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1. 发明授权

US4228359A Rotor-stress preestimating turbine control system 失效
标题翻译：转子应力预估涡轮机控制系统
公开(公告)号：US4228359A
公开(公告)日：1980-10-14
申请号：US929130
申请日：1978-07-28
申请人： Hiroshi Matsumoto , Yoshio Sato , Shigeyoshi Kawano , Yoshiyuki Nakano , Fumio Kato , Katsukuni Hisano , Katsuto Kashiwahara , Yasuhiko Otawara , Toshihiko Higashi , Yasuhiro Tennichi , Jube Matsumura , Koichiro Fukushima
发明人： Hiroshi Matsumoto , Yoshio Sato , Shigeyoshi Kawano , Yoshiyuki Nakano , Fumio Kato , Katsukuni Hisano , Katsuto Kashiwahara , Yasuhiko Otawara , Toshihiko Higashi , Yasuhiro Tennichi , Jube Matsumura , Koichiro Fukushima
IPC分类号： F01D19/02 , F01K7/16
CPC分类号： F01K7/165 , F01D19/02
摘要： The present stress in the turbine rotor is estimated at each control period, from the steam temperature and pressure at the turbine inlet. In addition, the future turbine inlet steam temperature or pressure is preestimated once every n.sub.T control cycles, for a given speed or load changing rate, making use of data concerning the changing rate of the turbine steam inlet temperature or pressure in relation with the change of the speed or load, which has been obtained by a learning of the past turbine operating condition. This future steam temperature or pressure at the turbine inlet is used as a factor for preestimating the future stress expected to be caused in the turbine rotor. The preestimation of the rotor stress is performed for a plurality of assumed speed or load changing rates. The turbine is controlled at the maximum speed increase-rate or load changing rate which would not cause the future stress preestimated over a given preestimation time to exceed a limit stress. An observation of the present stress is made at each control period to check whether the limit stress is not exceeded by the present stress.
摘要翻译：根据涡轮机入口处的蒸汽温度和压力，在每个控制周期估计涡轮转子中的当前应力。另外，对于给定的速度或负荷变化率，在每个nT控制循环中预先设想未来的涡轮进口蒸汽温度或压力一次，利用关于涡轮机进气温度或压力变化率的数据与通过学习过去的涡轮机操作条件而获得的速度或负载。涡轮机入口处的未来蒸汽温度或压力被用作预先估计在涡轮转子中引起的未来应力的因素。对于多个假想速度或负载变化率来执行转子应力的预测。涡轮机以最大速度增加速率或负载变化率进行控制，这不会导致在给定预测时间内预测的未来应力超过极限应力。在每个控制周期进行当前应力的观察，以检查当前应力是否超过极限应力。

2. 发明授权

US4203297A Governing system for use in sliding-pressure type turbine power plant 失效
标题翻译：用于滑压式涡轮发电厂的管理系统
公开(公告)号：US4203297A
公开(公告)日：1980-05-20
申请号：US910346
申请日：1978-05-30
申请人： Akira Sakai , Jube Matsumura
发明人： Akira Sakai , Jube Matsumura
IPC分类号： F01D17/04 , F01K13/02
CPC分类号： F01D17/04
摘要： A governing system for use in a sliding-pressure type turbine power plant, in which a target level for a main steam pressure is automatically set in response to a load demand, while two or more regulating valves are controlled according to a valve-positioning signal so as to eliminate a deviation of an actual load from a load demand, whereupon a target level for the main steam pressure is corrected, based on the diviation of the actual opening from the target opening of each regulating valve, whereby the main pressure generated in a boiler is regulated to a corrected target level. This governing system includes a valve driving mechanism functioning such that all regulating valves be opened at a time in a range up to a given opening, and thereafter the regulating valves be opened one after another, commensurate to the magnitude of a control signal, after entering a range beyond the aforenoted given opening.
摘要翻译：一种用于滑动式涡轮发电厂的调节系统，其中响应于负载需求自动设定主蒸汽压力的目标水平，同时根据阀定位信号控制两个或更多个调节阀从而消除实际负载与负载需求的偏差，由此基于从每个调节阀的目标开度的实际开度的分离来校正主蒸汽压力的目标水平，由此产生的主压力锅炉被调整到更正的目标水平。该控制系统包括阀驱动机构，其功能是使得所有调节阀在一直到给定开口的范围内的时间打开，然后调节阀在进入之后依次打开，与控制信号的大小相对应超出了上述开放的范围。

3. 发明授权

US4003205A Method and apparatus for operating a steam turbine plant having feed water heaters 失效
标题翻译：用于操作具有给水加热器的蒸汽轮机设备的方法和装置
公开(公告)号：US4003205A
公开(公告)日：1977-01-18
申请号：US602723
申请日：1975-08-07
申请人： Jube Matsumura
发明人： Jube Matsumura
IPC分类号： F01K7/38 , F01K7/40
CPC分类号： F01K7/40
摘要： In a steam turbine plant with feed water heaters receiving steam extracted from the turbine to apply in heat exchange with the feed water being supplied to the boiler, the drain water level in the water heaters is monitored so that when the drain level exceeds a predetermined abnormal level, for example due to rupture of the feed water pipes in the feed water heater, steam supplied to the turbine is automatically reduced to runback the load on the turbine, and thereafter the extraction of the steam to the malfunctioning feed water heater from the turbine is stopped and the feed water heater is bypassed with respect to the feed water flowing to the boiler, so that the malfunctioning feed water heater is thus isolated from the turbine plant.
摘要翻译：在具有从涡轮机抽取的蒸汽的给水加热器的蒸汽轮机设备中，与供给到锅炉的给水进行热交换以进行热交换，监视热水器中的排水水位，使得当排水水平超过预定的异常水平，例如由于给水加热器中的给水管的破裂，供给到涡轮机的蒸汽被自动减少以使涡轮机上的负载回流，然后将蒸汽从涡轮机提取到故障给水加热器相对于流入锅炉的给水，旁路给水加热器，从而使故障的给水加热器与涡轮机组隔离。

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