Sectional cooling device for aluminum material hot rolling

Abstract

The invention provides a sectional cooling device for aluminum material hot rolling, and relates to the technical field of aluminum material production equipment.The sectional cooling device comprises a cooling beam set arranged on the side, close to an inlet, of a roller set, the cooling beam set comprises an upper cooling beam and a lower cooling beam, and cooling cavities are formed in the upper cooling beam and the lower cooling beam; a plurality of spraying pipes are arranged on the sides, close to the roller set, of the upper cooling beam and the lower cooling beam, the spraying pipes are communicated with three rows of spraying heads which are sequentially arranged from top to bottom, and each spraying pipe is provided with an electromagnetic valve for controlling the corresponding three spraying heads to be opened and closed; a temperature measuring assembly is arranged on the side, away from the cooling beam set, of the roller set and comprises an upper temperature measuring frame, a lower temperature measuring frame and a plurality of temperature sensors in one-to-one correspondence with the spraying pipes. Temperature adjusting assemblies are connected between the spraying pipe and the three corresponding spraying heads. The spraying frequency of the spraying head is controlled by adjusting the opening and closing times of the electromagnetic valve, the cooling liquid spraying amount is controlled, the temperature of the cooling liquid at different positions of the roller is adjusted through the temperature adjusting assembly, and the segmented cooling effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum material production equipment, and in particular to a segmented cooling device for hot rolling of aluminum materials. Background Art

[0002] A large amount of heat is generated during the hot rolling of aluminum strips, which causes the rollers to be thermally deformed over a long period of time. Since the heat dissipation conditions at different positions of the rollers in the axial direction are different, the degree of thermal deformation at different positions of the rollers in the axial direction is different, forming a certain thermal crown, which ultimately affects the shape of the aluminum strip during the rolling process. In the prior art, the thermal crown of the rollers is usually controlled by segmented cooling, that is, by controlling the flow rate of coolant in different sections of the rollers to control the thermal deformation of the rollers during the rolling process, so as to achieve the purpose of controlling the shape of the strip.

[0003] Most of the current segmented cooling devices control the amount of coolant sprayed by adjusting the flow rate of the nozzle through the flow control valve, thereby achieving the purpose of segmented cooling. However, this method of frequently adjusting the opening of the flow control valve can easily cause wear of the flow control valve and affect the control accuracy of the flow control valve on the nozzle flow. Summary of the invention

[0004] The purpose of the present invention is to provide a segmented cooling device for hot rolling of aluminum materials, which controls the spray frequency of the spray head by the switching times of the electromagnetic valve, realizes the control of the spray amount of the coolant, prolongs the service life of the electromagnetic valve, ensures the control accuracy of the spray amount, and adjusts the temperature of the coolant at different positions of the roller according to actual conditions to improve the segmented cooling effect.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A sectional cooling device for hot rolling of aluminum materials, comprising a cooling beam group arranged at a side of a rolling group near an inlet, the rolling group comprising an upper rolling group and a lower rolling group, the axes of which are horizontally perpendicular to a feeding direction and are arranged correspondingly up and down, the cooling beam group comprising an upper cooling beam and a lower cooling beam corresponding to and parallel to the upper rolling group and the lower rolling group, the upper cooling beam and the lower cooling beam being provided with cooling cavities arranged along their length directions, the cooling cavities being connected with a liquid inlet pipe, the other end of the liquid inlet pipe being connected to a liquid supply device;

[0007] A plurality of spray pipes connected to the corresponding cooling chambers are arranged in an array along the length direction of the upper cooling beam and the lower cooling beam on one side close to the rolling roller group, and the plurality of spray pipes on the upper cooling beam and the lower cooling beam correspond one to another; one end of each of the spray pipes away from the cooling chamber is connected to three rows of spray heads arranged in sequence from top to bottom, and the three rows of spray heads on the upper cooling beam and the three rows of spray heads on the lower cooling beam are arranged in a rectangular array, and the spray ports of the spray heads face the corresponding upper rolling rollers and lower rolling rollers;

[0008] A temperature measuring assembly is provided on the side of the roll group away from the cooling beam group, and the temperature measuring assembly includes an upper temperature measuring frame and a lower temperature measuring frame which are parallel to and correspond to the upper roll and the lower roll one by one, and a plurality of temperature sensors are provided on the side of the upper temperature measuring frame and the lower temperature measuring frame which are close to the roll group along the length direction thereof, and the plurality of temperature sensors of the upper temperature measuring frame correspond to the plurality of spray pipes on the upper cooling beam one by one, and the plurality of temperature sensors on the lower temperature measuring frame correspond to the plurality of spray pipes on the lower cooling beam one by one;

[0009] Each of the spray pipes is provided with a solenoid valve for controlling the opening and closing of the corresponding three spray heads. The solenoid valve is connected to the control system through communication feedback. The temperature sensor is connected to the solenoid valve on the corresponding spray pipe through the control system through communication control. The control system controls the opening and closing times and frequency of the corresponding solenoid valve according to the feedback result of the temperature sensor.

[0010] A total temperature sensor is provided in the cooling cavity of the upper cooling beam and the lower cooling beam, and a temperature control component and a liquid temperature sensor are also connected between each of the spray pipes and the corresponding three spray heads. The total temperature sensor, the temperature sensor and the liquid temperature sensor are connected to the temperature control component for communication feedback control through a control system. The control system controls the temperature control component to adjust the temperature of the coolant sprayed from the three spray heads corresponding to each spray pipe according to the feedback results of the total temperature sensor, the temperature sensor and the liquid temperature sensor.

[0011] By adopting the above technical scheme, a number of spray pipes and temperature sensors correspond to the upper roller and lower roller partitions, and the upper roller and the lower roller are divided into a number of different temperature zones. The temperature sensor detects the temperature of the corresponding area and feeds the result back to the control system. The control system reduces the temperature of the upper roller / lower roller in this area to the coolant temperature and flow required for the set temperature according to the set calculation, and obtains the required coolant temperature according to the mixed calculation of the coolant temperature in the cooling chamber fed back by the total temperature sensor. The temperature control component is controlled to cooperate with the liquid temperature sensor to adjust the coolant temperature sprayed from the three spray heads connected to the corresponding spray pipes. According to the single spraying amount of the spray head and the calculated required flow, the opening and closing times and frequency of the solenoid valve are controlled to adjust the coolant flow sprayed from the three spray heads.

[0012] The present invention adjusts the number of switching times of the electromagnetic valve through the feedback result of the temperature sensor to control the spray frequency of the spray head and realize the control of the spray amount of the coolant. Compared with the prior art of repeatedly adjusting the opening of the flow valve to adjust the nozzle flow, the service life of the electromagnetic valve can be extended and the control accuracy of the spray amount can be ensured. Compared with the plate shape detection, the temperature detection of the roll group can more intuitively and accurately reflect the temperature of the roll group, which is convenient for better control of the segmented cooling. The temperature of the coolant at different positions of the roll group can also be adjusted according to the temperature of different positions of the roll group, effectively improving the segmented cooling effect.

[0013] Furthermore, the three spray heads corresponding to each of the spray pipes spray and cover the corresponding upper and lower roller surfaces by no less than 60°, and the spray coverage overlap area of ​​two adjacent spray heads along the length direction of the roller group is less than 10%.

[0014] By adopting the above technical solution, the three spray heads corresponding to each spray pipe spray and cover the corresponding upper and lower roller surfaces by no less than 60°, which not only ensures the cooling coverage of the roller group, but also concentrates the coolant, effectively ensuring the cooling effect of the roller group. The overlapping area of ​​the spray coverage of two adjacent spray heads in the length direction of the roller group is less than 10%, avoiding the large overlap rate of adjacent cooling areas, resulting in large temperature changes after mixing coolants of different temperatures, which easily leads to poor cooling effects in both adjacent areas.

[0015] Furthermore, the cooling temperature of the coolant sprayed by the three spray heads corresponding to each of the spray pipes is consistent, and the cooling temperature of the coolant sprayed by the six spray heads corresponding to the upper and lower spray pipes on the upper cooling beam and the lower cooling beam is consistent; the cooling temperature of the coolant sprayed from the middle column of spray heads to the two side columns of spray heads gradually increases along the length direction of the upper cooling beam, and the temperature of the coolant sprayed by the two side spray heads symmetrical about the middle column of spray heads is consistent.

[0016] By adopting the above technical solution, the heat dissipation condition in the middle of the roll group is not as good as that at the two ends. The closer to the two ends, the lower the temperature of the roll group. The temperature in the middle of the roll group is higher than the temperature at the two ends, and the temperature at the two ends is basically symmetrical. Therefore, the temperature of the coolant used to cool the middle position of the roll group should be the lowest, and the temperature of the coolant at the two ends gradually increases and is symmetrical to ensure the segmented cooling effect of the roll group. Among them, the cooling temperature of the coolant sprayed by the three spray heads corresponding to each spray pipe is consistent, so as to avoid the mixing of coolants of different temperatures affecting the cooling effect. In addition, the cooling temperature of the coolant sprayed by the six spray heads corresponding to the upper and lower corresponding spray pipes on the upper cooling beam and the lower cooling beam is consistent, so as to ensure the consistent cooling effect at the upper and lower corresponding positions of the upper and lower rolls, thereby ensuring the uniform rolling effect of the upper and lower surfaces of the aluminum strip.

