Basalt fiber multi-plate drawing control method, system, device and medium

Abstract

The application discloses a basalt fiber multi-escape plate wire drawing control method, system, device and medium, including the following steps: obtaining the real-time temperature, real-time viscosity, melt flow and target fiber diameter at the target escape plate; inputting the real-time temperature, real-time viscosity, melt flow and target fiber diameter into a preset dynamic balance equation to obtain a dynamic balance index; judging whether the dynamic balance index is greater than a preset index threshold, if yes, inputting the melt flow into a preset flow compensation equation to obtain a flow compensation value; after guiding the wire drawing control process to reach a preset time based on the flow compensation value, judging again whether the dynamic balance index is greater than the preset index threshold; if yes, inputting the real-time temperature into a preset temperature compensation equation to obtain a temperature compensation value, and guiding the wire drawing control process based on the temperature compensation value, the application has the advantages of reasonable planning of priority order of control indicators and improved wire drawing control efficiency.

Description

Technical Field

[0001] This application relates to the field of basalt fiber preparation control technology, and in particular to a method, system, equipment and medium for controlling the multi-spindle drawing of basalt fibers. Background Technology

[0002] Continuous basalt fiber drawing involves passing high-temperature molten basalt through a trough-shaped container, a spinneret, and nozzles distributed at the bottom of the spinneret to guide the fiber flow. The fiber is then drawn into continuous fibers using a variable frequency drawing machine. Currently, spinnerets for producing continuous basalt fibers typically have 200, 400, or 800 holes. As the number of holes and spinnerets increases, higher requirements are placed on the temperature distribution and dimensional stability of the basalt fiber drawing spinneret at high temperatures.

[0003] Currently, for basalt fiber drawing and forming kilns with multiple sprues, it is necessary to control the consistency and stability of the fiber drawing diameter at each sprue during the drawing and forming process in order to improve product capacity and yield. However, existing basalt fiber drawing control methods have single monitoring indicators, low monitoring accuracy, and single adjustment methods, making it difficult to quickly control the fiber drawing to the ideal state, resulting in low control efficiency. Summary of the Invention

[0004] The main purpose of this application is to provide a method, system, equipment and medium for controlling the drawing of basalt fibers using multiple sprues, in order to solve the technical problem of low control efficiency in existing basalt fiber drawing control methods.

[0005] To achieve the above objectives, this application provides a method for controlling the drawing of basalt fiber through a multi-spindle filament, comprising the following steps:

[0006] Obtain the real-time temperature, real-time viscosity, melt flow rate, and target fiber diameter at the target perforator.

[0007] Input the real-time temperature, real-time viscosity, melt flow rate and target fiber diameter into the preset dynamic equilibrium equation to obtain the dynamic equilibrium index;

[0008] Determine whether the dynamic equilibrium index is greater than the preset index threshold. If not, return to obtain the real-time temperature, real-time viscosity, melt flow rate, and target fiber diameter at the target slot.

[0009] If so, the melt flow rate is input into the preset flow compensation equation to obtain the flow compensation value. Based on the flow compensation value, the drawing control process is guided to reach the preset time, and then the process returns to obtain the real-time temperature, real-time viscosity, melt flow rate and target fiber diameter at the target die plate.

[0010] The dynamic equilibrium index is checked again to see if it is greater than the preset index threshold. If not, the process returns to obtaining the real-time temperature, real-time viscosity, melt flow rate, and target fiber diameter at the target perforator.

[0011] If so, the real-time temperature is input into the preset temperature compensation equation to obtain the temperature compensation value, which is then used to guide the wire drawing control process.

[0012] Optionally, the expression for the dynamic equilibrium equation is:

[0013] BI=|1-[∑(T i *Q i ) / (η i *d i 2 )] / K|;

[0014] In the formula, BI is the dynamic equilibrium index, and T i Let Q be the real-time temperature of the i-th target sprue. i Let η be the melt flow rate of the i-th target baffle. i Let d be the real-time viscosity of the i-th target sprue. i Let be the target fiber diameter at the i-th target sprue, K be the standard balance index, i = 1, 2, 3, ..., n, and n be the number of target sprues.

