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21. 发明专利

JPS642762B2 失效
公开(公告)号：JPS642762B2
公开(公告)日：1989-01-18
申请号：JP10709981
申请日：1981-07-10
申请人： HITACHI LTD
发明人： HONDA NAGANOBU , KUWAJIMA HIDESUMI
IPC分类号： F01D19/00 , F01D19/02 , F01D25/10 , F01K7/24

22. 发明专利

JPS648302A OVERRUN PREVENTING METHOD FOR STEAM TURBINE 失效
公开(公告)号：JPS648302A
公开(公告)日：1989-01-12
申请号：JP15964387
申请日：1987-06-29
申请人： HITACHI LTD
发明人： KANEDA HIDEAKI , IIJIMA TADAHIKO , YANAGIDA SADAO , KUWAJIMA HIDESUMI
IPC分类号： F01D21/02 , F01D21/14
摘要： PURPOSE:To prevent a steam turbine from overrunning and operating at low frequency by quickly closing a steam flow rate control valve on the basis of the condition set in connection with each of loads applied before and after the load of the steam turbine is cut off when the steam turbine load is going to be prevented from overrunning by opening and closing the control valve at the cut-off time of the load. CONSTITUTION:Main steam overheated by a boiler 1 runs through a main steam stop valve 2 and a steam regulation valve 3 in order and then into a high pressure turbine 4 to operate therein. The steam is returned to the boiler 1 to be reheated, runs through a reheated steam stop valve 5 and an intercept valve 6 in order and then into a medium-pressure turbine 7 to perform therein. The steam then flows into a low-pressure turbine 9 via a crossover pipe 8, acts therein and condensed by a condensor 10. When the load of the steam turbine is cut off, the intercept valve 6 is opened and closed to prevent the steam turbine from overrunning. In such case the intercept valve 6 is closed quickly based on the condition set in connection with each of loads exhibited before and after the cut-off time.

23. 发明专利

JPS63229334A FOREIGN MATTER DETECTOR 失效
公开(公告)号：JPS63229334A
公开(公告)日：1988-09-26
申请号：JP6235887
申请日：1987-03-19
申请人： HITACHI LTD
发明人： KUWAJIMA HIDESUMI , ARAKI TSUTOMU
IPC分类号： G01H3/00 , F01D25/00 , G01H17/00 , G21C17/04
摘要： PURPOSE:To always monitor the amount and size of fine solid particles in a steam stream, by a method wherein a sound-sensitive means is provided in a steam pipe and the sound generated at the time of the collision of the fine solid particles is sensed to be amplified, recorded and displayed. CONSTITUTION:A sound sensing rod 14 for sensing the collision sound of fine solid particles is inserted in a steam pipe and a sound-sensitive part 13 is provided to the center of the sensing rod 14. When steam containing fine solid particles flows through the steam pipe, the sound generated at the time of the collision of the fine solid particles is sensed by the sound-sensitive part 13 to be received by AE (Acoustic Emission) sensor 15. The output of the sensor 15 passes through a filter 21, which permits the frequency component of the collision signal to pass, through a preamplifier 16, a noise filter 17 and a main amplifier 18 to enter a signal analyser 22. A discrimination wave form 23 preliminarily measured in order to discriminate the amount and the size of the fine solid particles is inputted to the apparatus 22 and the analyzed data is displayed on a monitor 24 along with the wave form and recorded on a recorder 25 to be monitored.

