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1. 发明专利

JPH0434051B2 失效
公开(公告)号：JPH0434051B2
公开(公告)日：1992-06-04
申请号：JP1655485
申请日：1985-02-01
申请人： HITACHI LTD
发明人： MYAGAKI HISANORI , AZUMA TOSHIHIKO , YOKOGAWA ATSUSHI , SHIMADA YOSHIHIRO , KURIHARA NOBUO , NISHIKAWA MITSUYO , SATO YOSHIO , WATABE ATSUMI
IPC分类号： F23N5/00 , F23C99/00 , F23N1/02 , F23N5/08 , F23N5/18

2. 发明专利

JPS61211603A AUTOMATIC CONTROLLER FOR THERMAL POWER PLANT 失效
公开(公告)号：JPS61211603A
公开(公告)日：1986-09-19
申请号：JP5048885
申请日：1985-03-15
申请人： HITACHI LTD
发明人： YOKOGAWA ATSUSHI , AZUMA TOSHIHIKO
IPC分类号： F23N5/00 , F22B35/00

3. 发明专利

JPS61180829A BURNING CONTROL METHOD 失效
公开(公告)号：JPS61180829A
公开(公告)日：1986-08-13
申请号：JP1655485
申请日：1985-02-01
申请人： HITACHI LTD
发明人： MIYAGAKI HISANORI , AZUMA TOSHIHIKO , YOKOGAWA ATSUSHI , SHIMADA YOSHIHIRO , KURIHARA NOBUO , NISHIKAWA MITSUYO , SATO YOSHIO , WATABE ATSUMI
IPC分类号： F23N5/00 , F23C99/00 , F23N1/02 , F23N5/08 , F23N5/18
摘要： PURPOSE:To maximize a thermal efficiency of a plant by a method wherein at the time when a value of NOx measured at an outlet of a furnace has fulfilled the restrictive terms and further, a thermal efficiency of a boiler has been judged as the largest one by a boiler thermal efficiency judgment division, at which a trial operating variance is treated definitely as the most optimized variance. CONSTITUTION:A load requirement signal 1000 for a power plant is converted into an input demand signal 3000 to a boiler 1, in which a main steam pressure 1100 has been compensated so as to become a given level, which is introduced in a feed water control system 400 as a setting value of a feed water flow volume 1200 and is employed for controlling a feed water regulating valve 20. The signal 3000 introduced in a main steam compensation block 200, is compensated so that a main steam temperature 1101 may become a predetermined value, and also it determines a combustion volume demand 3100. The signal 3100 is led into a fuel flow volume system 500 as a setting value of a total coal flow volume 1201, and is used for controlling a driving motor 3 of a feeder 4, which is introduced in an air fuel ratio compensation block 300, then it is converted into a total air volume demand signal 3200, so that O2 excess ratio 1102 in exhaust gas may become a predetermined value in an air fuel ratio compensation block 300. In an air flow volume control system 600, a damper 7 is controlled so that a total air flow volume 1102 may equalize with the total flow volume demand signal 3200.

4. 发明专利

JPS61173014A BURNER FOR PULVERIZED COAL COMBUSTION 失效
公开(公告)号：JPS61173014A
公开(公告)日：1986-08-04
申请号：JP1240185
申请日：1985-01-28
申请人： HITACHI LTD
发明人： AZUMA TOSHIHIKO
IPC分类号： F23D1/00 , F23C99/00
摘要： PURPOSE:To provide apulverized coal burner which enables to keep volatile content from coal in high temperature and low oxygen combustion, by providing a means to promote ignition of pulverized coal by formign an atmospheric area in high temperature and of low oxygen in front of an injection port of mixed gas of solid fuel of pulveruzed coal and air. CONSTITUTION:Pulverized coal 1, conveying air 9 and main combustion air 20 are separately fed into a boiler furnace 26. The main combustion air 20 is divided into 20A and 20B. A swirl flow movement is given to air 20B so that a combustion process of volatile content is prevented from mixing with a main combustion process. A radiant body 25 of netting work is provided in front of a port from which the coal 1 and the air 9 are injected, so as not to be a great obstacle to the flows of injected materials, and laser is irradiated to the radiant body from a laser source 26. The radiant body 25 is coated with SUS agent of high heat conductivity and of high intensity, and with a ceramic coating compound having high resistance to wearing, because the coal 1 and the air 9 will collide against it.

5. 发明专利

JPS6193311A Monitoring method of combustion state and device thereof 失效
标题翻译：燃烧状态监测方法及其装置
公开(公告)号：JPS6193311A
公开(公告)日：1986-05-12
申请号：JP21569184
申请日：1984-10-15
申请人： Hitachi Ltd
发明人： NISHIKAWA MITSUYO , KURIHARA NOBUO , MOROOKA YASUO , AZUMA TOSHIHIKO , MIYAGAKI HISANORI , YOKOGAWA ATSUSHI
IPC分类号： F23M11/04 , F23N1/02 , F23N5/08 , F23N5/18
CPC分类号： F23N1/022 , F23N5/082 , F23N5/18 , F23N2023/40 , F23N2025/08 , F23N2025/10 , F23N2025/16 , F23N2027/20 , F23N2037/16 , F23N2039/02
摘要： PURPOSE:To estimate and monitor an ingredient of waste gas at an outlet of a furnace, by making use of combustion state in the vicinity of a burner and a quantity of air to be loaded to a rear flow part of the combustion or expressions showing them. CONSTITUTION:An image fiber is inserted into a furnace through an inspection hole of a furnace wall, a picture of a combustion flame is led outside of the furnace, which is converted into an electric signal by an ITV camera. An ana logue image signal 5 from the ITV camera is converted into a digital image signal 6 through an A-D converter 1 and stored into a memory 2. A picture data 7 stored is taken into a processor 3 and estimation index Iusc of unburnt content in ashes is computed. A manipulated variable and a measured amount 10 are applied to the processor 3 as a digital signal 11 through a process 9. On the one hand, as after air has been loaded through the rear flow part of the flame and a reducing quantity of unburnt content in the ashes based on the after air is measured at a measuring position, the unburnt content UBC in the ashes is estimated in consideration of this effect.
摘要翻译：目的：通过利用燃烧器附近的燃烧状态和一定量的空气来估计和监测炉子出口处的废气成分，并将其加载到燃烧的后部分或表示它们的情况。构成：将图像纤维通过炉壁的检查孔插入炉中，将燃烧火焰的图片引导到炉外，由ITV摄像机转换成电信号。来自ITV摄像机的声音图像信号5通过AD转换器1被转换为数字图像信号6并被存储到存储器2中。存储的图像数据7被送入处理器3，灰分中的未燃烧内容的估计指数Iusc 被计算。操作变量和测量量10通过过程9作为数字信号11施加到处理器3.一方面，当通过火焰的后流部分加载空气并且减少未燃烧内容量在测量位置测量基于后空气的灰分中，考虑到该效果来估计灰分中的未燃烧内容物UBC。

6. 发明专利

JPS6165002A Speed governing controller for tandem steam turbine 失效
标题翻译：用于TANDEM蒸汽涡轮的速度控制器
公开(公告)号：JPS6165002A
公开(公告)日：1986-04-03
申请号：JP18637884
申请日：1984-09-07
申请人： Hitachi Ltd
发明人： AZUMA TOSHIHIKO
IPC分类号： F01D17/20 , F01D13/00 , F01D21/14
CPC分类号： F01D13/00
摘要： PURPOSE:To improve the reliability of a control system by providing a tandem steam turbine with plural speed detectors and using signals from the speed detector for recording and indicating speed when an exclusive detector for controlling speed and load gets out of order. CONSTITUTION:A control system for a tandem steam turbine is provided with plural speed detector DP1-3 and ones for recording and indicating speed DP4, 5. Signals sent from the above detectors are inputted into a majority logic circuit ML, and the most reliable of signals sent from exclusive speed detectors for controlling speed and load is selected to be used. When one or more of the above signals are judged to be abnormal, the signals sent from the speed detectors for recording and indicating speed DP4, 5 are added to the above signals, and then the most reliable of these signals is selected. Consequently, the reliability of the control system can be improved.
摘要翻译：目的：通过提供具有多个速度检测器的串联蒸汽轮机，并且当用于控制速度和负载的专用检测器无序时，使用来自速度检测器的信号来记录和指示速度来提高控制系统的可靠性。构成：用于串联式蒸汽轮机的控制系统具有多个速度检测器DP1-3和用于记录和指示速度DP4,5的速度检测器DP1，5.从上述检测器发送的信号被输入到多数逻辑电路ML中，并且最可靠的选择使用专用速度检测器发送的用于控制速度和负载的信号。当上述信号中的一个或多个被判断为异常时，将从记录速度检测器发送的信号和指示速度DP4,5的信号加到上述信号中，然后选择这些信号中最可靠的信号。因此，可以提高控制系统的可靠性。

