JPS562404A - Steam turbine control method - Google Patents

Steam turbine control method

Info

Publication number
JPS562404A
JPS562404A JP7681379A JP7681379A JPS562404A JP S562404 A JPS562404 A JP S562404A JP 7681379 A JP7681379 A JP 7681379A JP 7681379 A JP7681379 A JP 7681379A JP S562404 A JPS562404 A JP S562404A
Authority
JP
Japan
Prior art keywords
steam
nozzle
flow
high pressure
plural
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
JP7681379A
Other languages
Japanese (ja)
Inventor
Motonari Haraguchi
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 JP7681379A priority Critical patent/JPS562404A/en
Publication of JPS562404A publication Critical patent/JPS562404A/en
Pending legal-status Critical Current

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  • Control Of Turbines (AREA)

Abstract

PURPOSE: To reduce throttling pressure drops of a steam control valve by controlling a steam flow rate in the nozzles of a turbine and generator sides with other steam control valves where the high pressure first stage nozzle is provided for a plural flow while all the other nozzle ends are provided for a single flow.
CONSTITUTION: A high temperature and high pressure steam flow from a boiler is branched to steam lines 31 and 32 through a main choke valve and controlled by 4 sets of steam control valves 33W36, 37W40 respectively, and introduced into a plural flow nozzle box 49. The plural flow nozzle box 49 is provided with a turbine nozzle 50 of the high pressure first stage and a generator nozzle 51. The nozzles 50 and 51 are devided into a plural steam chambers F1 through I and J through M. The above-stated steam is injected into revolving blades 16 and 17 from nozzles 52 and 53. Then the steam flowing in the direction of S and S' is introduced into the high pressure second stage and rotates a rotor 23, doing work. The above method can reduce throttling pressure drops during partial load, and enhance the internal efficiency.
COPYRIGHT: (C)1981,JPO&Japio
JP7681379A 1979-06-20 1979-06-20 Steam turbine control method Pending JPS562404A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7681379A JPS562404A (en) 1979-06-20 1979-06-20 Steam turbine control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7681379A JPS562404A (en) 1979-06-20 1979-06-20 Steam turbine control method

Publications (1)

Publication Number Publication Date
JPS562404A true JPS562404A (en) 1981-01-12

Family

ID=13616103

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7681379A Pending JPS562404A (en) 1979-06-20 1979-06-20 Steam turbine control method

Country Status (1)

Country Link
JP (1) JPS562404A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103244203A (en) * 2013-05-21 2013-08-14 国家电网公司 Throttle valve system and working method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103244203A (en) * 2013-05-21 2013-08-14 国家电网公司 Throttle valve system and working method thereof

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