FR2484530A1 - BLOCKING AGAINST THE AXIAL SHIFTING OF THE PINS IN THE BOREHOLE OF THE SPACERS FOR FASTENING MOBILE FINS WITH A BREAK OF AXIAL STEAM TURBINES - Google Patents
BLOCKING AGAINST THE AXIAL SHIFTING OF THE PINS IN THE BOREHOLE OF THE SPACERS FOR FASTENING MOBILE FINS WITH A BREAK OF AXIAL STEAM TURBINES Download PDFInfo
- Publication number
- FR2484530A1 FR2484530A1 FR8025038A FR8025038A FR2484530A1 FR 2484530 A1 FR2484530 A1 FR 2484530A1 FR 8025038 A FR8025038 A FR 8025038A FR 8025038 A FR8025038 A FR 8025038A FR 2484530 A1 FR2484530 A1 FR 2484530A1
- Authority
- FR
- France
- Prior art keywords
- axial
- balls
- pins
- spacers
- pin
- 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.)
- Granted
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
- F01D5/3053—Fixing blades to rotors; Blade roots ; Blade spacers by means of pins
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)
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
Abstract
LE BUT EST DE CREER UNE LIAISON ENTRE LES BROCHES 3 ET LES ENTRETOISES EXTERIEURES 2 DU DISQUE DE ROUE, RESISTANT AUX SOLLICITATIONS QUI APPARAISSENT, EFFICACE DANS LES DEUX DIRECTIONS AXIALES. SELON L'INVENTION CHACUNE DES BROCHES COMPORTE SOIT UNE, SOIT DEUX LIAISONS A RAINURES CIRCULAIRES 5BILLES 4, CHAQUE PAIRE DE RAINURES CIRCULAIRES RECEVANT LES BILLES ETANT DISPOSEE SUR LE POURTOUR DE LA BROCHE ET DE LA PAROI DE L'ALESAGE CORRESPONDANT.THE PURPOSE IS TO CREATE A CONNECTION BETWEEN PIN 3 AND OUTER SPACERS 2 OF THE WHEEL DISC, RESISTANT TO THE STRESSES THAT APPEAR, EFFECTIVE IN BOTH AXIAL DIRECTIONS. DEPENDING ON THE INVENTION EACH OF THE SPINDLES INCLUDES EITHER ONE OR TWO CIRCULAR GROOVED LINKS 5 BALLS 4, EACH PAIR OF CIRCULAR GROOVES RECEIVING THE BALLS BEING ARRANGED ON THE PERIOD OF THE SPINDLE AND OF THE WALL OF THE CORRESPONDING BALL.
Description
L'invention se rapporte à un dispositif de blocage contre le décalageThe invention relates to a blocking device against the offset
axial des broches dans les alésages des entretoises de la tête du disque de roue et des enfourchements axial of the pins in the bores of the spacers of the head of the wheel disk and the struts
d'ailettes mobiles de turbines à vapeur axiales et similaires. mobile blades of axial steam turbines and the like.
On connaît des blocages axiaux de ce type, ou les broches sont rivées. Le rivetage a certes maintes fois fait ses preuves, mais pour les broches plus grandes, il y a des difficultés, dues notamment au matériau. Un autre type de blocage axial est constitué par le matage ou la déformation Axial blockages of this type are known, or the pins are riveted. Riveting has certainly proven itself, but for larger pins, there are difficulties, especially due to the material. Another type of axial blockage is the matting or deformation
du bord extérieur des alésages.outer edge of the bores.
L'invention a pour but de procurer un blocage axial The object of the invention is to provide axial locking
du type ci-dessus dans lequel, - sans rivetage ou matage - of the above type in which - without riveting or matting -
on peut obtenir une liaison entre les broches et les entre- a connection can be obtained between the pins and the
toises extérieures du disque de roue, résistant aux forces axiales et aux couples de flexion apparaissants, et efficace outer tops of the wheel disk, resistant to axial forces and bending moments appearing, and effective
dans les deux directions axiales.in both axial directions.
