A control system and method for gas purification

Abstract

The present invention relates to the field of control technology and is a control system and method for gas purification. The specific method comprises: collecting historical purification data, static property data and multiple sets of dynamic property data of a gas purification device; obtaining a purification attenuation coefficient according to the historical purification data, and obtaining a target purification time through the purification attenuation coefficient; obtaining the initial gas flow rate of the gas, constructing a diversion control model, obtaining multiple sets of diversion control parameters through the diversion control model calculation, screening the multiple sets of diversion control parameters through the target purification time, obtaining the target diversion control parameters, and controlling the diversion plate array in the gas purification device; the present invention solves the problem in the prior art that some gases do not stay in the device for an insufficient time and fail to fully contact the purification medium, resulting in poor gas purification effect and uneven deactivation of purified substances in the purification device.

Description

Technical Field

[0001] The present invention relates to the field of control technology, and relates to a control system and method for gas purification. Background Art

[0002] Traditional gas purification devices usually lack guide devices or use fixed-structure guide plates to guide the flow of gas to achieve sufficient contact between the gas and the purification medium. However, such devices often have several limitations, including: due to the static layout of the guide plates, the flow path of the gas in the device may be uneven, resulting in a shorter residence time of the gas in some areas, thus affecting the purification effect. Secondly, over time, the performance of the purification device may gradually decline, and the control methods in the existing technology often lack an effective evaluation and compensation mechanism for this decline. When the gas purification device is replaced, there will be a problem of uneven deactivation, with some parts completely deactivated and some not completely deactivated, resulting in a decrease in the utilization rate of the purification device. In addition, the initial flow rate and purification requirements of the gas may change over time, and the traditional fixed purification time is difficult to adapt to these changes, which may lead to excessive or insufficient purification. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to address the problem in the prior art that some gases do not stay in the device for an insufficient time and fail to fully contact the purification medium, resulting in poor gas purification effect and uneven deactivation of purified substances in the purification device. A control system and method for gas purification are proposed.

[0004] In order to achieve the above object, the technical solution of a control method for gas purification of the present invention comprises the following steps:

[0005] Collecting historical purification data of the gas purification device and static attribute data and multiple sets of dynamic attribute data of the guide plate array in the gas purification device;

[0006] Obtain the purification attenuation coefficient based on historical purification data, and obtain the target purification time through the purification attenuation coefficient;

[0007] Obtaining an initial gas flow rate of the gas, building a diversion control model, and importing the initial gas flow rate, the static property data, and multiple sets of dynamic property data into the diversion control model to calculate and obtain multiple sets of diversion control parameters;

[0008] Multiple groups of diversion control parameters are screened according to the target purification time, the target diversion control parameters are obtained, and the diversion plate array in the gas purification device is controlled.

[0009] Specifically, the guide plate array in the gas purification device includes: a plurality of guide plate sub-arrays, wherein each guide plate sub-array is composed of four guide plates, a first guide plate and a third guide plate are distributed from top to bottom on one side wall of the gas purification device, and a second guide plate and a fourth guide plate are distributed from top to bottom on the other side wall of the gas purification device;

[0010] The first guide plate, the second guide plate and the fourth guide plate are non-rotatable guide plates with fixed angles, and the third guide plate is a rotatable guide plate with no angle;

[0011] The gas enters from the air inlet of the guide plate sub-array, passes through the first guide plate, the second guide plate, the third guide plate, and the fourth guide plate in sequence, and leaves the first collision turning point, the second collision turning point, the third collision turning point, and the fourth collision turning point on the four guide plates in sequence;

[0012] Among them, the first guide plate, the second guide plate and the third guide plate will slow down and divert the gas they come into contact with; the fourth guide plate will perform directional diversion on the gas it comes into contact with, so that the gas flows toward the outlet of the guide plate sub-array.

[0013] Specifically, the static attribute data includes: inflow distance , first distance and outflow distance ; Among them, the inflow distance Distance from outflow The values of are equal to the inner diameter distance of the gas purification device; wherein the first distance Indicates the straight-line distance of gas flowing between the first guide plate and the second guide plate; inflow distance Distance from outflow The values of are all equal to the inner diameter distance of the gas purification device;

[0014] The multiple sets of dynamic attribute data include: a second distance set ;

[0015] The collection strategy of the second distance set specifically includes:

[0016] S11: extracting the actual position of the second collision turning point of the gas on the second guide plate;

[0017] S12: Preset the outflow direction of the third guide plate to overlap with the outflow direction of the second guide plate;

[0018] S13: Setting the rotation angle of the third guide plate The third guide plate is controlled to rotate so that the outflow gas of the second guide plate collides with the third guide plate at different collision angles. The rotation range of the rotation angle is ;

[0019] S14: recording the actual position of the third collision turning point on the third deflector corresponding to each rotation angle during the rotation of the third deflector, to obtain a third collision turning point set;

[0020] S15: Using a distance measuring device, measure the straight-line distance between the second collision turning point and each third collision turning point in the third collision turning point set to form a second distance set. ;

[0021] in, , Indicates the rotation angle The straight-line distance between the corresponding second collision turning point and the third collision turning point.

[0022] Specifically, the multiple sets of dynamic attribute data also include: a third distance set ;

[0023] The acquisition strategy of the third distance set specifically includes:

[0024] S16: extracting a third collision turning point set, and simulating actual positions of fourth collision turning points left on the fourth guide plate when the gas flows from each third collision turning point in the third collision turning point set to the fourth guide plate;

[0025] S17; At the same time, the straight-line distance between each third collision turning point and its corresponding fourth collision turning point in the third collision turning point set is measured by the distance measuring device to form a third distance set ,in, , Indicates the rotation angle The corresponding straight-line distance between the third collision turning point and the fourth collision turning point.

[0026] Specifically, obtaining the purification attenuation coefficient includes the following steps:

[0027] S21: extracting historical purification data, wherein the historical purification data includes: historical purification times, historical purified gas volumes, and actual purification ratios;

[0028] S22: importing the historical purification data into a purification attenuation coefficient calculation strategy to obtain a purification attenuation coefficient rg;

[0029] Preferably, the purification attenuation coefficient calculation strategy is specifically as follows:

[0030] ;

[0031] Where I is the number of historical purifications, and i is the index of the number of historical purifications;

[0032] is the weight coefficient of the historical purified gas capacity, which is used to characterize the influence of the historical gas capacity change on the calculation result of the purification attenuation coefficient;

[0033] is the weight coefficient of the historical actual purification ratio, which is used to characterize the influence of the change of the historical purification ratio on the calculation result of the purification attenuation coefficient;

[0034] are the historical purified gas capacity and actual purification ratio during the i-th historical purification, respectively;

[0035] are the mean of historical purified gas capacity and the mean of actual purification ratio in 1 historical purification;

[0036] are respectively the maximum historical purified gas capacity and the minimum historical purified gas capacity in one historical purification;

[0037] are the highest actual purification ratio and the lowest actual purification ratio in 1 historical purification, respectively;

[0038] S23: Importing the purification attenuation coefficient rg into the target purification time evaluation strategy to calculate and obtain the target purification time T. The target purification time evaluation strategy is:

[0039] ;

[0040] Among them, exp is the exponential operation, It is the actual purification time of the gas purification device in the last gas purification process.

[0041] Specifically, the diversion control model is configured with the following strategies:

[0042] S31: Construct gas flow sub-model;

[0043] Preferably, the output formula of the gas flow sub-model is:

[0044] ;

[0045] in, is the gas density; p is the gas pressure; is the gas flow rate into the guide plate; is the gas flow rate out of the guide plate;

[0046] is the collision angle of the gas flowing into the deflector; is the normal vector of the deflector;

[0047] It represents the velocity field divergence of the gas at the outlet of the guide plate, which is obtained by calculating the rate of change of the gas outlet velocity along different coordinate directions; Represents the pressure gradient force during gas flow, which is obtained by calculating the rate of change of gas pressure in different spatial directions;

[0048] S32: Initial gas velocity and inflow distance of the passing gas Calculate the gas inflow time ;

[0049] S33: Input the initial gas flow rate into the gas flow sub-model to obtain the first gas flow rate of the gas flowing from the first guide plate to the second guide plate At the same time, the first residence time of the gas flowing within the first distance is calculated based on the first distance ;

[0050] S34: The first gas flow rate Input to the gas flow sub-model to obtain the second gas flow rate of the gas flowing from the second guide plate to the third guide plate , and according to the second distance set Calculate and obtain the second residence time set when the gas flows within the straight-line distance corresponding to the second distance set ,in, , Indicates that the gas The second dwell time during internal flow.

[0051] Specifically, the strategy for configuring the diversion control model also includes:

[0052] S35: The second gas flow rate And the second distance set The collision angle of the gas corresponding to each third collision turning point is input into the gas flow sub-model to obtain the third gas flow rate set of the gas flowing from the third guide plate to the fourth guide plate ;

[0053] in, , Indicates the rotation angle a third gas flow rate corresponding to the gas flowing through the third guide plate to the fourth guide plate;

[0054] At the same time, according to the third distance set Calculate and obtain the third residence time set when the gas flows within the third distance set ;

[0055] in, , Indicates the rotation angle a third residence time of the corresponding gas when flowing within the third distance set;

[0056] S36: Extract outflow distance and the third gas flow rate set , calculate and obtain the gas outflow duration set ,in, , Indicates the rotation angle The corresponding gas outflow time.

[0057] Specifically, obtaining the multiple sets of diversion control parameters includes:

[0058] S41: Extraction gas inflow duration , first stay duration , Second stay duration set , the third stay duration set and gas outflow duration ;

[0059] S42: Based on the data extracted in S41, calculate and obtain the set of gas expected residence time , ;

[0060] in, .

[0061] Specifically, screening multiple groups of diversion control parameters based on target purification time includes:

[0062] Preset redundant purification time , calculate the target purification time T and redundant purification time and as a safe purification time ;

[0063] Extract each expected residence time in the gas expected residence time set and compare each expected residence time with the safety purification time Perform difference processing to obtain a set of duration difference values , and sort the differences in the duration difference set in ascending order, and select the first 10% of the sequence as the candidate stay durations;

[0064] Obtaining the rotation angle of the third guide plate corresponding to each alternative stay time as an alternative guide control parameter;

[0065] The current rotation angle of the third guide plate is detected in real time, and the angle adjustment amount corresponding to each alternative guide control parameter is obtained. The minimum angle adjustment amount is selected to control the third guide plate of the guide plate array in the gas purification device.

[0066] In addition, the present invention provides a control system for gas purification including the following modules:

[0067] Data acquisition module, control parameter acquisition module and control module;

[0068] The data acquisition module is used to collect historical purification data of the gas purification device and static attribute data and multiple sets of dynamic attribute data of the guide plate array in the gas purification device;

[0069] The control parameter acquisition module includes: a purification time acquisition unit and a control parameter calculation unit;

[0070] The purification time acquisition unit obtains a purification attenuation coefficient according to historical purification data, and obtains a target purification time through the purification attenuation coefficient;

[0071] The control parameter calculation unit is used to obtain the initial gas flow rate of the gas, build a diversion control model, and import the initial gas flow rate, the static attribute data and multiple sets of dynamic attribute data into the diversion control model to calculate and obtain multiple sets of diversion control parameters;

[0072] The control module screens multiple groups of diversion control parameters according to the target purification time, obtains the target diversion control parameters, and controls the diversion plate array in the gas purification device.

[0073] Compared with the prior art, the technical effects of the present invention are as follows:

[0074] 1. The present invention dynamically adjusts the control parameters of the guide plate. The system can optimize the gas flow path according to the initial flow rate of the gas and the purification requirements, ensuring sufficient contact between the gas and the purification medium, thereby improving the purification efficiency.

[0075] 2. By collecting historical purification data and calculating the purification attenuation coefficient, the present invention can evaluate the performance attenuation of the purification device in real time and compensate by optimizing the purification time, thereby extending the service life of the device.

[0076] 3. The present invention can dynamically adjust the control parameters of the guide plate according to the initial flow rate of the gas and the purification requirements, adapt to the purification requirements under different working conditions, avoid excessive or insufficient purification, and ensure the stability and consistency of the purification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0078] Figure 1 Schematic diagram of a flow chart of a control method for gas purification according to the present invention;

[0079] Figure 2 This is a schematic structural diagram of a control system for gas purification according to the present invention;

[0080] Figure 3 This is a schematic diagram of a scenario in which gas is purified by controlling a gas purification device according to the present invention. DETAILED DESCRIPTION

[0081] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0082] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0083] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0084] Example 1

[0085] like Figure 1 As shown, the embodiment of the present invention discloses a control method for gas purification, comprising the following specific steps:

[0086] Collecting historical purification data of the gas purification device and static attribute data and multiple sets of dynamic attribute data of the guide plate array in the gas purification device;

[0087] The guide plate array in the gas purification device comprises: a plurality of guide plate sub-arrays, wherein each guide plate sub-array is composed of four guide plates, a first guide plate and a third guide plate are distributed from top to bottom on one side wall of the gas purification device, and a second guide plate and a fourth guide plate are distributed from top to bottom on the other side wall of the gas purification device;

[0088] The first guide plate, the second guide plate and the fourth guide plate are non-rotatable guide plates with fixed angles, and the third guide plate is a rotatable guide plate with no angle; see Figure 3 , Figure 3 The direction of the arrow is the direction of gas flow.

[0089] The gas enters from the air inlet of the guide plate sub-array, passes through the first guide plate, the second guide plate, the third guide plate, and the fourth guide plate in sequence, and leaves the first collision turning point, the second collision turning point, the third collision turning point, and the fourth collision turning point on the four guide plates in sequence;

[0090] Among them, the first guide plate, the second guide plate and the third guide plate will slow down and divert the gas they come into contact with; the fourth guide plate only performs directional diversion on the gas it comes into contact with, so that the gas flows toward the outlet of the guide plate sub-array.

[0091] The static attribute data includes: inflow distance , first distance and outflow distance ; Among them, the inflow distance Distance from outflow The values of are equal to the inner diameter distance of the gas purification device; wherein the first distance Indicates the straight-line distance of gas flowing between the first guide plate and the second guide plate;

[0092] The multiple sets of dynamic attribute data include: a second distance set ;

[0093] The collection strategy of the second distance set specifically includes:

[0094] S11: extracting the actual position of the second collision turning point of the gas on the second guide plate;

[0095] S12: Preset the outflow direction of the third guide plate to overlap with the outflow direction of the second guide plate;

[0096] S13: Set the rotation angle The third guide plate is controlled to rotate so that the outflow gas of the second guide plate collides with the third guide plate at different collision angles. The rotation range of the rotation angle is ;

[0097] S14: recording the actual position of the third collision turning point on the third deflector corresponding to each rotation angle during the rotation of the third deflector, to obtain a third collision turning point set;

[0098] S15: Using a distance measuring device, measure the straight-line distance between the second collision turning point and each third collision turning point in the third collision turning point set to form a second distance set. ;

[0099] in, , Indicates the rotation angle The straight-line distance between the corresponding second collision turning point and the third collision turning point.

[0100] The multiple sets of dynamic attribute data also include: a third distance set ;

[0101] The acquisition strategy of the third distance set specifically includes:

[0102] S16: extracting a third collision turning point set, and simulating actual positions of fourth collision turning points left on the fourth guide plate when the gas flows from each third collision turning point in the third collision turning point set to the fourth guide plate;

[0103] S17; At the same time, the straight-line distance between each third collision turning point and its corresponding fourth collision turning point in the third collision turning point set is measured by the distance measuring device to form a third distance set ,in, , Indicates the rotation angle The corresponding straight-line distance between the third collision turning point and the fourth collision turning point.

[0104] Obtain the purification attenuation coefficient based on historical purification data, and obtain the target purification time through the purification attenuation coefficient;

[0105] The acquisition of the purification attenuation coefficient comprises the following steps:

[0106] S21: extracting historical purification data, wherein the historical purification data includes: historical purification times, historical purified gas volumes, and actual purification ratios;

[0107] S22: importing the historical purification data into the purification attenuation coefficient calculation strategy to calculate and obtain the purification attenuation coefficient rg;

[0108] Preferably, the purification attenuation coefficient calculation strategy is specifically as follows:

[0109] ;

[0110] Where I is the number of historical purifications, and i is the index of the number of historical purifications;

[0111] is the weight coefficient of the historical purified gas capacity, which is used to characterize the influence of the historical gas capacity change on the calculation result of the purification attenuation coefficient;

[0112] is the weight coefficient of the historical actual purification ratio, which is used to characterize the influence of the change of the historical purification ratio on the calculation result of the purification attenuation coefficient;

[0113] Preferably, and It is a constant preset according to the specific purification process and gas type, and meets greater than 0, Greater than 0.

[0114] Preferably, you can set ,at this time and Represents the relative importance of historical purified gas capacity and historical actual purification ratio in evaluating purification attenuation. For example, it can be set based on empirical data or experimental results. , , indicating that both are equally important, or adjusted according to actual conditions.

[0115] are the historical purified gas capacity and actual purification ratio during the i-th historical purification, respectively;

[0116] are the mean of historical purified gas capacity and the mean of actual purification ratio in 1 historical purification;

[0117] are respectively the maximum historical purified gas capacity and the minimum historical purified gas capacity in one historical purification;

[0118] are the highest actual purification ratio and the lowest actual purification ratio in 1 historical purification, respectively;

[0119] S23: Importing the purification attenuation coefficient rg into the target purification time evaluation strategy to calculate and obtain the target purification time T. The target purification time evaluation strategy is:

[0120] ;

[0121] Among them, exp is the exponential operation, It is the actual purification time of the gas purification device in the last gas purification process.

[0122] Obtaining an initial gas flow rate of the gas, building a diversion control model, and importing the initial gas flow rate, the static property data, and multiple sets of dynamic property data into the diversion control model to calculate and obtain multiple sets of diversion control parameters;

[0123] The diversion control model is configured with the following strategies:

[0124] S31: Construct a gas flow sub-model, wherein the output formula of the gas flow sub-model is: ;

[0125] in, is the gas density; p is the gas pressure; is the gas flow rate into the guide plate; is the gas flow rate out of the guide plate; is the collision angle of the gas flowing into the deflector; is the normal vector of the deflector; It represents the velocity field divergence of the gas at the outlet of the guide plate, and is used to describe the change of the flow velocity at the gas outlet in various spatial directions. It is obtained by calculating the rate of change of the gas outlet velocity along different coordinate directions. Represents the pressure gradient force during gas flow, which is used to describe the driving force generated by the pressure change at different positions during gas flow. It is obtained by calculating the rate of change of gas pressure in different spatial directions.

[0126] S32: Initial gas velocity and inflow distance of the passing gas Calculate the gas inflow time ;

[0127] S33: Input the initial gas flow rate into the gas flow sub-model to obtain the first gas flow rate of the gas flowing from the first guide plate to the second guide plate At the same time, the first residence time of the gas flowing within the first distance is calculated based on the first distance ;

[0128] S34: The first gas flow rate Input to the gas flow sub-model to obtain the second gas flow rate of the gas flowing from the second guide plate to the third guide plate , and according to the second distance set Calculate and obtain the second residence time set when the gas flows within the straight-line distance corresponding to the second distance set ,in, , Indicates that the gas The second dwell time during internal flow.

[0129] S35: The second gas flow rate And the second distance set The collision angle of the gas corresponding to each third collision turning point is input into the gas flow sub-model to obtain the third gas flow rate set of the gas flowing from the third guide plate to the fourth guide plate ;

[0130] in, , Indicates the rotation angle a third gas flow rate corresponding to the gas flowing through the third guide plate to the fourth guide plate;

[0131] At the same time, according to the third distance set Calculate and obtain the third residence time set when the gas flows within the third distance set ;

[0132] in, , Indicates the rotation angle a third residence time of the corresponding gas when flowing within the third distance set;

[0133] S36: Extract outflow distance and the third gas flow rate set , calculate and obtain the gas outflow duration set ,in, , Indicates the rotation angle The corresponding gas outflow time.

