公开(公告)号：JPH10247444A

公开(公告)日：1998-09-14

申请号：JP4895597

申请日：1997-03-04

Applicant: TOSHIBA CORP

Inventor： YOSHIDA TETSUO ,  SHIOIRI SATORU ,  GO TOMIO

IPC: H02B13/02 ,  H01H33/66

Abstract: PROBLEM TO BE SOLVED: To downsize a gas insulation vacuum circuit breaker by enhancing withstand voltage without enlarging the radius of curvature of an electric field relaxation electrode. SOLUTION: In a gas insulation vacuum circuit breaker in which insulation gas is filled and which is provided with a vacuum valve equipped with an insulation vessel and electric field relieving electrodes the end portions of which are arranged at both ends of the insulation vessel apart by gas gap G, a quasi- uniform electric field is set to have 0.35 or more of utilization factor U which is obtained by the equation U=R/ 0.9(R+G)} based on the radius of curvature R of an electric field relieving electrode 16a outer peripheral face and the gas gap G, and a coating 23a made of insulation material is formed on one half or more of the outer peripheral face except a part opposite to the insulation vessel 13 on the electric field relaxation electrode 16a.

公开(公告)号：JPH09245589A

公开(公告)日：1997-09-19

申请号：JP4435096

申请日：1996-03-01

Applicant: TOSHIBA CORP

Inventor： SHIOIRI SATORU

IPC: H01H33/66

Abstract: PROBLEM TO BE SOLVED: To increas breakdown voltage against impulse voltage and perform miniaturization, by forming a metal coating of high electric breakdown voltage in the periphery of an electrode, in a vacuum valve provided with an arc shield between the electrode and an insulating cylinder. SOLUTION: A coating film 11A of tungten is formed in the pariphery of an upper/lower coil electrode 10, a thin reformed layer 13 is formed in an internal surface of an insulating cylinder 1. The electrode 10 coated with tungsten displays a breakdown impulse voltage characteristic about 1.9 times as compared with a copper base electrode, a creeping breakdown voltage characteristic of the layer 13 displays a characteristic of about 1.4 times as compared with in the past. Here, impurity gas in the vicinity of a solid surface of ceramic is fused to be removed by an ion beam, also crystal organization of ceramic is fined. Consequently, even when an electron emitted from a shield 12 collides against the internal surface of the cylinder 1, impurity gas is prevented from being emitted, so to make tracking difficult to extend in the internal surface of the cylinder 1, creeping insulation performance is improved.

公开(公告)号：JPH01206832A

公开(公告)日：1989-08-21

申请号：JP2877188

申请日：1988-02-12

Applicant: TOSHIBA CORP

Inventor： SHIOIRI SATORU ,  INOUE TAMOTSU ,  OKUBO HITOSHI

IPC: H01L39/16 ,  H01L39/04 ,  H02H9/02

Abstract: PURPOSE:To improve insulating properties, and to enhance reliability by directly coupling a vessel housing an absorbent such as porous activated carbon with a vacuum vessel and cooling the vessel by liquid nitrogen. CONSTITUTION:A superconductive element 4 is housed into a vessel 6 for liquid nitrogen 5 and cooled, and the vessel 6 is further stored into a vacuum vessel 7 through a vacuum layer. The vacuum vessel 7 is connected to a vessel 10 being installed through a valve 9 and housing an absorbent 10a such as porous activated carbon, and the adsorbent 10a is stored into a liquid nitrogen vessel 11 mounted outside the vessel 10, and cooled at a temperature of approximately the boiling point of liquid nitrogen. Accordingly, even when a gas absorbed to the metallic surface of the vacuum vessel 7, etc., and the surface of an insulator is discharged into the vacuum vessel 7, the gas is absorbed physically to the absorbent 10a, thus maintaining the inside of the vacuum vessel 7 under the state of a high vacuum.