[0017] Furthermore, the temperature control component includes a heating pipe and a cooling pipe connected to the end of the spray pipe away from the cooling chamber and arranged in parallel, and the three spray heads corresponding to the spray pipe are connected to the end of the heating pipe and the cooling pipe away from the spray pipe; the heating pipe and the cooling pipe are respectively provided with a heating water inlet valve and a cooling water inlet valve at one end close to the spray pipe, and the heating pipe and the cooling pipe are respectively provided with a heating water outlet valve and a cooling water outlet valve at one end close to the spray head; the liquid temperature sensor includes a heating sensor arranged in the heating pipe and a cooling sensor arranged in the cooling pipe.

[0018] By adopting the above technical solution, when the temperature of the coolant in the cooling chamber is higher than the required cooling temperature, the cooling water inlet valve and the cooling water outlet valve are opened, and the coolant is cooled by the cooling pipe before being sprayed out by the spray head. When the cooling temperature in the cooling chamber is lower than the required cooling temperature, the heating water inlet valve and the heating water outlet valve are opened, and the coolant is heated by the heating pipe before being sprayed out by the spray head. The heating sensor and the cooling sensor detect the coolant temperature in the corresponding heating pipe and the cooling pipe respectively to adjust the heating degree of the heating pipe and the cooling pipe.

[0019] Furthermore, the heating tube and the cooling tube are both serpentine structures, the heating tube is wound with an electric heating wire and an insulation tube wrapped around the electric heating wire, and the heating sensor is connected to the electric heating wire for communication feedback; the cooling tube is wound with a cooling sleeve, a circulating fan is connected between both ends of the cooling sleeve, and the cooling sensor is connected to the circulating fan for communication feedback.

[0020] By adopting the above technical solution, the heating sensor feedback controls the operation of the electric heating wire according to the detected coolant temperature in the heating tube, and heats the coolant in the heating tube to the required temperature. The insulation tube protects the electric heating wire while reducing heat loss to ensure the heating efficiency of the coolant. The cooling sensor feedback controls the operation of the circulating fan according to the detected coolant temperature in the cooling tube, and cools the coolant in the cooling tube to the required temperature. Among them, both the heating tube and the cooling tube have no serpentine structure, which can increase the travel of the coolant in the heating tube and the cooling tube to ensure sufficient heating or cooling time for the coolant.

[0021] Furthermore, a connecting ring is provided at one end of the spray pipe close to the corresponding upper cooling beam / lower cooling beam, and a mounting ring cooperating with the connecting ring is provided on the side wall of the upper cooling beam / lower cooling beam; the outer wall of the connecting ring is symmetrically provided with fixing holes arranged along its radial direction with the axis, and the side wall of the mounting ring is provided with a fixing rod cooperating with the corresponding fixing hole, and the end of the fixing rod away from the fixing hole is connected to a limiting rod horizontally and vertically therewith to form an L-shaped structure, and a tensioning spring is connected between the ends of the two limiting rods away from the corresponding fixing rods.

[0022] By adopting the above technical solution, the connecting ring is connected to the mounting ring, and under the action of the tension spring, the fixing rod is tightly inserted into the fixing hole, so that the spray pipe and the upper cooling beam / lower cooling beam can be detachably installed, and the axis of the fixing hole is horizontally perpendicular to the axis of the mounting ring, which effectively ensures the tightness of the connection between the spray pipe and the upper cooling beam / lower cooling beam, and avoids loosening between the connecting ring and the mounting ring under the high pressure of the coolant. In addition, the spray pipe, the temperature control assembly and the three spray heads form a modular structure. When replacement and maintenance are required, it is only necessary to drive the two limit rods away from each other to overcome the tension of the tension spring, and pull the fixing rod out of the fixing hole, so that the spray pipe can be modularly disassembled and replaced, which effectively improves the replacement efficiency and avoids affecting the continuous operation of the entire device.

