GB1089383A - Improvements in or relating to starting once-through vapor generators - Google Patents
Improvements in or relating to starting once-through vapor generatorsInfo
- Publication number
- GB1089383A GB1089383A GB16579/65A GB1657965A GB1089383A GB 1089383 A GB1089383 A GB 1089383A GB 16579/65 A GB16579/65 A GB 16579/65A GB 1657965 A GB1657965 A GB 1657965A GB 1089383 A GB1089383 A GB 1089383A
- Authority
- GB
- United Kingdom
- Prior art keywords
- line
- valve
- flow
- steam
- boiler
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 3
- 238000005276 aerator Methods 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 238000010304 firing Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 210000004907 gland Anatomy 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000010792 warming Methods 0.000 abstract 1
Classifications
-
- 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
- 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
- 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
- F01K9/00—Plants characterised by condensers arranged or modified to co-operate with the engines
- F01K9/04—Plants characterised by condensers arranged or modified to co-operate with the engines with dump valves to by-pass stages
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
- Control Of Turbines (AREA)
Abstract
1,089,383. Raising steam in forced flow once through generators. FOSTER WHEELER CORPORATION. April 20, 1965 [April 24, 1964], No. 16579/65. Heading F4A. A once through forced flow supercritical or subcritical vapour generator is started up by establishing a 30% full load fluid flow through the boiler circuitry 12, 14, 16 and the primary and/or platen superheater 22, and with the main flow line stop valve 52 being closed, through a first by-pass loop line 50 to a vapour/ liquid separator 48 whose pressure is set at 1500 p.s.i. to maintain a like boiler circuitry pressure by means of valves 72, 74 in outlet lines 68a, 68b, the output from the separator passing through the lines 68a, 68b to the condensate system for re-use as boiler feed water. As heating from the burners at 15% full load firing rate continues, steam flashing in separator 48 is fed via lines 60, 60a, 60b and 44a to the gland seal regulator 62, de-aerator 38 and high pressure feed water heaters 44, 42. Once a separator pressure of 1500 p.s.i. is reached, valve 58 in vapour line 60 to the inletof finishing superheater 24 is cracked open to supply warming steam to the main steam line, the steam from the finishing superheater outlet 24a by-passing the turbines through by-pass line 78. When 5% full load steam flow becomes available from the separator a portion is passed through line 60 and finishing superheater 24 to the turbine throttle by-pass control valve 90 (Fig. 2, not shown) to warm and roll the turbine, the excess passing to the condensate system through lines 60a, 60b, 44a and 78. To load the turbines valve 58 is opened wide to increase the turbine load to 15% at 1500 p.s.i. throttle pressure, now under control of the governor valves 88 (Fig. 2, not shown) and when the entire 30% full load flow in the boiler circuitry is vaporized, main flow line valve 52 is opened, valve 58 in vapour line 60 is closed and pressure reducing valve 77 in the second by-pass loop line 75 is opened to by-pass a portion of the vapour generated around the turbines. The amount by-passed is reduced as turbine load is increased, by throttling valve 77. At 30% full load flow all the boiler circuitry flow passes through the main steam line and the second by-pass loop line 75 is also shut off. Loading to full load is then achieved through control of the governor valves 88, the feed water supply and the combustion conditions; The system throughout may be under automatic control in response to the load demands.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US362229A US3286466A (en) | 1964-04-24 | 1964-04-24 | Once-through vapor generator variable pressure start-up system |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1089383A true GB1089383A (en) | 1967-11-01 |
Family
ID=23425233
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB16579/65A Expired GB1089383A (en) | 1964-04-24 | 1965-04-20 | Improvements in or relating to starting once-through vapor generators |
Country Status (3)
Country | Link |
---|---|
US (1) | US3286466A (en) |
DE (1) | DE1426701B2 (en) |
GB (1) | GB1089383A (en) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3345975A (en) * | 1965-10-22 | 1967-10-10 | Foster Wheeler Corp | Reheater and superheater circuit arrangement |
US3423941A (en) * | 1965-12-20 | 1969-01-28 | Combustion Eng | Temperature and flow regulating apparatus |
US3417737A (en) * | 1966-09-20 | 1968-12-24 | Foxboro Co | Once-through boiler control system |
US3411300A (en) * | 1967-05-31 | 1968-11-19 | Combustion Eng | Method and apparatus for sliding pressure operation of a vapor generator at subcritical and supercritical pressure |
US3532453A (en) * | 1968-07-02 | 1970-10-06 | Foster Wheeler Corp | Start-up system for once-through boiler |
US3724212A (en) * | 1969-11-26 | 1973-04-03 | Wheeler Foster J Brown Boilers | Power plants |
