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    • 1. 发明专利
    • Corrosion inhibitor injection method
    • 腐蚀抑制剂注射方法
    • JP2013064170A
    • 2013-04-11
    • JP2011202239
    • 2011-09-15
    • Toshiba Corp株式会社東芝
    • OKAMURA MASAHITOOSATO TETSUOMURAKAMI KAZUOYAMAMOTO SEIJIARAI HIROYUKIURATA HIDEHIROHIRASAWA HAJIMESHIBAZAKI OSAMUNEGISHI KOJI
    • C23F11/18G21D1/00G21D3/08
    • C23F11/08C23F11/18C23F11/185C23F15/00G21C17/0225G21D3/08Y02E30/40
    • PROBLEM TO BE SOLVED: To provide a corrosion inhibitor injection method that accelerates a deposition rate of an anti-corrosive agent to a surface of a nuclear reactor to shorten a time for implementing the injection of the anti-corrosive agent.SOLUTION: The corrosion inhibitor injection method includes steps of: injecting an oxidant 25 and an anti-corrosive agent-pH adjustment agent composite body 10 comprising the anti-corrosive agent 11 and a pH adjustment agent 12 adsorbed to the surface of the anti-corrosive agent 11 into high-temperature water 60 contacting with a surface of a metal structural material 65; and irradiating the high-temperature water with a radiation 75 or ultraviolet rays. In the corrosion inhibitor injection method, the anti-corrosive agent 11 of the anti-corrosive agent-pH adjustment agent composite body 10 has an active spot on the surface thereof where the pH adjustment agent 12 reacts with the oxidant 25, and the pH adjustment agent 12 existing on the surface of the anti-corrosive agent 11 of the anti-corrosive agent-pH adjustment agent composite body 10 and/or in the high-temperature water 60 is oxidized by the oxidant 25 by irradiation with the radiation 75 or the ultraviolet rays to change the pH adjustment force of the pH adjustment agent 12, and the adhesion of the anti-corrosive agent 11 to the metal structural material 65 is accelerated by shifting the pH of the high-temperature water 60 to a neutral side.
    • 要解决的问题:提供一种缓蚀剂注入方法,其将抗腐蚀剂的沉积速率加速到核反应堆的表面,以缩短实施防腐剂注入的时间。 解决方案:缓蚀剂注入方法包括以下步骤:注入氧化剂25和防腐剂 - pH调节剂复合体10,其包含吸附在该表面上的防腐剂11和pH调节剂12 防腐剂11与金属结构材料65的表面接触的高温水60; 并用辐射75或紫外线照射高温水。 在缓蚀剂注入方法中,防腐蚀剂 - pH调节剂复合体10的防腐剂11在pH调节剂12与氧化剂25反应的表面上具有活性斑点,并且pH调节 防腐剂 - pH调节剂复合体10和/或高温水60中的抗腐蚀剂11的表面上存在的试剂12被氧化剂25通过辐射75或 改变pH调节剂12的pH调节力的紫外线,并且通过将高温水60的pH转变为中性侧来加速抗腐蚀剂11与金属结构材料65的粘附。 版权所有(C)2013,JPO&INPIT
    • 4. 发明专利
    • Nuclear power plant
    • 核电站
    • JP2009047704A
    • 2009-03-05
    • JP2008262887
    • 2008-10-09
    • Toshiba Corp株式会社東芝
    • HENMI YUKIOYAMAZAKI KENJIHIRASAWA HAJIME
    • G21C19/307G21C3/30G21C3/34G21C5/00G21D1/00
    • Y02E30/40
    • PROBLEM TO BE SOLVED: To provide a nuclear power plant that greatly reduces the concentration of cobalt radiation by ions and particulate substances contained in furnace water and reduces the amount of cobalt radiation that is transferred onto the outer surface of a reactor core.
