Strip steel temperature regulation and control method and device and coating equipment

Abstract

The invention provides a strip steel temperature regulation and control method and device and coating equipment. The method comprises the steps that coating material information, the actual temperature of strip steel and the current temperature of a temperature adjusting roller are obtained; based on the coating material information and the actual temperature of the strip steel, the target temperature of the temperature adjusting roller is determined; determining first temperature difference information based on the current temperature of the temperature adjusting roller and the target temperature of the temperature adjusting roller; and based on the first temperature difference information, controlling the current temperature of the temperature-adjusting roller to approach the target temperature of the temperature-adjusting roller. The temperature of the coating roller can be automatically adjusted so that the temperature of the coating roller can reach the target temperature, then heat is conducted to the strip steel or absorbed, the surface temperature of the strip steel is adjusted to the temperature interval with the good coating material effect from the current temperature, and therefore the surface temperature of the strip steel is matched with the characteristics of the coating material, and the coating effect is improved. The temperature environment of the strip steel is relatively stable, so that the coating effect of the strip steel is improved, and the quality and performance of the strip steel are improved.

Description

Technical Field

[0001] The present invention relates to the field of automatic control technology, and in particular to a strip temperature control method, device and coating equipment. Background Art

[0002] At present, in the metallurgical cold rolling annealing process, the coating effect directly affects the quality and performance of the finished product. In the actual production process, due to the unstable temperature environment during the coating process, the surface temperature of the strip cannot meet the coating requirements, resulting in poor coating effect of the product, resulting in low quality and poor performance of the finished product, causing economic losses to the company. Summary of the invention

[0003] A strip temperature control method, device and coating equipment provided in the embodiments of the present application can make the surface temperature of the strip during the coating process adapt to the temperature requirements of the coating material, improve the stability of the ambient temperature, and further improve the coating effect of the product, thereby improving the quality and performance of the finished product and improving the economic benefits of the enterprise.

[0004] In the first aspect, the present application proposes a method for temperature control of a strip, comprising: obtaining coating material information, the actual temperature of the strip and the current temperature of a temperature control roller; determining a target temperature of the temperature control roller based on the coating material information and the actual temperature of the strip; determining first temperature difference information based on the current temperature of the temperature control roller and the target temperature of the temperature control roller; and controlling the current temperature of the temperature control roller to approach the target temperature of the temperature control roller based on the first temperature difference information.

[0005] In a feasible implementation manner, when the first temperature difference information is greater than a first preset threshold, the above method further includes: when the current temperature of the temperature control roller is higher than the target temperature of the temperature control roller, controlling the delivery of a cooling medium to the temperature control roller; when the current temperature of the temperature control roller is lower than the target temperature of the temperature control roller, controlling the delivery of a heating medium to the temperature control roller.

[0006] In a feasible implementation, the above method also includes: acquiring the current temperature of the working environment of the temperature control roller; determining the target temperature of the working environment of the temperature control roller based on the coating material information, the target temperature of the temperature control roller and the current temperature of the working environment of the temperature control roller; determining the second temperature difference information based on acquiring the current temperature of the working environment of the temperature control roller and the target temperature of the working environment of the temperature control roller; and based on the second temperature difference information, controlling the air curtain to start so that the current temperature of the working environment of the temperature control roller approaches the target temperature of the working environment of the temperature control roller.

[0007] In a feasible implementation, the above method also includes: when the second temperature difference information is greater than the second preset threshold value and the current temperature of the temperature regulating roller working environment is greater than the target temperature of the temperature regulating roller working environment, controlling the air curtain to deliver cold air to make the current temperature of the temperature regulating roller working environment approach the target temperature of the temperature regulating roller working environment; when the current temperature of the temperature regulating roller working environment is lower than the target temperature of the temperature regulating roller working environment, controlling the air curtain to deliver warm air to make the current temperature of the temperature regulating roller working environment approach the target temperature of the temperature regulating roller working environment.

[0008] In a feasible embodiment, the above method also includes: when the first temperature difference information is reduced to less than or equal to a third preset threshold, controlling the flow rate and flow velocity of the medium delivered to the temperature control roller to decrease, wherein the third preset threshold is less than the first preset threshold; and / or, when the second temperature difference information is reduced to less than or equal to a fourth preset threshold, controlling the air volume and wind speed of the air curtain to decrease, wherein the fourth preset threshold is less than the second preset threshold.

