Fluid flow machine (turbomachine) with increased rotor-stator ratio
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IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F01D-005/06
F01D-005/02
출원번호
US-0621396
(2003-07-18)
우선권정보
DE-102 33 033(2002-07-20)
발명자
/ 주소
Guemmer,Volker
출원인 / 주소
Rolls Royce Deutschland Ltd &
Co KG
대리인 / 주소
Harbin King &
인용정보
피인용 횟수 :
4인용 특허 :
3
초록▼
A fluid-flow machine (turbomachine) includes at least one rotor equipped with blades and at least one stator equipped with vanes, the rotor being supported in a casing by means of a rotating shaft. A form of annulus is provided whose cross-sectional area in a stage consisting of at least one rotor a
A fluid-flow machine (turbomachine) includes at least one rotor equipped with blades and at least one stator equipped with vanes, the rotor being supported in a casing by means of a rotating shaft. A form of annulus is provided whose cross-sectional area in a stage consisting of at least one rotor and one stator results in a rotor-stator contraction ratio QRS which satisfies the equation: description="In-line Formulae" end="lead"[0.2+( KT-0.45)0.1]<QRS<3.0,description="In-line Formulae" end="tail" where KT is the total-stage contraction.
대표청구항▼
What is claimed is: 1. A fluid-flow machine comprising: at least one rotor equipped with blades; at least one stator equipped with vanes; the rotor being supported in a casing by a rotating shaft; wherein, a form of annulus is provided whose cross-sectional area in a stage consisting of at least on
What is claimed is: 1. A fluid-flow machine comprising: at least one rotor equipped with blades; at least one stator equipped with vanes; the rotor being supported in a casing by a rotating shaft; wherein, a form of annulus is provided whose cross-sectional area in a stage consisting of at least one rotor and one stator results in a rotor-stator contraction ratio QRS which satisfies the equation: description="In-line Formulae" end="lead"[0.2+(KT-0.45)0.1]<QRS<3.0,description="In-line Formulae" end="tail" where QRS is defined by the formula description="In-line Formulae" end="lead" QRS=KR/KS,description="In-line Formulae" end="tail" where KT is a total-stage contraction; QRS and KT being calculated as follows: description="In-line Formulae" end="lead" QRS=KR/KS with KR=ARI/ARAdescription="In-line Formulae" end="tail" description="In-line Formulae" end="lead"and KS=ASI/ASAdescription="In-line Formulae" end="tail" description="In-line Formulae" end="lead"and KT=ARI/ASAdescription="In-line Formulae" end="tail" where ARI, ARA, ASI and ASA are calculated as follows: description="In-line Formulae" end="lead"ARI =π(R22-R12)description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"ARA =π(R42-R32)description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"ASI =π(R62-R52)description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"ASA =π(R82-R72)description="In-line Formulae" end="tail" where, in a direction of flow of the fluid-flow machine: R1 is a radius at a base point of a rotor blade leading edge on the rotor shaft, R2 is a radius at a radial outer point of the rotor blade leading edge, R3 is a radius at a base point of a rotor blade trailing edge on the rotor shaft, R4 is a radius at a radial outer point of the rotor blade trailing edge, R5 is a radius at a radial inner point of a stator vane leading edge, R6 is a radius at a radial outer point of the stator vane leading edge, R7 is a radius at a radial inner point of a stator vane trailing edge, and R8 is a radius at a radial outer point of the stator vane trailing edge. 2. A fluid-flow machine in accordance with claim 1, wherein the value of QRS is obtained by shaping a contour of at least one of a hub and the rotor shaft, respectively. 3. A fluid-flow machine in accordance with claim 2, and further comprising the casing, wherein the value of QRS is also at least partially obtained by shaping a contour of the casing. 4. A fluid-flow machine in accordance with claim 3, having a single stage comprising a rotor and a stator. 5. A fluid-flow machine in accordance with claim 3, having multiple stages, each comprising a rotor and a stator. 6. A fluid-flow machine in accordance with claim 1, and further comprising the casing, wherein the value of QRS is at least partially obtained by shaping a contour of the casing. 7. A fluid-flow machine in accordance with claim 1, having a single stage comprising a rotor and a stator. 8. A fluid-flow machine in accordance with claim 1, having multiple stages, each comprising a rotor and a stator. 