IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0711306
(2007-02-27)
|
등록번호 |
US-7823390
(2010-11-22)
|
발명자
/ 주소 |
- Eluripati, Ravi Praveen S.
- Ball, Jr., David Wesley
- Whaling, Kenneth Neil
- Zhang, Hua
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
2 |
초록
▼
A system is provided for directing air from plural compressor ports to provide cooling and/or sealing air to an associated turbine site. A first flow from a pressure stage of the compressor has a first pressure and temperature. A second flow from another pressure stage of the compressor has a second
A system is provided for directing air from plural compressor ports to provide cooling and/or sealing air to an associated turbine site. A first flow from a pressure stage of the compressor has a first pressure and temperature. A second flow from another pressure stage of the compressor has a second pressure and temperature. The first and second pressures/temperatures are different. An ejector has two inlets for receiving the first and second flows, and output for combining the first and second flows into a third flow. The pressure and temperature of the third flow are different from the first and second pressures and temperatures. A bypass line is connected between the first flow and the third flow, and provides a bypass flow. A mixer combines the bypass flow and the third flow into a fourth flow. The fourth flow has a pressure and temperature intermediate the pressure and temperature of the bypass flow and the third flow. The mixer comprises inner and outer sections. The inner section is generally cylindrical in cross section and has a plurality of holes therein. The angle between the direction of the bypass flow and the direction of the third flow, when the bypass flow meets the third flow in the mixer, is less than about 90 degrees.
대표청구항
▼
What is claimed is: 1. A system for directing air from plural ports in a compressor to provide cooling and/or sealing air to an associated turbine site, the system comprising: a first flow from a pressure stage of the compressor, said first flow having a first pressure and a first temperature, a se
What is claimed is: 1. A system for directing air from plural ports in a compressor to provide cooling and/or sealing air to an associated turbine site, the system comprising: a first flow from a pressure stage of the compressor, said first flow having a first pressure and a first temperature, a second flow from another pressure stage of the compressor having a second pressure and a second temperature, wherein said second pressure and temperature are different than said first pressure and temperature, an ejector having a first inlet for receiving the first flow and a second inlet for receiving the second flow, said ejector having an ejector output for combining the first and second flows into a third flow, said third flow having a third pressure and a third temperature, wherein said third pressure and temperature are different from said first and second pressures and temperatures, a bypass line connected between said first flow and said third flow, said bypass line providing a bypass flow, a mixer for combining the bypass flow and the third flow to provide a fourth flow, said mixer comprising an inner section and an outer section, said inner section generally cylindrical in cross section and having a plurality of holes circumferentially disposed therein, each of said holes having an axial direction, said fourth flow having a pressure and temperature intermediate the pressure and temperature of said bypass flow and said third flow, said mixer having a first mixing input receiving the third flow, and a second mixing input receiving the bypass flow, wherein an angle between the axial direction of each of the holes and the direction of said third flow, is more than 0 degrees and less than 90 degrees. 2. A system according to claim 1, wherein the angle between the axial direction of each of the holes and the direction of said third flow, is between 0 and about 45 degrees. 3. A system according to claim 2, wherein said mixer includes an odd number of holes in said inner section. 4. A system according to claim 1, wherein an angle between an inner section axial direction and the axial direction of each of the holes is less than about 50 degrees. 5. A system for mixing flows from a compressor, the system comprising: an ejector for receiving a first flow and a second flow from said compressor, and an ejector output for combining said first and second flows into a third flow, said first flow having a first pressure and a first temperature, and said second flow having a second pressure and a second temperature, wherein said first and second pressures are different and said first and second temperatures are different, a bypass connected between said first flow and said third flow, said bypass providing a bypass flow, a mixer for reducing back pressure on the ejector output and combining said bypass flow and said third flow to provide a fourth flow, said fourth flow having a pressure and temperature intermediate said pressure and temperature of the bypass flow and the third flow, said mixer comprising a first concentric member and a second concentric member, a portion of said first concentric member contained within said second concentric member; wherein said first concentric member has a plurality of holes circumferentially disposed therein for allowing said bypass flow to mix with said third flow, each of the plurality of holes having an axial direction, an angle between the axial direction of each of the plurality of holes and an axial direction of the first concentric member is more than 0 degrees and less than 90 degrees. 6. The system for mixing flows according to claim 5, wherein each of said plurality of holes are configured to pass from an exterior surface of said first concentric member to an interior surface of said first concentric member, wherein, the angle between the axial direction of each of the plurality of holes and an axial direction of the first concentric member is between 0 degrees and about 50 degrees. 7. The system for mixing flows according to claim 6, wherein the angle between the axial direction of each of the plurality of holes and an axial direction of the first concentric member is between about 10 degrees and about 45 degrees. 8. The system for mixing flows according to claim 5, wherein said first concentric member is centrally disposed within said second concentric member. 9. The system for mixing flows according to claim 5, wherein said first concentric member is eccentrically disposed within said second concentric member. 10. A system for mixing flows from a compressor, the system comprising: an ejector for receiving a first flow and a second flow from said compressor, and an ejector output for combining said first and second flows into a third flow, a bypass connected between said first flow and said third flow, said bypass providing a bypass flow, a mixer for combining said bypass flow and said third flow to provide a fourth flow, wherein the mixer comprises a first inner member and a second outer member, a portion of said first inner member is located within said second outer member, said first inner member having a plurality of holes circumferentially disposed therein, each of said plurality of holes having an axial direction, said plurality of holes allowing the bypass flow located within said second outer member to mix with the third flow located within said first inner member; wherein, an angle between the axial direction of each of the plurality of holes and an axial direction of the first inner member is more than 0 degrees and substantially less than 90 degrees, and the bypass flow intersects with said third flow at a mixing angle that reduces back pressure on the ejector output. 11. The system for mixing flows according to claim 10, wherein each of said plurality of holes are configured to pass from an exterior surface of said first inner member to an interior surface of said first inner member, wherein, the angle between the axial direction of each of the plurality of holes and the axial direction of the first inner member is between 0 degrees and about 50 degrees. 12. The system for mixing flows according to claim 11, wherein the angle between the axial direction of each of the plurality of holes and the axial direction of the first inner member is between about 10 degrees and about 45 degrees. 13. The system for mixing flows according to claim 10, wherein said first inner member is centrally disposed within said second outer member. 14. The system for mixing flows according to claim 10, wherein said first inner member is eccentrically disposed within said second outer member.
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