US2528305A - Turbomachine blading construction - Google Patents

Turbomachine blading construction Download PDF

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Publication number
US2528305A
US2528305A US723587A US72358747A US2528305A US 2528305 A US2528305 A US 2528305A US 723587 A US723587 A US 723587A US 72358747 A US72358747 A US 72358747A US 2528305 A US2528305 A US 2528305A
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US
United States
Prior art keywords
blade
widening
groove
construction
carrier
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
US723587A
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English (en)
Inventor
Gubler Theodor
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.)
Sulzer AG
Original Assignee
Sulzer AG
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 Sulzer AG filed Critical Sulzer AG
Application granted granted Critical
Publication of US2528305A publication Critical patent/US2528305A/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
    • F01D5/303—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses in a circumferential slot
    • F01D5/3038—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses in a circumferential slot the slot having inwardly directed abutment faces on both sides
    • 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
    • F01D5/32—Locking, e.g. by final locking blades or keys

Definitions

  • This invention relates to turbomachines having blade carriers, especially high-speed rotors, in which the blade feet are inserted into grooves. each groove having at least one insertion position formed by a lateral widening of the groove.
  • the invention is characterized in that the locking means closing that widening is subdivided in the longitudinal direction of the groove into several parts, each of which is inserted separately through an additional widening. That additional widening may be provided on the blade foot itself or in the wall of the blade insertion position on the carrier.
  • FIG. 1-6 Two embodiments of the subject matter of the invention are illustrated by way of example in Figs. 1-6.
  • the additional widening is in the blade foot; in the second example, Figs. 4-6, in the wall of the blade insertion position.
  • the feet 2 of the blades I are introduced into the groove 3 of a blade carrier, for instance a turbine or compressor casing or runner.
  • Groove 3 may be straight, circular. or helical according to the overall design of the turbomachine without affecting the application to it of this invention.
  • groove 3 has a blade insertion position 4 which is formed by a lateral widening of the groove. This widening extends longitudinally of the groove 3 for a distance which exceeds the similar length of a blade foot only by a slight amount.
  • a closing blade 5 is inserted, whose foot 8 differs from the feet of the other blades in that it is somewhat set back on the side toward the groove widening.
  • multi-membered locking means are inserted, subdivided in the longitudinal direction of the blade groove 3 into five parts, 1 and 8.
  • the locking parts I are introduced into the widening of the groove at the blade insertion position 4.
  • the final locking part 8 is then introduced into the additional widening.
  • the additional widening is provided at 9 in the foot 8 of the closing blade 8.
  • all parts 1 of the locking means (which may be provided with extension pieces III, as indicated by dash-dotted lines, to make them easier to handle) have been inserted through the additional widening 9 into the blade insertion opening I, the final locking part 8 is inserted into the additional widening 8 and secured against falling out by a closing pin ll.
  • the additional widening is provided at ii in the wall of the blade insertion position on the carrier itself.
  • a hole is drilled and tapped with a screw thread along the joint :between the blade carrier and the locking part 8 and into it a retaining screw it is inserted.
  • the retaining screw I4 is secured against falling out by peening round the edge of the screw.
  • a turbomachine having a blade carrier and a continuous row of discrete blade elements carried by said carrier.
  • construction for attaching said blade elements to said carrier including feet on said blade elements having supporting surfaces formed on the sides thereof, a continuous groove in said carrier having supporting surfaces Iormed on the sides thereof conjugate to the supporting surfaces on said feet, a blade insertion opening in said groove whereby said feet may be introduced into said groove and moved longitudinally thereof with said conjugate supporting surfaces in mutual engagement to fill said groove except for the position of said opening, said blade insertion opening having supporting surfaces formed on the sides thereof, a closing blade element for introduction into said :blade insertion opening for completing the row of blade elements, said closing blade element having a foot smaller than said blade insertion opening and with supporting surfaces formed on the sides thereof, a plurality of locking parts which have the cross section of the space formed between a side of said closing blade element foot and a.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US723587A 1946-05-04 1947-01-22 Turbomachine blading construction Expired - Lifetime US2528305A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH623335X 1946-05-04

Publications (1)

