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특허 상세정보

Non-contact seal for a gas turbine engine

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F16J-015/44   
미국특허분류(USC) 277/411; 277/412
출원번호 US-0132869 (2008-06-04)
등록번호 US-8172232 (2012-05-08)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    GrayRobinson, P.A.
인용정보 피인용 횟수 : 15  인용 특허 : 23

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 and labyrinth-type teeth that influence 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.


1. A sealing apparatus, comprising: a stationary first machine component and a second machine component which is radially spaced from and rotatable relative to said first machine component about a longitudinal axis, a circumferential gap being formed by said radial space between said first and second machine components;at least one shoe having a first surface and a second surface spaced from said first surface, said at least one shoe being subjected to aerodynamic forces applied in a direction along said longitudinal axis, said first surface being formed...

이 특허에 인용된 특허 (23)

  1. Dinc, Osman Saim; Demiroglu, Mehmet; Sarshar, Hamid Reza; Gladen, Paul; Hochhalter, Keith. Actuating mechanism for a turbine and method of retrofitting. USP2005016840519.
  2. Morrison Michael K.,GB3 ; Withers Peter A.,GB3 ; Jones Terence V.,GB3 ; Wood Peter E.,GB3. Brush seal. USP1998095799952.
  3. Kemsley Nicholas J,GBX. Brush seal and method for the manufacture of a brush seal. USP2000066079714.
  4. Wolfe Christopher Edward ; Turnquist Norman Arnold ; Bagepalli Bharat Sampathkumar. Brush seal for high-pressure rotor applications. USP2000066079945.
  5. Werner Klemens,DEX ; Gail Alfons,DEX ; Beichl Stefan,DEX. Brush seal having bristles tilted in the circumferential direction. USP1999085944320.
  6. Baily Frederick G. ; Rentz Lawrence E. ; Retzlaff Klaus M. ; Turnquist Norman A.. Brush seal mounting in supporting groove using flat spring with bifurcated end. USP2001126331006.
  7. Howe Harold (Orlando FL). Bundle and place method for the manufacture of brush seals. USP1993025183197.
  8. Orlowski David C. (Milan IL). Captured rotor seal. USP1992105158304.
  9. Laos, Hector Emilio. Damper assembly for a rotating shaft and methods for dampening shaft vibrations. USP2003056558041.
  10. Schaeffler Arthur (Vierkirchen DEX) Werner Klemens (Munich DEX). Flexible brush-type seal with layered moving sealing surface. USP1986074600202.
  11. Braun Minel J. ; Choy Fred K.. Hybrid floating brush seal. USP1999125997004.
  12. Justak,John F.. Hydrodynamic brush seal. USP2007027182345.
  13. Takashi Ono (Nagoya JPX) Tsuyoshi Suda (Nagoya JPX). Method of conveying strip materials. USP1983094406388.
  14. Arora Gulshan K.. Noncontacting finger seal with hydrodynamic foot portion. USP1998055755445.
  15. John F. Justak. Robust hydrodynamic brush seal. USP2002086428009.
  16. Wright Christopher,GBX ; Allen Steven V,GBX ; Saysell Guy,GBX ; Morgan Jonathan J,GBX. Seal. USP2001076254344.
  17. Hoffelner Herbert (Markt Indersdorf DEX). Sealing device for turbo engines and the like. USP1991065026252.
  18. Waggott John. Self-aligning sealing assembly for a rotating shaft. USP2000116145844.
  19. Orlowski,David C.; Hoelhe,Neil F.. Shaft seal assembly. USP2008077396017.
  20. Pellow Terence R. (Watford GB2) Glew Derek A. (Alveston GB2). Support member and a component supported thereby. USP1983104411594.
  21. Stec Philip F. (Medford MA). Trenched brush seal. USP1993015181728.
  22. Chaplin Gary Francis (Vernon CT) Schwarz Frederick Michael (Glastonbury CT). Turbine case cooling system. USP1977104053254.
  23. Dalton William S. (Chesterfield MA). Turbine radial adjustable labyrinth seal. USP1994115362072.

이 특허를 인용한 특허 피인용횟수: 15

  1. Bidkar, Rahul Anil; Cirri, Massimiliano; Thatte, Azam Mihir; Williams, John Robert. Aerodynamic seals for rotary machine. USP2016029255642.
  2. Bidkar, Rahul Anil; Langenderfer, Matthew Michael; Deo, Hrishikesh Vishvas; Thatte, Azam Mihir. Film riding aerodynamic seals for rotary machines. USP2015069045994.
  3. Schmitz, John T.. Gas turbine engine and seal assembly therefore. USP20180910066496.
  4. Ackermann, William K.; Crawley, Jr., Clifton J.; Schwartz, Frederick M.. Non-contact seal assembly for rotational equipment. USP20181010094241.
  5. Ackermann, William K.; Crawley, Jr., Clifton J.; Schwarz, Frederick M.. Non-contact seal assembly for rotational equipment. USP20181010107126.
  6. Chuong, Conway. Non-contact seal with monolithic/unitary carrier structure. USP20181010100657.
  7. D'Ambruoso, Tara L.. Non-contact seal with resilient biasing element(s). USP20190110184347.
  8. Bidkar, Rahul Anil; Thatte, Azam Mihir; Gibson, Nathan Evan McCurdy; Giametta, Andrew Paul. Pressure actuated film riding seals for turbo machinery. USP2015089115810.
  9. Bidkar, Rahul Anil; Wolfe, Christopher Edward; Ertas, Bugra Han; Delgado Marquez, Adolfo; Gibson, Nathan Evan McCurdy. Seal assembly for rotary machine. USP20190110190431.
  10. Peters, Christopher J.. Seal shoe for a hydrostatic non-contact seal device. USP20180710030531.
  11. Peters, Christopher J.. Seal shoe for a hydrostatic non-contact seal device. USP20190210208615.
  12. Justak, John F.. Seal with stacked sealing elements. USP2014028641045.
  13. Peters, Christopher J.; Hyland, Dave J.. Secondary seal device(s) with alignment tab(s). USP20190310221714.
  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.