9. A fluid-flow machine in accordance with claim 1, wherein a second form of annulus is provided whose cross-sectional areas result in axial-gap contractions KX1 and KX2 which satisfy the following equations: description="In-line Formulae" end="lead"0.8< KX1<1.0description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"0.8< KX2<1.0,description="In-line Formulae" end="tail" where KX1 and KX2 satisfy the following equations: description="In-line Formulae" end="lead"KX 1=ARA/ASIdescription="In-line Formulae" end="tail" description="In-line Formulae" end="lead"KX 2=ASA/ARI2,description="In-line Formulae" end="tail" where ARI2 is calculated as follows: description="In-line Formulae" end="lead"ARI 2=π(R102-R92) description="In-line Formulae" end="tail" where, in the direction of flow of the fluid-flow machine: R9 is a radius at a radial inner point of a leading edge of a downstream next rotor blade, and R10 is a radius at a radial outer point of the leading edge of the downstream next rotor blade. 10. A fluid-flow machine in accordance with claim 9, wherein the values of at least one of QRS, KX1 and KX2, respectively, are obtained by shaping a contour of at least one of a hub and the rotor shaft, respectively. 11. A fluid-flow machine in accordance with claim 10, and further comprising the casing, wherein the values of at least one of QRS, KX1 and KX2, respectively, are also at least partially obtained by shaping a contour of the casing. 12. A fluid-flow machine in accordance with claim 11, having a single stage comprising a rotor and a stator. 13. A fluid-flow machine in accordance with claim 11, having multiple stages, each comprising a rotor and a stator. 14. A fluid-flow machine in accordance with claim 9, and further comprising the casing, wherein the values of at least one of QRS, KX1 and KX2, respectively, are at least partially obtained by shaping a contour of the casing. 15. A fluid-flow machine in accordance with claim 9, having a single stage comprising a rotor and a stator. 16. A fluid-flow machine in accordance with claim 9, having multiple stages, each comprising a rotor and a stator. 17. A fluid-flow machine comprising: at least one rotor equipped with blades; at least one stator equipped with vanes, the rotor being supported in a casing by a rotating shaft; wherein a form of annulus is provided whose cross-sectional areas result in axial-gap contractions KX1 and KX2 which satisfy the following equations: description="In-line Formulae" end="lead"0.8< KX1<1.0description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"0.8< KX2<1.0,description="In-line Formulae" end="tail" where KX1 and KX2 satisfy the following equations: description="In-line Formulae" end="lead"KX 1=ARA/ASIdescription="In-line Formulae" end="tail" description="In-line Formulae" end="lead"KX 2=ASA/ARI2,description="In-line Formulae" end="tail" where ARA, ASI, ASA and ARI2 are calculated as follows: description="In-line Formulae" end="lead"ARA =π(R42-R32)description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"ASI =π(R62-R52)description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"ASA =π(R82-R72)description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"ARI 2=π(R102-R92), description="In-line Formulae" end="tail" where, in a direction of flow of the fluid-flow machine: R3 is a radius at a base point of a rotor blade trailing edge on the rotor shaft, R4 is a radius at a radial outer point of the rotor blade trailing edge, R5 is a radius at a radial inner point of a stator vane leading edge, R6 is a radius at a radial outer point of the stator vane leading edge, R7 is a radius at a radial inner point of a stator vane trailing edge, R8 is a radius at a radial outer point of the stator vane trailing edge, R9 is a radius at a radial inner point of a leading edge of a downstream next rotor blade, and R10 is a radius at a radial outer point of the leading edge of the downstream next rotor blade. 18. A fluid-flow machine in accordance with claim 17, wherein the values of at least one of KX1 and KX2, respectively, are obtained by shaping a contour of at least one of a hub and the rotor shaft, respectively. 19. A fluid-flow machine in accordance with claim 18, and further comprising the casing, wherein the values of at least one of KX 1 and KX2, respectively, are also at least partially obtained by shaping a contour of the casing. 20. A fluid-flow machine in accordance with claim 19, having a single stage comprising a rotor and a stator. 21. A fluid-flow machine in accordance with claim 19, having multiple stages, each comprising a rotor and a stator. 22. A fluid-flow machine in accordance with claim 17, and further comprising the casing, wherein the values of at least one of KX 1 and KX2, respectively, are at least partially obtained by shaping a contour of the casing. 23. A fluid-flow machine in accordance with claim 17, having a single stage comprising a rotor and a stator. 24. A fluid-flow machine in accordance with claim 17, having multiple stages, each comprising a rotor and a stator.
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이 특허에 인용된 특허 (3)
Walsh Thomas C. (New Britain CT), Compression section for an axial flow rotary machine.
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