[0009] In a feasible embodiment, the above method also includes: obtaining the operating condition information of the coating roller; based on the operating condition information, controlling the flow rate of the heating medium or cooling medium delivered to the temperature control roller to increase or decrease; and / or controlling the flow rate of the heating medium or cooling medium delivered to the temperature control roller to increase or decrease.

[0010] In a feasible implementation, the above method further includes: obtaining temperature difference information between the upper and lower surfaces of the steel strip; determining first temperature difference correction information based on the temperature difference information between the upper and lower surfaces of the steel strip; and controlling the temperature control roller to approach the target temperature toward the correction temperature based on the first temperature difference correction information.

[0011] On the second aspect, the present application proposes a strip temperature control device, comprising: a temperature control roller, used to adjust the surface temperature of the strip; an air curtain, arranged around the temperature control roller, used to adjust the working environment temperature of the temperature control roller; a temperature control component, including a controller, the controller is used to implement the strip temperature control method as described in any of the above items, one end of the temperature control component is connected to the air curtain, and the other end is connected to the temperature control roller, which is used to adjust the air supply temperature of the air curtain and the working environment temperature of the temperature control roller.

[0012] In a third aspect, the present application proposes a coating device, comprising the strip temperature control device and a coating roller as described above.

[0013] In a fourth aspect, the present application proposes a storage medium on which program instructions are stored, and the program instructions are used to execute any of the above strip temperature control methods when running.

[0014] The present application proposes a strip temperature control method, including: obtaining coating material information, actual strip temperature and current temperature of a temperature regulating roller; determining a target temperature of the temperature regulating roller based on the coating material information and the actual strip temperature; determining first temperature difference information based on the current temperature of the temperature regulating roller and the target temperature of the temperature regulating roller; and controlling the current temperature of the temperature regulating roller to approach the target temperature of the temperature regulating roller based on the first temperature difference information. The present application can automatically adjust the temperature of the coating roller so that the coating roller temperature reaches the target temperature, and then conduct heat to the strip or absorb heat from the strip so that the surface temperature of the strip is adjusted from the current temperature to a temperature range where the coating material has a better effect, so that the surface temperature of the strip matches the characteristics of the coating material, and the temperature environment of the strip is relatively stable, thereby improving the coating effect of the strip and improving the quality and performance of the strip.

[0015] The strip temperature control method, device and coating equipment proposed in this application, and other advantages, objectives and features of this application will be reflected in part through the following description, and in part will also be understood by technical personnel in this field through research and practice of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the exemplary embodiments below. The accompanying drawings are only for the purpose of illustrating exemplary embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0017] Figure 1 A schematic diagram of a process for controlling the temperature of a steel strip provided in an embodiment of the present application;

[0018] Figure 2 A structural schematic diagram of a strip temperature control device provided in an embodiment of the present application;

[0019] Figure 3 A structural schematic diagram of another strip temperature control device provided in an embodiment of the present application;

[0020] Figure 4 A schematic diagram of the working state of a strip temperature control device provided in an embodiment of the present application;

[0021] Figure 5 A structural schematic diagram of a coating device provided in an embodiment of the present application.

[0022] in, Figures 2 to 4 The corresponding relationship between the reference numerals and the names of the components is as follows:

[0023] 10 steel strips; 20 coating equipment;

[0024] 200 strip temperature control device; 100 coating roller;

[0025] 210 temperature control roller; 220 air curtain; 230 temperature control component;

[0026] 221 a first air curtain unit, 222 a second air curtain unit, 223 a third air curtain unit;

[0027] 231 heating unit; 232 cooling unit. DETAILED DESCRIPTION

[0028] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0029] In this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements limited by the statement "comprise one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements. The term "more than two" includes two or more than two situations.

[0030] At present, in the metallurgical cold rolling annealing process, the coating effect directly affects the quality and performance of the finished product. In the actual production process, due to the unstable temperature environment during the coating process, the surface temperature of the strip cannot meet the coating requirements, resulting in poor coating effect of the product, resulting in low quality and poor performance of the finished product, causing economic losses to the company.

[0031] A strip temperature control method, device and coating equipment provided in the embodiments of the present application can make the surface temperature of the strip during the coating process adapt to the temperature requirements of the coating material, improve the stability of the ambient temperature, and further improve the coating effect of the product, thereby improving the quality and performance of the finished product and improving the economic benefits of the enterprise.

