TW202303044A - Control device for incinerator equipment - Google Patents

Abstract

This control device for incinerator equipment is a control device for incinerator equipment having a furnace body, which transports to-be-incinerated objects while burning same, and a feeder, which supplies the to-be-incinerated objects to the furnace body, the control device comprising: an image information acquisition unit that is connected to an end portion of the feeder and periodically acquires image information including an inlet of the furnace body; an image information recognition unit that recognizes, on the basis of the image information, whether or not the to-be-incinerated objects at the inlet protrude from the furnace body; and a supply state determination unit that determines that there are signs that the supply of the to-be-incinerated objects to the furnace body is excessive when the protrusion of the to-be-incinerated objects from the furnace body is continuously recognized for a predetermined period of time.

Description

Control devices for incinerator equipment

This disclosure relates to a control device for an incinerator plant.

Patent Document 1 discloses a waste incinerator as follows. That is, the waste incineration device described in Patent Document 1 detects the waste actually supplied to the furnace 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. supply of waste. In addition, 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 following control is performed, that is, the waste feeder is issued a waste supply speed command. Decrease the amount of waste supplied to the grate by reducing the amount of waste supplied to the grate, increase the amount of primary air for combustion to promote the combustion of waste, etc. to change the operating conditions, thereby reducing the amount of waste supplied to the grate , and promote the combustion of waste on the grate, so that the amount of waste on the grate is reduced. [Prior Art Literature] [Patent Document]

[Patent Document 1] Japanese Patent Laid-Open No. 2020-128837

[Problem to be solved by the invention]

However, in the waste incinerator described in Patent Document 1, the operating conditions and the like change based on the current value of the waste supply amount, so for example, in the control of increasing the amount of combustion air according to the change in the supply amount, it may cause Delay such subjects.

This disclosure was created to solve the above-mentioned problems, and an object thereof is to provide a control device for an incinerator facility capable of improving control delays in response to changes in the supply of combustibles such as waste. [Technical means to solve the problem]

In order to solve the above-mentioned problems, a control device for an incinerator facility according to the present disclosure includes a furnace body that conveys incinerators while burning them, and a feeder that supplies the incinerators to the furnace body. The incinerator equipment The control device of the present invention comprises: an image information acquisition unit, which periodically acquires image information including the receiving port of the furnace body connected to the end of the aforementioned feeder; an image information identification unit, based on the aforementioned image information identification Whether or not the to-be-incinerated object at the receiving port is protruding from the furnace main body; and when the supply status judging unit continuously recognizes that the incinerated object is protruding from the furnace main body for a predetermined period of time , it is determined that the aforesaid to be incinerated has a sign of excess supply to the aforesaid furnace body. [Effect of Invention]

According to the control device for the incinerator facility of the present disclosure, it is possible to improve the delay of the control according to the change in the supply amount of the incinerator such as waste.

(Structure of the control device of the incinerator facility)

The control device of the incinerator facility according to the embodiment of the present disclosure will be described below with reference to FIGS. 1 to 10 . FIG. 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 the operation of the control device according to the embodiment of the present disclosure. 5 to 9 are model diagrams illustrating an example of the operation 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, the same code|symbol is used for the same or corresponding structure in each figure, and description is abbreviate|omitted suitably.

(Structure of incinerator facilities) 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 refuse incinerator using municipal waste, industrial waste, biomass, etc. as solid fuel Fg. In addition, the incinerator facility 100 is not limited to a grate-type refuse incinerator.

As shown in FIG. 1 , the incinerator apparatus 100 includes a hopper 102, a feeder section 104, a combustion chamber 108, an extruding device 110 (waste feeding device), an air supply device 112, a heat recovery boiler 114, a desuperheating tower 116, Dust collecting device 118, chimney 120. The combustion chamber 108 is an example of the main body of the furnace which conveys the incinerated material while burning it. The extrusion device 110 is an example of a feeder for supplying incinerated materials to the furnace main body in the present disclosure.

The feeder section 104 is a passage extending toward the combustion chamber 108 . The feeder part 104 is comprised so that the solid fuel Fg to be combusted, such as waste (garbage), thrown into the hopper 102, accumulates. If the direction in which the solid fuel Fg moves in the incinerator equipment 100 is set as the moving direction W1, the downstream side end 121 on the downstream side of the moving direction W1 of the feeder part 104 (the combustion chamber 108 side of the feeder part 104 end) is connected to the receiving port 122 of the combustion chamber 108.

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

The combustion chamber 108 includes a grate 126 (grate) for dropping the solid fuel Fg extruded into the combustion chamber 108 through the receiving port 122 . This grate 126 corresponds to the hearth portion of the combustion chamber 108 . The grate 126 is configured to move the solid fuel Fg on the grate 126 gradually away from the receiving port 122 (from the upstream side to the downstream side in the moving direction W1 ). In addition, the combustion chamber 108 includes a drying area 128 , a combustion area 130 , and a post-combustion area 132 arranged in sequence from the upstream side toward the downstream side of the moving direction W1. The drying area 128 dries the solid fuel Fg by the heat in the combustion chamber 108 . The combustion zone 130 ignites the flame 131 to burn the solid fuel Fg. The post-combustion zone 132 completes the combustion of the incomplete combustion debris in the combustion zone 130 . The solid fuel Fg dried, combusted, and post-combusted in the combustion chamber 108 becomes ash 135 and is discharged to the outside of the incinerator facility 100 .

The air supply device 112 is configured to supply primary air used for combustion of the solid fuel Fg and secondary air for reducing the concentration of unburned gas such as carbon monoxide generated by the combustion of the solid fuel Fg 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 soot blower 138 provided on the air supply pipe 136 . Part of the air circulating in the air supply pipe 136 is supplied to the lower part of the combustion chamber 108 from the grate 126 through the first flow regulating valve 140 as primary air, and the rest is regulated as secondary air through the second flow regulating valve 140. The valve 142 is fed to the upper part of the combustion chamber 108 from the side wall of the combustion chamber 108 . The air supply device 112 functions as a secondary air supply device that supplies secondary air to the upper portion of the combustion chamber 108 . In addition, in the exemplary form shown in FIG. 1 , primary air is supplied to each of the drying area 128 , the combustion area 130 , and the post-combustion area 132 of the combustion chamber 108 .

Each of the heat recovery boiler 114, the desuperheating tower 116, the dust collector 118, and the chimney 120 is provided in a flue 144 of the incinerator facility 100, and the flue 144 allows exhaust gas 143 generated by burning the solid fuel Fg to flow. The waste gas 143 circulates in the order of the heat recovery boiler 114 , desuperheating tower 116 , dust collecting device 118 , and chimney 120 . The heat recovery boiler 114 generates steam from the thermal 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 desuperheating tower 116 . The chimney 120 exhausts the exhaust gas 143 passing through the dust collector 118 to the outside of the incinerator facility 100 . In addition, the 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-mentioned incinerator facility 100 is the control of the incinerator facility 100 having a combustion chamber 108 for conveying the incinerated material while burning it, and an extrusion device 110 for supplying the incinerated material to the combustion chamber 108 device. The control device 4 is a functional configuration composed of a combination of a computer, hardware such as peripheral devices of the computer, and software such as a program executed by the computer, and includes the following components. 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 volume control unit 44, a feeder control unit 45, an excess supply detection unit 46, an extension Output detection unit 47 , model training unit 48 , memory unit 49 . In addition, the memory unit 49 stores a plurality of pre-trained models 491 and a plurality of image information 492 .

The image information acquisition unit 41 periodically acquires image information including an image signal indicating an area including the feeder unit 104 and the like photographed by the imaging device 2 , that is, an area near the feeder. In addition, in this embodiment, the image information may also include an image signal representing a photographed image, information representing the photographing date and time of the image signal, and representing the total stroke length of the extrusion arm 124 (total length of the feeder) at the time of photographing. Extrusion length) information, etc. The total stroke length of the extrusion arm 124 is the sum of the lengths of the extrusion arm 124 moving from upstream to downstream in the W1 direction, starting from the point in time when excess supply of incinerated materials (also called "collapse" etc.) occurs. value. The area near the feeder is, for example, an area of interest including the front Fr of the solid fuel Fg.

In addition, the imaging device 2 is configured to capture an infrared image (thermal image) of the solid fuel Fg accumulated on the feeder portion 104 of the incinerator facility 100 before it falls into the combustion chamber 108 . The infrared image of the solid fuel Fg captured by the photographing device 2 will be sent to the control device 4 in real time. In the exemplary form shown in FIG. 1 , the photographing device 2 is installed at the tail end 145 of the combustion chamber 108 on the downstream side of the moving direction W1 than the post-combustion area 132 of the combustion chamber 108, so that the photograph falls before falling into the combustion chamber 108. The infrared image of the front Fr facing the combustion chamber 108 among the surfaces of the solid fuel Fg. This photographing device 2 can photograph an infrared image of the front face Fr of the solid fuel Fg protruding from the receiving port 122 of the combustion chamber 108 . In addition, as long as the infrared image of the front surface Fr of the solid fuel Fg can be captured, the imaging device 2 may be installed other than the tail end 145 of the combustion chamber 108 .

In addition, the imaging device 2 is, for example, an infrared camera, and detects infrared rays in a predetermined wavelength range in which radiation from the flame 131 is small. 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 take an infrared image of the front surface Fr of the solid fuel Fg while suppressing the influence of the flame 131 further, the range of the predetermined wavelength range is 3.8 μm to 4.2 μm. In addition, the target wavelength range for capturing infrared images is 0.8 μm to 1000 μm. By allowing a bandpass filter or the like to pass through this wavelength region, it is also possible to achieve an operation in which only a part of the wavelength is used as necessary.

In addition, 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 through 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 to the visible light camera to a predetermined wavelength range.

The image information identifying unit 42 identifies whether the solid fuel Fg in the vicinity of the feeder is protruding to the combustion chamber 108 based on the image information acquired by the image information acquiring unit 41 . In this embodiment, the image information identifying unit 42 uses the pre-trained model 491 to identify whether the solid fuel Fg in the vicinity of the feeder is protruding from the combustion chamber 108 . In addition, in the present embodiment, the image information recognition unit 42 recognizes whether or not the solid fuel Fg is protruding to the combustion chamber 108 for each divided region obtained by dividing the feeder vicinity region into a plurality of regions. In this case, the pre-trained model 491 is trained for each segmented region.

The pre-training model 491 is, for example, a deep learning model, which is pre-trained by supervised training with at least image information as an explanatory variable and the presence or absence of solid fuel Fg sticking out and poor field of view as target variables. For example, the pre-training model 491 inputs at least image information as an explanatory variable, and outputs whether the solid fuel Fg sticks out and poor vision as target variables. For example, the pre-training model 491 uses a neural network as an element, and optimizes the weighting coefficients between neurons in each layer of the neural network by machine learning, so as to output a obtainable solution for a plurality of input data. The pre-training model 491 is constituted by, for example, a combination of a program performing calculations from input to output and weighting coefficients (parameters) used in the calculation. In addition, the pre-training model 491 is, for example, trained according to each segmented area obtained by segmenting the infrared image captured by the photographing device 2 into arbitrary areas.

FIG. 3 shows an example of an infrared image 201 photographed by the photographing device 2 . The image information identification unit 42 divides the infrared image 201 into three parts by a direction (designated as the X1 direction) orthogonal to the moving direction W1 into a left region RL, a central region RC, and a right region RR, and classifies each divided region into One of protruding presence or poor vision. In the example shown in FIG. 3 , the central region RC is classified as having overhang, and the left region RL and right region RR are classified as not overhanging. In addition, the poor field of vision corresponds to, for example, images captured when dust and the like are interposed between the photographing device 2 and the vicinity of the feeder. In addition, although it is defined as three divisions in this embodiment, it is not limited to three divisions. Although the solid fuel Fg is uniformly pushed by the extruding device 110, the garbage is not uniformly dropped into the furnace because of being entangled. In addition, when falling, the garbage in the depths may also get entangled and fall together, and the surface of the garbage will not be uniform, so multiple attention areas are set.

The pre-training model 491 can be defined as a judgment model based on image information for each segmented area and is classified into garbage protruding or not, and deep learning for poor vision. Data can also be used together as explanatory variables to enable learning. In addition, the image information may be the image information 492 in actual operation, or the image information 492 in the past may be used.

The supply state determination unit 43 determines that the solid fuel Fg is oversupplied (collapsing) to the combustion chamber 108 when it continuously recognizes that the solid fuel Fg protrudes into the combustion chamber 108 for a predetermined period of time. Furthermore, when the supply state determination unit 43 continuously recognizes that the solid fuel Fg protrudes from the combustion chamber 108 in at least a plurality of divided regions for a predetermined time, it determines that there is a sign of an excess supply of the solid fuel Fg to the combustion chamber 108. . In addition, the image information identification unit 42 uses the pre-training model 491 obtained by using at least the image information as an explanatory variable and the presence or absence of sticking out of the solid fuel Fg and poor visibility as target variables to identify whether the solid fuel Fg is an object of combustion. In the state where the chamber 108 is extended, the supply state determination unit 43 determines as follows. That is, when the supply state determination unit 43 continuously recognizes that the solid fuel Fg is protruding to the combustion chamber 108 for at least a predetermined time and the extruding device 110 is pushing the solid fuel Fg, it determines that the solid fuel Fg There is a harbinger of oversupply to the combustion chamber 108 .

