摘要:
A vane cooling system for a gas turbine engine comprises a vane (20a) arranged on a stator and having a chamber (27,28) extending continuously from a radially inner end to a radially outer end of the vane. The vane (20a) has a first inlet (41) and a second inlet (42). A first cooling fluid feed (54) in communication with the first inlet (41) and a second cooling fluid feed (43) in communication with the second inlet (42). The first cooling fluid feed (54) has a higher pressure than the second cooling fluid feed (43). A flow adjustment device (45) is arranged for adjusting a flow of the second cooling fluid feed (43) into the second inlet (42). The chamber is divided by a restrictor plate (25, 26) to provide an inner chamber (27) and a wall-side chamber (28) bordering the inner chamber (27). The first inlet (41) enters the wall-side chamber (28) and the second inlet (42) enters the central chamber (27).
摘要:
An exemplary valve device for controlling flow of a turbomachine fluid includes a housing having a first inlet at a first elevation, a second inlet at a second elevation higher than the first elevation, and an outlet. A flow control member is within the housing. The flow control member in a positive g-force environment is biased toward a first position that permits flow through the first inlet to the outlet. The flow control member in a negative g-force environment is biased toward a second position that restricts flow through the first inlet to the outlet.
摘要:
A rotor wheel for an engine includes a plurality of impeller vanes (40) and a plurality of fluid passages (36) defined by adjacent impeller vanes. The fluid passages are radially disposed across at least a portion of the rotor wheel. One or more impeller inserts (44, 4A, 44B, 44C) may be disposed within one or more of the plurality of fluid passages (36), respectively. The impeller inserts (44, 4A, 44B, 44C) define an impeller passage (46) with a passage shape that controls a flow of fluid through the one or more of the plurality of fluid passages (36).
摘要:
A gas turbine engine has a turbine section, and a housing enclosing the turbine section, with a mount structure secured to the housing for mounting and including internal flow passages for delivering air to remote locations.
摘要:
A rotor wheel for an engine includes a plurality of impeller vanes (40) and a plurality of fluid passages (36) defined by adjacent impeller vanes. The fluid passages are radially disposed across at least a portion of the rotor wheel. One or more impeller inserts (44, 4A, 44B, 44C) may be disposed within one or more of the plurality of fluid passages (36), respectively. The impeller inserts (44, 4A, 44B, 44C) define an impeller passage (46) with a passage shape that controls a flow of fluid through the one or more of the plurality of fluid passages (36).
摘要:
The present invention relates to a method of manufacture of a channelling tube (10) with an insulating air gap (44) for transferring coolant from the outer platform to the inner platform of a hollow stator vane of a turbine. The purpose is to minimize heat transfer even at low flow rates of coolant in order to supply said coolant at the lowest possible temperature to the inner platform. The tube is realized by tight rolling a flat metal sheet (16) in order to obtain a tight spiral defining a tube with an outer diameter d; said tube is then released so that it expands via a spring effect to an outer diameter D; the circumferential ends of the spiral are attached to the adjacent layer to define a central passage (42) for the coolant and the spiral gap (44) that creates insulation layer(s) around the central passage.
摘要:
A gas turbine engine has a turbine section, and a housing enclosing the turbine section, with a mount structure secured to the housing for mounting and including internal flow passages for delivering air to remote locations.
摘要:
A gas turbine engine has a turbine section, and a housing enclosing the turbine section, with a mount structure secured to the housing for mounting and including internal flow passages for delivering air to remote locations.
摘要:
The invention relates to a sealing ring (60) intended to be pressed against a rotor disc of a turbine stage for an aircraft turbomachine, the ring being equipped with a plurality of anti-rotation pegs (66) for preventing it from rotating in relation to the rotor disc, each peg (66) protruding axially from a ring body (63) and having two opposite circumferential-end surfaces (72) which are intended respectively to be located facing two directly consecutive blades carried on the rotor disc. According to the invention, an axially opening slot (70) passes radially through at least one of the anti-rotation pegs (66).
摘要:
A system includes a turbine fuel controller (14). The turbine fuel controller (14) includes a purge control logic (40) configured to control a purge sequence of mixing an inert purge gas (36) with a first fuel (18) during a first fuel shutdown, wherein the purge sequence is configured to open a purge valve (34, 92, and 94) for the inert purge gas (36) before fully closing a fuel valve (26) for the first fuel (18).