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51. 发明专利

JP2004312929A Secondary exciting device for wound type induction machine 审中-公开
公开(公告)号：JP2004312929A
公开(公告)日：2004-11-04
申请号：JP2003105361
申请日：2003-04-09
申请人： Toshiba Corp , 株式会社東芝
发明人： KAGEYAMA TAKAHISA , ISHIZUKI TERUYUKI
IPC分类号： F03B15/04 , H02J3/24 , H02P9/00
CPC分类号： Y02E10/226
摘要： PROBLEM TO BE SOLVED: To obtain a secondary exciting device for a wound type induction machine which is restricted so that the slip frequency will not exceed the output voltage capability of a frequency converter, even if a system frequency fluctuates. SOLUTION: The secondary exciting device for the wound type induction machine is so composed that a primary winding is connected to a power system and AC excitation is executed to a secondary winding by the frequency converter at an arbitrary frequency. A frequency detector, which detects the system frequency, is connected to the primary side of the wound type induction machine. The system frequency, which is detected by the frequency detector, is added to a slip frequency command upper limit value and a slip frequency command lower limit value of a rotational speed limiter, respectively. Accordingly, the fluctuations in the system frequency are added. The secondary exciting device for the wound type induction machine, in which the slip frequency will not deviate from a specified value even if the system frequency fluctuates, is provided. COPYRIGHT: (C)2005,JPO&NCIPI

52. 发明专利

JP2004263681A Power generating facility using pump reversal hydraulic turbine 有权
公开(公告)号：JP2004263681A
公开(公告)日：2004-09-24
申请号：JP2003057731
申请日：2003-03-04
申请人： Ebara Corp , 株式会社荏原製作所
发明人： UCHIDA YOSHIHIRO , KASAHARA TORU , MAYUZUMI KATSUNORI , HOSOI TOSHIHIRO , KAJIUCHI TOSHINOBU
IPC分类号： F03B15/02 , F03B15/04
CPC分类号： Y02E10/226
摘要： PROBLEM TO BE SOLVED: To provide a power generating facility using a pump reversal hydraulic turbine capable of efficiently utilizing flowing water for power generation even when the inexpensive pump reversal hydraulic turbine having a simple structure is used.
SOLUTION: In the power generating facility using the pump reversal hydraulic turbine, two pump reversal hydraulic turbines 40 and 50 are disposed in a pipe 30 for connecting a clean water tank 10 to a sewage tank 20 so that they can be switched over to series or parallel. A control means 60 switches the connection to series when the flow rate of the water made to flow from the clean water tank 10 to the sewage tank 20 is low, and switches the connection to parallel when the flow rate is high. The power is generated by power generators 41 and 51 connected to the reversal hydraulic turbines 40 and 50.
COPYRIGHT: (C)2004,JPO&NCIPI

53. 发明专利

JP2004251145A Hydraulic power unit 审中-公开
公开(公告)号：JP2004251145A
公开(公告)日：2004-09-09
申请号：JP2003039832
申请日：2003-02-18
申请人： Toto Ltd , 東陶機器株式会社
发明人： KUMAMOTO HIROSHI
IPC分类号： F03B15/04 , F03B17/06
CPC分类号： Y02E10/226 , Y02E10/28
摘要： PROBLEM TO BE SOLVED: To provide a hydraulic power unit utilizing water pressure generated by a water flow passing through a water supply port, suitable especially for supplying constant flow of water.
SOLUTION: The hydraulic power unit comprises a first fluid passage provided with a diaphragm valve-type constant flow valve on its upstream side and a hydraulic power generating device for generating electric power by rotating a water turbine on its downstream side and a second fluid passage for bypassing the first fluid passage and discharging the flow unnecessary for power generation. The unit is equipped with a distance detecting means for detecting the displacement amount of an opening control plate of the diaphragm valve type constant flow valve at a downstream side facing part of the opening control plate. The unit is also equipped with an estimating means for estimating pressure of the first fluid passage according to the output of the distance detecting means and estimating the flow through the first/second fluid passages based on cross-section areas of the first/second fluid passages.
COPYRIGHT: (C)2004,JPO&NCIPI

