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    • 1. 发明专利
    • Underwater tester
    • 水下测试仪
    • JP2005351628A
    • 2005-12-22
    • JP2004169288
    • 2004-06-08
    • Hitachi Ltd株式会社日立製作所
    • EBINA YOSHINORITAKAHASHI TOSHIYORIOTSUKA TOSHIHIROKAWASAKI HIROBUMISEYA TORU
    • G21C17/08G21C17/003G21C19/07
    • PROBLEM TO BE SOLVED: To provide an underwater tester for a lining which tests any defects on the lining in water, by remote control from above the water surface.
      SOLUTION: A test container is fitted onto a section to be tested on the lining in the water, an ejector is actuated by a negative pressure generating unit to drain the water in the test container and keep the negative pressure condition in the test container, and a foaming liquid injection unit is actuated to squirt a foaming liquid at the lining face of the test container. The test container is fitted onto the section to be tested on the lining in the water, the ejector is actuated by the negative pressure generating unit to drain the water in the test container and keep the negative pressure condition in the test container, the foaming liquid injection unit is actuated to actuate a hydraulic pressure unit for driving a cylinder, and the foaming liquid is applied to the lining face of the test container.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种用于衬里的水下测试仪,其通过从水面以上的遥控来测试水中衬里的任何缺陷。

      解决方案:将测试容器安装在水中的待测试部分上,由负压发生单元致动喷射器,以排出测试容器中的水并将负压条件保持在测试中 容器,并且启动发泡液体注入单元以在测试容器的衬里面处喷射发泡液体。 将测试容器装在水中的待测试部分上,由负压发生单元驱动喷射器排出测试容器中的水,并将负压条件保持在测试容器中,发泡液体 喷射单元被致动以启动用于驱动气缸的液压单元,并且将发泡液施加到测试容器的衬面。 版权所有(C)2006,JPO&NCIPI

    • 2. 发明专利
    • UNDERWATER INSPECTION DEVICE
    • JP2005030764A
    • 2005-02-03
    • JP2003192539
    • 2003-07-07
    • HITACHI LTD
    • KAWASAKI HIROBUMIOTSUKA TOSHIHIROTAKAHASHI TOSHIYORISEYA TORU
    • G21C17/08G21C17/003G21C19/07
    • PROBLEM TO BE SOLVED: To provide an underwater inspection device for inspecting in the water sealability of a base metal and a weld zone of a lining material without draining water in an underwater storage container for a spent fuel or the like. SOLUTION: An inspection box of this underwater inspection device has a seal packing, an ejector connection pipe and a negative pressure line on an opening end face. The ejector connection pipe is constituted of a high-pressure water supply pump and a supply source line through a water jet ejector, a water supply line and a water supply quantity adjusting valve. The water in the inspection box is sucked by the high-pressure water supplied from the water supply line on a place at the depth of water of 10m or more, and the inspection box is sucked onto the wall surface by a differential pressure with the pressure of pool water by depressurizing the inside of the inspection box. Leak water in a leak detection system provided on the lining type container back side is stopped by holding the inspection box in the sucked state onto an inspection object part in this way. Hereby, the existence of a weld zone penetration defect in the range of the lining material on an installation part is revealed by maintaining the inspection box. COPYRIGHT: (C)2005,JPO&NCIPI
    • 4. 发明专利
    • Underwater testing device and underwater testing method
    • 水下试验装置和水下试验方法
    • JP2006119080A
    • 2006-05-11
    • JP2004309461
    • 2004-10-25
    • Hitachi Ltd株式会社日立製作所
    • KAWASAKI HIROBUMINANBA SHIGERUOTSUKA TOSHIHIROSEYA TORU
    • G01M3/06B08B3/12
    • B63C11/52
    • PROBLEM TO BE SOLVED: To perform underwater testing with a small volume testing box provided with a means for surely removing clogging at defects without diving, even when clogging at penetration defects of such as underwater parent material and welded part.
      SOLUTION: The underwater testing device is provided with: the testing box 1, containing ultrasonic vibrator 76 inside and having a seal packing on the opening end surface 45 contacting an object part to be tested of liner 30; a water jet ejector 29 for draining inner water of the testing box 1 up to a state of not exposing the ultrasonic vibrator 76; a negative pressure generator 11 for making the inside of the testing box 1 negative pressure and supplying the water jet ejector 29 with jet water; and ultrasonic oscillator 77 for cleaning the object part to be tested of the liner 30 by driving the ultrasonic vibrator 76, in a state of not being exposed to the internal water of the test box 1, wherein the part to be tested of the liner 30 is cleaned prior to defect test.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:即使在诸如水下母材和焊接部件的穿透缺陷处堵塞时,也可以用小体积的试验箱进行水下试验,该试验箱具有在没有潜水的情况下确定地去除缺陷堵塞的装置。 解决方案:水下测试装置设有:检测箱1,其内部包含超声波振动器76,并且在开口端表面45上具有接触衬套30的被测试物体部分的密封垫片; 用于将测试箱1的内部水排放到不暴露超声波振动器76的状态的喷水喷射器29; 用于使检测箱1的内部成为负压并将喷射喷射器29供给喷射水的负压发生器11; 以及超声波振荡器77,用于在不暴露于测试箱1的内部水的状态下通过驱动超声波振动器76来清洁衬套30的待测试部件,其中衬套30的被测试部件 在缺陷测试之前进行清洁。 版权所有(C)2006,JPO&NCIPI
    • 5. 发明专利
    • WITHDRAWAL OF FUEL ROD
    • JPS6450995A
    • 1989-02-27
    • JP20635287
    • 1987-08-21
    • HITACHI LTDHITACHI ENG CO LTDHITACHI SERVICE ENGHITACHI NUCLEAR ENG
    • SEYA TORUTOKUNAGA KENSUKEGOTO FUMIHIROSEYA SATOSHI
    • G21C19/33
    • PURPOSE:To enable an easier withdrawal of fuel rod, by giving an impact energy by a spring or pneumatic pressure directly to a lower end plug of a fuel rod and by lifting up the fuel rod upwardly to push the fuel rod up from its lower most part and to release it from sticking with other parts. CONSTITUTION:By moving and setting a fuel assembly to and in a fuel channel handling machine 11, by setting previously an angle of a nail 15 of a pneumatic driven fuel rod withdrawal jig 14 at a corresponding position of a fuel rod to be withdrawn, by lifting the jig 14 by jibcrane and by attaching setting guide 16 to a lower receiving table 12 of the machine 11, the nail 15 can be set to a lower part of a lower end plug of fuel rod to be withdrawn. Consequently, air from a baby compressor 17 is led to a piston 20 of a cylinder, a notch 21 is lifted up by an energy of a spring 23 with decoupling of the notch 21 and a movement of the notch 21 is transferred to a rod 24 as an impact energy and finally the nail 15 pushes up the lower end plug of the fuel rod. The lifted-up fuel rod is grasped by a rod grapple and the rod is withdrawn from the fuel assembly with the descending channel handling machine 11 after removal of the withdrawal jig.