公开(公告)号：JPS6277806A

公开(公告)日：1987-04-10

申请号：JP21664485

申请日：1985-09-30

Applicant: TOSHIBA CORP

Inventor： SHIOIRI SATORU

IPC: H02B13/02 ,  H01H33/66

公开(公告)号：JP2013008579A

公开(公告)日：2013-01-10

申请号：JP2011140867

申请日：2011-06-24

Applicant: Toshiba Corp ,  株式会社東芝

Inventor： ASARI NAOKI ,  SASAKI HARUKA ,  SHIOIRI SATORU ,  SOMEI HIROMICHI ,  TAKEI YOSHIHIRO ,  OTAKE SHIRO

IPC: H01H33/664 ,  H01H33/662

Abstract: PROBLEM TO BE SOLVED: To preserve micronization of arc-proof components, starting from manufacturing of a contact, until completion of assembly of a vacuum valve and to achieve enhancement of voltage resistance characteristics.SOLUTION: A vacuum valve has a pair of contacts 5 and 6 that is freely brought into contact with each other and separated from each other. The pair of contacts 5 and 6 is constituted of: base material layers 5a and 6a formed by mixing predetermined quantities of conductive components and arc-proof components; first fine layers 5b and 6b that have first micronized arc-proof components micronized by energy irradiating the arc-proof components while being formed on surfaces of the base material layers 5a and 6a; and second fine layers 5c and 6c that have second micronized arc-proof components micronized by executing current conditioning treatment of the first micronized arc-proof components while being formed at random on surfaces of the first fine layers 5b and 6b.

Abstract translation: 要解决的问题：为了保持防弧部件的微粉化，从接触制造开始直到完成真空阀的组装并且实现耐电压特性的提高。 解决方案：真空阀具有一对可自由地彼此接触并彼此分离的触点5和6。 一对触点5和6由以下部分组成：通过混合预定量的导电部件和防弧部件而形成的基材层5a和6a; 第一微细薄层5b和6b，其具有通过在基材层5a和6a的表面上形成的能量照射电弧组件而微粉化的第一微粉化防弧元件; 以及通过在第一微细化层5b和6b的表面上随机形成第一微粉化电弧组件的电流调节处理，使具有第二微粉化防弧组件微粉化的第二微细层5c和6c。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2011048998A

公开(公告)日：2011-03-10

申请号：JP2009195817

申请日：2009-08-26

Applicant: Toshiba Corp ,  株式会社東芝

Inventor： SATO JUNICHI ,  SHIOIRI SATORU ,  SAKAGUCHI OSAMU ,  TAGAYA OSAMU

IPC: H01H33/66

Abstract: PROBLEM TO BE SOLVED: To increase the adhesion force of an electric field relaxing shield to relax the electric field at a leading end. SOLUTION: A valve includes a fixing-side sealing fitting 2 and a movable-side sealing fitting 3 sealed to both end openings of a vacuum insulating container 1; a fixing-side contact 5 and a movable-side contact 6, which are contained in the vacuum insulating container 1 and freely brought into contact/out of contact with each other; a fixing-side electric field relaxing shield 20 provided to cover an outer peripheral end of the fixing-side sealing fitting 2; a movable-side electric field relaxing shield 21 provided to cover an outer peripheral end of the movable-side sealing fitting 3; and an insulating layer 12 formed on their outer peripheries. The electric field relaxing shields 20, 21 are respectively constituted of radially expanding radial direction parts 20a, 21a, axially extending axial direction parts 20b, 21b, and leading ends 20c, 21c. The surface roughnesses of the leading ends 20c, 21c are made finer than those of the radial direction parts 20a, 21a and the axial direction parts 20b, 21b. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：为了增加电场缓和屏蔽层的粘附力以使前端的电场松弛。 解决方案：阀包括密封到真空绝热容器1的两个端部开口的固定侧密封配件2和可动侧密封配件3; 固定侧触点5和可动侧触点6，其被容纳在真空绝热容器1中并自由地彼此接触/脱离接触; 设置成覆盖固定侧密封配件2的外周端的固定侧电场缓和护罩20; 设置成覆盖可动侧密封配件3的外周端部的可动侧电场缓和护罩21; 以及形成在其外周的绝缘层12。 电场缓和护罩20,21分别由径向扩张径向部分20a，21a，轴向延伸的轴向部分20b，21b和前端20c，21c构成。 前端20c，21c的表面粗糙度比径向部分20a，21a和轴向部分20b，21b的表面粗糙度更细。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2011048997A