      SOLUTION: In a nuclear power plant 100 according to the present invention, pipes and apparatuses disposed in a reactor primary system (e.g., a water system 1) are made of stainless steel, and reactor feedwater heaters 12 and 13 and a fuel bundle are made of a nickel-based alloy subjected to preliminary oxidation treatment. The nuclear power plant 100 has: the first iron-removal means for removing particulate and ionic iron from low-temperature condensate of system water by a filter and an ion-exchange resin; and the second iron-removal means for mainly removing particulate iron from mid-to-high-temperature feedwater that is higher in temperature than the condensate, the second iron-removal means having a filter made of at least one selected from the group consisting of a heat-resistant resin, ceramic, an element that forms ceramic by oxidation, carbonization, and nitriding, and a carbon material.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种核电站,其大大降低了由离子和包含在炉水中的颗粒物质引起的钴辐射的浓度,并减少了转移到反应堆堆芯的外表面上的钴辐射的量。 解决方案:在根据本发明的核电站100中,设置在反应器主系统(例如,水系统1)中的管道和设备由不锈钢制成,反应堆给水加热器12和13以及燃料 束由经过预氧化处理的镍基合金制成。 核电站100具有:通过过滤器和离子交换树脂从体系水的低温冷凝物除去微粒和离子铁的第一除铁装置; 以及第二铁去除装置,主要从中高温给水中除去比冷凝物温度高的颗粒铁,第二除铁装置具有由选自以下的至少一种制成的过滤器: 耐热树脂,陶瓷,通过氧化,碳化和氮化形成陶瓷的元素和碳材料。 版权所有(C)2009,JPO&INPIT
    • 5. 发明专利
    • Method of repairing reactor structure, and reactor structure
    • 修复反应器结构和反应器结构的方法
    • JP2006308326A
    • 2006-11-09
    • JP2005128313
    • 2005-04-26
    • Toshiba Corp株式会社東芝
    • ITO KIICHISAITO TOSHIYUKIITO MIKIROHIRASAWA HAJIMEMATSUNAGA KEIJISUMIYA RIE
    • G21C19/02B23K26/20G21D1/00
    • Y02E30/40
    • PROBLEM TO BE SOLVED: To provide a method of repairing a reactor structure, and the reactor structure, capable of suppressing progression of a crack-shaped defect by suppressing corrosion of a metal material constituting the structure inside a repaired crack, when a crack-shaped defect part is generated on the metal surface of the reactor structure and its repair welding is performed. SOLUTION: In this repair method of the reactor structure, which is a repair method of the reactor structure having the metal material on whose surface the crack defect is generated, first of all, a noble metal material is provided on the crack defect surface. Then, the noble metal material is coated with a coating member, and the coating member is fixed to the reactor structure. Thus, the noble metal material and the crack defect are isolated from an external environment. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种修复反应器结构的方法和反应器结构,其能够通过抑制构成修复裂纹内的结构的金属材料的腐蚀来抑制裂纹形状的缺陷的进展, 在反应堆结构的金属表面产生裂纹状缺陷部分,进行修补焊接。 解决方案:在反应器结构的这种修复方法中,其是具有在其表面产生裂纹缺陷的金属材料的反应器结构的修复方法,首先,在裂纹缺陷上提供贵金属材料 表面。 然后,将贵金属材料涂覆在涂覆部件上,将涂覆部件固定在反应器结构上。 因此,贵金属材料和裂纹缺陷与外部环境隔离。 版权所有(C)2007,JPO&INPIT
    • 9. 发明专利
    • Radioactive matter adhesion inhibiting method
    • 放射性物质粘合抑制方法
    • JP2012145378A
    • 2012-08-02
    • JP2011002428
    • 2011-01-07
    • Toshiba Corp株式会社東芝
    • YAMAMOTO SEIJIYAITA YUMIHIRASAWA HAJIME
    • G21D1/00G21D3/08
    • Y02E30/40
    • PROBLEM TO BE SOLVED: To provide a radioactive matter adhesion inhibiting method to inhibit radioactive matter from being taken into an oxide film, which is formed on the surface of a metal material, even when a reactor is constituted of a metal material containing an extremely small amount of chrome.SOLUTION: In a nuclear power plant including a light-water cooling reactor, the radioactive matter adhesion inhibiting method of the invention inhibits radioactive matter from being taken into an oxide film when the oxide film containing an oxidized material of a metal element, which is a primary element of the metal material constituting the plant and which comes into contact with the cooling water, is formed on the surface of the metal material. The metal material is an iron alloy including Cr of 1 mass% or less. A material for reducing the corrosion potential of the metal material in the cooling water is adhered to the metal material or to the surface of the oxide film of the metal material.
    • 待解决的问题:为了提供放射性物质附着抑制方法,以抑制放射性物质被吸收到形成在金属材料的表面上的氧化膜中,即使当反应器由含有 极少量的铬。 解决方案:在包括轻水冷却反应器的核电站中,当含有金属元素的氧化物质的氧化物膜时,本发明的放射性物质粘附抑制方法抑制放射性物质被吸入氧化物膜, 在金属材料的表面上形成作为构成植物的金属材料与冷却水接触的主要元素。 金属材料是含有1质量%以下的Cr的铁合金。 用于降低金属材料在冷却水中的腐蚀电位的材料被粘附到金属材料或金属材料的氧化物膜的表面上。 版权所有(C)2012,JPO&INPIT