24. 发明专利

JPS61268806A METHOD OF WARMING-UP CASING OF STEAM TURBINE 失效
公开(公告)号：JPS61268806A
公开(公告)日：1986-11-28
申请号：JP11042585
申请日：1985-05-24
申请人： HITACHI LTD
发明人： KANEDA HIDEAKI , KUWAJIMA HIDESUMI
IPC分类号： F01D25/10
摘要： PURPOSE:To prevent production of excessive thermal stress, by a method where in, in a re-heat condensate type steam turbine, when warming-up of a casing is carried out before ventilation during the starting of cooling-down, an avoid ance condition based on a metal temperature is added to a casing warming-up starting condition. CONSTITUTION:A reheat condensate type steam turbine plant is provided with a boiler 1, high pressure, middle pressure, and low pressure turbines 5, 10, 12, and a condenser 13. During warming-up of a casing in the plant, when the metal temperature of a high pressure first stage rear inner wall is below a specified value x deg.C (usually about 150 deg.C) or less at the starting point of the starting of warming-up of a casing, warming-up of a casing is effected as usual. Meanwhile, when exceeding the x deg.C, the casing is completely prevented from being warmed-up until a boiler is ignited. On-off control is performed so that, when a high pressure first stage is decreased to lower than the x deg.C after igni tion, a warming-up valve 17 is opened with a specified opening, and the warm ing-up valve 17 is fully closed when increased to y deg.C (a set value 10-30 deg.C higher than x deg.C), warming-up of the casing is executed.

25. 发明专利

JPS6185506A Warming up method of steam turbine 失效
标题翻译：蒸汽涡轮加热方法
公开(公告)号：JPS6185506A
公开(公告)日：1986-05-01
申请号：JP20706284
申请日：1984-10-04
申请人： Hitachi Eng Co Ltd , Hitachi Ltd
发明人： NISHINOMIYA TAKUJI , IKEDA HIROSHI , KANEDA HIDEAKI , MAEDA TAKAYOSHI , KUWAJIMA HIDESUMI
IPC分类号： F01D25/10
CPC分类号： F01D25/10
摘要： PURPOSE:To warm up a steam turbine speedily with a simple structure, by opening a warm up valve of a partial stop valve out of plural warm-up valved main steam stpp valves, while opening another stop valve too, and warming up a main steam leed pipe and a steam chest of a main steam control valve. CONSTITUTION:Warm-up valves 2a-1 and 2a-2 are installed in each of plural main steam stop valves 2-1 and 2-2 and drain valves 7-1 and 72 are installed in addition. In time of warming up for a turbine, the warm-up valve 2a-2 of the one side main steam control valve 2-2 is opened, while the drain valve 7-1 of the other side main steam control valve 2-1 is also opened. With this constitution, the steam run past the warm-up valve 2a-2 is discharged out of the drain valve 7-1 by way of main steam lead pipes 3-3 and 3-4 and steam chests 4-1 and 4-2 of a main steam control valve, whereby these main steam lead pipes 3-1-3-4 and steam chests 4-1 and 4-2 are speedily warmed up.
摘要翻译：目的：通过简单的结构快速预热蒸汽轮机，通过从多个预热阀主蒸汽阀门中打开一个部分止回阀的预热阀，同时打开另一个截止阀，并加热主蒸汽主管和主蒸汽控制阀的蒸汽箱。构成：在多个主蒸汽截止阀2-1和2-2中的每一个中安装有预热阀2a-1和2a-2，另外安装排水阀7-1和72。在涡轮机预热时，单侧主蒸汽控制阀2-2的预热阀2a-2打开，而另一侧主蒸汽控制阀2-1的排水阀7-1为也开了。利用这种结构，经过预热阀2a-2的蒸汽通过主蒸汽引管3-3和3-4以及蒸汽箱4-1和4-2从排水阀7-1排出的主蒸汽控制阀，由此这些主蒸汽导管3-1-3-4和蒸汽箱4-1和4-2被快速升温。

