JPS5692306A - Main steam pressure controlling system for turbine - Google Patents

Main steam pressure controlling system for turbine

Info

Publication number
JPS5692306A
JPS5692306A JP16921279A JP16921279A JPS5692306A JP S5692306 A JPS5692306 A JP S5692306A JP 16921279 A JP16921279 A JP 16921279A JP 16921279 A JP16921279 A JP 16921279A JP S5692306 A JPS5692306 A JP S5692306A
Authority
JP
Japan
Prior art keywords
control valve
main control
controller
deviation
pressure
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
JP16921279A
Other languages
Japanese (ja)
Inventor
Eiichi Okuma
Yukio Inaba
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 JP16921279A priority Critical patent/JPS5692306A/en
Publication of JPS5692306A publication Critical patent/JPS5692306A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent excessive reducing of the opening of a main control valve, by operating a main steam control valve only in case that the main steam pressure is lower than a predetermined value and the pressure lowering speed is higher than a predetermined value, and reducing the opening of the main control valve continuously until the pressure drop is stopped.
CONSTITUTION: A main steam pressure controlling system 13 is applied in a main control system for a turbine which consists of an arithmetic means 3 for calculating the deviation between a setting load value and the signal of an actual load and a speed-load controlling means 5 operated by a controller 4 in response to the output of the means 3. The control system 13 comprises an arithmetic means 8 for calculating the deviation between a setting pressure value and an actual pressure, an IPR controller 9 afforded with the deviation signal from the arithmetic means 8 and produces a main control valve closing signal, and an arithmetic means 10 for producing a main control valve opening signal after operation of the IPR controller 9 by calculating the deviation between the output of the controller 9 and that of the controlling means 5. In the system 13, there are further provided a lower limiter 11 for preventing that the main control valve is closed excessively circuit 12 for comparing the output of the lower limiter 11 and that of the controlling means 5.
COPYRIGHT: (C)1981,JPO&Japio
JP16921279A 1979-12-27 1979-12-27 Main steam pressure controlling system for turbine Pending JPS5692306A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16921279A JPS5692306A (en) 1979-12-27 1979-12-27 Main steam pressure controlling system for turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16921279A JPS5692306A (en) 1979-12-27 1979-12-27 Main steam pressure controlling system for turbine

Publications (1)

Publication Number Publication Date
JPS5692306A true JPS5692306A (en) 1981-07-27

Family

ID=15882275

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16921279A Pending JPS5692306A (en) 1979-12-27 1979-12-27 Main steam pressure controlling system for turbine

Country Status (1)

Country Link
JP (1) JPS5692306A (en)

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