JPH0833310B2 - How to display the operating status of garbage incineration equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for displaying an operating state of a refuse incineration facility.

[Conventional technology]

Conventionally, in waste incineration facilities, various detected values such as temperature and pressure at each location of the facility are grouped so that the operating state can be easily grasped, and the operating state involving complicated phenomena is used as the capacity index value and state index of the facility. The values are divided into three types, index values and defect index values, and managed separately.

That is, each index value of the refuse incineration facility is composed of, for example, the following representative amounts (values).

(I) Capacity index value: (ia) Boiler generated steam amount, (ib)
Waste heat generation.

(Ii) State index value: (iia) Overall incinerator temperature, (i
ib) Total steam system pressure including super heater, deaerator, etc. (iic) Power output of emergency power generation equipment.

(Iii) Defect index value: (iiia) NOx, SOx, H in the generated gas
Total amount of harmful gas including C1 and F, (iiib) CO in wastewater
Total amount of harmful substances such as D, DO, SS, PH, etc. (iiic) Total bearing fluctuation amount of main rotating machines such as induction blowers and forced draft blowers for turbines and ventilation equipment.

The temperature in the incinerator of (iia) is, for example, [a] incinerator upper temperature, [b] grate temperature, [c] boiler outlet gas temperature, [d] wet smoke washing device outlet temperature, [e] The post-combustion temperature and [f] upper temperature of the incinerator grate are integrated, and the pressure in (iib), the gas amount in (iiia), etc. are also integrated in a plurality of measured values.

The operation state is conventionally displayed by creating a trend graph for each index value, selectively selecting each trend graph based on display selection, etc., and displaying the screen on a CRT or the like.

[Problems to be Solved by the Invention]

In the case of the operating state display method of the conventional waste incineration facility,
Only a partial state can be grasped from the trend graph for each index value displayed on the screen, and in order to grasp the normal or abnormal state of the entire equipment, the display screen is sequentially switched to each trend graph screen. It is necessary to judge characteristics by comparing them many times.

Therefore, there is a problem that the current operating state and operating tendency of the refuse incineration facility cannot be easily grasped.

An object of the present invention is to make it possible to easily grasp the current operating state, operating tendency, etc. of a refuse incineration facility.

[Means for solving the problem]

In order to achieve the above-mentioned object, in the operation state display method of the refuse incineration facility of the present invention, by the current state graph display, each index value is displayed as a graph on the same screen so that the upper limit of the normal range from the starting point is the same. In addition, the abnormal range is highlighted with flicker, etc., and a screen for displaying a graph in which each index value is accumulated is formed by a cumulative graph display, and the overlapping portion based on the accumulation of each index value of the screen is overlapped. It is displayed in gradations, colors or patterns according to the degree, and the driving tendency analysis display compares the latest driving status graph display with the past driving status graph display to analyze the current driving status and analyze it. The results are displayed in characters and figures, and each index value is selectively hierarchically displayed by the hierarchical display function.

[Action]

In the case of the operating state display method of the refuse incineration facility of the present invention configured as described above, by the current state graph display, each index value is graphically displayed on the same screen with the same upper limit of the normal range, and, Since the flicker is highlighted in the abnormal range, it is possible to easily grasp the current operating state without switching the display screen as in the conventional case.

In addition, by cumulative graph display, each index value is accumulated to form a graph display screen, and the overlapping portion based on each accumulation is displayed in shades, colors, or patterns according to the degree of overlap. It is also possible to very easily grasp trends in operating conditions. Furthermore, since the present driving state is automatically analyzed and the result is displayed by the driving tendency analysis display, the present driving state and the like can be known more easily.

In addition, since each index value is selectively hierarchically displayed by the hierarchical display function, the content of each index value is displayed in an easy-to-understand manner, and the detailed operation of each index value can be known to grasp the current operating state in more detail. You can also

Therefore, it is possible to easily and appropriately grasp the current operating state and operating tendency of the refuse incineration facility.

〔Example〕

One embodiment will be described with reference to FIGS. 1 to 6.

