Automatic coil cooling device for cooling of aluminum coils after annealing and control method

Abstract

The present application belongs to the technical field of aluminum processing production equipment, and relates to a coiled material automatic cooling device for cooling of aluminum coil after annealing and a control method. The method comprises: a control system acquires preset temperature threshold and fan speed parameters; a coiled material in-place detection device detects aluminum coil on a cooling station in real time; if there is aluminum coil on the cooling station, a temperature measuring device detects the core temperature of the aluminum coil in real time; during operation of a cooling fan, the temperature measuring device continuously detects the core temperature of the aluminum coil, the control system automatically adjusts the fan speed according to the difference between the core temperature of the aluminum coil and the preset temperature, and the core temperature of the aluminum coil is less than or equal to the preset temperature. The present application greatly improves the cooling efficiency, effectively reduces the on-site metal occupancy, avoids the invalid idling of the fan, realizes the full-automatic control of the cooling process, avoids the waste of electric energy or excessive cooling caused by forgetting to stop, and ensures the product quality of the aluminum coil.

Description

Technical Field

[0001] This invention belongs to the technical field of aluminum processing production equipment, specifically relating to an automatic cooling device and control method for aluminum coils after annealing. Background Technology

[0002] In the casting and rolling process for producing aluminum foil blanks, high-temperature annealing in an annealing furnace is an essential step. The purpose is to eliminate internal stresses generated during rolling and improve the material's microstructure and processing properties. After annealing, the aluminum coils are at extremely high temperatures and must be cooled before proceeding to the next rolling stage or being moved to a warehouse.

[0003] Currently, the aluminum processing industry commonly uses indoor natural cooling to cool annealed aluminum coils, which involves placing the high-temperature aluminum coils directly in the cooling area of ​​the workshop and relying on natural air convection for heat dissipation. This traditional cooling method has several significant drawbacks: (1) The cooling time is too long, which greatly prolongs the entire production cycle and slows down the turnover of aluminum coils, seriously affecting production efficiency. Especially when production tasks are tight, the cooling process often becomes a bottleneck that restricts the increase in production capacity. (2) Due to the long cooling cycle, a large number of aluminum coils need to be piled up in the cooling area to wait for cooling. This not only occupies valuable workshop space resources, but also requires a large number of tooling and equipment to store and transport these work-in-process products. A large amount of funds are tied up in work-in-process products, which increases the company's production costs and operational risks. (3) High-temperature aluminum coils dissipate heat to the surrounding environment without control. A large amount of heat energy is directly discharged into the workshop air and cannot be effectively recovered and utilized. At the same time, the natural cooling process lacks effective monitoring methods. After the aluminum coils are cooled, they are often not detected and transferred in time, resulting in the aluminum coils staying in the cooling area for too long, which further reduces production efficiency. (4) In order to shorten the cooling time, some enterprises have adopted the method of setting up cooling fans in the cooling area and controlling the start and stop manually. This requires manual inspection and measurement of aluminum coil temperature, which is labor-intensive and poses a great safety hazard to personnel in high-temperature environments. Secondly, the timeliness and accuracy of manual control are difficult to guarantee, which may lead to the fan not starting in time, resulting in a longer cooling time, or the fan not shutting down in time, resulting in energy waste. In addition, manual control cannot adjust the fan speed according to the actual temperature of the aluminum coil and can only run at a fixed speed, resulting in low energy utilization efficiency.

[0004] Therefore, there is an urgent need to develop an aluminum coil cooling device that can improve cooling efficiency, shorten the turnover cycle, and simultaneously achieve energy saving, consumption reduction, and automated control, in order to solve the problems existing in the current technology. Summary of the Invention

[0005] To address the aforementioned technical problems, the present invention provides a solution. The present invention provides an automatic cooling device and control method for aluminum coils after annealing.

