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1. 发明专利

JPS62180173A SHAFT SEALING DEVICE 失效
公开(公告)号：JPS62180173A
公开(公告)日：1987-08-07
申请号：JP2014186
申请日：1986-02-03
申请人： KANSAI ELECTRIC POWER CO , HITACHI LTD
发明人： SUGIMOTO OSAMU , HOTTA TEIJI , ARAI KATSUTOSHI , AIZAWA KOJI , KAWAIKE KAZUHIKO , HITOMI ICHIRO , INOUE HISAO
IPC分类号： F16J15/34 , F16J15/30
摘要： PURPOSE:To obtain a shaft sealing device requiring easy assembly and removal and giving good sealing performance by so fitting a case for housing a seal ring to a seal case as to be freely detachable. CONSTITUTION:A seal case 10 is placed between a seal casing 9 and a rotary shaft 1 and fitted with cases 17A and 17B for housing a seal ring 12 in slide contact with the flange 13 of the rotary shaft 1. And the cases 17A and 17B are bolt 18 fixed to the seal case 10 to permit the detaching thereof. When a shaft sealing device is assembled, therefore, it is possible to mount the cases 17A and 17B first on the seal case 10 and then fix a whole to the seal casing 9, thereby simplifying assembly work very much. Also, the machining of the slide surface of the seal ring 12 may be carried out after the mounting thereof to the cases 17A and 17B, thereby enabling the improvement of assembly precision and sealing quality.

2. 发明专利

JPS6480773A SHAFT SEAL DEVICE 失效
公开(公告)号：JPS6480773A
公开(公告)日：1989-03-27
申请号：JP23717087
申请日：1987-09-24
申请人： KANSAI ELECTRIC POWER CO , HITACHI LTD
发明人： SUGIMOTO OSAMU , KISHIDA TAKUYA , AIZAWA KOJI , ARAI KATSUTOSHI , KAWAIKE KAZUHIKO , KIKUCHI KEIZO , KARITA MAKOTO
IPC分类号： F03B11/06 , F04D29/12 , F16J15/34
摘要： PURPOSE:To surely fix a seal ring by pinching the seal ring with divided metal rings via a filler layer formed at least on the inner and outer peripheries of the seal ring. CONSTITUTION:A filler layer 11 is formed at least on the inner and outer peripheries of a seal ring 5a, and the seal ring 5a is pinched by divided metal rings 12, 12a via this filler layer 11 to be fixed to a seal case 6. The seal ring 5a is closely stuck and fixed by the metal rings 12, 12a with no gap via the filler layer 11 covering the irregularity due to the processing accuracy even if the sealing water pressure is applied to the seal ring 5a from the outer periphery side during the operation, and the seal ring 5a is prevented from being inclined by the sealing water pressure.

3. 发明专利

JPS62180174A SHAFT SEALING DEVICE 失效
公开(公告)号：JPS62180174A
公开(公告)日：1987-08-07
申请号：JP2014286
申请日：1986-02-03
申请人： KANSAI ELECTRIC POWER CO , HITACHI LTD
发明人： SUGIMOTO OSAMU , HOTTA TEIJI , AIZAWA KOJI , ARAI KATSUTOSHI , KAWAIKE KAZUHIKO , HITOMI ICHIRO , INOUE HISAO
IPC分类号： F16J15/34
摘要： PURPOSE:To obtain a shaft sealing device of good water sealing performance by forming a seal ring in slide contact with the flange of a rotary shaft from an elastic or a flexible member, and fitting a support member to the inside of the seal ring for supporting the weight of a seal case itself. CONSTITUTION:A seal ring in slide contact with the flange 2 of a rotary shaft 1 is formed from a flexible member 3A and the inside thereof is fitted with a support member 2a for supporting the weight of a seal case 5 itself. According to the aforesaid constitution, the flexible member 3A is made in close contact with the slide surface of the flange 2 and stable water sealing performance becomes available regardless of seal surface precision. Also, the weight of the seal case 5 itself is supported by the support member 2a. Consequently, seal surface pressure can be set to a predetermined value and stable water sealing performance becomes available for a long time.

4. 发明专利

JPS62292972A SHAFT SEAL DEVICE 失效
公开(公告)号：JPS62292972A
公开(公告)日：1987-12-19
申请号：JP13366886
申请日：1986-06-11
申请人： KANSAI ELECTRIC POWER CO , HITACHI LTD
发明人： SUGIMOTO OSAMU , HOTTA TEIJI , AIZAWA KOJI , ARAI KATSUTOSHI , KAWAIKE KAZUHIKO , KIKUCHI KEIZO , INOUE HISAO
IPC分类号： F16J15/34
摘要： PURPOSE:To prevent the breakage of a seal ring by accommodating the seal ring into a ductile member and installing said seal ring onto a seal case. CONSTITUTION:The shaft seal device consists of a seal casing 16 surrounding the outer periphery of a flange 11, seal case 7 which is positioned inside the seal casing 16 and used for accommodating a seal ring 10, and a coil spring 9 for pressing the seal case 7. The seal ring 10 is accommodated into a ductile member 13 (e.g., bronze) and installed onto the seal case 7. Therefore, even if an impact force due to the vibration and variation of hydraulic pressure during operation acts onto the seal ring 10, the breakage of the seal ring 10 is prevented, since the seal ring 10 is protected by the ductile member 13.

