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21. 发明专利

JPS61236734A METHOD FOR EXTRACTIVE SEPARATION WITH SUPERCRITICAL FLUID AND APPARATUS THEREFOR 失效
公开(公告)号：JPS61236734A
公开(公告)日：1986-10-22
申请号：JP7837785
申请日：1985-04-15
申请人： HITACHI LTD
发明人： TAKAKUSAKI TSUNEHIKO , SATO JOSHIRO , YOSHIDA MASAHIRO , TAKAHASHI SANKICHI , MATSUZAKI HARUMI , KUBOTA MASAYOSHI
IPC分类号： B01D11/00 , C07B63/00
摘要： PURPOSE:To obtain the objective component in high efficiency in the extraction of the component from a source containing plural components using a supercritical fluid, by equalizing the pressure of the extraction source supplied to the extraction process and the spressure of the discharging path of the extraction residue to the pressure of the extraction process. CONSTITUTION:A valuable component is extracted from a source liquid such as fish oil by contacting the extraction source containing plural components with a supercritical solvent to effect the solvent extraction of the objective component (the extraction step 8), and separating the objective component from the components extracted in the step 8. The extraction source 35 is pressurized (31) to a level nearly equal to the pressure in the extraction step 8 and transferred to the extraction step 8. At the same time, the extraction residue is discharged to the discharging apparatus 43 maintained to a pressure nearly equal to the pressure in the extraction step. The supply of the extraction source and the discharge of the extraction residue can be carried out keeping the operation condition of the separation apparatus to enable the continuous and automatic operation of the apparatus.

22. 发明专利

JPH08254173A WATER TURBINE AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH08254173A
公开(公告)日：1996-10-01
申请号：JP9797696
申请日：1996-04-19
申请人： HITACHI LTD
发明人： USAMI KENICHI , TAKAYASU HIROSHI , SATO KOJI , FUKUI HIROSHI , AKAHORI KIMIHIKO , SATO JOSHIRO , KIKUCHI KEIZO
IPC分类号： F03B3/12 , B23K9/04 , B23K10/02 , B23K35/32 , F03B11/04
摘要： PURPOSE: To suppress the occurrence of cavitation and sand wear by a method wherein composite powder of austenite stainless steel and metal carbide ceramics is used, and a padding layer having a coagulation texture structure wherein ceramics particles remain is formed on the surface of an apparatus member surface. CONSTITUTION: A runner body being the moving vane of a water turbine has a plurality of vanes 3 located between a crown 1 and a shroud 2, and provided with a runner cone 4, guide vanes 5, stay vanes 6, a runner liner 7, and a facing plate 8. In this case, a member having a padding weld layer having cavitation resistance higher than that of a parent material is arranged at a part on which an impact by flow water is exerted. A padding weld layer forms a metal texture having a matrix of austenite stainless steel and dispersing carbide. Further, the austenite stainless steel contains 0.05-0.15wt.% C, 0.2-1.0% Si, 7-13wt.% Mn, 2-7wt.% Ni, and 17-23wt.% Cr or is a steel containing 1-3wt.% Mo or other.

23. 发明专利

JPH05155665A CARBON FIBER COMPOSITE CERAMIC SLIDING MEMBER AND ITS PRODUCTION 失效
公开(公告)号：JPH05155665A
公开(公告)日：1993-06-22
申请号：JP34947991
申请日：1991-12-09
申请人： HITACHI LTD
发明人： KIKUCHI SHIGERU , ARAKAWA HIDEO , SAKAMOTO HIROSHI , SATO JOSHIRO
IPC分类号： C04B35/80 , F16C33/24
摘要： PURPOSE:To provide the subject sliding member having proper orientation of carbon fiber and excellent wear resistance, which can be used for various bearing members and sliding members under any environment, and to provide the manufacturing method thereof. CONSTITUTION:This sliding member consists of a carbon fiber composite ceramic sintered body containing ceramics and carbon fibers, and is obtd. by sintering. The proportion of carbon fibers oriented in the direction at 40-90 angular from the sliding surface of the sintered body is >=1.5vol.% of the volume of the body. These carbon fibers consist of continuous long fibers oriented in one direction or crossing in two-dimensional or three-dimensional directions, or of short fibers randomly oriented in two-dimensional directions. This ceramic body is manufactured by adding and mixing carbon fibers having desired orienting property to ceramic powder as the matrix component, sintering the mixed material, and then processing the sintered body so that the specified proportion of carbon fibers is oriented in the direction at specified angle as described above from the sliding surface.