The entire control system of the refuse incineration facility is configured as shown in Fig. 2, and various detected values such as pressure and temperature of each sensor installed in various places such as the control valve 1a and the thermometer 1b are controlled centrally. By the data collection processing of the device 2, the data is constantly collected in this device 2.

The central control unit 2 is connected to the control console unit 4, the operating state display unit 5, and the data file unit 6 via the communication bus 3, and the data of each detected value collected by the central control unit 2 is displayed on the display unit 5. By the input data processing of (1), they are grouped as in the conventional case, and are roughly classified into representative quantities of (i) capability index value, (ii) state index value, (iii) defect index value, and stored in the file device 6. .

Then, for example, in order to display the latest operating state as a graph while updating at 1-minute intervals, the display device 5 executes the current-state display graph creation processing every one minute, and saves the latest representative amount of data. Based on the present state graph display, the data of the present state graph display screen of FIG. 1 is formed and displayed.

Since the current state graph display screen of FIG. 1 displays each index value at the same time, the origin o of the triple concentric circle of the true normal range a, the gray range b, and the abnormal range c in order from the inside is set as the starting point. At the same time, the eight equiangular axes extending radially from this starting point are (ia) the amount of generated steam, (ib) the amount of heat generated by the waste, ...
(Iiic) It is set on the axis of each representative amount (value) of the power generation amount.

At this time, the concentric circle l at the boundary between the gray range b and the abnormal range c is the upper limit of the normal range in which the length from the starting point is the same for both axes.

Then, by the current state display graph creation process, the latest representative quantities as the respective index values are displayed as points Pi on the axes of FIG.
a, Pib, ..., Piiic, and each point Pia, Pi
b, ..., Piiic are connected by line segments to form the data on the graph display screen of FIG. 1, that is, the graph data for displaying the current state.

This graph data is stored in the file device 6, converted into a display signal and supplied to the CRT or the like of the display device 5. By this supply, the graph display screen of FIG. 1 is used instead of the conventional trend graph for each index value. Is displayed.

Then, in the case of the graph display screen of FIG. 1, the state of the entire equipment can be grasped at a time by checking whether or not the points Pia to Piiic of each plot exceed the upper limit concentric circles l, and the display screen can be changed as in the conventional case. Without switching and comparing
It is extremely easy to understand the overall operating status.

Further, the points on the abnormal plot that exceed the concentric circle l are emphasized by flicker, etc., and effective abnormality notification is performed.

Next, on the CRT or the like of the display device 5, it is possible to display the cumulative results of the points Pia to Piiic of each plot in FIG. 1 for a relatively short period (3 hours) and a long period (1 year). Therefore, the display device 5 executes the cumulative display graph creation process together with the current state display graph creation process.

Then, each time the current state display graph data is created, by the screen composition of the cumulative display graph creation processing, the data of the points Pia to Piiic of the plots of the formed axes are respectively combined with the respective data up to the previous time. Each index value is accumulated as shown in Fig. 3 (a) and (b), and the points Pia to Piiic on each axis plot and the latest 3 hours and 1 year cumulative results of the line segment connecting them are shown. The data of the cumulative graph screen representing the distribution (graph data for cumulative display) is formed.

Then, the formed short-term and long-term cumulative display graph data is stored in the file device 6, and is displayed on the CRT of the display device 5 as necessary by the cumulative graph display.

At this time, the cumulative graph screens of FIGS. 3 (a) and 3 (b) (hereinafter referred to as the 3-hour graph screen and the 1-year graph screen) are
Lines Pia-Piiic of each plot in the shaded distribution range
And the part (area) where the line connecting them is in the normal operating state
And the overlap degree is shown, and the degree of this overlap is indicated by the gradation of the brightness.

Therefore, it is possible to grasp the short-term and long-term distributions of the operating state and to know the tendency of the operating state on the three-hour, one-year graph screens of FIGS. 3A and 3B.

For example, if the 3-hour graph screen is displayed at the same time as the current-state graph display screen of FIG. 1, it is determined from the change in the gradation distribution of the 3-hour graph screen whether the current abnormality is transient or not, and the operating state is changed. It can be grasped accurately.

