KR20230172551A - Control device for incinerator equipment - Google Patents

Abstract

The control device of the incinerator facility is a control device of the incinerator facility, which has a furnace body that conveys the incinerated material while burning it, and a feeder that supplies the incinerated material to the furnace body, and includes a receiving port of the furnace body that is connected to the end of the feeder. an image information acquisition unit that periodically acquires image information, an image information recognition unit that recognizes whether the incinerated object in the receiving port is in a state protruding from the furnace body based on the image information, and an image information recognition unit that recognizes whether the incinerated object in the receiving port is in a state of protruding from the furnace body; It is provided with a supply state determination unit that determines that there is a sign that the incinerated material will be excessively supplied to the furnace body when it is continuously recognized that it is in a protruding state with respect to the furnace body.

Description

Control device for incinerator equipment

This disclosure relates to a control device for incinerator equipment.

This application claims priority to Patent Application No. 2021-107370 filed in Japan on June 29, 2021, and uses the content here.

Patent Document 1 discloses the following waste incineration device. That is, in the waste incineration device described in Patent Document 1, the amount of waste actually supplied to the furnace is detected based on the difference image between the image of the waste before falling into the furnace and the image of the waste after falling into the furnace. Additionally, in the waste incineration device described in Patent Document 1, when the current value of the waste supply amount is higher than the predetermined supply amount range, the waste supply speed is reduced to the radical and the waste to the grate is reduced. By changing the operating conditions by issuing instructions to reduce the supply amount, increase the amount of primary air for combustion, and promote combustion of waste, it reduces the amount of waste supplied to the grate and promotes combustion of waste in the grate. , control is performed to reduce the amount of waste on the grate.

Patent Document 1: Japanese Patent Publication No. 2020-128837

However, in the waste incineration device described in Patent Document 1, operating conditions, etc. change based on the current price of the waste supply amount, so there is a delay in controlling, for example, an increase in the amount of combustion air due to a change in the supply amount. There was a task.

The present disclosure was made to solve the above problems, and its purpose is to provide a control device for incinerator facilities that can improve control delays due to changes in the supply amount of incombustible materials such as waste.

In order to solve the above problems, the control device of the incinerator facility according to the present disclosure is a control device of the incinerator facility having a furnace body that conveys the incinerated material while burning it, and a feeder that supplies the incinerated material to the furnace body, An image information acquisition unit connected to the end of the feeder and periodically acquiring image information including the receiving port of the furnace body, and based on the image information, the incinerated object in the receiving port is an image information recognition unit that recognizes whether or not the incinerated object is in a protruding state with respect to the furnace body; and, when it is continuously recognized for a predetermined period of time that the incinerated object is in a protruding state with respect to the furnace body, It is provided with a supply status determination unit that determines that there is a sign of oversupply.

According to the control device of the incinerator facility of the present disclosure, it is possible to improve control delays due to changes in the supply amount of incombustible materials such as waste.

1 is a schematic diagram showing a configuration example of an incinerator facility according to an embodiment of the present disclosure.
Figure 2 is a block diagram showing a configuration example of a control device according to an embodiment of the present disclosure.
3 is a diagram showing an example of an infrared image according to an embodiment of the present disclosure.
Figure 4 is a flowchart showing an example of operation of the control device according to the embodiment of the present disclosure.
5 is a schematic diagram for explaining an operation example of a control device according to an embodiment of the present disclosure.
FIG. 6 is a schematic diagram for explaining an operation example of the control device according to the embodiment of the present disclosure.
7 is a schematic diagram for explaining an operation example of the control device according to the embodiment of the present disclosure.
8 is a schematic diagram for explaining an operation example of the control device according to the embodiment of the present disclosure.
9 is a schematic diagram for explaining an operation example of the control device according to the embodiment of the present disclosure.
Figure 10 is a schematic block diagram showing the configuration of a computer according to an embodiment of the present disclosure.

(Configuration of the control device of the incinerator equipment)

Hereinafter, a control device for an incinerator facility according to an embodiment of the present disclosure will be described with reference to FIGS. 1 to 10. 1 is a schematic diagram showing a configuration example of an incinerator facility according to an embodiment of the present disclosure. Fig. 2 is a block diagram showing a configuration example of a control device according to an embodiment of the present disclosure. FIG. 3 is a diagram showing an example of an infrared image according to an embodiment of the present disclosure. Fig. 4 is a flowchart showing an example of operation of the control device according to the embodiment of the present disclosure. 5 to 9 are schematic diagrams for explaining an operation example of the control device according to the embodiment of the present disclosure. Fig. 10 is a schematic block diagram showing the configuration of a computer according to an embodiment of the present disclosure. In addition, in each drawing, identical or corresponding components are given the same reference numerals and descriptions are omitted as appropriate.

