CN119533124A

CN119533124A - Constant temperature control system and method of electric roller kiln based on mixed use of multiple energy sources

Info

Publication number: CN119533124A
Application number: CN202510097313.1A
Authority: CN
Inventors: 王东阳; 向细良; 黄高; 刘维民
Original assignee: Tianxin Technology Co ltd
Current assignee: Tianxin Technology Co ltd
Priority date: 2025-01-22
Filing date: 2025-01-22
Publication date: 2025-02-28
Anticipated expiration: 2045-01-22
Also published as: CN119533124B

Abstract

The invention discloses an electric firing roller kiln constant temperature control system and method based on multi-energy mixed use, and relates to the technical field of kilns. The constant temperature control system of the electric firing roller kiln based on the multi-energy mixed use comprises an electric firing roller kiln temperature detection module, a constant temperature dynamic control module, a multi-energy proportion regulation and control module and an automatic temperature control module. According to the invention, the temperature analysis of the electric firing roller kiln is obtained to obtain the adjustment temperature difference and judge whether to perform constant temperature control, then the temperature control grade is obtained through the temperature difference analysis coefficient of the electric firing roller kiln, heat energy supply is performed according to the adjustment temperature difference, meanwhile, the constant temperature proportion obtained by combining the heat energy data with the preset proportion and the adjustment temperature difference accords with the evaluation coefficient to perform proportion adjustment, finally, the energy supply is automatically switched according to the stage division evaluation coefficient, the effect of improving the constant temperature control accuracy of the electric firing roller kiln for multi-energy mixed use is achieved, and the problem of inaccurate constant temperature control of the electric firing roller kiln for multi-energy mixed use in the prior art is solved.

Description

Constant temperature control system and method for electric firing roller kiln based on multi-energy mixed use

Technical Field

The invention relates to the technical field of kilns, in particular to an electric firing roller kiln constant temperature control system and method based on multi-energy mixed use.

Background

In the ceramic tile production industry, the electric firing roller kiln is used as key equipment and plays an important role in the ceramic tile sintering link. The electric firing roller kiln takes electric energy as a main energy source, and the rotation of the roller rod drives the ceramic tile blank body to move in the kiln, so that a continuous sintering process is realized. The ceramic tile production line has the advantages of being uniform in temperature distribution, high in automation degree, high in production efficiency and the like, and can meet the requirements of large-scale ceramic tile production. In the aspect of temperature control, a simpler temperature control system is generally adopted in the traditional electrically-fired roller kiln, and the power of a heating element is regulated by virtue of a temperature controller mainly through setting fixed temperature parameters so as to maintain the temperature in the kiln. However, this control method exposes problems when faced with complex production conditions and multi-energy mixed use scenarios. Because the electric firing roller kiln is influenced by various factors such as environmental factors (such as environmental temperature and humidity changes), material characteristics (different blank materials and water contents), equipment self-loss and the like in the operation process, the temperature in the kiln is easy to fluctuate. Meanwhile, when auxiliary energy sources such as solar energy, wind energy and the like are introduced to be mixed with the electric energy for use, the dynamic response characteristics and the heat supply efficiency of different energy sources are obviously different. For example, solar energy is limited by illumination intensity and time, its energy output is unstable, wind energy is influenced by wind speed, its energy output is unstable, and the supply of wind energy may be influenced by climate conditions. When the energy sources are switched or cooperatively used, the traditional control system is difficult to accurately coordinate the proportion of each energy source, so that the constant temperature control of the electric firing roller kiln for mixed use of multiple energy sources is inaccurate, and the product quality and the energy source utilization efficiency of the ceramic tile are further affected. This not only increases the production cost, but also places restrictions on the green sustainable development of the ceramic industry.

For example, the patent application publication No. CN118328724A discloses a control method and system for a constant temperature kiln, which comprises the steps of calculating the heat required by the kiln to reach a set temperature and the required fuel quantity in the kiln temperature rising stage, calculating the combustion-supporting air quantity according to the required heat and the fuel quantity, controlling the combustion equipment and the transported fuel quantity of each channel to enable the kiln to reach the set temperature, calculating the heat required by sintering and the required fuel quantity in the material sintering stage, calculating the combustion-supporting air quantity according to the required heat and the fuel quantity, and controlling the combustion equipment and the transported fuel quantity of each channel to enable the materials to be sintered to obtain products.

For example, the wall bricks, kiln and kiln temperature control system of the invention patent publication No. CN117249685B comprises a brick body and a connecting piece. The inside of the brick body is provided with a medium channel, and the medium channel at least comprises two ports. The connecting piece corresponds to two ports of the medium channel one by one, the connecting piece comprises a connecting channel, a flexible sealing part and a traction assembly, the connecting channel is at least partially inserted into the port of the medium channel, the extruding part is arranged on the peripheral wall of the connecting channel around the axis of the connecting channel, the extruding part protrudes out of the peripheral wall of the connecting channel, the flexible sealing part is connected with the connecting channel, the connecting part of the flexible sealing part and the connecting channel is positioned on one side of the extruding part away from the port of the medium channel, and the flexible sealing part is partially clamped between the extruding part and the inner peripheral wall of the medium channel.

However, in the process of implementing the technical scheme of the embodiment of the application, the application discovers that the above technology has at least the following technical problems:

In the prior art, as different energy sources have different dynamic response characteristics and heat supply efficiency, unbalance is easy to occur during switching or cooperative use, and the problem of inaccurate constant temperature control of the electric firing roller kiln for mixed use of multiple energy sources exists.

Disclosure of Invention

The embodiment of the application solves the problem of inaccurate constant temperature control of the multi-energy mixed electric firing roller kiln in the prior art by providing the constant temperature control system and the constant temperature control method of the multi-energy mixed electric firing roller kiln, and realizes the improvement of the constant temperature control accuracy of the multi-energy mixed electric firing roller kiln.

The embodiment of the application provides an electric heating roller kiln constant temperature control system based on multi-energy hybrid use, which comprises an electric heating roller kiln temperature detection module, a constant temperature dynamic control module, a multi-energy proportion regulation module and an automatic temperature control module, wherein the electric heating roller kiln temperature detection module is used for acquiring the temperature of each preset deployment position of a preset time point of the electric heating roller kiln, analyzing to obtain corresponding adjustment temperature difference so as to judge whether constant temperature control is carried out, the constant temperature dynamic control module is used for obtaining an electric heating roller kiln temperature difference analysis coefficient through the adjustment temperature difference of each preset deployment position and external data, obtaining a temperature control grade according to the electric heating roller kiln temperature difference analysis coefficient, the electric heating roller kiln temperature difference analysis coefficient is used for comprehensively reflecting the temperature change stability degree of the electric heating roller kiln, the multi-energy proportion regulation module is used for carrying out heat energy supply according to the temperature control grade and acquiring heat energy data, the acquired heat energy data is combined with preset proportion coincidence assessment coefficients, the constant temperature proportion coincidence assessment coefficients are obtained based on the constant proportion coincidence assessment coefficients, the constant temperature proportion coincidence coefficients are used for carrying out constant temperature proportion adjustment, the constant proportion coincidence coefficients are used for the preset proportion control, the constant temperature proportion coincidence coefficients are obtained by the preset proportion coincidence coefficients, the automatic proportion control coefficients are used for the preset proportion control, the temperature control coefficients are used for judging the temperature control stage-by the temperature control coefficient and the temperature control coefficient is divided by the temperature control data, the temperature control stage is used for obtaining the temperature control coefficient, and the temperature control stage control data is used for judging temperature control stage and is used for judging temperature control based on the temperature control stage by the temperature control data, and the temperature control stage and temperature control stage and temperature control module is used for judging temperature control, the reference judgment data comprise temperature deviation and preset fault-tolerant proportion, the adjustment temperature difference of each preset deployment position is compared with the temperature deviation in sequence, the preset deployment position is marked as 1 if the adjustment temperature difference is not larger than the temperature deviation, the adjustment temperature difference represents the difference between the temperature of each preset deployment position and the preset constant temperature, the preset deployment position is marked as 0 if the adjustment temperature difference is larger than the temperature deviation, the number of the preset deployment positions marked as 0 is counted, the counted result is combined with the total number of the preset deployment positions to obtain constant temperature runaway point proportion, the constant temperature runaway point proportion is represented by the ratio of the counted result to the total number of the preset deployment positions, the constant temperature runaway point proportion is compared with the preset fault-tolerant proportion, constant temperature control is not carried out if the constant temperature runaway point proportion is not larger than the preset fault-tolerant proportion, and the function of the constant temperature dynamic control module is executed if the constant temperature runaway point proportion is larger than the preset fault-tolerant proportion.

