Title:
HIGH-STABILITY VALVE ARRANGEMENT FOR A GOVERNOR VALVE
Document Type and Number:
WIPO Patent Application WO2002036999
Kind Code:
A8
Abstract:
A valve arrangement (10) for reducing the instability of fluid flow in a compressible flow governor valve includes a cutoff plug (12) with a lateral concave surface (14) and an end portion (16) having a substantially circular cross section, and a seat (30) with a convex surface (32). The lateral concave surface (14) and the end portion (16) of the cutoff plug (12) define an abrupt cutoff corner (18). The radius (re) of the end portion (16) of the cutoff plug (12) is less than the radius (Rs) of the seat (30). The radius of curvature (R) of the seat (30) is less than the radius of curvature (rq) of the lateral concave surface (14) of the cutoff plug (12). The configuration of the cutoff plug (12) and seat (30) enhances the annular flow pattern beneath the cutoff plug (12) at all lift positions thus reducing flow instability.
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Inventors:
HARDIN JAMES R (US)
Application Number:
PCT/US2001/048091
Publication Date:
November 20, 2003
Filing Date:
October 30, 2001
Export Citation:
Assignee:
ELLIOTT TURBO (US)
HARDIN JAMES R (US)
HARDIN JAMES R (US)
International Classes:
F01D17/14; F01D25/00; F16K1/12; F16K1/34; F16K1/36; F16K1/42; F16K25/00; F16K47/00; (IPC1-7): F16K1/12
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