Invention Application
US20150204294A1 TWO STAGE VALVE WITH CONICAL SEAT FOR FLOW SHUT-OFF AND SPOOL KNIFE EDGE FOR METERING FLOW CONTROL 有权
两级阀门,用于流量关闭和旋钮刀片,用于计量流量控制

  • Patent Title: TWO STAGE VALVE WITH CONICAL SEAT FOR FLOW SHUT-OFF AND SPOOL KNIFE EDGE FOR METERING FLOW CONTROL
  • Patent Title (中): 两级阀门,用于流量关闭和旋钮刀片,用于计量流量控制
  • Application No.: US14159723
    Application Date: 2014-01-21
  • Publication No.: US20150204294A1
    Publication Date: 2015-07-23
  • Inventor: Romaine O. EdwardsEdward B. ManringBrian M. Watson
  • Applicant: Cummins Inc.
  • Applicant Address: US IN Columbus
  • Assignee: Cummins Inc.
  • Current Assignee: Cummins Inc.
  • Current Assignee Address: US IN Columbus
  • Main IPC: F02M63/00
  • IPC: F02M63/00
TWO STAGE VALVE WITH CONICAL SEAT FOR FLOW SHUT-OFF AND SPOOL KNIFE EDGE FOR METERING FLOW CONTROL
Abstract:
A valve (100) comprises a barrel (104) having a central bore (110), an inlet (112), and an outlet (114, 116), and a spool (120) disposed for motion within the central bore, including a ball tip (128), a metering edge (130), and a bore (132). The spool is moveable between a closed position, wherein the ball tip engages a seat (142) to prevent fluid flow through the inlet and the metering edge is disposed in a lower chamber (148) of the central bore to prevent the fluid flow through the outlet, and an opened position, wherein the tip is spaced apart from the seat to permit fluid flow through the inlet and the spool bore into an upper chamber (154) of the central bore to equalize pressure on the spool, and the metering edge is disposed in a flow path of the outlet to permit fluid flow through the outlet.
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