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1. 发明专利

JPS5970812A Movable vane operating mechanism 失效
标题翻译：可移动的风扇操作机构
公开(公告)号：JPS5970812A
公开(公告)日：1984-04-21
申请号：JP17986782
申请日：1982-10-15
申请人： Hitachi Ltd , Hitachi Techno Eng Co Ltd
发明人： TANJI MASATAKA , ISHIKAWA YOSHIHIDE
IPC分类号： F04D29/18 , F01D7/00 , F03B3/14
CPC分类号： F01D7/00 , F05D2260/74 , F05D2260/76 , Y02E10/223
摘要： PURPOSE:To prolong the life of bearings used in a movable vane operating mechanism by allowing a thrust bearing to rotate only during operation for vane angle, and also to provide possibility if use of bearings with low load capacity. CONSTITUTION:If the vane angle shall be kept constant, a worm 12 is fixed in a position shown by the solid line while a set screw 14 is inserted in a longitudinal groove 9a so as not to allow relative rotation of bearing housings 9, 7, and a brake drum 15 is pressed to a disc 20 on the spindle 1 to allow the housing 9, 7 to rotate together with the spindle 1. Thus the upper and lower bearings 4, 5 receive the vane operating force statically. In order to change the vane angle, the drum 15 is released from the disc 20, and the housings 9, 7 are bracked by a pin stop screw 14 and stop. Then the worm is put in meshing with the wheel 11, the screw 14 drawn off, and the wheel turned, and now the outer bearing housing 7 is rotated to make upward or downward movement. Thus the operational rod 2 is moved up or down to change the vane angle.
摘要翻译：目的：通过允许推力轴承仅在叶片角度操作期间旋转，延长可动叶片操作机构中使用的轴承寿命，并且如果使用低负载能力的轴承，则可提供可能性。构成：如果叶片角度保持恒定，则将蜗杆12固定在实线所示的位置，同时将固定螺钉14插入纵向槽9a中，以不允许轴承壳体9,7的相对旋转，并且制动鼓15被压到主轴1上的盘20上，以允许壳体9,7与主轴1一起旋转。因此，上下轴承4,5静态地接收叶片操作力。为了改变叶片角度，将滚筒15从盘20中释放出来，壳体9,7由销止动螺丝14包围并停止。然后将蜗杆与轮11啮合，螺丝14被拉出，轮转动，现在外轴承壳7旋转以向上或向下移动。因此，操作杆2向上或向下移动以改变叶片角度。

2. 发明专利

JPS58185995A Movable blade operation mechanism 失效
标题翻译：可动叶片操作机构
公开(公告)号：JPS58185995A
公开(公告)日：1983-10-29
申请号：JP6731482
申请日：1982-04-23
申请人： Hitachi Ltd , Hitachi Techno Eng Co Ltd
发明人： TANJI MASATAKA , ISHIKAWA YOSHIHIDE
IPC分类号： F04D29/18 , F04D15/00
CPC分类号： F04D15/0055
摘要： PURPOSE:To simplify the load transmitting route of the blade operation force by connecting an external bearing box with an internal bearing provided independently of the external bearing so that the blade operation force acts directly upon a rotary shaft. CONSTITUTION:With axial movement of an external bearing box 20, an operation rod 5 moves up and down via thrust bearings 10a, 10b, an internal bearing box 8, and a cotter 7. Since the blade operation force due to this vertical movement of the rod 5 acts upon a rotary shaft 6 only, it is sufficient for a bearing box 19 only to restrict the rotary force due to the friction force from both upper and lower bearings 10a, 10b and 18a, 18b. With this contrivance, the load transmitting route of the blade operation force can be simplified.
摘要翻译：目的：通过将外部轴承箱与外部轴承独立设置的内部轴承连接起来，简化叶片操作力的载荷传递路径，使叶片的操作力直接作用在旋转轴上。构成：通过外部轴承箱20的轴向运动，操作杆5通过推力轴承10a，10b，内部轴承箱8和开口7上下移动。由于由于这种垂直运动而产生的叶片操作力杆5只作用在旋转轴6上，轴承箱19只能限制由上下轴承10a，10b和18a，18b两者的摩擦力所产生的旋转力。通过这种设计，可以简化叶片操作力的载荷传递路径。