Further, the external data comprise ambient temperature, ambient humidity, supply rate and system response speed, the heat energy data comprise temperature change rate, solar energy consumption, wind energy consumption and electric energy consumption, and the kiln temperature data comprise kiln inner temperature, temperature change rate, heat source output power and kiln inner pressure.

The specific acquisition process of the temperature difference analysis coefficient of the electric-burn roller kiln comprises the steps of numbering preset time points and preset deployment positions respectively, acquiring reference external data from a preset database, wherein the reference external data comprises preset constant temperature, average humidity, maximum supply rate and minimum supply rate, acquiring an external adjustment coefficient according to the external data and the reference external data, wherein the external adjustment coefficient is used for quantifying the influence of external factors on constant temperature control, preprocessing the response speed of the system, normalizing the response speed of the system, acquiring an adjustment temperature difference and combining the external adjustment coefficient to obtain the temperature difference analysis coefficient of the electric-burn roller kiln.

The method comprises the steps of obtaining a constant temperature proportion according with an evaluation coefficient, obtaining a preset proportion corresponding to the heat energy and corresponding heat energy data, assigning a use mark coefficient to all the heat energy based on a temperature control level, obtaining total energy consumption through the heat energy data and the corresponding use mark coefficient, obtaining a reference temperature change rate from a preset database, and obtaining the constant temperature proportion according with the evaluation coefficient by combining the heat energy data and the preset proportion.

Further, the specific constraint expression of the constant temperature ratio according to the evaluation coefficient is as follows: Wherein t represents the number of a preset time point, ,The total number of preset time points is indicated,Represents the solar energy consumption at the t-th preset time point,Represents the amount of wind energy consumed at the t-th preset point in time,Represents the amount of electric power consumption at the t-th preset time point,Indicating the usage index corresponding to the solar energy consumption amount at the t-th preset time point,Indicating the corresponding usage index of the wind energy consumption at the t-th preset time point,Indicating the usage index corresponding to the amount of power consumption at the t-th preset time point,The temperature change rate at the t-th preset time point is represented,Indicating the rate of change of the reference temperature,Indicating the total energy consumption at the t-th preset time point,The preset proportion is indicated to be the same as the preset proportion,Indicating that the constant temperature ratio at the t-th preset time point meets the evaluation coefficient.

The specific process of proportion adjustment based on the constant-temperature proportion coincidence assessment coefficient comprises the steps of obtaining a proportion assessment threshold value from a preset database and comparing the proportion assessment threshold value with the constant-temperature proportion coincidence assessment coefficient, if the constant-temperature proportion coincidence assessment coefficient is not smaller than the proportion assessment threshold value, not carrying out proportion adjustment, if the constant-temperature proportion coincidence assessment coefficient is smaller than the proportion assessment threshold value, carrying out proportion adjustment, constructing a proportion adjustment mapping set of proportion coincidence difference and adjustment force proportion, wherein the proportion coincidence difference represents a difference value between the constant-temperature proportion coincidence assessment coefficient and the proportion assessment threshold value, obtaining corresponding adjustment force proportion from the proportion adjustment mapping set, and adjusting the preset proportion according to the corresponding adjustment force proportion.

The method comprises the steps of obtaining reference kiln temperature data from a preset database, preprocessing the kiln temperature data, obtaining a kiln temperature coefficient by obtaining preset constant temperature and combining the kiln temperature data and the reference kiln temperature data, wherein the kiln temperature coefficient comprises a temperature coefficient, a temperature change rate coefficient, a heat source output power coefficient and a kiln internal pressure coefficient, and obtaining the stage division evaluation coefficient by summing the kiln temperature coefficient.

The method comprises the steps of obtaining a stage division section from a preset database, wherein the stage division section comprises a starting section, a heating section, a constant temperature section and a cooling section, automatically switching the heat supply energy according to a preset supply rule to adapt to the starting stage of the electric heating roller kiln if the stage division evaluation coefficient is in the range of the starting section, wherein the preset supply rule comprises a preset proportion and a corresponding heat supply energy, automatically switching the heat supply energy according to the preset supply rule to adapt to the heating stage of the electric heating roller kiln if the stage division evaluation coefficient is in the range of the heating section, automatically switching the heat supply energy according to the preset supply rule to adapt to the constant temperature stage of the electric heating roller kiln if the stage division evaluation coefficient is in the range of the constant temperature section, and automatically switching the heat supply energy according to the preset supply rule to adapt to the cooling stage of the electric heating roller kiln if the stage division evaluation coefficient is in the range of the cooling section.

The embodiment of the application provides an electric-heating roller kiln constant-temperature control method based on multi-energy hybrid use, which comprises the steps of acquiring temperatures of preset deployment positions of an electric-heating roller kiln preset time point, obtaining corresponding adjustment temperature differences through analysis to judge whether constant-temperature control is carried out, obtaining electric-heating roller kiln temperature difference analysis coefficients through the adjustment temperature differences of the preset deployment positions and external data, obtaining temperature control grades according to the electric-heating roller kiln temperature difference analysis coefficients, wherein the electric-heating roller kiln temperature difference analysis coefficients are used for comprehensively reflecting the temperature difference change stability degree of the electric-heating roller kiln, supplying heat energy according to the temperature control grades and acquiring heat energy data, obtaining a constant-temperature proportion coincidence evaluation coefficient by combining the acquired heat energy data with preset proportions and the adjustment temperature differences, carrying out proportion adjustment based on the constant-temperature proportion coincidence evaluation coefficients, combining the acquired kiln temperature data and the heat energy data to obtain a stage division evaluation coefficient, automatically switching the energy supply based on the stage division evaluation coefficient, the stage division evaluation coefficient is used for judging whether the constant-temperature control of the electric-heating roller kiln is stable or not, if the temperature difference of the preset temperature difference is larger than the preset temperature difference of the preset deployment position is equal to the preset temperature difference, and the preset temperature difference is equal to the preset temperature difference of the preset position, if the preset temperature difference is not equal to the preset temperature difference is equal to the preset by the preset temperature difference, and the preset temperature difference is equal to the preset value, and the preset temperature is equal to the preset temperature value, and the temperature difference is sequentially, and the temperature difference is compared, and the temperature difference is 1, the method comprises the steps of marking the preset deployment position as 0, counting the number of the preset deployment positions marked as 0, combining a counted result with the total number of the preset deployment positions to obtain a constant-temperature out-of-control point proportion, wherein the constant-temperature out-of-control point proportion is represented by the ratio of the counted result to the total number of the preset deployment positions, comparing the constant-temperature out-of-control point proportion with a preset fault-tolerant proportion, if the constant-temperature out-of-control point proportion is not larger than the preset fault-tolerant proportion, not performing constant-temperature control, and if the constant-temperature out-of-control point proportion is larger than the preset fault-tolerant proportion, executing the function of a constant-temperature dynamic control module.

One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages:

1. the temperature difference and the external data are adjusted to obtain the temperature control grade, the heat energy supply is carried out according to the temperature control grade, the heat energy data are simultaneously obtained, then the obtained heat energy data are combined with the preset proportion and the adjusted temperature difference to obtain the constant-temperature proportion to be in line with the evaluation coefficient so as to carry out proportion adjustment, finally the kiln temperature data and the heat energy data which are obtained in real time are combined to obtain the stage division evaluation coefficient and the energy supply is automatically switched according to the stage division evaluation coefficient, so that the dynamic regulation and control automation of the multi-energy hybrid control is realized, the accuracy of the constant-temperature control of the multi-energy hybrid electric kiln is improved, and the problem that the constant-temperature control of the multi-energy hybrid electric kiln in the prior art is inaccurate is effectively solved.

2. The preset time point and the preset deployment position are respectively numbered, reference external data are acquired from a preset database, then external adjustment coefficients are obtained according to the external data and the reference external data, the response speed of the system is preprocessed, and finally the adjustment temperature difference is acquired and combined with the external adjustment coefficients to obtain the temperature difference analysis coefficients of the electric firing roller kiln, so that the temperature condition of the electric firing roller kiln is estimated more accurately, and further the more accurate constant temperature control of the electric firing roller kiln is realized.

3. The heat energy sources are numbered according to the types of the heat energy sources, the corresponding preset proportion of the heat energy sources and the corresponding heat energy source data are obtained, then the using marking coefficients are assigned to all the heat energy sources based on the temperature control grade, then the total energy consumption is obtained through the heat energy source data and the corresponding using marking coefficients, the reference temperature change rate is obtained from the preset database, and finally the constant temperature proportion coincidence assessment coefficient is obtained by combining the heat energy source data and the preset proportion, so that the coincidence degree of each heat energy source proportion is assessed more accurately, and the proportion of the heat energy sources is regulated and controlled more accurately.

Drawings

Fig. 1 is a schematic structural diagram of an electric firing roller kiln constant temperature control system based on multi-energy hybrid use provided by an embodiment of the application;

Fig. 2 is a schematic diagram of a change of a stage division evaluation coefficient according to an embodiment of the present application.

Detailed Description

In the embodiment, the electric firing roller kiln is used as key equipment for ceramic tile sintering, is tightly connected with four core modules in the technology, and realizes accurate constant temperature control through data interaction and instruction transmission. The connection relationship between each module and the electric firing roller kiln will be described in detail in terms of data flow direction, control command transmission and the like.

And the electric firing roller kiln temperature detection module is directly connected with the electric firing roller kiln through a temperature sensor. The temperature sensors are arranged at preset deployment positions of the electric firing roller kiln, and the representativeness of the temperature distribution in the kiln is fully considered by selecting the positions, including different areas, positions close to the heating element, key positions where the ceramic tile blank passes, and the like. The sensor acquires temperature data of the electric-burning roller kiln at a preset time point in real time and transmits the temperature data to the electric-burning roller kiln temperature detection module. The module analyzes and processes the received data and calculates the adjustment temperature difference between the temperature of each preset deployment position and the preset constant temperature. And according to the adjustment temperature difference, the module further judges whether the constant temperature control flow is required to be started for the electric firing roller kiln. The connection provides a real-time and key temperature data base for the whole constant temperature control system, and is an important precondition for follow-up accurate control.

The constant temperature dynamic control module is connected with the electric firing roller kiln, and the constant temperature dynamic control module is indirectly driven by multiple data sources. On one hand, the constant temperature dynamic control module receives adjustment temperature difference data from the electric firing roller kiln temperature detection module, and the data reflect the deviation condition of the current temperature of the electric firing roller kiln and the preset constant temperature. On the other hand, the constant temperature dynamic control module acquires external data such as the ambient temperature, the humidity, the supply rate, the system response speed and the like through equipment such as an ambient sensor, a dynamic analyzer and the like. And combining the adjustment temperature difference with external data, calculating a temperature difference analysis coefficient of the electric firing roller kiln by using a specific algorithm, and determining the temperature control grade according to the temperature difference analysis coefficient. The temperature control level information is then transmitted to the multi-energy proportional control module as an important basis for adjusting the energy supply strategy. The constant temperature dynamic control module plays a key role in data fusion and analysis in the whole system, and provides core control parameters for realizing accurate constant temperature control.

The connection between the multi-energy proportional control module and the electric firing roller kiln is mainly realized in two aspects of energy supply and data feedback. In the aspect of energy supply, the module sends instructions to energy supply equipment such as solar energy, wind energy, electric energy and the like of the electric firing roller kiln according to the temperature control level provided by the constant temperature dynamic control module, and the supply proportion of different energy sources is accurately adjusted. When the temperature control level requires to increase heat, the module may increase the supply proportion of electric energy, and simultaneously reasonably allocate the supply of solar energy and wind energy. In the aspect of data feedback, the multi-energy proportion regulation and control module acquires heat energy data such as solar energy consumption, wind energy consumption, electric energy consumption, temperature change rate and the like in real time through heat energy detection equipment such as a temperature sensor, a solar energy power meter and an electric energy meter. The data not only reflects the actual use condition of the energy, but also provides basis for the module to further optimize the energy supply strategy, and ensures that the energy supply is matched with the actual temperature requirement of the electric roller kiln.

The automatic temperature control module and the electric firing roller kiln are in bidirectional connection. The automatic temperature control module acquires kiln temperature data of the electrically-fired roller kiln in real time, wherein the kiln temperature data comprises kiln temperature, temperature change rate, heat source output power, kiln internal pressure and the like, and simultaneously receives heat energy data provided by the multi-energy proportion control module. The two types of data are combined, and the automatic temperature control module calculates a stage division evaluation coefficient through a specific algorithm, so that the temperature control stage of the electric firing roller kiln, such as a starting stage, a heating stage, a constant temperature stage or a cooling stage, is judged. Based on the judgment of the temperature control stage, the automatic temperature control module sends an energy switching instruction to energy supply equipment of the electric firing roller kiln, so that automatic adjustment of energy supply is realized. In the starting stage, the module adjusts the energy supply proportion and type according to a preset supply rule so as to meet the special requirements of the starting stage. Along with the change of the operation stage of the electric firing roller kiln, the automatic temperature control module continuously monitors and adjusts the energy supply, ensures that the temperature in the kiln is always stable, and realizes high-efficiency and accurate constant-temperature control.

According to the embodiment of the application, the problem of inaccurate constant temperature control of the electric kiln based on multi-energy mixed use is solved by providing the constant temperature control system and the constant temperature control method of the electric kiln based on the multi-energy mixed use in the prior art, the temperature analysis of each preset deployment position of the electric kiln is obtained to obtain the adjustment temperature difference so as to judge whether constant temperature control is carried out, the preset time point and the preset deployment position are respectively numbered, the reference external data is obtained from the preset database, the external adjustment coefficient is obtained according to the external data and the reference external data, the response speed of the system is preprocessed, the adjustment temperature difference is obtained and the temperature analysis coefficient of the electric kiln is obtained by combining the external adjustment coefficient, the heat energy is numbered according to the category of the heat energy, the preset proportion corresponding to the heat energy and the corresponding heat energy data are obtained based on the temperature control level, the total energy consumption is obtained through the heat energy data and the corresponding use mark coefficient, the reference temperature change rate is obtained from the preset database, the heat energy data and the preset proportion is obtained according to the constant temperature adjustment coefficient, the automatic proportion is obtained according to the temperature adjustment coefficient, the temperature evaluation is carried out, and the temperature evaluation data is supplied to the mixed energy is evaluated, and the temperature evaluation is carried out, and the accuracy of the mixed energy is improved.

The technical scheme in the embodiment of the application aims to solve the problem of inaccurate constant temperature control of the electric firing roller kiln for the mixed use of multiple energy sources, and the overall thought is as follows:

The temperature analysis of the electric firing roller kiln is obtained to obtain an adjustment temperature difference and judge whether to perform constant temperature control, then the temperature control grade is obtained through the temperature difference analysis coefficient of the electric firing roller kiln, heat energy supply is performed according to the temperature control grade, meanwhile, the constant temperature proportion is obtained by combining the preset proportion and the adjustment temperature difference to be in accordance with the evaluation coefficient for proportion adjustment, finally, the energy supply is automatically switched according to the obtained stage division evaluation coefficient, and the effect of improving the constant temperature control accuracy of the electric firing roller kiln for multi-energy mixed use is achieved.

In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.

The electric heating roller kiln constant temperature control system based on the multi-energy mixed use provided by the embodiment of the application comprises an electric heating roller kiln temperature detection module, a constant temperature dynamic control module, a multi-energy proportion regulation module and an automatic temperature control module, wherein the electric heating roller kiln temperature detection module is used for acquiring the temperature of each preset deployment position of a preset time point of the electric heating roller kiln, corresponding adjustment temperature differences are obtained through analysis to judge whether constant temperature control is carried out or not, the constant temperature dynamic control module is used for obtaining an electric heating roller kiln temperature difference analysis coefficient through the adjustment temperature differences of each preset deployment position and external data, a temperature control grade is obtained according to the electric heating roller kiln temperature difference analysis coefficient, the electric heating roller kiln temperature difference analysis coefficient is used for comprehensively reflecting the temperature change stability degree of the electric heating roller kiln, the multi-energy proportion regulation module is used for carrying out heat energy supply according to the temperature control grade and acquiring heat energy data, the acquired heat energy data are combined with preset proportion and adjustment temperature difference coefficient, the constant proportion is matched with the constant temperature proportion coefficient is obtained through the adjustment temperature proportion, the temperature proportion is matched with the automatic temperature control coefficient is evaluated by the temperature proportion evaluation coefficient, the temperature proportion is evaluated by the temperature control coefficient is divided, and the temperature proportion is evaluated by the temperature proportion evaluation coefficient is evaluated by the temperature proportion, and the temperature control coefficient is evaluated by the temperature proportion and the temperature control coefficient.

In the embodiment, the specific process of obtaining the temperature control grade according to the temperature difference analysis coefficient of the electric firing roller kiln is that the temperature control interval is obtained from a preset database, the temperature control interval comprises a starting temperature control interval, a rising temperature control interval, a constant temperature control interval and a cooling temperature control interval, if the temperature difference analysis coefficient of the electric firing roller kiln belongs to the starting temperature control interval, the temperature control grade of the electric firing roller kiln at the current preset time point is a first temperature control grade, if the temperature difference analysis coefficient of the electric firing roller kiln belongs to the rising temperature control interval, the temperature control grade of the electric firing roller kiln at the current preset time point is a second temperature control grade, if the temperature difference analysis coefficient of the electric firing roller kiln belongs to the constant temperature control interval, the temperature control grade of the electric firing roller kiln at the current preset time point is a third temperature control grade, if the temperature difference analysis coefficient of the electric firing roller kiln belongs to the cooling temperature control interval, the temperature control grade of the electric firing roller kiln at the current preset time point is a fourth temperature control grade, the temperature control grade comprises the first temperature control grade, the second temperature control grade, the third temperature control grade and the fourth temperature control grade, and the temperature control grade of the electric firing roller kiln at the current preset time point is a temperature control grade, and the electric firing roller kiln can be controlled by a synergistic system.

Specifically, the temperature control interval is obtained from a preset database. In a specific embodiment, substituting external data in a starting stage in historical data into a specific limiting expression of an electric firing roller kiln temperature difference analysis coefficient to obtain a corresponding data set, carrying out mean value operation on the data set to obtain a first temperature control mean value, substituting external data in a rising stage in the historical data into the specific limiting expression of the electric firing roller kiln temperature difference analysis coefficient to obtain a corresponding data set, carrying out mean value operation on the data set to obtain a second temperature control Wen Junzhi, substituting external data in a constant temperature stage in the historical data into the specific limiting expression of the electric firing roller kiln temperature difference analysis coefficient to obtain a corresponding data set, carrying out mean value operation on the data set to obtain a third temperature control mean value, defining a range from 0 to the first temperature control mean value as a starting temperature control interval, wherein a range from the first temperature control mean value to the second temperature control mean value Wen Junzhi is a rising temperature control interval, and a range from the second temperature control mean value to the third temperature control mean value is a constant temperature control interval, otherwise, and the range from the second temperature control mean value to the third temperature control mean value is a cooling temperature control interval.

It is added that the external data comprise ambient temperature, ambient humidity, supply rate and system response speed, the heat energy data comprise temperature change rate, solar energy consumption, wind energy consumption and electric energy consumption, and the kiln temperature data comprise kiln inner temperature, temperature change rate, heat source output power and kiln inner pressure.

The external data are measured through corresponding environment sensors, the environment sensors comprise environment temperature sensors, humidity sensors and flow sensors, the response speed of the system is obtained through a dynamic analyzer, the heat energy data are collected through heat energy detection equipment, the heat energy detection equipment comprises temperature sensors, solar energy power meters and electric energy meters, the temperature change rate is measured through the temperature sensors, the wind energy consumption is obtained through the wind driven generator, the solar energy consumption is measured through the solar energy power meters, the electric energy consumption is measured through the electric energy meters, the kiln temperature data are obtained through corresponding kiln temperature detection instruments, the kiln temperature detection instruments comprise thermocouples, data recorders, power meters and pressure difference meters, the temperature change rate represents the relative deviation of the kiln temperature at two adjacent preset time points, the heat source output power is measured through the power meters, the kiln internal pressure is measured through the pressure difference meters, the kiln temperature is controlled through the collected and processed various external data, the heat energy data and the kiln temperature data, and the kiln temperature data are controlled through constant temperature, and the roller table is provided.

Further, the specific process of judging whether to perform the constant temperature control is that reference judgment data are obtained from a preset database, the reference judgment data comprise temperature deviation and preset fault-tolerant proportion, the adjustment temperature difference of each preset deployment position is sequentially compared with the temperature deviation, the preset deployment position is marked as 1 if the adjustment temperature difference is not larger than the temperature deviation, the adjustment temperature difference represents the difference between the temperature of each preset deployment position and the preset constant temperature, the preset deployment position is marked as 0 if the adjustment temperature difference is larger than the temperature deviation, the number of the preset deployment positions marked as 0 is counted, the counted result is combined with the total number of the preset deployment positions to obtain a constant temperature control point proportion, the constant temperature control point proportion is represented by the ratio of the counted result to the total number of the preset deployment positions, the constant temperature control point proportion is compared with the preset fault-tolerant proportion, if the constant temperature control point proportion is not larger than the preset fault-tolerant proportion, and the function of a constant temperature dynamic control module is executed.

