公开(公告)号：US5398269A

公开(公告)日：1995-03-14

申请号：US33548

申请日：1993-03-18

申请人： Makoto Nagase ,  Yamato Asakura ,  Naohito Uetake ,  Toshio Sawa ,  Shunsuke Uchida ,  Renzo Takeda ,  Katsumi Ohsumi

发明人： Makoto Nagase ,  Yamato Asakura ,  Naohito Uetake ,  Toshio Sawa ,  Shunsuke Uchida ,  Renzo Takeda ,  Katsumi Ohsumi

IPC分类号： G21D1/00 ,  G21C19/307 ,  G21D3/08

CPC分类号： G21C19/307 ,  G21Y2002/103 ,  G21Y2004/10 ,  G21Y2004/20 ,  G21Y2004/40

摘要： A water quality control method for a nuclear power plant comprising the steps of maintaining the iron concentration in the feed water below 0.05 ppb by increasing iron removing rate at a condensed water purifying loop, shifting the pH of the reactor water below a pH of 6.8 determined at a room temperature by injecting carbon dioxide gas in the primary cooling system and further optionally reducing the dissolved oxygen concentration in the reactor water below 20 ppb by injecting hydrogen gas into the primary cooling system, whereby .sup.60 Co ion concentration in the primary cooling system is maintained low for a long interval.

摘要翻译： 一种用于核电厂的水质控制方法，包括以下步骤：通过在冷凝水净化回路中提高除铁速率将供水中的铁浓度保持在0.05ppb以下，将反应器水的pH值调至低于6.8的pH值 在室温下通过在一次冷却系统中注入二氧化碳气体，并且进一步任选地通过将氢气注入一次冷却系统中将反应器内的低于20ppb的水中的溶解氧浓度降低，由此维持一次冷却系统中的60Co离子浓度 低间隔很长。

公开(公告)号：US5377245A

公开(公告)日：1994-12-27

申请号：US137975

申请日：1993-10-19

申请人： Naohito Uetake ,  Makoto Nagase ,  Masayoshi Kondoh ,  Toshio Sawa ,  Shunsuke Uchida ,  Yamato Asakura

发明人： Naohito Uetake ,  Makoto Nagase ,  Masayoshi Kondoh ,  Toshio Sawa ,  Shunsuke Uchida ,  Yamato Asakura

IPC分类号： G21C19/307 ,  G21D1/00 ,  G21D3/08 ,  G21F9/28 ,  G21C9/00

CPC分类号： G21C19/307 ,  G21Y2002/501 ,  G21Y2002/601 ,  G21Y2004/20

摘要： An object of the present invention is to provide a method and a nuclear plant capable of preventing deposition and activation of crud to a nuclear fuel rod and decreasing the radioactivity level in reactor water. Metal ions solely having a low deposition rate coefficient are made to coexist to prevent or decrease deposition of radioactive corrosion products to the nuclear fuel rod. A method and a nuclear plant capable of preventing deposition and activation of crud to the nuclear fuel rod and decreasing the radioactivity level in reactor water can be provided.

摘要翻译： 本发明的一个目的是提供一种能够防止核燃料棒堆积和活化的方法和核电站，降低反应堆水中的放射性水平。 仅使具有低沉积速率系数的金属离子共存以防止或减少放射性腐蚀产物沉积到核燃料棒。 可以提供能够防止核燃料棒的原油沉积和活化并降低反应堆水中的放射性水平的方法和核电站。

公开(公告)号：US4894202A

公开(公告)日：1990-01-16

申请号：US103705

申请日：1987-10-02

申请人： Makoto Nagase ,  Yamato Asakura ,  Hidetoshi Karasawa ,  Masaharu Sakagami ,  Shunsuke Uchida ,  Toshio Sawa ,  Katsumi Ohsumi

发明人： Makoto Nagase ,  Yamato Asakura ,  Hidetoshi Karasawa ,  Masaharu Sakagami ,  Shunsuke Uchida ,  Toshio Sawa ,  Katsumi Ohsumi

IPC分类号： G21C19/307 ,  G21C17/022 ,  G21C19/30 ,  G21D1/00 ,  G21D3/08

CPC分类号： G21C17/0225

摘要： Disclosed is a method and apparatus for inhibiting radioactive substances eluting into cooling water of a nuclear plant. The method uses an index consisting of an amount of iron adhered onto the fuel cladding surface, that is calculated from the iron concentration of the cooling water and the operation time. A formation of a layer of the iron oxide on the fuel cladding surface is confirmed based upon the covering ratio of 100%. When the covering ratio is smaller than 100%, the iron concentration in the cooling water is controlled to remain constant at a maximum concentration. The Fe/Ni molar concentration ratio in the cooling water is adjusted to be set from about 2 to 10 after the layer of iron oxide reaches a covering ratio of 100%. .sup.58 Co ion and .sup.60 Co ion concentrations in the cooling water can be decreased without greatly increasing the concentration of precipitating radioactive crud, and the surface dosage in the primary system can be decreased at the time of regular checking.

摘要翻译： 公开了一种抑制放射性物质洗脱到核电厂冷却水中的方法和装置。 该方法使用由附着在燃料包覆表面上的铁量组成的指数，其由冷却水的铁浓度和操作时间计算。 基于100％的覆盖率确认燃料包覆面上的氧化铁层的形成。 当覆盖率小于100％时，冷却水中的铁浓度被控制为保持恒定在最大浓度。 在氧化铁层达到100％的覆盖率之后，将冷却水中的Fe / Ni摩尔浓度比调整为约2〜10。 可以降低冷却水中的58Co离子和60Co离子浓度，而不会大大增加沉淀放射性碎屑的浓度，并且在定期检查时可以减少初级体系中的表面剂量。

公开(公告)号：US4927598A

公开(公告)日：1990-05-22

申请号：US240601

申请日：1988-09-06

申请人： Yoshitaka Nishino ,  Toshio Sawa ,  Katsumi Ohsumi ,  Hisao Itow

发明人： Yoshitaka Nishino ,  Toshio Sawa ,  Katsumi Ohsumi ,  Hisao Itow

IPC分类号： G21D1/00 ,  G21C17/022 ,  G21C19/307 ,  G21D3/08

CPC分类号： G21C17/0225 ,  G21C19/307

摘要： The primary cooling water in a primary cooling water recirculation path of a nuclear power plant is heated and recirculated in the presence of beryllium, and a film of nickel ferrite and/or cobalt ferrite is formed on the surface of pipings and various apparatus and devices connecting with the primary cooling water. The beryllium is injected in the form of beryllium ion into the primary cooling water, or is disposed in the form of beryllium or beryllium-containing alloy in the piping and/or the various apparatus and devices.

摘要翻译： 核电厂的一次冷却水再循环路径中的主要冷却水在铍存在下被加热和再循环，并且在管道表面上形成镍铁氧体和/或钴铁氧体膜，并连接各种装置和装置 与主要冷却水。 将铍以铍离子的形式注入主冷却水中，或者在管道和/或各种装置和装置中以铍或铍合金的形式设置。

公开(公告)号：US5028298A

公开(公告)日：1991-07-02

申请号：US273513

申请日：1988-11-04

申请人： Tsutomu Baba ,  Koichi Chino ,  Shunsuke Uchida ,  Toshio Sawa ,  Makoto Kikuchi

发明人： Tsutomu Baba ,  Koichi Chino ,  Shunsuke Uchida ,  Toshio Sawa ,  Makoto Kikuchi

IPC分类号： G21F9/08 ,  B01D1/30 ,  B01D19/00 ,  B01D46/00 ,  C02F1/04 ,  G21F9/00

CPC分类号： B01D1/305 ,  B01D19/0031 ,  C02F1/048 ,  Y10S159/12 ,  Y10S159/27 ,  Y10S159/28 ,  Y10S203/16

摘要： The present invention relates to a technique of concentrating waste water whereby the water content of the waste water is removed with a high decontamination factor, employs a porous membrane having a property allowing gas such as steam to permeate but not allowing a liquid such as water to do, as a membrane for concentrating the waste water, and adopts a method wherein the waste water is turned into a vapor flow and this vapor flow is made to contact the porous membrane so as for the waste water to be concentrated on the occasion when the waste water is to be concentrated by means of this porous membrane. By turning the waste water into the vapor flow, most of various metal ions, a surfactant, etc. existing in the waste water are separated from the vapor flow. Mist, metal ions in the mist and others contained in the vapor flow are removed by the aforesaid porous membrane from the steam while permeating the same. This enables the disposal of the waste water with a high decontamination factor, for a long duration and in a stable manner. When this technique of concentrating waste water is adapted to a plant for disposal of waste water of high electroconductivity produced from a nuclear power station, for instance, various tanks, a demineralizer, ion-exchange resin, etc. provided on the downstream of a concentrator are dispensed with, and thus the plant for disposal can be simplified to a large extent.

