GB771715A - Improvements in or relating to automatic control systems for forced flow once through steam boilers - Google Patents

Improvements in or relating to automatic control systems for forced flow once through steam boilers

Info

Publication number
GB771715A
GB771715A GB19527/55A GB1952755A GB771715A GB 771715 A GB771715 A GB 771715A GB 19527/55 A GB19527/55 A GB 19527/55A GB 1952755 A GB1952755 A GB 1952755A GB 771715 A GB771715 A GB 771715A
Authority
GB
United Kingdom
Prior art keywords
load
boiler
regulator
temperature
stla
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
GB19527/55A
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.)
Siemens Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
Siemens AG
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 Siemens Schuckertwerke AG, Siemens AG filed Critical Siemens Schuckertwerke AG
Priority to GB19527/55A priority Critical patent/GB771715A/en
Publication of GB771715A publication Critical patent/GB771715A/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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22G—SUPERHEATING OF STEAM
    • F22G5/00—Controlling superheat temperature
    • F22G5/20—Controlling superheat temperature by combined controlling procedures

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

Abstract

771,715. Forced-flow steam boilers. SIEMENS-SCHUCKERTWERKE AKT.- GES. July 6, 1955 [July 12, 1954], No. 19527/55. Class 123(2) In a forced - flow once-through boiler comprising an economiser E, evaporating sections V<SP>1</SP>, V<SP>2</SP> and a superheater U wherein the regulators RK, RL,'RSP for the fuel, combustion air and feedwater respectively are adjusted by a device STLa in response to changes in boiler load, the device being controlled' by a pressure sensitive regulator RD which measures changes in the superheated steam outlet pressure P and wherein, to reduce the time lag between a change in load and the corresponding regulator adjustments, the feed water regulator RSP is also controlled to maintain a predetermined temperature at a point T in the boiler tube system, the coritrol temperature at T is adjusted according to the prevailing load on the boiler in a compensating device RT operatively connected to the load controlled device STLa as indicated by line ta. Thus for example, when the pressure P increases, the device STLa sets the regulators for a smaller load and the control temperature at T increases to allow for the fact that the evaporating zone is displaced towards the boiler inlet. If the temperature at T differs from the new control temperature, a supplementary adjustment of the feed regulator is then made.
GB19527/55A 1955-07-06 1955-07-06 Improvements in or relating to automatic control systems for forced flow once through steam boilers Expired GB771715A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB19527/55A GB771715A (en) 1955-07-06 1955-07-06 Improvements in or relating to automatic control systems for forced flow once through steam boilers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB19527/55A GB771715A (en) 1955-07-06 1955-07-06 Improvements in or relating to automatic control systems for forced flow once through steam boilers

Publications (1)

Publication Number Publication Date
GB771715A true GB771715A (en) 1957-04-03

Family

ID=6679368

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19527/55A Expired GB771715A (en) 1955-07-06 1955-07-06 Improvements in or relating to automatic control systems for forced flow once through steam boilers

Country Status (1)

Country Link
GB (1) GB771715A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125073A (en) * 1964-03-17 Profos
US3244898A (en) * 1959-12-29 1966-04-05 Combustion Eng Power plant system and control therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125073A (en) * 1964-03-17 Profos
US3244898A (en) * 1959-12-29 1966-04-05 Combustion Eng Power plant system and control therefor

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