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21. 发明专利

JPS59165871A Multistage hydraulic machine 失效
标题翻译：多级液压机
公开(公告)号：JPS59165871A
公开(公告)日：1984-09-19
申请号：JP3872683
申请日：1983-03-08
申请人： Hitachi Ltd
发明人： HITOMI ICHIROU
IPC分类号： F03B3/18 , F03B15/00 , F03B15/04
CPC分类号： F03B15/00 , Y02E10/223 , Y02E10/226
摘要： PURPOSE:To prevent the deviation of the opening of a guide vane in each stage by detecting the deviation of a servomotor in each stage and adjusting the guantity of lift of the main distributing valve for a servomotor which is to be adjusted, based on the detected signals. CONSTITUTION:The openings of the upper- and lower-stage guide vanes are detected by means of guide-vane opening detectors 19a, 19b respectively, and the quantity of deviation is fed to a lift quantity correcting device 23 through an amplifier. The lift quantity correcting device 23 changes the fulcrum positioned midway on a link 18b, in accordance with the quantity of deviation and corrects the lift of a main distribution valve 10b by a certain amount, thereby preventing the deviation of the opening of a guide vane in each stage during a long time operation.
摘要翻译：目的：通过检测各级伺服电机的偏差，根据检测到的要调整要调整的伺服电机的主分配阀的升程重心，防止各级导叶的开度偏差信号。构成：分别通过导向叶片开度检测器19a，19b检测上下导向叶片的开口，通过放大器将偏差量送入升力量校正装置23。升程量校正装置23根据偏差量改变位于连杆18b中途的支点，并将主分配阀10b的升程校正一定量，从而防止导叶的开度偏离每个阶段在长时间的操作。

22. 发明专利

JPS5965577A Protective device for hydraulic machinery 失效
标题翻译：液压机械保护装置
公开(公告)号：JPS5965577A
公开(公告)日：1984-04-13
申请号：JP17462482
申请日：1982-10-06
申请人： Hitachi Ltd
发明人： KUWABARA HISAO , TAKIGUCHI KEITAROU , HITOMI ICHIROU
IPC分类号： F03B15/18
CPC分类号： F03B15/18 , Y02E10/226
摘要： PURPOSE:To improve safety in failures by continuously giving closing commands and slow speed commands to a servo motor through the operation of a command change-over unit for back-up when a governor means is not interlocked with the servo motor for driving a flow regulating means. CONSTITUTION:A distributing valve 4 is controlled through a link 2 and a pilot valve rod 3 by a speeder 1 for giving opening and closing commands to controllably supply pressurized oil from a pressurized oil source to a servo motor 5. In a control unit for controlling a flow regulating means such as a movable guide valve through a rod 5 by power of the servo motor 5, a servo motor opening setting cam 15 is mounted on a return shaft 12 interlocked with the rod 6 and rotated through a return wire 7. And a change-over valve 16 is controlled by said cam 15 to operate a closing speed limiting cylinder 17. Also, a change-over valve 19 provided parallel to the change-over valve 16 is changed over by the descending movement of a weight 11 when a wire 7 is cut, so that the descending speed of said valve rod 3 can be limited through the cylinder 17.
摘要翻译：目的：通过在调速器装置不与伺服电机互锁以驱动流量调节的情况下，通过运行指令转换单元来连续给伺服电机提供闭合指令和速度指令，从而提高故障安全性手段。构成：分配阀4由加速器1通过连杆2和先导阀杆3控制，用于提供打开和关闭命令，以可控地将加压油从加压油源供应到伺服电动机5.在用于控制的控制单元诸如通过伺服马达5的动力通过杆5的可移动导向阀的流量调节装置，安装在与杆6互锁并通过回丝7旋转的返回轴12上的伺服马达开度设定凸轮15。转换阀16由所述凸轮15控制以操作闭合速度限制缸17.此外，平行于转换阀16设置的转换阀19通过重物11的下降运动而被切换电线7被切断，使得阀杆3的下降速度可以通过气缸17被限制。

