A multiple-passage turbine nozzle with desired predetermined flow properties may be provided with an adjustment member in one or more of its passages to limit the flow therethrough. Turbine nozzle flow is an important performance characteristic that may be difficult to control by conventional drilli
A multiple-passage turbine nozzle with desired predetermined flow properties may be provided with an adjustment member in one or more of its passages to limit the flow therethrough. Turbine nozzle flow is an important performance characteristic that may be difficult to control by conventional drilling or machining manufacturing methods. The adjustment member may protrude into a nozzle passage, thereby reducing airflow through the nozzle passage. The amount of protrusion is variable and is selected to provide a desired partial or total occlusion of an associated passage at the time of manufacture of the turbine nozzle to compensate for variations produced by the conventional manufacturing techniques. The turbine nozzle according to the present invention provides simple and convenient calibrated adjustment of the predetermined flow that may be allowed to pass through a turbine nozzle onto a turbine wheel of a turbo machine.
대표청구항▼
I claim: 1. A turbine nozzle for a turbo machine comprising: a plurality of nozzle passages; each of the nozzle passages being adapted to retain a fixed cross-sectional area when incorporated in the turbo machine; and at least one flow adjustment member adapted for controllable protrusion in at lea
I claim: 1. A turbine nozzle for a turbo machine comprising: a plurality of nozzle passages; each of the nozzle passages being adapted to retain a fixed cross-sectional area when incorporated in the turbo machine; and at least one flow adjustment member adapted for controllable protrusion in at least one of the plurality of nozzle passages, the flow adjustment member capable of providing a reduced cross-sectional area of the at least one of the plurality of nozzle passages, which reduced cross-sectional area remains fixed during operation of the turbo machine; and wherein the nozzle passages are drilled in the turbine nozzle to provide a drilled adjustable flow turbine nozzle. 2. The turbine nozzle according to claim 1, further comprising at least two flow adjustment members, each flow adjustment member disposed within a separate one of said plurality of nozzle passages. 3. The turbine nozzle according to claim 2, wherein the at least two flow adjustment members are equally spaced about the turbine nozzle. 4. The turbine nozzle according to claim 1, further comprising male threads on the at least one flow adjustment member, the male threads mating with female threads of the turbine nozzle to allow rotational adjustment of the at least one flow adjustment member in the nozzle passages. 5. The turbine nozzle according to claim 1, wherein the at least one flow adjustment members frictionally engages a hole to allow adjustment of the at least one flow adjustment member in the nozzle passages. 6. The turbine nozzle according to claim 1, wherein the plurality of nozzle passages are about 50 nozzle passages and the number of the nozzles passages into which one of the adjustment members protrudes is about 4. 7. The turbine nozzle according to claim 1, further comprising a hole cross-drilled into the turbine nozzle, the hole communicating an exterior of the turbine nozzle with one of the plurality of nozzle passages, the hole capable of receiving one of the at least one flow adjustment members. 8. The turbine nozzle according to claim 7, wherein the hole forms an angle with the nozzle passage to which it communicates of less than 90 degrees. 9. The turbine nozzle according to claim 8, wherein the hole forms an angle with the nozzle passage to which it communicates of less than 70 degrees. 10. The turbine nozzle according to claim 1, wherein the at least one flow adjustment member is made of a material having the same hardness as a material composing the turbine nozzle. 11. A turbine nozzle for introducing a predetermined airflow to a turbine wheel of a turbo machine, the turbine nozzle comprising: a plurality of nozzle passages circumferentially disposed around the nozzle, said nozzle passages having a predetermined composite cross-sectional area; flow adjustment members adapted for controllable protrusion in each of at least two of the nozzle passages, the flow adjustment members capable of providing a reduction of cross-sectional area of the at least two of the plurality of nozzle passages which cross-sectional area remains fixed during the introduction of the predetermined airflow; and wherein the at least two of the plurality of nozzle passages are equally spaced circumferentially about the adjustable flow turbine nozzle; wherein at least two holes are cross-drilled into the adjustable flow turbine nozzle, each of the holes communicating an exterior of the adjustable flow turbine nozzle with one of the plurality of nozzle passages, the holes each capable of receiving one of the flow adjustment members; and wherein each of the holes forms an angle with the nozzle passage to which it communicates of less than 90 degrees. 12. The adjustable flow turbine nozzle according to claim 11 further comprising male threads on the at least two flow adjustment members, the male threads mating with female threads of the adjustable flow turbine nozzle to allow rotational adjustment of the at least two flow adjustment members in the at least two of the plurality of nozzle passages. 13. The adjustable flow turbine nozzle according to claim 11, wherein the at least two flow adjustment members frictionally engage the adjustable flow turbine nozzle to allow frictional adjustment of the at least two flow adjustment members in the at least two of the plurality of nozzle passages. 14. The adjustable flow turbine nozzle according to claim 11, wherein the at least one flow adjustment member is made of a material having the same hardness as the material composing the turbine nozzle. 15. A drilled adjustable flow turbine nozzle comprising: about 50 nozzle passages; a flow adjustment member adapted for controllable protrusion in at least one but not more than about 4 of the nozzle passages, the flow adjustment member capable of providing an adjustable airflow through the drilled adjustable flow turbine nozzle; and a cross-drilled hole in the drilled adjustable flow turbine nozzle, the hole communicating an exterior of the drilled adjustable flow turbine nozzle with one of the nozzle passages, the hole capable of receiving the flow adjustment member, wherein the hole forms an angle with the nozzle passage to which it communicates of less than 90 degrees. 16. The drilled adjustable flow turbine nozzle according to claim 15, further comprising at least two flow adjustment members equally spaced circumferentially about the turbine nozzle. 17. The drilled adjustable flow turbine nozzle according to claim 15, further comprising: male threads on the at least one flow adjustment member; and female threads on the hole, the male threads mating with the female threads to allow rotational adjustment of the at least one flow adjustment member in the nozzle passages. 18. The drilled adjustable flow turbine nozzle according to claim 15, wherein the at least one flow adjustment member frictionally fits in the hole and protrudes from the hole into the nozzle passage to allow adjustment of the at least one flow adjustment member in the nozzle passages. 19. A vaned adjustable flow turbine nozzle comprising: about 50 nozzle passages formed as vanes on a surface of the vaned adjustable flow turbine nozzle; and at least one flow adjustment member adapted for controllable protrusion in at least one but not more than about 4 of the vanes, each flow adjustment member capable of providing an adjustable airflow through the vaned adjustable flow turbine nozzle. 20. The vaned adjustable flow turbine nozzle according to claim 19, further comprising at least two flow adjustment members in the vanes, each flow adjustment member equally spaced about the vaned adjustable flow turbine nozzle.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (9)
Corrigan Charles E. (Tempe AZ) Dodge Paul R. (Mesa AZ), Combustion turbine engine.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.