CN116902544B - Electric heating type lignite crushing and conveying control method and system based on data analysis - Google Patents
Electric heating type lignite crushing and conveying control method and system based on data analysis Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
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Abstract
The application discloses an electric heating type lignite crushing and conveying control method and system based on data analysis, and particularly relates to the technical field of transmission monitoring, wherein the electric heating type lignite crushing and conveying control method and system comprise a data processing module, an information acquisition module, an effect judging module and a transportation adjusting module, wherein the information acquisition module, the effect judging module and the transportation adjusting module are in communication connection with the data processing module; by comparing the lignite crushing effect evaluation coefficient with the effect evaluation first threshold value and the effect evaluation second threshold value, crushing effect signals of different grades can be generated and used for judging the crushing effect of lignite; the transportation speed of the transportation conveyor belt is regulated, so that the lignite can be effectively utilized in the transportation process, and a better heating effect is achieved; the secondary adjustment of the conveying speed is calculated to adjust the conveying speed of the conveying conveyor belt, so that the lignite crushing machine can be better suitable for lignite with different crushing effects, the electric heating efficiency and quality are optimized, and the energy of the lignite is guaranteed to be utilized to the greatest extent.
Description
Technical Field
The application relates to the technical field of transmission monitoring, in particular to an electric heating type lignite crushing and conveying control method and system based on data analysis.
Background
The electric heating type lignite is heated by utilizing electric energy, so that high energy utilization efficiency is provided. Compared with the traditional coal heating mode, the electric heating can control the heating temperature and the heating speed more accurately, so that the energy waste is reduced. The whole process comprises crushing and conveying, and firstly, the lignite raw material needs to be crushed, so that the surface area and the heatable performance of the lignite raw material can be improved. Crushing is usually carried out by using a crusher or a crushing mill, and a suitable crushing method and equipment are selected according to the nature and processing requirements of lignite. In the conveying process, the distribution and flow of the particles are guided by the diversion and flow guiding device, so that the particles are ensured to be uniformly dispersed to each area of the conveyor belt, and accumulation or aggregation is avoided. The conveying mode can adopt a conveying conveyor belt, and uniformity and stability of the lignite are required to be maintained so as to ensure that the subsequent heating process can be effectively carried out.
However, in practice, the speed of the crushed lignite is generally fixed when the crushed lignite is conveyed by the conveying belt, and the effect of the crushed lignite cannot be quantitatively evaluated after the lignite is crushed, so that the accuracy of the effect of the crushed lignite is poor, the speed of the crushed lignite when the conveying belt is conveyed according to the effect of the crushed lignite cannot be adjusted, and the energy of the lignite cannot be fully utilized.
In order to solve the above problems, a technical solution is now provided.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks of the prior art, embodiments of the present application provide a method and a system for controlling the crushing and conveying of lignite by electric heating based on data analysis, so as to solve the above-mentioned problems in the prior art.
In order to achieve the above purpose, the present application provides the following technical solutions:
the electric heating type lignite crushing and conveying control method based on data analysis comprises the following steps:
step S1: collecting conveying process information, and calculating a uniform pressure average value and a crushing effect change coefficient in a crushing effect evaluation set according to the conveying process information;
step S2: collecting crushing abnormal information, and calculating crushing abnormal evaluation values in a crushing effect evaluation set according to the crushing abnormal information;
step S3: calculating a lignite crushing effect evaluation coefficient by normalizing the pressure uniform average value, the crushing effect change coefficient and the crushing abnormality evaluation value; comparing the lignite crushing effect evaluation coefficient with the effect evaluation first threshold value and the effect evaluation second threshold value to generate crushing effect signals of different grades;
step S4: and adjusting the conveying speed of the lignite conveyed to the conveying belt of the electric heating link according to the initial conveying speed and the lignite crushing effect evaluation coefficient.
In a preferred embodiment, in step S1, a pressure monitoring area is set, and the pressure monitoring area is uniformly arranged thereinA pressure sensor for acquiring->The pressure values measured by the pressure sensors; calculating a crushing pressure uniformity evaluation value:the method comprises the steps of carrying out a first treatment on the surface of the Wherein (1)>Respectively crushing pressure uniformity evaluation value, th ∈ ->Pressure values measured by the individual pressure sensors +.>Average value of the pressure values measured by the individual pressure sensors,/->Numbers representing different pressure sensors in the pressure monitoring area, < > in->，/>Are positive integers greater than 1;
setting a crushing effect evaluation set, wherein the crushing effect evaluation set comprises the monitoring of the pressure monitoring areaCalculating the crushing effect evaluation set of the uniform crushing pressure evaluation values>Average value of the individual crushing pressure uniformity evaluation values; assessment of crushing Effect in the Collection->The average value of each crushing pressure uniformity evaluation value is labeled as the pressure uniformity average value.