[0006] In a first aspect, the present invention provides an automatic cooling device for aluminum coils after annealing, comprising: At least one cooling station for placing aluminum coils to be cooled; At least one cooling fan is placed on one side of the cooling station, with the air outlet of the cooling fan aimed at the aluminum coil placed on the cooling station, for ventilation and cooling of the aluminum coil. The temperature measuring device is installed on the side of the cooling station to detect the core temperature of the aluminum coil placed on the cooling station in real time and output a temperature detection signal. The coil in-situ detection device is installed around the cooling station to identify whether there are aluminum coils in the cooling station. The control system is electrically connected to the temperature measuring device, the roll material in-situ detection device, and the drive motor of the cooling fan, respectively. It is used to receive the temperature detection signal from the temperature measuring device and the in-situ detection signal from the roll material in-situ detection device, and to control the start and stop of the cooling fan and the fan speed parameters according to the temperature detection signal and the in-situ detection signal.

[0007] Secondly, the present invention provides an automatic cooling control method for aluminum coils based on an automatic cooling device for cooling aluminum coils after annealing, comprising: During system initialization, the control system acquires preset temperature thresholds and fan speed parameters; The coil in-situ detection device monitors the aluminum coils on the cooling station in real time and sends the in-situ detection signal to the control system. If there is no aluminum coil at the cooling station, the control system controls the cooling fan to remain stopped and returns to the coil in-situ detection device for real-time detection; if there is an aluminum coil at the cooling station, the temperature measuring device detects the core temperature of the aluminum coil in real-time and sends the temperature detection signal to the control system. The control system determines whether the core temperature of the aluminum coil is greater than the first set temperature; if so, it starts the cooling fan; otherwise, it controls the cooling fan to remain stopped and returns to the coil in-situ detection device for real-time monitoring. During the operation of the cooling fan, the temperature measuring device continuously monitors the core temperature of the aluminum coil. The control system automatically adjusts the fan speed according to the difference between the core temperature of the aluminum coil and the preset temperature, until the core temperature of the aluminum coil is less than or equal to the preset temperature, at which point the cooling fan stops operating.

[0008] In some optional embodiments, the control system controls the start and stop of the cooling fan based on temperature detection signals and presence detection signals, including: When the coil in-situ detection device detects an aluminum coil at the cooling station and the temperature of the aluminum coil core measured by the temperature measuring device is greater than the first set temperature, the control system starts the cooling fan. When the temperature of the aluminum coil core measured by the temperature measuring device is less than or equal to the first set temperature, the control system automatically stops the cooling fan. When the coil in-situ detection device detects that there is no aluminum coil at the cooling station, the control system controls the cooling fan to remain stopped.

[0009] In some optional embodiments, the cooling fan is an axial flow fan; the drive motor of the axial flow fan is a variable frequency motor; the control system is connected to a frequency converter; the control system is electrically connected to the variable frequency motor through the frequency converter, and is used to adjust the speed of the axial flow fan according to the difference between the temperature of the aluminum coil core and a preset temperature threshold, so as to perform stepless adjustment of the air volume.

[0010] In some optional embodiments, when the core temperature of the aluminum coil is greater than the second set temperature, the control system controls the axial flow fan to operate at the rated speed; when the core temperature of the aluminum coil is between the third set temperature and the second set temperature, the control system controls the axial flow fan to operate at the first set ratio range of the rated speed; when the core temperature of the aluminum coil is between the fourth set temperature and the fifth set temperature, the control system controls the axial flow fan to operate at the second set ratio range of the rated speed.

[0011] In some optional embodiments, the temperature measuring device is an infrared temperature sensor; the probe of the infrared temperature sensor is aligned with the core end face of the aluminum coil; all infrared temperature sensors are evenly distributed along the circumferential direction of the core end face of the aluminum coil; the control system receives the temperature detection signals of each infrared temperature sensor and calculates the average value, and uses the average value of the core temperature of the aluminum coil as the output value of the core temperature of the aluminum coil.

[0012] In some optional embodiments, the control system further includes a timer for recording the continuous operating time of the cooling fan; when the continuous operating time of the cooling fan exceeds the preset maximum operating time, and the temperature of the aluminum coil core measured by the temperature measuring device is still greater than the first set temperature, the control system issues an alarm signal.

[0013] In some optional embodiments, the coil presence detection device is a photoelectric sensor; the transmitter and receiver of the photoelectric sensor are respectively installed on both sides of the cooling station. When there is an aluminum coil on the cooling station, the aluminum coil blocks the light path of the photoelectric sensor, and the photoelectric sensor sends a presence signal to the control system.

[0014] In some alternative embodiments, the cooling station includes a base and two parallel support rollers disposed on the base; the two support rollers are used to support the outer circumferential surface of the aluminum coil, allowing the aluminum coil to rotate freely on the support rollers.

[0015] In some optional embodiments, an air guide shroud is also included; the air guide shroud is installed at the air outlet of the cooling fan, the air outlet of the air guide shroud is funnel-shaped, and the air outlet area of ​​the air guide shroud is larger than the air outlet area of ​​the cooling fan, so as to expand the coverage of the cooling air.

[0016] The beneficial effects of this invention are: (1) The present invention adopts a forced ventilation cooling method, which blows cold air to the surface of aluminum coils through a cooling fan, which greatly improves the heat dissipation speed and cooling efficiency, effectively solves the bottleneck problem of cooling process restricting capacity improvement, and is conducive to greatly improving production flow efficiency. (2) Due to the significantly shortened cooling cycle, the aluminum coils stay in the cooling zone for a significantly reduced time, and more batches of aluminum coils can be circulated in the same site, effectively reducing the amount of metal occupied on site; (3) The cooling fan only runs when there are aluminum coils in the cooling station and the temperature is higher than the set temperature, which avoids the ineffective idling of the fan and greatly reduces the company's electricity costs. (4) This device realizes fully automated control of the cooling process, eliminating the need for manual inspection and operation, reducing the labor intensity of operators, avoiding the threat to personnel safety caused by working in high-temperature environments, and at the same time, the system can automatically identify the cooling completion status of aluminum coils and stop the machine in time, avoiding energy waste or over-cooling caused by forgetting to stop the machine. (5) The present invention adopts a forced air cooling method, which enables all parts of the aluminum coil to be cooled evenly, avoiding local overheating or slow cooling rate affecting the material's microstructure and properties. At the same time, the cooling rate of the aluminum coil can be controlled by adjusting the fan speed parameter, preventing internal stress from being generated by rapid cooling, and ensuring the product quality of the aluminum coil. Attached Figure Description

[0017] Figure 1 This is a system block diagram of an automatic cooling device for cooling aluminum coils after annealing, provided in Embodiment 1 of the present invention. Figure 2 This is a flowchart illustrating a specific implementation of the automatic cooling control method for roll materials provided in Example 2; Figure 3 This is a flowchart illustrating a specific implementation of the automatic cooling control method for roll materials provided in Example 3. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Example 1 As an example, in order to solve the problems existing in the prior art, this embodiment provides an automatic cooling device for cooling aluminum coils after annealing.

[0020] The implementation details of the method in this embodiment are described below. The following content is only for the convenience of understanding and is not necessary for implementing this solution.

[0021] As attached Figure 1 As shown, an automatic cooling device for aluminum coils after annealing includes: At least one cooling station for placing aluminum coils to be cooled; At least one cooling fan is placed on one side of the cooling station, with the air outlet of the cooling fan aimed at the aluminum coil placed on the cooling station, for ventilation and cooling of the aluminum coil. The temperature measuring device is installed on the side of the cooling station to detect the core temperature of the aluminum coil placed on the cooling station in real time and output a temperature detection signal. The coil in-situ detection device is installed around the cooling station to identify whether there are aluminum coils in the cooling station. The control system is electrically connected to the temperature measuring device, the roll material in-situ detection device, and the drive motor of the cooling fan, respectively. It is used to receive the temperature detection signal from the temperature measuring device and the in-situ detection signal from the roll material in-situ detection device, and to control the start and stop of the cooling fan and the fan speed parameters according to the temperature detection signal and the in-situ detection signal.

