EP1314856A1 - Dispositif de blocage des aubes dans une rainure d'un disque - Google Patents
Dispositif de blocage des aubes dans une rainure d'un disque Download PDFInfo
- Publication number
- EP1314856A1 EP1314856A1 EP02292896A EP02292896A EP1314856A1 EP 1314856 A1 EP1314856 A1 EP 1314856A1 EP 02292896 A EP02292896 A EP 02292896A EP 02292896 A EP02292896 A EP 02292896A EP 1314856 A1 EP1314856 A1 EP 1314856A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- groove
- screw
- screw head
- locking element
- radial
- 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
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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
- F01D5/32—Locking, e.g. by final locking blades or keys
-
- 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
Definitions
- the invention relates to a device for blocking the blades in the peripheral groove of a turbomachine disk, said blades with hammer-type feet likely to be introduced into said groove through a loading window and held in said groove by form cooperation with the side walls of the latter, said blocking device being capable of being introduced in said groove by said loading window and comprising a locking element arranged in the space separating two blade roots consecutive and capable of being reassembled in a lock housing formed in the side walls of said groove under the action of a screw radial operation, the head of which rests on the bottom of the groove, a radial clearance being provided between the bottom of the groove and the underside of the dawn feet.
- the screw head which is wider than the barrel accommodates in an imprint made in the bottom of the groove to the right of the corresponding lock housing. Because the screw head is wider that the barrel, the screw is made captive.
- the locking element consists of a protrusion formed on the upper face of a body which is in the locking position of the device and in abutment against the side walls of the groove in the vicinity of the groove groove. This body has a lower base which, in device locking position, away from the screw head, in order to allow said body to slide in the groove during blade assembly. Indeed to allow this sliding, the protuberance formed on the body must be in the groove, the base of the body is then supported on the screw head and located in the vicinity of the bottom of the groove.
- the one-piece part constituted by the body and its protrusion does not include positive guiding means during sliding in the groove during assembly.
- the screw head can therefore be improperly positioned in its imprint during tightening, which may result in a subsequent displacement of the screw head during the operation of the turbomachine and by a loss of the bracing effect. Tightening the incorrectly positioned screw can also lead to seizure of the thread, which can maintain the protuberance in the latch housing, but which subsequently causes difficulties in dismantling the device during maintenance operations.
- the element of locking device is axially sliding in a radial opening a body having a section adapted to the section of the groove and fixed radially and the head of the screw is trapped between the bottom of the groove and the base of the body.
- Means are provided to limit the reassembly of the locking element.
- the body is guided when it slides in the groove, which ensures precise radial direction of the axis of the screw and prevents seizures.
- the screw head is radially immobilized with respect to the body, and the action of centrifugal forces on the element of locking, in the event of partial loosening of the screw, prevents it from turn, because the screw head is then in positive support against the base from the body.
- the body is arranged between the feet of a pair of blades and has a section adapted to the section of said groove. It has a base lower located above the bottom of the groove and a radial opening through of non-circular section in which the element of Lock is slidably mounted under the action of the operating screw.
- the screw head is dimensioned so as to remain trapped between the bottom of the groove and the base of the body.
- the section of the body in a plane perpendicular to the axis of the operating screw is greater than the cross section of the locking element in the same plane, and the section of the screw head is also greater than the cross section of the locking element so that the face upper part of the screw head can come to bear on the base of the body.
- This technology is therefore not suitable for certain turbine disks due to lack of space between the feet of two blades consecutive.
- the object of the invention is to propose a blocking device which overcomes this drawback and which can accommodate in a space circumferential reduced.
- the diameter of the screw head is greater than the distance between the two blade feet adjacent.
- the blocking device then comprises two parts: the element locking bolt and operating screw.
- a intermediate plate is interposed between the screw head and the element locking, the ends of said plate being arranged under the two adjacent dawn feet.
- the plate has means for preventing its rotation relative to the locking element.
- These means consist, for example, of radial tabs which allow the element to rise locking during assembly.
- the plate also includes means to immobilize the screw head in rotation.