For example, in the collapse omen determination, the supply state determination unit 43 performs omen determination based on whether or not all of the following conditions are satisfied. (Condition 1) From the 3-divided image information, there is 2 or more divisions among the 3 divisions. (Condition 2) occurs continuously for 5 seconds. (Condition 3) The feeder is operating as pushing. In addition, the detection time is, for example, set as a continuous predetermined time (for example, 60 seconds). This detection time is the standby time before the next omen judgment is performed when the collapse (excess supply) does not actually occur after the condition of the omen judgment is satisfied. When a collapse (oversupply) actually occurs after the condition of the omen judgment is satisfied, the next omen judgment can be performed immediately. The aforementioned predetermined time can be adjusted in accordance with, for example, one average pushing time.

In addition, in the present embodiment, when the supply state determination unit 43 continuously recognizes that the solid fuel Fg is protruding to the combustion chamber 108 for a predetermined time, and based on the excess of the total stroke length (total extrusion length) of the extrusion device 110 When the supply occurrence probability is equal to or greater than a predetermined threshold value, it is determined that there is a sign that the solid fuel Fg is oversupplied to the combustion chamber 108 . FIG. 5 shows an example of the occurrence probability of oversupply based on the total stroke length of the extrusion device 110 . FIG. 5 shows an example of the probability of occurrence of collapse with respect to the total length of the stroke, with the horizontal axis being the total length of the stroke and the vertical axis being the probability of occurrence of collapse. In the example shown in Figure 5, roughly, when the total length of the stroke is L1, the probability of occurrence is 10%, when the total length of the stroke is L2, the probability of occurrence is 40%, and when the total length of the stroke is L3, the probability of occurrence is 70% %, when the total length of the stroke is L4, the probability of occurrence is 90%. In addition, the solid line shows the case where the feeder collapsed while pushing, and the chain line shows the case where the feeder collapsed while it was retreating or stopped. The example (processing plant) shown in FIG. 5 is an example in which the length of each stroke is generally controlled between L2 and L3.

In the present embodiment, even when all the conditions for the above-mentioned omen judgment are satisfied, the supply state judging unit 43, based on the total stroke length of the extruder 110, is less than a predetermined threshold value (for example, 70%). , it is still judged that there is no sign of excess supply. In addition, the excess supply occurrence probability can be obtained by approximating, for example, a quadratic function with the total stroke length as a parameter, or by using a map that defines a correspondence relationship between the total stroke length and the excess supply occurrence probability. In the confirmation of the actual machine of this embodiment, the collapse may not necessarily occur after the omen is detected. In view of this, as shown in Figure 5, the probability of occurrence of collapse relative to the total stroke length of the feeder is calculated, and this probability is also used in the judgment of the omen, thereby further improving the accuracy of the judgment of the omen.

In addition, the threshold value of the occurrence probability of excess supply may be designed to be changed by the supply state determination unit 43, for example, according to the operation situation during operation, for example, at predetermined intervals. The probability of occurrence of avalanches varies depending on the quality of garbage (dryness, shape, hardness, etc.), so for example, the threshold can be changed automatically or manually based on the actual value of detection rate or correct answer rate (wrong answer rate). The control to suppress the generation of carbon monoxide when an omen is detected, which will be described later, is performed, for example, by increasing the supply of secondary air before a collapse occurs when an omen is detected. In this case, if the collapse actually occurs, incomplete combustion can be prevented by increasing the supply of oxygen, and the generation of carbon monoxide can be suppressed. However, when the collapse does not actually occur, oxygen becomes excessive, which may lead to an increase in the generation of nitrogen oxides. Therefore, it can also be designed so that the threshold value varies according to actual operating conditions by balancing the need for CO reduction against the possibility of increased NOx generation. Here, the information indicating the operating status is not limited to the information indicating the amount of carbon monoxide produced and the information indicating the amount of nitrogen oxide produced, for example, information indicating the quality of garbage, temperature, humidity, etc. may also be included. In this case, the threshold value for the occurrence probability of excess supply can be used based on the information of the actual combustion state of the aforementioned incinerated materials including at least the information indicating the generation amount of carbon monoxide and the information indicating the generation amount of nitrogen oxides. its changing value. By changing the threshold in this way, for example, the upper limit value of the generation amount of carbon monoxide and the upper limit value of the generation amount of nitrogen oxides can be managed with high precision. 6 shows the relationship between the error rate and the detection rate of the omen judgment when the threshold is changed when the omen judgment based on image recognition is combined with the comparison of the oversupply occurrence probability and the threshold value based on the total stroke length. The wrong answer rate is the ratio of the number of times that the collapse did not occur relative to all the times of omen judgments. The detection rate is the ratio of the number of successful omens occurring relative to the number of collapse occurrences. If the threshold is decreased, the detection rate will increase but the error rate will also increase. If the threshold is increased, the wrong answer rate can be reduced, but the detection rate will also be reduced.

