CN118903839B

CN118903839B - An adaptive energy-saving control method and system for falling film evaporators

Info

Publication number: CN118903839B
Application number: CN202411107555.6A
Authority: CN
Inventors: 李从宇; 王向华; 李从辉
Original assignee: Hubei Chuyu Petrochemical Equipment Co ltd
Current assignee: Hubei Chuyu Petrochemical Equipment Co ltd
Priority date: 2024-08-13
Filing date: 2024-08-13
Publication date: 2025-11-04
Anticipated expiration: 2044-08-13
Also published as: CN118903839A

Abstract

This application relates to an adaptive energy-saving control method and system for a falling film evaporator, belonging to the field of power control. The method includes acquiring temperature values at multiple preset locations in the evaporation chamber, the density of the concentrate in the separation chamber, video information of dripping liquid at the top of the separation chamber, infrared imaging video of the top of the separation chamber, and the power of the compressor. If a first target location has a temperature value lower than a preset temperature threshold, a target steam pipeline is determined from multiple backup steam pipelines based on the temperature value, dripping liquid video information, and density of the first target location. The target power required by the compressor is determined based on the temperature value and infrared imaging video of each first target location, and the compressor is controlled to operate at the target power, while the target steam pipeline is opened. This application can improve the energy-saving effect of the compressor.

Description

Self-adaptive energy-saving control method and system for falling film evaporator

Technical Field

The application relates to the field of power control, in particular to a self-adaptive energy-saving control method and system of a falling film evaporator.

Background

The MVR falling film evaporator is novel efficient energy-saving evaporation equipment mainly applied to the industries such as pharmacy, the equipment adopts a low-temperature and low-pressure steaming technology and clean energy as energy sources to generate steam, water in a medium is converted into steam through heat exchange and heat absorption to be separated out, concentrated solution with required concentration or density is obtained, the MVR falling film evaporator can utilize the steam obtained through the heat exchange and heat absorption of the medium to carry out secondary utilization, the temperature of the steam is improved through a compression fan, the steam is further conveyed into an evaporation chamber through a pipeline to carry out heat exchange and heat absorption again, so that the energy-saving effect is achieved, and therefore, in the energy source use of the MVR falling film evaporator, the electric energy use of the compression fan is relatively large. However, with the requirements of society and industry on green energy conservation and the shortage of electric power resources, how to further improve the energy-saving effect of the compression fan becomes a problem.

Disclosure of Invention

In order to improve the energy-saving effect of the compression fan, the application provides a self-adaptive energy-saving control method and a self-adaptive energy-saving control system of a falling film evaporator.

In a first aspect, the present application provides a self-adaptive energy-saving control method for a falling film evaporator, which adopts the following technical scheme:

An adaptive energy-saving control method of a falling film evaporator, comprising the following steps:

Acquiring temperature values of a plurality of preset positions in an evaporation chamber, density of concentrated solution in a separation chamber, dropping video information at the top of the separation chamber, infrared imaging video at the top of the separation chamber and power of a compression fan;

if a first target position with the temperature value lower than a preset temperature threshold exists, determining a target steam pipeline from a plurality of standby steam pipelines based on the temperature value of the first target position, the drip video information and the density;

Determining target power to be achieved by the compression fan based on the temperature value of each first target position and the infrared imaging video;

and controlling the compression fan to operate according to the target power, and controlling a target steam pipeline to be opened.

By adopting the technical scheme, the first target position with the temperature value lower than the preset temperature threshold value is provided, the water evaporation effect of the material in the evaporation chamber is reduced, the vapor formation quality in the separation chamber is reduced, and the concentrated solution quality is reduced, so that the target vapor pipeline is determined from a plurality of standby vapor pipelines according to the temperature value of the first target position, the video information of the dropping liquid and the comprehensive determination of the density, the infrared imaging video characterizes the specific condition and the quality of vapor formation in the separation chamber, the target power required by the compression fan is comprehensively determined according to the temperature value of the first target position and the infrared imaging video, the power of the compression fan is improved, the compression fan does work on the vapor to improve the temperature of the vapor, the target power with the proper size is comprehensively determined through the temperature value of the first target position and the infrared imaging video, the compression fan is controlled to operate according to the target power, and the opening of the target vapor pipeline is controlled, so that the electric energy consumption is increased due to the overlarge target power, the temperature compensation effect is poor, the target power is determined, the proper target power can be compensated at the same time, the energy is saved, the energy is further reduced, and the energy is saved.

In another possible implementation manner, the determining the target vapor line from the plurality of backup vapor lines based on the temperature value of the first target location, the drip video information, and the density includes:

determining a temperature difference value between a temperature value of each first target position and a preset temperature threshold value, and determining a first average value of the temperature difference values;

Performing feature recognition on each frame of picture of the liquid dropping video information to obtain a first number of complete liquid drops dropped out by each heat exchange tube in each frame of picture and a second number of complete liquid drops in each frame of picture;

determining the overall dropping frequency of all heat exchange tubes based on the first quantity, and calculating a second average value of the second quantity;

determining a required number of backup vapor lines required based on the first average, the drip frequency, and the second average;

if the required number is smaller than the number of the first target positions, calculating the distance from each standby steam pipeline to each first target position, and calculating the average distance corresponding to each standby steam pipeline based on the distances;

The aforementioned required number of backup steam lines having the smallest average distance is determined as the target steam line.

In another possible implementation manner, the determining the target power to be reached by the compression fan based on the temperature value of each first target position and the infrared imaging video includes:

determining the volume of steam sprayed out of the whole heat exchange tube and the average temperature of the steam based on the infrared imaging video;

Calculating a first similarity between every two adjacent frames of pictures of the infrared imaging video and a second similarity between each frame of picture and a preset picture;

Determining a variance of the first similarity and a similarity average of the second similarity;

determining a first score based on the variance, the similarity average, the vapor volume, and the vapor average temperature;

Determining a temperature difference value between the temperature value of each first target position and a preset temperature threshold value, and determining a second score based on the temperature difference value and the number of the first target positions;

and determining the target power required to be achieved by the compression fan based on the first score and the second score.

In another possible implementation, the method further includes:

acquiring the dropping frequency, and calculating the ratio of the first fraction to the dropping frequency;

Determining the corresponding relation between the ratio and the current power of the compression fan;

And generating a training sample set based on the corresponding relation so as to train a target network model, wherein the target network model is constructed based on the ratio of the first component to the dropping frequency and the current power of the compression fan.

In another possible implementation manner, a rotatable deflector is disposed at an end of each spare steam pipeline close to the evaporation chamber, and the control target steam pipeline is opened, and then the method further includes:

if the required number is smaller than the number of the first target positions, determining an angle formed by each first target position and an associated target steam pipeline, wherein the associated target steam pipeline is the angle formed by the target steam pipeline which corresponds to each first target position and is closest to the first target position;

if a second target position with an angle larger than a preset angle threshold exists in the first target position, determining the rotation angle of the deflector on the associated target steam pipeline corresponding to the second target position based on the angle;

determining a first target position covered by the associated target steam pipeline corresponding to the second target position;

Determining a ratio of the temperature difference of the covered first target location and the temperature difference of the second target location;

The duration of time from the deflector of the associated target steam line to the rotation angle is determined based on the ratio.

In another possible implementation, the method further includes:

Mapping the corresponding relation in a preset coordinate system, and outputting the mapped preset coordinate system;

and outputting the drip video information and the infrared imaging video.

In a second aspect, the present application provides a self-adaptive energy-saving control device for a falling film evaporator, which adopts the following technical scheme:

An adaptive energy-saving control device of a falling film evaporator, comprising:

the first acquisition module is used for acquiring temperature values of a plurality of preset positions in the evaporation chamber, density of concentrated solution in the separation chamber, drip video information at the top of the separation chamber, infrared imaging video at the top of the separation chamber and power of the compression fan;

The standby pipeline determining module is used for determining a target steam pipeline from a plurality of standby steam pipelines based on the temperature value of a first target position, the video information of liquid drops and the density when the first target position with the temperature value lower than a preset temperature threshold exists;

The power determining module is used for determining target power to be reached by the compression fan based on the temperature value of each first target position and the infrared imaging video;

And the control module is used for controlling the compression fan to operate according to the target power and controlling the opening of the target steam pipeline.

By adopting the technical scheme, the first acquisition module acquires the temperature values of a plurality of preset positions in the evaporation chamber, the density of concentrated solution in the separation chamber, the drip video information at the top of the separation chamber, the infrared imaging video at the top of the separation chamber and the power of the compression fan, and the first target position with the temperature value lower than the preset temperature threshold value exists, which indicates that the water evaporation effect of materials in the evaporation chamber is reduced, so that the steam formation quality in the separation chamber is reduced and the concentrated solution quality is reduced, so that the standby pipeline determination module comprehensively determines the target steam pipeline from the plurality of standby steam pipelines according to the temperature value of the first target position, the drip video information and the density, the infrared imaging video represents the specific condition and the quality of the steam formation in the separation chamber, the power determining module comprehensively determines the target power required to be achieved by the compression fan according to the temperature value of the first target position and the infrared imaging video, the power of the compression fan is improved, the compression fan does work on steam to improve the temperature of the steam, thereby compensating the temperature of the first target position in the evaporation chamber, comprehensively determining the target power with proper size through the temperature value of the first target position and the infrared imaging video, controlling the compression fan to operate according to the target power and controlling the opening of a target steam pipeline to perform temperature compensation, increasing the electric energy consumption caused by the overlarge target power, poor temperature compensation effect caused by the overlarge target power, determining the proper target power to achieve the energy-saving effect while performing temperature compensation, combining the determined proper target steam pipeline, reducing the loss of steam energy in the temperature compensation process, thereby further achieving the effect of energy saving.

In another possible implementation manner, the backup line determining module is specifically configured to, when determining the target vapor line from the plurality of backup vapor lines based on the temperature value of the first target location, the drip video information, and the density:

In another possible implementation manner, the power determining module is specifically configured to, when determining, based on the temperature value of each first target location and the infrared imaging video, a target power that the compression fan needs to reach:

In another possible implementation, the apparatus further includes:

The second acquisition module is used for acquiring the dropping frequency and calculating the ratio of the first component to the dropping frequency;

the corresponding relation determining module is used for determining the corresponding relation between the ratio and the current power of the compression fan;

The generation module is used for generating a training sample set based on the corresponding relation so as to train a target network model, and the target network model is constructed based on the ratio of the first component to the dropping frequency and the current power of the compression fan.

In another possible implementation manner, a rotatable deflector is disposed at an end of each spare steam pipe near the evaporation chamber, and the apparatus further includes:

the angle determining module is used for determining the angle formed by each first target position and the associated target steam pipeline when the required number is smaller than the number of the first target positions, wherein the associated target steam pipeline is the angle formed by the nearest target steam pipeline corresponding to each first target position;

The rotating angle determining module is used for determining the rotating angle of the deflector on the associated target steam pipeline corresponding to the second target position based on the angle when the second target position with the angle larger than the preset angle threshold exists in the first target position;

the position determining module is used for determining a first target position covered by the associated target steam pipeline corresponding to the second target position;

a proportion determining module for determining a proportion of the temperature difference of the covered first target position and the temperature difference of the second target position;

And the duration time determining module is used for determining the duration time from the deflector of the associated target steam pipeline to the rotation angle based on the proportion.

In another possible implementation, the apparatus further includes:

the first output module is used for mapping the corresponding relation in a preset coordinate system and outputting the mapped preset coordinate system;

and the second output module is used for outputting the drip video information and the infrared imaging video.

In a third aspect, the present application provides a self-adaptive energy-saving control system for a falling film evaporator, which adopts the following technical scheme:

An adaptive energy-saving control system for a falling film evaporator, the system comprising:

The temperature sensors are arranged at a plurality of preset positions in the evaporation chamber and are used for collecting temperature values of the positions;

the density sensor is arranged in the separation chamber and used for collecting the density of the concentrated solution;

the camera device is arranged in the separation chamber and used for collecting video information of the dropping liquid at the top of the separation chamber;

The infrared imaging device is arranged in the separation chamber and is used for collecting infrared imaging videos at the top of the separation chamber;

the power sensor is used for collecting the power of the compression fan;

a plurality of backup steam lines in communication with the steam chamber and in communication with the compression blower.

The electronic equipment is in communication connection with the plurality of temperature sensors, is in communication connection with the density sensor, is in communication connection with the camera device, is in communication connection with the infrared imaging device, is in communication connection with the power sensor, and is used for acquiring temperature values of a plurality of preset positions in the evaporating chamber, density of concentrated liquid in the separating chamber, drip video information on the top of the separating chamber, infrared imaging video on the top of the separating chamber and power of the compression fan, if a first target position with the temperature value lower than a preset temperature threshold exists, a target steam pipeline is determined from a plurality of standby steam pipelines based on the temperature value of the first target position, drip video information and density, target power which needs to be achieved by the compression fan is determined based on the temperature value of each first target position and the infrared imaging video, the compression fan is controlled to operate according to the target power, and the target steam pipeline is controlled to be opened. And for performing an adaptive energy saving control method of a falling film evaporator according to any one of the first aspect.

In a fourth aspect, the present application provides a computer readable storage medium, which adopts the following technical scheme:

a computer-readable storage medium, which when executed in a computer, causes the computer to perform a method of adaptive energy saving control of a falling film evaporator according to any one of the first aspects.

In summary, the present application includes at least one of the following beneficial technical effects:

The method comprises the steps that a first target position with a temperature value lower than a preset temperature threshold value exists, the fact that the water evaporation effect of a material in an evaporation chamber is reduced, the vapor formation quality in the separation chamber is reduced, and the concentrated solution quality is reduced is caused, so that the target vapor pipeline is determined from a plurality of standby vapor pipelines according to the temperature value of the first target position, dropping video information and density comprehensive determination, the infrared imaging video characterizes the specific condition and quality of vapor formation in the separation chamber, the target power required by a compression fan is comprehensively determined according to the temperature value of the first target position and the infrared imaging video, the power of the compression fan is improved, the compression fan does work on vapor to improve the temperature of the vapor, the target power with the proper size can be comprehensively determined through the temperature value of the first target position and the infrared imaging video, the compression fan is controlled to operate according to the target power, and the target vapor pipeline is controlled to be opened, so that temperature compensation is performed, the electric energy consumption is increased due to the fact that the target power is too small, the target power is poor in temperature compensation effect is achieved, the proper target power is determined, the temperature compensation effect can be achieved, and the proper target power is achieved, and the energy-saving effect is further achieved when the temperature compensation effect is achieved through the pipeline, and the proper energy-saving effect is further achieved.

Drawings

Fig. 1 is a schematic flow chart of an adaptive energy-saving control method of a falling film evaporator according to an embodiment of the application.

Fig. 2 is a diagram showing a structural example of a falling film evaporator in an embodiment of the present application.