(Configuration of incinerator equipment)

FIG. 1 shows a configuration example of an incinerator facility 100 according to an embodiment of the present disclosure. In the exemplary form shown in FIG. 1, the incinerator facility 100 is a stoker-type waste incinerator that uses municipal waste, industrial waste, or biomass as solid fuel (Fg). Additionally, the incinerator facility 100 is not limited to a stoker-type waste incinerator.

As shown in FIG. 1, the incinerator equipment 100 includes a hopper 102, a feeder portion 104, a combustion chamber 108, an extrusion device 110 (expelling device), and an air supply device 112. It includes a heat recovery boiler 114, a temperature reduction tower 116, a dust collector 118, and a chimney 120. The combustion chamber 108 is an example of a furnace body that conveys the incinerated material according to the present disclosure while burning it. The extrusion device 110 is an example of a feeder that supplies incinerated materials to the furnace body according to the present disclosure.

The feeder portion 104 is a passage extending toward the combustion chamber 108. The feeder portion 104 is configured so that solid fuel Fg, which is a combustible material such as waste (foreign matter) introduced into the hopper 102, is deposited. If the direction in which the solid fuel Fg moves within the incinerator facility 100 is referred to as the moving direction W1, the downstream end 121 (combustion chamber of the feeder section 104) on the downstream side of the moving direction W1 of the feeder section 104 The end (108) side is connected to the receiving port 122 of the combustion chamber 108.

The extrusion device 110 has an extrusion arm 124 for extruding the solid fuel Fg deposited in the feeder portion 104 into the combustion chamber 108 through the receiving port 122. The extrusion arm 124 is configured to be able to move within the feeder unit 104 from the upstream side to the downstream side and from the downstream side to the upstream side in the moving direction W1. That is, the extrusion arm 124 reciprocates within the feeder portion 104 along the extension direction (horizontal direction) of the feeder portion 104.

The combustion chamber 108 includes a grate 126 (stoker) onto which the solid fuel Fg extruded into the combustion chamber 108 through the receiving port 122 falls. This grate 126 corresponds to the bottom of the combustion chamber 108. The grate 126 is configured to move the solid fuel Fg on the grate 126 in a direction away from the receiving port 122 (from the upstream side to the downstream side in the moving direction W1). Additionally, the combustion chamber 108 includes a drying region 128, a combustion region 130, and a post-combustion region 132 that are sequentially arranged from the upstream side to the downstream side in the moving direction W1. The drying area 128 dries the solid fuel Fg by heat within the combustion chamber 108. The combustion region 130 raises the flame 131 to combust the solid fuel (Fg). The post-combustion region 132 completely combusts the burnout that has not been burned in the combustion region 130. The solid fuel (Fg) dried, burned, and post-combusted in the combustion chamber 108 becomes ash 135 and is discharged outside the incinerator facility 100.

The air supply device 112 supplies primary air used for combustion of solid fuel (Fg) and secondary air used to reduce the concentration of unburned gas such as carbon monoxide generated by combustion of solid fuel (Fg). It is configured to supply to the combustion chamber 108. In the exemplary form shown in FIG. 1 , the air supply device 112 includes an air supply pipe 136 and a blower 138 provided in the air supply pipe 136. The air flowing through the air supply pipe 136 is partly supplied as primary air from the grate 126 to the lower part of the combustion chamber 108 through the first flow control valve 140, and the remaining part is secondary air. It is supplied from the side wall of the combustion chamber 108 to the upper part of the combustion chamber 108 through the second flow control valve 142. The air supply device 112 functions as a secondary air supply device that supplies secondary air to the upper part of the combustion chamber 108. Additionally, in the exemplary form shown in FIG. 1, primary air is supplied to each of the drying area 128, combustion area 130, and post-combustion area 132 of the combustion chamber 108.

Each of the heat recovery boiler 114, the temperature reduction tower 116, the dust collector 118, and the chimney 120 is an incinerator facility 100 through which exhaust gas 143 generated by combustion of solid fuel (Fg) flows. ) is provided in the fire passage 144. The exhaust gas 143 flows through the heat recovery boiler 114, the temperature reduction tower 116, the dust collector 118, and the chimney 120 in that order. The heat recovery boiler 114 generates steam from the heat energy of the exhaust gas 143. The temperature reduction tower 116 lowers the temperature of the exhaust gas 143 that has passed through the heat recovery boiler 114. The dust collector 118 collects fly ash contained in the exhaust gas 143 that has passed through the temperature reduction tower 116. The chimney 120 exhausts the exhaust gas 143 that has passed through the dust collector 118 to the outside of the incinerator facility 100. Additionally, steam generated in the heat recovery boiler 114 may be configured to be supplied to a steam turbine (not shown).

