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1. 发明专利

JPH06207579A FRANCIS TYPE PUMP WATER TURBINE 失效
公开(公告)号：JPH06207579A
公开(公告)日：1994-07-26
申请号：JP320893
申请日：1993-01-12
申请人： HITACHI LTD
发明人： SHINMEI KATSUMASA
IPC分类号： F03B3/02
摘要： PURPOSE:To reduce a hydraulic loss of a guide vane flow passage and to improve the efficiency of a pump and a water turbine by noticing a fact that the height of a runner mouthpiece is deviated from the width of a guide vane flow passage. CONSTITUTION:A Francis type water turbine comprises a runner 1 having a runner mouthpiece; guide vanes 3 arranged on the runner mouthpiece side of the runner 1; and rotatable around spindles 3a and 3b, upper and lower covers 2 and 4 to rotatably support the spindles 3a and 3b and form a guide vane flow passage; and stay vanes 5 of which is arranged on the high pressure side of each guide vane 3. A flow water surface is formed by using the flow passage of the stay vane 5c, a guide vane flow passage, and the runner mouthpiece. Chamfering is applied on the corner parts on the runner 1 side of the flow water surfaces of upper and lower covers 2 and 4. An intersection A between the chamfered surface and a surface, positioned facing the runner 1 of the upper and lower covers 2 and 4, with a gap c therebetween is present on the opposite side to a water flow surface in relation on the extension line B of the water flow surface of the runner 1.

2. 发明专利

JPH0587039A CASING OF HYDRAULIC TURBINE AND REVERSIBLE PUMP-TURBINE 失效
公开(公告)号：JPH0587039A
公开(公告)日：1993-04-06
申请号：JP24169691
申请日：1991-09-20
申请人： HITACHI LTD
发明人： TOSHIMA MASAMI , TANABE SEIICHI , SHINMEI KATSUMASA , TANAKA YUJI
IPC分类号： F03B11/02
摘要： PURPOSE:To reduce flow loss owing to the difference between the installing angle of a stay vane and the flowing-in angle to the stay vane, by cutting off the stay vane installing faces of seed rings, and increasing the thicknesses gradually from the outer peripheral end to the inner peripheral end of the speed rings. CONSTITUTION:In a spiral form casing 1 of a hydraulic turbine or a reversible pump-turbine, plural stay vanes 4 are lined up in the peripheral direction between the upper and lower two annular plates opposing to each other, and thereby, the upper and lower speed rings 2 and 3 are formed. In this case, the speed vane installing side surfaces 2a and 3a of the upper and lower speed rings 2 and 3 are cut off, and their thicknesses are changed to become larger gradually from the outer peripheral end (t) to the inner peripheral end T. As a result, the difference between the installing angle of the stay vane 4 and the flowing-in angle to the stay vane 4 is reduced. Consequently, the flow loss can be reduced, and the whole performance and the economy of a hydraulic turbine or a reversible pump-turbine can be improved.

3. 发明专利

JP2003286934A Method for converting into pump water wheel 有权
标题翻译：用于转换成泵水轮的方法
公开(公告)号：JP2003286934A
公开(公告)日：2003-10-10
申请号：JP2002087354
申请日：2002-03-27
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHINMEI KATSUMASA , NIIKURA KAZUO
IPC分类号： F03B3/10 , F03B11/00 , F03B13/10 , F03B15/04 , F04D29/22
CPC分类号： F04D29/2261 , F03B13/10 , Y02E10/22 , Y02E10/223 , Y02E10/226 , Y10T29/49238 , Y10T29/49318 , Y10T29/49716
摘要： PROBLEM TO BE SOLVED: To convert an existing pump into a pump water wheel capable of generating power as a water wheel as well as pumping water. SOLUTION: An existing pump runner is modified, the existing pump runner is replaced by a replacement runner, or a movable guide vane is installed. Otherwise, rotation speed is increased, or a static passage part is modified. The function of an emergency power station to cope with power shortage can be given to a pumping station. A converted pump water wheel of favorable water wheel performance can be economically obtained. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：将现有泵转换成能够作为水轮发电的泵水轮以及泵送水。
解决方案：现有的泵流道被修改，现有的泵流道由更换的流道替代，或安装可移动的导流叶片。否则，旋转速度增加，或静止通道部分被修改。应急电站应对电力短缺的功能可以给予泵站。可以经济地获得有利的水轮性能的转换泵水轮。版权所有（C）2004，JPO

