TWI795721B - Control device, control method, and program-recorded recording medium - Google Patents

Abstract

The present invention provides a control device for stabilizing the combustion state of garbage incineration equipment. The control device of the present invention includes: a garbage supply amount control unit that controls the supply of garbage supplied to the furnace of the garbage incinerator so that the steam flow rate of the steam generated by the garbage incinerator becomes a specific first set value; and air A flow rate control unit calculates a control value of the air flow rate such that the sensitivity of the steam flow rate to a change in the air flow rate of the air supplied to the furnace becomes a specific second set value.

Description

Control device, control method, and program-recorded recording medium

The disclosure relates to a control device, a control method and a program of a waste incineration equipment. The present invention application claims its priority based on Japanese Invention Patent Application No. 2020-30344 filed in Japan on February 26, 2020, and its content is cited in this application.

Garbage is used as fuel in waste-to-energy in which a boiler is installed in a waste incinerator, the heat generated during waste incineration is recovered, and the steam generated is used to generate electricity. In order to eliminate the uneven power generation of waste-to-energy, it is indispensable to make the combustion of waste stable and generate steam as planned.

In Patent Document 1, it is disclosed that by detecting the steam flow rate of the steam supplied from the boiler of the garbage incinerator to the power plant, and based on the detected steam flow rate, the supply amount of garbage and air supplied to the garbage incinerator is adjusted, and A control device for stable combustion of garbage. The control device, for example, reduces the amount of garbage supplied to the furnace when the steam flow exceeds a reference value, and reduces the drying area, combustion area, and post-combustion area of the moving bed that moves the garbage in the furnace. supplied air flow. In addition, the control device increases the supply of garbage and the supply of air to the drying area and the burning area when the steam flow rate is lower than the reference value.

The composition of the garbage supplied to the garbage incinerator is varied. Garbage such as plastic bags burns up instantly when supplied to the furnace. With the response speed of the air supply system installed in the garbage incinerator, it is difficult to adjust the burning of garbage such as plastic bags. On the other hand, since wet garbage such as kitchen waste has moisture, even if it is supplied to the furnace, it will not burn immediately, but must wait until it is dried. For such garbage, the time from drying to burning can be used to control burning. The following applies to dried and incinerated garbage.

The heat output of a waste incinerator is obviously proportional to the rate at which the waste is burned. The burning speed of garbage is represented by the following formula (1). g _B =k _B・m _B・・・・・・(1) Here, k _B mainly represents the coefficient of combustion-supporting property determined by the oxygen concentration, and the value becomes larger by increasing the supply of air to the waste incinerator . m _B is the mass (inventory) of waste that has been dried and turned into fuel. If the adjustment amount of the combustion speed is represented by Δg _B , it is expressed as the following formula. Δg _B =k _B・Δm _B + Δk _B・m _B・・・・(2)

Referring to formula (2), consider two methods of controlling the burning rate. The first method is based on the first item (k _B ·Δm _B ) on the right, and it is a method of controlling the amount of garbage that is used as fuel to be supplied to the incinerator. This method is effective assuming that it is possible to supply a desired amount of garbage that has been dried and immediately becomes fuel, but actually, the garbage that can adjust the supply amount to the garbage incinerator is the garbage before drying. Therefore, the supplied garbage will not burn immediately due to moisture, and must stay temporarily in the furnace until it is dry and turned into fuel. Or, when garbage forms a large block, in order to burn at the center, it may be necessary to wait for the block to collapse. For these reasons, this method is not quick-responsive. Therefore, even if the amount of rubbish supplied is controlled, it may not be able to be immediately controlled to a desired burning rate.

The second method is based on the second item (Δk _B ·m _B ) on the right side of formula (2), and controls the supply of air to the furnace. In the garbage incinerator, since there is a stock of dried garbage, if the air supply is increased, the combustion speed will increase and the heat output will increase. For example, in the control method described in Patent Document 1, when the amount of steam is lower than the reference value, the amount of air supplied is increased.

According to the formula (2), it can be known in detail that the sensitivity of the combustion speed adjustment Δg _B to the air supply adjustment Δk _B is the stock m _B of dry and fuelized garbage. If the value of the garbage stock m _B can be managed to be constant and Δk _B can be adjusted, the combustion rate adjustment amount Δg _B can be controlled. If Δg _B can be adjusted, the combustion state can be controlled to a desired state.

As a related technique, Patent Document 2 describes a control for stabilizing the burning of garbage by setting the burnout level of garbage to be constant. In Patent Document 2, the burnout level of garbage is defined as the sum W1+W2 of the garbage mass W1 in the dry area of the wet garbage accumulation and the garbage mass W2 in the burning area of the dried garbage accumulation. As mentioned above, the garbage in the dry area will not become fuel until it is dry. Therefore, even if the burnout level of garbage is constant, the burning state may vary depending on the details. For example, if the stock of dry garbage is piled up thickly, and the garbage layer collapses in such a state, the overall burning speed in the furnace will suddenly increase, which may cause a large disturbance to the steam flow, etc. .

Also, in Patent Document 3, it is difficult to increase the supply of garbage due to an increase in the specific gravity of the garbage due to the compaction of the garbage at the bottom of the hopper, or when the specific gravity of the garbage itself thrown into the hopper is large. For the quantitative supply of garbage, a method has been disclosed to control the speed of the push rod that presses out the garbage into the furnace in such a way that the specific gravity of the garbage in the hopper becomes constant and the weight of the garbage supplied is constant. [Prior Art Literature] [Patent Document]

[Patent Document 1] Japanese Patent Publication No. 03-023806 [Patent Document 2] Japanese Patent Laid-Open No. 61-36611 [Patent Document 3] Japanese Patent Laid-Open No. 2001-355819

[Problem to be solved by the invention]

In order to keep the combustion state of the garbage incinerator in the desired state, it is necessary to manage the stock m _B of combustible garbage and control the burning speed of the garbage.

This disclosure provides a control device, a control method, and a program-recorded recording medium capable of solving the above problems. [Technical means to solve the problem]

The control device of the present disclosure includes: a garbage supply volume control unit, which controls the supply volume of garbage supplied to the furnace of the garbage incineration equipment so that the steam flow rate of the steam generated by the garbage incineration equipment becomes a specific first set value; and The air flow control unit calculates a control value of the air flow such that the sensitivity of the steam flow to a change in the air flow of the air supplied to the furnace becomes a specific second set value.

The control device of the present disclosure is equipped with a garbage supply amount control unit that calculates the supply amount of garbage supplied to the furnace of the garbage incineration facility, and calculates the steam flow rate of the steam generated by the garbage incineration facility as a specific first setting Calculate the sensitivity of the steam flow rate to the change of the air flow rate of the air supplied to the furnace, and obtain the second supply amount of the aforementioned garbage at a specific second set value, and calculate the second supply amount of the aforementioned garbage The amount is added to the aforementioned first supply amount to calculate the aforementioned supply amount.

In addition, the control method of the present disclosure controls the amount of garbage supplied to the furnace of the garbage incineration facility so that the steam flow rate of the steam generated by the garbage incineration facility becomes a specific first set value, and calculates the ratio of the steam flow rate to the supply The sensitivity to the change of the air flow rate of the air to the aforementioned furnace becomes the control value of the aforementioned air flow rate as the specified second set value.

In addition, the recording medium of the present disclosure is a recording medium recording a program for making a computer function as a mechanism for controlling the flow rate of the steam generated by the waste incineration facility to a specific first set value. Mechanism for supplying waste to the furnace of the above-mentioned waste incineration equipment: and calculating the control value of the above-mentioned air flow so that the sensitivity of the above-mentioned steam flow to the change of the air flow of the air supplied to the above-mentioned furnace becomes a specific second set value organization. [Effect of Invention]

According to the above-mentioned control device, control method, and program-recorded recording medium, the combustion state of garbage can be stabilized.

Hereinafter, the control device of the waste incineration facility according to each embodiment will be described in detail with reference to FIGS. 1 to 18 .

(constitute) Fig. 1 is a diagram showing an example of main parts of a waste incineration facility in each embodiment. The garbage incineration equipment 100 is equipped with: a hopper 1, which is used to input garbage; a push rod 2, which supplies the garbage input into the hopper 1 to the combustion chamber 6; a feeder 3, which receives the garbage supplied by the push rod 2, while transferring the garbage, Drying and combustion are carried out on one side; combustion chamber 6, which burns garbage; ash outlet 7, which discharges ash; blower 4, which supplies air; a plurality of bellows 5A-5E, which send the air supplied by blower 4 to the feeder 3 Guidance to various ministries; and Boiler 9.

The push rod 2 is arranged at the lower part of the hopper 1, and pushes the garbage supplied into the hopper 1 to the combustion chamber 6 by advancing and retreating with a specific stroke, and supplies the garbage to the feeder 3 in the combustion chamber 6. The push rod 2 receives the control signal from the control device 20, and performs the action of pressing out the garbage.

The feeder 3 has: a drying area 3A, which evaporates the moisture of the garbage supplied by the push rod 2 to dry it; a combustion area 3B, which is located in the wake of the drying area 3A, and burns the dried garbage; and a post-combustion area 3C, which is located in the wake of the combustion area 3B, burns unburned components such as fixed carbon components that pass through without burning until they become ash. Receive the control signal from the control device 20, and the action speed of the feeder 3 is controlled.

The blower 4 supplies air to each part of the feeder 3 through the bellows 5A to 5E provided below the feeder 3 . For example, if the supply amount of air in the combustion area 3B is increased, the combustion of garbage is promoted. The blower 4 receives the control signal from the control device 20, and changes the air flow of the air boxes 5A-5E. In addition, a valve 8A is provided in the pipeline connecting the air blower 4 and the air box 5A, and the flow rate of air supplied to the air box 5A can also be adjusted by adjusting the opening of the valve 8A. Similarly, by adjusting the opening degrees of the valves 8B to 8E, the flow rates of the air supplied to the bellows 5B to 5E can be respectively controlled. A control signal from the control device 20 is received, and the opening degrees of the valves 8B-8E are controlled.

The combustion chamber 6 includes a primary combustion chamber 6A and a secondary combustion chamber 6B above the feeder 3 , and the boiler 9 is arranged in the combustion chamber 6 . The boiler 9 generates steam by exchanging heat between the exhaust gas sent from the combustion chamber 6 and the water circulating in the boiler 9 . The steam is supplied to the power plant via the pipeline 10 . The pipeline 10 is provided with a steam flow sensor 11 for detecting the flow of steam. The steam flow sensor 11 is connected to the control device 20 , and the measured value measured by the steam flow sensor 11 is sent to the control device 20 . A flue 12 is connected to the exhaust gas outlet of the boiler 9, and the exhaust gas recovered by the boiler 9 passes through the flue 12 and exhaust gas treatment equipment not shown in the figure, and then is discharged to the outside. The flue 12 is provided with a CO concentration sensor 13 and an O ₂ concentration sensor 14 . The CO concentration sensor 13 and the O ₂ concentration sensor 14 are connected to the control device 20 , and the measured values measured by the CO concentration sensor 13 and the O ₂ concentration sensor 14 are sent to the control device 20 .

The control device 20 includes a data acquisition unit 21 , an air flow control unit 22 , a garbage supply amount control unit 23 , and a garbage transport control unit 24 . The data acquisition unit 21 acquires various data such as measured values of sensors and user command values. For example, the data acquisition unit 21 acquires the measured value measured by the steam flow sensor 11 . The air flow control unit 22 controls the operation of the blower 4 by outputting a control signal to the blower 4 , thereby controlling the flow of air supplied to the feeder 3 . Moreover, the air flow control part 22 outputs a control signal to valve 8A-8E, adjusts the opening degree of each of valve 8A-8E, and controls the air flow rate supplied to bellows 5A-5E. The garbage supply amount control unit 23 controls the movement of the push rod 2 by outputting a control signal to the push rod 2 , thereby controlling the amount of garbage supplied to the combustion chamber 6 . For example, the refuse supply amount control unit 23 calculates the supply amount of the refuse such that the measurement value measured by the steam flow sensor 11 becomes a specific set value, and outputs the form so that the push rod 2 can supply the supply amount to the combustion chamber 6 Extended control signal. For example, if the measured value of the steam flow rate is lower than the set value, the garbage supply amount control unit 23 increases the amount of garbage supplied, and if the measured value of the steam flow rate exceeds the set value, decreases the amount of garbage supplied. The refuse conveyance control unit 24 outputs a control signal to the feeder 3 to control the conveyance speed of the refuse by the feeder 3 .

<First Embodiment> FIG. 2 is a diagram illustrating a control method of the first embodiment. In this embodiment, the inventory m _B of dried and fuelized garbage is managed to stabilize the burning of garbage. As can be seen from the above formula (2), m _B can be estimated from the sensitivity of the combustion rate to the amount of air supplied. Therefore, in this embodiment, the air supply rate is changed, and the response of the burning speed of the garbage in the furnace (combustion chamber 6) is obtained. As an indicator of the burning rate, for example, the vapor flow rate can be used. As another example, for example, the temperature of the exhaust gas discharged from the furnace can be used as an indicator of the combustion rate. The relationship between air flow and steam flow is shown in the graph in Figure 2 . In Fig. 2, the vertical axis represents the steam flow rate, and the horizontal axis represents the air flow rate. In FIG. 2, a curve 310 is shown, which represents the relationship between the air flow rate supplied to the furnace and the measured value of the steam flow rate measured by the steam flow sensor 11 under the condition that the amount of fuelized garbage m _B is relatively large. ; and curve 320, which represents the relationship between the air flow and the steam flow when m _B is small. The left end of these curves (the area on the left side compared to A0 shown in the figure) is the area with insufficient air. When the air is insufficient, the steam flow rate is determined by the air flow rate given regardless of the size of the fueled garbage stock m _B. The right end (the area to the right of C0 in the figure) is the area with excess air. When the air is excessive, the steam flow rate does not depend on the air flow rate, but is determined by the stock m _B of fuelized garbage. In the intermediate region between the two, the gradient (sensitivity) of the curves 310, 320 changes corresponding to the value of m _B and the air flow.