7. 发明专利

JPS60138323A CONTROL SYSTEM OF COMBUSTION 失效
公开(公告)号：JPS60138323A
公开(公告)日：1985-07-23
申请号：JP24402183
申请日：1983-12-26
申请人： HITACHI LTD
发明人： MATSUMOTO HIROSHI , SATOU YOSHIO , SAITOU TADAYOSHI , AZUMA TOSHIHIKO
IPC分类号： F23N5/00 , F23N5/08
摘要： PURPOSE:To form a system through which concentration of harmful material in exhaust gas can be controlled automatically lower than a control value, by deciding the most suitable manipulated variable to a plurality of operating ends by making use of nonlinear programming method viewing from a relation between the manipulated variable and the concentration of measured exhaust gas content of a boiler. CONSTITUTION:To measure usually concentration of NO in combustion gas, a CARS instrument consisting of a laser oscillator 60 and a spectrophotometric analyzer 65 is mounted on the upper part of a furnace. When spectral analysis of this CARS is performed by the spectrophotometric analyzer 65, the concentration of NO can be obtained as an analyzed value 70 of concentration of gas. An optimizing method in an optimizing device 100 of a manipulated variable is that an aim air-fuel ratio 75, an aim pour 80 of air and an aim mixing quantity 85 of gas are put out by making use of nonlinear programming method. If the above treatment is performed periodically, the concentration of NO can be controlled lower than a restricting value always. With this construction, optimum properties of operation can be ensured and employment of the titled system at low public nuisances whose response is extremely favorable and reliability is high is made possible.

8. 发明专利

JPS6089601A METHOD OF CONTROLLING AIR PREHEATER FOR PULVERIZED COAL BOILER 失效
公开(公告)号：JPS6089601A
公开(公告)日：1985-05-20
申请号：JP19614283
申请日：1983-10-21
申请人： HITACHI LTD
发明人： AZUMA TOSHIHIKO , MURAMATSU MASARU , MATSUMOTO HIROSHI
IPC分类号： F22B31/08

9. 发明专利

JPS5932642B2 JPS5932642B2 - 失效
公开(公告)号：JPS5932642B2
公开(公告)日：1984-08-10
申请号：JP9419977
申请日：1977-08-08
申请人： Hitachi Ltd
发明人： MATSUMOTO HIROSHI , SATO YOSHIO , KAWANO SHIGEYOSHI , NAKANO YOSHUKI , KATO FUMIO , KUNO KATSUKUNI , KASHIWARA KATSUTO , AZUMA TOSHIHIKO , AMAHI YASUHIRO , MATSUMURA JUBEE , FUKUSHIMA KOICHIRO , OOTAHARA YASUHIKO
IPC分类号： F01D17/24 , F01D19/00

10. 发明专利

JPS5482501A ROTOR STRESS FORECASTING TURBINE CONTROL SYSTEM 失效
公开(公告)号：JPS5482501A
公开(公告)日：1979-06-30
申请号：JP14925177
申请日：1977-12-14
申请人： HITACHI LTD
发明人： MATSUMOTO HIROSHI , SATOU YOSHIO , KAWANO SHIGEYOSHI , NAKANO YOSHIYUKI , KATOU FUMIO , KUNO KATSUKUNI , KASHIWARA KATSUTO , AZUMA TOSHIHIKO , AMAHI YASUHIRO , MATSUMURA JIYUUBEI , FUKUSHIMA KOUICHIROU , OOTAHARA YASUHIKO
IPC分类号： F01D17/24 , F01D19/00
摘要： PURPOSE:To prevent an excessively large stress from appearing in a rotor of a turbine upon application of parallel loads thereto by constituting the control system therefore such that an assumption is had after reaching the rated speed that an initial load is applied to the turbine, and then a forecast is made of a stress which is to appear in the rotor due to the load whereafter the forecasted stress is compared with a predetermined allowable stress in order to provide parallel load allowing conditions. CONSTITUTION:A basic function of a control system 100 calculates, before entering a parallel load running, a stress which is forecasted to appear after entering the parallel load running, and compares the forecasted stress with an allowable predetermined stress to provide a parallel load allowance instruction 15 to a synchronous parallel load function 14. Whether a judging operation is required or not for judgement of parallel load allowance is judged by a judgement 130 therefor. A flow of processes is changed over to a parallel load allowance judgement 131 if a breaker 16 is in OFF position, and to an optimum load changing rate determination 144 if the breaker 16 is in ON position. As a result of the parallel load allowance judgement 131, a parallel load allowing instruction is applied to the synchronous parallel load function 14 if the allowable load changing rate is not judged as hold, whereas a parallel load inhibiting instruction is applied if the allowable load changing rate is judged as hold.

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