[0015] Optionally, the real-time viscosity η i The expression is:

[0016] η i =A*exp(E / (R*T i )) + B*ln(Q i / Q0);

[0017] In the formula, A is the first compensation factor, B is the second compensation factor, E is the viscous flow activation energy, R is the gas constant, and Q0 is the reference flow rate.

[0018] Optionally, the expression for the flow compensation equation is:

[0019] ΔQ=ε(Q i / Q max ) 2 *sgn(d i -d);

[0020] In the formula, ΔQ is the flow compensation value, ε is the flow gain coefficient, and Q max The maximum flow rate is designed for a single perforated plate, where d is the standard diameter of the fiber, and sgn(d) i -d) is the sign function, d i When d > d, sgn(d i -d)=-1,di When <d, sgn(d) i -d)=1.

[0021] Optionally, the temperature compensation equation can be expressed as follows:

[0022] ΔT=0.15 / ( η / T)*(d i -d)+d(ΔQ) / dt*γ;

[0023] In the formula, ΔT is the temperature compensation value. η / T is the viscosity-temperature gradient, representing the instantaneous rate of change of viscosity for every 1°C change in temperature, and γ is the inhibition coefficient.

[0024] Optionally, before obtaining the real-time temperature, real-time viscosity, melt flow rate, and target fiber diameter at the target spinneret, the following steps are also included:

[0025] The raw material composition of basalt fiber was analyzed to obtain the alumina content and iron oxide content;

[0026] Based on the alumina content and iron oxide content, it is determined whether the abnormal triggering condition has been met; wherein, the abnormal triggering condition is that the alumina content is greater than the preset first content threshold or the iron oxide content is greater than the preset second content threshold.

[0027] If so, input the alumina content and iron oxide content into the preset viscosity feedforward compensation model to obtain the viscosity feedforward compensation value Δη;

[0028] The pre-adjustment parameters for wire drawing are obtained based on the viscosity feedforward compensation value Δη. The pre-adjustment parameters for wire drawing include the wire drawing adjustment speed V' and the wire drawing compensation temperature T', where V'=V0*(1-0.05Δη), V0 is the initial wire drawing speed, and T'=δ*Δη, where δ is the proportional coefficient.

[0029] Alternatively, the expression for the viscosity feedforward compensation model is:

[0030] Δη=0.02(C1-15%)+0.005(C2-12%);

[0031] In the formula, C1 represents the aluminum oxide content, and C2 represents the iron oxide content.

[0032] To achieve the above objectives, this application also provides a basalt fiber multi-spindle drawing control system, comprising:

[0033] The parameter acquisition module is used to acquire the real-time temperature, real-time viscosity, melt flow rate, and target fiber diameter at the target perforator.

[0034] The index acquisition module is used to input real-time temperature, real-time viscosity, melt flow rate and target fiber diameter into a preset dynamic equilibrium equation to obtain the dynamic equilibrium index.

[0035] The first data processing module is used to determine whether the dynamic equilibrium index is greater than the preset index threshold. If not, it returns to obtain the real-time temperature, real-time viscosity, melt flow rate and target fiber diameter at the target slot plate.

[0036] The flow compensation module is used to input the melt flow rate into a preset flow compensation equation to obtain the flow compensation value, and based on the flow compensation value, guide the fiber drawing control process to reach a preset time, and then return to obtain the real-time temperature, real-time viscosity, melt flow rate and target fiber diameter at the target die plate.

[0037] The second data processing module is used to determine again whether the dynamic equilibrium index is greater than the preset index threshold. If not, it returns to obtain the real-time temperature, real-time viscosity, melt flow rate and target fiber diameter at the target slot plate.

[0038] The temperature compensation module is used to input the real-time temperature into a preset temperature compensation equation to obtain a temperature compensation value, which is then used to guide the wire drawing control process.

[0039] To achieve the above objectives, this application also provides a computer device, which includes a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the above-described method.