Fig. 3 is a schematic structural diagram of an adaptive energy-saving control device for a falling film evaporator according to an embodiment of the present application.

Fig. 4 is a schematic structural diagram of an adaptive energy-saving control system for a falling film evaporator according to an embodiment of the present application.

Fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Reference numerals 21, evaporation chamber, 22, separation chamber, 23, advanced separation chamber, 24, compression fan, 25, main steam pipeline, 251, throttle valve, 31, temperature sensor, 32, density sensor, 33, camera device, 34, infrared imaging device, 35, standby steam pipeline, 351, electronic valve, 352, deflector, 36, power sensor, 37, electronic equipment, 371, processor, 372, bus, 372, memory, 374, transceiver, 40, an adaptive energy-saving control device of a falling film evaporator, 401, first acquisition module, 402, standby pipeline determination module, 403, power determination module, 404 control module.

Detailed Description

The present application will be described in further detail with reference to the accompanying drawings.

Modifications of the embodiments which do not creatively contribute to the application may be made by those skilled in the art after reading the present specification, but are protected by patent laws within the scope of the claims of the present application.

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. 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.

In addition, the term "and/or" is merely an association relation describing the association object, and means that three kinds of relations may exist, for example, a and/or B, and that three kinds of cases where a exists alone, while a and B exist alone, exist alone. In this context, unless otherwise specified, the term "/" generally indicates that the associated object is an "or" relationship.

Embodiments of the application are described in further detail below with reference to the drawings.

The embodiment of the application provides a self-adaptive energy-saving control method of a falling film evaporator, which is executed by electronic equipment, wherein the electronic equipment can be a server or terminal equipment, and the server can be an independent physical server, a server cluster or a distributed system formed by a plurality of physical servers, or a cloud server for providing cloud computing service. The terminal device may be, but is not limited to, a smart phone, a tablet computer, a notebook computer, a desktop computer, etc., and the terminal device and the server may be directly or indirectly connected through wired or wireless communication, which is not limited herein, and as shown in fig. 1, the method includes step S101, step S102, step S103, and step S104, where,

S101, acquiring temperature values of a plurality of preset positions in an evaporation chamber, density of concentrated solution in a separation chamber, drip video information at the top of the separation chamber, infrared imaging video at the top of the separation chamber and power of a compression fan.

For the embodiment of the present application, as shown in fig. 2, a plurality of heat exchange tubes are disposed in the vertical direction in the evaporation chamber 21 of the falling film evaporator, and a worker can install the temperature sensor 31 at different heights in the evaporation chamber 21 in advance to collect temperature values at different heights, which are critical to the effect of evaporating moisture from the material. The temperature sensors 31 may be disposed at equal intervals or at desired intervals. The temperature sensor 31 is connected to the electronic device by a wire or wirelessly so that the electronic device obtains a temperature value.

The material flows through the heat exchange tube and reaches the separation chamber 22, the density changes after the material is evaporated to obtain concentrated solution, and the concentration quality of the material can be represented by the density of the concentrated solution, so that in order to know the density of the concentrated solution, workers can set a density sensor 32 or a densimeter and other devices capable of collecting the density of the concentrated solution in the separation chamber 22 in advance, and the density sensor 32 is connected with electronic equipment through a wire or wirelessly, so that the electronic equipment can obtain the density of the concentrated solution.

In order to better know the separation of the vapour from the concentrate in the material, a camera device 33 and an infrared imaging device 34 are also arranged in the separation chamber 22. The concentrate forms a concentrate droplet from the bottom of the heat exchange tube and falls down into the separation chamber 22, and thus the camera device 33 collects video information of the bottom of the heat exchange tube, i.e., video information of the droplet at the top of the separation chamber. Similarly, an infrared imaging device 34 is further disposed in the separation chamber 22, and the infrared imaging device 34 can collect infrared imaging video of the steam in the separation chamber 22, and the formation and separation of the steam can be known through the infrared imaging video, so that the quality of the concentrated solution and the required power of the compression fan 24 can be conveniently analyzed.

S102, if a first target position with the temperature value lower than a preset temperature threshold exists, determining a target steam pipeline from a plurality of standby steam pipelines based on the temperature value of the first target position, the drip video information and the density.

For the embodiment of the application, in order to improve the control effect of the temperature in the steam chamber and improve the qualification rate of the concentrated solution, a plurality of standby steam pipelines are communicated with the evaporation chamber of the falling film evaporator, as shown in fig. 2, materials enter the heat exchange tubes in the evaporation chamber 21 and then flow into the separation chamber 22 to form steam and concentrated solution, and a small amount of non-separated materials possibly exist in the steam, so that the steam flows into the first-stage separation chamber 23 to be separated again to obtain purer steam, and the steam flows into the compression fan 24 to do work to improve the temperature of the steam and then returns into the evaporation chamber 21 through the main steam pipeline 25. The backup steam line 35 has one end in communication with the compression fan 24 and the other end in communication with the evaporation chamber 21. When there is a position in the evaporation chamber 21 where the temperature is low, the high-temperature steam may be fed into the evaporation chamber 21 by using the backup steam line 35 so that the temperature in the evaporation chamber 21 is constant at a desired temperature value.

The staff can set a proper preset temperature threshold according to different factors of materials and store the preset temperature threshold in the electronic equipment, and after the electronic equipment acquires the temperature value of each preset position, the temperature value is compared with the preset temperature threshold, if a first target position lower than the preset temperature threshold exists, the condition that the abnormality occurs in a heat exchange link is indicated, namely, insufficient temperature in the heat exchange tube is caused due to insufficient temperature in the evaporation chamber, and then the materials are less in water evaporation and insufficient in concentration degree is caused due to higher temperature requirement of the evaporation chamber. The liquid drop video information records the specific conditions of liquid drop formation and dripping after material concentration, the density of the concentrated liquid represents the formation quality of the concentrated liquid, and the temperature value represents the temperature condition in the evaporating chamber, so that the target steam pipeline to be opened is comprehensively determined from a plurality of standby steam pipelines according to the temperature value of the first target position, the liquid drop video information and the density.

And S103, determining the target power required to be reached by the compression fan based on the temperature value of each first target position and the infrared imaging video.

For the embodiment of the application, the temperature value of the first target position represents the specific degree of temperature loss, and the temperature value of the first target position is related to the power required to be increased by the compression fan. And the infrared imaging video records the formation condition of steam in the separation chamber, and factors such as the temperature and the volume of the steam are related to the power which needs to be increased by the compression fan, so that the electronic equipment can accurately determine the target power which needs to be achieved by the compression fan according to the temperature value of the first target position and the infrared imaging video.

S104, controlling the compression fan to operate according to the target power, and controlling the target steam pipeline to be opened.

For the embodiment of the application, the electronic equipment is connected with the compression fan through a wireless or wire, and after the electronic equipment determines the target power required to be achieved by the compression fan, a control signal is sent to the compression fan so that the compression fan can operate according to the target power. Likewise, each standby steam pipeline is provided with an electronic valve, so that the opening or closing of the standby steam pipeline is controlled, the electronic equipment is connected with the electronic valve on each standby steam pipeline through a wire or wirelessly, and after determining the target steam pipeline, the electronic equipment sends a control signal to the electronic valve of the target steam pipeline, so that the electronic valve of the target steam pipeline acts, and the compression fan and the steam chamber are communicated. It should be appreciated that after the power of the compressor fan is increased, the temperature of the steam may be increased, and thus the temperature of the output of the main steam pipeline may be increased, and the steam with the increased temperature is only used for temperature compensation of the first target position, as shown in fig. 2, a throttle valve 251 may be disposed on the main steam pipeline to adjust the pressure and flow in the main steam pipeline, so as to prevent the temperature in the main steam pipeline from being too high, which leads to the increase of the density, concentration and consistency of the formed concentrated solution.

And then, determining the proper target power required to be reached by the compression fan according to the temperature value of the first target position and the infrared imaging video, so that the excessive target power is prevented from wasting more electric energy, the determined target power is more proper, and the compression fan operates according to the target power to save more electric energy.

One possible implementation manner of the embodiment of the present application, in which the target vapor line is determined from the plurality of backup vapor lines in step S102 based on the temperature value, the drip video information, and the density of the first target location, specifically includes step S1021 (not shown), step S1022 (not shown), step S1023 (not shown), step S1024 (not shown), step S1025 (not shown), and step S1026 (not shown), where,

S1021, determining a temperature difference value between the temperature value of each first target position and a preset temperature threshold value, and determining a first average value of the temperature difference values.

For the embodiment of the application, after the electronic equipment acquires the temperature value of each first target position, the temperature difference value between the temperature value of each first target position and the preset temperature threshold value is calculated, and the larger the difference value is, the worse the effect of evaporating the water in the materials in the heat exchange tube is. The electronic equipment determines a first average value of the temperature difference values through an average value calculation formula, and the first average value represents the deviation degree of the whole temperature values of all the first target positions.

And S1022, carrying out feature recognition on each frame of image of the drip video information to obtain a first number of complete liquid drops dripped by each heat exchange tube in each frame of image and a second number of complete liquid drops in each frame of image.

For the embodiment of the application, the electronic equipment inputs the drip video information into the trained network model for feature recognition, so that the first number of the complete drip of each heat exchange tube in each frame of picture is recognized, and the second number of the complete drip in each frame of picture is obtained by summing the first number of the complete drip of each heat exchange tube in each frame of picture. The trained network model may be a convolutional neural network model, a cyclic neural network model, or other type of network model, which is not limited herein. The staff can acquire the images of normal liquid drops at the top of the separation chamber in advance and label the complete liquid drops in the images, so that a training sample set is obtained, and the electronic equipment trains the network model according to the training sample set, so that a trained network model is obtained. In other embodiments, edge detection may be performed on each frame of image, pretreatment such as denoising may be performed on each frame of image, and operations such as gray level transformation may be performed to obtain an edge profile of a complete droplet, so as to identify the complete droplet.

The first quantity characterizes the quantity of complete liquid drops which are dropped out of the single heat exchange tube in unit time, and the first quantity of the single heat exchange tube is in a reasonable range when the concentration is normal. The second quantity is used for indicating the quantity of the whole liquid drops which are completely dripped out of all the heat exchange tubes in unit time, the second quantity of the whole heat exchange tubes is also in a reasonable range when the concentration is normal, the more the first quantity and the second quantity are, the less the water is evaporated, the lower the temperature of steam in the falling film evaporator is, the liquid drops in the separation chamber are faster, in the falling film evaporator, the materials are heated and evaporated, and the generated steam and the non-evaporated liquid enter the separation chamber together for separation. When the temperature of the steam is reduced, the heating capacity of the steam on the feed liquid is weakened, so that the evaporation speed of the feed liquid is reduced, and the efficiency of the whole evaporation process is affected. Due to the reduced steam temperature, the evaporation of the feed liquid on the pipe wall is reduced, so that more liquid flows down rapidly in a drop-like form, enters the separation chamber, and is discharged rapidly.

S1023, determining the overall dropping frequency of all heat exchange tubes based on the first quantity, and calculating a second average value of the second quantity.

For the embodiment of the application, the electronic equipment determines the drip frequency of each heat exchange tube according to the sum of the first quantity of each heat exchange tube in the preset time period and the unit time, and determines the integral drip frequency of all the heat exchange tubes according to the drip frequency of each heat exchange tube, the quantity of all the heat exchange tubes and an average value calculation formula. The electronic device determines a second average value according to the second number of pictures per frame and the number of pictures per frame.

S1024, determining the required number of spare steam pipelines based on the first average value, the drip frequency and the second average value.

For the embodiment of the application, the first average value represents the integral temperature deviation degree of all first target positions, the larger the first average value is, the more serious the temperature deviation is, the more the needed number of standby steam pipelines is, the same, the larger the dropping frequency is, the more insufficient the water evaporation of the material is, namely, the more the number of the needed standby steam pipelines is, the larger the second average value is, the more the complete liquid drops formed at the top of a separation chamber in each frame of picture is, the more insufficient the water evaporation of the material is, the more the needed number of the needed standby steam pipelines is, therefore, the three are important factors affecting the number of the standby steam pipelines, the influence degree is not used, different coefficients can be set for the three in advance, the coefficient of the first average value is 0.4, the coefficient of the dropping frequency is 0.4, the coefficient of the second average value is 0.2, the coefficient of the first average value is 3, the dropping frequency is 15, the second average value is 9, the electronic equipment is used for weighting calculation based on the coefficient and the value of the three factors to obtain 3×0.4+15×0.4=9, the number of the needed steam pipelines can be determined in advance by the preset value interval, the number of the needed steam pipelines can be determined in the preset interval, the number of the needed value is more than 9, and the needed value is suitable for the number of the needed steam pipelines can be determined in the preset interval, and the number of the needed value is determined by the corresponding to the number of the needed value is used for the corresponding to the needed value.

S1025, if the required number is smaller than the number of the first target positions, calculating the distance from each standby steam pipeline to each first target position, and calculating the average distance corresponding to each standby steam pipeline based on the distances.

For the embodiment of the application, if the determined required number is smaller than the number of the first target positions, it is indicated that fewer standby steam lines need to cover all of the first target positions, so that the standby steam lines at the appropriate positions need to be determined. The staff draws the evaporator in the preset square chart, marks the coordinates of each preset position and the coordinates of each standby steam pipeline, calculates the distance from each standby steam pipeline to each first target position through a two-point distance formula, and the electronic equipment determines the average distance of each standby steam pipeline according to an average value calculation formula. If the required number is not less than the number of the first target positions, it is indicated that one target steam pipeline can perform targeted temperature compensation on at least one first target position, so that the standby steam pipeline closest to each first target position is determined as the target steam pipeline directly according to the distance from the first target position to the standby steam pipeline.

And S1026, determining the standby steam pipelines with the minimum average distance and the front required number as target steam pipelines.

For the embodiment of the application, after the electronic equipment determines the average distance, the smaller the average distance of a certain standby steam pipeline is, the smaller the distance from the standby steam pipeline to each first target position is, and the electronic equipment is suitable for serving as a target steam pipeline, so that the electronic equipment sorts the average distance from small to large, and the required number of standby steam pipelines, namely the target steam pipelines, are selected from sorting results according to the sorting order. Assuming that the required number is 2, three standby steam pipelines are all provided, and the electronic equipment can select the first two standby steam pipelines as target steam pipelines after sequencing the three standby steam pipelines from small to large according to the average distance. After the proper number of standby steam pipelines are determined, the final target steam pipeline is determined according to the average distance corresponding to each standby steam pipeline, so that the effect of conveying steam to the steam chamber is improved, and each first target position can be heated up rapidly.

In one possible implementation manner of the embodiment of the present application, the determining, in step S103, the target power that needs to be reached by the compression fan based on the temperature value of each first target location and the infrared imaging video specifically includes step S1031 (not shown in the figure), step S1032 (not shown in the figure), step S1033 (not shown in the figure), step S1034 (not shown in the figure), step S1035 (not shown in the figure), and step S1036 (not shown in the figure), where,

S1031, determining the volume of steam and the average temperature of the steam sprayed out of the whole heat exchange tube based on the infrared imaging video.

For the embodiment of the application, the electronic equipment can filter the liquid drop characteristics in the infrared imaging video, so that the influence of the liquid drop characteristics on the subsequent infrared imaging video analysis is reduced. The electronic equipment performs edge detection on each frame of picture in the infrared imaging video to obtain an edge contour of steam sprayed out of the whole heat exchanger, the number of pixels in the contour is represented as steam volume, the steam volume is larger as the number of the pixels is larger, and the electronic equipment determines an average value of the number of the pixels according to the number of the pixels of each frame of picture and the number of all frames of the infrared imaging video, namely the average value of the number of the pixels represents the steam volume.

Since infrared imaging video also records the temperature inside the vapor, there may be a difference in the temperature inside the vapor edge and the vapor center. Therefore, the electronic equipment determines the temperature average value of the steam in each frame according to the temperature values of different positions of the steam in each frame, namely, the temperature average value is used for representing the temperature of the steam in each frame, the electronic equipment then utilizes the quantity of all the frames and the temperature of the steam in each frame, the average value of the steam temperature is determined by combining an average value calculation formula, and the steam temperature average value is used for representing the steam temperature. The steam volume and the steam temperature can both characterize the formation and quality of the steam in the separation chamber.

S1032, calculating the first similarity between every two adjacent frames of the infrared imaging video and the second similarity between each frame of the infrared imaging video and the preset frame.

For the embodiment of the application, the electronic equipment calculates the first similarity between every two adjacent frames, wherein the smaller the first similarity is, the larger the steam change amplitude in the two adjacent frames is, the more intense the steam is generated, the more sufficient the steam is formed, namely the more sufficient the concentration is, and the larger the first similarity is, the smaller the steam change amplitude in the two adjacent frames is, the more gradual the steam change is, and the less the steam is formed. And the electronic equipment calculates the second similarity between each frame of picture and a preset picture, wherein the preset picture is an infrared picture formed by separating indoor steam when a material collected by a worker in advance is normally evaporated by moisture in the evaporator. The electronic equipment calculates second similarity between each frame of picture and a preset picture, the second similarity represents the difference between the currently formed steam and the formed standard steam, and the larger the second similarity is, the smaller the difference between the current steam formation and the standard steam formation is, and the smaller the second similarity is, the larger the difference between the current steam formation and the standard steam formation is. The computational similarity may be calculated by a structural similarity metric (SSIM). It can also be calculated by cosine similarity.

S1033, determining a variance of the first similarity and a similarity average of the second similarity.

For the embodiment of the application, the electronic equipment calculates the average value of the first similarity first, then calculates the variance of the first similarity by using a variance calculation formula, and characterizes the intensity of steam change in the separation chamber by the variance. And the electronic device calculates a similarity average value of the second similarity, the similarity average value representing an overall gap between the steam formed in the current separation chamber and the standard steam.

S1034, determining a first score based on the variance, the similarity average, the vapor volume, and the vapor average temperature.

For the embodiment of the application, the variance and the similarity average value are key factors influencing the quality of the currently formed steam, and the influence degrees are different, the larger the variance is, the more severe the formed steam is, the more sufficient the formed steam is, the larger the similarity average value is, the more approximate the formed steam is to the standard steam, the more sufficient the formed steam is formed, the higher the steam average temperature is, the more sufficient the formed steam is formed, and the staff can set different coefficients for the variance, the similarity average value, the steam volume and the steam average temperature and calculate the first score related to the quality of the currently formed steam by weighting according to the variance, the similarity average value, the steam volume and the steam average temperature. The larger the first score, the higher the steam quality, the smaller the power the compressor fan needs to increase, and the more electric energy the compressor fan saves. The manner of performing the weight calculation may be referred to the disclosure in step S1024.

S1035, determining a temperature difference value between the temperature value of each first target position and a preset temperature threshold value, and determining a second score based on the temperature difference value and the number of the first target positions.

For the embodiment of the application, the larger the temperature difference value is, the more insufficient the steam is formed in the heat exchange tube, the density of the concentrated solution cannot reach the required density, and the lower the quality of the obtained concentrated solution is, the larger the power which needs to be increased by the compression fan is. The more the number of first target positions, the lower the temperature of the steam in the evaporation chamber as a whole, the less the steam formed and the lower the temperature, and the lower the quality of the concentrate obtained, and the greater the power required to increase the compression fan, so the second score on the temperature in the evaporation chamber is obtained by setting different coefficients for the temperature difference and the number of first target positions and performing the weighting calculation, and the manner of performing the weighting calculation can be referred to the disclosure in step S1024 or step S1034.

And S1036, determining the target power required to be achieved by the compression fan based on the first score and the second score.

For the embodiment of the application, the first score represents the quality of steam formed in the separation chamber, the second score represents the quality of temperature in the evaporation chamber, and the target power required to be achieved by the compression fan is determined more accurately by comprehensive calculation according to the first score and the second score. Specifically, the electronic device may perform weighted calculation on the first score and the second score to obtain a total score, or may directly calculate the sum of the first score and the second score to obtain a total score, where a plurality of preset score intervals may be stored in the electronic device, where each preset score interval corresponds to power that needs to be achieved by the compression fan, so the electronic device determines a preset score interval where the total score is located, and determines power corresponding to the interval as the target power. Or building a model according to the first score, the second score and other related parameters (such as the parameters used for calculating the first score and the second score) in advance, collecting a training sample set related to the first score, the second score and the target power in advance, training the network model to obtain a trained network model, and inputting the first score and the second score into the trained network model by the electronic equipment to calculate the power so as to obtain the target power. By calculating a first score representing the quality of the vapor and a second score representing the quality of the temperature within the evaporation chamber, and combining the first score and the second score, the overall determination of the target power is more accurate.

In other embodiments, the target power may also be calculated in combination with the drip frequency, which is not described here. It should be appreciated that the above-mentioned coefficients may be adaptively adjusted according to the actual situation and the need.

A possible implementation manner of the embodiment of the present application, step S103 further includes step S105 (not shown in the figure), step S106 (not shown in the figure), and step S107 (not shown in the figure), where,

S105, obtaining the dropping frequency, and calculating the ratio of the first component to the dropping frequency.

For the embodiment of the application, after the electronic equipment determines the dropping frequency, the ratio of the first score to the dropping frequency is calculated. The first score characterizes the quality of steam formed in the separation chamber, the dropping frequency characterizes the speed of forming concentrated solution after the material passes through the evaporation chamber, the quality of the concentrated solution can be obtained through the dropping frequency characterization, it is needed to know that the dropping frequency is calculated under the condition that the flow rate of the material enters the evaporation chamber is fixed, the material finally forms secondary utilized steam and concentrated solution in the separation chamber, therefore, under the condition that the quality of the concentrated solution is qualified and the quality of the formed steam is qualified, the ratio of the first score to the dropping frequency is in a fixed value or a fixed range, and therefore, the electronic equipment calculates the ratio of the first score to the dropping frequency in real time so as to analyze the specific condition and quality of the evaporation process.

S106, determining the corresponding relation between the ratio and the current power of the compression fan.

For the embodiment of the application, the current power of the compression fan influences the steam temperature and further influences the quality of steam formed in the separation chamber and the quality of concentrated solution, so that the electronic equipment determines the corresponding relation between the ratio and the current power, thereby facilitating the subsequent analysis.

And S107, generating a training sample set based on the corresponding relation so as to train the target network model.

The target network model is constructed based on the ratio of the first component to the drip frequency and the current power of the compression fan.

For the embodiment of the application, in order to optimize the power regulation condition of the compression fan so as to achieve a more energy-saving effect, a worker can construct a target network model according to the ratio of the first score to the dropping frequency and the current power of the compression fan, and after the corresponding relation between the ratio and the current power is determined by the electronic equipment, a training sample set is generated according to the corresponding relation, so that the current target network model is deeply trained and optimized, and the trained network model can regulate the power of the compression fan according to the ratio of the first score to the dropping frequency so as to achieve the more energy-saving effect.

In one possible implementation manner of the embodiment of the present application, a rotatable baffle is disposed at one end of each standby steam pipe near the evaporation chamber, and step S104 further includes step one, step two, step three, step four and step five, where,

If the required number is smaller than the number of the first target positions, determining the angle formed by each first target position and the associated target steam pipeline.

The associated target steam pipelines are angles which are formed by the nearest target steam pipelines corresponding to the first target positions.

For the embodiment of the application, the guide plate can be in a shutter shape or other forms, and the angle of the guide plate can be adjusted, and particularly, the guide plate can be connected with a servo motor for adjustment. In a normal case, the conveying direction of the standby steam pipeline is perpendicular to the heat exchange pipe, and the steam flows in a fan shape after flowing out of the standby steam pipeline.

If the required number is smaller than the number of first target locations, there may be some first target locations that are too far from the associated target steam line, thereby resulting in some of the first target locations being outside the fan-shaped area of steam coverage of the associated target steam line. Therefore, the electronic device determines the angle between each first target position and the associated target steam pipeline, specifically, a worker draws the evaporator in a preset square chart, marks the coordinate of each preset position and the coordinate of each standby steam pipeline, and calculates the angle between each first target position and the associated target steam pipeline through a vector included angle calculation formula and the like.

And step two, if a second target position with an angle larger than a preset angle threshold exists in the first target position, determining the rotation angle of the deflector on the associated target steam pipeline corresponding to the second target position based on the angle.

For the embodiment of the application, the preset angle threshold is the angle of the fan-shaped range of the steam flowing out of each standby steam pipeline, and the electronic equipment compares the determined angle with the preset angle threshold so as to judge whether a second target position with the angle larger than the preset angle threshold exists or not, wherein the second target position is the preset position which is inconvenient to cover by the associated target steam pipeline. The electronic device subtracts a preset angle threshold value according to the angle formed by the second target position and the associated target steam pipeline to obtain an angle difference value, wherein the angle difference value is the rotation angle of the deflector on the associated target steam pipeline.

And thirdly, determining a first target position corresponding to the second target position and covered by the associated target steam pipeline.

For the embodiment of the application, the electronic equipment determines the first target position in the fan-shaped range of the steam sprayed by the associated target steam pipeline, and the electronic equipment simulates the coverage range of the associated target steam pipeline after determining the preset angle range because other first target positions are required to be considered by the associated target steam pipeline, and translates the coverage range to the heat exchange pipe in the evaporation chamber, so that the covered first target position is determined.

And step four, determining the proportion of the temperature difference value of the covered first target position and the temperature difference value of the covered second target position.

For the embodiment of the application, the larger the temperature difference value of a certain first target position is, the more important the first target position is, so that the electronic equipment determines the proportion between the temperature difference value of the covered first target position and the temperature difference value of a second target position, and the priority of the importance degree between the covered first target position and the covered second target position is represented by the proportion.

And fifthly, determining the duration time from the deflector of the related target steam pipeline to the rotation angle based on the proportion.

For the embodiment of the application, after the electronic equipment determines the proportion, the duration of the baffle after the rotation angle can be determined according to the proportion, the larger the duty ratio of the second target position is, the more important the second target position is, the longer the duration is, and the shorter the duration is, so that the electronic equipment can set different durations according to different proportions, can find the corresponding duration after determining the duration, and control the baffle to keep the angle according to the duration after the rotation angle and to return to the original position after the duration is finished. By determining the angle of rotation of the deflector and the duration after rotation, each first target position can be sufficiently temperature compensated.

A possible implementation manner of the embodiment of the present application, step S106 further includes step S107 (not shown in the figure) and step S108 (not shown in the figure), where,

S107, mapping the corresponding relation in a preset coordinate system, and outputting the mapped preset coordinate system.

For the embodiment of the application, the coordinate system of the ratio and the current power is stored in the electronic equipment in advance, the electronic equipment directly maps on the coordinate system after determining the corresponding relation, and the change condition can be obtained by connecting the adjacent corresponding relation, and the electronic equipment can output and display the mapped preset coordinate system by controlling the display devices such as the display screen, so that the staff can clearly know the change condition.

S108, outputting the drip video information and the infrared imaging video.

For the embodiment of the application, the electronic equipment outputs and displays the acquired infrared imaging video through the display screen device, so that a worker can clearly know the formation condition of the steam in the separation chamber.

The foregoing embodiments describe a method for adaptively controlling energy conservation of a falling film evaporator from the viewpoint of a method flow, and the following embodiments describe an apparatus for adaptively controlling energy conservation of a falling film evaporator from the viewpoint of a virtual module or a virtual unit, which will be described in detail in the following embodiments.

An embodiment of the present application provides an adaptive energy-saving control device 40 for a falling film evaporator, as shown in fig. 3, the adaptive energy-saving control device 40 for a falling film evaporator may specifically include:

A first obtaining module 401, configured to obtain temperature values of a plurality of preset positions in the evaporation chamber, density of the concentrated solution in the separation chamber, drip video information on the top of the separation chamber, infrared imaging video on the top of the separation chamber, and power of the compression fan;

A backup line determination module 402 configured to determine, when there is a first target location having a temperature value below a preset temperature threshold, a target vapor line from a plurality of backup vapor lines based on a temperature value of the first target location, drip video information, and a density;

a power determining module 403, configured to determine a target power to be reached by the compression fan based on the temperature value of each first target location and the infrared imaging video;

the control module 404 is used for controlling the compression fan to operate according to the target power and controlling the opening of the target steam pipeline.

The embodiment of the application discloses a self-adaptive energy-saving control device 40 of a falling film evaporator, wherein a first acquisition module 401 acquires temperature values of a plurality of preset positions in an evaporation chamber, density of concentrated liquid in the separation chamber, drip video information at the top of the separation chamber, infrared imaging video at the top of the separation chamber and power of a compression fan, a first target position with the temperature value lower than a preset temperature threshold exists, which indicates that the water evaporation effect of materials in the evaporation chamber is reduced, so that the vapor formation quality in the separation chamber is reduced and the concentrated liquid quality is reduced, a standby pipeline determination module 402 determines a target vapor pipeline from the plurality of standby vapor pipelines according to the temperature value of the first target position, drip video information and density comprehensive determination, the infrared imaging video represents specific conditions and quality of vapor formation in the separation chamber, therefore, a power determination module 403 comprehensively determines the target power required to be reached by the compression fan according to the temperature value of the first target position and the infrared imaging video, the power of the compression fan is improved, the compression fan does work on the vapor so as to improve the temperature of the vapor, thereby compensating the temperature of the first target position in the evaporation chamber, the vapor is reduced, the vapor formation quality in the separation chamber is reduced and the concentrated liquid quality is reduced, the standby pipeline is determined according to the temperature value of the first target position, the drip video information and the density is reduced, the infrared imaging video is higher than the specific condition of vapor formation in the separation chamber, and the target power is better than the target power is achieved by the infrared imaging video, and the power is better than the target temperature, and the vapor condition is better than the target temperature is better and can be controlled by the vapor temperature and has better temperature and lower than temperature value. The steam energy loss in the temperature compensation process is reduced, so that the energy-saving effect is further achieved.

