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1. 发明专利

JPH07174779A METHOD FOR DIAGNOSING ACCELERATION SENSOR AND SENSOR CONTROLLER 失效
公开(公告)号：JPH07174779A
公开(公告)日：1995-07-14
申请号：JP32246593
申请日：1993-12-21
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： OGASAWARA YUJI , SUZUKI MASAKI , HANZAWA KEIJI , ICHIKAWA NORIO , SUGISAWA YUKIKO , HORIE JUNICHI
IPC分类号： G01P21/00 , G01P15/00
摘要： PURPOSE:To provide a method for diagnosing acceleration sensor and sensor controller of a low cost and high reliability which is capable of diagnosing both abnormality and normality of backup sensor without complicating the structure of the sensor controller. CONSTITUTION:An electronic sensor 2 in a controller 1 inputs the electric signal of acceleration level detected in the normal time to a microcomputer 3. Also, from the voltage change in a resistor 9 connected in series to the contact 7 of a backup sensor 5, on-off signal of the contact 7 is input to the microcomputer 3. The microcomputer 3 compares the design function level of the backup sensor 5 and the acceleration level for the on-off motion of the contact 7 to diagnose the normality and abnormality of the backup sensor 5. If it is normal, a driver 4 actuates, current flows from a battery 8 to a squib 6 and the swell of air bag is confirmed.

2. 发明专利

JPH11132863A HIGH-TEMPERATURE GAS PIPING 失效
公开(公告)号：JPH11132863A
公开(公告)日：1999-05-21
申请号：JP30157497
申请日：1997-11-04
申请人： HITACHI LTD
发明人： SHIDA YU , SUZUKI MASAKI , SUGAWARA YOSHIAKI , AKITA AKIRA , ICHINOSE TOKUYUKI
IPC分类号： G01K1/14 , G01K13/02
摘要： PROBLEM TO BE SOLVED: To restrict a temperature rise of a double tube because of heat conduction from a high-temperature fluid and at the same time prevent a damage because of vibrations, by arranging a projection to face to a temperature pocket at the inside of an area which is the inside of an outer tube of a protecting tube and the outside of an inner tube. SOLUTION: A thermometer pocket vibration isolation 14 of a cylindrical projection of a height L of approximately 20 mm is set at a position inside of protecting tubes 11, 12, 13 and outside of a liner 5 by approximately 60-150 mm. A shift of a thermometer pocket 10 because of vibrations of a high-temperature internal fluid 4 is supported by the vibration isolation 14. The thermometer pocket is reduced in amount of bend, and a stress brought about at a fixed part of the thermometer pocket 10 is decreased to not larger than a stress breaking the fixed part of the thermometer pocket 10. The vibration isolation 14 can support the thermometer pocket 10 on a plane and therefore, a stress concentration at a contact part when the vibration isolation 14 comes in touch or collides with the thermometer pocket 10 is prevented. Moreover, a temperature rise at a cap 8 and a pressure-resisting part of a washer 9 can be restricted when the protecting tubes 11, 12, 13 are enhanced in rigidity and the thermometer pocket 10 is reduced in sectional area.

3. 发明专利

JPH09229300A HIGH-TEMPERATURE GAS PIPING SYSTEM 失效
公开(公告)号：JPH09229300A
公开(公告)日：1997-09-05
申请号：JP3202096
申请日：1996-02-20
申请人： HITACHI LTD
发明人： SADAOKA NORIYUKI , SHIDA YU , SUGAWARA YOSHIAKI , SUZUKI MASAKI , ISHII TOSHINORI , UMEGAKI KIKUO
IPC分类号： F01K23/10 , F02C7/00 , F17D1/04 , F22B37/00
摘要： PROBLEM TO BE SOLVED: To provide a high-temperature gas piping system provided with a path in which the temperatures of high-temperature gas are uniformed before flowing to a turbine even if the high-temperature gas drawn from two boilers have the temperature difference, and in which large vibration of the whole piping system is not generated. SOLUTION: In a high-temperature gas piping system for supplying high- temperature gas from two boilers to a turbine, respective pipes drawn from two boilers A, B are joined to one pipe and again branched into two pipes just before the turbine, and paths from which gas is allowed to flow to the turbine from two parts are provided.

4. 发明专利

JPH08218811A COOLING METHOD FOR STEAM TURBINE AND DEVICE THEREFOR 失效
公开(公告)号：JPH08218811A
公开(公告)日：1996-08-27
申请号：JP2785595
申请日：1995-02-16
申请人： HITACHI LTD
发明人： SHIDA YU , OKAYAMA MASAYOSHI , SUZUKI MASAKI
IPC分类号： F01D25/12 , F01K7/18 , F01K9/00 , F01K13/02
摘要： PURPOSE: To enlarge a temperature falling ratio of a steam turbine, improve cooling efficiency, and improve cooling efficiency of an upper half of a turbine metal of a high pressure steam turbine. CONSTITUTION: An air cooler 33 is arranged on an inlet side of a vacuum breaking valve 32, for cooling external air introduced into a condenser 4. An outlet/ inlet of a low temperature reheating steam pipe drain valve 28 is formed on a bypass pipe 39 provided with a bypass air cooler 36. Cooling air introduced to a steam exhaust part of a high pressure steam turbine 1 is cooled for increasing a temperature falling ratio of the steam turbine. A branch pipe 43 branched from a low temperature reheating pipe 8 is connected to a grand steam recovery pipe 46. Cooling air is introduced into the high pressure steam turbine 1 from a grand part 40 of the high pressure steam turbine l for improving cooling efficiency of an upper half of a turbine metal of the high pressure steam turbine.