[0032] According to a first aspect of an embodiment of the present application, the present application proposes a method for controlling the temperature of a strip steel. Figure 1A schematic diagram of a process for controlling the temperature of a steel strip provided in an embodiment of the present application. Figure 1 As shown, the above method may include the following steps:

[0033] Step S110, obtaining coating material information, actual strip temperature and current temperature of the temperature control roller.

[0034] Exemplarily, the coating material information can be determined according to the production plan, and the actual temperature of the steel strip and the current temperature of the temperature-control roller can be measured by a thermometer, such as an infrared thermometer.

[0035] Step S120, determining the target temperature of the temperature-adjusting roller based on the coating material information and the actual temperature of the steel strip.

[0036] It should be noted that different coating materials correspond to different temperature ranges for optimal coating effects. Therefore, based on the coating material information and the actual temperature of the strip, the temperature range that the strip surface should reach when the coating effect is better can be determined. Based on the temperature range that the strip surface should reach, the target temperature of the temperature-regulating roller can be determined so that the strip surface temperature reaches the temperature range with better coating effect, thereby improving the strip coating effect.

[0037] Step S130: determining first temperature difference information based on the current temperature of the temperature control roller and the target temperature of the temperature control roller.

[0038] It should be noted that the first temperature difference information may be the temperature difference between the current temperature of the temperature regulating roller and the target temperature of the temperature regulating roller or the absolute value of the temperature difference between the current temperature of the temperature regulating roller and the target temperature of the temperature regulating roller, or may be the temperature difference range between the current temperature of the temperature regulating roller and the target temperature of the temperature regulating roller.

[0039] Step S140: Based on the first temperature difference information, the current temperature of the temperature regulating roller is controlled to approach the target temperature of the temperature regulating roller.

[0040] It should be noted that, based on the above-mentioned first temperature difference information, that is, the temperature difference between the current temperature of the above-mentioned temperature controlling roller and the target temperature of the above-mentioned temperature controlling roller, or the absolute value of the temperature difference between the current temperature of the above-mentioned temperature controlling roller and the target temperature of the above-mentioned temperature controlling roller, or the temperature difference range between the current temperature of the above-mentioned temperature controlling roller and the target temperature range of the temperature controlling roller, the temperature of the temperature controlling roller can be controlled to automatically increase or decrease from the current temperature to the target temperature.

[0041] The strip temperature control method proposed in the present application includes: obtaining coating material information, actual strip temperature and current temperature of the temperature regulating roller; determining the target temperature of the temperature regulating roller based on the coating material information and the actual strip temperature; determining the first temperature difference information based on the current temperature of the temperature regulating roller and the target temperature of the temperature regulating roller; and controlling the current temperature of the temperature regulating roller to approach the target temperature of the temperature regulating roller based on the first temperature difference information. The present application can automatically adjust the temperature of the coating roller so that the coating roller temperature reaches the target temperature, and then conduct heat to the strip or absorb heat from the strip so that the surface temperature of the strip is adjusted from the current temperature to a temperature range where the coating material has a better effect, so that the surface temperature of the strip matches the characteristics of the coating material, and the temperature environment of the strip is relatively stable, thereby improving the coating effect of the strip and improving the quality and performance of the strip.

[0042] When the first temperature difference information is greater than the first preset threshold, the above method also includes: when the current temperature of the temperature control roller is higher than the target temperature of the temperature control roller, controlling the delivery of a cooling medium to the temperature control roller; when the current temperature of the temperature control roller is lower than the target temperature of the temperature control roller, controlling the delivery of a heating medium to the temperature control roller.

[0043] For example, the first preset threshold may be determined by the enterprise based on actual experience accumulated during the production process, or may be determined based on the characteristics and type of the coating material. It should be noted that the first preset threshold may have different values ​​when the coating material is different.

[0044] It should be noted that the above-mentioned heating medium is used to increase the temperature of the above-mentioned temperature control roller, and the above-mentioned cooling medium is used to reduce the temperature of the above-mentioned temperature control roller. Exemplarily, the above-mentioned heating medium can be water. Specifically, water is heated electrically, and the water vapor generated can be used to increase the temperature of the temperature control roller. The above-mentioned cooling medium can be a refrigerant, such as a gas or a liquid. Specifically, a high-temperature and high-pressure gas can be obtained by pressurizing the refrigerant, and then the gas can be converted into a low-temperature and low-pressure liquid through a condenser, etc., and the liquid flows into the temperature control roller, which can reduce the temperature of the temperature control roller.