In one possible implementation manner of the embodiment of the present application, the backup line determining module 402 is specifically configured to, when determining the target vapor line from the plurality of backup vapor lines based on the temperature value, the drip video information, and the density of the first target location:

Determining a temperature difference value between the temperature value of each first target position and a preset temperature threshold value, and determining a first average value of the temperature difference values;

Performing feature recognition on each frame of image of the drip video information to obtain a first number of complete liquid drops dripped from each heat exchange tube in each frame of image and a second number of complete liquid drops in each frame of image;

the previously required number of backup steam lines with the smallest average distance is determined as the target steam line.

In one possible implementation manner of the embodiment of the present application, when determining, based on the temperature value of each first target location and the infrared imaging video, the power determining module 403 is specifically configured to:

determining the volume of steam sprayed out of the whole heat exchange tube and the average temperature of the steam based on infrared imaging video;

Calculating a first similarity between every two adjacent frames of the infrared imaging video and a second similarity between each frame of the infrared imaging video and a preset frame;

The target power to be achieved by the compression fan is determined based on the first score and the second score.

In one possible implementation manner of the embodiment of the present application, the apparatus 40 further includes:

In one possible implementation manner of the embodiment of the present application, a rotatable deflector is disposed at an end of each spare steam pipe near the evaporation chamber, and the apparatus 40 further includes:

the position determining module is used for determining a first target position of the associated target steam pipeline coverage corresponding to the second target position;

a proportion determining module for determining the proportion of the temperature difference of the covered first target position and the temperature difference of the covered second target position;

And the duration time determining module is used for determining the duration time from the deflector of the related target steam pipeline to the rotation angle based on the proportion.

It will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the adaptive energy-saving control device 40 for a falling film evaporator described above may refer to the corresponding process in the foregoing method embodiment, and will not be described herein again.

The embodiment of the application provides a self-adaptive energy-saving control system of a falling film evaporator, which comprises a plurality of temperature sensors 31, as shown in fig. 2 and 4, and the temperature sensors are arranged at a plurality of preset positions in an evaporation chamber 21 and are used for collecting temperature values at the plurality of positions. A density sensor 32 is disposed within the separation chamber 22 for sensing the density of the concentrate. The camera device 33 is arranged in the separation chamber 22 and is used for collecting video information of the liquid drops at the top of the separation chamber 22. An infrared imaging device 34 is disposed within the separation chamber 22 for capturing infrared imaging video of the top of the separation chamber 22. A power sensor 36 for collecting the power of the compressor fan. The plurality of standby steam pipelines 35 are communicated with the evaporation chamber 21 and the compression fan 24, an electronic valve 351 is arranged in each standby steam pipeline 35, and the electronic valve 351 is connected with the electronic equipment 37 through wires or wirelessly, so that the electronic equipment 37 controls the electronic valve 351 to act, and then controls the standby steam pipeline 351 to be opened. The electronic device 37 is connected with the plurality of temperature sensors 31 through wires or wirelessly, connected with the density sensor 32 through wires or wirelessly, connected with the camera device 33 through wires or wirelessly, connected with the infrared imaging device 34 through wires or wirelessly, connected with the power sensor 36 through wires or wirelessly, and used for acquiring temperature values of a plurality of preset positions in the evaporation chamber 21, density of concentrated solution in the separation chamber 22, dropping video information of the top of the separation chamber 22, infrared imaging video of the top of the separation chamber 22 and power of the compression fan 24, if a first target position with the temperature value lower than a preset temperature threshold exists, determining a target steam pipeline from the plurality of standby steam pipelines 35 based on the temperature value of the first target position, the dropping video information and the density, determining target power required to be reached by the compression fan 24 based on the temperature value of each first target position and the infrared imaging video, controlling the compression fan 24 to operate according to the target power, and controlling the opening of the target steam pipeline. And the electronic device 37 is used to perform the disclosure of the method embodiments described above.

The temperature values of the plurality of preset positions collected by the temperature sensor 31 are sent to the electronic device 37 so that the electronic device 37 obtains the temperature values, the density of the concentrated solution collected by the density sensor 32 is sent to the electronic device 37, the drip video information collected by the camera device 33 is sent to the electronic device 37, the infrared imaging device 34 sends the collected infrared imaging video to the electronic device 37, the power sensor 36 sends the collected power of the compression fan 24 to the electronic device 37, and the electronic device 37 determines the target steam pipeline and the target power of the compression fan 24 according to the data disclosed in the embodiment of the method. In addition, each spare steam pipeline 35 is provided with a deflector 352, and the electronic device 37 is connected with a servo motor for controlling the deflector 352 to rotate through a wire or wirelessly so as to control the deflector 352 to rotate. In order to control and regulate the flow rate and pressure of steam in the main steam line 25, a throttle valve 251 is provided in the main steam line 25, and the electronic device 37 is connected to the throttle valve 251 by a wire or wirelessly.

In an embodiment of the present application, as shown in fig. 5, an electronic device 37 shown in fig. 5 includes a processor 371 and a memory 373. Processor 371 is coupled to memory 373, such as via bus 372. Optionally, the electronic device 37 may also include a transceiver 374. It should be noted that, in practical applications, the transceiver 374 is not limited to one, and the structure of the electronic device 37 is not limited to the embodiment of the present application.

The Processor 371 may be a CPU (Central Processing Unit ), general purpose Processor, DSP (DIGITAL SIGNAL Processor, data signal Processor), ASIC (Application SPECIFIC INTEGRATED Circuit), FPGA (Field Programmable GATE ARRAY ) or other programmable logic device, transistor logic device, hardware component or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules and circuits described in connection with this disclosure. Processor 371 may also be a combination that performs computing functions, such as including one or more microprocessors, a combination of a DSP and a microprocessor, or the like.

Bus 372 may include a path to transfer information between the components. Bus 372 may be a PCI (PERIPHERAL COMPONENT INTERCONNECT, peripheral component interconnect standard) bus, or an EISA (Extended Industry Standard Architecture ) bus, or the like. Bus 372 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in fig. 5, but not only one bus or type of bus.

The Memory 373 may be, but is not limited to, a ROM (Read Only Memory) or other type of static storage device that can store static information and instructions, a RAM (Random Access Memory ) or other type of dynamic storage device that can store information and instructions, an EEPROM (ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY ), a CD-ROM (Compact Disc Read Only Memory, compact disc Read Only Memory) or other optical disk storage, optical disk storage (including compact discs, laser discs, optical discs, digital versatile discs, blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.

The memory 373 is used for storing application program codes for executing the inventive arrangements and is controlled to be executed by the processor 371. The processor 371 is configured to execute application code stored in the memory 373 to implement what is shown in the foregoing method embodiments.

Among them, the electronic devices include, but are not limited to, mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), car terminals (e.g., car navigation terminals), and the like, and stationary terminals such as digital TVs, desktop computers, and the like. But may also be a server or the like. The electronic device shown in fig. 5 is only an example and should not be construed as limiting the functionality and scope of use of the embodiments of the present application.