The combustion air amount control unit 44 controls the air supply device 112 so that the supply amount of combustion air changes based on the determination result of the oversupply sign by the supply state determination unit 43 . By this control, it is possible to suppress, for example, a sudden increase in carbon monoxide generated when a collapse occurs. The combustion air amount control unit 44 can increase the oxygen concentration in the furnace by controlling to increase the supply amount of the secondary combustion air when, for example, the supply state determination unit 43 determines that there is an oversupply sign. Thereby, rapid increase of CO concentration can be suppressed.

The feeder control unit 45 changes at least one of the operating speed and the stroke of the extrusion device 110 based on the determination result of the oversupply sign by the supply state determination unit 43 . The feeder control unit 45, for example, slows down the operating speed of the extrusion device 110 when it is determined by the supply state determination unit 43 that there is a sign of excess supply, and controls the extrusion device 110 so that the stroke (movement of the extrusion arm 124 stroke) becomes shorter. This control prolongs (delays) the time until the next collapse occurs, and even if the collapse occurs, it is not necessary to stop the waste feeder, so that the fuel supply can be continued and the decrease in evaporation can be suppressed.

In addition, both the control by the combustion air amount control unit 44 and the control by the feeder control unit 45 may be performed, or only one of them may be performed. In addition, the control performed by the combustion air amount control unit 44 and the control performed by the feeder control unit 45 when it is judged that there is a sign of excess supply are referred to as control at the time of sign.

The excess supply detection unit 46 monitors the brightness 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 to detect the occurrence of excess supply. 7 is a graph showing the luminance of the infrared image of the front surface Fr of the solid fuel Fg before falling into the combustion chamber 108 , the vertical axis shows the luminance, and the horizontal axis shows the time. t1 and t2 are the times when excess supply actually occurs. As shown in FIG. 7 , at t1 and t2 when the oversupply actually occurs, the brightness of the infrared image of the front surface Fr of the solid fuel Fg decreases significantly. Therefore, by monitoring the brightness of the infrared image of the front Fr of the solid fuel Fg, the occurrence of excess supply can be detected promptly. The oversupply detection unit 46 instructs the extrusion device 110 to stop the operation of the extrusion arm 124 via the feeder control unit 45 when the occurrence of the oversupply is detected. The extrusion device 110 stops the operation of the extrusion arm 124 upon receiving an instruction from the feeder control unit 45 . Thereby, the supply of the solid fuel Fg to the combustion chamber 108 is stopped.

In addition, when the excess supply detection unit 46 detects the occurrence of the excess supply, the secondary air supplied from the air supply device 112 (secondary air supply device) to the combustion chamber 108 via the combustion air amount control unit 44 The amount of air increases.

The protrusion amount detection part 47 detects the protrusion length Lr of the solid fuel Fg protruded toward the combustion chamber 108 from the receiving port 122 of the combustion chamber 108, as shown in FIG. In the exemplary form shown in FIG. 8 , the protrusion amount detecting portion 47 detects the size between the receiving port 122 of the combustion chamber 108 and the portion Fr1 located on the most downstream side among the front face Fr of the solid fuel Fg in the moving direction W1 Come as the overhang length Lr. The overhang amount detection unit 47 detects the overhang length Lr for each divided area based on imaging information of the overhang amount detection imaging device 28 capable of photographing the solid fuel Fg from above, for example.

The model training unit 48 performs image processing such as pattern recognition on each segmented area of the infrared image acquired by the image information acquiring unit 41 to identify whether the visual field is poor, and classifies the segmented area into Poor vision. In addition, when the model training unit 48 does not recognize the infrared image acquired by the image information acquiring unit 41 as having a bad field of view, the extension length Lr detected by the extension amount detecting unit 47 is calculated for each segmented area. The partial area is classified as having or not sticking out. Then, the model training unit 48 saves the recognition result as image information 492 , and for example, when a predetermined amount of image information 492 has been accumulated, uses the image information 492 to train the pre-training model 491 again.

