Axial compressor and gas turbine having axial compressor
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F01D-025/32
F04D-029/58
F04D-029/70
F02C-009/18
F02C-003/30
F02C-007/143
출원번호
US-0905315
(2013-05-30)
등록번호
US-9644642
(2017-05-09)
우선권정보
JP-2012-126495 (2012-06-01)
발명자
/ 주소
Takahashi, Yasuo
Myoren, Chihiro
Kawamura, Kohta
출원인 / 주소
Mitsubishi Hitachi Power Systems, Ltd.
대리인 / 주소
Crowell & Moring LLP
인용정보
피인용 횟수 :
0인용 특허 :
5
초록▼
An axial compressor that can remove an attachment within a groove of a casing and recover an effect of suppressing stall on rotor blades, and a gas turbine provided with the axial compressor, are provided. The axial compressor includes a compressor body 6 and a sprayer 9 for spraying droplets in suc
An axial compressor that can remove an attachment within a groove of a casing and recover an effect of suppressing stall on rotor blades, and a gas turbine provided with the axial compressor, are provided. The axial compressor includes a compressor body 6 and a sprayer 9 for spraying droplets in suction gas of the compressor body 6 so that the droplets are introduced into the compressor body 6 and evaporate. The compressor body 6 includes a casing 11, a rotor 12, rotor blades 13, and stator vanes 14. A groove 21 is formed in an inner circumferential surface of the casing 11 so as to be positioned around rotor blades 13 arranged on a front stage side. A purge system 23 is provided that supplies high-pressure air to the groove 21 through communication holes 22.
대표청구항▼
1. An axial compressor comprising: a compressor body that compresses gas; anda sprayer that is structurally configured to spray a droplet in suction gas of the compressor body so that the droplet is introduced into the compressor body and evaporates, the compressor body including a casing,a rotor ro
1. An axial compressor comprising: a compressor body that compresses gas; anda sprayer that is structurally configured to spray a droplet in suction gas of the compressor body so that the droplet is introduced into the compressor body and evaporates, the compressor body including a casing,a rotor rotatably arranged in the casing,a plurality of rotor blades arranged on an outer circumferential side of the rotor,a plurality of stator vanes arranged on an inner circumferential side of the casing, anda groove arranged in an inner circumferential surface of the casing so as to be positioned around rotor blades arranged on a front stage side, wherein a communication hole that communicates with the groove is formed in the casing,a purge system for supplying high-pressure gas to the groove through the communication hole is provided so as to remove a liquid membrane within the groove, andthe communication hole extends to the groove and is inclined toward a downstream side with respect to an axial direction of the compressor body. 2. The axial compressor according to claim 1, wherein the communication hole extends to the groove and is inclined in a rotational direction of the rotor blades. 3. The axial compressor according to claim 1, wherein the purge system supplies high-pressure gas extracted by an extractor of the compressor body to the groove through the communication hole. 4. The axial compressor according to claim 1, wherein the purge system supplies high-pressure gas generated by a purge compressor to the groove through the communication hole. 5. The axial compressor according to claim 1, wherein the sprayer sprays a droplet of water in the suction gas of the compressor body. 6. A gas turbine comprising: the axial compressor according to claim 1;a combustor that mixes a fuel with compressed gas generated by the axial compressor and burns the fuel and the compressed gas; anda turbine that is rotationally driven by combustion gas generated by the combustor. 7. The gas turbine according to claim 6, further comprising: a humidifier that humidifies a compressed gas generated by the axial compressor; anda recuperator that heats the compressed gas humidified by the humidifier using exhaust gas of the turbine;wherein a combustor mixes the fuel with the compressed gas heated by the recuperator and burns the fuel and the compressed gas. 8. An axial compressor comprising: a compressor body that compresses gas;a sprayer that is structurally configured to spray a droplet in suction gas of the compressor body so that the droplet is introduced into the compressor body and evaporates, the compressor body including a casing,a rotor rotatably arranged in the casing,a plurality of rotor blades arranged on an outer circumferential side of the rotor,a plurality of stator vanes arranged on an inner circumferential side of the casing, anda groove arranged in an inner circumferential surface of the casing so as to be positioned around rotor blades arranged on a front stage side, wherein a communication hole that communicates with the groove is formed in the casing,a purge system for supplying high-pressure gas to the groove through the communication hole is provided so as to remove a liquid membrane within the groove,a suction system that is structurally configured to suction the liquid membrane within the groove through the communication hole; anda control device that selectively executes purge control in which the high pressure gas is supplied from the purge system to the groove and suction control in which the liquid membrane within the groove is suctioned by the suction system. 9. The axial compressor according to claim 8, wherein the control device executes the purge control while a droplet is not sprayed in the suction gas of the compressor body, and executes the suction control while a droplet is sprayed in the suction gas of the compressor body. 10. The axial compressor according to claim 8, wherein the groove has a downstream-side side surface that is inclined toward a downstream side in a depth direction of the groove. 11. The axial compressor according to claim 8, wherein the suction system suctions the liquid membrane within the groove through the communication hole by suction force generated by a vacuum pump. 12. A gas turbine comprising: the axial compressor according to claim 8,a combustor that mixes a fuel with compressed gas generated by the axial compressor and burns the fuel and the compressed gas; anda turbine that is rotationally driven by combustion gas generated by the combustor. 13. An axial compressor comprising: a compressor body that compresses gas;a sprayer that is structurally configured to spray a droplet in suction gas of the compressor body so that the droplet is introduced into the compressor body and evaporates, the compressor body including a casing,a rotor rotatably arranged in the casing,a plurality of rotor blades arranged on an outer circumferential side of the rotor,a plurality of stator vanes arranged on an inner circumferential side of the casing, anda groove arranged in an inner circumferential surface of the casing so as to be positioned around rotor blades arranged on a front stage side, wherein a communication hole that communicates with the groove is formed in the casing, anda purge system for supplying high-pressure gas to the groove through the communication hole is provided so as to remove a liquid membrane within the groove;a suction system that is structurally configured to suction the liquid membrane within the groove through the communication hole; anda control device that selectively executes purge control in which the high pressure gas is supplied from the purge system to the groove and suction control in which the liquid membrane within the groove is suctioned by the suction system, wherein the control device executes the purge control while a droplet is not sprayed in the suction gas of the compressor body, and executes the suction control while a droplet is sprayed in the suction gas of the compressor body.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (5)
Johnston Richard P. (Morrow OH) Knapp Malcolm H. (South Lynnfield MA) Coulson Charles E. (Danvers MA), Active clearance control system for a turbomachine.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.