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    • 3. 发明专利
    • Draft tube of hydraulic machine
    • 液压机械管
    • JP2009167893A
    • 2009-07-30
    • JP2008006363
    • 2008-01-16
    • Hitachi Ltd株式会社日立製作所
    • SHINTANI KENJINOMOTO SATORUTANI KIYOTO
    • F03B11/00F03B3/18
    • F03B3/18F03B3/06F03B11/02F05B2240/122F05B2250/11F05B2250/21F05B2250/324F05B2250/502Y02E10/223Y02E10/226Y02E60/17
    • PROBLEM TO BE SOLVED: To provide a draft tube of a hydraulic machine capable of reducing loss caused in the draft tube by inhibiting the formation of a hose-shoe vortex that may be formed at a connecting part between an upstream end of a pier and a draft tube inner wall.
      SOLUTION: A straightening member 30 is provided for inhibiting the formation of stagnation on a upstream side of the connecting part between the upstream end 4 of the pier 3 and the inner wall of the draft tube 2. Preferably, the straightening member 30 is formed so that, in a plane including a section of the pier as viewed in a lateral direction of the draft tube, an angle formed between the upstream end of the pier and an upper surface of the straightening member is 90 degrees or larger and that when the maximum thickness of the pier is represented as D, a length from the draft tube inner wall to the surface of the straightening member as measured along the upstream end of the pier is 0.1D or longer.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种液压机的引流管,其能够通过抑制形成软管靴涡流来减少引流管中的损失,所述软管靴涡流可形成在上游端的连接部分 码头和引流管内壁。 解决方案:设置矫直构件30,用于抑制在墩3的上游端4与引流管2的内壁之间的连接部的上游侧形成停滞。优选地,矫直构件30 形成为使得在包括沿着引流管的横向方向观察的码头部分的平面中,在墩的上游端和矫正构件的上表面之间形成的角度为90度以上,并且 当墩的最大厚度表示为D时,沿着墩的上游端测量的从引流管内壁到矫直构件表面的长度为0.1D以上。 版权所有(C)2009,JPO&INPIT
    • 7. 发明专利
    • Water wheel impeller type power generation device
    • 水轮叶轮型发电装置
    • JP2010151117A
    • 2010-07-08
    • JP2009104591
    • 2009-04-23
    • Nippon System Kikaku Kk日本システム企画株式会社
    • KUMANO KATSUYUKI
    • F03B7/00F03B3/12F03B13/10
    • F03B7/00F03B17/063F03B17/065F05B2250/323F05B2250/324F05B2250/70Y02E10/22Y02E10/223Y02E10/28
    • PROBLEM TO BE SOLVED: To surely erect a vane plate from a rotation body on a forward movement side and to surely push down the vane plate to the rotation body side on a backward movement side. SOLUTION: A fluid passage frame body 21 is provided above the rotation body 10 so as to form a fluid passage 20, and the vane 15 is turnably arranged on the rotation body 10. A fluid receiving part 15a and a stopper part 15b shorter than the fluid receiving part 15a are formed in an L shape, and the stopper part 15b is arranged at a side where the fluid receiving part 15a receives a fluid pressure of the fluid passage 20 so as to maintain erection of the fluid receiving part 15a. On the rotation body 10, a vane erecting flow passage pipe 30 having one end 30a formed in a larger diameter than the other end 30b is provided. At an exit side of the fluid passage 20, an inclination plate 31 and a vane falling flow passage pipe 32 are provided, and in the vane falling flow passage pipe 32, one end 32a at the inclination plate 31 side is formed in a larger diameter than the other end 32b of the vane passage frame body 22. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:从向前运动侧的旋转体可靠地竖立叶片板,并且可靠地将叶片板向下推动到向后运动侧的旋转体侧。 解决方案:流体通道框架体21设置在旋转体10的上方以形成流体通道20,叶片15可转动地布置在旋转体10上。流体接收部分15a和止动部分15b 比流体接收部15a短的方式形成为L字状,止动部15b配置在流体容纳部15a接受流体通路20的流体压力的一侧,以保持流体容纳部15a的竖立 。 在旋转体10上设置有具有比另一端30b大的直径的一端30a的叶片竖立流路管30。 在流体通道20的出口侧设置有倾斜板31和叶片下降流路管32,并且在叶片下降流路管32中,倾斜板31侧的一端32a形成为较大的直径 叶片通道框架体22的另一端32b。版权所有(C)2010,JPO&INPIT