Roller body heating control method, device and equipment and medium

Abstract

The invention provides a heating control method, device and equipment for a roller body and a medium. The control method comprises the steps that detection temperatures of at least three different positions on the surface of the roller body are obtained; whether the surface temperature of the roller body needs to be adjusted or not is judged; when the surface temperature of the roller body needs to be adjusted; according to the temperature deviation value between the average temperature of the detection temperatures at the at least three different positions on the roller body and the preset standard temperature, calculating the temperature of the roller body, and the up-regulation proportion of the heater power is adjusted according to the environment temperature compensation amount of the environment where the roller body is located and the change rate of the average temperature of the detection temperatures at the at least three different positions on the surface of the roller body. According to the method, the drying effect of the carbon fibers passing through the sizing agent is improved, the carbon fiber tows wound on the surface of the roller body can be prevented from displacing relative to the surface of the roller body, the apparent quality of the finished carbon fibers is improved, the production line stability during preparation of the carbon fibers is not affected, and the automation degree of carbon fiber production is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of heating control, in particular to a heating control method, device, equipment and medium of a roller body. BACKGROUND

[0002] Carbon fibers are mainly composed of carbon elements, have the characteristics of high temperature resistance, friction resistance, heat conduction and corrosion resistance, and have a fiber shape, softness and can be processed into various fabrics. Due to the graphite microcrystalline structure along the fiber axis, the strength and modulus along the fiber axis direction are very high. The carbonization process of carbon fibers refers to the process of collecting and winding the carbonized carbon fiber yarn after the raw carbon fiber yarn is withdrawn, pre-oxidized, carbonized in a low-temperature furnace and a high-temperature furnace, and post-treated. The carbon fiber yarn winding process is the last process in the production process of carbon fibers, which refers to the process of collecting and winding the carbonized carbon fiber yarn through a series of mechanical devices. The stability of the carbon fiber yarn during the carbon fiber yarn winding process will directly affect the quality of the finished carbon fiber product. The carbon fiber yarn winding process may be carried out in a highland area. The seasonal variation of air temperature in the highland area is obvious, and the diurnal temperature difference is large. Due to the decrease of environmental temperature, the drying efficiency of the carbon fiber treated with sizing agent is reduced, and the carbon fiber yarn is prone to poor drying effect. In addition, when the surface temperature of the roller body and the environmental temperature are too low, the carbon fiber yarn is prone to displacement with the surface of the roller body during the winding process, which affects the apparent quality of the finished carbon fiber product and seriously affects the stability of the production line during the preparation of carbon fiber. SUMMARY

[0003] To solve the problems in the related art, the present application provides a heating control method, device, equipment and medium of a roller body.

[0004] According to a first aspect of the present application, a heating control method of a roller body is provided, the control method comprising:

[0005] obtaining detection temperatures at at least three different positions on the surface of the roller body;

[0006] determining whether the surface temperature of the roller body needs to be adjusted;

[0007] when the surface temperature of the roller body needs to be adjusted, adjusting the upward adjustment ratio of the heater power according to the temperature deviation amount between the average temperature of the detection temperatures at the at least three different positions on the roller body and the preset standard temperature, the environmental temperature compensation amount of the environment where the roller body is located, and the change rate of the average temperature of the detection temperatures at the at least three different positions on the surface of the roller body.

[0008] In some possible embodiments, when the surface temperature of the roller body needs to be adjusted, the up-regulation proportion of the heater power is adjusted according to the sum of the up-regulation proportion of the temperature deviation between the average temperature of the detected temperatures at the at least three different positions on the roller body surface and the preset standard temperature, the up-regulation proportion of the ambient temperature compensation of the environment where the roller body is located, and the up-regulation proportion of the change rate of the average temperature of the detected temperatures at the at least three different positions on the roller body surface.

[0009] When the surface temperature needs to be adjusted, the up-regulation proportion of the heater power is adjusted according to the sum of the up-regulation proportion of the temperature deviation between the average temperature of the detected temperatures at the at least three different positions on the roller body surface and the preset standard temperature, the up-regulation proportion of the ambient temperature compensation of the environment where the roller body is located, and the up-regulation proportion of the change rate of the average temperature of the detected temperatures at the at least three different positions on the roller body surface.

[0010] In some possible embodiments, the up-regulation proportion of the heater power is calculated by the following formula:

[0011]

[0012] wherein P represents the up-regulation proportion of the heater power, represents the up-regulation proportion of the temperature deviation between the average temperature of the detected temperatures at the at least three different positions on the roller body surface and the preset standard temperature, β * X * (Te-Tref) represents the up-regulation proportion of the ambient temperature compensation of the environment where the roller body is located, γ * Y represents the up-regulation proportion of the change rate of the average temperature of the detected temperatures at the at least three different positions on the roller body surface, α represents the weight coefficient of the average temperature of the roller body surface, β represents the weight coefficient of the heat conduction coefficient, γ represents the weight coefficient of the temperature change rate, Troll represents the average temperature of the detected temperatures at the at least three different positions on the roller body surface, Tset represents the preset standard temperature of the roller body surface, Te represents the actual ambient temperature of the environment where the roller body is located, Tref represents the preset standard ambient temperature of the environment where the roller body is located, X represents the heat conduction coefficient of the roller body, and Y represents the change rate of the average temperature of the detected temperatures at the at least three different positions on the roller body surface.

[0013] In some possible embodiments, the determination of whether the surface temperature of the roller body needs to be adjusted comprises:

[0014] When 80℃≤Troll<130℃, it is determined that the surface temperature of the roller body needs to be adjusted;

[0015] When 130℃≤Troll<170℃, it is determined that the surface temperature of the roller body does not need to be adjusted;

[0016] wherein Troll represents the average temperature of the detected temperatures at the at least three different positions on the roller body surface.

[0017] In some possible embodiments, the acquiring the detection temperatures at the at least three different positions on the surface of the roll body further comprises:

[0018] calculating a coefficient of variation CV of the detection temperatures at the at least three different positions on the surface of the roll body;

[0019] when the CV≥20%, the automatic alarm alarms.

[0020] According to a second aspect of the present application, a heating control device of a roll body is provided, comprising:

[0021] a roll body temperature detector, configured to acquire detection temperatures at at least three different positions on a surface of the roll body;

[0022] a controller, electrically connected with the roll body temperature detector, configured to determine whether the surface temperature of the roll body needs to be adjusted, and when the surface temperature of the roll body needs to be adjusted, to adjust an upward adjustment ratio of the power of the heater according to a temperature deviation between an average temperature of the detection temperatures at the at least three different positions on the roll body and a preset standard temperature, an ambient temperature compensation of an ambient environment where the roll body is located, and a change rate of the average temperature of the detection temperatures at the at least three different positions on the surface of the roll body.

[0023] In some possible embodiments, the device further comprises an ambient temperature detector, configured to detect an ambient temperature of the ambient environment where the roll body is located, and transmit the detected ambient temperature to the controller;

[0024] a temperature regulator, configured to receive the upward adjustment ratio of the power of the heater transmitted by the controller, and adjust the power of the heater.

[0025] In some possible embodiments, the temperature regulator is located inside the roll body, and the temperature regulator comprises a heating medium.

[0026] According to a third aspect of the present application, a computer device is provided, comprising:

[0027] a processor;

[0028] a memory for storing executable instructions of the processor;

[0029] wherein the processor is configured to execute the heating control method of the roll body.

[0030] According to a fourth aspect of the present application, a non-transitory computer readable storage medium is provided, when instructions in the storage medium are executed by a processor of a computer device, the computer device is enabled to execute the heating control method of the roll body.

[0031] The technical scheme provided by the embodiment of the present application can have the following beneficial effects: in the heating control method of the roller body provided by the embodiment of the present application, when the surface temperature of the roller body needs to be adjusted, the adjustment of the heater power is realized by adjusting the upward adjustment ratio of the heater power, so as to adjust the surface temperature of the roller body, and make the surface temperature of the roller body reach the standard temperature. The drying effect of the carbon fiber passing through the sizing agent is improved, the displacement of the carbon fiber tows wound on the surface of the roller body from the surface of the roller body is prevented, the apparent quality of the finished carbon fiber is improved, the production line stability during the preparation of the carbon fiber is not affected, and the automation degree of the carbon fiber production is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0032] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate the embodiments of the present application and, together with the description, serve to explain the principles of the embodiments of the present application. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present application, not all embodiments. For those skilled in the art, other drawings can be obtained from these drawings without creative labor.

