阅读说明：本技术 一种v型炉排式垃圾焚烧炉自动燃烧的控制方法及其系统 (Control method and system for automatic combustion of V-shaped grate type garbage incinerator ) 是由 刘川 宋建宾 张翔 于 2021-09-10 设计创作，主要内容包括：本发明公开了一种V型炉排式垃圾焚烧炉自动燃烧的控制方法及其系统,属于垃圾焚烧炉燃烧控制技术领域,控制方法包括阈值设定步骤：制定控制参数的燃烧阈值；偏差设定步骤：预设定偏差上限值和偏差下限值；参数采集步骤：根据参数偏差实时形成参数偏差曲线；运行调整步骤：当参数偏差以向上的趋势到达偏差上限值或偏差下限值时,停止V型炉排和/或停止给料器；当参数偏差以向下的趋势到达偏差上限值或偏差下限值时,启动V型炉排和/或给料器。系统包括阈值设定模块、偏差设定模块、参数采集模块和运行调整模块。本发明解决了现有的垃圾焚烧炉需要较长时间才能把控制参数调整到阈值的偏差范围内,导致垃圾燃烧的效率低下的问题。(The invention discloses a control method and a system for automatic combustion of a V-shaped grate type garbage incinerator, belonging to the technical field of combustion control of the garbage incinerator, wherein the control method comprises the following threshold setting steps: setting a combustion threshold value of the control parameter; deviation setting step: presetting an upper deviation limit value and a lower deviation limit value; a parameter acquisition step: forming a parameter deviation curve in real time according to the parameter deviation; and (3) operation adjustment: stopping the V-shaped grate and/or stopping the feeder when the parameter deviation reaches the deviation upper limit value or the deviation lower limit value in an upward trend; when the parameter deviation reaches the deviation upper limit value or the deviation lower limit value in a downward trend, the V-shaped grate and/or the feeder are started. The system comprises a threshold setting module, a deviation setting module, a parameter acquisition module and an operation adjusting module. The invention solves the problem that the existing garbage incinerator needs a long time to adjust the control parameter to the deviation range of the threshold value, so that the garbage combustion efficiency is low.)

1. A control method for automatic combustion of a V-shaped grate type garbage incinerator is characterized by comprising the following steps:

a threshold setting step: setting a combustion threshold value of the control parameter according to a daily production curve;

deviation setting step: presetting an upper deviation limit value and a lower deviation limit value between a control parameter and a combustion threshold value;

a parameter acquisition step: collecting control parameters in production in real time through a sensor assembly;

comparing the control parameter with the combustion threshold value to obtain a parameter deviation, and forming a parameter deviation curve in real time according to the parameter deviation;

and (3) operation adjustment: stopping the V-grate and/or stopping the feeder when the parameter deviation reaches the deviation upper limit value or deviation lower limit value in an upward trend; and when the parameter deviation reaches the deviation upper limit value or the deviation lower limit value in a downward trend, starting the V-shaped grate and/or the feeder, wherein the slope of the parameter deviation curve is greater than zero, the parameter deviation changes in an upward trend, and the slope of the parameter deviation curve is less than zero, the parameter deviation changes in a downward trend.

2. The method for controlling the automatic combustion of the V-grate type garbage incinerator according to claim 1, wherein: the control parameters comprise steam flow and/or oxygen amount;

the threshold setting step is as follows: setting a combustion threshold value of the steam flow according to a daily production steam flow curve, and setting a combustion threshold value of the oxygen according to a daily production oxygen curve;

the parameter acquisition step comprises the following steps: the steam flow is collected in real time through a steam flow meter arranged in the V-shaped grate, and the oxygen amount is collected through an oxygen meter arranged in the V-shaped grate.

3. The method for controlling the automatic combustion of the V-grate type garbage incinerator according to claim 2, wherein: the control parameters further include an IR temperature;

the threshold setting step is as follows: setting a combustion threshold value of the second flue inlet temperature according to a daily production IR temperature curve;

the parameter acquisition step comprises the following steps: and acquiring the IR temperature in real time through a temperature sensor arranged at the inlet of a second flue of the V-shaped grate.