In a preferred embodiment, the crushing effect change coefficient is calculated by the expression:the method comprises the steps of carrying out a first treatment on the surface of the Wherein (1)>The first part in the crushing effect evaluation collection is respectively the crushing effect change coefficient>A crushing pressure uniformity evaluation value and a crushing effect evaluation set +.>A uniform evaluation value of crushing pressure, < >>Number indicating the uniform evaluation value of crushing pressure in the crushing effect evaluation set, +.>For the number of crushing pressure uniformity evaluation values in the crushing effect evaluation set, +.>，/>Are positive integers greater than 1.
In a preferred embodiment, in step S2, the crushing abnormality information is embodied by a crushing abnormality evaluation value; the method for obtaining the crushing abnormality evaluation value comprises the following steps: monitoring the rotation speed value of a drive shaft for crushing of the lignite crushing device corresponding to the crushing effect evaluation set, and settingA safe rotation speed interval, wherein the time that the rotation speed value of the driving shaft for crushing of the lignite crushing device is not in the safe rotation speed interval is obtained, and the time of the time interval corresponding to the crushing effect evaluation set is marked asCalculating the time when the rotational speed value of the driving shaft for crushing of the single lignite crushing device is not in the safe rotational speed interval, and marking the time when the rotational speed value of the driving shaft for crushing of the single lignite crushing device is not in the safe rotational speed interval as +.>The total time when the rotational speed value of the drive shaft of the lignite crushing device for crushing is not in the safe rotational speed interval is marked +.>；
Setting a single abnormal time threshold; acquiring the number of times when the rotational speed value of the driving shaft for crushing of the lignite crushing device is not in a safe rotational speed interval, and acquiringThe number of times that the rotational speed value of the driving shaft for crushing of the lignite crushing device is not in the safe rotational speed interval is greater than the single abnormal time threshold; the number of times when the rotational speed value of the drive shaft for crushing of the lignite crushing device is not in the safe rotational speed interval is marked +.>Will->The number of times when the rotational speed value of the drive shaft for crushing of the lignite crushing apparatus greater than the single abnormal time threshold is not in the safe rotational speed interval is marked +.>；
Calculating a crushing abnormality evaluation value, wherein the expression is as follows:wherein->The abnormal evaluation value was determined for breakage.
In a preferred embodiment, in step S3, the lignite crushing effect evaluation coefficient is calculated by normalizing the pressure uniformity average value, the crushing effect variation coefficient and the crushing abnormality evaluation value;
setting an effect evaluation first threshold and an effect evaluation second threshold; comparing the lignite crushing effect evaluation coefficient with the effect evaluation first threshold value and the effect evaluation second threshold value to generate crushing effect signals with different grades:
when the lignite crushing effect evaluation coefficient is smaller than the effect evaluation first threshold value, generating a first-stage crushing effect signal; when the lignite crushing effect evaluation coefficient is larger than or equal to the effect evaluation first threshold value and smaller than or equal to the effect evaluation second threshold value, generating a secondary crushing effect signal; and when the lignite crushing effect evaluation coefficient is larger than the effect evaluation second threshold value, generating a three-level crushing effect signal.
In a preferred embodiment, in step S4, the transport speed of the lignite transported to the transport conveyor of the electric heating link is adjusted:
generating a transport stopping signal when generating the three-level crushing effect signal; generating a transportation unchanged signal when generating a first-stage crushing effect signal;
when a secondary crushing effect signal is generated, an adjustment transportation signal is generated, and the initial transportation speed is adjusted according to a lignite crushing effect evaluation coefficient corresponding to the secondary crushing effect signal;
setting an initial transportation speed; calculating a secondary adjustment transportation speed, wherein the expression is as follows:wherein, the method comprises the steps of, wherein,respectively is a secondary adjustmentWhole transport speed, initial transport speed, and speed adjustment coefficient.