4. 发明专利

JP2000320442A AXIAL FLOW WATER WHEEL 失效
公开(公告)号：JP2000320442A
公开(公告)日：2000-11-21
申请号：JP13472599
申请日：1999-05-14
申请人： HITACHI LTD
发明人： ISHII TOSHINORI , SHINMEI KATSUMASA
IPC分类号： F03B3/14
摘要： PROBLEM TO BE SOLVED: To restrain performance lowering of a moving blade by the changes in the operation condition and obtain a high efficiency by a moving blade support shaft and supporting the angle rotatably by a main shaft (water wheel rotation shaft), at an axial flow water wheel. SOLUTION: This water wheel is provided with a casing 4, having a guide vane on its outer periphery and storing a main shaft 21 of the water wheel on its inside and a hub, on whose outer periphery a moving blade 2a is provided and in whose inside a moving blade drive mechanism in which the moving blade 2a is rotatingly driven around a support shaft 17 of this moving blade 2a is stored. In the axial flow water wheel for driving this moving blade drive mechanism by the axial direction drive of the main shaft 21, the moving blade drive mechanism is provided with a drive mechanism for driving the support shaft 17, so as to vary the angle made by the support shaft 17 and main shaft 21.

5. 发明专利

JP2000240552A HYDRAULIC TURBINE GENERATOR, ITS OPERATING METHOD, AND HYDRAULIC TURBINE GENERATOR PLANT 失效
公开(公告)号：JP2000240552A
公开(公告)日：2000-09-05
申请号：JP3816799
申请日：1999-02-17
申请人： HITACHI LTD
发明人： MIURA SEIJI , YOKOMIZO OSAMU , SHINMEI KATSUMASA
IPC分类号： F03B3/04 , F03B13/10
摘要： PROBLEM TO BE SOLVED: To effectively utilize hydraulic energy of a low head drop by carrying a frame, and moving a hydraulic turbine generator into flowing water or n outside flow water, in the case where a hydraulic power generator provided with a hydraulic turbine for converting water flow energy into electric energy and a power generator is fixed in a conduit cylinder disposed in the frame. SOLUTION: Water flows (a) into a conduit cylinder 11, and flows out (b) after a hydraulic runner 6 is rotated bypassing a column 9, a stay vane 8, and a guide vane 7. Power is generated in the conduit cylinder 11 by a rotor 12 and stator 13 of a power generator which is directly connected to a rotary shaft of the hydraulic runner 6. The outside of the hydraulic turbine power generator 5 is formed from a frame 30 so as to carry the whole, and a hanging tool 32 is attached thereto. An angle set operation for a runner vane is performed by an operation rod 22 disposed on a housing part 26, and an angle of the guide vane 7 is set by an operation rod 25 disposed on a housing 27. It is thus possible to simply generate power effectively utilizing hydraulic energy of a low head drop in the river.

6. 发明专利

JP2000136766A PUMP TURBINE RUNNER 失效
公开(公告)号：JP2000136766A
公开(公告)日：2000-05-16
申请号：JP31335898
申请日：1998-11-04
申请人： HITACHI LTD , TOKYO ELECTRIC POWER CO
发明人： TANI KIYOTO , SHINMEI KATSUMASA , WATABE SHIGENORI
IPC分类号： F03B3/10 , F03B3/12
摘要： PROBLEM TO BE SOLVED: To control the generation of cavitation at the entrances of vanes without complicating the shape of a runner and provide a pump turbine with a wide operation range of pump. SOLUTION: A pump turbine runner includes a crown 2, a plurality of vanes 1 established by the crown, and shrouds 3 provided at the other ends of the vanes. The front edges of the vanes 1 in the rotating direction during operating a pump are formed so that crossings 4 between the crown and the vane at the front edges and crossings 5 between the shroud and the vane may be both located ahead of the front edges of the vanes 1 in the rotating direction during operating the pump, and also formed in a smoothly curved shape.