公开(公告)日：2011-03-10

申请号：JP2009195816

申请日：2009-08-26

Applicant: Toshiba Corp ,  株式会社東芝

Inventor： SATO JUNICHI ,  SHIOIRI SATORU ,  SAKAGUCHI OSAMU ,  TAGAYA OSAMU

IPC: H01H33/66

Abstract: PROBLEM TO BE SOLVED: To disperse stress inside an insulating layer formed between an electric field relaxing shield and a vacuum insulating container to suppress generation of insulating defects. SOLUTION: A valve includes a fixing-side sealing fitting 2 and a movable-side sealing fitting 3 sealed to both end openings in the vacuum insulating container 1; a fixing-side contact 5 and a movable-side contact 6, which are contained in the vacuum insulating container 1 and freely brought into contact/out of contact with each other; a fixing-side electric field relaxing shield 20, provided to cover an outer peripheral end of the fixing-side sealing fitting 2; a movable-side electric field relaxing shield 21 provided to cover an outer peripheral end of the movable-side sealing fitting 3; and the insulating layer 12, formed on the outer peripheries of the vacuum container 1 and the electric field relaxing shields 20, 21. The electric field relaxing shields 20, 21 are respectively constituted of radially expanding fixing parts 20a, 21a, and axially extending relaxing parts 20b, 21b, and inner peripheral surfaces of the relaxing parts 20b, 21b are provided with recessed curved surfaces. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：将应力分散在形成在电场缓和屏蔽和真空绝热容器之间的绝缘层内，以抑制绝缘缺陷的产生。 解决方案：阀包括密封到真空绝热容器1中的两个端部开口的固定侧密封配件2和可动侧密封配件3; 固定侧触点5和可动侧触点6，其被容纳在真空绝热容器1中并自由地彼此接触/脱离接触; 固定侧电场缓和护罩20，设置成覆盖固定侧密封配件2的外周端; 设置成覆盖可动侧密封配件3的外周端部的可动侧电场缓和护罩21; 以及绝缘层12，其形成在真空容器1的外周和电场缓和护罩20,21之间。电场缓和护罩20,21分别由径向扩张的固定部20a，21a构成，并且轴向延伸放松 部件20b，21b和松弛部分20b，21b的内周面设有凹入的曲面。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2011014285A

公开(公告)日：2011-01-20

申请号：JP2009155389

申请日：2009-06-30

Applicant: Toshiba Corp ,  株式会社東芝

Inventor： SHIOIRI SATORU ,  ASARI NAOKI ,  SASAGE KOSUKE

IPC: H01H33/66

Abstract: PROBLEM TO BE SOLVED: To moderate an electric field on a contact surface of a vacuum valve, to restrain irregular discharge, and to enhance a withstand voltage characteristic.SOLUTION: This vacuum valve includes a vacuum insulating container 1, a fixed side sealing fitting 2 and a movable side sealing fitting 3 sealed respectively to both end opening parts of the vacuum insulating container 1, a fixed side electrification shaft 4 penetrated through and fixed to the fixed side sealing fitting 2, a fixed side contact 5 fixed to a fixed side electrification shaft 4 end, a fixed side insulating shield 6 for surrounding a side face of the fixed side contact 5 with a prescribed clearance, a movable side contact 7 contacting and separated with/from the fixed side contact 5, a movable side electrification shaft 8 for fixing the movable side contact 7, and for penetrating movably the movable side sealing fitting 3 therethrough, a movable side insulating shield 11 for surrounding a side face of the movable side contact 7 with a prescribed clearance, when the movable side contact 7 is located in an electrode opening position, and an freely extendable bellows 9 of which the one end is sealed to an intermediate part of the movable side electrification shaft 8 and of which the other end is sealed to the movable side sealing fitting 3.

