EP3350416A1 - Turbine à gaz munie d'un support amélioré du carter intérieur - Google Patents

Turbine à gaz munie d'un support amélioré du carter intérieur

Info

Publication number
EP3350416A1
EP3350416A1 EP16790918.3A EP16790918A EP3350416A1 EP 3350416 A1 EP3350416 A1 EP 3350416A1 EP 16790918 A EP16790918 A EP 16790918A EP 3350416 A1 EP3350416 A1 EP 3350416A1
Authority
EP
European Patent Office
Prior art keywords
diffuser
gas turbine
inner housing
housing
wear
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
Application number
EP16790918.3A
Other languages
German (de)
English (en)
Other versions
EP3350416B1 (fr
Inventor
Andre Botzen
Manfred Hartmann
Matthias Kleinenhammann
Jens Krause
Philippos Theodoros Mavrommatis
Milan Schmahl
Michael Winterstein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP3350416A1 publication Critical patent/EP3350416A1/fr
Application granted granted Critical
Publication of EP3350416B1 publication Critical patent/EP3350416B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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

Definitions

  • the invention relates to a gas turbine with a compressor, a central section and a turbine, wherein a diffuser adjoining the compressor and an inner housing communicating with the diffuser are arranged in the region of the central section.
  • Gas turbines comprising a compressor, a central section and a turbine are well known from the prior art and there is no further explanation in this respect.
  • the diffuser partially surrounds the rotor of the gas turbine in the area of the middle section.
  • the further section in the area of the middle section from the diffuser to the turbine is usually covered by an inner housing. Due to the thermi ⁇ 's expansions of the individual components of the gas turbine, an axial expansion compensation between the In nengeophuse and the diffuser is allowed in most cases. In this respect, they can not be linked together.
  • the diffuser overlaps the inner housing, where ⁇ intervenes at a web on the inner housing in a wider groove in Diffu ⁇ sor.
  • Object of the present invention is therefore to reduce the connection between the diffuser and the inner housing in terms of the total cost of installation and maintenance.
  • the generic gas turbine initially has a compressor, a central section and a turbine.
  • the embodiment of the compressor and the turbine are ways ⁇ Lich the embodiment according to the invention initially irrelevant, so that can be resorted to best embodiments of the prior art.
  • At least the compressor, the center section and the turbine together comprise a rotor, which thus penetrates into the gas turbine.
  • the concrete embodiment of the rotor is also respects ⁇ Lich the embodiment according to the invention initially irrelevant, so that in this respect proven embodiments can be used from the prior art.
  • a diffuser is subsequently arranged in the area of the middle section on the compressor.
  • the diffuser here has the task of deflecting the air flow from the compressor, so that it can be advantageously fed to a combustion chamber.
  • the diffuser has a diffuser housing section surrounding the rotor in sections in the middle section.
  • the diffuser housing section separates the airflow exiting the compressor from the rotor. Subsequent to the diffuser housing section is located in the Mittelsek ⁇ tion a rotor sections surrounding the inner housing.
  • the inner housing can move axially relative to the diffuser housing section, wherein the movement path in the axial direction is limited.
  • the diffuser housing section has at least one diffuser contact surface and the inner housing has at least one inner contact surface.
  • a plant of the diffuser contact surface on the inner bearing surface causes a limitation of the axial movement in a direction away from each other direction of movement.
  • Diffuser housing section is adjustable or that the inner contact surface is arranged relative to the inner housing adjustable. Although the adjustability of the inner contact surface or of the diffuser contact surface is functional enough, it can likewise be provided that both contact surfaces can be adjusted.
  • the wear supplement allows for easy replacement of this wear supplement in case of wear, without the need for reworking the otherwise fixed Be ⁇ marginal surfaces.
  • the adjustable contact surface is adjusted such that the distance between the diffuser bearing surface and the inner bearing surface between 0.01 mm and 2 mm.
  • a minimum clearance is required to allow collision-free mounting of the diffuser.
  • the distance should, however, be chosen as small as possible, with a distance of less than 2 mm being advantageous.
  • the distance Zvi ⁇ rule the diffuser contact surface and the inner contact surface see be- is 0.2 mm and 0.8 mm.
  • the minimum distance of 0.2 mm ensures the collision-free mounting of the diffuser on the inner ⁇ housing even with slight transverse movements during the assembly process.
  • the maximum distance of 0.8 mm ensured.
  • the adjusting screw is he ⁇ aims, if one of the components to be connected has a limit istssteg.
  • the adjusting screw is arranged axially adjustable in particular bar ⁇ ⁇ DERS advantageous manner.
  • the diffuser housing section can have at least one boundary web extending in the direction of the rotor.
  • the inner housing has at least one boundary web extending away from the rotor.
  • the wear insert comprises, in some exemplary prior ⁇ , one of the two components a limiting groove in which the Ver ⁇ schlauerbeilage is arranged in a particularly advantageous manner.
  • the arrangement of the wear ⁇ supplement in the Begrenzungsnut leads to a reliable storage of the wear supplement and a secure support thereof.
  • the inner housing has at least one limiting groove opening away from the rotor.
  • the diffuser housing section has at least one delimiting groove opening toward the rotor.
  • Diffuser housing section are arranged. It should be noted that the number, size and arrangement of the segmented wear shims makes it possible to apply all the contact surfaces arranged on the adjusting screws.
  • the inner housing In order to reduce formation of a gap between the diffuser and the inner casing to a minimum and the central axis of rotation position, in particular the inner housing administratzustel ⁇ len, it is furthermore advantageous if the inner housing rela ⁇ tive to the diffuser in the periphery can be supported. It is advantageous if between the
  • Diffuser housing portion and the inner housing at least one detachable Zentrierbeilage is arranged, which causes a Zentrie ⁇ tion of the components to each other.
  • the support and centering, in particular of the inner housing can be effected.
  • the centering of the inner housing leads relative to the diffuser body portion to a friction between the components.