[0033] Figure 1 Flowchart of the heating control method of the roller body of an exemplary embodiment of the present application;

[0034] Figure 2 Flowchart of step S2 of an exemplary embodiment of the present application.

[0035] Figure 3 Schematic diagram of the cooperation of the roller temperature detector, the environment temperature detector and the roller body in the heating control device of the roller body, and the schematic diagram of the winding of the carbon fiber tows on the roller body, shown by an exemplary embodiment of the present application.

[0036] Figure 4 Structure block diagram of the heating control device of the roller body, shown by an exemplary embodiment of the present application.

[0037] Figure 5 Block diagram of a computer device, shown according to an exemplary embodiment. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described clearly and completely in combination with the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other arbitrarily without conflict.

[0039] The exemplary embodiments of the present application provide a heating control method of a roller body, as shown in the figure, the control method comprises: Figures 1 to 2

[0040] Step S1: obtaining detection temperatures at at least three different positions on the surface of the roller body. The detection temperatures at the at least three different positions on the surface of the roller body are obtained in sequence from a first end to a second end of the roller body in the extension direction of the roller body, and the interval distance between two adjacent different positions is equal, which improves the accuracy of the obtained average temperature of the surface of the roller body. For example, the detection temperatures at three different positions on the surface of the roller body are obtained, and the three different positions can be obtained from the first end of the roller body, the second end of the roller body and the middle position of the roller body respectively, wherein the first end and the second end are two opposite ends in the extension direction of the roller body.

[0041] Step S2: judging whether the surface temperature of the roller body needs to be adjusted.

[0042] When the surface temperature of the roller body needs to be adjusted, step S3 is performed, and the up-regulation proportion of the heater power is adjusted according to the temperature deviation between the average temperature of the detection temperatures at the at least three different positions on the roller body and the preset standard temperature, the environmental temperature compensation of the environment where the roller body is located and the change rate of the average temperature of the detection temperatures at the at least three different positions on the surface of the roller body. The power of the heater is adjusted according to the up-regulation proportion, so as to more quickly increase the temperature of the surface of the roller body. When the surface temperature of the roller body does not need to be adjusted, the heater power is not adjusted, and the temperature of the surface of the roller body is maintained.

[0043] Here, the up-regulation proportion of the heater power = (the power of the heater after up-regulation-the power of the heater before up-regulation) ÷ the original power × 100%, that is, after obtaining the up-regulation proportion of the heater, the power of the heater can be adjusted according to the up-regulation proportion of the heater power.

[0044] For example, the power of the heater before up-regulation is defined as Q1, the power of the heater after up-regulation is defined as Q2, and the up-regulation proportion of the heater power is defined as a. When Q1 and a are known, Q2 = Q1(1+a)

[0045] Through the above steps S1 to S3, the heating control method of the roller body provided by the embodiments of the present application can realize the adjustment of the heater power by adjusting the up-regulation proportion of the heater power when the surface temperature of the roller body needs to be adjusted, so as to adjust the surface temperature of the roller body and make the surface temperature of the roller body reach the standard temperature. The drying effect of the carbon fiber after the sizing agent is improved, the displacement of the carbon fiber tows wound on the surface of the roller body and the surface quality of the finished carbon fiber are prevented, the production line stability during the preparation of the carbon fiber is not affected, and the automation degree of the carbon fiber production is effectively improved. ​

[0046] The step S3, when the surface temperature of the roller body needs to be adjusted, specifically comprises adjusting the increasing proportion of the heater power according to the temperature deviation between the average temperature of the detected temperatures at the at least three different positions on the surface of the roller body and the preset standard temperature, the environmental temperature compensation of the environment where the roller body is located, and the change rate of the average temperature of the detected temperatures at the at least three different positions on the surface of the roller body.

[0047] When the surface temperature needs to be adjusted, the increasing proportion of the heater power is adjusted according to the sum of the increasing proportion of the temperature deviation between the average temperature of the detected temperatures at the at least three different positions on the surface of the roller body and the preset standard temperature, the increasing proportion of the environmental temperature compensation of the environment where the roller body is located, and the increasing proportion of the change rate of the average temperature of the detected temperatures at the at least three different positions on the surface of the roller body. The method can accurately obtain the adjustment proportion of the heater power, and realize the adjustment of the heater power.

