Cooling control system of circular cooler

Abstract

The invention relates to the technical field of annular coolers, in particular to an annular cooler cooling control system which comprises an annular cooler, a high-temperature-resistant material level scanner, a speed detection device and a controller. The circular cooler is divided into multiple sections of cooling subareas, each section of cooling subarea corresponds to one cooling unit, and each cooling unit comprises an air bellow, a cooling fan, a frequency converter and an air volume adjusting valve; the air box is divided into a side air box and an outer side air box. The high-temperature-resistant material level scanner and the speed detection device are used for collecting data, the controller conducts zoning processing on materials in the width direction according to the data, the average material thickness of different areas is calculated, and then the opening degree of the air volume adjusting valve of the corresponding air bellow is controlled, so that the larger the average material thickness is, the larger the air volume of the air bellow corresponding to the area is, and the higher the material thickness is. The smaller the average material thickness is, the smaller the air volume of the air bellow corresponding to the area is, the problem of non-uniform cooling caused by non-uniform thickness in the material width direction is effectively solved, and the cooling effect of the circular cooler is improved.

Description

Technical Field

[0001] The invention relates to the technical field of annular coolers, in particular to a cooling control system for annular coolers. Background Art

[0002] As the core equipment for cooling sintered ore, the ring cooler drives the cooling air through the material on the trolley through the cooling fan, reducing the high-temperature sintered ore to a suitable temperature. Its cooling effect is directly related to the physical and chemical properties of the sintered ore, the subsequent smelting and processing efficiency, and the enterprise's energy consumption cost.

[0003] For a long time, industry research and technological improvements to address cooling uniformity in ring coolers have primarily focused on thickness variations in the length of the material on the trolley (the tangential direction of the ring cooler's rotation). For example, patent number CN108800967B discloses a neural network-based temperature control method for ring coolers. This method optimizes cooling in different temperature zones through temperature detection, neural network prediction, and blower air volume adjustment. However, this technology only controls overall temperature across the temperature zones and does not consider thickness variations across the width of the material (the radial direction of the ring cooler's rotation). Consequently, it cannot address localized cooling anomalies caused by material variations across the width.

[0004] In actual production scenarios, inconsistent material thickness across the width of the trolley is common due to a combination of factors, including structural defects in the material distribution equipment, differences in material properties, unstable trolley operation, and equipment wear. From the perspective of the distribution equipment, the oscillation of the belt distribution machine, offset of the material drop point, and improperly designed distribution chutes can all lead to uneven material distribution across the width of the trolley. Differences in the material's particle size, moisture content, and viscosity can also contribute to uneven distribution.

[0005] This widthwise material thickness variation seriously interferes with the cooling uniformity of the ring cooler. As the cooling air passes through the material, it follows the principles of fluid mechanics and preferentially flows to thinner areas with less resistance. This results in excessive cooling airflow in these areas, overcooling the material and causing the temperature to fall far below the process target. Meanwhile, due to the greater resistance in thicker areas, insufficient cooling airflow is received, resulting in inadequate cooling and significantly higher temperatures than the target. To compensate for this uneven cooling, it is often necessary to increase fan airflow, increasing power consumption and further increasing production costs. Summary of the Invention

[0006] Based on the above problems in the prior art, the purpose of the present invention is to provide a cooling control system for a ring cooler to solve the problems in the prior art of uneven cooling and high energy consumption caused by uneven thickness of materials in the width direction on the ring cooler trolley.

[0007] In order to achieve the above-mentioned object, the present invention provides a cooling control system for an annular cooler, comprising an annular cooler, a high-temperature resistant level scanner, a speed detection device and a controller; The ring cooler is divided into multiple cooling zones along the direction of material movement, each cooling zone corresponds to a cooling unit, and the cooling unit includes multiple bellows installed at the bottom of the ring cooler and distributed along the conveying track of the ring cooler, cooling fans that supply air to the bellows, and frequency converters electrically connected to the cooling fans. An air volume regulating valve is installed at the air inlet at the bottom of the bellows; the bellows are divided into an inner bellows close to the center of the ring cooler and an outer bellows away from the center of the ring cooler; The high temperature resistant level scanner is used to detect the height of the material on the trolley; The speed detection device is used to detect the operating linear speed of the ring cooler; The controller is communicatively connected with the high temperature resistant level scanner, the speed detection device, the frequency converter, and the air volume regulating valve; The controller is used to divide the material into an inner area and an outer area in the width direction according to the information fed back by the high-temperature resistant level scanner, wherein the inner area can coincide with the vertical projection of the inner bellows, and the outer area can coincide with the vertical projection of the outer bellows; and slice the material of the scanned height, setting the inner area information scanned within the unit time T1 as an inner slice unit, and calculating the average material thickness a of the inner slice unit; setting the outer area information scanned within the unit time T1 as an outer slice unit, and calculating the average material thickness b of the outer slice unit; The controller is further configured to determine the dynamic position of each of the inner slicing units and each of the outer slicing units according to data from the speed detection device; The controller is also used to calculate the real-time average material thickness A directly above each of the inner bellows based on the average material thickness a of all the inner slicing units directly above each of the inner bellows; and calculate the real-time average material thickness B directly above each of the outer bellows based on the average material thickness b of all the outer slicing units directly above each of the outer bellows; at regular intervals T2, the controller compares the real-time average material thickness A directly above each of the inner bellows in a cooling zone with the real-time average material thickness B directly above each of the outer bellows, and controls the opening of the corresponding air volume regulating valve to change, so that the area with a larger average material thickness corresponds to a bellows with a larger air volume, and the area with a smaller average material thickness corresponds to a bellows with a smaller air volume.

[0008] Preferably, the controller slices the material of the scanned height according to the information fed back by the high-temperature resistant level scanner, sets the information scanned within the unit time T1 as a total slicing unit, and calculates the average material thickness z of each of the total slicing units; determines the dynamic position of each of the total slicing units in the ring cooler according to the data of the speed detection device; at regular intervals T2, the controller calculates the real-time average material thickness Z in each of the cooling zones based on the average material thickness z of all the total slicing units in each cooling zone, judges the size of Z and the preset reasonable average material thickness H, and if Z is greater than H, controls the frequency converter to increase the power of the cooling fan; if Z is less than H, controls the frequency converter to reduce the power of the cooling fan.

[0009] Preferably, when judging the size of Z and the preset reasonable average material thickness H, the difference between H and Z is also calculated, and the control program is controlled according to the preset correspondence between power and thickness difference. If Z is greater than H, the inverter is controlled to increase the power of the cooling fan to the preset value; if Z is less than H, the inverter is controlled to reduce the power of the cooling fan to the preset value.

[0010] Preferably, when the controller controls the frequency converter according to a preset power-thickness difference correspondence control program, the preset value is determined according to a mapping result of the difference in the correspondence control program.

[0011] Preferably, at regular intervals T2, the controller will compare the real-time average material thickness A directly above each of the inner bellows in a cooling zone with the real-time average material thickness B directly above each of the outer bellows, first derive a ratio relationship, and then control the corresponding change in the opening of the air volume regulating valve according to a control program based on the pre-set ratio relationship and the corresponding relationship between the opening of the air volume regulating valve.

[0012] Preferably, the adjustment range of the air volume regulating valve opening is determined according to the mapping result of the ratio relationship in the corresponding relationship control program, and the size of the air volume regulating valve opening is positively correlated with the real-time average material thickness directly above the corresponding bellows.

[0013] Preferably, the inner wind box and the outer wind box are distributed along the annular trajectory of the annular cooler.

[0014] Preferably, the air volume regulating valve is an electric regulating valve, a pneumatic regulating valve or a hydraulic regulating valve.

[0015] Preferably, the high temperature resistant level scanner is arranged near the feeding end of the ring cooler and higher than the trolley.

[0016] Preferably, the high temperature resistant level scanner is also arranged at the junction of each cooling zone.