摘要翻译： PCT No.PCT / JP88 / 00245 Sec。 371日期：1988年11月4日 102（e）日期1988年11月4日PCT PCT。 出版物WO88 / 06914 日本公开日1988年9月22日。本发明涉及一种浓缩废水的技术，其中废水的含水量以高净化因子除去，采用具有允许诸如蒸汽的气体渗透但不允许的性质的多孔膜 允许诸如水的液体作为用于浓缩废水的膜，并且采用其中废水变成蒸汽流的方法，并使该蒸汽流与多孔膜接触，以使废水达到 集中在废水通过该多孔膜浓缩的场合。 通过将废水转化为蒸汽流，存在于废水中的大多数各种金属离子，表面活性剂等与蒸汽流分离。 雾中的金属离子和包含在蒸气流中的其它物质被透过前述多孔膜从蒸汽中除去。 这样可以长时间和稳定地处理具有高去污因子的废水。 当这种将废水浓缩的技术适用于处理从核电站产生的高导电性废水的设备，例如设置在浓缩器下游的各种罐，脱盐装置，离子交换树脂等 可以在很大程度上简化处理设备。

公开(公告)号：US4294697A

公开(公告)日：1981-10-13

申请号：US60475

申请日：1979-07-25

申请人： Toshio Sawa ,  Masayoshi Kubota ,  Sankichi Takahashi ,  Toyohiko Kaneko

发明人： Toshio Sawa ,  Masayoshi Kubota ,  Sankichi Takahashi ,  Toyohiko Kaneko

IPC分类号： C02F1/24 ,  C02F1/28 ,  C02F1/46 ,  C02F1/463 ,  C02F1/465 ,  C02F1/52 ,  B03D1/00

CPC分类号： C02F1/283 ,  C02F1/465 ,  C02F1/52 ,  C02F2303/04

摘要： The present invention relates to an apparatus for removing suspended matter, organic matter and nitrogen compounds in the sewage. A processing tank is provided with a floating-separation zone at the upper portion thereof and an electrolysis zone below the floating-separation zone. A bed of porous adsorbent is disposed in the electrolysis zone and electrodes are disposed among the adsorbent. Bubbles generated upon the feed of current to the electrodes rise up through the floating-separation zone to remove the suspended matter and the organic matter in the sewage before introducing the sewage into the electrolysis zone. The porous adsorbent is polarized by the feed of current to the electrodes and results in removing matter remaining in the sewages, especially nitrogen compounds.

摘要翻译： 本发明涉及一种用于去除污水中悬浮物，有机物和氮化合物的装置。 处理槽在其上部设有浮动分隔区，在浮动分隔区下方设有电解区。 多孔吸附剂床设置在电解区中，电极设置在吸附剂中。 在向电极提供电流时产生的气泡通过浮动分离区上升，以便在将污水引入电解区之前去除污水中的悬浮物质和有机物质。 多孔吸附剂通过向电极的电流馈送而极化，并导致除去残留在污水中的物质，特别是氮化合物。