In a preferred embodiment, the electric heating type lignite crushing and conveying control system based on data analysis comprises a data processing module, an information acquisition module, an effect judging module and a transportation adjusting module, wherein the information acquisition module, the effect judging module and the transportation adjusting module are in communication connection with the data processing module;
the information acquisition module acquires conveying process information, and sends the conveying process information to the data processing module, so that a uniform pressure average value and a crushing effect change coefficient are obtained through calculation;
the information acquisition module acquires crushing abnormal information, sends the crushing abnormal information to the data processing module, and calculates to obtain a crushing abnormal evaluation value;
calculating the lignite crushing effect evaluation coefficient by normalizing the pressure uniform average value, the crushing effect change coefficient and the crushing abnormality evaluation value through a data processing module; the effect judging module generates crushing effect signals of different grades through comparison of the lignite crushing effect evaluation coefficient with the effect evaluation first threshold value and the effect evaluation second threshold value;
and the transportation regulating module regulates the transportation speed of the lignite transported to the transportation conveyor belt of the electric heating link according to the initial transportation speed and the lignite crushing effect evaluation coefficient.
The application relates to an electric heating type lignite crushing and conveying control method and a system based on data analysis, which have the technical effects and advantages that:
1. the crushing effect of the lignite can be judged by calculating the evaluation coefficient of the crushing effect of the lignite. By comparing the lignite crushing effect evaluation coefficient with the effect evaluation first threshold and the effect evaluation second threshold, crushing effect signals of different grades can be generated and used for judging the crushing effect of lignite, and the crushing effect signals of different grades mark the quality of the crushing effect.
2. The conveying speed of the conveying conveyor belt is adjusted to adapt to crushing effects of different grades. The lignite can be ensured to be effectively utilized in the transmission process, and a better heating effect is achieved; the secondary adjustment of the conveying speed is calculated to adjust the conveying speed of the conveying conveyor belt, so that the lignite crushing machine can be better suitable for lignite with different crushing effects, the electric heating efficiency and quality are optimized, and the energy of the lignite is utilized to the greatest extent.
Drawings
FIG. 1 is a schematic diagram of an electric heating type lignite crushing and conveying control method based on data analysis;
fig. 2 is a schematic structural diagram of the electric heating type lignite crushing and conveying control system based on data analysis.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Embodiment 1, fig. 1 shows an electric heating type lignite crushing and conveying control method based on data analysis, which comprises the following steps:
step S1: collecting conveying process information, and calculating a uniform pressure average value and a crushing effect change coefficient in a crushing effect evaluation set according to the conveying process information;
step S2: collecting crushing abnormal information, and calculating crushing abnormal evaluation values in a crushing effect evaluation set according to the crushing abnormal information;
step S3: calculating a lignite crushing effect evaluation coefficient by normalizing the pressure uniform average value, the crushing effect change coefficient and the crushing abnormality evaluation value; comparing the lignite crushing effect evaluation coefficient with the effect evaluation first threshold value and the effect evaluation second threshold value to generate crushing effect signals of different grades;
step S4: and adjusting the conveying speed of the lignite conveyed to the conveying belt of the electric heating link according to the initial conveying speed and the lignite crushing effect evaluation coefficient.
In step S1, conveying process information is collected, and a pressure uniformity average value and a crushing effect change coefficient are calculated according to the conveying process information.
After the lignite is crushed by using the lignite crushing device, the crushed lignite is generally and uniformly transmitted to a conveying belt according to the treatment requirement of the lignite, firstly, the uniform transmission can avoid the accumulation of excessive or insufficient lignite on a certain position, and the waste of energy consumption is reduced; and secondly, the uniform transmission can reduce the impact and vibration on the conveyor belt.
Under ideal crushing effect, after uniform transmission to the transport conveyor, the pressure of lignite on the transport conveyor is uniform and the placement of the transport conveyor is horizontal.
However, in practice, when the lignite is on the conveyor belt, the pressure of the lignite on the conveyor belt is uneven, and the more uneven the pressure of the lignite on the conveyor belt is, the less effective the lignite crushing device is on the lignite crushing.
The pressure monitoring area is set based on the conveying belt, and the pressure monitoring area is uniformly provided withThe pressure sensors are, for example, uniformly arranged as 3*5 pressure sensors or the like. When lignite is on a conveying belt, the +.>The pressure values measured by the pressure sensors.
Calculating a crushing pressure uniformity evaluation value:the method comprises the steps of carrying out a first treatment on the surface of the Wherein,respectively crushing pressure uniformity evaluation value, th ∈ ->Pressure values measured by the individual pressure sensors +.>Average value of the pressure values measured by the individual pressure sensors,/->Indicating the number of the different pressure sensors in the pressure monitoring area,，/>are positive integers greater than 1.
The crushing pressure uniformity evaluation value reflects the uniformity of the pressure distribution of the lignite on the conveyor belt on the pressure monitoring area, thereby reflecting the crushing effect of the lignite after crushing on the pressure monitoring area. The larger the crushing pressure uniformity evaluation value is, the more uneven the pressure distribution of the lignite on the conveying belt is on the pressure monitoring area is, and the worse the crushing effect of the lignite on the pressure monitoring area is reflected.
Setting a crushing effect evaluation set, wherein the crushing effect evaluation set comprises the monitoring of the pressure monitoring areaCalculating the crushing effect evaluation set of the uniform crushing pressure evaluation values>Average value of the individual crushing pressure uniformity evaluation values. Within the crushing effect evaluation set->The larger the average value of the uniform evaluation values of the crushing pressure is, the worse the crushing effect of the lignite is, and the +.>The average value of each crushing pressure uniformity evaluation value is labeled as the pressure uniformity average value.
Since the lignite is transported on the transport conveyor in sequence, two adjacent in time sequenceThe difference of the crushing pressure uniformity evaluation values corresponding to the lignite corresponding to the pressure monitoring areas can reflect the deviation of the crushing effect, so that the stability of the performance of the lignite crushing device is evaluated; therefore, the change coefficient of the crushing effect is calculated, and the expression is as follows:the method comprises the steps of carrying out a first treatment on the surface of the Wherein (1)>The first part in the crushing effect evaluation collection is respectively the crushing effect change coefficient>A crushing pressure uniformity evaluation value and a crushing effect evaluation set +.>A uniform evaluation value of crushing pressure, < >>Number indicating the uniform evaluation value of crushing pressure in the crushing effect evaluation set, +.>For the number of crushing pressure uniformity evaluation values in the crushing effect evaluation set, +.>，/>Are positive integers greater than 1.
The larger the change coefficient of the crushing effect is, the larger the difference of the crushing effects of the corresponding lignite in the crushing effect evaluation collection is, and the more unstable the crushing performance of the lignite crushing device is.
The logic of the pressure monitoring area for monitoring the crushing pressure uniformity evaluation value is as follows: and calculating a crushing pressure uniformity evaluation value for the lignite in the pressure monitoring area, and calculating the crushing pressure uniformity evaluation value for the next batch of lignite reaching the pressure monitoring area after the lignite corresponding to the crushing pressure uniformity evaluation value is conveyed away from the pressure monitoring area through the conveying belt.
The pressure monitoring area is set based on the specification of the conveying belt, is fixed at the feeding end of the conveying belt, namely the end of the conveying belt, which is used for conveying the crushed lignite, and can monitor the continuous pressure of the lignite conveyed by the conveying belt.
In step S2, acquiring crushing abnormal information, acquiring a time interval corresponding to the crushing effect evaluation set, and acquiring the crushing abnormal information in the time interval corresponding to the crushing effect evaluation set; crushing abnormal information is obtained by monitoring abnormal conditions of the lignite crushing device. The crushing abnormality information is represented by a crushing abnormality evaluation value.
An abnormal excessive rotation speed of the lignite crushing device can indicate that the crushing effect of lignite is insufficient, and the lignite is excessively crushed due to the excessive rotation speed of the lignite crushing device: if the rotational speed of the lignite crushing device is too high, lignite particles may be excessively crushed beyond a required crushing degree. Too low a rotational speed of the lignite crushing device results in insufficient crushing: if the rotational speed of the lignite crushing device is too low, it may not be possible to completely crush lignite to a desired particle size. This can result in coarse lignite particles which are not sufficiently broken up, thereby affecting the effectiveness and efficiency of the subsequent treatment process. If there is an abnormal fluctuation in the rotational speed of the lignite crushing apparatus, i.e., the rotational speed is frequently changed in a short time, instability of the lignite crushing effect may be caused. This may result in that a part of lignite granules is crushed unevenly, resulting in an insufficient lignite crushing effect.
The method for obtaining the crushing abnormality evaluation value comprises the following steps:
the method comprises the steps of monitoring the rotation speed value of a drive shaft for crushing of a lignite crushing device corresponding to a crushing effect evaluation set in real time, setting a safe rotation speed interval, obtaining the time when the rotation speed value of the drive shaft for crushing of the lignite crushing device is not in the safe rotation speed interval, and enabling the crushing effect to be achievedThe time stamp of the time interval corresponding to the fruit evaluation set is as followsCalculating the time when the rotational speed value of the driving shaft for crushing of the single lignite crushing device is not in the safe rotational speed interval, and marking the time when the rotational speed value of the driving shaft for crushing of the single lignite crushing device is not in the safe rotational speed interval as +.>The total time when the rotational speed value of the drive shaft of the lignite crushing device for crushing is not in the safe rotational speed interval is marked +.>。
Setting a single abnormal time threshold, whenWhen the abnormal time threshold value is larger than the single abnormal time threshold value, the abnormal time of the rotating speed is overlong, the abnormal crushing of the lignite by the lignite crushing device is serious, the times that the rotating speed value of a driving shaft for crushing of the lignite crushing device is not in a safe rotating speed interval are acquired, and the times are acquired>The number of times that the rotational speed value of the driving shaft for crushing of the lignite crushing device is not in the safe rotational speed interval is greater than the single abnormal time threshold; the number of times when the rotational speed value of the drive shaft for crushing of the lignite crushing device is not in the safe rotational speed interval is marked +.>Will->The number of times when the rotational speed value of the drive shaft for crushing of the lignite crushing apparatus greater than the single abnormal time threshold is not in the safe rotational speed interval is marked +.>。
Calculating a crushing abnormality evaluation value, wherein the expression is as follows:wherein->For crushing abnormal evaluation values, the larger the crushing abnormal evaluation values are, the larger the ratio of the total time that the rotating speed value of the driving shaft for crushing of the lignite crushing device is not in the safe rotating speed interval to the time interval corresponding to the crushing effect evaluation set is, the longer the rotating speed value of the driving shaft for crushing of the lignite crushing device is in the abnormal state, the more serious the condition that the single duration time is, which means that the rotating speed is operated in an unsafe range for a longer time, so that overload, overheat or other faults of the crushing device are caused, thereby influencing the full realization of the crushing effect, causing the nonuniformity and instability of lignite crushing, so that part of lignite cannot be fully crushed or the crushing degree is inconsistent, and influencing the electric heating treatment of the lignite in the later stage.
The rotational speed value of the drive shaft of the lignite crushing device for crushing is acquired based on a rotational speed sensor.
The single abnormal time threshold is set by a person skilled in the art according to the industry standard of lignite in practice when the lignite is crushed by the lignite crushing device and other practical situations.
The safe rotation speed interval is set by a person skilled in the art according to actual conditions such as a requirement standard of an effect of the lignite on the lignite crushing device in practice, and the safe rotation speed interval reflects the rotation speed interval of normal operation of the lignite crushing device.
In step S3, the conveying process information and the crushing abnormality information are comprehensively analyzed, thereby evaluating the crushing effect of the lignite in the crushing effect evaluation set.
And calculating the lignite crushing effect evaluation coefficient by normalizing the pressure uniform average value, the crushing effect change coefficient and the crushing abnormality evaluation value. For example, the application can adopt the following formula to perform the lignite crushing effectAnd calculating an evaluation coefficient, wherein the expression is as follows:the method comprises the steps of carrying out a first treatment on the surface of the Wherein (1)>Respectively evaluating the coefficient and the uniform average value of the pressure of the lignite crushing effect; />Respectively, a pressure uniform average value, a crushing effect change coefficient and a preset proportion coefficient of a crushing abnormality evaluation value, +.>Are all greater than 0.
The crushing effect of the lignite can be judged through the lignite crushing effect evaluation coefficient, and the larger the lignite crushing effect evaluation coefficient is, the worse the quality of the crushing effect of the lignite in the crushing effect evaluation set is.
Setting an effect evaluation first threshold and an effect evaluation second threshold, wherein the effect evaluation first threshold is smaller than the effect evaluation second threshold; the first threshold and the second threshold of the effect evaluation are set according to the size of the lignite crushing effect evaluation coefficient, the requirement standard of the lignite on the effect of crushing in the technical field of the art, the requirement standard of the lignite on the crushing effect under the electric heating type treatment and other actual conditions, and are not repeated here.
Comparing the lignite crushing effect evaluation coefficient with the effect evaluation first threshold value and the effect evaluation second threshold value to generate crushing effect signals of different grades, and judging the effect of the lignite in crushing:
when the lignite crushing effect evaluation coefficient is smaller than the first threshold value of the effect evaluation, a first-stage crushing effect signal is generated, at the moment, the crushing effect of the lignite in the crushing effect evaluation set is good, the lignite can reach the requirement standard of the crushing effect of the electric heating type lignite treatment, and the lignite in the crushing effect evaluation set can be subjected to the electric heating type lignite treatment through the conveying of a conveying conveyor belt.