[0022] Specifically, in this embodiment, the control system uses a PLC controller to execute control instructions, and the PLC controller integrates a timer.

[0023] The working principle of this device is as follows: During system initialization, the control system acquires preset temperature thresholds and fan speed parameters; The coil in-situ detection device monitors the aluminum coils on the cooling station in real time and sends the in-situ detection signal to the control system. If there is no aluminum coil at the cooling station, the control system controls the cooling fan to remain stopped and returns to the coil in-situ detection device for real-time detection; if there is an aluminum coil at the cooling station, the temperature measuring device detects the core temperature of the aluminum coil in real-time and sends the temperature detection signal to the control system. The control system determines whether the core temperature of the aluminum coil is greater than the first set temperature; if so, it starts the cooling fan; otherwise, it controls the cooling fan to remain stopped and returns to the coil in-situ detection device for real-time monitoring. During the operation of the cooling fan, the temperature measuring device continuously monitors the core temperature of the aluminum coil. The control system automatically adjusts the fan speed according to the difference between the core temperature of the aluminum coil and the preset temperature, until the core temperature of the aluminum coil is less than or equal to the preset temperature, at which point the cooling fan stops operating.

[0024] In some optional embodiments, the control system controls the start and stop of the cooling fan based on temperature detection signals and presence detection signals, including: When the coil in-situ detection device detects an aluminum coil at the cooling station and the temperature of the aluminum coil core measured by the temperature measuring device is greater than the first set temperature, the control system starts the cooling fan. When the temperature of the aluminum coil core measured by the temperature measuring device is less than or equal to the first set temperature, the control system automatically stops the cooling fan. When the coil in-situ detection device detects that there is no aluminum coil at the cooling station, the control system controls the cooling fan to remain stopped.

[0025] In some optional embodiments, the cooling fan is an axial flow fan; the drive motor of the axial flow fan is a variable frequency motor; the control system is connected to a frequency converter; the control system is electrically connected to the variable frequency motor through the frequency converter, and is used to adjust the speed of the axial flow fan according to the difference between the temperature of the aluminum coil core and a preset temperature threshold, so as to perform stepless adjustment of the air volume.

[0026] The axial flow fan used in this embodiment has a rated power of 5.5kW, a rated speed of 1450r / min, and an air volume of 15000m³ / h. The axial flow fan is mounted on the rear side of the cooling station via a bracket, 1500mm away from the aluminum coil, with the air outlet aligned with the center of the coil. An air guide shroud is installed at the air outlet of the axial flow fan; the air outlet of the shroud is funnel-shaped with a diameter of 1200mm, enabling the cooling air to be evenly diffused across the entire surface of the aluminum coil.

[0027] In some optional embodiments, when the core temperature of the aluminum coil is greater than the second set temperature, the control system controls the axial flow fan to operate at the rated speed; when the core temperature of the aluminum coil is between the third set temperature and the second set temperature, the control system controls the axial flow fan to operate at the first set ratio range of the rated speed; when the core temperature of the aluminum coil is between the fourth set temperature and the fifth set temperature, the control system controls the axial flow fan to operate at the second set ratio range of the rated speed.

[0028] When the photoelectric sensor detects aluminum coils at the cooling station and the average core temperature of the aluminum coils measured by the infrared temperature sensor is greater than 50°C, the PLC controller starts the cooling fan via the frequency converter. When the average core temperature of the aluminum coils is less than or equal to 50°C, the PLC controller stops the cooling fan via the frequency converter. When the photoelectric sensor detects no aluminum coils at the cooling station, the PLC controller keeps the cooling fan stopped. When the core temperature of the aluminum coils is greater than 200°C, the cooling fan is controlled to run at the rated speed of 1450 r / min. When the core temperature of the aluminum coils is between 100°C and 200°C, the cooling fan is controlled to run at a speed of 1000 r / min. When the core temperature of the aluminum coils is between 50°C and 100°C, the cooling fan is controlled to run at a speed of 500 r / min.