Publication Number Publication Date
US2528305A true US2528305A (en) 1950-10-31

Family

ID=4524230

Family Applications (1)

Application Number Title Priority Date Filing Date
US723587A Expired - Lifetime US2528305A (en) 1946-05-04 1947-01-22 Turbomachine blading construction

Country Status (6)

Country Link
US (1) US2528305A (enrdf_load_stackoverflow)
CH (1) CH250729A (enrdf_load_stackoverflow)
DE (1) DE841753C (enrdf_load_stackoverflow)
FR (1) FR944755A (enrdf_load_stackoverflow)
GB (1) GB623335A (enrdf_load_stackoverflow)
NL (1) NL64087C (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3627448A (en) * 1969-12-31 1971-12-14 Westinghouse Electric Corp Locking arrangement for side-entry blades
US20070297908A1 (en) * 2006-06-23 2007-12-27 Siemens Power Generation, Inc. Turbine rotor blade groove entry slot lock structure
WO2013102591A1 (de) * 2012-01-03 2013-07-11 Siemens Aktiengesellschaft Befestigung einer schlossschaufel an einer rotoreinheit
CN103470307A (zh) * 2012-06-06 2013-12-25 通用电气公司 带有盲孔的涡轮转子和叶片组件
US20140363300A1 (en) * 2013-06-11 2014-12-11 General Electric Company Closure bucket for turbo-machine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1040047B (de) * 1954-12-23 1958-10-02 Maschf Augsburg Nuernberg Ag Befestigung der Schlussschaufel eines Laufrades fuer Axial-Kreiselmaschinen
NL252407A (enrdf_load_stackoverflow) * 1960-05-09 1900-01-01
NL295111A (enrdf_load_stackoverflow) * 1962-07-11
DE102008048261B4 (de) 2008-09-22 2017-04-06 Siemens Aktiengesellschaft Axialturbomaschinenrotor mit einem Schaufelschloss und Verfahren zum Herstellen desselben

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US875646A (en) * 1907-05-27 1907-12-31 Allis Chalmers Blade-fastening.
US1303004A (en) * 1919-05-06 l alois
US1829881A (en) * 1930-04-05 1931-11-03 Allis Chalmers Mfg Co Turbine blade mounting
US2393447A (en) * 1944-05-20 1946-01-22 Allis Chalmers Mfg Co Turbine blade locking apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1303004A (en) * 1919-05-06 l alois
US875646A (en) * 1907-05-27 1907-12-31 Allis Chalmers Blade-fastening.
US1829881A (en) * 1930-04-05 1931-11-03 Allis Chalmers Mfg Co Turbine blade mounting
US2393447A (en) * 1944-05-20 1946-01-22 Allis Chalmers Mfg Co Turbine blade locking apparatus

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3627448A (en) * 1969-12-31 1971-12-14 Westinghouse Electric Corp Locking arrangement for side-entry blades
US20070297908A1 (en) * 2006-06-23 2007-12-27 Siemens Power Generation, Inc. Turbine rotor blade groove entry slot lock structure
WO2008013610A1 (en) * 2006-06-23 2008-01-31 Siemens Energy, Inc Turbine rotor blade groove entry slot lock structure
US7901187B2 (en) 2006-06-23 2011-03-08 Siemens Energy, Inc. Turbine rotor blade groove entry slot lock structure
WO2013102591A1 (de) * 2012-01-03 2013-07-11 Siemens Aktiengesellschaft Befestigung einer schlossschaufel an einer rotoreinheit
CN103470307A (zh) * 2012-06-06 2013-12-25 通用电气公司 带有盲孔的涡轮转子和叶片组件
US20140363300A1 (en) * 2013-06-11 2014-12-11 General Electric Company Closure bucket for turbo-machine
US9366146B2 (en) * 2013-06-11 2016-06-14 General Electric Company Closure bucket for turbo-machine

Also Published As

Publication number Publication date
GB623335A (en) 1949-05-16
NL64087C (enrdf_load_stackoverflow) 1900-01-01
CH250729A (de) 1947-09-15
DE841753C (de) 1952-06-19
FR944755A (fr) 1949-04-14

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