公开(公告)号：JP2006324177A

公开(公告)日：2006-11-30

申请号：JP2005147842

申请日：2005-05-20

Applicant: TOSHIBA CORP ,  TOSHIBA IT & CONTROL SYS CORP

Inventor： SASAGE KOSUKE ,  OSABE KIYOSHI ,  KAMIKAWAJI TORU ,  SEKI KEISEI ,  MIYATA KIYOTAKA

IPC: H01H33/66

Abstract: PROBLEM TO BE SOLVED: To obtain a vacuum valve short in an axis direction with a conductive current capacity improved. SOLUTION: The vacuum valve is provided with a vacuum insulating vessel 1, fixed-side sealing metal fittings 2 sealed at either open face of the vacuum insulating vessel 1, a movable-side sealing metal fitting 3, a fixed-side conductive axis 4 fixed in penetration to the fixed-side sealing metal fittings 2, a fixed-side contact 5 fixed to an end of the fixed-side conductive axis 4, a movable-side conductive axis 7 penetrating through a center opening 3a of the movable-side sealing metal fitting 3, and movable-side contact 6 firmly fixed to an end of the movable-side conductive axis 7, a bellows 8 with its one end airtightly fixed to the center opening 3a and with the other end airtightly fixed to the movable-side conductive axis 7, a movable-side contact conductor 20 in sliding contact with a movable-side outer conductor 13 fitted at an end of the movable conductive axis 7 with a larger radius than the movable-side conductive axis 7, and a guide 21 inserted into the center opening 3a with its peripheral direction divided in plural. COPYRIGHT: (C)2007,JPO&INPIT

公开(公告)号：JP2002281620A

公开(公告)日：2002-09-27

申请号：JP2001083657

申请日：2001-03-22

Applicant: TOSHIBA CORP

Inventor： NISHIZUMI SHIGENORI ,  TOYODA TAKEO ,  KAMIKAWAJI TORU ,  HIOKI ISAO

IPC: H02B13/02 ,  H01H33/02 ,  H01H33/66 ,  H02B13/035 ,  H02B13/055

Abstract: PROBLEM TO BE SOLVED: To downsize the overall constitution by scaling down the space inside the device, and also to suppress use of global warming gas. SOLUTION: A metallic tank 9 being charged with insulating gas is provided with a divider which bifurcates in two directions, and conductors 10 and 5 are arranged within the bushings 11 and 4 connected to the ends of the leaders of this divider. A vacuum valve 1 is applied as a breaking part. This vacuum valve 1 is stored in one hand 11 of the bushings. The conductor 10 connects its one end side to the vacuum valve within the bushing 11, as a branching conductor having a fork branching off within the tank, and also connects its other end side to the conductor 5, within the bushing 4 on the side where the vacuum valve is not stored.

公开(公告)号：JPH07182954A

公开(公告)日：1995-07-21

申请号：JP32729493

申请日：1993-12-24

Applicant: TOSHIBA CORP

Inventor： SHIOIRI SATORU ,  KAMIKAWAJI TORU

IPC: H01H33/66

Abstract: PURPOSE:To provide a vacuum valve suppressing the electron emission from shields when the electric field is applied and having improved withstand voltage performance. CONSTITUTION:Both ends of an insulating container 1 are airtightly sealed with end plates 2, 3 to form a vacuum container. Fused layers 10, 9a, 9b are formed on the outer surface of an intermediate shield 8 surrounding a fixed electrode 4 and a moving electrode 5 separably provided in the vacuum container and on the outer surfaces of fixed shields 7a, 7b fitted to the end plates 2, 3 respectively.

公开(公告)号：JPH06349387A

公开(公告)日：1994-12-22

申请号：JP13374893

申请日：1993-06-04

Applicant: TOSHIBA CORP

Inventor： KAMIKAWAJI TORU

IPC: H01H11/04 ,  H01H1/02 ,  H01H33/66

Abstract: PURPOSE:To no provide a vacuum circuit breaker, which eliminates the effects of a very small protrusion or a fine particle formed on the surface of a contact point, and which can improve insulation performance, and to provide a manufacturing method thereof. CONSTITUTION:A very thin layer 13 is formed on the surface of the contact point 8 of a pair of electrodes in a vacuum container. An electron beam 12 of high energy density is applied on the surface of the contact point 8 continuously in finely vacillated way such that the beam is displaced bit by bit. The very thin layer 13 of desired thickness is formed by cutting an uneven part 14, and by radiating an electron beam 17 of low energy density to melt and remove a very small peeled part 15 or a fine particle 16.

公开(公告)号：JPH01272024A

公开(公告)日：1989-10-31

申请号：JP9831388

申请日：1988-04-22

Applicant: TOSHIBA CORP

Inventor： KAMIKAWAJI TORU

IPC: H01H33/66 ,  H01H33/664

Abstract: PURPOSE:To improve the interrupting performance by providing a metal spacer, partly coated with an inorganic insulating material, between the main electrode and the coil electrode and eliminating a leakage current flowing through the spacer and generating a sufficient longitudinal magnetic field. CONSTITUTION:A spacer 5 is formed by coating an inorganic insulating material 6 such as ceramics on the surface of a metal cylinder 5a made of stainless steel, etc. There are various coating methods, but the alumina ceramics coating by plasma jet melting method is most suitable from the viewpoint of manufacturing processes. To assemble a vacuum valve, silver soldering at a high ambient temperature of 800-900 deg.C is required, but as a plasma coated film has air holes, even if there is a large difference in thermal expansion coefficient the air holes absorb and relax the stress, so that the peeling of the film will never occur. Owing to the insulating performance of the spacer 5, the total interrupting current flows through the coil electrode 2 and a strong longitudinal magnetic field is applied between the electrodes to improve the interrupting performance and moreover an electrode structure with a high mechanical strength can be obtained.

公开(公告)号：JPS6337521A

公开(公告)日：1988-02-18

申请号：JP17920186

申请日：1986-07-30

Applicant: TOSHIBA CORP

Inventor： KAMIKAWAJI TORU

IPC: H01H1/62 ,  H01H33/66

公开(公告)号：JP2002334638A

公开(公告)日：2002-11-22

申请号：JP2001135753

申请日：2001-05-07

Applicant: TOSHIBA CORP

Inventor： KAMIKAWAJI TORU

IPC: H01H33/66

Abstract: PROBLEM TO BE SOLVED: To provide a vacuum valve of a type having an electric field act on an electrode which can improve breaking performance without curtailing current conducted. SOLUTION: A magnetic substance 19 is buried inside at least one electrode 18 of the pair of electrodes having a contact point 9. A part of the magnetic substance 19 is inserted and arranged at a hollow part formed at the end part of a movable shaft 20 bonded to the electrode 18. A spiral-shaped part 20b compartmentalized with slanted slits 20a independent from each other is formed at an outer periphery in the vicinity of the movable shaft 20 where the magnetic substance is located. With this, magnetic field ϕ in the direction of the shaft generated by current flowing the spiral-shaped part 20b is introduced toward the direction of the contact point 9 by the magnetic substance 19.

公开(公告)号：JPH08111149A

公开(公告)日：1996-04-30

申请号：JP24588694

申请日：1994-10-12

Applicant: TOSHIBA CORP

Inventor： SHIOIRI SATORU ,  KAMIKAWAJI TORU

IPC: H01H11/04 ,  H01H33/66

Abstract: PURPOSE: To prevent the deterioration of breaking performance and an insulating characteristic caused by microscopic projections formed on surfaces of contact points and particles or the like sticking to a surface. CONSTITUTION: A first processing chamber 12 and a second processing chamber 14 are arranged in an airtight vessel 15, and a vacuum pump 16 is connected to an outer wall of this airtight vessel 15. Among these, an electron beam emitting device 11 is housed in an upper part of the first processing chamber 12, and a carrier conveyor 17 leading to the second processing chamber 14 from the first processing chamber 12 is arranged. A heating device 13 is arranged in the second processing chamber 14. In the first processing chamber 12, a beam 11a emitted from the electron beam emitting device 11 is irradiated to contact points on surfaces of a movable electrode 6 brazed to a movable current-carrying shaft 7 and a fixed electrode 5 brazed to a fixed current- carrying shaft 5, and reforming of these contact points and elimination of a surface projection are performed.

公开(公告)号：JPH08111131A

公开(公告)日：1996-04-30

申请号：JP24282394

申请日：1994-10-06

Applicant: TOSHIBA CORP

Inventor： KAMIKAWAJI TORU ,  SHIOIRI SATORU

IPC: B23K15/00 ,  B23K26/21 ,  H01H11/04 ,  H01H11/06 ,  H01H33/66 ,  H01H33/664 ,  B23K26/00

Abstract: PURPOSE: To prevent deterioration of insulating properties and breaking performance of a vacuum valve due to a brazing filler flowing out of a brazed part of a contact point, etc. CONSTITUTION: A contact point 11 is mounted on the surface of an electrode 6, laser beam 13 is scanned from one side to the other side to heat the contact point 11 and the electrode 6 and to form a reformed layer 11a consisting of fine crystals on the surface side of the contact point 11 and at the same time form electrode fused part 15 on the surface side of the electrode 6, and then the back side of the contact point 11 is welded to the movable electrode 6. The output of the laser beam 13 may be raised periodically to form the electrode fused parts 15 and scanning speed may be lowered to form the electrode fused parts 15.

公开(公告)号：JPH0612945A

公开(公告)日：1994-01-21

申请号：JP16706892

申请日：1992-06-25

Applicant: TOSHIBA CORP

Inventor： KAMIKAWAJI TORU

IPC: H01H33/66

Abstract: PURPOSE:To provide a vacuum circuit breaker of improving reliability by reducing damage of a contact to eliminate decrease of dielectric strength performance and also suppressing the generation of restrike. CONSTITUTION:When assumed (d) for mean dielectric breakdown distance at maximum voltage applied across a pair of electrodes in a vacuum vessel and (f) for frequency of a rush current flowing at the time of closing the electrode, a mean closing speed in an inter-electrode clearance of (d) or less is set so as to obtain a relation where v=(20/11).f.d to (20/9).f.d. Thus, an optimum range of the closing speed of the electrode is specified.