Conformément à la présente invention, ce résultat est obtenu par le fait que chaque broche comporte au moins une liaison géométrique du type rainures-circulairesfrilles, chaque paire de rainures recevant les billes étant disposée According to the present invention, this result is obtained by the fact that each pin comprises at least one geometric connection of the groove-circular type, each pair of grooves receiving the balls being arranged
sur le pourtour de la broche et de la paroi de l'alésage cor- on the periphery of the spindle and the wall of the bore cor-
respondant. Grâce à cette disposition,:=n obtient non seulement sponding. With this provision: = n not only gets
un centrage axial des broches, mais en outre de par le con- axial centering of the pins, but also
tact linéaire entre billes et rainure - en raison du point d'attaque des forces excentriques - l'apparition de contraintes irrégulières est compensée par un fluage local. En outre, on a maintenant un plus grand choix de matériaux pour les linear contact between balls and groove - because of the point of attack of the eccentric forces - the appearance of irregular stresses is compensated by a local creep. In addition, there is now a greater choice of materials for
broches, le rivetage étant supprimé. pins, the riveting being removed.
Selon une autre caractéristique de la présente in- According to another characteristic of the present invention,
vention, les broches sont bloquées par deux liaisons rainures- vention, the pins are blocked by two groove-
circulaires/billes, prévues dans la zone des entretoises ex- circulars / balls, provided in the area of the outer struts
térieures du disque de roue. trâce à cette disposition on inside the wheel disc. thanks to this provision
évite l'élargissement axial de la tête de roue, respective- avoids the axial widening of the wheel head, respectively
ment la flexion des entretoises extérieures de roue et'un bending of the outer wheel spacers and one
relâchement des liaisons d'enfourchement. loosening of the interlocking links.
Etant donné que les voies de roulement des billes se déforment de-façon plastique sous une grande charge, la sollicitation croissante, entre les billes et leur voie de roulement correspondante provoque la formation d'un jeu. Pour éviter un tel jeu, on peut, selon une autre carctéristique Since the raceways of the balls plastically deform under a large load, increasing stress between the balls and their corresponding raceway causes the formation of a game. To avoid such a game, we can, according to another characteristic
de l'invention, précontraindre les broches de manière con- of the invention, preload the pins
nue. Ainsi on peut d'entrée supprimer la plastification at- tendue. Comme les billes sont insérées à travers des rainures de remplissage, selon une caractéristique de l'invention, ces rainures peuvent être fermées. On évite ainsi que les naked. Thus, the expected lamination can be omitted. As the balls are inserted through filler grooves, according to a feature of the invention, these grooves can be closed. This avoids
billes ne ressortent pendant le transport ou d'autres circons- The logs do not come out during transport or other
tances.stances.
Sur la dessin est représenté schématiquement un exem- In the drawing is schematically represented an example
ple d'exécution de l'invention.ple of the invention.
La figure 1 est un extrait d'une vue latérale d'un disque de rotor BP, muni d'une liaison conforme à l'invention, et La figure 2 est une vue en coupe selon la ligne A-A FIG. 1 is an extract from a side view of a rotor disk BP, provided with a connection according to the invention, and FIG. 2 is a sectional view along line A-A.
de la figure 1.of Figure 1.
Par 1 est désignée une tête de disque de roue dont les entretoises présentent des alésages cylindriques 2, à travers lesquels sont enfoncées des broches cylindriques 3, 1 denotes a wheel disc head whose spacers have cylindrical bores 2, through which cylindrical pins 3 are inserted,
qui servent à la fixation des enfourchements d'ailettes mo- which are used to fix the wingings
biles dans la zone de leurs enfourchements. Le blocage axial des broches 3 est effectué par des liaisons géométriques au moyen de petites billes 4 de par exemple 3 à 5 mm de diamètre, disposées dans les rainures circulaires 5 correspondantes, perpendiculaires à l'axe de la broche. Les rainures circulaires sont formées chacune par deux rainures en forme de demicercle, l'une d'elles étant prévue dans la broche 3 et l'autre biles in the area of their straddling. The axial locking of the pins 3 is performed by geometric connections by means of small balls 4, for example 3 to 5 mm in diameter, arranged in the corresponding circular grooves 5, perpendicular to the axis of the spindle. The circular grooves are each formed by two grooves in the form of a semicircle, one of them being provided in the pin 3 and the other
dans l'entretoise extérieure de la tête de disque de roue. in the outer spacer of the wheel disc head.
