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GB1486569A - Control system for a power producing unit - Google Patents

Control system for a power producing unit

Info

Publication number
GB1486569A
GB1486569A GB3846374A GB3846374A GB1486569A GB 1486569 A GB1486569 A GB 1486569A GB 3846374 A GB3846374 A GB 3846374A GB 3846374 A GB3846374 A GB 3846374A GB 1486569 A GB1486569 A GB 1486569A
Authority
GB
United Kingdom
Prior art keywords
boilers
boiler
demand signal
demand
total
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
GB3846374A
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.)
Babcock and Wilcox Co
Original Assignee
Babcock and Wilcox Co
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 Babcock and Wilcox Co filed Critical Babcock and Wilcox Co
Priority to GB3846374A priority Critical patent/GB1486569A/en
Publication of GB1486569A publication Critical patent/GB1486569A/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
    • F01K9/00—Plants characterised by condensers arranged or modified to co-operate with the engines
    • F01K9/02—Arrangements or modifications of condensate or air pumps
    • F01K9/023—Control thereof
    • 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
    • F01K13/00—General layout or general methods of operation of complete plants
    • F01K13/02—Controlling, e.g. stopping or starting
    • 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
    • F01K7/16—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 only of turbine type
    • F01K7/22—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 only of turbine type the turbines having inter-stage steam heating
    • F01K7/24—Control or safety means specially adapted therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B35/00—Control systems for steam boilers
    • F22B35/008—Control systems for two or more steam generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/08—Regulating fuel supply conjointly with another medium, e.g. boiler water
    • F23N1/082—Regulating fuel supply conjointly with another medium, e.g. boiler water using electronic means

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 Turbines (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)

Abstract

1486569 Controlling boilers BABCOCK & WILCOX CO 3 Sept 1974 38463/74 Heading F4A [Also in Division G3] A power generating system comprising two boilers and a single turbine has each boiler controlled by a demand signal produced by providing a total desired output signal and a ratio controller responsive to this total signal to generate the individual boiler demand signals. In the arrangement shown in Fig. 1 the boilers are shown as A and B and include a furnace 20, primary and secondary superheaters 21, 12 and an interstage reheater 13. The turbine 8 has a high pressure stage 9 and a low pressure stage 10 and drives a generator 11. The steam after passing through the low pressure stage is condensed and pumped through low pressure heater 16, de-aerating heater 17 to the feed pumps 18 for the respective boilers. In the control system shown in Fig. 3, a demand signal is generated corresponding to the desired energy output and this is converted in master controller 30 into a total boiler demand signal. The ratio control 32 provides a demand signal for boilers A and B which are used in the respective feed water, firing rate and reheat flow controls. In general there are limits on the various parameters which are used in the boiler operation and by a "least wins" arrangement, the actual individual boiler demand signal is limited and the output of the other boiler will be increased to compensate. If the operation of the limiting factors on both boilers means that the total demand cannot be met then after a time delay the demand signal in system 28 is reduced to meet the actual system operation condition. The temperature of the steam at the turbine throttle valve may be used to modify the response of the individual boilers to their own demand signal. The monitoring and control of the feedwater supply is described and also forms the subject of Specification 1,486,570. Details of the firing rate and reheat controls are given.
GB3846374A 1974-09-03 1974-09-03 Control system for a power producing unit Expired GB1486569A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3846374A GB1486569A (en) 1974-09-03 1974-09-03 Control system for a power producing unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3846374A GB1486569A (en) 1974-09-03 1974-09-03 Control system for a power producing unit

Publications (1)

Publication Number Publication Date
GB1486569A true GB1486569A (en) 1977-09-21

Family

ID=10403619

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3846374A Expired GB1486569A (en) 1974-09-03 1974-09-03 Control system for a power producing unit

Country Status (1)

Country Link
GB (1) GB1486569A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2169423A (en) * 1985-01-03 1986-07-09 Abco Technology Limited Power supply system
GB2176312A (en) * 1985-05-29 1986-12-17 York Int Ltd A heating and/or cooling system
CN102230615A (en) * 2011-06-20 2011-11-02 中国华能集团清洁能源技术研究院有限公司 Combined type flue gas residual heat comprehensive utilization system
CN104089269A (en) * 2014-06-11 2014-10-08 河北华电石家庄热电有限公司 Load distribution method for main-pipeline unit boiler in power station

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2169423A (en) * 1985-01-03 1986-07-09 Abco Technology Limited Power supply system
GB2176312A (en) * 1985-05-29 1986-12-17 York Int Ltd A heating and/or cooling system
GB2176312B (en) * 1985-05-29 1990-02-14 York Int Ltd A heating and/or cooling system
CN102230615A (en) * 2011-06-20 2011-11-02 中国华能集团清洁能源技术研究院有限公司 Combined type flue gas residual heat comprehensive utilization system
CN102230615B (en) * 2011-06-20 2013-02-13 中国华能集团清洁能源技术研究院有限公司 Combined type flue gas residual heat comprehensive utilization system
CN104089269A (en) * 2014-06-11 2014-10-08 河北华电石家庄热电有限公司 Load distribution method for main-pipeline unit boiler in power station
CN104089269B (en) * 2014-06-11 2016-02-03 河北华电石家庄热电有限公司 A kind of power station piping-main scheme unit boiler load distribution method

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee