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1. 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.

2. 发明专利

JPS63219964A SHAFT SEALING DEVICE 失效
公开(公告)号：JPS63219964A
公开(公告)日：1988-09-13
申请号：JP4758787
申请日：1987-03-04
申请人： HITACHI LTD , KANSAI ELECTRIC POWER CO
发明人： AIZAWA KOJI , ARAI KATSUTOSHI , KIKUCHI KEIZO , KARITA MAKOTO , SUGIMOTO OSAMU , HOTTA TEIJI
IPC分类号： F16J15/34
摘要： PURPOSE:To fix a flange easily and reliably to a rotary shaft by setting such that the thrust force functioning onto the flange is applied onto a stepped projecting face of the rotary shaft through the differential pressure between the opposite ends of the flange. CONSTITUTION:A gap 16 is formed at the under face of a flange 2 independently from a shaft seal space S and communicated with the atmospheric side space Po at the upper face A side of the flange 2 through a communication hole 11 made closely to the inside of the flange 2 in the axial direction. Pressure distribution on the upper and lower faces A, B of the flange 2 is such that thrush force on the upper face A is higher than that on the under face B and down ward force functions continuously onto the flange 2. Since the under face side of the flange 2 is supported by a stepped projection 1' previously formed in the rotary shaft 1, the flange 2 can be secured at predetermined position.

3. 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.

4. 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.

5. 发明专利

JPH0299777A HIGH SPEED HIGH PRESSURE FLUID EQUIPMENT 失效
公开(公告)号：JPH0299777A
公开(公告)日：1990-04-11
申请号：JP25076888
申请日：1988-10-06
申请人： HITACHI LTD
发明人： IIJIMA SHIRO , SAKAMOTO HIROSHI , KITAZAWA CHOSHIRO , KIKUCHI KEIZO
IPC分类号： F04D29/02 , F03B11/00 , F16K27/00
摘要： PURPOSE:To protect equipment from the breakage due to the erosion, abrasion, corrosion, etc. by attaching a ceramics sintered body which possesses the special material characteristics by an organic adhesive onto the contact surface with the high speed and high pressure fluid such as water and steam of the basic member of the equipment. CONSTITUTION:A ceramic sintered body 1 which possesses the material characteristic represented by (tensile strength) /(2XYoung's modulus) of 200 MPaX10 or more and a hardness of Hv 1,400 or more is attached by an organic adhesive 3 onto a contact surface with the high speed high pressure fluid such as water and steam of the basic member 2 of equipment, and the contact part with the high speed and high pressure fluid or air in the solidified part of the above- described adhesive is sealed by a paint 4 which possesses water repulsion performance and waterproofness. By this ceramics sintered body, the erosion, abrasion and corrosion due to the passing of fluid are prevented. Further, the high polymeric adhesive resin suppresses the reduction of the adhesion strength generated by the adsorption of moisture through the covering by the water repulsive resin.

6. 发明专利

JPH0220832B2 失效
公开(公告)号：JPH0220832B2
公开(公告)日：1990-05-10
申请号：JP10573982
申请日：1982-06-18
申请人： HITACHI LTD
发明人： KIKUCHI KEIZO
IPC分类号： F03B15/00 , F03B15/14

7. 发明专利

JPH02153870A PRODUCTION OF CERAMIC SINTERED COMPACT 失效
公开(公告)号：JPH02153870A
公开(公告)日：1990-06-13
申请号：JP30784888
申请日：1988-12-07
申请人： HITACHI LTD
发明人： SAKAMOTO HIROSHI , NAKAZAWA TETSUO , IIJIMA SHIRO , KIKUCHI KEIZO
IPC分类号： C04B38/00
摘要： PURPOSE:To obtain a ceramic sintered body usable at ambient temperature under bad environment and capable of firmly adhering by molding ceramics/ ceramics-carbon fiber composite, sintering the resultant molded article in vacuum or inert gas and burning carbon fiber. CONSTITUTION:A ceramics/ceramics-carbon fiber composite is molded and sintered in vacuum or inert gas and then the carbon fiber is burned by heating in atmosphere to provide the porous aimed sintered compact. The ceramics have various characteristics lacking in metal and plastics. But the range usable in only ceramics is few and limited to small component. In a case of large scale, the ceramics must be used in joining to metals. Since pores formed on bonded surface in the above-mentioned production are three-dimensionally crossed each other, adhesive is penetrated into the inside of the pores and adhesion of adhesive with ceramics or metals, etc., are made firm. Thereby bonding properties of the component having bonded ceramics and used under bad environment can be remarkably improved.

8. 发明专利

JPS6358263B2 失效
公开(公告)号：JPS6358263B2
公开(公告)日：1988-11-15
申请号：JP9225381
申请日：1981-06-17
申请人： HITACHI LTD
发明人： TAKAKUSAKI TSUNEHIKO , KIKUCHI KEIZO
IPC分类号： F03B15/04 , F03B15/12

9. 发明专利

JPS62279276A GUIDE VANE PROTECTING DEVICE FOR HYDRAULIC MACHINERY 失效
公开(公告)号：JPS62279276A
公开(公告)日：1987-12-04
申请号：JP12109386
申请日：1986-05-28
申请人： HITACHI LTD
发明人： SATO ASAMI , KIKUCHI KEIZO
IPC分类号： F03B3/18
摘要： PURPOSE:To spread the function range of a protecting device by operating the first protecting device which does not cut a weak point pin in the range starting from the perfect opening of a guide vane to a certain opening degree and operating the second protecting device which cuts the weak point pin in the range over the above-described range. CONSTITUTION:An upper guide vane lever 6A and a lower guide vane lever 6B are connected by a weak point pin 4. When an obstacle nipped by a guide vane 8 is smaller than the shift-enable range L of a connecting pin 13, the connecting pin 13 is pushed back by the stability force of a spring 11, and the guide vane 8 returns to a synchronization position. When the obstacle is larger than the shift-enable range L, the connecting pin 13 shifts up to the contact with a suppressing block 12, and when the larger operation force is applied, the weak point pin 4 is cut, and the upper guide vane lever 6A is turned. Thus, the captioned protecting device can be operated over the whole range of the guide vane operation.

10. 发明专利

JPH0524222B2 失效
公开(公告)号：JPH0524222B2
公开(公告)日：1993-04-07
申请号：JP10194087
申请日：1987-04-27
申请人： HITACHI LTD
发明人： SATO KOJI , KONUMA TSUTOMU , MATSUMOTO TOSHIMI , TAKAYASU HIROSHI , KIKUCHI KEIZO
IPC分类号： C22C38/00 , C22C38/52 , C22C38/58

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