专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2004027992A Seawater pump and its corrosion preventing method 审中-公开
公开(公告)号：JP2004027992A
公开(公告)日：2004-01-29
申请号：JP2002187307
申请日：2002-06-27
申请人： Hitachi Industries Co Ltd , 株式会社日立インダストリイズ
发明人： YODA HIROAKI , AKI TAKASHI , KARASHI SHIGEKI , HASHIMOTO TAIJI
IPC分类号： F04D7/06 , F04D13/00
摘要： PROBLEM TO BE SOLVED: To provide a seawater pump and its corrosion preventing method capable of inhibiting the crevice corrosion of a stainless steel member and the like in the atmospheric air in the seawater pump, and minimizing the amount of injected freshwater.
SOLUTION: In this seawater pump comprising an intermediate shaft coupling connecting an upper shaft 12 and a lower shaft 13, and a flange-shaped pipe joint 3 connecting a plurality of divided pump casings 1 in a state that the shaft coupling and the flange-shaped pipe joint 3 are exposed to the atmospheric air when the pump is stopped, a nozzle 22 is mounted around the shaft coupling and the flange-shaped pipe joint 3, and the freshwater is injected from the nozzle 22 to the shaft coupling and the flange-shaped pipe joint exposed to the atmospheric air when the pump is stopped.
COPYRIGHT: (C)2004,JPO

2. 发明专利

JP2006291724A Pump and method for preventing corrosion thereof 有权
标题翻译：用于防止腐蚀的泵和方法
公开(公告)号：JP2006291724A
公开(公告)日：2006-10-26
申请号：JP2005109227
申请日：2005-04-05
申请人： Hitachi Industries Co Ltd , T Tekku:Kk , 株式会社ティーテック , 株式会社日立インダストリイズ
发明人： AKI TAKASHI , YODA HIROAKI , TAKAGI KANAME , OKITSU AKIRA , HOSAKA NOBUYOSHI
IPC分类号： F04D7/06
摘要： PROBLEM TO BE SOLVED: To provide a pump suppressing crevice corrosion between a rotary shaft and an impeller.
SOLUTION: A seawater pump is provided with a cylindrical casing, a rotary shaft 20 provided in the casing and rotating in a predetermined direction, and an impeller provided on a tip of the rotary shaft 20. The seawater pump includes a conductive ring 41 provided on an outer circumference ring 41 provided on an outer circumference surface of the rotary shaft 20, a conductive abutment terminal 42 provided on the casing and moving forward and backward in relation to the conductive ring, and an urging mechanism 43 urging the conductive abutment terminal 42 to the conductive ring 41.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种泵，其抑制旋转轴与叶轮之间的缝隙腐蚀。解决方案：海水泵设置有圆筒形壳体，设置在壳体中并沿预定方向旋转的旋转轴20和设置在旋转轴20的尖端上的叶轮。海水泵包括导电环 41设置在设置在旋转轴20的外周面上的外周环41上，设置在壳体上并相对于导电环向前后移动的导电抵接端子42以及推动导电支座端子42连接到导电环41.版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2005320869A Suction casing, suction passage structure and fluid machine 有权
标题翻译：吸油套管，抽吸式结构和流体机
公开(公告)号：JP2005320869A
公开(公告)日：2005-11-17
申请号：JP2004137513
申请日：2004-05-06
申请人： Hitachi Industries Co Ltd , 株式会社日立インダストリイズ
发明人： INOUE YASUHIRO , AKI TAKASHI , KAWABATA SEIJI , TANAKA TEIJI
IPC分类号： F04D29/44 , F04D29/66
CPC分类号： F04D29/444 , F04D29/4213 , F04D29/4273 , F04D29/448 , F05D2250/51
摘要： PROBLEM TO BE SOLVED: To effectively prevent localizing of a cavitation generation area and simplify a configuration of an inner flow passage concerning a prewhirl type suction casing used for sucking fluid into a fluid machine and causing a swirling flow of the fluid. SOLUTION: The suction casing 3 has the inner flow passage 4 connected to a suction passage 2 which is provided upstream orthogonally to a rotation axis 1 of the fluid machine. The inner flow passage 4 is formed in a spiral shape for causing the swirling flow of the fluid in a state orthogonal to the rotation axis. A straightening plate 12 is provided in the inner flow passage of the suction casing. The straightening plate bears a straightening function of dividing a flow rate of the swirling fluid flow in the inner flow passage between a whirl center side and a whirl outer periphery side and a straightening function of causing tuning of the fluid in a swirling direction of the swirling fluid flow by the inner flow passage. These straightening functions make a smoothly swirling flow easy to form in the inner flow passage and prevents localizing of the cavitation generation area. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：有效地防止空化产生区域的定位，并且简化关于用于将流体吸入流体机器中的预涡流型吸入壳体的内部流动通道的构造，并引起流体的旋转流动。抽吸壳体3具有连接到与流体机械的旋转轴线1正交的上游侧的吸入通道2的内部流路4。内部流路4形成为与旋转轴正交的状态下的流体的旋转流动的螺旋形状。在抽吸壳体的内部流路中设置有矫直板12。整流板具有将涡流中心侧和旋转外周侧之间的内流道中的旋流流体的流量分开的矫直功能，以及使旋流方向的流体调谐的矫直功能内流道流体流动。这些矫直功能使得在内部流动通道中易于形成平滑的旋转流动并且防止空化产生区域的定位。版权所有（C）2006，JPO＆NCIPI

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式