(Configuration of the control unit)

The control device 4 applied to the above-described incinerator facility 100 is an incinerator facility having a combustion chamber 108 that conveys the incinerated material while burning it, and an extrusion device 110 that supplies the incinerated material to the combustion chamber 108 ( 100) control device. The control device 4 is a functional configuration comprised of a combination of hardware such as a computer and peripheral devices of the computer, and software such as programs executed by the computer, and includes the following parts. That is, the control device 4 includes an image information acquisition unit 41, an image information recognition unit 42, a supply state determination unit 43, a combustion air quantity control unit 44, and a feeder control unit 45. It is provided with an oversupply detection unit 46, a protrusion amount detection unit 47, a model learning unit 48, and a storage unit 49. Additionally, the storage unit 49 stores a plurality of learned models 491 and a plurality of image information 492.

The image information acquisition unit 41 periodically acquires image information including an image signal indicating the feeder vicinity area, which is the area including the feeder unit 104 and the like captured by the imaging device 2. In addition, in this embodiment, the image information includes an image signal representing a captured image, information representing the shooting date and time of the image signal, and the total stroke length of the extrusion arm 124 at the time of shooting (total extrusion length of the feeder). It may include information indicating . The total stroke length of the extrusion arm 124 is the sum of the lengths by which the extrusion arm 124 is moved from upstream to downstream in the moving direction W1, starting from the point in time when excessive supply of the incinerated material (also called "plunge", etc.) occurs. It's the price. The area near the feeder is, for example, an area including the front surface (Fr) of the solid fuel (Fg) as an area of interest.

Additionally, the imaging device 2 captures an infrared image (thermal image) of the solid fuel Fg deposited in the feeder portion 104 of the incinerator facility 100 before the solid fuel Fg falls into the combustion chamber 108. It is configured to capture images. The infrared image of the solid fuel Fg captured by the imaging device 2 is sent to the control device 4 in real time. In the exemplary form shown in FIG. 1, the imaging device 2 captures an infrared image of the front surface Fr facing the combustion chamber 108 among the surfaces of the solid fuel Fg before falling into the combustion chamber 108. It is provided in the furnace 145 of the combustion chamber 108 located on the downstream side of the moving direction W1 than the post-combustion area 132 of the combustion chamber 108. This imaging device 2 is capable of capturing an infrared image of the front surface Fr of the solid fuel Fg protruding from the receiving port 122 of the combustion chamber 108. Additionally, as long as it is possible to capture an infrared image of the front surface Fr of the solid fuel Fg, the imaging device 2 may be provided in a location other than the nogo 145 of the combustion chamber 108.

Additionally, the imaging device 2 is, for example, an infrared camera and detects infrared rays in a predetermined wavelength range in which there is little radiation from the flame 131. In this case, the range of the predetermined wavelength range is, for example, 2 μm or more and 5 μm or less. In order to further suppress the influence of the flame 131 and capture an infrared image of the front surface (Fr) of the solid fuel (Fg), the range of the predetermined wavelength range is 3.8 μm or more and 4.2 μm or less. Additionally, the target wavelength range for imaging as an infrared image is 0.8 μm to 1000 μm. By passing this wavelength range through a band-pass filter or the like, operation using only a part of the wavelength is possible, if necessary.

Additionally, the imaging device 2 is not limited to an infrared camera as long as it can capture an infrared image of the front surface Fr of the solid fuel Fg beyond the flame 131. In some embodiments, the imaging device 2 includes a visible light camera and a filter device that limits the transmitted wavelength incident on the visible light camera to a predetermined wavelength range.

The image information recognition unit 42 recognizes whether the solid fuel Fg in the area near the feeder is protruding from the combustion chamber 108 based on the image information acquired by the image information acquisition unit 41. In this embodiment, the image information recognition unit 42 uses the learned model 491 to recognize whether the solid fuel Fg in the area near the feeder is in a state protruding from the combustion chamber 108. . In addition, in this embodiment, the image information recognition unit 42 recognizes whether the solid fuel Fg is in a state protruding from the combustion chamber 108 for each divided area in which the area near the feeder is divided into a plurality of areas. . In this case, the learned model 491 is learned for each divided region.

The learned model 491 is, for example, a deep learning model, and is prepared in advance by a teacher ( It is a model learned through learning with a teacher. For example, the learned model 491 inputs at least image information as an explanatory variable and outputs the presence or absence of protrusion of the solid fuel Fg and poor visibility as target variables. The learned model 491, for example, uses a neural network as an element, and the weighting coefficients between neurons in each layer of the neural network are optimized through machine learning so that the required answer is output for a large number of input data. there is. The learned model 491 is composed, for example, of a combination of a program that performs calculations from input to output and weighting coefficients (parameters) used in the calculations. In addition, the learned model 491 is learned for each divided area obtained by dividing an infrared image captured by the imaging device 2 in an arbitrary area, for example.

FIG. 3 shows an example of an infrared image 201 captured by the imaging device 2. The image information recognition unit 42 divides the infrared image 201 into a left area RL, a center area RC, and a right area RR in a direction orthogonal to the movement direction W1 (X1 direction). is divided into three, and each divided area is classified as having protrusion, no protrusion, or poor visibility. In the example shown in FIG. 3, the center area RC is classified as protruding, and the left area RL and right area RR are classified as non-protruding. In addition, poor visibility corresponds to images captured when ash or the like is interposed between the imaging device 2 and the area near the feeder, for example. In addition, although it is divided into three in this embodiment, it is not limited to three divisions. The solid fuel Fg is pushed uniformly by the extrusion device 110, but does not fall uniformly into the furnace because waste becomes entangled. In addition, when falling, the trash inside may become entangled and fall together, and the surface of the trash is not uniform, so multiple attention areas are provided.

The learned model 491 can be a judgment model based on deep learning that classifies each divided region into whether there is a protrusion of garbage, no garbage, or poor visibility based on image information. However, in creating the judgment model, the total stroke length Driving data such as the like may also be used as explanatory variables for learning. Additionally, the image information may be image information 492 during actual driving, or past image information 492 may be used.

When the supply state determination unit 43 continuously recognizes that the solid fuel Fg is protruding from the combustion chamber 108 for a predetermined period of time, the solid fuel Fg will be excessively supplied to the combustion chamber 108. It is judged that there is a warning (of a sharp decline). In addition, when the supply state determination unit 43 continuously recognizes that the solid fuel Fg is in a state protruding with respect to the combustion chamber 108 in at least a plurality of divided areas for a predetermined period of time, the solid fuel Fg It is determined that there is a warning that the combustion chamber 108 will be oversupplied. In addition, the image information recognition unit 42 uses a learned model 491 that determines at least image information as an explanatory variable and the presence or absence of protrusion of the solid fuel Fg and poor visibility as objective variables. Therefore, when recognizing whether or not the solid fuel Fg is in a state protruding from the combustion chamber 108, the supply state determination unit 43 determines as follows. That is, the supply state determination unit 43 continuously recognizes that at least the solid fuel Fg is in a state protruding from the combustion chamber 108 for a predetermined period of time, and the extrusion device 110 continuously recognizes that the solid fuel Fg ) is being pressurized, it is determined that there is a risk that the solid fuel Fg will be excessively supplied to the combustion chamber 108.

For example, in making a plunge prediction decision, the supply state determination unit 43 makes a prediction decision based on whether all of the following conditions are satisfied. (Condition 1) From the image information divided into 3 segments, there is protrusion in 2 or more of the 3 segments. (Condition 2) Occurs continuously for 5 seconds. (Condition 3) Feeder operation is press-fitting. Additionally, the detection time was set to continue for a predetermined period of time (for example, 60 seconds). This detection time is the waiting time after the conditions for the precursor judgment are established until the next precursor judgment is performed when a sudden drop (oversupply) does not actually occur. After the conditions for the precursor judgment are established, if a sharp decline (oversupply) actually occurs, the next precursor judgment can be made immediately. The predetermined time can be adjusted, for example, to match the average pressing time of one time.

In addition, in the present embodiment, the supply state determination unit 43 continuously recognizes that the solid fuel Fg is in a state protruding from the combustion chamber 108 for a predetermined period of time, and further, the stroke of the extrusion device 110 When the probability of occurrence of oversupply based on the total length (total extruded length) is greater than or equal to a predetermined threshold, it is determined that there is a possibility that the solid fuel Fg will be oversupplied to the combustion chamber 108. Figure 5 shows an example of the probability of oversupply occurring based on the total stroke length of the extrusion device 110. Figure 5 shows an example of the probability of occurrence of a plunge with respect to the total stroke length, with the horizontal axis representing the total stroke length and the vertical axis representing the probability of occurrence of a plunge. In the example shown in Figure 5, in general, when the total stroke length is L1, the probability of occurrence is 10%, when the total stroke length is L2, the probability of occurrence is 40%, and when the total stroke length is L3, the probability of occurrence is 70%. , if the total stroke length is L4, the probability of occurrence is 90%. In addition, the solid line indicates a case where a sudden drop occurs during feeder press-in, and the dashed line indicates a case where a sudden drop occurs during feeder retraction or stop. The example (plant) shown in FIG. 5 is an example in which the typical stroke length per stroke is controlled to be approximately between L2 and L3.

In this embodiment, the supply state determination unit 43 determines that even when all conditions of the above-described rolling determination are satisfied, the probability of occurrence of oversupply based on the total stroke length of the extrusion device 110 is set to a predetermined threshold (e.g. For example, if it is less than 70%, it is determined that there is no sign of oversupply. In addition, the probability of oversupply occurrence can be approximated with a quadratic function that uses the total stroke length as a parameter, for example, or can be obtained using a map that determines the correspondence between the total stroke length and the probability of oversupply occurrence. In confirmation with the practical machine of this embodiment, a sudden drop did not necessarily occur after precursor detection. Therefore, as shown in FIG. 5, the probability of occurrence of a plunge with respect to the total stroke length of the feeder is calculated, and this probability of occurrence is also used for the precursor determination, thereby further increasing the precision of the precursor determination.

