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1. 发明专利

JPH0573131A EXPERT SYSTEM 失效
公开(公告)号：JPH0573131A
公开(公告)日：1993-03-26
申请号：JP23615691
申请日：1991-09-17
申请人： MITSUBISHI HEAVY IND LTD
发明人： INOSAWA YOSHINORI , MISAWA KAZUYUKI , HIGUCHI TOSHINAO , KATSUKI KENJI
IPC分类号： G05B13/02 , G05B23/02 , G06F9/44
摘要： PURPOSE:To provide a correspondent operation guide not to exert any adverse influence at the expert system to support an objective system. CONSTITUTION:This system is equipped with a main body 3 of the expert system provided with a correspondent operation candidate inference part 10 to receive signals from a knowledge data base 11 based on the knowledge of a skilled operator and a propriety evaluation part 9 to receive signals from the knowledge data base 11, object system 2 provided with a controlled system 5 and an automatic controller 4, data base 6 to input the state of the controlled system 5, automatic identifying function device 7 to identify the characteristic of the controlled system 5, and high-speed simulator 8 to calculate a predictive value while receiving the current system state. The correspondent operation candidate inference part 10 outputs plural correspondent operation candidates while receiving the current system state from the controlled system 5, and the propriety evaluation part 9 outputs the correspondent operation guide to an operator 1 while receiving the four kinds of inputs such as the predictive value and the knowledge from the knowledge data base 11.

2. 发明专利

JPH06337103A CONTROLLER FOR WATER SUPPLY FLOW RATE IN WATER SUPPLY PUMP 失效
公开(公告)号：JPH06337103A
公开(公告)日：1994-12-06
申请号：JP12701693
申请日：1993-05-28
申请人： MITSUBISHI HEAVY IND LTD
发明人： MISAWA KAZUYUKI
IPC分类号： F22D5/32
摘要： PURPOSE:To control the hunting of a water supply flow rate at a point near the start point of water supply upon transition of the parallel operation or the like of a turbine driving water supply pump with other water supply pump. CONSTITUTION:First and second switching devices with rate 21 and 22 are respectively connected to the output side of a turbine driving water supply pump circuit 40 and provided with first and second SG 37, 38. A program circuit 45 inputs automatic signals, service-in signals and service-out signals from a controller of a boiler side, inputs water supply flow rate signals from the turbine driving water supply pump circuit 40 and outputs first, second and third driving signals 41, 42 and 43. Thus, within a range where the water supply flow rate at a point near the start point of water supply increases or decreases, the rotating speed of the water supply pump is increased or decreased in accordance with a prescribed program. Therefore, water can be smoothly passed at a point near the start point of water supply without hunting the water supply flow rate unlike a conventional device.

3. 发明专利

JPH06137503A BOILER APPARATUS 失效
公开(公告)号：JPH06137503A
公开(公告)日：1994-05-17
申请号：JP28287892
申请日：1992-10-21
申请人： MITSUBISHI HEAVY IND LTD
发明人： MISAWA KAZUYUKI
IPC分类号： F22B35/00 , F23N3/08
摘要： PURPOSE:To provide a boiler apparatus having a forced draft fan and an induction ventilator and so controllable that a draft does not exceed a predetermined value width at the time of an abrupt load change. CONSTITUTION:When a boiler is stopped in emergency or solely operated in station, a flip-flop 31 is operated, and an inducted draft fan exit damper is throttled to a specified opening. When it is detected by a level monitor 27, a proportional integrator 22 and an incomplete differentiator 24 are operated. Thus, an abrupt rise of a denitrification exit draft is collected by the differentiator 24, and the damper is rapidly opened to prevent an overrise of the draft. When an output of the differentiator 24 becomes again zero after a time or more of on-delay 35 is elapsed, an output of the incomplete differentiation is fixed to zero, and it is returned to a control of a normal state. When a ventilation system run-back occurs, a flip-flop 38 is operated, the differentiator 24 is operated, and the damper is switched to abrupt change of the draft immediately after the run-back occurs, thereby suppressing a variation width of the draft to a predetermined value or less.

4. 发明专利

JPH10159747A FLOW CONTROLLING METHOD FOR PUMP 失效
公开(公告)号：JPH10159747A
公开(公告)日：1998-06-16
申请号：JP32396496
申请日：1996-12-04
申请人： MITSUBISHI HEAVY IND LTD
发明人： MISAWA KAZUYUKI
IPC分类号： F04B49/06 , F04D15/00 , F22D5/18 , G05D7/06
摘要： PROBLEM TO BE SOLVED: To establish a control method which can simplify the controlling system, accomplish a high reliability of the control, and permits reduction of the designing and manufacturing costs. SOLUTION: At the outlet, a pump 1 is equipped with an outlet valve 3 and a pressure compensated flow control valve 2, which are connected parallel with each other, and the revolving speed of the pump 1 is subjected at all times to a proportional integral control 14 based upon the deviation of the actual rate of flow 5 from the set value 6. When the set value 6 is in the low flow range, the outlet valve 3 is opened fully, and the opening of the pressure compensated flow control valve 2 is controlled by a function generator 17-when the set value 6 lies in the high rate range, both the outlet valve 3 and adjusting valve 2 are full opened.

5. 发明专利

JPH0836403A POLYGONAL LINE FUNCTION GENERATING DEVICE PROVIDED WITH AUTOMATIC CORRECTION FUNCTION 失效
公开(公告)号：JPH0836403A
公开(公告)日：1996-02-06
申请号：JP17286194
申请日：1994-07-25
申请人： MITSUBISHI HEAVY IND LTD
发明人： MISAWA KAZUYUKI
IPC分类号： G05B13/02 , G06F1/02
摘要： PURPOSE:To provide a polygonal line function generating device which automatically corrects the polygonal line function without a davice having a special function and is provided with the automatic correction function superior in economy and maintainability. CONSTITUTION:Plural polygonal line function generating devices 2a, 2b,... for correction which generate the polygonal line functions for correction to respective bend points of the polygonal function are provided for a one-input and one-output main polygonal function generating device 1. Differences between correction values and parameters of the Y axis at respective bend points of the polygonal function outputted from the main polygonal line function generating device 1 are obtained by a subtractor 13 and are stored in analog memories 11a, 11b,... and are inputted to multipliers 3a, 3b,..., and outputs of corresponding polygonal line function generating devices 2a, 2b,... for correction are multiplied by these differences. Multiplication outputs of these multipliers 3a, 3b,... are inputted to an adder 4 through adders 15a, 15b,... and are added to the polygonal line function outputted from the main polygonal line function generating device 1 to obtain the corrected polygonal line function. Stored contents of analog memories 11a, 11b,... are updated by the indication from a write control part 20.

6. 发明专利

JPH07158807A AUTOMATION SYSTEM IN POWER GENERATING FACILITY 失效
公开(公告)号：JPH07158807A
公开(公告)日：1995-06-20
申请号：JP30648793
申请日：1993-12-07
申请人： MITSUBISHI HEAVY IND LTD
发明人： KICHIJIMA NORIO , YOSHIMURA HARUHIKO , MISAWA KAZUYUKI
IPC分类号： F01K13/02 , F22B35/00 , G05B15/02 , H02P9/00
摘要： PURPOSE:To enable a making period for a control circuit for use in performing an automatic operation of a power generating facility and an inspecting period for an actual machine to be shortened and further to enable both energization and stopping of the power generating device to be carried out even in the case that a device computer is troubled. CONSTITUTION:An automatic system for a power generating facility is constructed to have four distributed stages of a full automatic circuit 10A, a break point operating circuit 20A, an auxiliary machine group operating circuit 40A and a single auxiliary machine operating circuit 30A. The full automatic circuit 10A is comprised of an energization switch 1 for instructing an energization of a power generating facility and a full automatic control circuit 1A for performing a controlling of energization and stopping. The break point operating circuit 20A is comprised of operating switches 2A to 2N and control circuits 5A to 5N. In addition, the auxiliary machine group operating circuit 40A is comprised of operation switches 4AA to 4NN and control circuits 7AA to 7NN. The auxiliary machine single device operating circuit 30A is comprised of operation switches 3AAA to 3NNN and control circuits 6AAA to 6NNN for controlling the auxiliary machines.