5. 发明专利

JPH02154869A SHAFT SEAL DEVICE FOR HYDRAULIC MACHINE 失效
公开(公告)号：JPH02154869A
公开(公告)日：1990-06-14
申请号：JP30625488
申请日：1988-12-03
申请人： HITACHI LTD , KANSAI ELECTRIC POWER CO
发明人： AIZAWA KOJI , ARAI KATSUTOSHI , KAWAIKE KAZUHIKO , KIKUCHI KEIZO , KARITA MAKOTO , SUGIMOTO OSAMU , KISHIDA TAKUYA
IPC分类号： F03B11/00 , F16J15/34
摘要： PURPOSE:To surely lubricate a seal ring and prevent burning even when the water feed quantity is small by feeding water to an inner periphery side gap formed by a rotary shaft and a seal case and a flange. CONSTITUTION:Water feeding means 9a, 9b and 13 feeding water to an inner periphery side gap 10 formed by a rotary shaft 1 and a seal case 5 and a flange 3 are provided on the inner periphery side of a seal ring 4. When water is fed to such a shaft seal device through a water feed pipe 9a, water is filled in the inner periphery side gap 10 on the inner periphery side of the seal ring 4, part of it lubricates the sliding face of the seal ring 4 and then is leaked to the outside of the seal ring 4, but this quantity is slight, thus the inner periph ery side gap 10 is invariably filled with water. Even if the water feed quantity is small, there is no fear of burning due to water exhaustion. Since water is fed to the inner periphery side of the seal ring 4, the centrifugal force is in creased and the lubricating water quantity is increased as the rotation speed is increased. The stable sliding characteristic is obtained with a small water feed quantity, and the burning of the seal ring can be prevented.

6. 发明专利

JPH01261572A MAGNETIC FLUID SEALING DEVICE 失效
公开(公告)号：JPH01261572A
公开(公告)日：1989-10-18
申请号：JP8508488
申请日：1988-04-08
申请人： HITACHI LTD , KANSAI ELECTRIC POWER CO
发明人： HIROYAMA HIROO , FURUKAWA YOSHIO , ARAI KATSUTOSHI , KAWAIKE KAZUHIKO , SUGIMOTO OSAMU , KISHIDA TAKUYA
IPC分类号： F16J15/43 , F16J15/16 , F16J15/40
摘要： PURPOSE:To facilitate the assembling of a magnetic fluid sealing device and to prolong its life by arranging a non-magnetic housing, an upper and a lower magnetic ring and an upper magnetic ring of a permanent magnet concentrically with a rotating belt on the non-magnetic housing. CONSTITUTION:A non-magnetic housing 6 divided into segments, an upper and a lower magnetic ring 3, 4 and the upper magnetic ring 3 of a permanent magnet 5 are fixed to the non-magnetic housing 6 through a fixing means arranged concentrically with a rotating shaft 1. The permanent magnet 5 is adherently fixed with an adhesive to the upper face of the ring 4. An oil bath cover 11 under the ring 4 is provided with a seal ring to form a gap seal between the cover 11 and the rotating shaft 1. The assembling of a magnetic fluid sealing device can thus be facilitated, and its life can be prolonged.

7. 发明专利

JPS62237172A SEAL RING 失效
公开(公告)号：JPS62237172A
公开(公告)日：1987-10-17
申请号：JP7813286
申请日：1986-04-07
申请人： KANSAI ELECTRIC POWER CO , HITACHI LTD
发明人： SUGIMOTO OSAMU , HOTTA TEIJI , ARAI KATSUTOSHI , AIZAWA KOJI , KAWAIKE KAZUHIKO , INOUE HISAO
IPC分类号： F16J15/34
摘要： PURPOSE:To enhance the sealing ability of a seal ring, by disposing a plurality of seal ring pieces in a circular groove formed in a casing so as to form them in a ring-like shape, and by securing the seal ring pieces to the casing with a bonding agent. CONSTITUTION:A sealing ring 2 has four split ring pieces 2' which are disposed in a circular groove formed in a bisplit type casing 8 and which are secured to the casing 8 with a bonding agent 9. Gaps h1, h2 are formed between the bonding section of the casing 8 and the seal ring piece 2', and the bonding agent 9 is filled in the gaps 9 so that the seal ring pieces 2' may be secured to the casing 8. Accordingly, the sealing end face of the sealing ring may be previously formed like an integral ring form, thereby it may be previously formed like an integral ring form, thereby it is possible to enhance the sealing ability of the seal ring.