Additionally, the threshold value for the probability of occurrence of oversupply may be changed, for example, by the supply state determination unit 43 in accordance with the operating situation, for example, every predetermined time during operation. Since the probability of occurrence of a sudden drop changes depending on foreign substances (dryness, shape, hardness, etc.), the threshold value can be changed automatically or manually based on performance values of, for example, detection rate or correct response rate (incorrect response rate). Control for suppressing the generation of carbon monoxide during precursor detection, which will be described later, is performed, for example, by increasing the supply of secondary air before a plunge occurs during precursor detection. In this case, if a plunge actually occurs, incomplete combustion can be prevented and the generation of carbon monoxide can be suppressed by increased supply of oxygen. However, if the plunge does not actually occur, there is a risk that oxygen may become excessive and the generation of nitrogen oxides may increase. Therefore, the threshold value may be changed according to actual driving conditions by balancing the demand for carbon monoxide reduction and the increased risk of nitrogen oxide generation. Here, the information indicating the driving situation is not limited to information indicating the amount of carbon monoxide generated and information indicating the amount of nitrogen oxide generated, and may include information indicating foreign matter, temperature, humidity, etc., for example. In this case, the threshold value for the probability of oversupply occurring is a value that changes based on information about the actual combustion situation of the incinerated material, including at least information indicating the amount of carbon monoxide generated and information indicating the amount of nitrogen oxides generated. . By changing the threshold value in this way, for example, the upper limit for the amount of carbon monoxide generated and the upper limit for the amount of nitrogen oxide generated can be managed with good precision. Figure 6 shows the relationship between the detection rate and the error rate of the rolling judgment when the threshold value is changed in the case of combining rolling judgment based on image recognition and comparison of the overfeed occurrence probability and threshold value based on the total stroke length. represents. The incorrect response rate is the ratio of the number of times a plunge did not occur to the total number of precursory judgments. The detection rate is the ratio of the number of times a plunge occurred to the number of times its occurrence could be predicted. When the threshold value was decreased, the detection rate increased, but the incorrect response rate also increased. Increasing the threshold allowed the error rate to be reduced, but the detection rate also decreased.

The combustion air amount control unit 44 controls the air supply device 112 to change the supply amount of combustion air based on the determination result of the supply state determination unit 43 as a precursor to oversupply. By this control, for example, a rapid increase in carbon monoxide that occurs when a sudden drop occurs can be suppressed. For example, the combustion air amount control unit 44 performs control to increase the supply amount of secondary combustion air when the supply state determination unit 43 determines that there is a sign of oversupply, thereby reducing the oxygen in the furnace. Concentration can be increased. This makes it possible to suppress the rapid increase in CO concentration.

The feeder control unit 45 changes at least one of the operating speed or stroke of the extrusion device 110 based on the determination result of the precursor of overfeeding by the supply state determination unit 43. For example, when the feeder control unit 45 determines that there is a sign of overfeeding by the supply state determination unit 43, the feeder control unit 45 slows down the operating speed of the extrusion device 110 and further controls the stroke (extrusion arm 124). The extrusion device 110 is controlled so that the movement stroke) is shortened. By this control, time is gained (postponed) until the next sudden drop occurs, and even when a sudden drop occurs, fuel supply can be continued because there is no need to stop the acceleration device, making it possible to suppress the decrease in evaporation amount. .

In addition, both control by the combustion air amount control unit 44 and control by the feeder control unit 45 may be performed, or only one of them may be performed. In addition, when it is determined that there is a sign of oversupply, the control by the combustion air amount control unit 44 and the control by the feeder control unit 45 are called control at the time of oversupply.

The oversupply detection unit 46 detects the occurrence of oversupply by monitoring the luminance of the infrared image of the front surface Fr of the solid fuel Fg based on the plurality of infrared images acquired by the image information acquisition unit 41. do. FIG. 7 is a graph showing the luminance of an infrared image of the front surface (Fr) of the solid fuel (Fg) before falling into the combustion chamber 108, where the vertical axis represents luminance and the horizontal axis represents time. t1 and t2 are the times when oversupply actually occurred. As shown in FIG. 7, at t1 and t2 when oversupply actually occurs, the decrease in luminance of the infrared image of the front surface Fr of the solid fuel Fg is significant. For this reason, the occurrence of oversupply can be quickly detected by monitoring the luminance of the infrared image of the front surface Fr of the solid fuel Fg. When the oversupply detection unit 46 detects the occurrence of oversupply, it instructs the extrusion device 110 to stop the operation of the extrusion arm 124 via the feeder control unit 45. When the extrusion device 110 receives instructions from the feeder control unit 45, it stops the operation of the extrusion arm 124. Accordingly, the supply of solid fuel Fg to the combustion chamber 108 is stopped.

