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1. 发明专利

JPH05321603A CERAMIC ROTOR BLADE 失效
公开(公告)号：JPH05321603A
公开(公告)日：1993-12-07
申请号：JP13216392
申请日：1992-05-25
申请人： HITACHI LTD , TOKYO ELECTRIC POWER CO , ASAHI GLASS CO LTD
发明人： MACHIDA TAKASHI , MIYATA HIROSHI , FURUSE YUTAKA , TERAMAE TETSUO , TORIYAMA AKIRA , TAKESA KAZUHIKO
IPC分类号： F01D5/28 , F01D5/30
摘要： PURPOSE:To enhance the reliability of a rotor blade by fitting a ceramic blade having a dove-tail shape root part, in a metal disc or a shank, and by lowering the rigidity of end parts of a pad so as to restrain stress concentration in the contact end parts. CONSTITUTION:Each of pads 3 intervening between a ceramic blade 1 and a shank 2 is thinned around its contact end parts. Accordingly, the rigidity of opposite end parts of the pad 3 which are contact end parts lowers and according the contact end parts of the pad 3 does not become a part where a significant stress point exists even though a centrifugal force is applied to the ceramic blade 1 during nominal operation so as to avoid damaging the blade. Instead of thinning the end parts of the pad, grooves may be formed in the end parts of the pad, or only the end parts of the pad may be made of materials having a low rigidity.

2. 发明专利

JPH02230903A FITTING STRUCTURE OF CERAMIC MOVING BLADE 失效
公开(公告)号：JPH02230903A
公开(公告)日：1990-09-13
申请号：JP4985989
申请日：1989-03-03
申请人： TOKYO ELECTRIC POWER CO , HITACHI LTD
发明人： HARA YUKIYOSHI , WATABE NORIO , MACHIDA TAKASHI , MIYATA HIROSHI
IPC分类号： F01D5/30
摘要： PURPOSE:To improve fitness for preventing damage of ceramic gas turbine moving blades which are fitted into a metal disk or shank by forming each fit layer in a multilayer structure. CONSTITUTION:A ceramic moving blade 1 has a dovetail base, while it is fitted into a metallic disk 2 via a metallic thin plate 3. A fit layer consists of a deformation absorbing layer 6 and a fit material layer 7 and fits the ceramic moving blade 1 into a shank 4 rigidly. The deformation absorbing layer 6 prevents local stress from being concentrated on the ceramic moving blade when centrifugal force is applied to the ceramic moving blade by operation of a gas turbine. Fitness is thus improved, so that damage of the ceramic moving blades is prevented.

3. 发明专利

JPH0359960A GLASS SOLDER JOINT METHOD FOR SOLID ELECTROLYTE TUBE 失效
公开(公告)号：JPH0359960A
公开(公告)日：1991-03-14
申请号：JP19414589
申请日：1989-07-28
申请人： TOKYO ELECTRIC POWER CO , HITACHI LTD
发明人： OSHIMA MASAAKI , KOBAYASHI AKIRA , MACHIDA TAKASHI , MIYATA HIROSHI
IPC分类号： H01M2/02 , H01M10/39
摘要： PURPOSE:To facilitate quality control while an reduction in air tightness due to bubbles produced is prevented as well as to enable a glass solder layer to be uniformly thin in thickness by inserting a glass sheet adjusted in advance between a solid electrolyte tube and an inserting ring, and subjecting it to heat treatment thereafter so that connection is made by means of glass solder joint. CONSTITUTION:A glass sheet 10 is closely adhered onto the inner surface of an insulating ring 6 in a sodium-sulfur battery, then, a solid electrolyte tube 1 is inserted therein thereafter. After the position is aligned, the glass sheet is fused so as to be hardened by heat treatment so that the solid electrolyte 1 is connected with the inserting ring 6 by means of glass solder joint. Since the glass sheet 10 has been made in advance, a joint layer is so easily controlled is quality that air tightness will never be impaired. While, the thickness of a glass layer is also controlled by the thickness of the glass sheet. By this constitution, there hardly exists non-uniformity in the thickness of the glass solder layer and in quality, thereby making it possible to maintain air tightness excellent, and also to facilitate quality control.

