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41. 发明专利

JPS601471A SEALING DEVICE BETWEEN THERMALLY-EXTENSIBLE SEGMENTS 失效
公开(公告)号：JPS601471A
公开(公告)日：1985-01-07
申请号：JP10796283
申请日：1983-06-17
申请人： HITACHI LTD
发明人： KAWAIKE KAZUHIKO , MATSUMOTO MANABU , IKEGUCHI TAKASHI , NODA MASAMI
IPC分类号： F01D11/00 , F16J15/06 , F02C7/28
摘要： PURPOSE:To prevent the lowering of sealing capacity caused by thermal change in sealing of nozzle segments in a gas turbine by shaping two rails longitudinally in parallel on one side of a seal plate for making in touch with the end faces of segments elastically. CONSTITUTION:Two rails 6b and 6c are provided to be longitudinally in parallel on one side of a seal plate 6. In this construction, since gap flow passages between a seal plate main body 6a and grooves are bent due to the contraction of end walls 2' of segments in a cold state, a leak resistance is large to obtain a sealing effect for the time being. Meanwhile, in a hot state, the interval between segments are contracted, and their end faces 3' are brought in touch with rails 6b and 6c. Since rails 6b and 6c are circumferentially pushed to be elastically deformed, segments are free from a large thermal stress.

42. 发明专利

JPS5857565A CLEARANCE SEAL FOR ROTARY MACHINE 失效
公开(公告)号：JPS5857565A
公开(公告)日：1983-04-05
申请号：JP15368081
申请日：1981-09-30
申请人： HITACHI LTD
发明人： SHIZUTANI MITSUTAKA , KOBAYASHI SHIGEYOSHI , MATSUMOTO MANABU , AKATSU SHIGEYUKI
IPC分类号： F16J15/447 , F16J15/44
摘要： PURPOSE:To obtain favourable sealing effect between a rotary body and a stationary body without having any restriction in assembling, by providing a large number of seal fin rows of the rotary body on an annular block which is movable through centrifugal force. CONSTITUTION:Seal fins 10 of a rotary body side are provided on an annular and movable block 10 provided on the side 3' of a rotary body and ordinary seal fins 7 are provided on the side 6' of a stationary body. Appropriate gaps on the tips of the seal fins 16 and 7 of the respective rotary body and stationary body are kept so that there is no hindrance in assembling as the movable block 10 is in a withdrawn state toward the rotary body side at the time A of nonrotating. On the one hand, sufficient sealing effect is obtainable, as the movable block 10 is moved obliquely outward through action of centrifugal force and the seal fins 10' and 7 approach and pile up each other. A return spring 11 may well by added so that the movable block 10 is returned reliably at the time of nonrotating.

43. 发明专利

JPS5848702A AIR COOLED VANE IN GAS TURBINE 失效
公开(公告)号：JPS5848702A
公开(公告)日：1983-03-22
申请号：JP14617081
申请日：1981-09-18
申请人： HITACHI LTD
发明人： KOBAYASHI SHIGEYOSHI , MATSUMOTO MANABU , AKATSU SHIGEYUKI , SHIZUTANI MITSUTAKA , KURODA MICHIO
IPC分类号： F01D5/18
摘要： PURPOSE:To obtain cooling function in a wide range and improve the efficiency of a gas turbine by providing the flow paths of coolant extending from the vane root to the vane tip end within a vane at the vane backside and drum side and communicating each other by respective impingement cooling holes. CONSTITUTION:Cavity parts 25, 30, 35 and 40 are provided in a vane 10 manufactured by precision casting. Cooling air is introduced from the vane root of the cavity 30 at the vane drum side, and injected through an impingement cooling hole 50, while flowing to the vane tip end, entering into the cavity 35 at the back side, and coming into colision with the vane wall to carry out cooling. Cooling air entering into the cavity 35 is ejected from the impingement cooling hole 55 to the cavity 40, and discharged into a main stream gas via a pin and a fin cooling flow-path 45 at the rear edge part. Since the impingement cooling can be used in this manner, cooling function in a wide range can be obtained.

