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1. 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.

2. 发明专利

JPS57169805A INPUT METHOD OF DIRECT DIGITAL CONTROL 失效
公开(公告)号：JPS57169805A
公开(公告)日：1982-10-19
申请号：JP5591581
申请日：1981-04-14
申请人： MITSUBISHI HEAVY IND LTD
发明人： ISOMURA SHIYUUICHI , YOROZUYO YASUO , SAKAGUCHI KAZUO , SATOU RIYUUICHI , HAYASHI KOUICHIROU , YOSHIDA YASUTAKA , KURIHARA MIKI
IPC分类号： G05B15/02
摘要： PURPOSE:To facilitate an easy correction, by drawing a diagram equal to a plan on a CRT screen, reading and analyzing the diagram through a CPU and then converting the contents of analysis into a data that is easily controlled and calculated to store it. CONSTITUTION:An operator produces a diagram by means of a producing device 1 while looking at a CRT screen 9. In other words, the input data is drawn at an image memory 5 through a memory input control 3 and then displayed on the screen 9 through a memory output control part 7. Both the screen 9 and the memory 5 are divided into small squares, and an optional square is designated by a light pen, etc. Then the control arithmetic element, an arrow mark and a connecting line are drawn into the designated square. After this plotting work, a CPU reads these factors into the memory 5 and an inputted screen display data 11 by an indication of the operator to control them in the form of a screen data. Such diagram is analyzed through the memory 5, the data 11 and a table 13 and converted into a data table having the same contents to be controlled.

3. 发明专利

JPS57169806A INPUT METHOD OF DIRECT DIGITAL CONTROL 失效
公开(公告)号：JPS57169806A
公开(公告)日：1982-10-19
申请号：JP5591681
申请日：1981-04-14
申请人： MITSUBISHI HEAVY IND LTD
发明人： ISOMURA SHIYUUICHI , YOROZUYO YASUO , SAKAGUCHI KAZUO , SATOU RIYUUICHI , HAYASHI KOUICHIROU , YOSHIDA YASUTAKA , KURIHARA MIKI
IPC分类号： G05B15/02
摘要： PURPOSE:To facilitate an easy correction, by drawing a diagram equal to a plan on a CRT screen, reading and analyzing the diagram through a CPU, converting the contents of analysis into a data to store it in such way executing a control operation. CONSTITUTION:An operator produces a diagram through an image memory 5 by means of a producing device 1 while looking at a CRT screen 9. In other words, an optional square is designated with a light pen, etc. among small divided ones of the screen 9 and the memory 5. Then the control arithmetic elements, an arrow mark, a connecting line, etc. are drawn into the designated square. After this plotting work, a CPU reads these factors into the memory 5 and an inputted screen display data 11 to control them in the form of a screen data. Such diagram is analyzed through the memory 5, the data 11 and a table 13 to be converted into a data table. The control arithmetic is performed by calling out a subroutine of a PI arithmetic if the individual element within the diagram is PI.

4. 发明专利

JPH03221713A FUEL SUPPLYING DEVICE FOR THERMAL POWER PLANT BOILER 失效
公开(公告)号：JPH03221713A
公开(公告)日：1991-09-30
申请号：JP1486690
申请日：1990-01-26
申请人： MITSUBISHI HEAVY IND LTD
发明人： KICHIJIMA NORIO , KATSUKI KENJI , KURIHARA MIKI
IPC分类号： F23N1/08 , F22B35/00
摘要： PURPOSE:To minimize influence on a water-cooled wall outlet temperature and to suppress variation of main steam temperature efficiently by a method wherein the flow rate of fuel is controlled for a plurality of burners located at the upper stage side near an over-heater and located at the lower stage and then a water-to-fuel ratio is corrected only for the flow rate of fuel in the upper stage burner. CONSTITUTION:In the event that the number of burners is five, for example, the burners are divided into upper three stages near a final over-heater and opposite lower two stages. A volume of fuel proportionally distributed to the two burner stages is supplied to the lower two stages (a stage A and a stage B) under a boiler input instruction, a water-fuel ratio is added to a value in which a boiler input instruction is proportionally distributed to the upper three stages (a stage C, a stage D and a stage E) for three stages of the burner and then this is supplied as fuel. With such an arrangement, it is possible to reduce influence against a water-cooled wall of which temperature is governed by the lower stage burner fuel and further improve the effect of water-to-fuel ratio against a final over-heater of which temperature is governed by the upper stage burner fuel. Actually, in the event that the fuel exceeds the upper limit and the lower limit of a burner volume due to a substantial variation of load, values of proportional distributors 36 and 37 are corrected in response to the actual number of burners due to the fact that the number of burners is also varied.

5. 发明专利

JPS59157716A Digital plant control system 失效
标题翻译：数字植物控制系统
公开(公告)号：JPS59157716A
公开(公告)日：1984-09-07
申请号：JP3043883
申请日：1983-02-25
申请人： Mitsubishi Heavy Ind Ltd
发明人： SATOU RIYUUICHI , TEJIMA TOSHIAKI , NAKAMURA NAOTOMI , KURIHARA MIKI
IPC分类号： G05B17/00 , G05B23/02
CPC分类号： G05B23/0286
摘要： PURPOSE:To adjust a system on the assumption that a plant is in an abnormal operation state and an emergency operation state by generating a program having the same function as a simulation device and storing this program in an upper computer preliminarily. CONSTITUTION:When simulation adjustment is executed, data input/output processings between lower computers 21a, 21b- and a plant 13 are stopped by a command of an upper rank computer 20. The simulation operation which simulates the dynamic characteristic of the plant 13 is executed by the upper computer 20, and a mimic plant signal as the operation result is supplied to lower rank computers 21a, 21b-. Then, lower computers 21a, 21b- executes control operations in accordance with the mimic plant signal according with a simulation program of the upper computer 20 and supply attained mimic operation signals to the mimic plant to the upper computer 20.
摘要翻译：目的：通过生成具有与模拟装置相同功能的程序并将该程序预先存储在上位机中，假设工厂处于异常操作状态和紧急操作状态的系统。构成：当执行模拟调整时，下位机21a，21b与工厂13之间的数据输入/输出处理由上级计算机20的命令停止。执行模拟工厂13的动态特性的模拟操作并且作为操作结果的模拟植物信号被提供给下位计算机21a，21b-。然后，下部计算机21a，21b根据模拟工厂信号根据上位计算机20的模拟程序执行控制操作，并将模拟操作信号的模拟操作信号提供给上位计算机20。

6. 发明专利

JPS57169804A INPUT METHOD OF DIRECT DIGITAL CONTROL 失效
公开(公告)号：JPS57169804A
公开(公告)日：1982-10-19
申请号：JP5591481
申请日：1981-04-14
申请人： MITSUBISHI HEAVY IND LTD
发明人： ISOMURA SHIYUUICHI , YOROZUYO YASUO , SAKAGUCHI KAZUO , SATOU RIYUUICHI , HAYASHI KOUICHIROU , YOSHIDA YASUTAKA , KURIHARA MIKI
IPC分类号： G05B15/02
摘要： PURPOSE:To store a screen data of a diagram, by drawing a diagram equal to a plan on a CRT screen and then reading the diagram through a CPU. CONSTITUTION:An operator produces a diagram by means of a producing device 1 while looking at a CRT screen 9. In other words, the data supplied through the device 1 is drawn at an image memory 5 via a memory input control part 3 and at the same time displayed on the screen 9 via a memory output control part 7. Both the screen 9 and the memory 5 are divided into small squares, and an optional square is designated by a light pen, etc. Then control arithmetic elements AND and OR, an arrow mark, a connecting line, etc. are designated and drawn into the designated square. When the functioning of the diagram is over on the screen, a CPU performs the reading via a route of an image memory 5 and then an inputted screen display data 11 to control the information in the form of a screen data of the diagram.

7. 发明专利

JPH0628002B2 失效
公开(公告)号：JPH0628002B2
公开(公告)日：1994-04-13
申请号：JP3902582
申请日：1982-03-12
申请人： MITSUBISHI HEAVY IND LTD
发明人： HAYASHI KOICHIRO , TEJIMA TOSHIAKI , NAKAMURA NAOTOMI , KURIHARA MIKI
IPC分类号： G05B9/03