[0045] It should be noted that, when the absolute value of the temperature difference between the current temperature of the thermostatic roller and the target temperature of the thermostatic roller is greater than the first preset threshold value or the temperature difference between the current temperature of the thermostatic roller and the target temperature of the thermostatic roller exceeds the preset temperature difference range, if the current temperature of the thermostatic roller is higher than the target temperature of the thermostatic roller, the thermostatic roller needs to be controlled to be lowered, thereby controlling the conveyance of the cooling medium to the thermostatic roller. On the contrary, if the current temperature of the thermostatic roller is lower than the target temperature, the temperature of the thermostatic roller needs to be controlled to be increased, thereby controlling the conveyance of the heating medium to the thermostatic roller.

[0046] In a feasible implementation, it is also possible to determine whether it is necessary to control the delivery of a medium to the temperature control roller according to the current temperature of the steel strip and the temperature range to be reached by the steel strip. Specifically, when the surface temperature of the steel strip is lower than the smaller value of the above temperature range, the temperature control roller is controlled to deliver a heating medium. When the surface temperature of the steel strip is higher than the larger value of the above temperature range, the temperature control roller is controlled to deliver a cooling medium.

[0047] Based on this, the present application delivers a cooling medium to the temperature control roller when the first temperature difference information is greater than the first preset threshold and the current temperature of the temperature control roller is higher than the target temperature of the temperature control roller, and delivers a heating medium to the temperature control roller when the current temperature of the temperature control roller is lower than the target temperature of the temperature control roller. This can achieve the temperature of the temperature control roller by precisely controlling the conveying medium, and then indirectly controlling the surface temperature of the strip, so that the surface temperature of the strip is adapted to the performance of the coating material, thereby improving the coating effect and the surface quality of the strip.

[0048] It should be noted that the first temperature difference information can also be determined in real time, and when the first temperature difference information is less than or equal to the first preset threshold, the medium is stopped from being conveyed to the temperature control roller. In this way, the control accuracy of the medium conveying process can be improved, the energy consumption in the process of controlling the surface temperature of the strip steel can be reduced, and the enterprise cost can be reduced.

[0049] In a feasible implementation, the above method also includes: acquiring the current temperature of the working environment of the temperature control roller; determining the target temperature of the working environment of the temperature control roller based on the coating material information, the target temperature of the temperature control roller and the current temperature of the working environment of the temperature control roller; determining the second temperature difference information based on acquiring the current temperature of the working environment of the temperature control roller and the target temperature of the working environment of the temperature control roller; and based on the second temperature difference information, controlling the air curtain to start so that the current temperature of the working environment of the temperature control roller approaches the target temperature of the working environment of the temperature control roller.

[0050] Exemplarily, the working environment of the temperature regulating roller may be an environment within a preset radius of the temperature regulating roller centered on the temperature regulating roller. Specifically, the preset radius may be 3 m. The current temperature of the working environment of the temperature regulating roller may be measured by a temperature measuring device, such as a thermometer.

[0051] It should be noted that, by controlling the start of the air curtain based on the second temperature difference information, the current temperature of the working environment of the temperature regulating roller is made close to the target temperature of the working environment of the temperature regulating roller. On the one hand, the working environment temperature of the temperature regulating roller can be made relatively stable, preventing the temperature medium in the surrounding environment, such as air, from absorbing heat from the temperature regulating roller or transmitting heat to the temperature regulating roller, thereby further improving the temperature control accuracy of the temperature regulating roller. On the other hand, the temperature medium in the surrounding environment can be reduced, absorbing heat from the strip or transmitting heat to the strip, thereby further improving the surface temperature control accuracy of the strip, thereby achieving the temperature of the temperature regulating roller being stably maintained at the target temperature of the temperature regulating roller, and the temperature of the strip being stably maintained in a temperature range with better coating effect, thereby improving the coating effect of the strip.

[0052] In a feasible implementation, the above method also includes: when the second temperature difference information is greater than the second preset threshold value and the current temperature of the temperature regulating roller working environment is greater than the target temperature of the temperature regulating roller working environment, controlling the air curtain to deliver cold air to make the current temperature of the temperature regulating roller working environment approach the target temperature of the temperature regulating roller working environment; when the current temperature of the temperature regulating roller working environment is lower than the target temperature of the temperature regulating roller working environment, controlling the air curtain to deliver warm air to make the current temperature of the temperature regulating roller working environment approach the target temperature of the temperature regulating roller working environment.

[0053] For example, the second preset threshold may be determined by the enterprise based on actual experience accumulated during the production process, or may be determined based on the material and size of the temperature control roller.

[0054] It should be noted that when the above-mentioned second temperature difference information is greater than the second preset threshold, it is necessary to quickly adjust the current temperature of the working environment of the thermostatic roller so that the current temperature of the working environment of the thermostatic roller is close to the target temperature of the working environment of the thermostatic roller, thereby maintaining the temperature of the thermostatic roller in the target temperature range of the thermostatic roller. Specifically, when the current temperature of the working environment of the thermostatic roller is greater than the target temperature of the working environment of the thermostatic roller, the air supply temperature of the air curtain can be determined based on the second temperature difference information, and the air curtain can be controlled to deliver cold air so that the current temperature of the working environment of the thermostatic roller is close to the target temperature of the working environment of the thermostatic roller. When the current temperature of the working environment of the thermostatic roller is less than the target temperature of the working environment of the thermostatic roller, the air supply temperature of the air curtain can be determined based on the second temperature difference information, and the air curtain can be controlled to deliver warm air so that the current temperature of the working environment of the thermostatic roller is close to the target temperature of the working environment of the thermostatic roller.

[0055] The above method can accurately determine the air supply temperature of the air curtain based on the second temperature difference information, and accurately control the air curtain to deliver warm air or cold air to the temperature control roller, thereby maintaining the working environment temperature of the temperature control roller in a relatively stable temperature range, so that the temperature of the temperature control roller is stably maintained at the target temperature, thereby achieving the goal of maintaining the surface temperature of the strip stably in a temperature range with better coating effect, thereby improving the coating effect of the strip.

[0056] In a feasible embodiment, the above method also includes: when the first temperature difference information is reduced to less than or equal to a third preset threshold, controlling the flow rate and flow velocity of the medium delivered to the temperature control roller to decrease, wherein the third preset threshold is less than the first preset threshold; and / or, when the second temperature difference information is reduced to less than or equal to a fourth preset threshold, controlling the air volume and wind speed of the air curtain to decrease, wherein the fourth preset threshold is less than the second preset threshold.

[0057] For example, the third preset threshold may be determined based on the first preset threshold according to the actual experience accumulated by the enterprise in the production process, or according to the characteristics and types of the coating material. The fourth preset threshold may be determined based on the actual experience accumulated by the enterprise in the production process, or according to the material and size of the temperature control roller.

[0058] It should be noted that the first ratio can be determined based on the third preset threshold and the first preset threshold, wherein the first ratio is the ratio of the difference between the third preset threshold and the first preset threshold to the first preset threshold. Specifically, the medium flow rate is controlled to be reduced to the above first ratio compared to the current flow rate; the medium flow rate is controlled to be reduced to the above first ratio compared to the current flow rate.

[0059] It should be noted that, when the second temperature difference information is reduced to less than or equal to the fourth preset threshold, the second ratio can be determined based on the fourth preset threshold and the second preset threshold, wherein the second ratio is the ratio of the difference between the fourth preset threshold and the second preset threshold to the second preset threshold. Specifically, the air volume is controlled to be reduced to a ratio of the current air volume to the above second ratio; the wind speed is controlled to be reduced to a ratio of the current wind speed to the above second ratio.

[0060] Therefore, the above method can achieve precise control of the medium flow and flow rate based on the first temperature difference information and the third preset threshold, and precise control of the air volume and wind speed of the air curtain based on the second temperature difference information and the fourth preset threshold, thereby reducing energy consumption and costs while ensuring that the temperature control roller is maintained in the target temperature range.

[0061] In a feasible embodiment, the above method also includes: obtaining the operating condition information of the coating roller; based on the operating condition information, controlling the flow rate of the heating medium or cooling medium delivered to the temperature control roller to increase or decrease; and / or controlling the flow rate of the heating medium or cooling medium delivered to the temperature control roller to increase or decrease.