[0029] In some optional embodiments, the temperature measuring device is an infrared temperature sensor; the probe of the infrared temperature sensor is aligned with the core end face of the aluminum coil; all infrared temperature sensors are evenly distributed along the circumferential direction of the core end face of the aluminum coil; the control system receives the temperature detection signals of each infrared temperature sensor and calculates the average value, and uses the average value of the core temperature of the aluminum coil as the output value of the core temperature of the aluminum coil.

[0030] The infrared temperature sensor has a temperature measurement range of 0℃ to 600℃ and an accuracy of ±1℃. Three infrared temperature sensors are installed at each cooling station, mounted on the front side of the station via brackets, evenly distributed along the circumference of the aluminum coil core end face. The probe is aligned with the core end face of the aluminum coil, at a distance of 500mm. The three infrared temperature sensors detect the temperature at different locations on the core end face of the aluminum coil. The control system receives the three detection signals and calculates the average value as the core temperature of the aluminum coil.

[0031] In some optional embodiments, the coil presence detection device is a photoelectric sensor; the transmitter and receiver of the photoelectric sensor are respectively installed on both sides of the cooling station. When there is an aluminum coil on the cooling station, the aluminum coil blocks the light path of the photoelectric sensor, and the photoelectric sensor sends a presence signal to the control system.

[0032] The photoelectric sensor has a detection range of 20m. The transmitter and receiver are installed on the left and right sides of the cooling station, respectively, at the same height as the center of the aluminum coil. When there is an aluminum coil on the cooling station, the aluminum coil blocks the optical path of the photoelectric sensor, and the photoelectric sensor sends a high-level signal to the control system. When there is no aluminum coil on the cooling station, the optical path is unobstructed, and the photoelectric sensor sends a low-level signal to the control system.

[0033] In some alternative embodiments, the cooling station includes a base and two parallel support rollers disposed on the base; the two support rollers are used to support the outer circumferential surface of the aluminum coil, allowing the aluminum coil to rotate freely on the support rollers.

[0034] In some optional embodiments, an air guide shroud is also included; the air guide shroud is installed at the air outlet of the cooling fan, the air outlet of the air guide shroud is funnel-shaped, and the air outlet area of ​​the air guide shroud is larger than the air outlet area of ​​the cooling fan, so as to expand the coverage of the cooling air.

[0035] This invention employs a forced ventilation cooling method, using a cooling fan to blow cold air onto the surface of the aluminum coil, significantly improving heat dissipation speed. Actual testing shows that the time required to cool an aluminum coil from 500°C to 50°C can be shortened from the traditional 48 hours of natural cooling to 18-24 hours, increasing cooling efficiency by over 50%. This effectively solves the bottleneck problem in the cooling process that restricts capacity expansion and significantly improves production efficiency.

[0036] Due to the significantly shortened cooling cycle, the aluminum coils spend less time in the cooling zone, allowing more batches of aluminum coils to be processed in the same area. This effectively reduces the amount of metal occupied on-site, frees up valuable workshop space and tooling resources, reduces the company's capital tied up, and lowers operating costs.

[0037] This invention employs automatic interlocking control technology, ensuring that the cooling fan only operates when aluminum coils are present at the cooling station and their temperature exceeds 50°C, thus preventing ineffective idling. Simultaneously, variable frequency speed control technology automatically adjusts the fan speed based on the actual temperature of the aluminum coils, achieving on-demand air supply. Calculations show that this method saves over 60% more energy compared to traditional continuously operating fans, significantly reducing the company's electricity costs.

[0038] This device achieves fully automated control of the cooling process, eliminating the need for manual inspection and operation, reducing the labor intensity of operators, and avoiding the threat to personnel safety posed by working in high-temperature environments. Simultaneously, the system can automatically identify the completion status of aluminum coil cooling and stop the machine in a timely manner, avoiding energy waste or over-cooling caused by forgetting to stop the machine.

