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61. 发明专利

JP2003121312A FLUID SAMPLING CONTAINER AND FLUID SAMPLING METHOD 审中-公开
公开(公告)号：JP2003121312A
公开(公告)日：2003-04-23
申请号：JP2001320831
申请日：2001-10-18
申请人： MITSUBISHI ELECTRIC CORP
发明人： MAKINO YOSHIHIRO , TOMOMATSU TOYONORI
IPC分类号： G01N1/00 , G01N1/10 , G01N1/22
摘要： PROBLEM TO BE SOLVED: To provide a fluid sampling container and a fluid sampling method capable of analyzing the atmospheric components. SOLUTION: The fluid sampling container comprises a container body 1 having a second opening 11b for sampling a fluid being tested such as electric insulation oil, and a first opening 11a for sampling a fluid component such as a dissolved gas, contained in the fluid being tested. The first and second openings are provided, respectively, with first and second self-recovering seal members 2a and 2b which can reseal the openings after a thin tube 6 or 7 for transporting fluid is drawn out, first and second pressing members 3a and 3b for enhancing airtightness by pressing the first and second seal members, respectively, and a wrench 54 for varying the pressing force of the first pressing member 3a. A fluid sampling method employing that container is also provided.

62. 发明专利

JP2002168854A DEVICE AND METHOD FOR MEASURING QUANTITY OF GAS DISSOLVED IN LIQUID 失效
公开(公告)号：JP2002168854A
公开(公告)日：2002-06-14
申请号：JP2000369414
申请日：2000-12-05
申请人： MITSUBISHI ELECTRIC CORP
发明人： MAKINO YOSHIHIRO , NANBA SADAO
IPC分类号： G01N33/28
摘要： PROBLEM TO BE SOLVED: To provide a device and a method for measuring the quantity of gas dissolved in a liquid capable of calibrating the content volume of a vacuum container in use regardless of the shape of the vacuum container. SOLUTION: The vacuum container 2 for performing gas dissolution equilibrium on a predetermined quantity of liquid to be measured S is provided with a gas chamber 5 for supplying a known quantity of gas for the vacuum container 2. A state of gas dissolution equilibrium is brought about between the predetermined quantity of liquid to be measured S and the known quantity of gas, and it is possible to correctly calibrate the content volume of the vacuum container 2 from the degree of vacuum of a gaseous phase in the vacuum container 2 in the state of gas dissolution equilibrium, the known quantity of gas, etc. In addition, through the use of the vacuum container 2 with the calibrated content volume, it is possible to measure the quantity of dissolved gas by a gas dissolution equilibrium method on the liquid to be measured S of which the quantity of dissolved gas is unknown.

63. 发明专利

JP2002005975A STREAMING ELECTRIFICATION DEGREE MEASUREMENT DEVICE 失效
公开(公告)号：JP2002005975A
公开(公告)日：2002-01-09
申请号：JP2000185522
申请日：2000-06-21
申请人： MITSUBISHI ELECTRIC CORP
发明人： KITABAYASHI HIROYOSHI , MAKINO YOSHIHIRO , TSUJI TAKAMASA
IPC分类号： G01R29/24 , G01N27/60 , H01F41/00
摘要： PROBLEM TO BE SOLVED: To provide a streaming electrification degree measurement device for accurately measuring a streaming electrification degree. SOLUTION: By measuring an electric charge amount of an insulative liquid 13 discharged from a liquid reservoir 12 and passed through an electric charge generating part 21, the streaming electrification degree is measured in the streaming electrification degree measurement device. The liquid reservoir 12 is air-tightly sealed and can discharge the insulative liquid 13 at a fixed flow rate.

64. 发明专利

JPH11354333A INSIDE ABNORMALITY DIAGNOSTIC METHOD FOR GAS INSULATED ELECTRIC DEVICE 失效
公开(公告)号：JPH11354333A
公开(公告)日：1999-12-24
申请号：JP15974498
申请日：1998-06-08
申请人： MITSUBISHI ELECTRIC CORP
发明人： MAKINO YOSHIHIRO , HARA TAKASHI , KANAMARU FUKUO
IPC分类号： H01F27/20
摘要： PROBLEM TO BE SOLVED: To make it possible to perform early detection of inner abnormality, by analizing the hydrocarbon-based gas in the insulation gas filled inside a gas insulated electric device. SOLUTION: In a gas insulated transformer using sulfer hexafluoride (SF6 ) gas for insulating gas, the insulation gas is picked up from a gas-insulated transformer in operation, and the hydrocarbon-based gas contained in the insulation gas is analyzed by gas chromatography. That is to say, when the abnormality such as discharge and overheat occurs in the gas-insulated transformer, the abnormal part becomes high in temperature. Therefore, the insulation material in the vicinity is broken down, and the gas, which is CH4 , C2 H4 , C3 H6 , C3 H8 , CO and CO2 , is remarkably generated. Since this gas is chemically stable, the gas is stored in the lapse of time even if the generated quantity is minute, and the detectable concentration is obtained after some time. Therefore, the quantity of each component is measured by component analysis, and the inner abnormality is securely detected.