Abstract translation: 要解决的问题：调节真空阀的接触表面上的电场，以抑制不规则放电，并提高耐电压特性。解决方案：该真空阀包括真空绝热容器1，固定侧密封配件2 以及分别密封在真空绝热容器1的两端开口部的可动侧密封配件3，贯通固定于固定侧密封配件2的固定侧带电轴4，固定侧固定侧电气 轴4端，用于围绕固定侧接触件5的侧面以规定间隙包围的固定侧绝缘护罩6，与固定侧接触件5接触/分离的可动侧接触件7，可动侧带电轴8，用于 固定可动侧接触件7，并且通过可动侧密封件3可移动地穿过可动侧密封件3;可动侧绝缘护罩11， 当可动侧触点7位于电极打开位置时，具有规定间隙的可动侧触点7和一端自由延伸的波纹管9，其一端被密封到可动侧带电轴8的中间部分， 另一端与活动侧密封配件3密封。

公开(公告)号：JP2010177122A

公开(公告)日：2010-08-12

申请号：JP2009020384

申请日：2009-01-30

Applicant: Toshiba Corp ,  株式会社東芝

Inventor： ISHII AKIRA ,  SATO JUNICHI ,  SHIOIRI SATORU ,  ASARI NAOKI ,  SAKAGUCHI OSAMU ,  TAGAYA OSAMU

IPC: H01H33/66 ,  H05F1/02

Abstract: PROBLEM TO BE SOLVED: To increase creeping insulation characteristics at an internal surface of a vacuum insulating container to which a metal vapor-generated product adheres.
SOLUTION: The vacuum valve includes: a tubular vacuum insulating container 1 made of ceramic; sealing hardware 2, 3 each sealed to openings of both ends of the vacuum insulating container 1; and a pair of detachable contacts 5, 6 housed in the vacuum insulating container 1, wherein at least a circular uneven portion 9 is provided on an internal surface of the vacuum insulating container 1 facing the outer periphery of the detached pair of contacts 5, 6.
COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：增加金属蒸汽产生产品附着在真空绝热容器的内表面上的蠕变绝缘特性。

解决方案：真空阀包括：由陶瓷制成的管状真空绝热容器1; 密封件2,3密封到真空绝热容器1的两端的开口; 以及容纳在真空绝热容器1中的一对可拆卸触点5,6，其中至少一个圆形凹凸部分9设置在真空绝热容器1的与分离的一对触点5,6的外周面对置的内表面上 。版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2010073459A

公开(公告)日：2010-04-02

申请号：JP2008239049

申请日：2008-09-18

Applicant: Toshiba Corp ,  株式会社東芝

Inventor： SATO JUNICHI ,  ISHII AKIRA ,  SHIOIRI SATORU ,  ASARI NAOKI ,  SAKAGUCHI OSAMU ,  TAGAYA OSAMU

IPC: H01H33/66

Abstract: PROBLEM TO BE SOLVED: To provide a vacuum bulb using a vacuum insulated container which hardly charges and of which the surface dielectric strength can be improved.
SOLUTION: The vacuum bulb is provided with a vacuum insulated container 1 made of ceramic, sealing fittings 2, 3 which are respectively sealed at the both end apertures of the vacuum insulated container 1, a pair of contactable and separable contacts 5, 6 housed in the vacuum insulated container 1, and first and second resistance layers 10. 11 which are installed on the inner face of the vacuum insulated container 1 and have resistivity smaller than ceramic. These resistance layers 10, 11 are opposed to an arc-shield 9 end constituting the vacuum bulb, and the thickness of the second resistance layer 11 which is a portion where electric field intensity increases is thicker than that of the first resistance layer 10.
COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供一种使用几乎不充电并且其表面介电强度可以提高的真空绝热容器的真空室。

解决方案：真空灯泡设置有真空绝热容器1，其由陶瓷密封配件2,3制成，密封配件2,3分别密封在真空绝热容器1的两端孔处，一对可接触和可分离的触点5， 6，以及安装在真空绝热容器1的内表面上并具有小于陶瓷电阻率的第一和第二电阻层10. 11。 这些电阻层10,11与构成真空管的防弧罩9的端部相对，作为电场强度增加的部分的第二电阻层11的厚度比第一电阻层10的厚度厚。 P>版权所有（C）2010，JPO＆INPIT