A GB997549A GB6691/64A GB669164A GB997549A GB 997549 A GB997549 A GB 997549A GB 6691/64 A GB6691/64 A GB 6691/64A GB 669164 A GB669164 A GB 669164A GB 997549 A GB997549 A GB 997549A
- Authority
- GB
- United Kingdom
- Prior art keywords
- steam
- turbine
- pump
- generator
- conduit
- 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
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
- F22B29/02—Steam boilers of forced-flow type of forced-circulation type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
- F01K3/18—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
- F01K3/20—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters with heating by combustion gases of main boiler
- F01K3/22—Controlling, e.g. starting, stopping
-
- 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
- F22B29/06—Steam boilers of forced-flow type of once-through type, i.e. built-up from tubes receiving water at one end and delivering superheated steam at the other end of the tubes
- F22B29/12—Steam boilers of forced-flow type of once-through type, i.e. built-up from tubes receiving water at one end and delivering superheated steam at the other end of the tubes operating with superimposed recirculation during starting and low-load periods, e.g. composite boilers
-
- 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
- F22B35/14—Control systems for steam boilers for steam boilers of forced-flow type during the starting-up periods, i.e. during the periods between the lighting of the furnaces and the attainment of the normal operating temperature of the steam boilers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D11/00—Feed-water supply not provided for in other main groups
- F22D11/02—Arrangements of feed-water pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G5/00—Controlling superheat temperature
Abstract
997,549. Forced flow steam boilers. COMBUSTION ENGINEERING Inc. Feb. 18, 1964 [March 25, 1963], No. 6691/64. Heading F4A. A once through forced flow steam generator having a main fuel pump driven by steam from an auxiliary boiler during start up and fluid recirculation through the portion of the generator having the highest heat absorption comprises an economizer 12, tube lined furnace centre and outer walls 14, 16, gas pass walls 18 and a series of fluid heaters 20 consisting of sinuous inter-nested tubular panels. Steam passes from the heaters 20 through H.P. and L.P. turbines 28, 34 to condenser 38 from which condensate passes to a demineralizer 44, L.P. feedwater heaters 46, de-aerator 48, motor driven feedwater booster pump 50, intermediate pressure heaters 52, main feed pump 54 driven by steam turbine 88, H.P. feedwater heaters 56 and re-enters the generator via feedwater control valve 10. Fluid is recirculated through the furnace wall sections 14, 16, 18 and conduit 58 connected to a mixing vessel 60 downstream of economizer 12 by a pump 62. Suitable valves 64 are placed upstream and downstream of the pump which is bypassed by conduit 66 containing a check valve 68. Boiler throttle and boiler throttle bypass valves 70, 72 are provided immediately before the heaters 20 and a flash tank 76 is connected up and downstream of these valves by conduits 74, 80 containing reducing valve 78 and control valve 82, the lower portion of the tank being connected to the hot well of the condenser by conduit 84. The method of starting comprises filling the generator by means of pump 50 to the level of valves 70, 72 which are closed, starting the recirculating pump 62 and circulating about 10% of maximum flow through the portion of the generator upstream of valves 70, 72 and through conduits 74, 84 with pump 54 and commencing heating. Pump 54 is driven by turbine 88 supplied with steam from an auxiliary boiler 90 normally provided to supply steam for turbine sealing (through conduit 94), soot blowing, air preheating &c. The valve 78 maintains a relatively high pressure in the generator and as the fluid heats up a portion flashes to steam in the tank 76. This is passed through conduit 80 to the fluid heaters 20 and when the quantity and pressure is sufficient is admitted to the turbine to heat, roll and synchronize the turbine. As the fluid temperature rises valves 70, 72 are opened and valve 78 is closed. The turbine 88 is supplied with steam from boiler 90 until the temperature and pressure of the steam produced by the generator are at least equal to those of the auxiliary boiler steam. Generator steam is initially supplied through conduit 104 until the main generator load exceeds, for example, one third of maximum load, when for greater efficiency H.P. steam extracted from the turbine 28 is used, being conveyed to the pump turbine via conduit 108. Normally, at loads below one third of maximum, steam is supplied to the turbine through conduits 104, 112 in parallel. The turbine 88 may be of the condensing or non-condensing type with exhausted steam returned to the de-aerator.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US267511A US3194020A (en) | 1963-03-25 | 1963-03-25 | Method and apparatus relating to vapor generation |