When the lignite crushing effect evaluation coefficient is larger than or equal to the first effect evaluation threshold and smaller than or equal to the second effect evaluation threshold, a secondary crushing effect signal is generated, and at the moment, the crushing effect of the lignite in the crushing effect evaluation set is general, the electric heating type treatment efficiency of the lignite is adversely affected.
When the lignite crushing effect evaluation coefficient is larger than the effect evaluation second threshold value, a three-level crushing effect signal is generated, at the moment, the crushing effect of the lignite in the crushing effect evaluation set is poor, and if the lignite in the crushing effect evaluation set is conveyed by the conveying belt at the moment, the full utilization of the lignite is not facilitated, and the electric heating treatment efficiency of the lignite is adversely affected.
The greater the level of the crushing effect signal, the poorer the effect of crushing lignite.
The crushing effect of the lignite can be judged by calculating the evaluation coefficient of the crushing effect of the lignite. By comparing the lignite crushing effect evaluation coefficient with the effect evaluation first threshold and the effect evaluation second threshold, crushing effect signals of different grades can be generated and used for judging the crushing effect of lignite, and the crushing effect signals of different grades mark the quality of the crushing effect.
In step S4, after the crushed lignite is uniformly transferred to the transport conveyor according to the processing requirements for the lignite, the lignite crushing effect evaluation coefficient about the crushed lignite is obtained, and then the lignite is transferred to the electric heating link through the transport conveyor.
In the process of being conveyed to the electric heating link through the conveying conveyor belt, the conveying speed of the lignite conveyed to the conveying conveyor belt of the electric heating link is adjusted:
the initial conveying speed is set, is the speed of the conveying conveyor belt in a normal state, and is suitable for the conveying speed of the conveying conveyor belt under the condition that the crushing effect of the lignite is good.
When the three-stage crushing effect signal is generated, a transport stopping signal is generated, and at the moment, the transport of the transport conveyor belt transported to the electric heating link is stopped, and because the crushing effect of the lignite is poor at the moment, if the lignite in the crushing effect evaluation set is still electrically heated, the energy of the lignite can not be fully released, and therefore the lignite in the crushing effect evaluation set is re-crushed at the moment.
When the first-stage crushing effect signal is generated, a transportation unchanged signal is generated, and the initial transportation speed is not required to be adjusted.
When the secondary crushing effect signal is generated, an adjusting transportation signal is generated, and at the moment, the initial transportation speed is adjusted according to the lignite crushing effect evaluation coefficient corresponding to the secondary crushing effect signal so as to better adjust the efficiency of the lignite during heating according to the crushing effect of the lignite.
Calculating a secondary adjustment transportation speed, wherein the expression is as follows:wherein->The method comprises the steps of respectively adjusting the transportation speed, the initial transportation speed and the speed adjustment coefficient for the secondary, wherein the larger the lignite crushing effect evaluation coefficient is, the smaller the transportation speed for the secondary adjustment is, so that the lignite is fully heated by slowing down the speed of the lignite entering electric heating.
The speed adjustment coefficient is set according to the initial transportation speed, the lignite crushing effect evaluation coefficient and actual conditions such as speed requirement standards of the transportation conveyor belt by a person skilled in the art, and is used for balancing the initial transportation speed and the lignite crushing effect evaluation coefficient so as to obtain accurate secondary adjustment transportation speed.
The conveying speed of the conveying conveyor belt is adjusted to adapt to crushing effects of different grades. The lignite can be ensured to be effectively utilized in the transmission process, and a better heating effect is achieved; the secondary adjustment of the conveying speed is calculated to adjust the conveying speed of the conveying conveyor belt, so that the lignite crushing machine can be better suitable for lignite with different crushing effects, the electric heating efficiency and quality are optimized, and the energy of the lignite is utilized to the greatest extent. This helps to ensure that the heating effect of the lignite meets the requirements and to improve the efficiency of the whole process.
Example 2 the difference between example 2 and example 1 of the present application is that this example describes an electrically heated lignite crushing and conveying control system based on data analysis.
Fig. 2 shows a schematic structural diagram of the electric heating type lignite crushing and conveying control system based on data analysis, which comprises a data processing module, an information acquisition module, an effect judging module and a transportation adjusting module, wherein the information acquisition module, the effect judging module and the transportation adjusting module are in communication connection with the data processing module.
