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31. 发明专利

JP2003344230A System for introducing gas, and system for analyzing gas 审中-公开
标题翻译：用于气体分析的系统和用于分析气体的系统
公开(公告)号：JP2003344230A
公开(公告)日：2003-12-03
申请号：JP2002151236
申请日：2002-05-24
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： FUJITA HIROYUKI , IWASAKI TOSHIO
IPC分类号： G01N27/62 , G01N1/00 , G01N1/02 , G01N1/22 , G01N33/00 , H01J49/04
CPC分类号： G01N1/22 , G01N33/0016 , G01N2001/024
摘要： PROBLEM TO BE SOLVED: To make compatible quick analysis and high sensitivity for gas analysis in a gas analyzer.
SOLUTION: Vacuum valves 22, 24 are closed and a vacuum valve 30 is opened prior to start of the gas analysis to evacuate insides of an introducing pipe 14 and a branch pipe 26 by a vacuum pump 28, the vacuum valve 30 is closed and the vacuum valve 22 is opened to introduce analysis object gas generated from a load 16 into the introducing pipe 14 and to store it when the load 16 is mounted on a load receiver 18, the vacuum valve 24 is opened to deliver the analysis object gas in the inside of the pipe 14 to the gas analyzer 12 when pressure inside the introducing pipe 14 comes to pressure suitable for the analysis, and the gas analysis is carried out by as mass spectrometry apparatus 12.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：在气体分析仪中进行气体分析的兼容快速分析和高灵敏度。解决方案：真空阀22,24关闭，并且在气体分析开始之前打开真空阀30，以通过真空泵28抽空导管14和分支管26的内部，真空阀30是关闭，真空阀22打开以将从负载16产生的分析对象气体引入导入管14中，并且当负载16安装在负载接收器18上时将真空阀22存储，真空阀24打开以传送分析对象当导入管14内的压力达到适合分析的压力时，将管14内部的气体送入气体分析器12，气体分析通过质谱装置12进行。（C） 2004年，JPO

32. 发明专利

JPH11215029A INTERFACE, INTERFACE MOUNTING METHOD AND INTERFACE MOUNTING RACK THEREOF 失效
公开(公告)号：JPH11215029A
公开(公告)日：1999-08-06
申请号：JP2903198
申请日：1998-01-28
申请人： HITACHI LTD
发明人： MIYAZAKI NORIO , YAMAMOTO ERIKO , HAMAGUCHI NAOHISA , KOYAMA HIROKI , FUJITA HIROYUKI
IPC分类号： H03K19/003 , H04B1/74 , H04B3/04 , H04B10/03 , H04B10/032 , H04B10/035 , H04B10/07 , H04B10/29 , H04J3/00 , H04L1/22 , H04B10/02
摘要： PROBLEM TO BE SOLVED: To reduce the size of a device when both (1+1) and 1:N redundancy constitutions are applied with minimized deterioration of transmitting/receiving characteristics. SOLUTION: An electrical interface of a slow speed signal part 10 is divided into a substrate of a terminating circuit 102 and the substrates of working and standby logic circuits 103 and 104. The circuit 103 includes the circuit 104 in a 1:N redundancy constitution. Signals received via an electric transmission line 114 are once electrically terminated in both transmission and reception by an active element. Then the logical levels of those signals are determined and distributed to the working and standby systems. Signals selected at a slow speed selection part 106 are supplied to a fast speed optical circuit 115, via a separate multiplexing part 107 and a fast speed optical interface 108. If the part 10 has an optical interface, this interface consists of a single circuit substrate in a (1+1) redundancy constitution. The circuit substrate of the optical interface is also capable of being mounted on a slot, where the electrical interface is mounted. The part 106 can cope with both redundancy constitutions via the setting of a selection circuit.

33. 发明专利

JPH0935946A GAS INSULATED TRANSFORMER AND LEAD WIRE 失效
公开(公告)号：JPH0935946A
公开(公告)日：1997-02-07
申请号：JP17878795
申请日：1995-07-14
申请人： HITACHI LTD
发明人： SHIRANE TAKASHI , ENDO KAORU , IGA TAKASHI , HIRAISHI KIYOTO , FUJITA HIROYUKI
IPC分类号： H01F27/28
摘要： PROBLEM TO BE SOLVED: To provide a gas insulated transformer with a lead wire, insulating coating operation of which is facilitated even in an insulating coating layer constituted by lap-winding an embossed film a large number of times. SOLUTION: In a lead wire 4 for a gas insulated transformer led out from an insulating wiring in a tank, into which an insulating gas is sealed, and having an insulating coating layer on a surface, the insulating coating layer is constituted by winding an embossed or craped film in multilayers while the depth of the embossing working or craping working of the film of the insulating coating layer 3 placed on the side outer than the insulating coating layer 2 placed on the inside is formed largely.

34. 发明专利

JPH0917648A STATIONARY INDUCTION ELECTRIC DEVICE 失效
公开(公告)号：JPH0917648A
公开(公告)日：1997-01-17
申请号：JP16330095
申请日：1995-06-29
申请人： HITACHI LTD
发明人： IGA TAKASHI , SHIRANE TAKASHI , ENDO KAORU , FUJITA HIROYUKI , NAGAO YOSHIHIRO
IPC分类号： H01F27/32 , H01F27/10 , H01F27/20
摘要： PURPOSE: To enhance dielectric strength between the coils of a stationary induction electric device by improving the flow of a cooling medium in a wedge-form air gap in which the cooling medium is surrounded by a conductor being a hater to stay therein between the coils. CONSTITUTION: A ground horizontal insulating spacer 137 is used in which a groove 136 in nearly parallel to the circumferential direction of a disk coil is provided so that a fluid path which is adjacent to a wedge-form air gap surrounded by an adjacent conductor inside the disk coil and a horizontal insulating spacer 121 and is opened at both end surfaces of at least the horizontal insulating spacer 121 is formed.

35. 发明专利

JPH08166264A GAS FLOW DETECTING METHOD FOR TRANSFORMER 失效
公开(公告)号：JPH08166264A
公开(公告)日：1996-06-25
申请号：JP31021294
申请日：1994-12-14
申请人： HITACHI LTD
发明人： SAKAMOTO TAKESHI , HIRAISHI KIYOTO , FUJITA HIROYUKI
IPC分类号： G01F1/34 , H01F27/00 , H01F27/20 , H01F30/12
摘要： PURPOSE: To secure a gas circulating flow rate and cooling performance and to make a transformer small by measuring a pressure difference within a cooler so as to detect the existence of a gas flow rate and the flow rate itself flowing in a cooling pipe without inserting any structures into the cooling pipe of a gas insulated transformer. CONSTITUTION: In a transformer housing a tank 3 containing a main body such as a coil 1, an iron core 2, a cooler 6 and a blower 7 and a pipe 4 for connecting these, small pipes 8 and 8 for taking out pressure are provided in a flow-in pipe 4 to the cooler 6 and a flow-out pipe 4" from the cooler 6, each pressure is guided to the high and low pressure sides of different pressure transmitter 9 and an electric signal from the different pressure transmitter 9 is guided to a calculator 10.

36. 发明专利

JPH07307228A GAS INSULATED STATIONARY INDUCTION ELECTRIC MACHINE 失效
公开(公告)号：JPH07307228A
公开(公告)日：1995-11-21
申请号：JP9987794
申请日：1994-05-13
申请人： HITACHI LTD
发明人： IGA TAKASHI , ENDO KAORU , SHIRANE TAKASHI , HIRAISHI KIYOTO , FUJITA HIROYUKI
IPC分类号： H01F27/32 , H01F30/00
摘要： PURPOSE:To provide a small, light and large capacity gas insulated stationary induction electric machine whose insulation grade is equivalent to the grade F, which facilitates a winding process and, further, whose conductor insulating layers have the long-term high reliability of the mechanical strength and electrical strength. CONSTITUTION:A first insulating layer 7a which is made of a first plastic film having the grade F heat resistant property or higher and is wound on a winding conductor and a second insulating layer 7b which is made of a second plastic film having higher tearing strength and dielectric breakdown strength and, further, lower friction coefficient than the first plastic film and is wound on the outer circumference of the first insulating layer 7a are provided in layers to form a composite insulating layer which is the covering insulating layer of the winding conductor.

37. 发明专利

JPH07212381A SELF HEALING SWITCH 失效
公开(公告)号：JPH07212381A
公开(公告)日：1995-08-11
申请号：JP111294
申请日：1994-01-11
申请人： HITACHI LTD
发明人： TAKATORI MASAHIRO , ASHI MASAHIRO , FUJITA HIROYUKI
IPC分类号： H04J3/00 , H04J3/08 , H04Q11/04 , H04L12/42
摘要： PURPOSE:To switch various ring switch modes such as 2-Fiber BLSR, 4-Fiber BLSR, and UPSR only by exchanging the software. CONSTITUTION:Space-switches 7 and 8 are provided in front of and behind an addrop switch 6. One output of the adddrop switch and one output of the 2nd space switch are connected to the input stage of the selectable selector in a time slot unit. Thus, switching various ring switch modes is enabled by exchanging the software while supressing the switch scale as it is. Thus, changing from the ring switch to the linear switch and vice versa is available.