Further, the display update of the cumulative graph screen for 3 hours and 1 year may be performed not at every 1 minute but at a relatively long time interval of, for example, every 60 minutes.

Further, the degree of overlap between both cumulative graph screens may be expressed by a color change of coloring, a change of pattern, etc., instead of the lightness and shade of brightness.

Furthermore, the points (Pia-Piiic) of the latest (current) plot on both cumulative graph screens and the line segment that connects them are colored in a different color from the points Pia-Piiic and the line segments that connect them to make them stand out. Alternatively, the function of the current state display graph screen of FIG. 1 may be added to both cumulative graph screens.

Also, the points Pia to P of the latest plot on both cumulative graph screens
When the iiic falls within the abnormal range c, the color of the part may be changed or flickered to call attention.

Further, for example, in the data on the graph screen for one year, the gradation portion lighter than the predetermined density is erased, and only the gradation portion frequently generated which is higher than the predetermined density is left, and the characteristic of the normal operating state peculiar to the apparatus of the refuse incinerator You may enable it to display.

Further, in this embodiment, a combination of the display device 5 and the file device 6 also provides a condition-based classification and storage function of data, a driving tendency analysis function, and a hierarchical display function, which will be described below.

First, the data classification and storage function according to conditions will be described.

This function is a function of classifying the characteristics of the operating state according to various conditions such as the following a, b, and c and storing them in the file device 6.

I. The conditions of raw materials such as the quality of waste and the amount of waste that differ depending on the region and the day of the week.

B. Seasonal (weather) conditions such as rainy season, summer, winter, and the day after rain.

C. In-core load conditions such as high load, medium load, low load, start-up, and buried fire.

Then, by the classification storage processing of the display device 5 based on the set classification condition, for example, the data of the 3-hour graph screen is classified at a fixed time and stored in the file device 6.

At this time, for example, the condition (a) is classified based on the average value of the waste heat value, the condition (b) is classified based on the built-in calendar and the input meteorological data, and the condition (c) is classified into the generated steam amount. Classify based on

By this classification storage, the tendency of normal or abnormal operation condition under each condition can be determined from the change of each index value between the screens of the stored data under each condition.

In order to effectively use the file device 6, the similarity between newly stored data and existing data is compared and determined. For example, when 95% or more overlap, it is regarded as the data in the same operating state and is not stored. Therefore, it is desirable to perform so-called data compression.

In order to easily analyze the driving tendency and the like, the abnormal operation state data under each condition is stored in a dedicated abnormal file of the file device 6 so that its progress (history) can be known. Collected.

 Next, the driving tendency analysis function will be described.

This function is a function of analyzing and predicting a driving tendency such as an abnormal tendency based on the comparison between the present driving state and the past abnormal driving state.

Then, when this function is selected, for example, the latest 3-hour graph screen and the 3-hour, 1-year graph at the time of each abnormal operation in the past stored in the file device 6 are processed by the processing of the operation tendency analysis display of the display device 5. The screen is overlaid and compared,
The degree and tendency of the current driving state are analyzed from the matching past screen and the screen following the screen.

The result of this analysis is displayed on the CRT of the display device 5 as characters or figures, and the operating state can be predicted based on this display.

 Next, the hierarchical display function will be described.

This function is, for example, each representative value (ia) to (iiic) in FIG.
This is a function to display the detailed contents of each in a graph screen in a hierarchical structure.

Then, the display device 5 forms the data of the current state graph display screen of FIG. 1 and at the same time, the representative values (ia) to (ii).
ic) Form the data of the lower-layer graph display screen similar to FIG. 1 for each detected value constituting each.

This graph display screen shows, for example, in the case of the temperature in the incinerator shown in (iia) of FIG. 1, the temperature and combustion of each part of [a] to [f] that constitute this representative value as shown in FIG. The eight axes of the boiler outlet O ₂ concentration of [iiiaa], which constitutes the relevant amount of generated steam of (ia) and the harmful gas value of (iiia), becomes a screen radially extending from the origin (o) ′ as the starting point.