La mise en place des billes 4 s'effectue par l'intermédiaire des rainures 6, parallèles aux axes d'alésage correspondants, qui, ce qui n'est pas représenté sur le dessin, peuvent être The balls 4 are placed in place by means of the grooves 6, parallel to the corresponding bore axes, which, which is not shown in the drawing, can be
fermées par des pièces d'obturation, par exemple des goupil- shutter pieces, for example goupil-
les cannelées. Les rainures circulaires 5 sont en règle géné- the fluted. Circular grooves 5 are generally
rale entièrement remplies de billes. completely filled with marbles.
Pour le blocage d'une.broche 3 contre un décalage axial, il suffit d'une disposition unilatérale des liaisons géométriques 4, 5; cependant pour éviter un élargissement de la tête de disque de roue, la liaison géométrique 4, 5 For the locking of a spindle 3 against an axial offset, a unilateral arrangement of the geometrical connections 4, 5 is sufficient; however, to avoid enlargement of the wheel disc head, the geometric connection 4, 5
est utilisée des deux côtés.is used on both sides.
Chaque broche 3 de la fixation d'enfourchement est bloquée axialement par la ou les liaisons à rainures-circu- laires/billes. Each pin 3 of the bending attachment is axially locked by the one or more circular-groove / ball connections.
Les broches 3 peuvent en plus encore être précon- The pins 3 can in addition still be
traintes de façon connue (axialement), par exemple comme dans in a known manner (axially), for example as in
les assemblages boulonnés.bolted joints.
Comme possibilités d'application il y a les turbo- As application possibilities there are turbo-
machines axiales, dont les ailettes mobiles sont soumises axial machines, whose movable fins are subject
à de hautes sollicitations dues à la force centrifuge, tel- at high stresses due to centrifugal force, such as
les que par exemple les longues dernières ailettes des parties BP de turbines à vapeur à puissance élevée de tranche; les ailettes mobiles de turbines à gaz, de compresseurs axiaux such as the long last fins of the high-power steam wafer parts BP; movable blades of gas turbines, axial compressors
dans des propulseurs et analogues.in propellants and the like.
Claims (4)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19792951838 DE2951838C2 (en) | 1979-12-21 | 1979-12-21 | Axial securing of a collarless bolt in the bores of the wheel disk head webs and the blade plug-in feet of axial steam turbines and the like. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2484530A1 true FR2484530A1 (en) | 1981-12-18 |
FR2484530B1 FR2484530B1 (en) | 1985-11-22 |
Family
ID=6089306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8025038A Expired FR2484530B1 (en) | 1979-12-21 | 1980-11-26 | LOCK AGAINST AXIAL OFFSET OF THE SPINDLES IN THE BORES OF THE SPACERS FOR FIXING MOBILE FINS WITH RIDING AXIAL TURBINE TURBINES |
Country Status (7)
Country | Link |
---|---|
JP (1) | JPS56101005A (en) |
CH (1) | CH650835A5 (en) |
DD (1) | DD155445A1 (en) |
DE (1) | DE2951838C2 (en) |
FR (1) | FR2484530B1 (en) |
GB (1) | GB2066904B (en) |
SE (1) | SE446281B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3835481A1 (en) * | 1987-11-02 | 1989-05-11 | Mitsubishi Electric Corp | PINION STOPPER FOR ENGINE STARTER |
US5062769A (en) * | 1989-11-22 | 1991-11-05 | Ortolano Ralph J | Connector for turbine element |
