NO852723L - SEAL BETWEEN TWO MACHINE PARTS. - Google Patents
SEAL BETWEEN TWO MACHINE PARTS.Info
- Publication number
- NO852723L NO852723L NO852723A NO852723A NO852723L NO 852723 L NO852723 L NO 852723L NO 852723 A NO852723 A NO 852723A NO 852723 A NO852723 A NO 852723A NO 852723 L NO852723 L NO 852723L
- Authority
- NO
- Norway
- Prior art keywords
- brush
- seal
- seal according
- shaft
- parts
- Prior art date
Links
- 238000007789 sealing Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 210000003027 ear inner Anatomy 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
- F16J15/3288—Filamentary structures, e.g. brush seals
-
- 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
- F01D11/003—Preventing or minimising internal leakage of working-fluid, e.g. between stages by packing rings; Mechanical seals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/30—Application in turbines
- F05D2220/32—Application in turbines in gas turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/30—Application in turbines
- F05D2220/32—Application in turbines in gas turbines
- F05D2220/323—Application in turbines in gas turbines for aircraft propulsion, e.g. jet engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/55—Seals
- F05D2240/56—Brush seals
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Description
Oppfinnelsen angår en tetning mellom to maskindeler hvormed rom med ulike trykk adskilles fra hverandre. Ved slike maskiner, eksempelvis strømningsmaskiner benyttes i det vesentlige labyrinter, roterende væskeringer, glide-tetninger o.l. I den senere tid er også børstetetninger foreslått. The invention relates to a seal between two machine parts with which rooms with different pressures are separated from each other. In the case of such machines, for example flow machines, labyrinths, rotating fluid rings, sliding seals etc. are essentially used. In recent times, brush seals have also been proposed.
En børstetetning, eksempelvis som beskrevet i DE 2 921 512, har en børste som er rettet radialt innad og rager ut fra en børsteholder. Det er også foreslått å la børstene rager ut radialt fra børsteholderen. Prinsippielt foregår imidlertid avtettingen ved de kjente forslag ved hjelp av børstetetning, med to radialt over hverandre liggende ele-menter, hvorav det ene er børsten og det andre dannes av motløpsdelen. A brush seal, for example as described in DE 2 921 512, has a brush which is directed radially inwards and projects from a brush holder. It is also suggested that the brushes protrude radially from the brush holder. In principle, however, the sealing in the known proposals takes place by means of a brush seal, with two elements lying radially above each other, one of which is the brush and the other is formed by the counterflow part.
Ved romlig trange konstruksjoner og toleransegrenser eller kompliserte drivanordninger med eventuelt flere kon-sentriske aksler som eventuelt også skal kunne beveges mot hverandre, kan de foran beskrevne radiale tetninger ikke anordnes eller eventuelt overhode ikke benyttes. In the case of spatially tight constructions and tolerance limits or complicated drive devices with possibly several concentric shafts which may also be able to be moved towards each other, the radial seals described above cannot be arranged or possibly not used at all.
Det er oppfinnelsens'oppgave å frembringe en tetning mellom to maskindeler og rom med ulike trykk, som på den ene side har gode omdreiningsegenskaper og gode tetningsegenskaper og som på den annen side kan benyttes i konstruksjoner med romlig meget begrensede forhold. It is the invention's task to produce a seal between two machine parts and rooms with different pressures, which on the one hand has good rotational properties and good sealing properties and which, on the other hand, can be used in constructions with spatially very limited conditions.
Denne oppgave løses med de i kravenes karakter-iserende deler anførte trekk. This task is solved with the features listed in the characterizing parts of the requirements.
Innenfor oppfinnelsens ramme ligger også alle kombinasjoner og modifikasjoner av disse trekk også i sammenheng med i og for seg kjente trekk. Within the framework of the invention, all combinations and modifications of these features also lie in connection with per se known features.