[0048] Specifically, the increasing proportion of the heater power is calculated by the following formula:

[0049]

[0050] Wherein, P represents the increasing proportion of the heater power, represents the increasing proportion of the temperature deviation between the average temperature of the detected temperatures at the at least three different positions on the surface of the roller body and the preset standard temperature, β * X * (Te-Tref) represents the increasing proportion of the environmental temperature compensation of the environment where the roller body is located, γ * Y represents the increasing proportion of the change rate of the average temperature of the detected temperatures at the at least three different positions on the surface of the roller body, α represents the weight coefficient of the average temperature of the roller surface, β represents the weight coefficient of the heat transfer coefficient, γ represents the weight coefficient of the temperature change rate, Troll represents the average temperature of the detected temperatures at the at least three different positions on the surface of the roller body, Tset represents the preset standard temperature of the roller surface, Te represents the actual environmental temperature of the environment where the roller body is located, Tref represents the preset standard environmental temperature of the environment where the roller body is located, X represents the heat transfer coefficient of the roller, and Y represents the change rate of the average temperature of the detected temperatures at the at least three different positions on the surface of the roller body.

[0051] Wherein, α is mainly used to measure the influence degree of the temperature deviation of the roller surface from the target temperature on the heater power, and the value of α is related to the temperature control accuracy requirement. If the sensitivity to the temperature deviation is high, α can take a larger value, and vice versa. The range of α can be 0.1-0.8, for example.

[0052] β reflects the influence of the difference between the ambient temperature and the reference temperature on the power through the heat transfer coefficient. Since the ambient temperature can be higher or lower than the reference temperature, β can be positive or negative. When the influence of the ambient temperature on the roll surface temperature is large, the absolute value of β can be appropriately increased. The range of β can be, for example, -0.5 to 0.5.

[0053] γ is used to reflect the effect of the temperature change rate on the power adjustment. Since the direction of the power adjustment is different when the temperature rises or falls at different rates, γ can be positive or negative. The faster the temperature change rate, the larger the absolute value of γ should be. The range of γ can be, for example, -0.5 to 0.5.

[0054] Taking a plain area as an example, when the ambient temperature is 25°C, the reference ambient temperature is set to 20°C, the roll surface target temperature is 180°C, the current measured roll surface temperature is 30°C, the temperature change rate is +5°C / min, and the heat transfer coefficient X is 1.2 (a conventional value in plain areas). The reference values of α, β, and γ are as follows:

[0055] α = 0.6: The response requirement to the temperature deviation is high in the equipment start-up stage, so α takes a large value to speed up the compensation speed of the temperature deviation.

[0056] β = 0.3: The ambient temperature (25°C) is higher than the reference temperature (20°C), at this time the ambient temperature has a certain promoting effect on the rise of the roll surface temperature, β takes a positive value, and the power up-regulation ratio is appropriately reduced.

[0057] γ = 0.4: The temperature change rate is positive and large, indicating that the temperature is rising rapidly, but the start-up stage needs to reach the target temperature faster, so γ takes a positive value to further increase the power output.

[0058] The total power up-regulation ratio P = 4.3, that is, an increase of 430%.

[0059] In this embodiment, through the weight coefficient of the average temperature of the roll body surface, the weight coefficient of the heat transfer coefficient, the weight coefficient of the temperature change rate, the average temperature of the detection temperatures at at least three different positions on the roll body surface, the preset standard temperature, the actual ambient temperature of the environment in which the roll body is located, the preset standard ambient temperature of the environment in which the roll body is located, the heat transfer coefficient of the roll body, and the change rate of the average temperature of the detection temperatures at at least three different positions on the roll body surface, the power up-regulation ratio of the heater can be obtained, and the adjustment of the power of the heater can be realized.

[0060] The value of the heat transfer coefficient X of the roll body is related to factors such as the material of the roll body, the heat conduction performance of the heating medium, and the air flow speed of the environment in which the roll body is located. The larger the heat transfer coefficient, the faster the heat transfer, and the more obvious the influence of the environment on the roll body surface temperature. Here, the inner cavity of the roll body has a temperature regulator for adjusting the roll body surface temperature, and the temperature regulator includes a heating medium.

[0061] When the shape of the roller body is cylindrical, the heat conduction coefficient X of the roller body is calculated by the following formula:

[0062] X = 2πL(Troll-Te)Q·ln(r2 / r1)

[0063] Wherein, L represents the length of the roller body in its extension direction, Troll represents the average temperature of the detected temperature at least three different positions on the surface of the roller body, Te represents the actual environment temperature of the environment where the roller body is located, r1 represents the radius of the cross section of the inner cavity of the roller body, r2 represents the radius of the cross section of the roller body, and Q represents the power of the heater before adjustment.

[0064] The change rate Y of the average temperature of the detected temperature at least three different positions on the surface of the roller body described above will be affected by the winding speed of the carbon fiber filament. The calculation method is that when the average temperature of the detected temperature at least three different positions on the surface of the roller body at t1 is Troll1, and the average temperature of the detected temperature at least three different positions on the surface of the roller body at t2 is Troll2, then the change rate Y of the average temperature is (Troll2-Troll1) / (t2-t1).

[0065] When the change rate Y of the average temperature becomes large, it indicates that the heat supply and demand of the heater is unbalanced, and the power of the heater needs to be adjusted in time. In practical application, temperature detectors can be used to monitor the temperature of at least three different positions on the surface of the roller body in real time, and the temperature detector can be a high-precision temperature sensor. Each position on the surface of the roller body needs to be detected corresponds to install a roller temperature detector, and the average temperature Troll of the surface of the roller body is calculated by the detected temperature of different positions on the surface of the roller body obtained by multiple temperature detectors. The average temperature of the surface of the roller body is the detected surface temperature of the roller body, for example, the value of the average temperature Troll of the surface of the roller body is recorded every 1 second.

[0066] In practical application, according to the actual environment temperature of the environment where the roller body is located, the average temperature of the surface of the roller body, the heat conduction coefficient of the roller body and the change rate of the average temperature of the detected temperature at least three different positions on the surface of the roller body, a series of experimental conditions can be designed, the actual adjustment of the output power of the heater and the corresponding parameter value are recorded under each condition, and the results are analyzed by statistical software to obtain the corresponding relationship between the actual adjustment parameter value of the output power of the heater and the working condition.

[0067] In a specific example, the step S2 of judging whether the surface temperature of the roller body needs to be adjusted includes:

[0068] Step S21: When 80℃≤Troll<130℃, it is determined that the surface temperature of the roller body needs to be adjusted.

[0069] Step S22: When 130℃≤Troll<170℃, it is determined that the surface temperature of the roller body does not need to be adjusted.

[0070] Wherein, Troll represents the average temperature of the detected temperatures at the at least three different positions on the surface of the roller body.

[0071] That is, when the average temperature of the surface of the roller body obtained is in the range that needs to be adjusted, the power of the heater is adjusted to adjust the surface temperature of the roller body, and when the average temperature of the surface of the roller body obtained is not in the range that needs to be adjusted, i.e. the power of the heater does not need to be adjusted, and the surface temperature of the roller body also does not need to be adjusted.

[0072] In actual application, in order to facilitate the transmission of signals, after the step S1 of obtaining the surface temperatures at the at least three different positions on the roller body, the method can further comprise:

[0073] The detected temperatures at the at least three different positions on the surface of the roller body are respectively converted into current values, and an average current value of the current values at the at least three different positions on the surface of the roller body is calculated. Here, the detected temperatures at the at least three different positions on the surface of the roller body obtained can be respectively converted into current values by a temperature transmitter, and the average current value can be used to determine whether the surface temperature of the roller body needs to be adjusted. The temperature transmitter converts the current in the range of 4mA to 20mA.

[0074] Specifically, when 4mA≤I<13mA, the surface temperature of the roller body needs to be adjusted.

[0075] When 13mA≤I<20mA, the surface temperature of the roller body does not need to be adjusted. Wherein, I represents the average current value.

[0076] Here, when 80℃≤Troll<130℃, the corresponding converted current value is in the range of 4mA≤I<13mA. When 130℃≤Troll<170℃, the corresponding converted current value is in the range of 13mA≤I<20mA.

[0077] In a specific embodiment, after the step S1 of obtaining the detected temperatures at the at least three different positions on the surface of the roller body, the method further comprises:

[0078] Step S11: calculating the coefficient of variation CV of the detected temperatures at the at least three different positions on the surface of the roller body;

[0079] Step S12, when CV≥20%, the automatic alarm alarms. When the automatic alarm alarms, it indicates that the heater has been unable to automatically adjust the temperature of the roller surface, at this time, the staff needs to intervene to process the roller surface temperature.

