EP2426321A1 - Boîtier pour une turbine à gaz - Google Patents

Boîtier pour une turbine à gaz Download PDF

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Publication number
EP2426321A1
EP2426321A1 EP10175227A EP10175227A EP2426321A1 EP 2426321 A1 EP2426321 A1 EP 2426321A1 EP 10175227 A EP10175227 A EP 10175227A EP 10175227 A EP10175227 A EP 10175227A EP 2426321 A1 EP2426321 A1 EP 2426321A1
Authority
EP
European Patent Office
Prior art keywords
housing
manhole
lid
gas turbine
cover
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.)
Withdrawn
Application number
EP10175227A
Other languages
German (de)
English (en)
Inventor
Andreas Böttcher
Olga Deiss
Christopher Grandt
Wilhelm Scheidtmann
Holger Streb
Daniel Vogtmann
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
Priority to EP10175227A priority Critical patent/EP2426321A1/fr
Publication of EP2426321A1 publication Critical patent/EP2426321A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • 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
    • F01D25/08—Cooling; Heating; Heat-insulation
    • F01D25/14—Casings modified therefor
    • F01D25/145—Thermally insulated casings
    • 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
    • F05D2260/00—Function
    • F05D2260/80—Diagnostics

Definitions

  • the invention relates to a housing for a gas turbine, with a closable by a lid manhole.
  • Gas turbines and their functions are well known. Some embodiments of gas turbines have a single combustion chamber that extends toroidally about the engine axis of the gas turbine.
  • the housing of such an annular combustion chamber, also called support structure often lined with ceramic heat shield plates, so that the combustion chamber is effectively shielded from other components of the gas turbine. Due to the enormous thermal load of the heat shield plates, which occurs during operation of the gas turbine, it is necessary to inspect them from time to time when performing maintenance or inspection work and replace if necessary. The replacement takes place when defects such as cracks in the heat shield plates are detected, which endanger the safe continued operation of the gas turbine.
  • the invention is therefore based on the object to provide a housing for a gas turbine or for a combustion chamber of a gas turbine, which allows easy entry of a person or mechanic through a manhole and whose opening and closing is relatively quickly feasible.
  • the housing has a manhole as access for the interior of the gas turbine, which is designed circular and in which the cover in the manner of a bayonet lock on the edge of the manhole can be fastened.
  • the bayonet closure it is possible to attach the lid by turning the housing and solve it again.
  • This assembly and disassembly process is thus particularly time-saving, compared with known manhole covers that need to be attached time consuming with the help of several struts and screws to the housing. Due to the circular design of the manhole and the lid sitting therein still a stiffer version of the housing can be achieved, which reduces the sensitivity to acoustic stimuli. This leads to an extended operating range of the gas turbine.
  • the cover is rotatably supported in a lever-like hinge, wherein the lever-like hinge is articulated on an outer side of the housing.
  • This will be a folding mechanism for the lid reached over the hinge, so that the person who removes the lid from the housing of the gas turbine, after the release of the lid does not have to apply the weight to carry the lid.
  • the lid is thus supported by the gas turbine itself via the hinge and housing, which greatly facilitates opening and closing of the manhole for a fitter. This also makes it possible to make the lid more solid, which further increases its stability.
  • the hitherto possibly provided holding and stiffening brackets can thus be omitted.
  • the bayonet closure is expediently designed in such a way that the lid is pressed further against the edge of the manhole when the bayonet closure is closed.
  • the lid automatically closes when closing, which further increases the tightness of the connection.
  • the lid on its outer side a rotary wheel for manual rotation of the lid.
  • the rotary wheel is rigidly connected to the lid. A fitter can thus turn the lid comparatively easy, without a special tool is required for it.
  • the cover in the fastened state is preferably connected in a form-fitting manner to the hinge as a security against rotation by a securing element.
  • a securing element In order to prevent an unwanted loss of the fuse element, it is further preferred to secure the fuse element against loss.
  • a ceramic heat shield or a protective layer is provided according to a further advantageous embodiment on the inside of the lid.
  • the aforementioned housing may on the one hand be designed as an outer pressure jacket of the gas turbine, so that the manhole arranged in the pressure jacket allows a person access to the interior of the gas turbine.