公开(公告)号：US4028237A

公开(公告)日：1977-06-07

申请号：US662615

申请日：1976-03-01

申请人： Shigeoki Nishimura ,  Toshio Sawa ,  Kouji Otani ,  Seiichi Kikkawa

发明人： Shigeoki Nishimura ,  Toshio Sawa ,  Kouji Otani ,  Seiichi Kikkawa

IPC分类号： C01F11/00 ,  C02F1/00 ,  C02F1/52 ,  C02F1/58 ,  C02B1/20

CPC分类号： C02F1/583 ,  C01F11/00 ,  C02F1/5236 ,  C02F1/5245 ,  C02F2101/14 ,  C02F2209/06 ,  Y10S210/915

摘要： There are disclosed methods for removing fluorine values from fluorine-containing waste waters, in which aluminum ions are added to fluorine-containing waste water to convert fluorine to hydroxyfluoride complexes, adding phosphoric acid or phosphate and calcium compound are added to form fluoride apatite with residual fluorine in the waste water, and the hydroxy-fluoride complex and fluoride apatite are removed from the waste water.When waste water containing a phosphate in addition to fluorine is treated, the waste water is divided, according to the fluorine concentration, into concentrated waste water having a high fluorine concentration and dilute waste water having a low fluorine concentration; calcium compound is added to the concentrated waste water to form calcium fluoride, aluminum ions are added to the dilute waste water to form a hydroxy-fluoride complex; the so treated dilute waste water is mixed with the phosphate-containing concentrated waste water from which the precipitated calcium fluoride has been removed, calcium compound is added to the mixture to form fluoride apatite, and the hydroxy-fluoride complex and fluoride apatite are removed from the mixed waste water.

摘要翻译： 公开了从氟化废水中除去氟离子的方法，其中向含氟废水中加入铝离子以将氟转化为羟基氟化物络合物，加入磷酸或磷酸钙和钙化合物以形成具有残留物的氟化磷灰石 从废水中除去废水中的氟，氟化物氟化物和氟磷灰石。

公开(公告)号：US5087017A

公开(公告)日：1992-02-11

申请号：US499336

申请日：1990-06-12

申请人： Toshio Sawa ,  Norikimi Irie ,  Yuzo Hayashi

发明人： Toshio Sawa ,  Norikimi Irie ,  Yuzo Hayashi

IPC分类号： F16K3/18 ,  F16K51/00

CPC分类号： F16K51/00 ,  F16K3/188

摘要： A non-sliding gate valve includes a valve housing and a valve body, the valve body having a paired valve plate and a counter plate disposed within the valve housing in parallel with each other. Also included are a pair of inner supports, each made of a metallic circular plate and arranged in parallel with each other, an outer support arranged outside the inner supports, and a pair of annular elastic connecting sheets arranged radially between the inner and outer supports and in parallel with each other, with a gap being left therebetween. The valve and counter plates are sealingly connected to the confronting inner supports, respectively; and the inner and outer supports are sealingly secured at their peripheries to the annular sheets at their inner and outer diameter portions, respectively. The annular sheets are each formed with at least one annular corrugation on their surfaces, a sealed space being formed between the inner and outer supports and the annular sheets so as to be connected to a pressurized fluid source.

摘要翻译： PCT No.PCT / JP90 / 00020 Sec。 371 1990年6月12日第 102（e）1990年6月12日PCT PCT 1990年1月10日PCT公布。 公开号WO90 / 08275 日期：1990年7月26日。非滑动闸阀包括阀壳体和阀体，所述阀体具有彼此平行设置在所述阀壳体内的成对阀板和对置板。 还包括一对内部支撑，每个内部支撑件由金属圆形板形成并且彼此平行地布置，外侧支撑件设置在内部支撑件的外侧，以及一对环形弹性连接片材，径向地布置在内部和外部支撑件之间， 彼此平行，其间留有间隙。 阀和对板分别密封地连接到相对的内部支撑件上; 并且内外支撑件分别在它们的内径部分和外径部分处分别密封地固定在环形片上。 环形片在其表面上各自形成至少一个环形波纹，在内部和外部支撑件和环形片之间形成密封空间，以便连接到加压流体源。

公开(公告)号：US3966562A

公开(公告)日：1976-06-29

申请号：US493480

申请日：1974-07-31

申请人： Toshimi Mukushi ,  Kenkichi Izumi ,  Sankichi Takahashi ,  Yoshiaki Okazima ,  Toshio Sawa ,  Mithumasa Komai

发明人： Toshimi Mukushi ,  Kenkichi Izumi ,  Sankichi Takahashi ,  Yoshiaki Okazima ,  Toshio Sawa ,  Mithumasa Komai

IPC分类号： B01D3/06 ,  C02F1/04 ,  C02F1/06 ,  B01D3/00

CPC分类号： C02F1/06 ,  B01D3/065 ,  C02F1/042 ,  Y02P70/34 ,  Y10S159/38

摘要： A multi-stage distillation plant consisting essentially of a multi-flash evaporator provided with a multi-flash chamber which is divided into a heat recovery section and a heat rejection section. In this multi-stage flash distillation plant, the aforesaid flash evaporator is provided with a deaerator for deaerating cold sea water, a thickener for separating brine containing a relatively great amount of seeds, from concentrated brine which has been extracted from a front chamber of the final stage flash chamber, and a seed mixing tank for obtaining a seed-mixed brine, whereby part of the sea water which has passed through the deaerator is supplied as a feed sea water to the rear chamber of the final stage flash chamber, while the brine containing a relatively great amount of seed and extracted from the thickener is joined to the seed-mixed brine fed from the seed mixing tank. Thus, the confluent brine thus joined together is discharged for deaeration into the final stage flash chamber from a distributor provided in the rear chamber thereof. According to another aspect of the invention, the aforesaid deaerator is omitted and the feed sea water which has not been subjected to deaeration is joined to the aforesaid confluent brine and is discharged for deaeration from the distributor.