3. 发明专利

JPS5958196A Corrosion suppressing apparatus for vertical-shaft pump 失效
标题翻译：用于垂直轴泵的腐蚀抑制装置
公开(公告)号：JPS5958196A
公开(公告)日：1984-04-03
申请号：JP15780083
申请日：1983-08-31
申请人： Hitachi Ltd
发明人： ISHIKAWA YOSHIHIDE
IPC分类号： F04D7/06
摘要： PURPOSE: To permit perfect suppression for corrosion by installing an airtight outer cylinder in the outer periphery of a vertical-shaft pump and discharging each liquid in the pump and in the space between the pump and the outer cylinder, by the aid of air, permitting the inside and the outside surfaces of the pump to be perfectly dried when the pump is in rest.
CONSTITUTION: In a pump 5 installed in a water pumping up tank 2, the discharge valve 1 is perfectly closed when the pump stops operation, and air is supplied into the pump through an air pipe 6 from an air tank 13 by opening a valve 10, and the liquid in the pump is removed, and air is supplied into the airtight outer cylinder 4 installed in the outer periphery of the pump from the air tank 13 through an air pipe 7 by opening a valve 9, and thus the liquid on the outer peripheral surface of the pump is removed. Therefore, deterioration of the inner and outer surfaces of the pump can be prevented by covering the outer and inner peripheral parts of the pump by an air layer.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：为了通过在垂直轴泵的外周安装气密的外筒并将泵中的每个液体以及在泵和外筒之间的空间中排出空气，允许完全抑制腐蚀，允许当泵静止时，泵的内表面和外表面将完全干燥。构成：在安装在抽水箱2中的泵5中，当泵停止操作时，排出阀1完全关闭，并且通过打开阀10从空气罐13通过空气管6将空气供给到泵中并且泵中的液体被除去，并且通过打开阀9将空气从空气罐13通过空气管7供给到安装在泵的外周的气密外筒4中，从而将液体除去泵的外周面。因此，可以通过用空气层覆盖泵的外周部分和内周部分来防止泵的内表面和外表面的劣化。

4. 发明专利

JPS616430A Shaft coupling 失效
标题翻译：轴联接
公开(公告)号：JPS616430A
公开(公告)日：1986-01-13
申请号：JP12510984
申请日：1984-06-20
申请人： Hitachi Ltd
发明人： NOGUCHI KENICHI , ISHIKAWA YOSHIHIDE
IPC分类号： F04D13/00 , F04D29/043 , F16D1/05 , F16D1/091 , F16D1/092
CPC分类号： F16D1/092
摘要： PURPOSE:To ensure concentricity by providing a fitting hole and a setscrew on one shaft end of a shaft and a split ring on the other shaft end, and disposing a fastening member which is engaged with the setscrew to press two shafts in a shaft coupling. CONSTITUTION:A fitting hole 17 to which a shaft end of a shaft 6b is fitted is bored in the end portion of a shaft 6a of a pump shaft 6, and a setscrew 18 is threaded on the outer periphery of the shaft 6a. A split ring 20 is disposed on the outer periphery of the shaft 6b. The shafts 6a, 6b are coupled to each other by a fastening member 21, one side of which is engaged with the split ring 20, the other side thereof having a setscrew 22 engaged with the setscrew 18. Thus, the concentricity can be ensured simply.
摘要翻译：目的：通过在轴的一个轴端和另一个轴端上的开口环上提供一个安装孔和一个固定螺丝来确保同心度，并且设置一个与固定螺丝接合的紧固构件，以将两个轴按压在一个联轴器中。构成：在泵轴6的轴6a的端部钻有安装有轴6b的轴端的安装孔17，并且在轴6a的外周上螺纹固定螺丝18。开口环20设置在轴6b的外周上。轴6a，6b通过紧固构件21彼此联接，紧固构件21的一侧与开口环20接合，另一侧具有与固定螺钉18接合的固定螺丝22.因此，可以简单地确保同心度。

