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1. 发明专利

JPS61252493A CONTROL UNIT OF SEPARATE TYPE HEAT PIPE 失效
公开(公告)号：JPS61252493A
公开(公告)日：1986-11-10
申请号：JP9523285
申请日：1985-05-02
申请人： MITSUBISHI HEAVY IND LTD , KAWASAKI STEEL CO
发明人： HIRAYAMA YUTAKA , TAKANO HIDEKI , SOMA FUYUKI
IPC分类号： F28D15/06 , F28D15/02 , F28F27/00
摘要： PURPOSE:To minutely adjust a heat-exchange mediums of respective units to respective reference flow quantities by calculating the optimal distribution quantity of the heat exchange quantity with respect to a unit from the external condition and maintenance of a high controllability. CONSTITUTION:The requested heat exchange quantity is calculated from signals from a B gas transmitter 9, a B gas flow quantity transmitter 10, an exhaust gas temperature transmitter 11, and an exhaust gas flow quantity transmitter 12 by use of a function 13. By use of a signal from the function 13 the reference flow quantities with respect to respective units are set by functions 14A and 14B. The flow quantities are determined so that respective units are prevented from utilized in a region where the controllability is poor and the negative pressure operation is not carried out. The reference flow quantities are added to signals from water level deviation adjusting meters 7A and 7B of an evaporator. The opening degrees of circulating water control valves 4A and 4B are controlled by the adding signals.

2. 发明专利

JPS61252492A CONTROL UNIT OF SEPARATE TYPE HEAT PIPE 失效
公开(公告)号：JPS61252492A
公开(公告)日：1986-11-10
申请号：JP9523185
申请日：1985-05-02
申请人： MITSUBISHI HEAVY IND LTD , KAWASAKI STEEL CO
发明人： HIRAYAMA YUTAKA , TAKANO HIDEKI , SOMA FUYUKI
IPC分类号： F28D15/06 , F28D15/02
摘要： PURPOSE:To prevent the heat exchange efficiency due to air leakage caused by the negative pressure from deteriorating or to prevent the life of the heat pipe from shortening due to oxidation within the system by mounting a transmitter on a unit to be put into a negative pressure and controlling circulating water of a upstream side unit by detecting and transmitting the internal pressure of the transmitter. CONSTITUTION:When the temperature of an exhaust gas is lowered, the temperature of the exhaust gas at the inlet of a downstream side unit 14B lowers and the temperature of circulating water also lowers. Therefore, an output from a downstream apparatus internal pressure oscillator 8 becomes below an output from an apparatus internal pressure setter 9. Therefore, an output from a pressure deviation adjusting meter 10 becomes below the output from a water level deviation adjusting meter 7A of an upstream side evaporator. Therefore, the apparatus switched to the pressure control by a low level selector 11 and the downstream side unit is prevented from becoming a negative pressure. In a case where the downstream side unit 14B assumes a negative pressure even if the heat exchange in the upstream side unit 14A is put into a zero state, it is sufficient to form said downstream side unit in a construction similar to that of the upstream side unit.

3. 发明专利

JPS61168791A CONTROL METHOD OF SEPARATE TYPE HEAT PIPE 失效
公开(公告)号：JPS61168791A
公开(公告)日：1986-07-30
申请号：JP925785
申请日：1985-01-23
申请人： MITSUBISHI HEAVY IND LTD , KAWASAKI STEEL CO
发明人： TAKEUCHI YUICHI , HIRAYAMA YUTAKA , TAKANO HIDEKI , SOMA FUYUKI
IPC分类号： F28D15/06
摘要： PURPOSE:To perform continuous control that causes less thermal collision and better static characteristics by performing the water level adjustment for temperature control by means of a single closed cycle, and, when one range ability is exceeded, performing the heat exchange rate control with the next cycle. CONSTITUTION:The output of the difference adjusting gauge the receives outputs from the transmitter 6 of exhaust gas outlet temperature and the set value 7 becomes the set value of the water level of the A side vaporizer, and the output of the difference adjusting gause 9 that receives said water level set value and the output from the vaporizer water level transmitter 5a becomes the control signal for the circulating water control valve 4A. In said control system, if the exhaust gas temperature decreases, the setting value of the A side vaporizer water level is lowered to reduce the circulated water flow rate so as to reduce the heat exchanging rate in the vaporizer 1A. If the A side vaporizer water level becomes lower than the water level setting 10, the output of the subtracting unit 11 becomes plus and the output of the low limiter 13 also becomes plus. Therefore, the output of the subtracting unit 15 becomes smaller than the value of the B side vaporizer water level setting 14 to cause the water level of the B side vaporizer B to be lowered to reduce the heat exchanging rate, resulting in theincrease of the exhaust gas temperature.

4. 发明专利

JPH09134203A DISTRIBUTION CONTROLLER 失效
公开(公告)号：JPH09134203A
公开(公告)日：1997-05-20
申请号：JP29412095
申请日：1995-11-13
申请人： MITSUBISHI HEAVY IND LTD
发明人： FUJIWARA TOSHIKATSU , MIYAGAWA HIROKAZU , HIRAYAMA YUTAKA
IPC分类号： G05B13/02
摘要： PROBLEM TO BE SOLVED: To equalize the fluctuation of the respective state quantities of plural processes and to improve control performance. SOLUTION: Function generators 12-14 where the setting states of the state quantities of the respective processes 1a-1c are made to correspond to known disturbance (d) in the operation state of propotional-plus-integrad-plus-derivative (PID) control are provided. Three kinds of values obtained by differentiating deviations with the respective state quantity (x1) 4-state quantity (x3) 6 in differentiation units 49, 50 and 51, squaring them in multipliers 20, 33 and 38 and integrating them in integrators 21, 34 and 39 with the outputs of the function generators 12-14 as target values. The distribution of gains is decided by a value obtained by dividing the respective integral values by the total sum of the integral values. After the distribution of the gains is decided, a value obtained by adding all values obtained by multiplying the value of the deviation between the respective state quantities and the target values by the distribution value of the gain by the gains in coefficient units. Then, a value obtained by adding the value with the output of a PID controller 10 is set to be a manipulated variable (u).

5. 发明专利

JPH06229815A DEVICE FOR INTEGRATING AMOUNT OF POWDER 失效
公开(公告)号：JPH06229815A
公开(公告)日：1994-08-19
申请号：JP1874393
申请日：1993-02-05
申请人： MITSUBISHI HEAVY IND LTD
发明人： HIRAYAMA YUTAKA
IPC分类号： G01G13/00
摘要： PURPOSE:To measure the cumulative amount of powder transported to individual destinations even if destinations are changed for each batch. CONSTITUTION:A load cell 8 measures the weight of powder stored in a transmitter 4 and inputs the measured weight to a maximum value holding circuit 9. The circuit 9 always holds the latest signal and outputs the signal to adder circuits 14a and 14b. A first logic circuit 12 outputs a reset signal 13 to a memory 11 when both carrying-out valves 7a and 7b become idle. A second logic circuit 15 outputs an integration commanding signal 16a or 16b to the adder circuit 14a or 14b corresponding to either one of the valves 17a and 17b when the valve 7a or 7b becomes idle. Upon receiving the signal 16a or 16b, the circuit 14a or 14b integrates the amount of powder transported to each destination by adding weight signals stored in the memory 11 to the integrated value until the preceding time.

6. 发明专利

JPS6388021A APPARATUS FOR CONTROLLING CONCENTRATION OF DISCHARGED NOX OF BOILER 失效
公开(公告)号：JPS6388021A
公开(公告)日：1988-04-19
申请号：JP23191886
申请日：1986-09-30
申请人： MITSUBISHI HEAVY IND LTD
发明人： TAKADA SHUHO , HIRAYAMA YUTAKA
IPC分类号： B01D53/56 , B01D53/34 , B01D53/74
摘要： PURPOSE:To enhance the control performance in the injection quantity of NH3, by a method wherein the load change of a boiler is detected and the future value of the concn. of discharged NOX is outputted from an estimated mathematical model on the basis of the detection value and a NH3 quantity set value is increased and decreased according to the output. CONSTITUTION:The change of discharged NOX accompanying the load change of boiler is calculated as the estimated value X thereof according to formula I [wherein y is a boiler load order, L1 and L2 are a wasted time, G1 and G2 are transfer function excepting the wasted time and W is G1(S).y at the time of L1

7. 发明专利

JPH08261812A DRUM LEVEL DETECTOR FOR STEAM AND WATER DRUM TYPE BOILER 失效
公开(公告)号：JPH08261812A
公开(公告)日：1996-10-11
申请号：JP8880995
申请日：1995-03-22
申请人： MITSUBISHI HEAVY IND LTD
发明人： HIRAYAMA YUTAKA
IPC分类号： G01F23/14
摘要： PURPOSE: To measure a drum level accurately regardless of operation or stoppage in a drum level detector which is attached to a steam and water drum type boiler to measure the water level of the boiler. CONSTITUTION: A condensing pot 4 is connected to an upper steam layer 1a of a drum 1 for detecting a drum level through a horizontal piping 5. Condensed water in the condensing pot 4 is taken out through a third horizontal piping 6 from the bottom surface of the condensing pot 4 to radiate heat sufficiently with the third horizontal piping 6 so that the temperature of the condensed water is lowered almost to the temperature of atmospheric air when flowing into a vertical piping 8. Thus, a hydrostatic head of the vertical piping 8 can be constant through the operation and stoppage of a boiler thereby making possible measuring of the drum level accurately regardless of the operation and stoppage.

8. 发明专利

JPH05290864A 失效
公开(公告)号：JPH05290864A
公开(公告)日：1993-11-05
申请号：JP9133692
申请日：1992-04-13
申请人： MITSUBISHI HEAVY IND LTD , SEIRYO ENG
发明人： NISHIURA MASANORI , HIRAYAMA YUTAKA , KURAHASHI TAKAAKI
IPC分类号： H01M8/04 , H01M8/12
摘要： PURPOSE:To increase utilization efficiency of fuel, and eliminate danger by exhaust gas by mixing inactive gas into fuel gas to be supplied. CONSTITUTION:Fuel gas H2 mixed with inactive gas N2 is supplied to a fuel layer 3 of a power generation furnace 4. The quantity of the fuel gas H2 is thus decreased by the quantity of the inactive gas N2 mixed, so a ratio of H2 of fuel gas to react to the quantity of the supplied fuel gas H2 is increased. Utilization efficiency of the fuel gas H2 can thus be increased, and running cost can be decreased. Because concentration of residual fuel gas H2 in exhaust gas is also decreased, danger by the exhaust gas can be eliminated.

9. 发明专利

JPS62210301A STEAM-TEMPERATURE CHANGE INHIBITION CIRCUIT ON IGNITION AND EXTINCTION OF BURNER 失效
公开(公告)号：JPS62210301A
公开(公告)日：1987-09-16
申请号：JP5314786
申请日：1986-03-11
申请人： MITSUBISHI HEAVY IND LTD
发明人： HIRAYAMA YUTAKA , MURATA RYOICHI
IPC分类号： F22G5/12 , F22B35/00

10. 发明专利

JPS62200402A CONTROLLING CIRCUIT WITH CONTROL OUTPUT SUDDEN CHANGE PREVENTIVE FUNCTION 失效
公开(公告)号：JPS62200402A
公开(公告)日：1987-09-04
申请号：JP4313786
申请日：1986-02-28
申请人： MITSUBISHI HEAVY IND LTD
发明人： HIRAYAMA YUTAKA , FUJIWARA TOSHIKATSU
IPC分类号： G05B11/36 , F22B35/00 , G05B17/02
摘要： PURPOSE:To prevent a sudden change in a model output at the time of switching a parameter of a linear model, and to improve the control performance, by installing a variation rate limiter for limiting a variation rate of an input of an integrator, in front of the integrator of the final stage for constituting a part of the linear model. CONSTITUTION:A variation rate limiter 3 for limiting a variation rate of an input of an integrator 4 is installed in front of the integrator 4 of the final stage. Therefore, when the variation rate of the variation rate limiter 3 is set in advance to the maximum variation rate value within a range in which modeling can be executed correctly at the time of a regular operation of a process being a controlled system, a control output is not brought to a sudden change exceeding a variation rate by which the process can be varied, even at the time of switching of a parameter 5 or a parameter 6 of a linear model by a model switching deciding circuit 7. Accordingly, an abnormal sudden change of a model output is prevented, and an output of the model moves smoothly. In this regard, the variation rate limiter 3 applies a limit to a variation rate of an input of the interrator 4, and sets the variation rate in advance to the maximum variation rate value by which a correct model output can be obtained at the time of a regular operation of the process being the controlled system.

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