4. 发明专利

GB2225137A System for administering life of plant 未知
公开(公告)号：GB2225137A
公开(公告)日：1990-05-23
申请号：GB8923409
申请日：1989-10-17
申请人： HITACHI LTD
发明人： SAKURAI SHIGEO , MIYATA HIROSHI , TAN TOSHIMI , KANEKO RYOICHI
IPC分类号： G01R31/00 , G01D21/00 , G01M99/00 , G07C3/00
摘要： A system clarifies the damaged state of a plant, and estimates the life expectancy of the plant so as to administer the integrity of the plant. The system includes an apparatus for estimating the life expectancy of each of various pieces of component constituting the plant, a data base controlling apparatus, an apparatus for estimating the life expectancy of the entire plant, and a plant life extension and evaluation apparatus. The system is capable of making a specific proposal of a life extension plan which is necessary to and effective for the extension of the entire plant, and which is proposed including economical evaluation, thereby facilitating the conservation of the integrity of the plant, and also facilitating the maintenance and control thereof.

5. 发明专利

GB2225137B METHOD FOR EXTENDING THE LIFE OF A PLANT. 未知
公开(公告)号：GB2225137B
公开(公告)日：1993-09-08
申请号：GB8923409
申请日：1989-10-17
申请人： HITACHI LTD
发明人： SAKURAI SHIGEO , MIYATA HIROSHI , TAN TOSHIMI , KANEKO RYOICHI
IPC分类号： G01R31/00 , G01D21/00 , G01M99/00 , G07C3/00
摘要： A system clarifies the damaged state of a plant, and estimates the life expectancy of the plant so as to administer the integrity of the plant. The system includes an apparatus for estimating the life expectancy of each of various pieces of component constituting the plant, a data base controlling apparatus, an apparatus for estimating the life expectancy of the entire plant, and a plant life extension and evaluation apparatus. The system is capable of making a specific proposal of a life extension plan which is necessary to and effective for the extension of the entire plant, and which is proposed including economical evaluation, thereby facilitating the conservation of the integrity of the plant, and also facilitating the maintenance and control thereof.

6. 发明专利

CA1250367A METHOD OF AND APPARATUS FOR ESTIMATING LIFE EXPECTANCY OF MECHANICAL STRUCTURES 未知
公开(公告)号：CA1250367A
公开(公告)日：1989-02-21
申请号：CA505794
申请日：1986-04-03
申请人： HITACHI LTD
发明人： SAKURAI SHIGEO , UMEZAWA SADAO , USAMI SABURO , MIYATA HIROSHI , TORIYA HAJIME , TSUBOUCHI KUNIYOSHI , KANEKO RYOICHI
IPC分类号： G06F15/20
摘要： A method of and an apparatus for estimating the life expectancy of mechanical structures to which a repeated load is applied. The relation between the length of the greatest crack formed in the material to be estimated and the life ratio of such material is obtained beforehand by using test pieces of the material, and the length of the greatest crack formed at the surface of the material is estimated by an extreme value statistical process from the lengths of the greatest cracks each formed at one of several sampling faces of the material. The life expectancy of a mechanical structure is estimated based on the estimated length of the greatest crack and the life ratio.

7. 发明专利

JPH10199923A POWER SEMICONDUCTOR MODULE 失效
公开(公告)号：JPH10199923A
公开(公告)日：1998-07-31
申请号：JP359097
申请日：1997-01-13
申请人： HITACHI LTD
发明人： KOIZUMI MASAHIRO , KAJIWARA RYOICHI , ONUKI HITOSHI , MIYATA HIROSHI
IPC分类号： H01L21/60 , H01L29/78
摘要： PROBLEM TO BE SOLVED: To retard deteriorating of the thermal fatigue of wires bonded to pads on a semiconductor chip by ultrasonically bonding the wires to pads, each having at least one closed region with a continuous or discontinuous annular groove. SOLUTION: This semiconductor module comprises an Al nitride insulation substrate 1, a collector electrode, an emitter electrode 3, a gate electrode 4 and a semiconductor chip 5 and has Al-Si alloy pads 6 having three continuous elliptical grooves, Al wires 7 and a heat sink 8. The pads 6, the emitter and the gate electrode 3, 4 on the chip 5 are ultrasonically wire-bonded using the wires 7. On the pads 6, three elliptic ring-like grooves approximately identical with the shape of non-adhered parts are formed by photolithography and etching, and the wires 7 are bonded.

