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21. 发明专利

JPH0341318A DETECTOR OF ELECTROMAGNETIC FLOWMETER 失效
公开(公告)号：JPH0341318A
公开(公告)日：1991-02-21
申请号：JP17549389
申请日：1989-07-10
申请人： HITACHI LTD
发明人： KAIHO MASAYUKI , IKEGAWA MASAHIRO , FUKUNAGA MASAO , UEMATSU IKUO
IPC分类号： G01F1/58
摘要： PURPOSE:To facilitate fitting to a piping system and also to shorten a length of insertion into the piping system by separating a measuring tube element fitted with electrodes from a magnetic field generating device and by separating the magnetic field generating device vertically so that each part of the separated device contains an exciting coil. CONSTITUTION:A detector is constructed of a measuring tube 5 having an insulative lining 6 provided inside, two sets of magnetic filed generating devices provided vertically and having exciting coils 4a and 4b and magnetic poles 3a and 3b generating a magnetic field in the radial direction of the measuring tube 5, a pair of electrodes 7a and 7b positioned on a straight line intersecting the direction of the magnetic field and the direction of the axis of the tube perpendicularly and fitted inside the measuring tube 5, and casings 1a and 1b housing the whole. The coils 4a and 4b and the magnetic poles 3a and 3b are fitted to cores 2a and 2b provided so that the magnetic field may not leak outside, and further the cores 2a and 2b are fitted to the casings 1a and 1b. By separating the magnetic field generating device in two vertically and further by separating the magnetic field generating devices from the measuring tube 5, in this way, an operation for fitting can be facilitated.

22. 发明专利

JPS6467676A PARALLEL COMPUTER 失效
公开(公告)号：JPS6467676A
公开(公告)日：1989-03-14
申请号：JP22393387
申请日：1987-09-09
申请人： HITACHI LTD
发明人： MUKAI HIROSHI , IKEGAWA MASAHIRO
IPC分类号： G06F15/16 , G06F15/177 , G06F15/80
摘要： PURPOSE:To improve the effect of a parallelizing by equalizing operating quantity, which is charged by respective operating units, from information obtained by an operating quantity measuring means and decreasing a waiting time. CONSTITUTION:Operating units 1-1-1-4, which execute an operation processing to given data, are arranged in a lattice shape in plural numbers. Then, an operating quantity measuring means is provided to measure the operating quantity in the respective operating units 1-1-1-4 of an operating unit group 1 to attain communication with the adjacent operating units 1-1-1-4 and a data moving means is provided to move the data among the respective operating units 1-1-1-4 so that the operating quantity of the respective operating units 1-1-1-4 can be equalized from the information obtained by this operating quantity measuring means. Thus, the equalization of an operating load is executed and the efficiency of the parallelizing can be improved.

23. 发明专利

JPS57308A MOVING VANE FOR TURBINE 失效
公开(公告)号：JPS57308A
公开(公告)日：1982-01-05
申请号：JP7426280
申请日：1980-06-04
申请人： HITACHI LTD
发明人： IKEGAWA MASAHIRO , TORII TAKUJI , KAWAMURA KEIZOU
IPC分类号： F01D5/18
摘要： PURPOSE:To efficiently cool the moving vane of a turbine which is provided with a coolant passage under the surface, by separating a liquid coolant from vapor produced in the passage and by causing the vapor to go out through small holes opened in the surface of the vane. CONSTITUTION:To cool the moving vane of a turbine, a coolant 11 flows from a reservoir 12 at the mounted bottom of the vane and overflows a weir 13 and enters into a main coolant passage 2. The coolant flows due to a thermosiphon effect as shown by an arrow 14 and moves from a coolant passage 3 at the tip of the vane to another coolant passage 4 under the surface of the vane. The coolant 11 enters into a reservoir 5 after cooling the vane. The coolant 11 then flows into the main passage 2 again through a goove 6 and repeats the above-mentioned process of flow. In the process, vapor produced in the cooling coolant passage 4 is separated from the liquid coolant in the reservoir 5 and then flows into a vapor passage 7 through a weir 8 and enters into a main high-temperature gas flow through numerous small holes 9 in the surface of the vane to keep the heat of high-temperature gas from coming into the moving vane.

