EP1961921A1 - Joint d'étanchéité pour turbomachine - Google Patents

Joint d'étanchéité pour turbomachine Download PDF

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Publication number
EP1961921A1
EP1961921A1 EP07003920A EP07003920A EP1961921A1 EP 1961921 A1 EP1961921 A1 EP 1961921A1 EP 07003920 A EP07003920 A EP 07003920A EP 07003920 A EP07003920 A EP 07003920A EP 1961921 A1 EP1961921 A1 EP 1961921A1
Authority
EP
European Patent Office
Prior art keywords
steam
sealing
seal
vapor
turbomachine
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Withdrawn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
EP07003920A
Other languages
German (de)
English (en)
Inventor
Edwin Gobrecht
Achim Hammann
Dirk Knudsen
Bernd Leu
Karsten Peters
Jan Dr. Walkenhorst
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 EP07003920A priority Critical patent/EP1961921A1/fr
Publication of EP1961921A1 publication Critical patent/EP1961921A1/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Withdrawn legal-status Critical Current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
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/02—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type
    • F01D11/04—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type using sealing fluid, e.g. steam
    • 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
    • F05D2220/31—Application in turbines in steam 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
    • F05D2220/70—Application in combination with
    • F05D2220/72—Application in combination with a steam turbine
    • 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
    • F05D2240/50—Bearings
    • 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
    • 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
    • F05D2240/60—Shafts
    • F05D2240/63—Glands for admission or removal of fluids from shafts

Definitions

  • the invention relates to a turbomachine, comprising a housing and a rotatably mounted within the housing shaft, further comprising a live steam inlet channel and at least one acted upon with sealing steam seal.
  • turbomachinery Hydraulic turbines, steam and gas turbines, wind turbines, centrifugal pumps and centrifugal compressors as well as propellers are summarized under the collective term turbomachinery. All these machines have in common that they serve the purpose of extracting energy from one fluid in order to drive another machine or, conversely, to supply energy to a fluid in order to increase its pressure.
  • fluid means liquids or gases that can perform flowing movements.
  • a turbine as an embodiment of a turbomachine must form a system sealed off from the atmosphere in order to operate optimally.
  • the rotatable components such.
  • B. a shaft and lying opposite the rotatable components fixed components such.
  • As a turbine housing shaft seals used. These shaft seals serve to ensure that the flow medium in the turbine does not flow out into the atmosphere and, secondly, that the atmospheric air does not penetrate into the turbine.
  • the shaft seals are usually formed with vapor deposition and / or suction chambers.
  • the previously used shaft seals comprise a shaft vapor vapor system and a steam vapor system.
  • the shaft vapor vapor system includes a barrier vapor system consisting of a shaft vapor vapor collector, including a shaft seal steam supply and discharge valve.
  • the Wrasendampfsystem usually includes a Wrasendampfsammler, Wrasendampfabsaugung and Wrasendampfkondensator. In order to achieve a sealing effect, so-called sealing gas is supplied from the sealing steam system.
  • the amount of steam required for this purpose is comparatively large and is usually made available by steam turbine external sealing steam sources.
  • a turbomachine comprising a housing and a rotatably mounted within the housing shaft, further comprising a live steam inlet channel and at least one acted upon with sealing steam seal, wherein a conduit device for fluidic connection of the live steam inlet channel and the seal is present.
  • the invention is based on the idea that it does not appear necessary to provide the required amount of sealing steam for the sealing of sources external of the steam turbine. It is rather the way set to use instead of external sources of steam turbine internal steam turbine sources. For this purpose, it is proposed to form a line device for fluidic connection, which connects the live steam inlet channel and the seal. The invention is therefore based on the idea that part of the live steam can be used to supply the seal with sealing steam.
  • novel shaft seals such.
  • B. brush seals are used on the shaft passages of high, medium and low pressure turbine sections.
  • Such brush seals have multiple sealants in the form of bristles which possibly touch the rotating shaft during operation.
  • the seal is preferably formed with a sealing steam chamber can be acted upon with sealing steam.
  • the line device for the fluidic connection of the live steam inlet channel and the seal is designed in such a way that the pressure of the barrier steam derived from the live steam is constant during operation.
  • the line device comprises at least one line with a diverter and valves.
  • the conduit device is designed such that the sealing vapor is fed into a sealing vapor chamber of the seal.
  • the invention is also based on the idea that previously required external steam supply systems for the sealing steam supply are not needed.
  • the advantage is achieved that external auxiliary steam supplies are saved and the auxiliary steam may possibly be made available to the process otherwise.
  • FIG. 1 is a compact turbine part 1 and a low-pressure turbine part 2 to see.
  • the compact turbine part 1 comprises both a high-pressure part 3 and a medium-pressure part 4.
  • the low-pressure turbine part 2 has a double-flow design.
  • a shaft vapor vapor system 5 can be seen.
  • the shaft-type vapor-vapor system 5 comprises a barrier-vapor system 6 and a vapor-vapor system 7.
  • the barrier-vapor system 6 comprises a barrier-vapor source 8 and a condenser 9.
  • the barrier-vapor source 8 and the condenser 9 are connected to lines 11 via valves 10.
  • the Wrasendampfsystem 7 includes a Wrasendampfkondensator 12, which are connected via lines 13 and valves 14 with seals 15 of the compact turbine section 1 and the low-pressure turbine part 2.
  • the sealing steam system 6 comprises a shaft sealing steam collector including shaft sealing steam supply and discharge valves.
  • the Wrasendampfsystem 7 also includes a Wrasendampfsammler and Wrasendampfabsaugung.
  • the low-pressure turbine part 2 as an embodiment of a turbomachine comprises a housing and a shaft rotatably mounted within the housing.
  • the low-pressure turbine part further comprises a live steam inlet duct 16 and at least one with sealing steam acted upon seal 15.
  • the low-pressure turbine part is characterized in that a conduit device 17 is provided for fluidically connecting the live steam inlet channel 16 and the seal 15.
  • the live steam inlet channel 16 comprises a branch 18, wherein in operation a portion of the live steam at the branch 18 is fed via the line device 17 to the seal 15.
  • the seal 15 has a sealing steam acted upon by sealing steam chamber.
  • the line device 17 is designed in such a way that the pressure of the sealing steam derived from the live steam is constant during operation.
  • the line device 17 in addition to a line on a valve, a diversion device and a controller.
EP07003920A 2007-02-26 2007-02-26 Joint d'étanchéité pour turbomachine Withdrawn EP1961921A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07003920A EP1961921A1 (fr) 2007-02-26 2007-02-26 Joint d'étanchéité pour turbomachine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07003920A EP1961921A1 (fr) 2007-02-26 2007-02-26 Joint d'étanchéité pour turbomachine