- These means consist of preferably by radial tabs pressing on the sides of the head quote. These tongues are flexible to allow rotation of the screw, during assembly, during the ascent of the locking element.
- the element of locking has a greater protrusion in the vicinity of the end of the screw which comes to lodge in the orifice made in the platforms of the two adjacent blades.
- This sleeve serves as a visual indicator of reassembly of the locking element.
- Figure 3 shows in section a wheel disc 1 of turbomachine which has at its periphery a groove 2 intended for maintain the hammer-type dawn feet.
- This groove 2 delimited by side walls 3a and 3b of curvilinear section, opens outwards by a groove 4 which has a dimension, in the direction of the axis of rotation of the wheel, less than the dimension of the cavity 5 formed in the bottom of groove 2.
- the feet of the blades have a section according to the plan radial passing through the axis of rotation of the disc 1 adapted to the section of the groove 2 in order to be held there by form cooperation.
- FIG. 1 is a top view of part of the disc 1.
- the side walls 3a and 3b have opposite a first pair of radial notches 6a and 6b which constitute a loading window, allowing the introduction feet 7 of the vanes 8 in the groove 2 during the mounting of these vanes 8, as well as a second pair of radial notches 9a, 9b which constitute a housing for the lock of an object blade locking device of the invention.
- the second pair of notches 9a, 9b is offset angularly with respect to the first pair of notches 6a, 6b of a distance equal to the angle formed by two consecutive blades or by a multiple of this angle.
- the same wheel disc 1 can include several locking devices according to the invention.
- FIG. 2 shows the same disc part 1 fitted with its blades 8.
- Each blade 8 has, between its foot 7 and its aerodynamic part 10, a platform 11 which covers the periphery of the disc 1, all of the platforms 11 of the vanes 8 delimiting internally the gas flow vein.
- each blade 8 is successively introduced in the groove 2 by the window formed by the first pair notches 6a, 6b and the blade 8 is made to slide in the direction of the arrow F until its platform 11 abuts against the platform of dawn previously introduced.
- vanes 8 are identical except for the penultimate climb, referenced 8a, and the last climb, referenced 8b, which have on the adjacent edges of their platforms 11a and 11b notches 12a and 12b which constitute an orifice 13 whose function will be explained later in this memo.
- a blocking device 14 is introduced through the window loading in the groove 2, then we position the foot 7 of the last blade in the loading window between the last blade 8a mounted and the first dawn climbed and we slide all of the blades 8 in the direction and arrow F, at an angle corresponding to the half measure the angle between two consecutive vanes, so that the platforms 11a and 11b of the first dawn mounted 8a and of the last dawn rise 8b be contiguous according to the median plane and the window of loading constituted by the first pair of notches 6a and 6b.
- the locking device 14 disposed between the feet 7 of the blades 8a and 8b is located opposite the second pair of notches 9a and 9b.
- the notches 9a and 9b have axial dimensions and peripheral lower than those of the notches 6a and 6b of the window of loading the vanes 8, to prevent the vanes from escaping 8 when they pass in front of these notches 9a and 9b.
- Figures 3 to 5 show a first embodiment of the blocking device 14 which consists of two parts, namely a locking element 16 and an operating screw 17.
- the locking element 16 has a section along a radial plane passing through the axis of rotation of the disc 1, which is drawn in such a way so that the locking element 16 can slide in the groove 2 during assembly. It has a radial thread fitted with a thread 31 intended to cooperate with the thread of the barrel 40 of the operating screw 17.
- the operating screw 17 comprises a large screw head 41 which accommodates in the annular space 21 delimited by the bottom 15 of the feet blade 7 and the bottom of groove 2. The diameter of this head 41 is greater than the distance separating the two blade roots 7a and 7b adjacent, as seen in Figure 4.
- the peripheral part of the upper face 42 of the screw head 41 can therefore come to bear against the undersides 15 of these two dawn feet 7a and 7b, which limits the possible radial displacement of the screw head 41.