  • the advantageous use of a detachable centering shim favors the replacement of the centering shim in case of wear.
  • Diffuser housing section and the inner housing will this in arranged advantageously in the Begrenzungsnut, wherein the boundary web rests with its outer periphery of the Zentrierbeilage.
  • the centering of the inner ⁇ takes place housing relative to the diffuser by a system of the outer circumference of the boundary web with intermediate Zentrierbei ⁇ position on the groove bottom of the boundary groove.
  • the position of the Zentrierbeilage is gesi ⁇ chert by the wear supplement advantageously.
  • the position of the centering ⁇ rierbeilage by mounting the wear insert in axia ⁇ ler direction can be secured by suitable means.
  • suitable means for this purpose, it is especially before ⁇ geous when the Zentrierbeilage vonin- on an end face having a least along a flank of the limiting groove he ⁇ stretching retaining tab.
  • a bag is arranged in vorteilhaf ⁇ ter manner in the wear supplement or in the flank of Be ⁇ grenzungsnut in which engages the retaining tab.
  • the axial position of the centering supplement can be secured by the wear supplement while the retaining tab is engaged.
  • the Zentrierbei ⁇ position in the non-installed state has a different shape from a circular shape.
  • the assembly of the diffuser with the inner housing results in a deformation of the centering shim, so that it subsequently assumes a substantially circular form.
  • the centering shim is formed in this case is initially un ⁇ significant, provided that can be achieved by a deformability of the initially non-round Zentrierbeilage backlash-free centering of the inner nengeophuses relative to the diffuser.
  • a particularly advantageous shape of the Zentrierbeilage in the undeformed state for example, by a local circumferentially distributed arranged waveform of the Zentrierbeilage achieved. To this extent may be, for example, on a semi-circle, two or more waves within the Zentrierbeilage vorgese ⁇ hen, which are pressed flat during the joining of the diffuser on the inner housing so that the Zentrierbeilage in the installed state substantially corresponds to the circular shape.
  • each Zentrierbeilage has a central retaining tab, in contrast, a corresponding pocket is arranged on a wear supplement, which causes the position of the Zentrierbeilage next to the backup in the axial direction as well as a determination of the position of the Zentrierbeilage in the circumferential direction.
  • each centering supplement further comprises at least two outer retaining tabs, so that the axial position of the Zentrierbeilage is secured.
  • the respective wear insert and the wear inserts zuge culinaryi ⁇ gene to external pockets, which are increased by a deformation compensation in the circumferential direction relative to the holding tabs.
  • 1 shows a schematic view of a gas turbine
  • 2 shows a section through the gas turbine in the connection ⁇ area between the diffuser and inner housing
  • FIG. 1 diagrammatically shows a gas turbine 01 which comprises a compressor 03 in a known manner, a turbine 04 and a middle section 05.
  • a rotor 06 extends through the gas turbine 01 from the compressor 03 via the middle section 05 to the turbine 04.
  • the compressor 03 is adjoined by a diffuser 11 which causes a supply of the compressed combustion air to a combustion chamber 07.
  • the center section 05 is considered in more detail, wherein first again the rotor 06 and the diffuser 11 can be seen.
  • This 11 comprises a rotor 06 partially surrounding the diffuser housing portion 12.
  • An inner housing 21 then surrounds the rotor 06 at these ends.
  • the inner housing 21 is in this case movable axially relative to the diffuser housing section 12, whereby a rotatio on the components relative to each other by a locking pin 18 is prevented.
  • the limitation of the axial movement of the inner housing 21 relative to the diffuser housing section 12 is outlined in FIG. 3 below.
  • the inner housing 21, which 21 has a Be ⁇ delimiting groove 23 extending away from the rotor 06.
  • a wear insert 23 is disposed a ⁇ side, which forms an inner bearing surface 23 24th
  • a Zentrierbeilage 26 which 26 causes a Zent ⁇ tion of the components 12, 21 relative to each other.
  • an adjusting screw 14 is mounted, which 14 on a head a diffuser bearing surface 15 opposite to the réellean ⁇ position surface 24 has.
  • the outer periphery of the boundary web 13 forms a sliding surface 25, which 25 comes to the Zentrierbei ⁇ position 26 to the plant.
  • the adjusting screw 14 is adjusted for mounting such that when mounting the diffuser
  • an axially extending gap between 0.01 mm and 2 mm is present on the inner housing 21 between the diffuser bearing surface 15 and the inner bearing surface 24.
  • This axial gap between the contact surfaces 15, 24 may reduce to 0 during operation of the gas turbine, so that a further movement of the inner housing 21 is limited relative to the diffuser 11 in a direction away from each other.
  • the wear supplement 23 is disposed on an edge of the Begrenzungsnut 22.
  • the Ver ⁇ schlauerbeilage 23 is fi by means of a fastening screw 27 xed.
  • the position of the Zentrierbeilage 26 through the fastening web 13 and the groove bottom of Be ⁇ fastening groove 22 is fixed.
  • the axial position of the Zentrierbei ⁇ position 26 is secured by a at one end of the Zentrierbeilage 26 radially outwardly extending retaining ⁇ tab 28 secured. This 28 is held by a locking pin ⁇ .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne une turbine à gaz comportant un compresseur, une section centrale et une turbine, un diffuseur (11) étant agencé à l'extrémité du compresseur. Ce diffuseur (11) comprend une partie (12) de carter de diffuseur entourant par endroits le rotor (06) dans la section centrale, un carter intérieur (21) entourant par endroits le rotor (06) étant agencé par la suite. Le carter intérieur (21) est mobile de manière limitée dans une direction axiale par rapport à la partie (12) de carter de diffuseur, son déplacement étant limité dans une direction les éloignant l'un de l'autre par appui d'une surface d'appui de diffuseur (15) contre une surface d'appui intérieure (24). Afin de réduire les coûts d'entretien, la surface d'appui de diffuseur (15) et/ou la surface d'appui intérieure sont agencées sur une garniture d'usure (14) amovible.
EP16790918.3A 2015-11-11 2016-10-26 Turbine à gaz munie d'un support amélioré du carter intérieur Active EP3350416B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015222172.5A DE102015222172B4 (de) 2015-11-11 2015-11-11 Gasturbine mit verbesserter Lagerung des Innengehäuses
PCT/EP2016/075808 WO2017080826A1 (fr) 2015-11-11 2016-10-26 Turbine à gaz munie d'un support amélioré du carter intérieur

