EP1426560A1 - Sealing for a low pressure compressor of turbofan engine - Google Patents
Sealing for a low pressure compressor of turbofan engine Download PDFInfo
- Publication number
- EP1426560A1 EP1426560A1 EP02447237A EP02447237A EP1426560A1 EP 1426560 A1 EP1426560 A1 EP 1426560A1 EP 02447237 A EP02447237 A EP 02447237A EP 02447237 A EP02447237 A EP 02447237A EP 1426560 A1 EP1426560 A1 EP 1426560A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- seal
- drum
- housing
- joint
- elastomer element
- 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
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/083—Sealings especially adapted for elastic fluid pumps
-
- 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
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/005—Sealing means between non relatively rotating elements
Definitions
- the present invention relates to a new seal designed to seal a speaker in the booster or low-pressure compressor of an engine turbofan type single or double flow (turbofan).
- the invention applies whenever a tightness is required in the speakers of a turbomachine, especially at the level of a record of blower.
- the assembly of the joint sealing is ensured by bolting a piece of joint metal 5 on a specific flange 4 associated with the drum 2.
- the deformations to which such a flange is subject in operation involve a great requirement flexibility for it. So is she usually performed "lace".
- the realization of this flange involves massive piece machining with additional important matter and therefore also cost supplement.
- the bolted joint involves the realization of holes in the joint, usually made of aluminum and in the flange, which decreases the life of these rooms.
- the present invention aims to provide a solution that is both free from the disadvantages of state of the art and alternative to the solution already proposed by the Applicant.
- the present invention relates to a device seal for a pressurized pressure vessel low pressure belonging to a turbomachine engine, preferably a turbojet or turbofan, comprising a seal ensuring a tight contact between the inner part drum supporting the blades of the stages of primary stream compression and rotating disk supporting the rotating vanes of the fan, at the level of a first end of the seal, characterized in that said seal is held at the drum in a housing thereof, an elastomeric member being molded on a second end of the seal to fit the form of said housing.
- the elastomer element is symmetrical with revolution and concentric with the housing practiced in the drum.
- the elastomer element is constructed so that it can be compressed by mounting in said housing. The seal is therefore centered without it is subject to constraints.
- the housing is made in a flange integral with the drum.
- the elastomeric element is a silicone element.
- the seal may be made of a metal or an alloy light metal, preferably aluminum.
- Figure 1 already mentioned above, represents an axial sectional view for a shape of execution of a sealing device according to the state of the technical.
- Figure 2 shows a perspective view for one embodiment of a sealing device according to the invention.
- Figure 3 shows a sectional view axis corresponding to the sealing device of the figure 2.
- the idea behind the present invention is to make a joint that does not play the role of element resilient and therefore not subject to constraints important.
- the new seal device is shown in FIGS. 2 and 3.
- the drum 2 comprises a first part of joint 15 shown in Figure 2, which is notched and which has notches 8 allowing the exceeding the fan blades at their level heels 10.
- the support of the drum 2 on the fan disk 1 is at the level of the excrescences 9 and a second part of joint 5.
- the second part of joint 5 is metal, for example aluminum. It is maintained place by its position sandwiched between the fan disc 1, at level of its curved end 6 and the drum 2 without a bridle but in which a dwelling 7 has been machined to accommodate the other end 6 'of the seal 5.
- the metal part 5 of the seal at this end is then trapped in an elastomer such as silicone filling the housing 7.
- the elastomer is so molded into the drum housing 2, around end 6 'of the metal seal 5 and constitutes the first part of the joint 15.
- An advantage of the present invention lies in the fact that, given the abandonment of the effect "spring", the metal part of the joint undergoes almost no more constraint and can therefore be made of a common metal such as aluminum.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Gasket Seals (AREA)
Abstract
Description
La présente invention se rapporte à un nouveau joint destiné à assurer l'étanchéité d'une enceinte dans le booster ou compresseur basse pression d'un moteur de type turboréacteur simple ou double flux (turbofan).The present invention relates to a new seal designed to seal a speaker in the booster or low-pressure compressor of an engine turbofan type single or double flow (turbofan).