- the circumferential dimension of the notches 9a and 9b is advantageously less than the distance separating the two blade roots consecutive 7a and 7b.
- the circumferential dimension of the base 23 of the locking element 16 is substantially equal to or less than the distance between the two adjacent blade roots 7a and 7b, while the circumferential dimension of the upper part of the element locking is substantially equal to the circumferential dimension of notches 9a and 9b, at least in the zones 22a, 22b which must accommodate in these notches 9a and 9b, after the element of the lock 16.
- zones 22a and 22b are arranged in the cavity 5 of the groove 2, when the element of lock is in the lowered position. It is the same for the base 23 of the locking element 16, the lower face 24 of which is then little distance above the upper face 42 of the screw head.
- the underside 24 of the locking element 16 is remote from the head quote.
- the side walls 25a and 25b of the base 23 are then in abutment against the side walls 3a and 3b of the groove 2 in the vicinity of the notches 9a and 9b.
- the forces centrifugal forces exerted on the locking element 16 tend to push the latter and the operating screw outwards.
- the side walls 25a and 25b of the base 23 are then in positive support against the side walls 3a and 3b of the groove 2, and in the event of loosening of the operating screw 17, displacement of the screw head 41 will be limited, because the peripheral portion of the screw head 17 is retained by the adjacent blade roots 7a and 7b.
- the head screw 17 may rest on the bottom of the groove 2, but the portions 22a and 22b of the locking element 16 will remain trapped in the notches 9a and 9b.
- the references 26a and 26b designate radial outgrowths, parallel to the axis of the operating screw 17, which extends radially outward above the top of the element lock 16, and the vertices of which are arranged in the orifice 13 of the platforms 11a and 11b, when the locking element 16 is reassembled, to serve as a visual witness to the correct ascent of the locking element 16, during assembly, or during visits maintenance.
- the first embodiment of the invention described above requires the diameter of the screw head 41 to be greater than the spacing between the two adjacent blade roots 7a and 7b. This requires that the axial dimension of the underside 15 of a blade root is greater than the distance separating the two adjacent blade roots 7a and 7b.
- Figures 6 to 12 show a second embodiment of the invention which can be applied to any type of bladed disc of the type hammer attachment.
- the element lock 16 is almost identical to that described above and will not not described further. Only the optional variants will be described.
- the operating screw 17, according to the second embodiment of the invention has a screw head 41, of small diameter and preferably non-circular. This diameter is for example less than the distance separating the two adjacent blade roots 7a and 7b.
- an intermediate plate 50 is interposed between the screw head 41 and the locking element 16.
- This intermediate plate 50 which has a oblong shape, has a central orifice 51 crossed by the barrel 40 of the operating screw 17, and its circumferential dimension is such that its ends 52a and 52b are arranged under the two blade roots adjacent 7a and 7b.
- the upper face 42 of the screw head 17 bears on the underside of the intermediate plate 50, of which the ends 52a and 52b come to bear on the undersides 15 of the two adjacent blade roots, which limits the radial movement of the head screw 41.
- the intermediate plate 50 which is produced preferably from a sheet by cutting and folding, which is shown in detail in FIGS. 9 to 11, comprises two radial tongues 53a and 53b which extend outwards and which are housed in radial grooves 54a and 54b formed on two opposite faces of the element lock 16, as shown in Figure 12.
- Cooperation tabs 53a and 53b with grooves 54a and 54b prevent the plate intermediate 50 to rotate relative to the locking element 16, while allowing the locking element 16 to slide by relative to the intermediate plate 50, during the ascent or the lowering of the locking element.
- the grooves 54a and 54b are preferably arranged on the faces of the locking element 16 which are opposite the faces adjacent to the two blade roots 7a and 7b.
- the intermediate plate 50 also includes and preferably two elastic tabs 55a and 55b which extend radially inward and which are intended to prevent loosening of the operating screw 17, the head 41 of the latter then comprising sections, six in number for example, on which the tongues 55a and 55b are in support.
