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    • 21. 发明授权
    • Radioactive decontamination method using methylene chloride
    • 使用甲基氯化物的放射性去除方法
    • US5126077A
    • 1992-06-30
    • US671941
    • 1991-03-19
    • Kenji MorikawaToshio TenjinYasuo ShimizuAkira Doi
    • Kenji MorikawaToshio TenjinYasuo ShimizuAkira Doi
    • G21F9/28G21F9/00G21F9/30
    • G21F9/30G21F9/001G21F9/005
    • A radioactive decontamination method for decontaminating a radioactive-contaminated object by using methylene chloride in place of conventionally used hydrocarbon fluoride or perchloroethylene. The radioactive-contaminated object is impacted by methylene chloride solution. Before the impacting, a preparatory step is executed as required in which radioactive contaminant, which is usually radioactive-contaminated epoxy-resin paint layer on a part used in a nuclear facility, is impregnated with methylene chloride solution so as to swell, thus facilitating exfoliation of the contaminant from the object. The methylene chloride solution is filtered and distilled so as to be decontaminated and subjected to a repeated use for impacting the radioactive-contaminated object. Methylene chloride solution exhibits much greater radioactive decontamination effect than solutions of conventional decontamination mediums such as hydrocarbon fluoride and perchloroethylene and is not so polluting as the known decontamination mediums. The decontamination of methylene chloride itself, which is effected through the distillation, can be executed with much smaller electrical power consumption as compared with the case where perchloroethylene is used.
    • 通过使用二氯甲烷代替常规使用的氟化烃或全氯乙烯来对放射性污染物体进行净化的放射性净化方法。 放射性污染的物体受到二氯甲烷溶液的影响。 在冲击之前,根据需要执行准备步骤,其中在核设施中使用的部件上通常是放射性污染的环氧树脂漆层的放射性污染物用二氯甲烷溶液浸渍以膨胀,从而有利于剥离 的污染物。 将二氯甲烷溶液过滤并蒸馏,以便进行净化,并经过重复使用以冲击放射性污染的物体。 二氯甲烷溶液比常规去污介质如氟化烃和全氯乙烯的溶液表现出更大的放射性去污效果,并且不像已知的去污介质那样污染。 与使用全氯乙烯的情况相比,通过蒸馏实现的二氯甲烷本身的净化可以以更小的电功率消耗来执行。
    • 25. 发明申请
    • Rocking Actuator and Laser Machining Apparatus
    • 摇动执行器和激光加工设备
    • US20080036309A1
    • 2008-02-14
    • US11833695
    • 2007-08-03
    • Souichi ToyamaKounosuke KitamuraAkira DoiHiromu HiraiKenta SekiYoshiaki Kano
    • Souichi ToyamaKounosuke KitamuraAkira DoiHiromu HiraiKenta SekiYoshiaki Kano
    • H02K33/00
    • H02K26/00H02K33/16
    • A rocking actuator and a laser machining apparatus which can suppress a temperature rise of a permanent magnet in a moving-magnet actuator. Even when a steerable mirror is positioned by rapid and continuous motions, highly reliable machining can be performed without degrading machining throughput or hole position accuracy. A cooling jacket for cooling a casing and heat transfer units brought into contact with a coil and the casing are provided. Heat generated in the coil is introduced to the casing through the heat transfer bypass units. Thus, the temperature rise of the coil is suppressed. Radial grooves are provided in the permanent magnet opposed to the coil so as to prevent an eddy current from appearing therein. Groove depth is made not smaller than skin depth expressed by a function of volume resistivity and permeability of the permanent magnet and a fundamental frequency of a current applied to the coil.
    • 可以抑制移动磁体致动器中的永磁体的温度升高的摆动致动器和激光加工装置。 即使通过快速连续的运动来定位可转向的镜子,也可以在不降低加工吞吐量或孔位置精度的情况下执行高度可靠的加工。 提供了用于冷却壳体的冷却套和与线圈和壳体接触的传热单元。 在线圈中产生的热量通过传热旁路单元引入壳体。 因此,线圈的温度上升被抑制。 在与线圈相对的永磁体中设置有径向槽,以防止其中出现涡流。 凹槽深度不小于由永磁体的体积电阻率和磁导率函数表示的皮肤深度以及施加到线圈的电流的基频。