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DE818442C - Fastening of blades, especially made of ceramic materials, for rotary machines - Google Patents

Fastening of blades, especially made of ceramic materials, for rotary machines

Info

Publication number
DE818442C
DE818442C DEP3020A DEP0003020A DE818442C DE 818442 C DE818442 C DE 818442C DE P3020 A DEP3020 A DE P3020A DE P0003020 A DEP0003020 A DE P0003020A DE 818442 C DE818442 C DE 818442C
Authority
DE
Germany
Prior art keywords
blades
fastening
especially made
ceramic materials
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
DEP3020A
Other languages
German (de)
Inventor
Christian Dipl-Ing Schoerner
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.)
MAN AG
Original Assignee
MAN Maschinenfabrik Augsburg Nuernberg 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 MAN Maschinenfabrik Augsburg Nuernberg AG filed Critical MAN Maschinenfabrik Augsburg Nuernberg AG
Priority to DEP3020A priority Critical patent/DE818442C/en
Application granted granted Critical
Publication of DE818442C publication Critical patent/DE818442C/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
    • F01D5/3084—Fixing blades to rotors; Blade roots ; Blade spacers the blades being made of ceramics

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Description

Die Erfindung betrifft die Befestigung von Schaufeln, insbesondere aus keramischem Werkstoff für Kreiselradmaschinen. Die Verwendung keramischer Massen als Werkstoff bei Gasturbinen gestattet ohne besondere Bauteilkühlung die Beaufschlagung durch hohe Gastemperaturen. Auch für die Halterung von Keramikschaufeln in Stahlbauteilen ist durch die Anwendung von besonders gearteten kegeligen oder keilförmigen Sitzflächen trotz der verschiedenen Wärmedehnungen ein aussichtsreicher Weg angegeben worden. Der Doppelkegelsitz am Schaufelfuß zur selbsttätigen wärmebeweglichen Halterung von Schaufeln in Ringnuten läßt sich aber nicht ohne weiteres für alle Läufer und Leitapparate verwenden, insbesondere nicht, wenn es sich um mehrkränzige Läufer und Leitschaufelträger aus einem Stück handelt.The invention relates to the attachment of blades, in particular made of ceramic material for centrifugal machines. The use of ceramic bodies As a material in gas turbines, it can be applied without any special component cooling due to high gas temperatures. Also for holding ceramic blades in steel components is due to the use of specially designed conical or wedge-shaped seat surfaces despite the various thermal expansions, a promising route has been indicated. The double cone seat on the blade foot for an automatic heat-flexible mounting blades in ring grooves cannot be easily used for all runners and Use nozzles, especially not if the runners have multiple rings and guide vane carrier in one piece.

Nach der Erfindung wird die Anwendung des Doppelkegelsitzes an den Schaufelfüßen auch für die genannten Schaufelträger dadurch ermöglicht, daß in den die Schaufelfüße aufnehmenden Bauteilen die eine Seite der Gegenflächen als feste Ringnutwände ausgebildet sind, während die auf der anderen Seite der Mittelebene des Schaufelkranzes liegenden Sitzflächen besonderen Profilsegmenten angehören, die in bekannter Weise eingestemmt oder eingeschweißt sind.According to the invention, the application of the double cone seat to the Blade feet also made possible for said blade carrier in that in the the components receiving the blade roots one side of the mating surfaces as fixed Ring groove walls are formed, while those on the other side of the central plane the seat surfaces of the blade ring belong to special profile segments, which are caulked or welded in in a known manner.

In der Zeichnung ist ein Ausführungsbeispiel einer Schaufelbefestigung nach der Erfindung in einem zweikraniigen Läufer im Schnitt dargestellt.In the drawing is an embodiment of a blade attachment according to the invention shown in a double-crane runner in section.