(Operation example of the controller) Next, an example of the operation of the control device 4 will be described with reference to FIG. 4 . The processing shown in FIG. 4 is repeatedly executed at intervals of 1 second, for example. Once the process shown in FIG. 4 is started, the control device 4 judges whether or not the control is in progress at the time of an omen (S1). When it is not an omen and the control is in progress (S1: NO), the image information acquisition part 41 acquires image information by photographing the inside of the oven with the imaging device 2 (infrared camera) (S2). Next, the image information identification unit 42 divides the image of the vicinity of the feeder into meshes ( S3 ). Next, the image information recognition unit 42 judges whether there is protrusion or a poor field of view according to each segmented area by means of a deep learning judgment model ( S4 ). Next, the supply state determination unit 43 performs a collapse sign determination ( S5 ).

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

The termination condition of the premonitory control is, for example, when the excess supply detection unit 46 detects that a collapse has actually occurred, or when a predetermined continuation time (for example, 60 seconds) has elapsed since the premonitory control started without collapse. When the end condition of the omen control is satisfied (S8: Yes), the control device 4 terminates the omen control to switch to the actual collapse control, or simply ends the omen control (S9).

On the other hand, when the sign control is in progress (S1: Yes), the control device 4 determines whether or not the end condition of the sign control is satisfied (S8). In addition, when the control at the time of the sign is ended (S9), when there is no sign in the judgment of the sign of the collapse (S5: No), when it is not more than the threshold (S6: No), or the end of the control at the time of the sign When the condition is not satisfied (S8: No), the control device 4 ends the processing shown in FIG. 4 .

FIG. 9 shows an example of an operation pattern when the premonition is detected. The T1 time is, for example, 5 seconds, and the T2 time is, for example, 60 seconds. The push of the feeder starts at time t11, and at time t12, condition 1 and condition 3 and the threshold are judged to be satisfied, and after T1 time, the omen is detected at time t13, and the omen is performed at time TC1 before the time t14 when the collapse occurs control. In addition, the push of the feeder starts at time t11, and at time t22, condition 1 and condition 3 are determined to be satisfied with the threshold value, and after T1 time, the omen is detected at time t23, and the collapse is carried out at time TC2 before the time t25 when the collapse occurs. Control when omen. In addition, in this case, at time t24, the feeder is changing from pushing to retreating. In addition, the push of the feeder starts at time t11, and at time t22, condition 1 and condition 3 are determined to be satisfied with the threshold value, and after T1 time, the omen is detected at time t23, and the collapse is carried out at time TC3 before the time t32 when the collapse occurs. Control when omen. In addition, in this case, at time t24, the feeder is changing from pushing to retreating. Furthermore, the feeder is stopped at time t31.

(Effect) As described above, according to the present embodiment, it is possible to improve the delay in control according to the change in the supply amount of combustibles such as waste such as oversupply.

(other embodiments) The embodiment of the present disclosure has been described above with reference to the drawings, but the specific configuration is not limited to this embodiment, and design changes and the like within the scope not departing from the gist of the present disclosure are also included. In addition, in the above-mentioned embodiment, it is stipulated that the pre-trained model 491 is used for image recognition processing, but it is not limited thereto. ; cubic higher-order local autocorrelation). In addition, the combustion air volume control unit 44 can also be designed so that once the supply state determination unit 43 detects a sign, it will first open OFA (Over Fire Air; overfired air) to eliminate the lack of air to prevent the CO concentration from increasing. On the one hand, the damper opening of the post-combustion zone 132 is set to a minimum in response to the increase in NOx. In addition, the feeder control unit 45 can also be designed to reduce the grate speed and delay the time before the next occurrence when an omen is detected in the collapsed object, thereby suppressing the increase in the amount of evaporation caused by continuous collapses. change.

〈Computer configuration〉 Fig. 10 is a schematic block diagram showing the configuration of a computer according to at least one embodiment. The computer 90 has a processor 91 , a main memory 92 , a storage 93 and an interface 94 . The above-mentioned control device 4 is built in the computer 90 . In addition, the operations of the processing units described above are stored in the memory 93 in the form of programs. The processor 91 reads a program from the memory 93 and loads it into the main memory 92, and executes the above-mentioned processing according to the program. In addition, the processor 91 secures memory areas corresponding to the above-mentioned respective memory units in the main memory 92 in accordance with the program.

The program can also be used to realize a part of the functions of the computer 90 . For example, the program can also function by combining with other programs stored in the memory, or by combining with other programs built in other devices. In addition, in other embodiments, the computer may also be equipped with a customized LSI (Large Scale Integrated Circuit; large scale integrated circuit) such as a PLD (Programmable Logic Device; Programmable Logic Device) in addition to or instead of the above configuration. As an example of PLD, PAL (Programmable Array Logic; programmable logic array), GAL (Generic Array Logic; belongs to array logic), CPLD (Complex Programmable Logic Device; composite programmable logic device), FPGA (Field Programmable Gate Array; field programmable gate array), etc. In this case, part or all of the functions realized by the processor may be realized by the integrated circuit.

