CH585343A5 - Turbine diffuser prodn. process - uses one:piece injector casting with vanes machined to fit between concentric rings - Google Patents

Turbine diffuser prodn. process - uses one:piece injector casting with vanes machined to fit between concentric rings

Info

Publication number
CH585343A5
CH585343A5 CH1341674A CH1341674A CH585343A5 CH 585343 A5 CH585343 A5 CH 585343A5 CH 1341674 A CH1341674 A CH 1341674A CH 1341674 A CH1341674 A CH 1341674A CH 585343 A5 CH585343 A5 CH 585343A5
Authority
CH
Switzerland
Prior art keywords
vanes
prodn
fit
concentric rings
diffuser
Prior art date
Application number
CH1341674A
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
Publication of CH585343A5 publication Critical patent/CH585343A5/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/006—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass turbine wheels
    • 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
    • F01D9/00—Stators
    • F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
    • F01D9/041—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector using blades

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Welding Or Cutting Using Electron Beams (AREA)

Abstract

The process produces the diffuser of a turbine by welding with a jet of electrons. One or more injectors are produced as one-piece castings comprising two concentric walls separated by a set of vanes (1). The external faces of the walls (3, 4) are machined to allow fitting the injector between two concentric rings forming the diffuser body (5, 6). Walls and rings are then welded together by electron jet. Each injector can consist of a number of identical sections, each a single casting with a number of vanes, and the rings can likewise comprise a number of sections. The steam passage of the injector can be inclined to the diffuser axis.
CH1341674A 1973-10-08 1974-10-07 Turbine diffuser prodn. process - uses one:piece injector casting with vanes machined to fit between concentric rings CH585343A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11234273A JPS5143982B2 (en) 1973-10-08 1973-10-08

Publications (1)

Publication Number Publication Date
CH585343A5 true CH585343A5 (en) 1977-02-28

Family

ID=14584274

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1341674A CH585343A5 (en) 1973-10-08 1974-10-07 Turbine diffuser prodn. process - uses one:piece injector casting with vanes machined to fit between concentric rings

Country Status (2)

Country Link
JP (1) JPS5143982B2 (en)
CH (1) CH585343A5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0197268A1 (en) * 1985-02-28 1986-10-15 BBC Brown Boveri AG Process for the manufacture of a regulating wheel for the high-pressure rotor of a steam turbine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4025229A (en) * 1975-11-14 1977-05-24 Turbodyne Corporation (Steam Turbine Div.) Diaphragm with cast nozzle blocks and method of construction thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0197268A1 (en) * 1985-02-28 1986-10-15 BBC Brown Boveri AG Process for the manufacture of a regulating wheel for the high-pressure rotor of a steam turbine

Also Published As

Publication number Publication date
JPS5075941A (en) 1975-06-21
JPS5143982B2 (en) 1976-11-25

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Legal Events

Date Code Title Description
PL Patent ceased
PL Patent ceased