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1. 发明专利

JPH10149924A STATIONARY INDUCTION ELECTRIC APPARATUS 失效
公开(公告)号：JPH10149924A
公开(公告)日：1998-06-02
申请号：JP30937996
申请日：1996-11-20
申请人： HITACHI LTD
发明人： OBATA TOSHIMITSU , IGA TAKASHI
IPC分类号： H01F27/20
摘要： PROBLEM TO BE SOLVED: To provide a stationary induction electric apparatus in which a small gap is provided between an inner wall of a tank and an electrical machine main body, and the pressure is rapidly relaxed even when an abrupt pressure buildup is caused by an internal accident, so that breaking, distortion and leak of liquid of the tank is prevented. SOLUTION: A stationary introduction electric apparatus is provided with a tank 3 charged with cooling insulating medium, an electric machine main body 15 which is housed in the tank while submerged and placed in the cooling insulating medium, and pressure-avoiding chambers which are placed in spaces in the tank for relaxing abnormal pressure buildup in the tank. In the apparatus, the pressure-release chambers 7 (7a, 7b, 7c and 7d) are provided at both upper parts and lower parts of the tank 3.

2. 发明专利

JPH1022135A COOLING SYSTEM FOR STATIONARY INDUCTION APPARATUS 失效
公开(公告)号：JPH1022135A
公开(公告)日：1998-01-23
申请号：JP17631196
申请日：1996-07-05
申请人： HITACHI LTD
发明人： IGA TAKASHI , ENDO KAORU , SHIRANE TAKASHI , FUJITA HIROYUKI , HIRAISHI KIYOTO
IPC分类号： H01F27/08
摘要： PROBLEM TO BE SOLVED: To provide a cooling system for stationary induction apparatus which can suppress heat dissipation into a room even when a stationary induction apparatus is operated in an overloaded state or immediately after the apparatus is stopped and can prolong the operating time of the apparatus in the overloaded state. SOLUTION: A cooling system is constituted of a stationary induction apparatus 3 installed in the equipment chamber of an underground or indoor substation, a first coolant which fills up the main body tank of the apparatus 3 and directly cools the winding and iron core of the apparatus 3, a heat exchanger 6 which cools the first coolant with a second coolant, and a heat dissipation means which dissipates the heat of the second coolant to the outside of the equipment room. To the cooling system, a heat insulating cover 15 which covers at least part of the tank 2 of the apparatus 3, an air blower 12 which makes the cold air in the equipment chamber in which the apparatus 3 is installed to flow through the space between the cover 15 and tank 2, and an air duct 17 which introduces the cold air passed through the space between the cover 15 and tank 2 to the outside of the equipment room without discharging the cold air into the room.

3. 发明专利

JPH0917649A STATIONARY INDUCTION ELECTRIC DEVICE 失效
公开(公告)号：JPH0917649A
公开(公告)日：1997-01-17
申请号：JP16175295
申请日：1995-06-28
申请人： HITACHI LTD , TEIJIN LTD
发明人： ENDO KAORU , IGA TAKASHI , SHIRANE TAKASHI , HIRAISHI KIYOTO , FUJITA HIROYUKI , UMENE IWAO , UCHIDA SHUNICHI , TOMITA HIROSHI , SAITO KAZUYOSHI , NODA HIROSHI
IPC分类号： B01J20/18 , H01F27/14 , H01F30/12
摘要： PURPOSE: To provide a stationary induction electric device having high reliability by making it feasible to operate the device at a higher temperature than the operating temperature of a transformer limited by the heat-resisting characteristic of an insulating material. CONSTITUTION: An adsorbent 9 is disposed in the upper part and the lower part of the inside of a tank so as to spread it, and a gap is circulated through a cooler 5 in order to cool a structure such as an iron core of making a heater, windings 2, 3 and fastening tools 10, 11 thereby making the operating temperature of a stationary induction electric device rise, and when an insulating material is exposed to a high temperature to generate a cracked gas, it is adsorbed by the adsorbent 9 and the deterioration of a polyester film and the insulating material by itself due to the cracked gas is prevented.

