JPS6483803A - Structure for arranging steam stationary blade - Google Patents

Structure for arranging steam stationary blade

Info

Publication number
JPS6483803A
JPS6483803A JP23873387A JP23873387A JPS6483803A JP S6483803 A JPS6483803 A JP S6483803A JP 23873387 A JP23873387 A JP 23873387A JP 23873387 A JP23873387 A JP 23873387A JP S6483803 A JPS6483803 A JP S6483803A
Authority
JP
Japan
Prior art keywords
turbine
steam
valve
vicinity
partial feed
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
JP23873387A
Other languages
Japanese (ja)
Inventor
Takeshi Sato
Takeshi Onoda
Kazuo Ikeuchi
Ryoichi Kaneko
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 JP23873387A priority Critical patent/JPS6483803A/en
Publication of JPS6483803A publication Critical patent/JPS6483803A/en
Pending legal-status Critical Current

Links

Landscapes

  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

PURPOSE:To promote the reduction of fluctuating force acting on a moving blade by forming a stationary blade smaller in its outflow angle in the vicinity of an inlet boundary in a partial feed stage while larger in the vicinity of an outlet boundary, in case of the partial feed stage feeding stems from one part of the total periphery in an annular stationary blade cascade. CONSTITUTION:A steam turbine introduces steam from a boiler to a turbine steam inlet part through two or more control valves (No.1 valve-No.2 valve), and an inflow of the steam to the turbine is placed in a partial feed condition (figure shows condition with only No.1 valve fully opened) in accordance with opening and closing the control valve. A gate valve 1011, dividing the total periphery corresponding to each control valve, is provided in the turbine steam inlet part. In case of the steam turbine thus obtained, in order to reduce the generation of large fluctuating force acting on a moving blade 13, the turbine forms a stationary blade 12 to be decreased in its outflow angle in the vicinity of an inlet boundary 14 in a partial feed part, while increased in the vicinity of an outlet boundary 15 in the partial feed part.
JP23873387A 1987-09-25 1987-09-25 Structure for arranging steam stationary blade Pending JPS6483803A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23873387A JPS6483803A (en) 1987-09-25 1987-09-25 Structure for arranging steam stationary blade

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23873387A JPS6483803A (en) 1987-09-25 1987-09-25 Structure for arranging steam stationary blade

Publications (1)

Publication Number Publication Date
JPS6483803A true JPS6483803A (en) 1989-03-29

Family

ID=17034449

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23873387A Pending JPS6483803A (en) 1987-09-25 1987-09-25 Structure for arranging steam stationary blade

Country Status (1)

Country Link
JP (1) JPS6483803A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2044747A2 (en) * 1990-06-07 1994-01-01 Westinghouse Electric Corp Control stage nozzle vane for use in partial arc operation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2044747A2 (en) * 1990-06-07 1994-01-01 Westinghouse Electric Corp Control stage nozzle vane for use in partial arc operation

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