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    • 2. 发明专利
    • Method of and device for heat treatment of stainless steel pipe
    • 不锈钢管热处理方法及装置
    • JP2011225945A
    • 2011-11-10
    • JP2010097608
    • 2010-04-21
    • Hitachi-Ge Nuclear Energy Ltd日立Geニュークリア・エナジー株式会社
    • FUKUDA YUKAORITANI NAOHIKOAOIKE SATOSHI
    • C21D9/08G21D1/00
    • Y02E30/40
    • PROBLEM TO BE SOLVED: To provide a method of and a device for heat treatment of a stainless steel pipe, including: measuring in advance the amount of coolant just after starting of supply to the inside of a pipe residual stress relief unit in an aerial state and controlling the supply of the coolant.SOLUTION: A circulation loop of coolant is formed by a water storage tank, a water feed pump, a flowmeter, pipes, and a channel switching device. The amount of circulating coolant is measured beforehand by the flowmeter in the circulation loop, and controlled to a predetermined amount or more. A channel switching device performs switching so that the supply amount of coolant just after starting of the supply to the residual stress relief unit of the stainless steel pipe whose inside is in an areal state is controlled so as to attain relief of residual stress of the stainless steel pipe by the reliable heat treatment.
    • 要解决的问题:提供一种不锈钢管的热处理方法和装置,其特征在于,包括:在开始供给到管道残余应力释放单元的内部之后,预先测量冷却剂的量 空中状态并控制冷却剂的供应。

      解决方案:冷却液的循环回路由储水箱,给水泵,流量计,管道和通道切换装置构成。 循环冷却液的量由循环回路中的流量计预先测量,并被控制到一定量以上。 通道切换装置执行切换,使得刚刚开始供给到内部处于面状态的不锈钢管的残余应力释放单元之后的冷却剂的供给量被控制,以便消除不锈钢的残余应力 钢管通过可靠的热处理。 版权所有(C)2012,JPO&INPIT

    • 4. 发明专利
    • Control rod for boiling water reactor
    • 锅炉水反应堆控制系统
    • JP2011080985A
    • 2011-04-21
    • JP2010202674
    • 2010-09-10
    • Hitachi-Ge Nuclear Energy Ltd日立Geニュークリア・エナジー株式会社
    • KAWASHIMA NORIOOIZUMI HIROBUMIAOIKE SATOSHI
    • G21C7/113
    • G21C7/113Y02E30/31Y02E30/39
    • PROBLEM TO BE SOLVED: To provide a control rod for a boiling water reactor, which achieves the improvement in its insertability in case of an earthquake and its life extension as well. SOLUTION: A structural element 103 where a control rod has four blades a', b', c' and d' orthogonal to each other is provided. The four blades have sections 11A, 11B, 11C and 11D filled with neutron absorbers to store them. The structural element 103 has: a first region which has a first cross section forming a first cruciform integral cross section of the four blades coupled to each other in the axial direction of the control rod; a second region which has a second cross section including a separated cross section of each of the four blades; and a third region which has a third cross section including a separated cross section of each of two of the four blades placed orthogonally to the second integral cross section of the two other blades among the four ones coupled by laying them out in the opposite direction and the two other coupled blades. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种用于沸水反应器的控制棒,其在地震和其寿命延长的情况下实现其可插入性的提高。 解决方案:提供了一种结构元件103,其中控制杆具有彼此正交的四个叶片a',b',c'和d'。 四个叶片具有填充有中子吸收体以存储它们的部分11A,11B,11C和11D。 结构元件103具有:第一区域,其具有形成在控制棒的轴向上彼此联接的四个叶片的第一十字形整体横截面的第一横截面; 第二区域,其具有包括四个叶片中的每一个的分离的横截面的第二横截面; 以及第三区域,其具有第三横截面,所述第三横截面包括四个叶片中的两个叶片中的两个的两个的分离横截面,其中四个叶片中的两个与两个其它叶片的第二整体横截面垂直放置,所述四个叶片通过沿相反的方向放置而耦合, 另外两个耦合的刀片。 版权所有(C)2011,JPO&INPIT
    • 5. 发明专利
    • Metallic structure investigation method and device in reactor
    • 金属结构调查方法和反应器装置
    • JP2011013128A
    • 2011-01-20
    • JP2009158371
    • 2009-07-03
    • Hitachi-Ge Nuclear Energy Ltd日立Geニュークリア・エナジー株式会社
    • KUROSAWA KOICHIOMORI SHINYAAOIKE SATOSHISUGANO AKIHIRO
    • G21C17/003
    • PROBLEM TO BE SOLVED: To provide a metallic structure investigation method capable of preventing liquid leakage and immersion into an inspection space even to a complicated shape object having a curvature surface in various three-dimensional shapes with CRDs standing in large numbers such as a lower part of a reactor pressure vessel, and on the other hand, when a crack is discovered by any chance on a weld zone of the reactor pressure vessel or a reactor internal structure, it is required to be investigated whether the crack is caused by a stress corrosion crack along a grain boundary structure or not, and therefor, a replica for observing a metallic structure and the state of the cracked surface is required to be collected.SOLUTION: When forming a replica collection space, a filling curing material is injected into the periphery of the space, and a seal tracing the shape of an inspection surface is formed by the filling curing material to thereby acquire a seal shape tracing the shape of the inspection surface.