摘要翻译： 一种多级蒸馏设备，主要由多闪蒸发器组成，多蒸发蒸发器设置有多闪蒸室，其分为热回收段和排热段。 在这种多级闪蒸装置中，上述闪蒸器具有用于对冷海水进行脱气的除气器，用于从含有相对大量种子的盐水中分离的浓缩物，该浓缩盐水从已从 最后阶段闪蒸室和用于获得种子混合盐水的种子混合罐，由此将通过除气器的一部分海水作为进料海水供应到最终级闪蒸室的后室，而 含有相对大量种子并从增稠剂中提取的盐水与从种子混合罐供给的种子混合盐水相连。 因此，这样连接在一起的汇合盐水从设置在其后室中的分配器排出进入最后阶段闪蒸室。 根据本发明的另一方面，省略了上述脱气器，并且没有进行脱气的进料海水与上述汇合盐水接合，并从分配器排出以脱气。

公开(公告)号：US06679106B1

公开(公告)日：2004-01-20

申请号：US09926772

申请日：2002-03-18

申请人： Hironari Abe ,  Toshio Sawa ,  Atsushi Kasahara

发明人： Hironari Abe ,  Toshio Sawa ,  Atsushi Kasahara

IPC分类号： G01B528

CPC分类号： G01N19/02 ,  G01B11/30

摘要： The object of the present invention is to provide a road surface roughness measuring apparatus for measuring the coefficient of dynamic friction and the roughness of the road surface in each direction at a same section where the coefficient of dynamic friction is measured, said apparatus divides the measuring circle on the road surface into a plurality of sections, on which measuring circle the rotary type unit for measuring the coefficient of dynamic friction measures the coefficient of dynamic friction. The road surface roughness measuring apparatus has: a frame (32) having a plurality of legs (31) used for placing the apparatus on a road surface (G); a rotary shaft (45) mounted on the frame (32) and extending vertically; a rotary encoder (44) mounted on the top end of the rotary shaft (45); a rotation plate (50) mounted on the bottom end of the rotary shaft (45); a motor (39) provided with a speed reducing gear and for driving the rotary shaft via gears (41, 41a); and a laser displacement gauge (51) mounted on the rotation plate (50). The laser displacement gauge (51) is disposed in such a way as to measure a road surface roughness along a measuring circle (P) on which the rotary type unit for measuring the coefficient of dynamic friction measures the coefficient of dynamic friction by the rotation of the rotation plate. The measuring circle (P) is divided into a plurality of sections and the road surface roughness for each section (a to h) is calculated based on the signals of the laser displacement gauge (51) and the rotary encoder (44).

摘要翻译： 本发明的目的是提供一种路面粗糙度测量装置，用于在测量动摩擦系数的相同部分处测量动态摩擦系数和路面粗糙度，所述装置将测量 将路面上的圆圈分成多个部分，测量圆上用于测量动摩擦系数的旋转式单元测量动摩擦系数。 路面粗糙度测量装置具有：具有用于将设备放置在路面（G）上的多个腿部（31）的框架（32）; 旋转轴（45），安装在所述框架（32）上并垂直延伸; 安装在所述旋转轴（45）的顶端的旋转编码器（44）; 安装在所述旋转轴（45）的底端的旋转板（50）; 具有减速齿轮并通过齿轮（41,41a）驱动旋转轴的马达（39）; 以及安装在旋转板（50）上的激光位移计（51）。 激光位移计（51）以沿测量圆（P）测量路面粗糙度的方式设置，用于测量动摩擦系数的旋转型单元通过旋转系数测量动摩擦系数 旋转板。 测量圆（P）被分成多个部分，并且基于激光位移计（51）和旋转编码器（44）的信号计算每个部分（a至h）的路面粗糙度。