GB1296791A - - Google Patents

Info

Publication number
GB1296791A
GB1296791A GB1296791DA GB1296791A GB 1296791 A GB1296791 A GB 1296791A GB 1296791D A GB1296791D A GB 1296791DA GB 1296791 A GB1296791 A GB 1296791A
Authority
GB
United Kingdom
Prior art keywords
rings
roots
spacers
pins
blade
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
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 filed Critical
Publication of GB1296791A publication Critical patent/GB1296791A/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
    • F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/3069—Fixing blades to rotors; Blade roots ; Blade spacers between two discs or rings

Abstract

1296791 Turbomachine blade fixing BROWN BOVERI - SULZER TURBOMACHINERY Ltd 30 Nov 1970 [12 Dec 1969] 56722/70 Heading FIT A stator blade assembly for an axial flow turbine, compressor or pump comprises a row of angularly spaced blades 2 having roots 3 of generally square cross-section separated by spacers 8 and clamped between axially spaced rings 10, 11, the roots defining a saw-tooth outline when viewed in a radial direction. In the arrangement shown the faces of rings 10, 11 have a corresponding sawtooth outline. Thus to change the pitch angle of blades 2 it is only necessary to substitute rings 10, 11 having a different saw-tooth outline together with spacers 8 of different thickness. In a modification Fig. 6 (not shown) the root clamping means comprises rings (20, 21) into which are screwed round headed axially extending pins (22) bearing on the blade roots, pitch adjustment being effected by screwing the pins in or out and by replacement of the root spacers (86). In a further modification Fig.7 (not shown) the clamping means comprises rings (30, 31) carrying radially extending frustoconical pins (32) bearing on the blade roots.
GB1296791D 1969-12-12 1970-11-30 Expired GB1296791A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1850069A CH516731A (en) 1969-12-12 1969-12-12 Blade ring for turbo machines

Publications (1)

Publication Number Publication Date
GB1296791A true GB1296791A (en) 1972-11-15

Family

ID=4433408

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1296791D Expired GB1296791A (en) 1969-12-12 1970-11-30

Country Status (7)

Country Link
US (1) US3734645A (en)
BE (1) BE760151A (en)
CH (1) CH516731A (en)
DE (1) DE1963922C3 (en)
FR (1) FR2072221A5 (en)
GB (1) GB1296791A (en)
NL (1) NL7000530A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010002520A1 (en) * 2010-03-02 2011-09-08 Bernhard Unterlercher Turbine wheel with material and form-fitting connected blades

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1160529B (en) * 1983-03-09 1987-03-11 Cofimco Srl BLADE HOLDER HUB FOR AXIAL FAN
JP3034417B2 (en) * 1994-02-18 2000-04-17 株式会社東芝 Rotor blade control device for axial flow turbine
DE10014189A1 (en) * 2000-03-23 2001-09-27 Alstom Power Nv Blade fastening for rotating machinery has blades fitted in slots without play or with pretensioning so that torsional moments acting on inner platform or blade roots oppose torsional moments acting upon outer platform or support wing
US6929453B2 (en) * 2003-12-11 2005-08-16 Siemens Westinghouse Power Corporation Locking spacer assembly for slotted turbine component
EP1674734A1 (en) * 2004-12-21 2006-06-28 ALSTOM Technology Ltd Method for improving the flow stability of a turbo compressor
EP1707747A1 (en) * 2005-03-18 2006-10-04 Siemens Aktiengesellschaft Blade root fixation device and corresponding mounting method
US20090110553A1 (en) * 2007-10-30 2009-04-30 Min-I Wu Omnidirectional electric fan and fan blade structure

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US894659A (en) * 1906-12-29 1908-07-28 Gen Electric Bucket-wheel for turbines.
US1133191A (en) * 1913-11-29 1915-03-23 Hersey Staples Screw-propeller.
US1156529A (en) * 1914-06-10 1915-10-12 Gen Electric Turbine bucket-wheel.
US1590328A (en) * 1923-08-13 1926-06-29 Westinghouse Electric & Mfg Co Fastening means for turbine blading
FR863755A (en) * 1939-09-25 1941-04-09 Rateau Soc Impellers for turbo-machines
GB614074A (en) * 1946-07-02 1948-12-09 Aubrey Lawrence Collins Improvements in or relating to fans
DE872816C (en) * 1951-05-13 1953-04-09 Benno Schilde Maschb A G Hub for screw fan wheel
BE541578A (en) * 1953-05-27
NL207494A (en) * 1955-06-28
US2918255A (en) * 1957-03-15 1959-12-22 Westinghouse Electric Corp Elastic fluid utilizing apparatus
GB928349A (en) * 1960-12-06 1963-06-12 Rolls Royce Improvements in or relating to bladed rotors of fluid flow machines
US3088708A (en) * 1961-12-29 1963-05-07 Seymour J Feinberg Compressor blade locking device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010002520A1 (en) * 2010-03-02 2011-09-08 Bernhard Unterlercher Turbine wheel with material and form-fitting connected blades

Also Published As

Publication number Publication date
DE1963922A1 (en) 1971-06-24
NL7000530A (en) 1971-06-15
DE1963922B2 (en) 1972-06-22
US3734645A (en) 1973-05-22
DE1963922C3 (en) 1973-01-04
FR2072221A5 (en) 1971-09-24
BE760151A (en) 1971-06-10
CH516731A (en) 1971-12-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees