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    • 12. 发明专利
    • PLANT OPERATION TRAINING SUPPORTING DEVICE
    • JPH06348682A
    • 1994-12-22
    • JP15785993
    • 1993-06-03
    • MITSUBISHI HEAVY IND LTD
    • TANAKA AKURIMINOTE YUUICHINAGANO OSAMU
    • G09B9/00G06F19/00G06F15/20
    • PURPOSE:To provide a plant operation training supporting device by which a trainee can independently learn the operation of a plant and operations without requiring an instructor. CONSTITUTION:This plant operation training supporting device 1 is provided with a correspondence operation filing device 6 for storing simulated operation information relating to the operation of the plant and information relating to correction based on an operated result, etc., and a display device 5 for displaying the information and supplying instructions to the trainee. Further, this device is composed of an input device 2 operated corresponding to the instructions, a judging device 4 for comparing input data with the data stored in the correspondence operation filing device, letting training continued when the operation is correct, letting the training tentatively suspended and displaying the correct operation and the meaning at the display device when the operation is an error and cancelling the suspension and letting the training restarted when the correct operation is performed by it and a processor 3 for performing processing such as the taking out and conversion, etc., of the data among the respective devices.
    • 14. 发明专利
    • Flow rate control circuit
    • 流量控制电路
    • JPS61121101A
    • 1986-06-09
    • JP24222584
    • 1984-11-19
    • Mitsubishi Heavy Ind Ltd
    • NAGANO OSAMUHIRATA DAISAKUMIYATA TERUOMIZUOCHI KIYOSHI
    • G05D7/06F01K9/02G05B7/02G05B11/42
    • F01K9/023
    • PURPOSE:To attain the quick follow-up to the change of the primary steam amount by connecting a bypass system consisting of a function generator and a constant multiplier to a PI control circuit for flow rate control valve and adding the output of said bypass system to the output of the PI control circuit. CONSTITUTION:When a flow rate control circuit is applied as shown in the figure to a boiler water supply pump, a bypass system consisting of a function generator 10' and a constant multiplier 11' is provided in parallel to a PI controller 7, a subtractor 8 and a PI controller 9. The output of the bypass system is added to the output of the controller 9 through an adder 12'. Then a valve control command signal LD is delivered for operation of the high and low pressure steam control valves 1 and 2 respectively. The low rate control is carried out just through a PI control system in case the output value of a subtractor 6 is smaller than the output of the adder 12'. While a circuit consisting of the generator 10' and the multiplier 11' works to change greatly the output value of the adder 12' in case this output value is large. Thus the levels of control signals to be applied to the valves 1 and 2 are increased per unit time to secure the quick changes of both valves for control of the flow rate.
    • 目的:通过将由功能发生器和恒定乘数组成的旁路系统连接到流量控制阀的PI控制电路,将所述旁路系统的输出相加,从而快速跟踪主蒸汽量的变化 PI控制电路的输出。 构成:当流量控制电路如图所示应用于锅炉给水泵时,由功能发生器10'和常数乘法器11'组成的旁路系统与PI控制器7并联设置,减法器 8和PI控制器9.旁路系统的输出通过加法器12'加到控制器9的输出端。 然后分别输送用于操作高压和低压蒸汽控制阀1和2的阀控制指令信号LD。 在减法器6的输出值小于加法器12'的输出的情况下,仅通过PI控制系统执行低速率控制。 而由发生器10'和乘法器11'组成的电路可以在输出值大的情况下大大改变加法器12'的输出值。 因此,施加到阀1和2的控制信号的电平每单位时间增加以确保用于控制流量的两个阀的快速变化。
    • 16. 发明专利
    • EMERGENCY WORKING DEVICE
    • JPS5799221A
    • 1982-06-19
    • JP17375680
    • 1980-12-11
    • MITSUBISHI HEAVY IND LTDMITSUBISHI ELECTRIC CORP
    • NAGANO OSAMUOKADA MASANOBUYAMADA SHIGENOBUSHINOHARA KOUICHI
    • F01K13/02F01K13/00
    • PURPOSE:To prevent a linked tripping of the whole plant at the time of occurrence of a trouble anywhere in a generating plant, which has two or more boilers, turbines and generator machines and feeds a varying amount of power, by furnishing an emergency working device separate from the controller of conventional type. CONSTITUTION:This emergency working device is composed of an expected load calculator 5 to put out the regular load upon receiving an emergency input signal 4 from the plant 2, a turbine load and air bleeding calculating/setting device 8 to set a target value for the turbine output and the amount of bled air, and load selecting and shutoff setting device 9 to set the shutoff of the air bleeding and electric load in accordance with the sort of emergency. Further this is equipped with a steam balance calculator 10, a air bleeding mode calculator 11, a by-pass valve opening/closing calculator 12, a boiler evaporation calculator 13, a relay setting signal generator 14 whose input is connected with the outputs of the turbine load and air bleeding/setting device 8 and the load selecting and shutoff setting device 9, and an emergency action signal generator 15 connected with the inputs to the plant 2.