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1. 发明专利

JPS61283770A DISCHARGE RING STRUCTURE OF HORIZONTAL-SHAFT MOVABLE VANE TUBULAR WATERWHEEL 失效
公开(公告)号：JPS61283770A
公开(公告)日：1986-12-13
申请号：JP12477485
申请日：1985-06-07
申请人： HITACHI LTD
发明人： KAWAI JUICHIRO , YANAGIDA ISAO
IPC分类号： F03B3/06
摘要： PURPOSE:To reduce the number of parts and reduce the dimension of a power station building by reducing the inside diameter of the edge part of the circular recessed part of a discharge ring smaller than the outside diameter part of a runner vane. CONSTITUTION:A runner 24 and a runner vane 1 are suspended in assembled state and connected to a waterwheel shaft 34. After the connection between the waterwheel shaft 34 and the runner 24 is completed, an upstream side discharge ring 27 temporarily arranged in a draft tube 23 is fastened and fixed onto a case 5 outside a runner guide vane by the adjustment so that the runner seal gap is made uniform. Then, a downstream side discharge ring 28 is suspended and fixed onto a draft tube flange. After a runner boss cover 29 placed in the draft tube 23 is fixed onto the runner 24, a loose flange mechanism between the upstream and downstream side discharge rings 27 and 28 is assembled, and thus assembly work is completed.

2. 发明专利

JPS61279774A HATCH COVER CONSTRUCTION FOR BULB WATER WHEEL 失效
公开(公告)号：JPS61279774A
公开(公告)日：1986-12-10
申请号：JP12234085
申请日：1985-06-05
申请人： HITACHI LTD
发明人： YANAGIDA ISAO , KAWAI JUICHIRO , OSHIMA KATSUHIRO
IPC分类号： F03B3/04
摘要： PURPOSE:To make less heavy and expensive a hatch cover fixed to the frame thereof at a transportation hatch opening by forming the surface exposed to water pressure as a part of a spherical surface. CONSTITUTION:A generator for a bulb water wheel, whose rotor 10 is turned by the rotation of the bulb water wheel including a runner vane 7, is installed in a driving channel, and large-sized components such as a generating rotor 10, a stator frame 11 and a top cover 13 for said generator are transported through a transportation hatch opening 19. This hatch opening 19 is closable with a hatch cover 15 so designed as to be freely detachable. In this constitution, the hatch cover 15 is made to have a spherical shape as a part exposed to pressure at the driving channel 1 and have a circular circumference. And a flange 15a provided on the circular circumference is fastened to a transportation hatch cover frame 16 at the lower part of the transportation hatch opening 19, by using a bolt 14....

3. 发明专利

JPH0229803B2 失效
公开(公告)号：JPH0229803B2
公开(公告)日：1990-07-03
申请号：JP3048985
申请日：1985-02-20
申请人： HITACHI LTD
发明人： TAKEUCHI MAMORU , NEMOTO SADAO , SUZUKI SHIZUO , KAWAI JUICHIRO
IPC分类号： F03B3/04 , E02B9/00 , F03B13/08

4. 发明专利

JPS63159670A VALVE SUPPORTING STRUCTURE FOR VALVE WATER TURBINE 失效
公开(公告)号：JPS63159670A
公开(公告)日：1988-07-02
申请号：JP30373486
申请日：1986-12-22
申请人： HITACHI LTD
发明人： YANAGIDA ISAO , KAWAI JUICHIRO , YOSHIKAWA TSUGIO , INOUE HISAO
IPC分类号： F03B3/04
摘要： PURPOSE:To enable a valve to adjust its center axis height, by providing a level adjusting mechanism, which contains a cylinder and a piston, to be arranged in either one end part of a valve supporter which supports the valve of a valve water turbine to the bottom surface of a conduit. CONSTITUTION:In the case of a valve water turbine which houses a generator in the inside of a valve, containing a valve stator 2, to be driven by rotating the water turbine by a flow of water in a conduit 5, a flange 6-B is formed in the side end part of a conduit of a valve supporter 6 which supports the valve to a bottom surface of the conduit 5, and the flange 6-B forms in its peripheral surface a ring-shaped protrusive part (piston part) which exists extending along the peripheral surface. While a conduit side flange 11 is integrally formed with an anchor plate 12 provided to be embedded to the bottom surface of the conduit 5, and the flange 11 forms a ring-shaped recessed part (cylinderpart)mutually fitted to the above described protrusive part. And the valve enables its center axis height to be adjusted through the valve supporter 6 by supplying fluid pressure to a pressure fluid chamber 15 partitioned between the protrusive and recessed parts.