The information acquisition module acquires conveying process information, and sends the conveying process information to the data processing module, so that a uniform pressure average value and a crushing effect change coefficient are obtained through calculation.
The information acquisition module acquires crushing abnormal information, and sends the crushing abnormal information to the data processing module to calculate and obtain a crushing abnormal evaluation value.
Calculating the lignite crushing effect evaluation coefficient by normalizing the pressure uniform average value, the crushing effect change coefficient and the crushing abnormality evaluation value through a data processing module; the effect judging module generates crushing effect signals of different grades through comparison of the lignite crushing effect evaluation coefficient with the effect evaluation first threshold value and the effect evaluation second threshold value.
And the transportation regulating module regulates the transportation speed of the lignite transported to the transportation conveyor belt of the electric heating link according to the initial transportation speed and the lignite crushing effect evaluation coefficient.
The above formulas are all formulas with dimensionality removed and numerical calculation, the formulas are formulas with the latest real situation obtained by software simulation through collecting a large amount of data, and preset parameters and threshold selection in the formulas are set by those skilled in the art according to the actual situation.
The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center by wired (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more sets of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium may be a solid state disk.
Those of ordinary skill in the art will appreciate that the various illustrative modules and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described system, apparatus and module may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, and for example, the division of the modules is merely a logical function division, and there may be additional divisions when actually implemented, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or modules, which may be in electrical, mechanical, or other forms.
The modules described as separate components may or may not be physically separate, and components shown as modules may or may not be physical modules, may be located in one place, or may be distributed over multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist alone physically, or two or more modules may be integrated into one module.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Finally: the foregoing description of the preferred embodiments of the application is not intended to limit the application to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the application are intended to be included within the scope of the application.
Claims (4)
1. The electric heating type lignite crushing and conveying control method based on data analysis is characterized by comprising the following steps of:
step S1: collecting conveying process information, and calculating a uniform pressure average value and a crushing effect change coefficient in a crushing effect evaluation set according to the conveying process information;
step S2: collecting crushing abnormal information, and calculating crushing abnormal evaluation values in a crushing effect evaluation set according to the crushing abnormal information;
step S3: calculating a lignite crushing effect evaluation coefficient by normalizing the pressure uniform average value, the crushing effect change coefficient and the crushing abnormality evaluation value; comparing the lignite crushing effect evaluation coefficient with the effect evaluation first threshold value and the effect evaluation second threshold value to generate crushing effect signals of different grades;
step S4: according to the initial transportation speed and the lignite crushing effect evaluation coefficient, adjusting the transportation speed of the lignite transported to a transportation conveyor belt of an electric heating link;
in step S1, a pressure monitoring area is set, n pressure sensors are uniformly arranged in the pressure monitoring area, and pressure values measured by the n pressure sensors are obtained; calculating a crushing pressure uniformity evaluation value:wherein Pyj and Yjz i Yjzp are respectively the crushing pressure uniformity evaluation value, the pressure value measured by the ith pressure sensor and n pressure transmissionsThe average value of the pressure values measured by the sensors, i represents the number of the different pressure sensors in the pressure monitoring area, i=1, 2, 3, 4.