Publications (1)
Publication Number | Publication Date |
---|---|
GB997549A true GB997549A (en) | 1965-07-07 |
Family
ID=23019092
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB6691/64A Expired GB997549A (en) | 1963-03-25 | 1964-02-18 | Combined circulation steam generator and method of initiating its operation |
Country Status (6)
Country | Link |
---|---|
US (1) | US3194020A (en) |
BE (1) | BE644873A (en) |
CH (1) | CH423814A (en) |
ES (1) | ES297166A1 (en) |
GB (1) | GB997549A (en) |
NL (1) | NL6401924A (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3338053A (en) * | 1963-05-20 | 1967-08-29 | Foster Wheeler Corp | Once-through vapor generator start-up system |
US3431168A (en) * | 1967-06-26 | 1969-03-04 | Gen Electric | Reactor cooling system |
US3523421A (en) * | 1968-07-24 | 1970-08-11 | Combustion Eng | Peaking load steam cycle |
US3705494A (en) * | 1971-01-04 | 1972-12-12 | Fester Wheeler Corp | Holding system for steam power cycle |
US3777486A (en) * | 1971-01-29 | 1973-12-11 | Carrier Corp | Apparatus for and a method of operating power recovery equipment |
DE2241237C3 (en) * | 1972-08-22 | 1981-11-05 | Kraftwerk Union AG, 4330 Mülheim | Feed water purification device for a steam power plant with a boiling water reactor |
JPS5138204A (en) * | 1974-09-30 | 1976-03-30 | Kawasaki Heavy Ind Ltd | KOROGASUENERUGIIKAISHUPURANTONO SEIGYOHOHO |
US4533731A (en) * | 1982-03-17 | 1985-08-06 | Asahi Kasei Kogyo Kabushiki Kaisha | Aminoindazole derivatives |
TW212826B (en) * | 1991-11-28 | 1993-09-11 | Sulzer Ag | |
WO1998015778A1 (en) * | 1996-10-08 | 1998-04-16 | Siemens Aktiengesellschaft | Condensate and feedwater course of a steam power plant and steam power plant having the condensate and feedwater course |
CN103017133B (en) * | 2012-12-30 | 2016-03-30 | 哈尔滨锅炉厂有限责任公司 | Start-up Systems for Direct-through Boilers with circulating pump and starting method thereof |
CN104131846A (en) * | 2014-07-14 | 2014-11-05 | 国家电网公司 | Steam source automatic switching device and method applied to 300 MW turboset steam-driven water feed pump |
US10577962B2 (en) * | 2016-09-07 | 2020-03-03 | General Electric Company | Turbomachine temperature control system |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA617110A (en) * | 1961-03-28 | Lieberherr Arthur | Method for draining the tube system of a steam generator | |
DE386047C (en) * | 1923-12-01 | Siemens & Halske Akt Ges | Process for the production of contact fields with multiple switched contacts | |
US1892093A (en) * | 1932-12-27 | Method of removing rust | ||
US1064855A (en) * | 1911-01-12 | 1913-06-17 | Richard William Parry | Feed-water heating and purifying means. |
US1791923A (en) * | 1928-06-16 | 1931-02-10 | Siemens Ag | Multiway sludge valve |
US2556128A (en) * | 1945-08-17 | 1951-06-05 | Thomas L B Webb | Method for removing scale |
US2907305A (en) * | 1953-10-27 | 1959-10-06 | Sulzer Ag | Method of generating steam in a forced flow steam generator |
US2858808A (en) * | 1954-04-08 | 1958-11-04 | Babcock & Wilcox Co | Method of operating a supercritical pressure vapor generator |
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 |
US3009325A (en) * | 1955-05-27 | 1961-11-21 | Babcock & Wilcox Co | Once-through vapor generating and superheating unit |
US2989038A (en) * | 1956-04-26 | 1961-06-20 | Duerrwerke Ag | Device for starting-up once-through boilers |
BE564616A (en) * | 1957-02-07 | |||
US3085915A (en) * | 1958-03-13 | 1963-04-16 | Siemens Ag | Method of removing rust from ironcontaining materials, particularly for the cleaning of boiler plants |
US3010853A (en) * | 1959-05-14 | 1961-11-28 | Solvent Service Inc | Method of cleaning pipes and the like |
US3019774A (en) * | 1959-09-16 | 1962-02-06 | Dunwerke Ag | Once-through vapor generator |
US3162179A (en) * | 1962-12-05 | 1964-12-22 | Gilbert Associates | Fluid circulation system for a oncethrough type steam generator |
US3159145A (en) * | 1963-02-26 | 1964-12-01 | Gilbert Associates | Steam generator by-pass systems for a steam-electric generating plant |
-
1963
- 1963-03-25 US US267511A patent/US3194020A/en not_active Expired - Lifetime
-
1964
- 1964-02-18 GB GB6691/64A patent/GB997549A/en not_active Expired
- 1964-02-27 NL NL6401924A patent/NL6401924A/xx unknown
- 1964-03-03 ES ES0297166A patent/ES297166A1/en not_active Expired
- 1964-03-06 BE BE644873A patent/BE644873A/xx unknown
- 1964-03-11 CH CH313264A patent/CH423814A/en unknown
Also Published As
Publication number | Publication date |
---|---|
BE644873A (en) | 1964-09-07 |
NL6401924A (en) | 1964-09-28 |
US3194020A (en) | 1965-07-13 |
ES297166A1 (en) | 1964-08-16 |
CH423814A (en) | 1966-11-15 |
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