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1. 发明专利

JP2011001936A Turbo machine and water turbine runner 有权
标题翻译：涡轮机和水轮机
公开(公告)号：JP2011001936A
公开(公告)日：2011-01-06
申请号：JP2009147683
申请日：2009-06-22
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHINTANI KENJI , NOMOTO SATORU , TANI KIYOTO
IPC分类号： F03B3/12 , F03B3/04
CPC分类号： Y02E10/223
摘要： PROBLEM TO BE SOLVED: To provide a turbo machine which is excellent in energy efficiency as the whole while suppressing peeling, back flow, leak and cavitation in a shroud-side end portion of a moving blade.SOLUTION: The water turbine runner 3 set on the inner circumferential side of a shroud 4 through a space includes a shaft 6 rotatably supported, and a plurality of moving blades 1 attached to the circumference of the shaft 6, the moving blade being twisted from the shaft 6 toward the shroud 4. A twisting direction 71 of the moving blade 1 near the shroud 4 is reversed to a twisting direction 70 of the moving blade 1 near the shaft 6.
摘要翻译：要解决的问题：提供一种整体上具有优异的能量效率的涡轮机，同时抑制动叶片的护罩侧端部的剥离，回流，泄漏和气蚀。解决方案：水轮机3设置在通过空间的护罩4的内周侧包括可旋转地支撑的轴6和附接到轴6的周边的多个活动叶片1，动叶片从轴6朝向护罩4扭转。扭转靠近护罩4的动叶片1的方向71反转到靠近轴6的动叶片1的扭转方向70。

2. 发明专利

JP2010168903A Centrifugal hydraulic machine 有权
标题翻译：离心式液压机
公开(公告)号：JP2010168903A
公开(公告)日：2010-08-05
申请号：JP2009009533
申请日：2009-01-20
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NOMOTO SATORU , IWASHIGE KENGO , KARASHI SHIGEKI , IWANO RYUICHIRO , ITO HIROSHI , SHINTANI KENJI
IPC分类号： F03B3/12 , F03B3/02
CPC分类号： Y02E10/223
摘要： PROBLEM TO BE SOLVED: To provide a centrifugal hydraulic machine suppressing the occurrence of cavitation in the inlet of a runner while a water turbine is operated even if the flow quantity of the water passing through the runner is changed.
SOLUTION: This centrifugal hydraulic machine is provided with: a runner 1 which has a plurality of runner blades 2 affixed between a crown 4 and a shroud 5 and is rotated about a rotating axis S; and a plurality of guide vanes 34 annularly disposed on the outer peripheral side of the runner 1. The maximal point 70 which is positioned on the reverse rotating direction side of the runner 1 while the water turbine is operated, away from a crown side end 71 and a shroud side end 72 at the leading edge 3 of each of runner blades 2, is provided in a portion on the leading edge 3 of each of the runner blades 2 between the crown 4 and the shroud 5.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种离心式液压机，即使水通过流道的流量发生变化，也能够在水轮机运转的同时抑制流道入口的空化现象。解决方案：该离心液压机设置有：流道1，其具有固定在冠部4和护罩5之间并围绕旋转轴线S旋转的多个流道叶片2; 以及环形地设置在流道1的外周侧的多个导向叶片34.在水轮机动作的同时位于流道1的反转方向侧的最大点70远离冠侧端部71 并且在每个流道叶片2的前缘3处的护罩侧端72设置在冠部4和护罩5之间的每个流道叶片2的前缘3的部分中。
版权所有（ C）2010，JPO＆INPIT

3. 发明专利

JP2007064103A Axial flow hydraulic turbine 审中-公开
标题翻译：轴流式液压涡轮
公开(公告)号：JP2007064103A
公开(公告)日：2007-03-15
申请号：JP2005251408
申请日：2005-08-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHINTANI KENJI , IWANO RYUICHIRO , SAITO EIJI , NOMOTO SATORU
IPC分类号： F03B3/04 , F03B3/12
CPC分类号： Y02E10/223
摘要： PROBLEM TO BE SOLVED: To provide an axial flow hydraulic turbine of small axial load on a bearing while installation space is the same level as conventional technology.
SOLUTION: This axial flow hydraulic turbine has an upstream side impeller 10 rotating around a shaft 10c and a downstream side impeller 9 rotating in a reverse direction of the upstream side impeller 10 around a shaft 9c on a same straight line as the shaft 10c arranged in a same flow passage, transmits rotation of the two impellers to a rotary shaft arranged outside of the flow passage by a rotary force transmitting device. The upstream side impeller 10 is provided with blades 10d having leading edges positioned in a direction of travel than trailing edges and the downstream side impeller 9 is provided with blades 9d having trailing edges positioned in a direction of travel than leading edges.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供轴承上的小轴向负载的轴流式液压涡轮机，而安装空间与常规技术相同。解决方案：该轴流式水轮机具有上游侧叶轮10，该上游侧叶轮10围绕轴10c和下游侧叶轮9旋转，该下游侧叶轮9在上游侧叶轮10的相反方向上围绕与轴9相同的直线上的轴9c旋转 10c布置在相同的流动通道中，通过旋转力传递装置将两个叶轮的旋转传递到布置在流动通道外侧的旋转轴。上游侧叶轮10设置有叶片10d，叶片10d具有位于行进方向上的前缘，而后缘侧叶轮9设置有叶片9d，叶片9d具有位于行进方向上的后缘。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2009167893A Draft tube of hydraulic machine 有权
标题翻译：液压机械管
公开(公告)号：JP2009167893A
公开(公告)日：2009-07-30
申请号：JP2008006363
申请日：2008-01-16
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHINTANI KENJI , NOMOTO SATORU , TANI KIYOTO
IPC分类号： F03B11/00 , F03B3/18
CPC分类号： F03B3/18 , F03B3/06 , F03B11/02 , F05B2240/122 , F05B2250/11 , F05B2250/21 , F05B2250/324 , F05B2250/502 , Y02E10/223 , Y02E10/226 , Y02E60/17
摘要： 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
摘要翻译：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

5. 发明专利

JP2009127572A Suction tube for hydraulic machine 审中-公开
标题翻译：液压机吸油管
公开(公告)号：JP2009127572A
公开(公告)日：2009-06-11
申请号：JP2007305186
申请日：2007-11-27
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHINTANI KENJI , NOMOTO SATORU , TANI KIYOTO
IPC分类号： F03B11/00 , F03B3/06
CPC分类号： Y02E10/223 , Y02E10/226
摘要： PROBLEM TO BE SOLVED: To provide a suction tube of a hydraulic machine capable of reducing loss generated in the suction tube by inhibiting formation of horseshoe swirl which may be formed at a pier leading edge.
SOLUTION: The suction tube is constructed in such a manner that an expansion rate of the suction tube at a wake flow side of an upstream side end part 4 of the pier 3 is greater than an expansion rate of the suction tube at an upstream side of the upstream side end part 4 of the pier 3. In other words, when a section at the upstream side end part 4 of the pier 3 is represented by S0, channel section area of a section S2 at an upstream side of the section S0 is represented by AS2, channel section area of a section S1 at a position of which distance from the section S2 is R is represented by AS1, channel section area of a section S3 at a downstream side of the section S0 is represented by AS3, and channel section area of a section S4 at a position of which distance from the section S3 is R is represented by AS4, the suction tube is constructed to satisfy an inequality: (AS2-AS1)/R
摘要翻译：要解决的问题：提供一种液压机的吸入管，其能够通过抑制可能形成在码头前缘的马蹄形漩涡的形成来减少吸入管中产生的损失。解决方案：吸入管的构造使得在墩3的上游侧端部4的尾流侧的吸入管的膨胀率大于吸入管的膨胀率在墩3的上游侧端部4的上游侧。换句话说，当墩3的上游侧端部4处的部分由S0表示时，在上游侧的部分S2的通道截面积部分S0由AS2表示，在距离部分S2的距离为R的位置处的部分S1的通道部分区域由AS1表示，部分S0的下游侧的部分S3的通道部分区域由AS3 ，并且在距离部分S3的距离为R的位置处的部分S4的通道部分区域由AS4表示，吸入管被构造成满足不等式：（AS2-AS1）/ R <（AS4-AS3）/ R. 版权所有（C）2009，JPO＆INPIT

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