[0039] Ensuring the cooling quality of aluminum coils: This invention employs a uniform forced air cooling method, combined with a rotatable cooling station design, ensuring uniform cooling of all parts of the aluminum coil and preventing localized overheating or excessively slow cooling rates from affecting the material's microstructure and properties. Simultaneously, the airflow adjustment function controls the cooling rate of the aluminum coil, preventing rapid cooling from generating internal stress and ensuring the product quality of the aluminum coil.

[0040] Example 2 Using the same principle as in Example 1, as shown in the attached... Figure 2 As shown, this embodiment provides an automatic cooling control method for aluminum coils based on an automatic cooling device for cooling after annealing, including steps 110-160.

[0041] Step 110: System initialization, control system obtains preset temperature threshold and fan speed parameters; Step 120: The coil in-situ detection device detects the aluminum coils on the cooling station in real time and sends the in-situ detection signal to the control system; Step 130: If there is no aluminum coil at the cooling station, the control system controls the cooling fan to remain stopped and returns to the coil in-situ detection device for real-time detection; if there is an aluminum coil at the cooling station, the temperature measuring device detects the core temperature of the aluminum coil in real-time and sends the temperature detection signal to the control system. Step 140: The control system determines whether the core temperature of the aluminum coil is greater than the first set temperature; if so, the cooling fan is started; otherwise, the cooling fan is kept stopped and the coil in-situ detection device is used for real-time detection. Step 150: During the operation of the cooling fan, the temperature measuring device continuously monitors the core temperature of the aluminum coil. The control system automatically adjusts the fan speed according to the difference between the core temperature of the aluminum coil and the preset temperature until the core temperature of the aluminum coil is less than or equal to the preset temperature, at which point the cooling fan stops operating.

[0042] Specifically, the control system controls the start and stop of the cooling fan based on temperature detection signals and presence detection signals, including: When the coil in-situ detection device detects an aluminum coil at the cooling station and the temperature of the aluminum coil core measured by the temperature measuring device is greater than the first set temperature, the control system starts the cooling fan. When the temperature of the aluminum coil core measured by the temperature measuring device is less than or equal to the first set temperature, the control system automatically stops the cooling fan. When the coil in-situ detection device detects that there is no aluminum coil at the cooling station, the control system controls the cooling fan to remain stopped.

[0043] In some optional embodiments, the cooling fan is an axial flow fan; the drive motor of the axial flow fan is a variable frequency motor; the control system is connected to a frequency converter; the control system is electrically connected to the variable frequency motor through the frequency converter, and is used to adjust the speed of the axial flow fan according to the difference between the temperature of the aluminum coil core and a preset temperature threshold, so as to perform stepless adjustment of the air volume.

[0044] In some optional embodiments, when the core temperature of the aluminum coil is greater than the second set temperature, the control system controls the axial flow fan to operate at the rated speed; when the core temperature of the aluminum coil is between the third set temperature and the second set temperature, the control system controls the axial flow fan to operate at the first set ratio range of the rated speed; when the core temperature of the aluminum coil is between the fourth set temperature and the fifth set temperature, the control system controls the axial flow fan to operate at the second set ratio range of the rated speed.

[0045] In some optional embodiments, the temperature measuring device is an infrared temperature sensor; the probe of the infrared temperature sensor is aligned with the core end face of the aluminum coil; all infrared temperature sensors are evenly distributed along the circumferential direction of the core end face of the aluminum coil; the control system receives the temperature detection signals of each infrared temperature sensor and calculates the average value, and uses the average value of the core temperature of the aluminum coil as the output value of the core temperature of the aluminum coil.

[0046] In some optional embodiments, the coil presence detection device is a photoelectric sensor; the transmitter and receiver of the photoelectric sensor are respectively installed on both sides of the cooling station. When there is an aluminum coil on the cooling station, the aluminum coil blocks the light path of the photoelectric sensor, and the photoelectric sensor sends a presence signal to the control system.

[0047] In some alternative embodiments, the cooling station includes a base and two parallel support rollers disposed on the base; the two support rollers are used to support the outer circumferential surface of the aluminum coil, allowing the aluminum coil to rotate freely on the support rollers.

