Dynamic sealing assembly to accommodate differential thermal growth of fuel injector components
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02C-001/00
F02C-003/00
출원번호
UP-0590301
(2006-10-31)
등록번호
US-7703287
(2010-05-20)
발명자
/ 주소
Haggerty, Daniel
Hall, Troy
출원인 / 주소
Delavan Inc
대리인 / 주소
Wofsy, Scott D.
인용정보
피인용 횟수 :
3인용 특허 :
7
초록▼
A fuel injector for a gas turbine engine is disclosed which includes an inlet fitting for receiving fuel, a nozzle for issuing fuel into the gas turbine engine, an injector body extending between the inlet fitting and the nozzle and having and interior bore extending therethrough, and an elongated f
A fuel injector for a gas turbine engine is disclosed which includes an inlet fitting for receiving fuel, a nozzle for issuing fuel into the gas turbine engine, an injector body extending between the inlet fitting and the nozzle and having and interior bore extending therethrough, and an elongated fuel tube disposed within the interior bore of the injector body for delivering fuel from the inlet fitting to the nozzle. The fuel tube has an inlet end portion dynamically associated with the inlet fitting and an outlet end portion rigidly connected to the nozzle. An adapter is operatively associated with either the inlet end section of the fuel tube or a reception bore formed with the inlet fitting of the injector for accommodating a seal member in a manner that permits thermal growth of the injector body relative to the fuel tube.
대표청구항▼
What is claimed is: 1. A fuel injector for a gas turbine engine comprising: a) an inlet end portion for receiving fuel; b) an outlet end portion for issuing fuel into the gas turbine engine; c) an injector support body extending between the inlet end portion and the outlet end portion and having an
What is claimed is: 1. A fuel injector for a gas turbine engine comprising: a) an inlet end portion for receiving fuel; b) an outlet end portion for issuing fuel into the gas turbine engine; c) an injector support body extending between the inlet end portion and the outlet end portion and having an interior bore extending therethrough; d) an elongated fuel tube disposed within the interior bore of the injector body and having an inlet section operatively associated with the inlet end portion of the fuel injector and an outlet section operatively associated with the outlet end portion of the fuel injector, wherein adapter means are associated with one of the inlet section of the fuel tube and a reception bore means of the inlet end portion of the fuel injector for retaining at least one sealing member; and e) an annular seal retention channel formed in the adapter means between two axially spaced apart annular flanges, each annular flange having a first annular flange portion adjacent the annular seal retention channel and a second annular flange portion axially spaced from the first annular flange portion through an annular groove; wherein an annular groove is defined between the first and second annular flange portions of each annular flange. 2. A fuel injector as recited in claim 1, wherein the adapter means is formed with an outer surface of the inlet section of the fuel tube. 3. A fuel injector as recited in claim 1, wherein the adapter means is formed with an inner surface of the reception bore means of the inlet end portion of the fuel injector. 4. A fuel injector as recited in claim 1, wherein an annular sealing member is retained in an annular seal retention channel formed in the adapter means. 5. A fuel injector as recited in claim 1, wherein the first annular flange portion of each annular flange has a reduced diameter with respect to the second annular flange portion of each annular flange. 6. A fuel injector as recited in claim 4, wherein an annular rib is associated with a lower end portion of the adapter means. 7. A fuel injector as recited in claim 6, wherein a dimensional ratio between the axial length extending from a mid-line of the annular sealing member to a mid-line of the annular rib and an inner diameter of the reception bore means is not less than about 1.5. 8. A fuel injector as recited in claim 6, wherein a dimensional ratio between the axial length extending from a mid-line of the annular sealing member to a mid-line of the annular rib and an outer diameter of the inlet section of the fuel tube is not less than about 1.5. 9. A fuel injector as recited in claim 1, wherein the injector body includes a mounting flange for mounting the fuel injector to the gas turbine engine. 10. A fuel injector as recited in claim 1, wherein the inlet fitting is removably connected to the injector body. 11. A fuel injector as recited in claim 1, wherein the inlet fitting is joined to the injector body. 12. A fuel injector for a gas turbine engine comprising: a) an inlet fitting portion for receiving fuel; b) a nozzle portion for issuing fuel into the gas turbine engine; c) an injector support body extending between the inlet fitting and the nozzle portion and having an interior bore extending therethrough; d) an elongated fuel tube within the interior bore of the injector support body for delivering fuel from the inlet fitting portion to the nozzle portion, the fuel tube having an inlet section dynamically associated with the inlet fitting portion of the fuel injector and an outlet section joined to the nozzle portion of the fuel injector; e) a seal adapter integrally formed with the inlet section of the fuel tube; the seal adapter having an annular seal retention channel for accommodating a seal; f) a heat shield sleeve formed with the inlet fitting portion of the fuel injector and having a reception bore for dynamically accommodating the seal adapter; g) an annular rib protruding radially outward from a lower end portion of the seal adapter and axially spaced from the seal retention channel to form a heat barrier at the lower end portion of the reception bore of the heat shields that protects a seal associated with the seal adaptor from thermal damage; wherein the annular rib does not make contact with the seal accommodated in a seal retention channel. 