[0080] In summary, after obtaining the detection temperatures of the at least three different positions on the roller surface, there are three cases. The first is that when 80℃≤Troll<130℃, the surface temperature of the roller is adjusted. The second is that when 130℃≤Troll<170℃, the surface temperature of the roller is not adjusted. The third is that when CV≥20%, CV>170℃ and CV<80℃, the automatic alarm alarms, and the staff intervenes.

[0081] Next, taking the highland night state as an example, the corresponding values of Troll, Tset, Te, Tref, X, Y, α, β, γ are shown in Table 1.

[0082] Table 1

[0083] Symbol Value Tset 150℃ Troll 140℃ Te 10℃ Tref 20℃ X 0.8 Y -2°C / min α 0.5 β -0.3 γ -0.2

[0084] According to the data in the above table, the up-regulation proportion of the temperature deviation between the average temperature of the detection temperatures of the at least three different positions on the roller surface and the preset standard temperature is calculated:

[0085]

[0086] The up-regulation proportion of the environmental temperature compensation amount of the environment where the roller is located is calculated:

[0087] β*X*(Te-Tref)=-0.3*0.8*(10℃-20℃)=-0.24*(-10℃)=2.4

[0088] The up-regulation proportion of the change rate of the average temperature of the detection temperatures of the at least three different positions on the roller surface is calculated: γ*Y=-0.2*(-2)=0.4

[0089] The total power up-regulation proportion of the heater: P=0.0333+2.4+0.4=2.8333, that is, P≈283.33%.

[0090] The embodiment of the application also provides a heating control device of a roller, such as Figure 3 and Figure 4As shown, the roller 10 includes a roller temperature detector 2 for detecting temperatures at at least three different locations on the roller 10. The roller temperature detector 2 can be a high-precision temperature sensor in contact with the roller 10 surface, or a thermometer. The number of roller temperature detectors 2 is equal to the number of locations on the roller 10 where the detected temperatures are detected. That is, a roller temperature detector 2 is installed for each location on the roller 10 where the detected temperatures are to be detected. For example, when detecting temperatures at three different locations on the roller 10 surface, the three different locations can be detected at the first end of the roller 10, the second end of the roller 10, and the middle of the roller 10, respectively. In this case, a temperature detector is installed for each location on the roller 10 where the detected temperatures are to be detected.

[0091] The heating control device also includes a controller 1 electrically connected to the roller temperature detector 2, which is used to determine whether the surface temperature of the roller 10 needs to be adjusted. When the surface temperature of the roller 10 needs to be adjusted, the increase ratio of the heater power is adjusted according to the temperature deviation between the average temperature of the detected temperatures at at least three different positions on the roller 10 and the preset standard temperature, the ambient temperature compensation amount of the environment in which the roller 10 is located, and the rate of change of the average temperature of the detected temperatures at at least three different positions on the surface of the roller 10.

[0092] In the roller heating control device provided in the embodiment of the present application, the roller temperature detector 2 can obtain the surface temperature of the roller 10 and transmit the surface temperature to the controller 1. The controller 1 controls the increase ratio of the heater power to adjust the heater power, thereby adjusting the surface temperature of the roller 10 to a standard temperature. This improves the drying effect of the carbon fiber after the sizing agent is applied, and can also prevent the carbon fiber tow 100 wrapped on the surface of the roller 10 from shifting from the surface of the roller 10, thereby improving the apparent quality of the finished carbon fiber. It does not affect the stability of the production line during carbon fiber preparation, effectively improving the degree of automation of carbon fiber production.

[0093] In one specific example, the heating control device further includes an ambient temperature detector 3 for detecting the ambient temperature of the environment surrounding the roller 10. The ambient temperature detector 3 transmits the detected ambient temperature to the controller 1. A temperature regulator 4 receives a signal from the controller 1 regarding the heater power increase ratio, and adjusts the heater power. The temperature regulator 4 receives control commands from the controller 1 and adjusts the heater power accordingly. The temperatures detected by the roller temperature detector 2 and the ambient temperature detector 3 are transmitted to the controller 1. The controller 1 adjusts the surface temperature of the roller 10 based on the received temperature values ​​from the roller temperature detector 2 and the ambient temperature detector 3, as well as a preset standard temperature value for the surface of the roller 10 and a preset standard ambient temperature of the environment surrounding the roller 10, which is preset by the controller 1.