[0048] In some optional embodiments, an air guide shroud is also included; the air guide shroud is installed at the air outlet of the cooling fan, the air outlet of the air guide shroud is funnel-shaped, and the air outlet area of ​​the air guide shroud is larger than the air outlet area of ​​the cooling fan, so as to expand the coverage of the cooling air.

[0049] Example 3 This embodiment, based on Embodiment 1, improves and refines the control system's use of a timer to record the continuous running time of the cooling fan and issue an alarm signal, as shown in the attached figure. Figure 3 As shown, the specific process is as follows: The control system also includes a timer to record the continuous running time of the cooling fan; when the continuous running time of the cooling fan exceeds the preset maximum running time, and the temperature of the aluminum coil core measured by the temperature measuring device is still greater than the first set temperature (e.g., 50°C), the control system issues an alarm signal.

[0050] The system initializes and the control system acquires preset temperature thresholds, maximum operating time, and fan speed parameters. The coil in-situ detection device monitors the aluminum coils on the cooling station in real time and sends the in-situ detection signal to the control system. If there is no aluminum coil at the cooling station, the control system controls the cooling fan to remain stopped and returns to the coil in-situ detection device for real-time detection; if there is an aluminum coil at the cooling station, the temperature measuring device detects the core temperature of the aluminum coil in real-time and sends the temperature detection signal to the control system. The control system determines whether the core temperature of the aluminum coil is greater than the first set temperature. If so, it starts the cooling fan and records the continuous running time of the fan. If not, it controls the cooling fan to remain stopped and returns to the coil in-situ detection device for real-time detection. During the operation of the cooling fan, the temperature measuring device continuously monitors the core temperature of the aluminum coil, and the control system automatically adjusts the fan speed according to the difference between the core temperature of the aluminum coil and the preset temperature. The control system continuously monitors the temperature of the aluminum coil core to determine if it is below or equal to a preset temperature. If so, it stops the cooling fan, resets the timer, and returns to the coil-in-place detection device for real-time monitoring. Otherwise, the control system checks if the cooling fan's continuous operating time exceeds the preset maximum operating time. If it does, the control system issues an alarm signal, prompting manual inspection; otherwise, it returns to the temperature measuring device to continuously monitor the aluminum coil core temperature. In practical applications, the preset maximum operating time is preferably 24 hours.

[0051] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An automatic cooling device for aluminum coils after annealing, characterized in that, include: At least one cooling station for placing aluminum coils to be cooled; At least one cooling fan is placed on one side of the cooling station, with the air outlet of the cooling fan aimed at the aluminum coil placed on the cooling station, for ventilation and cooling of the aluminum coil. The temperature measuring device is installed on the side of the cooling station to detect the core temperature of the aluminum coil placed on the cooling station in real time and output a temperature detection signal. The coil in-situ detection device is installed around the cooling station to identify whether there are aluminum coils in the cooling station. The control system is electrically connected to the temperature measuring device, the roll material in-situ detection device, and the drive motor of the cooling fan, respectively. It is used to receive the temperature detection signal from the temperature measuring device and the in-situ detection signal from the roll material in-situ detection device, and to control the start and stop of the cooling fan and the fan speed parameters according to the temperature detection signal and the in-situ detection signal.

2. The automatic cooling device for cooling aluminum coils after annealing according to claim 1, characterized in that, The control system controls the start and stop of the cooling fan based on temperature detection signals and presence detection signals, including: When the coil in-situ detection device detects an aluminum coil at the cooling station and the temperature of the aluminum coil core measured by the temperature measuring device is greater than the first set temperature, the control system starts the cooling fan. When the temperature of the aluminum coil core measured by the temperature measuring device is less than or equal to the first set temperature, the control system automatically stops the cooling fan. When the coil in-situ detection device detects that there is no aluminum coil at the cooling station, the control system controls the cooling fan to remain stopped.

