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JPS57124010A - Method of detecting abnormality of steam power plant - Google Patents

Method of detecting abnormality of steam power plant

Info

Publication number
JPS57124010A
JPS57124010A JP905581A JP905581A JPS57124010A JP S57124010 A JPS57124010 A JP S57124010A JP 905581 A JP905581 A JP 905581A JP 905581 A JP905581 A JP 905581A JP S57124010 A JPS57124010 A JP S57124010A
Authority
JP
Japan
Prior art keywords
temperature
drop
extraction
turbine
check valve
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.)
Granted
Application number
JP905581A
Other languages
Japanese (ja)
Other versions
JPS6160961B2 (en
Inventor
Mikio Okada
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 JP905581A priority Critical patent/JPS57124010A/en
Publication of JPS57124010A publication Critical patent/JPS57124010A/en
Publication of JPS6160961B2 publication Critical patent/JPS6160961B2/ja
Granted 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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating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 Turbines (AREA)

Abstract

PURPOSE:To early detect the abnormality of an extraction check valve for a steam turbine, by finding out the temperature between the extraction check valve and the turbine and comparing the temperature with normal data stored in a computer. CONSTITUTION:Receiving a turbine stop signal 16, a detector 13 finds out the temperature of extraction. Temperature data for a prescribed time are obtained to determine the temperature-drop characteristic, which is compared with a reference temperature-drop characteristic previously stored in a computer 14. When an extraction valve 9 is normal, the ratio between passed time and the drop DELTATa in the temperature of extraction during the stoppage of a turbine is approximate to that between passed time and the reference temperature drop DELTATb. When the extraction check valve 9 is abnormal, the ratio between passed time and the temperature drop DELTATa' is greatly different from that between passed time and the reference temperature drop DELTATb. Therefore, the abnormality of the valve 9 can be detected by comparison.
JP905581A 1981-01-26 1981-01-26 Method of detecting abnormality of steam power plant Granted JPS57124010A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP905581A JPS57124010A (en) 1981-01-26 1981-01-26 Method of detecting abnormality of steam power plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP905581A JPS57124010A (en) 1981-01-26 1981-01-26 Method of detecting abnormality of steam power plant

Publications (2)

Publication Number Publication Date
JPS57124010A true JPS57124010A (en) 1982-08-02
JPS6160961B2 JPS6160961B2 (en) 1986-12-23

Family

ID=11709939

Family Applications (1)

Application Number Title Priority Date Filing Date
JP905581A Granted JPS57124010A (en) 1981-01-26 1981-01-26 Method of detecting abnormality of steam power plant

Country Status (1)

Country Link
JP (1) JPS57124010A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07332606A (en) * 1994-06-02 1995-12-22 Miura Co Ltd Method for detecting abnormality of check valve in water feed line of boiler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07332606A (en) * 1994-06-02 1995-12-22 Miura Co Ltd Method for detecting abnormality of check valve in water feed line of boiler

Also Published As

Publication number Publication date
JPS6160961B2 (en) 1986-12-23

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