23. 发明专利

JPS57126570A Exhaust gas controlling device for hydraulic machine 失效
标题翻译：液压机排气控制装置
公开(公告)号：JPS57126570A
公开(公告)日：1982-08-06
申请号：JP1021881
申请日：1981-01-28
申请人： Hitachi Ltd
发明人： OKUMURA HIROSHI , HITOMI ICHIROU
IPC分类号： F03B15/18 , F03B15/22
CPC分类号： F03B15/22 , Y02E10/226
摘要： PURPOSE:To obtain a highly reliable exhaust gas controlling device for a hydraulic machine by being constituted by a detector for detecting a position of a moving part of an exhaust valve in itself and a device for issuing a command of exhaust valve-close exclusively or giving an alarm simultaneously. CONSTITUTION:A C-NC contact 101 of a position switch 23 for detecting a position where an exhaust valve is entirely closed is closed regardless of an operating condition of a main machine if the exhaust valve is opened even only slightly when constructed such that the exhaust valve is closed when an electromagnet is energyzed. As far as this condition is kept, a time limit relay 102 continues to count time. And, when a prescribed interval of time lapses, a time limit contact 103 is closed, an electromagnet 105 for a exhaust valve close-operation is energyzed exclusively to permit the exhaust valve to be closed irrespective of an original exhaust valve-close controlling circuit. Simultaneously, an alarm is issued by the other time limit close contact 104, and thereby it is possible to take a necessary measure even if the exhaust valve would no be closed.
摘要翻译：目的：为了获得一种用于液压机械的高度可靠的排气控制装置，其由用于检测排气门本身的运动部分的位置的检测器和用于发出排气门指令的装置专门或给予同时报警构成：用于检测排气门完全关闭的位置的位置开关23的C-NC接点101，如果排气门在主排气门的运行状态下打开，即使仅在排气门打开当电磁铁通电时，阀门关闭。只要保持该条件，则时限继电器102继续计时。并且，当规定的时间间隔过去时，关闭限时触点103，排气门关闭操作的电磁体105专门用于允许排气门被关闭而不管原始排气关闭控制电路如何。同时，通过另一个时间限制关闭触点104发出报警，从而即使排气阀不被关闭也可以采取必要的措施。

24. 发明专利

JPS56129524A TEMPERATURE CHARACTERISTIC MALFUNCTION DETECTING SYSTEM FOR BEARING TEMPERATURE OR LIKE 失效
公开(公告)号：JPS56129524A
公开(公告)日：1981-10-09
申请号：JP3162280
申请日：1980-03-14
申请人： HITACHI LTD
发明人： MAEKAWA MUNEO , HITOMI ICHIROU , SAKAGUCHI KATSUMI
IPC分类号： H02H5/04 , F16C17/24 , G01K3/00 , G01K7/00 , H02H7/06

25. 发明专利

JPS5554674A COOLING WATER DRAWING METHOD FOR HYDRAULIC MACHINE 失效
公开(公告)号：JPS5554674A
公开(公告)日：1980-04-22
申请号：JP12621378
申请日：1978-10-16
申请人： HITACHI LTD
发明人： SATOU ASAMI , TAKAGI NOBUSUKE , HITOMI ICHIROU
IPC分类号： F03B11/00
摘要： PURPOSE:To make it possible that hydraulic equipments is stably cooled by cooling water of constant temperature even in special operating condition, by drawing cooling water for one hydraulic machine from suction pipe of another hydraulic machine. CONSTITUTION:There are two hydraulic machines W1 and W2 juxtaposed, one machine W2 of which is provided with suction pipe 5 connected via screen 6 to cooling water supply pipe 7. Cooling water from supply pipe 7 is directed to varions equipments of other hydraulic machine W1 for cooling them, and the water heated therein is discharged through cooling water discharge pipe 18 which is connected to suction pipe 5 of machine W1. Accordingly, even if the hydraulic machine W1 is in a special operating condition such as warm-up running, phase regulating operation or the like, cooling water of stable temperature can be supplied so as to accomplish stabilized cooling for equipments with minimum amount of pipes and fittings required therefor.

26. 发明专利

JPS5274738A CHARGING WATER METHOD OF PENSTROCK AND UPPER STORAGE POND 失效
公开(公告)号：JPS5274738A
公开(公告)日：1977-06-23
申请号：JP15050675
申请日：1975-12-19
申请人： HITACHI LTD
发明人： INOUE HISAO , HITOMI ICHIROU
IPC分类号： F03B15/04 , F03B3/00 , F03B15/14
摘要： PURPOSE:To perform charging water in a penstock and an upper storage pond stably by using a pump water wheel without using an initial charging water pump.

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