As an example of the storage device 93, HDD (Hard Disk Drive; hard disk drive), SSD (Solid State Drive; solid state drive), magnetic disk, optical magnetic disk, CD-ROM (Compact Disc Read Only Memory; Disc Read Only Memory), DVD-ROM (Digital Versatile Disc Read Only Memory; Digital Versatile Disc Read Only Memory), semiconductor memory, etc. The storage 93 can be an internal medium directly connected to the bus of the computer 90, or an external medium connected to the computer 90 via the interface 94 or a communication line. In addition, when the program is broadcast to the computer 90 through the communication line, the computer 90 receiving the broadcast can also load the program into the main memory 92 to execute the above processing. In at least one embodiment, the storage 93 is a non-transitory tangible storage medium.

〈Appendix〉 The control device 4 of the incinerator facility described in each embodiment can be understood as follows, for example.

(1) The control device 4 of the incinerator facility according to the first aspect has a furnace body that burns the incinerated material while conveying it, and a feeder that supplies the incinerated material to the furnace body. The control device has: image information acquisition part 41, which periodically obtains image information including the receiving port of the aforementioned furnace body 122 connected to the end of the aforementioned feeder; image information identification part 42, based on the aforementioned figure Identifying whether the aforementioned incinerated objects at the aforementioned receiving port 122 are protruding from the furnace main body or not; and the supply state determination unit 43 continuously recognizes that the aforementioned incinerated objects are protruding from the aforementioned furnace body for a predetermined period of time. In the case of the state, it is judged that there is a sign of excess supply of the aforementioned incinerated materials to the aforementioned furnace body. According to this aspect and each of the following aspects, it is possible to improve the delay of the control according to the change in the supply amount of combustibles such as waste such as excess supply.

(2) The control device 4 of the incinerator equipment of the second aspect is the control device 4 of the incinerator equipment of the above-mentioned (1) aspect, wherein, it is also possible that the aforementioned image information acquisition unit 41 acquires information including the aforementioned The foregoing image information of at least a part of the inner wall of the opening 122 and the drying area is received.

(3) The control device 4 of the incinerator facility of the third aspect is the control device 4 of the incinerator facility of the above-mentioned aspect (1) or (2), wherein, the aforementioned supply state determination unit 43 may be, When it is continuously recognized that the incinerated material is protruding from the furnace body for a predetermined period of time, and the probability of oversupply based on the total extrusion length of the feeder is equal to or greater than a predetermined threshold value, it is determined that the incinerated product is Incineration has a sign of excess supply to the aforementioned furnace body.

(4) The control device 4 of the incinerator equipment of the fourth aspect is the control device 4 of the incinerator equipment of the above-mentioned (3) aspect, wherein, it is also possible that the aforementioned threshold value is a value that can be based on at least indicating carbon monoxide The value that changes the information on the amount of generation of nitrogen oxides and the actual information on the combustion status of the aforementioned incinerated materials indicating the amount of nitrogen oxides generated.

(5) The control device 4 of the incinerator equipment of the fifth aspect is the control device 4 of the incinerator equipment of the above-mentioned aspects (1) to (4), wherein, it may also be the aforementioned image information recognition unit 42 According to each divided area formed by dividing the receiving port 122 into a plurality of areas, whether or not the incinerated material is protruding from the furnace body is discriminated, and the supply state judging unit 43 continuously discriminates when a predetermined period of time When the to-be-incinerated objects protrude from the furnace body in at least a plurality of the divided regions, it is determined that there is a sign of excess supply of the incinerated objects to the furnace body.

(6) The control device 4 of the incinerator equipment of the sixth aspect is the control device 4 of the incinerator equipment of the above-mentioned aspects (1) to (5), wherein, it may also be the aforementioned image information recognition unit 42 , using at least the aforementioned image information as an explanatory variable, and using the pre-training model 491 obtained by using the aforementioned incinerated object protruding out and poor vision as target variables to identify whether the aforementioned incinerated object is in a protruding state, the aforementioned The supply state judging unit 43 judges that the incinerated material is incinerated at least when it continuously recognizes that the material to be incinerated is protruding from the furnace body and the feeder is pushed into the material to be incinerated for a predetermined period of time. There is a sign of excess supply to the aforementioned furnace body.

