公开(公告)号：US20110064182A1

公开(公告)日：2011-03-17

申请号：US12871244

申请日：2010-08-30

Applicant: Norio KAWASHIMA ,  Hirofumi Oizumi ,  Satoru Aoike

Inventor： Norio KAWASHIMA ,  Hirofumi Oizumi ,  Satoru Aoike

IPC: G21C7/08

CPC classification number: G21C7/113 ,  Y02E30/31 ,  Y02E30/39

Abstract: A control rod for a boiling water reactor is provided with a structure element having mutually-perpendicular four blades. The four blades have a neutron absorber-filling region that neutron absorber is held, respectively. In the structure element, a plurality of regions formed in an axial direction of the control rod include a first region having a first cross-section that forms a first united cruciform cross-section of the four blades connected one another, a second region having a second cross-section that has each separated cross-section of the four blades, and a third region having a third cross-section that has a second united cross-section of continuous two blades of the four blades, disposed in a diametrically opposite direction and facing each other and each separated cross-section of remaining two blades of the four blades, disposed perpendicularly to the continuous two blades. The first region is disposed in an upper end portion and a lower end portion of the structure element, respectively. The third region is disposed between the first regions. The second regions are disposed between the first regions exclusive of the third region.

Abstract translation: 用于沸水反应器的控制杆设置有具有相互垂直的四个叶片的结构元件。 四个叶片具有分别保持中子吸收体的中子吸收体填充区域。 在结构元件中，沿控制杆的轴向形成的多个区域包括具有形成彼此连接的四个刀片的第一联合十字形截面的第一横截面的第一区域，具有第二区域的第二区域， 具有四个叶片的每个分离的横截面的第二横截面，以及具有第三横截面的第三区域，该第三横截面具有沿直径相反的方向设置的四个叶片的连续的两个叶片的第二联合横截面， 面对彼此并且四个叶片中剩余的两个叶片的每个分开的横截面垂直于连续的两个叶片设置。 第一区域分别设置在结构元件的上端部和下端部。 第三区域设置在第一区域之间。 第二区域设置在不包括第三区域的第一区域之间。

公开(公告)号：US06574295B2

公开(公告)日：2003-06-03

申请号：US09953370

申请日：2001-09-17

Applicant: Michio Nakayama ,  Norio Kawashima ,  Shinobu Okido

Inventor： Michio Nakayama ,  Norio Kawashima ,  Shinobu Okido

IPC: G21C710

CPC classification number: G21C7/113 ,  G21Y2002/103 ,  G21Y2002/303 ,  G21Y2004/30 ,  G21Y2004/302 ,  Y02E30/31 ,  Y02E30/39

Abstract: In order to provide a boiling water type nuclear reactor use control rod with a guide use roller which improves corrosive environment at a clearance in the guide use roller and suppresses a generation of stress corrosion cracking while maintaining sliding function of the control rod by the guide use roller, at least one of a handle 5, a lower portion supporting plate 2a and a dropping speed limiter 2 is provided with the guide use roller, and a space which causes water flow in a clearance between a pin 9 and a pin hole 12 in the guide use roller is provided adjacent the clearance.

公开(公告)号：US4916406A

公开(公告)日：1990-04-10

申请号：US316062

申请日：1989-02-27

Applicant: Kiyoshi Ichimura ,  Kozo Yasuhara ,  Norio Kawashima

Inventor： Kiyoshi Ichimura ,  Kozo Yasuhara ,  Norio Kawashima

IPC: G01J1/16 ,  G01N21/27 ,  H03G3/20

CPC classification number: G01J1/16 ,  G01N21/27 ,  H03G3/20

Abstract: An automatic gain control circuit comprising an input terminal means for receiving first and second signals, an amplifier for receiving and amplifying first and second signals and outputting a first output signal when receives the first signal and outputting a second output signal when receives the second signals, input means for receiving an operation control signal and responsive to the operation control signal for separately inputting the first and second signals to the amplifier with a predetermined interval of time, control signal generating means responsive to the second output signal of the amplifier for generating a control signal, selection means connected to the input means for supplying the second output signal of the amplifier to the control signal generating means when the second signal is fed to the amplifier and sending out the first output signals to an external circuit when the first signal is fed to the amplifier and gain control means connected to the amplifier and the control signal generating means and responsive to the control signal for regulating the gain of the amplifier, wherein the control signal generating means includes gain maintaining means for maintaining the regulated gain of the amplifier.

