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특허 상세정보

Hydraulic actuator

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F16K-031/12    F15B-018/00    F15B-020/00   
미국특허분류(USC) 251/26 ; 60/404 ; 60/405 ; 60/416
출원번호 US-0715983 (1976-08-19)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 26  인용 특허 : 0
초록

A hydraulic actuator for a gate or like valve such as the main steam isolation valve in an electric power plant characterized in that the actuator is a compact self-contained unit secured to the valve housing and comprises a hydraulic cylinder having its piston rod connected to the movable valve member to open or close the valve, an air-driven hydraulic pump for pressurizing dual hydraulic circuits (active and standby) each of which includes an accumulator, an air-piloted accumulator control valve, an air-piloted directional control valve for the hydraul...

대표
청구항

A self-contained hydraulic actuator comprising a housing adapted to be secured to a valve housing for opening and closing said valve by hydraulically actuating a movable valve member is said valve housing; said actuator housing comprising a hydraulic motor having a hydraulically-actuated component adapted to be secured to said valve member, a reservoir, an air-driven hydraulic pump, and an air-piloted directional control valve operatively interconnected together for fluid pressure actuation of said component selectively in opposite directions in response...

이 특허를 인용한 특허 피인용횟수: 26

  1. Schwarz Robert A. (Rockford IL). Accumulator blow-back hydraulic circuit. USP1991065020322.
  2. Fortino, Richard D.; Maniez, Jr., David N.. Adapters and adapter systems for valve closure systems and valve closure assemblies. USP2005066908068.
  3. Samuel Holley McKell AU; Craig Grant Haroldsen ; Laren James Winkel ; Robert Edmund Gooch. Air over hydraulics actuator system. USP2002076416033.
  4. Annebique, André ; Schmidt, Jörg. Apparatus for hydraulically adjusting the blades of an impeller of an axial-flow fan. USP2011077971519.
  5. Kindermann Wolfgang (Mlheim/Ruhr DEX) Kloster Ernst (Mlheim/Ruhr DEX) Leupers Hans-Joachim (Mlheim/Ruhr DEX) Schaper Helmut (Mlheim/Ruhr DEX). Compact electrohydraulic drive for valves of turbomachines, especially turbines. USP1986124627235.
  6. Hall John L. (Maidenhead GB2). Control mechanism for pneumatic apparatus. USP1984104476678.
  7. Smith, Roddie R.; Jones, Richard C.; Dennistoun, Stuart M.. Dual control line system and method for operating surface controlled sub-surface safety valve in a well. USP2011027878252.
  8. Orr Willis P. (Lafayette LA). Emergency blowout preventer (BOP) closing system. USP1982034317557.
  9. Chang,David Yu Zhang. Engine valve actuation system. USP2006016988471.
  10. Cornell,Sean O.; Leman,Scott Alan. Engine valve actuation system. USP2006027004122.
  11. Cornell,Sean O.; Leman,Scott Alan. Engine valve actuation system. USP2006077069887.
  12. Cornell,Sean O.; Leman,Scott Alan. Engine valve actuation system. USP2007087258088.
  13. Cornell,Sean O.; Leman,Scott Alan. Engine valve actuation system. USP2007087255075.
  14. Cunningham Christopher E.. Fail-safe closure system for remotely operable valve actuator. USP2000046053202.
  15. Demerjian ; Jr. Paul D. ; Robbie Douglas A. ; Bernard Steven P.. Fail-safe electric hydraulic actuator. USP1999095950427.
  16. Coppola Patrick S. (Schenectady NY) Malone Paul E. (Schenectady NY). Fast opening valve apparatus. USP1986044585205.
  17. Olsen Gregory A.. Fluid metering system. USP2001106296226.
  18. Oyama, Hiroki. Hydraulic system for aircraft. USP2011108038094.
  19. Jansen, Keith Michael; Jansen, Kris Martin. Method and apparatus for pressurizing gas. USP2003096619930.
  20. Koplin, Joshua; Reeves, Samuel; Ahnert, Stephen; de Brun, Erik; Poff, Scott; Tedesco, Daniele Salvatore. Modular roller system. USP2013038397612.
  21. Smith, Roddie R.; Williams, Ronald D.; Wojciechowski, Robert. Multiple control line assembly for downhole equipment. USP2014028640769.
  22. Eijkelenberg, Tom; Jakus, Guy. Pneumatic gate valve with integrated pressurized gas reservoir. USP2016129512927.
  23. Jarrett Jawrence P. (Wind Gap PA). Remotely controlled operator for gas cylinder valve. USP1989104872482.
  24. Ulrich, Nathan; Koplin, Joshua; Reeves, Samuel; Ahnert, Stephen; De Brun, Erik. Roller system. USP2014078763506.
  25. Anisimov Veniamin M. (ulitsa Dekabristov ; 15 ; kv. 6 Biisk Altaiskogo kraya SUX) Belov Valentin V. (Klenovy bulvar ; 8 ; kv. 47 Moscow SUX) Verkevich Vsevolod I. (ulitsa Moldagulovoi ; 18 ; korpus 2. Shutoff valve actuator remote control system. USP1983024373698.
  26. Fortino, Richard D.; Maniez, Jr., David N.. Valve closure system and valve closure assembly having torque limiting. USP2005106957802.