  • the aforementioned housing may also be designed as the initially mentioned support structure of the combustion chamber of a gas turbine, which already has the manhole according to the invention with the matching cover arranged inside the gas turbine.
  • the gas turbine has two manholes, which one person must open one after the other to gain access to the combustion chamber of a gas turbine from outside.
  • the heat shield bricks arranged around the manhole on the support structure of the combustion chamber are designed such that, of course, the rotary movement of the cover is made possible.
  • the attachment of the ceramic or metallic heat shield plates is carried out in a known manner.
  • FIG. 1 shows a gas turbine 1 in a longitudinal partial section. It has inside a rotatably mounted about a machine axis 2 rotor 3, which is also referred to as a turbine runner.
  • each blade stage 10 is formed of two blade rings. Viewed in the flow direction of a hot gas 11 produced in the annular combustion chamber 6, follows in the hot gas duct 16 each of a row of vanes 13 formed by a blade 15 row 14.
  • the vanes 12 are attached to the stator, whereas the blades 15 a row 14 each by means of a disc 19 on the rotor 3 are attached.
  • a generator or a working machine (not shown) is coupled.
  • annular combustion chamber 6 and the turbine unit 8 are surrounded by a pressure jacket 23, which may also be referred to as outer housing 24.
  • FIG. 2 a part of the housing 24 of the gas turbine 1 is shown in perspective view.
  • the housing 24 can be designed on the one hand as a pressure jacket 23 of the gas turbine. It is also possible that the housing 24 is the support structure of the combustion chamber 6 ( FIG. 1 ).
  • a manhole 28 is provided in the housing 24 in the housing 24, a manhole 28 is provided.
  • the manhole 28 is circular in its contour and preferably so large that a person of average stature can easily pass through this manhole into the interior of the housing 24. Usually, oversized manholes 28 are avoided.
  • the manhole 28 is closed by a cover 30.
  • the lid 30 has a stepped edge 32, on the side wall in the circumferential direction extending webs 34 are arranged evenly distributed.
  • the webs 34 are part of a bayonet closure.
  • the manhole 28 has an edge 38 which is executed correspondingly stepped to the lid edge 32.
  • the edge 38 of the Manhole 28 are notches 40 are provided which correspond to the webs 34 and allow a bayonet-like attachment of the lid 30 at the edge 38 of the manhole 28.
  • the bayonet lock also includes the notches 40 and the edge 38 of the manhole 28, which can be engaged behind by the webs 34.
  • a rotary knob 42 For releasing and fixing the cover 30 on the housing 24, this comprises on its outwardly facing surface a rotary knob 42.
  • the closed by the cover 30 manhole 28 is in a further perspective view in FIG. 3 shown.
  • the lid 30 is rotatably supported in a lever-like hinge 44.
  • the hinge 44 has at its first end 46 a ring 48 which engages in an annular groove 50 of the lid 30. Thereby, the lid 30 can be rotated in the hinge 44.
  • the other end 52 of the hinge 44 is hinged to the outside 53 of the housing 24.
  • an anti-twist device in the form of a bolt 56 is provided, whereby the lid 30 is positively connected to the hinge 44.
  • the bolt 56 extends through each other cursing holes, which are provided both in the ring 48 and in the lid 30.
  • the bolt 56 has an endlessly circumferential groove 58, by means of which the securing element 54 can be hooked in a form-fitting manner with the edge of the bore arranged in the ring 48.
  • a ceramic heat shield 60, a metallic heat shield or a thermal protective layer can also be attached.
  • the fastening and the loosening of the cover 30 on the manhole 28 takes place in the manner typical for a bayonet closure: by placing the cover 30 on the edge 38 of the manhole 28 with the rotation of the lid 30 by means of the rotary wheel 42.
  • the rotation of the edge 38 of the manhole 28 is engaged behind by the webs 34, whereby the lid 30 is fixed to the housing 24.
  • Either the webs 34 or the edge 38 of the manhole 28 are designed so that the cover 30 is pressed with the closing rotation of the edge 38 on. This is done by inclined contact surfaces of web and edge.
  • This relatively simple attachment allows a particularly rapid and rapid creation of access to the interior of a room, regardless of whether it is a combustion chamber 17 or another inner space of the gas turbine 1.
  • the invention provides a housing 24 for a gas turbine 1, in which in the housing 24 a closable by a cover 30 manhole 28 is provided.
  • a cover 30 is provided in order to ensure a rapid opening and closing of the manhole 28, which further shortens the downtime of the gas turbine in the case of maintenance.
  • the manhole 28 is of circular design and the cover 30 can be fastened to the manhole 28 in the manner of a bayonet catch.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP10175227A 2010-09-03 2010-09-03 Boîtier pour une turbine à gaz Withdrawn EP2426321A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10175227A EP2426321A1 (fr) 2010-09-03 2010-09-03 Boîtier pour une turbine à gaz