65. 发明专利

JPH10311825A SF6 GAS ANALYZING METHOD AND SF6 GAS ANALYZER 失效
公开(公告)号：JPH10311825A
公开(公告)日：1998-11-24
申请号：JP12093997
申请日：1997-05-12
申请人： MITSUBISHI ELECTRIC CORP
发明人： MAKINO YOSHIHIRO , NANBA SADAO
IPC分类号： G01N30/20 , G01N30/88
摘要： PROBLEM TO BE SOLVED: To precisely analyze SF6 gas by collecting a required quantity of SF6 gas within a dried sample loop, and transferring it to a gas chromatograph by a carrier gas. SOLUTION: A 3-way cock 32 and a 6-way cock 21 are switched to carry and discharge a carrier gas to piping 29 through a drier 31 - a piping 33 - the 3-way cock 32 - inlet and outlet 22f-22c - a sample loop 20 - a piping 28. Since a purge gas is dehumidified and heated by the dryer 31 and a heater 35 during this, the sample loop 20 is dried. The 3-way cock 32 is then switched to carry SF6 gas within a collected gas storing vessel 18 to the same passage as the purge gas through the 3-way cock 32, and a valve 37 is closed to collect a required quantity of SF6 gas within the sample loop 20. Then, the 6-way cock 21 is switched to carry the carrier gas from a piping 25 to the sample loop 20 through the piping 28, and SF6 gas is extruded to a piping 27 and introduced to a gas chromatograph 19 through a piping 26. Thus, SF6 gas can be precisely analyzed without being influenced by moisture.

66. 发明专利

JPH09304250A CONTAINER FOR SAMPLE OF INSULATING OIL 失效
公开(公告)号：JPH09304250A
公开(公告)日：1997-11-28
申请号：JP11903196
申请日：1996-05-14
申请人： MITSUBISHI ELECTRIC CORP
发明人： MAKINO YOSHIHIRO , NANBA SADAO , TOHATA KAZUYA , HARA TAKASHI
IPC分类号： G01N1/10
摘要： PROBLEM TO BE SOLVED: To prevent sampled insulating oil from being altered with time by providing an anti-reaction layer with the insulating oil on an inner face of a container and providing a tube for injecting the insulating oil and a tube including a valve for permitting the oil more than an allowable volume to over flow. SOLUTION: A sample container 1 comprises a container body 1a including a flange, a container lid 1b, a seal member 1c and a fastening means 1d such as a bolt. The container lid 1b includes tubes 2a, 2b for injecting insulating oil 5, a valve 2c, tubes 3a, 3b for permitting inert gas for suppressing reaction and the insulating oil more than an allowable volume to overflow and a valve 3c, which are attached to the container lid 1b. A coating 4 such as fluorine-based resin is provided on a contact face of the container body 1a, the container lid 1b and the tubes 2a, 2b, 3a, 3b with the insulating oil. A space 6 of the container 1 is filled with nitrogen being inert gas. The container 1 is designed to be heated to a predetermined temperature by using a tin-plated steel material or the like while receiving the insulating oil. At the time of sampling the insulating oil, care should be taken so that the oil may not be exposed to air or light.

67. 发明专利

JPH05144645A GAS SENSOR AND MOUNTING METHOD FOR THE GAS SENSOR 失效
公开(公告)号：JPH05144645A
公开(公告)日：1993-06-11
申请号：JP30499191
申请日：1991-11-20
申请人： MITSUBISHI ELECTRIC CORP
发明人： MAKINO YOSHIHIRO
IPC分类号： G01N27/04 , H01F27/00
摘要： PURPOSE:To facilitate the mounting of a gas sensor to a gas insulating electric equipment by a method wherein after one part of a circulating piping is blocked, a flow path member in the blocked section is detached and after a flange container with flanges attached to both ends of the flange container is mounted instead of the member, the air in the interior of the flange container is exhausted and after that, an insulating medium in the interior of the gas insulating electric equipment is introduced in the flange container. CONSTITUTION:One of circulating pipings, wherein an insulating cooling medium 2 is made to circulate, is chosen, valves 8b and 8c are closed, a piping 4 between flanges 9e and 9h is detached and thereafter, a flange type container 6 and the piping 4 are respectively connected to a cooler 15 and a gas-insulated electrical equipment 1 using the flange 9e, flanges 9a, 9b, 9f and 9g and the flange 9h. Then, after the interior of the cooler 15 and the interior of the container 6 are evacuated to a vacuum state through a valve 8a, the valve 8a is closed and the valves 8b and 8c are opened. Thereby, a gas sensor can be easily mounted to the electrical equipment 1 during work without stopping a current conduction to the electrical equipment 1.

68. 发明专利

JPH0476418B2 失效
公开(公告)号：JPH0476418B2
公开(公告)日：1992-12-03
申请号：JP8496185
申请日：1985-04-19
申请人： MITSUBISHI ELECTRIC CORP
发明人： MAKINO YOSHIHIRO , FUKUYAMA NOBUFUSA
IPC分类号： G01F17/00

69. 发明专利

JPH0465349B2 失效
公开(公告)号：JPH0465349B2
公开(公告)日：1992-10-19
申请号：JP12746083
申请日：1983-07-11
申请人： MITSUBISHI ELECTRIC CORP
发明人： MAKINO YOSHIHIRO
IPC分类号： H02B13/055 , G01R31/00 , G01R31/12

70. 发明专利

JPH0361130B2 失效
公开(公告)号：JPH0361130B2
公开(公告)日：1991-09-18
申请号：JP20309282
申请日：1982-11-17
申请人： MITSUBISHI ELECTRIC CORP
发明人： MAKINO YOSHIHIRO
IPC分类号： G01F17/00 , G01F22/02

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