- the elasticity of the tongues 55a and 55b is calculated so as to allow the rotation of the screw head 17 when a torque is exerted predetermined on the end 43 of the operating screw 17, during the raising or lowering of the locking element 16, and is sufficient to prevent rotation of the screw head 17 in the absence of this torque.
- FIG. 9 shows the development of the intermediate plate 50, before folding the tabs 53a, 53b, 55a and 55b. We notice that the orifice 51 is not circular.
- the centering of the intermediate plate 50 relative to the screw maneuver 17 is achieved by the cooperation of the tongues 53a and 53b with the grooves 54a and 54b of the locking element 16.
- the orifice 51 is however dimensioned in such a way that the screw head 41 is in pressing against the underside 55 of the intermediate plate 50.
- the locking element 16 does not need the radial grooves 54a and 54b described above, which are used to prevent rotation of the plate intermediate 50.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
- la figure 1 est une vue de dessus d'une partie de disque de roue non équipée d'aubes ;
- la figure 2 est une vue de dessus d'une partie de disque de roue équipée d'aubes à attache marteau immobilisées par un dispositif de verrouillage conforme à l'invention ;
- la figure 3 est une coupe selon la ligne III-III de la figure 2 d'un dispositif de blocage selon un premier mode de réalisation de l'invention, cette coupe étant prise selon un plan radial passant par l'axe de la turbomachine, les aubes n'étant pas montrées par souci de clarté ;
- la figure 4 est une vue axiale du dispositif de blocage entre deux pieds d'aube selon le premier mode de réalisation ;
- la figure 5 concerne également le premier mode de réalisation selon la ligne III-III, l'élément de verrouillage n'étant pas encore remonté ;
- les figure 6, 7 et 8 sont semblables respectivement aux figures 3, 4 et 5 et concernent un deuxième mode de réalisation de l'invention ;
- la figure 9 est une vue développée de la plaque en tôle utilisée dans le deuxième mode de réalisation ;
- la figure 10 est une coupe de la plaque intermédiaire selon la ligne X-X de la figure 11 ;
- la figure 11 est une vue de dessus de la plaque intermédiaire ; et
- la figure 12 est une vue de dessus de l'élément de verrouillage selon le deuxième mode de réalisation de l'invention.
Claims (7)
- Dispositif de blocage des aubes (8) dans la rainure périphérique (2) d'un disque (1) de turbomachine, lesdites aubes comportant des pieds (7) de type attache marteau susceptibles d'être introduits dans ladite rainure (2) par une fenêtre de chargement (6a, 6b) et maintenus dans ladite rainure (2) par coopération de forme avec les parois latérales (3a, 3b) de cette dernière, ledit dispositif de blocage étant susceptible d'être introduit dans ladite rainure par ladite fenêtre de chargement et comportant un élément de verrouillage (16) disposé dans un espace séparant deux pieds d'aube consécutifs (7a, 7b) et susceptible d'être remonté dans un logement de verrou ménagé dans les parois latérales de ladite rainure sous l'action d'une vis de manoeuvre (17) radiale dont la tête (41) est en appui sur le fond de la rainure, un jeu radial étant prévu entre le fond de la rainure (2) et le dessous (15) des pieds d'aube,
caractérisé par le fait que la tête de vis (41) est retenue radialement vers l'extérieur par les deux pieds d'aube adjacents (7a, 7b). - Dispositif selon la revendication 1, caractérisé par le fait que le diamètre de la tête de vis (41) est supérieur à l'écartement entre lesdits deux pieds d'aube (7a, 7b).
- Dispositif selon la revendication 1, caractérisé par le fait qu'une plaque intermédiaire (50) est interposée entre la tête de vis (17) et l'élément de verrouillage (16), les extrémités (52a, 52b) de ladite plaque (50) étant disposées sous lesdits deux pieds d'aube adjacents (7a, 7b).
- Dispositif selon la revendication 3, caractérisé par le fait que la plaque (50) comporte des moyens pour empêcher sa rotation par rapport à l'élément de verrouillage (16).
- Dispositif selon la revendication 4, caractérisé par le fait que lesdits moyens sont constitués par des languettes radiales (53a, 53b).