[0017] Compared with the existing technology, this technical solution has at least one of the following beneficial effects: 1. The present invention divides the ring cooler into multiple cooling zones along the material movement direction. Each cooling zone corresponds to a cooling unit, and the bellows are divided into inner and outer bellows. A high-temperature-resistant level scanner and a speed detection device are used to collect data. The controller processes the material in the width direction based on this data, calculates the average material thickness of different areas, and then controls the opening of the air volume regulating valve of the corresponding bellows. The area with a larger average material thickness has a larger air volume, and the area with a smaller average material thickness has a smaller air volume. This effectively solves the problem of uneven cooling caused by uneven thickness of the material in the width direction and improves the cooling effect of the ring cooler. 2. The controller accurately adjusts the power of the cooling fan through the frequency converter based on the comparison results between the real-time average material thickness in the cooling zone and the preset reasonable average material thickness, avoiding energy waste caused by blindly increasing the fan air volume due to uneven cooling, and reducing the company's production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of the cooling control system of the ring cooler provided in an embodiment of the present application; Figure 2 A cross-sectional view of the ring cooler and cooling unit provided in an embodiment of the present application; Figure 3 A control topology diagram of the cooling control system of the ring cooler provided in an embodiment of the present application; In the figure, 1. Circular cooler; 2. High-temperature resistant level scanner; 3. Speed detection device; 4. Controller; 5. Cooling partition; 6. Cooling unit; 61. Cooling fan; 62. Frequency converter; 63. Air volume regulating valve; 64. Inner bellows; 65. Outer bellows; 66. Air supply duct. DETAILED DESCRIPTION

[0019] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] See also Figures 1 to 3 An embodiment of the present application provides a ring cooler cooling control system, including a ring cooler 1, a high-temperature resistant level scanner 2, a speed detection device 3 and a controller 4.

[0021] Specifically, the ring cooler 1 is divided into multiple cooling zones 5 along the material movement direction, each corresponding to a cooling unit 6. The cooling unit 6 comprises a plurality of bellows mounted at the bottom of the ring cooler 1 and distributed along the conveying path of the ring cooler 1, cooling fans 61 supplying air to the bellows, and a frequency converter 62 electrically connected to the cooling fans 61.

[0022] An air volume regulating valve 63 is installed at the air inlet at the bottom of the bellows; the cooling fan 61 is connected to each air inlet through an air supply pipe 66; the top of the bellows is an open structure, and air can be introduced through the air inlet to blow air from bottom to top toward the material in the ring cooler 1; The windboxes are divided into an inner windbox 64 near the center of the ring cooler 1 and an outer windbox 65 away from the center. Both the inner windbox 64 and the outer windbox 65 are arranged along the circular trajectory of the ring cooler 1. The circular trajectory of the inner windbox 64 is located inside the circular trajectory of the outer windbox 65. By dividing the windboxes into inner and outer windboxes 64, 65, it lays the foundation for subsequent differentiated air volume adjustment. The inner and outer windboxes 64, 65 are arranged to have identical structures.

[0023] The high-temperature level scanner 2 is used to detect the material height on the trolley. A radar scanner can be used, but a purge system is required for regular cleaning. A laser rangefinder scanner can also be used, but a water-cooling protective jacket is required.

[0024] The high-temperature-resistant level scanner 2 performs a full-scale scan of the material on the trolley. When the scanning signal is transmitted to the material surface, information at different positions is obtained based on the reflection of the signal from the material surface, thereby obtaining material thickness data.

[0025] In this embodiment, the high temperature resistant level scanner 2 is arranged near the feeding end of the ring cooler 1 and higher than the trolley.

[0026] Among them, setting the scanner at a position higher than the trolley can facilitate the detection of the material below; setting the high-temperature resistant level scanner 2 near the loading end of the ring cooler 1 can obtain the material status in advance. The loading end of the ring cooler 1 is the initial position where the material enters the ring cooler 1. Setting the high-temperature resistant level scanner 2 here can detect the height of the material in real time when it just enters the cooling zone 5, and enable the controller 4 to calculate the expected thickness of the material in each cooling zone 5 in advance, so as to preset the parameters such as the cooling fan 61 power and the air volume control valve 63 opening before the material enters the corresponding cooling zone 5, thereby realizing predictive cooling control and improving the system response speed.