26. 发明专利

JPS6165003A Controlling method for turbine in intermediate pressure starting 失效
标题翻译：中压压力起动中的涡轮机控制方法
公开(公告)号：JPS6165003A
公开(公告)日：1986-04-03
申请号：JP18364584
申请日：1984-09-04
申请人： Hitachi Eng Co Ltd , Hitachi Ltd
发明人： NAGAI SHINICHI , KUWAJIMA HIDESUMI , SAKAMOTO AKIHISA
IPC分类号： F01K7/24 , F01D19/00
CPC分类号： F01D19/00
摘要： PURPOSE:To prevent a temperature in a high pressure turbine exhaust hood from rising by instantly increasing a steam quantity flowing into a high pressure turbine more than a quantity for load corresponding to reheat steam pressure in starting the high-intermediate pressure turbine. CONSTITUTION:In the intermediate pressure starting method for a steam turbine comprising of a high pressure turbine 7 and an intermediate pressure turbine 8 driven by a reheat steam which is produced by reheating a steam after used for driving the high pressure turbine, a load is instantly increased from B% to A% (a load corresponding to pressure controlled by a low pressure bypass control valve 15) by quickly opening a steam adjust valve 3. Consequently, an exhaust pressure in the high pressure turbine 7 is increased at a dash above a reheat steam pressure to discharge the steam flowing into the high pressure turbine 7. Thus temperature rise due to windage loss in an exhaust hood can be prevented.
摘要翻译：目的：为了防止高压涡轮机排气罩中的温度瞬间增加流入高压涡轮机的蒸汽量超过与启动高中压涡轮机时的再热蒸汽压力相对应的负载量。构成：在用于蒸汽涡轮机的中压起动方法中，包括高压涡轮机7和由再热蒸汽驱动的中压涡轮机8，所述再热蒸汽是在用于驱动高压涡轮机之后再加热蒸汽而产生的，负荷立即通过快速打开蒸汽调节阀3，从B％增加到A％（对应于由低压旁通控制阀15控制的压力的负荷）。因此，高压汽轮机7中的排气压力高于重新加热蒸汽压力以排出流入高压汽轮机7的蒸汽。因此，可以防止由于排气罩中的风阻损失引起的温度升高。

27. 发明专利

JPS60259710A TURBINE CONTROLLING APPARATUS 失效
公开(公告)号：JPS60259710A
公开(公告)日：1985-12-21
申请号：JP11458684
申请日：1984-06-06
申请人： HITACHI LTD
发明人： TAKETOMO MASAKI , KUWAJIMA HIDESUMI
IPC分类号： F01D21/00 , F01D17/06 , F01D21/02
摘要： PURPOSE:To simplify the mechanism and system for controlling turbine speed for improving reliability by providing limit setting speed in an intercepting valve control unit to control turbine speed with the intercepting valve opened and closed by a solenoid valve. CONSTITUTION:Speed error 29 obtained from comparing a turbine speed signal 27 with set speed 28 and integrated acceleration error 34 obtained from comparing an acceleration signal 31 with set acceleration 32 are sent to the input of a circuit 35 for giving a priority to low value and a load setting signal 43 is added to the output signal 42 of said circuit. The added signal is converted to speed signal for a normal control system by the use of a regulator valve setting rate alphacv, while being sent to an electromagnetic valve 56 and an intercepting valve 52 through a hysteresis circuit 55. When the turbine speed is reduced to 101% of rating, the electromagnetic valve 56 is excited to increase speed and when it exceeds 102%, the electromagnetic valve 56 is deenergized to reduce speed so that the rated speed is set by the repetition of said procedures.