7. 发明专利

JP2000120521A WATER WHEEL 失效
公开(公告)号：JP2000120521A
公开(公告)日：2000-04-25
申请号：JP29172898
申请日：1998-10-14
申请人： HITACHI LTD
发明人： IWANO RYUICHIRO , SHINMEI KATSUMASA
IPC分类号： F03B3/02 , F03B3/06 , F03B3/18 , F03B11/04
摘要： PROBLEM TO BE SOLVED: To provide a closable guide vane having a three dimensional blade type shape whose design is easy and prevent the generation of a cavitation at a low cost. SOLUTION: This water wheel is provided with a vaned wheel, a guide vane formed by arranging plural blades in the periphery direction of the outside of the vaned wheel and in which respective blades are constituted rotatably around the center axis parallel with the rotation axis of the vaned wheel, a stay vane in which plural blades are arranged and formed in the peripheral direction of the outside of the guide vane and a casing for covering the outside of the stay vane. In the closing state of the guide vane, the section vertical to the center axis of the blade of the guide vane 3 is displaced to the rotation direction 11 of the vaned wheel from the upperside toward the lowerside of the guide vane.

8. 发明专利

JP2002021772A HYDRAULIC MACHINE 失效
公开(公告)号：JP2002021772A
公开(公告)日：2002-01-23
申请号：JP2000205559
申请日：2000-07-03
申请人： HITACHI LTD
发明人： NIIKURA KAZUO , SHINMEI KATSUMASA
IPC分类号： F04D15/00 , F04D29/46 , F04D29/56
摘要： PROBLEM TO BE SOLVED: To reduce an input fluctuating speed in a starting/stopping time of pumping, reduce vibration and noises in an operation condition of a hydraulic machine in a stationary pumping operation, and improve hydraulic power efficiency in the hydraulic machine and its operation method. SOLUTION: In this hydraulic machine having a plurality of guide blades of a variable opening arranged in the outer circumference of an impeller and its operation method, in a change of the operation condition such as a shift from a guide blade fully-closed condition to a proper opening condition in starting of the pumping operation, at least one guide blade is opened previously to other guide blades.

9. 发明专利

JP2001041140A IMPELLER FOR HYDRAULIC MACHINERY AND HYDRAULIC MACHINERY 失效
公开(公告)号：JP2001041140A
公开(公告)日：2001-02-13
申请号：JP21708999
申请日：1999-07-30
申请人： HITACHI LTD , KANSAI ELECTRIC POWER CO
发明人： ZEN MUNETOSHI , HATTORI TOSHIO , SHINMEI KATSUMASA , KUWABARA HIROSHI , NISHIO TORU
IPC分类号： B23K9/04 , C23F13/00 , F03B3/12
摘要： PROBLEM TO BE SOLVED: To provide an impeller for a hydraulic machinery, which is formed by welding steel materials of different kinds which can keep an anti-corrosion effect over a long period of time. SOLUTION: A stainless steel welding material is built up substantially like a flat plate on a support member 5 made of carbon cast steel to form at least one coating layer 13, a blade 3 made of stainless steel is welded to the coating layer 13, and welding material made of carbon steel is built up at least on the surface of the support member 5 coming into contact with the coating layer 13 to form a sacrifice anode 19. Thus, wear resistance to the cavitation action is provided so that anti-corrosion of an impeller can be kept over a long period of time by the sacrifice anode 19 having a low speed of consumption due to abrasion.

10. 发明专利

JP2000205101A REVERSIBLE PUMP-TURBINE 失效
公开(公告)号：JP2000205101A
公开(公告)日：2000-07-25
申请号：JP618599
申请日：1999-01-13
申请人： HITACHI LTD , KANSAI ELECTRIC POWER CO
发明人： NARISAWA SATOSHI , SHINMEI KATSUMASA , ITO TAKESHI , NIIKURA KAZUO , YASHIKI TATSURO , FURUTA HIDEO , NISHIO TORU , NAKAGAWA HIROTO , KAKIUCHI TAKASHI
IPC分类号： F03B3/12
摘要： PROBLEM TO BE SOLVED: To provide a reversible pump turbine capable of widening the water head varying range without changing the physical constitution or contour of a runner or causing deterioration of the cavitation characteristics despite varying range of pumping operation. SOLUTION: A pump turbine includes a runner 2 having longer blades 101 and shorter blades 102 in alternate arrangement such that they are at a specified spacing in the circumferential direction, wherein the end position of each shorter blade 102 on the side with water turbine inlet is position between a cylindrical surface 2a formed by the water turbine inlet side of one longer blade 101 and a surface 2b as the minimum open are of the water turbine inlet part formed by each longer blade.

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