JPH01305221A - Combustion regulating device for combustion equipment - Google Patents

Abstract

PURPOSE:To maintain an optimum combustion state, by a method wherein, during operation of combustion equipment, e.g., a boiler for generation, the state value, the control value, and the experience value of the equipment, stored in a data base, are displayed on a CRT screen, and control is effected as confirmation is made. CONSTITUTION:The operation state value of each part of combustion equipment 1 is automatically measured by a state value measuring instrument 2, and is stored in a state value memory data base 5 in a manner to be related to a measuring time by a measuring time recorder 4. An operation allowable range decided by operation experience is stored as a management value in a management value data base 6. In data stored in each data base, corresponding data is extracted by a data extractor 7 based on a measuring time specified by an input device 13 to store the data temporarily. By using temporarily stored data, necessary computing processing is effected and the result is displayed on a display device 12. Based on the result, an operator 17 performs control of operation through a device regulating setter 18.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application IJ'] The present invention relates to an adjustment device for combustion equipment such as a power generation boiler, and particularly to a combustion adjustment device suitable for ensuring and maintaining optimal combustion.

[Conventional technology]

In recent years, high reliability and
Highly efficient operation is strongly required, and in order to achieve these, it is necessary to comply with environmental regulations such as NOx 4 degrees in exhaust gas, maintain a stable flame, maintain an appropriate excess air ratio, and reduce unburned losses. It is essential to ensure and maintain optimal combustion conditions, including the achievement of efficient combustion.

However, in the conventional operation of combustion equipment, the operator reads the numerical values of various instruments and performs the operation while taking into account the operator's experience and intuition based on that experience, ensuring optimal combustion conditions. , no reasonable means of maintenance had been established.

That is, FIG. 6 shows a conventional operation method for combustion equipment, and the combustion equipment 1 is operated by adjusting various operating terminals so that the optimum combustion state can be secured through trial and error through trial run adjustment, etc.
After the protection and control equipment has been set up, full-scale operation begins. Various main status values are measured by the measuring device 2, sent to the control monitor 110 as current values, and displayed on the display meter 102 on the panel. Via the device 18, some of the combustion equipment operating terminals are automatically controlled.

Regardless of automatic control, due to changes in fuel and aging,
The combustion state may deviate from the optimal state adjusted during the trial run, and the operator 17 must check the control and monitoring panel's second meter 102.
These conditions are read from the past driving record book 103.
While referring to the management value ledger 104 and the set value recording ledger 105, the operator determines corrections and adjustment operations by taking into account his own experience and intuition based on his experience, and adjusts the combustion equipment equipment via the equipment adjustment setting device 18. Adjustments were being made.

[Problem to be solved by the invention]

Therefore, the conventional operating methods have the following problems, and the problems are especially serious in coal-fired combustion equipment (where management and adjustment items are multifaceted).

+11 Operational operations are determined by operators based on past performance data and adjustment data, but it takes a considerable amount of time to search and understand this data, making it impossible to respond urgently or quickly. there were.

(2) In order to respond quickly, operators must perform operations based on their memory, experience, and intuition, and there may be significant differences in operation depending on the operator's skill level, resulting in optimal combustion conditions. It was difficult to secure and maintain.

(Due to the problems described in 311, delays in judgment, errors in judgment, and erroneous operations by operators were likely to occur, and in the event of an abnormal or dangerous situation, appropriate and prompt measures could not be taken, leading to the risk of developing into a serious accident.) .

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide a combustion adjustment device that can easily ensure and maintain an optimal combustion state.

