GB971195A - Improvements in steam turbine power plants - Google Patents

Improvements in steam turbine power plants

Info

Publication number
GB971195A
GB971195A GB28277/62A GB2827762A GB971195A GB 971195 A GB971195 A GB 971195A GB 28277/62 A GB28277/62 A GB 28277/62A GB 2827762 A GB2827762 A GB 2827762A GB 971195 A GB971195 A GB 971195A
Authority
GB
United Kingdom
Prior art keywords
steam
heaters
turbine
conduit
heater
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
GB28277/62A
Inventor
Adolf Frankel
Peter Harding Brazier
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries Ltd
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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB28277/62A priority Critical patent/GB971195A/en
Priority to US295035A priority patent/US3238729A/en
Priority to CH904763A priority patent/CH418361A/en
Priority to SE8115/63A priority patent/SE305221B/xx
Publication of GB971195A publication Critical patent/GB971195A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/34—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating
    • F01K7/40—Use of two or more feed-water heaters in series
    • 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
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/34—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating
    • F01K7/42—Use of desuperheaters for feed-water heating
    • 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
    • F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
    • F22D1/32—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

971,195. Heating feedwater. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. July 8, 1963 [July 23, 1962], No. 28277/62. Heading F4A. In a steam turbine power plant comprising a boiler 1 supplying steam to a high pressure turbine 3H and thence to a double low pressure turbine 3L from which steam exhausts to a condenser 5, condensate is withdrawn by a pump 21 and returned to the boiler through condensing heaters 23, 25 and condensing heaters 27, 29 supplied respectively with bled steam from the turbines 3L, 3H, the steam being bled from the H.P. turbine at a single point and from the L.P. turbine sections at equivalent points, whereafter the bleed lines 35, 37 bifurcate into respective conduits 35S, 35F and 37S, 37F, the steam to heater 27 first flowing through a heater 31 in which desuperheating occurs. The dimensions of the conduits 37F, 37S and of the associated heaters 23, 25 are such that the mass flow rate of steam through the conduit 37F is 75 to 85% of the total bled steam whilst the steam velocity therethrough is some three times that in the conduit 37S. The dimensions of the conduits 35F, 35S and the heater 31 in which desuperheating occurs and the heaters 27, 29 are chosen to give similar conditions. The pressure drops produced in the conduit 37F and the conduit 35F and desuperheater 31 are respectively much larger than those in the conduits 37S and 35S in which the pressure drops are kept to a mimimum practical value with the result that the saturation pressure and temperature in the second condensing parts 25, 29 of the feedwater heaters are greater than in the first condensing parts, enabling the feedwater to be heated to the highest possible temperature. As shown in Fig. 2, the heater sections 27, 29 and 31 may be combined in a single vessel comprising a shell 65 housing a bank of nested, inverted U- tubes 51 conveying the feedwater. Baffles 71, 72, 75 divide the shell interior into three compartments corresponding to the sections 27, 29, 31. Superheated bled steam enters compartment 31 at 77 and passes thence at a lowered pressure through apertures in the baffle 75 into compartment 27 wherein it condenses. Higher pressure steam enters compartment 29 wherein it condenses, the condensate flowing into the compartment 27 which is provided with a condensate drain (not shown).
GB28277/62A 1962-07-23 1962-07-23 Improvements in steam turbine power plants Expired GB971195A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB28277/62A GB971195A (en) 1962-07-23 1962-07-23 Improvements in steam turbine power plants
US295035A US3238729A (en) 1962-07-23 1963-07-15 Steam turbine power plants
CH904763A CH418361A (en) 1962-07-23 1963-07-19 Method for operating a power plant and steam turbine power plant for carrying out the method
SE8115/63A SE305221B (en) 1962-07-23 1963-07-22

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB28277/62A GB971195A (en) 1962-07-23 1962-07-23 Improvements in steam turbine power plants

Publications (1)

Publication Number Publication Date
GB971195A true GB971195A (en) 1964-09-30

Family

ID=10273110

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28277/62A Expired GB971195A (en) 1962-07-23 1962-07-23 Improvements in steam turbine power plants

Country Status (4)

Country Link
US (1) US3238729A (en)
CH (1) CH418361A (en)
GB (1) GB971195A (en)
SE (1) SE305221B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105464726A (en) * 2015-12-31 2016-04-06 华电莱州发电有限公司 Energy conservation and emission reduction system with double back-pressure condensers in thermal power station

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2243417B2 (en) * 1972-09-04 1976-07-29 Siemens AG, 1000 Berlin und 8000 München STEAM GENERATORS, IN PARTICULAR FOR PRESSURE WATER REACTORS
US4074660A (en) * 1975-11-24 1978-02-21 The Lummus Company Waste heat recovery from high temperature reaction effluents
DE3616797A1 (en) * 1986-05-17 1987-11-19 Koerting Ag Steam turbine system
DE59301406D1 (en) * 1992-09-30 1996-02-22 Siemens Ag Process for operating a power plant and system operating thereon
DE19535318C2 (en) * 1995-09-22 1997-11-27 Steag Ag Method and arrangement for preheating the feed water of a steam generator in power plant processes
DE19537478C1 (en) * 1995-10-09 1996-12-12 Siemens Ag Multi-stage steam turbine power generation plant
DE19541543C2 (en) * 1995-11-08 1997-10-16 Steag Ag Method and arrangement for preheating the main condensate in power plant processes
DE102011078193A1 (en) * 2011-06-28 2013-01-03 Siemens Aktiengesellschaft Additional control tap for a preheater to improve the system dynamics and frequency control in a steam power plant
CN104763485B (en) * 2014-04-30 2016-04-27 南京博沃科技发展有限公司 A kind of concurrent heating type ultrahigh pressure/subcritical back pressure thermal power plant unit thermodynamic system
CN107905858B (en) * 2017-11-17 2023-06-30 中国大唐集团科学技术研究院有限公司火力发电技术研究所 Final stage safety flow monitoring and controlling system and method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1781368A (en) * 1925-03-23 1930-11-11 Westinghouse Electric & Mfg Co Power plant
US1846047A (en) * 1925-05-14 1932-02-23 Griscom Russell Co Evaporator system
US1750035A (en) * 1926-11-19 1930-03-11 Griscom Russell Co Deaerator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105464726A (en) * 2015-12-31 2016-04-06 华电莱州发电有限公司 Energy conservation and emission reduction system with double back-pressure condensers in thermal power station

Also Published As

Publication number Publication date
SE305221B (en) 1968-10-21
CH418361A (en) 1966-08-15
US3238729A (en) 1966-03-08

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