For example, consider operating while maintaining the steam flow rate at D. At this time, in the same situation as the curve 320 where the stock m _B of fuelized garbage is small, the air flow rate is B and balanced. However, even in the same situation as m _B is the curve 310, if the air flow rate is A, the vapor flow rate is also D and balanced. In this way, even if the steam flow rate is determined as a point of D, the stock m _B of fuelized garbage is also uncertain. It is related to the degree of freedom of operation, and on the other hand, it expresses the necessity of managing the stock of waste. For example, if the stock of garbage becomes too large, it may cause problems such as discharge before being burned in the incinerator.

As an avoidance measure, it is considered to manage the gradient (Δg _steam )/(Δg _air ) of the curve of the steam flow rate versus the air flow rate to a preset value. For example, in FIG. 2 , the gradient of the curve is determined to be the value formed by the curve 310 at the flow B of air. In this way, for the curve 320 where m _B is large, the vapor flow rate E becomes an equilibrium point. That is, if the vapor flow rate and the gradient of the curve are determined, the value of the stock m _B of dry and fuelized garbage can be determined as one. In this embodiment, by utilizing this property, m _B is managed to a constant value, and the steam flow rate (combustion rate) is kept constant, thereby stabilizing the combustion state of the waste incinerator.

The steam flow rate can be monitored by acquiring the measured value of the steam flow sensor 11 . Hereinafter, a method for detecting gradients will be described. The burning of garbage varies steadily and is not constant in time. Thus, in a method of investigating the response of vapor flow to increasing or decreasing air flow, the response is overwhelmed by steady variation. In order to detect the response with high precision, it is also considered to increase the increase and decrease range of the air flow rate, but if the air flow rate is greatly increased or decreased, it will disturb the stable operation of the waste incinerator 100 . Therefore, the air flow rate is changed in a sine wave form at a specific cycle, such as a cycle of about 1 minute, within a range that does not adversely affect the operation of the waste incinerator 100, and only the air flow rate is detected by the response from the steam flow rate. cyclical elements, while excluding the effects of steady changes. An example of a method of showing the change in air flow rate in equation (3).

[number 1]

Since the response appears at the same period when the air is changed at a period of 1 minute, the amplitude of the component of the steam flow rate at a period of 1 minute is detected by Fourier transform and using formula (4).

[number 2]

Furthermore, Δg _steam [t]=g _steam [t]−E(g _steam ). Here, E(g _steam ) is an expected value of g _steam [t], for example, an average value over one cycle. In this way, if the periodic change of the steam flow rate corresponding to the periodic change of the air flow rate can be detected, and the steam flow rate can be controlled to a specific value, and the gradient (Δg _steam )/(Δg _air ) can be controlled to a specific value, Then, while keeping the value of the stock m _B of fuelized garbage constant, the burning speed can be controlled constant, and the burning state can be stabilized.

(constitute) Next, the function and structure of the air flow control unit 22 of the first embodiment will be described. Fig. 3 is a diagram showing an example of the functional configuration of the control device of the first embodiment. The configuration of the air flow control unit 22 of the present embodiment in the control device 20 is shown in FIG. 3 . About the data acquisition part 21, the air flow control part 22, and the refuse transfer control part 24, it is the same as what demonstrated using FIG. 1. FIG. The air flow control unit 22 includes: a basic control unit 2201, an air flow periodic change generation unit 2202, a gradient setting unit 2203, a PI (Proportional Integral, proportional integral) control unit 2204, a response amplitude detection unit 2205, a gradient calculation unit 2206, and an addition unit. 2207, a subtraction unit 2208, and a subtraction unit 2209.

The basic control unit 2201 outputs the set value of the air flow in the combustion state where the value of the steam flow measured by the steam flow sensor 11 becomes a specific set value.

The air flow cycle change generation unit 2202 calculates an increase/decrease value for increasing or decreasing the air flow at a specific cycle. The air flow cyclical change generation unit 2202 calculates the increase/decrease value using, for example, the second term on the right side of the formula (3).

The gradient setting unit 2203 calculates and outputs the set value of the gradient corresponding to the set value of the specific steam flow rate. The value of the gradient is preset for each setpoint of vapor flow.

The PI control unit 2204 calculates the correction amount 11 of the air flow rate at which the deviation between the set value of the gradient and the actual gradient (calculated value of the gradient calculated based on the steam flow rate and the air flow rate) becomes zero.

The response amplitude detection unit 2205 detects a change in the steam flow rate with respect to the air flow rate which is changed at a constant cycle by the air flow rate cycle change generating unit 2202 . The response amplitude detection unit 2205 detects periodic changes in the amplitude of the steam flow rate based on, for example, Equation (4).

The gradient calculation unit 2206 calculates the gradient (Δg steam ) based on the minute time change (Δg _steam ) of the amplitude detected by the response amplitude detection unit 2205 and the minute time change (Δg _air ) of the air flow rate calculated by the air flow control unit 22 . _steam )/(Δg _air ).

(action) First, the basic control unit 2201 calculates the set value of the air flow rate, and outputs the value to the addition unit 2207 . The air flow cycle change generation unit 2202 calculates the increase and decrease of the air flow, and outputs the value to the subtraction unit 2208 . The subtraction unit 2208 subtracts the correction amount 11 (initial value=0) from the increase/decrease value to calculate the correction amount 12 . The subtraction unit 2208 outputs the correction amount 12 to the addition unit 2207 . The adding unit 2207 adds the correction amount 12 to the set value of the air flow. The air flow control unit 22 sets the added value as the air flow set value A22-1 of the present embodiment. The air flow control unit 22 calculates the rotational speed command value of the air blower 4 and the opening degree command values of each of the valves 8A to 8E based on the air flow set value A22-1. The air flow control unit 22 controls the air flow rate sent by the blower 4 based on the calculated rotation speed command value, and controls the opening degrees of the valves 8A to 8E based on the opening degree command value.

Next, the air flow control unit 22 acquires the measured value of the steam flow measured by the steam flow sensor 11 through the data acquisition unit 21 . The response amplitude detection unit 2205 extracts the response component to the periodic air flow change generated by the air flow periodic change generation unit 2202 by Fourier transform from the change in the measured value of the steam flow rate, and calculates the periodic amplitude of the steam flow rate change. The response amplitude detection unit 2205 outputs to the gradient calculation unit 2206 information indicating a change in the periodic amplitude of the vapor flow rate. Next, the gradient calculation unit 2206 compares the change of the air flow per cycle with the change of the corresponding steam flow per cycle, and calculates the change (Δg _air ) of the air flow for each minute time of the steam flow. Sensitivity, ie gradient ((Δg _steam )/(Δg _air )). The gradient calculation unit 2206 outputs the calculated value of the gradient to the subtraction unit 2209 .

Also, the gradient setting unit 2203 calculates the set value of the gradient corresponding to the set value of the specific m _B and the specific steam flow rate. The gradient setting unit 2203 outputs the setting value of the gradient to the subtracting unit 2209 .

Next, the subtraction unit 2209 calculates the deviation between the set value of the gradient output by the gradient setting unit 2203 and the calculated value of the gradient output by the gradient calculation unit 2206 (the set value of the gradient−the calculated value of the gradient), and outputs the difference to the PI control unit 2204. value. Next, the PI control unit 2204 calculates the correction amount 11 of the air flow rate such that the deviation between the set value of the gradient and the calculated value of the gradient becomes zero by PI control. The PI control unit 2204 outputs the correction amount 11 to the subtraction unit 2208 .

The air flow periodic change generation unit 2202 continuously calculates the periodic increase and decrease of the air flow, and outputs the value to the subtraction unit 2208 . The subtraction unit 2208 subtracts the correction amount 11 calculated by the PI control unit 2204 from the increase/decrease value calculated by the air flow period change generation unit 2202 to calculate a correction amount 12 , and outputs the correction amount 12 to the addition unit 2207 . Next, the addition unit 2207 adds the correction amount 12 to the air flow set value calculated by the basic control unit 2201 to calculate the air flow set value A22-1.

The air flow control unit 22 controls the air blower 4 and the valves 8A to 8E based on the newly calculated air flow setting value A22-1. The air flow control unit 22 repeats the above-mentioned processing. Thereby, the air flow rate at which the steam flow rate becomes constant and the gradient becomes constant is calculated, and the operation of the waste incinerator 100 is controlled by the air flow rate.

For example, if the calculated value of the gradient (the actual gradient) is insufficient relative to the set value of the gradient, the PI control unit 2204 calculates the correction amount 11 for reducing the air flow rate. If the air flow rate is reduced, the steam flow rate will decrease correspondingly, which is less than the set value of the steam flow rate. Then, the garbage supply amount control unit 23 controls the operation of the push rod 2 to increase the garbage supply amount. Since the additionally supplied garbage will dry soon, the amount of fuelized garbage m _B increases, and the steam flow rate is restored. By adjusting the air flow rate accordingly, the lack of gradient is eliminated.

On the contrary, if the actual gradient exceeds the set value of the gradient, the PI control unit 2204 calculates the correction amount 11 for increasing the air flow. If the air flow rate increases, the burning of garbage will be promoted, and the steam flow rate will increase. Then, the garbage supply amount control unit 23 controls the operation of the push rod 2 to reduce the garbage supply amount. If the increase in the amount of fuelized garbage m _B is suppressed, the increase in the vapor flow rate is suppressed, and the excess of the gradient is eliminated by adjusting the air flow rate accordingly. In this way, the steam flow rate and gradient become their respective set values, and the stock m _B and burning speed of fuelized garbage can be controlled to specific values.

As described above, according to the present embodiment, the combustion state of the waste incineration facility 100 can be stabilized by managing the stock m _B of fuelized waste to a preset value and setting the burning speed constant. Control the amount of steam supplied to the power plant to the desired value. Thereby, for example, continuous operation can be performed in a state close to the upper limit of the facility capacity of the waste incineration facility 100, and facility utilization can be improved. Furthermore, the emission of NOx, CO, etc. can be suppressed by stabilizing combustion.

In addition, the setting value of the gradient can be a constant value, and can also be changed according to the steam flow rate. Furthermore, if the nature of the garbage can be detected, it can be changed accordingly. In this embodiment, although the setting value which changed the gradient according to the steam flow rate was demonstrated, it is an example. In addition to the steam flow rate, the setting value of the aforementioned gradient can also be changed corresponding to the value representing the operating state of the waste incinerator, such as the setting value of the power generation output. The same applies to the embodiment described later.

<Second Embodiment> In the first embodiment, the air flow rate was controlled based on the gradient, but the supply amount of garbage can be controlled based on the gradient. (constitute) Fig. 4 is a diagram showing an example of the functional configuration of the control device of the second embodiment. In FIG. 4, the structure of the air flow control part 22A and the waste supply amount control part 23A in the control apparatus 20A of this embodiment is shown. About the data acquisition part 21 and the refuse transfer control part 24, it is the same as what demonstrated using FIG. 1. FIG. The air flow control unit 22A includes a basic control unit 2201 , an air flow periodic change generation unit 2202 , and an addition unit 2207 . Their configuration is the same as that of the first embodiment.

The garbage supply amount control unit 23A includes a feed control unit 2301 , a gradient setting unit 2302 , a PI control unit 2303 , a response amplitude detection unit 2304 , a gradient calculation unit 2305 , an addition unit 2306 , and a subtraction unit 2307 .

The feeding control unit 2301 calculates the supply amount of garbage (garbage request value) at which the measured value of the steam flow rate measured by the steam flow rate sensor 11 becomes a specific set value. For example, if the measured value of the steam flow rate is lower than the set value, the supply amount of garbage is increased, and if the measured value of the steam flow rate exceeds the set value, the garbage request value to decrease the supply amount of garbage is calculated.

The gradient setting unit 2302 calculates the set value of the gradient corresponding to the set value of the steam flow rate. The setting value of the gradient is preset for each value of the steam flow rate, for example.

The PI control unit 2303 calculates the correction amount 21 of the requested value of garbage if the deviation becomes 0 based on the deviation between the set value of the gradient and the calculated value of the gradient (actual gradient).

Similar to the response amplitude detection unit 2205 of the first embodiment, the response amplitude detection unit 2304 detects periodic changes in the amplitude of the steam flow rate based on, for example, Equation (4).

The gradient calculation unit 2305 is similar to the response amplitude detection unit 2205 of the first embodiment, based on the minute time change amount (Δg _steam ) of the amplitude detected by the response amplitude detector unit 2304 and the minute time change amount (Δg steam ) of the air flow rate (Δg steam ). _air ), calculate the gradient (Δg _steam )/(Δg _air ).

(action) In the air flow control unit 22A, the basic control unit 2201 calculates the set value of the air flow, and outputs the value to the addition unit 2207 . The air flow cycle change generation unit 2202 continuously calculates the increase and decrease of the air flow based on the formula (3), and outputs the value to the addition unit 2207 . The adding unit 2207 adds the increase/decrease value of the air flow to the set value of the air flow. The air flow control unit 22A sets the added value as the air flow setting value A22-2 of this embodiment, and controls the operation of the air blower 4 and the opening degrees of the valves 8A to 8E. Thereby, the flow rate of the air supplied to the bellows 5A-5E changes in a sinusoidal wave shape with a predetermined period. The air flow control unit 22A repeats this operation.