In the embodiment, by comparing and adjusting the temperature difference and the temperature deviation and combining the judgment of the constant temperature out-of-control point proportion and the preset fault tolerance proportion, whether the constant temperature control of the electric firing roller kiln needs to be executed or not can be judged more accurately, and by adopting the method, the misjudgment possibly caused by the judgment of a single temperature point is avoided, and the accuracy and the reliability of the judgment are improved

Specifically, the reference judgment data is obtained from a preset database. In a specific embodiment, the temperature deviation and the preset fault tolerance ratio are set by a professional electric firing roller kiln worker according to specific production conditions, for example, the temperature deviation can be set to be 20 ℃, and the preset fault tolerance ratio is set to be 5%.

Further, the specific acquisition process of the temperature difference analysis coefficient of the electric firing roller kiln comprises the steps of numbering preset time points and preset deployment positions respectively, acquiring reference external data from a preset database, wherein the reference external data comprises preset constant temperature, average humidity, maximum supply rate and minimum supply rateThe method comprises the steps of obtaining an external adjustment coefficient, carrying out pretreatment on the response speed of a system, carrying out normalization on the response speed of the system, obtaining an adjustment temperature difference and combining the external adjustment coefficient to obtain an electric-burning roller kiln temperature difference analysis coefficient, wherein the specific limit expression of the electric-burning roller kiln temperature difference analysis coefficient is as follows: Wherein t represents the number of a preset time point, ,Represents the total number of preset time points, d represents the number of preset deployment positions,,Representing the total number of preset deployment locations,A number indicating the d-th preset deployment position at the t-th preset time point,,Represents the total number of preset deployment locations at the t-th preset time point,Represents the ambient temperature at the (t) th preset deployment location at the (t) th preset point in time,Represents the ambient humidity at the (t) th preset deployment location at the (t) th preset point in time,Representing the feed rate of the d-th preset deployment position at the t-th preset time point,Representing the system response speed at the nth preset deployment location at the nth preset time point,Represents the adjusted temperature difference at the nth preset deployment location at the nth preset time point,The preset constant temperature is indicated,The average humidity is indicated as being the average humidity,Indicating the maximum value of the feed rate,Indicating a minimum value of the feed rate,Represents the external adjustment factor for the d-th preset deployment position at the t-th preset time point,And the temperature difference analysis coefficient of the electric firing roller kiln at the d preset deployment position at the t preset time point is shown.

In the embodiment, the algorithm combines external data and adjustment temperature difference comprehensive analysis to obtain the temperature difference analysis coefficient of the electric-burn roller kiln, wherein the corresponding temperature difference analysis coefficient of the electric-burn roller kiln is increased along with the decrease of the adjustment temperature difference and the increase of the external adjustment coefficient, wherein the external adjustment coefficient is influenced by the environment temperature, the environment humidity, the supply rate and the system response speed, when the supply rate is between the minimum value and the maximum value of the supply rate, the corresponding external adjustment coefficient is larger, when the environment temperature is closer to the preset constant temperature, the corresponding external adjustment coefficient is larger, when the environment humidity is closer to the average humidity, the corresponding external adjustment coefficient is larger, in addition, the corresponding external adjustment coefficient is larger, the influence of the external factor on the constant temperature control is smaller, and the heating condition of the electric-burn roller kiln is analyzed more accurately by comprehensively considering the adjustment temperature difference and the external adjustment coefficient, so that the accuracy of the constant temperature control of the electric-burn roller kiln is improved in time.

Specifically, the reference external data is acquired from a preset database. In a specific embodiment, the preset constant temperature, the maximum supply rate and the minimum supply rate are set by a professional electric firing roller kiln worker according to specific production conditions, and the average humidity is obtained by carrying out average operation on historical humidity data in the same season.

In particular, the parameters involved in the process of the temperature difference analysis coefficient of the electric firing roller kiln in the algorithm are not independent, wherein the environment temperature and the environment humidity are closely related, the environment humidity in the air can change along with the change of the environment temperature, for example, the saturated vapor pressure of the air is increased when the environment temperature is increased, the same vapor amount can be expressed as lower environment humidity, conversely, the relative humidity is increased when the environment temperature is reduced, the supply rate generally refers to the flow or mass flow of an input substance (such as air, fuel gas, vapor, fuel and the like), and the supply rate can be directly or indirectly influenced by the environment temperature and the environment humidity because the density and the specific volume of the supply substance can change along with the environment condition, and condensation or a water film can be formed on the surface of a pipeline or a sensor when the environment humidity is high, so that the sensitivity of the sensor is reduced, the response time is delayed, and the high environment humidity can influence the fuel or air conveying characteristics to indirectly influence the response speed.

The method comprises the steps of obtaining a constant temperature proportion according with an evaluation coefficient, numbering the heat energy according to the type of the heat energy, obtaining a preset proportion corresponding to the heat energy and corresponding heat energy data, assigning a use mark coefficient to all the heat energy based on a temperature control level, wherein the use mark coefficient of the heat energy corresponding to the temperature control level is marked as 1, the rest heat energy is marked as 0, obtaining total energy consumption through the heat energy data and the corresponding use mark coefficient, obtaining a reference temperature change rate from a preset database, and obtaining the constant temperature proportion according with the evaluation coefficient by combining the heat energy data and the preset proportion.

The specific constraint expression for the constant temperature ratio to meet the evaluation coefficient is as follows: Wherein t represents the number of a preset time point, ,The total number of preset time points is indicated,Represents the solar energy consumption at the t-th preset time point,Represents the amount of wind energy consumed at the t-th preset point in time,Represents the amount of electric power consumption at the t-th preset time point,Indicating the usage index corresponding to the solar energy consumption amount at the t-th preset time point,Indicating the corresponding usage index of the wind energy consumption at the t-th preset time point,Indicating the usage index corresponding to the amount of power consumption at the t-th preset time point,Representing the temperature change rate at the t-th preset time point [ ]),Indicating the rate of change of the reference temperature,Indicating the total energy consumption at the t-th preset time point,The preset proportion is indicated to be the same as the preset proportion,Indicating that the constant temperature ratio at the t-th preset time point meets the evaluation coefficient.

In the embodiment, the algorithm combines heat energy data, a reference temperature change rate and a preset proportion to obtain a constant temperature proportion meeting evaluation coefficient, wherein the preset proportion represents a result of continuous multiplication of the proportion of each heat energy source, in the formula, as the product of multiplication between the ratio of the solar energy consumption, the wind energy consumption and the electric energy consumption to the total consumption respectively approaches 1 and the ratio of the preset proportion, the constant temperature proportion meeting evaluation coefficient is larger, the consumption proportion of each heat energy source is more consistent with the preset proportion, and meanwhile, when the ratio of the temperature change rate to the reference temperature change rate approaches 1, the constant temperature proportion meeting evaluation coefficient is more consistent with the condition of temperature change, the condition of constant temperature change is more standard, and the analysis of the constant temperature proportion meeting evaluation coefficient is beneficial to understanding the condition of constant temperature control of the electric roller kiln, so that corresponding measures are timely taken to improve the control accuracy of the heat energy sources of the multiple energy sources, and meanwhile, the dynamic regulation and control of each heat energy source are realized, and the full utilization of each heat energy source is facilitated.

Specifically, the preset proportion and the reference temperature change rate are obtained from a preset database. In a specific embodiment, the preset ratio and the reference temperature change rate are set by a professional electric kiln operator according to the specific production situation, for example during the temperature rise phase, the reference temperature change rate is typically in the range of 20-50C/min.

Specifically, the correlation between parameters involved in the process of the constant temperature proportion conforming to the evaluation coefficient in the algorithm is not independent, wherein the output of solar energy is unstable, and the fluctuation of the temperature change rate may be caused. The solar energy is usually used as an auxiliary heat source and is matched with other energy sources, the electric energy is usually used for providing heat through an electric heater or induction heating, the response speed is high, the solar energy is an important means for controlling the temperature change rate, and the electric energy is preferentially used as a main heat source in a stage of needing rapid temperature rise so as to realize higher temperature change rate.

Specifically, the specific rule of using the marking coefficient to assign is to assign 1 to the using marking coefficient of the heat energy source used under different temperature control grades, and assign 0 to the using marking coefficient of the heat energy source not used.

Specifically, the specific expression of the sigmoid function is as follows:

;

Wherein, The input of the function is represented as such,Representing the output of the function.

Further, the specific process of proportion adjustment based on the constant-temperature proportion coincidence assessment coefficient comprises the steps of obtaining a proportion assessment threshold value from a preset database and comparing the proportion assessment threshold value with the constant-temperature proportion coincidence assessment coefficient, if the constant-temperature proportion coincidence assessment coefficient is not smaller than the proportion assessment threshold value, not carrying out proportion adjustment, if the constant-temperature proportion coincidence assessment coefficient is smaller than the proportion assessment threshold value, carrying out proportion adjustment, constructing a proportion adjustment mapping set of proportion coincidence difference and adjustment force proportion, wherein the proportion coincidence difference represents a difference value between the constant-temperature proportion coincidence assessment coefficient and the proportion assessment threshold value, obtaining corresponding adjustment force proportion from the proportion adjustment mapping set, and adjusting the preset proportion according to the corresponding adjustment force proportion.

In the embodiment, by constructing the proportion adjustment mapping set, the accurate correspondence between the proportion coincidence difference and the adjustment force proportion is realized, so that the accuracy of proportion adjustment is improved, the adjusted multi-energy supply proportion is ensured to be more in line with the actual demand, and the stability and the efficiency of the temperature control of the electric firing roller kiln are further improved.

Specifically, the ratio evaluation threshold is obtained from a preset database. In a specific embodiment, substituting the heat energy data with the multi-energy proportion not conforming to the temperature condition in the historical data into a specific limiting expression with the constant temperature proportion conforming to the evaluation coefficient to obtain a corresponding data set, and performing average value operation on the data set to obtain a proportion evaluation threshold.

Further, the specific process of the stage division evaluation coefficient comprises the steps of obtaining reference kiln temperature data from a preset database, wherein the reference kiln temperature data comprises average output power and average kiln internal pressure, obtaining the reference kiln temperature data through historical data of constant temperature control of an electric kiln, carrying out data preprocessing on the kiln temperature data, wherein the data preprocessing represents that the kiln temperature data is unitized and unified, obtaining the preset constant temperature and combining the kiln temperature data and the reference kiln temperature data to obtain a kiln temperature coefficient, and the kiln temperature coefficient comprises a temperature coefficient (namely) Coefficient of temperature change (i.e) The heat source output power coefficient (i.e) And the kiln pressure coefficient (i.e) And carrying out summation operation on the kiln temperature coefficient and then processing to obtain a stage division evaluation coefficient, wherein the specific limit expression of the stage division evaluation coefficient is as follows:

Wherein t represents the number of a preset time point, ,The total number of preset time points is indicated,Indicating the temperature in the kiln at the t-th preset point in time,The temperature change rate at the t-th preset time point is represented,Representing the heat source output power at the t-th preset time point,Represents the kiln pressure at the t-th preset time point,Indicating the temperature coefficient at the t-th preset time point,Indicating the temperature change rate coefficient at the t-th preset time point,Representing the heat source output power coefficient at the t-th preset time point,Represents the kiln pressure coefficient at the t-th preset time point,The preset constant temperature is indicated,Which represents the average output power of the device,Represents the average kiln internal pressure,Represents the stepwise evaluation coefficients at the t-th preset time point, e represents the natural constant.

In the embodiment, the algorithm is combined with comprehensive analysis of kiln temperature coefficients to obtain a stage division evaluation coefficient, wherein the stage division evaluation coefficient increases along with the increase of the kiln temperature coefficient and decreases along with the decrease of the kiln temperature coefficient, the kiln temperature coefficient shows a normal distribution trend that the kiln temperature coefficient increases and decreases along with the increase of a preset time point, as shown in fig. 2, fig. 2 is a change schematic diagram of the stage division evaluation coefficient provided by the embodiment of the application, wherein the total number of preset time points is assumed to be 100, the constant temperature is 1200 ℃, the average output power is 50kW, the average kiln internal pressure is 1.0Kpa, the change curves of all the kiln temperature coefficients are made under the same coordinate system, and the corresponding stage division coefficients are obtained according to the values of all the kiln temperature coefficients at the same preset time point, so that the change curves of the stage division evaluation coefficient are obtained, and the image shows a rising trend along with the increase of the temperature coefficient, the temperature change rate coefficient, the heat source output power coefficient and the kiln internal pressure coefficient, the image shows a decreasing trend along with the decrease of the temperature coefficient, the temperature change rate coefficient, the heat source output power coefficient and the kiln internal pressure coefficient, and the stage division evaluation coefficient shows different running trends.

It is added that the temperature coefficient is reduced along with the increase of the temperature in the kiln, the temperature change rate coefficient is reduced along with the increase of the temperature change rate, the heat source output power coefficient is reduced along with the increase of the heat source output power, the kiln internal pressure coefficient is reduced along with the increase of the kiln internal pressure, and the kiln temperature coefficient shows a normal distribution curve change trend along with the change of a preset time point.

Specifically, the data change table of the phase division coefficient can be obtained through the kiln temperature coefficient, and is specifically shown in table 1:

as can be seen from Table 1, as the kiln temperature coefficient increases, the phase division coefficient increases, for example, when the temperature coefficient increases from 0.2 in the first row to 0.8 in the fifth row, the temperature change rate coefficient increases from 0.1 in the first row to 0.5 in the fifth row, the heat source output power coefficient increases from 0.3 in the first row to 0.7 in the fifth row, the kiln pressure coefficient increases from 0.2 in the first row to 0.8 in the fifth row, and the corresponding phase division coefficient increases from 1.41 in the first row to 1.91 in the fifth row, thereby further proving that the kiln temperature coefficient and the phase division coefficient have positive correlation, and the control system of the electric firing roller kiln is helped to more accurately identify the temperature change condition by analyzing the phase division coefficient, so that the corresponding heat energy source is switched in time, and the intelligent constant temperature control is realized.

Specifically, the parameters related to the processing of the stage division coefficients in the algorithm are not independent, wherein the temperature change rate is directly determined by the heat source output power, the heat loss and the heat transfer process in the kiln, when the heat source output power is increased, the temperature change rate is increased, the temperature in the kiln is increased more quickly, when the heat loss is larger than the heat source output power, the temperature change rate is negative, namely the temperature in the kiln is reduced, and the temperature in the kiln is increased to cause the expansion of gas in the kiln, so that the pressure in the kiln is increased.

Specifically, the reference kiln temperature data is obtained from a preset database. In a specific embodiment, the average output power and the average kiln internal pressure are obtained by respectively carrying out average calculation on the heat source output power and the kiln internal pressure in the historical data by referring to the kiln temperature data.