5. 发明专利

JPS5572675A CONTROLLING DEVICE FOR WATER LEVEL FLUCTUATION IN SUCTION WATER TANK 失效
公开(公告)号：JPS5572675A
公开(公告)日：1980-05-31
申请号：JP14421478
申请日：1978-11-24
申请人： HITACHI LTD
发明人： ISHIKAWA YOSHIHIDE
IPC分类号： F04D15/00 , F04B49/02
摘要： PURPOSE:To miniaturize a suction water tank and moreover to suppress deterioration in efficiency at starting up and shutting down a pump and occurrence of oscillations and noises by controlling a discharge valve so as to keep a fluctuation of the water level coming in a constant width in accordance with a detection signal for the water level fluctuation. CONSTITUTION:A fluctuation of the water level in a suction water tank 1 is outputted as a detected water level width signal by a water level signal generator 8 and is inputted in an arithmetic unit 9 to decide, as illustrated, whether or not the detection signal (in full line) comes in the water level width (in broken line) preset for steady operation of a pump. If it comes outside the preset level, a difference between the preset water level width and the detected water level width is calculated, and the result is sent to a function generator 10. A valve controlling device 12 therefore turns to control a discharge valve 6 so as to equalize an output from the function generator 10 and an output from a valve opening meter 11, thereby suppressing the water level fluctuation in the suction water tank 1 within a constant width.

6. 发明专利

JPS557911A WATERRFILLING DETECTING METHOD FOR PUMP 失效
公开(公告)号：JPS557911A
公开(公告)日：1980-01-21
申请号：JP7863678
申请日：1978-06-30
申请人： HITACHI LTD , HITACHI SANKI ENG
发明人： TSUCHIDA TAKISHI , WATANABE SHIYOUICHI , ISHIKAWA YOSHIHIDE
IPC分类号： F04D3/00 , F04B49/10 , F04D9/04 , F04D15/00
摘要： PURPOSE:To detect water-filling and prevent the entanglement of admixtures and the generation of faulty operation by installing a pressure detector in the midway of an air extracting pipe and calculating the pressure variation rate inside a pump by calculator to which the output from a timer and said detector is applied as an input. CONSTITUTION:At the highest part of a syphon which consists of a suction pipe 2, pump 1, and a discharge pipe 3, an air extracting pipe 10 is fitted which has a pipe diameter sufficiently small in comparison to the section of the syphon, and at the end of the extraction pipe 10, a vacuum pump 11 is connected. In the midway of the extraction pipe 10, a pressure detector 12 is installed. The numeral 13 designates a calculator, and the numeral 14 designates a timer. The pressure in the pump 1 which forms a syphon is detected by a pressure detector 12, and the time lapse is detected by the timer 14, and the variation rate of the pressure is calculated by the calcurator 13, having each output as input, and the water-filling in the pump 1 is detected.

7. 发明专利

JPS60238493A METHOD FOR OPERATING APPARATUS HANDLING SEAWATER 失效
公开(公告)号：JPS60238493A
公开(公告)日：1985-11-27
申请号：JP9445184
申请日：1984-05-14
申请人： HITACHI LTD
发明人： OZAKI TOSHINORI , ISHIKAWA YOSHIHIDE
IPC分类号： C23F13/00
摘要： PURPOSE:To prevent the corrosion and damage of an apparatus handling seawater for a long period at a low cost by sticking a substance made of Al, Mg, Zn or an alloy thereof to the surface or crevice of each of the constituent parts of the apparatus, immersing the parts in seawater, and allowing them to stand for a long period before operation. CONSTITUTION:A substance made of Al, Mg, Zn or an alloy thereof is stuck to the surface or crevice of each of the constituent parts of an apparatus handling seawater, and the parts are immersed in seawater and allowed to stand for a long period before the operation of the apparatus. The stuck substance corrodes in the seawater, making the seawater around the surfaces of the parts alkaline, or the seawater is made alkaline by the cathodic polarization of the surfaces of the parts. Calcite is deposited on the surfaces of the parts, so the corrosion and damage of the apparatus are prevented. It is desirable that a power, a fine wire or a thin plate or an amorphous substance contained such substances or a peelable solid subtance is properly selected as said substance according to the shape of each spot to which the substance is stuck.

