JPS56504A - Automatic valve switching circuit for steam turbine - Google Patents

Automatic valve switching circuit for steam turbine

Info

Publication number
JPS56504A
JPS56504A JP7583679A JP7583679A JPS56504A JP S56504 A JPS56504 A JP S56504A JP 7583679 A JP7583679 A JP 7583679A JP 7583679 A JP7583679 A JP 7583679A JP S56504 A JPS56504 A JP S56504A
Authority
JP
Japan
Prior art keywords
valve
opened
turbine
valve switching
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
JP7583679A
Other languages
Japanese (ja)
Inventor
Suketsugu Kabayama
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP7583679A priority Critical patent/JPS56504A/en
Publication of JPS56504A publication Critical patent/JPS56504A/en
Pending legal-status Critical Current

Links

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  • Control Of Turbines (AREA)

Abstract

PURPOSE: To enable to effect a valve switchihg without causing an output fluctuation of a generator by a method wherein an output of the generator is detected and is compared with a preset valve switching load signal while a valve controlling portion is controlled automatically by a deviation signal thereof.
CONSTITUTION: When a turbine 5 is actuated until a valve switching load, a contact 18 is opened. On the other hand, steam regulating valves 3, 4 of the turbine 5 are fully opened until the valve switching load and the turbine is controlled by a main steam stop valve 2, therefore, an outlet side steam pressure of the valve 2 becomes lower than an inlet side steam pressure thereof and a pressure difference detector 13 is operated, thereby, contacts 13a, 13b are closed and the same 13c is opened. Accordingly, a closing signal is input into a valve controller 8 and the steam regulating valve 4, 3 are choked in their openings gradually. When the openings thereof become conditions corresponding to the valve switching loads, a pressure difference between fore and aft of the valve 2 is decreased and a detecting pressure of the pressure difference detector 13 becomes lower than a preset value, the contacts 13a, 13b are opened and the same 13c is closed, consequently, the valve 2 is fully opened by the valve controller 7.
COPYRIGHT: (C)1981,JPO&Japio
JP7583679A 1979-06-13 1979-06-13 Automatic valve switching circuit for steam turbine Pending JPS56504A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7583679A JPS56504A (en) 1979-06-13 1979-06-13 Automatic valve switching circuit for steam turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7583679A JPS56504A (en) 1979-06-13 1979-06-13 Automatic valve switching circuit for steam turbine

Publications (1)

Publication Number Publication Date
JPS56504A true JPS56504A (en) 1981-01-07

Family

ID=13587668

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7583679A Pending JPS56504A (en) 1979-06-13 1979-06-13 Automatic valve switching circuit for steam turbine

Country Status (1)

Country Link
JP (1) JPS56504A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014227915A (en) * 2013-05-22 2014-12-08 株式会社日立製作所 Turbine control device and turbine control method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014227915A (en) * 2013-05-22 2014-12-08 株式会社日立製作所 Turbine control device and turbine control method

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