GB1055989A - Method of starting through-flow type boiler plants - Google Patents

Method of starting through-flow type boiler plants

Info

Publication number
GB1055989A
GB1055989A GB47538/63A GB4753863A GB1055989A GB 1055989 A GB1055989 A GB 1055989A GB 47538/63 A GB47538/63 A GB 47538/63A GB 4753863 A GB4753863 A GB 4753863A GB 1055989 A GB1055989 A GB 1055989A
Authority
GB
United Kingdom
Prior art keywords
pass
valve
flow
starting
fuel flow
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
GB47538/63A
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of GB1055989A publication Critical patent/GB1055989A/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
    • F22B35/14—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)

Abstract

1,055,989. Starting forced flow boilers. HITACHI Ltd. Dec. 2, 1963 [Dec. 4, 1962], No. 47538/63. Heading F4A. A method of starting a through flow type boiler plant comprises decreasing the fuel flow rate when the fluid pressure upstream of the heating sections exceeds a predetermined value thereby reducing by-pass flows and permitting the size of by-pass circuits to be kept to a minimum. The plant comprises a feed pump 1, Fig. 1 (not shown), supplying water from a deaerator 14 to a boiler 2 and a superheater 3 from which vapour passes through a turbine 1] to a condenser 12, a feed water heater may be provided before the pump. Superheater and turbine by-pass circuits containing pressure relief valve 5 and turbine by-pass valve 7 respectively lead to a flash tank 8 which is connected to a condenser by steam and water lines 18, 19. During starting only part of the fluid is vaporized whilst the unvaporized water, as it is forced through the system causes the pressure to rise and opens valve 5, through which it then flows. To reduce the maximum by-pass flow, the fuel flow rate to the boiler is reduced as the by-pass flow increases by controlling the fuel flow valve 16 in accordance with signals indicating the opening of valve 5. As the by-pass flow decreases and valve 5 closes, the normal fuel flow is restored.
GB47538/63A 1962-12-04 1963-12-02 Method of starting through-flow type boiler plants Expired GB1055989A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5365862 1962-12-04

Publications (1)

Publication Number Publication Date
GB1055989A true GB1055989A (en) 1967-01-25

Family

ID=12948944

Family Applications (1)

Application Number Title Priority Date Filing Date
GB47538/63A Expired GB1055989A (en) 1962-12-04 1963-12-02 Method of starting through-flow type boiler plants

Country Status (3)

Country Link
US (1) US3240187A (en)
DE (1) DE1248677B (en)
GB (1) GB1055989A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3747338A (en) * 1970-10-06 1973-07-24 County Commercial Cars Ltd Power plant

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104089276A (en) * 2014-06-24 2014-10-08 首钢京唐钢铁联合有限责任公司 Multi-stage flash treatment system utilizing exhaust gas and circulating cooling water

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2900792A (en) * 1955-06-04 1959-08-25 Sulzer Ag Steam power plant having a forced flow steam generator
GB879032A (en) * 1956-12-08 1961-10-04 Duerrwerke Ag A method of starting-up and closing-down a once-through forced-flow, vapour generating and superheating unit, and such a unit
US3035557A (en) * 1959-07-23 1962-05-22 Sulzer Ag Method of cooling resuperheaters of a steam plant
US3055181A (en) * 1960-06-23 1962-09-25 Combustion Eng Method of operating a power plant system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3747338A (en) * 1970-10-06 1973-07-24 County Commercial Cars Ltd Power plant

Also Published As

Publication number Publication date
DE1248677B (en) 1967-08-31
US3240187A (en) 1966-03-15

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