5. 发明专利

JPH03208534A PLANE MACHINING TOOL 失效
公开(公告)号：JPH03208534A
公开(公告)日：1991-09-11
申请号：JP50490
申请日：1990-01-08
申请人： HITACHI LTD
发明人： HIRAOKA KOICHI , YANAGI KATSUMI , OISHI YASURO , SUZUKI MASAKI
IPC分类号： B23C5/16 , B23D3/00 , B23D7/00 , B23Q5/22
摘要： PURPOSE:To eliminate unevenness on a cutting surface in the order of magnitude of several mums irrespective of entry of an NC command value by embedding an electric heater in an end mill, allowing the end mill to prevent heat and expand with feeding of current, or otherwise to shrink with shutting-off of the current, and thereby moving the plane of the cutting surface up and down finely. CONSTITUTION:A hole is bored in the center of an end mill 4, and an electric heater 3 is incorporated in it. The end mill 4 can be expanded finely by supplying current to this electric heater 3 from an electric adjuster 2, or can be shrunk by shutting off the current, so that minute unevenness on the surface can be eliminated by controlling the amperage properly in plane machining which requires preciseness. That is, current is fed to the electric heater 3 to allow it to generated heat, and the end mill 4 is expanded, and thereafter the amperage to the end mill is lessened simultaneously with start of machining, and thereby the shrinkage of end mill is offset with expansion due to heat emission from the spindle, heat emission with machining, etc.. Thus a plane with high precision is achieved.

6. 发明专利

JPH01193698A CONDENSER WITH SEPARATE HOTWELL 失效
公开(公告)号：JPH01193698A
公开(公告)日：1989-08-03
申请号：JP1698088
申请日：1988-01-29
申请人： HITACHI LTD
发明人： IGARASHI YUJI , SUZUKI MASAKI
IPC分类号： G21D1/02
摘要： PURPOSE:To enable minimization of T/G support, simplification of an indoor layout, and piping and equipment related to a condenser, by placing a hotwell separately as a condensate tank and by connecting a condenser and the hotwell with a piping and a pump. CONSTITUTION:A condenser 1 is placed under a turbine 2 and a condensate ditch 9 is provided at the lowermost part of the condenser. The condensate tank 3 has a constitution being connected to the condensate ditch 9 by a piping 10 and a pump 11. A steam discharged from the turbine 2 heats up a feed water through a feed water heater 6, moves to a cooling pipe 7 and arrives at the bottom of the condenser 1 after being cooled down and condensed to water. The bottom surface of the condenser 1 is inclined for the condensate to flow into the ditch 9. The condensate stored in the ditch 9 is sucked to the condensate tank 3 by the pump 11 connected with the piping 10. A hotwell which store the condensate temporarily, is used as the condensate tank 3 separated from the condenser 1, and is connected to the condenser 1 by the pump 11. As the result, the condenser 1 can have a structure as lower as a height of the hotwell therefore a smaller sized T/G support can be applied.

7. 发明专利

JPS6199555A Scroll manufacture of scroll compressor 失效
标题翻译：滚动压缩机的滚动制造
公开(公告)号：JPS6199555A
公开(公告)日：1986-05-17
申请号：JP21833584
申请日：1984-10-19
申请人： Hitachi Ltd
发明人： SUZUKI MASAKI , MINAGAWA SADATOSHI , KATSUMATA KOSAKU , OOTA SHOJI , SATO MINORU
IPC分类号： C25D7/00 , B22D19/00 , F04C18/02
CPC分类号： F04C18/0246 , B22D19/00
摘要： PURPOSE:To permit easy working and to improve mass productivity and economic efficiency by forming the end plate part of a scroll of a casting and scroll lap parts of a spiral strip and molding integrally said parts by insert casting. CONSTITUTION:The scroll lap member 12 is formed to the spiral strip separately by plastic working or other forming method and is set in a casting mold after the member is subjected to copper plating, thin plating, etc. in order to strengthen the binding force of the casting. The one spiral side of the member 12 is positioned into a casting drag 10 via a shell mold 13 and the other side into the end plate casting space in a casting cope 11. The spiral grooves 13a of the shell mold 13 are for insertion of the member 12. The cope 11 is put on the drag 10 and a molten metal is poured through a sprue 15. The man-hour for finishing by machining is thus decreased and the strength of the scroll lap part 22 is improved.
摘要翻译：目的：通过形成螺旋带的铸件涡旋件和涡卷成型件的端板部件并通过嵌入铸造将所述部件一体成型，从而允许容易的加工和提高批量生产率和经济效率。构成：通过塑料加工或其他成型方法，将涡卷成型体12分别形成为螺旋状带，并且在成形体经受镀铜，薄板化等之后，将它们设置在铸模中，以增强其结合力铸造。构件12的一个螺旋侧通过壳模13定位成铸造阻力10，另一侧被定位在铸造底座11中的端板铸造空间中。壳模13的螺旋槽13a用于插入将上盖11放在拖把10上，并且熔融金属通过浇口15注入。因此，通过机加工精加工的工时减小，并且提高了滚动卷装部分22的强度。

