JPS57212304A - Steam control valve - Google Patents

Steam control valve

Info

Publication number
JPS57212304A
JPS57212304A JP9651581A JP9651581A JPS57212304A JP S57212304 A JPS57212304 A JP S57212304A JP 9651581 A JP9651581 A JP 9651581A JP 9651581 A JP9651581 A JP 9651581A JP S57212304 A JPS57212304 A JP S57212304A
Authority
JP
Japan
Prior art keywords
ball bearing
seat
inclined surface
assembled
control valve
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
JP9651581A
Other languages
Japanese (ja)
Inventor
Hajime Hirano
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 JP9651581A priority Critical patent/JPS57212304A/en
Publication of JPS57212304A publication Critical patent/JPS57212304A/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)
  • Mechanically-Actuated Valves (AREA)

Abstract

PURPOSE:To prevent a lifting pin from being erroneously assembled into the titled valve by a method wherein in the structure of the steam control valve for controling the quantity of steam flowing into a steam turbine, a seat having an inclined surface is inserted into, or formed at, a part of an elliptical spot facing hole provided in a ball bearing insert section of a lever. CONSTITUTION:The seat 16 having inclined surface is inserted into, or molded by casting at, an elliptical hole 9a into which the ball bearing insert section 7 of a lever 9 is inserted. With the above structure, even when a lifting pin 11 is assembled aslant into the ball bearing as it comes into contact with a hole 12a in a lockhead 12, the pin 11 slides on the inclined surface of the seat 16 and is assembled correctly into the ball bearing 17 so that the inaccurate operation of the assembly is prevented and the reliability of the product is improved.
JP9651581A 1981-06-24 1981-06-24 Steam control valve Pending JPS57212304A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9651581A JPS57212304A (en) 1981-06-24 1981-06-24 Steam control valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9651581A JPS57212304A (en) 1981-06-24 1981-06-24 Steam control valve

Publications (1)

Publication Number Publication Date
JPS57212304A true JPS57212304A (en) 1982-12-27

Family

ID=14167270

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9651581A Pending JPS57212304A (en) 1981-06-24 1981-06-24 Steam control valve

Country Status (1)

Country Link
JP (1) JPS57212304A (en)

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