Further, the specific mode of automatically switching energy supply based on the stage division evaluation coefficient comprises the steps of acquiring a stage division interval from a preset database, wherein the stage division interval comprises a starting interval, a heating interval, a constant temperature interval and a cooling interval, automatically switching the supply heat energy source according to a preset supply rule to adapt to the starting stage of the electric firing roller kiln if the stage division evaluation coefficient is in the starting interval range, automatically switching the supply heat energy source according to the preset supply rule to adapt to the heating stage of the electric firing roller kiln if the stage division evaluation coefficient is in the heating interval range, automatically switching the supply heat energy source according to the preset supply rule to adapt to the constant temperature stage of the electric firing roller kiln if the stage division evaluation coefficient is in the constant temperature interval range, and automatically switching the supply heat energy source according to the preset supply rule to adapt to the cooling stage of the electric firing roller kiln if the stage division evaluation coefficient is in the cooling interval range.

In this embodiment, when it is detected that the electric kiln is in different stages, the heat energy source is automatically switched, for example, if it is detected that the electric kiln is in a constant temperature stage, the heat energy source currently being supplied is switched according to a preset supply rule of the constant temperature stage, for example, the supply ratio of electric energy in the corresponding heat energy source may be switched from 0.8 to 0.2 and the supply ratio of solar energy may be switched from 0.2 to 0.8, and by automatically switching the supply of the heat energy source according to different operation stages of the electric kiln, the most suitable heat input can be ensured in each stage, thereby avoiding energy waste and unnecessary cost expenditure, contributing to improving the overall energy utilization efficiency and reducing the production cost.

Specifically, the stage division interval is obtained from a preset database. In a specific embodiment, kiln temperature data in a starting stage in historical data of the electric firing roller kiln is substituted into a specific limiting expression of a stage division evaluation coefficient to obtain a corresponding data set, average operation is performed on the data set to obtain a first average value, kiln temperature data in a rising stage in the historical data of the electric firing roller kiln is substituted into the specific limiting expression of the stage division evaluation coefficient to obtain a corresponding data set, average operation is performed on the data set to obtain a second average value, kiln temperature data in a constant temperature stage in the historical data of the electric firing roller kiln is substituted into the specific limiting expression of the stage division evaluation coefficient to obtain a corresponding data set, average operation is performed on the data set to obtain a third average value, a range corresponding to 0 to the first average value is a starting interval, an interval corresponding to the first average value to the second average value is an ascending interval, an interval corresponding to the second average value to the third average value is a constant temperature interval, and otherwise the interval corresponding to the second average value is a cooling interval.

The embodiment of the application provides an electric-heating roller kiln constant-temperature control method based on multi-energy hybrid use, which comprises the following steps of obtaining temperatures of preset deployment positions of an electric-heating roller kiln at preset time points, obtaining corresponding adjustment temperature differences through analysis to judge whether to perform constant-temperature control, obtaining electric-heating roller kiln temperature difference analysis coefficients through the adjustment temperature differences of the preset deployment positions and external data, obtaining temperature control grades according to the electric-heating roller kiln temperature difference analysis coefficients, carrying out heat energy supply according to the temperature control grades, obtaining heat energy data, combining the obtained heat energy data with the preset proportions and the adjustment temperature differences to obtain constant-temperature proportion coincidence evaluation coefficients, carrying out proportion adjustment based on the constant-temperature proportion coincidence evaluation coefficients, wherein the constant-temperature proportion coincidence evaluation coefficients are used for evaluating the coincidence degree of the preset proportions of the multi-energy, combining the kiln temperature data of the electric-heating roller kiln obtained in real time with the heat energy data to obtain stage division evaluation coefficients, and automatically switching the energy supply according to the stage division evaluation coefficients, and using the stage division evaluation coefficients for judging the temperature control stage of the electric-heating roller kiln.

In the embodiment, the temperature of the electric firing roller kiln is accurately controlled by the steps of monitoring the temperature of the electric firing roller kiln in real time, calculating a temperature difference analysis coefficient, determining a temperature control level, accurately controlling heat energy supply, adjusting the proportion, automatically switching the energy supply and the like. Meanwhile, the stability and the reliability of a control system of the electric firing roller kiln are enhanced, and the quality control and the production efficiency of the ceramic tile sintering process are effectively ensured.

In summary, the embodiment of the application obtains the temperature analysis coefficient of the electric firing roller kiln by adjusting the temperature difference and the external data to obtain the temperature control grade, and simultaneously obtains the heat energy data by carrying out heat energy supply according to the temperature control grade, then obtains the constant temperature proportion according with the evaluation coefficient by combining the preset proportion and the adjustment temperature difference to carry out proportion adjustment, finally obtains the stage division evaluation coefficient by combining the kiln temperature data and the heat energy data obtained in real time and automatically switches the energy supply according to the stage division evaluation coefficient, thereby realizing the dynamic regulation and control automation of the multi-energy hybrid control, further improving the accuracy of the constant temperature control of the electric firing roller kiln for the multi-energy hybrid use, and effectively solving the problem of inaccurate constant temperature control of the electric firing roller kiln for the multi-energy hybrid use in the prior art.

It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of systems, apparatuses (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. The constant temperature control system of the electric firing roller kiln based on the multi-energy mixed use is characterized by comprising an electric firing roller kiln temperature detection module, a constant temperature dynamic control module, a multi-energy proportion regulation and control module and an automatic temperature control module;

the temperature detection module of the electric firing roller kiln is used for acquiring the temperature of each preset deployment position at the preset time point of the electric firing roller kiln, and judging whether to perform constant temperature control by analyzing the corresponding adjustment temperature difference;

The constant temperature dynamic control module is used for obtaining temperature difference analysis coefficients of the electric firing roller kiln through adjustment temperature differences of preset deployment positions and external data, and obtaining temperature control grades according to the temperature difference analysis coefficients of the electric firing roller kiln, wherein the temperature difference analysis coefficients of the electric firing roller kiln are used for comprehensively reflecting the temperature difference change stability degree of the electric firing roller kiln;

The multi-energy proportion regulation and control module is used for supplying heat energy according to the temperature control grade, acquiring heat energy data, combining the acquired heat energy data with a preset proportion and regulating temperature difference to obtain a constant-temperature proportion coincidence evaluation coefficient, and carrying out proportion regulation based on the constant-temperature proportion coincidence evaluation coefficient, wherein the constant-temperature proportion coincidence evaluation coefficient is used for evaluating the coincidence degree of the preset proportion of the multi-energy;

the automatic temperature control module is used for combining kiln temperature data acquired in real time with heat energy data to obtain a stage division evaluation coefficient, and automatically switching energy supply based on the stage division evaluation coefficient, wherein the stage division evaluation coefficient is used for judging the temperature control stage of the electric firing roller kiln;

The specific flow of judging whether to perform constant temperature control is as follows:

acquiring reference judgment data from a preset database, wherein the reference judgment data comprises temperature deviation and preset fault tolerance proportion;

Comparing the adjustment temperature difference of each preset deployment position with the temperature deviation in sequence:

If the adjustment temperature difference is not greater than the temperature deviation, marking the preset deployment position as 1, wherein the adjustment temperature difference represents the difference between the temperature of each preset deployment position and the preset constant temperature;

If the adjustment temperature difference is greater than the temperature deviation, marking the preset deployment position as 0;

Counting the number of preset deployment positions marked as 0, and combining the counted result with the total number of the preset deployment positions to obtain a constant-temperature out-of-control point proportion, wherein the constant-temperature out-of-control point proportion is represented by the ratio of the counted result to the total number of the preset deployment positions;

comparing the constant temperature out-of-control point proportion with a preset fault tolerance proportion:

If the proportion of the constant-temperature runaway points is not greater than the preset fault-tolerant proportion, the constant-temperature control is not performed;

and if the constant temperature out-of-control point proportion is larger than the preset fault-tolerant proportion, executing the function of the constant temperature dynamic control module.