5. 发明专利

JPS61191710A SUPPORT STRUCTURE OF UNDERWATER STRUCTURE 失效
公开(公告)号：JPS61191710A
公开(公告)日：1986-08-26
申请号：JP3048985
申请日：1985-02-20
申请人： HITACHI LTD
发明人： TAKEUCHI MAMORU , NEMOTO SADAO , SUZUKI SHIZUO , KAWAI JUICHIRO
IPC分类号： F03B3/04 , E02B9/00 , F03B13/08
摘要： PURPOSE:To provide a support structure optimum to strength, by a method wherein the one end of a support column, formed such that insertion members are aligned in an outer shell so that deforming rigidity is decreased in a direction extending parallel to the flow of fluid, is coupled to an underwater structure and the other end is coupled to the securing side. CONSTITUTION:Plural thin sheets 22, which is decreased in thickness (h) in a direction extending parallel to the flow of fluid and decreased in deforming rigidity, are inserted into a circular tabular outer shell 21 to forma support column 20. The one end of a support column 20 is coupled to a valve body 4 of a valve water turbine, and the other end to a concrete structure 1. This decreases bending rigidity in a direction extending parallel to the flow of fluid and increases bending rigidity in a direction extending right angles with the flow, resulting in the possibility to provide support structure of an underwater structure, which is optimum to the strength to be applied thereto.

6. 发明专利

JPS5922110B2 失效
公开(公告)号：JPS5922110B2
公开(公告)日：1984-05-24
申请号：JP14097378
申请日：1978-11-17
申请人： HITACHI LTD
发明人： TERAMOTO TETSUYA , SHINOHARA MORIMICHI , WATANABE YASUSUKE , ITO TAKASHI , ISHIGAMORI ISAO , KAWAI JUICHIRO
IPC分类号： F16K5/20

7. 发明专利

JP2002176747A BLADE DRIVER 审中-公开
公开(公告)号：JP2002176747A
公开(公告)日：2002-06-21
申请号：JP2001280901
申请日：2001-09-17
申请人： HITACHI LTD , HITACHI ENG SERVICE
发明人： KAWASAKI YOSHIHISA , AIZAWA TAKESHI , KAWAI JUICHIRO
IPC分类号： F04D29/00 , F03B3/14 , F04D29/18 , F16D27/12 , H02K7/10
摘要： PROBLEM TO BE SOLVED: To provide a variable pitch propeller driver for preventing a deviation of a mounting angle of a variable pitch blade when an operation of the mounting angle of the blade is not necessary, and when a power to a motor driver is interrupted or a control function of the motor driver is not normally operated in an emergency. SOLUTION: An exciting operation type electromagnetic clutch passed between a reduction gear coupled to a unit carried on a rotary main shaft 1 of an impeller to convert a rotary motion into a reciprocating motion and a motor rotor shaft and combined on the shaft, and a non-exciting operation type electromagnetic clutch, are installed on a steady trestle. If the power to the motor driver is interrupted and a controlling function of the motor driver is not normally operated when an angle operation of the variable pitch blade is not required, exciting is interrupted, a motor rotor shaft and a reduction gear input shaft are disconnected. Meanwhile, the reduction gear input shaft is coupled to a reduction gear case mounted on the rotary main shaft, and rotated at the synchronizing speed with the rotary main shaft.