[0027] It should be noted that, in other embodiments, multiple high-temperature resistant level scanners 2 can also be set. In addition to setting the high-temperature resistant level scanner 2 near the feeding end of the ring cooler 1, a high-temperature resistant level scanner 2 can also be set at the junction of each cooling zone 5 to avoid changes in material thickness due to deviation, shaking, etc. of the trolley during transportation. The air volume is still adjusted according to the material thickness information detected by the high-temperature resistant level scanner 2 set near the feeding end of the ring cooler 1 to ensure that the subsequent cooling control strategy can be formulated based on the latest material status, ensuring the timeliness and accuracy of material height detection.

[0028] The speed detection device 3 is used to detect the operating linear speed of the ring cooler 1 and send a signal to the controller 4 .

[0029] It is understood that the controller 4 can obtain the speed of the trolley of the cooler 1 in two ways: directly obtaining the control terminal signal and installing an independent speed detection device 3. The direct connection to the control terminal of the cooler 1 to obtain the speed signal presupposes that the drive control system of the cooler 1, such as the inverter 62 or PLC, has a built-in speed detection function and can output speed signals, such as pulse signals, analog signals, or digital communication signals. This is suitable for coolers 1 with a high degree of automation. The control terminal of its drive motor, such as a variable frequency motor, calculates the speed in real time and outputs the speed data through a communication interface or hardware port. In this case, there is no need to install additional physical detection devices, which can reduce hardware investment. However, this method has certain limitations. If there are errors in the speed calculation within the control terminal, such as incorrect transmission ratio parameter settings or motor encoder failure, the speed data will be distorted. If the transmission system experiences abnormalities such as slippage or jamming, such as friction plate wear causing the actual trolley speed to fall below the motor set speed, the target speed output by the control terminal may be inconsistent with the actual trolley speed, causing the data obtained by the controller 4 to be out of sync with the actual operating status.

[0030] Another approach is to install an independent speed detection device 3 to measure the actual speed of the trolley. This is particularly useful when the drive system of the annular cooler 1 lacks reliable speed detection. The speed detection device 3 can be an encoder, specifically mounted on the transmission friction plate of the annular cooler 1. The encoder calculates the linear speed based on the number of pulses generated by the friction plate as it rotates, and then converts this into the linear speed of the trolley.

[0031] It can be understood that the transmission friction plate is the direct driving component of the ring cooler trolley 1, which drives the trolley through friction transmission or gear engagement. Detecting the linear speed here can directly reflect the actual operating speed of the trolley and avoid detection errors caused by slippage and wear of the intermediate transmission links.

[0032] Speed detection device 3 can also be implemented as a proximity switch or photoelectric sensor. By installing a detection point alongside the trolley track, the speed can be calculated by sensing the frequency of the trolley's baffle or specific marker passing by. Speed detection device 3 can also be implemented as a laser velocimeter, which illuminates the trolley surface with a laser and calculates the moving speed using the Doppler effect or image recognition.

[0033] In this embodiment, the controller 4 is communicatively connected with the high-temperature resistant level scanner 2, the speed detection device 3, the frequency converter 62, and the air volume regulating valve 63. Specifically, the connection can be achieved through electrical signals. The controller 4 controls the operation of the frequency converter 62 and the air volume regulating valve 63 by obtaining real-time data from the high-temperature resistant level scanner 2 and the speed detection device 3.

[0034] Based on the information fed back by the high-temperature-resistant level scanner 2, the controller 4 divides the material widthwise into an inner region and an outer region. The inner region coincides with the vertical projection of the inner bellows 64, and the outer region coincides with the vertical projection of the outer bellows 65. The controller 4 also slices the material at the scanned height, defining the inner region scanned within a unit time T1 as an inner slice unit and calculating the average material thickness a for each inner slice unit. Similarly, the controller 4 defines the outer region scanned within a unit time T1 as an outer slice unit and calculating the average material thickness b for each outer slice unit. This slicing and data analysis allows for a precise understanding of material thickness.

[0035] At the same time, the controller 4 also slices the material at the scanned height according to the information fed back by the high-temperature resistant level scanner 2 , sets the information scanned within the unit time T1 as a total slicing unit, and calculates the average material thickness z of the total slicing unit.

[0036] It is understandable that since the annular cooler 1 is in a continuous operation state, the material is constantly moving from upstream to downstream. In order to facilitate the analysis of dynamically changing materials, the controller 4 sets a unit time T1 based on the operating line speed of the annular cooler 1, the scanning frequency of the high-temperature resistant level scanner 2, and the length of the bellows. Within this unit time T1, the high-temperature resistant level scanner 2 scans the material on the trolley and integrates all the material height information obtained from the scan into a total slice unit. In this way, the originally continuous material height change process is divided into discrete data blocks with unit time T1 as the interval, and each total slice unit represents the overall situation of the material height within the time period.

[0037] Spatially, controller 4 divides the material widthwise into inner and outer regions based on the distribution of the bellows in ring cooler 1. Within each unit of time, T1, data from each inner and outer region is processed independently. The inner region scanned within T1 is defined as an inner slice unit, and its average thickness, a, is calculated. The outer region scanned within T1 is defined as an outer slice unit, and its average thickness, b, is calculated. This spatial slicing enables refined analysis of different regions across the material width, enabling targeted cooling control based on thickness differences in these regions.

[0038] Controller 4 is also used to determine the dynamic position of each inner slicing unit, each outer slicing unit, and each total slicing unit in the annular cooler 1 based on the data from speed detection device 3. It anchors the average material thickness data of the total slicing unit, inner slicing unit, and outer slicing unit to their respective positions, and simultaneously determines the cooling zone 5 and wind box position in which they are located. This process enables controller 4 to grasp the specific position of the material in the annular cooler 1 in real time, providing position information support for subsequent precise control.

[0039] By presetting a reasonable average material thickness as H, the controller 4 controls the calculation of the real-time average material thickness Z in each cooling zone 5 at regular intervals T2 based on the average material thickness z of all total slicing units in each cooling zone 5, specifically the sum of the average material thickness z of all total slicing units in each cooling zone 5 divided by the total number of slicing units, and judges the size of Z and the preset reasonable average material thickness H. If Z is greater than H, it means that the material in the current cooling zone 5 is thicker and more cooling air volume is required, and the frequency converter 62 is controlled to increase the power of the cooling fan 61; if Z is less than H, it means that the material is thinner, and the frequency converter 62 is controlled to reduce the power of the cooling fan 61, thereby realizing dynamic adjustment of the power of the cooling fan 61 to meet the cooling requirements of materials of different thicknesses.

[0040] It should be noted that the time T2 should be set to be less than the time it takes for a total slicing unit to pass through a bellows, so as to avoid the situation where the bellows miss the opportunity to adjust a total slicing unit.

[0041] The setting time of T2 should not be too small. Although the smaller the setting time of T2, the finer the air volume adjustment, it will cause the adjustment frequency to be too fast, which will shorten the life of the cooling fan and air volume control valve.

[0042] The unit time T1 should not be too long, and should be less than the time it takes for a total slice unit to pass through the wind box. In this way, the length of a total slice unit will also be less than the length of a wind box, which makes it easier to adjust the air volume. The length of the total slicing unit is preferably one-half to one-eighth of the length of the bellows, preferably one-quarter. The unit time T1 is preferably one-quarter of the time required for the material to pass through the bellows.

[0043] The time T2 may be set to be the same as the unit time T1 or smaller than the unit time T1.

[0044] Furthermore, when judging the size of Z and the preset reasonable average material thickness H, the difference between H and Z can also be calculated. According to the preset power and thickness difference correspondence control program, such as the power mapping table, if Z is greater than H, the inverter 62 is controlled to increase the power of the cooling fan 61 to the preset value; if Z is less than H, the inverter 62 is controlled to reduce the power of the cooling fan 61 to the preset value. The preset value is determined based on the mapping result of the difference in the correspondence control program, and the power adjustment amplitude of the cooling fan 61 is positively correlated with the difference between H and Z.

