| 摘要 |
<p>A fuel distributor valve (19) of a type suitable for use in the fuel supply system of a gas turbine engine is disclosed. The valve comprises: a valve body (22) through which a bore (24) extends between a fuel inlet (22) and a fuel outlet (23); a first valve seat (28) and associated valve member (30) provided across the bore (24), the first valve seat (28) defining at least one fuel-flow-port (26) and the valve member (30) being moveable between a closed position in which it substantially seals against the first valve seat (28) to close the or each fuel-flow-port (26) and an open position in which it is spaced from the first valve seat (28) to permit the flow of fuel through the or each fuel-flow-port (26) in a direction flowing from the fuel inlet (22) towards the fuel outlet (23). The valve is characterised by the provision of a second valve seat (29) and associated second valve member (31), wherein the second valve seat (29) defines at least one air-flow-port (27) and the second valve member (31) is moveable independently of the first valve member (30) between a closed position in which it substantially seals against the second valve seat (29) to close the or each air-flow-port (27) and an open position in which it is spaced from the second valve seat (29) to permit the flow of air through the or each air-flow-port (27) in a direction substantially opposed to said flow of fuel. The distributor valve (19) preferably takes the form of a weight type distributor valve in which the first valve member (30) is provided in the form of a weight.</p> |