24. 发明专利

JPH0443682B2 失效
公开(公告)号：JPH0443682B2
公开(公告)日：1992-07-17
申请号：JP24878086
申请日：1986-10-20
申请人： HITACHI LTD
发明人： KUBOTA MASAYOSHI , MATSUZAKI HARUMI , OOKOCHI ISAO , TAKAHASHI SANKICHI , YOSHIDA MASAHIRO , TAKAKUSAKI TSUNEHIKO , SATO JOSHIRO
IPC分类号： G01N30/02 , B01D11/00 , C07B63/00 , C07C51/00 , C07C51/48 , C07C53/126 , C07C57/03 , C07C57/07 , C07C67/00

25. 发明专利

JPH04124468A VANE FOR FLUID MACHINE 失效
公开(公告)号：JPH04124468A
公开(公告)日：1992-04-24
申请号：JP24404890
申请日：1990-09-17
申请人： HITACHI LTD
发明人： OBA RISABURO , SOYAMA HITOSHI , TOSHIMA MASAMI , TANABE SEIICHI , SATO JOSHIRO
IPC分类号： F03B3/12 , F01C21/08
摘要： PURPOSE:To obtain such vane shape as to correspond in a wide operating range without lowering its performance by forming the front edge part of a vane into elliptical shape with its major axis direction to be the flow direction, and providing this front edge part in such a way as to be in contact with the pressure face and negative pressure face of the vane. CONSTITUTION:A vane 1 is formed of a negative pressure face 2, a pressure face 3 and a front edge part 6. The front edge part 6 is formed into elliptical shape with its major axis direction to be the flow direction, and provided in such a way as to be in contact with the negative pressure face 2 and the pressure face 3. As a result, breakaway generated from the front edge part of the vane 1 is controlled by the pressure distribution on the vane face. With this constitution, the pressure distribution of the vane front edge part 6 can be adjusted, and thereby the flow breaking away once at the front edge part 6 can be attached again. Large loss caused by the existing breakaway can be therefore reduced in large degree.

26. 发明专利

JPH02230968A WATER TURBINE AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH02230968A
公开(公告)日：1990-09-13
申请号：JP28893389
申请日：1989-11-08
申请人： HITACHI LTD
发明人： USAMI KENICHI , TAKAYASU HIROSHI , SATO KOJI , FUKUI HIROSHI , AKAHORI KIMIHIKO , SATO JOSHIRO , KIKUCHI KEIZO
IPC分类号： F03B11/04 , B23K9/04 , B23K10/02 , B23K35/32 , F04D29/22
摘要： PURPOSE:To prevent the corrosion of an apparatus and improve the life by using a metal organization dispersed with a carbide in a matrix made of austenite stainless steel for a deposit welding layer with high cavitation resistance. CONSTITUTION:In a water turbine provided with a guide vane 5 adjusting the flow of flowing water and a runner rotated by flowing water, a deposit welding layer 10 with cavitation resistance higher than that of a base material is applied to a portion applied with shocks by flowing water, e.g. the guide vane 5. A mixture of austenite stainless steel powder and metal carbide ceramic powder is melted by a plasma arc and fed to a welded portion, and the deposit welding layer 10 is formed at the desired thickness while a pool of molten metal is generated at this portion. The corrosion by cavitation and abrasion by sediment are suppressed, and the life can be extended.

27. 发明专利

JPH0275622A RESIN COMPOSITION AND ITS USE 失效
公开(公告)号：JPH0275622A
公开(公告)日：1990-03-15
申请号：JP22743988
申请日：1988-09-13
申请人： HITACHI LTD
发明人： SUGANO SHU , KOYAMA TORU , USAMI KENICHI , SATO JOSHIRO
IPC分类号： C08G59/34 , C08G59/50 , C09D163/00 , C09D163/08 , F03B7/00 , F03B11/04
摘要： PURPOSE:To obtain a resin compsn. with excellent cavitation resistance and sand abrasion resistance by compounding a rubber-modified epoxy compd. and an aliph. polyamidepolyamine. CONSTITUTION:This resin compsn. comprises a rubber-modified epoxy compd. and an aliph. polyamidepolyamine as a curing agent. It is pref. that said resin compsn. contains an inorg. filler and/or polybutadiene rubber. In addition, it is pref. that said rubber-modified epoxy compd. contains 50-70wt.% polybutadiene, siloxane, fluoroalkyl or fluoroalkyl ether skeleton. Furthermore, it is pref. that said aliph. polyamide is a compd. of the formula (wherein m and n are each 1-100). It is pref. that said inorg. filler is an inorg. filler with a mean particle diameter of 8-20mu and/or a whisker or a mica filler the surface of which is treated with a coupling agent.