Publications (1)

Publication Number Publication Date
EP1961921A1 true EP1961921A1 (fr) 2008-08-27

Family

ID=38235207

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07003920A Withdrawn EP1961921A1 (fr) 2007-02-26 2007-02-26 Joint d'étanchéité pour turbomachine

Country Status (1)

Country Link
EP (1) EP1961921A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2420650A3 (fr) * 2009-05-05 2012-03-21 General Electric Company Turbine à vapeur, système et procédé de fonctionnement

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE576969C (de) * 1929-09-07 1933-05-19 Siemens Schuckertwerke Akt Ges Einrichtung zur Verringerung der Stopfbuechsenleckdampfverluste bei Dampfturbinen
CH245781A (de) * 1945-05-25 1946-11-30 Escher Wyss Maschf Ag Dichtungseinrichtung an Dampfturbinen mit mindestens zwei, gegen verschieden hohe Drücke abdichtenden Labyrinthdichtungen.
DE1105431B (de) * 1959-04-22 1961-04-27 Sulzer Ag Einrichtung zur Lieferung von Sperrdampf fuer Dichtungsstellen in Dampfkraftanlagen,insbesondere Dampfturbinenanlagen
DE2253839A1 (de) * 1972-10-11 1974-04-18 Bbc Brown Boveri & Cie Sperrmedium-labyrinthdichtung
DE2841631A1 (de) * 1978-08-31 1980-03-06 Bbc Brown Boveri & Cie Sperrdampfsystem und verwendung desselben
US4793141A (en) * 1986-11-14 1988-12-27 Hitachi, Ltd. Gland sealing steam supply system for steam turbines
DE4313805A1 (de) * 1993-04-27 1994-11-03 Siemens Ag Dichtungsanordnung für zumindest eine Durchführung einer Welle durch ein Gehäuse
DE19538674A1 (de) * 1995-10-17 1997-04-24 Siemens Ag Verfahren und Einrichtung zur Erzeugung von überhitztem Dampf aus Sattdampf sowie Dampfkraftanlage
EP1048823A2 (fr) * 1999-04-29 2000-11-02 ABB Alstom Power (Schweiz) AG Alimentation de vapeur de barrage

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE576969C (de) * 1929-09-07 1933-05-19 Siemens Schuckertwerke Akt Ges Einrichtung zur Verringerung der Stopfbuechsenleckdampfverluste bei Dampfturbinen
CH245781A (de) * 1945-05-25 1946-11-30 Escher Wyss Maschf Ag Dichtungseinrichtung an Dampfturbinen mit mindestens zwei, gegen verschieden hohe Drücke abdichtenden Labyrinthdichtungen.
DE1105431B (de) * 1959-04-22 1961-04-27 Sulzer Ag Einrichtung zur Lieferung von Sperrdampf fuer Dichtungsstellen in Dampfkraftanlagen,insbesondere Dampfturbinenanlagen
DE2253839A1 (de) * 1972-10-11 1974-04-18 Bbc Brown Boveri & Cie Sperrmedium-labyrinthdichtung
DE2841631A1 (de) * 1978-08-31 1980-03-06 Bbc Brown Boveri & Cie Sperrdampfsystem und verwendung desselben
US4793141A (en) * 1986-11-14 1988-12-27 Hitachi, Ltd. Gland sealing steam supply system for steam turbines
DE4313805A1 (de) * 1993-04-27 1994-11-03 Siemens Ag Dichtungsanordnung für zumindest eine Durchführung einer Welle durch ein Gehäuse
DE19538674A1 (de) * 1995-10-17 1997-04-24 Siemens Ag Verfahren und Einrichtung zur Erzeugung von überhitztem Dampf aus Sattdampf sowie Dampfkraftanlage
EP1048823A2 (fr) * 1999-04-29 2000-11-02 ABB Alstom Power (Schweiz) AG Alimentation de vapeur de barrage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2420650A3 (fr) * 2009-05-05 2012-03-21 General Electric Company Turbine à vapeur, système et procédé de fonctionnement

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