(7) The control device 4 of the incinerator equipment of the seventh aspect is the control device 4 of the incinerator equipment of the above-mentioned aspects (1) to (6), wherein, it can also be, and further has: the amount of air used for combustion At least one of a control unit or a feeder control unit, wherein the combustion air volume control unit changes the supply volume of combustion air based on the judgment result of the sign of excess supply, and the feeder control unit changes the supply volume of combustion air based on the aforementioned excess supply. At least one of the operating speed or the stroke of the feeder is changed according to the determination result of the supply omen. [Industrial Utilization]

According to the control device for the incinerator facility of the present disclosure, it is possible to improve the delay of the control according to the change in the supply amount of the incinerator such as waste.

100: Incinerator equipment 108: combustion chamber 110: extrusion device 4: Control device 41: Image Information Acquisition Department 42:Image Information Recognition Department 43:Supply status determination unit 44: Combustion air volume control unit 45: Feeder Control Department 49: memory department 491: Pre-training model 492: Image Information

[ Fig. 1 ] A schematic diagram showing a configuration example of an incinerator facility according to an embodiment of the present disclosure. [ Fig. 2 ] A block diagram showing a configuration example of a control device according to an embodiment of the present disclosure. [ Fig. 3 ] A diagram showing an example of an infrared image according to an embodiment of the present disclosure. [ Fig. 4 ] A flow chart showing an example of the operation of the control device according to the embodiment of the present disclosure. [ Fig. 5 ] A model diagram for explaining an example of the operation of the control device according to the embodiment of the present disclosure. [ Fig. 6 ] A model diagram for explaining an example of the operation of the control device according to the embodiment of the present disclosure. [ Fig. 7 ] A model diagram for explaining an example of the operation of the control device according to the embodiment of the present disclosure. [ Fig. 8 ] A model diagram illustrating an example of the operation of the control device according to the embodiment of the present disclosure. [ Fig. 9 ] A model diagram illustrating an example of the operation of the control device according to the embodiment of the present disclosure. [ Fig. 10 ] A schematic block diagram showing the configuration of a computer according to an embodiment of the present disclosure.

Claims (7)

A control device for incinerator equipment, comprising a furnace body that burns incinerated objects while conveying them, and a feeder that supplies the incinerated objects to the furnace body, the control device for incinerator equipment includes: The image information acquisition unit periodically acquires image information including the receiving port of the furnace body connected to the end of the feeder; an image information identification unit, based on the image information, to identify whether the incinerated object at the receiving port is protruding from the furnace body; and The supply state determination unit judges that the incinerated material is expected to be oversupplied to the furnace body when it continuously recognizes that the incinerated material is protruding from the furnace body for a predetermined period of time. The control device for incinerator equipment as described in Claim 1, wherein, The image information acquisition unit acquires the image information including at least a part of the inner wall of the receiving port and the drying area. The control device for incinerator equipment as described in claim 1 or 2, wherein, The supply state determination unit continuously recognizes that the to-be-incinerated material is protruding from the furnace main body for a predetermined period of time, and the probability of occurrence of oversupply based on the total extrusion length of the feeder is equal to or greater than a predetermined threshold value. In this case, it is judged that there is a sign of excess supply of the aforementioned incinerated materials to the aforementioned furnace body. The control device for incinerator equipment as described in claim 3, wherein, The threshold value is a value that can be changed based on the actual information on the combustion state of the incinerated material including at least information indicating the amount of carbon monoxide produced and information indicating the amount of nitrogen oxide produced. The control device for incinerator equipment as described in claim 1 or 2, wherein, The image information identification unit identifies whether or not the incinerated object is protruding from the furnace body for each of the divided areas obtained by dividing the receiving port into a plurality of areas, The supply state judging unit determines that the incinerated objects are oversupplied to the furnace body when it continuously recognizes that the incinerated objects protrude from the furnace body in at least a plurality of the divided regions for a predetermined period of time. omen. The control device for incinerator equipment as described in claim 1 or 2, wherein, The aforementioned image information identifying unit uses at least the aforementioned image information as an explanatory variable, and a pre-training model obtained by taking the aforementioned incinerated object protruding out and poor vision as target variables to identify whether the aforementioned incinerated object is an extruded object. out of state, The supply state judging unit judges that the incinerated object is incinerated at least when it continuously recognizes that the object to be incinerated is protruding from the furnace body and the feeder is pushed into the object to be incinerated for a predetermined period of time. There is a sign of excess supply to the aforementioned furnace body. The control device for incinerator equipment as described in claim 1 or 2, wherein, Further comprising: at least one of a combustion air volume control unit or a feeder control unit, wherein the combustion air volume control unit changes the supply volume of combustion air based on the determination result of the sign of excess supply, and the feeder The feeder control unit changes at least one of the operating speed and stroke of the feeder based on the determination result of the sign of excess supply.

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