En ce qui concerne le domaine général d'application, l'invention s'applique chaque fois qu'une étanchéité est requise dans les enceintes d'une turbomachine, en particulier au niveau d'un disque de soufflante.With regard to the general area application, the invention applies whenever a tightness is required in the speakers of a turbomachine, especially at the level of a record of blower.
Il est connu que, dans les turboréacteurs, l'étanchéité entre les différentes parties du compresseur est nécessaire pour éviter les fuites entre les enceintes maintenues à des pressions différentes.It is known that, in turbojet engines, the seal between the different parts of the compressor is necessary to prevent leaks between speakers maintained at different pressures.
Ainsi, comme représenté à la figure 1, au
niveau des premiers étages du compresseur basse pression
d'un turbofan, il est nécessaire d'assurer l'étanchéité
entre la partie interne du tambour 2, qui sert de support
des aubes mobiles du flux primaire et le disque 1 qui
supporte les aubes de la soufflante (disque fan).
L'étanchéité est assurée au moyen d'un flasque 3 situé
entre l'enceinte pressurisée délimitée par la partie
interne du tambour 2 et l'air ambiant, au niveau du disque
1 qui supporte les aubes de la soufflante. L'étanchéité est
assurée effectivement par un joint en tôle 5 présentant la
symétrie de révolution et venant se placer, au niveau de sa
partie recourbée 6, contre le disque 1.Thus, as shown in Figure 1,
level of the first stages of the low pressure compressor
of a turbofan, it is necessary to ensure the tightness
between the inner part of the
Traditionnellement, le montage du joint
d'étanchéité est assuré en boulonnant une pièce de joint
métallique 5 sur une bride spécifique 4 associée au tambour
2. Les déformations auxquelles une telle bride est soumise
en fonctionnement impliquent une exigence de grande
souplesse pour celle-ci. Aussi est-elle généralement
réalisée "en dentelle". La réalisation de cette bride
implique un usinage sur pièce massive avec supplément de
matière important et donc également supplément de coût. De
plus, l'assemblage boulonné implique la réalisation de
trous dans le joint, réalisé généralement en aluminium et
dans la bride, ce qui diminue la durée de vie de ces
pièces.Traditionally, the assembly of the joint
sealing is ensured by bolting a piece of
Une première solution pour la réalisation de joints d'étanchéité tambour/soufflante a été proposée dans la demande de brevet européen N° 01870116 (non publiée). Selon cette invention, un joint précontraint situé entre la bride solidaire du tambour et le disque rotatif supportant les aubes tournantes de la soufflante est maintenu en place, sans fixation mécanique, d'une part avec un talon prolongeant la bride et d'autre part par contact avec ledit disque. Le serrage de la face d'appui du joint sur le talon est ainsi réalisé par l'élasticité du joint.A first solution for the realization of drum / blower seals has been proposed in European Patent Application No. 01870116 (unpublished). According to this invention, a prestressed joint located between the integral flange of the drum and the rotating disc supporting the rotating vanes of the blower is maintained in place, without mechanical attachment, on the one hand with a heel extending the flange and secondly by contact with said disk. Clamping the support face of the seal on the heel is thus achieved by the elasticity of the joint.
Un tel joint précontraint doit être réalisé en un métal capable de supporter des contraintes importantes, tel que l'acier ou le titane. Il est coûteux à ,réaliser. De plus, les différences de pression entre les enceintes sont susceptibles de décoller le joint qui n'est maintenu que par son effet "ressort". Such a prestressed joint must be realized in a metal capable of withstanding constraints such as steel or titanium. It is expensive to ,achieve. In addition, the pressure differences between speakers are likely to take off the seal that is not maintained only by its effect "spring".