8. 发明专利

JPH08209273A NICKEL BASED ALLOY FOR HEAT RESISTANT MATERIAL 失效
公开(公告)号：JPH08209273A
公开(公告)日：1996-08-13
申请号：JP1567095
申请日：1995-02-02
申请人： HITACHI LTD
发明人： OHASHI TETSUYA , HIDAKA KISHIO , IKEDA YUICHI , KONNO SHINYA , SAITO MASAKAZU , MIYATA HIROSHI , ITO OSAMU , YOSHINARI AKIRA , TAMAOKI HIDEKI
IPC分类号： C22C19/03
摘要： PURPOSE: To prevent the rupture of Ni based alloy due to the decrease of strength at the time of using by preventing the generation of anisotropic structural change (rafting) of γ'-phase at the time of using the Ni based alloy composed of γ-phase and γ' phase. CONSTITUTION: The width of the variation of stress generated in the γ-phase of the Ni based alloy is controlled to a value less than the nominal value of stress due to external force applied to the Ni based alloy. As a result, the reliability of a device such as a gas turbine using the Ni based alloy is improved.

9. 发明专利

JPH076719A ANALYZING DEVICE USING SUPERCONDUCTING PROBE OR ELECTRON EMISSION NEEDLE 失效
公开(公告)号：JPH076719A
公开(公告)日：1995-01-10
申请号：JP14454793
申请日：1993-06-16
申请人： HITACHI LTD
发明人： RI AKIRA , SATOU CHIE , MIYATA HIROSHI , AONO YASUHISA
IPC分类号： H01J37/06 , B82B1/00
摘要： PURPOSE:To provide information unobtainable with a normal conducting probe, e. g. the information on the polarization of a molecule or electron density, and high resolution in measurement by the characteristic of a supercondutive condition. CONSTITUTION:The probe 11 and electron emission needle of a scanning tunneling microscope and an electric field electron microscope are made of the raw material of a superconductor, a first and a second kind superconductor or an organic superconductor,w etc., and a specimen is observed in the superconducting condition of the probe 11 and the electron emission needle to obtain high resolution unobtainable with a normal conductive probe. When observing a specimen having on thick thickness such as a thin film and an organic molecule, etc., the specimen is stuck to or deposited on a superconducting substrate 13 to measure the substrate 13 in a superconducting condition to observe the material measurement of the specimen by utilizing exudation in a superconducting condition, the characteristic of a superconductor, or the condensation in an electron condition in a superconducting condition.

10. 发明专利

JPH04203302A CERAMIC STATIONARY BLADE 失效
公开(公告)号：JPH04203302A
公开(公告)日：1992-07-23
申请号：JP33295990
申请日：1990-11-29
申请人： HITACHI LTD , CENTRAL RES INST ELECT
发明人： NAKAKADO MASAAKI , MACHIDA TAKASHI , MIYATA HIROSHI , HISAMATSU NOBORU , MORI NORIYUKI , YURI ISAO
IPC分类号： F01D9/02
摘要： PURPOSE:To reduce a quantity of heat invading into a metal parts and decrease a quantity of cooling air by providing a seal means against combustion gas on an opposite wall portion between mutually adjacent unit stationary blades among ceramic stationary blades for a gas turbine. CONSTITUTION:The cross sectional shape of a seal plate 17 corresponds to the cutting-out shape of the edge surface of outside walls 3, 3'. The seal plate 17 is installed between the mutually adjacent outside walls 3, 3', fills up a space in the circumferential direction, and eliminates a bypass stream caused by a radial flow of combustion gas. A seal plate 18 is installed between mutually adjacent outer heat insulators 9, 9' and outer shrouds 5, 5', so as to block voids in the combustion gas stream flowing in the axial direction, and eliminates any bypass stream caused by the combustion gas which flows out from an upstream side edge surface of stationary blade rows into gaps between the outer side walls 3, 3' and the outer shrouds 5, 5'. A seal plate 19 is provided between the mutually adjacent outer shrouds 5, 5' so as to block voids in the circumferential direction, and eliminates flowing-in of cooling air which is supplied to the outside of the outer shrouds 5, 5' into a combustion gas passage. Subsequently, a quantity of heat flowing in a metal parts can be reduced.

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