2. The constant temperature control system of the electric roller kiln based on the multi-energy mixed use as claimed in claim 1, wherein the external data comprises ambient temperature, ambient humidity, supply rate and system response speed;

the heat energy data comprise a temperature change rate, solar energy consumption, wind energy consumption and electric energy consumption;

The kiln temperature data comprises the temperature in the kiln, the temperature change rate, the heat source output power and the pressure in the kiln.

3. The constant temperature control system of the electric firing roller kiln based on the multi-energy mixed use as claimed in claim 2, wherein the specific acquisition flow of the temperature difference analysis coefficient of the electric firing roller kiln is as follows:

Respectively numbering a preset time point and a preset deployment position, and acquiring reference external data from a preset database, wherein the reference external data comprises preset constant temperature, average humidity, a maximum supply rate and a minimum supply rate;

Obtaining an external adjusting coefficient according to the external data and the reference external data, wherein the external adjusting coefficient is used for quantifying the influence of external factors on constant temperature control;

preprocessing the response speed of the system, wherein the preprocessing is used for normalizing the response speed of the system;

and obtaining the temperature difference analysis coefficient of the electric firing roller kiln by obtaining the adjustment temperature difference and combining the external adjustment coefficient.

4. The constant temperature control system of the electric firing roller kiln based on the multi-energy mixed use as claimed in claim 2, wherein the specific acquisition process of the constant temperature proportion conforming to the evaluation coefficient is as follows:

Numbering the heat energy sources according to the types of the heat energy sources, and acquiring the preset proportion and the corresponding heat energy source data corresponding to the heat energy sources;

Based on the temperature control level, carrying out value assignment on all heat energy sources by using the marking coefficients;

and obtaining total energy consumption through the heat energy data and the corresponding use mark coefficients, obtaining a reference temperature change rate from a preset database, and obtaining a constant temperature proportion coincidence evaluation coefficient by combining the heat energy data and the preset proportion.

5. The constant temperature control system of the electric firing roller kiln based on the multi-energy mixed use as claimed in claim 4, wherein the specific limit expression of the constant temperature proportion conforming to the evaluation coefficient is as follows:

;

Wherein t represents the number of a preset time point, ,The total number of preset time points is indicated,Represents the solar energy consumption at the t-th preset time point,Represents the amount of wind energy consumed at the t-th preset point in time,Represents the amount of electric power consumption at the t-th preset time point,Indicating the usage index corresponding to the solar energy consumption amount at the t-th preset time point,Indicating the corresponding usage index of the wind energy consumption at the t-th preset time point,Indicating the usage index corresponding to the amount of power consumption at the t-th preset time point,The temperature change rate at the t-th preset time point is represented,Indicating the rate of change of the reference temperature,Indicating the total energy consumption at the t-th preset time point,The preset proportion is indicated to be the same as the preset proportion,Indicating that the constant temperature ratio at the t-th preset time point meets the evaluation coefficient.

6. The constant temperature control system of the electric firing roller kiln based on the multi-energy mixed use as claimed in claim 1, wherein the specific process of the proportional adjustment based on the constant temperature proportional coincidence evaluation coefficient is as follows:

acquiring a proportion evaluation threshold value from a preset database, and comparing the proportion evaluation threshold value with a constant-temperature proportion coincidence evaluation coefficient:

If the constant-temperature proportion accords with the evaluation coefficient and is not smaller than the proportion evaluation threshold value, not performing proportion adjustment;

If the constant-temperature proportion accords with the evaluation coefficient to be smaller than the proportion evaluation threshold value, proportion adjustment is carried out;

the specific process for carrying out the proportion adjustment is as follows:

Constructing a proportion adjustment mapping set of proportion coincidence difference and adjustment force proportion, wherein the proportion coincidence difference represents the difference value between a constant-temperature proportion coincidence evaluation coefficient and a proportion evaluation threshold value;

And obtaining a corresponding adjusting force proportion from the proportion adjusting mapping set, and adjusting a preset proportion according to the corresponding adjusting force proportion.

7. The constant temperature control system of the electric firing roller kiln based on the multi-energy mixed use as claimed in claim 2, wherein the specific flow of the stage division evaluation coefficient is as follows:

Obtaining reference kiln temperature data from a preset database, wherein the reference kiln temperature data comprises average output power and average kiln internal pressure;

carrying out data preprocessing on the kiln temperature data, wherein the data preprocessing represents the removal of units and the unification of dimensions of the kiln temperature data;

obtaining a preset constant temperature, combining kiln temperature data and reference kiln temperature data to obtain a kiln temperature coefficient, wherein the kiln temperature coefficient comprises a temperature coefficient, a temperature change rate coefficient, a heat source output power coefficient and a kiln internal pressure coefficient;

And carrying out summation operation on the kiln temperature coefficient and then carrying out post-treatment to obtain a stage division evaluation coefficient.

8. The constant temperature control system of the electric firing roller kiln based on the multi-energy mixed use as claimed in claim 7, wherein the specific mode of automatically switching the energy supply based on the stage division evaluation coefficient is as follows:

Acquiring a stage division interval from a preset database, wherein the stage division interval comprises a starting interval, a heating interval, a constant temperature interval and a cooling interval;

If the stage division evaluation coefficient is in the starting interval range, automatically switching the heat energy supply according to a preset supply rule to adapt to the starting stage of the electric firing roller kiln, wherein the preset supply rule comprises a preset proportion and a corresponding heat energy supply;

if the stage division evaluation coefficient is in the range of the temperature rising interval, automatically switching and supplying heat energy according to a preset supply rule so as to adapt to the temperature rising stage of the electric roller kiln;

If the stage division evaluation coefficient is in the constant temperature interval range, automatically switching and supplying heat energy according to a preset supply rule so as to adapt to the constant temperature stage of the electric firing roller kiln;

If the stage division evaluation coefficient is in the range of the cooling interval, automatically switching the heat energy supply according to a preset supply rule so as to adapt to the cooling stage of the electric firing roller kiln.

9. The constant temperature control method of the electric firing roller kiln based on the mixed use of multiple energy sources is characterized by comprising the following steps:

Acquiring the temperature of each preset deployment position at the preset time point of the electric firing roller kiln, and analyzing to obtain a corresponding adjustment temperature difference so as to judge whether to perform constant temperature control;

Obtaining an electric-burning roller kiln temperature difference analysis coefficient through the adjustment temperature difference of each preset deployment position and external data, and obtaining a temperature control grade according to the electric-burning roller kiln temperature difference analysis coefficient, wherein the electric-burning roller kiln temperature difference analysis coefficient is used for comprehensively reflecting the temperature difference change stability degree of the electric-burning roller kiln;

Performing heat energy supply according to the temperature control level, acquiring heat energy data, combining the acquired heat energy data with a preset proportion and an adjustment temperature difference to obtain a constant-temperature proportion coincidence assessment coefficient, and performing proportion adjustment based on the constant-temperature proportion coincidence assessment coefficient, wherein the constant-temperature proportion coincidence assessment coefficient is used for assessing the coincidence degree of the preset proportion of multiple energy sources;

Combining kiln temperature data acquired in real time with heat energy data to obtain a stage division evaluation coefficient, and automatically switching energy supply based on the stage division evaluation coefficient, wherein the stage division evaluation coefficient is used for judging the temperature control stage of the electric firing roller kiln;

Comparing the constant temperature control point proportion with a preset fault tolerance proportion, and if the constant temperature control point proportion is not larger than the preset fault tolerance proportion, not performing constant temperature control;