초록 ▼

A gas turbine engine is disclosed having a particle separator and an ejector disposed downstream of the particle separator and structured to entrain a dirty flow from the separator. A container of working fluid can be placed in flow communication with the ejector to provide an ejector flow to entrai

A gas turbine engine is disclosed having a particle separator and an ejector disposed downstream of the particle separator and structured to entrain a dirty flow from the separator. A container of working fluid can be placed in flow communication with the ejector to provide an ejector flow to entrain the dirty flow from the particle separator. Alternatively and/or additionally, the ejector can be configured to use a flow of working fluid from the gas turbine engine as an ejector flow.

대표청구항 ▼

1. An apparatus comprising: a gas turbine engine having an inlet structured to capture an inlet flow stream and deliver it to rotating turbomachinery components of the gas turbine engine;a particle separator having a dirty flow path and a clean flow path, the dirty flow path oriented to withdraw par

1. An apparatus comprising: a gas turbine engine having an inlet structured to capture an inlet flow stream and deliver it to rotating turbomachinery components of the gas turbine engine;a particle separator having a dirty flow path and a clean flow path, the dirty flow path oriented to withdraw particles from the inlet flow stream, the clean flow path in flow communication with the rotating turbomachinery components;a pressure source separate from the rotating turbomachinery components of the gas turbine engine and capable of producing a flow of pressurized fluid, the pressure source in flow communication with a conduit; andan ejector structured to receive the conduit and the dirty flow path, wherein the pressurized fluid flowing in the conduit is entrained with a dirty flow conveyed in the dirty flow path. 2. The apparatus of claim 1 wherein the pressure source is a pressure vessel capable of being charged. 3. The apparatus of claim 2, further comprising a valve disposed between the pressure vessel and the ejector, the valve operable to close off a flow from the pressure vessel to the ejector. 4. The apparatus of claim 3, further comprising a controller operable to control the valve, the controller configured to open the valve and permit a flow of pressurized fluid from the pressure vessel during a start of the gas turbine engine. 5. The apparatus of claim 1, further comprising a vehicle coupled with and capable of receiving power from the gas turbine engine, and which further includes a valve to discourage a flow of pressurized fluid in the conduit and in which the ejector is structured to receive a pressurized fluid from the gas turbine engine. 6. The apparatus of claim 1, wherein the pressurized fluid flowing through the ejector is at a relatively low pressure relative to the dirty flow flowing through the ejector such that the pressurized fluid attracts the dirty flow. 7. An apparatus comprising: a gas turbine engine having turbomachinery rotatable about a shaft axis and operable to produce a gas turbine engine flow, the gas turbine engine including a starting state and an operating state;a particle separator having a dirty flow path and a clean flow path, the dirty flow path structured to convey a dirty flow away from the gas turbine engine and the clean flow path structured to convey a clean flow to the turbomachinery of the gas turbine engine; andan ejector having a first flow path and a second flow path, the first flow path structured to receive the dirty flow of the particle separator, the second flow path structured to convey a working fluid to be entrained with the dirty flow path by ejector action, and the second flow path structured to receive a first source working fluid from a first source during the starting of the gas turbine engine and structured to receive a second source working fluid from a second source during the operating state. 8. The apparatus of claim 7, wherein the first source is a flow producing device and is coupled with a valve having first position that produces a first flow rate from the flow producing device and a second position that produces a second flow rate. 9. The apparatus of claim 8, wherein the valve is oriented at the second position during the operating state, the second position resulting in a lower flow rate than the first position. 10. The apparatus of claim 9, wherein the flow producing device includes a all enclosing an open interior sized to store a pressurized fluid. 11. The apparatus of claim 7, wherein the second source is the gas turbine engine and the second source working fluid is the gas turbine engine flow. 12. The apparatus of claim 7, wherein the starting of the gas turbine engine is characterized by a speed below an operating threshold. 13. The apparatus of claim 12, wherein the first source provides first source working fluid during an entire engine start sequence. 14. The apparatus of claim 12, wherein the first source working fluid and the second source working fluid are air. 15. An apparatus comprising: a gas turbine engine having turbomachinery components and an engine air particle separator for separating matter from an inlet air flow to create a dirty flow path and a clean flow path, the clean flow path structured to deliver a clean flow to be used with the turbomachinery components, the dirty flow path conveying a dirty flow; andmeans for entraining the dirty flow with a source flow from an engine start air source, the source flow independent of the clean flow. 16. The apparatus of claim 15, wherein the means includes a means for flowing the source flow. 17. A method comprising: starting a gas turbine engine including accelerating a rotatable compressor;activating a flow source apart from the rotatable compressor of the gas turbine engine to provide an ejector flow;forming a clean flow and a dirty flow downstream of an inlet of the gas turbine engine;routing the clean flow to the accelerating compressor; andentraining the dirty flow with the ejector flow. 18. The method of claim 17, wherein the activating includes actuating a valve to permit a pressurized tank to vent working fluid to create the ejector flow. 19. The method of claim 18, further comprising closing the valve to minimize a flow of working fluid from the pressurized tank. 20. The method of claim 18, further comprising transitioning the ejector flow from the pressurized tank to a separate source of the gas turbine engine.