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1. 发明专利

JPS628635B2 失效
公开(公告)号：JPS628635B2
公开(公告)日：1987-02-24
申请号：JP14839480
申请日：1980-10-24
申请人： HITACHI LTD
发明人： SATO ASAMI , TAKAGI NOBUSUKE , OKUMURA HIROSHI
IPC分类号： F03B11/00 , F03B11/08 , F03B15/00 , F03B15/04 , F04D15/02

2. 发明专利

JPS6229770A CONTROL METHOD FOR HYDRAULIC MOTOR 失效
公开(公告)号：JPS6229770A
公开(公告)日：1987-02-07
申请号：JP16760285
申请日：1985-07-31
申请人： HITACHI LTD
发明人： OKUMURA HIROSHI , OOTA JIRO , MORI CHIHARU
IPC分类号： F03B15/06
摘要： PURPOSE:To obtain a simplified and low-priced further efficient flow and rotary speed control devices, by controlling a rotary speed quite separating from control of a flow control means through adjustment of a variable load separately provided for controlling the rotary speed. CONSTITUTION:The control method, supplying an amount subtracting a load required for a power system L from the output of a water turbine T to a variable load VR, controls a rotary speed to a fixed value together with the output of the water turbine and the total load. Under this condition, if the load for the power system L decreases, the rotary speed increases, and the method, increasing a load value of the variable load VR in accordance with the increase amount of said rotary speed, controls the rotary speed to a fixed value together with the total load. Reversely, when the power system load increases, the rotary speed decreases, and the method, decreasing the load value of the variable load VR in accordance with the decrease amount of said rotary speed, controls the rotary speed.

3. 发明专利

JPS5942882B2 JPS5942882B2 - 失效
公开(公告)号：JPS5942882B2
公开(公告)日：1984-10-18
申请号：JP5209478
申请日：1978-04-29
申请人： Hitachi Ltd
发明人： KUWABARA HISAO , UCHAMA HISAYA , OKUMURA HIROSHI
IPC分类号： G05B11/60 , F03B15/06
CPC分类号： F03B15/06 , Y02E10/226

4. 发明专利

JPS59131775A Control for guide vane of pump water wheel 失效
标题翻译：控制水泵轮的指导
公开(公告)号：JPS59131775A
公开(公告)日：1984-07-28
申请号：JP24221983
申请日：1983-12-23
申请人： Hitachi Ltd
发明人： KUWABARA HISAO , OKUMURA HIROSHI
IPC分类号： F03B15/04 , F03B3/18 , F03B15/18
CPC分类号： F03B3/183 , Y02E10/223 , Y02E10/226
摘要： PURPOSE:To avoid surely the separation of water column due to S-shape characteristic by a method wherein a timing to shift the guide vane from sudden closing operation to the opening operation forcibly and another timing to shift the same from the opening operation to the sudden closing are controlled correctly. CONSTITUTION:When the load of the pump is cut off, the guide vane is closed suddenly and the guide vane is opened forcibly by detecting that the value of dQ1/DN1 (Q1=QH , N1=NH , Q: the flow amount of the water wheel, N: rotating speed, H: effective head) has become smaller than certain negative value while the opening operation is continued while the value of dQ1/dH1 is positive. The guide vane is closed suddenly under a condition that the value of dQ1/dH1 has turned from positive to negative. According to this method, the timing to shift the guide vane from the sudden closing to the opening operation forcibly and the timing to shift the same from the opening operation to the sudden closing can be controlled correctly, therefore, the separation of the water column caused by the abnormal increase of an upstream side water pressure as well as the abnormal reduction of a downstream side water pressure, both due to the S-shape characteristic, may be avoided surely.
摘要翻译：目的：为了避免由于S形特征而导致的水柱的分离，其中将导向叶片从突然关闭操作转移到开启操作的时间强制的另一个定时将其从打开操作转移到突然关闭正确控制。构成：当泵的负载被切断时，引导叶片突然关闭，并通过检测到dQ1 / DN1（Q1 = QH 1/2，N1 = NH <1 / 2>，Q：水轮的流量，N：转速，H：有效头）在打开动作持续的同时，dQ1 / dH1的值为正时变得小于一定的负值。引导叶片在dQ1 / dH1的值从正转变为负值的条件下突然闭合。根据该方法，可以正确地控制将导向叶片从突然关闭向开启操作强制移动的定时以及将其从打开操作转移到突然关闭的定时，从而导致水柱的分离通过上游侧水压的异常增加以及由于S形特性导致的下游侧水压的异常下降，可以被可靠地避免。

5. 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。

6. 发明专利

JPH03511B2 失效
公开(公告)号：JPH03511B2
公开(公告)日：1991-01-08
申请号：JP2262382
申请日：1982-02-17
申请人： HITACHI LTD
发明人： OKUMURA HIROSHI
IPC分类号： F03B15/00 , F03B15/04 , F03B15/14

7. 发明专利

JPH0125894B2 失效
公开(公告)号：JPH0125894B2
公开(公告)日：1989-05-19
申请号：JP11024780
申请日：1980-08-13
申请人： HITACHI LTD
发明人： SATO ASAMI , TAKAGI NOBUSUKE , OKUMURA HIROSHI
IPC分类号： F03B11/00

8. 发明专利

JPS6147980B2 失效
公开(公告)号：JPS6147980B2
公开(公告)日：1986-10-22
申请号：JP5921477
申请日：1977-05-20
申请人： HITACHI LTD
发明人： KUWABARA HISAO , OKUMURA HIROSHI
IPC分类号： F03B15/04 , F03B3/10 , F03B15/06

9. 发明专利

JPS6024314B2 失效
公开(公告)号：JPS6024314B2
公开(公告)日：1985-06-12
申请号：JP8821476
申请日：1976-07-26
申请人： HITACHI LTD
发明人： KUWABARA HISAO , YOKOYAMA TOSHIAKI , OKUMURA HIROSHI
IPC分类号： F03B15/04 , F03B15/00 , F03B15/10

10. 发明专利

JPS53143841A CONTROL OF PUMP WATER WHEEL 失效
公开(公告)号：JPS53143841A
公开(公告)日：1978-12-14
申请号：JP5921377
申请日：1977-05-20
申请人： HITACHI LTD
发明人： KUWABARA HISAO , OKUMURA HIROSHI
IPC分类号： F03B15/04 , F03B3/10 , F03B15/06
摘要： PURPOSE:To prevent the occurrence of abnormal water pressure, by controlling guide vanes to reduce or eliminate an S-effect in a high head pump water wheel which is so thought that the S-characteristics in a water wheel range are indispensable.

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