[Failure to solve the problem]

The problem with the conventional technology described above is that in the combustion equipment adjustment device, there is no means for detecting and measuring the operational status of the combustion equipment such as exhaust gas properties, air flow rate, fuel flow rate, etc., and inputting manually measured values such as fuel properties. a state value record database that stores each input state value in association with the measurement time; a management value database that organizes and records preset performance ranges and allowable operating ranges of each state value; A display time setting device that sets the measurement time and measurement time group of the target data by key input from the device, and the data corresponding to the set measurement time and measurement time group are extracted from each database and temporarily stored. A data extractor, a status value display calculator that performs calculations to display the extracted data in association with status value data and management value data according to a preset procedure, a comparison display calculator that performs calculations for comparing and displaying state value data and management value data; a history display calculator that performs calculations to display changes in state quantities between different times according to a preset procedure; It has a display switching device that arbitrarily selects and switches each of the display calculation results to be sent to the display device by key input from the input device, and a display device that displays the display calculation results selected by the display switching device on a CRT screen. This problem is solved by a combustion adjustment device for combustion equipment characterized by the following.

[Effect]

The state values and management values of the combustion equipment are stored in the above database in association with time, and the current state values and management values are retrieved from the database and correlated, and at the same time CR
By displaying it on the T screen, the operator can understand the current operating status and the margin for the control value, and can make optimal adjustments by operating operations that increase the margin while viewing the results on the CR'r screen. .

In addition, if the current status value is too far from the control value, discoloration or flickering will occur, and the corresponding data will be displayed preferentially on the CRT screen, so the corresponding status value will fall within the control value range while viewing the results on the CRT screen. By operating in this way, you can quickly perform optimum adjustment operations.

By comparing and displaying status value data between different times, differences with past driving operations become clear, and by performing driving operations to eliminate these differences while viewing the results on the CRT screen, any past driving operation can be It becomes possible to restore the optimal state.

In addition, display data in which the ratio of mutual state values exceeds a specified range in the comparison display is identified by discoloration or flicker, so that the difference can be quickly grasped and countermeasures can be taken.

Furthermore, by displaying the history of status values on the CRT screen, you can understand the origin of status changes and take appropriate countermeasures.You can also check the corrective action taken while looking at the CRT screen, so you can avoid erroneous operations. becomes possible.

Further, by discoloring or flickering the history display portion where the status value exceeds the management value range, it is possible to quickly grasp the abnormal change process of the status value, and it is possible to speed up countermeasures.

Automatic optimal combustion adjustment is also possible by automatically performing a correction operation to keep the state value within the management value or a restoring operation to match the past optimal state value with the above-mentioned operation performed by the operator.

〔Example〕

The present invention will be explained below using examples.

FIG. 1 shows an embodiment of the overall configuration of a combustion adjustment device that is compatible with the present invention.

The combustion equipment, for example, the exhaust gas properties, air flow rate, fuel flow rate, steam pressure, steam temperature, etc. of the combustion equipment, such as the boiler equipment 1, the operating status values, control status values, etc. of each part are automatically detected and measured by the status value measuring device 2, and the measurement time recording device 4, it is sent to the state value record database 5 and stored in association with the measurement time. Also,
Manual analysis values such as fuel analysis values and/or manual measurement values 3
is also stored in the state value record database 5 by the measurement time recorder 4 in association with the measurement time.

On the other hand, the permissible operating ranges and optimal operating ranges corresponding to each state value determined based on the trial run adjustment, design plan, or actual operating results are input as management values from the input device 13 along with the determination time, and are stored in the management value database 6. .

Based on the measurement time and measurement time group specified by the input device 13 to the display time setter 14, the corresponding data stored in each data extractor is extracted by the data extractor 7 and temporarily stored.

Using the data temporarily stored in the data extractor 7, calculations necessary for status value display, comparison display, and history display, which will be described later, are carried out.
Processing is performed by the state value display calculator 8, the comparison display calculator 9, and the history display calculator 10, respectively, and the results are displayed on the display device 12 via the display switch 11.

The display switch 11 switches the display based on settings from the input device 13.

Based on the ratio specified by the input device 13 to the comparison discrimination setting device 15, the comparison display calculator 9 performs comparison discrimination processing.

The operator 17 performs operation and adjustment operations via the device adjustment setting device 18 based on the information displayed on the display device 12.

Further, automatic adjustment operation is also possible in the operation amount determining unit 16 based on the calculation results of each calculation unit.

FIG. 2 is an explanatory diagram of a state value display screen showing an example of the processing contents of the state value display calculator 8. As shown in FIG.

