Drain for a pressure sensing line
AssigneeROLLS-ROYCE plc
InventorMaitham Dib
Life of this patent
Estimating the term…
Abstract
A drain includes a vortex throttle, to remove water from a pressure sensing line. The vortex throttle resists the flow of air through it. Therefore, for a given diameter of inlet and outlet ports the mass flow rate through the vortex throttle is much smaller than through a plain hole of the same diameter. The inlet and outlet ports may therefore be made larger than in known arrangements (so reducing the risk of blockage), but the operation of the vortex throttle restricts the mass flow of air through the drain pipe (so minimizing the detrimental effects on the engine's operation). Collected water effectively drains from the pressure sensing line, without the disadvantages of known arrangements.
Claims12
A drain for a pressure sensing line, the drain comprising:
- a vortex throttle that includes:
- a first plate including an inlet port having a first diameter;
- a second plate having an inlet channel and a vortex chamber;
- the inlet channel comprising:
- a flare that is in fluid communication with the inlet port;
- and
- a throat that leads into the vortex chamber, the throat having a consistent second diameter along an entire length of the throat, the flare being angled relative to the throat;
- and
- a third plate including an outlet port that is in fluid communication with the vortex chamber.
Dependencies are inferred from the claim text.