Die Ringnut im Läufer i ist nur an einer Seite mit den entsprechenden Kegelsitzflächen 2 und 3 versehen und die Nut selbst so ausgebildet, daß eine ausreichende Zugänglichkeit bei der Bearbeitung gewährleistet ist. Die Sitzflächen 4 und 5 auf der anderen Seite der Schaufelkranzmittelebene sind in einem Beilagesegment 6 vereinigt, das durch ein bogenförmiges Keilstück 7 besonders eingeklemmt wird. Das Keilstück 7 stützt sich auf ein in der Ringnut eingelegtes ebenfalls bogenförmiges Stemmsegment 8 ab. Das obere Ende des Stemmsegmentes 7 wird durch Kaltverformung über die Oberkante des Keilstückes 7 gelegt und kann dort zusätzlich verschweißt werden. Die Segmente 7 und 8 sind aus entsprechend aufgeschnittenen Ringen gebildet.The annular groove in the rotor i is only on one side with the corresponding Conical seat surfaces 2 and 3 provided and the groove itself formed so that a sufficient Accessibility during processing is guaranteed. The seats 4 and 5 on the other side of the blade ring center plane are combined in a shim segment 6, which is particularly clamped by an arcuate wedge 7. The wedge 7 is based on an arcuate stem segment that is also inserted in the annular groove 8 from. The upper end of the stem segment 7 is cold deformed over the upper edge of the wedge 7 placed and can also be welded there. The segments 7 and 8 are formed from rings cut open accordingly.

Claims (1)

PATENTANSPRUCH: Befestigung von Schaufeln, insbesondere aus keramischem Werkstoff in Kreiselradmaschinen mit als gegeneinandergerichtete Kegelsitzflächenpaare oder Keilflächen ausgebildeten Fußsitzflächen, dadurch gekennzeichnet, daß in den die Schaufelfüße aufnehmenden Bauteilen (i) die eine Seite der Gegenflächen (2, 3) als feste Ringnutwände ausgebildet sind, während die auf der anderen Seite der Mittelebene des Schaufelkranzes liegenden Sitzflächen (4, 5) besonderen Profilsegmenten (6) angehören, die in bekannter Weise eingestemmt oder angeschweißt sind.PATENT CLAIM: Fastening of blades, especially made of ceramic Material in centrifugal machines with as oppositely directed pairs of conical seat surfaces or wedge surfaces formed foot seat surfaces, characterized in that in the the components receiving the blade roots (i) one side of the mating surfaces (2, 3) are designed as fixed ring groove walls, while those on the other side of the Center plane of the blade ring lying seat surfaces (4, 5) special profile segments (6) that are caulked or welded in a known manner.
DEP3020A 1948-10-02 1948-10-02 Fastening of blades, especially made of ceramic materials, for rotary machines Expired DE818442C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP3020A DE818442C (en) 1948-10-02 1948-10-02 Fastening of blades, especially made of ceramic materials, for rotary machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP3020A DE818442C (en) 1948-10-02 1948-10-02 Fastening of blades, especially made of ceramic materials, for rotary machines

Publications (1)

Publication Number Publication Date
DE818442C true DE818442C (en) 1951-10-25

Family

ID=7358404

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP3020A Expired DE818442C (en) 1948-10-02 1948-10-02 Fastening of blades, especially made of ceramic materials, for rotary machines

Country Status (1)

Country Link
DE (1) DE818442C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE919802C (en) * 1952-09-06 1954-11-04 Maschf Augsburg Nuernberg Ag Device for fastening rotor blades for centrifugal machines with axial flow
DE1016982B (en) * 1953-07-06 1957-10-03 Power Jets Res & Dev Ltd Runner with cooling device for flow machines operated with gaseous equipment, in particular gas turbines
FR2996251A1 (en) * 2012-09-28 2014-04-04 Snecma SELF-TENSIONING ATTACHMENT FOR TURBINE BLADE IN CMC

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE919802C (en) * 1952-09-06 1954-11-04 Maschf Augsburg Nuernberg Ag Device for fastening rotor blades for centrifugal machines with axial flow
DE1016982B (en) * 1953-07-06 1957-10-03 Power Jets Res & Dev Ltd Runner with cooling device for flow machines operated with gaseous equipment, in particular gas turbines
FR2996251A1 (en) * 2012-09-28 2014-04-04 Snecma SELF-TENSIONING ATTACHMENT FOR TURBINE BLADE IN CMC
WO2014049280A3 (en) * 2012-09-28 2014-09-12 Snecma Self-clamping fastener for cmc turbine blade
CN104685162A (en) * 2012-09-28 2015-06-03 斯奈克玛 Self-clamping fastener for CMC turbine blade
JP2015530518A (en) * 2012-09-28 2015-10-15 スネクマ Self-fixing fasteners for CMC turbine blades
CN104685162B (en) * 2012-09-28 2017-04-12 斯奈克玛 self-clamping fastener for CMC turbine blade
US10227881B2 (en) 2012-09-28 2019-03-12 Safran Aircraft Engines Self-clamping fastener for CMC turbine blade

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