4. The method for controlling the automatic combustion of the V-bank type waste incinerator according to claim 3, wherein: before the threshold setting step, the method further comprises a mode selection step, wherein the mode selection step comprises the following steps: presetting a first mode, a second mode and a third mode;

setting the highest priority of the first mode, the second mode and the third mode, wherein when the first mode is set as the highest priority, the control parameter is the steam flow, when the second mode is set as the highest priority, the control parameter is the IR temperature, and when the third mode is set as the highest priority, the control parameter is the oxygen amount.

5. The method of claim 4, wherein the operation adjusting step further comprises: and deriving the parameter deviation curve to obtain the slope of the parameter deviation curve at the current time.

6. The utility model provides a system that V type grate formula waste incinerator self-combustion which characterized in that: the device comprises a threshold setting module, a deviation setting module, a parameter acquisition module and an operation adjusting module;

the threshold setting module is used for making a combustion threshold of the control parameter according to the daily production curve;

the deviation setting module is used for presetting a deviation upper limit value and a deviation lower limit value between the control parameter and the combustion threshold value;

the parameter acquisition module is used for acquiring control parameters in production in real time through the sensor assembly; the combustion control system is also used for comparing the control parameter with the combustion threshold value to obtain parameter deviation and forming a parameter deviation curve in real time according to the parameter deviation;

the operation adjusting module is used for stopping the V-shaped fire grate and/or stopping the feeder when the parameter deviation reaches the deviation upper limit value or deviation lower limit value in an upward trend; and the V-shaped grate and/or the feeder are/is started when the parameter deviation reaches the deviation upper limit value or deviation lower limit value in a downward trend.

7. The system of claim 6, wherein the V-bank waste incinerator is configured to automatically burn: the control parameters comprise steam flow and/or oxygen amount; the threshold setting module is specifically used for setting a combustion threshold of the steam flow according to a daily production steam flow curve and setting a combustion threshold of the oxygen amount according to a daily production oxygen amount curve; the parameter acquisition module is specifically used for acquiring the steam flow in real time through a steam flow meter arranged in the V-shaped grate and is also used for acquiring the oxygen content through an oxygen meter arranged in the V-shaped grate.

8. The system of claim 7, wherein the V-bank waste incinerator is configured to automatically burn: the control parameters further include an IR temperature; the threshold setting module is specifically used for setting a combustion threshold of the second flue inlet temperature according to a daily production IR temperature curve; the parameter acquisition module is specifically used for acquiring the IR temperature in real time through a temperature sensor arranged at the inlet of a second flue of the V-shaped grate.

9. The system of claim 8, wherein the V-bank waste incinerator is configured to automatically burn: the device also comprises a mode selection module, wherein the mode selection module is used for presetting a first mode, a second mode and a third mode; and the control parameter is the steam flow when the first mode is set to be the highest priority, the control parameter is the IR temperature when the second mode is set to be the highest priority, and the control parameter is the oxygen amount when the third mode is set to be the highest priority.

10. The system of claim 9, wherein the operation adjustment module is further configured to derive the parameter deviation curve to obtain a slope of the parameter deviation curve at a current time.

Technical Field

The invention relates to the technical field of combustion control of garbage incinerators, in particular to a control method and a system for automatic combustion of a V-shaped grate type garbage incinerator.

Background

The treatment of reducing, harmlessly and recycling the domestic garbage is a major environmental problem at present and in the future, and the domestic garbage incineration power generation technology is rapidly developed in China because the domestic garbage reduction is obvious, waste heat can be used for power generation, recycling is realized, and secondary pollution to the environment can be controlled. The garbage is pushed to the fire grate from the chute by a feeder, the fire grate is a garbage incineration device, and the burnt slag is discharged to a slag extractor through a slag falling pipe to be collected.

The V-type grate garbage incinerator adopts a quantitative mode to control the combustion of garbage in the V-type grate. When the controlled parameter exceeds the upper threshold, the garbage combustion is slowed, and when the controlled parameter is lower than the lower threshold, the garbage combustion is enhanced. However, when the control parameter exceeds the upper limit value or is lower than the lower limit value, the garbage combustion is adjusted, adjustment delay occurs, and the control parameter can be adjusted to be within the deviation range of the threshold value within a long time, so that the garbage combustion efficiency is low.

Disclosure of Invention

In view of the above-mentioned drawbacks, an object of the present invention is to provide a method for controlling automatic combustion of a V-grate type waste incinerator, which solves the problem of low efficiency of waste combustion caused by the fact that the existing waste incinerator needs a long time to adjust the control parameter to the deviation range of the threshold value.

In view of the above-mentioned drawbacks, another objective of the present invention is to provide an automatic combustion system for a V-grate type waste incinerator, which solves the problem of low waste combustion efficiency caused by the fact that the existing waste incinerator needs a long time to adjust the control parameter to the deviation range of the threshold value.

In order to achieve the purpose, the invention adopts the following technical scheme: a control method for automatic combustion of a V-shaped grate type garbage incinerator comprises the following steps:

a threshold setting step: setting a combustion threshold value of the control parameter according to a daily production curve;

deviation setting step: presetting an upper deviation limit value and a lower deviation limit value between a control parameter and a combustion threshold value;

a parameter acquisition step: collecting control parameters in production in real time through a sensor assembly;

comparing the control parameter with the combustion threshold value to obtain a parameter deviation, and forming a parameter deviation curve in real time according to the parameter deviation;

and (3) operation adjustment: stopping the V-grate and/or stopping the feeder when the parameter deviation reaches the deviation upper limit value or deviation lower limit value in an upward trend; and when the parameter deviation reaches the deviation upper limit value or the deviation lower limit value in a downward trend, starting the V-shaped grate and/or the feeder, wherein the slope of the parameter deviation curve is greater than zero, the parameter deviation changes in an upward trend, and the slope of the parameter deviation curve is less than zero, the parameter deviation changes in a downward trend.

Notably, the control parameters include steam flow and/or oxygen;

the threshold setting step is as follows: setting a combustion threshold value of the steam flow according to a daily production steam flow curve, and setting a combustion threshold value of the oxygen according to a daily production oxygen curve;

the parameter acquisition step comprises the following steps: the steam flow is collected in real time through a steam flow meter arranged in the V-shaped grate, and the oxygen amount is collected through an oxygen meter arranged in the V-shaped grate.

Optionally, the control parameter further comprises an IR temperature;

the threshold setting step is as follows: setting a combustion threshold value of the second flue inlet temperature according to a daily production IR temperature curve;

the parameter acquisition step comprises the following steps: and acquiring the IR temperature in real time through a temperature sensor arranged at the inlet of a second flue of the V-shaped grate.

Specifically, the method further comprises a mode selection step before the threshold setting step, wherein the mode selection step is as follows: presetting a first mode, a second mode and a third mode;

setting the highest priority of the first mode, the second mode and the third mode, wherein when the first mode is set as the highest priority, the control parameter is the steam flow, when the second mode is set as the highest priority, the control parameter is the IR temperature, and when the third mode is set as the highest priority, the control parameter is the oxygen amount.

Preferably, the operation adjusting step further comprises: and deriving the parameter deviation curve to obtain the slope of the parameter deviation curve at the current time.

It is worth to say that the system for the automatic combustion of the V-shaped grate type garbage incinerator comprises a threshold setting module, a deviation setting module, a parameter acquisition module and an operation adjusting module;

the threshold setting module is used for making a combustion threshold of the control parameter according to the daily production curve;

the deviation setting module is used for presetting a deviation upper limit value and a deviation lower limit value between the control parameter and the combustion threshold value;

the parameter acquisition module is used for acquiring control parameters in production in real time through the sensor assembly; the combustion control system is also used for comparing the control parameter with the combustion threshold value to obtain parameter deviation and forming a parameter deviation curve in real time according to the parameter deviation;

the operation adjusting module is used for stopping the V-shaped fire grate and/or stopping the feeder when the parameter deviation reaches the deviation upper limit value or deviation lower limit value in an upward trend; and the V-shaped grate and/or the feeder are/is started when the parameter deviation reaches the deviation upper limit value or deviation lower limit value in a downward trend.