The measured value of the steam flow rate measured by the steam flow rate sensor 11 is acquired via the data acquisition unit 21 in the garbage supply amount control unit 23A. The feed control unit 2301 of the garbage supply amount control unit 23A calculates a garbage request value such that the measured value of the steam flow rate becomes the set value of the steam flow rate based on the set value and the measured value of the steam flow rate. The feed control unit 2301 outputs the garbage request value to the addition unit 2306 .

Also, the response amplitude detection unit 2304 calculates the change in the periodic amplitude of the vapor flow rate with respect to the periodic change in the air flow rate, and outputs the information to the gradient calculation unit 2305 . Next, the gradient calculation unit 2305 compares the change of each cycle of the air flow setting value A22-2 with the change of the corresponding steam flow rate of each cycle, and calculates the gradient ((Δg _steam )/ (Δg _air )). The gradient calculation unit 2305 outputs the calculated value of the gradient to the subtraction unit 2307 . Also, the gradient setting unit 2302 calculates the set value of the gradient corresponding to the set value of the vapor flow rate, and outputs the value to the subtracting unit 2307 .

Next, the subtraction unit 2307 calculates the deviation between the set value of the gradient calculated by the gradient setting unit 2302 and the calculated value of the gradient calculated by the gradient calculation unit 2305 (the set value of the gradient−the calculated value of the gradient), and outputs the difference to the PI control unit 2303. value. Next, the PI control unit 2303 calculates the correction amount 21 of the garbage request value such that the deviation between the set value of the gradient and the calculated value of the gradient becomes 0 by PI control. The PI control unit 2303 outputs the correction amount 21 to the addition unit 2306 . Next, the addition unit 2306 adds the correction amount 21 to the garbage request value calculated by the feed control unit 2301 to calculate a garbage request value A23-2.

The waste supply amount control unit 23A calculates the extension length of the push rod 2 based on the newly calculated waste request value A23-2, generates a control signal for extending the push rod 2 by the length, and controls the push rod 2. The garbage supply amount control unit 23A repeats the above-mentioned processing.

In this way, the required value of garbage is calculated if the steam flow rate is constant and the gradient is constant. Also, the value of the stock m _B of fuelized garbage is stable, and the combustion state of the garbage incinerator 100 is stable.

<Third Embodiment> In the first embodiment and the second embodiment, in order to manage the stock m _B of fuelized garbage, the air flow rate is changed by a sine wave with a predetermined period. In the third embodiment, this process can be simplified, and the air flow rate can be changed in a sinusoidal wave or in a fixed cycle. (Structure) Fig. 5 is a diagram showing an example of the functional structure of the control device according to the third embodiment. The structure of the air flow control part 22B in the control apparatus 20B of this embodiment is shown in FIG. About the data acquisition part 21, the waste supply amount control part 23, and the waste transfer control part 24, it is the same as what demonstrated using FIG. 1. FIG. As shown in the figure, the air flow control unit 22B includes: a basic control unit 2201 , an air flow change unit 2210 , a correlation coefficient setting unit 2211 , a PI control unit 2212 , a vapor flow response mode 2213 , a correlation coefficient calculation unit 2214 , and an addition unit 2215 , the subtraction unit 2216 , and the subtraction unit 2217 .

The basic control unit 2201 outputs the set value of the air flow rate similarly to the first embodiment. The air flow changing unit 2210 calculates an increase/decrease value for increasing or decreasing the air flow. The increase and decrease values do not need to be periodic like the first embodiment, or need not be produced in a way that the waveform of the air flow depicts a sine wave, and can be any change within the range that does not cause adverse effects on the operation of the waste incineration equipment 100 quantity.

The correlation coefficient setting unit 2211 sets a specific value determined for the gradient ((Δg _steam )/(Δg _air )) corresponding to the set value of the steam flow rate as the set value of the correlation coefficient. The setting value of the correlation coefficient is preset for each setting value of the steam flow rate. Here, the correlation coefficient is the correlation coefficient between the variation Δg^ _steam of the estimated value of the steam flow obtained by the response mode of the steam flow to the change of the air flow, and the variation Δg _steam of the measured value of the steam flow.

The PI control unit 2212 calculates the air flow rate at which the deviation becomes zero based on the deviation between the set value of the correlation coefficient and the calculated value of the correlation coefficient calculated based on the actual steam flow rate, the actual air flow rate, and the response mode.

The response pattern 2213 is represented by the following equation (5).

Δĝ_steam 於本說明書中記載為Δg^_steam [number 3]

Δĝ _steam is described as Δg^ _steam in this manual

Here, t is an integer representing the sampling time. Δg^ _steam is an estimated value of the deviation between the steam flow rate and the equilibrium point. Δg _air is the deviation of the air flow from the equilibrium point. The equilibrium point is replaced by, for example, a time average. {a1, a2, ...} and {b1, b2, ...} are constants of the response mode and are calculated in advance. The constant of the response mode can be changed corresponding to the set value of the steam flow. z-1 represents the previous 1 sampling moment. Also, Δg^ _steam [t] and Δg _air [t] are defined by deviations from the expected value E as follows, when t is the time. Δg^ _steam [t]=g _steam [t]-E(g _steam ) Δg _air [t]=g _air [t]-E(g _air ) Also, due to the gradient of steam flow to air flow ((Δg _steam ) /(Δg _air )) is proportional to the correlation coefficient between Δg^ _steam and Δg _steam , so the following formula (6) is established. The right side of formula (6) is the correlation coefficient between Δg^ _steam and Δg _steam .

[number 4]

Here, Cov means covariance and Var means variance. That is, when the expected values of x and y are represented by E(x) and E(y) for the vectors x and y of the size that does not conflict, the calculation of the following formula (7) is performed.

[number 5]

The correlation coefficient calculation unit 2214 calculates the correlation coefficient between Δg^ _steam and Δg _steam according to the above-mentioned formula (7).

(action) First, the basic control unit 2201 calculates the set value of the air flow rate, and outputs the value to the addition unit 2215 . The air flow changing unit 2210 calculates the changed value of the air flow, and outputs the value to the subtracting unit 2216 . The subtraction unit 2216 subtracts the correction amount 31 (initial value=0) from the changed value to calculate the correction amount 32 . The subtraction unit 2216 outputs the correction amount 32 to the addition unit 2215 . The adding unit 2215 adds the correction amount 32 to the set value of the air flow. The air flow control unit 22B sets the added value as the air flow set value A22-3 of the present embodiment. The air flow control unit 22B controls the operation of the air blower 4 and the opening degrees of the valves 8A to 8E based on the air flow setting value A22-3.

Next, the response mode 2213 inputs Δg _air [t] based on the air flow set value A22-3, calculates the estimated value of the steam flow Δg^ _steam [t], and outputs the value to the correlation coefficient calculation unit 2214. In addition, the air flow control unit 22B acquires the measured value of the steam flow rate measured by the steam flow sensor 11 via the data acquisition unit 21 . Next, the correlation coefficient calculation unit 2214 calculates the correlation coefficient between Δg _steam [t] and Δg^ _steam [t] according to the formula (7). The correlation coefficient calculation unit 2214 outputs the calculated value of the correlation coefficient to the subtraction unit 2217 . Furthermore, the correlation coefficient setting unit 2211 calculates the set value of the correlation coefficient corresponding to the set value of the vapor flow rate, and outputs the value to the subtraction unit 2217 .

Next, the subtraction unit 2217 calculates the deviation between the set value of the correlation coefficient calculated by the correlation coefficient setting unit 2211 and the calculated value of the correlation coefficient calculated by the correlation coefficient calculation unit 2214 (the set value of the correlation coefficient−the calculated value of the correlation coefficient), and calculates The PI control unit 2212 outputs the calculated deviation. Next, the PI control unit 2212 calculates the correction amount 31 of the air flow rate such that the deviation between the set value of the correlation coefficient and the calculated value of the correlation coefficient becomes zero by PI control. The PI control unit 2212 outputs the correction amount 31 to the subtraction unit 2216 .

The air flow changing unit 2210 calculates the changed value of the air flow, and outputs it to the subtracting unit 2216 . Next, the subtraction unit 2216 subtracts the correction amount 31 calculated by the PI control unit 2212 from the change value calculated by the air flow rate change unit 2210 to calculate the correction amount 32 . The subtraction unit 2216 outputs the correction amount 32 to the addition unit 2215 . Next, the addition unit 2215 adds the correction amount 32 to the air flow set value calculated by the basic control unit 2201 to calculate the air flow set value A22-3.

The air flow control unit 22B controls the air blower 4 and the valves 8A to 8E based on the newly calculated air flow setting value A22-1. The air flow control unit 22B repeats the above-mentioned processing. Thereby, the air flow rate at which the steam flow rate becomes constant and the correlation coefficient becomes constant is calculated, and the operation of the waste incinerator 100 is controlled by the air flow rate.

According to this embodiment, since the stock m _B of fuelized garbage can be managed to a specific value and the combustion state (correlation coefficient) can be controlled to be constant by simpler control than the first embodiment, stable combustion can be achieved. The state makes the waste incinerator 100 operate.

<Fourth Embodiment> In the fourth embodiment, the response mode of the steam flow rate to the air flow rate is determined based on the past value of the air flow rate and the past value of the steam flow rate. Then, according to the determined response pattern, the gradient is calculated. (constitute) Fig. 6 is a diagram showing an example of the functional configuration of a control device according to a fourth embodiment. The structure of the air flow control part 22C in the control apparatus 20C of this embodiment is shown in FIG. About the data acquisition part 21, the waste supply amount control part 23, and the waste transfer control part 24, it is the same as what demonstrated using FIG. 1. FIG.

As shown in the figure, the air flow control unit 22C includes: a basic control unit 2201, an air flow change unit 2210, a gradient setting unit 2203, a PI control unit 2204, a mode determination unit 2218, a gradient calculation unit 2219, a subtraction unit 2220, and an addition unit 2221 , and the subtraction unit 2222. The basic control unit 2201, the gradient setting unit 2203, and the PI control unit 2204 are as described in the first embodiment. The air flow changing part 2210 is as described in the third embodiment. The mode determination unit 2218 determines the coefficients of the mode represented by the following equation (8).

[number 6]

Specifically, the above-mentioned response mode of steam flow to air flow is based on past values of air flow {g_air[t-1], g_air[t-2],...}, and past values of steam flow {g_steam[t-1], g_steam[t-2],・・・}, use the least square method to determine the coefficients {a1, a2,・・・} and {b1, b2,・・・} of the model. For example, the mode determining unit 2218 first forms a matrix of the following formula (9) based on the past values of the air flow rate and the past value of the steam flow rate.

[number 7]

Therefore, the model coefficients {a1, a2, ...} and {b1, b2, ...} can be obtained by the following formula (10) by the least square method.

[number 8]

The gradient calculation unit 2219 calculates the gradient ((Δg _steam )/(Δg _air )) based on the mode coefficient determined by the mode determination unit 2218 and the mode of Equation (9). In addition, T in Formula (9) corresponds to the cycle of changing the air flow rate in the first embodiment, and is set to a value of about 1 minute, for example. T _S is the period of sampling. j is the imaginary unit.

(action) First, the basic control unit 2201 calculates the set value of the air flow rate, and outputs the value to the addition unit 2221 . The air flow changing unit 2210 calculates the changed value of the air flow, and outputs the value to the subtracting unit 2222 . The subtraction unit 2222 subtracts the correction amount 41 (initial value=0) from the changed value to calculate the correction amount 42 . The subtraction unit 2222 outputs the correction amount 42 to the addition unit 2221 . The adding unit 2221 adds the correction amount 42 to the set value of the air flow. 22 C of air flow control parts set the added value as the air flow set value A22-4 of this embodiment. The air flow control unit 22C controls the operation of the air blower 4 and the opening degrees of the valves 8A to 8E based on the air flow setting value A22-4.

Next, the mode determination unit 2218 obtains the information of the steam flow rate and the air flow rate in the past (for example, from X minutes ago to the present) and the current air flow rate, and determines the response mode of the steam flow rate to the air flow rate (Formula (8)). The mode determination unit 2218 determines the response mode by using, for example, equation (9) and equation (10). The mode determination unit 2218 outputs the mode coefficients {a1, a2, ...} and {b1, b2, ...} obtained by determining the response mode to the gradient calculation unit 2219. Next, the gradient calculation unit 2219 calculates the gradient ((Δg _steam )/(Δg _air )) by using the model coefficients and the formula (8). The gradient calculation unit 2219 outputs the calculated value of the gradient to the subtraction unit 2220 .

Also, the gradient setting unit 2203 calculates the set value of the gradient corresponding to a specific m _B and a specific steam flow rate. The gradient setting unit 2203 outputs the setting value of the gradient to the subtraction unit 2220 .

Next, the subtraction unit 2220 calculates the deviation between the set value of the gradient output by the gradient setting unit 2203 and the calculated value of the gradient output by the gradient calculation unit 2219 (the set value of the gradient - the calculated value of the gradient), and outputs the difference to the PI control unit 2204. value. Next, the PI control unit 2204 calculates the correction amount 41 of the air flow rate such that the deviation between the set value of the gradient and the calculated value of the gradient becomes zero by PI control. The PI control unit 2204 outputs the correction amount 41 to the subtraction unit 2222 .

The air flow changing unit 2210 calculates the changed value of the air flow, and outputs it to the subtracting unit 2222 . Next, the subtraction unit 2222 subtracts the correction amount 41 calculated by the PI control unit 2212 from the change value calculated by the air flow rate change unit 2210 to calculate a correction amount 42 . The subtraction unit 2222 outputs the correction amount 42 to the addition unit 2221 . Next, the addition unit 2221 adds the correction amount 42 to the air flow set value calculated by the basic control unit 2201 to calculate the air flow set value A22-4.

The air flow control unit 22C controls the air blower 4 and the valves 8A to 8E based on the newly calculated air flow setting value A22-4. The air flow control unit 22C repeats the above-mentioned processing. Thereby, the air flow rate at which the steam flow rate becomes constant and the correlation coefficient becomes constant is calculated, and the operation of the waste incinerator 100 is controlled by the air flow rate.

According to this embodiment, the same effect as that of the first embodiment can be obtained. Also, since the response mode is determined successively, even when the burning rate of garbage is changed during the day and night, for example, the same control performance as that of the steady operation can be obtained in the transition state.

<Fifth Embodiment> As described so far, according to the first to fifth embodiments, the combustion state of the waste incinerator 100 can be controlled by managing the value of the stock m _B of dry and fuelized waste. stabilization. However, if the refuse is supplied by the reciprocating action of the push rod 2, the supply amount of the refuse becomes intermittent, which becomes a factor of fluctuation of the steam flow rate. As shown in Figure 1, the push rod 2 is located at the lower part of the garbage layer, and pushes out the garbage around it to the feeder 3 when stretched. The stroke of push rod 2 has its limit, when fully extended, can't press out more rubbish. Therefore, after the push rod is fully extended, it retracts once and extends again. During the time when the push rod 2 is pulled back, the supply of refuse is interrupted (ie, the supply of refuse becomes intermittent), affecting the steam flow. The air flow control unit 22D of the fifth embodiment moderates the fluctuation of the steam flow rate caused by the reciprocating operation.

(constitute) Fig. 7 is a diagram showing an example of a functional configuration of a control device according to a fifth embodiment. The structure of the air flow control part 22D in the control apparatus 20D of this embodiment is shown in FIG. About the data acquisition part 21, the waste supply amount control part 23, and the waste transfer control part 24, it is the same as what demonstrated using FIG. 1. FIG. As shown in the figure, the air flow control unit 22D includes the air flow control unit 22 , a correction amount calculation unit 2224 , and a subtraction unit 2225 .

The air flow control unit 22 is the air flow control unit 22 described in the first embodiment. In FIG. 7 , the air flow control unit 22 is described as an example, but any one of the air flow control units 22A to 22C may be used instead of the air flow control unit 22 . Or, it may be the basic control unit 2201 . The correction amount calculation unit 2224 calculates the correction amount of the air flow rate corresponding to the extension speed of the push rod 2 . (1) Here, a numerical pattern P ₁ is prepared in which the input is the feeding speed of the garbage (extension speed (m/s) of the push rod 2 (m/s)) and the variation value of the steam flow rate caused by it is the output. Mode _P1 , for example, can select the input value and output value from the operation data of the garbage incineration equipment 100, and determine it by the least square method. It can also prepare multiple modes corresponding to the operation status of the garbage incineration equipment 100, and use them to match the actual operation status. By. (2) Next, prepare the mode P ₂ in which the set value of the air flow rate is used as the input and the change in the steam flow rate caused by it is set as the output. (3) Then, according to the formula (11), the air flow feedforward compensation mode P ₃ is calculated according to the mode P ₁ and the mode P ₂ . The correction amount calculation unit 2224 calculates the correction amount of the air flow according to the extension speed of the push rod 2 and the mode P ₃ , and corrects the set value of the air flow set by the air flow control unit 22 . P ₃ =P ₂ ^-1・P ₁・・・・(11)

(Operation) First, the air flow control unit 22 calculates the set value A22-1 of the air flow, and outputs the value to the subtraction unit 2225 . Also, the correction amount calculation unit 2224 acquires the extension speed of the push rod 2 from the refuse supply amount control unit 23 . The correction amount calculation unit 2224 inputs the extension speed of the push rod 2 into the pattern P ₃ , obtains the output of the pattern P ₃ , and sets it as the correction amount 51 . The correction amount calculation unit 2224 outputs the correction amount 51 to the subtraction unit 2225 . For example, when the plunger 2 is pulled back, the correction amount 51 becomes a negative value. The subtraction unit 2225 subtracts the correction amount 51 from the set value A22-1 of the air flow rate. The air flow control unit 22D sets the subtracted value as the air flow set value A22-5 of the present embodiment. The air flow control unit 22D controls the operation of the air blower 4 and the opening degrees of the valves 8A to 8E based on the air flow setting value A22-4.

It is known that the time delay from the air flow rate until the steam flow rate changes is half or less of the time delay until the steam flow rate changes due to the supply of refuse. Therefore, with this embodiment, for example, if the air flow rate is feed-forward compensated at the same time as the push rod 2 reverses from extension to retraction, that is, at the same time as the garbage supply suddenly becomes 0, the difference in the steam flow rate can be prevented. Changes in the bud, or can ease the changes in steam flow.

In addition, the fifth embodiment may be combined with any one of the first to fourth embodiments.

<Sixth Embodiment> In a general waste incinerator, for example, when the steam flow rate becomes a set value, the control device outputs an operation command value to the push rod and turns it on. The push rod is extended at a preset extension speed to feed the waste to the furnace. If the push rod is fully extended, the control unit pulls the push rod back. The push rod repeats this action until it is turned off by the commanded operation command value. In this way, garbage is intermittently supplied in a certain pattern. On the other hand, in the present embodiment, the extension length of the push rod is determined correctly for the waste request value required to compensate for the fluctuation of the steam flow rate, and the unevenness in the supply amount of waste is suppressed.

(constitute) Fig. 8 is a diagram showing an example of a functional configuration of a control device according to a sixth embodiment. Fig. 9 is a diagram showing an example of the functional configuration of the previous control device of the sixth embodiment. The difference between Fig. 8 showing this embodiment and Fig. 9 showing the prior art is only the extension control part of the push rod. This embodiment utilizes the push rod extension control unit 2308a. Prior art utilizes push rod extension control 2308 .

FIG. 8 shows the configuration of a waste supply amount control unit 23K in a control device 20K according to the sixth embodiment. The configuration of the air flow control section is any one of the above-mentioned air flow control sections 22 to 22D. About the data acquisition part 21 and the refuse transfer control part 24, it is the same as what demonstrated using FIG. 1. FIG. 23K of refuse supply amount control parts are equipped with the feed control part 2301, the pusher extension control part 2308a, the retraction command part 2309, the speed change part 2312, and the 2nd speed change part 2312a.

FIG. 9 shows the configuration of a waste supply amount control unit 23E in a prior art control device 20E according to a sixth embodiment. The configuration of the air flow control section is any one of the above-mentioned air flow control sections 22 to 22D. About the data acquisition part 21 and the refuse transfer control part 24, it is the same as what demonstrated using FIG. 1. FIG. The garbage supply amount control unit 23E shown in FIG. 9 includes a feed control unit 2301, a push rod extension control unit 2308, a retract command unit 2309, a speed change unit 2312, and a second speed change unit 2312a.

The feed control unit 2301 calculates a waste request value in which the measured value of the steam flow rate becomes the set value of the steam flow rate based on the set value and the measured value of the steam flow rate. The calculated garbage request value is a continuous value. The push rod extension control part 2308a and the push rod extension control part 2308 control the action when the push rod 2 is extended. Regarding the difference of these functions, it will be described later using FIG. 10 and FIG. 11 . The speed changing part 2312 sets the extension speed as the speed determined by the second speed changing part 2312a when the push rod 2 is stretched, and sets the speed of the push rod 2 as the preset retraction speed when the push rod 2 is retracted. The second speed changing part 2312a is based on the stretch command output by the push rod stretch control part 2308 or the push rod stretch control part 2308a. When the stretch command is turned on, the preset stretch speed setting is output as the stretch speed command. When it is OFF, 0 is output as the extension speed command. The retraction instruction part 2309 controls the retraction action of the push rod 2 . For example, when the push rod 2 passes through the end limit switch provided at the position where it passes when it is extended to the maximum during extension, the retraction command is turned on for the push rod 2 . Also, when the push rod 2 passes the origin limit switch located near the fully retracted position (origin) during retraction, the retraction command is turned off for the push rod 2 .

Here, refer to FIG. 10 . Fig. 10 is a diagram for explaining the conventional waste supply amount control. Ideally, the feeding control unit 2301 supplies the garbage according to the calculated garbage request value. However, it is often the case that the operation command for converting the garbage request value into the push rod 2 is fully extended at a constant speed when the signal is turned on, and then fully retracted repeatedly. This state is shown in FIG. 10 . The prior push rod extension control 2308 is shown in FIG. 10( a ). The relationship between the previous garbage request value x and the extension command u of the push rod 2 is shown in Fig. 10(b). As shown in Figure 10(a) and Figure 10(b), when the waste request value x does not reach the connection threshold value, the push rod extension control unit 2308 outputs the connection command as the stretch command u, so that the push rod 2 Stretch at a certain speed, and when the shutdown command value is reached, the shutdown command is output as the stretch command u. If it is fully extended during the output of the on command, the retract command output by the retract command unit 2309 is turned on, and the push rod 2 is retracted. In such an operation mode, an error occurs between the actual amount of garbage supplied and the requested value of garbage.

On the other hand, in the present embodiment shown in FIG. 8, the push rod extension control unit 2308a reduces the aforementioned error by gradually extending the push rod 2 according to the request value of the garbage. For example, if the stretch length for the garbage request value is X, pusher 2 stretches X and stops. Then, when the next garbage request value is issued, the size of the garbage request value is stretched.

(action) First, the feed control unit 2301 obtains the set value of the steam flow rate and the measured value of the steam flow rate, and calculates the garbage request value as if the actual steam flow rate becomes the set value. The feed control unit 2301 outputs the waste request value to the push rod extension control unit 2308 . The feed control unit 2301 calculates the garbage request value at specific time intervals, and outputs the value to the push rod extension control unit 2308 . The push rod extension control unit 2308 calculates the extension command to the push rod 2 . Here, refer to FIG. 11 .

Fig. 11 is a first diagram illustrating the control of the amount of garbage supplied in the sixth embodiment. As shown in FIG. 11 , the push rod extension control unit 2308a includes an integration unit 238a, a subtraction unit 238b, and a command unit 238c. The integrating unit 238a converts the request value (m ³ /s) of the garbage into the extension length of the push rod. The integration unit 238a divides the request value of the garbage by the cross-sectional area A of the putter, and integrates it with respect to time. This value is the conversion value of the extension length of push rod 2. The integrating unit 238a outputs the converted value of the extended length of the push rod 2 to the subtracting unit 238b. The subtraction unit 238b calculates the deviation between the converted value of the extension length of the push rod 2 and the actual extension length of the push rod, and outputs the deviation to the instruction unit 238c. The actual extension length of the push rod is calculated based on the extension command, for example. The instruction unit 238c outputs an extension instruction to the push rod 2 when the deviation exceeds a specified threshold length. This command is received and putter 2 starts to extend. In the extension of the push rod 2, the above-mentioned processing is also repeated. If the push rod 2 is extended, the deflection is reduced. If the deviation does not reach the specific cut-off threshold length, the command unit 238c sets the stretch command to be cut off. Then, the push rod 2 stops at this position. The push rod extension control unit 2308a repeats the same process when acquiring the next garbage request value. Thereby, the push rod 2 is stretched little by little by a length corresponding to the garbage request value.

When the push rod 2 passes through the end limit switch, the retract command part 2309 outputs a retract ON command to the push rod 2 . Push rod 2 is pulled back towards the origin. When the push rod 2 is pulled back to pass the origin limit switch, the retract command part 2309 outputs a retract cut-off command to the push rod 2 . The push rod 2 stops, and starts to stretch again by the control of the push rod extension control part 2308a. Furthermore, after the push rod 2 is fully extended, the push rod 2 must be pulled back. During the retraction period, the demand value of garbage deviates from the actual supply amount. In order to minimize this divergence, the retraction of the push rod 2 is performed at maximum speed.

Fig. 12 shows the state of the stretching operation of the push rod 2 of this embodiment. Fig. 12 is a second diagram illustrating the control of the amount of garbage supplied in the sixth embodiment. The relationship between the garbage request value x and the extension command u of the push rod 2 is shown in FIG. 12( a ). The relationship between the extension command u of FIG. 12(a) and the extension length of the push rod 2 is shown in FIG. 12(b). First, assume putter 2 stops. When the garbage request value is received, in the push rod extension control unit 2308a, the integration unit 238a integrates the garbage request value over time, and the output of the integration unit 238a increases in a ramp. Before long, the deviation between the output of the integrating unit 238a and the extension length of the push rod 2 exceeds the connection threshold length X determined by the command unit 238c, the extension command u becomes ON, and the push rod 2 is extended (Fig. 12(b)). As a result, the aforementioned deviation decreases over time. And, when the aforementioned deviation does not reach the cut-off threshold length determined by the command unit 238c, the extension command u is turned off, and the push rod 2 stops. In this way, the extension length of the push rod 2 at one time can be roughly specified by the value of X. In the previous method, when an ON command is output, the push rod 2 is extended to a certain length, and a large amount of waste is supplied to the combustion chamber 6 at a time, and as a result, it becomes a disturbance to combustion. On the other hand, in this embodiment, it is possible to determine the supply of garbage once by the connection threshold length X determined by the command unit 238c. For example, if the connection critical length X is set to about 1/10 of the maximum extension length of the push rod 2, then the garbage is subdivided into 1/10 of the former and supplied to the furnace. As a result, the impact on combustion can be reduced. disturb.

Thus, according to the present embodiment, since the pusher 2 follows the temporal change of the requested value of the garbage, it is possible to supply the garbage according to the requested value of the garbage compared with the previous method.

<Seventh Embodiment> In the sixth embodiment, the push rod 2 is pulled back at the maximum speed after being fully extended. However, no matter how it is retracted at the maximum speed, the amount of garbage supplied is insufficient during the retraction. Therefore, in this embodiment, a speed-up zone is set in the final stage of stretching, and the stretching speed is increased to compensate for the decrease in the amount of garbage supplied.

(constitute) Fig. 13 is a diagram showing an example of the functional configuration of a control device according to the seventh embodiment. FIG. 13 shows the configuration of a waste supply amount control unit 23F in the control device 20F of this embodiment. The configuration of the air flow control section is any one of the above-mentioned air flow control sections 22 to 22D. About the data acquisition part 21 and the refuse transfer control part 24, it is the same as what demonstrated using FIG. 1. FIG.

As shown in the figure, the garbage supply amount control unit 23F includes a feed control unit 2301 , a retraction command unit 2309 , a speed conversion unit 2310 , a speed conversion position calculation unit 2311 , and a speed change unit 2312 . The feed control unit 2301 and the retract command unit 2309 are the same as those described in the sixth embodiment. The speed conversion unit 2310 converts the garbage request value output by the feed control unit 2301 into the extension speed of the push rod 2 . For example, if the garbage request value is larger, the speed conversion unit 2310 sets the extension speed of the push rod 2 to a higher speed, and if the next garbage request value is smaller, then sets the extension speed of the push rod 2 to a lower speed. The speed conversion unit 2310 can determine the stretching speed based on, for example, a table that determines the relationship between the garbage request value and the stretching speed.

The speed conversion position calculation part 2311 calculates the position where the extension speed of the push rod 2 is switched to the maximum speed, and when the push rod 2 reaches this position, the speed conversion part 2310 is executed in such a way that the extension speed of the push rod 2 is set to the maximum. instruct. For the position of switching speed, for example, if the extension speed is set as the maximum speed of retraction v _max , the average speed of extension is set as v _av , and the stroke of extension is set as L, then the starting position of the speed-up interval (the same as the original The distance between points) L _PLUIS becomes the following formula (12).

[Number 9]

Here, v _max is sufficiently larger than v _av , and L _PLUIS does not become negative.

The speed changing part 2312 sets the extension speed as the speed determined by the speed conversion part 2310 when the push rod 2 is extended, and sets the retraction speed of the push rod 2 as the maximum speed when the push rod 2 is retracted. , to indicate putter 2.

(action) First, the feed control unit 2301 calculates the garbage request value when the measured value of the steam flow rate is close to the set value of the steam flow rate. The feed control unit 2301 outputs the garbage request value to the speed conversion unit 2310 . The feed control unit 2301 calculates the garbage request value at specific time intervals, and outputs the value to the speed conversion unit 2310 . The speed conversion part 2310 determines the extension speed of the push rod 2 .

Furthermore, the speed conversion position calculation unit 2311 calculates the start position L _PLUIS of the speed-up section by using Equation (12), and determines whether the push rod 2 passes through L _PLUIS . If the push rod 2 does not pass L _PLUIS , the speed conversion position calculation unit 2311 outputs a shutdown signal to the speed conversion unit 2310 . When the OFF signal is acquired, the speed conversion unit 2310 outputs the extension speed calculated based on the garbage request value to the speed changing unit 2312 . The speed changing unit 2312 outputs the obtained extension speed to the push rod 2 as a speed command value. The push rod 2 that has received the speed command continues to stretch until it passes L _PLUIS while changing the stretching speed based on the speed command value determined according to the garbage request value.

When the push rod 2 passes through the L _PLUIS , the speed conversion position calculation unit 2311 outputs an ON signal to the speed conversion unit 2310 . When the ON signal is acquired, the speed conversion unit 2310 outputs the maximum speed v _max to the speed changing unit 2312 instead of the extension speed calculated based on the garbage request value. The speed changing unit 2312 outputs the maximum speed v _max to the push rod 2 as a speed command value. The push rod 2 continues to extend at the maximum speed v _max until it passes the end limit switch.

When the push rod 2 passes through the end limit switch, the retract command unit 2309 outputs a retract ON command to the speed change unit 2312 . The speed changing part 2312 pulls back the push rod 2 at the maximum retracting speed -V _max . When the push rod 2 is pulled back to pass the origin limit switch, the retract command part 2309 outputs a retract shut-off command to the speed change part 2312 . The speed changing part 2312 outputs the stretching speed instructed by the speed converting part 2310 to the push rod 2 again, and starts the next stretching action.

According to this embodiment, the push rod 2 is stretched through the position of L _PLUIS , and the time to pull back to the origin can be shortened. Therefore, for example, compared with the situation where L _PLUIS is also extended at a speed based on the value of the garbage request, even if the amount of garbage supplied by push rod 2 is the same between L _PLUIS and the maximum extension position, the amount of garbage supplied at the same time will be Comparing the supply amount, more garbage can be supplied, so the shortage of garbage supply between pulling the push rod back can be eliminated and alleviated. In addition, this embodiment can also be combined with the sixth embodiment.

<Eighth Embodiment> In the seventh embodiment, the extension speed is increased in the final stage of extension of the push rod 2 to offset the decrease in waste supply during the pull-back of the push rod 2 . However, for example, in the case where there is unevenness in the heat of the waste, and occasionally there is a deviation in the heat of the waste, there are cases where the steam flow rate has a positive deviation from the set value. If in such a state, the push rod 2 is pulled back immediately, then the speed-up as the seventh embodiment is not needed. For example, it is known that the steam flow rate exceeds the set value, and furthermore, as the nature of the incinerator, if the supply of garbage is reduced, the steam flow rate decreases. If the push rod is pulled back with such timing, the waste supply becomes 0 during the retraction period, so the steam flow rate is reduced compared to the previous value. Therefore, retraction helps to eliminate excess vapor flow. Thus, if the variation in steam flow is eliminated by reducing the waste supply, it is beneficial to pull the push rod 2 back at this timing.

(constitute) Fig. 14 is a diagram showing an example of the functional configuration of the control device of the eighth embodiment. FIG. 14 shows the configuration of the garbage supply amount control unit 23G in the control device 20G of the present embodiment. The configuration of the air flow control section is any one of the above-mentioned air flow control sections 22 to 22D. About the data acquisition part 21 and the refuse transfer control part 24, it is the same as what demonstrated using FIG. 1. FIG. As shown in the figure, the garbage supply amount control unit 23G includes: a feed control unit 2301 , a retraction instruction unit 2309 , a speed change unit 2312 , a steam flow rate variation calculation unit 2314 , a steam flow rate deviation calculation unit 2315 , and a retraction determination unit 2316 . The feed control unit 2301 and the retract command unit 2309 are the same as those described in the sixth embodiment.

The speed changing unit 2312 is the same as the speed changing unit 2312 of the seventh embodiment.

The steam flow rate variation calculation unit 2314 calculates the steam flow rate variation δG* that occurs when the push rod 2 starts to retract based on the position of the push rod 2 . The steam flow deviation calculation unit 2315 obtains the deviation δG between the set value of the steam flow and the measured value measured by the steam flow sensor 11, and the variation δG* of the steam flow, and calculates the set value of the steam flow after retraction and the actual steam The predicted value of the flow deviation.

The retraction determination unit 2316 determines whether the push rod 2 starts to be pulled back even when it is extended, based on the predicted value of the deviation of the steam flow rate after retraction and the current position of the push rod 2 . For example, the middle point of the extension of the push rod is determined as the minimum extension distance L _min , and after passing this position, when the predicted value of the steam flow rate when pulling back at this point exceeds the preset value δG _min , it is pulled back immediately. Determine the minimum stretching distance L _min in order to press out the garbage reliably. After the push rod 2 is fully retracted, even if it is pushed out by, for example, 1 cm, no waste will be fed. The rubbish, when pressed by the push rod 2, is, first of all, crushed. At the point when there is no further crushing, start extrusion. For this reason, the retraction is prohibited until the push rod 2 reaches the minimum extension distance L _min , and the refuse is reliably fed.

(action) First, the feed control unit 2301 calculates the garbage request value when the measured value of the steam flow rate is close to the set value of the steam flow rate. The feed control unit 2301 outputs the garbage request value to the speed change unit 2312 . The feed control unit 2301 calculates the garbage request value at specific time intervals, and outputs the value to the speed change unit 2312 . The speed changing unit 2312 determines the extension speed of the push rod 2 . The speed change unit 2312 outputs the extension speed calculated based on the garbage request value as a speed command value to the push rod 2 while not receiving the retraction command value. The push rod 2 that has received the speed command continues to stretch while changing the stretching speed based on the speed command value.

Also, the steam flow rate fluctuation calculation unit 2314 calculates the steam flow rate change δG* based on the position of the push rod 2 . For example, a table for determining the relationship between the position of the push rod 2 and the variation δG* of the steam flow rate is prepared in advance, and the steam flow rate variation calculation unit 2314 calculates δG* based on the table and the current position of the push rod 2 . The steam flow rate variation calculation unit 2314 outputs δG* to the steam flow rate deviation calculation unit 2315 .

Next, the steam flow rate deviation calculation unit 2315 predicts the predicted value of the steam flow rate based on, for example, a model in which when δG and δG are input, it outputs a predicted value of the steam flow rate when retraction starts at that position. Then, the steam flow deviation calculating unit 2315 calculates the deviation between the predicted value of the expected steam flow after retraction and the set value of the steam flow. The steam flow rate deviation calculation unit 2315 outputs the calculated deviation of the steam flow rate to the retraction determination unit 2316 . Also, the retraction determination unit 2316 acquires the current position of the push rod 2 . Next, the retraction determination unit 2316 determines whether the retraction of the push rod 2 is started. First, the retraction determination unit 2316 determines whether the deviation (positive value) of the expected vapor flow after retraction exceeds a specific threshold value, and determines whether the position of the push rod 2 exceeds the minimum extension distance L _min . When any of the conditions is not satisfied, the retraction determination unit 2316 determines that the retraction has not started. When the two conditions are satisfied, the retraction determination unit 2316 determines that the retraction is started. Also, the retraction determination unit 2316 determines whether the push rod 2 has passed the end limit switch. When the end point limit switch is passed, the retraction determination unit 2316 determines that the retraction is started. When the retraction determination unit 2316 determines that the retraction has not started, the push rod 2 continues to extend.

When the retraction determination unit 2316 determines that the retraction is started, an ON signal is output to the retraction command unit 2309 . Then, the retract command unit 2309 outputs a retract ON command to the speed change unit 2312 . The speed changing part 2312 pulls back the push rod 2 at the maximum retracting speed -v _max . When the push rod 2 is pulled back to pass the origin limit switch, the retract command part 2309 outputs a retract shut-off command to the speed change part 2312 . Then, the speed conversion unit 2310 outputs the stretching speed based on the garbage request value to the push rod 2 again, and starts the next stretching action.

According to this embodiment, it is possible to prevent the steam flow rate from deviating from the design value by retracting the push rod 2 without controlling the speed-up of the push rod 2 . In addition, this embodiment can also be combined with the sixth embodiment and the seventh embodiment.

<Ninth Embodiment> This embodiment is aimed at avoiding excessive supply of garbage and stabilizing combustion. For example, in an attempt to increase power generation output. In order to increase the output of power generation, as a countermeasure, it is correct to increase the supply of garbage. However, if a large amount of garbage is supplied at once, the drying area 3A will corrode the combustion area 3B and combustion will be hindered, so it is expected to have an opposite effect from the viewpoint of increasing combustion. The supply of garbage must be limited to such an extent that it does not encroach on the combustion zone 3B. In this embodiment, for example, the corrosion of the combustion area 3B is judged by the correlation coefficient between the _O2 concentration of the flue and the garbage supply, and when it is determined that the combustion area 3B is eroded, the supply of garbage is temporarily stopped to realize combustion of stability.

(constitute) Fig. 15 is a diagram showing an example of a mechanism configuration of a control device according to a ninth embodiment. FIG. 15 shows the configuration of the garbage supply amount control unit 23H in the control device 20H of the present embodiment. The configuration of the air flow control section is any one of the above-mentioned air flow control sections 22 to 22D. About the data acquisition part 21 and the refuse transfer control part 24, it is the same as what demonstrated using FIG. 1. FIG.

As shown in the figure, the garbage supply amount control unit 23H includes a garbage supply limiting unit 2320 , an expansion speed limiting unit 2324 , and a speed changing unit 2312 . The garbage supply restriction unit 2320 includes an O ₂ concentration preprocessing filter 2321 , a push rod extension speed preprocessing filter 2322 , a correlation coefficient setting unit 2211 a , and a garbage supply temporary stop determination unit 2323 . For example, the garbage supply amount control unit 23H has: the feed control unit 2301 illustrated in FIG. Output extension speed command. Alternatively, the garbage supply amount control unit 23H includes the push rod extension control unit 2308 described in FIG.

The _O2 concentration preprocessing filter 2321 inputs the measured value measured by the _O2 concentration sensor 14, limits the upper and lower limits, limits the rate of change per unit time, filters for noise removal, etc., and estimates O ₂ True value of concentration. The push rod extension speed pre-processing filter 2322 inputs the measured value or command value of the push rod extension speed, limits the upper and lower limits, limits the rate of change per unit time, filters for noise removal, etc., and estimates garbage supply The true value of quantity. The correlation coefficient setting unit 2211a calculates the correlation coefficient between the estimated value of the O ₂ concentration and the estimated value of the garbage supply amount. The extension speed limiting unit 2324 obtains the extension speed command and the garbage supply restriction signal output from the garbage supply temporary stop determination unit 2323, and changes the extension speed of the push rod 2 based on the garbage supply restriction signal. The speed changing unit 2312 is the same as the speed changing unit 2312 of the seventh embodiment.