[0094] In one embodiment, the temperature regulator 4 is located within the roller body 10 and includes a heating medium. The temperature regulator 4 can be a heating roller that regulates temperature electrically. Furthermore, the temperature regulator 4 includes an outer covering disposed within the inner cavity of the roller body 10. The outer covering is used to enclose the heating medium, and the material of the outer covering has high thermal conductivity.

[0095] In a specific example, the temperature regulator 4 is controlled to be turned on or off by the control switch 5. When the temperature of the surface of the roller body 10 needs to be adjusted, the controller 1 controls the control switch 5 to be turned on, and the temperature regulator 4 starts working, that is, adjusting the power of the heater to heat the roller body 10; when the temperature of the surface of the roller body 10 does not need to be adjusted, the controller 1 controls the control switch 5 to be turned off, and the temperature regulator 4 stops working, that is, stops heating the roller body 10.

[0096] The detailed heating control process of the heating control device for the roller body corresponds to step S2 and step S3 in the above-mentioned heating control method for the roller body, and the specific method will not be repeated here.

[0097] In a specific embodiment, the roller heating control device provided in the present application further includes an automatic alarm 6 electrically connected to the controller 1 .

[0098] After obtaining the detected temperatures at at least three different positions on the surface of the roller body 10, step S11 of the above roller heating control method is performed to calculate the coefficient of variation CV of the detected temperatures at at least three different positions on the surface of the roller body 10;

[0099] If CV is less than 20%, the automatic alarm 6 does not sound. Otherwise, step S12 is executed. If CV is greater than or equal to 20%, the automatic alarm 6 sounds. When the automatic alarm 6 sounds, it indicates that the heater is no longer able to automatically adjust the surface temperature of the roller 10. At this point, personnel intervention is required to adjust the surface temperature of the roller 10. The automatic alarm 6 may be an audible or visual alarm.

[0100] Figure 5 3 is a block diagram of a computer device 300 for a method for controlling the heating of a roller according to an exemplary embodiment. For example, the computer device 300 may be provided as a server. Figure 5 The computer device 300 includes a processor 301, which can be one or more processors as needed. The computer device 300 also includes a memory 302 for storing instructions executable by the processor 301, such as application programs. The memory can be one or more memory devices as needed. The memory can store one or more application programs. The processor 301 is configured to execute instructions to implement the roller heating control method described above.

[0101] Those skilled in the art will appreciate that embodiments of the present application can be readily used as a method, apparatus (device) or computer program product. Accordingly, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application can take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, volatile and non-volatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data) embodying computer readable instructions and / or computer program code. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Further, it should be appreciated that a communication medium can embody computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media.

[0102] The present application is described below with reference to flowchart illustrations and / or block diagrams of methods, apparatus (devices) and computer program products according to embodiments of the present application. It will be understood that each flow and / or block in the flowchart illustrations and / or block diagrams, and combinations of flows and / or blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart illustrations and / or block diagrams. Figure 1 Figure 1 The computer program instructions can also be loaded into a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart illustrations and / or block diagrams. Figure 1 Figure 1 The computer program instructions can also be loaded into a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart illustrations and / or block diagrams. Figure 1 Figure 1 The computer program instructions can also be loaded into a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart illustrations and / or block diagrams. ​​​

[0103] In this application, the terms "comprise", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element. Although preferred embodiments of the application have been described, one skilled in the art will be able to devise additional variations and modifications without departing from the spirit and scope of the application. Accordingly, the appended claims are intended to cover all such modifications and variations as falling within the scope of the application.

[0104] It is apparent that many modifications and variations of this application can be effected although only a few are specified and described herein. No limitation is intended by the details given above, which can include any additional modification and variation thereof as fall within the scope of the application. Accordingly, it is expressly intended that all such possibilities, modifications, and variations that fall within the scope of the application are to be included.

Claims

1. A roller heating control method, characterized in that: The control method includes: Acquiring detected temperatures at at least three different locations on the roller surface; Determining whether the surface temperature of the roller body needs to be adjusted; When the surface temperature of the roller body needs to be adjusted, the increase ratio of the heater power is adjusted according to the temperature deviation between the average temperature of the detected temperatures at at least three different positions on the roller body and the preset standard temperature, the ambient temperature compensation amount of the environment in which the roller body is located, and the change rate of the average temperature of the detected temperatures at at least three different positions on the surface of the roller body.

