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1. 发明专利

JPH037801A BOILER FEED WATER CONTROL DEVICE OF FEED WATER PUMP DRIVEN BY TURBINE 失效
公开(公告)号：JPH037801A
公开(公告)日：1991-01-16
申请号：JP14276589
申请日：1989-06-05
申请人： MITSUBISHI HEAVY IND LTD
发明人： TEJIMA TOSHIAKI , AWADA KAZUYUKI
IPC分类号： F22D5/32
摘要： PURPOSE:To prevent the unnecessary stopping of a boiler plant by providing a control circuit which prevents transient water supply interruption in the feed water of a boiler where bias signal is added to water feed signal at the time such as load shut-down of the plant. CONSTITUTION:Under the normal state of operation the control signal alpha1 which is calculated by a feed water flow rate control device 5 is transmitted to electric/ hydraulic converter 7 and the flow rate of the feed water is controlled by changing the lift of a LP governor valve 3. Namely, in this case, alpha1=alpha2 and a change-over relay T1 is closed but a change-over relay T2 is closed during normal operation so that alpha3=0. If in this state load shut-down occurs, the relay T1 is open, and the relay T2 is closed. Namely signals before the load shut-down are stored in memory by an analog signal storage device 8, and they are compared with a set value Y% by a subtractor 9, and output alpha4 (=Y-alpha1) of the subtractor 9 passes through the relay T2 which is closed as soon as the load is shut down and is transmitted to an adder 6, and the input alpha2 of the electric/hydraulic converter 7 becomes alpha2=alpha1+Y-alpha1=Y, and it is forcibly brought to a signal by which a HP governor 4 begins to open at the same time as the load shut-down.

2. 发明专利

JPS58155401A PLANT CONTROL DEVICE 失效
公开(公告)号：JPS58155401A
公开(公告)日：1983-09-16
申请号：JP3902582
申请日：1982-03-12
申请人： MITSUBISHI HEAVY IND LTD
发明人： HAYASHI KOUICHIROU , TEJIMA TOSHIAKI , NAKAMURA NAOTOMI , KURIHARA MIKI
IPC分类号： G05B9/03
摘要： PURPOSE:To use a read value of a plant input value by rounding it, to use a PI controller with tracking (TPI) in case when there are variations in the read value, and to set to a tracking mode when a set value approaches a measured value. CONSTITUTION:A water level signal A of a drum is inputted as a process signal to each computer CPTR, a value of A is rounded at one position, and is read to operators 1-1, 2-1 and 3-1 by values of A1, A2 and A3, respectively. The structure of each CPTR is the same, therefore, when tracking as to the first CPTR, a drum level set value C set by the signal generator 1-2 is inputted to the substracter 1-1, a deviation value C-A1 against A1 is derived, and its deviation value is inputted to a TPI1-3 and a high and low monitor HIM1-4. By the HIM1-4, an allowable error of the deviation value is inspected, in accordance with which Z=0 or Z=1 is outputted to the TPI1-3. In the TPI1-3, operation of proportional integration is executed in accordance with the deviation value, and this value Y1 is outputted, but in case of Z=1, a value X of the valve opening is inputted to the TPI1-3.

3. 发明专利

JPS56132485A INTERLOCKING CONTROL PROCESS IN WATER DISCHARGE VALVE 失效
公开(公告)号：JPS56132485A
公开(公告)日：1981-10-16
申请号：JP3590580
申请日：1980-03-21
申请人： MITSUBISHI HEAVY IND LTD
发明人： TEJIMA TOSHIAKI , AWADA KAZUYUKI
IPC分类号： F04D15/00 , F04B49/02 , F04B49/06
摘要： PURPOSE:To attain stable and favorable flow control without abnormal plant control by opening a water discharge valve at the time when a turbine for driving a water pump has been changed over to the flow control. CONSTITUTION:Starting of a turbine 2 for driving water pump boosts speeds by gradually rising oil pressure in a low speed range governor LG, and when it arrives at the number of revolution to be controlled by a high speed range governor HG, at the time when difference in oil pressure of the both governors HG, LG comes into a specified value by decreasing the oil pressure of the high speed range governor HG, the oil pressure of the low speed range governor LG is run up, and control of the turbine 2 for driving the water pump is transferred to the high speed range governor HG (flow control part). On the other hand, in the meantime, discharge pressure becomes higher than water header pressure, at the same time, a water discharge valve 6 opens. This facilitates to attain stable and favorable flow control without abnormal plant control.

4. 发明专利

JPS55150402A MAIN STREAM PRESSURE CONTROL WHILE PRESSURE OF DRUMMSHAPED BOILER RISES 失效
公开(公告)号：JPS55150402A
公开(公告)日：1980-11-22
申请号：JP5629079
申请日：1979-05-10
申请人： MITSUBISHI HEAVY IND LTD
发明人： TEJIMA TOSHIAKI , SANO FUMIYASU
IPC分类号： F22B35/14

5. 发明专利

JPH0345198A LOAD LIMITING CIRCUIT FOR GENERATOR 失效
公开(公告)号：JPH0345198A
公开(公告)日：1991-02-26
申请号：JP17574189
申请日：1989-07-10
申请人： MITSUBISHI HEAVY IND LTD
发明人： YOSHIDA TOSHIRO , TEJIMA TOSHIAKI
IPC分类号： F01D17/20 , H02P9/00
摘要： PURPOSE:To permit the keeping of the allowable value of a system transformer by controlling the output of a generator so as to become lower than the maximum capacity of the system transformer at all times. CONSTITUTION:An allowable maximum value operator 1 operates a-b