[0040] To achieve the above objectives, this application also provides a computer-readable storage medium storing a computer program, on which a processor executes the computer program to implement the above-described method.

[0041] The beneficial effects that this application can achieve are as follows:

[0042] Since the monitoring target of this application is a multi-spindle fiber drawing production line, monitoring only a single indicator is insufficient to guarantee monitoring accuracy. Therefore, the monitoring indicators of this application include the real-time temperature, real-time viscosity, melt flow rate, and target fiber diameter at the target spindle. By inputting these multiple parameters into a preset dynamic equilibrium equation, a dynamic equilibrium index can be quantitatively calculated. This allows for a comprehensive assessment of whether the state of the multi-spindle fiber drawing production line is abnormal through multi-source monitoring parameters, thus ensuring monitoring accuracy. However, the need to combine multiple monitoring indicators leads to reduced computational efficiency and lower subsequent control efficiency. Therefore, to balance monitoring accuracy with control efficiency, a compensation adjustment mechanism is triggered when the dynamic equilibrium index exceeds a preset index threshold. Here, the melt flow rate is first input into a preset flow compensation equation. The process involves obtaining flow compensation values ​​to guide the fiber drawing control process. Since flow regulation can quickly adjust the fiber drawing diameter, it is performed first to achieve a transient response. After the flow regulation continues for a preset time, multiple parameters are collected again to calculate whether the dynamic balance index meets the standard. If it does not meet the standard, the real-time temperature is input into the preset temperature compensation equation to obtain a temperature compensation value. This temperature compensation value then guides the fiber drawing control process. Although temperature regulation has a slower response, it can effectively adjust viscosity to regulate the drawing diameter. Therefore, temperature regulation is used as a lag compensation when the flow regulation effect is not ideal. By rationally planning the priority of the control indicators, the control efficiency is improved while ensuring the control effect, thus achieving the goal of production line balance. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0044] Figure 1 This is a schematic flowchart of a basalt fiber multi-spindle drawing control method in an embodiment of this application;

[0045] Figure 2 This is a schematic diagram of the framework of a basalt fiber multi-spindle drawing control system according to an embodiment of this application.

[0046] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0048] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0049] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0050] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0051] Example 1

[0052] Reference Figure 1 This embodiment provides a method for controlling the drawing of basalt fiber through a multi-spindle plate, including the following steps:

[0053] Obtain the real-time temperature, real-time viscosity, melt flow rate, and target fiber diameter at the target perforator.

[0054] Input the real-time temperature, real-time viscosity, melt flow rate and target fiber diameter into the preset dynamic equilibrium equation to obtain the dynamic equilibrium index;

[0055] Determine whether the dynamic equilibrium index is greater than the preset index threshold. If not, return to obtain the real-time temperature, real-time viscosity, melt flow rate, and target fiber diameter at the target slot.

[0056] If so, the melt flow rate is input into the preset flow compensation equation to obtain the flow compensation value;

[0057] After the fiber drawing process reaches the preset time based on the flow compensation value, it returns to the acquisition of the real-time temperature, real-time viscosity, melt flow rate and target fiber diameter at the target spindle.

[0058] The dynamic equilibrium index is checked again to see if it is greater than the preset index threshold. If not, the process returns to obtaining the real-time temperature, real-time viscosity, melt flow rate, and target fiber diameter at the target perforator.

[0059] If so, the real-time temperature is input into the preset temperature compensation equation to obtain the temperature compensation value, which is then used to guide the wire drawing control process.

