EP1305504A1 - Aufhängung - Google Patents
AufhängungInfo
- Publication number
- EP1305504A1 EP1305504A1 EP01962582A EP01962582A EP1305504A1 EP 1305504 A1 EP1305504 A1 EP 1305504A1 EP 01962582 A EP01962582 A EP 01962582A EP 01962582 A EP01962582 A EP 01962582A EP 1305504 A1 EP1305504 A1 EP 1305504A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sliding
- guide
- angle
- secondary structure
- sliding guide
- 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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
-
- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/246—Fastening of diaphragms or stator-rings
-
- 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
- F05D2230/00—Manufacture
- F05D2230/60—Assembly methods
- F05D2230/64—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins
- F05D2230/642—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins using maintaining alignment while permitting differential dilatation
Definitions
- the invention relates to the suspension of an annular secondary structure on a primary structure, in particular a stator structure subjected to hot gas on a housing structure of a gas turbine, in the form of a so-called spoke centering, according to the preamble of claim 1.
- Spoke centers are used to hang ring-shaped secondary structures centrally on mostly ring-shaped or tubular primary structures. Radial relative movements of the structures with respect to one another should largely be possible without constraining forces and deformations, while maintaining the concentricity. The principle is particularly useful when very different thermal expansions of two concentric structures have to be compensated for. If the secondary structure is relatively elastic, i.e. is not dimensionally stable, it should be stabilized and stiffened as much as possible via the suspension.
- a turbomachine with a rotor and stator which has at least one specially designed guide vane ring.
- the latter is designed as a self-supporting component with reinforcement on the inner shroud and with a segmented, outer shroud.
- the guide vane ring is positioned via a spoke centering with at least three "spokes" in the housing of the turbomachine.
- the sliding guides of the spoke centering have bearing journals in bearing bushes, the linear direction of movement running radially in each slide guide, based on the guide vane ring and housing.
- the object of the invention is to find a suspension for a ring-shaped secondary structure on a primary structure in the manner of a spoke centering with at least three differently oriented sliding guides, which prevents or largely reduces constraining forces and deformations as well as wear and tear and which stiffeners flexible secondary structures regardless of whether the number of sliding guides is even or odd.
- each sliding guide is inclined by an angle ⁇ to the radial direction of the structures, so that the relative movement receives a radial and a tangential component.
- guide clamps with all of their disadvantages are avoided with a high degree of certainty.
- rotationally symmetrical expansion or contraction of the secondary structure this also makes a small relative rotation to the primary structure due to kinematics, which is tolerable in most cases.
- non-homogeneous locally different expansion or contraction of the secondary structure, it is elastically deformed to a certain extent, in deviation from the circular ring shape.
- the resulting the sliding guide forces are much smaller than when clamping a conventional radial spoke centering.
- the shape deviations will also be kept within tolerable limits.
- the shape stability increasing effect of the invention can lead to the fact that the secondary structure can be made more elastic and lighter than with a conventional spoke centering.
- FIG. 1 shows a cross-section through a suspension with 8 sliding guides, showing two different, rotationally symmetrical expansion states of the secondary structure
- FIG. 2 shows a partial cross section through the suspension according to FIG. 1 with an asymmetrical stretching state of the secondary structure
- FIG. 3 shows a sliding guide with rigid sliding block and groove
- FIG. 4 shows a sliding guide with pivotable sliding block and groove
- FIG. 5 shows a sliding guide with pin and bush.
- the representations according to FIGS. 1 and 2 are largely schematic in order to reproduce the invention as simply and understandably as possible.
- the suspension 1 in the form of a so-called spoke centering comprises eight sliding guides 10 which are evenly distributed over the circumference and whose angular spacing is therefore 45 ° in each case.
- the structures coupled by means of the suspension 1, primary structure 2 and secondary structure 6, are specifically only indicated as hatched fragments in the upper area of FIG. 1.
- a closed polygon with rigid chords S 1 to S8 and with joints between the chords in the slide guides 10 is considered here.
- the eight radial straight lines starting from the center of the structure and each offset by 45 ° only show the structure-related radial direction R to or in the tendon joints and are not to be understood as structural elements.
- the sliding guide 10 on the bisector (45 °) of the right upper quadrant shows that the linear direction of motion device L of the sliding guide 10 deviates by an angle ⁇ from the radial direction R and thus has in fact a radial and a tangential movement component.
- the angle ⁇ is preferably chosen to be greater than the maximum friction angle to be expected in the sliding guide 10, so that there is no fear of the sliding pair jamming with high certainty.
- the sliding guides 10 of which are inclined clockwise by an angle ⁇ to the radial direction R the change in length (extension, contraction) of a tendon leads to a sliding movement in the sliding guide at the clockwise end of the tendon, since only one slide guide is inclined by more than the friction angle to the transverse direction of the tendon per tendon, whereas the other slide guide is approximately transverse to the tendon.
