MAGNETIC VALVE ARRANGEMENT FOR CONTROLLING FLOW OF FLUID TO A GAS TURBINE ENGINE COMPONENT

摘要

An arrangement for controlling flow of fluid to at least one component of a gas turbine engine, the arrangement comprising: a first conduit (24) for providing fluid to the component; a flow valve (30), for controlling the flow of fluid in the first conduit, having first and second configurations; a second conduit (54) for providing fluid to the flow valve to control the configuration of the flow valve; and a magnetic valve (60), for controlling the flow of fluid in the second conduit, having first and second configurations and including at least one ferromagnet (68) forming a portion of a magnetic circuit, whereby the configuration of the magnetic valve depends on the temperature of the ferromagnet; the member comprising ferromagnetic material (68) is thermally coupled to one of the group comprising the fluid in the, first conduit (24), the fluid in the second conduit (54) and the component; and the configuration of the flow valve is dependent on the configuration of the magnetic valve.