- Dispositif selon l'une quelconque des revendications 3 à 5, caractérisé par le fait que la plaque comporte des moyens pour immobiliser en rotation la tête de vis (41).
- Dispositif selon la revendication 6, caractérisé par le fait que lesdits moyens comportent des languettes radiales (54a, 54b) appuyant sur des pans de la tête de vis (41).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0115095A FR2832455B1 (fr) | 2001-11-22 | 2001-11-22 | Dispositif de blocage des aubes dans une rainure d'un disque |
FR0115095 | 2001-11-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1314856A1 true EP1314856A1 (fr) | 2003-05-28 |
EP1314856B1 EP1314856B1 (fr) | 2005-01-26 |
Family
ID=8869657
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02292896A Expired - Lifetime EP1314856B1 (fr) | 2001-11-22 | 2002-11-22 | Dispositif de blocage des aubes dans une rainure d'un disque |
Country Status (9)
Country | Link |
---|---|
US (1) | US6752598B2 (fr) |
EP (1) | EP1314856B1 (fr) |
JP (1) | JP4043922B2 (fr) |
CA (1) | CA2411688C (fr) |
DE (1) | DE60202738T2 (fr) |
ES (1) | ES2233784T3 (fr) |
FR (1) | FR2832455B1 (fr) |
RU (1) | RU2239070C2 (fr) |
UA (1) | UA73767C2 (fr) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2964692A1 (fr) * | 2010-09-13 | 2012-03-16 | Snecma | Dispositif de blocage circonferentiel d'aubes marteau pour turbomachine, a deploiement radial ameliore |
FR2965008A1 (fr) * | 2010-09-16 | 2012-03-23 | Snecma | Disque a aubes pour rotor de turbomachine, et turbomachine equipee d'un tel disque |
FR2973068A1 (fr) * | 2011-03-21 | 2012-09-28 | Snecma | Dispositif de blocage d'aubes dans une rainure d'un disque de turbomachine |
FR2973067A1 (fr) * | 2011-03-21 | 2012-09-28 | Snecma | Dispositif de blocage d'aubes dans une rainure d'un disque de turbomachine |
FR2973066A1 (fr) * | 2011-03-21 | 2012-09-28 | Snecma | Dispositif de blocage d'aubes dans une rainure d'un disque de turbomachine |
WO2012131227A1 (fr) * | 2011-03-21 | 2012-10-04 | Snecma | Dispositif de blocage d'aubes dans une rainure d'un disque de turbomachine |
EP2669478A1 (fr) * | 2012-05-31 | 2013-12-04 | Hitachi, Ltd. | Compresseur |
EP2719866A1 (fr) * | 2012-10-12 | 2014-04-16 | Techspace Aero S.A. | Verrou d'aubes de tambour dans une rainure circonférentielle de rotor |
CN104481594A (zh) * | 2014-10-28 | 2015-04-01 | 哈尔滨汽轮机厂有限责任公司 | 用于压气机周向环状燕尾型叶根的锁紧装置 |
EP3696380A1 (fr) * | 2019-02-04 | 2020-08-19 | Rolls-Royce plc | Adaptateur de positionnement d'un outil d'usinage entre deux surfaces portantes |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7435055B2 (en) * | 2005-03-29 | 2008-10-14 | Siemens Power Generation, Inc. | Locking spacer assembly for a turbine engine |
FR2886336B1 (fr) * | 2005-05-26 | 2007-08-24 | Snecma Moteurs Sa | Perfectionnement a une roue aubagee de rotor pour renforcer le verrouillage des aubes |
US8206116B2 (en) * | 2005-07-14 | 2012-06-26 | United Technologies Corporation | Method for loading and locking tangential rotor blades and blade design |
EP1801355B1 (fr) * | 2005-12-23 | 2015-02-11 | Techspace Aero | Dispositif pour bloquer les aubes d'un disque de turbomachine |