2. The roller heating control method according to claim 1, characterized in that: When the surface temperature of the roller body needs to be adjusted, adjusting the increase ratio of the heater power according to the temperature deviation between the average temperature of the detected temperatures at at least three different positions on the roller body surface and the preset standard temperature, the ambient temperature compensation amount of the environment in which the roller body is located, and the change rate of the average temperature of the detected temperatures at at least three different positions on the roller body surface includes: When the surface temperature needs to be adjusted, the increase ratio of the heater power is adjusted according to the sum of the increase ratio of the temperature deviation between the average temperature of the detected temperatures at at least three different positions on the surface of the roller body and the preset standard temperature, the increase ratio of the ambient temperature compensation amount of the environment in which the roller body is located, and the increase ratio of the change rate of the average temperature of the detected temperatures at at least three different positions on the surface of the roller body.

3. The roller heating control method according to claim 2, characterized in that: The heater power increase ratio is calculated using the following formula: Among them, P represents the power increase ratio of the heater, represents the upward adjustment ratio of the temperature deviation between the average temperature of the detected temperatures at at least three different positions on the surface of the roller and the preset standard temperature, β*X*(Te-Tref) represents the upward adjustment ratio of the ambient temperature compensation amount of the environment in which the roller is located, γ*Y represents the upward adjustment ratio of the rate of change of the average temperature of the detected temperatures at at least three different positions on the surface of the roller, α represents the weight coefficient of the average temperature of the roller surface, β represents the weight coefficient of the thermal conductivity coefficient, γ represents the weight coefficient of the temperature change rate, Troll represents the average temperature of the detected temperatures at at least three different positions on the surface of the roller, Tset represents the preset standard temperature of the surface of the roller, Te represents the actual ambient temperature of the environment in which the roller is located, Tref represents the preset standard ambient temperature of the environment in which the roller is located, X represents the thermal conductivity coefficient of the roller, and Y represents the rate of change of the average temperature of the detected temperatures at at least three different positions on the surface of the roller.

4. The roller heating control method according to claim 2, characterized in that: The determining whether the surface temperature of the roller body needs to be adjusted includes: When 80°C ≤ Troll < 130°C, it is determined that the surface temperature of the roller needs to be adjusted; When 130°C ≤ Troll < 170°C, it is determined that the surface temperature of the roller does not need to be adjusted; Here, Troll represents the average temperature of the detected temperatures at at least three different positions on the surface of the roller.

5. The roller heating control method according to claim 1, characterized in that: After obtaining the detected temperatures at at least three different positions on the roller surface, the method further includes: Calculating the coefficient of variation (CV) of the detected temperatures at at least three different locations on the roller surface; When CV≥20%, the automatic alarm will sound.

6. A roller heating control device, characterized in that: include: A roller temperature detector is used to obtain the detected temperature at at least three different positions on the roller surface; A controller is electrically connected to the roller temperature detector and is used to determine whether the surface temperature of the roller needs to be adjusted. When the surface temperature of the roller needs to be adjusted, the increase ratio of the heater power is adjusted according to the temperature deviation between the average temperature of the detected temperatures at at least three different positions on the roller and the preset standard temperature, the ambient temperature compensation amount of the environment in which the roller is located, and the rate of change of the average temperature of the detected temperatures at at least three different positions on the roller surface.

7. The roller heating control device according to claim 6, characterized in that: The device further comprises: an ambient temperature detector for detecting the ambient temperature of the environment in which the roller is located, and transmitting the detected ambient temperature to the controller; The temperature regulator receives the increase ratio of the heater power transmitted by the controller and adjusts the power of the heater.

8. The roller heating control device according to claim 6, characterized in that: The temperature regulator is located inside the roller body, and the temperature regulator includes a heating medium.

9. A computer device, characterized in that: include: processor; a memory for storing executable instructions for the processor; The processor is configured to execute the roller heating control method according to any one of claims 1 to 5.

10. A non-transitory computer-readable storage medium, characterized in that When the instructions in the storage medium are executed by a processor of a computer device, the electronic device is enabled to execute the roller heating control method according to any one of claims 1 to 5.

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