Incidentally, a ', b', c ', and l'in FIG. 4 are ranges a, b, and a in FIG.
The ranges and concentric circles corresponding to c and l are shown.

Then, for example, when the lower layer display of any one of the representative values (ia) to (iiic) is selected by the lower layer display selection in the screen display of FIG. 1, it is selected by the hierarchical display processing of the display device 5. A graph display screen for the lower layer as shown in FIG. 4 is displayed for the representative value, and the detailed content of each representative amount can be easily grasped from this display, and the location of the abnormality occurrence can be easily detected.

Note that, for example, when each of the temperatures [a] to [f] of FIG. 4 is a representative value of the temperature of the lower layer, the data of the graph display screen for the lower layer of each temperature of FIG. 4 is formed. At the same time, it is selectively displayed by a hierarchical display.

Further, the cumulative graph screens of FIGS. 3 (a) and 3 (b) may each be capable of hierarchical display.

Then, normally, the current state graph display screen of FIG. 1 and the three-hour graph screen of FIG. 3 (a) are displayed, and the tendency of the operating state is analyzed only when a manual request operation is performed. When the above setting is made, the processing flow of the display device 5 is as shown in FIGS. 5 and 6, for example.

By the way, in the above embodiment, the starting point is the origin of the concentric circles,
Although the display screen is a screen in which the axis of each representative value or the like extends radially from the starting point, for example, the starting point of each axis may be a point on the same line and the display screen may be a screen in which the axes extend in parallel.

〔The invention's effect〕

Since the present invention is configured as described above,
The following effects are achieved.

With the current status graph display, each index value is displayed as a graph on the same screen with a scale that makes the upper limit of the normal range the same, and moreover, since it is highlighted with flicker etc. in the abnormal range,
It is possible to easily grasp the current operating state without switching the display screen as in the past.

In addition, the cumulative graph display accumulates each index value to form a graph display screen, and the overlapping part based on each accumulation is displayed in shades, colors, or patterns according to the degree of overlap. The tendency of the state and the like can be grasped very easily.

Further, since the current driving state is automatically analyzed by the driving tendency analysis display and the result is displayed, the current driving state and the like can be more easily known.

In addition, since each index value is selectively hierarchically displayed by the hierarchical display device, the content of each index value is displayed in an easy-to-understand manner.
By knowing the detailed contents of each index value, it is possible to grasp the current operating state in more detail.

Therefore, it is possible to easily and appropriately grasp the current operating state and operating tendency of the refuse incineration facility.

[Brief description of drawings]

1 to 6 show one embodiment of the present invention, FIG. 1 is an explanatory view of a current state graph display screen, FIG. 2 is a block diagram of a control device, and FIGS. 3 (a) and 3 (b). Are explanatory diagrams of the cumulative graph screen, FIG. 4 is an explanatory diagram of the lower-layer graph screen, and FIGS. 5 and 6 are flowcharts for explaining the operation. 5: Operating status display device, o: Origin as starting point, a
...... Normal range, b ... Gray range, c ... Abnormal range, l
...... A concentric circle as the upper limit of the normal range.

Claims (1)

[Claims] 1. A method of displaying an operating state in which a performance index value such as the amount of generated steam of a refuse incineration facility, a state index value such as a furnace temperature, and a defect index value such as a shaft vibration amount are displayed by a current state graph display. Each index value is displayed in a graph on the same screen so that the upper limit of the normal range from the starting point is the same, and in the case of an abnormal range, it is highlighted by flicker, etc., and each index value is accumulated by a cumulative graph display. A screen for displaying a graph is formed, and the overlapping portion based on the accumulation of each of the index values on the screen is displayed in gradation, coloring, or a pattern according to the degree of overlapping, and the latest driving is displayed by the driving tendency analysis display. The current operating status is analyzed by comparing the graphical display of the status with the graphical display of the past operating status, the analysis result is displayed in characters and figures, and the above-mentioned index values are selectively selected by the hierarchical display function. A method for displaying the operating status of a refuse incineration facility, which is characterized by hierarchical display.