13. A fuel injector as recited in claim 12, wherein a seal is retained in the annular seal retention channel formed in the seal adapter. 14. A fuel injector as recited in claim 13, wherein the annular seal retention channel is formed between two axially spaced apart annular flanges. 15. A fuel injector as recited in claim 14, wherein each annular flange includes a first annular flange portion adjacent the annular seal retention channel and a second annular flange portion axially spaced from the first annular flange portion. 16. A fuel injector as recited in claim 15, further comprising a groove defined between the first and second annular flange portions of each annular flange. 17. A fuel injector as recited in claim 15, wherein the first annular flange portion of each annular flange has a reduced diameter with respect to the second annular flange portion of each annular flange. 18. A fuel injector as recited in claim 13, wherein the annular rib is rounded. 19. A fuel injector as recited in claim 12, wherein a ratio between the axial length from a mid-line of the seal to a mid-line of the annular rib and an inner diameter of the reception bore is not less than about 1.5. 20. A fuel injector as recited in claim 12, wherein the seal adapter is configured to retain two axially spaced apart seals. 21. A fuel injector for a gas turbine engine comprising: a) an inlet fitting portion for receiving fuel; b) a nozzle portion for issuing fuel into the gas turbine engine; c) an injector support body extending between the inlet fitting and the nozzle portion and having an interior bore extending therethrough; d) an elongated fuel tube within the interior bore of the injector support body for delivering fuel from the inlet fitting portion to the nozzle portion, the fuel tube having an inlet section dynamically associated with the inlet fitting portion of the fuel injector and an outlet section joined to the nozzle portion of the fuel injector; e) a seal adapter joined to the inlet section of the fuel tube, the seal adapter having an annular seal retention channel for accommodating a seal; f) a reception bore formed by the inlet fitting portion of the fuel injector for dynamically accommodating the seal adapter; g) an annular rib protruding radially outward from a lower end portion of the seal adapter and axially spaced from the seal retention channel to form a heat barrier at the lower end portion of the reception bore of the heat shields that protects a seal associated with the seal adaptor from thermal damage; wherein the annular rib does not make contact with the seal accommodated in a seal retention channel. 22. A fuel injector as recited in claim 21, wherein a seal is retained in the annular seal retention channel formed in the seal adapter. 23. A fuel injector as recited in claim 22, wherein the annular seal retention channel is formed between two axially spaced apart annular flanges. 24. A fuel injector as recited in claim 23, wherein each annular flange includes a first annular flange portion adjacent the annular seal retention channel and a second annular flange portion axially spaced from the first annular flange portion. 25. A fuel injector as recited in claim 24, further comprising a groove defined between the first and second annular flange portions of each annular flange. 26. A fuel injector as recited in claim 24, wherein the first annular flange portion of each annular flange has a reduced diameter with respect to the second annular flange portion of each annular flange. 27. A fuel injector as recited in claim 22, wherein the annular rib is rounded. 28. A fuel injector as recited in claim 21, wherein a ratio between the axial length from a mid-line of the seal to a mid-line of the annular rib and an inner diameter of the reception bore is not less than about 1.5. 29. A fuel injector as recited in claim 21, wherein the inlet fitting portion has a fuel inlet fitting that is removably connected to the inlet fitting portion. 30. A fuel injector as recited in claim 29, wherein the fuel inlet fitting is connected to the inlet fitting portion by a threaded nut. 31. A fuel injector as recited in claim 21, wherein the fuel injector is a dual fuel injector, which includes a first fuel inlet fitting for receiving a first type of fuel and a second fuel inlet fitting for receiving a second type of fuel. 32. A fuel injector as recited in claim 31, wherein the first fuel inlet fitting is in fluid communication with the fuel tube and the second fuel inlet fitting is in fluid communication with the interior bore of the injector support body.
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이 특허에 인용된 특허 (7)
Wilcox Richard L. (Adel IA) Conrad Sherman E. (Des Moines IA), By-pass nozzles.
Bradley Jerome R. (Sterling Heights MI) Halvorsen Robert M. (Birmingham MI) Long Gregory F. (Canton MI), Fuel nozzle assembly with integral valve assembly and inlet wash filter and primary fuel take-off.
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