US3693353A (en) * | 1970-05-14 | 1972-09-26 | Jacques Lemoine | Method and means for preventing low temperature corrosion, by sulphur containing flue gases, of the terminal parts of air heating means |
US3668838A (en) * | 1970-12-07 | 1972-06-13 | Dalph C Mcneil | Flash economizer |
JPS5210161B2 (en) * | 1971-10-21 | 1977-03-22 | ||
US3934419A (en) * | 1973-06-12 | 1976-01-27 | Westinghouse Electric Corporation | Load control system especially adapted for a HTGR power plant turbine |
CH599504A5 (en) * | 1975-09-26 | 1978-05-31 | Sulzer Ag | |
US4019467A (en) * | 1976-04-20 | 1977-04-26 | Westinghouse Electric Corporation | Valve sequencing startup control system for once-through boiler |
US4208882A (en) * | 1977-12-15 | 1980-06-24 | General Electric Company | Start-up attemperator |
US4178763A (en) * | 1978-03-24 | 1979-12-18 | Westinghouse Electric Corp. | System for minimizing valve throttling losses in a steam turbine power plant |
US4178762A (en) * | 1978-03-24 | 1979-12-18 | Westinghouse Electric Corp. | Efficient valve position controller for use in a steam turbine power plant |
US4391101A (en) * | 1981-04-01 | 1983-07-05 | General Electric Company | Attemperator-deaerator condenser |
KR870001505B1 (en) * | 1981-05-12 | 1987-08-19 | 더 뱁콕 앤드 윌콕스 캄파니 | Control system variable pressure once-through boilers |
US5390631A (en) * | 1994-05-25 | 1995-02-21 | The Babcock & Wilcox Company | Use of single-lead and multi-lead ribbed tubing for sliding pressure once-through boilers |
US8176723B2 (en) * | 2008-12-31 | 2012-05-15 | General Electric Company | Apparatus for starting a steam turbine against rated pressure |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2989038A (en) * | 1956-04-26 | 1961-06-20 | Duerrwerke Ag | Device for starting-up once-through boilers |
US3220193A (en) * | 1961-01-06 | 1965-11-30 | Gilbert Associates | Devices for improving operating flexibility of steam-electric generating plants |
US3120839A (en) * | 1961-12-28 | 1964-02-11 | Duerrwerke Ag | Device for low load operation of once-through boilers |
US3159145A (en) * | 1963-02-26 | 1964-12-01 | Gilbert Associates | Steam generator by-pass systems for a steam-electric generating plant |
US3172266A (en) * | 1963-02-26 | 1965-03-09 | Gilbert Associates | Automatic start-up devices for a steamelectric generating plant |
US3194217A (en) * | 1963-03-25 | 1965-07-13 | Combustion Eng | Boiler cleanup method for combined circulation steam generator |
US3212477A (en) * | 1963-09-05 | 1965-10-19 | Combustion Eng | Forced flow steam generator and method of starting same |
-
1964
- 1964-04-24 US US362229A patent/US3286466A/en not_active Expired - Lifetime
-
1965
- 1965-04-20 GB GB16579/65A patent/GB1089383A/en not_active Expired
- 1965-04-23 DE DE19651426701 patent/DE1426701B2/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE1426701A1 (en) | 1969-10-23 |
DE1426701B2 (en) | 1972-02-24 |
US3286466A (en) | 1966-11-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1089383A (en) | Improvements in or relating to starting once-through vapor generators | |
GB1073581A (en) | Improvements in and relating to start-up or low load operation of forced-flow once-through steam generating units | |
GB894533A (en) | Steam generators having two combustion chamber systems | |
US4080789A (en) | Steam generator | |
GB1200954A (en) | Method of operating a vapor power plant at subcritical and supercritical pressure and a plant for carrying out the method | |
GB957371A (en) | Vapour-generating power plants | |
GB1166046A (en) | Improvements in or relating to Starting Up Forced-Flow Boilers | |
GB952398A (en) | Forced-flow once-through steam generators with intermediate reheating | |
GB1052417A (en) | ||
GB1089056A (en) | Improvements in or relating to apparatus for starting up vapour power plants | |
US3612005A (en) | Once-through steam generator recirculating startup system | |
US3096744A (en) | Method of and apparatus for regulating the steam temperature in a steam generator | |
GB1116706A (en) | Startup system for a steam actuated electric generator | |
US2257805A (en) | Means for regulating the temperature of superheated steam | |
US3366093A (en) | Start-up system for once-through vapor generators | |
GB879032A (en) | A method of starting-up and closing-down a once-through forced-flow, vapour generating and superheating unit, and such a unit | |
GB1102168A (en) | Improvements in or relating to forced-flow vapour generators | |
GB858928A (en) | Method of and apparatus for discharging liquid working medium out of the separator of a forced through-flow steam generator | |
GB982418A (en) | Forced-flow once-through vapour generators | |
GB1083170A (en) | Common startup system for vapour generators | |
GB1028509A (en) | Apparatus and method for operating a vapor generator at subcritical and supercritical pressures | |
US1925256A (en) | Steam generator | |
US3361117A (en) | Start-up system for forced flow vapor generator and method of operating the vapor generator | |
GB1099479A (en) | Starting method and system for a power plant containing a prime mover and a vapour generator | |
GB967941A (en) | Power plant comprising a vapour turbine |