In addition, when the oversupply detection unit 46 detects the occurrence of oversupply, the air for combustion is supplied to the combustion chamber 108 from the air supply device 112 (secondary air supply device) through the combustion air quantity control unit 44. Increase the amount of secondary air.

As shown in FIG. 8, the protrusion amount detection unit 47 detects the protrusion length Lr of the solid fuel Fg protruding from the receiving port 122 of the combustion chamber 108 toward the combustion chamber 108. In the exemplary form shown in FIG. 8, the protrusion amount detection unit 47 is located at the most downstream side of the receiving port 122 of the combustion chamber 108 and the front face Fr of the solid fuel Fg in the moving direction W1. The size between the exposed portions Fr1 is detected as the protruding length Lr. For example, the protrusion amount detection unit 47 detects the protrusion length Lr for each divided region based on imaging information from the protrusion amount detection imaging device 28 that can image the solid fuel Fg from above.

The model learning unit 48 performs image processing such as pattern recognition for each divided area on the infrared image acquired by the image information acquisition unit 41, recognizes whether the field of view is poor, and, if the field of view is poor, performs the division. The area is classified as having poor visibility. Additionally, when the infrared image acquired by the image information acquisition unit 41 is not recognized as having poor visibility, the model learning unit 48 determines the protrusion length (Lr) detected by the protrusion amount detection unit 47 for each divided area. Based on this, the partial region is classified as having protrusion or not having protrusion. Then, the model learning unit 48 stores the recognition result as image information 492, and, for example, when a predetermined amount of image information 492 is accumulated, learns using the image information 492. Retrain the completion model 491.

(Example of operation of control device)

Next, with reference to FIG. 4, an operation example of the control device 4 will be described. The processing shown in FIG. 4 is repeatedly executed, for example, at 1 second intervals. When the process shown in FIG. 4 is started, the control device 4 determines whether or not it is being controlled at the time of rolling (S1). When the operation is not under control (S1: NO), the image information acquisition unit 41 acquires image information by photographing the inside of the furnace with the imaging device 2 (infrared camera) (S2). Next, the image information recognition unit 42 mesh-divides the image in the area near the feeder (S3). Next, the image information recognition unit 42 determines the presence or absence of protrusion, or poor visibility for each divided area using a deep learning judgment model (S4). Next, the supply state determination unit 43 performs a plunge-predicting determination (S5).

The supply state determination unit 43 determines that there is a precursor when all of the above-mentioned (condition 1) to (condition 3) are satisfied (S5: Yes), and when any one is not satisfied, it determines that there is no precursor. (S5: No). When it is determined that there is no rolling (S5: Yes), the supply state determination unit 43 determines whether the probability of occurrence of a plunge based on the total stroke length is greater than or equal to a predetermined threshold value (S6). If it is more than the threshold (S6: Yes), the combustion air quantity control unit 44 and the feeder control unit 45 start control at the time of rolling (S7). Next, the control device 4 determines whether or not the end condition for control at the time of rolling is satisfied (S8).

The end condition for control during the change is, for example, when the oversupply detection unit 46 detects that a sudden drop has actually occurred, or when the plunge does not occur after the start of the control during the change and a predetermined period of time (e.g., 60 seconds) is set. ) has elapsed. When the condition for ending the control during the change is established (S8: Yes), the control device 4 terminates the control during the change and transitions to control for the actual plunge, or simply ends the control during the change (S9).

In addition, when control is in progress when turning (S1: Yes), the control device 4 determines whether or not the end condition for control when turning is satisfied (S8). In addition, when control is terminated at the time of prediction (S9), when there is no prediction due to a sudden prediction judgment (S5: No), when it is not above the threshold (S6: No), or when the condition for ending control at the time of prediction is not established. If not (S8: No), the control device 4 ends the processing shown in FIG. 4.

Figure 9 shows an example of an operation pattern when omen detection is established. The T1 time is, for example, 5 seconds, and the T2 time is, for example, 60 seconds. At time t11, the press-in of the feeder starts, and at time t12, conditions 1 and 3 and the threshold value judgment are established. Furthermore, when time T1 has elapsed, a precursor is detected at time t13, and the time until the time t14 when the plunge occurs is TC1. In , control is performed during rolling. In addition, the press-in of the feeder starts at time t11, condition 1 and condition 3 and the threshold value judgment are established at time t22, and when time T1 has elapsed, a precursor is detected at time t23, and the drop occurs until time t25. At time TC2, control is performed on the precursor. Additionally, in this case, at time t24, the feeder is moving backward from the press fit. In addition, the press-in of the feeder starts at time t11, condition 1 and condition 3 and the threshold value judgment are established at time t22, and when time T1 has elapsed, a precursor is detected at time t23, and the drop occurs until time t32. At time TC3, control is performed on the precursor. Additionally, in this case, at time t24, the feeder is moving backward from the press fit. Also, at time t31, the feeder is stopped.

