JPS54130703A - Feed-water controller - Google Patents

Feed-water controller

Info

Publication number
JPS54130703A
JPS54130703A JP3774878A JP3774878A JPS54130703A JP S54130703 A JPS54130703 A JP S54130703A JP 3774878 A JP3774878 A JP 3774878A JP 3774878 A JP3774878 A JP 3774878A JP S54130703 A JPS54130703 A JP S54130703A
Authority
JP
Japan
Prior art keywords
speed
adjusting valve
feedwater
feed water
revolution
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
JP3774878A
Other languages
Japanese (ja)
Inventor
Motoyuki Sato
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP3774878A priority Critical patent/JPS54130703A/en
Publication of JPS54130703A publication Critical patent/JPS54130703A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To safely operate a feed water pump in a voltage transformation shape, by automatically changing over the control of said pump and adjusting valves by automatically discriminating the modes of a safety operation range and a critical speed range when feeding water by means of the feed water pump that the safety operation speed range is limited.
CONSTITUTION: When a command signal of the speed of revolution becomes not more than limit value, a first feedwater adjusting valve 61 is operated in the circumferential direction by means of a feedwater adjusting valve control portion 15 while a second feedwater adjusting valve 62 interlocked with said valve 61 is perfectly closed. If the capacity of the adjusting valve 61 is selected not less than a flow rate discharged from a feed water pump 4 in the speed limit at that time, the variation of a feed water flow rate due to the opening and closing of the adjusting valve 62 approximately becomes extinct. When the command signal of the speed of revolution is not more than limit value, the speed of the revolution of a feedwater turbine becomes constant, and the adjusting valve 61 is controlled. When the signal returns not less than limit value, the adjusting valves 61, 62 are perfectly opened and shifts to the control of the speed of the pump, and smoothly changed over.
COPYRIGHT: (C)1979,JPO&Japio
JP3774878A 1978-03-31 1978-03-31 Feed-water controller Pending JPS54130703A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3774878A JPS54130703A (en) 1978-03-31 1978-03-31 Feed-water controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3774878A JPS54130703A (en) 1978-03-31 1978-03-31 Feed-water controller

Publications (1)

Publication Number Publication Date
JPS54130703A true JPS54130703A (en) 1979-10-11

Family

ID=12506090

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3774878A Pending JPS54130703A (en) 1978-03-31 1978-03-31 Feed-water controller

Country Status (1)

Country Link
JP (1) JPS54130703A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5946404A (en) * 1982-09-10 1984-03-15 株式会社東芝 Feedwater controller

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5946404A (en) * 1982-09-10 1984-03-15 株式会社東芝 Feedwater controller
JPH0229922B2 (en) * 1982-09-10 1990-07-03 Tokyo Shibaura Electric Co

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