CN113359898B - Temperature control method, device and system for feed granulating system and storage medium - Google Patents
Temperature control method, device and system for feed granulating system and storage medium Download PDFInfo
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- CN113359898B CN113359898B CN202110661950.9A CN202110661950A CN113359898B CN 113359898 B CN113359898 B CN 113359898B CN 202110661950 A CN202110661950 A CN 202110661950A CN 113359898 B CN113359898 B CN 113359898B
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- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23N—MACHINES OR APPARATUS FOR TREATING HARVESTED FRUIT, VEGETABLES OR FLOWER BULBS IN BULK, NOT OTHERWISE PROVIDED FOR; PEELING VEGETABLES OR FRUIT IN BULK; APPARATUS FOR PREPARING ANIMAL FEEDING- STUFFS
- A23N17/00—Apparatus specially adapted for preparing animal feeding-stuffs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
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Abstract
The invention discloses a temperature control method of a feed granulating system, which comprises the steps of respectively carrying out difference value operation on N groups of continuously collected temperature value parameters and standard temperature when the temperature difference value between a temperature value and the standard temperature exceeds a preset temperature difference range to obtain N groups of temperature difference value parameters; determining the accumulated temperature difference values and the temperature difference change trend data of the N groups of temperature difference value parameters according to the N groups of temperature difference value parameters; and determining and adjusting the steam variation at the inlet of the modulator according to at least two data in the Nth group of temperature difference value parameters, the accumulated temperature difference value and the temperature difference variation trend data. The deviation condition between the temperature value of modulator entrance and the standard temperature is gone up from different convenient analyses in this application to use this to set for the more accurate change volume that steam lets in the volume for the basis, guaranteed the accuracy and the stability that temperature control adjusted. The application also provides a temperature control device and system of the feed granulating system and a computer readable storage medium, which have the beneficial effects.
Description
Technical Field
The invention relates to the technical field of feed production, in particular to a temperature control method, a temperature control device and a temperature control system of a feed granulating system and a computer readable storage medium.
Background
The feed granulation is equipment for preparing feed granules, and mainly comprises an upper modulator, an upper retainer, a lower modulator and a granulator which are connected in sequence; and is also provided with a steam pipeline and a feeder. In the process of preparing the feed particles, high-temperature steam and feed powder are introduced into the upper modulator by the steam pipeline and the feeder according to a certain steaming ratio. The feed powder entering the upper modulator is scattered by high-temperature steam, fully mixed and heated in the feed granulating process, and finally enters the granulator for granulation after sequentially passing through the upper retainer, the lower retainer and the lower modulator; in the process, the high-temperature steam can fully break up the feed powder to prevent the feed powder from agglomerating on one hand; on the other hand, the feed powder fully plays a role in sterilizing and killing viruses at high temperature in the process of passing through the upper retainer, the lower modulator and other equipment.
The amount of the high-temperature steam introduced into the upper modulator directly influences the temperature of the feed powder in the upper modulator, even the upper retainer, the lower retainer and the lower modulator. The higher the temperature in the upper modulator is, the higher the humidity is, the too high humidity can cause the feed powder to agglomerate and influence the feed granulation; and the feed powder is difficult to achieve the effects of sterilizing and killing viruses due to the low temperature. Therefore, how to accurately regulate and control the temperature in the upper modulator is one of the key factors of feed granulation.
Disclosure of Invention
The invention aims to provide a temperature control method, a temperature control device, a temperature control system and a computer readable storage medium of a feed granulating system, which can improve the accuracy of temperature control and adjustment of the feed granulating system to a certain extent, are favorable for maintaining the stability of temperature and ensure the quality of feed particles.
In order to solve the technical problem, the invention provides a temperature control method of a feed granulating system, which comprises the following steps:
collecting temperature values at an inlet of an upper modulator according to a preset time interval;
when the temperature difference value between the temperature value and the standard temperature exceeds a preset temperature difference range, taking N groups of the temperature values acquired continuously as temperature value parameters, and respectively performing difference value operation with the standard temperature to acquire N groups of temperature difference value parameters; wherein N is a positive integer greater than 1;
determining and collecting the accumulated temperature difference values and the temperature difference change trend data of N groups of temperature value parameters according to N groups of temperature difference value parameters;
and determining and adjusting the steam variation at the inlet of the modulator according to at least two items of data in the temperature difference value parameter corresponding to the Nth group of temperature value parameters, the accumulated temperature difference value and the temperature difference variation trend data.
In an optional embodiment of the present application, the determining and acquiring the accumulated temperature difference values and the temperature difference change trend data of the N groups of temperature value parameters according to the N groups of temperature value parameters includes:
summing the N groups of temperature difference value parameters to obtain the accumulated temperature difference value;
and performing difference calculation on the temperature difference value parameters of the Nth group and the first group to determine the temperature difference change trend data.
In an alternative embodiment of the present application, determining the amount of change in the vapor at the inlet of the modulator comprises:
according to the steam variation formula: d ═ x1·t1+x2·T+x3Δ t, determining the steam variation, wherein d is the steam variation of the steam control quantity; t is t1The temperature difference value parameter is a first group, T is the accumulated temperature difference value, and delta T is the temperature difference change trend data; x is the number of1、x2、x3The first, second and third proportionality coefficients are respectively a predetermined constant coefficient.
In an alternative embodiment of the present application, determining the amount of change in the vapor at the inlet of the modulator comprises:
when the steam variation is larger than 0, the size of the steam variation is the size of the steam reduction;
and when the steam variation is smaller than 0, the product of the steam variation and the preset gain parameter is the steam increase.
In an alternative embodiment of the present application, collecting the temperature value at the inlet of the upper modulator at predetermined time intervals comprises:
when the temperature value is lower than the alarm threshold value, the preset time interval for subsequently collecting the temperature value is a first preset time interval;
when the temperature value is higher than the alarm threshold value, the preset time interval for subsequently collecting the temperature value is a second preset time interval; wherein the first preset time interval is less than the second preset time interval.
In an optional embodiment of the present application, before collecting the temperature value at the inlet of the upper modulator at the predetermined time interval, the method further includes:
controlling the upper modulator to rotate forwards and reversely repeatedly and keeping the bypass valve open;
and controlling a steam pipeline and a feeder to simultaneously introduce steam and feed powder into the upper modulator respectively until the inlet temperature of the upper modulator reaches a preset temperature.
The application also provides a temperature control device of feed pelletization system, includes:
the data acquisition module is used for acquiring temperature values at the inlet of the upper modulator according to preset time intervals;
the first operation module is used for taking N groups of continuously acquired temperature values as temperature value parameters and respectively carrying out difference value operation with the standard temperature to obtain N groups of temperature value parameters when the temperature difference value between the temperature value and the standard temperature exceeds a preset temperature difference range; wherein N is a positive integer greater than 1;
the second operation module is used for determining the accumulated temperature difference values and the temperature difference change trend data of the N groups of temperature difference value parameters according to the N groups of temperature difference value parameters;
and the temperature adjusting module is used for determining and adjusting the steam variation at the inlet of the modulator according to at least two data of the temperature difference value parameter corresponding to the Nth group of temperature value parameters, the accumulated temperature difference value and the temperature difference variation trend data.
In an optional embodiment of the present application, the first operation module is configured to perform summation operation on N sets of the temperature difference value parameters to obtain the accumulated temperature difference value; and performing difference calculation on the temperature difference value parameters of the Nth group and the first group to determine the temperature difference change trend data.
The application also provides a temperature control system of feed pelletization system, includes: the steam pipelines are respectively used for introducing steam and feed powder into the upper modulator;
a temperature sensor for acquiring a temperature value of an inlet position of the upper modulator;
and a processor connected to the temperature sensor and the steam pipeline, respectively, for performing the steps of the temperature control method of the feed granulation system according to any of the above-mentioned temperature values.
The present application also provides a computer readable storage medium for storing a computer program, the computer program being stored on the computer readable storage medium and when being executed by a processor, the computer program realizing the steps of the method for temperature control of a feed pelleting system as claimed in any one of the above.
The temperature control method of the feed granulating system comprises the steps of collecting temperature values at an inlet of an upper modulator according to preset time intervals; when the temperature difference value between the temperature value and the standard temperature exceeds the preset temperature difference range, taking N groups of temperature values obtained by continuous acquisition as temperature value parameters, and respectively carrying out difference value operation with the standard temperature to obtain N groups of temperature value parameters; wherein N is a positive integer greater than 1; determining and acquiring the accumulated temperature difference values and the temperature difference change trend data of the N groups of temperature value parameters according to the N groups of temperature value parameters; and determining and adjusting the steam variation at the inlet of the modulator according to at least two items of data in the temperature difference value parameter, the accumulated temperature difference value and the temperature difference variation trend data corresponding to the Nth group of temperature value parameters.
When the difference between the temperature value at the inlet position of the upper modulator and the standard temperature is large, N groups of temperature values are continuously collected to serve as temperature value parameters, the temperature value parameters serve as the basis for determining and adjusting the variable quantity of the steam input quantity at the inlet of the upper modulator, and the accumulated temperature difference value and the temperature difference change trend data of the temperature value parameters relative to the standard temperature in the time period of continuously collecting the N groups of temperature value parameters are analyzed; obviously, in the temperature difference value parameters of the N groups of temperature values relative to the standard temperature, the nth group of temperature difference value parameters is equivalent to the difference value of the current temperature value relative to the standard temperature; the accumulated temperature difference values of the N groups of temperature difference value parameters reflect the integral difference of the temperature values in a period of time relative to the standard temperature to a certain extent, and the temperature difference change trend data reflects the change trend of the temperature values in a period of time relative to the standard temperature to a certain extent; in the application, at least two data in the data reflecting the difference situation of the inlet temperature value of the upper modulator relative to the standard temperature from three different aspects are used as the basis for determining the variation of the steam inlet quantity, and compared with the case that only the difference value between the current temperature value and the standard temperature is used as the adjustment basis, the variation of the steam inlet quantity determined in the application is more accurate, the temperature fluctuation range in the temperature regulation process is prevented from being too large on the basis of ensuring that the inlet temperature of the upper modulator is accurately regulated to be within the required range, and the temperature stability is ensured.
From this, from the difference between the temperature value of different convenient analysis go up modulator entrance and the standard temperature in this application to set for the change volume of more accurate steam admission volume, guaranteed the accuracy and the stability of temperature control regulation, be favorable to promoting the preparation effect of fodder pelletization.
The application also provides a temperature control device and system of the feed granulating system and a computer readable storage medium, which have the beneficial effects.
Drawings
In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic flow chart of a temperature control method of a feed granulating system provided in an embodiment of the present application;
fig. 2 is a block diagram of a temperature control device of a feed granulating system according to an embodiment of the present invention.
Detailed Description
In the feed granulating system, the inlet position of the upper modulator is simultaneously introduced with high-temperature steam and feed powder, and obviously, the more the feed powder is, the more the heat of the high-temperature steam can be absorbed. It can be seen that the steaming ratio between the high-temperature steam and the feed powder introduced at the inlet of the upper modulator directly influences the temperature at the inlet of the upper modulator.
The temperature of the feed powder fed into the upper modulator is uncertain due to the fluctuation of the ambient temperature in different seasons and different times; and because the different equipment model types in different pelletizing systems have different requirements on the steam ratio, the fixed steam ratio cannot be adopted in the actual feed pelletizing process.
In addition, the high-temperature steam conveyed by the steam pipeline cannot ensure a constant temperature, and even if the feeder uniformly feeds the feed powder into the modulator, the feed powder feeding amount is difficult to ensure absolutely uniform; therefore, in the process of feed granulation, the temperature of the inlet position of the upper modulator needs to be monitored in real time, once the temperature value deviates from the standard temperature value, the opening size of the equal proportion valve needs to be adjusted in time to adjust the introduction amount of high-temperature steam, the steam ratio is changed, the temperature value meets the requirement of granulation, and the temperature of the upper modulator and the temperature of the subsequent retainer and other devices can meet the requirement of granulation.
The temperature value and the standard temperature deviation of last modulator entry are great in the consideration in this application, only come the variable quantity of the volume of confirming control regulation high temperature steam and letting in according to current temperature value and standard temperature's deviation size, can have certain contingency because current temperature value exists, and the steam variable quantity that leads to determining is inaccurate, and then leads to the temperature value to have the condition of fluctuation repeatedly, finally influences temperature regulation efficiency.
Therefore, the technical scheme capable of accurately and effectively adjusting the temperature of the inlet of the upper modulator is provided in the application.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, fig. 1 is a schematic flow chart of a temperature control method of a feed granulating system provided in an embodiment of the present application, and the temperature control method of the feed granulating system may include:
s11: the temperature values at the inlet of the upper modulator are collected at predetermined time intervals.
The predetermined time interval may be set to 2s, or may be set to other time intervals, and is not particularly limited in this embodiment.
The upper modulator and its associated equipment may be preheated at the beginning of the start-up of the entire feed pelleting system.
Optionally, the upper modulator may be controlled to rotate forward and backward repeatedly, and the bypass valve is kept open;
and controlling the steam pipeline and the feeder to simultaneously introduce steam and feed powder into the upper modulator respectively until the inlet temperature of the upper modulator reaches a preset temperature.
The upper modulator positively rotates to enable the feed powder to enter the upper modulator and flow into the retainer and the lower modulator; and the upper modulator is reversely rotated, so that the feed powder entering the upper modulator can be discharged, and the feed powder which is not fully sterilized is prevented from flowing to the granulator. Of course, to avoid other situations, the bypass valve may be further opened so that even if the flow of meal is up the brewer, it does not flow into the granulator.
In addition, the feed powder is introduced while high-temperature steam is introduced for preheating, so that the feed powder is absorbed, and the phenomenon that the humidity in the upper modulator is too high is avoided.
S12: and performing difference operation on the temperature value and the standard temperature to obtain a temperature difference value.
The standard temperature is set according to the optimum temperature at the inlet of the upper conditioner during the feed granulation process. Of course, the corresponding standard temperature of the feed granulating equipment can be different according to different types of feed granulating equipment, and the specific temperature can be determined by repeated experiments.
S13: and judging whether the temperature difference value is within a preset temperature difference range, if so, entering S11, and if not, entering S14.
The preset temperature difference range can be determined according to the optimal temperature range interval at the inlet of the upper modulator. It is understood that the temperature difference value is positive or negative, and the corresponding preset temperature difference range should be a temperature range centered at 0 degrees.
When the temperature difference value is within the preset temperature difference range, the current temperature value and the standard temperature deviation of the inlet of the upper modulator are not large, and the introduction amount of the high-temperature steam introduced into the inlet of the upper modulator does not need to be adjusted. On the contrary, if the temperature difference value is not within the preset temperature difference range, the temperature needs to be adjusted when the current temperature value is too high or too low.
S14: and N groups of continuously acquired temperature values are used as temperature value parameters and are respectively subjected to difference value operation with the standard temperature to obtain N groups of corresponding temperature difference value parameters.
Wherein N is a positive integer greater than 1.
When actual data acquisition, the group number of temperature value parameter should not be too little, avoids influencing the accuracy of the steam variable quantity of follow-up determination, should not too much yet, avoids because the time that gathers temperature value parameter and consume is overlength, leads to carrying out untimely of adjusting to the temperature based on the steam variable quantity, and the fodder pelletization effect is poor. For example, the value of N may be a positive integer of about 10.
It should be noted that, when the temperature difference value of the temperature value measured at a certain time with respect to the standard temperature exceeds the preset temperature range, and the temperature difference value of the temperature value measured before the certain time with respect to the standard temperature is within the preset temperature range, the temperature value measured at the certain time may be used as a first group of temperature value parameters in the N groups of temperature value parameters, or the temperature value measured at the first time after the certain time may be used as a first group of temperature value parameters in the N groups of temperature value parameters, which is not limited in this embodiment.
S15: and determining the accumulated temperature difference values and the temperature difference change trend data of the N groups of temperature difference value parameters according to the N groups of temperature difference value parameters.
The accumulated temperature difference value is the accumulated condition of the temperature difference between the temperature value parameter and the standard temperature in the time period of collecting the N groups of temperature value parameters, and the size of the accumulated temperature difference value represents the deviation condition of the whole temperature value parameter in the time period relative to the standard temperature. Obviously, this data can compensate to some extent for the occasional lack of single-pass temperature value parameters relative to standard temperature deviation.
In an optional embodiment, the accumulated temperature difference value may be a sum of temperature difference value parameters corresponding to each temperature value parameter, or an average value of each temperature difference value parameter, which is not specifically limited in this application.
And for the temperature difference change trend data, the deviation of the temperature value parameter relative to the standard temperature is gradually increased or decreased or tends to be stable in the time of acquiring the N groups of temperature value parameters to a certain extent. Obviously, the setting of the size of the steam variable quantity is correspondingly different according to different variation trends of the temperature difference value parameters, and the reasonability and the accuracy of the steam variable quantity are favorably improved.
Alternatively, the temperature difference variation trend data may be a difference between the nth set of temperature difference value parameters and the first set of temperature difference value parameters. Of course, a linear fitting may be performed on the N sets of temperature difference value parameters, and the slope of the linear fitting may be used as the temperature difference change trend, so as to implement the technical solution of the present application.