[0060] In this embodiment, since the monitoring object is a multi-spindle fiber drawing production line, monitoring only a single indicator would be insufficient to guarantee monitoring accuracy. Therefore, the monitoring indicators include the real-time temperature, real-time viscosity, melt flow rate, and target fiber diameter at the target spindle. By inputting these multiple parameters into a preset dynamic equilibrium equation, a dynamic equilibrium index can be quantitatively calculated. This allows for a comprehensive assessment of the multi-spindle fiber drawing production line's status to ensure monitoring accuracy. However, the need to combine multiple monitoring indicators reduces computational efficiency and subsequent control efficiency. Therefore, to balance monitoring accuracy with control efficiency, a compensation adjustment mechanism is triggered when the dynamic equilibrium index exceeds a preset threshold. Here, the melt flow rate is first input into a preset threshold... A flow compensation equation is used to obtain a flow compensation value, which guides the fiber drawing control process. Since flow regulation can quickly adjust the fiber drawing diameter, it is performed first to achieve a transient response. After the flow regulation continues for a preset time, multiple parameters are collected again to calculate whether the dynamic balance index meets the standard. If it does not meet the standard, the real-time temperature is input into a preset temperature compensation equation to obtain a temperature compensation value, which guides the fiber drawing control process. Although temperature regulation has a slower response, it can effectively adjust viscosity to adjust the drawing diameter. Therefore, temperature regulation is used as a lag compensation when the flow regulation effect is not ideal. By rationally planning the priority of the control indicators, the control efficiency is improved while ensuring the control effect, so as to achieve the goal of production line balance.

[0061] As an optional implementation method, the expression for the dynamic equilibrium equation is:

[0062] BI=|1-[∑(T i *Q i ) / (η i *d i 2 )] / K|;

[0063] In the formula, BI is the dynamic equilibrium index, and T i Let Q be the real-time temperature of the i-th target sprue. i Let η be the melt flow rate of the i-th target baffle. i Let d be the real-time viscosity of the i-th target sprue. i Let be the target fiber diameter at the i-th target sprue, K be the standard balance index, i = 1, 2, 3, ..., n, and n be the number of target sprues.

[0064] In this embodiment, the dynamic equilibrium index BI can be quantitatively calculated by inputting multiple collected monitoring parameters into the aforementioned dynamic equilibrium equation, where T i *Q iThe product of temperature and flow rate is used to characterize the thermal energy input, reflecting the heat carried by the melt, η. i *d i 2 Used to characterize the relationship between flow resistance (viscosity) and forming energy consumption (diameter squared is related to surface tension), (T) i *Q i ) / (η i *d i 2 The value corresponding to ) is the measured balance index of a single target sprue. The sum of the measured balance indices of n target sprues can reflect the balance state of the multi-sprue fiber drawing production line. A standard balance index K is set (which can be set according to an empirical range). Here, K is determined by the thermodynamic characteristics of the furnace and reflects the energy conservation level of the system in a steady state. According to the above formula, if the sum of the measured balance indices is too greater than K or too less than K, the final dynamic balance index BI will be too large. This indicates that the sum of the measured balance indices should be within the range of the standard balance index K to meet the standard. Based on the dynamic balance equation, the dynamic balance relationship across sprues for temperature, flow rate, viscosity, and diameter is established, which can effectively link multiple source parameters, reflect and quantify the dynamic balance index of the multi-sprue fiber drawing production line as a whole, and automatically trigger a compensation and adjustment mechanism when the dynamic balance index is abnormal. This has profound guiding and reference significance.

[0065] It should be noted that the real-time temperature of the slug can be collected using an infrared thermometer, but environmental thermal radiation errors need to be compensated for; the melt flow rate can be collected using a Coriolis mass flow meter, but pressure loss correction due to viscosity needs to be considered; the target fiber diameter is the average of the diameters of multiple fibers at a single target slug, which can be detected by a laser diameter gauge or by machine vision recognition technology; the real-time viscosity can be detected by an online rotational viscometer or calculated using a viscosity prediction model.

[0066] As an optional implementation method, the real-time viscosity η i The expression is:

[0067] η i =A*exp(E / (R*T i )) + B*ln(Q i / Q0);

[0068] In the formula, A is the first compensation factor, B is the second compensation factor, E is the viscous flow activation energy, R is the gas constant, and Q0 is the reference flow rate.

[0069] In this embodiment, the above-mentioned real-time viscosity η i The expression is the calculation formula for the viscosity prediction model, which is obtained by collecting the real-time temperature T. i and melt flow rate Qi By inputting the above formula, with the first compensation factor A, the second compensation factor B, the viscous flow activation energy E, the gas constant R, and the reference flow rate Q0 all being calibrated values, the predicted real-time viscosity η can be quickly calculated. i This eliminates the need for a viscosity meter, reducing costs and further improving computational efficiency. In the above formula, A*exp(E / (R*T) i The expression B*ln(Q) is used to describe the exponential effect of temperature on viscosity. i / Q0) is used to describe the shear thinning effect caused by changes in flow rate. By superimposing the values ​​of the two, the thermodynamic and rheological responses can be combined to achieve dynamic coupling prediction of viscosity.

[0070] It should be noted that the first compensation factor A can be obtained through melt composition analysis, and is generally taken as 1.8~2.2; the second compensation factor B is equivalent to the shear thinning coefficient, and its value can be obtained by measuring the viscosity at different flow rates and fitting the curve to obtain its slope; the viscous flow activation energy E is related to the basalt composition (for example, when the SiO2 content is >50%, E≈180 kJ / mol); the reference flow rate Q0 can be taken as 60% of the design maximum flow rate.

[0071] As an optional implementation method, the expression for the flow compensation equation is:

[0072] ΔQ=ε(Q i / Q max ) 2 *sgn(d i -d);

[0073] In the formula, ΔQ is the flow compensation value, ε is the flow gain coefficient, and Q max The maximum flow rate is designed for a single perforated plate, where d is the standard diameter of the fiber, and sgn(d) i -d) is the sign function, d i When d > d, sgn(d i -d)=-1,d i When <d, sgn(d) i -d)=1.

[0074] In this embodiment, the flow gain coefficient ε is negatively correlated with the orifice diameter of the sprue; the smaller the orifice diameter, the larger the value of ε (indicating higher compensation sensitivity), typically ranging from 0.03 to 0.05. The maximum flow rate Q of a single sprue design is... max Related to the number of wells in the perforated plate, for example, an 800-well perforated plate yields 120 g / min; through the quadratic term (Q) i / Q max ) 2 Strengthen the adjustment weight of the high-flow-rate drain plate to avoid overcompensation of the low-flow-rate drain plate, ε(Q i / Q max )2 That is, to represent the flow rate that needs to be compensated, and at the same time, combined with the sign function, when d i If the diameter is greater than d, it indicates that the diameter is too large, so -1 is output to indicate that the value of ΔQ needs to be reduced to make the fiber thinner. i When ΔQ < d, output 1 to indicate that the value of ΔQ is the result of increasing the flow rate to make the fiber thicker, and finally accurately calculate the flow rate compensation value.

[0075] As an optional implementation method, the temperature compensation equation is expressed as follows:

[0076] ΔT=0.15 / ( η / T)*(d i -d)+d(ΔQ) / dt*γ;

[0077] In the formula, ΔT is the temperature compensation value. η / T is the viscosity-temperature gradient, representing the instantaneous rate of change of viscosity for every 1°C change in temperature, and γ is the inhibition coefficient.

[0078] In this embodiment, 0.15 / ( η / T)*(d i -d) is the main compensation term, and its mechanism of action is: diameter deviation (d i -d) The viscosity-temperature gradient is converted into a temperature compensation amount, where 0.15 is an empirical coefficient corresponding to the amount of viscosity change that needs to be compensated for when the diameter deviation is 1%. η / T represents the instantaneous rate of change of viscosity for every 1°C change in temperature. Since the viscosity of basalt melt decreases with increasing temperature, its gradient is always negative. This indicates that the smaller the absolute value of the gradient, the greater the temperature compensation value required for the same diameter deviation (low-viscosity melts require a larger temperature rise correction diameter); (d i -d) represents the deviation of the single-spindle fiber diameter from the standard diameter. d(ΔQ) / dt*γ is a dynamic correction term, the purpose of which is to suppress secondary fluctuations caused by sudden changes in flow rate. Here, d(ΔQ) / dt represents the rate of change of flow rate, that is, the trend of change of flow rate adjustment per unit time (positive value is acceleration adjustment, negative value is deceleration adjustment). The suppression coefficient γ is used to suppress temperature overshoot caused by rapid flow rate adjustment, and is generally taken as 0.02~0.03. After substituting the parameters into the above formula, the temperature compensation value ΔT can be accurately calculated.

[0079] As an optional implementation, before obtaining the real-time temperature, real-time viscosity, melt flow rate, and target fiber diameter at the target permeator, the following steps are also included:

[0080] The raw material composition of basalt fiber was analyzed to obtain the alumina content and iron oxide content;

[0081] Based on the alumina content and iron oxide content, it is determined whether the abnormal triggering condition has been met; wherein, the abnormal triggering condition is that the alumina content is greater than the preset first content threshold or the iron oxide content is greater than the preset second content threshold.

[0082] If so, input the alumina content and iron oxide content into the preset viscosity feedforward compensation model to obtain the viscosity feedforward compensation value Δη;

[0083] Based on the viscosity feedforward compensation value Δη, the pre-adjustment parameters for wire drawing are obtained; among them, the pre-adjustment parameters for wire drawing include the wire drawing adjustment speed V' and the wire drawing compensation temperature T', V'=V0*(1-0.05Δη), where V0 is the initial wire drawing speed, and T'=δ*Δη, where δ is the proportionality coefficient (δ can be taken as 6~8).

[0084] In this embodiment, after the raw material is crushed, composition analysis (XRF detection) is completed within a certain period of time. This mainly includes the detection of alumina (Al2O3) content and iron oxide (Fe2O3) content. If any abnormal trigger condition is met, such as the alumina content exceeding a preset first content threshold or the iron oxide content exceeding a preset second content threshold, viscosity prediction and parameter pre-adjustment can be initiated immediately. The alumina and iron oxide contents are input into a preset viscosity feedforward compensation model to obtain the viscosity feedforward compensation value Δη. This allows for real-time prediction of viscosity deviation based on the raw material composition, enabling advance adjustment of wire drawing process parameters, including wire drawing adjustment speed V' and wire drawing compensation temperature T'. When Δη increases, the wire drawing adjustment speed V' decreases accordingly. By adjusting the wire drawing speed in advance, the diameter deviation caused by composition fluctuations is offset to prevent wire breakage. Simultaneously, the wire drawing compensation temperature T' is increased accordingly for temperature compensation. This allows for intervention against measurable interference sources (such as ore composition fluctuations) before the interference enters the melting system, further improving the wire drawing diameter qualification rate and reducing the risk of wire breakage.

[0085] As an optional implementation, the expression for the viscosity feedforward compensation model is:

[0086] Δη=0.02(C1-15%)+0.005(C2-12%);

[0087] In the formula, C1 represents the aluminum oxide content, and C2 represents the iron oxide content.

[0088] In this embodiment, after detecting the alumina content and iron oxide content, the viscosity feedforward compensation value Δη can be calculated by substituting them into the above formula. In the formula, 15% is the component threshold corresponding to the optimal fiber-forming viscosity of basalt, and 12% is the critical iron content to maintain melt fluidity. This allows for the determination of whether viscosity feedforward compensation is triggered in conjunction with fluctuations in raw material composition, thereby further improving the fiber drawing quality.

[0089] Example 2

[0090] Reference Figures 1-2 Based on the same inventive concept as the foregoing embodiments, this embodiment also provides a basalt fiber multi-spindle drawing control system, including:

[0091] The parameter acquisition module is used to acquire the real-time temperature, real-time viscosity, melt flow rate, and target fiber diameter at the target perforator.

[0092] The index acquisition module is used to input real-time temperature, real-time viscosity, melt flow rate and target fiber diameter into a preset dynamic equilibrium equation to obtain the dynamic equilibrium index.

[0093] The first data processing module is used to determine whether the dynamic equilibrium index is greater than the preset index threshold. If not, it returns to obtain the real-time temperature, real-time viscosity, melt flow rate and target fiber diameter at the target slot plate.

[0094] The flow compensation module is used to input the melt flow rate into a preset flow compensation equation to obtain the flow compensation value, and based on the flow compensation value, guide the fiber drawing control process to reach a preset time, and then return to obtain the real-time temperature, real-time viscosity, melt flow rate and target fiber diameter at the target die plate.