- the slide guide 10 is provided with additional information at the top right in FIG. 1.
- the linear direction of movement L of the sliding guide 10 and the angle ⁇ between R and L, the straight extension V of the chord S8, the transverse direction / transverse direction T - at a 90 ° angle - to the chord can be recognized by dash-dotted lines S8 and the angle ßeff between L and T.
- the so-called friction cone of the sliding guide 10 is indicated by dots, the tip angle of which is twice as large as the friction angle ⁇ .
- the tendons S1 to S8 are each shown twice, namely as a solid and a dashed line.
- the solid tendon polygen stands for a "cold” contracted state of the secondary structure 6.
- the dashed, larger tendon polygon stands for a "hot”, evenly stretched state of the secondary structure 6.
- the primary structure 2 should - for the sake of simplicity - remain geometrically unchanged so that the part of the sliding guides 10 belonging to the primary structure does not move. With the same stretch - or contraction - all The tendon joint angles of the tendon polygon remain unchanged. For the real secondary structure 6, this means that its diameter changes, but not its shape (circular ring), the concentric position to the primary structure 2 also remaining.
- chord polygon - and thus the secondary structure - executes a small rotary movement by an angle ⁇ in the clockwise direction during the transition from the solid position to the dashed position, specifically as a result of the angle ⁇ of the sliding guides 10. In practical applications, this is due to the invention , little twist for the structural function usually irrelevant.
- FIG. 2 shows an asymmetrical stretching of the tendon polygon.
- FIG. 2 shows an asymmetrical stretching of the tendon polygon.
- the sliding guide 10 in the "joint” between S1 and S8 makes an evasive movement at an angle ⁇ obliquely upward to the right.
- the tendon S8 is pivoted about its right “joint” to the tendon S7, but its length is practically not changed.
- the kinematics predefined by the slide guides 10 means that a movement in the slide guide 10 between S1 and S8 upward to the right with a constant chord length of S8 only results in a negligibly small movement in the slide guide between S8 and S7 - to the bottom left - which is practically not representable in Figure 2.
- the tendon S8 de facto only swivels around its "joint” to S7, the tendon S7 remains in its position, just like the tendon S2.
- the "joint angle" between the tendons S2 / S 1 Change S 1 / S8 and S8 / S7.
- Figures 3 to 5 show specific embodiments of sliding guides 1 1 to 13 with the inclined position ⁇ according to the invention.
- FIG. 3 shows a sliding guide 11 with a sliding block 14 in a groove 17.
- the groove 17 is integrated in the primary structure 3, the sliding block 14 is firmly connected to the secondary structure 7 or machined out of it.
- the sliding block 14 is deliberately shown with rounded corners and with sliding surface play in the groove 17.
- play and corner rounding being intended to prevent excessive friction, wear and clamping.
- FIG. 4 also shows a sliding guide 12 with a groove 18 integrated in the primary structure 4 and with a sliding block 15, the latter, however - in contrast to FIG. 3 - being pivotable about an axis 16 which is firmly connected to the secondary structure 8.
- a sliding guide 12 with a groove 18 integrated in the primary structure 4 and with a sliding block 15, the latter, however - in contrast to FIG. 3 - being pivotable about an axis 16 which is firmly connected to the secondary structure 8.
- FIG. 5 finally shows a sliding guide 13 with a pin 19 in a bushing 21.
- the pin 19 is here firmly connected to the primary structure 5, the circular cylindrical bushing 21 is integrated in a thickening of the secondary structure 9.
- the lateral surface 20 of the pin 19 is spherical and rotationally symmetrical in shape in order to avoid edge wear or jamming during structural rotation. In extreme cases, the spherical shape can correspond to a spherical shape.