44. 发明专利

JPS589695B2 失效
公开(公告)号：JPS589695B2
公开(公告)日：1983-02-22
申请号：JP1229176
申请日：1976-02-09
申请人： HITACHI LTD
发明人： TANAKA SHIGERU , MATSUMOTO MANABU , TAKAGI JUSUKE
IPC分类号： B01D59/20 , B04B5/08

45. 发明专利

JPS5672222A MOVING BLADE OF GAS TURBINE 失效
公开(公告)号：JPS5672222A
公开(公告)日：1981-06-16
申请号：JP14646779
申请日：1979-11-14
申请人： HITACHI LTD
发明人： MATSUMOTO MANABU , KOBAYASHI SHIGEYOSHI , AKATSU SHIGEYUKI , SHIZUTANI MITSUTAKA
IPC分类号： F01D5/18 , F02C7/12 , F02C7/18
摘要： PURPOSE:To easily control a flow rate of cooling air by a method wherein a header for the cooling air is formed on a moving blade shank at the parts adjacent to each other and the cooling air is appropriately distributed from the header to the essential parts. CONSTITUTION:The header 50 is formed between adjacent shanks 60 of the moving blade 80. The header 50 is a distribution chamber of the cooling air and a cooling air passage 55 within a backet 16 is formed by providing a hollow 51 as deap as it can be opened in the header 50. On the sides of the shanks 60, there are opened a plurality of small holes 62 or slits 63 for the cooling air being blown out from the header to the outside the blade.

46. 发明专利

JPS5652504A IMPINGEMENT COOLER 失效
公开(公告)号：JPS5652504A
公开(公告)日：1981-05-11
申请号：JP12680179
申请日：1979-10-03
申请人： HITACHI LTD
发明人： SHIZUTANI MITSUTAKA , KOBAYASHI SHIGEYOSHI , MATSUMOTO MANABU , AKATSU SHIGEYUKI
IPC分类号： F01D9/02 , F01D5/18
摘要： PURPOSE:To improve a cooling efficiency of a device wherein its surface to be cooled is so done by ejecting a cooling fluid from many injection holes of a plate spaced from the cooled surface, by forming projections around the injection nozzles of the plate. CONSTITUTION:In case this invention is applied for cooling a gas turbine blade, to cool a turbine wheel's external shell 1 whose external surface is exposed with a high temperature gas, an insert 3 or a plate spaced from an internal peripheral surface 2 of the blade, that is the surface to be cooled, is disposed in a hollow space inside the blade. The insert 3 has many injection holes 4 each from which a cooling fluid is ejected against the internal peripheral surface 2. A projection 5 lower than an interval (h) between the internal peripheral surface 2 is mounted on the external face of the insert 3, with its bored injection opening 6 agreeing with each injection hole 4. As a cooling fluid runs currently at a higher speed, the cooling efficiency can be improved.

47. 发明专利

JPS55109704A GASSTURBINE BLADE CAPABLE OF BEING COOLED 失效
公开(公告)号：JPS55109704A
公开(公告)日：1980-08-23
申请号：JP1733079
申请日：1979-02-19
申请人： HITACHI LTD
发明人： SAKAMOTO TAKESHI , KOBAYASHI SHIGEYOSHI , ANZAI SHIYUNICHI , MATSUMOTO MANABU , AKATSU SHIGEYUKI
IPC分类号： F01D5/18
摘要： PURPOSE:To cool the entire surface of gas-turbine blade uniformly, by increasing the coefficient of heat transfer of coolant and improving blade cooling effect of the coolant by charging filler material in coolant passage, and thereby attaining uniform distribution of coolant temperature and heat transmitting efficiency in the coolant passage. CONSTITUTION:Coolant introduced from coolant supply port 4 flows into coolant passage 2', and passing through the small spaces formed between particles of filler material, is discharged to the outside from coolant outlet ports 5, 6. When filler material 7 is charged into passage 2', coolant flow is disturbed considerably and its velocity becomes high, so that heat transmitting efficiency of the coolant becomes high and resultantly its cooling effect is enhanced. Further, since coolant is mixed or agitated efficiently, coolant passage 2' can be cooled uniformly throughout the entire surface thereof, so that the entire surface of blade 1' can be cooled uniformly.