De vesentlige fordeler ved oppfinnelsen er dens anvendbarhet også ved små toleranser mellom to deler, samt generelt den forbedrede mulighet til plassering og anvend-barheten også ved i hverandre roterende aksler (konsen-tiske aksler) uavhengig om disse roterer i samme retning eller motsatt, dvs. at driftstypen spiller en underordnet rolle. Selvfølgelig er oppfinnelsen ikke begrenset til tetting mellom to deler som dreier, men også mellom faststående og/eller dreiende deler. Det kan her være tale om både indre og ytre deler og tetningen kan ifølge oppfinnelsen være festet i en dels endeområde eller kan være be-standdel av en eller flere av disse deler. Et foretrukket bruksområde for oppfinnelsen ligger ved strømningsmaskiner og her ved gassdrevne drivaggregater for fly, især slike som har flere konsentrisk anordnede aksler. The significant advantages of the invention are its applicability even with small tolerances between two parts, as well as generally the improved possibility of placement and applicability also with mutually rotating shafts (concentric shafts) regardless of whether these rotate in the same direction or opposite, i.e. .that the type of operation plays a subordinate role. Of course, the invention is not limited to sealing between two rotating parts, but also between stationary and/or rotating parts. This can be about both inner and outer parts and, according to the invention, the seal can be fixed in the end area of a part or can be a component of one or more of these parts. A preferred area of application for the invention lies with flow machines and here with gas-powered drive units for aircraft, especially those which have several concentrically arranged shafts.
Utførelser av oppfinnelsen er rent skjematisk vist på tegningen mens modifikasjoner av disse selvfølgelig kan gjennomføres uten å fjerne seg fra oppfinnelsens ramme. Embodiments of the invention are purely schematically shown in the drawing, while modifications of these can of course be carried out without departing from the scope of the invention.
På tegningen viser fig. 1 en tetning mellom et hus og en aksel med en flens, fig. 2 viser en tetning i en aksels endeområde, anordnet overfor et faststående hus, fig. 3 viser en tetning mellom to mot hverandre roterende aksler og fig. 4 viser en tetning mellom to i samme retning roterende aksler. In the drawing, fig. 1 a seal between a housing and a shaft with a flange, fig. 2 shows a seal in the end area of a shaft, arranged opposite a fixed housing, fig. 3 shows a seal between two counter-rotating shafts and fig. 4 shows a seal between two shafts rotating in the same direction.
Som vist på fig. 1 er en aksel 1 relativ bevegelig i forhold til et hus 2 i pilens retning, dvs. dreibar. Børstetetningen 3 er innspent i en holder 4 i en vinkel til akselens midtakse. I rett vinkel til dette er anordnet en berøringsflate 5 på en flens 6 på akselen 1. Husets 2 faststående vegg 7 har den samme vinkel til akselens 1 akse som berøringsflaten 5. Dette vil si at de frie ender av en børstes 3 bust står rettvinklet mot berøringsflaten 5 og avtetter rommet 8 (hulrommet i huset 2) fra flensens 6 rom 9. As shown in fig. 1, a shaft 1 is relatively movable in relation to a housing 2 in the direction of the arrow, i.e. rotatable. The brush seal 3 is clamped in a holder 4 at an angle to the center axis of the shaft. At right angles to this, a contact surface 5 is arranged on a flange 6 on the shaft 1. The fixed wall 7 of the housing 2 has the same angle to the axis of the shaft 1 as the contact surface 5. This means that the free ends of a brush's 3 bristles are at right angles to the contact surface 5 and seals the space 8 (the cavity in the housing 2) from the space 9 of the flange 6.
Børstetetningen kan i det vesentlige være av kjent type, det vil si at den enkelte bust kan være sammenfattet i grupper i enkelte holdere som er anordnet på en ring 4 som omgir akselen 1. Også andre festemåter for busten i holderen kan benyttes. The brush seal can essentially be of a known type, that is to say that the individual bristles can be grouped together in individual holders which are arranged on a ring 4 that surrounds the shaft 1. Other methods of fastening the bristles in the holder can also be used.
