JPS5750024A - Advance water-level controller for hygroscopic moisture separator drain tank - Google Patents

Advance water-level controller for hygroscopic moisture separator drain tank

Info

Publication number
JPS5750024A
JPS5750024A JP12458480A JP12458480A JPS5750024A JP S5750024 A JPS5750024 A JP S5750024A JP 12458480 A JP12458480 A JP 12458480A JP 12458480 A JP12458480 A JP 12458480A JP S5750024 A JPS5750024 A JP S5750024A
Authority
JP
Japan
Prior art keywords
drain tank
level
water
signal generator
control 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.)
Pending
Application number
JP12458480A
Other languages
Japanese (ja)
Inventor
Kazuyuki Sugaya
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 JP12458480A priority Critical patent/JPS5750024A/en
Publication of JPS5750024A publication Critical patent/JPS5750024A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
    • G05D9/12—Level control, e.g. controlling quantity of material stored in vessel characterised by the use of electric means

Abstract

PURPOSE:To continue the normal operation of a plant by evading the level rise of a drain tank, by forcibly opening a control valve by a signal generator in case of a transient state such as a sudden change in plant load. CONSTITUTION:A drain tank level is detected by a water-level transmitter 2 and then compared with a setpoint by a deviation operator 3 to input the extent of deviation to a PID operator 4. On the basis of a PID operation output, a water- level control valve is operated to hold the drain tank level constant. In case of a transient state, such as a sudden change in plant load, a switch 6 is changed over to a signal generator 5 side, and the signal generator 5 exercises advance control over the water-level control valve 5.
JP12458480A 1980-09-10 1980-09-10 Advance water-level controller for hygroscopic moisture separator drain tank Pending JPS5750024A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12458480A JPS5750024A (en) 1980-09-10 1980-09-10 Advance water-level controller for hygroscopic moisture separator drain tank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12458480A JPS5750024A (en) 1980-09-10 1980-09-10 Advance water-level controller for hygroscopic moisture separator drain tank

Publications (1)

Publication Number Publication Date
JPS5750024A true JPS5750024A (en) 1982-03-24

Family

ID=14889076

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12458480A Pending JPS5750024A (en) 1980-09-10 1980-09-10 Advance water-level controller for hygroscopic moisture separator drain tank

Country Status (1)

Country Link
JP (1) JPS5750024A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58165105A (en) * 1982-03-26 1983-09-30 Toshiba Corp Process controller

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58165105A (en) * 1982-03-26 1983-09-30 Toshiba Corp Process controller
JPH0245201B2 (en) * 1982-03-26 1990-10-08 Tokyo Shibaura Electric Co

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