8. 发明专利

JPS60251974A APPLICATION OF FILM TO PIPING 失效
公开(公告)号：JPS60251974A
公开(公告)日：1985-12-12
申请号：JP10840084
申请日：1984-05-30
申请人： HITACHI LTD
发明人： SUZUKI MASAKI , TANAKA TOSHIJI , YONEKAWA YASUMASA
IPC分类号： B05D7/14
摘要： PURPOSE:To make it possible to maintain the life of piping over a long period of time by suppressing the spreading and advance of corrosion, by forming projections to the inner or outer surface of the piping to which a film is applied. CONSTITUTION:The inner surface of a pipe is cut so that the shape of each projection is a quadrangular pyramid and triangular grooves can be formed in both spiral and pipe axial directions. The height of each projection is set to about 1.5mm. and the angle of each side surface of the quadrangular pyramid to 60 deg.. By this structure, even if a flaw is generated in a film, the flaw is stopped at the leading end of each projection while the liquid sump surrounded by the interface of the film and a metal can be formed as the flaw part is corroded and corrosion advances and an electrolyte is held at high concn. and, therefore, the advance of corrosion is reduced.

9. 发明专利

JPS59170514A Pipe coupler 失效
标题翻译：管接头
公开(公告)号：JPS59170514A
公开(公告)日：1984-09-26
申请号：JP4228183
申请日：1983-03-16
申请人： Hitachi Ltd
发明人： SUZUKI MASAKI , YONEKAWA YASUMASA
IPC分类号： F15D1/02 , F16L41/02 , F16L51/00
CPC分类号： F16L51/00
摘要： PURPOSE:To reduce a thermal stress in the pipes by a method wherein spaces through which each of fluids flows are arranged adjacent to a confluent portion of both fluids flows and heat-exchanged between both fluids in a pipe coupling for use in confluence of fluids having different temperatures such as that in a reactor cooling member purifying system. CONSTITUTION:A plate 54 having a plurality of slits 58 is arranged in a direction crossing a main pipe 52 at an upstream side of a branch pipe 56 in a main pipe 52. The plate 54 is also made integral with a partition plate 60 extending from the branch pipe 56 to the downstream side at a lateral width side of the slits 58, and at the same time a substantial half part of the branch part 56 of the main pipe 52 is made to be a double cylindrical form to make a buffer 62, and the buffer is arranged. Interior of the buffer 62 is communicated with a second space 70 in which fluid at the branch side flows through distribution slits 66 formed in a semi-circular shielding plate 64. The second space 70 is defined by said partition plate 60 in such a way as it may be alternately arranged with the first space 68 through which the main pipe fluid flows, and the flow regulator plates 72 and 74 are arranged horizontally in each of the spaces 68 and 70.
摘要翻译：目的：通过一种方法来减少管道中的热应力，其中每个流体流动的空间被布置在邻近两个流体的汇合部分的两个流体的两个流体之间并在两个流体之间进行热交换，用于在具有不同的温度，如反应堆冷却部件净化系统中的温度。构成：具有多个狭缝58的板54沿主管52的分支管56的上游侧与主管52相交的方向配置。板54也与分隔板60一体形成，分支管56在狭缝58的横向宽度侧的下游侧，同时将主管52的分支部分56的大部分半部分制成双圆柱形状以制成缓冲器62 ，并配置缓冲区。缓冲器62的内部与第二空间70连通，其中分支侧的流体流过形成在半圆形屏蔽板64中的分配狭缝66。第二空间70由所述分隔板60限定，其可以与主管道流体流过的第一空间68交替布置，并且流量调节板72和74在每个空间68和70中水平布置。

10. 发明专利

JPS5411401A ROTOR OF ROTARY ELECTRIC MCHINE 失效
公开(公告)号：JPS5411401A
公开(公告)日：1979-01-27
申请号：JP7649077
申请日：1977-06-29
申请人： HITACHI LTD , HITACHI SERVICE ENG
发明人： YAMAZAKI TOSHIO , ISHIDA ISAO , SUZUKI MASAKI
IPC分类号： H02K7/102 , H02K7/10
摘要： PURPOSE:To prevent loosening of a bolt or a nut used to clamp a brake ring; by welding a rotation-locking member to the brake ring wherein said rotation-locking member comprising a washer member having a bolt-hole and a rotation-locking pawl portion provided on one side surface of the washer.

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