公开(公告)号：US08213563B1

公开(公告)日：2012-07-03

申请号：US12019103

申请日：2008-01-24

Applicant: Takayuki Arakawa ,  Koichi Machida ,  Norio Kawashima ,  Kazuki Kobayashi ,  Yoshiharu Kikuchi

Inventor： Takayuki Arakawa ,  Koichi Machida ,  Norio Kawashima ,  Kazuki Kobayashi ,  Yoshiharu Kikuchi

IPC: G21C7/00

CPC classification number: G21C7/113 ,  G21C7/10 ,  Y02E30/39

Abstract: A control rod includes a tie-rod, a handle mounted to an upper end portion of the tie-rod, either a connector plate or a fall velocity limiter mounted to a lower end portion of the tie-rod, sheaths having a U-shaped cross-section, welded intermittently to the tie-rod at a plurality of locations in the axial direction of the tie-rod, and having an upper end welded to the handle and a lower end welded to either the connector plate or the fall velocity limiter, and a neutron absorbing member disposed inside each of the sheaths. An upper end of a weld portion located at uppermost position in an axial direction of the tie-rod among a plurality of weld portions between the tie-rod and the sheath is disposed at a position within a range between 0.8 and 13% of total axial length Ls of the sheath below an upper end of the sheath.

Abstract translation: 控制杆包括拉杆，安装到拉杆的上端部分的手柄，安装到拉杆的下端部分的连接板或下落速度限制器，具有U形的护套 横截面，在连杆的轴向方向上的多个位置处间断地焊接到拉杆，并且具有焊接到手柄的上端，以及焊接到连接器板或下落速度限制器的下端 以及设置在每个护套内的中子吸收构件。 位于拉杆和护套之间的多个焊接部分中的位于拉杆的轴向方向上的最上位置处的焊接部分的上端设置在总轴向的0.8和13％之间的范围内的位置 在鞘的上端下方的鞘的长度Ls。

公开(公告)号：US6028906A

公开(公告)日：2000-02-22

申请号：US134817

申请日：1998-08-17

Applicant: Norio Kawashima ,  Yasuyuki Gotoh ,  Akira Koizumi ,  Kouichi Machida ,  Yoshiharu Kikuchi ,  Takayoshi Yasuda ,  Yoshitaka Nishino

Inventor： Norio Kawashima ,  Yasuyuki Gotoh ,  Akira Koizumi ,  Kouichi Machida ,  Yoshiharu Kikuchi ,  Takayoshi Yasuda ,  Yoshitaka Nishino

IPC: G21C21/18 ,  G21C7/10 ,  G21C7/113

CPC classification number: G21C7/113 ,  Y02E30/31 ,  Y02E30/39

Abstract: The present invention relates to a control rod installed in a boiling water reactor (BWR), and particularly to a control rod using metal. An object of the present invention is to provide a manufacturing method of a control rod for a boiling water reactor, having excellent corrosion resistance in high temperature water and excellent wear resistance at the time of fabrication, and in which the influence of the manufacturing process is slight. In order to achieve the above described object, the present invention provides a manufacturing method of a control rod for a boiling water reactor constructed with sheaths having a U-shaped cross section attached to each end of a tie rod having a cruciform cross section, and rod, plate or oval tube cross section metal hafnium type neutron absorber material contained inside the sheaths, in which an anodized film is provided on a surface of the neutron absorber material as a pre-process of assembly of the neutron absorber material in the structure of the control rod.

Abstract translation: 本发明涉及安装在沸水反应器（BWR）中的控制棒，特别涉及一种使用金属的控制棒。 本发明的目的是提供一种用于沸水反应器的控制棒的制造方法，其在高温水中具有优异的耐腐蚀性，并且在制造时具有优异的耐磨性，并且其中制造过程的影响是 轻微。 为了实现上述目的，本发明提供了一种用于沸水反应器的控制棒的制造方法，该沸水反应器的控制棒由具有连接到具有十字形截面的拉杆的每个端部的具有U形横截面的护套构成，以及 杆，板或椭圆管截面金属铪型中子吸收体材料，其包含在护套内部，其中阳极化膜设置在中子吸收体材料的表面上，作为中子吸收体材料在结构中的组装的预处理 控制杆。

公开(公告)号：US5039849A

公开(公告)日：1991-08-13

申请号：US374524

申请日：1989-06-30

Applicant: Osamu Tano ,  Norio Kawashima

Inventor： Osamu Tano ,  Norio Kawashima

IPC: G06K13/08

CPC classification number: G06K13/08

Abstract: A card conveying structure for card accessing devices, comprising: a casing defining a card inlet and a card guideway; a drive pulley and a driven pulley supported on one side of the card guideway by a first pivot axis and a second pivot axis, respectively, defining a zero or small angle relative to a vertical line perpendicular to a major surface of a card guided by the guideway; and an endless belt passed around the two pulleys, effective diameters of the first and second pulleys being selected in relation with spacings of the pivot axes relative to the card guideway so that a linear span ofthe belt may extend along the guideway and abut the major surface of the card. By urging the linear span of the belt against the card, the card may be conveyed by the movement of the belt. Alternatively, by slanting at least one of the pulleys towards the guideway until its periphery or the belt passed around it comes into contact with the card, the movement of the belt or the pulley can be transmitted to the card. In either case, elimination of the need for pulleys having piovt axes perpendicular to the card conveying direction and in parallel with the card conveying plane leads to a substantial reduction in the vertical dimension of the card accessing device.

公开(公告)号：US08761331B2

公开(公告)日：2014-06-24

申请号：US12871244

申请日：2010-08-30

Applicant: Norio Kawashima ,  Hirofumi Oizumi ,  Satoru Aoike

Inventor： Norio Kawashima ,  Hirofumi Oizumi ,  Satoru Aoike

IPC: G21C7/113 ,  G21C7/00

CPC classification number: G21C7/113 ,  Y02E30/31 ,  Y02E30/39

Abstract: A control rod for a boiling water reactor is provided with a structure element having mutually-perpendicular four blades. The four blades have a neutron absorber-filling region that neutron absorber is held, respectively. In the structure element, a plurality of regions formed in an axial direction of the control rod include a first region having a first cross-section that forms a first united cruciform cross-section of the four blades connected one another, a second region having a second cross-section that has each separated cross-section of the four blades, and a third region having a third cross-section that has a second united cross-section of continuous two blades of the four blades, disposed in a diametrically opposite direction and facing each other and each separated cross-section of remaining two blades of the four blades, disposed perpendicularly to the continuous two blades.

Abstract translation: 用于沸水反应器的控制杆设置有具有相互垂直的四个叶片的结构元件。 四个叶片具有分别保持中子吸收体的中子吸收体填充区域。 在结构元件中，沿控制杆的轴向形成的多个区域包括具有形成彼此连接的四个刀片的第一联合十字形截面的第一横截面的第一区域，具有第二区域的第二区域， 具有四个叶片的每个分离的横截面的第二横截面，以及具有第三横截面的第三区域，该第三横截面具有沿直径相反的方向设置的四个叶片的连续的两个叶片的第二联合横截面， 面对彼此并且四个叶片中剩余的两个叶片的每个分开的横截面垂直于连续的两个叶片设置。

公开(公告)号：US20120243653A1

公开(公告)日：2012-09-27

申请号：US13372531

申请日：2012-02-14

Applicant: Yu Kuwada ,  Kazuki Kobayashi ,  Norio Kawashima ,  Koichi Machida ,  Toraki Sakuma ,  Takeshi Tsukamoto ,  Hidekazu Takazawa

Inventor： Yu Kuwada ,  Kazuki Kobayashi ,  Norio Kawashima ,  Koichi Machida ,  Toraki Sakuma ,  Takeshi Tsukamoto ,  Hidekazu Takazawa