[0134] Multiple groups of diversion control parameters are screened according to the target purification time, the target diversion control parameters are obtained, and the diversion plate array in the gas purification device is controlled.

[0135] The acquisition of the multiple sets of diversion control parameters includes:

[0136] S41: Extraction gas inflow duration , first stay duration , Second stay duration set , the third stay duration set and gas outflow duration ;

[0137] S42: Based on the data extracted in S41, calculate and obtain the set of gas expected residence time , ;

[0138] in, .

[0139] Screening multiple groups of diversion control parameters based on target purification time specifically includes:

[0140] Preset redundant purification time , calculate the target purification time T and redundant purification time and as a safe purification time ;

[0141] Extract each expected residence time in the gas expected residence time set and compare each expected residence time with the safety purification time Perform difference processing to obtain a set of duration difference values , and sort the differences in the duration difference set in ascending order, and select the first 10% of the sequence as the candidate stay durations;

[0142] Obtaining the rotation angle of the third guide plate corresponding to each alternative stay time as an alternative guide control parameter;

[0143] The current rotation angle of the third guide plate is detected in real time, and the angle adjustment amount corresponding to each alternative guide control parameter is obtained. The minimum angle adjustment amount is selected to control the third guide plate of the guide plate array in the gas purification device.

[0144] Example 2

[0145] like Figure 2 As shown, an embodiment of the present invention discloses a control system for gas purification, including the following modules:

[0146] Data acquisition module, control parameter acquisition module and control module;

[0147] The data acquisition module is used to collect historical purification data of the gas purification device and static attribute data and multiple sets of dynamic attribute data of the guide plate array in the gas purification device;

[0148] The control parameter acquisition module includes: a purification time acquisition unit and a control parameter calculation unit;

[0149] The purification time acquisition unit obtains a purification attenuation coefficient according to historical purification data, and obtains a target purification time through the purification attenuation coefficient;

[0150] The control parameter calculation unit is used to obtain the initial gas flow rate of the gas, build a diversion control model, and import the initial gas flow rate, the static attribute data and multiple sets of dynamic attribute data into the diversion control model to calculate and obtain multiple sets of diversion control parameters;

[0151] The control module screens multiple groups of diversion control parameters according to the target purification time, obtains the target diversion control parameters, and controls the diversion plate array in the gas purification device.

[0152] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0153] It should be understood that determining B based on A does not mean determining B based solely on A. B can also be determined based on A and / or other information.

[0154] The above embodiments can be implemented in whole or in part via software, hardware, firmware, or any other combination. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. A computer program product comprises one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions according to the embodiments of the present invention are fully or partially generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. Computer instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, computer instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center via a wired network or / and a wireless network. The computer-readable storage medium can be any available medium accessible by a computer or a data storage device such as a server or data center that contains a collection of one or more available media. Available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media. The semiconductor media can be a solid-state drive.

[0155] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed in the present invention can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present invention.

[0156] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0157] In the several embodiments provided by the present invention, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of units is only one type. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0158] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0159] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0160] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0161] In summary, compared with the prior art, the technical effects of the present invention are as follows:

[0162] 1. The present invention dynamically adjusts the control parameters of the guide plate. The system can optimize the gas flow path according to the initial flow rate of the gas and the purification requirements, ensuring sufficient contact between the gas and the purification medium, thereby improving the purification efficiency.

[0163] 2. By collecting historical purification data and calculating the purification attenuation coefficient, the present invention can evaluate the performance attenuation of the purification device in real time and compensate by optimizing the purification time, thereby extending the service life of the device.

[0164] 3. The present invention can dynamically adjust the control parameters of the guide plate according to the initial flow rate of the gas and the purification requirements, adapt to the purification requirements under different working conditions, avoid excessive or insufficient purification, and ensure the stability and consistency of the purification effect.

[0165] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A control method for gas purification, characterized in that: The method comprises the following specific steps: Collecting historical purification data of the gas purification device and static attribute data and multiple sets of dynamic attribute data of the guide plate array in the gas purification device; Obtain the purification attenuation coefficient based on historical purification data, and obtain the target purification time through the purification attenuation coefficient; Obtaining an initial gas flow rate of the gas, building a diversion control model, and importing the initial gas flow rate, the static property data, and multiple sets of dynamic property data into the diversion control model to calculate and obtain multiple sets of diversion control parameters; Multiple groups of diversion control parameters are screened according to the target purification time, the target diversion control parameters are obtained, and the diversion plate array in the gas purification device is controlled.