S16: and determining the steam variation according to at least two items of data in the temperature difference value parameter, the accumulated temperature difference value and the temperature difference variation trend data corresponding to the Nth group of temperature value parameters.
Based on the above discussion, the accumulated temperature difference value and the temperature difference change trend data respectively represent the deviation condition of the temperature value parameter relative to the standard temperature from different aspects; the temperature difference parameter corresponding to the nth group of temperature value parameters is obviously the deviation value of the temperature value parameter at the current moment relative to the standard temperature, that is to say, the temperature difference parameter represents the situation that the temperature value at the current moment actually deviates from the standard temperature to a certain extent.
Therefore, in the embodiment, at least two data of the nth group of temperature difference value parameters, the accumulated temperature difference value and the temperature difference change trend data are adopted, and most preferably, the steam change amount is set by simultaneously referring to the data of the nth group of temperature difference value parameters, the accumulated temperature difference value and the temperature difference change trend data, which is beneficial to improving the setting accuracy of the steam change amount.
S17: and controlling the steam introduction amount according to the steam variation, and entering S11.
To sum up, when the temperature to the fodder pelletization in-process in this application is controlled and is adjusted, not only adjust the volume of letting in high temperature steam according to the temperature size of the entry position of modulator under the present situation, but the difference in temperature value parameter of the multiunit temperature value of gathering for the standard temperature in a period of time from different aspects is analyzed, more accurate reasonable steam variation is confirmed for the deviation condition of standard temperature difference in each different aspect to comprehensive temperature value parameter, thereby guarantee to adjust the validity of the temperature in the modulator according to this steam variation, guarantee adjustment efficiency, and then promote the quality of fodder granule.
Based on the above discussion, in an optional embodiment of the present application, the determining the steam variation amount based on at least two data of the nth set of temperature difference value parameter, the accumulated temperature difference value, and the temperature difference variation trend data may include:
according to the steam variation formula: d ═ x1·t1+x2·T+x3Δ t, determining a steam variation, wherein d is the steam variation of the steam control quantity; t is t1The temperature difference value parameters are a first group, T is an accumulated temperature difference value, and delta T is temperature difference change trend data; x is the number of1、x2、x3The first scale coefficient, the second scale coefficient and the third scale coefficient are respectively, and are all predetermined constant coefficients.
The method for determining the steam variation provided in this embodiment is to comprehensively determine the steam variation by simultaneously referring to the nth set of temperature difference parameter, the accumulated temperature difference value, and the temperature difference variation trend data.
For the first proportional coefficient, the second proportional coefficient and the third proportional coefficient in the application, multiple groups of temperature data and different steam variation values can be collected and controlled in a mode of adopting a neural network algorithm according to the constant coefficients set by actual tests or experience of workers, so that a large amount of sample data can be collected and obtained, and the sample data is input into a neural network for learning training, so that three optimized proportional coefficients can be obtained. Of course, other embodiments for determining the three scaling factors are not excluded from this application.
Generally, in the process of granulating the feed, the temperature of the inlet position of the upper modulator does not fluctuate too much within the short time of acquiring the N groups of temperature value parameters. Therefore, in most cases, the N sets of temperature difference parameters should be mostly greater than 0 (i.e., the temperature value parameter is greater than the standard temperature) or mostly less than 0 (i.e., the temperature value parameter is less than the standard temperature).
Based on the above formula of the amount of change of steam, it can be determined that the amount of change of steam is less than 0 when the temperature difference parameter is substantially less than 0, i.e., when the temperature at the inlet of the upper modulator is lower. And when the temperature difference parameter is basically larger than 0, namely the temperature of the inlet position of the upper modulator is higher than 0, the steam variation is larger than 0.
Therefore, in an alternative embodiment of the present application, the method may further include:
when the steam variation is larger than 0, the size of the steam variation is the size of the steam reduction;
and when the steam variation is smaller than 0, the product of the steam variation and the preset gain parameter is equal to the steam increase.
It should be noted that, for the temperature in the upper modulator, it is easier to modulate the state when the temperature is higher, and when the temperature is higher, the temperature can be quickly reduced by only reducing the introduction amount of the high-temperature steam; when the temperature is low, the introduction amount of the high-temperature steam is only slightly increased, and the rapid temperature rise is difficult to realize. In addition, when the temperature is low as compared with the temperature which is high, the temperature is likely to drop below the required minimum sterilization temperature in a very short time, and at this time, the temperature for sterilization and sterilization of the feed meal in the upper, retainer, and lower regulators is insufficient, and after the feed meal at that time flows into the granulator, if viruses exist, all feed pellets previously prepared and stored in the granulator are infected with the viruses, and all feed pellets are unusable. Therefore, the adjustment difficulty is higher under the low-temperature condition, and once the adjustment is not timely, the economic loss is higher.
Therefore, in this embodiment, after the size of the steam variation is determined, if the current temperature is higher, the steam variation may be directly used as the steam reduction amount; when the temperature is lower, the variable quantity is expanded by a certain factor, namely, the result of the product operation with the preset gain parameter is used as the steam increment, namely, compared with the high temperature with the same deviation with the standard temperature, the regulation amplitude of the steam input quantity is larger under the low temperature condition, so as to improve the response speed in the low temperature state, thereby ensuring that the temperature of the upper modulator can be quickly improved.
As previously mentioned, when the temperature drops below the required minimum sterilization temperature, this results in insufficient sterilization of the feed meal, and therefore a more rapid increase in temperature is required when the temperature in the upper modulator is lower. For this reason, in another optional embodiment of the present application, the method may further include:
when the temperature value is lower than the alarm threshold value, the preset time interval of the subsequent temperature value acquisition is a first preset time interval;
when the temperature value is higher than the alarm threshold value, the preset time interval of the subsequent temperature value acquisition is a second preset time interval; wherein the first predetermined time interval is less than the second predetermined time interval.
Because when last modulator temperature was on the low side, need quick response to the low temperature condition and heat up, and on the low side of the temperature value, when carrying out corresponding control to the temperature, need gather multiunit temperature value again as the foundation of confirming the steam variation, for this reason, in this embodiment in order to avoid delaying temperature regulation because of gathering temperature value data, lead to the temperature to drop to the minimum disinfection temperature of requirement, increase the sampling frequency of temperature value when the temperature is less than alarm threshold value, and then promote temperature regulation's response speed.
Meanwhile, the system can also send an alarm to the working personnel in time so as to arouse the attention of the working personnel, observe the temperature change condition of the period of time in time and avoid the occurrence of feed particles infected by viruses due to insufficient disinfection temperature.
The temperature control device of the feed granulating system provided by the embodiment of the invention is described below, and the temperature control device of the feed granulating system described below and the temperature control method of the feed granulating system described above can be correspondingly referred to.
Fig. 2 is a block diagram illustrating a temperature control device of a feed granulating system according to an embodiment of the present invention, and the temperature control device of the feed granulating system according to fig. 2 may include:
a data acquisition module 100 for acquiring a temperature value at an inlet of the upper modulator at predetermined time intervals;
the first operation module 200 is configured to, when the temperature difference value between the temperature value and the standard temperature exceeds a preset temperature difference range, perform difference operation with the standard temperature by using N groups of the continuously acquired temperature values as temperature value parameters to obtain N groups of temperature difference value parameters; wherein N is a positive integer greater than 1;
the second operation module 300 is configured to determine, according to the N sets of temperature difference value parameters, an accumulated temperature difference value and temperature difference change trend data of the N sets of temperature difference value parameters;
and the temperature adjusting module 400 is configured to determine and adjust a steam variation at an inlet of the modulator according to at least two data of the temperature difference parameter corresponding to the nth group of temperature value parameters, the accumulated temperature difference value, and the temperature difference variation trend data.
In an optional embodiment of the present application, the first operation module 200 is configured to perform a summation operation on N sets of the temperature difference value parameters to obtain the accumulated temperature difference value; and performing difference calculation on the temperature difference value parameters of the Nth group and the first group to determine the temperature difference change trend data.
In an alternative embodiment of the present application, the attemperation module 400 is configured to: d ═ x1·t1+x2·T+x3Δ t, determining the steam variation d; t is t1The temperature difference value parameter is a first group, T is the accumulated temperature difference value, and delta T is the temperature difference change trend data;
x1、x2、x3the first scale coefficient, the second scale coefficient and the third scale coefficient are respectively, and are all predetermined constant coefficients.