54. 发明专利

JP2004183618A Automatic operation controller of water wheel generator 有权
标题翻译：水轮发电机自动操作控制器
公开(公告)号：JP2004183618A
公开(公告)日：2004-07-02
申请号：JP2002354499
申请日：2002-12-06
申请人： Hitachi Industrial Equipment Systems Co Ltd , 株式会社日立産機システム
发明人： SATO KOICHI , TANAKA YUJI , FUJITA YUKIHISA , TAKAHASHI SHINICHI , TAKAYAMA EIJI , ISOYAMA EIJI
IPC分类号： F03B15/04
CPC分类号： Y02E10/226
摘要： PROBLEM TO BE SOLVED: To provide an operation controller of a water wheel generator capable of suitably performing operation control when an automatic operation by a simple operation and water amount and effective head of a water wheel vary.
SOLUTION: When the detected effective head becomes a start effective head or more, the controller starts an operation. When the detected effective head becomes a stop effective head or less, the controller stops the operation.
COPYRIGHT: (C)2004,JPO&NCIPI
摘要翻译：要解决的问题：提供一种水轮发电机的操作控制器，其能够通过简单的操作和水量的自动操作以及水轮的有效头部变化而适当地执行操作控制。
解决方案：当检测到的有效头变为起始有效头或更多头时，控制器开始操作。当检测到的有效头变为停止有效头或更小时，控制器停止操作。版权所有（C）2004，JPO＆NCIPI

55. 发明专利

JP2004060588A Air supply device of hydraulic machinery 审中-公开
标题翻译：液压机械空气供应装置
公开(公告)号：JP2004060588A
公开(公告)日：2004-02-26
申请号：JP2002222822
申请日：2002-07-31
申请人： Toshiba Corp , 株式会社東芝
发明人： NAKAMURA TAKANORI , SHIMIZU KOICHIRO
IPC分类号： F03B11/04 , F03B15/04
CPC分类号： Y02E10/226
摘要： PROBLEM TO BE SOLVED: To provide an air supply device of hydraulic machinery capable of being stably operated by properly controlling according to the operating conditions of the hydraulic machinery or holding a desirable position according to the state of waterstream in the air supply device suppressing whirl.
SOLUTION: In this air supply device, a rotating air supply tube 13 rotating about an axis generally vertical to the axis of a suction tube 9 is installed in the suction tube 9. The rotating air supply tube 13 comprises an opening part 15 diagonally cut out relative to the axis of the tube, and the opening part faces the inside of an upper suction tube 9a. The other end of the rotating air supply tube 13 is connected to the suction tube 14 opening to the atmosphere for taking in the external air. The rotating air supply tube 13 is rotated by an instruction from a control device 18, and the opening part 15 following the operation faces downstream relative to the direction of a swirl flow.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种通过根据液压机械的操作条件适当地控制或者根据空气供应装置中的水流状态保持期望位置来稳定地操作的液压机械的供气装置抑制旋风解决方案：在该供气装置中，旋转空气供给管13围绕吸入管9的轴线大致垂直地旋转。旋转空气供给管13包括开口部15 相对于管的轴线对角地切出，并且开口部分面向上部吸入管9a的内部。旋转空气供给管13的另一端与吸入外部空气的吸入管14连接。旋转空气供给管13通过来自控制装置18的指令旋转，并且操作后的开口部15相对于旋转流动的方向面向下游。版权所有（C）2004，JPO

56. 发明专利

JP3494719B2 Hydraulic machine 失效
公开(公告)号：JP3494719B2
公开(公告)日：2004-02-09
申请号：JP27322294
申请日：1994-11-08
申请人：株式会社東芝
发明人：修下釜 , 浩小宮
IPC分类号： F03B3/10 , F03B11/00 , F03B15/04 , F03B15/14
CPC分类号： Y02E10/223 , Y02E10/226

57. 发明专利

JP2004023971A Governor controller for hydraulic machinery 审中-公开
公开(公告)号：JP2004023971A
公开(公告)日：2004-01-22
申请号：JP2002179502
申请日：2002-06-20
申请人： Hitachi Engineering & Services Co Ltd , Hitachi Ltd , 株式会社日立エンジニアリングサービス , 株式会社日立製作所
发明人： KATSUMURA TAKASHI , YOKOYAMA TAKEO , AIZAWA KOJI
IPC分类号： F03B15/04 , F03B15/08 , H02P9/04
CPC分类号： Y02E10/226
摘要： PROBLEM TO BE SOLVED: To provide a controller for a water wheel governor reduced in size wherein the results of measurement are easily viewable. SOLUTION: The controller for the water wheel governor is provided with a digital speed detecting facility for detecting digital speed signals, in a place where a rotational speed value and an adjusted rotational speed value are outputted to a digital computing portion. The controller is further provided with a digital opening detecting facility for detecting digital opening signals in place where an opening signal is outputted. The digital speed detecting facility and the digital opening detecting facility are connected with an electrical display controller. Thus, the digital amount of speed and the digital amount of opening are displayed on the electrical display controller. COPYRIGHT: (C)2004,JPO

