WO2016010663A1 - Systeme d'etancheite elliptique - Google Patents

Systeme d'etancheite elliptique Download PDF

Info

Publication number
WO2016010663A1
WO2016010663A1 PCT/US2015/035902 US2015035902W WO2016010663A1 WO 2016010663 A1 WO2016010663 A1 WO 2016010663A1 US 2015035902 W US2015035902 W US 2015035902W WO 2016010663 A1 WO2016010663 A1 WO 2016010663A1
Authority
WO
WIPO (PCT)
Prior art keywords
sealing
clock position
elliptical
semielliptical
rotor
Prior art date
Application number
PCT/US2015/035902
Other languages
English (en)
Inventor
Roderick Mark Lusted
Bruce William BRISSON
Franco Sarri
Farshad Ghasripoor
Original Assignee
General Electric Comapny
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
Priority claimed from US14/330,183 external-priority patent/US20140321993A1/en
Application filed by General Electric Comapny filed Critical General Electric Comapny
Publication of WO2016010663A1 publication Critical patent/WO2016010663A1/fr

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
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
    • F01D11/12—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator using a rubstrip, e.g. erodible. deformable or resiliently-biased part
    • F01D11/122—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator using a rubstrip, e.g. erodible. deformable or resiliently-biased part with erodable or abradable material
    • 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
    • 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
    • F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
    • F01D11/14—Adjusting or regulating tip-clearance, i.e. distance between rotor-blade tips and stator casing
    • F01D11/20—Actively adjusting tip-clearance
    • F01D11/22—Actively adjusting tip-clearance by mechanically actuating the stator or rotor components, e.g. moving shroud sections relative to the rotor
    • 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
    • F16J15/44—Free-space packings
    • F16J15/445—Free-space packings with means for adjusting the clearance
    • 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
    • F05D2250/00—Geometry
    • F05D2250/10—Two-dimensional
    • F05D2250/14—Two-dimensional elliptical

Landscapes

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

Abstract

Certains modes de réalisation de l'invention concernent un système d'étanchéité elliptique s'utilisant avec un rotor et un carter de stator d'une machine rotative. Le système d'étanchéité elliptique comprend une pluralité de segments d'étanchéité ; et un revêtement abradable d'épaisseur uniforme, qui est déposé sur chacun de la pluralité des segments d'étanchéité, de sorte que la pluralité des segments d'étanchéité pourvus du revêtement abradable présentent une forme sensiblement elliptique dans toutes les conditions de rotation et d'état stationnaire du rotor. Une machine rotative comprenant ce système d'étanchéité elliptique est également décrite.
PCT/US2015/035902 2014-07-14 2015-06-16 Systeme d'etancheite elliptique WO2016010663A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14/330,183 2014-07-14
US14/330,183 US20140321993A1 (en) 2011-01-07 2014-07-14 Elliptical sealing system

Publications (1)

Publication Number Publication Date
WO2016010663A1 true WO2016010663A1 (fr) 2016-01-21

Family

ID=53443055

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2015/035902 WO2016010663A1 (fr) 2014-07-14 2015-06-16 Systeme d'etancheite elliptique

Country Status (1)

Country Link
WO (1) WO2016010663A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050129976A1 (en) * 2003-12-12 2005-06-16 General Electric Company Use of spray coatings to achieve non-uniform seal clearances in turbomachinery
US20070132193A1 (en) * 2005-12-13 2007-06-14 Wolfe Christopher E Compliant abradable sealing system and method for rotary machines
GB2500793A (en) * 2012-03-27 2013-10-02 Gen Electric A brush seal system with elliptical clearance

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050129976A1 (en) * 2003-12-12 2005-06-16 General Electric Company Use of spray coatings to achieve non-uniform seal clearances in turbomachinery
US20070132193A1 (en) * 2005-12-13 2007-06-14 Wolfe Christopher E Compliant abradable sealing system and method for rotary machines
GB2500793A (en) * 2012-03-27 2013-10-02 Gen Electric A brush seal system with elliptical clearance

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