Optionally, the control parameter comprises steam flow and/or oxygen amount; the threshold setting module is specifically used for setting a combustion threshold of the steam flow according to a daily production steam flow curve and setting a combustion threshold of the oxygen amount according to a daily production oxygen amount curve; the parameter acquisition module is specifically used for acquiring the steam flow in real time through a steam flow meter arranged in the V-shaped grate and is also used for acquiring the oxygen content through an oxygen meter arranged in the V-shaped grate.

In particular, the control parameters further include IR temperature; the threshold setting module is specifically used for setting a combustion threshold of the second flue inlet temperature according to a daily production IR temperature curve; the parameter acquisition module is specifically used for acquiring the IR temperature in real time through a temperature sensor arranged at the inlet of a second flue of the V-shaped grate.

Preferably, the mobile terminal further comprises a mode selection module, wherein the mode selection module is used for presetting a first mode, a second mode and a third mode; and the control parameter is the steam flow when the first mode is set to be the highest priority, the control parameter is the IR temperature when the second mode is set to be the highest priority, and the control parameter is the oxygen amount when the third mode is set to be the highest priority.

Specifically, the operation adjustment module is further configured to derive the parameter deviation curve to obtain a slope of the parameter deviation curve at the current time.

One of the above technical solutions has the following beneficial effects: in the control method for the automatic combustion of the V-shaped grate type garbage incinerator, the parameter deviation corresponding to the control parameter is analyzed through the threshold value setting step, the deviation setting step, the parameter acquisition step and the operation adjusting step, and the V-shaped grate and the feeder are controlled according to the trend of the parameter deviation, so that the problem that the efficiency of garbage combustion is low because the existing garbage incinerator starts to adjust the combustion of garbage when the control parameter exceeds an upper limit value or is lower than a lower limit value, adjustment delay occurs, and the control parameter can be adjusted to be within the deviation range of the threshold value within a long time is solved. Because the deviation upper limit value or the deviation lower limit value is used for controlling, the motion states of the feeder and the V-shaped fire grate are calculated and controlled according to the PID, compared with a mode of directly controlling parameters, the correction is simpler and more convenient, the combustion stability of the incinerator is easier to control, and the coming and burning efficiency is improved.

Drawings

FIG. 1 is a flow chart of one embodiment of the present invention;

FIG. 2 is a graph of a first mode of an embodiment of the present invention;

FIG. 3 is a graph of a second mode of an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the invention. In order to simplify the disclosure of embodiments of the invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, embodiments of the invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed.

The following describes a control method for automatic combustion of a V-grate waste incinerator according to an embodiment of the present invention with reference to fig. 1 to 3, including the following steps:

a threshold setting step: setting a combustion threshold value of the control parameter according to a daily production curve;

deviation setting step: presetting an upper deviation limit value and a lower deviation limit value between a control parameter and a combustion threshold value;

a parameter acquisition step: collecting control parameters in production in real time through a sensor assembly;

comparing the control parameter with the combustion threshold value to obtain a parameter deviation, and forming a parameter deviation curve in real time according to the parameter deviation; specifically, the parameter deviation is obtained by subtracting the combustion threshold from the control parameter.

And (3) operation adjustment: stopping the V-grate and/or stopping the feeder when the parameter deviation reaches the deviation upper limit value or deviation lower limit value in an upward trend; and when the parameter deviation reaches the deviation upper limit value or the deviation lower limit value in a downward trend, starting the V-shaped grate and/or the feeder, wherein the parameter deviation changes in an upward trend when the slope of the parameter deviation curve is greater than zero and the parameter deviation changes in a downward trend when the slope of the parameter deviation curve is less than zero, as shown in figures 2 and 3. Specifically, stopping the V-shaped grate can reduce the stirring of rubbish, stopping the feeder can reduce rubbish feeding volume, starting the V-shaped grate can increase the stirring of rubbish, and starting the feeder can increase rubbish feeding volume. When the parameter deviation reaches the deviation upper limit value or the deviation lower limit value in an upward trend, the continuous increase of the combustion in the furnace is indicated, the V-shaped grate and the feeder are required to be controlled, the garbage feeding amount is reduced, the garbage turning is reduced, and the combustion increase trend in the furnace is reduced; when the parameter deviation reaches the deviation upper limit value or the deviation lower limit value in a downward trend, the situation that the combustion working condition in the furnace is insufficient is shown, the feeder and the V-shaped grate are required to be controlled to increase the feeding amount of the garbage, and the garbage turnover is increased. When the parameter deviation upwards reaches the deviation upper limit value or the deviation lower limit value, or downwards reaches the deviation upper limit value or the deviation lower limit value, start-stop control is started, advanced adjustment in the V-shaped grate combustion process is achieved, the V-shaped grate combustion stable state is maintained, the combustion working condition can be well controlled in the deviation range, if the parameter deviation upwards reaches the deviation upper limit value, the feeder and the grate are controlled, the garbage feeding amount is reduced, and the parameter deviation cannot be adjusted in the deviation range for a long time, so that automatic jumping is caused.

