JPS5759006A - Water level controller - Google Patents

Water level controller

Info

Publication number
JPS5759006A
JPS5759006A JP13552280A JP13552280A JPS5759006A JP S5759006 A JPS5759006 A JP S5759006A JP 13552280 A JP13552280 A JP 13552280A JP 13552280 A JP13552280 A JP 13552280A JP S5759006 A JPS5759006 A JP S5759006A
Authority
JP
Japan
Prior art keywords
water level
drain tank
controlling valve
operated
rate
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
JP13552280A
Other languages
Japanese (ja)
Inventor
Shigeru Suzuki
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 JP13552280A priority Critical patent/JPS5759006A/en
Publication of JPS5759006A publication Critical patent/JPS5759006A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To maintain always stably water level in a drain tank of a moisture separator for a turbine in an atomic power plant or the like by changing over operation from normal to emergency running mode system in response to the rate of water level variation in the drain tank and altering control constant for a controlling valve.
CONSTITUTION: A controlling valve 22 is controlled by a control calculation program setter 14 for controlling water level in a tank to a predetermined value.A mode switch 13 is operated on the basis of a judging circuit 12 for judging that the output of a rate-of-variation calculating circuit 11 exceeds the set range, so as to change over operation from normal operation mode system 15 to emergency one 16. Further, the controlling valve 22 is operated by altering target set value SV and PID constant. Thus, the water level in the drain tank can be always stably maintained.
COPYRIGHT: (C)1982,JPO&Japio
JP13552280A 1980-09-29 1980-09-29 Water level controller Pending JPS5759006A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13552280A JPS5759006A (en) 1980-09-29 1980-09-29 Water level controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13552280A JPS5759006A (en) 1980-09-29 1980-09-29 Water level controller

Publications (1)

Publication Number Publication Date
JPS5759006A true JPS5759006A (en) 1982-04-09

Family

ID=15153728

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13552280A Pending JPS5759006A (en) 1980-09-29 1980-09-29 Water level controller

Country Status (1)

Country Link
JP (1) JPS5759006A (en)

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