IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0621197
(2007-01-09)
|
등록번호 |
US-8281600
(2012-10-09)
|
발명자
/ 주소 |
- Chen, Wei
- Thomas, Stephen Robert
- Myers, Geoffrey David
- Turaga, Vijay Kumar
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
16 |
초록
▼
A method for cooling a combustor assembly having a cooling passage. The method includes providing at least one thimble including an inner surface that defines a first opening, a second opening that is downstream from the first opening, and a flow channel that extends between the first opening and th
A method for cooling a combustor assembly having a cooling passage. The method includes providing at least one thimble including an inner surface that defines a first opening, a second opening that is downstream from the first opening, and a flow channel that extends between the first opening and the second opening. The flow channel has a converging portion and a recovery portion that is downstream from the converging portion. The method also includes inserting the at least one thimble into at least one inlet that is defined in at least one sleeve such that cooling air is discharged from the flow channel into the cooling passage.
대표청구항
▼
1. A method for cooling a combustor assembly including a cooling passage defined between at least one sleeve and an outer surface of a combustion component, said method comprising: providing at least one thimble that includes an outer surface, a lip portion at least partially defined by the outer su
1. A method for cooling a combustor assembly including a cooling passage defined between at least one sleeve and an outer surface of a combustion component, said method comprising: providing at least one thimble that includes an outer surface, a lip portion at least partially defined by the outer surface of the at least one thimble, and an inner surface that defines a first opening, a second opening downstream from the first opening, and a flow channel extending therebetween, wherein the flow channel is formed with a converging portion and a recovery portion downstream from the converging portion, a diameter of the converging portion that decreases from the first opening to the recovery portion, a diameter of the recovery portion is substantially constant therethrough;inserting the at least one thimble into at least one inlet defined in the at least one sleeve such that the lip portion engages the outer surface of the at least one sleeve, wherein the flow channel is coupled in flow communication with the cooling passage, and such that cooling air discharged from the flow channel facilitates impingement cooling of the combustion component. 2. A method in accordance with claim 1 wherein inserting the at least one thimble into the at least one inlet further comprises inserting a pair of thimbles into a pair of inlets defined in the at least one sleeve such that a line formed by the pair of thimbles substantially aligns with a direction of the cooling passage airflow. 3. A method in accordance with claim 2 wherein inserting a pair of thimbles into a pair of inlets further comprises positioning the thimbles with respect to each other such that the upstream thimble creates a low-pressure area adjacent an opening of the downstream thimble. 4. A method in accordance with claim 1 wherein inserting at least one thimble further comprises inserting at least one thimble including a wall opening into the inlet such that air flowing through the cooling passage discharges into the flow channel of the at least one thimble and facilitates capturing pressure of the air flowing through the cooling passage. 5. A method in accordance with claim 1 wherein said inserting at least one thimble further comprises inserting at least one thimble including a diffusing portion downstream from the recovery portion into the inlet, wherein the diffusing portion facilitates reducing pressure losses of cooling air entering the cooling passage. 6. A thimble for channeling cooling air into a cooling passage of a combustor assembly, said thimble comprising: an outer surface extending from a sleeve into the cooling passage defined between said sleeve and an outer surface of a combustion component;an opposite inner surface that defines a first opening, a second opening downstream from said first opening, and a flow channel extending therebetween, said flow channel comprises a converging portion and a recovery portion downstream from said converging portion, said converging portion has a diameter that decreases from said first opening to said recovery portion, said recovery portion has a substantially constant diameter therethrough, wherein said flow channel is configured to channel air into the cooling passage; anda lip portion at least partially defined by said outer surface and coupled to an outer surface of the sleeve. 7. A thimble in accordance with claim 6 wherein said flow channel further comprises a diffusing portion downstream from said recovery portion, said diffusing portion has a diameter that increases from said recovery portion to said second opening. 8. A thimble in accordance with claim 6 wherein said converging portion comprises a frustoconical section having a diameter that decreases from an upstream end of said frustoconical section to a downstream end of said frustoconical section. 9. A thimble in accordance with claim 8 wherein said converging portion further comprises an inlet section extending from said first opening to said frustoconical section, said inlet section has a diameter that is greater than said frustoconical section diameter. 10. A thimble in accordance with claim 6 further comprising an opening extending between said outer surface and said inner surface, said opening configured to channel air from the cooling passage into said flow channel. 11. A thimble in accordance with claim 10 wherein said wall opening has a substantially circular shape. 12. A thimble in accordance with claim 10 wherein said wall opening has a non-circular shape. 13. A thimble in accordance with claim 6 wherein said first opening is one of elliptical and kidney-shaped. 14. A thimble in accordance with claim 6 wherein said outer surface of said thimble further comprises a flange defined by the lip portion and a passage portion aligned substantially concentrically with and downstream from said flange, each of said flange and said passage portion surrounds said flow channel and has an outer diameter, said flange extends circumferentially around said first opening and at least some of said converging portion, said flange diameter is larger than said passage portion diameter. 15. A sleeve for use with a turbine engine, said sleeve comprising: an outer wall at least partially defining a ledge portion; andat least one projection extending outward from said outer wall, said at least one projection configured to channel cooling air into a cooling passage of a combustor assembly, said cooling passage defined between said sleeve and an outer surface of a combustion component, said at least one projection comprising:an outer surface extending from said outer wall into said cooling passage;an opposite inner surface that defines a first opening, a second opening downstream from said first opening, and a flow channel extending therebetween, said flow channel comprises a converging portion and a recovery portion downstream from said converging portion, said converging portion has a diameter that decreases from said first opening to said recovery portion, said recovery portion has a substantially constant diameter therethrough, wherein said flow channel is configured to channel air into said cooling passage; anda lip portion at least partially defined by said outer surface of said at least one projection, said lip portion is coupled to said ledge portion of said outer wall. 16. A sleeve in accordance with claim 15 wherein said flow channel further comprises a diffusing portion downstream from said recovery portion, said diffusing portion has a diameter that increases from said recovery portion to said second opening. 17. A sleeve in accordance with claim 15 wherein said converging portion comprises a frustoconical section having a diameter that decreases from an upstream end of said frustoconical section to a downstream end of said frustoconical section. 18. A sleeve in accordance with claim 17 wherein said converging portion further comprises an inlet section extending from said first opening to said frustoconical section, said inlet section has a diameter that is greater than said frustoconical section diameter. 19. A sleeve in accordance with claim 15 wherein said at least one projection comprises a plurality of projections configured to facilitate the development of a turbulent airflow. 20. A sleeve in accordance with claim 15 wherein said at least one projection comprises a plurality of projections configured to reduce combustion dynamics.
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