The waste supply temporary stop determination unit 2323 determines the temporary stop of the waste supply based on the aforementioned correlation coefficient. In the garbage supply temporary stop determination unit 2323, the set value X _H for temporarily stopping the garbage supply and the set value X _R for restarting the garbage supply are set, and if the aforementioned correlation coefficient exceeds the set value X _H for temporary stop, the garbage supply is temporarily stopped After the signal is turned on, if the above-mentioned correlation coefficient does not reach the set value X _R for restarting, the garbage supply temporary stop signal will be turned off to limit the garbage supply.

The determination result of the waste supply temporary stop determination unit 2323 is transmitted to the extension speed control unit 2324 as a waste supply control signal. The stretching speed limiting part 2324 is located upstream of the speed changing part 2312. When the waste supply limiting signal is off, the stretching speed limiting part 2324, for example, directly transmits the stretching speed signal output by the second speed changing part 2312a to the speed changing part 2312. On the other hand, when the refuse supply limit signal is ON, the extension speed limiter 2324 sends zero to the speed changer 2312 instead of the extension speed signal.

(Operation) Assuming that the garbage incinerator is burning stably, excessive supply of garbage to it is started. Then, the drying area 3A expands, and the burning area 3B is eroded. Since the combustion zone 3B is eroded, a portion of the air hitherto used for combustion is not used for combustion and is discharged directly into the flue 12 . Therefore, the _O2 concentration of the exhaust gas increases. The rise of the O ₂ concentration of the exhaust gas is measured by the O ₂ concentration sensor 14 . Since the measured value of the O ₂ concentration sensor 14 includes noise and measurement errors, the true value of the O ₂ concentration is estimated by the O ₂ concentration preprocessing filter 2321 . O ₂ concentration varies not only due to excessive supply of garbage, but also due to the composition of collected garbage, moisture, garbage transportation, etc., so it is not practical to judge excessive supply of garbage simply based on O ₂ concentration. Therefore, in the change of _O2 concentration, the correlation coefficient of the change of garbage supply is calculated, because as long as the correlation coefficient is close to 1, when the garbage supply increases, the _O2 concentration will also increase, and it will be judged as the supply of garbage for overdose. There are various time delays such as delay in the flow of exhaust gas, delay in measurement by the O ₂ concentration sensor 14, and delay until the supplied garbage spreads to the drying area 3A and combustion area 3B in the change of the O ₂ concentration after the garbage is supplied. The push rod extension speed pre-processing filter 2322 not only removes noise, but also expresses the delay by filtering such as primary delay, and offsets the time offset between the measured value of _O2 concentration and the garbage supply. In the garbage supply temporary stop judgment unit 2323, for example, 0.7 is set as the setting value X _H for temporarily stopping the garbage supply, and 0.3 is set as the setting value X _R for restarting the garbage supply to determine excessive supply of garbage. When it is determined that the garbage is oversupplied, the extension speed limiting unit 2324 instructs the speed changing unit 2312 to be zero as the extension speed to stop the garbage supply. Due to the stop of the garbage supply, the drying area 3A shrinks, so the burning area 3B recovers, so the _O2 concentration returns to the original value. Then, since the correlation coefficient becomes 0 or a negative value, garbage supply is resumed. In the above description, when the refuse supply restriction signal is ON, the extension speed is set to zero. However, it does not necessarily have to be zero. For example, it can be set to about 1/10 of the usual speed.

<Tenth Embodiment> The tenth embodiment is another solution of the sixth embodiment. As described in the sixth embodiment, in a general refuse incinerator, for example, when the steam flow rate becomes lower than the set value, the control device outputs the operation command value to the push rod and turns it on. The push rod is extended at a preset extension speed to feed the waste to the furnace. If the push rod is fully extended, the control unit pulls the push rod back. The push rod repeats this action until it is turned off by the commanded operation command value. In this way, garbage is intermittently supplied in a certain pattern. In the sixth embodiment, for the garbage request value required to compensate for the change in the steam flow rate, the correct extension length of the push rod 2 is determined, and the push rod 2 is extended little by little by restoring the extension length. Suppress uneven supply of garbage. In the tenth embodiment, by adjusting the extension speed of the push rod 2 instead of extending the push rod 2 little by little, the same effect is imparted.

(constitute) Fig. 16 is a diagram showing an example of the functional configuration of the control device according to the tenth embodiment. FIG. 16 shows the configuration of the garbage supply amount control unit 23J in the control device 20J of this embodiment. The configuration of the air flow control section is any one of the above-mentioned air flow control sections 22 to 22D. About the data acquisition part 21 and the refuse transfer control part 24, it is the same as what demonstrated using FIG. 1. FIG.

As shown in the figure, the garbage supply amount control unit 23J includes: a feed control unit 2301, a push rod extension control unit 2308, a retraction instruction unit 2309, an expansion speed adjustment unit 2340, a speed change unit 2312, a second speed change unit 2312a, And the adding unit 2312b. The present embodiment is characterized by the stretching speed adjustment unit 2340, and the rest are the same as those described with reference to FIG. 9 .

The stretching speed adjustment unit 2340 adjusts the stretching speed command of the push rod 2 in response to the stretching speed command, for example, corresponding to the ratio of the time during which the operation command was ON in the past 10 minutes. The extension speed adjustment unit 2340 includes a PI controller 2344 that calculates an extension speed adjustment command based on the difference between the ON ratio output from the ON ratio detection unit 2341 and the ON ratio setting value. The on-ratio detection unit 2341 is provided with: a binarization unit 2342, which outputs 1 when the extension command is on, and outputs 0 when the extension command is off, based on the extension command output by the push rod extension control unit 2308; and a moving average The unit 2343 inputs the value of 0 or 1 output from the binarization unit 2342, and calculates the moving average of the input value, for example, for 10 minutes. The output of the moving average unit 2343 indicates the ratio of the time when the stretch command is turned on, that is, the ratio of the operation time per unit time. The adding unit 2312b adds the stretching speed adjustment command to the preset stretching speed setting value, and inputs it to the second speed changing unit 2312a. The second speed changing unit 2312a outputs the value obtained by adding the stretching speed adjustment command and the preset stretching speed setting value as the stretching speed command when the operation command output by the push rod stretching control unit 2308 is turned on. On the other hand, when the operation command is off, 0 is output as the extension speed command.

(action) The operation of the stretching speed adjustment unit 2340 will be described. In the past, for example, 10 minutes, the ratio of the time that the operation command of the push rod 2 was turned on was attempted to be exactly 1. This is the result of the push rod being in constant motion for the past 10 minutes, and the garbage is supplied uniformly over time. However, since the calorific value per unit mass or per unit volume of garbage is constantly changing, when the operation command is always on, it cannot cope with the situation that the calorific value decreases due to the supply of wet garbage, for example. In such a situation, by increasing the extension speed command of the push rod 2, the waste supply of the push rod per unit time can be increased, and the time for the operation command of the push rod 2 to be turned off can be spared. Or, in the past, for example, 10 minutes, the ratio of the time when the operation command of the push rod is ON is attempted to be 0.1. It indicates that compared with the garbage request value, the garbage supply capacity of the push rod 2 is too large. When the push rod 2 performs an action, it will not supply garbage temporarily. That is, the supply of garbage is not uniform in time. Because in such a state, the amount of rubbish burned in several minutes is supplied to the furnace with one action of the push rod 2, so whenever the push rod moves, it becomes a disturbance for the furnace. Based on the viewpoint of stable combustion, it is effective to balance the combustion and supply of waste. Therefore, as an appropriate on-ratio, for example, 0.8 is determined as the on-ratio set value, and the difference between the on-ratio set value and the on-ratio output from the on-ratio detection unit 2341 is input to the PI controller 2344, for example. , and calculate the extension speed command adjustment command. With the function of PI controller 2344, the on-rate is set to the set value of on-rate.

The operation of the garbage supply amount control unit 23J will be described. Based on the garbage request value from the feed control unit 2301, the push rod extension control unit 2308 outputs a push rod extension command to the extension speed adjustment unit 2340 and the second speed change unit 2312a. The stretching speed adjustment unit 2340 calculates the stretching speed command adjustment command through the above-mentioned processing. The adding unit 2312b adds the stretching speed command adjustment command share from the specific stretching speed setting, and outputs the added stretching speed setting to the second speed changing unit 2312a. The second speed changing unit 2312a outputs the stretching speed setting obtained from the adding unit 2312b as the stretching speed command when the stretching command obtained from the push rod stretching control unit 2308 is on, and outputs 0 when the stretching command is off. Output as an extension speed command. For example, when the closing ratio is insufficient relative to the setting value of the closing ratio, the extension speed of the push rod 2 is reduced, and when the closing ratio exceeds the setting value of the closing ratio, the extension speed of the push rod 2 is increased. Thereby, the supply amount of garbage can be made uniform, and combustion can be stabilized.

＜Eleventh Embodiment＞ In the eleventh embodiment, for example, the extension speed of the push rod 2 is adjusted according to the ratio of the time during which the operation command was ON in the past 10 minutes. In the eleventh embodiment, the unevenness in the amount of garbage supplied is suppressed without changing the extension speed of the push rod.

(constitute) Fig. 17 is a diagram showing an example of a functional configuration of a control device according to an eleventh embodiment. FIG. 17 shows the configuration of the garbage supply amount control unit 23L in the control device 20L of the present embodiment. The configuration of the air flow control section is any one of the above-mentioned air flow control sections 22 to 22D. About the data acquisition part 21 and the refuse transfer control part 24, it is the same as what demonstrated using FIG. 1. FIG.

As shown in the figure, the garbage supply amount control unit 23L includes: a feed control unit 2301, a push rod extension control unit 2308, a retraction instruction unit 2309, an expansion speed adjustment unit 2340, a speed change unit 2312, a second speed change unit 2312a, On-delay timer 2345, and subtraction unit 2312c. The configuration other than the on-delay timer 2345 and the subtraction unit 2312c is the same as that described using FIG. 16 .

The subtraction unit 2312c converts the extension speed adjustment command of the push rod 2 output by the PI controller 2344 into the on-delay timer of the push rod extension command by subtracting the extension speed adjustment command from the specific on-delay timer setting value. timer setting value. The on-delay timer 2345 cuts off the transmission of the extension command of the push rod 2 output by the push rod extension control part 2308 to the second speed change part 2312a until the time specified by the on-delay timer setting value after conversion Until the time specified by the on-delay timer setting value has elapsed, the extension command is transmitted to the second speed changing unit 2312a.

(action) The operation of the garbage supply amount control unit 23L will be described. The push rod extension control unit 2308 outputs the push rod extension command to the extension speed adjustment unit 2340 and the on-delay timer 2345 . The stretching speed adjustment unit 2340 calculates the stretching speed command adjustment command as described with reference to FIG. 16 . The subtraction unit 2312c subtracts the stretching speed command adjustment command share from the specific on-delay timer setting value, and converts the stretching speed adjustment command into the on-delay timer setting value of the stretching command. By this conversion, the on-delay timer set value, for example, becomes larger as the on-ratio exceeds the on-ratio set value. The subtraction unit 2312c outputs the on-delay timer set value to the on-delay timer 2345 . The on-delay timer 2345 waits until the time specified by the on-delay timer setting value passes, and then outputs the extension command obtained from the push rod extension control section 2308 to the second speed changing section 2312a. The second speed changing unit 2312a outputs the preset stretching speed setting as the stretching speed command when the stretching command is on, and outputs 0 as the stretching speed command when the stretching command is off. Through the setting of the on-delay timer, the extension speed of the push rod 2 as the time average value can be adjusted (reduced), so that the turn-on ratio of the push rod 2 is close to the appropriate turn-on ratio. Thereby, without changing the speed itself of the push rod 2, the supply amount of the garbage can be made uniform and the combustion can be stabilized. Furthermore, from the viewpoint of the average speed of one reciprocation until the push rod 2 is extended and retracted, even if this embodiment is applied to the control of the retraction speed, the same effect can be obtained.

In addition, in the sixth embodiment to the eleventh embodiment, the control devices 20K, 20F, 20G, 20H, 20J, and 20L are equipped with any one of the air flow control parts 22 to 22D of the first embodiment to the fourth embodiment, respectively. Those who have been described, but not limited to this. The control devices 20K, 20F, 20G, 20H, 20J, and 20L may have general air flow control units that do not have the function of controlling the air flow based on the sensitivity of the steam flow to the change of the air flow, instead of the air flow control units 22-22D. A general air flow control unit includes, for example, the basic control unit 2201 described with reference to FIG.

Fig. 18 is a diagram showing an example of the hardware configuration of the control device in each embodiment. The computer 900 includes: a CPU 901 , a main memory device 902 , an auxiliary memory device 903 , an input/output interface 904 , and a communication interface 905 . The above-mentioned control devices 20 to 20G are installed in the computer 900 . Moreover, each of the functions described above is stored in the auxiliary memory device 903 in the form of a program. The CPU 901 reads the program from the auxiliary memory device 903 and expands it in the main memory device 902, and executes the above-mentioned processing according to the program. Also, the CPU 901 secures a memory area in the main memory device 902 according to the program. Also, the CPU 901 secures a memory area for storing the data being processed in the auxiliary memory device 903 according to the program.

In addition, the programs for realizing all or part of the functions of the control devices 20 to 20G can be recorded on a computer-readable recording medium, and the programs from each Processing performed by the functional department. The "computer system" mentioned here shall include hardware such as an OS and peripheral devices. In addition, if the "computer system" refers to the case of using the WWW system, it shall include the environment for providing the top page (or the environment for displaying). Also, the "computer-readable recording medium" means removable media such as CD, DVD, and USB, and storage devices such as hard disk drives built into computer systems. Also, when the program is distributed to the computer 900 through the communication line, the computer 900 that has received the distribution can deploy the program in the main memory device 902 . And execute the above processing. In addition, the above-mentioned program may be used to realize a part of the above-mentioned function, and further may be combined with a program already recorded in the computer system to realize the above-mentioned function.

