JPS57188719A - Guide bushing for steam valve - Google Patents

Guide bushing for steam valve

Info

Publication number
JPS57188719A
JPS57188719A JP7138581A JP7138581A JPS57188719A JP S57188719 A JPS57188719 A JP S57188719A JP 7138581 A JP7138581 A JP 7138581A JP 7138581 A JP7138581 A JP 7138581A JP S57188719 A JPS57188719 A JP S57188719A
Authority
JP
Japan
Prior art keywords
guide bushing
steam valve
bushing
prevented
wear
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.)
Granted
Application number
JP7138581A
Other languages
Japanese (ja)
Other versions
JPS6239641B2 (en
Inventor
Isao Fujita
Naohiko Iwata
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 JP7138581A priority Critical patent/JPS57188719A/en
Priority to AU83538/82A priority patent/AU8353882A/en
Publication of JPS57188719A publication Critical patent/JPS57188719A/en
Publication of JPS6239641B2 publication Critical patent/JPS6239641B2/ja
Granted 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
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/08—Valves guides; Sealing of valve stem, e.g. sealing by lubricant

Landscapes

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

Abstract

PURPOSE:To aim at improving the reliablity and durability of a guide bushing by forming a surface layer of heat resisting and wear resisting hard alloy consisting of, as a main component, cobalt or nickel, on the inner surface of the bushing to which a valve stem is slidably contacted, so that the generation of scale is prevented. CONSTITUTION:A surface layer of heat resisting and wear resisting alloy consisting of, as a main component, cobalt or nickel, is formed on the inner surface of a guide bushing 13 in a steam valve. With this arrangement, the generation of scale in the guide bushing 13 is prevented and as well the sticking of a valve stem 2 is prevented beforehand. Further, the wear of the guide bushing 13 is reduced. Thereby the reliability and durability of the guide part of the steam valve is improved.
JP7138581A 1981-05-14 1981-05-14 Guide bushing for steam valve Granted JPS57188719A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP7138581A JPS57188719A (en) 1981-05-14 1981-05-14 Guide bushing for steam valve
AU83538/82A AU8353882A (en) 1981-05-14 1982-05-10 Steam valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7138581A JPS57188719A (en) 1981-05-14 1981-05-14 Guide bushing for steam valve

Publications (2)

Publication Number Publication Date
JPS57188719A true JPS57188719A (en) 1982-11-19
JPS6239641B2 JPS6239641B2 (en) 1987-08-24

Family

ID=13458986

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7138581A Granted JPS57188719A (en) 1981-05-14 1981-05-14 Guide bushing for steam valve

Country Status (2)

Country Link
JP (1) JPS57188719A (en)
AU (1) AU8353882A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5973085B2 (en) * 2014-02-19 2016-08-23 三菱重工コンプレッサ株式会社 Steam valve and steam turbine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5973085B2 (en) * 2014-02-19 2016-08-23 三菱重工コンプレッサ株式会社 Steam valve and steam turbine
US9777843B2 (en) 2014-02-19 2017-10-03 Mitsubishi Heavy Industries Compressor Corporation Steam valve and steam turbine

Also Published As

Publication number Publication date
AU8353882A (en) 1982-11-25
JPS6239641B2 (en) 1987-08-24

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