Control valve with radial seals

摘要

A control valve is provided that includes a valve body, a valve element, a first radial seal, and a second radial seal. The valve body forms an inlet, an outlet, and a fluid flow passage therebetween. The valve element is disposed at least partially within the valve body, and is movable between at least a closed position and an open position. When the valve element is in the closed position, fluid is restricted from flowing through the fluid flow passage. When the valve element is in the open position, the fluid is allowed to flow through the fluid flow passage. The first radial seal is disposed against the valve body at a first distance from a centerline of the control valve. The second radial seal is disposed against the valve body at a second distance from the centerline, the second distance being greater than the first distance.

主权项

1. A gas turbine engine comprising:
a compressor having an inlet and an outlet and operable to supply compressed air; a combustor coupled to receive a first portion of the compressed air from the compressor and operable to supply combusted air; a turbine coupled to receive the combusted air from the combustor and a second portion of the compressed air from the compressor; and a control valve coupled between the compressor and the combustor, the control valve comprising: a valve body forming an inlet, an outlet, and a fluid flow passage therebetween; a valve element disposed at least partially within the valve body and movable between at least:
a closed position, in which fluid is restricted from flowing through the fluid flow passage; andan open position, in which the fluid is allowed to flow through the fluid flow passage;an inner radial seal disposed against the valve body at a first distance from a centerline of the control valve, the first distance comprising a shortest distance between the inner radial seal and the centerline; andan outer radial seal disposed against the valve body at a second distance from the centerline, the second distance comprising a shortest distance between the outer radial seal and the centerline, the second distance being greater than the first distance, wherein the difference between the second distance and the first distance is less than the first distance; wherein the inner radial seal and the outer radial seal are axially aligned with one another along the centerline of the control valve.