As described above, some embodiments of the present disclosure have been described, but all of these embodiments are presented as examples and are not intended to limit the scope of the invention. Various omissions, substitutions, and changes can be made in these embodiments without departing from the gist of the invention in addition to other various forms. These embodiments and variations thereof are included in the scope and spirit of the present invention, and are included in the inventions described in the claims and their equivalents.

＜Notes＞ The control devices 20 to 20G, control methods, and programs described in each embodiment can be grasped as follows, for example.

(1) The control devices 20 to 20G of the first aspect include: a garbage supply amount control unit 23 that controls the supply of steam to the aforementioned garbage incineration so that the steam flow rate of the steam generated by the garbage incineration facility 100 becomes a specific first set value. The amount of garbage supplied to the furnace (combustion chamber 6) of the equipment; and the air flow control unit 22-22D, which calculates the sensitivity of the aforementioned steam flow rate to the change of the air flow rate of the air supplied to the aforementioned furnace, and becomes a specific second setting The control value of the above-mentioned air flow is normal.

Thereby, the inventory of fuelized garbage can be managed to a preset value, and the burning state of garbage can be stabilized. For example, continuous operation can be performed in a state close to the upper limit of the equipment capacity of the waste incineration equipment 100, and the utilization rate of the equipment can be improved. Furthermore, the emission of NOx, CO, etc. can be suppressed by stabilizing combustion.

(2) The control device 20 of the second aspect is like the control device 20 of (1), wherein the air flow control part 22 makes the waveform of the aforementioned air flow change into a sinusoidal wave. Changes in the supply amount, and analyze the change of the aforementioned steam flow rate for the change, to detect the aforementioned sensitivity. By varying the air flow periodically and analyzing the response, the sensitivity of the vapor flow to changes in air flow can be detected.

(3) The control device 20B of the third aspect is like the control device 20B of (1), wherein the air flow control unit 22B calculates the vapor flow rate based on the response mode of the vapor flow rate to the air flow rate in proportion to the sensitivity. The correlation coefficient between the estimated value of the change in the flow rate and the measured value of the change in the steam flow rate becomes the control value of the specified third set value. The sensitivity of the steam flow to the change of the air flow can be detected without changing the air flow periodically.

(4) The control device 20C of the fourth aspect is the same as the control device 20C of (1), wherein the air flow control unit 22C determines the steam flow rate by using the air flow rate and the steam flow rate selected from the garbage incineration equipment in operation. The response pattern of the flow rate to the air flow rate is based on the determined response pattern and the measured value of the vapor flow rate, and the control value is calculated so that the sensitivity becomes the second set value. The sensitivity of the steam flow to the change of the air flow can be detected by detecting the sensitivity of the steam flow to the change of the air flow by performing the system determination successively.

(5) The control device 20D of the fifth aspect is like the control devices 20, 20B, and 20C of (1) to (4), wherein the air flow control part 22D inputs the third mode to the aforementioned supply mechanism of the aforementioned waste incineration equipment The extrusion speed, calculate the correction amount, and calculate the aforementioned control value corrected by the correction amount. The third mode shows the relationship between the aforementioned extrusion speed calculated based on the first mode and the second mode and the aforementioned air flow rate. The first mode The 1st mode shows the relationship between the extrusion speed of the supply mechanism that presses out and supplies the waste to the furnace (combustion chamber 6) and the change in the steam flow rate, and the second model shows the relationship between the air flow rate and the change in the steam flow rate. relation. Thereby, the variation of the steam flow rate which occurs when the supply mechanism (push rod 2) retracts etc. can be moderated.

(6) The control device 20K of the sixth aspect is like the control devices 20, 20B, 20C, and 20D of (1) to (5), wherein the garbage supply amount control unit 23E calculates the steam flow rate to be the first setting The value of the general garbage request value, and to the supply mechanism that presses out and supplies the aforementioned garbage to the aforementioned furnace (combustion chamber 6), instructs to extrude the length corresponding to the aforementioned garbage request value. Thereby, the deviation between the garbage request value and the actual amount of garbage input becomes small, and the variation of the steam flow rate can be suppressed.

(7) The control device 20F of the seventh aspect is like the control devices 20, 20B, 20C, and 20D of (1) to (5), wherein the garbage supply amount control unit 23F calculates the steam flow rate to be the first setting The value of the general garbage request value, and for the aforementioned garbage supplied to the aforementioned furnace (combustion chamber 6) by extending to a specific first position, when reaching the aforementioned first position, pull back towards the opposite direction of the extending direction The garbage supply mechanism is set at the second position where the garbage supply mechanism starts to speed up at the opposite side of the first position. When the aforementioned supply mechanism reaches the aforementioned second position, the extension speed of the aforementioned supply mechanism is increased. way to control. Thereby, the influence of insufficient input of garbage between the pullback of the supply mechanism (push rod 2) can be alleviated.

(8) The control device 20G of the eighth aspect is like the control devices 20, 20B, 20C, and 20D of (1) to (5), wherein the garbage supply amount control unit 23G calculates the steam flow rate to be the first setting The value of the general garbage request, and for the feeding mechanism of the aforementioned garbage that is pulled back when reaching the aforementioned first position by extending to the specific first position and providing the aforementioned garbage to the aforementioned furnace, at the distance from the aforementioned feeding mechanism When the predicted value of the vapor flow rate exceeds the first set value when the supply mechanism is pulled back from the stretched position, the supply mechanism is pulled back from the stretched position. Thereby, the supply mechanism (push rod 2) can be pulled back without adverse effects caused by insufficient input of garbage. And, the excessive steam flow rate can be reduced by utilizing the insufficient input of garbage during the time when the supply mechanism (push rod 2) is pulled back.

(9) The control device 20H of the ninth aspect is like the control devices 20, 20B, 20C, and 20D of (1) to (5), wherein the garbage supply amount control unit 23H is based on the oxygen generated by the garbage incineration equipment 100 The correlation coefficient between the flow rate and the supply amount of the aforementioned garbage determines whether the aforementioned garbage is oversupplied, and when it is determined that the aforementioned garbage is oversupplied, the supply of the aforementioned garbage is stopped. Thereby, it is possible to prevent combustion from being hindered by supplying the dry waste in the drying area 3A to the combustion area 3B due to an excessive supply of waste, and to stabilize the combustion.

(10) The control device 20J of the tenth aspect is like the control devices 20, 20B, 20C, and 20D of (1) to (5), wherein the garbage supply amount control unit 23J calculates the amount of garbage to be pressed and supplied to the furnace. The time ratio of the supply mechanism (push rod 2) operating per unit time, when the above-mentioned time ratio is insufficient relative to the set value, reduce the extension speed of the above-mentioned supply mechanism (push rod 2), when the above-mentioned time ratio exceeds the set value, make The extension speed of the aforementioned feeding mechanism (push rod 2) increases. Thereby, the time during which the push rod 2 rests is limited, and as a result, garbage is uniformly supplied to the furnace, and combustion can be stabilized.

(11) The control device 20L of the eleventh aspect is the same as the control devices 20, 20B, 20C, and 20D of (1) to (5), wherein the garbage supply amount control unit 23L calculates and supplies the garbage to the furnace The time ratio of the operation of the supply mechanism (push rod 2) per unit time, when the above-mentioned time ratio exceeds the set value, corresponding to the excess amount, the operation of the aforementioned supply mechanism (push rod 2) is delayed. Thereby, the operating time of the push rod 2 per unit time can be averaged, and the garbage can be uniformly supplied to the furnace, thereby stabilizing combustion.

(12) The control device 20A of the twelfth aspect includes a garbage supply amount control unit 23A that calculates the supply amount of garbage supplied to the furnace (combustion chamber 6 ) of the garbage incinerator. The garbage supply amount control unit 23A calculates the first supply amount of the garbage at which the steam flow rate of the steam generated by the garbage incinerator 100 becomes a specific first set value, and calculates the ratio of the steam flow rate to the air flow rate of the air supplied to the furnace. The sensitivity of the change becomes the second supply amount of the garbage at a specific second set value, and the second supply amount is added to the first supply amount to calculate the supply amount.

Thereby, the inventory of fuelized garbage can be managed to a preset value, and the burning state of garbage can be stabilized. For example, continuous operation can be performed in a state close to the upper limit of the equipment capacity of the waste incineration equipment 100, and the utilization rate of the equipment can be improved. Furthermore, the emission of NOx, CO, etc. can be suppressed by stabilizing combustion.

(13) The control device 20K of the thirteenth aspect is provided with a garbage supply amount control unit 23K, and the garbage supply amount control unit 23K controls the steam flow rate of the steam generated by the garbage incineration facility to be a specific first set value to control the supply to the above-mentioned The amount of garbage supplied to the furnace of the garbage incineration facility, and the garbage supply amount control unit 23K calculates the garbage request value so that the steam flow rate becomes the first set value, and presses and supplies the garbage supply mechanism to the furnace , indicating to squeeze out the length corresponding to the aforementioned garbage request value.

(14) The control device 20F of the fourteenth aspect is provided with a garbage supply amount control unit 23F, and the garbage supply amount control unit 23F controls the steam flow rate of the steam generated by the garbage incineration facility to be a specific first set value, so that the amount of steam supplied to the above-mentioned steam is controlled. The garbage supply amount of the furnace of the garbage incinerator, and the garbage supply amount control unit 23F calculates the garbage request value that makes the steam flow rate the first set value, and expands the steam flow rate to the specific first position. The garbage is supplied to the aforementioned furnace, and when it reaches the aforementioned first position, the aforementioned garbage feeding mechanism that is pulled back in the opposite direction of the stretching direction begins to increase when the aforementioned garbage feeding mechanism is set in the opposite direction than the aforementioned first position. The second position of speed is controlled in such a way that the stretching speed of the aforementioned supply mechanism increases when the aforementioned supply mechanism reaches the aforementioned second position.

(15) The control device 20G of the fifteenth aspect is provided with a garbage supply amount control unit 23G, and the garbage supply amount control unit 23G controls the steam flow rate of the steam generated by the garbage incineration facility to be a specific first set value to supply to the above-mentioned The amount of garbage supplied to the furnace of the garbage incinerator, and the garbage supply amount control unit 23G calculates the garbage request value so that the steam flow rate becomes the first set value, and expands to the specified first position. The predicted value of the aforementioned steam flow rate in the case of pulling the aforementioned feeding mechanism back from the extended position of the aforementioned garbage feeding mechanism that is pulled back when reaching the aforementioned first position when the garbage is supplied to the aforementioned furnace exceeds the aforementioned In the case of the first set value, the aforementioned feeding mechanism is pulled back from the aforementioned extended position.

(16) The control device 20H of the sixteenth aspect includes a garbage supply amount control unit 23H, and the garbage supply amount control unit 23H controls the steam flow rate of the steam generated by the garbage incineration facility to be a specific first set value to control the supply to the above-mentioned waste gas. The amount of garbage supplied to the furnace of the garbage incineration facility, and the garbage supply amount control unit 23H determines whether the aforementioned garbage is oversupplied based on the correlation coefficient between the flow rate of oxygen generated by the aforementioned garbage incineration facility and the supply amount of the aforementioned garbage. When oversupply, stop the supply of the aforementioned garbage.

(17) The control device 20J of the seventeenth aspect is provided with a garbage supply amount control unit 23J, and the garbage supply amount control unit 23J controls the steam flow rate of the steam generated by the garbage incineration facility to be a specific first set value to supply to the above-mentioned The amount of garbage supplied to the furnace of the garbage incineration equipment, and the aforementioned garbage supply amount control unit 23J calculates the time ratio of the supply mechanism (push rod 2) that presses and supplies the aforementioned garbage to the aforementioned furnace per unit time. When the aforementioned time ratio is compared with When the set value is insufficient, the stretching speed of the aforementioned supply mechanism is reduced, and when the aforementioned time ratio exceeds the set value, the stretching speed of the aforementioned supply mechanism is increased.

(18) The control device 20L of the eighteenth aspect is provided with a garbage supply amount control unit 23L, and the garbage supply amount control unit 23L controls the steam flow rate of the steam generated by the garbage incineration facility to be a specific first set value, and controls the amount of steam supplied to the aforementioned garbage incinerator. The amount of garbage supplied to the furnace of the garbage incineration equipment, and the aforementioned garbage supply amount control unit 23L calculates the time ratio of the supply mechanism (push rod 2) that presses and supplies the aforementioned garbage to the aforementioned furnace per unit time. When the aforementioned time ratio exceeds When setting the value, corresponding to the excess amount, the operation of the aforementioned supply mechanism (push rod 2) is delayed.

(19) In the control method of the 19th aspect, the amount of garbage supplied to the furnace (combustion chamber 6) of the above-mentioned garbage incinerator is controlled in such a manner that the steam flow rate of the steam generated by the garbage incinerator 100 becomes a specific first set value. , and calculate the control value of the aforementioned air flow rate that makes the sensitivity of the aforementioned steam flow rate to the change of the air flow rate of the air supplied to the aforementioned furnace a specific second set value.

(20) The recording medium of the twentieth aspect has a program recorded thereon, and the program causes the computer to execute the process of controlling the steam flow rate of the steam generated by the garbage incineration facility to be supplied to the above-mentioned garbage incineration facility in such a manner that it becomes a specific first set value. The amount of garbage supplied to the furnace (combustion chamber 6) is calculated, and the sensitivity of the steam flow rate to the change in the air flow rate of the air supplied to the furnace is calculated to be the control value of the aforementioned air flow rate as the second set value. [Industrial availability]

According to the above-mentioned control device, control method, and program-recorded recording medium, the combustion state of garbage can be stabilized.