3. The automatic cooling device for cooling aluminum coils after annealing according to claim 1, characterized in that, The cooling fan is an axial flow fan; the drive motor of the axial flow fan is a variable frequency motor; the control system is connected to a frequency converter; the control system is electrically connected to the variable frequency motor through the frequency converter, and is used to adjust the speed of the axial flow fan according to the difference between the temperature of the aluminum coil core and the preset temperature threshold, so as to perform stepless adjustment of the air volume.

4. The automatic cooling device for cooling aluminum coils after annealing according to claim 3, characterized in that, When the core temperature of the aluminum coil is higher than the second set temperature, the control system controls the axial flow fan to run at the rated speed; when the core temperature of the aluminum coil is between the third set temperature and the second set temperature, the control system controls the axial flow fan to run at the first set ratio range of the rated speed; when the core temperature of the aluminum coil is between the fourth set temperature and the fifth set temperature, the control system controls the axial flow fan to run at the second set ratio range of the rated speed.

5. The automatic cooling device for cooling aluminum coils after annealing according to claim 1, characterized in that, The temperature measuring device is an infrared temperature sensor; the probe of the infrared temperature sensor is aligned with the core end face of the aluminum coil; all infrared temperature sensors are evenly distributed along the circumference of the core end face of the aluminum coil; the control system receives the temperature detection signals from each infrared temperature sensor and calculates the average value, and uses the average core temperature of the aluminum coil as the output value of the core temperature of the aluminum coil.

6. The automatic cooling device for cooling aluminum coils after annealing according to claim 1, characterized in that, The control system also includes a timer to record the continuous running time of the cooling fan; when the continuous running time of the cooling fan exceeds the preset maximum running time, and the temperature of the aluminum coil core measured by the temperature measuring device is still greater than the first set temperature, the control system issues an alarm signal.

7. The automatic cooling device for cooling aluminum coils after annealing according to claim 1, characterized in that, The coil in-situ detection device is a photoelectric sensor; the transmitter and receiver of the photoelectric sensor are respectively installed on both sides of the cooling station. When there is an aluminum coil on the cooling station, the aluminum coil blocks the light path of the photoelectric sensor, and the photoelectric sensor sends an in-situ signal to the control system.

8. The automatic cooling device for cooling aluminum coils after annealing according to claim 1, characterized in that, The cooling station includes a base and two parallel support rollers mounted on the base; the two support rollers are used to support the outer circumference of the aluminum coil, allowing the aluminum coil to rotate freely on the support rollers.

9. The automatic cooling device for cooling aluminum coils after annealing according to claim 1, characterized in that, It also includes an air guide shroud; the air guide shroud is installed at the air outlet of the cooling fan, the air outlet of the air guide shroud is funnel-shaped, and the air outlet area of ​​the air guide shroud is larger than the air outlet area of ​​the cooling fan, so as to expand the coverage of the cooling air.

10. An automatic cooling control method for an automatic cooling device for cooling aluminum coils after annealing, based on any one of claims 1-9, characterized in that, include: During system initialization, the control system acquires preset temperature thresholds and fan speed parameters; The coil in-situ detection device monitors the aluminum coils on the cooling station in real time and sends the in-situ detection signal to the control system. If there is no aluminum coil at the cooling station, the control system controls the cooling fan to remain stopped and returns to the coil in-situ detection device for real-time detection; if there is an aluminum coil at the cooling station, the temperature measuring device detects the core temperature of the aluminum coil in real-time and sends the temperature detection signal to the control system. The control system determines whether the core temperature of the aluminum coil is greater than the first set temperature; if so, it starts the cooling fan; otherwise, it controls the cooling fan to remain stopped and returns to the coil in-situ detection device for real-time monitoring. During the operation of the cooling fan, the temperature measuring device continuously monitors the core temperature of the aluminum coil. The control system automatically adjusts the fan speed according to the difference between the core temperature of the aluminum coil and the preset temperature, until the core temperature of the aluminum coil is less than or equal to the preset temperature, at which point the cooling fan stops operating.

Images