    • 要解决的问题:提供一种能够防止液体泄漏并浸入检查空间的金属结构调查方法,即使是具有各种三维形状的曲率表面的复杂形状物体,其中大量数字如下, 的反应堆压力容器,另一方面,当在反应堆压力容器的焊接区域或反应堆内部结构上发现任何机会发生裂纹时,需要研究裂纹是否由应力腐蚀引起 因此,需要收集用于观察金属结构的复制品和裂纹表面的状态。解决方案:当形成复制收集空间时,将填充固化材料注入外围 并且通过填充固化材料形成跟踪检查表面形状的密封件,从而获得跟踪形状的密封形状 的检查面。
    • 6. 发明专利
    • Crack diagnostic method and crack diagnostic device for reactor structure
    • 用于反应器结构的裂纹诊断方法和裂纹诊断装置
    • JP2012063182A
    • 2012-03-29
    • JP2010206208
    • 2010-09-15
    • Hitachi-Ge Nuclear Energy Ltd日立Geニュークリア・エナジー株式会社
    • AOIKE SATOSHIITO TAKASHITSURUKI MASAKIWATANABE YOSHIOMABUCHI YASUHIROKUROSAWA KOICHI
    • G21C17/00G21C17/003
    • PROBLEM TO BE SOLVED: To provide a crack diagnostic method of a reactor structure for achieving miniaturization, and for accurately diagnosing the existence of a crack even when an inspection object site exists at a narrow part.SOLUTION: An excitation device 16 is mounted on reactor core spray piping 4 installed in a nuclear reactor pressure container 1, and welded in a nuclear reactor nozzle by using a fixing arm 18 and a movable arm 20. A weight 24 is mounted on a rotary shaft 26 at a position which is different from the position of the center of gravity of the weight 24. The reactor core spray piping 4 is excited due to repeated loads by driving the motor 25 to rotate the weight 24. An accelerator meter 29 measures the characteristic frequency of the excited reactor core spray piping 4, and the characteristic frequency is input to a signal processor 35. The signal processor 35 compares the measured characteristic frequency with the characteristic frequency of the reactor core spray piping 4 in a state that any crack does not exist at the inspection object site, and diagnoses the presence/absence of the crack at the inspection object site.
    • 要解决的问题:为了提供用于实现小型化的反应器结构的裂纹诊断方法,并且即使当检查对象部位存在于狭窄部分时也能够精确地诊断裂缝的存在。 解决方案:激励装置16安装在安装在核反应堆压力容器1中的反应堆芯喷射管道4上,并通过使用固定臂18和可动臂20将其焊接在核反应堆喷嘴中。重物24安装 在与重量24的重心位置不同的位置处的旋转轴26上。由于通过驱动马达25以使重物24旋转而反复进行负载,反应堆堆芯喷射管道4被激发。加速器计 29测量被激发的反应堆堆芯喷射管道4的特征频率,并且将特征频率输入到信号处理器35.信号处理器35将测得的特征频率与反应堆堆芯喷射管道4的特征频率进行比较,处于 在检查对象部位不存在任何裂纹,并在检查对象部位诊断是否存在裂缝。 版权所有(C)2012,JPO&INPIT
    • 7. 发明专利
    • Heat-treatment method for piping
    • 用于管道的热处理方法
    • JP2011219815A
    • 2011-11-04
    • JP2010089970
    • 2010-04-09
    • Hitachi-Ge Nuclear Energy Ltd日立Geニュークリア・エナジー株式会社
    • OKIDO SHINOBUORITANI NAOHIKOFUKUDA YUKAAOIKE SATOSHITSURUKI MASAKI
    • C21D9/08C21D1/30C21D9/50
    • PROBLEM TO BE SOLVED: To provide a heat-treatment method with which a compressed residual stress part can effectively be formed on the inner surface of a piping in a short time without lowering a strength property of the material.SOLUTION: The heat-treatment method for piping which cools the inner surface of the piping with refrigerant after heating the targeted part for heat-treatment of the piping is provided with a step 24 for heating the targeted part for heat-treatment so as to attain the aimed temperature by using a heating device; a step 45 for cooling the inner surface of the piping by flowing the refrigerant into the inner part of the piping after the target part for heat-treatment attains the aimed temperature; a step 26 for determingng the cooling speed on the outer surface of the piping from the temperature variation on the outer surface of the piping when the inner surface of the piping is cooled; and a step 27 for controlling so that the cooling speed may become equal to or higher than the prescribed speed which is predetermined by repeating the heating step 24 and the cooling step 25 while changing at least either one of the aimed temperature or the flowing rate of the refrigerant when the cooling speed is lower than the prescribed cooling speed which is predetermined.
    • 要解决的问题:提供一种能够在短时间内有效地在管道内表面上形成压缩残余应力部分而不降低材料的强度特性的热处理方法。 解决方案:在加热用于管道热处理的目标部件之后,用制冷剂冷却管道内表面的管道的热处理方法设置有用于加热目标部件进行热处理的步骤24 通过使用加热装置达到目标温度; 步骤45,用于在热处理对象部分达到目标温度之后,通过使制冷剂流入管道的内部来冷却管道的内表面; 当管道的内表面被冷却时,用于从管道外表面的温度变化确定管道外表面上的冷却速度的步骤26; 以及用于进行控制的步骤27,使得冷却速度可以变为等于或高于通过重复加热步骤24和冷却步骤25预定的规定速度,同时改变目标温度或流速 当冷却速度低于预定的规定冷却速度时的制冷剂。 版权所有(C)2012,JPO&INPIT