JPS57188705A - Steam turbine - Google Patents

Steam turbine

Info

Publication number
JPS57188705A
JPS57188705A JP7314581A JP7314581A JPS57188705A JP S57188705 A JPS57188705 A JP S57188705A JP 7314581 A JP7314581 A JP 7314581A JP 7314581 A JP7314581 A JP 7314581A JP S57188705 A JPS57188705 A JP S57188705A
Authority
JP
Japan
Prior art keywords
steam
flow
regulator valve
requlator
valves
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
JP7314581A
Other languages
Japanese (ja)
Inventor
Hiromasa Ichikawa
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 JP7314581A priority Critical patent/JPS57188705A/en
Publication of JPS57188705A publication Critical patent/JPS57188705A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/141—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path
    • F01D17/145—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path by means of valves, e.g. for steam turbines

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)

Abstract

PURPOSE:To becrease the throttle volume of each steam regulator valve so as to improve efficiency of speed governing steps by arranging a control valve system to be characterized in its flow characteristics curve of smooth S-letter, while being equipped with a cam mechanism which controls opening and closing of the plural number of steam requlator valves. CONSTITUTION:A steam flow characteristic curve IV, indicating the relation between steam flow of each steam regulator valve 1-4 and a cam angle of a control valve system equipped with a cam mechanism, is formed in a gentle S-shaped characteristic curve IV. For the rated flow ranging from 5-15% to 70-90%, the set value of speed gradient is assigned to 2.5-5.0%, while for the rated flow of more than 70-90%, said value is gradually increased up to the range 7.0-12.0%. Since the lift of each steam regulator valve 1-4 can thus be inclined forward, the lift of a valve 3, for example, can be increased from the conventional point A to a point B. Accordingly, throttle volume of all steam requlator valves 1-4 is reduced and the efficiency of speed governing steps may be improved.
JP7314581A 1981-05-15 1981-05-15 Steam turbine Pending JPS57188705A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7314581A JPS57188705A (en) 1981-05-15 1981-05-15 Steam turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7314581A JPS57188705A (en) 1981-05-15 1981-05-15 Steam turbine

Publications (1)

Publication Number Publication Date
JPS57188705A true JPS57188705A (en) 1982-11-19

Family

ID=13509731

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7314581A Pending JPS57188705A (en) 1981-05-15 1981-05-15 Steam turbine

Country Status (1)

Country Link
JP (1) JPS57188705A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1191190A1 (en) * 2000-09-20 2002-03-27 Siemens Aktiengesellschaft Method for regulating a steam turbine and steam turbine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1191190A1 (en) * 2000-09-20 2002-03-27 Siemens Aktiengesellschaft Method for regulating a steam turbine and steam turbine
WO2002025067A1 (en) * 2000-09-20 2002-03-28 Siemens Aktiengesellschaft Method for regulating a steam turbine, and corresponding steam turbine

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