An arbitrary measurement time set in the display time setter 14 is displayed on the screen as a display time 23, and a state value corresponding to this display time is displayed as a current value 31 in the form of a bar graph. Furthermore, various management values in the same graph are the upper limit of management value 30.
, upper limit trip 29, control value lower limit 32, lower limit trip 3
Displayed as 3. Display time can be selected using display time selection key 47.
The display time can be arbitrarily specified by operating the backward display time key 48 and the display time advance key 49, and the display time can be arbitrarily moved forward or backward continuously, and the graph 31 also changes to the state value corresponding to the changed display time. Further, by operating the current time key 50, the displayed time will match the current time, and the graph 31 will be updated with the latest current value that is currently being captured.

When the current value 31 and the upper and lower management value limits 30.33 intersect, the corresponding bar graph changes color or flickers. Further, a screen including a graph in this state is preferentially selected and displayed.

By operating the comparison display key 44, the comparison display screen is switched to the comparison display screen shown in FIG.

FIG. 3 is an explanatory diagram of a comparison display screen showing an example of the processing contents of the comparison display calculator 9.

The screen displays the arbitrary measurement time set in the display time setter 14 shown in FIG. 1, the display time 23 and the comparison time 51.
The status value 53 corresponding to the display time and the status value 54 corresponding to the comparison time are displayed as adjacent bar graphs, and the management value 29.30.3 corresponding to each time is displayed as
2.33 (described below in Figure 2) is also displayed.

When a ratio is specified in the comparison discrimination setting device 15 (FIG. 1) in a prescribed manner, if the ratio between 53 and 54 exceeds the specified ratio, the graph will change color or flicker.

By operating the display comparison time selection key 64, the display time and comparison time can be specified. By operating the comparison time backward key 62, the comparison time forward key 63, the display time backward key 48, and the display time advance key 49, each time is independently and continuously advanced forward or backward.

The state value graphs 53 and 54 change corresponding to changes at each time. Further, by operating the comparison time current key 65, the comparison time matches the current time, and the bar graph 54 is updated with the latest state value currently captured.

By operating the comparison display cancel key 61, the screen is switched to the status value display screen shown in FIG.

By operating the trend graph key 43, the screen is switched to the history display screen as shown in FIG.

FIG. 4 is an explanatory diagram of a history display screen showing the processing contents of the history display calculator 10 (FIG. 1).

An arbitrary measurement time set in the display time setter (14 in FIG. 1) is displayed on the screen as the display time 23 and the origin time 71. The state values from the origin time 71 to a time back by the display time width set in the display time setter are displayed like a history curve 75.

Portion 75a that deviates from the pipe immediate value 30 in the history curve (4th A
(Figure) appears discolored or flickering.

The display time width can be arbitrarily selected by operating the display time width selection key 82.

The origin time can be arbitrarily set by operating the origin time selection key 85. The origin time is continuously advanced forward or backward by operating the origin time forward/backward keys 83, 84. The history curve 75 also changes in response to changes in these time settings.

By operating the origin time current key 86, the origin time coincides with the current time, and the history curve 75 is set with the latest status value currently being imported.
will be updated.

By operating the display time forward/backward keys 48, 49, the display time cursor 77 moves forward or backward, and the display time 23 changes accordingly.

By operating the status value graph key 81, the screen changes to the status value display screen shown in FIG.

The display times 23 of the above-mentioned status value display screen, comparison display screen, and history display screen are inherited from each other even during screen switching operations.

In addition, each screen displays a screen number 21, screen name 22, state quantity name 27, current value numerical display 28, and graph range 34, and a main menu for searching and calling the required screen from the prepared multiple screens. A key 41 and a submenu key 42 are prepared.

FIG. 5 is an example of a status value display screen for overall overview management of the boiler combustion device. Main state values 91 of exhaust gas properties as a result of boiler and combustion, and burner pattern 9
This is an example in which 2 is displayed.