In the control method for the automatic combustion of the V-shaped grate type garbage incinerator, the parameter deviation corresponding to the control parameter is analyzed through the threshold value setting step, the deviation setting step, the parameter acquisition step and the operation adjusting step, and the V-shaped grate and the feeder are controlled according to the trend of the parameter deviation, so that the problem that the efficiency of garbage combustion is low because the existing garbage incinerator starts to adjust the combustion of garbage when the control parameter exceeds an upper limit value or is lower than a lower limit value, adjustment delay occurs, and the control parameter can be adjusted to be within the deviation range of the threshold value within a long time is solved. Because the deviation upper limit value or the deviation lower limit value is used for controlling, the motion states of the feeder and the V-shaped fire grate are calculated and controlled according to the PID, compared with a mode of directly controlling parameters, the correction is simpler and more convenient, the combustion stability of the incinerator is easier to control, and the coming and burning efficiency is improved.

The garbage in the V-shaped grate can be uniformly distributed on the V-shaped grate through the control method, the stirring effect is excellent, the temperature of the flue gas above the V-shaped grate after 2 seconds of movement can reach 950-1050 ℃, the temperature far exceeds the specified 850 ℃, the generation of dioxin is effectively reduced, and the discount rate can be controlled below 3%. Due to the comprehensive particularity of the inclination angle and the length of the V-shaped fire grate and the structure of the fire grate pieces, the V-shaped fire grate is more convenient and efficient when the combustion of the V-shaped fire grate is controlled relative to other fire grates.

In some embodiments, the control parameters include steam flow and/or oxygen; the threshold setting step is as follows: setting a combustion threshold value of the steam flow according to a daily production steam flow curve, and setting a combustion threshold value of the oxygen according to a daily production oxygen curve; the parameter acquisition step comprises the following steps: the steam flow is collected in real time through a steam flow meter arranged in the V-shaped grate, and the oxygen amount is collected through an oxygen meter arranged in the V-shaped grate. The embodiment needs to utilize the sectional control of the V-shaped fire grate, combines the characteristic of the reverse inclination of the V-shaped incinerator, and can prevent garbage from sliding down and stir the garbage more thoroughly, so that the garbage is combusted more fully. The embodiment can respectively carry out motion control on each V-shaped grate unit, and the start-stop state of the grate is changed according to the parameter deviation value of the required steam flow, the inlet temperature of the second flue or the oxygen quantity of the outlet of the economizer, so that the combustion working condition in the furnace is controlled, and the steam flow, the inlet temperature of the second flue or the oxygen quantity of the outlet of the economizer are stabilized in the required numerical range. In the embodiment shown in fig. 2, the uppermost curve is a daily production steam flow curve, the middle curve is a parameter deviation curve, the lowermost curve is a fire grate start-stop signal, each V-shaped fire grate unit can be independently controlled, and the combustion flow field of the incinerator is finely adjusted by adjusting the steam flow, so that the stable combustion condition in the incinerator is facilitated, the heat exchange efficiency of the incinerator is improved, and the hot ignition reduction rate is reduced.