US8608446B2 (en) * | 2006-06-05 | 2013-12-17 | United Technologies Corporation | Rotor disk and blade arrangement |
JP4886735B2 (ja) * | 2008-05-26 | 2012-02-29 | 株式会社東芝 | タービン動翼組立体および蒸気タービン |
FR2940354B1 (fr) * | 2008-12-23 | 2015-01-09 | Snecma | Dispositif de fixation d'aubes a attache marteau et disque de compresseur adapte. |
US8182230B2 (en) * | 2009-01-21 | 2012-05-22 | Pratt & Whitney Canada Corp. | Fan blade preloading arrangement and method |
GB0908502D0 (en) * | 2009-05-19 | 2009-06-24 | Rolls Royce Plc | A balanced rotor for a turbine engine |
US8523529B2 (en) * | 2009-11-11 | 2013-09-03 | General Electric Company | Locking spacer assembly for a circumferential entry airfoil attachment system |
CH703997A1 (de) * | 2010-10-27 | 2012-04-30 | Alstom Technology Ltd | Schaufelanordnung, insbesondere Leitschaufelanordnung. |
JP5730085B2 (ja) * | 2011-03-17 | 2015-06-03 | 三菱日立パワーシステムズ株式会社 | ロータ構造 |
US8932023B2 (en) * | 2012-01-13 | 2015-01-13 | General Electric Company | Rotor wheel for a turbomachine |
US20140286782A1 (en) * | 2012-08-07 | 2014-09-25 | Solar Turbines Incorporated | Turbine blade staking pin |
US9341071B2 (en) * | 2013-10-16 | 2016-05-17 | General Electric Company | Locking spacer assembly |
DE102013223583A1 (de) | 2013-11-19 | 2015-05-21 | MTU Aero Engines AG | Schaufel-Scheiben-Verbund, Verfahren und Strömungsmaschine |
DE102015203290A1 (de) * | 2015-02-24 | 2016-09-29 | MTU Aero Engines AG | Sicherungselement und Strömungsmaschine |
CN105065065A (zh) * | 2015-08-07 | 2015-11-18 | 山东青能动力股份有限公司 | 一种枞树型叶根动叶片锁紧装置及其装配工艺 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB659592A (en) * | 1948-09-17 | 1951-10-24 | Sulzer Ag | Improvements relating to rotors for turbines or axial flow compressors |
US3088708A (en) * | 1961-12-29 | 1963-05-07 | Seymour J Feinberg | Compressor blade locking device |
FR1402507A (fr) * | 1963-10-24 | 1965-06-11 | Gen Electric | Dispositif de verrouillage des ailettes d'un rotor |
US3955898A (en) * | 1974-08-13 | 1976-05-11 | Motoren- Und Turbinen-Union Munchen Gmbh | Locking device for the rotor blades of a flow machine |
GB2156908A (en) * | 1984-03-30 | 1985-10-16 | Rolls Royce | Bladed rotor assembly for gas turbine engine |
USH1258H (en) * | 1992-09-16 | 1993-12-07 | The United States Of America As Represented By The Secretary Of The Air Force | Blade lock screw |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2810366B1 (fr) * | 2000-06-15 | 2002-10-11 | Snecma Moteurs | Dispositif de blocage d'aubes a attaches marteau sur un disque |
-
2001
- 2001-11-22 FR FR0115095A patent/FR2832455B1/fr not_active Expired - Fee Related
-
2002
- 2002-11-13 CA CA2411688A patent/CA2411688C/fr not_active Expired - Fee Related
- 2002-11-21 JP JP2002337524A patent/JP4043922B2/ja not_active Expired - Fee Related
- 2002-11-21 US US10/300,815 patent/US6752598B2/en not_active Expired - Lifetime
- 2002-11-21 UA UA2002119287A patent/UA73767C2/uk unknown
- 2002-11-21 RU RU2002131463/06A patent/RU2239070C2/ru not_active IP Right Cessation
- 2002-11-22 DE DE60202738T patent/DE60202738T2/de not_active Expired - Lifetime