8. 发明专利

JP2001349202A GAS TURBINE 失效
公开(公告)号：JP2001349202A
公开(公告)日：2001-12-21
申请号：JP2000174209
申请日：2000-06-06
申请人： HITACHI LTD
发明人： KITSUKA NOBUAKI , KAWAIKE KAZUHIKO , ANZAI SHUNICHI , UENO SANEYUKI
IPC分类号： F01D9/02 , F01D11/04
摘要： PROBLEM TO BE SOLVED: To provide a gas turbine capable of simplifying the constitution of a separating part of a closed cooling medium passage and an open cooling medium passage and capable of sufficiently preventing a leak of a refrigerant and supercooling of a blade part. SOLUTION: In this gas turbine having cooling medium flowing paths inside a turbine stationary blade 3 and formed so as to cool the stationary blade by making a cooling medium to flow to these cooling medium flowing paths, to partially recover the cooling medium after cooling the stationary blade and to blow off a part in main flow gas 20, the plural cooling medium flowing paths are arranged in the stationary blade 3, and at least one cooling medium flowing path in these cooling medium flowing paths cools the stationary blade by flow of the cooling medium supplied from an external part, and the cooling medium is recovered again after cooling, and the other cooling medium flowing path is formed so as to cool the stationary blade 3 by flow of the cooling medium 23 supplied from the external part, to blow off the partial cooling medium in the main flow gas 20 after cooling and to supply a cooling medium 23b of a residual part as a sealing medium to a rotary part arranged on the inner peripheral side of the stationary blade.

9. 发明专利

JP2000045705A GAS TURBINE 失效
公开(公告)号：JP2000045705A
公开(公告)日：2000-02-15
申请号：JP21682498
申请日：1998-07-31
申请人： HITACHI LTD
发明人： MARUSHIMA SHINYA , MATSUMOTO MANABU , IKEGUCHI TAKASHI , KAWAIKE KAZUHIKO
IPC分类号： F01D5/18 , F01D5/30
摘要： PROBLEM TO BE SOLVED: To prevent the lowering of efficiency of a gas turbine while reducing the leaked variable of the coolant by providing seals for restricting the flow-out of the coolant through a clearance between both dovetails between a disc dovetail part of a rotor blade and a blade dovetail part outside of a supplying circuit and a recovering circuit. SOLUTION: During the operation of a gas turbine, the main flow gas is flowed from a first stage rotor blade to a fourth stage rotor blade, and the cooling air is supplied to a center hole of a stub shaft, and supplied to the rotor blade through a radial hole 29 provided in the peripheral side of a disc 1. The air passed through the radial hole 29 is flowed through a rotor blade supply port 122, a rotor blade recovery port 124 and a radial hole 30 so as to cool the rotor blade. In the rotor blade, a clearance 117 exists between a dovetail part 102 and the disc 1 for installation of the dovetail part 102, but seal pins 124-126 are fitted in corresponding opening parts 127-129 so as to prevent the generation of leak of the cooling air along the clearance 117 in the axial direction.

10. 发明专利

JPH11153001A REFRIGERANT RECOVERY TYPE GAS TURBINE 失效
公开(公告)号：JPH11153001A
公开(公告)日：1999-06-08
申请号：JP31929097
申请日：1997-11-20
申请人： HITACHI LTD
发明人： MATSUMOTO MANABU , MARUSHIMA SHINYA , IKEGUCHI TAKASHI , KAWAIKE KAZUHIKO
IPC分类号： F01D5/08 , F02C7/18
摘要： PROBLEM TO BE SOLVED: To satisfactorily reduce thermal stress of a rotor part that is caused by the recovery of refrigerant for a moving blade and recover the refrigerant efficiently. SOLUTION: This gas turbine comprises a refrigerant supply channel which supplies refrigerant for cooling a moving blade, and a refrigerant recovery channel 71 which recovers the refrigerant which had cooled the moving blade, in its turbine rotor, and is formed to recover the refrigerant which had cooled the moving blade. Heat shield headers 75a and 75b are provided between one of the refrigerant supply channel or the refrigerant recovery channel 71 and the moving blade 40, the heat shield headers 75a and 75b are connected with one of the refrigerant supply channel or the refrigerant recovery channel through at least one connecting passage, and connecting pipes as many as the moving blades 40 are provided between the heat shield header 75 and the moving blade 40, resulting in the supply or the recovery of refrigerant to or from each moving blade 40 through the heat shield headers 75a and 75b and the connecting pipe.

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