La présente invention vise à fournir une solution qui soit à la fois exempte des inconvénients de l'état de la technique et alternative à la solution déjà proposée par la Demanderesse.The present invention aims to provide a solution that is both free from the disadvantages of state of the art and alternative to the solution already proposed by the Applicant.
La présente invention concerne un dispositif d'étanchéité pour enceinte pressurisée d'un compresseur basse pression appartenant à un moteur de turbomachine, de préférence un turboréacteur ou turbofan, comprenant un joint assurant un contact étanche entre la partie interne du tambour supportant les aubes mobiles des étages de compression du flux primaire et le disque rotatif supportant les aubes tournantes de la soufflante, au niveau d'une première extrémité du joint, caractérisé en ce que ledit joint est maintenu au niveau du tambour dans un logement de celui-ci, un élément en élastomère étant moulé sur une seconde extrémité du joint pour s'adapter à la forme dudit logement.The present invention relates to a device seal for a pressurized pressure vessel low pressure belonging to a turbomachine engine, preferably a turbojet or turbofan, comprising a seal ensuring a tight contact between the inner part drum supporting the blades of the stages of primary stream compression and rotating disk supporting the rotating vanes of the fan, at the level of a first end of the seal, characterized in that said seal is held at the drum in a housing thereof, an elastomeric member being molded on a second end of the seal to fit the form of said housing.
Selon l'invention, l'élément en élastomère est à symétrie de révolution et concentrique avec le logement pratiqué dans le tambour. L'élément en élastomère est réalisé de manière à pouvoir être comprimé par montage dans ledit logement. Le joint est par ce fait centré sans qu'il soit soumis à des contraintes.According to the invention, the elastomer element is symmetrical with revolution and concentric with the housing practiced in the drum. The elastomer element is constructed so that it can be compressed by mounting in said housing. The seal is therefore centered without it is subject to constraints.
Avantageusement, le logement est réalisé dans une bride solidaire du tambour.Advantageously, the housing is made in a flange integral with the drum.
De manière particulièrement avantageuse, l'élément en élastomère est un élément en silicone.In a particularly advantageous manner, the elastomeric element is a silicone element.
Il ressort préférentiellement de l'invention que le joint peut être constitué d'un métal ou d'un alliage métallique léger, de préférence l'aluminium. It is preferentially apparent from the invention that the seal may be made of a metal or an alloy light metal, preferably aluminum.
La figure 1, déjà mentionnée ci-dessus, représente une vue en coupe axiale pour une forme d'exécution d'un dispositif d'étanchéité selon l'état de la technique.Figure 1, already mentioned above, represents an axial sectional view for a shape of execution of a sealing device according to the state of the technical.
La figure 2 représente une vue en perspective pour une forme d'exécution d'un dispositif d'étanchéité selon l'invention.Figure 2 shows a perspective view for one embodiment of a sealing device according to the invention.
La figure 3 représente une vue en coupe axiale correspondant au dispositif d'étanchéité de la figure 2.Figure 3 shows a sectional view axis corresponding to the sealing device of the figure 2.
L'idée à la base de la présente invention est de réaliser un joint qui ne joue pas le rôle d'élément résilient et qui ne soit donc pas le siège de contraintes importantes.The idea behind the present invention is to make a joint that does not play the role of element resilient and therefore not subject to constraints important.