[0062] Exemplarily, the above working condition information may include: the real-time power of the coating roller, the production cycle of the coating roller, etc. Specifically, when the real-time power of the coating roller is high or the production cycle is low, the flow rate of the heating medium or cooling medium delivered to the temperature regulating roller is controlled to increase, and the flow rate of the heating medium or cooling medium delivered to the temperature regulating roller is controlled to increase. When the real-time power of the coating roller is low or the production cycle is high, the flow rate of the heating medium or cooling medium delivered to the temperature regulating roller is controlled to decrease, and the flow rate of the heating medium or cooling medium delivered to the temperature regulating roller is controlled to decrease.

[0063] Therefore, the above method, by controlling the flow rate and flow velocity of the medium based on the working condition information of the coating roller, can improve the coating effect of the strip while improving the matching of the production efficiency of the coating process and the temperature control rate of the temperature control roller, thereby reducing the energy consumption of the coating process.

[0064] In a feasible implementation, the above method further includes: obtaining temperature difference information between the upper and lower surfaces of the steel strip; determining first temperature difference correction information based on the temperature difference information between the upper and lower surfaces of the steel strip; and controlling the temperature control roller to approach the target temperature toward the correction temperature based on the first temperature difference correction information.

[0065] It should be noted that, in a feasible implementation manner, the temperature regulating rollers can be respectively arranged on the upper and lower surfaces of the steel strip to accurately improve the coating effect on the upper and lower surfaces of the steel strip.

[0066] For example, the temperature of the upper and lower surfaces of the steel strip can be measured by a thermometer, and then the temperature of the upper and lower surfaces of the steel strip can be obtained by subtracting the temperature of the upper and lower surfaces of the steel strip. It should be noted that the value of the first temperature difference correction information is greater than or equal to the value of the temperature difference information of the upper and lower surfaces of the steel strip.

[0067] Exemplarily, when the temperature difference information between the upper and lower surfaces of the steel strip is greater than the preset temperature difference, the upper surface temperature control roller of the steel strip and the lower surface temperature control roller of the steel strip can be controlled to move from the target temperature to the correction temperature based on the actual temperature difference information between the upper and lower surfaces of the steel strip. The preset temperature difference can be determined based on the quality requirements of the steel strip, the coating material and the actual production experience, and the correction temperature is determined based on the target temperature and the first temperature difference correction information.

[0068] It should be noted that, when the upper surface temperature of the strip is lower than the lower surface temperature of the strip, the target temperature of the upper surface temperature-control roller of the strip is greater than the target temperature of the lower surface temperature-control roller of the strip. Specifically, after the upper and lower surface temperature-control rollers of the strip are controlled to be close to the target temperature together, the temperature of the upper surface temperature-control roller of the strip is controlled to continue to increase to a temperature higher than the temperature of the lower surface temperature-control roller of the strip, wherein the temperature of the upper surface temperature-control roller of the strip is increased to a temperature difference with the lower surface temperature-control roller of the strip greater than or equal to the temperature difference between the upper and lower surfaces of the strip.

[0069] Therefore, the above method corrects the target temperature of the temperature control roller based on the temperature difference information between the upper and lower surfaces of the strip, and can control the temperature difference between the upper and lower surfaces of the strip to narrow the preset temperature difference range based on the first temperature difference correction information, thereby improving the coating effect on the upper and lower surfaces of the strip, reducing the difference in coating effect on the upper and lower surfaces of the strip, and thereby improving the quality and performance of the finished product.

[0070] According to a second aspect of the present application, the present application provides a strip temperature control device. Figure 2-3 A structural schematic diagram of a strip temperature control device provided in an embodiment of the present application. Figure 4 The schematic diagram of the working state of a strip temperature control device provided in the embodiment of the present application is shown in the figure. As shown in the figure, the strip temperature control device 200 may include: a temperature control roller 210, an air curtain 220 and a temperature control component 230.

[0071] The temperature regulating roller 210 is used to adjust the surface temperature of the strip.

[0072] The air curtain 220 is disposed around the temperature regulating roller 210 and is used to adjust the working environment temperature of the temperature regulating roller 210 .

[0073] The temperature control component 230 includes a controller, which is used to implement the strip temperature control method as described in any of the above items. One end of the temperature control component is connected to the wind curtain 220, and the other end is connected to the temperature control roller 210, which is used to adjust the air supply temperature of the wind curtain 220 and the working environment temperature of the temperature control roller 210.