Publications (2)

Publication Number Publication Date
EP3350416A1 true EP3350416A1 (fr) 2018-07-25
EP3350416B1 EP3350416B1 (fr) 2020-01-15

Family

ID=57233403

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16790918.3A Active EP3350416B1 (fr) 2015-11-11 2016-10-26 Turbine à gaz munie d'un support amélioré du carter intérieur

Country Status (3)

Country Link
EP (1) EP3350416B1 (fr)
DE (1) DE102015222172B4 (fr)
WO (1) WO2017080826A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114857077B (zh) * 2022-04-22 2023-01-10 烟台东德实业有限公司 一种稳定型高速离心空压机

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2220034B (en) * 1988-06-22 1992-12-02 Rolls Royce Plc Aerodynamic loading in gas turbine engines
US5249921A (en) * 1991-12-23 1993-10-05 General Electric Company Compressor outlet guide vane support
US7527469B2 (en) * 2004-12-10 2009-05-05 Siemens Energy, Inc. Transition-to-turbine seal apparatus and kit for transition/turbine junction of a gas turbine engine

Also Published As

Publication number Publication date
WO2017080826A1 (fr) 2017-05-18
DE102015222172B4 (de) 2017-10-19
EP3350416B1 (fr) 2020-01-15
DE102015222172A1 (de) 2017-05-11

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