28. 发明专利

JPS60209606A Controlling method and device for reheating system in steam turbine 失效
标题翻译：蒸汽涡轮机再加热系统的控制方法及装置
公开(公告)号：JPS60209606A
公开(公告)日：1985-10-22
申请号：JP6323884
申请日：1984-04-02
申请人： Hitachi Eng Co Ltd , Hitachi Ltd
发明人： NISHINOMIYA TAKUJI , IKEDA HIROSHI , MAEDA TAKAYOSHI , KUWAJIMA HIDESUMI
IPC分类号： F01K7/24
CPC分类号： F01K7/24
摘要： PURPOSE:To prevent the drain piping from hammering by a method wherein a heating steam control valve is controlled to be delayed for full opening at the service-in time of a reheater for the control of a steam turbine reheating steam system in a nuclear power plant. CONSTITUTION:A control signal 16 from a turbine output control device 13 is received with an output control signal receiving part 27 of a heating steam control device 26. When the output of the turbine reaches the setting point, a signal 28 is sent to a selector 29, then the selector 29 is set to select an output-heating steam pressure converting part 31. The steam pressure converting part 31 outputs a lower objective value than a pressure setting pattern II1 according to a pressure setting pattern III1 as a heating steam requiring signal 34 only at the service-in time of a reheater 4, then the output is sent to a heating steam pressure comparing part 36. Meanwhile, a pressure at the rear side of a heating steam control valve 8 is detected with a pressure detector 15, a signal 17 is sent to a heating steam pressure signal receiving part 32, the receiving part 32 sends a signal 35 to the comparing part 36, the signal 33 is compared with the signal 35, then a signal 37 is outputted to control the opening degree of the valve 8.
摘要翻译：目的：为了防止排水管道的冲击，在加热蒸汽控制阀被控制为在再热器的使用时间内完全开启，以控制核电站中的汽轮机再热蒸汽系统。构成：来自涡轮机输出控制装置13的控制信号16与加热蒸汽控制装置26的输出控制信号接收部27接收。当涡轮机的输出到达设定点时，将信号28发送到选择器如图29所示，选择器29被设定为选择输出加热蒸汽压力转换部31.蒸汽压力转换部31根据作为加热蒸汽需求信号的压力设定模式III1输出比压力设定模式II1更低的目标值仅在再热器4的使用时间内，输出被送到加热蒸汽压力比较部36.同时，利用压力检测器15检测加热蒸汽控制阀8的后侧的压力，信号17被发送到加热蒸汽压力信号接收部32，接收部32向比较部36发送信号35，将信号33与信号35进行比较，然后将信号37输出到co 控制阀8的开度。

29. 发明专利

JPS6038521B2 失效
公开(公告)号：JPS6038521B2
公开(公告)日：1985-09-02
申请号：JP633681
申请日：1981-01-21
申请人： HITACHI LTD
发明人： ARAKI TSUTOMU , KUWAJIMA HIDESUMI
IPC分类号： F01K7/22 , F01D17/10 , F01D17/14

30. 发明专利

JPS5954706A Steam increase/decrease valve driver for steam turbine 失效
标题翻译：蒸汽涡轮增压/减压阀驱动
公开(公告)号：JPS5954706A
公开(公告)日：1984-03-29
申请号：JP16504282
申请日：1982-09-24
申请人： Hitachi Ltd
发明人： KUWAJIMA HIDESUMI
IPC分类号： F01D17/20 , F01D21/00
CPC分类号： F01D21/00
摘要： PURPOSE:In a device for controlling a steam increase/decrease valve through operation of a hydraulic cylinder, to enable abrupt stoppage of said valve by providing a bypath line which detours the controller for a hydraulic cylinder and extracts the pressurized oil quickly upon breaking of load. CONSTITUTION:A servo valve 19 is controlled to feed pressurized oil from an oil pressure source OS through a line II into a hydraulic cylinder 21 to roll a lever 22 thus to function regulating valves 25, 28 for upper and lower steam through levers 23, 26 and cams 24, 27. In such device, a bypath line I including a line I b for draining the pressurized feed line I a to said cylinder 21 and the lower section of said cylinder 21 is provided. Said bypath line I will detour the servo valve 19 while an exchange valve 23 and check valve 35 are placed in the line I . The exchange valve 33 will function upon breaking of load to close the steam regulating valves 25, 28 quickly.
摘要翻译：目的：在用于通过操作液压缸来控制蒸汽增减阀的装置中，通过提供绕路径线来使所述阀突然停止，所述路径线绕过用于液压缸的控制器，并在负载断裂时快速提取加压油。构成：伺服阀19被控制以将加压油从油压源OS通过管线II输送到液压缸21中以滚动杠杆22，从而使上部和下部蒸汽通过杠杆23,26的调节阀25,28起作用和凸轮24,27。在这种装置中，设置了包括用于将加压供给管线Ia排出到所述缸体21和所述缸体21的下部的管线Ib的贯穿路线I。所谓的路径线I将绕过伺服阀19，同时将换向阀23和止回阀35放置在管线I中。交换阀33将在负载断裂时起作用，以快速关闭蒸汽调节阀25,28。

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