Fig. 2 viser en aksel 1 som er dreibar i forhold til et hus 2 med et hulrom 8. Dette er overfor rommet med ulikt trykk 9 avtettet ved hjelp av en børstetetning 3 på akselens 1 indre ende som er anordnet i en vinkel til berøringsflaten 5. Berøringsflaten har på sin side en vinkel til akselens 1 midtakse og til huset 2 (identiskt). Busten står i alle utførelser alltid i rett vinkel til berøringsflaten. Fig. 1 adskiller seg i det vesentlige fra fig. 2 kun ved at det istedet for huset foreligger en motsatt roterende hul aksel 8 (relativt til akselen 1). Videre er børsten 3 festet til den hule aksel og berøringsflaten 5 er anordnet på et konisk formet endeområde 4 av akselen 1 Fig. 2 shows a shaft 1 which is rotatable in relation to a housing 2 with a cavity 8. This is opposite the space with different pressure 9 sealed by means of a brush seal 3 on the inner end of the shaft 1 which is arranged at an angle to the contact surface 5 The contact surface, in turn, has an angle to the center axis of the shaft 1 and to the housing 2 (identical). In all designs, the bristles are always at right angles to the contact surface. Fig. 1 differs substantially from fig. 2 only in that instead of the housing there is a counter-rotating hollow shaft 8 (relative to shaft 1). Furthermore, the brush 3 is attached to the hollow shaft and the contact surface 5 is arranged on a conically shaped end area 4 of the shaft 1
i rett vinkel til busten 3 og i en vinkel til de to akslers 1 og 10 midtakse. at right angles to the bristle 3 and at an angle to the central axis of the two axles 1 and 10.
Av fig. 4 fremgår en utførelse av oppfinnelsen med en aksel 1 i en hul aksel 10 som roterer i samme retning og hvor børstetetningen 3 er anordnet i holdere 4 på innsiden av den hule aksel 10 slik at busten roterer mot be-røringsflater 5 på en flens 6 på akselen 1. From fig. 4 shows an embodiment of the invention with a shaft 1 in a hollow shaft 10 which rotates in the same direction and where the brush seal 3 is arranged in holders 4 on the inside of the hollow shaft 10 so that the bristles rotate against contact surfaces 5 on a flange 6 on axle 1.
Claims (9)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3425162A DE3425162C2 (en) | 1984-07-07 | 1984-07-07 | Radial gap seal |
Publications (1)
Publication Number | Publication Date |
---|---|
NO852723L true NO852723L (en) | 1986-01-08 |
Family
ID=6240147
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO852723A NO852723L (en) | 1984-07-07 | 1985-07-05 | SEAL BETWEEN TWO MACHINE PARTS. |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0169394A1 (en) |
JP (1) | JPS6136566A (en) |
DE (1) | DE3425162C2 (en) |
NO (1) | NO852723L (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5029875A (en) * | 1989-07-07 | 1991-07-09 | Textron Inc. | Fluid seal structure |
FR2724412B1 (en) * | 1994-09-14 | 1996-10-25 | Snecma | BLADE OF A TURBOMACHINE IN COMPOSITE MATERIAL PROVIDED WITH A SEAL AND ITS MANUFACTURING METHOD |
IT1284468B1 (en) * | 1995-07-28 | 1998-05-21 | Mtu Muenchen Gmbh | BRUSH GASKET FOR TURBOMACHINES |
DE19527605C2 (en) * | 1995-07-28 | 1998-02-19 | Mtu Muenchen Gmbh | Brush seal for turbomachinery |
DE19747555A1 (en) | 1997-10-28 | 1999-04-29 | Voith Sulzer Papiertech Patent | Heated and / or coolable cylinder |
KR20010041102A (en) * | 1998-02-19 | 2001-05-15 | 칼 하인쯔 호르닝어 | Sealing device and use of a sealing device |
US6887038B2 (en) * | 2003-09-02 | 2005-05-03 | General Electric Company | Methods and apparatus to facilitate sealing between rotating turbine shafts |
ITCO20110058A1 (en) | 2011-12-05 | 2013-06-06 | Nuovo Pignone Spa | turbomachinery |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE168653C (en) * | ||||
DE2345487C2 (en) * | 1972-09-11 | 1983-08-11 | Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt | Contact seal for self-aligning roller bearings |
DE2921512A1 (en) * | 1978-05-31 | 1979-12-13 | Cross Mfg Co 1938 Ltd | METHOD OF MANUFACTURING A BRUSH SEAL |
-
1984
- 1984-07-07 DE DE3425162A patent/DE3425162C2/en not_active Expired
-
1985
- 1985-06-25 EP EP85107863A patent/EP0169394A1/en not_active Withdrawn
- 1985-07-05 NO NO852723A patent/NO852723L/en unknown
- 1985-07-08 JP JP14846485A patent/JPS6136566A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
JPS6136566A (en) | 1986-02-21 |
EP0169394A1 (en) | 1986-01-29 |
DE3425162A1 (en) | 1986-01-16 |
DE3425162C2 (en) | 1987-05-14 |
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