7. 发明专利

JPH05296404A 失效
公开(公告)号：JPH05296404A
公开(公告)日：1993-11-09
申请号：JP4351991
申请日：1991-03-08
申请人： MITSUBISHI HEAVY IND LTD
发明人： MISAWA KAZUYUKI
IPC分类号： F22B35/04
摘要： PURPOSE:To provide a long life of a steam converting valve by a method wherein water is fed during an operation of the steam converting valve ranging from its full- closed state to its opening operation and the feeding of water is stopped during its closing operation from the full-opened state. CONSTITUTION:A changing-over instruction means receives an opening degree signal of a steam converting valve, sends a signal to changing-over units 10 to 12 from the beginning of its operation starting from its substantial full-closed state and changes over them to their first contact point (g). A full opening instruct 3s is sent from the changing-over units 10 to 12 to a spray flour rate control valve, the spray flow rate control valve is gradually opened and then water is fed. In this way, a metal temperature increasing variation rate of the steam changing-over valve is restricted. The changing-over instruction means sends a signal to the changing-over units 10 to 12 from the beginning of operation ranging from its opened state to full-closed state is restricts and changes over to the second contact point (h). Accordingly, the spray flow rate control valve is closed by a full closing instruction 12s got from the changing- over units 10 to 12 and feeding of water is stopped. Due to this fact, a rapid decreasing in metal temperature caused by over-feeding of spray does not occur. With such an arrangement, it is possible to extend a life of the steam converting valve.

8. 发明专利

JPH09229308A MAIN STEAM PRESSURE CONTROL CIRCUIT FOR VARIABLE PRESSURE ONCE-THROUGH BOILER 失效
公开(公告)号：JPH09229308A
公开(公告)日：1997-09-05
申请号：JP3488096
申请日：1996-02-22
申请人： MITSUBISHI HEAVY IND LTD
发明人： MISAWA KAZUYUKI
IPC分类号： F22B35/00 , F22D1/12 , F22D5/26
摘要： PROBLEM TO BE SOLVED: To provide a circuit, capable of preventing the evaporation of fluid in an economizer surely without being aware of the prevention of evaporation of the fluid in the economizer. SOLUTION: A main steam pressure control circuit is provided with a circuit for operating a feed water amount command 8, a saturated pressure operating program 11 and a high signal selector 9 while a pressure changing program setter 2 inputs a signal from a power generating amount command 1 and outputs a signal (a) to the high signal selector 9. An adder 12 inputs a signal from an economizer outlet port fluid temperature 10, which is inputted through the saturated pressure operating program 11, and the signal of a margin value 13 while outputting a signal (b) to the high signal selector 9. A subtractor 4 inputs a signal (d) from a main steam pressure 3 and the output (c) of the high signal selector 9 while outputting a signal (e) to a regulator 5. Another adder 6 inputs a signal from the power generating amount command 1 and a signal from the regulator 5 while outputting the feed water amount command 8.

9. 发明专利

JPH07210396A COMPILING METHOD FOR PROGRAM IN CONTROLLER 失效
公开(公告)号：JPH07210396A
公开(公告)日：1995-08-11
申请号：JP1221894
申请日：1994-01-10
申请人： MITSUBISHI HEAVY IND LTD
发明人： MISAWA KAZUYUKI , SOGA MASANOBU
IPC分类号： G06F9/45
摘要： PURPOSE:To provide a compiling method for a program in a controller capable of substantially shortening the time required for transmitting the program from a maintenance tool to an execution system and substantially shortening conversion time from the program to a machine language as well. CONSTITUTION:The controller is constituted of the maintenance tool 1 and the execution system 2. Then, the program prepared on the maintenance tool 1 or an intermediate language for which the program is converted on the maintenance tool 1 is transmitted through a cable 3 for communication or a memory medium to the execution system 2 and conversion from the program or the intermediate language to the machine language is performed in the execution system 2.

10. 发明专利

JPH0565806A PLANT MONITORING DEVICE 失效
公开(公告)号：JPH0565806A
公开(公告)日：1993-03-19
申请号：JP22706191
申请日：1991-09-06
申请人： MITSUBISHI HEAVY IND LTD
发明人： INOSAWA YOSHINORI , MISAWA KAZUYUKI , HIGUCHI TOSHINAO , KATSUKI KENJI
IPC分类号： F01K13/02 , F22B35/00 , G01D21/00
摘要： PURPOSE:To enlarge the range in which a plant can be monitored at the time of starting by providing a computing element for an estimated time by the time of each break point an estimated value of the amount of process at the same break point, calculating a reference estimated starting curve, and sending the curve to a comparator. CONSTITUTION:An estimated value and an estimated time of the amount of process at each break point are calculated from the scheduled calculation of a computer 01 for each starting mode to be inputted to a computing element 10. Besides, data on an actual starting curve 11S are inputted. Further, measured values 12S at these break points are also inputted to the computing element. Based on these inputs, the computing element 10 calculates a standard estimated starting curve 10S similar to the actual starting curve of the amount of process to sent it to a comparator 02. The comparator 02 inputs the standard estimated starting curve 10S and corresponding measured data 133 to compare respective corresponding equivalents and to output them. Thus, whether the starting of a plant is performed smoothly or not can be easily evaluated.

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