AT76502B - Blade attachment for steam and gas turbines. - Google Patents

Blade attachment for steam and gas turbines.

Info

Publication number
AT76502B
AT76502B AT76502DA AT76502B AT 76502 B AT76502 B AT 76502B AT 76502D A AT76502D A AT 76502DA AT 76502 B AT76502 B AT 76502B
Authority
AT
Austria
Prior art keywords
steam
gas turbines
blade
blade attachment
blades
Prior art date
Application number
Other languages
German (de)
Original Assignee
Erste Bruenner Maschinen Fab
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 Erste Bruenner Maschinen Fab filed Critical Erste Bruenner Maschinen Fab
Application granted granted Critical
Publication of AT76502B publication Critical patent/AT76502B/en

Links

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
    • F01D5/3023Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses
    • F01D5/303Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses in a circumferential slot
    • F01D5/3038Fixing 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

Description

  

   <Desc/Clms Page number 1> 
 



    Schaufelbefestigung     tür   Dampf- und Gasturbinen. 



   Gegenstand der Erfindung ist eine neue Befestigungsart von Schaufeln bei Dampf- und Gasturbinen, welche die Schaufeln der Turbinen sicher vor jedweder Lockerung oder Loslösung   befall   da ihre Wirkung um so kräftiger wird, je stärker die Schaufeln durch die Fliehkraft beansprucht werden. 



   Dieser Effekt wird durch die besondere Ausgestaltung der in der Nute der Trommel liegenden Schaufelfusse und eine gleichartige Gestaltung der infolge der Verstemmung die untersten Teile der Schaufelfüsse klemmenden Stemmstücke erreicht, indem durch eine knieförmige Kröpfung der Schaufelfüsse und eine gleichartige Gestaltung der Stemmstücke solche Kraftkomponenten herbeigeführt werden, welche die Intensität der Anpressung der Schaufeln an die   anschliessenden   Stemmstücke in demselben Grade steigern, als die Fliehkraftwirkung zunimmt. 



   Der wesentliche Unterschied zwischen dieser Schaufelbefestigung und den bisher be-   kannten Schaufelverstemmungsarten   und somit der durch den Erfindungsgegenstand herbei- 
 EMI1.1 
 sicherheit bei allen Schaufelverbindungen einzig und allein abhängt, nicht nur wesentlich vereinfach, sondern die Schaufelbefestigung auch in so hohem Masse gesichert wird, dass Schaufelbeschädigungen ausgeschlossen werden. 



   Ein weiterer Vorteil der vorliegenden Befestigungsart besteht darin, dass bei derselben der volle Querschnitt der Schaufeln erhalten bleibt, im Gegensatze zu anderen Befestigungen, bei welchen die Schaufeln am Fusse. also gerade im   gefährlichsten Querschnitte, durch Etn-   schnitte, Kerben oder dgl. wesentlich   geschwächt   sind. 



   In der Zeichnung zeigt Fig. 1 die perspektivische Ansicht der entsprechend ausgebildeten   Schaufel, Fig. 3   die perspektivische Ansicht eines Stemmstückes, Fig. 3 und 4 sind senkrechte Schnitte durch die Schaufel und die Stemmstücke, Fig. 5 zeigt einen Schnitt nah der 
 EMI1.2 
 



   Der in die Nute n der Tremmel r einzusetzende Fuss f der Schaufel s und die   Stemm-     stücke (besitzen   eine gekröpfte Form und es ist das Ruckenprofil der letzteren mit jenem der   Schaufeln vollkommen kongruent. Die Kröpfungen können wie dargestellt bes@haffen sein oder es können die Schaufeü'uCe und Stemmstücke mehrfache Kröpfungen aufweisen.   



   Die Stemmstücke können entweder aus einem Stücke hergestellt werden (Fig. 3) oder aber (und zwar vorteilhaft am Sehe tel der Knieform) geteilt sein (Fig. 4). Dieselben sind beider- 
 EMI1.3 
 stücke (t) gleichmässig anpressen. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



    Blade attachment for steam and gas turbines.



