JPS57187716A - Method and device for level control - Google Patents

Method and device for level control

Info

Publication number
JPS57187716A
JPS57187716A JP7138281A JP7138281A JPS57187716A JP S57187716 A JPS57187716 A JP S57187716A JP 7138281 A JP7138281 A JP 7138281A JP 7138281 A JP7138281 A JP 7138281A JP S57187716 A JPS57187716 A JP S57187716A
Authority
JP
Japan
Prior art keywords
levels
level
pressure
deaerator
condenser
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.)
Pending
Application number
JP7138281A
Other languages
Japanese (ja)
Inventor
Tatsuo Imaizumi
Setsuo Nonaka
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
Priority to JP7138281A priority Critical patent/JPS57187716A/en
Publication of JPS57187716A publication Critical patent/JPS57187716A/en
Pending 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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating
    • F01K7/345—Control or safety-means particular thereto

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Non-Electrical Variables (AREA)

Abstract

PURPOSE:To control the level of a fluid for a container to the best level invariably without reference to operation conditions of a plant by giving priority levels to transportation destinations of the fluid according to the operation conditions. CONSTITUTION:In a large load region, three-way solenoid valves 53, 54 and 55 each provide conduction from the port A to C by the on signal of a pressure switch 51 and when a pressure switch 52 is turned on, on the other hand, a four-way solenoid valve 56 provides conduction from A to C and from B to D. Therefore, signals for control levels NWL, HNWL and DWL from level setting means 61, 62 and 63 are supplied as set levels to recording controllers 34, 35 and 36, which correspond to a deaerator, a low-pressure water feeding and heating device, and a condenser, through an operating device 67. Namely, the deaerator, low-pressure water feeding and heating device, and condenser are given priority in this order. As a plant load decreases, the pressure switches 51 and 52 turn off in order and the priority is changed accordingly.
JP7138281A 1981-05-14 1981-05-14 Method and device for level control Pending JPS57187716A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7138281A JPS57187716A (en) 1981-05-14 1981-05-14 Method and device for level control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7138281A JPS57187716A (en) 1981-05-14 1981-05-14 Method and device for level control

Publications (1)

Publication Number Publication Date
JPS57187716A true JPS57187716A (en) 1982-11-18

Family

ID=13458892

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7138281A Pending JPS57187716A (en) 1981-05-14 1981-05-14 Method and device for level control

Country Status (1)

Country Link
JP (1) JPS57187716A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56155305A (en) * 1980-05-01 1981-12-01 Tokyo Shibaura Electric Co Water level controller for drain tank of feed water heater

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56155305A (en) * 1980-05-01 1981-12-01 Tokyo Shibaura Electric Co Water level controller for drain tank of feed water heater

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