Oil tank and scavenge pipe assembly of a gas turbine engine and method of delivering an oil and air mixture to same

摘要

An oil tank and scavenge pipe assembly of a gas turbine engine comprises a tank, and a scavenge pipe having a discharge portion disposed inside the tank. The discharge portion comprises a first portion having first and second ends. The first end is adapted to connect to an oil return line for receiving a mixture of oil and air. A bend extends from the second end downstream thereof relative to a flow of the mixture of oil and air through the scavenge pipe. The bend is configured to cause stratification of the mixture of oil and air as the mixture of oil and air flows through it. An outlet downstream of the bend delivers the mixture of oil and air to the tank. A method of delivering an oil and air mixture to a rotating oil volume of a tank of a gas turbine engine is also presented.

主权项

1. An oil tank and scavenge pipe assembly of a gas turbine engine, the assembly comprising:
a tank; and a scavenge pipe having a discharge portion, the discharge portion being disposed inside the tank, the discharge portion comprising:
a first portion having a first end and a second end, the first end being adapted to connect to an oil return line for receiving a mixture of oil and air; a bend extending from the second end of the first portion downstream thereof relative to a flow of the mixture of oil and air through the scavenge pipe, the bend having a curvature causing stratification of the mixture of oil and air as the mixture of oil and air flows through it, wherein the bend includes a plurality of perforations disposed on an outside thereof for bleeding oil; andan outlet downstream of the bend delivering the mixture of oil and air to the tank.