   The subject of the invention is a new type of attachment of blades in steam and gas turbines, which infects the blades of the turbines securely from any loosening or detachment because their effect becomes stronger the more the blades are subjected to centrifugal force.



   This effect is achieved by the special design of the blade roots lying in the groove of the drum and a similar design of the caulking pieces that clamp the lowest parts of the blade roots as a result of the caulking, in that such force components are brought about by a knee-shaped offset of the blade roots and a similar design of the caulking pieces, which increase the intensity of the pressure of the blades on the adjoining chisel pieces to the same extent as the centrifugal force increases.



   The essential difference between this blade attachment and the previously known types of blade caulking and thus the one brought about by the subject of the invention
 EMI1.1
 The only thing that depends on the safety of all blade connections is not only significantly simplified, but the blade fastening is also secured to such an extent that blade damage is excluded.



   Another advantage of the present type of attachment is that it retains the full cross section of the blades, in contrast to other attachments in which the blades are at the base. that is, especially in the most dangerous cross-section, through cuts, notches or the like. Are significantly weakened.



   In the drawing, Fig. 1 shows the perspective view of the correspondingly designed blade, Fig. 3 shows the perspective view of a caulking piece, Figs. 3 and 4 are vertical sections through the blade and the caulking pieces, Fig. 5 shows a section close to the
 EMI1.2
 



   The foot f of the shovel s to be inserted into the groove n of the trembling r and the chisels (have a cranked shape and the back profile of the latter is completely congruent with that of the shovels the Schaufeü'uCe and chisels have multiple offsets.



   The caulking pieces can either be made from one piece (Fig. 3) or (and advantageously at the Sehe tel the knee shape) be divided (Fig. 4). The same are both-
 EMI1.3
 Press pieces (t) evenly.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

2. Stemm- oder Zwischenstücke zur Schaufelbefestigung für Dampf- und Gasturbinen nach Anspruch 1, dadurch gekennzeichnet, dass sie geteilt sind (Fig. 4). **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. 2. caulking or spacers for fastening the blades for steam and gas turbines according to claim 1, characterized in that they are divided (Fig. 4). ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT76502D 1914-02-12 1914-02-12 Blade attachment for steam and gas turbines. AT76502B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT76502T 1914-02-12
US493123A US1476626A (en) 1914-02-12 1921-08-17 Means for fastening the blades of steam and gas turbines

Publications (1)

Publication Number Publication Date
AT76502B true AT76502B (en) 1919-05-26

Family

ID=23958992

Family Applications (1)

Application Number Title Priority Date Filing Date
AT76502D AT76502B (en) 1914-02-12 1914-02-12 Blade attachment for steam and gas turbines.

Country Status (5)

Country Link
US (1) US1476626A (en)
AT (1) AT76502B (en)
DE (1) DE315943C (en)
FR (1) FR516377A (en)
GB (1) GB115231A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1016503B (en) * 1955-02-26 1957-09-26 Armstrong Siddeley Motors Ltd Internally cooled gas turbine blade

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1005530B (en) * 1955-06-23 1957-04-04 Paul Miesbeck Fastening of the rotor blades of centrifugal machines, in particular steam and gas turbines
EP1028231B1 (en) * 1999-02-12 2003-09-03 ALSTOM (Switzerland) Ltd Fastening of turbomachine rotor blades
EP1674734A1 (en) * 2004-12-21 2006-06-28 ALSTOM Technology Ltd Method for improving the flow stability of a turbo compressor
WO2014190008A1 (en) * 2013-05-23 2014-11-27 General Electric Company Composite compressor blade and method of assembling

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1016503B (en) * 1955-02-26 1957-09-26 Armstrong Siddeley Motors Ltd Internally cooled gas turbine blade

Also Published As

Publication number Publication date
FR516377A (en) 1921-04-18
DE315943C (en) 1919-11-17
US1476626A (en) 1923-12-04
GB115231A (en) 1921-01-13

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