US754984A - Detachable blade for steam-turbines. - Google Patents

Detachable blade for steam-turbines. Download PDF

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Publication number
US754984A
US754984A US15059403A US1903150594A US754984A US 754984 A US754984 A US 754984A US 15059403 A US15059403 A US 15059403A US 1903150594 A US1903150594 A US 1903150594A US 754984 A US754984 A US 754984A
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United States
Prior art keywords
steam
wheel
turbines
stems
slits
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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 - Lifetime
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US15059403A
Inventor
Ernst Elis Fridolf Fagerstroem
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Priority to US15059403A priority Critical patent/US754984A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/30Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/32Locking, e.g. by final locking blades or keys
    • F01D5/323Locking of axial insertion type blades by means of a key or the like parallel to the axis of the rotor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/30Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/32Locking, e.g. by final locking blades or keys
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/30Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/3007Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00Application
    • F05D2220/30Application in turbines
    • F05D2220/31Application in turbines in steam turbines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00Manufacture
    • F05D2230/50Building or constructing in particular ways
    • F05D2230/54Building or constructing in particular ways by sheet metal manufacturing

Definitions

  • Th is invention relates to a peculiar construction of steam or vapor turbines for the purpose of fixing the metal vanes of such vaporturbines firmly to the wheel, so that they will withstand high rate of revolutions.
  • Fig. 1 is a cross-section of a portion thereof
  • Figs. 3, 4 are cross-sections illustrating modified arrangements of the invention.
  • the metal-sheet vanes a which may be of varying forms, are inserted by means of their stems into the transversal and radial or approximately radial grooves or slits Z) of the turbine-wheel, said grooves or slits being provided with one or more channels or enlargements 0, Figs. 1, 2, 3, passing transversely through the wheel e at a distance from the ends of the slits.
  • These channels or enlargements may be of any convenient cr0sssectionfor instance, cylindrical, Fig. 2, or tapering, Fig. 3.
  • pins or wedges are likewise used for securing the stems inserted in the slits 6, these, however, not being provided with channels passing transversely through the wheel a, but the wheel instead being on each side provided with an annular groove f and each vane having two apertures, Figs. 1, I, made therein at the part thereof adjoining the groove in the wheel-rim on the insertion of the vane.
  • short wedges or pins g or pieces of metal plate are inserted for securing the vane.
  • the turbine-wheel is provided at its circumference with recesses 75, shaped to suit the curved or tapering part of each vane, the latter bearing on the walls of said recesses and being thus prevented from bending under the influence of the driving fluid.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Description

No. 754,984. PATENTED MAR. 22, 1904.
B. E. P. FAGERSTRUM.
DETAGHABLE BLADE FOR STEAM TURBINES.
APPLICATION FILED APR. 1, 1903.
UNITED STATES Patented March 22, 1964.
PATENT OEEic-E.
DETACHABLE BLADE FOR STEAM-TURBINES- SPECIFICATION forming part of Letters Patent No. 754,984, dated March 22, 1904.
Application filed April 1, 1903. Serial No. 150,594. (No model.)
To all whom it may concern: Be it known that'I, ERNST ELrs FRIDOLF FA- GERs'rROM, a subject of the King of Sweden and Norway, and a resident of Sundbyberg, in the county of Upland, in the Kingdom of Sweden, have invented certain new and useful Improvements in Detachable Blades for Steam-Turbines, of which the following is a specification.
Th is invention relates to a peculiar construction of steam or vapor turbines for the purpose of fixing the metal vanes of such vaporturbines firmly to the wheel, so that they will withstand high rate of revolutions.
In the accompanying drawings a plan view and partial horizontal section of a portion of such a turbine-wheel is illustrated in Fig. 1. Fig. 2 is a cross-section of a portion thereof, and Figs. 3, 4 are cross-sections illustrating modified arrangements of the invention.
The metal-sheet vanes a, which may be of varying forms, are inserted by means of their stems into the transversal and radial or approximately radial grooves or slits Z) of the turbine-wheel, said grooves or slits being provided with one or more channels or enlargements 0, Figs. 1, 2, 3, passing transversely through the wheel e at a distance from the ends of the slits. These channels or enlargements may be of any convenient cr0sssectionfor instance, cylindrical, Fig. 2, or tapering, Fig. 3. On inserting the stems of the vanes from one side into the slits alternatively after previously bending them to suit the enlargements of the slits pins or wedges (Z are driven through the said channels or enlargements, the vanes being thereby secured so firmly that they cannot be thrown out when the wheel rotates.
In the modified arrangement shown in Fig. 4. pins or wedges are likewise used for securing the stems inserted in the slits 6, these, however, not being provided with channels passing transversely through the wheel a, but the wheel instead being on each side provided with an annular groove f and each vane having two apertures, Figs. 1, I, made therein at the part thereof adjoining the groove in the wheel-rim on the insertion of the vane. In these apertures short wedges or pins g or pieces of metal plate are inserted for securing the vane.
In order to provide good support for the vanes, the turbine-wheel is provided at its circumference with recesses 75, shaped to suit the curved or tapering part of each vane, the latter bearing on the walls of said recesses and being thus prevented from bending under the influence of the driving fluid.
Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is- 1. In a steam or water turbine the combination of a wheel with transversal, radial slits or grooves, metal-sheet vanes inserted with their flat sheet-metal stems therein, and pins for securing the said stems in the wheel, said pins engaging the said stems directly.
2. In a steam or water turbine the combination of a wheel with transversal, radial slits or the stems against the wheel.
'3. In a steam or water turbine the combination of a wheel with transversal, radial slits or grooves, metal-sheet vanes, inserted with their flat stems therein, apertures in the said stems, near their edges, grooves at theouter surfaces of the wheel and pins inserted through the apertures in each stem and with their ends resting in the grooves.
In witness whereof I have hereunto set my hand in presence of two witnesses.
ERNST ELIS FRIDOLF .FAGERSTRGM. Witnesses:
H. TELANDER, T. RIsBERe.
US15059403A 1903-04-01 1903-04-01 Detachable blade for steam-turbines. Expired - Lifetime US754984A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15059403A US754984A (en) 1903-04-01 1903-04-01 Detachable blade for steam-turbines.

Applications Claiming Priority (1)

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US15059403A US754984A (en) 1903-04-01 1903-04-01 Detachable blade for steam-turbines.

Publications (1)

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US754984A true US754984A (en) 1904-03-22

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2656146A (en) * 1948-04-08 1953-10-20 Curtiss Wright Corp Turbine blade construction
US2658718A (en) * 1944-12-22 1953-11-10 Power Jets Res & Dev Ltd Manufacture and attachment of turbine and like blading

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2658718A (en) * 1944-12-22 1953-11-10 Power Jets Res & Dev Ltd Manufacture and attachment of turbine and like blading
US2656146A (en) * 1948-04-08 1953-10-20 Curtiss Wright Corp Turbine blade construction

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