(Action/Effect)

As described above, according to the present embodiment, the delay in control due to changes in the supply amount of incombustible materials such as wastes such as excessive supply can be improved.

(Other embodiments)

As mentioned above, the embodiment of the present disclosure has been described in detail with reference to the drawings, but the specific configuration is not limited to this embodiment, and design changes, etc., within the range of not departing from the gist of the present disclosure are also included.

In addition, in the above embodiment, image recognition processing is performed using the learned model 491, but it is not limited to this, and for example, optical flow is used, or stereoscopic high-order local autocorrelation feature method (CHLAC) is used. You can do either.

In addition, the combustion air quantity control unit 44 proactively opens OFA (Over Fire Air) when the supply status determination unit 43 detects a warning signal to eliminate air shortage and prevent an increase in CO concentration, while also preventing an increase in NOx. As a countermeasure, the damper opening in the post-combustion region 132 may be minimized. In addition, when the feeder control unit 45 detects a precursor among a plummeting target, it may reduce the stalker speed and extend the time until the next occurrence, thereby suppressing the variation in evaporation amount due to continuous plummeting.

<Computer configuration>

Fig. 10 is a schematic block diagram showing the configuration of a computer according to at least one embodiment.

The computer 90 includes a processor 91, main memory 92, storage 93, and an interface 94.

The control device 4 described above is mounted on the computer 90. And the operations of each processing unit described above are stored in the storage 93 in the form of a program. The processor 91 reads the program from the storage 93, expands it into the main memory 92, and executes the above-described processing according to the program. Additionally, the processor 91 secures a storage area corresponding to each of the above-described storage units in the main memory 92 according to the program.

The program may be intended to realize some of the functions to be performed by the computer 90. For example, the program may exert its function by combining it with another program already stored in the storage or by combining it with another program mounted on another device. Additionally, in another embodiment, the computer may be provided with a custom LSI (Large Scale Integrated Circuit) such as a PLD (Programmable Logic Device) in addition to or instead of the above configuration. Examples of PLDs include Programmable Array Logic (PAL), Generic Array Logic (GAL), Complex Programmable Logic Device (CPLD), and Field Programmable Gate Array (FPGA). In this case, part or all of the functions realized by the processor may be realized by the integrated circuit.

Examples of the storage 93 include Hard Disk Drive (HDD), Solid State Drive (SSD), magnetic disk, magneto-optical disk, Compact Disc Read Only Memory (CD-ROM), and Digital Versatile Disc (DVD-ROM). Read Only Memory), semiconductor memory, etc. The storage 93 may be internal media directly connected to the bus of the computer 90, or may be external media connected to the computer 90 through the interface 94 or a communication line. Additionally, when this program is transmitted to the computer 90 via a communication line, the computer 90 that has received the transmission may develop the program into the main memory 92 and execute the above-described processing. In at least one embodiment, storage 93 is a non-transitory, tangible storage medium.

<Bookbook>

The control device 4 of the incinerator facility described in each embodiment is understood as follows, for example.

(1) The control device 4 of the incinerator facility according to the first aspect is a control device of the incinerator facility having a furnace body for conveying the incinerated material while burning it, and a feeder for supplying the incinerated material to the furnace body, An image information acquisition unit 41 that is connected to the end of the feeder and periodically acquires image information including the receiving port 122 of the furnace body, and based on the image information, an image information recognition unit 42 that recognizes whether the object to be incinerated is in a state protruding from the furnace body; It is provided with a supply state determination unit 43 that determines that there is a sign that the incinerated material will be excessively supplied to the furnace body. According to this aspect and each of the following aspects, it is possible to improve control delays due to changes in the supply amount of incombustible materials such as wastes such as oversupply.

(2) The incinerator equipment control device 4 according to the second aspect is the incinerator equipment control device 4 according to the aspect (1) above, wherein the image information acquisition unit 41 includes the receiving port ( 122) and the image information including at least part of the inner wall of the dry area may be acquired.

(3) The incinerator equipment control device 4 according to the third aspect is the incinerator equipment control device 4 according to the aspect (1) or (2) above, wherein the supply state determination unit 43 includes, When it is continuously recognized that the object to be incinerated is in a state of protruding with respect to the furnace body for a predetermined period of time, and the probability of occurrence of oversupply based on the total extrusion length of the feeder is more than a predetermined threshold, the object to be incinerated is It may be determined that there are signs of oversupply of the furnace body.