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10175227A EP2426321A1 (fr) 2010-09-03 2010-09-03 Boîtier pour une turbine à gaz

Publications (1)

Publication Number Publication Date
EP2426321A1 true EP2426321A1 (fr) 2012-03-07

Family

ID=43533350

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10175227A Withdrawn EP2426321A1 (fr) 2010-09-03 2010-09-03 Boîtier pour une turbine à gaz

Country Status (1)

Country Link
EP (1) EP2426321A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3094404A1 (fr) * 2019-04-01 2020-10-02 Safran Aircraft Engines Ensemble pour turbomachine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3055321A (en) * 1958-11-24 1962-09-25 Babcock & Wilcox Co Access door
DE1509511A1 (de) * 1965-07-30 1969-06-12 Interatom Personenschleuse fuer Trennwaende von Druck- oder Sicherheitsraeumen
DE1957271A1 (de) * 1969-11-14 1971-05-27 Draegerwerk Ag Verschlussklappe fuer Taucherkammern
DE2102317A1 (de) * 1971-01-19 1972-08-03 Drägerwerk AG, 2400 Lübeck Bajonettverschluß für Türen von Druckkammern
DE2211388A1 (de) * 1972-03-09 1973-09-20 Draegerwerk Ag Verriegelbarer bajonettverschluss von mit einer druckwarneinrichtung ausgeruesteten druckkammer
US4883002A (en) * 1987-10-31 1989-11-28 Degussa Aktiengesellschaft Furnace closing mechanism for industrial furnaces
DE19821889A1 (de) * 1998-05-15 1999-11-18 Asea Brown Boveri Verfahren und Vorrichtung zur Durchführung von Reparatur- und/oder Wartungsarbeiten im Innengehäuse einer mehrschaligen Turbomaschine
WO2004023042A1 (fr) 2002-08-16 2004-03-18 Siemens Aktiengesellschaft Chambre de combustion de turbine a gaz

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3055321A (en) * 1958-11-24 1962-09-25 Babcock & Wilcox Co Access door
DE1509511A1 (de) * 1965-07-30 1969-06-12 Interatom Personenschleuse fuer Trennwaende von Druck- oder Sicherheitsraeumen
DE1957271A1 (de) * 1969-11-14 1971-05-27 Draegerwerk Ag Verschlussklappe fuer Taucherkammern
DE2102317A1 (de) * 1971-01-19 1972-08-03 Drägerwerk AG, 2400 Lübeck Bajonettverschluß für Türen von Druckkammern
DE2211388A1 (de) * 1972-03-09 1973-09-20 Draegerwerk Ag Verriegelbarer bajonettverschluss von mit einer druckwarneinrichtung ausgeruesteten druckkammer
US4883002A (en) * 1987-10-31 1989-11-28 Degussa Aktiengesellschaft Furnace closing mechanism for industrial furnaces
DE19821889A1 (de) * 1998-05-15 1999-11-18 Asea Brown Boveri Verfahren und Vorrichtung zur Durchführung von Reparatur- und/oder Wartungsarbeiten im Innengehäuse einer mehrschaligen Turbomaschine
WO2004023042A1 (fr) 2002-08-16 2004-03-18 Siemens Aktiengesellschaft Chambre de combustion de turbine a gaz

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3094404A1 (fr) * 2019-04-01 2020-10-02 Safran Aircraft Engines Ensemble pour turbomachine

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