[0095] The second data processing module is used to determine again whether the dynamic equilibrium index is greater than the preset index threshold. If not, it returns to obtain the real-time temperature, real-time viscosity, melt flow rate and target fiber diameter at the target slot plate.

[0096] The temperature compensation module is used to input the real-time temperature into a preset temperature compensation equation to obtain a temperature compensation value, which is then used to guide the wire drawing control process.

[0097] The explanations and examples of the modules in this embodiment can be found in the methods of the foregoing embodiments, and will not be repeated here.

[0098] Example 3

[0099] Based on the same inventive concept as the foregoing embodiments, this embodiment provides a computer device, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the above-described method.

[0100] Example 4

[0101] Based on the same inventive concept as the foregoing embodiments, this embodiment provides a computer-readable storage medium storing a computer program, and a processor executes the computer program to implement the above-described method.

[0102] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A method for controlling the drawing of basalt fiber through a multi-spindle plate, characterized in that, Includes the following steps: Obtain the real-time temperature, real-time viscosity, melt flow rate, and target fiber diameter at the target perforator. Real-time temperature, real-time viscosity, melt flow rate, and target fiber diameter are input into a preset dynamic equilibrium equation to obtain the dynamic equilibrium index; the expression of the dynamic equilibrium equation is: BI=|1-[∑(T i *Q i ) / (η i *D i 2 )] / K|; In the formula, BI is the dynamic equilibrium index, and T i Let Q be the real-time temperature of the i-th target sprue. i Let η be the melt flow rate of the i-th target baffle. i Let d be the real-time viscosity of the i-th target sprue. i The target fiber diameter at the i-th target sprue, K is the standard equilibrium index, i = 1, 2, 3, ..., n, and n is the number of target sprues; real-time viscosity η i The expression for η is: i =A*exp(E / (R*T i )) +B*ln(Q i / Q0); where A is the first compensation factor, B is the second compensation factor, E is the viscous flow activation energy, R is the gas constant, and Q0 is the reference flow rate; Determine whether the dynamic equilibrium index is greater than the preset index threshold. If not, return to obtain the real-time temperature, real-time viscosity, melt flow rate, and target fiber diameter at the target slot. If so, the melt flow rate is input into the preset flow compensation equation to obtain the flow compensation value. Based on the flow compensation value, the fiber drawing control process is guided until the preset time is reached, then the process returns to obtain the real-time temperature, real-time viscosity, melt flow rate, and target fiber diameter at the target spindle. The expression of the flow compensation equation is: ΔQ=ε(Q i / Q max ) 2 *sgn(d i -d); where ΔQ is the flow compensation value, ε is the flow gain coefficient, and Q max The maximum flow rate is designed for a single perforated plate, where d is the standard diameter of the fiber, and sgn(d) i -d) is the sign function, d i When d > d, sgn(d i -d)=-1,d i When <d, sgn(d) i -d)=1; The dynamic equilibrium index is checked again to see if it is greater than the preset index threshold. If not, the process returns to obtaining the real-time temperature, real-time viscosity, melt flow rate, and target fiber diameter at the target perforator. If so, the real-time temperature is input into the preset temperature compensation equation to obtain the temperature compensation value, which is then used to guide the wire drawing control process. The temperature compensation equation is expressed as: ΔT = 0.15 / ( η / T)*(d i -d)+d(ΔQ) / dt*γ; where ΔT is the temperature compensation value, η / T is the viscosity-temperature gradient, representing the instantaneous rate of change of viscosity for every 1°C change in temperature, and γ is the inhibition coefficient.