IPC: G21C7/10 ,  G21C21/18

CPC classification number: G21C7/113 ,  G21C21/18 ,  Y02E30/31 ,  Y02E30/39

Abstract: A control rod has four blades, each of which has a rectangular cross section in a plane perpendicular to an axis of the control rod, disposed so as to form a cross-shaped cross section in the plane perpendicular to the axis. The blades include a plurality of aligned square tubes having a square cross section in a plane perpendicular to the axis and including a neutron absorber filling hole filled with neutron absorber, frame plates disposed parallel to the aligned square tubes in a direction perpendicular to a width direction of the blade, and on one side end and another side end of the blade in the width direction, respectively, and cover plates disposed along the width direction and sandwiching the aligned square tubes. Each blade has the aligned square tubes, the frame plates and the cover plates joined together as a single-piece construction by Hot Isostatic Pressing diffusion bonding.

Abstract translation: 控制杆具有四个叶片，每个叶片在垂直于控制棒的轴线的平面中具有矩形横截面，其设置成在垂直于轴线的平面中形成十字形横截面。 叶片包括多个排列的方管，在垂直于该轴线的平面中具有正方形截面，并且包括填充有中子吸收体的中子吸收器填充孔，与垂直于宽度方向的方向平行于对准的方管设置的框架板 以及在宽度方向上的叶片的一侧端部和另一侧端部以及沿着宽度方向设置的夹板和夹着对准的方形管的盖板。 每个叶片具有排列的方形管，框架板和盖板通过热等静压挤压粘合作为单件结构连接在一起。

公开(公告)号：US06654438B1

公开(公告)日：2003-11-25

申请号：US09916274

申请日：2001-07-30

Applicant: Yasuyuki Gotoh ,  Norio Kawashima ,  Akira Koizumi ,  Yoshiharu Kikuchi

Inventor： Yasuyuki Gotoh ,  Norio Kawashima ,  Akira Koizumi ,  Yoshiharu Kikuchi

IPC: G21C7113

CPC classification number: G21C7/113 ,  Y02E30/31 ,  Y02E30/39

Abstract: A control rod for a BWR according to the present invention comprises a first unit composed of a tie rod, a handle mounted on an axially upper portion of the tie rod and a lower support member or falling speed limiter mounted on a axially lower portion of the tie rod; and a second unit composed of a sheath containing therein reactivity control material, an upper end plate mounted on an axially upper portion of the sheath and a lower end plate mounted on an axially lower portion of the sheath, wherein an upper portion of the upper end plate is fixed to the handle, a lower portion of the lower end plate is fixed to the lower support member or falling speed limiter, whereby the control rod is constructed as a joined body of the first unit and the second unit.

公开(公告)号：US5164153A

公开(公告)日：1992-11-17

申请号：US760498

申请日：1991-09-16

Applicant: Takashi Fukumoto ,  Hiromasa Hirakawa ,  Norio Kawashima ,  Yasuhiro Aizawa ,  Hideaki Ishizaki

Inventor： Takashi Fukumoto ,  Hiromasa Hirakawa ,  Norio Kawashima ,  Yasuhiro Aizawa ,  Hideaki Ishizaki

IPC: G21C7/113

CPC classification number: G21C7/113 ,  G21Y2002/201 ,  G21Y2002/203 ,  G21Y2004/30 ,  Y02E30/31 ,  Y02E30/39

Abstract: A control rod assembly for a boiling water reactor comprises a tie-rod of a cross-shaped section, and four sheaths. Each of the sheaths is of a U-shaped section and mounted to the respective arms of the tie-rod. One or more neutron absorber materials are disposed within a space defined by the arm and the sheath. The neutron absorber material is axially separated into two portions. One of two portions is supported by a supporting member. The other portion is suspended by a handle.

Abstract translation: 用于沸水反应器的控制棒组件包括十字形截面的拉杆和四个护套。 每个护套都是U型截面，并且安装到拉杆的相应臂上。 一个或多个中子吸收材料设置在由臂和护套限定的空间内。 中子吸收材料轴向分为两部分。 两个部分中的一个由支撑构件支撑。 另一部分由手柄悬挂。