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1. 发明专利

JP2004261661A Method for purifying lake or the like, and purifying system therefor 有权
公开(公告)号：JP2004261661A
公开(公告)日：2004-09-24
申请号：JP2003052413
申请日：2003-02-28
申请人： Eng Shinko Kyokai , Hitachi Industries Co Ltd , Ohbayashi Corp , 株式会社日立インダストリイズ , 株式会社大林組 , 財団法人エンジニアリング振興協会
发明人： YODA HIROAKI , YUMOTO SATOSHI , MORITA MINORU , SAHO NORIHIDE , TANAKA FUMITAKA , SOGO KIYOSHI
IPC分类号： C02F3/32 , C02F1/48
CPC分类号： Y02W10/37
摘要： PROBLEM TO BE SOLVED: To provide a method for purifying a lake or the like where eutrophication caused by contaminants such as phosphorus and nitrogen in a purifying region such as a lake can be suppressed while attaining the minimization of equipment cost, an installation space and driving energy, and to provide a system for purifying the lake or the like. SOLUTION: The purifying method comprises: a first purifying stage where part of water flowing from a river or the like into a closed water region 2 such as a lake is taken, and the water is physicochemically treated to mainly remove phosphorus; and a second purifying stage where the treated water treated in the first purifying stage is introduced into a purifying region 6 formed by partitioning the closed water region 2 in a depth direction and the treated water is subjected to biological treatment in the inside of the purifying region 6 to mainly remove nitrogen. COPYRIGHT: (C)2004,JPO&NCIPI

2. 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

3. 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

4. 发明专利

JP2005262046A Magnetic separation device and water-cleaning device using it 审中-公开
标题翻译：磁选分离装置和使用它的水清洗装置
公开(公告)号：JP2005262046A
公开(公告)日：2005-09-29
申请号：JP2004076399
申请日：2004-03-17
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： YODA HIROAKI , YUMOTO SATOSHI , MORITA MINORU
IPC分类号： C02F1/56 , B01D35/06 , B03C1/00 , B03C1/02
CPC分类号： Y02W10/37
摘要： PROBLEM TO BE SOLVED: To provide a magnetic separation device realizing an enhancement in water quality of treated water by enhancing a washing effect of a magnetic coagulant separated/captured from water to be treated by a rotary circular disc type magnetic filter, and a purification device using it. SOLUTION: A water spray pipe 11a and a water spray pipe 11b arranged above and below the rotary circular disc type magnetic filter 3 respectively are radially arranged similarly to partition plates 126 radially provided relative to the central axis of the rotary circular disc type magnetic filter 3. The water spray pipe 11a for feeding washing water from above the rotary circular disc type magnetic filter 3 is arranged at a position deviated in a rotation direction of the rotary circular disc type magnetic filter 3 than the water spray pipe 11b for feeding washing water from below. An opening angle in the rotation direction in the rotary circular disc type magnetic filter 3 of the water spray pipe 11a and the water spray pipe 11b is made larger than a gap of a plurality of radially and equally divided/arranged partition plates 126 of the rotary circular disc type magnetic filter 3 such that the same one fan-like matrix group are not simultaneously water-sprayed. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决的问题：提供一种通过提高通过旋转圆盘型磁性过滤器分离/捕获的待处理水的磁性凝结剂的洗涤效果来实现提高处理水的水质的磁选机，以及使用它的净化装置。解决方案：旋转圆盘型磁性过滤器3的上下配置的喷水管11a和喷水管11b分别径向排列成相对于旋转圆盘型中心轴径向设置的隔板126 用于从旋转圆盘型磁性过滤器3上方供给洗涤水的喷水管11a配置在比旋转圆盘型磁性过滤器3的旋转方向偏离比供给用喷水管11b的位置从下面清洗水。喷水管11a和喷水管11b的旋转圆盘型磁性过滤器3中的旋转方向的开度角大于旋转体的多个径向分布配置的分隔板126的间隙圆盘型磁性过滤器3，使得相同的一个扇形基体组不同时喷水。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JP2003315146A Monitoring method and device for pump vibration 有权
标题翻译：监测方法和泵振动装置
公开(公告)号：JP2003315146A
公开(公告)日：2003-11-06
申请号：JP2002125159
申请日：2002-04-26
申请人： Hitachi Industries Co Ltd , Hitachi Ltd , 株式会社日立インダストリイズ , 株式会社日立製作所
发明人： TAKAYANAGI MASAAKI , SHIMOIDE SHINICHI , YODA HIROAKI , HASHIMOTO TAIJI
IPC分类号： G01M99/00 , F04B49/10 , F04D13/00 , F04D15/00 , G01H17/00 , G01M19/00
摘要： PROBLEM TO BE SOLVED: To predict and prevent an excessive vibration before the vibration increases due to resonance when a pump is started. SOLUTION: Pressure fluctuation and vibration of an internal fluid in a pipe or a casing are measured. By conducting frequency analysis of the obtained data, a vertical direction excitation vibration frequency f v , a horizontal direction excitation vibration frequency f h , an excitation vibration frequency f p generated by pressure fluctuation, a vertical direction natural frequency f vn , and a horizontal direction natural frequency f hn are obtained. When 2f hn -2f hn ×0.05≤f v ≤2f hn +2 f hn ×0.05, or 2f hn -2f hn ×0.05≤f p ≤2f hn +2f hn ×0.05, or when 0.975≤2f hn /f vn ≤1.025 and f h is in a range between plus and minus 5% of f hn or f v is in a range between plus and minus 5% or f vn , an alarm warning an excessive vibration is issued. In addition, by recording the measurement and monitoring data, a discharge pressure, a discharge flow rate, and a rotating speed of the pump, and level of suction water, and referring these data in a continuous operation and operation condition change, an operation condition which may increase vibration can be avoided. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：在泵启动时，由于谐振而在振动增加之前预测和防止过度振动。
解决方案：测量管道或套管内部流体的压力波动和振动。通过对所获得的数据进行频率分析，垂直方向激励振动频率f v ，水平方向激励振动频率f h ，激励振动频率f SB 获得由压力波动，垂直方向固有频率f vn 和水平方向固有频率f hn 产生的。当2f hn -2f hn ×0.05≤f v ≤2f hn +2 f hn < /SB>×0.05或2f hn -2f hn ×0.05≤f p ≤2f hn hn ×0.05，或者当0.975≤2f≤1.025且f h 在一定范围内 f hn 或f v 的正负5％处于正负5％或f vn 之间的范围内，报警警告发出过大的振动。此外，通过记录测量和监视数据，排出压力，排出流量和泵的转速以及吸入水的水平，并且在连续的操作和操作条件下参考这些数据改变，操作条件这可能会增加振动，可以避免。版权所有（C）2004，JPO

6. 发明专利

JP2005169250A Magnetic separation apparatus and water purification equipment 有权
标题翻译：磁选分离装置和水净化设备
公开(公告)号：JP2005169250A
公开(公告)日：2005-06-30
申请号：JP2003412706
申请日：2003-12-11
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： YODA HIROAKI , YUMOTO SATOSHI , MORITA MINORU
IPC分类号： C02F1/52 , B03C1/00 , B03C1/027 , B03C1/029 , B03C1/03 , B03C1/032 , C02F1/48 , C02F1/56 , C02F1/66 , C02F11/14
CPC分类号： C02F1/488 , B03C1/01 , B03C1/032 , B03C1/0337 , B03C1/034 , B03C2201/18 , C02F1/001 , C02F1/5236 , C02F1/56 , C02F1/66 , C02F11/14 , C02F2301/046
摘要： PROBLEM TO BE SOLVED: To provide a magnetic separation apparatus that stabilizes magnetic separation properties by preventing the clogging of an aqueduct due to the build-up of a magnetic aggregate to the inner wall of a water conductive pipe and by accomplishing a cost reduction due to a small-diameter part of the water conductive pipe. SOLUTION: The magnetic separation apparatus is provided with a coreless solenoid type magnet 105 at the surrounding of the water conductive pipe 301 to conduct a water from the lower part of the water to be treated containing the magnetic aggregate in which a pollutant and magnetic powder are condensed, a rotary disc type magnetic filter case 103 equipped with a matrix group to adsorb the magnetic aggregate in the water to be treated supplied from the water conductive pipe 301 at the upper part of the coreless solenoid type magnet 105 and a washing means 111 to wash the matrix group which is adsorbed by the magnetic aggregate. The water conductive pipe 301 has the small-diameter pipe 301a located within the coreless solenoid type magnet 105 and an expanded pipe 301b expanding to the water conductive part side of the rotary disc type magnetic filter case 103 from the small-diameter pipe 301a. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种通过防止由于磁性骨料向导水管的内壁积聚导致的输水管堵塞并且通过实现成本来稳定磁分离性能的磁选分离装置由于导水管的小直径部分而导致的减少。解决方案：磁分离装置在导水管301的周围设有无芯螺线管型磁体105，以从含有含有污染物和磁性体的磁性骨料的待处理水的下部导入水，磁性粉末被冷凝，配备有矩阵组的旋转盘型磁性过滤器壳体103，用于吸附由无芯螺线管型磁体105的上部的导水管301供给的待处理水中的磁性聚集体，用于洗涤由磁性骨料吸附的基质组的装置111。导水管301具有位于无芯螺线管型磁体105内的小直径管301a和从小直径管301a向旋转盘型磁性过滤器壳体103的导水部侧扩展的扩管301b。版权所有（C）2005，JPO＆NCIPI

7. 发明专利

JP2004293449A Water filling device and pumping station using it 有权
公开(公告)号：JP2004293449A
公开(公告)日：2004-10-21
申请号：JP2003087997
申请日：2003-03-27
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 , TANAKA HIROSHI , IWASAKI MINORU , NAKAJIMA NOBUYUKI , YUMOTO SATOSHI
IPC分类号： F04D15/00 , F04B49/00 , F04B49/06 , F04C25/02 , F04D9/04
摘要： PROBLEM TO BE SOLVED: To provide a water filling device which has fewer factors of failure and high certainty in the operation when needed as the water filling device using a dry type vacuum pump having high economical efficiency as a whole of the device.
SOLUTION: The water filling device is used for making negative pressure state to fill water into a pump casing 13 of the lifting pump when starting pumping water with the pump, and therefore, has the dry type vacuum pump 36 for making the negative pressure state. The water filling device is provided with a first water filling detection means 32 adjacent to the pump casing and a second water filling detection means 42 between the first water filling detection means and the vacuum pump.
COPYRIGHT: (C)2005,JPO&NCIPI

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