8. 发明专利

JPS61234298A VANE CONTROL DEVICE FOR MOVABLE VANE FLUID PUMP 失效
公开(公告)号：JPS61234298A
公开(公告)日：1986-10-18
申请号：JP7423585
申请日：1985-04-10
申请人： HITACHI LTD
发明人： YAMADA MASAYUKI , ISHIKAWA YOSHIHIDE
IPC分类号： F04D29/18
摘要： PURPOSE:To reduce a load on a thrust bearing by using a material of small coefficient of friction for each slide surface of a bearing for the support of a movable vane axis and a link mechanism for connection between a vane control rod and the said vane axis, and locating the center of a movable vane stem at a specific position. CONSTITUTION:A material having a small coefficient of friction is used to from the slide surfaces of a bearing 50 to support the axis 6a of a movable vane 6, and a link mechanism 70 connecting a vane control rod 3 to the said axis 6a. Also, the center of a stem is positioned to the trailing side of a movable vane 6, relative to the center of water pressure P, so that the moment of rotation M (P.l) arising from a deviation between the centers of the water pressure and the stem will be made small. Then, the relations of F-X 0 and W1+W2>X+F become thereby available, when W1=water thrust, W2=motor rotor load, X=axial force corresponding to rotary vane force due to water pressure and F=axial force due to friction between the bearing 50 and the link mechanism 70. Consequently, the load of a thrust bearing 22 at the side of a motor 8 can be substantially reduced at the time of control for opening and closing the valve.

9. 发明专利

JPS61223373A SHAFT SEALING DEVICE 失效
公开(公告)号：JPS61223373A
公开(公告)日：1986-10-03
申请号：JP6058185
申请日：1985-03-27
申请人： HITACHI LTD
发明人： ISHIKAWA YOSHIHIDE , YAMADA MASAYUKI
IPC分类号： F16J15/24 , F16J15/18 , F16J15/54
摘要： PURPOSE:To absorb deformation of a rotary shaft and deformation due to the external factor of a casing, by a method wherein a packing case, having a built-in shaft sealing body with which a rotary shaft is covered, is attached to a stuffing box through a packing case to provide flexibility. CONSTITUTION:A packing case 2 is mounted to a stuffing box 1 through a packing 3 and a spring 4. A gland packing 5 is mounted to the packing case 2, and is pressed by a gland 6 to shut off the internal and external pressure of a rotary shaft part. The packing case 2, having the gland packing 5, is mounted by the packing 3 and a spring 4, and thereby the packing case freely follows mutual displacement between a rotary shaft 7 and the stuffing box 1, and a load produced due to displacement is prevented from transmission to the rotary shaft 7. This absorbs deformation of the rotary shaft and deformation occurring due to the external factor of the casing.

10. 发明专利

JPS58138280A GENERATION PREVENTIVE DEVICE OF WATER VORTEX IN PUMP SUCTION WATER TANK 失效
公开(公告)号：JPS58138280A
公开(公告)日：1983-08-17
申请号：JP1870682
申请日：1982-02-10
申请人： HITACHI LTD
发明人： ISHIKAWA YOSHIHIDE
IPC分类号： F04D29/66 , F04B53/00 , F04B21/00
摘要： PURPOSE:To prevent generation of a swirl flow in the vicinity of a suction port and a vortex in water, by protruding both side parts of a pump respectively in a rear wall side bottom face in a suction water tank and forming said parts to a gradient surface. CONSTITUTION:Water in the vicinity of both side walls 3b, 3c of the forward flow waters in a suction water tank 3 as shown by an arrow head 5 in the drawing flows along each gradient surface 4 integrally formed to the front of each botom face protruded part 3a2, each gradient surface 3a2' and protruded part 3a2. Accordingly, a flow of water causes no turbulence to uniformly distribute the front flow of the tank 3 further the flow is smoothly introduced to a pump suction port 2 at an inflow angle theta, and generation of a swirl flow can be prevented.

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