US2038670A - Method of fixing turbine blades in place - Google Patents

Method of fixing turbine blades in place Download PDF

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Publication number
US2038670A
US2038670A US692176A US69217633A US2038670A US 2038670 A US2038670 A US 2038670A US 692176 A US692176 A US 692176A US 69217633 A US69217633 A US 69217633A US 2038670 A US2038670 A US 2038670A
Authority
US
United States
Prior art keywords
blade
place
fixing
blades
screwing
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 - Lifetime
Application number
US692176A
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English (en)
Inventor
Noack Walter Gustav
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.)
Firm Holzwarth Gasturbinen G M
FIRM HOLZWARTH GASTURBINEN GmbH
Original Assignee
Firm Holzwarth Gasturbinen G M
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 Firm Holzwarth Gasturbinen G M filed Critical Firm Holzwarth Gasturbinen G M
Application granted granted Critical
Publication of US2038670A publication Critical patent/US2038670A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/3023—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y10T29/4932—Turbomachine making
    • Y10T29/49321—Assembling individual fluid flow interacting members, e.g., blades, vanes, buckets, on rotary support member

Definitions

  • the blade must therefore consist, as has already been proposed, of at least two pieces, namely of the screw threaded blade 20 core, which takes up the peripheral and centrifugal forces, and of the blade edges which act as a guide for the jet of steam or gas. These are fixed either individually or as a complete unit 0 to the blade core, after the blade core has been screwed in.
  • the present invention relates to a method of fixing blades of a tried shape and pitch, which 'consist of a single piece only, but which can nevertheless be fixed by screwing in. It consists O in bending over, after the blade has been made, one or both blade edges, thereupon screwing the blades into the wheel or drum and finally bending the edges back again. By bending over the 35 edges the overall size of the blade is 'reduced to such an extent that the blade can be turned for screwing it in.
  • Fig. 1 shows a few blades according to the invention in section and elevation and Fig. 2 is a plan of the same portion of the rimwhen developed, the blades in this example being such as have only one edge turned over.
  • the blades are assembled one after the other from right to left, and in Figure 2 the blade 2, which has had its inlet edge turned over after manufacture, is 5 in a position for screwing in. After the blade has been screwed into place, theedge is bent into normal position, as shown in dotted lines for the blade 3.
  • a press is used, which effects the bending, back and smoothing out of the blade in several operations.
  • packing discs of diiferent thickness are provided, the selection of which is determined by experimental screwing in. 4 is a packing disc of this kind.
  • This method of fixing blades can be employed with advantage for cooled blades as well.
  • the steps which I" consist of reducing by deformation the dimensions of the blade referred to the axis of screwing, screwing the blade in, and restoring the blade to its former shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US692176A 1932-10-12 1933-10-04 Method of fixing turbine blades in place Expired - Lifetime US2038670A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE407627X 1932-10-12

Publications (1)

Publication Number Publication Date
US2038670A true US2038670A (en) 1936-04-28

Family

ID=6422197

Family Applications (1)

Application Number Title Priority Date Filing Date
US692176A Expired - Lifetime US2038670A (en) 1932-10-12 1933-10-04 Method of fixing turbine blades in place

Country Status (3)

Country Link
US (1) US2038670A (xx)
GB (1) GB407627A (xx)
NL (1) NL34363C (xx)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2430140A (en) * 1945-04-06 1947-11-04 Northrop Hendy Company Turbine blade and mounting
US2618120A (en) * 1946-06-07 1952-11-18 Papini Anthony Coaxial combustion products generator and turbine with cooling means
US2641440A (en) * 1947-11-18 1953-06-09 Chrysler Corp Turbine blade with cooling means and carrier therefor
US2657902A (en) * 1947-12-17 1953-11-03 Packard Motor Car Co Turbine rotor for turbojet engines
US2760255A (en) * 1951-05-26 1956-08-28 Charles E Compton Screw conveyor and manufacture thereof
US3357082A (en) * 1963-02-13 1967-12-12 Whiton Machine Company Method of making a turbine wheel
US7677870B1 (en) 2005-09-16 2010-03-16 Florida Turbine Techologies, Inc. Screw in blade/vane

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2430140A (en) * 1945-04-06 1947-11-04 Northrop Hendy Company Turbine blade and mounting
US2618120A (en) * 1946-06-07 1952-11-18 Papini Anthony Coaxial combustion products generator and turbine with cooling means
US2641440A (en) * 1947-11-18 1953-06-09 Chrysler Corp Turbine blade with cooling means and carrier therefor
US2657902A (en) * 1947-12-17 1953-11-03 Packard Motor Car Co Turbine rotor for turbojet engines
US2760255A (en) * 1951-05-26 1956-08-28 Charles E Compton Screw conveyor and manufacture thereof
US3357082A (en) * 1963-02-13 1967-12-12 Whiton Machine Company Method of making a turbine wheel
US7677870B1 (en) 2005-09-16 2010-03-16 Florida Turbine Techologies, Inc. Screw in blade/vane

Also Published As

Publication number Publication date
GB407627A (en) 1934-03-22
NL34363C (xx)

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