24. 发明专利

JPS5669401A MOVING BLADE OF TURBINE 失效
公开(公告)号：JPS5669401A
公开(公告)日：1981-06-10
申请号：JP14555179
申请日：1979-11-12
申请人： HITACHI LTD
发明人： IKEGAWA MASAHIRO , TORII TAKUJI , KAWAMURA KEIZOU
IPC分类号： F01D5/18 , F01D5/08
摘要： PURPOSE:To uniformly introduce a cooling liquid into a cooling passage to uniformly cool a turbine bucket, by providing a capillary material for the measuring weir of the cooling passage in the turbine bucket. CONSTITUTION:A cooling liquid is introduced into a passage 4 at a mount 3 through the inlet port 2 of a turbine disc 1 to cool the mount 3. A capillary material 9 such as a wick or a porous material is provided at the front end of a measuring weir 5. After the cooling liquid having overflowed the surface 8 of the measuring weir 5 is caused to uniformly flow around in the circumferential direction by the capillary force of the capillary material 9, the cooling fluid is introduced into a cooling passage 7. The cooling liquid can thus be uniformly introduced into each cooling passage in a turbine bucket to uniformly cool the bucket even if the surface of the measuring weir 5 is not so formed that the distance of each part of the surface from the axis of a rotary turbine shaft is not accurately equal.

25. 发明专利

JPS54104532A ELECTRIC WINDING AND METHOD OF PRODUCING SAME 失效
公开(公告)号：JPS54104532A
公开(公告)日：1979-08-16
申请号：JP1145878
申请日：1978-02-06
申请人： HITACHI LTD
发明人： OOGURO TAKAHIRO , NAKAYAMA HISASHI , IKEGAWA MASAHIRO , KAMIIDE YASUO
IPC分类号： H01F41/06 , H01F27/28
摘要： PURPOSE:To uniformly cool effectively electric windings by improving the cooling fluid flow between respective winding units and restricting the local temperature increase of the windings. CONSTITUTION:Controllers 16 for reducing the sectional area of the cooling passages are disposed at every twice the pitches of the winding units in intermediate vertical cooling passages 15 formed among divided winding units 1a, 1b to increase or decrease the sectional area of the passages 15 at every winding unit pitch. Thus, oppositely directional flows are induced in the horizontal cooling passages among the winding units to improve the winding units by means of the induced flow and to uniformly cool without local overheat. It can also sufficiently secure the radial width of the intermediate passages formed between the divided winding units and partly reduce the sectional area of the cooling passages to thereby reduce the flow loss.

26. 发明专利

JPS53118729A WINDING FOR STATIC INDUCTION EQUIPMENT 失效
公开(公告)号：JPS53118729A
公开(公告)日：1978-10-17
申请号：JP3345477
申请日：1977-03-26
申请人： HITACHI LTD
发明人： OOGURO TAKAHIRO , NAKAYAMA HISASHI , IKEGAWA MASAHIRO , KAMIIDE YASUO
IPC分类号： H01F27/28
摘要： PURPOSE:To restrict a local temperature rise in the winding to a small level, with a flow of cooling fluid made smooth in the horizontal cooling path, by an arrangement in an adequate pitch of a control unit, for shortening a width in a circumferential direction of the vertical cooling path, in at least any one of inner and outer side vertical cooling path.

27. 发明专利

JP2559522B2 失效
公开(公告)号：JP2559522B2
公开(公告)日：1996-12-04
申请号：JP10761590
申请日：1990-04-25
申请人： HITACHI LTD
发明人： FUKUNAGA MASAO , UEMATSU IKUO , IKEGAWA MASAHIRO , KAIHO MASAYUKI
IPC分类号： G01F1/58 , G01F1/60 , G01F25/00