[0074] In a feasible embodiment, the interior of the above-mentioned temperature control roller 210 is a double-layer structure, and a rotating cavity is formed inside the temperature control roller 210. The medium flows into the temperature control roller 210 from one end, passes through the rotating cavity inside the temperature control roller 210, and flows out from the other end, so as to increase the moving path of the medium inside the temperature control roller 210, realize slow temperature control of the temperature control roller 210, and prevent the temperature of the temperature control roller 210 from suddenly increasing or decreasing, thereby causing damage to the strip.

[0075] In a feasible implementation, the air curtain 220 can be arranged at the top of the working area of ​​the coating roller 100, and is used to deliver warm air or cold air to the coating roller 100 to adjust the working environment temperature of the coating roller. Specifically, the air curtain 220 can be provided with a plurality of air curtain 220 units according to actual production needs. For example, three air curtain 220 units can be provided, specifically the first air curtain unit 221, the second air curtain unit 222 and the third air curtain unit 223, so as to achieve multi-angle adjustment of the working environment temperature of the temperature regulating roller 210.

[0076] Optionally, the air curtain 220 may be provided with heat exchange fins.

[0077] The air curtain 220 can also be used to adjust the working environment temperature of the coating roller.

[0078] In a feasible implementation manner, the air supply angle of the air curtain 220 is adjustable.

[0079] In a feasible implementation, the temperature control component 230 may include a heating unit 231 and a cooling unit 232. The heating unit 231 is used to deliver a heating medium to the temperature control roller 210, and the cooling unit 232 is used to deliver a cooling medium to the temperature control roller 210.

[0080] Optionally, the temperature increasing unit 231 may also be used to deliver a temperature increasing medium to the air curtain 220 . The temperature decreasing unit 232 may also be used to deliver a temperature decreasing medium to the air curtain 220 .

[0081] It should be noted that the temperature raising unit 231 controls the temperature of the medium by electrically heating the medium. When the temperature raising medium is water vapor, the temperature raising unit 231 may also be provided with a hot water circulation pump group, which can supply heated circulating water to the temperature regulating roller 210 and the air curtain 220, so as to realize the self-circulation heating and recycling heating functions, thereby realizing that there is no need to continuously replenish the cooling medium.

[0082] The cooling unit 232 is provided with a compressor for cooling the medium. Optionally, the cooling unit 232 may be provided with a cold water circulation pump group, which can supply the cooling circulation water to the temperature regulating roller 210 and the air curtain 220, so as to realize the self-circulation cooling and recycling circulation cooling functions, thereby realizing that there is no need to continuously replenish the cooling medium.

[0083] It should be noted that a plurality of valve bodies may be provided in the temperature control component 230 , which are respectively used to control the input of the medium into the temperature increasing unit 231 or the temperature decreasing unit 232 .

[0084] Optionally, a plurality of valve bodies may be provided in the temperature control assembly 230 and the temperature control roller 210 to control the input of the heating medium or the cooling medium into the temperature control roller 210 .

[0085] According to a third aspect of the present application, the present application provides a coating device. Figure 5 A structural schematic diagram of a coating device 20 is provided for an embodiment of the present application. Figure 5 As shown, the coating apparatus 20 may include the strip temperature control device 200 and the coating roller 100 as described above.

[0086] It should be noted that the coating roller 100 is used to coat the steel strip.

[0087] In a feasible implementation manner, the strip temperature control device 200 may be disposed at the entrance of the coating roller 100 to adjust the surface temperature of the strip 10 before coating.

[0088] The coating rollers 100 may be arranged above and below the steel strip 10 . The two coating rollers 100 are used to tighten the steel strip 10 , thereby coating the upper and lower surfaces of the steel strip 10 .

[0089] According to a fourth aspect of the present application, the present application further provides a storage medium on which program instructions are stored, and the program instructions are used to execute the environmental emission index analysis and control method of any one of the first aspects when running. The storage medium may include, for example, a storage component of a tablet computer, a hard disk of a computer, a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a portable compact disk read-only memory (CD-ROM), a USB memory, or any combination of the above storage media. The computer-readable storage medium may be any combination of one or more computer-readable storage media.

[0090] A person skilled in the art can understand the specific details and beneficial effects of the strip temperature control device and the coating equipment by reading the above description of the strip temperature control method, which will not be repeated here for the sake of brevity.

[0091] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0092] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

[0093] Although the preferred embodiments of this specification have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of this specification.

[0094] Obviously, those skilled in the art can make various changes and modifications to this specification without departing from the spirit and scope of this specification. Thus, if these modifications and variations of this specification fall within the scope of the claims of this specification and their equivalents, this specification is also intended to include these modifications and variations.