58. 发明专利

JP2003324992A Variable speed pumped storage power generator and its stopping method 有权
标题翻译：可变速度储存发电机及其停机方法
公开(公告)号：JP2003324992A
公开(公告)日：2003-11-14
申请号：JP2002132394
申请日：2002-05-08
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： KANZAKI AKIRA , SHIMOMURA MASARU
IPC分类号： F03B3/10 , F03B15/04 , H02P3/00 , H02P9/00
CPC分类号： Y02E10/223 , Y02E10/226
摘要： PROBLEM TO BE SOLVED: To obtain a pumped storage power generator in which any one of emergency stop, abrupt stop and normal stop can be carried out stably with no possibility of deviating from a variable speed range. SOLUTION: When an abrupt stop command is delivered from a pump turbine 1, a flow rate regulating means 90 restricts the quantity of inflow water at a maximum rate. A converter controller 20 stores the frequency and phase of the exciting current of a generator-motor 2 at the time of delivery of the abrupt stop command and excites the generator-motor 2 while fixing the exciting current to the stored frequency and phase so that the generator-motor operates as a synchronous generator. Since the output from the generator-motor 2 decreases through synchronization action as a synchronous generator when the quantity of inflow water to the pump turbine 1 is restricted, rotational variation is suppressed in the output reduction process and the operation can be stopped stably. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了获得可以稳定地执行紧急停止，突然停止和正常停止的任一个的抽水蓄能发电机，不可能偏离变速范围。解决方案：当从泵水轮机1输送突然停止命令时，流量调节装置90以最大速率限制流入水量。 A转换器控制器20在发送突发停止命令时存储发电机2的励磁电流的频率和相位，并且在将励磁电流固定到存储的频率和相位的同时激励发电机2，使得发电机 - 电动机作为同步发电机工作。当通过同步发电机的同步动作作为同步发电机时，由于发电机2的输出受到限制，所以在输出降低处理中抑制了旋转变动，能够稳定地停止运转。版权所有（C）2004，JPO

59. 发明专利

JP2003262180A EXCESSIVE SPEED PREVENTING DEVICE FOR HYDRAULIC POWER GENERATOR 审中-公开
公开(公告)号：JP2003262180A
公开(公告)日：2003-09-19
申请号：JP2002061108
申请日：2002-03-06
申请人： TOKYO ELECTRIC POWER CO
发明人： INAGAKI MORIHITO , SUZUKI AKIRA
IPC分类号： F03B3/06 , F03B15/04 , F03B15/18 , F03B17/06
摘要： PROBLEM TO BE SOLVED: To securely prevent the rotation of a hydraulic power generator at an excessive speed. SOLUTION: This excessive speed preventing device for a hydraulic power generator 1 for receiving a water flow inside of a water passage 5 with a runner vane 20, which is fitted to a runner base 13 freely to rotate, to rotate the runner 3 and for transmitting the rotation of the runner 3 to a power generator 4 is provided with a fitting angle change mechanism for changing fitting angle of the runner base 2 in relation to a runner boss 13 over from the rated rotatable angle to a feathering angle and an operation regulating mechanism for regulating operation of the fitting angle change mechanism to fix the runner base 20 to the rated rotatable angle. When an electric load to be applied to the power generator 4 is eliminated, regulation of the fitting angle change mechanism by the operation regulating mechanism is released. COPYRIGHT: (C)2003,JPO

60. 发明专利

JP2003214313A METHOD OF CONTROLLING SPEED GOVERNING CONTROLLER AND METHOD OF DETECTING ANOMALY 审中-公开
公开(公告)号：JP2003214313A
公开(公告)日：2003-07-30
申请号：JP2002014957
申请日：2002-01-24
申请人： TOSHIBA CORP , TOSHIBA SYST TECH
发明人： NOGUCHI TETSUYA , SHINOHARA AKIRA , TOMIYASU HISAYUKI , MINOURA KOJI
IPC分类号： F03B3/18 , F03B15/04 , F03B15/22 , G05B11/36 , G05B23/02
摘要： PROBLEM TO BE SOLVED: To provide a speed governing controller that eliminates a mechanical part and that controls a guide vane operating device that can shorten a period required for maintenance and adjustment with low cost. SOLUTION: A feedback control of a main distributing valve is performed by simulating operating characteristics using a software without taking in an actual opening of the main distributing valve. Also, an anomaly is detected using a correlation between the simulated opening of the main distributing valve and the opening of the guide vane. Accordingly, it becomes possible to eliminate a hardware to measure an actual opening of the main distributing valve and improve reliability. COPYRIGHT: (C)2003,JPO

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