In an optional embodiment of the present application, the temperature adjustment module 400 is configured to, when the steam variation is greater than 0, determine that the steam variation is a steam reduction amount; and when the steam variation is smaller than 0, the product of the steam variation and the preset gain parameter is the steam increase.
In an optional embodiment of the present application, the data acquisition module 100 is configured to, when the temperature value is lower than the alarm threshold, set a preset time interval for subsequently acquiring the temperature value to be a first preset time interval; when the temperature value is higher than the alarm threshold value, the preset time interval for subsequently collecting the temperature value is a second preset time interval; wherein the first preset time interval is less than the second preset time interval.
In an optional embodiment of the present application, the apparatus further comprises a preheating module, configured to control the upper modulator to rotate forward and backward repeatedly, and keep the bypass valve open; and controlling a steam pipeline and a feeder to simultaneously introduce steam and feed powder into the upper modulator respectively until the inlet temperature of the upper modulator reaches a preset temperature.
The temperature control device of the feed granulating system of this embodiment is used for implementing the temperature control method of the feed granulating system, and therefore, the specific implementation of the temperature control device of the feed granulating system can be found in the previous embodiment of the temperature control method of the feed granulating system, and will not be described herein again.
Also provided herein are embodiments of a temperature control system for a feed pelleting system, the system can include:
the steam pipelines are respectively used for introducing steam and feed powder into the upper modulator;
a temperature sensor for acquiring a temperature value of an inlet position of the upper modulator;
a processor connected to the temperature sensor and to the steam line, respectively, for performing the steps of the method for controlling the temperature of a feed granulation system as defined in any one of the preceding claims, depending on the temperature value.
The processor performing the method of temperature control of a feed pelleting system may include the steps of:
collecting temperature values at an inlet of an upper modulator according to a preset time interval;
when the temperature difference value between the temperature value and the standard temperature exceeds the preset temperature difference range, taking N groups of temperature values obtained by continuous acquisition as temperature value parameters, and respectively carrying out difference value operation with the standard temperature to obtain N groups of temperature value parameters; wherein N is a positive integer greater than 1;
determining and acquiring the accumulated temperature difference values and the temperature difference change trend data of the N groups of temperature value parameters according to the N groups of temperature difference value parameters;
and determining and adjusting the steam variation at the inlet of the modulator according to at least two items of data in the temperature difference value parameter, the accumulated temperature difference value and the temperature difference variation trend data corresponding to the Nth group of temperature value parameters.
The processor in the embodiment finally determines more accurate control quantity of steam introduction quantity by acquiring the temperature data of the inlet position of the upper modulator and analyzing the deviation conditions of the temperature data and the standard temperature from different aspects, so that the accuracy of temperature regulation response in the upper modulator is ensured, the stability of the temperature of each device in the whole feed granulating system is favorably maintained, and the good granulating quality is further ensured.
Also provided in this application is an embodiment of a computer-readable storage medium for storing a computer program, the computer program being stored on the computer-readable storage medium and when being executed by a processor, for carrying out the steps of the method for temperature control of a feed granulation system as defined in any of the previous claims.
The computer-readable storage medium may include: random Access Memory (RAM), memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, CD-ROM, or any other form of storage medium known in the art.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include elements inherent in the list. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. In addition, parts of the above technical solutions provided in the embodiments of the present application, which are consistent with the implementation principles of corresponding technical solutions in the prior art, are not described in detail so as to avoid redundant description.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A method of controlling the temperature of a feed pelleting system, comprising:
collecting temperature values at an inlet of an upper modulator according to a preset time interval;
when the temperature difference value between the temperature value and the standard temperature exceeds a preset temperature difference range, taking N groups of the temperature values acquired continuously as temperature value parameters, and respectively performing difference value operation with the standard temperature to acquire N groups of temperature difference value parameters; wherein N is a positive integer greater than 1;
determining the accumulated temperature difference values and the temperature difference change trend data of the N groups of temperature difference value parameters according to the N groups of temperature difference value parameters;
and determining and adjusting the steam variation at the inlet of the modulator according to the temperature difference value parameter corresponding to the Nth group of temperature value parameters, the accumulated temperature difference value and the temperature difference variation trend data.
2. The method for controlling temperature of feed granulating system as claimed in claim 1, wherein determining and collecting the accumulated temperature difference value and temperature difference variation trend data of N groups of said temperature value parameters based on N groups of said temperature value parameters comprises:
summing the N groups of temperature difference value parameters to obtain the accumulated temperature difference value;
and performing difference operation on the temperature difference value parameters of the Nth group and the first group to determine the temperature difference change trend data.