JP2001010552A (en) | 1999-06-28 | 2001-01-16 | Komatsu Ltd | Fixing structure for link and pin of caterpillar band |
DE102008031780A1 (en) * | 2008-07-04 | 2010-01-07 | Man Turbo Ag | Blade and turbomachine with blade |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB191517310A (en) * | 1915-12-09 | 1916-11-23 | Edward Sydney Luard | Improvements in and relating to Means for Coupling together Shafts and other Parts. |
GB911370A (en) * | 1958-01-06 | 1962-11-28 | D W Price Corp | Improvements in and relating to locking devices |
GB929039A (en) * | 1959-09-07 | 1963-06-19 | Aerpat Ag | Improvements in and relating to releasable locking devices |
DE1500655A1 (en) * | 1966-04-30 | 1969-11-27 | Bosch Gmbh Robert | Detachable connection of machine parts |
US3507532A (en) * | 1968-04-04 | 1970-04-21 | Us Navy | Closure means |
FR1598815A (en) * | 1968-01-31 | 1970-07-06 | ||
DE2757570A1 (en) * | 1977-12-23 | 1979-06-28 | Mahle Gmbh | Oil guide bush contained in gudgeon pin - is fixed by its own recesses and recesses in gudgeon pin wall accommodating ball or wire retainers |
FR2438193A1 (en) * | 1978-10-03 | 1980-04-30 | Bedue Abel | Plug-type sealed pressure joint - in which O=rings are located axially by row of balls inserted in split groove |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3043563A (en) * | 1957-04-16 | 1962-07-10 | Aerpat Ag | Turbine rotor mounting |
-
1979
- 1979-12-21 DE DE19792951838 patent/DE2951838C2/en not_active Expired
-
1980
- 1980-11-15 CH CH846580A patent/CH650835A5/en not_active IP Right Cessation
- 1980-11-26 FR FR8025038A patent/FR2484530B1/en not_active Expired
- 1980-12-18 DD DD22626480A patent/DD155445A1/en unknown
- 1980-12-18 SE SE8008960A patent/SE446281B/en not_active IP Right Cessation
- 1980-12-19 JP JP17910080A patent/JPS56101005A/en active Pending
- 1980-12-22 GB GB8041018A patent/GB2066904B/en not_active Expired
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB191517310A (en) * | 1915-12-09 | 1916-11-23 | Edward Sydney Luard | Improvements in and relating to Means for Coupling together Shafts and other Parts. |
GB911370A (en) * | 1958-01-06 | 1962-11-28 | D W Price Corp | Improvements in and relating to locking devices |
GB929039A (en) * | 1959-09-07 | 1963-06-19 | Aerpat Ag | Improvements in and relating to releasable locking devices |
DE1500655A1 (en) * | 1966-04-30 | 1969-11-27 | Bosch Gmbh Robert | Detachable connection of machine parts |
FR1598815A (en) * | 1968-01-31 | 1970-07-06 | ||
US3507532A (en) * | 1968-04-04 | 1970-04-21 | Us Navy | Closure means |
DE2757570A1 (en) * | 1977-12-23 | 1979-06-28 | Mahle Gmbh | Oil guide bush contained in gudgeon pin - is fixed by its own recesses and recesses in gudgeon pin wall accommodating ball or wire retainers |
FR2438193A1 (en) * | 1978-10-03 | 1980-04-30 | Bedue Abel | Plug-type sealed pressure joint - in which O=rings are located axially by row of balls inserted in split groove |
Non-Patent Citations (1)
Title |
---|
EXBK/56 * |
Also Published As
Publication number | Publication date |
---|---|
DE2951838C2 (en) | 1982-12-23 |
CH650835A5 (en) | 1985-08-15 |
FR2484530B1 (en) | 1985-11-22 |
SE446281B (en) | 1986-08-25 |
JPS56101005A (en) | 1981-08-13 |
GB2066904A (en) | 1981-07-15 |
DE2951838A1 (en) | 1981-09-03 |
DD155445A1 (en) | 1982-06-09 |
SE8008960L (en) | 1981-06-22 |
GB2066904B (en) | 1984-01-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |