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

JP2003322098A Uniaxial multistage pump 审中-公开
标题翻译：单相多泵
公开(公告)号：JP2003322098A
公开(公告)日：2003-11-14
申请号：JP2002093560
申请日：2002-03-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MURAI YOICHI , INOUE TOMOAKI , SAKAMOTO WAICHI , UEYAMA TOSHIHARU , NAGAI YUJI
IPC分类号： F04D29/02 , F04D29/04 , F04D29/046 , F04D29/44 , F16C17/10 , F16C33/20
摘要： PROBLEM TO BE SOLVED: To provide a pump reduced in size, eliminating auxiliary machines such as an oil pump for supplying lubricating oil, an oil pipe and a cooling device for lubricating oil, etc., and making the contact of a shaft with a bearing difficult, even if lubricating the pump with handled fluid (water). SOLUTION: Journal bearings 51 and 61 provided with sealing functions are provided on at least two or more portions between a core plate side cylinder part 42 of impellers 4 of an uniaxial multistage pump having the plurality of impellers 4 arranged on multistage and a diffuser member 5 or between an axial direction part 43 of a side plate and a stage 6. Thrust bearings 17a and 17b are provided on at least one or more portions between the core plate side disc part 42 of the impellers 4 and the diffuser member 5. In the journal bearings 51 and 61 or the thrust bearings 17a and 17b, positive pressure is generated over the entire of the peripheral direction. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了提供减小的泵，消除诸如用于供给润滑油的油泵等辅助机器，油管和用于润滑油的冷却装置等，并使轴的接触即使用处理液体（水）润滑泵，轴承也很困难。解决方案：具有密封功能的轴承51和61在具有多级布置的多个叶轮4的单轴多级泵的叶轮4的芯板侧圆筒部42之间的至少两个以上部分上设置，扩散器构件5或侧板的轴向部分43和台架6之间。推力轴承17a和17b设置在叶轮4的芯板侧盘部分42和扩散器构件5之间的至少一个或多个部分上在轴颈轴承51和61或推力轴承17a和17b中，在整个圆周方向产生正压力。版权所有（C）2004，JPO

2. 发明专利

JP2003307200A Centrifugal fluid machine 有权
标题翻译：离心流体机
公开(公告)号：JP2003307200A
公开(公告)日：2003-10-31
申请号：JP2003153682
申请日：2003-05-30
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAGAOKA YOSHIHIRO , TANAKA TEIJI , IWASE KOJI , IDA DOSHU , ISHIMARU HIROTOSHI , IWASAKI SABURO , UEYAMA TOSHIHARU , YOSHIDA TETSUYA
IPC分类号： F04D1/08 , F04D29/22 , F04D29/24 , F04D29/42 , F04D29/44 , F04D29/66
CPC分类号： F04D29/428
摘要： PROBLEM TO BE SOLVED: To reduce noise in a diffuser with vanes or a volute casing of a centrifugal fluid machine by easing pressure pulsation and vibrating force acting on the diffuser or the volute, or by canceling the pressure pulsation and the vibrating force each other.
SOLUTION: The fluid machine comprises an impeller 3 rotating around a rotation shaft 2 inside the casing 1 and the vaned diffuser 4 of the volute 12 fixed to the casing 1. Diameters of following edge of the impeller 3 and leading edge of the diffuser 4 or a cut-off are changed to the direction of the rotation shaft center line in order to incline the following edge of the impeller 3 and the diffuser 4's leading edge or the cut-off to the same direction on a meridian plane.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：通过减轻作用在扩散器或蜗壳上的压力脉动和振动力，或通过消除压力脉动和振动力来减小离心式流体机械的叶片或蜗壳的扩散器中的噪声彼此。解决方案：流体机械包括围绕壳体1内的旋转轴2旋转的叶轮3和固定到壳体1的蜗壳12的带叶片扩散器4.叶轮3的后缘的边缘和扩散器4或截止孔改变为旋转轴中心线的方向，以便在子午线平面上将叶轮3的后缘和扩散器4的前缘或截止线倾斜到同一方向。版权所有（C）2004，JPO

3. 发明专利

JP2006316793A Pump and its manufacturing method 有权
标题翻译：泵及其制造方法
公开(公告)号：JP2006316793A
公开(公告)日：2006-11-24
申请号：JP2006189464
申请日：2006-07-10
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： OKADA RYOJI , TAGUCHI KEIJI , UEYAMA TOSHIHARU , KATSURA HIROYUKI
IPC分类号： F04D29/02 , F04D29/04 , F04D29/22
摘要： PROBLEM TO BE SOLVED: To provide a pump having excellent corrosion resistance and wear resistance and high reliability even when treating water having high dissolved oxygen concentration and water containing large amount of solid suspended matter and to provide its manufacturing method.
SOLUTION: A hard Cr plated membrane 8 is formed on sliding faces or fitting faces of a rotary shaft 3 constituting the pump, a sleeve 10 attached to a shaft sealing part of the shaft, and a plurality of impellers 4 attached to the shaft to form a flow passage, and resin or oxide is impregnated in the membrane. A WC-NiCr thermal spraying membrane or a Cr3C2-NiCr thermal spraying membrane may be formed instead of the hard Cr plated membrane 8 for covering. Furthermore, it is more effective when a Ni plated membrane or Ni alloy membrane covers a lower layer of the hard Cr plated membrane 8 or the WC-NiCr thermal spraying membrane or the Cr3C2-NiCr thermal spraying membrane. SiO2 or CrO2 can be used instead of resin.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：即使在处理溶解氧浓度高的水和含有大量固体悬浮物的水的情况下，也提供具有优异的耐腐蚀性和耐磨性以及高可靠性的泵并提供其制造方法。解决方案：在构成泵的旋转轴3的滑动面或嵌合面上形成有硬质的Cr镀膜8，安装在轴的轴密封部上的套筒10和安装在该轴上的多个叶轮4 轴形成流路，树脂或氧化物被浸渍在膜中。可以形成WC-NiCr热喷涂膜或Cr3C2-NiCr热喷涂膜，而不是用于覆盖的硬铬镀膜8。此外，当Ni镀膜或Ni合金膜覆盖硬铬镀膜8或WC-NiCr热喷涂膜或Cr3C2-NiCr热喷涂膜的下层时，更有效。可以使用SiO 2或CrO 2代替树脂。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2002372050A Method of manufacturing bearing, and bearing 有权
标题翻译：制造轴承和轴承的方法
公开(公告)号：JP2002372050A
公开(公告)日：2002-12-26
申请号：JP2001181114
申请日：2001-06-15
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAGAI YUJI , UEYAMA TOSHIHARU , NAKANO MASAAKI , INOUE TOMOAKI
IPC分类号： F16C33/20
摘要： PROBLEM TO BE SOLVED: To provide a method of manufacturing a bearing capable of stably bonding a back metal to a resin sliding member, and causing no separation in operation, and to provide the bearing.
SOLUTION: In this method of manufacturing the bearing wherein the resin sliding member 5 is bonded to a sliding side-surface of the back metal 2 of a journal bearing 1, a metallic filter 4 having a matted outer peripheral surface is mounted at an inner peripheral side of the back metal 2 through a wax material 3, and a uniform pressurizing device 11 positioned on an inner periphery of a high-frequency heating coil 9 and capable of pressing the same with uniform distribution in the circumferential direction, is mounted at an inner peripheral side of the metallic filter 4. The method comprises a first bonding process for pressing and bonding the metallic filter 4 to the back metal 2 by the uniform pressurizing device 11 while heating the same by the high-frequency heating coil 9 in a state of rotating the whole, and a second bonding process for placing the resin sliding member 5 at the inner peripheral side of the metallic filter 4 after the temperature up, pressing the resin sliding member 5 by the uniform pressurizing device 11 for melting the resin sliding member 5 on the inner peripheral surface of the metallic filter 4, and impregnating a porous part of the metallic filter 4 wit the resin sliding member 5.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种制造能够将背面金属稳定地接合到树脂滑动构件上并且不会在操作中分离的轴承的制造方法，并且提供轴承。解决方案：在该轴承制造方法中，树脂滑动部件5与轴颈轴承1的背面金属2的滑动侧面接合，具有无光泽的外周面的金属过滤器4安装在内周背面金属2的侧面通过蜡材料3，以及位于高频加热线圈9的内周上并且能够沿圆周方向均匀分布的均匀的加压装置11安装在内部金属过滤器4的外周侧。该方法包括第一接合工艺，其通过均匀加压装置11将金属过滤器4按压并接合到背面金属2，同时通过高频加热线圈9以旋转整体，以及第二接合工序，用于在升温之后将树脂滑动部件5放置在金属过滤器4的内周侧，按压树脂滑动件通过用于熔化金属过滤器4的内周面上的树脂滑动构件5的均匀加压装置11和用树脂滑动构件5浸渍金属过滤器4的多孔部分。

5. 发明专利

JP2000145697A INEXPENSIVE, HIGH RELIABLE STRUCTURE OF PUMP 失效
公开(公告)号：JP2000145697A
公开(公告)日：2000-05-26
申请号：JP31866198
申请日：1998-11-10
申请人： HITACHI LTD , HITACHI TECHNO ENG
发明人： AMANO KAZUO , UEYAMA TOSHIHARU , SUGANO SATOSHI , NAGAI YUJI , SAKURAI SHINSUKE , HAYASHI MAKOTO
IPC分类号： F04D1/08 , F04D29/42
摘要： PROBLEM TO BE SOLVED: To dispense with processes of a precise finishing for stepping an outer casing inside diameter face and a specific stage used for stepping part of the outer casing inside diameter face by providing a member connecting the outer casing to the inner casing in an annular space between the outer casing and the inner casing. SOLUTION: An outer casing 1 of a structure having no stage part with a suction port 11 and discharge port 10 formed thereon, and an inner casing 3 constituted of several steps of same-shaped stages 2 combined together in its inside are arranged. A rotary shaft 4, an impeller 5, and a diffuser 20 are attached to the inside of the inner casing 3, and a member 9 connecting the outer casing 1 to the inner casing 3 is provided in an annular space 6 between the outer casing and the inner casing 3. The member 9 can seal and divide the two chambers of a water bleeding chamber and a high-pressure discharge chamber 8.

6. 发明专利

JPH10170691A SURFACE REFORMING METHOD OF METALLIC MEMBER 失效
公开(公告)号：JPH10170691A
公开(公告)日：1998-06-26
申请号：JP32820496
申请日：1996-12-09
申请人： HITACHI LTD
发明人： AMANO KAZUO , ENOMOTO KUNIO , HIRANO AKIHIKO , HIRANO ATSUYA , HATTORI SHIGEO , HAYASHI EISAKU , UEYAMA TOSHIHARU , HAYASHI MAKOTO
IPC分类号： G21D1/00 , C23F15/00
摘要： PROBLEM TO BE SOLVED: To prevent service life reduction such as corrosion fatigue of a carbon steel and low alloy steel apparatus or the like by improving corrosion resistance of the outermost surface by chemically or electrochemically removing an impurity, and improving strength of a surface layer by plastic working of the surface layer. SOLUTION: Photographic paper 4 soaked in a dilute sulfuric acid slution is stuck to a part whose metallic surface is polished, and S existing as an independent inclusion 1 becomes slufuric acid gas by reacting with a sulfuric acid, and is reacted with Ag of the photographic paper 4, and when the photographic paper 4 is discolored in brown, it is torn off, and new photographic paper 4 is again brought into close contact with the part, and it is repeated. When discoloration is eliminated, an inspecting sulfur print is lastly performed, and a discoloring degree of the photographic paper 4 is inspected, and a white color is confirmed, and when a surface is washed thereafter, an elution mark of S and MnS of a member surface remains as a recess, residual stress of the recess is higher than before elution of the inclusion. Then, when surface plastic working is performed, a metallic member is push-drawn as a surface layer by decay pressure of a water jet peen peening method or the like, and plastic deformation is imparted, and the surface layer is strengthened and reformed, and corrosion resistance can be improved.

7. 发明专利

JPH08200287A MOVABLE BLADE STRUCTURE FOR SEAWATER PUMP AND SEAWATER PUMP AND SEAL STRUCTURE THEREOF 失效
公开(公告)号：JPH08200287A
公开(公告)日：1996-08-06
申请号：JP1365495
申请日：1995-01-31
申请人： HITACHI LTD
发明人： OKADA RYOJI , KIMURA JINJI , TERAJIMA MAKOTO , UEYAMA TOSHIHARU
IPC分类号： F04D29/12 , F04D29/18
摘要： PURPOSE: To provide a movable blade structure for a seawater pump preventing a seawater leak without generating crevice corrosion in a shaft part of a blade slid against a V packing in a bearing side. CONSTITUTION: In a seawater pump in which a movable blade 4 mounted in an impeller hub 3 mounted in the point end of a rotary drive shaft is formed of a blade 4a and a shaft 4b, to fit the shaft 4b into a V packing in a bearing part of the impeller hub 3 turned by a blade drive mechanism provided in the impeller hub 3, so as to change a surface angle of the blade against a flow of water, the shaft 4b, providing a step difference successively from the first shaft part connected to the blade 4a, is constituted of the second/third shaft parts of thin diameter. A peripheral part of the second shaft part is constituted of a sleeve 6 made of high anticorrosive 25 to 30% Cr-3 to 5% Mo-Fe alloy, to slide the sleeve between itself and the V packing, and a rubber sheet 9 fixed by a bonding agent is interposed between one end surface of the sleeve 6 and a step differenced surface of the first shaft part, to press the other end surface of the sleeve 6 supported by a retainer plate 7 mounted in a step differenced surface of the second shaft part.

8. 发明专利

JPH08151993A BARREL CASING TYPE TURBINE RUMP 失效
公开(公告)号：JPH08151993A
公开(公告)日：1996-06-11
申请号：JP29424394
申请日：1994-11-29
申请人： HITACHI LTD
发明人： OKAWA KATSUHIDE , UEYAMA TOSHIHARU , ABE HIROKADO , FUJII TAKUYA
IPC分类号： F04D29/08 , F04D1/08 , F04D29/22
摘要： PURPOSE: To attain reducing a cost and noise by fitting in internal/external peripheral surfaces of an outer/inner casing, and further providing an O ring and a backup ring in order to seal an intermediate stage emerging chamber and a delivery chamber, to accomplish a similar function in the past. CONSTITUTION: A seal contact surface in an axial right angle direction of sealing a conventional intermediate stage emerging chamber and delivery chamber 6 is eliminated, to provide in lieu of this seal contact surface a seal surface in a fitting surface 12 in internal/external peripheral surfaces of an outer/inner casing. By providing an O ring 13 and a backup ring 14, introducing high pressure water of the delivery chamber 6 to the intermediate stage emerging chamber can be completely sealed. Further in addition to two-point supporting both ends of the inner casing, fitting is performed in the internal/external peripheral surfaces of the outer casing 1 and inner casing serving as a seal part of the intermediate stage emerging chamber and the delivery chamber 6. Thus by attaining external diametrally contracting the outer casing 1 and suppressing vibration of the inner casing, reducing a cost and noise reducing structure can be attained.

9. 发明专利

JPH05195986A BACK FACE GAS ADJUSTING DEVICE 失效
公开(公告)号：JPH05195986A
公开(公告)日：1993-08-06
申请号：JP547592
申请日：1992-01-16
申请人： HITACHI LTD
发明人： OKAWA KATSUHIDE , UEYAMA TOSHIHARU
IPC分类号： F04D29/04 , F04D29/046
摘要： PURPOSE:To facilitate back face gap adjustment in a back face gap adjusting device for a multistage turbine pump or the like by putting a holder with a thrust bearing enclosed therein into a bearing housing, and moving a rotor part by the axial movement of a striker so as to adjust the axial position of an impeller. CONSTITUTION:A holder 2 with a thrust bearing 3 enclosed therein is put into a housing 1. In the case of reducing a back face gap, oil is put into an oil chamber 4 adjacent to the 'in' side of the thrust bearing 3, and the oil is let out from an 'out' side oil chamber 5. Then the holder 2 moves onto the oil chamber 5 side, and a rotor part moves onto the coupling side through the thrust bearing 3 and a striker 8 to reduce the back face gap. The gap is enlarged by performing the filling and letting-out of oil reversely. The formation of hydraulic pressure difference between the oil chambers 4, 5 is performed by an electromagnetic proportional control valve 6.

10. 发明专利

JP2002188637A BEARING DEVICE, AND PUMP DEVICE AND PUMP FACILITY 失效
公开(公告)号：JP2002188637A
公开(公告)日：2002-07-05
申请号：JP2000388653
申请日：2000-12-21
申请人： HITACHI LTD
发明人： NAKANO MASAAKI , INOUE TOMOAKI , AIZAWA KOJI , UEYAMA TOSHIHARU , NAGAI YUJI
IPC分类号： F16C33/10 , F16C17/02 , F16C17/06 , F16N7/38
摘要： PROBLEM TO BE SOLVED: To provide a bearing device capable of saving costs, an installation space, energy and resource, securing the sufficient oiling amount from low-rev thrust to high-rev thrust and over an extended time, and obtaining high reliability. SOLUTION: An oiler 24 supplying lubricant 11 to a journal bearing 2 contains a disk 19 fixed on a rotary shaft, an oil case 20 forming an arc-shaped shallow oil chamber 21 opposing the disk 19, an oil suction passage 27 for leading the lubricant 11, and an oil supply passage 26 leading the lubricant 11 to the journal bearing 2. The oil case 20 has heat resistance, and consists of a synthetic resin having self-lubricity.

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