A bleed valve for regulating a fluid flow through a bleed hole defined by a casing of a gas turbine engine compressor , the bleed valve comprises a central axis , a piston and a static structure , the static structure generally surrounds the piston , and is arranged to define in axial ...
there being disposed a valve assembly in the cavity which has a rotatable valve element which can be moved between a first open position permitting flow through the drain outlet and a second closed position preventing flow through the drain outlet, the valve assembly having a portion which partial...
This inventive flow-closing bleed valve assembly is intended for use in starting a turbofan engine having a compressor section with: a fore-to-aft air flow therein; deteriorated clearances; and aft portion, and overboard duct outlets. Accordingly, the principal object of this invention is to prov...
Bleed member and bleed valve assembly 专利名称：Bleed member and bleed valve assembly 发明人：Richard C. O'Brien 申请号：US09642857 申请日：20000821 公开号：US06446658B1 公开日：20020910 专利内容由知识产权出版社提供 专利附图：摘要：The present invention relates to a bleed member provided in a ...
BLEED MEMBER AND BLEED VALVE ASSEMBLY
Rotational displacement of the shaft clockwise causes the first seal to seal off the source of fluid pressure from the valve chamber, while allowing for fluid discharge through the drain port. Rotational displacement of the shaft in a second, opposed direction connects the pressure-operated device ...
To perform positive isolation while performing maintenance, repair or shutdown activities, these valves can be used in the following way. The block valve is closed first. The shutdown side of the block and bleed assembly is then drained/vented/purged to make ready for maintenance. ...
Bleed valve assembly A bleed valvefor regulating a fluid flow through a bleed holedefined by a casingof a gas turbine enginecompressor, the bleed valvecomprises a central axis, a pistonand a static structure, the static structuregenerally surrounds the pisto... Rayer, Quintin G.,Edwards, ...
Medical Valve with Improved Back-Pressure Sealing A medical valve transitions between an open mode that permits fluid flow, and a closed mode that prevents fluid flow. To that end, the medical valve has a housing with an inlet and an outlet, a rigid member movably mounted within the hou.....
The valve assembly (10) to charge and bleed the spring store cylinders (12), for the brakes of heavy commercial motor vehicles, has two magnetic valves (14,16) and a 3/3 valve (18), with a housing (20) for at least three control pistons (22,24,26) and a switch piston (28). ...