4. 发明专利

JPH08102279A MICROWAVE PLASMA GENERATING DEVICE 失效
公开(公告)号：JPH08102279A
公开(公告)日：1996-04-16
申请号：JP23737894
申请日：1994-09-30
申请人： HITACHI LTD
发明人： ICHIMURA SATOSHI , SATO TADASHI , IGA TAKASHI , NATSUI KENICHI
IPC分类号： H01J27/18 , H01J37/08 , H01J37/32
摘要： PURPOSE: To eliminate the trouble with enlargement of a device by downsizing a permanent magnet. CONSTITUTION: A permanent magnet 3 forms a magnetic field at a dimension exceeding the electron cyclotron resonance magnetic field at a microwave lead- out part 6a of a dielectric 6 in an electron heating space chamber 1, and forms the magnetic field at 0 at a point 14 near the boundary between the electron heating space chamber 1 and a plasma generating space chamber 2. Distribution of intensity of magnetic field by the permanent magnet 3 is thereby quickly damped, and almost microwave can be absorbed by electron so as to heat the electron at positions 12a-12c of an electron cyclotron resonance layer 12, and as a result, the high energy electron can be obtained.

5. 发明专利

JP2000260633A WINDING OF STATIONARY INDUCTION APPARATUS 失效
公开(公告)号：JP2000260633A
公开(公告)日：2000-09-22
申请号：JP6270699
申请日：1999-03-10
申请人： HITACHI LTD
发明人： FURUKAWA SADAO , KOJIMA KEIMEI , MIYAO HIROSHI , IGA TAKASHI
IPC分类号： H01F27/28 , H01F27/32 , H01F30/00
摘要： PROBLEM TO BE SOLVED: To improve a cooling performance and reduce the number of manufacturing steps while not involving a reduction in an insulation strength to disconnector surge. SOLUTION: With respect to a coil 3 of a winding 8 of a stationary induction apparatus corresponding to several turns from a high voltage terminal 9 at a center of the winding, when the coil 3 is wound together with an insulator 10 disposed at its both sides, an improved cooling performance and the reduced number of manufacturing steps can be realized without reducing an insulation strength to disconnector surge. That is, the improved cooling performance and the reduced number of manufacturing steps can be realized without reducing the insulation strength to disconnector surge between the wires of the inductor apparatus winding 8.

6. 发明专利

JPH11317315A NONCOMBUSTIBLE REACTOR 失效
公开(公告)号：JPH11317315A
公开(公告)日：1999-11-16
申请号：JP12238198
申请日：1998-05-01
申请人： HITACHI LTD
发明人： IGA TAKASHI , UMENE ITSUKI
IPC分类号： H01F27/33 , H01F37/00
摘要： PROBLEM TO BE SOLVED: To allow an iron core type reactor with a gap to be given adequate strength with respect to vibration. SOLUTION: An upper supporting hardware 12b and a metallic bottom plate are respectively mounted on the upper part and bottom part of an inside container 12, so that the junction can be airtight mounted without using any fastening means such as an insulating bolt in a conventional manner. Consequently, the sealability between the inside container 12 and the upper and lower members can be made higher than that in a conventional technique for forming the inside container of FRP. Thus, even when vibration is made large at the time of adopting an iron core reactor with a gap, sealability resistant to long-term use can be obtained.

7. 发明专利

JPH11154615A GAS INSULATING TRANSFORMER 失效
公开(公告)号：JPH11154615A
公开(公告)日：1999-06-08
申请号：JP31991597
申请日：1997-11-20
申请人： HITACHI LTD
发明人： IGA TAKASHI
IPC分类号： H01F27/28 , H01F27/20 , H01F27/32 , H01F30/00
摘要： PROBLEM TO BE SOLVED: To provide a gas insulating transformer in excellent productivity without losing mechanical strength and the dielectric strength as insulating spacers, while reducing an excessive concentration of electric field on spacer parts. SOLUTION: In a gas insulating transformer composed of a plurality of low potential windings 2 and high potential windings 3 concentrically arranged with an iron core as well as a plurality of insulating cylinders 10A, 10B also concentrically arranged with the iron core between mutual windings 2, 3 besides, a plurality of insulating spacers 4 arranged between these insulating cylinders, at least one insulating spaces 4 is composed of a plurality of laminated bodies of insulating sheets while inside the laminated bodies 430, cavities 4B are formed between respective insulating sheets adjacent in the radius direction of the windings.

8. 发明专利

JPH0945551A GAS INSULATED STATIONARY INDUCTION APPARATUS 失效
公开(公告)号：JPH0945551A
公开(公告)日：1997-02-14
申请号：JP19727895
申请日：1995-08-02
申请人： HITACHI LTD
发明人： IGA TAKASHI , ENDO KAORU , SHIRANE TAKASHI , NAGAO YOSHIHIRO
IPC分类号： H01F27/28 , H01F27/20 , H01F27/32 , H01F30/12
摘要： PROBLEM TO BE SOLVED: To provide a large-capacitance gas insulated stationary induction apparatus which is inexpensive and excellent in long-term reliability of mechanical and electrical strength of an insulating cover layer of a winding. SOLUTION: An insulating cover layer of a winding 3 having its upper and lower parts connected to a neutral point with a high-voltage line led out from the center thereof is divided into three parts, which are covered with three types of plastic films having different characteristics. An upper part 3a is covered with a film having heat resistance property of insulation type not lower than type F and higher than heat resistance properties of the other films. A center part 3b is covered with a film having a dielectric breakdown field higher than those of the other films and heat resistance property higher than that of the film covering a lower part 3c.

9. 发明专利

JPH08203743A GAS-INSULATED TRANSFORMER 失效
公开(公告)号：JPH08203743A
公开(公告)日：1996-08-09
申请号：JP1036195
申请日：1995-01-26
申请人： HITACHI LTD
发明人： SHIRANE TAKASHI , ENDO KAORU , IGA TAKASHI , HIRAISHI KIYOTO , FUJITA HIROYUKI
IPC分类号： H01F27/08 , H01F27/20 , H01F30/00
摘要： PURPOSE: To enable use of a lead wire lead-out pipe for a lead wire led out from winding in a tank as a part of a cooling circulation path, reduction in an occupied space for a dedicated gas cooling pipe, and reduction in the number of parts for the gas cooling pipe. CONSTITUTION: A high-pressure lead wire 5 led to the upper side of a tank 1 passes through a lead-out pipe 6 and is connected to a high-pressure gas bus via a spacer. The high-pressure lead wire 5 is supported by a spacer 19. An upper space within the tank 1 is interlinked with a space of the lead-out pipe 6. A low-pressure lead wire 9 passes through a lower lead-out pipe 10 and is connected to a low-pressure gas bus via a spacer. The low-pressure lead wire 9 is supported by a spacer 11. The upper space within the tank 1 is interlinked with the space of the lead-out pipe 6. A cooler 15 and a gas blower 16 are located between the lead-out pipe 6 and the lead-out pipe 10.

10. 发明专利

JPH06302549A ION MILLING DEVICE 失效
公开(公告)号：JPH06302549A
公开(公告)日：1994-10-28
申请号：JP8749193
申请日：1993-04-14
申请人： HITACHI LTD
发明人： ONO YASUNORI , IGA TAKASHI , SAKUMICHI KUNIYUKI , ASHIDA EIJI , YAMAZAKI HIDEKI , OISHI SEITARO , HASHIMOTO ISAO
IPC分类号： H01L21/302 , H01L21/3065
摘要： PURPOSE:To provide an ion milling device which can apply an ion beam stably for a long period. CONSTITUTION:The titled device is provided with a plasma generation chamber 1 to generate plasma through microwave discharge by a first magnetic means 2, a plasma expansion chamber 10 having a second magnetic means 5 to furthermore expand the plasma area, and an ion lead-out electrode 15. An adhesion preventive plate 30 for reducing the adhesion of sputter particles from a substrate 19 onto a microwave transmission window 6 is arranged in a space where the magnetic flux density is smaller than the one resonant with electron cyclotron. Thus the adhesion of thin film to a microwave introduction part can be suppressed to a great extent, resulting in a stable and long operation.

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