[0045] At the same time, the controller 4 calculates the real-time average material thickness A directly above each inner bellows 64 based on the average material thickness a of all inner slicing units directly above each inner bellows 64, specifically the sum of the average material thickness a of all inner slicing units directly above each inner bellows 64 divided by the number of inner slicing units; Calculate the real-time average material thickness B above each outer bellows 65 based on the average material thickness b of all outer slicing units directly above each outer bellows 65, specifically the sum of the average material thickness b of all outer slicing units directly above each outer bellows 65 divided by the number of outer slicing units; At regular intervals T2, the controller 4 compares the real-time average material thickness A directly above each inner wind box 64 in a cooling zone 5 with the real-time average material thickness B directly above each outer wind box 65, first derives the ratio relationship, and then controls the corresponding opening change of the air volume regulating valve 63 according to the control program based on the predetermined ratio relationship and the corresponding relationship between the opening of the air volume regulating valve 63.

[0046] The opening adjustment range of the air volume regulating valve 63 is determined by the mapping parameters in the preset control program according to the ratio relationship. The size of the opening of the air volume regulating valve 63 is positively correlated with the real-time average material thickness directly above the corresponding bellows, so that the area with a larger average material thickness has a larger air volume corresponding to the bellows, and the area with a smaller average material thickness has a smaller air volume corresponding to the bellows.

[0047] It should be noted that, in general, the vertical projection of a certain inner slice unit may not completely overlap with the vertical projection of the inner bellows 64. Therefore, all inner slice units directly above each inner bellows 64 are defined as those that overlap with the vertical projection of the inner bellows 64. Regardless of the degree of overlap, as long as there is overlap, they are considered within the range. Similarly, the outer slice units and the total slice units are defined in the same way.

[0048] The air volume regulating valve 63 is an electric regulating valve. The electric regulating valve is driven by a motor and can receive the electrical signal output by the controller 4, accurately converting the electrical signal into the movement of the valve core to achieve precise adjustment of the opening degree.

[0049] The air volume regulating valve 63 can also be a pneumatic regulating valve. The pneumatic regulating valve uses compressed air to drive the pneumatic actuator to move, such as a diaphragm or piston actuator, to convert air pressure into mechanical force, driving the valve core to rotate at a preset angle or move linearly. A positioner can be configured in the pneumatic circuit to receive the control signal output by the controller 4 and convert it into a corresponding air pressure signal to accurately control the action of the actuator, thereby adjusting the valve core opening.

[0050] The air volume regulating valve 63 can also be a hydraulic regulating valve. The hydraulic regulating valve uses hydraulic oil as the working medium, uses the pressure generated by the hydraulic pump to drive the hydraulic cylinder or hydraulic motor, and then drives the valve core to adjust according to the preset angle. The flow and pressure of the hydraulic oil are controlled by the proportional valve or servo valve, which can achieve high-precision adjustment of the valve core opening.