1: Hopper 2: Push rod 3: Feeder 3A: Drying area 3B: Combustion area 3C: Post-combustion area 4: Air blower 5A～5E: Bellows 6: Combustion chamber 6A: Primary combustion chamber 6B: Secondary combustion chamber 7: Ash outlet 8A～8E: valve 9: boiler 10: pipeline 11: steam flow sensor/correction amount 12: flue/correction amount 13: CO concentration sensor 14: O ₂ concentration sensor 20, 20A, 20B, 20C, 20D, 20E, 20F, 20G, 20H, 20J, 20K, 20L: control device 21: data acquisition unit 22, 22A, 22B, 22C, 22D: air flow control unit 23, 23A, 23E, 23F, 23G , 23H, 23J, 23K, 23L: garbage supply control unit 24: garbage transport control unit 31, 32, 41, 42, 51: correction amount 100: garbage incinerator 238a: integration unit 238b, 2208, 2209, 2216, 2217 , 2220, 2222, 2225, 2307, 2312c: subtraction part 238c: instruction part 310, 320: curve 900: computer 901: CPU 902: main memory device 903: auxiliary memory device 904: input-output interface 905: communication interface 2201: basic control part 2202: air flow period change generation unit 2203, 2302: gradient setting unit 2204, 2212, 2303: PI control unit 2205, 2304: response amplitude detection unit 2206, 2219, 2305: gradient calculation unit 2207, 2215, 2221, 2306, 2312b : Addition unit 2210: Air flow rate change unit 2211, 2211a: Correlation coefficient setting unit 2213: Response mode 2214: Correlation coefficient calculation unit 2218: Mode determination unit 2224: Correction amount calculation unit 2301: Feed control unit 2308, 2308a: Push rod Extension control part 2309: Retraction instruction part 2310: Speed conversion part 2311: Speed conversion position calculation part 2312: Speed change part 2312a: Second speed change part 2314: Steam flow rate variation calculation part 2315: Steam flow rate deviation calculation part 2316: Retraction Back determination part 2320: garbage supply restriction part 2321: O ₂ concentration preprocessing filter 2322: push rod stretching speed preprocessing filter 2323: garbage supply temporary stop judging part 2324: stretching speed limiting part 2340: stretching speed adjustment part 2341: On-ratio detection unit 2342: binarization unit 2343: moving average unit 2344: PI controller 2345: on-delay timer A: air flow/cross-sectional area of push rod A22-1, A22-3, A22-4 ,A22-5,A23-2: Air flow setting value {a1, a2,・・・}, {b1, b2,・・・}: constant of response mode/coefficient of mode/coefficient of mode B: air flow D, E: steam flow rate L _min : minimum extension distance m _B : garbage stock P ₃ : air flow feed-forward compensation mode/mode u: extension command Vmax: maximum retraction speed X: extension length/connection threshold length X _H ,X _R : Set value x: Garbage request value Δg _steam /Δg _air : Gradient δG: Deviation of measured value δG*: Steam flow rate variation

Fig. 1 is a diagram showing an example of main parts of a waste incineration facility in each embodiment. Fig. 2 is a diagram illustrating the control method of the first embodiment. Fig. 3 is a diagram showing an example of the functional configuration of the control device of the first embodiment. Fig. 4 is a diagram showing an example of the functional configuration of the control device of the second embodiment. Fig. 5 is a diagram showing an example of a functional configuration of a control device according to a third embodiment. Fig. 6 is a diagram showing an example of the functional configuration of a control device according to a fourth embodiment. Fig. 7 is a diagram showing an example of a functional configuration of a control device according to a fifth embodiment. Fig. 8 is a diagram showing an example of a functional configuration of a control device according to a sixth embodiment. Fig. 9 is a diagram showing an example of the functional configuration of a prior art control device according to a sixth embodiment. Fig. 10(a) and (b) are diagrams for explaining general waste supply control. Fig. 11 is a first diagram illustrating the control of the amount of garbage supplied in the sixth embodiment. Fig. 12(a) and (b) are the second diagrams illustrating the control of the amount of garbage supplied in the sixth embodiment. Fig. 13 is a diagram showing an example of the functional configuration of a control device according to the seventh embodiment. Fig. 14 is a diagram showing an example of the functional configuration of the control device of the eighth embodiment. Fig. 15 is a diagram showing an example of the functional configuration of a control device according to the ninth embodiment. Fig. 16 is a diagram showing an example of the functional configuration of the control device according to the tenth embodiment. Fig. 17 is a diagram showing an example of a functional configuration of a control device according to an eleventh embodiment. Fig. 18 is a diagram showing an example of the hardware configuration of the control device in each embodiment.

1: Hopper

2: putter

3: feeder

3A: Dry area

3B: Burning area

3C: Post-combustion zone

4: blower

5A~5E: Bellows

6: Combustion chamber

6A: primary combustion chamber

6B: Secondary combustion chamber

7: Ash export

8A~8E: valve

9: Boiler

10: pipeline

11: Steam flow sensor/correction amount

12: flue / correction amount

13: CO concentration sensor

14: O ₂ concentration sensor

20: Control device

21: Data Acquisition Department

22: Air flow control unit

23: Garbage supply volume control department

24: Garbage Transportation Control Department

100: Garbage incineration equipment

Claims (19)

A control device comprising: a garbage supply amount control unit, which controls the supply amount of garbage supplied to the furnace of the garbage incineration facility so that the steam flow rate of the steam generated by the garbage incineration facility becomes a specific first set value; and The air flow control unit calculates a control value of the air flow such that the sensitivity of the steam flow to a change in the air flow of the air supplied to the furnace becomes a specific second set value. The control device according to claim 1, wherein the air flow control unit changes the supply amount of the air flow in such a manner that the waveform represented by the time-dependent change of the air flow becomes a sine wave, and analyzes the vapor flow corresponding to the change. Changes to detect the aforementioned sensitivity. The control device according to claim 1, wherein the air flow control unit calculates the estimated value of the change in the steam flow rate based on the response pattern of the steam flow rate to the air flow rate proportional to the sensitivity, and the difference between the change in the steam flow rate. The correlation coefficient of the measured value becomes the above-mentioned control value like the specified third set value. The control device according to claim 1, wherein the air flow control unit uses the air flow and the steam flow selected from the operating garbage incineration equipment to determine the response mode of the steam flow to the air flow, based on the determined aforesaid The response mode and the measured value of the aforementioned steam flow rate are used to calculate the aforementioned control value that makes the aforementioned sensitivity equal to the aforementioned second set value. The control device according to any one of Claims 1 to 4, wherein the air flow control unit inputs the extrusion speed of the supply mechanism of the aforementioned waste incineration equipment for the third mode, calculates a correction amount, and calculates the value corrected by the correction amount The aforementioned control value, the third mode represents the relationship between the aforementioned extrusion speed and the aforementioned air flow rate calculated based on the first mode and the second mode, and the first mode represents the relationship between the aforementioned supply mechanism that extrudes and supplies the aforementioned waste to the aforementioned furnace The relationship between the extrusion speed and the change in the steam flow rate, the second model shows the relationship between the air flow rate and the change in the steam flow rate. The control device according to claim 1, wherein the garbage supply amount control unit calculates the garbage request value so that the steam flow rate becomes the first set value, and instructs the supply mechanism for pressing and supplying the garbage to the furnace to press out The length corresponding to the aforementioned garbage request value. The control device according to claim 1, wherein the garbage supply amount control unit calculates the garbage request value that makes the steam flow rate become the first set value, and supplies the garbage to the furnace by stretching to a specific first position. , when the aforementioned first position is reached, the aforementioned garbage supply mechanism that is pulled back toward the opposite direction of the stretching direction is set at the second position where the aforementioned garbage supply mechanism starts to speed up at a position closer to the aforementioned first position than the aforementioned first position, When the aforementioned supply mechanism reaches the aforementioned second position, the stretching speed of the aforementioned supply mechanism is controlled to increase. The control device according to claim 1, wherein the garbage supply amount control unit calculates the garbage request value that makes the steam flow rate become the first set value, and supplies the garbage to the furnace by stretching to a specific first position. , The situation where the feeding mechanism of the aforementioned garbage that is pulled back when reaching the aforementioned first position pulls the aforementioned feeding mechanism back from the extended position of the aforementioned feeding mechanism When the predicted value of the aforementioned steam flow rate exceeds the aforementioned first set value, the aforementioned supply mechanism is pulled back from the aforementioned extended position. The control device according to claim 1, wherein the garbage supply control unit determines whether the garbage is oversupplied based on a correlation coefficient between the flow rate of oxygen generated by the garbage incinerator and the supply of the garbage, and when it is determined to be oversupplied , stop the supply of the aforementioned garbage. The control device according to claim 1, wherein the garbage supply amount control unit calculates the time ratio of the supply mechanism that presses out and supplies the garbage to the furnace per unit time, and reduces the supply when the time ratio is insufficient relative to the set value. The stretching speed of the mechanism, when the aforementioned time ratio exceeds the set value, increase the stretching speed of the aforementioned supply mechanism. The control device according to claim 1, wherein the garbage supply control unit calculates the time ratio per unit time of the operation of the feeding mechanism that presses out and supplies the garbage to the furnace, and when the time ratio exceeds the set value, the amount corresponding to the excess is calculated. , to delay the operation of the aforementioned supply mechanism. A control device comprising a garbage supply amount control unit, the garbage supply amount control unit calculates the supply amount of garbage supplied to the furnace of the garbage incineration equipment; and calculates the steam flow rate of the steam generated by the garbage incineration equipment as a specific first setting The first supply amount of the above-mentioned garbage; Calculate the sensitivity of the aforementioned steam flow rate to the change of the air flow rate of the air supplied to the aforementioned furnace, and become the second supply amount of the aforementioned garbage at a specific second set value; The amount is added to the first supply amount to calculate the supply amount. A control device comprising a garbage supply amount control unit, which controls the amount of garbage supplied to the furnace of the garbage incineration facility so that the steam flow rate of the steam generated by the garbage incineration facility becomes a specific first set value; and the aforementioned The refuse supply amount control unit calculates the refuse request value so that the steam flow rate becomes the first set value, and instructs the supply mechanism for extruding and supplying the refuse to the furnace to extrude a length corresponding to the refuse request value. A control device comprising a garbage supply amount control unit, which controls the amount of garbage supplied to the furnace of the garbage incineration facility so that the steam flow rate of the steam generated by the garbage incineration facility becomes a specific first set value; and the aforementioned The garbage supply amount control unit calculates the garbage request value so that the steam flow rate becomes the first set value, and for supplying the garbage to the furnace by stretching to a specific first position, when reaching the first position, The above-mentioned garbage supply mechanism that is pulled back in the opposite direction of the stretching direction is set at the second position where the aforementioned garbage supply mechanism starts to increase in speed compared with the aforementioned first position, and when the aforementioned supply mechanism reaches the aforementioned second position When, control is carried out in such a way that the stretching speed of the aforementioned supply mechanism is increased. A control device comprising a garbage supply amount control unit, which controls the amount of garbage supplied to the furnace of the garbage incineration facility so that the steam flow rate of the steam generated by the garbage incineration facility becomes a specific first set value; and the aforementioned The garbage supply amount control unit calculates the garbage request value so that the steam flow rate becomes the first set value, and supplies the garbage to the aforementioned garbage by stretching to a specific first position. Furnace, when the feed mechanism of the above-mentioned garbage is pulled back when it reaches the above-mentioned first position, the predicted value of the aforementioned steam flow rate in the case where the aforementioned feed mechanism is pulled back from the extended position of the aforementioned feed mechanism exceeds the aforementioned first set value In this case, the aforesaid feeding mechanism is pulled back from the aforesaid extended position. A control device comprising a garbage supply amount control unit, which controls the amount of garbage supplied to the furnace of the garbage incineration facility so that the steam flow rate of the steam generated by the garbage incineration facility becomes a specific first set value; and the aforementioned The garbage supply control unit calculates the time ratio of the feeding mechanism that presses out and supplies the garbage to the furnace and operates per unit time. When the time ratio is insufficient relative to the set value, the extension speed of the feeding mechanism is reduced. When the time ratio exceeds When setting the value, increase the stretching speed of the aforementioned supply mechanism. A control device comprising a garbage supply amount control unit, which controls the amount of garbage supplied to the furnace of the garbage incineration facility so that the steam flow rate of the steam generated by the garbage incineration facility becomes a specific first set value; and the aforementioned The garbage supply amount control unit calculates the time ratio per unit time of operation of the supply mechanism that presses out and supplies the garbage to the furnace, and when the time ratio exceeds the set value, the operation of the supply mechanism is delayed corresponding to the excess amount. A control method, which controls the amount of garbage supplied to the furnace of the above-mentioned garbage incineration equipment so that the steam flow rate of the steam generated by the garbage incineration equipment becomes a specific first set value; and Calculate the control value of the said air flow rate so that the sensitivity of the said steam flow rate to the change of the air flow rate of the air supplied to the said furnace becomes a specific 2nd set value. A recording medium on which a program is recorded, the program causes a computer to execute the following process: controlling the supply of garbage supplied to the furnace of the above-mentioned garbage incineration equipment in such a manner that the steam flow rate of the steam generated by the garbage incineration equipment becomes a specific first set value and calculate the control value of the aforementioned air flow rate that makes the sensitivity of the aforementioned steam flow rate to the change of the air flow rate of the air supplied to the aforementioned furnace a specific second set value.

Images