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특허 상세정보

Non-contact seal for a gas turbine engine

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F16J-015/447   
미국특허분류(USC) 277/412
출원번호 US-0129735 (2008-05-30)
등록번호 US8002285 (2011-08-08)
발명자 / 주소
대리인 / 주소
    GrayRobinson, PA
인용정보 피인용 횟수 : 16  인용 특허 : 20
초록

A seal comprises the combination of a primary seal and a secondary seal each of which acts on at least one shoe that is installed with clearance relative to one of a rotor and a stator in a position to create a non-contact seal therewith. The at least one shoe is provided with a surface geometry that influences the inertia of fluid flowing across the seal, and, hence, the velocity of the fluid and the pressure distribution across the seal, ultimately affecting the balance of forces applied to the seal.

대표
청구항

What is claimed is: 1. A seal for sealing a circumferential gap between a first machine component and a second machine component which is rotatable relative to the first machine component about a longitudinal axis, comprising:at least one shoe having a first surface and a second surface spaced from said first surface, said first surface extending along one of said first and second machine components in a position to create a non-contact seal therewith, said first surface being formed with a first area which extends longitudinally at a substantially const...

이 특허에 인용된 특허 (20)

  1. Dinc, Osman Saim; Demiroglu, Mehmet; Sarshar, Hamid Reza; Gladen, Paul; Hochhalter, Keith. Actuating mechanism for a turbine and method of retrofitting. USP2005016840519.
  2. Lang Ko-Wei (West Hills CA) Scharrer Joseph K. (Newbury Park CA) Beatty Robert F. (West Hills CA) Gaspar Nandor L. (Canoga Park CA). Adjustable gap hydrostatic element. USP1993085238308.
  3. Morrison Michael K.,GB3 ; Withers Peter A.,GB3 ; Jones Terence V.,GB3 ; Wood Peter E.,GB3. Brush seal. USP1998095799952.
  4. Kemsley Nicholas J,GBX. Brush seal and method for the manufacture of a brush seal. USP2000066079714.
  5. Wolfe Christopher Edward ; Turnquist Norman Arnold ; Bagepalli Bharat Sampathkumar. Brush seal for high-pressure rotor applications. USP2000066079945.
  6. Werner Klemens,DEX ; Gail Alfons,DEX ; Beichl Stefan,DEX. Brush seal having bristles tilted in the circumferential direction. USP1999085944320.
  7. Howe Harold (Orlando FL). Bundle and place method for the manufacture of brush seals. USP1993025183197.
  8. Hughes,Paul; Dunford, deceased,Joseph R.. Bushing arrangement for seal cavity protection in rotating fluid equipment. USP2006107121551.
  9. Weidner Robert H. (Glastonbury CT). Coolable seal assembly for a gas turbine engine. USP1987034650394.
  10. Laos, Hector Emilio. Damper assembly for a rotating shaft and methods for dampening shaft vibrations. USP2003056558041.
  11. Hughes,Paul. Externally mountable spiral adaptor. USP2008017314218.
  12. Schaeffler Arthur (Vierkirchen DEX) Werner Klemens (Munich DEX). Flexible brush-type seal with layered moving sealing surface. USP1986074600202.
  13. Braun Minel J. ; Choy Fred K.. Hybrid floating brush seal. USP1999125997004.
  14. Justak,John F.. Hydrodynamic brush seal. USP2007027182345.
  15. Arora Gulshan K.. Noncontacting finger seal with hydrodynamic foot portion. USP1998055755445.
  16. John F. Justak. Robust hydrodynamic brush seal. USP2002086428009.
  17. Wright Christopher,GBX ; Allen Steven V,GBX ; Saysell Guy,GBX ; Morgan Jonathan J,GBX. Seal. USP2001076254344.
  18. Hoffelner Herbert (Markt Indersdorf DEX). Sealing device for turbo engines and the like. USP1991065026252.
  19. Pellow Terence R. (Watford GB2) Glew Derek A. (Alveston GB2). Support member and a component supported thereby. USP1983104411594.
  20. Stec Philip F. (Medford MA). Trenched brush seal. USP1993015181728.

이 특허를 인용한 특허 피인용횟수: 16

  1. Dale, Timothy. Axial non-contact seal. USP2015089097350.
  2. Wilson, Ross; McCaffrey, Michael G.; Farris, John R.; Hall, Theodore W.; Korzendorfer, John W.; Vinson, Elizabeth F.; Jacques, Jeffrey Michael; Paul, John E.; Otero, Edwin; Stoner, Alan W.. Brush seal plate. USP2018059963991.
  3. Bidkar, Rahul Anil; Langenderfer, Matthew Michael; Deo, Hrishikesh Vishvas; Thatte, Azam Mihir. Film riding aerodynamic seals for rotary machines. USP2015069045994.
  4. Bidkar, Rahul Anil; Sarawate, Neelesh Nandkumar; Wolfe, Christopher Edward; Ruggiero, Eric John; Raj Mohan, Vivek Raja. Film riding seals for rotary machines. USP2017039587746.
  5. Gibson, Nathan Evan McCurdy; Bidkar, Rahul Anil; Thatte, Azam Mihir; Shastry, Narayana; Manickavasagam Sarojini, Hariharan. Flexible film-riding seal. USP20181210161259.
  6. Schmitz, John T.. Gas turbine engine and seal assembly therefore. USP20180910066496.
  7. Ackermann, William K.; Crawley, Jr., Clifton J.; Schwartz, Frederick M.. Non-contact seal assembly for rotational equipment. USP20181010094241.
  8. Ackermann, William K.; Crawley, Jr., Clifton J.; Schwarz, Frederick M.. Non-contact seal assembly for rotational equipment. USP20181010107126.
  9. D'Ambruoso, Tara L.. Non-contact seal with resilient biasing element(s). USP20190110184347.
  10. Bidkar, Rahul Anil; Wolfe, Christopher Edward; Ertas, Bugra Han; Delgado Marquez, Adolfo; Gibson, Nathan Evan McCurdy. Seal assembly for rotary machine. USP20190110190431.
  11. Peters, Christopher J.. Seal shoe for a hydrostatic non-contact seal device. USP20180710030531.
  12. Peters, Christopher J.. Seal shoe for a hydrostatic non-contact seal device. USP20190210208615.
  13. Justak, John F.. Seal with stacked sealing elements. USP2014028641045.
  14. Hanson, Russell B.. Segmented annular seal. USP20180910082039.
  15. Simpson, Alex J.; Peters, Christopher J.; Ryan, Zachary D.. Shaped spring element for a non-contact seal device. USP20180810060535.
  16. Caprario, Joseph T.. Thrust bearing system with inverted non-contacting dynamic seals for gas turbine engine. USP20181110119476.