38. 发明专利

JPH07123582A PROTECTIVE UNIT FOR TRANSFORMER 失效
公开(公告)号：JPH07123582A
公开(公告)日：1995-05-12
申请号：JP26454393
申请日：1993-10-22
申请人： HITACHI LTD
发明人： MAMIYA TAIJI , INAGAKI KEIZO , FUJITA HIROYUKI , UENO YOSHITO
IPC分类号： H01F27/34 , H02H7/045
摘要： PURPOSE:To prevent erroneous function and malfunction by detecting the internal failure of a series transformer based on the differential current between a series winding and an exciting winding and the current of circulation winding or the differential current between the circulation winding and the regulation winding of a regulation transformer. CONSTITUTION:A first relay element 51 decides an internal failure based on the differential current between the series winding 31a and the exciting winding 32a of a series transformer 3. A second relay element 52 decides an internal failure based on the current of a pair of circulation windings 33a, 34a connected in reverse parallel in the series transformer 3 or the differential current between the circulation windings 33a, 34b and the regulation winding 41a of a regulation transformer 4. Internal failure of the series transformer 3 is detected by the first and second relay elements 51, 52. This constitution allows positive detection only of the internal failure of the transformer 3 with no influence of magnetic saturation of the core of the transformer 3 thus preventing erroneous function and malfunction.

39. 发明专利

JPH04130707A TIE TRANSFORMER 失效
公开(公告)号：JPH04130707A
公开(公告)日：1992-05-01
申请号：JP25230590
申请日：1990-09-21
申请人： HITACHI LTD
发明人： FUJITA HIROYUKI
IPC分类号： H01F29/04
摘要： PURPOSE:To enable an installation area to be reduced, by connecting in series a second excitation winding with a tap winding via a tap changeover switch, which are provided in an auxiliary transformer, and by connecting the foregoing series circuit in parallel with a pair of terminals, which is drawn out from a first excitation winding to the outside. CONSTITUTION:A tie transformer is provided with a series transformer 4 and an auxiliary transformer 5. The series transformer 4 comprises a series winding S and a first excitation winding E1a. The auxiliary transformer 5 comprises a shunt winding C, a second excitation winding E2a, and a tap winding Tap. By the shunt winding C, another system (u) and a neutral point O (a terminal point O1), which have respectively the different voltages from each other, are connected. Further, a pair of terminals e2a, e2b, which is drawn out from the second excitation winding E2a and the tap winding Tap to the outside, is connected in parallel with a pair of terminals e1a, e1b, which is drawn out form the first excitation winding E1a provided in the series transformer 4 to the outside. Thereby, the series transformer, which is in connection with one system, one to every system, in conventional examples, is made unnecessary. Therefore, an entire configuration can be made compact, and a tie transformer, which enables its installation area to be reduced, is obtained.

40. 发明专利

JPH03216095A SUBSCRIBER MULTIPLEX TRANSMISSION SYSTEM 失效
公开(公告)号：JPH03216095A
公开(公告)日：1991-09-24
申请号：JP1064590
申请日：1990-01-22
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： FUJITA HIROYUKI , ASANO KENJI
IPC分类号： H04M3/22 , H04Q1/30 , H04Q3/42
摘要： PURPOSE:To prevent the system from being fallen into control disable state due to a transmission error of each subscriber adaptor circuit by discriminating whether or not a same data is received for N times consecutively as a signaling (S signal) of a multi-frame format. CONSTITUTION:An S signal from an exchange 1 is converted into an optical signal at an E/O conversion circuit 4 via au interface circuit 2 in a central device CT and restored into an electric signal again at an O/E conversion circuit 8 in a remote equipment RT and given to an S signal discrimination circuit 7 and an S signal reproduction circuit 8 and when the S signal is received as a same data for N times consecutively, the data is transferred to a subscriber circuit 10. On the other hand, when the S signal as the same data for N times consecutively is not received, the data as the S signal is transferred to the subscriber circuit 10 as all '1s' to keep the preceding control state. Thus, even when a fault takes place in the transmission system, the stack state of the subscriber side is avoided.

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