8. 发明专利

JPH04262004A RUN-BACK METHOD IN ELECTRIC SYSTEM FAILURE 失效
公开(公告)号：JPH04262004A
公开(公告)日：1992-09-17
申请号：JP2235291
申请日：1991-02-15
申请人： MITSUBISHI HEAVY IND LTD
发明人： TAKAHIRA YUKIMI , KUROISHI TAKUJI , KURIHARA MIKI
IPC分类号： F01D17/24
摘要： PURPOSE:To provide a run-back method for speedily reducing the output of a power generator, controlling the pressure and temperature of a boiler to the reference values, by controlling the output of the power generator through turbine governor in the turbine following state, and by controlling the boiler pressure through a turbine bypass regulating valve, in an electric system failure. CONSTITUTION:A switching device 51 is interposed in the output passage of a variation rate limiter 32 for obtaining the base body demand (MWD) 33 of a unit, and the demand in accordance with the electric system failure run-back target value 52 is selectively outputted in substitution for the demand outputted from the variation rate limiter 32 when run-back is generated. Further, a switching device 53 is interposed in the output passage of an adjuster (PI) 47, and a turbine bypass regulating valve 8 is opening-degree-controlled on the basis of the output of a pressure control regulator (PI) 46 when run-back is generated.

9. 发明专利

JPS59153025A Control method of number of burner 失效
标题翻译：燃烧器数量控制方法
公开(公告)号：JPS59153025A
公开(公告)日：1984-08-31
申请号：JP2587483
申请日：1983-02-18
申请人： Mitsubishi Heavy Ind Ltd
发明人： TEJIMA TOSHIAKI , NAKAMURA NAOTOMI , KURIHARA MIKI
IPC分类号： F23N5/18 , F23N5/00 , F23N5/24 , G05B11/18
CPC分类号： F23N5/242
摘要： PURPOSE:To prevent shortage of fuel or a burner trip at the time of a sudden change of a load from occurring, by signaling burner point.fire extinction instructions when pressure of a point.fire extinction level coincides with that of a burner header. CONSTITUTION:A burner header pressure signal (p), a number of burners' signal (n) and a load variation ratio signal dL/dt are used for signalling of ignition (fire extinction) instructions, pressure of a point.fire extinction level is obtained as a function of a load variation ratio and burner point.fire extinction instructions are signaled when the pressure coincides with that of a burner header. With this construction, shortage of fuel or a burner trip at the time of a sudden change of a load can be prevented from occurring.
摘要翻译：目的：为了防止在发生突然的负载变化时燃料不足或燃烧器跳闸，通过在点火熄灭水平的压力与燃烧器头部的压力一致时，通过燃烧器点火灭火指令进行指示。构成：燃烧器头部压力信号（p），多个燃烧器信号（n）和负载变化率信号dL / dt用于点火指示（灭火）指示，点火压力消光水平为作为负载变化率和燃烧器点的函数获得。当压力与燃烧器头部的压力一致时，发出熄灭指示。通过这种结构，可以防止在负载突然变化时燃料短缺或燃烧器跳闸。

10. 发明专利

JPS57169807A INPUT METHOD OF DIRECT DIGITAL CONTROL 失效
公开(公告)号：JPS57169807A
公开(公告)日：1982-10-19
申请号：JP5591781
申请日：1981-04-14
申请人： MITSUBISHI HEAVY IND LTD
发明人： ISOMURA SHIYUUICHI , YOROZUYO YASUO , SAKAGUCHI KAZUO , SATOU RIYUUICHI , HAYASHI KOUICHIROU , YOSHIDA YASUTAKA , KURIHARA MIKI
IPC分类号： G05B15/02
摘要： PURPOSE:To facilitate an easy control of a diagram, by showing the connecting relation among the elements within the diagram in the form of a matrix and at the same time showing the connecting contents among the elements in the form of a connecting code. CONSTITUTION:The connecting relation of a diagram is analyzed by a computer to produce a matrix as shown in the figure, and a control arithmetic is carried out based on the matrix. Thus an operator has not to have a concern in the matrix table. For instance, SIGMA of an element 8 in the figure is supplied through elements 7 and 13 for connection. When this relation is examined on the line of the element 8 on the matrix table, it is found that the columns 7 and 13 are set at 1 with other columns set at 0. In such way, the number of the element that has a connecting output is known by examining the matrix of each element number. For the contents of connection, DELTA(DLT) of the element 8 for example has the negative and positive connections from the elements 1 and 2 respectively. Thus the contents of connection is shown by the connecting matrix of the table by deciding a connecting code.

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