2. A control method for gas purification according to claim 1, characterized in that: The guide plate array in the gas purification device comprises: a plurality of guide plate sub-arrays, wherein each guide plate sub-array is composed of four guide plates, a first guide plate and a third guide plate are distributed from top to bottom on one side wall of the gas purification device, and a second guide plate and a fourth guide plate are distributed from top to bottom on the other side wall of the gas purification device; The first guide plate, the second guide plate and the fourth guide plate are non-rotatable guide plates with fixed angles, and the third guide plate is a rotatable guide plate with no angle; The gas enters from the air inlet of the guide plate sub-array, passes through the first guide plate, the second guide plate, the third guide plate, and the fourth guide plate in sequence, and leaves the first collision turning point, the second collision turning point, the third collision turning point, and the fourth collision turning point on the four guide plates in sequence; Among them, the first guide plate, the second guide plate and the third guide plate will slow down and divert the gas they come into contact with; the fourth guide plate will perform directional diversion on the gas it comes into contact with, so that the gas flows toward the outlet of the guide plate sub-array.

3. A control method for gas purification according to claim 2, characterized in that: The static attribute data includes: inflow distance , first distance and outflow distance ; Among them, the first distance Indicates the straight-line distance of gas flowing between the first guide plate and the second guide plate; inflow distance Distance from outflow The values of are all equal to the inner diameter distance of the gas purification device; The multiple sets of dynamic attribute data include: a second distance set ; The collection strategy of the second distance set specifically includes: S11: extracting the actual position of the second collision turning point of the gas on the second guide plate; S12: Preset the outflow direction of the third guide plate to overlap with the outflow direction of the second guide plate; S13: Setting the rotation angle of the third guide plate The third guide plate is controlled to rotate so that the outflow gas of the second guide plate collides with the third guide plate at different collision angles. The rotation range of the rotation angle is ; S14: recording the actual position of the third collision turning point on the third deflector corresponding to each rotation angle during the rotation of the third deflector, to obtain a third collision turning point set; S15: Using a distance measuring device, measure the straight-line distance between the second collision turning point and each third collision turning point in the third collision turning point set to form a second distance set. ; in, , Indicates the rotation angle The straight-line distance between the corresponding second collision turning point and the third collision turning point.

4. A control method for gas purification according to claim 3, characterized in that: The multiple sets of dynamic attribute data also include: a third distance set ; The acquisition strategy of the third distance set specifically includes: S16: extracting a third collision turning point set, and simulating actual positions of fourth collision turning points left on the fourth guide plate when the gas flows from each third collision turning point in the third collision turning point set to the fourth guide plate; S17; At the same time, the straight-line distance between each third collision turning point and its corresponding fourth collision turning point in the third collision turning point set is measured by the distance measuring device to form a third distance set ,in, , Indicates the rotation angle The corresponding straight-line distance between the third collision turning point and the fourth collision turning point.

5. A control method for gas purification according to claim 4, characterized in that: The acquisition of the purification attenuation coefficient comprises the following steps: S21: extracting historical purification data, wherein the historical purification data includes: historical purification times, historical purified gas volumes, and actual purification ratios; S22: importing the historical purification data into the purification attenuation coefficient calculation strategy to calculate and obtain the purification attenuation coefficient rg; The purification attenuation coefficient calculation strategy is specifically as follows: ； Where I is the number of historical purifications, and i is the index of the number of historical purifications; is the weight coefficient of the historical purified gas capacity, which is used to characterize the influence of the historical gas capacity change on the calculation result of the purification attenuation coefficient; is the weight coefficient of the historical actual purification ratio, which is used to characterize the influence of the change of the historical purification ratio on the calculation result of the purification attenuation coefficient; are the historical purified gas capacity and actual purification ratio during the i-th historical purification, respectively; are the mean of historical purified gas capacity and the mean of actual purification ratio in 1 historical purification; are respectively the maximum historical purified gas capacity and the minimum historical purified gas capacity in one historical purification; are the highest actual purification ratio and the lowest actual purification ratio in 1 historical purification, respectively; S23: Importing the purification attenuation coefficient rg into the target purification time evaluation strategy to calculate and obtain the target purification time T. The target purification time evaluation strategy is: ； Among them, exp is the exponential operation, It is the actual purification time of the gas purification device in the last gas purification process.

6. A control method for gas purification according to claim 5, characterized in that: The diversion control model is configured with the following strategies: S31: Construct gas flow sub-model; S32: Initial gas velocity and inflow distance of the passing gas Calculate the gas inflow time ; S33: Input the initial gas flow rate into the gas flow sub-model to obtain the first gas flow rate of the gas flowing from the first guide plate to the second guide plate At the same time, the first residence time of the gas flowing within the first distance is calculated based on the first distance ; S34: The first gas flow rate Input to the gas flow sub-model to obtain the second gas flow rate of the gas flowing from the second guide plate to the third guide plate , and according to the second distance set Calculate and obtain the second residence time set when the gas flows within the straight-line distance corresponding to the second distance set ,in, , Indicates that the gas The second dwell time during internal flow.

7. A control method for gas purification according to claim 6, characterized in that: The strategy for configuring the diversion control model also includes: S35: The second gas flow rate And the second distance set The collision angle of the gas corresponding to each third collision turning point is input into the gas flow sub-model to obtain the third gas flow rate set of the gas flowing from the third guide plate to the fourth guide plate ; in, , Indicates the rotation angle a third gas flow rate corresponding to the gas flowing through the third guide plate to the fourth guide plate; At the same time, according to the third distance set Calculate and obtain the third residence time set when the gas flows within the third distance set ; in, , Indicates the rotation angle a third residence time of the corresponding gas when flowing within the third distance set; S36: Extract outflow distance and the third gas flow rate set , calculate and obtain the gas outflow duration set ,in, , Indicates the rotation angle The corresponding gas outflow time.

8. A control method for gas purification according to claim 7, characterized in that: The acquisition of the multiple sets of diversion control parameters includes: S41: Extraction gas inflow duration , first stay duration , Second stay duration set , the third stay duration set and gas outflow duration ; S42: Based on the data extracted in S41, calculate and obtain the set of gas expected residence time , ; in, .

9. A control method for gas purification according to claim 8, characterized in that: Screening multiple groups of diversion control parameters based on target purification time specifically includes: Preset redundant purification time , calculate the target purification time T and redundant purification time and as a safe purification time ; Extract each expected residence time in the gas expected residence time set and compare each expected residence time with the safety purification time Perform difference processing to obtain a set of duration difference values , and sort the differences in the duration difference set in ascending order, and select the first 10% of the sequence as the candidate stay durations; Obtaining the rotation angle of the third guide plate corresponding to each alternative stay time as an alternative guide control parameter; The current rotation angle of the third guide plate is detected in real time, and the angle adjustment amount corresponding to each alternative guide control parameter is obtained. The minimum angle adjustment amount is selected to control the third guide plate of the guide plate array in the gas purification device.

10. A control system for gas purification, used to implement a control method for gas purification according to any one of claims 1 to 9, characterized in that: The control system includes: a data acquisition module, a control parameter acquisition module and a control module; The data acquisition module is used to collect historical purification data of the gas purification device and static attribute data and multiple sets of dynamic attribute data of the guide plate array in the gas purification device; The control parameter acquisition module includes: a purification time acquisition unit and a control parameter calculation unit; The purification time acquisition unit obtains a purification attenuation coefficient according to historical purification data, and obtains a target purification time through the purification attenuation coefficient; The control parameter calculation unit is used to obtain the initial gas flow rate of the gas, build a diversion control model, and import the initial gas flow rate, the static attribute data and multiple sets of dynamic attribute data into the diversion control model to calculate and obtain multiple sets of diversion control parameters; The control module screens multiple groups of diversion control parameters according to the target purification time, obtains the target diversion control parameters, and controls the diversion plate array in the gas purification device.

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