48. 发明专利

JPS55104506A GASSTURBINE BLADE 失效
公开(公告)号：JPS55104506A
公开(公告)日：1980-08-11
申请号：JP1042179
申请日：1979-02-02
申请人： HITACHI LTD
发明人： ANZAI SHIYUNICHI , SAKAMOTO TAKESHI , KOBAYASHI SHIGEYOSHI , MATSUMOTO MANABU , AKATSU SHIGEYUKI
IPC分类号： F01D5/18
摘要： PURPOSE:To cool gas-turbine blades efficiently and uniformly, by ejecting cooling water onto the surface of outer plating from an inserted body having a hollow inside chamber and disposed on the inside of said outer plating with some clearance, and issuing mixture of cooling air and steam thus produced to the outside of blade through apertures formed in the outer plating. CONSTITUTION:Gas-turbine stator blade 10 is consisted of outer plating 11, insered body inside 12, chamber 14, clearance 15 formed between outer plating 11 and inserted body 12, etc. The inserted body 12 is formed with a plurality of apertures 16 for ejecting coolant, for instance, to the portion of outer plating 11 located at the leading edge of turbine blade where the amount of heat transmitted to the stator blade 10 is fairly large, that is, coefficient of heat transfer on the gas-side blade surface is high, and also a plurality of apertures 17A, 17B for ejecting coolant onto the protion of outer plating 11 located at the throat of blade on the convex side thereof. On the other hand, the outer plating 11 is formed at the leading edge protion of blade with a plurality of apertures 18 for ejecting coolant from clearance 15 to the outside of blade 10 and forming a film of coolant over the blade surface. Further, apertures 19 and 20 are formed respectively at the throat portion on the convex side of blade and at the trailing edge portion of the same.

49. 发明专利

JPS5532915A GAS TURBINE MOVING VANE 失效
公开(公告)号：JPS5532915A
公开(公告)日：1980-03-07
申请号：JP10290978
申请日：1978-08-25
申请人： HITACHI LTD
发明人： MATSUMOTO MANABU , SAKAMOTO TAKESHI , ANZAI SHIYUNICHI , KOBAYASHI SHIGEYOSHI
IPC分类号： F01D5/14 , F01D5/18
摘要： PURPOSE:To effectively cool the whole vane while decreasing thermal stress, by forming a portion, which must be cooled, of this turbine moving vane by an aggregate manufactured by bundling thin tubes while opening cooling passages to a web portion and the back of the vane. CONSTITUTION:A vane portion except a dovetail 3 of this moving vane 2 is molded by means of an aggregate produced by bundling thin tubes 7 molded by heat-proof materials, and is root portion is fixed to a platform 8. Each thin tube 7 is opened 11 to a header 9 mounted to the inside of the dovetail. Meanwhile, the other ends of each thin tube 7 are opened 12 to the surfaces of the vane of a web portion, the back, etc. by working a flank and a nose portion of the aggregate in vane-like shapes after welding each thin tube 7 because the B-B sectional area of the vane contracts toward the direction that its radius becomes larger. Thus, air introduced into the dovetail 3 through a disc 1 is distributed to a passage 13 by means of the header 9, uniformly cools the vane while flowing out from openings 12, and forms air films.

50. 发明专利

JPS5517615A COOLING CONSTRUCTION FOR MOVING VANE OF GAS TURBINE 失效
公开(公告)号：JPS5517615A
公开(公告)日：1980-02-07
申请号：JP8847178
申请日：1978-07-21
申请人： HITACHI LTD
发明人： KOBAYASHI SHIGEYOSHI , SAKAMOTO TAKESHI , ANZAI SHIYUNICHI , MATSUMOTO MANABU
IPC分类号： F01D5/18
摘要： PURPOSE:To raise the cooling effect and make the temperature distribution uniform, by manufacturing a moving vane of a structural core, an outside metal plate and a high-thermal-conductivity metal layer which has recesses for making cooling fluid passages between the core and the metal plate. CONSTITUTION:The moving vane for gas turbine comprises the structural core 35, the thermal high-thermal-conductivity metal layer 45 provided on the outside surface of the core, and the outside metal plate 40 provided on the outside surface of the metal layer. The metal layer has the recesses 46 extending in the radial direction and located on the front and rear sides of the moving vane. The recesses on the rear side of the moving vane are closed with the metal plate 40, thereby defining cooling fluid passages 25. The recesses on the front side of the moving vane are closed with the structural core 35, thereby defining cooling fluid passages 25. A coolant is introduced into the passages 25. Minute liquid drops of the coolant collide against the walls of the passages 25 due to the revolution of the turbine so that a liquid film 60 is made on each wall. The purpose is thus attained.

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