Embodiments of the present application provide a computer-readable storage medium having a computer program stored thereon, which when run on a computer, causes the computer to perform the corresponding method embodiments described above. Compared with the related art, the first target position with the temperature value lower than the preset temperature threshold value is provided in the embodiment of the application, which indicates that the water evaporation effect of the material in the evaporation chamber is reduced, so that the vapor formation quality in the separation chamber is reduced and the concentrate quality is reduced, therefore, the target vapor pipeline is determined from a plurality of standby vapor pipelines according to the temperature value of the first target position, the drop video information and the density is comprehensively determined, the infrared imaging video characterizes the specific condition and the quality of vapor formation in the separation chamber, therefore, the target power required by the compression fan is comprehensively determined according to the temperature value of the first target position and the infrared imaging video, the power of the compression fan is improved, the compression fan does work on the vapor to improve the temperature of the vapor, the temperature of the first target position in the evaporation chamber is compensated, the target power with the proper size can be comprehensively determined through the temperature value of the first target position and the infrared imaging video, the compression fan is controlled to operate according to the target power, and the target vapor pipeline is controlled to be opened, so that the electric energy consumption is increased, the target power is too small, the target power causes the temperature compensation effect is poor, therefore, the proper target power can be compensated at the same time, the energy is saved, and the energy is further reduced in the target energy is required by the process.

It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited in order and may be performed in other orders, unless explicitly stated herein. Moreover, at least some of the steps in the flowcharts of the figures may include a plurality of sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, the order of their execution not necessarily being sequential, but may be performed in turn or alternately with other steps or at least a portion of the other steps or stages.

The foregoing is only a partial embodiment of the present application, and it should be noted that it will be apparent to those skilled in the art that modifications and adaptations can be made without departing from the principles of the present application, and such modifications and adaptations are intended to be comprehended within the scope of the present application.

Claims

1. An adaptive energy-saving control method for a falling film evaporator, characterized in that it includes:

The system acquires temperature values at multiple preset locations in the evaporation chamber, density of the concentrate in the separation chamber, video information of dripping liquid at the top of the separation chamber, infrared imaging video of the top of the separation chamber, and power of the compressor fan.

If there is a first target location with a temperature value lower than a preset temperature threshold, then the target steam pipeline is determined from multiple backup steam pipelines based on the temperature value, dripping video information, and density of the first target location.

The target power required by the compressor is determined based on the temperature value at each first target location and the infrared imaging video.

Control the compressor to operate at the target power, and control the target steam pipeline to open;

The step of determining the target steam pipeline from multiple backup steam pipelines based on the temperature value, dripping video information, and density at the first target location includes:

Determine the temperature difference between the temperature value at each first target location and a preset temperature threshold, and determine the first average value of the temperature difference;

Feature recognition is performed on each frame of the dripping video information to obtain the first number of complete droplets dripping from each heat exchange tube in each frame, and the second number of complete droplets in each frame.

Based on the first quantity, determine the overall dripping frequency of all heat exchange tubes, and calculate the second average value of the second quantity;

The required number of backup steam lines is determined based on the first average value, the dripping frequency, and the second average value.

If the required quantity is less than the quantity at the first target location, then calculate the distance from each backup steam pipeline to each first target location, and calculate the average distance corresponding to each backup steam pipeline based on the distance.

The target steam pipeline is determined by the number of spare steam pipelines with the minimum average distance mentioned above.

2. The adaptive energy-saving control method for a falling film evaporator according to claim 1, characterized in that determining the target power required by the compressor based on the temperature value at each first target location and infrared imaging video includes:

The overall steam volume and average steam temperature ejected from the heat exchanger tube are determined based on the infrared imaging video.

Calculate the first similarity between every two adjacent frames of the infrared imaging video, and the second similarity between each frame and a preset frame;

Determine the variance of the first similarity and the average similarity of the second similarity;

The first score is determined based on the variance, the average similarity, the steam volume, and the average steam temperature.

Determine the temperature difference between the temperature value at each first target location and a preset temperature threshold, and determine a second score based on the temperature difference and the number of first target locations;

The target power that the compressor needs to achieve is determined based on the first score and the second score.

3. The adaptive energy-saving control method for a falling film evaporator according to claim 2, characterized in that the method further includes:

Obtain the dripping frequency and calculate the ratio of the first score to the dripping frequency;

Determine the correspondence between the ratio and the current power of the compressor;

A training sample set is generated based on the correspondence to train the target network model, which is constructed based on the ratio of the first score to the dripping frequency and the current power of the compressor.

4. The adaptive energy-saving control method for a falling film evaporator according to claim 1, characterized in that a rotatable guide plate is provided at one end of each standby steam pipeline near the evaporation chamber to control the opening of the target steam pipeline, and further includes:

If the required quantity is less than the quantity of the first target locations, then the angle between each first target location and the associated target steam pipeline is determined, wherein the associated target steam pipeline is the angle between the nearest target steam pipeline corresponding to each first target location;

If there is a second target position with an angle greater than a preset angle threshold among the first target positions, then the rotation angle of the guide plate on the associated target steam pipeline corresponding to the second target position is determined based on the angle.

Determine the first target location covered by the associated target steam pipeline corresponding to the second target location;

Determine the ratio of the temperature difference between the first target location and the temperature difference between the second target location;

The duration of the guide vane of the associated target steam pipeline after the rotation angle is determined based on the ratio.

5. The adaptive energy-saving control method for a falling film evaporator according to claim 3, characterized in that the method further includes:

The correspondence is mapped onto a preset coordinate system, and the mapped preset coordinate system is output.

Output the droplet video information and infrared imaging video.

6. An adaptive energy-saving control device for a falling film evaporator, characterized in that it comprises:

The first acquisition module is used to acquire the temperature values at multiple preset locations in the evaporation chamber, the density of the concentrate in the separation chamber, the video information of the dripping liquid at the top of the separation chamber, the infrared imaging video at the top of the separation chamber, and the power of the compressor fan.

The backup pipeline determination module is used to determine the target steam pipeline from multiple backup steam pipelines when there is a first target location with a temperature value lower than a preset temperature threshold, based on the temperature value of the first target location, dripping video information, and density.

A power determination module is used to determine the target power that the compressor needs to achieve based on the temperature value at each first target location and the infrared imaging video.

The control module is used to control the compressor to operate at the target power and to control the opening of the target steam pipeline.

7. An adaptive energy-saving control system for a falling film evaporator, characterized in that it comprises:

Multiple temperature sensors are installed at multiple preset locations within the evaporation chamber to collect temperature values at these locations.

A density sensor, installed in the separation chamber, is used to collect the density of the concentrate;

A camera device is installed inside the separation chamber to collect video information of the droplets at the top of the separation chamber;

An infrared imaging device is installed inside the separation chamber to collect infrared imaging video from the top of the separation chamber.

A power sensor is used to collect the power of the compressor.

Multiple backup steam pipelines are connected to the steam chamber and to the compressed air fan;

An electronic device, communicatively connected to the multiple temperature sensors, the density sensor, the camera device, the infrared imaging device, and the power sensor, is used to acquire temperature values at multiple preset locations in the evaporation chamber, density of the concentrate in the separation chamber, video information of dripping liquid at the top of the separation chamber, infrared imaging video at the top of the separation chamber, and power of the compressor. If there is a first target location with a temperature value lower than a preset temperature threshold, a target steam pipeline is determined from multiple backup steam pipelines based on the temperature value, dripping liquid video information, and density of the first target location. The target power required by the compressor is determined based on the temperature value and infrared imaging video of each first target location. The compressor is controlled to operate at the target power, and the target steam pipeline is controlled to open.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, when the computer program is executed in a computer, it causes the computer to execute an adaptive energy-saving control method for a falling film evaporator according to any one of claims 1 to 5.