公开(公告)号：US07086353B2

公开(公告)日：2006-08-08

申请号：US10900521

申请日：2004-07-28

申请人： Kwon Sang Hwang ,  Hyung Jin Sung ,  Woo Tae Jeong ,  Sung Yull Hong

发明人： Kwon Sang Hwang ,  Hyung Jin Sung ,  Woo Tae Jeong ,  Sung Yull Hong

IPC分类号： F22B37/48

CPC分类号： F22B37/003

摘要： Disclosed is a lance system for inter-tube inspecting and lancing as well as barrel spraying of heat transfer tubes of a steam generator in a nuclear power plant, so that foreign substances piled up around heat transfer tubes in the steam generator are removed using high-pressure water. The lance system includes a rigid guide support rail positioned above a Blow Down Lane (BDL) at the center of the steam generator, a locomotion box including a motor drive unit for inducing a rectilinear motion of a lance body and a motor drive unit for inducing a rotational motion of the lance body centering on a horizontal axis, the lance body including a circular barrel including a motor drive unit for vertically erecting or horizontally laying down a multistage circular pole assembly, and a flat plate provided with linear passages for passing high-pressure water hoses, an optical cable and control rods therethrough, a circular drum assembly for stably connecting the high-pressure water hoses, the optical cable and the control rods, and the multistage circular pole assembly being extensible and contractible by the movement of the control rods obtained by engaging teeth of a toothed belt unit, driven by a motor and positioned in the circular barrel, with gear teeth of the control rods, and two nozzle blocks, for barrel spraying, provided with barrel spray nozzles fixedly assembled therewith, symmetrically fixed to the inner surface of the circular barrel, wherein the multistage circular pole assembly is vertically erected in the operation of inter-tube lancing and inspecting, in which the lance system approaches inner parts of the heat transfer tubes and sprays the high-pressure water thereto, and is maintained in a horizontally laid-down position in the operation of barrel spraying.

摘要翻译： 公开了一种用于管间检查和穿刺的枪管系统以及在核电站中蒸汽发生器的传热管的桶喷射，使得在蒸汽发生器中的传热管周围堆积的异物被除去， 压力水。 喷枪系统包括位于蒸汽发生器中心的吹气道（BDL）上方的刚性导轨支撑轨道，包括用于引导喷枪主体的直线运动的马达驱动单元和用于引导的马达驱动单元的运动箱 所述喷枪体以水平轴为中心的旋转运动，所述喷枪主体包括圆筒，所述圆筒包括用于垂直竖立或水平放置多级圆极组件的马达驱动单元，以及设置有用于使高速圆柱形的通道的直线通道的平板， 压力水软管，光缆和控制棒，用于稳定地连接高压水软管，光缆和控制棒的圆形鼓组件，以及多级圆形极组件，其通过控制器的移动而是可伸缩的 通过将由马达驱动并定位在圆筒中的齿形带单元的齿啮合而获得的杆与控制杆的齿轮齿 s和两个喷嘴块，用于桶喷射，设置有与其固定组装的桶形喷嘴，对称地固定到圆筒的内表面，其中多级圆极组件在管间穿刺和检查操作中垂直竖立 其中喷枪系统接近传热管的内部部分并喷射高压水，并且在喷枪操作中保持水平放置位置。