Claims

1. A method for controlling the temperature of a strip steel, It is characterized in that include: Obtain coating material information, actual strip temperature and current temperature of the temperature-regulating roller; Determining a target temperature of a temperature-regulating roller based on the coating material information and the actual temperature of the steel strip; Determining first temperature difference information based on the current temperature of the temperature control roller and the target temperature of the temperature control roller; Based on the first temperature difference information, the current temperature of the temperature regulating roller is controlled to approach the target temperature of the temperature regulating roller.

2. The strip temperature control method according to claim 1, It is characterized in that When the first temperature difference information is greater than a first preset threshold, the method further includes: When the current temperature of the temperature regulating roller is higher than the target temperature of the temperature regulating roller, controlling the delivery of a cooling medium to the temperature regulating roller; When the current temperature of the temperature regulating roller is lower than the target temperature of the temperature regulating roller, control is performed to supply a temperature increasing medium to the temperature regulating roller.

3. The strip temperature control method according to claim 2, It is characterized in that Also includes: Get the current temperature of the working environment of the temperature-regulating roller; Determining a target temperature of the working environment of the temperature regulating roller based on the coating material information, the target temperature of the temperature regulating roller and the current temperature of the working environment of the temperature regulating roller; Determining second temperature difference information based on the current temperature of the working environment of the temperature regulating roller and the target temperature of the working environment of the temperature regulating roller; Based on the second temperature difference information, the air curtain is controlled to start so that the current temperature of the working environment of the temperature regulating roller approaches the target temperature of the working environment of the temperature regulating roller.

4. The strip temperature control method according to claim 3, It is characterized in that Also includes: When the second temperature difference information is greater than a second preset threshold value and the current temperature of the working environment of the temperature regulating roller is greater than the target temperature of the working environment of the temperature regulating roller, the air curtain is controlled to deliver cold air so that the current temperature of the working environment of the temperature regulating roller approaches the target temperature of the working environment of the temperature regulating roller; When the current temperature of the working environment of the temperature regulating roller is lower than the target temperature of the working environment of the temperature regulating roller, the air curtain is controlled to deliver warm air so that the current temperature of the working environment of the temperature regulating roller approaches the target temperature of the working environment of the temperature regulating roller.

5. The strip temperature control method according to claim 4, It is characterized in that Also includes: When the first temperature difference information is reduced to be less than or equal to a third preset threshold, controlling the flow rate and flow velocity of the medium transported to the temperature regulating roller to decrease, wherein the third preset threshold is less than the first preset threshold; And / or, when the second temperature difference information is reduced to be less than or equal to a fourth preset threshold, the air volume and wind speed of the air curtain are controlled to decrease, wherein the fourth preset threshold is less than the second preset threshold.

6. The method for controlling the temperature of a steel strip according to any one of claims 1 to 5, It is characterized in that Also includes: Obtain working condition information of the coating roller; Based on the working condition information, controlling the flow rate of the heating medium or the cooling medium delivered to the temperature regulating roller to increase or decrease; And / or, controlling the flow rate of the heating medium or cooling medium delivered to the temperature regulating roller to increase or decrease.

7. The method for controlling the temperature of a steel strip according to claim 6, It is characterized in that Also includes: Obtain temperature difference information between the upper and lower surfaces of the strip; Determining first temperature difference correction information based on the temperature difference information between the upper and lower surfaces of the steel strip; Based on the first temperature difference correction information, the temperature regulating roller is controlled to approach from the target temperature to the correction temperature.

8. A strip temperature control device, It is characterized in that include: Temperature-control rollers are used to adjust the surface temperature of the strip; An air curtain, arranged around the temperature regulating roller, for regulating the working environment temperature of the temperature regulating roller; A temperature control component, comprising a controller, wherein the controller is used to implement the strip temperature control method as described in any one of claims 1 to 7, wherein one end of the temperature control component is connected to the air curtain, and the other end is connected to the temperature control roller, and is used to adjust the air supply temperature of the air curtain and the working environment temperature of the temperature control roller.

9. A coating device, It is characterized in that It comprises the strip temperature control device and the coating roller as claimed in claim 8.

10. A storage medium having program instructions stored thereon, It is characterized in that The program instructions are used to execute the strip temperature control method according to any one of claims 1 to 7 when running.

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