28. 发明专利

JPH0242181A WATER TURBINE FOR RIVER CONTAINING SEDIMENT 失效
公开(公告)号：JPH0242181A
公开(公告)日：1990-02-13
申请号：JP19275488
申请日：1988-08-03
申请人： HITACHI LTD
发明人： OKAMURA TOMOYOSHI , TOSHIMA MASAMI , TAKAGI TAKEO , USAMI KENICHI , SATO JOSHIRO
IPC分类号： F03B11/04
摘要： PURPOSE:To suppress erosion and improve the life of a water turbine by feeding the water containing sediment with the concentration lower than that of the inflow water from a river on the water turbine flow water surface of the runner blades, guide vanes, and runner seal sections of the water turbine and forming the water film of the feed water on the water turbine flow water surface. CONSTITUTION:A sediment grain separator 7 is provided in the runner crown 1a of the runner 1 of a water turbine. Multiple water intake holes 8 are formed on the outer periphery toward the upper section of a water intake pipe 8 concentrically provided with the rotary main shaft 6 of the sediment grain separator 7. Conduit pipes 9 are radially provided along the inner wall of the runner crown 1a below the water intake pipe 8. The conduit pipes 9 are guided to the runner outer periphery 1b, the water containing low-concentration sediment is blown out through multiple blowout holes 10a provided on the runner outer periphery 1b, multiple blowout holes 10b provided on the runner outer periphery 1c on the shroud side, and multiple blowout holes 10c formed on blades 1d near the runner inlet to form a water film on the water turbine flow water surface, the erosion by the water containing high-concentration sediment is prevented.

29. 发明专利

JPH0240532A METHOD AND APPARATUS FOR MEASURING SEDIMENT CONCENTRATION OF INFLUENT WATER IN HYDRAULIC MACHINE 失效
公开(公告)号：JPH0240532A
公开(公告)日：1990-02-09
申请号：JP19062188
申请日：1988-08-01
申请人： HITACHI LTD
发明人： OKAMURA TOMOYOSHI , TOSHIMA MASAMI , TAKAGI TAKEO , SATO JOSHIRO
IPC分类号： G01N9/26
摘要： PURPOSE:To shorten a measuring time largely and to make it possible to perform measurement at a low cost by providing a water column incorporating sediment and a pure water column which does not incorporate sediment, and measuring the pressure difference between the lower ends of both water columns with the differential pressure. CONSTITUTION:A draining valve 11 is opened. Water in an upper water tank 4 is guided into a pipe 9 for water incorporating sediment. The water is drained through a draining pipe 12. After the pipe 9 is filled, the draining valve 11 is closed. Aqueduct water 7 is supplied into a pure water pipe 8 from the outside. The upper end of the pipe 8 is aligned with the water surface of the water tank 4. This can be achieved readily by opening the water supply port for the water 7 and making the water overflow into a container-like float 6. In this way, the liquid column in the pipes 9 and 8 are prepared at the same height. Thereafter, a differential pressure DELTAP' in a differential pressure gage 10 is read. A sediment concentration C' for the measured differential pressure DELTAP' is obtained from the relationship between a differential pressure DELTAP and a sediment concentration C which are measured and prepared beforehand. When the concentration C' exceeds an allowable concentration Ca which is determined from the life of a water turbine, the operation of the water turbine is stopped.

30. 发明专利

JPS6474408A THREE-DIMENSIONAL MEASURING INSTRUMENT 失效
公开(公告)号：JPS6474408A
公开(公告)日：1989-03-20
申请号：JP23331487
申请日：1987-09-17
申请人： HITACHI LTD , MITUTOYO CORP
发明人： TAKAKUSAKI TSUNEHIKO , YOSHIDA MASAHIRO , HARANO MASAMI , SATO JOSHIRO , NAKATANI TADAO
IPC分类号： G01B21/20 , G01B5/012 , G01B21/00 , G01B21/04 , G05B19/18
摘要： PURPOSE:To switch and use a noncontact type and a probe type detection sensor by fitting both sensors detachably and making the optical axis and optical-axis direction of the noncontact type detection sensor coincident with the Z-axial coordinate system of a driving mechanism. CONSTITUTION:An intermediate adapter 7 provided with parts where the noncontact type and probe type detection sensors 2a and 2b are mounted is provided detachably on the Z-axial spindle 6 of the driving mechanism. Fitting shafts 8a and 8b provided to said parts are provided to the noncontact type and probe type detection sensors 2a and 2b. Thus, the noncontact type and probe type detection sensors 2a and 2b are fitted detachably at the specific positions of the device. When the noncontact type sensor 2a is fitted, its optical axis and optical-axis direction are made coincident with the Z-axial coordinate system of the driving mechanism 3.

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