- 2002-11-22 EP EP02292896A patent/EP1314856B1/fr not_active Expired - Lifetime
- 2002-11-22 ES ES02292896T patent/ES2233784T3/es not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB659592A (en) * | 1948-09-17 | 1951-10-24 | Sulzer Ag | Improvements relating to rotors for turbines or axial flow compressors |
US3088708A (en) * | 1961-12-29 | 1963-05-07 | Seymour J Feinberg | Compressor blade locking device |
FR1402507A (fr) * | 1963-10-24 | 1965-06-11 | Gen Electric | Dispositif de verrouillage des ailettes d'un rotor |
US3955898A (en) * | 1974-08-13 | 1976-05-11 | Motoren- Und Turbinen-Union Munchen Gmbh | Locking device for the rotor blades of a flow machine |
GB2156908A (en) * | 1984-03-30 | 1985-10-16 | Rolls Royce | Bladed rotor assembly for gas turbine engine |
USH1258H (en) * | 1992-09-16 | 1993-12-07 | The United States Of America As Represented By The Secretary Of The Air Force | Blade lock screw |
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FR2964692A1 (fr) * | 2010-09-13 | 2012-03-16 | Snecma | Dispositif de blocage circonferentiel d'aubes marteau pour turbomachine, a deploiement radial ameliore |
US8858181B2 (en) | 2010-09-13 | 2014-10-14 | Snecma | Circumferential blocking device of clamp vanes for turbine engine, with improved radial deployment |
FR2965008A1 (fr) * | 2010-09-16 | 2012-03-23 | Snecma | Disque a aubes pour rotor de turbomachine, et turbomachine equipee d'un tel disque |
FR2973068A1 (fr) * | 2011-03-21 | 2012-09-28 | Snecma | Dispositif de blocage d'aubes dans une rainure d'un disque de turbomachine |
FR2973067A1 (fr) * | 2011-03-21 | 2012-09-28 | Snecma | Dispositif de blocage d'aubes dans une rainure d'un disque de turbomachine |
FR2973066A1 (fr) * | 2011-03-21 | 2012-09-28 | Snecma | Dispositif de blocage d'aubes dans une rainure d'un disque de turbomachine |
WO2012131227A1 (fr) * | 2011-03-21 | 2012-10-04 | Snecma | Dispositif de blocage d'aubes dans une rainure d'un disque de turbomachine |
EP2669478A1 (fr) * | 2012-05-31 | 2013-12-04 | Hitachi, Ltd. | Compresseur |
EP2719866A1 (fr) * | 2012-10-12 | 2014-04-16 | Techspace Aero S.A. | Verrou d'aubes de tambour dans une rainure circonférentielle de rotor |
US10066487B2 (en) | 2012-10-12 | 2018-09-04 | Safran Aero Boosters Sa | Drum blade lock in a circumferential rotor groove |
CN104481594A (zh) * | 2014-10-28 | 2015-04-01 | 哈尔滨汽轮机厂有限责任公司 | 用于压气机周向环状燕尾型叶根的锁紧装置 |
EP3696380A1 (fr) * | 2019-02-04 | 2020-08-19 | Rolls-Royce plc | Adaptateur de positionnement d'un outil d'usinage entre deux surfaces portantes |
Also Published As
Publication number | Publication date |
---|---|
JP4043922B2 (ja) | 2008-02-06 |
ES2233784T3 (es) | 2005-06-16 |
CA2411688C (fr) | 2010-04-27 |
US20030123986A1 (en) | 2003-07-03 |
FR2832455A1 (fr) | 2003-05-23 |
FR2832455B1 (fr) | 2004-04-02 |
DE60202738T2 (de) | 2006-03-30 |
RU2239070C2 (ru) | 2004-10-27 |
UA73767C2 (uk) | 2005-09-15 |
DE60202738D1 (de) | 2005-03-03 |
US6752598B2 (en) | 2004-06-22 |
JP2003193801A (ja) | 2003-07-09 |
EP1314856B1 (fr) | 2005-01-26 |
CA2411688A1 (fr) | 2003-05-22 |
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