GB612838A - Improvements in or relating to moving blades for elastic fluid turbines - Google Patents

Improvements in or relating to moving blades for elastic fluid turbines

Info

Publication number
GB612838A
GB612838A GB9841/46A GB984146A GB612838A GB 612838 A GB612838 A GB 612838A GB 9841/46 A GB9841/46 A GB 9841/46A GB 984146 A GB984146 A GB 984146A GB 612838 A GB612838 A GB 612838A
Authority
GB
United Kingdom
Prior art keywords
blades
per cent
blade
root
tip
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.)
Expired
Application number
GB9841/46A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB612838A publication Critical patent/GB612838A/en
Expired 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
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/141—Shape, i.e. outer, aerodynamic form

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

612,838. Turbine blades. LYSHOLM, A. March 29, 1946, No. 9841. Convention date, April 4, 1945. Drawings to Specification. [Class 110 (iii)] A moving blade for an elastic-fluid turbine is made hollow, has a rounded inlet edge and is formed so that the outlet angle decreases from the root to the tip. The turbine rotor blades are formed from a blank of sheet-metal which has its greatest thickness at the edge corresponding to the root of the blade. The blank is bent over a suitably shaped tool, then given the desired streamline shape and twisted so that the outlet angle decreases from the root to the tip. The length of the blade exceeds. 10 per cent and preferably amounts to 20 or 30 per cent of the mean diameter of the blade ring. The degree of reaction at the mean diameter may be 50 or 60 per cent and increase towards the tip of the blades where it may amount to 75 per cent. Due to the high degree of reaction the pitch of the blades-may be large and the total number of blades may be 60 or preferably less, i.e. between 30 and 50. The blades may be fastened to the rotor by electric butt-welding or flash-welding in which a current of high intensity and extremely short duration is passed between the parts to be welded so that only the abutting portions of the material are heated to the welding temperature.
GB9841/46A 1945-04-04 1946-03-29 Improvements in or relating to moving blades for elastic fluid turbines Expired GB612838A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE612838X 1945-04-04

Publications (1)

Publication Number Publication Date
GB612838A true GB612838A (en) 1948-11-18

Family

ID=20313098

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9841/46A Expired GB612838A (en) 1945-04-04 1946-03-29 Improvements in or relating to moving blades for elastic fluid turbines

Country Status (1)

Country Link
GB (1) GB612838A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3135496A (en) * 1962-03-02 1964-06-02 Gen Electric Axial flow turbine with radial temperature gradient
GB2207191A (en) * 1987-07-06 1989-01-25 Gen Electric Gas turbine engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3135496A (en) * 1962-03-02 1964-06-02 Gen Electric Axial flow turbine with radial temperature gradient
GB2207191A (en) * 1987-07-06 1989-01-25 Gen Electric Gas turbine engine
US4809498A (en) * 1987-07-06 1989-03-07 General Electric Company Gas turbine engine
GB2207191B (en) * 1987-07-06 1992-03-04 Gen Electric Gas turbine engine

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