2. The method for controlling the drawing of basalt fiber through a multi-spindle plate as described in claim 1, characterized in that, Before obtaining the real-time temperature, real-time viscosity, melt flow rate, and target fiber diameter at the target permeator, the following steps are also included: The raw material composition of basalt fiber was analyzed to obtain the alumina content and iron oxide content; Based on the alumina content and iron oxide content, it is determined whether the abnormal triggering condition has been met; wherein, the abnormal triggering condition is that the alumina content is greater than the preset first content threshold or the iron oxide content is greater than the preset second content threshold. If so, input the alumina content and iron oxide content into the preset viscosity feedforward compensation model to obtain the viscosity feedforward compensation value Δη; The pre-adjustment parameters for wire drawing are obtained based on the viscosity feedforward compensation value Δη. The pre-adjustment parameters for wire drawing include the wire drawing adjustment speed V' and the wire drawing compensation temperature T', where V'=V0*(1-0.05Δη), V0 is the initial wire drawing speed, and T'=δ*Δη, where δ is the proportional coefficient.

3. The method for controlling the drawing of basalt fiber through a multi-spindle plate as described in claim 2, characterized in that, The expression for the viscosity feedforward compensation model is: Δη=0.02(C1-15%)+0.005(C2-12%); In the formula, C1 represents the aluminum oxide content, and C2 represents the iron oxide content.

4. A control system for a basalt fiber multi-spindle drawing control method as described in any one of claims 1-3, characterized in that, include: The parameter acquisition module is used to acquire the real-time temperature, real-time viscosity, melt flow rate, and target fiber diameter at the target perforator. The index acquisition module is used to input real-time temperature, real-time viscosity, melt flow rate, and target fiber diameter into a preset dynamic equilibrium equation to obtain the dynamic equilibrium index; the expression of the dynamic equilibrium equation is: BI=|1-[∑(T i *Q i ) / (η i *D i 2 )] / K|; In the formula, BI is the dynamic equilibrium index, and T i Let Q be the real-time temperature of the i-th target sprue. i Let η be the melt flow rate of the i-th target baffle. i Let d be the real-time viscosity of the i-th target sprue. i The target fiber diameter at the i-th target sprue, K is the standard equilibrium index, i = 1, 2, 3, ..., n, and n is the number of target sprues; real-time viscosity η i The expression for η is: i =A*exp(E / (R*T i )) +B*ln(Q i / Q0); where A is the first compensation factor, B is the second compensation factor, E is the viscous flow activation energy, R is the gas constant, and Q0 is the reference flow rate; The first data processing module is used to determine whether the dynamic equilibrium index is greater than the preset index threshold. If not, it returns to obtain the real-time temperature, real-time viscosity, melt flow rate and target fiber diameter at the target slot plate. The flow compensation module, if applicable, inputs the melt flow rate into a preset flow compensation equation to obtain a flow compensation value. Based on this value, it guides the fiber drawing control process until a preset time is reached, then returns to obtain the real-time temperature, real-time viscosity, melt flow rate, and target fiber diameter at the target die. The expression for the flow compensation equation is: ΔQ = ε(Q i / Q max ) 2 *sgn(d i -d); where ΔQ is the flow compensation value, ε is the flow gain coefficient, and Q max The maximum flow rate is designed for a single perforated plate, where d is the standard diameter of the fiber, and sgn(d) i -d) is the sign function, d i When d > d, sgn(d i -d)=-1,d i When <d, sgn(d) i -d)=1; The second data processing module is used to determine again whether the dynamic equilibrium index is greater than the preset index threshold. If not, it returns to obtain the real-time temperature, real-time viscosity, melt flow rate and target fiber diameter at the target slot plate. The temperature compensation module is used to input the real-time temperature into a preset temperature compensation equation to obtain a temperature compensation value, and to guide the wire drawing control process based on the temperature compensation value. The temperature compensation equation is expressed as: ΔT = 0.15 / ( η / T)*(d i -d)+d(ΔQ) / dt*γ; where ΔT is the temperature compensation value, η / T is the viscosity-temperature gradient, representing the instantaneous rate of change of viscosity for every 1°C change in temperature, and γ is the inhibition coefficient.

5. A computer device, characterized in that, The computer device includes a memory and a processor, wherein the memory stores a computer program and the processor executes the computer program to implement the method as described in any one of claims 1-3.

6. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, and the processor executes the computer program to implement the method as described in any one of claims 1-3.

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