Le nouveau dispositif de joint est représenté
sur les figures 2 et 3. Le tambour 2 comprend une première
partie de joint 15 représentée sur la figure 2, qui est
crantée et qui présente des encoches 8 permettant le
dépassement des aubes de soufflante au niveau de leurs
talons 10. L'appui du tambour 2 sur le disque de soufflante
1 se fait au niveau des excroissances 9 et d'une deuxième
partie de joint 5. La deuxième partie de joint 5 est
métallique, par exemple en aluminium. Elle est maintenue en
place par sa position en sandwich entre le disque fan 1, au
niveau de son extrémité recourbée 6 et le tambour 2
dépourvu de bride mais dans lequel un logement 7 a été
usiné pour pouvoir accueillir l'autre extrémité 6' du joint
métallique 5. La partie métallique 5 du joint à cette
extrémité est alors emprisonnée dans un élastomère tel que
du silicone remplissant le logement 7. L'élastomère est
donc moulé dans le logement du tambour 2, autour de
l'extrémité 6' du joint métallique 5 et constitue la
première partie du joint 15.The new seal device is shown
in FIGS. 2 and 3. The
Un avantage de la présente invention réside dans le fait que, vu l'abandon de l'effet "ressort", la partie métallique du joint ne subit quasiment plus aucune contrainte et peut donc être réalisée en un métal courant tel que l'aluminium.An advantage of the present invention lies in the fact that, given the abandonment of the effect "spring", the metal part of the joint undergoes almost no more constraint and can therefore be made of a common metal such as aluminum.
Claims (5)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002613621 DE60213621T2 (en) | 2002-12-03 | 2002-12-03 | Seal for the low-pressure compressor of an aircraft engine |
EP20020447237 EP1426560B1 (en) | 2002-12-03 | 2002-12-03 | Sealing for a low pressure compressor of turbofan engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20020447237 EP1426560B1 (en) | 2002-12-03 | 2002-12-03 | Sealing for a low pressure compressor of turbofan engine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1426560A1 true EP1426560A1 (en) | 2004-06-09 |
EP1426560B1 EP1426560B1 (en) | 2006-08-02 |
Family
ID=32309545
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20020447237 Expired - Lifetime EP1426560B1 (en) | 2002-12-03 | 2002-12-03 | Sealing for a low pressure compressor of turbofan engine |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1426560B1 (en) |
DE (1) | DE60213621T2 (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2596115A1 (en) * | 1986-03-21 | 1987-09-25 | Rolls Royce | Improvement to retention means |
US4968854A (en) * | 1988-11-10 | 1990-11-06 | Vanguard Products Corporation | Dual elastomer gasket shield for electronic equipment |
US4982889A (en) * | 1989-08-09 | 1991-01-08 | Union Carbide Corporation | Floating dual direction seal assembly |
CH681043A5 (en) * | 1989-07-13 | 1992-12-31 | Balzers Hochvakuum | Sealing element with light metal support - has elastomer sealing body forming compound unit with support. |
FR2695164A1 (en) * | 1992-08-26 | 1994-03-04 | Snecma | Turbomachine provided with a device preventing a longitudinal circulation of gas around the stages of straightening vanes. |
EP0691455A1 (en) * | 1994-07-06 | 1996-01-10 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" | Metallic lip seal and turbomachine fitted with said deal |
EP1262695A1 (en) * | 2001-05-30 | 2002-12-04 | Techspace aero | Sealing joint plate |
-
2002
- 2002-12-03 EP EP20020447237 patent/EP1426560B1/en not_active Expired - Lifetime
- 2002-12-03 DE DE2002613621 patent/DE60213621T2/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2596115A1 (en) * | 1986-03-21 | 1987-09-25 | Rolls Royce | Improvement to retention means |
US4968854A (en) * | 1988-11-10 | 1990-11-06 | Vanguard Products Corporation | Dual elastomer gasket shield for electronic equipment |
CH681043A5 (en) * | 1989-07-13 | 1992-12-31 | Balzers Hochvakuum | Sealing element with light metal support - has elastomer sealing body forming compound unit with support. |
US4982889A (en) * | 1989-08-09 | 1991-01-08 | Union Carbide Corporation | Floating dual direction seal assembly |