6. 发明专利

JPS60140001A SUPERCRITICAL PRESSURE BOILER 失效
公开(公告)号：JPS60140001A
公开(公告)日：1985-07-24
申请号：JP24545483
申请日：1983-12-28
申请人： MITSUBISHI HEAVY IND LTD
发明人： TEJIMA TOSHIAKI , NAKAMURA NAOTOMI , KURIHARA MIKI
IPC分类号： F22B35/00 , F22B35/12

7. 发明专利

JPH01314807A FUEL DISTRIBUTION CONTROLLER FOR MULTI-KIND FUEL COMBUSTION BOILER 失效
公开(公告)号：JPH01314807A
公开(公告)日：1989-12-20
申请号：JP14739388
申请日：1988-06-15
申请人： MITSUBISHI HEAVY IND LTD
发明人： BANDAI YASUO , TEJIMA TOSHIAKI , HAYASHI MITSUYOSHI
IPC分类号： F23N1/00 , F23N5/18
摘要： PURPOSE:To consume multi-sort fuels all in a plurality of boilers without increasing operator's load and to so operate that its total efficiency becomes maximum by selecting a fuel distribution to maximize a calculated boiler stream total amount from the fuel flow rate signal of each fuel mother tube when fuel supply amount and fuel distribution to the boilers are varied, and incorporating a program for outputting the fuel distribution signal to a flow rate control valve. CONSTITUTION:The supply amounts of fuels A - C from mother tubes are measured by detectors 1 - 3, and the flow rate signals are input to a fuel distribution controller 4. The controller 4 contains a digital computer, and a program for so distributing fuel supply amounts to boilers as to maximize the total steam generation amount of the boilers Nos. 1 - 3 to input signals indicating the supply amounts of the fuels A - C is associated in advance. The supply amounts of the fuels measured by the detectors 1 - 3 are input to the program, and the flow rates of the fuels A - C to be fed to the boilers are calculated. The fuels A - C of the boilers Nos. 1 - 3 are so controlled by flow rate control valves 5 - 13 that the real flow amounts become equal to calculated values by the controller 4.

8. 发明专利

JPS63213701A FLUIDIZED-BED BOILER CONTROLLER 失效
公开(公告)号：JPS63213701A
公开(公告)日：1988-09-06
申请号：JP4809387
申请日：1987-03-03
申请人： MITSUBISHI HEAVY IND LTD
发明人： TEJIMA TOSHIAKI , TSUCHIKO KAZUYOSHI
IPC分类号： F22B35/00 , F22B1/02

9. 发明专利

JPS6237615A IGNITION AND FIRE-EXTINCTION GUIDE DEVICE FOR BURNER 失效
公开(公告)号：JPS6237615A
公开(公告)日：1987-02-18
申请号：JP17688785
申请日：1985-08-13
申请人： MITSUBISHI HEAVY IND LTD , FUKUYAMA KYODO KARIYOKU KK
发明人： TEJIMA TOSHIAKI , NAKAMURA NAOTOMI , TSUCHIKO KAZUYOSHI , SUGIMITSU SANTA , KONO HISASHI
IPC分类号： F23N5/00 , F23N1/00
摘要： PURPOSE:To be able to guide effective ignition and fire-extinction for burners by determining fuel flow quantity and the number of used burners corresponding to a target load on the basis of memory for the relation between fuel pressure and flow quantity in accordance with the number of used burners. CONSTITUTION:A guide detector 1 memorizes a burner characteristic curve and is able to recognize the present status from conditions of ignition and fire-extinction, flow quantity,and pressure fed to the detector. When a target value of flow quantity and a rate of change are fed, a memorized burner characteristic curve is referred and the the number of used burners is determined and the order of the burners to be ignited and extinguished is determined by a built-in order setting function for ignition and fire-extinction and the scheduled time is indicated by a guide indicator 2.

10. 发明专利

JPS5748113A Mixing control method of fluid 失效
标题翻译：流体混合控制方法
公开(公告)号：JPS5748113A
公开(公告)日：1982-03-19
申请号：JP12271880
申请日：1980-09-04
申请人： Mitsubishi Heavy Ind Ltd
发明人： TEJIMA TOSHIAKI , FUJISAKI NOBUAKI
IPC分类号： G05D11/02 , G05D11/13
CPC分类号： G05D11/13
摘要： PURPOSE:To control a blending factor extending over a wide range, by directly comparing the output pressure of the respective discharge pumps. CONSTITUTION:Discharge pressure F of a pump 1 and discharge pressure E of a pump 2 are compared by a subtracter H, a pressure control valve 7 is operated by a controller I so that its difference is gone, and the discharge pressure F of the pump 1 is made same as the discharge pressure E of the pump 2. Also, a bias G is used when a difference is given to input pressure of each pressure control valve of the pumps 1, 2, and in case when the valve lift is extremely biased, bias pressure is put to one valve so that it does not deviate from the working limit of a control valve.
摘要翻译：目的：通过直接比较各个排放泵的输出压力来控制大范围内的混合系数。构成：将泵1的排出压力F和泵2的排出压力E用减法器H进行比较，由控制器I操作压力控制阀7，使其不同，泵的排出压力F 1与泵2的排出压力E相同。此外，当对泵1,2的各个压力控制阀的输入压力进行差分时，使用偏压G，并且在气门升程极度的情况下偏压，偏压被放入一个阀门，使其不偏离控制阀的工作极限。

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