8. 发明专利

JPH10339255A BLADE DRIVING DEVICE 失效
公开(公告)号：JPH10339255A
公开(公告)日：1998-12-22
申请号：JP14620297
申请日：1997-06-04
申请人： HITACHI LTD , HITACHI ENG SERVICE
发明人： KAWASAKI YOSHIHISA , AIZAWA TAKESHI , KAWAI JUICHIRO
IPC分类号： F03B3/14
摘要： PROBLEM TO BE SOLVED: To obtain a variable pitch blade driving device which can prevent the dislocation of an attachment angle of a variable pitch blade when the angular operation of the variable pitch blade is unnecessitated, or in the emergency case that power supply source to the electric driving device is interrupted or the controlling function of the device is not normally operated. SOLUTION: An excitation operation type electromagnetic clutch 14 and a non-excitation operation type electromagnetic clutch 15 are combined with each other on a through shaft between an electric machine rotor shaft 10a and a decelerator 6 connected to a device mounted on a rotary main shaft of an impeller for converting rotation to reciprocation, and arranged on a static frame 13. In the case that angular operation of a variable pitch blade is not necessitated and power supply source to an electric driving device is interrupted or the controlling function of the device is not normally operated, the excitation is stopped. The electric machine rotor shaft 10a is disconnected from a decelerator input shaft 6a. On the other hand, the decelerator input shaft 6a is connected to a decelerator case 6d attached coaxially therewith, and rotated with the speed synchronous to the rotary main shaft.

9. 发明专利

JPH0835476A GUIDE VANE SHAFT SEALING DEVICE FOR HYDRAULIC MACHINERY 失效
公开(公告)号：JPH0835476A
公开(公告)日：1996-02-06
申请号：JP17511794
申请日：1994-07-27
申请人： HITACHI LTD
发明人： MATSUURA JUN , KARITA MAKOTO , KAWAI JUICHIRO
IPC分类号： F03B3/10 , F03B3/18 , F03B11/00 , F16J15/46
摘要： PURPOSE:To provide a hydraulic machine guide vane shaft sealing device capable of preventing a packing fracture and ensuring the smooth operation of a guide vane. CONSTITUTION:This guide vane shaft sealing device for hydraulic machinery has a guide vane 1 in a water passage formed between an upper cover and a lower cover 5 and the main shaft 1a of the guide vane 1 is rotatably inserted in a bearing 5a for both covers. In addition, a bearing groove 5a is formed on bearing surface at such a position as corresponding to a guide vane edge 1c, and a packing is inserted in the groove 5b for preventing water leakage between the main shaft 5 and the bearing 5a. Regarding the sealing device so constituted, the packing 8 is formed out of an elastic section 8b and a wear resistant complex member 8a at the side of the edge 1c. Also, the cross sectional form of a contact plane between the section 8b and the member 8a is made to have a pressure dispersing curved surface 8c for dispersing hydraulic pressure applied from the side of the elastic body.

10. 发明专利

JPH01315674A ASSEMBLY DEVICE FOR GUIDE VANE IN HYDRAULIC MACHINE AND ASSEMBLING METHOD THEREOF 失效
公开(公告)号：JPH01315674A
公开(公告)日：1989-12-20
申请号：JP14682488
申请日：1988-06-16
申请人： HITACHI LTD
发明人： HIRAMATSU YASUO , MUROI HIROSHI , YAMAGUCHI HIROSHI , KAWAI JUICHIRO
IPC分类号： B23P21/00 , F03B3/18 , F03B11/00
摘要： PURPOSE:To make it possible to assembly a plurality of guide vanes between inner and outer casings by providing an assembling and centering bed device having a plurality of centering surfaces, a guide vane elevating mechanism and a rotary support bed. CONSTITUTION:In order to assemble a plurality of guide vanes 1 between inner and outer casings 2, 3, the outer casing 2 is at first set on a centering reference surface B on an assembling and centering bed device 4 so as to allow the outer casing to be inclined upward. Then one end side main shafts of the guide vane 1 are inserted inclinedly into holes in the outer casing 2 by means of an elevating mechanism 5. Similarly, the inner casing 3 is set on the other centering reference surface C so as to allow the inner casing 3 to be inclined upward, and the end side shafts of the guide vanes 1 are inserted into holes in the inner casing 2 by means of the elevating mechanism 5. Then, the assembling and centering bed device 4 is allowed to stand upright about rotary support bed 7 having a sling 8 and a rotary pin 6, as a fulcrum. Thereafter, the casings 2, 3 are removed from the assembling and centering bed device, and are set at a predetermined position.

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