FR2695164A1 (en) * | 1992-08-26 | 1994-03-04 | Snecma | Turbomachine provided with a device preventing a longitudinal circulation of gas around the stages of straightening vanes. |
EP0691455A1 (en) * | 1994-07-06 | 1996-01-10 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" | Metallic lip seal and turbomachine fitted with said deal |
EP1262695A1 (en) * | 2001-05-30 | 2002-12-04 | Techspace aero | Sealing joint plate |
Also Published As
Publication number | Publication date |
---|---|
DE60213621T2 (en) | 2007-03-08 |
DE60213621D1 (en) | 2006-09-14 |
EP1426560B1 (en) | 2006-08-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2870323B1 (en) | Gasket device for the bearing of a turbomachine, comprising two elastic seals | |
CA2640003C (en) | Foil for turbomachine blade | |
EP1564455B1 (en) | Sealing arrangement for the high-pressure turbine of a turbomachine | |
FR2974593A1 (en) | TURBINE ENGINE COMPRISING A METAL PROTECTION OF A COMPOSITE PIECE | |
FR2902843A1 (en) | COMPRESSOR RECTIFIER AREA OR TURBOMACHINE DISTRIBUTOR SECTOR | |
FR2979663B1 (en) | SYSTEM AND METHOD FOR REALIZING THE SEALING OF A FLOW PATH | |
FR2973440A1 (en) | MECHANICAL ASPIRATION TRIM AND METHOD THEREOF | |
EP1433988B1 (en) | Regulation valve | |
FR2902172A1 (en) | SUCTION LABYRINTH SEAL | |
EP1580402B1 (en) | Turbomachine with two sub-assemblies being under axial pressure | |
FR2467335A1 (en) | ANNULAR SEAL FOR OIL SEALING | |
BE1022576B1 (en) | FIXED VOLUTE ELEMENT AND VOLUME FLUID MACHINE. | |
EP1544481A1 (en) | Metal sheet comprising means for fixing to a support and a seal | |
FR2649463A1 (en) | SHEET SEALING DEVICE | |
EP1426560B1 (en) | Sealing for a low pressure compressor of turbofan engine | |
FR3063777A1 (en) | DUAL-STAGE WHEEL ARRANGEMENT FOR A DOUBLE-STAGE CENTRIFUGAL TURBOCHARGER | |
EP1262696B1 (en) | Sealing arrangement for a turbomachine bearing | |
FR2996474A1 (en) | METHOD FOR THE INTEGRATION OF ABRADABLE MATERIAL IN ISOSTATIC COMPRESSION HOUSING | |
FR2958990A1 (en) | ELASTIC CONICAL WASHER AND ENVELOPE SEALING ELEMENT FOR EXERCISING A TARING | |
FR2619430A1 (en) | COUPLING AND BRAKING DEVICE THAT CAN BE SWITCHED BY A COMPRESSIBLE FLUID, ESPECIALLY PNEUMATIC | |
EP1262695B1 (en) | Sealing joint plate | |
FR3085187A1 (en) | A TURBOCHARGER HAVING A FLEXIBLE CONTACT AREA BETWEEN A BEARING SLEEVE AND A FIXED COMPRESSOR PART. | |
FR3127983A1 (en) | Upgraded turbomachine rotor | |
FR2660973A1 (en) | CYLINDER HEAD GASKET OF AN ALTERNATIVE COMPRESSOR. | |
EP3966477A1 (en) | Compact seal for sealing between a rotating shaft and a stationary body of a machine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
17P | Request for examination filed |
Effective date: 20040916 |
|
AKX | Designation fees paid |
Designated state(s): BE DE FR GB |
|
17Q | First examination report despatched |
Effective date: 20050627 |
|
RBV | Designated contracting states (corrected) |
Designated state(s): BE DE FR GB |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: TECHSPACE AERO S.A. |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): BE DE FR GB |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REF | Corresponds to: |
Ref document number: 60213621 Country of ref document: DE Date of ref document: 20060914 Kind code of ref document: P |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20060824 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20070503 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20141126 Year of fee payment: 13 Ref country code: DE Payment date: 20141121 Year of fee payment: 13 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 14 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 60213621 Country of ref document: DE |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20151203 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160701 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20151203 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 15 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 16 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20171121 Year of fee payment: 16 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20181231 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20211122 Year of fee payment: 20 |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MK Effective date: 20221203 |