3. The method of temperature control for a feed pelleting system as recited in claim 2 wherein determining the change in steam at the inlet of the modulator comprises:
according to the steam variation formula: d ═ x1·t1+x2·T+x3Δ t, determining the steam variation d; wherein, t1The temperature difference value parameter is the Nth group, T is the accumulated temperature difference value, and delta T is the temperature difference change trend data; x is the number of1、x2、x3The first scale coefficient, the second scale coefficient and the third scale coefficient are respectively, and are all predetermined constant coefficients.
4. The method of temperature control for a feed pelleting system as recited in claim 3 wherein determining the change in steam at the inlet of the modulator comprises:
when the steam variation is larger than 0, the size of the steam variation is the size of the steam reduction;
and when the steam variation is smaller than 0, the product of the steam variation and the preset gain parameter is the steam increase.
5. The temperature control method of a feed granulating system as set forth in any of claims 1 to 4, wherein the collecting of the temperature value at the inlet of the upper modulator at predetermined time intervals comprises:
when the temperature value is lower than the alarm threshold value, the preset time interval for subsequently collecting the temperature value is a first preset time interval;
when the temperature value is higher than the alarm threshold value, the preset time interval for subsequently collecting the temperature value is a second preset time interval; wherein the first preset time interval is less than the second preset time interval.
6. The method for controlling temperature of a feed pelleting system as recited in claim 1, wherein before collecting the temperature value at the inlet of the upper modulator at predetermined time intervals, further comprising:
controlling the upper modulator to rotate forwards and reversely repeatedly and keeping the bypass valve open;
and controlling a steam pipeline and a feeder to simultaneously introduce steam and feed powder into the upper modulator respectively until the inlet temperature of the upper modulator reaches a preset temperature.
7. A temperature control device for a feed pelleting system, comprising:
the data acquisition module is used for acquiring temperature values at the inlet of the upper modulator according to preset time intervals;
the first operation module is used for taking N groups of continuously acquired temperature values as temperature value parameters and respectively carrying out difference value operation with the standard temperature to obtain N groups of temperature value parameters when the temperature difference value between the temperature value and the standard temperature exceeds a preset temperature difference range; wherein N is a positive integer greater than 1;
the second operation module is used for determining the accumulated temperature difference values and the temperature difference change trend data of the N groups of temperature difference value parameters according to the N groups of temperature difference value parameters;
and the temperature regulating module is used for determining and regulating the steam variation at the inlet of the modulator according to the temperature difference value parameter corresponding to the Nth group of temperature value parameters, the accumulated temperature difference value and the temperature difference variation trend data.
8. The temperature control device of a feed granulating system as claimed in claim 7, wherein the first operation module is configured to perform a summation operation on N sets of the temperature difference value parameters to obtain the accumulated temperature difference value; and performing difference calculation on the temperature difference value parameters of the Nth group and the first group to determine the temperature difference change trend data.
9. A temperature control system for a feed pelleting system, comprising: the steam pipelines are respectively used for introducing steam and feed powder into the upper modulator;
a temperature sensor for acquiring a temperature value of an inlet position of the upper modulator;
a processor connected to said temperature sensor and to said steam line, respectively, for carrying out the steps of the temperature control method of the feed granulation system as claimed in any one of claims 1 to 6, depending on said temperature value.
10. A computer-readable storage medium for storing a computer program, the computer program being stored on the computer-readable storage medium and when being executed by a processor, the computer program implementing the steps of the method for temperature control of a feed granulation system as defined in any one of the claims 1 to 6.
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| CN102984914B (en) * | 2011-09-02 | 2016-01-27 | 联想(北京)有限公司 | A kind of method and electronic installation controlling temperature of electronic device |
| CN107373725A (en) * | 2017-07-24 | 2017-11-24 | 江苏天蓬饲料有限公司 | A kind of feed granules forming machine |
| CN208510055U (en) * | 2018-01-30 | 2019-02-19 | 宁夏海永生态渔业有限公司 | Feed modifying device |
| CN109569408A (en) * | 2019-01-17 | 2019-04-05 | 吴昊凯 | A kind of livestock feed maker |
| CN110269521A (en) * | 2019-05-06 | 2019-09-24 | 深圳市洲海电子有限公司 | A kind of temperature control system of wood pellet oven |
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