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10037837A DE10037837C2 (de) | 2000-08-03 | 2000-08-03 | Aufhängung |
DE10037837 | 2000-08-03 | ||
PCT/DE2001/002888 WO2002012680A1 (de) | 2000-08-03 | 2001-08-01 | Aufhängung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1305504A1 true EP1305504A1 (de) | 2003-05-02 |
EP1305504B1 EP1305504B1 (de) | 2005-10-19 |
Family
ID=7651191
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01962582A Expired - Lifetime EP1305504B1 (de) | 2000-08-03 | 2001-08-01 | Aufhängung |
Country Status (8)
Country | Link |
---|---|
US (1) | US6752591B2 (de) |
EP (1) | EP1305504B1 (de) |
JP (1) | JP2004506113A (de) |
AT (1) | ATE307270T1 (de) |
CA (1) | CA2391082A1 (de) |
DE (2) | DE10037837C2 (de) |
ES (1) | ES2250458T3 (de) |
WO (1) | WO2002012680A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10359730A1 (de) * | 2003-12-19 | 2005-07-14 | Mtu Aero Engines Gmbh | Turbomaschine, insbesondere Gasturbine |
JP4801373B2 (ja) * | 2005-05-16 | 2011-10-26 | 三菱重工業株式会社 | タービンの車室構造 |
US7523616B2 (en) * | 2005-11-30 | 2009-04-28 | General Electric Company | Methods and apparatuses for assembling a gas turbine engine |
KR20090020685A (ko) * | 2006-06-09 | 2009-02-26 | 벨 헬리콥터 텍스트론 인크. | 방향성 노즐을 갖는 엔진 배기 시스템 |
WO2008097247A2 (en) * | 2006-06-09 | 2008-08-14 | Bell Helicopter Textron Inc. | Engine exhaust system |
US9551238B2 (en) * | 2012-09-28 | 2017-01-24 | United Technologies Corporation | Pin connector for ceramic matrix composite turbine frame |
FR3005120A1 (fr) * | 2013-04-24 | 2014-10-31 | Aircelle Sa | Structure de redressement de flux pour nacelle |
EP3228837B1 (de) * | 2016-04-08 | 2019-08-28 | Ansaldo Energia Switzerland AG | Anordnung von turboantrieben |
US11028944B2 (en) * | 2018-05-31 | 2021-06-08 | Textron Innovations Inc. | Duct support |
DE102020203840A1 (de) | 2020-03-25 | 2021-09-30 | MTU Aero Engines AG | Gasturbinenbauteil |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE716219C (de) | 1934-09-18 | 1942-07-03 | Siemens Ag | Nichtbrennbare UEberzuege ergebendes Anstrichmittel |
FR957575A (de) * | 1946-10-02 | 1950-02-23 | ||
DE1004201B (de) | 1955-09-27 | 1957-03-14 | Siemens Ag | Anordnung zur zentrisch waermebeweglichen Abstuetzung von Turbinenteilen ueber Radialbolzen |
US2996279A (en) * | 1956-07-16 | 1961-08-15 | English Electric Co Ltd | Gas turbines |
US2938336A (en) * | 1956-12-06 | 1960-05-31 | United Aircraft Corp | Gas flow straightening vanes |
CH363661A (de) | 1958-02-14 | 1962-08-15 | Int Stal Company Ab | Verbindung zwischen zwei ringförmigen Maschinenelementen |
US3529904A (en) * | 1968-10-28 | 1970-09-22 | Westinghouse Electric Corp | Diaphragm seal structure |
US3965066A (en) * | 1974-03-15 | 1976-06-22 | General Electric Company | Combustor-turbine nozzle interconnection |
FR2469566A1 (fr) | 1979-11-12 | 1981-05-22 | Snecma | Perfectionnements aux dispositifs de fixation de turboreacteurs multiflux |
US5088279A (en) * | 1990-03-30 | 1992-02-18 | General Electric Company | Duct support assembly |
US5076049A (en) | 1990-04-02 | 1991-12-31 | General Electric Company | Pretensioned frame |
FR2677953B1 (fr) | 1991-06-19 | 1993-09-10 | Snecma | Structure de suspension arriere d'un turboreacteur. |
FR2728015B1 (fr) * | 1994-12-07 | 1997-01-17 | Snecma | Distributeur monobloc sectorise d'un stator de turbine de turbomachine |
DE19807247C2 (de) * | 1998-02-20 | 2000-04-20 | Mtu Muenchen Gmbh | Strömungsmaschine mit Rotor und Stator |
-
2000
- 2000-08-03 DE DE10037837A patent/DE10037837C2/de not_active Expired - Fee Related
-
2001
- 2001-08-01 WO PCT/DE2001/002888 patent/WO2002012680A1/de active IP Right Grant
- 2001-08-01 EP EP01962582A patent/EP1305504B1/de not_active Expired - Lifetime
- 2001-08-01 ES ES01962582T patent/ES2250458T3/es not_active Expired - Lifetime
- 2001-08-01 DE DE50107765T patent/DE50107765D1/de not_active Expired - Lifetime
- 2001-08-01 CA CA002391082A patent/CA2391082A1/en not_active Abandoned
- 2001-08-01 JP JP2002517943A patent/JP2004506113A/ja not_active Withdrawn
- 2001-08-01 US US10/182,798 patent/US6752591B2/en not_active Expired - Fee Related
- 2001-08-01 AT AT01962582T patent/ATE307270T1/de not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO0212680A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2002012680A1 (de) | 2002-02-14 |
DE50107765D1 (de) | 2006-03-02 |
DE10037837A1 (de) | 2002-03-28 |
CA2391082A1 (en) | 2002-02-14 |
US6752591B2 (en) | 2004-06-22 |
JP2004506113A (ja) | 2004-02-26 |
DE10037837C2 (de) | 2002-08-01 |
US20030021689A1 (en) | 2003-01-30 |
EP1305504B1 (de) | 2005-10-19 |
ES2250458T3 (es) | 2006-04-16 |
ATE307270T1 (de) | 2005-11-15 |
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