(4) The incinerator equipment control device 4 according to the fourth aspect is the incinerator equipment control device 4 according to the aspect (3) above, wherein the threshold value includes information indicating the amount of carbon monoxide generated and nitrogen. It may be a value that changes based on information about the actual combustion situation of the incinerated object, including at least information indicating the amount of oxides generated.

(5) The incinerator equipment control device 4 according to the fifth aspect is the incinerator equipment control device 4 according to the aspects (1) to (4) above, wherein the image information recognition unit 42 includes, The receiving port 122 is divided into a plurality of regions, and each divided region recognizes whether or not the incinerated object is in a state of being pushed out from the furnace body, and the supply state determination unit 43 determines at least one of the plurality of regions. In the divided area, when it is continuously recognized that the object to be incinerated protrudes from the furnace body for a predetermined period of time, it may be determined that there is a sign that the object to be incinerated will be excessively supplied to the furnace body.

(6) The incinerator equipment control device 4 according to the sixth aspect is the incinerator equipment control device 4 according to the aspects (1) to (5) above, wherein the image information recognition unit 42 includes, Using at least the image information as an explanatory variable and the presence or absence of protrusion of the incinerated object, and the poor visibility as objective variables, it is determined whether the incinerated object is in a protruding state or not. and the supply state determination unit 43 continuously recognizes that at least the incinerated object is in a state protruding from the furnace body for a predetermined period of time, and the feeder is pressuring the incinerated object, It may be determined that there are signs that the incinerated material will be excessively supplied to the furnace body.

(7) The incinerator equipment control device 4 according to the seventh aspect is the incinerator equipment control device 4 according to the aspects (1) to (6) above, based on the determination result of the precursor of oversupply. It may further include at least one of a combustion air quantity control unit that changes the supply amount of combustion air, or a feeder control unit that changes at least one of the operating speed or stroke of the feeder based on the determination result of the precursor of oversupply. .

According to the control device of the incinerator facility of the present disclosure, it is possible to improve control delays due to changes in the supply amount of incombustible materials such as waste.

100… Incinerator equipment
108… combustion chamber
110… extrusion device
4… controller
41… Image information acquisition department
42… Image information recognition unit
43… Supply status determination unit
44… Combustion air volume control unit
45… feeder control
49… memory
491… Trained model
492… burn information

Claims (7)

A control device for an incinerator facility having a furnace body that conveys the incinerated material while burning it, and a feeder that supplies the incinerated material to the furnace body, comprising:
an image information acquisition unit connected to an end of the feeder and periodically acquiring image information including a receiving port of the furnace body;
an image information recognition unit that recognizes whether the object to be incinerated in the receiving port is in a state protruding from the furnace body based on the image information;
Control of incinerator equipment including a supply state determination unit that determines that there is a warning that the incinerated material will be excessively supplied to the furnace body when it is continuously recognized that the incinerated material protrudes from the furnace body for a predetermined period of time. Device. In claim 1,
The control device of an incinerator facility, wherein the image information acquisition unit acquires the image information including at least a part of the receiving port and the inner wall of the drying area. In claim 1 or claim 2,
The supply state determination unit continuously recognizes that the incinerated object is in a state of protruding from the furnace body for a predetermined period of time, and the probability of occurrence of oversupply based on the total extrusion length of the feeder is greater than or equal to a predetermined threshold. , A control device of an incinerator facility that determines that there are signs that the incinerated material will be oversupplied to the furnace body. In claim 3,
The threshold value is a value that changes based on information about the actual combustion state of the object to be incinerated, including at least information indicating the amount of carbon monoxide generated and information indicating the amount of nitrogen oxide generated. A control device for an incinerator facility. The method according to any one of claims 1 to 4,
The image information recognition unit recognizes whether the object to be incinerated is in a state protruding from the furnace body for each divided region in which the receiving port is divided into a plurality of regions,
When the supply state determination unit continuously recognizes that the incinerated object is in a state of protruding from the furnace body in at least the plurality of divided areas for a predetermined period of time, the incinerated object will be excessively supplied to the furnace body. A control device for incinerator equipment that determines that a warning sign exists. The method according to any one of claims 1 to 5,
The image information recognition unit uses a learned model that requires at least the image information as an explanatory variable and the presence or absence of the protrusion of the incinerated object, and poor visibility as objective variables, to determine whether the incinerated object is protruded. Recognizing whether it is in a state or not,
The supply state determination unit continuously recognizes that at least the incinerated object is in a state of protruding from the furnace body for a predetermined period of time, and further, when the feeder is pressing the incinerated object into the furnace body. A control device for incinerator facilities that determines that there are signs of oversupply. The method according to any one of claims 1 to 6,
A combustion air quantity control unit that changes the supply amount of combustion air based on the determination result of the precursor of oversupply, or a combustion air quantity control unit that changes at least one of the operation speed or stroke of the feeder based on the determination result of the precursor of the oversupply. A control device for an incinerator facility further comprising at least one of the feeder control units.