[0051] The cooling process of the ring cooler 1 is a multi-device collaborative, data-driven dynamic control process, as follows: 1. Material entry and initial detection: High-temperature material enters the feeding end of the ring cooler 1 and is loaded onto a trolley. A high-temperature-resistant level scanner 2, located near the feeding end and above the trolley, immediately begins operation, performing real-time detection of the material height on the trolley and obtaining information on the material's height distribution in the width direction. Simultaneously, the speed detection device 3 of the ring cooler 1 monitors the operating linear speed of the ring cooler 1 in real time and transmits the data to the controller 4. 2. Data Processing and Parameter Calculation: After receiving data from the high-temperature-resistant level scanner 2 and the speed detection device 3, the controller 4 slices the material height information, sets the material information scanned within a unit time T1 as a total slice unit, and calculates its average material thickness z. The material is divided into an inner area and an outer area in the width direction, and the average material thickness a of the inner slice unit and the average material thickness b of the outer slice unit are calculated respectively. At the same time, based on the trolley linear speed data, the controller 4 determines the dynamic position of each total slice unit, inner slice unit, and outer slice unit in the ring cooler 1 and the cooling zone 5 in which they are located. 3. Preliminary adjustment of the power of the cooling fan 61: At regular intervals T2, the controller 4 calculates the real-time average material thickness Z of each cooling zone 5 based on the average material thickness z of the total slicing units in the cooling zone 5, and compares Z with the preset reasonable average material thickness H. If Z is greater than H, it means that the material in the current cooling zone 5 is thicker and requires more cooling air. The controller 4 then sends a command to the inverter 62 to increase the power of the cooling fan 61 to the preset value. If Z is less than H, the inverter 62 is controlled to reduce the power of the cooling fan 61. This preliminarily adjusts the output power of the cooling fan 61 to meet the cooling requirements of materials of different thicknesses. 4. Precise adjustment of the air volume regulating valve 63: At regular intervals T2, within each cooling zone 5, the controller 4 further calculates the real-time average material thickness A above the inner bellows 64 based on the average material thickness a of all inner slicing units above the inner bellows 64; and calculates the real-time average material thickness B above the outer bellows 65 based on the average material thickness b of all outer slicing units above the outer bellows 65. A and B are compared and a ratio is derived. The control program precisely adjusts the opening of the air volume regulating valve 63 at the air inlet of the inner bellows 64 and the outer bellows 65 according to the correspondence between the preset ratio and the opening of the air volume regulating valve 63, so that the air inlet volume of the bellows corresponding to the area with larger average material thickness increases, and the air inlet volume of the bellows corresponding to the area with smaller average material thickness decreases, thereby ensuring uniform cooling of the material in the width direction; 5. Material movement and continuous cooling: As the trolley moves along the track of the ring cooler 1, the material passes through each cooling zone 5 in turn. During the movement, the above-mentioned data detection, calculation and adjustment process is continuously carried out; when multiple high-temperature resistant level scanners 2 are provided, the controller 4 will also determine the real-time status of the material based on the scanning data of the high-temperature resistant level scanners 2 adjacent to each cooling zone 5, and adjust the power of the cooling fan 61 and the opening of the air volume regulating valve 63, without using the scanning data of the high-temperature resistant level scanners 2 that are not adjacent to the cooling zone 5; for example, Figure 1As shown, when the ring cooler 1 is divided into one cooling zone, two cooling zones, three cooling zones, and four cooling zones in sequence along the direction of material movement, a high-temperature resistant level scanner 2 is set at the junction of each cooling zone 5. When the material moves from the one cooling zone to the two cooling zones, the scanning data of the high-temperature resistant level scanner 2 at the feeding end is no longer used, and the scanning data of the high-temperature resistant level scanner 2 set at the junction of the one cooling zone and the two cooling zones is used instead; similarly, when the material moves from the two cooling zones to the three cooling zones, the scanning data of the high-temperature resistant level scanner 2 set at the junction of the one cooling zone and the two cooling zones is no longer used, and the scanning data of the high-temperature resistant level scanner 2 set at the junction of the two cooling zones and the three cooling zones is used instead; in this way, it can be ensured that the material can obtain the appropriate cooling air volume during the entire cooling process, until the material is cooled to the target temperature and discharged from the discharge end of the ring cooler 1, completing the cooling process.

[0052] It should be noted that those skilled in the art may make various modifications and improvements without departing from the scope of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be based on the appended claims.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0054] In the description of the present invention, “a plurality of” means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0055] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

Claims

1. A cooling control system for an annular cooler, characterized in that: It includes a ring cooler (1), a high temperature resistant level scanner (2), a speed detection device (3) and a controller (4); The annular cooler (1) is divided into multiple cooling zones (5) along the direction of material movement, each cooling zone (5) corresponds to a cooling unit (6), the cooling unit (6) comprises a plurality of bellows distributed along the conveying track of the annular cooler (1), a cooling fan (61) for supplying air to the bellows, and a frequency converter (62) electrically connected to the cooling fan (61), an air volume regulating valve (63) is installed at the air inlet at the bottom of the bellows; the bellows are divided into an inner bellows (64) close to the center of the annular cooler (1) and an outer bellows (65) away from the center of the annular cooler (1); The high temperature resistant level scanner (2) is used to detect the height of the material on the trolley; The speed detection device (3) is used to detect the operating linear speed of the ring cooler (1); The controller (4) is communicatively connected to the high-temperature-resistant level scanner (2), the speed detection device (3), the frequency converter (62), and the air volume regulating valve (63); The controller (4) is used to divide the material into an inner area and an outer area in the width direction according to the information fed back by the high-temperature resistant level scanner (2), wherein the inner area can coincide with the vertical projection of the inner bellows (64), and the outer area can coincide with the vertical projection of the outer bellows (65); and to slice the material at the scanned height, setting the inner area information scanned within a unit time T1 as an inner slice unit, and calculating the average material thickness a of the inner slice unit; The outer area information scanned within the unit time T1 is set as an outer slicing unit, and the average material thickness b of the outer slicing unit is calculated; The controller (4) is further configured to determine the dynamic position of each of the inner slicing units and each of the outer slicing units based on data from the speed detection device (3); The controller (4) is further configured to calculate the real-time average material thickness A above each inner bellows (64) based on the average material thickness a of all the inner slice units above each inner bellows (64); and to calculate the real-time average material thickness B above each outer bellows (65) based on the average material thickness b of all the outer slice units above each outer bellows (65); and at regular intervals T2, the controller (4) compares the real-time average material thickness A above each inner bellows (64) in a cooling zone (5) with the real-time average material thickness B above each outer bellows (65), and controls the opening of the corresponding air volume regulating valve (63) to change, so that the air volume of the bellows corresponding to the area with the larger average material thickness is also larger, and the air volume of the bellows corresponding to the area with the smaller average material thickness is also smaller.

