公开(公告)号：US20120216382A1

公开(公告)日：2012-08-30

申请号：US13367390

申请日：2012-02-07

申请人： Masahiro HIRATSUKA ,  Minoru OOTAKA ,  Masahiro KOIKE ,  Hiroyuki NAKANO ,  Akira NISHIMIZU

发明人： Masahiro HIRATSUKA ,  Minoru OOTAKA ,  Masahiro KOIKE ,  Hiroyuki NAKANO ,  Akira NISHIMIZU

IPC分类号： B23P11/00

CPC分类号： G21C21/00 ,  F04F5/04 ,  G21C13/02 ,  G21C15/25 ,  Y02E30/40 ,  Y10T29/49764 ,  Y10T29/49771

摘要： A method of installing a jet pump beam includes, disposing an inlet mixer having one end portion inserted to a diffuser provided in a reactor pressure vessel and an other end portion communicated with a riser pipe disposed in the reactor pressure vessel between a pair of projecting portions of a transition piece provided to the riser pipe, separately inserting both end portions of a jet pump beam disposed above the inlet mixer into a groove formed in each of the pair of projecting portions, arching the jet pump beam by moving a center portion of the jet pump beam upward, pushing a screw member engaged with the arched jet pump beam against the inlet mixer, and measuring deflection amount of the arched jet pump beam when the screw member is being pushed against the inlet mixer.

摘要翻译： 一种安装喷射泵梁的方法包括：设置入口混合器，该入口混合器具有一个端部插入到设置在反应堆压力容器中的扩散器中，另一端部与设置在反应堆压力容器中的提升管连通在一对突出部分 设置在提升管上的过渡件，将设置在入口混合器上方的喷射泵梁的两个端部分别插入形成在一对突出部分中的每一个中的槽中，通过移动该喷射泵梁的中心部分 喷射泵向上推动，将与拱形喷射泵梁接合的螺钉构件推向入口混合器，并且当螺钉构件被推入入口混合器时测量拱形喷射泵梁的偏转量。

公开(公告)号：US20120281800A1

公开(公告)日：2012-11-08

申请号：US13460984

申请日：2012-05-01

申请人： Atsushi BABA ,  Yoshinori MUSHA ,  Masahiro HIRATSUKA ,  Minoru OOTAKA ,  Masahiro KOIKE

发明人： Atsushi BABA ,  Yoshinori MUSHA ,  Masahiro HIRATSUKA ,  Minoru OOTAKA ,  Masahiro KOIKE

IPC分类号： G21C17/00

CPC分类号： G01S7/521 ,  G01S7/539 ,  G01S15/88 ,  G21C15/25 ,  G21C17/017 ,  Y02E30/40

摘要： A jet pump beam (hereinafter, referred to as a beam) is fitted into a pair of projecting portions installed to a transition piece, and after the beam is arched, a beam bolt engaged with the beam is tightened. An end of the beam bolt comes in contact with a top surface of an insert member fitted into an elbow disposed between the pair of projecting portions. An ultrasonic sensor head is fixed to the beam bolt, and ultrasonic waves are sent to the beam bolt from the ultrasonic sensor in the ultrasonic sensor head. An ultrasonic measuring apparatus obtains echo intensity of each of reflected waves generated at the end of the beam bolt and a bottom surface of the insert member, and based on the echo intensities, an echo intensity ratio R is calculated. The installed state of the beam is checked using the echo intensity ratio R.

摘要翻译： 将喷射泵梁（以下称为梁）装配到安装在过渡件上的一对突出部分中，并且在梁被拱形之后，与梁接合的梁螺栓被拧紧。 梁螺栓的端部与安装在设置在一对突出部之间的弯头中的插入件的顶面接触。 超声波传感器头固定在梁螺栓上，超声波从超声波传感器头中的超声波传感器发送到梁螺栓。 超声波测量装置获得在梁螺栓的端部和插入构件的底面处产生的每个反射波的回波强度，并且基于回波强度，计算回波强度比R. 使用回波强度比R检查光束的安装状态