It is worth mentioning that the control parameters also include IR temperature; the threshold setting step is as follows: setting a combustion threshold value of the second flue inlet temperature according to a daily production IR temperature curve; the parameter acquisition step comprises the following steps: and acquiring the IR temperature in real time through a temperature sensor arranged at the inlet of a second flue of the V-shaped grate. In the embodiment shown in fig. 3, the parameter adjustment is more sensitive when controlling IR temperature than when controlling steam flow, and when the control parameter is IR temperature, the IR temperature setpoint is modified based on the IR temperature moving average time. The time for controlling the fire grate to act by carrying out automatic combustion through the IR temperature is shorter and the acting times are more compared with the time for controlling the fire grate to act once under the steam flow control.

Optionally, before the threshold setting step, a mode selection step is further included, where the mode selection step is: presetting a first mode, a second mode and a third mode; setting the highest priority of the first mode, the second mode and the third mode, wherein when the first mode is set as the highest priority, the control parameter is the steam flow, when the second mode is set as the highest priority, the control parameter is the IR temperature, and when the third mode is set as the highest priority, the control parameter is the oxygen amount. The three modes of steam flow, second flue inlet temperature and oxygen amount can adopt different control modes according to different requirements of the incinerator when the incinerator is in steady-state operation, so that the control method can adapt to different occasions.

Preferably, the operation adjusting step further comprises: and deriving the parameter deviation curve to obtain the slope of the parameter deviation curve at the current time. The slope represents the amount of inclination of a tangent to a curve with respect to the coordinate axis, and the slope of the curve is derived from an equation for the curve. As shown in fig. 2 and 3, the parameter deviation changes in an upward trend when the slope is greater than zero, and in a downward trend when the slope is less than zero. When the slope of the parameter deviation curve at the current moment is larger than zero and reaches the deviation upper limit value or the deviation lower limit value, the parameter deviation is shown to reach the deviation upper limit value or the deviation lower limit value in an upward trend, and the V-shaped grate and/or the feeder are/is stopped; and when the slope of the parameter deviation curve at the current moment is larger than zero and reaches the upper deviation limit value or the lower deviation limit value, the parameter deviation is shown to reach the upper deviation limit value or the lower deviation limit value in a downward trend, and the V-shaped grate and/or the feeder are/is started.

A V-shaped grate type garbage incinerator automatic combustion system comprises a threshold setting module, a deviation setting module, a parameter acquisition module and an operation adjusting module; the threshold setting module is used for making a combustion threshold of the control parameter according to the daily production curve; the deviation setting module is used for presetting a deviation upper limit value and a deviation lower limit value between the control parameter and the combustion threshold value; the parameter acquisition module is used for acquiring control parameters in production in real time through the sensor assembly; the combustion control system is also used for comparing the control parameter with the combustion threshold value to obtain parameter deviation and forming a parameter deviation curve in real time according to the parameter deviation; the operation adjusting module is used for stopping the V-shaped fire grate and/or stopping the feeder when the parameter deviation reaches the deviation upper limit value or deviation lower limit value in an upward trend; and the V-shaped grate and/or the feeder are/is started when the parameter deviation reaches the deviation upper limit value or deviation lower limit value in a downward trend.

Notably, the control parameters include steam flow and/or oxygen; the threshold setting module is specifically used for setting a combustion threshold of the steam flow according to a daily production steam flow curve and setting a combustion threshold of the oxygen amount according to a daily production oxygen amount curve; the parameter acquisition module is specifically used for acquiring the steam flow in real time through a steam flow meter arranged in the V-shaped grate and is also used for acquiring the oxygen content through an oxygen meter arranged in the V-shaped grate.

In some embodiments, the control parameter further comprises an IR temperature; the threshold setting module is specifically used for setting a combustion threshold of the second flue inlet temperature according to a daily production IR temperature curve; the parameter acquisition module is specifically used for acquiring the IR temperature in real time through a temperature sensor arranged at the inlet of a second flue of the V-shaped grate.

Specifically, the mobile terminal further comprises a mode selection module, wherein the mode selection module is used for presetting a first mode, a second mode and a third mode; and the control parameter is the steam flow when the first mode is set to be the highest priority, the control parameter is the IR temperature when the second mode is set to be the highest priority, and the control parameter is the oxygen amount when the third mode is set to be the highest priority.

Preferably, the operation adjusting module is further configured to derive the parameter deviation curve to obtain a slope of the parameter deviation curve at the current time.

In the description herein, references to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.

In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art within the scope of the present invention.