〔Effect of the invention〕

According to the present invention, judgments regarding operating operations and adjustment operations, which conventionally relied on the memory, experience, and intuition of operators, can be made based on current state values of equipment.
Since management values and actual values can be quickly and accurately checked and understood while making decisions, and the results of operations can be immediately understood and evaluated, it becomes easier to ensure and maintain combustion conditions.

Furthermore, differences in operation due to the skill level of the operator are reduced, making it possible to prevent delays in judgment and erroneous operations due to errors in judgment, thereby improving the reliability of driving operations.

Highly efficient operation is possible by maintaining optimal combustion conditions, and operating costs can be reduced.

[Brief explanation of the drawing]

FIG. 1 is an embodiment of the overall configuration of a combustion adjustment device for combustion equipment according to the present invention, FIG. 2 is an explanatory diagram of a status value display screen in the present invention, and FIG. 3 is an explanatory diagram of a comparative display screen in the present invention. , FIG. 4 is an explanatory diagram of the history display screen in the present invention, FIG. 4A is an enlarged view of A in FIG. 4, and FIG. 5 is a status value display screen for overall management of boiler combustion equipment that is applicable to the present invention figure,
FIG. 6 is an explanatory diagram of a conventional combustion equipment adjustment device. ■... Combustion equipment, 2... Operating status value measuring device, 3...
- Manual measurement value, 4... Measurement time recorder, 5... Status value recording database, 6... Management value database, 7
...Data extractor, 8...Status value display calculator, 9.
... Comparison display calculator, IO... History display calculator, 11
. . . Display switching device, 12 . ...Equipment adjustment setting device. Agent Patent Attorney Takeshi Kawakita

Claims (6)

[Claims] (1) The combustion equipment adjustment device has a means for detecting, measuring, and inputting the operational status of the combustion equipment such as exhaust gas properties, air flow rate, and fuel flow rate, and a means for inputting manually measured values such as fuel properties. There is a state value record database that stores each state value associated with the measurement time, a management value database that organizes and records the actual range and allowable operating range of each preset state quantity, and a display time setter that sets the measurement time and measurement time group of the data to be set; a data extractor that extracts and temporarily stores data corresponding to the set measurement time and measurement time group from each database; A status value display calculator that performs calculations to associate and display status value data and management value data according to a preset procedure; A comparison display calculator that performs calculations for comparison display, a history display calculator that performs calculations to display changes in state quantities between different times according to preset procedures, and display by key input from an input device. A combustion equipment characterized by having a display switching device which arbitrarily selects and switches each of the display calculation results to be sent to the device, and a display device which displays the display calculation results selected by the display switching device on a CRT screen. Combustion adjustment device. (2) In the combustion adjustment device for combustion equipment according to claim 1, the amount of adjustment for the combustion equipment is determined according to a preset procedure based on the calculation results of the status value display calculator, the comparison display calculator, and the history display calculator. A combustion adjustment device for combustion equipment, characterized in that it is provided with a manipulated variable determiner that automatically adjusts the combustion equipment based on this adjusted value determined value. (3) In the combustion adjustment device for combustion equipment according to claim 1, when the state value in the state value display calculator deviates from the control value range, the corresponding data display on the CRT screen of the display device changes color or flickers. A combustion adjustment device for combustion equipment, characterized by being equipped with a value display calculator. (4) In the combustion adjustment device for combustion equipment according to claim 1, from among a plurality of screens prepared in advance, a screen including a state quantity display whose state value deviates from the range of control values is given priority. A combustion adjustment device for combustion equipment, characterized in that it is provided with a display switch that selects and switches the display. (5) In the combustion adjustment device for combustion equipment according to claim 1, when the ratio of the state values to be compared in the comparison display calculator exceeds a ratio specified in advance by key input from the input device,
A combustion adjustment device for combustion equipment, characterized in that the relevant data display on a CRT screen of a display device changes color or flickers, and is provided with a comparison display calculator. (6) In the combustion adjustment device for combustion equipment according to claim 1, if the range of the relevant control value is exceeded during the transition process of the state quantity in the history display calculator, the part that exceeded the range will be displayed on the CRT screen of the display device. A combustion adjustment device for combustion equipment, comprising a history display calculator that discolors or flickers display data.