PASSIVE BLEED VALVES WITH ADJUSTABLE PRESSURE THRESHOLD

A bleed valve (100) includes a housing (102) with an inlet (104) coupled to an outlet (106) by a duct (108), a guide tube (110) with an orifice (134) fixed in the housing (102) between the inlet (104) and the outlet (106), a piston (112), and baffle (162). The piston (112) is slideably supported on...

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Bibliographische Detailangaben
Hauptverfasser:	DeFelice, Robert, SIMPSON, Scott W, KAMP, Josh
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACTUATING-FLOATS AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING COCKS COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS DEVICES FOR VENTING OR AERATING ENGINE PLANTS IN GENERAL ENGINEERING ELEMENTS AND UNITS GAS-TURBINE PLANTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES STEAM ENGINES TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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Beschreibung
Zusammenfassung:	A bleed valve (100) includes a housing (102) with an inlet (104) coupled to an outlet (106) by a duct (108), a guide tube (110) with an orifice (134) fixed in the housing (102) between the inlet (104) and the outlet (106), a piston (112), and baffle (162). The piston (112) is slideably supported on the guide tube (110) and is movable between an open and a closed position (116, 118), the duct (108) fluidly coupling the inlet (104) and outlet (106) in the open position (116), the duct (108) fluidly separating the inlet (104) and outlet (106) in the closed position (118). The orifice (134) fluidly couples the inlet (104) and outlet (106) in the open and closed positions (116, 118) to move piston (112) between the open and closed positions (116, 118) according to differential pressure between the bleed valve inlet (104) and outlet (106). The baffle (162) is slideably supported by the guide tube (110) to set the differential pressure at which the piston (112) moves between the open and closed positions (116, 118). Gas turbines and differential pressure adjustment methods are also described.