28. 发明专利

JPH08320897A PARALLEL NUMERICAL ANALYSIS METHOD 失效
公开(公告)号：JPH08320897A
公开(公告)日：1996-12-03
申请号：JP12774695
申请日：1995-05-26
申请人： HITACHI LTD
发明人： KAIHO MASAYUKI , IKEGAWA MASAHIRO
IPC分类号： G06F15/16 , G06F17/50
摘要： PURPOSE: To provide the numerical analysis method which is short in calculation time and can take a large-scale analysis and uses plural meshes by assigning processors to the respective meshes and performing calculation, and separately providing a processor which generates data for receiving and passing calculation results between the processors. CONSTITUTION: The meshes includes three kinds of mesh, i.e., a mesh 1 for the calculation of the whole analytic area, a circular mesh 2, and a square mesh 3. A processor 1, a processor 2, and a processor 3 are put in charge of the calculation of the respective meshes. A processor 0 generates the data for receiving and passing the calculation results. The calculating processes of the meshes are performed in parallel and then the processor 0 generates the data for receiving and passing the calculation results. After the data for receiving and passing the results are generated, the calculation results are transferred between the processors. Convergence is decided at the point of time and when the convergence is obtained, the calculation is ended, but when not the said flow is repeated by making a return to the calculation of the respective meshes.

29. 发明专利

JPH08193912A METHOD FOR CREATING ANALYTIC LATTICE 失效
公开(公告)号：JPH08193912A
公开(公告)日：1996-07-30
申请号：JP470995
申请日：1995-01-17
申请人： HITACHI LTD
发明人： SHIMIZU ISATO , KATO CHIYUKI , KAIHO MASAYUKI , IKEGAWA MASAHIRO
IPC分类号： G01M9/00 , G06F17/50
摘要： PURPOSE: To save the memory capacity and the amount of calculation while keeping high accuracy by dividing an overlapping lattice in the analytic region of finite element method finely by octant method. CONSTITUTION: A lattice overlapping a finite mesh 105 stretched around an analytic object 101 is divided finely by octant method. In other words, a differential lattice 102 at a division level 1 is subjected to octantal division to obtain a differential lattice 103 at division level 2 which is further divided into a differential lattice 104 at division level 3. The element division is carried out by selecting a lattice point 706 (707) of a concerned element 705 on the negative (positive) side plane in the direction 3 for all lattice points (m) with reference to an element lattice point reference table. A lattice point 708 located between the lattice points 706, 707 an another lattice point 709 linked therewith are then determined with reference to a lattice point linking table. Subsequently, unlinked lattice points 708 are linked 710 to obtain a new element 711 (global number m+ 1). Since the density of lattice can be regulated around the analytic region of finite element method and other part, memory capacity and the amount of computation can be saved.

30. 发明专利

JPH0598891A TUNNEL PROVIDED WITH COMPRESSION WAVE SUPPRESSING DEVICE 失效
公开(公告)号：JPH0598891A
公开(公告)日：1993-04-20
申请号：JP26451791
申请日：1991-10-14
申请人： HITACHI LTD
发明人： KAIHO MASAYUKI , IKEGAWA MASAHIRO , HIGAKI HIROSHI , OKAZAKI MASATO
IPC分类号： E21D9/14 , E21D11/38
摘要： PURPOSE:To decrease compression wave which occurs when a high speed rolling stock such as that of the Shinkansen super-express railways, etc., rushes into a tunnel by installing a vibration system which consists of a shock absorbing plate and a shock absorbing spring and also absorbing plate connecting rubber on the internal wall of the tunnel. CONSTITUTION:A supporting plate 1, shock absorbing springs 3 installed at not lees than several spots of it, and shock absorbing plates 2 mounted on the top ends of the shock absorbing springs 3 so that each of them constitutes the internal wall of a tunnel, and absorbing plate connecting rubber 4 for connecting together each of them are mounted on the internal wall 5 of the tunnel to constitute a compression wave suppressing device. When this device is installed at not less than one spot inside the tunnel, shock absorbing plates 2 are moved outside as if they are pushed to the internal wall of the tunnel by the pressure raised in the tunnel when the compression wave passes through the suppressing device, shock absorbing springs 3 contract, and the absorbing plate connecting rubber 4 stretches. Then, compression wave energy is changed to the mechanical energy of a vibration system consisting of shock absorbing plates 2 and shock absorbing springs 3, and the pressure level of the compression wave is decreased.

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