Setting a crushing effect evaluation set, wherein the crushing effect evaluation set comprises m crushing pressure uniform evaluation values monitored by a pressure monitoring area, and calculating the average value of the m crushing pressure uniform evaluation values in the crushing effect evaluation set; marking the average value of m crushing pressure uniformity evaluation values in the crushing effect evaluation set as a pressure uniformity average value;
calculating the change coefficient of the crushing effect, wherein the expression is as follows:wherein Pbx and Pyj u 、Pyj u+1 The method comprises the steps of respectively obtaining a crushing effect change coefficient, a (u) th crushing pressure uniformity evaluation value in a crushing effect evaluation set and a (u+1) th crushing pressure uniformity evaluation value in the crushing effect evaluation set, wherein u represents the number of the crushing pressure uniformity evaluation values in the crushing effect evaluation set, m is the number of the crushing pressure uniformity evaluation values in the crushing effect evaluation set, and u=1, 2, 3, 4, the number of the crushing pressure uniformity evaluation values in the crushing effect evaluation set, m, and u and m are positive integers larger than 1;
in step S2, crushing abnormality information is represented by a crushing abnormality evaluation value; the method for obtaining the crushing abnormality evaluation value comprises the following steps: monitoring the rotation speed value of a drive shaft for crushing of the lignite crushing device corresponding to the crushing effect evaluation set, setting a safe rotation speed interval, obtaining time when the rotation speed value of the drive shaft for crushing of the lignite crushing device is not in the safe rotation speed interval, marking the time of the time interval corresponding to the crushing effect evaluation set as TA, calculating the time when the rotation speed value of the drive shaft for crushing of the single lignite crushing device is not in the safe rotation speed interval, marking the time when the rotation speed value of the drive shaft for crushing of the single lignite crushing device is not in the safe rotation speed interval as T2, and marking the total time when the rotation speed value of the drive shaft for crushing of the lignite crushing device is not in the safe rotation speed interval as T1;
setting a single abnormal time threshold; acquiring the times of times when the rotation speed value of the driving shaft for crushing of the lignite crushing device is not in a safe rotation speed interval, and acquiring the times of times when the rotation speed value of the driving shaft for crushing of the lignite crushing device is not in the safe rotation speed interval, wherein T2 is larger than a single abnormal time threshold; the method comprises the steps of marking the times of times when the rotating speed value of a driving shaft for crushing of the lignite crushing device is not in a safe rotating speed interval as E2, and marking the times of times when the rotating speed value of the driving shaft for crushing of the lignite crushing device is not in the safe rotating speed interval as E1, wherein T2 is larger than a single abnormal time threshold value;
calculating a crushing abnormality evaluation value, wherein the expression is as follows:wherein Pyo is a crushing abnormality evaluation value.
2. The data analysis-based electric heating type lignite crushing and conveying control method is characterized by comprising the following steps of: in the step S3, calculating a lignite crushing effect evaluation coefficient by normalizing the pressure uniform average value, the crushing effect change coefficient and the crushing abnormality evaluation value;
setting an effect evaluation first threshold and an effect evaluation second threshold; comparing the lignite crushing effect evaluation coefficient with the effect evaluation first threshold value and the effect evaluation second threshold value to generate crushing effect signals with different grades:
when the lignite crushing effect evaluation coefficient is smaller than the effect evaluation first threshold value, generating a first-stage crushing effect signal; when the lignite crushing effect evaluation coefficient is larger than or equal to the effect evaluation first threshold value and smaller than or equal to the effect evaluation second threshold value, generating a secondary crushing effect signal; and when the lignite crushing effect evaluation coefficient is larger than the effect evaluation second threshold value, generating a three-level crushing effect signal.
3. The data analysis-based electric heating type lignite crushing and conveying control method is characterized by comprising the following steps of: in step S4, the transportation speed of the transportation lignite transported to the transportation conveyor of the electric heating link is adjusted:
generating a transport stopping signal when generating the three-level crushing effect signal; generating a transportation unchanged signal when generating a first-stage crushing effect signal;
when a secondary crushing effect signal is generated, an adjustment transportation signal is generated, and the initial transportation speed is adjusted according to a lignite crushing effect evaluation coefficient corresponding to the secondary crushing effect signal;
setting an initial transportation speed; calculating a secondary adjustment transportation speed, wherein the expression is as follows:wherein, ets, cs, sigma are respectively a secondary transport speed, an initial transport speed and a speed adjustment coefficient.
4. An electric heating type lignite crushing and conveying control system based on data analysis, which is used for realizing the electric heating type lignite crushing and conveying control method based on data analysis as claimed in any one of claims 1-3, and is characterized in that: the system comprises a data processing module, an information acquisition module, an effect judging module and a transportation adjusting module, wherein the information acquisition module, the effect judging module and the transportation adjusting module are in communication connection with the data processing module;
the information acquisition module acquires conveying process information, and sends the conveying process information to the data processing module, so that a uniform pressure average value and a crushing effect change coefficient are obtained through calculation;
the information acquisition module acquires crushing abnormal information, sends the crushing abnormal information to the data processing module, and calculates to obtain a crushing abnormal evaluation value;
calculating the lignite crushing effect evaluation coefficient by normalizing the pressure uniform average value, the crushing effect change coefficient and the crushing abnormality evaluation value through a data processing module; the effect judging module generates crushing effect signals of different grades through comparison of the lignite crushing effect evaluation coefficient with the effect evaluation first threshold value and the effect evaluation second threshold value;
and the transportation regulating module regulates the transportation speed of the lignite transported to the transportation conveyor belt of the electric heating link according to the initial transportation speed and the lignite crushing effect evaluation coefficient.
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