2. The cooling control system of the ring cooler according to claim 1, characterized in that: The controller (4) slices the material at the scanned height according to the information fed back by the high-temperature resistant level scanner (2), sets the information scanned within a unit time T1 as a total slicing unit, and calculates the average material thickness z of each of the total slicing units; determines the dynamic position of each of the total slicing units in the ring cooler (1) according to the data of the speed detection device (3); and calculates the real-time average material thickness Z in each of the cooling partitions (5) at regular intervals T2 based on the average material thickness z of all the total slicing units in each cooling partition (5), judges the size of Z and a preset reasonable average material thickness H, and if Z is greater than H, controls the frequency converter (62) to increase the power of the cooling fan (61); if Z is less than H, controls the frequency converter (62) to reduce the power of the cooling fan (61).

3. The cooling control system of the ring cooler according to claim 2, characterized in that: When judging the size of Z and the preset reasonable average material thickness H, the difference between H and Z is also calculated, and the control program is controlled according to the preset corresponding relationship between power and thickness difference. If Z is greater than H, the frequency converter (62) is controlled to increase the power of the cooling fan (61) to the preset value; if Z is less than H, the frequency converter (62) is controlled to reduce the power of the cooling fan (61) to the preset value.

4. The cooling control system of the ring cooler according to claim 3, characterized in that: When the controller (4) controls the frequency converter (62) according to a preset power and thickness difference correspondence control program, the preset value is determined according to a mapping result of the difference in the correspondence control program.

5. The cooling control system of the ring cooler according to claim 1, characterized in that: At regular intervals T2, the controller (4) compares the real-time average material thickness A above each of the inner bellows (64) in a cooling zone (5) with the real-time average material thickness B above each of the outer bellows (65), firstly obtains a ratio relationship, and then controls the corresponding opening of the air volume regulating valve (63) according to a control program based on the corresponding relationship between the preset ratio relationship and the opening of the air volume regulating valve (63), thereby controlling the change in the opening of the corresponding air volume regulating valve (63).

6. The cooling control system of the ring cooler according to claim 5, characterized in that: The adjustment range of the opening of the air volume regulating valve (63) is determined according to the mapping result of the ratio relationship in the corresponding relationship control program, and the size of the opening of the air volume regulating valve (63) is positively correlated with the real-time average material thickness directly above the corresponding wind box.

7. The cooling control system of the ring cooler according to claim 1, characterized in that: The inner wind box (64) and the outer wind box (65) are distributed along the annular trajectory of the annular cooler (1).

8. The cooling control system of the ring cooler according to claim 1, characterized in that: The air volume regulating valve (63) is an electric regulating valve, a pneumatic regulating valve or a hydraulic regulating valve.

9. The cooling control system of the ring cooler according to claim 1, characterized in that: The high-temperature resistant level scanner (2) is arranged at a position close to the feeding end of the ring cooler (1) and higher than the trolley.

10. The cooling control system of the ring cooler according to claim 9, characterized in that: The high temperature resistant level scanner (2) is also arranged at the junction of each cooling partition (5).

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