[0023] Furthermore, a positioning seat is provided between the ends of the upper temperature measuring frame and the lower temperature measuring frame on the same side, and the positioning seat is horizontally slidably installed at both ends of the rolling mill group along a direction perpendicular to the length of the rolling mill group, and the ends of the upper temperature measuring frame and the lower temperature measuring frame are vertically slidably installed on the corresponding positioning seats.

[0024] By adopting the above technical scheme, the upper temperature measuring frame and the lower temperature measuring frame are vertically slidably installed on the adjustment seat, and the temperature measuring position of the temperature sensor for the upper roller / lower roller can be adjusted. The adjustment seat is horizontally slidably installed at both ends of the roller group along a direction perpendicular to the length of the roller group, and the temperature measuring distance of the temperature sensor for the upper roller / lower roller can be adjusted to meet the use requirements under different production conditions and ensure its working effect, thereby effectively improving the scope of application.

[0025] Furthermore, both ends of the upper cooling beam and the lower cooling beam are provided with vertically arranged mounting side plates, and a mounting seat is provided between the mounting side plates located at the same end and is vertically slidably installed on both sides of the mounting seat respectively, and the mounting seat is horizontally slidably installed at both ends of the rolling mill group along a direction perpendicular to the length of the rolling mill group.

[0026] By adopting the above technical scheme, the upper cooling beam and the lower cooling beam are installed on the mounting seat by vertical sliding through the mounting side plates. The distance between the upper cooling beam and the lower cooling beam can be adjusted according to the thickness of the aluminum strip, the degree of wear of the rolling rollers, etc., and the distance between the upper cooling beam and the lower cooling beam and the rolling roller group can be adjusted by sliding the mounting seat horizontally perpendicular to the length direction of the rolling roller group to adjust the spray position and spray distance of the spray head on the rolling roller group, thereby meeting the use requirements under different production conditions and ensuring its working effect, effectively improving the scope of application.

[0027] Furthermore, the upper cooling beam and the lower cooling beam are respectively provided with unloading holes connected to the corresponding cooling chambers near both ends thereof, unloading valves are installed at the unloading holes, and the cooling chamber is connected to a pressure sensor which is connected to the corresponding unloading valve for communication feedback control.

[0028] By adopting the above technical solution, the pressure sensor detects the pressure of the coolant in the cooling chamber in real time, and timely communicates and feedbacks to control the unloading valve to open the unloading hole to unload the cooling chamber, thereby ensuring the stability of the coolant supply pressure, avoiding problems such as solenoid valve failure caused by excessive pressure, and ensuring the normal progress and safety of the segmented cooling work.

[0029] Furthermore, one end of the liquid inlet pipe close to the cooling chamber is connected to two liquid inlet branches arranged in parallel, and a switching valve is provided at the connection point between the liquid inlet pipe and the two liquid inlet branches, and both ends of each of the liquid inlet branches are provided with on-off valves for controlling the opening and closing thereof; a filter is provided in each of the liquid inlet branches, and the liquid inlet branch is also connected to a flow sensor located on the side of the filter close to the cooling chamber, and the flow sensor is connected to the switching valve and the corresponding on-off valve for communication feedback control.

[0030] By adopting the above technical solution, the liquid inlet pipe is connected to two liquid inlet branches, and the two liquid inlet branches are controlled to work alternately by the switching valve and the on-off valve. The filter screen filters the coolant entering the cooling chamber to ensure the cleanliness of the coolant, avoid the blockage of the spray head affecting the segmented cooling effect, or prevent impurities from spraying onto the roll group affecting the rolling effect. Among them, when the flow sensor detects that the input flow becomes smaller, it means that the filter screen is blocked, and the communication feedback control switching valve and the on-off valve switch the operation of the two liquid inlet branches to ensure the continuity of the coolant supply and facilitate the timely cleaning of the blocked filter screen.

[0031] In summary, the present invention has the following beneficial effects:

[0032] 1. The present invention arranges an upper cooling beam, a lower cooling beam, a cooling chamber, a liquid inlet pipe, a spray pipe, a plurality of rectangular array spray heads, a solenoid valve, a temperature measuring component, etc., and adjusts the switching times of the solenoid valve through the feedback result of the temperature sensor to control the spray frequency of the spray head and realize the control of the spray amount. Compared with the prior art of repeatedly adjusting the opening of the flow valve to adjust the nozzle flow, the present invention can extend the service life of the solenoid valve and ensure the control accuracy of the spray amount;

[0033] 2. The present invention provides a temperature measuring component including a temperature sensor, a temperature regulating component including a heating tube, a cooling tube, etc. Compared with the plate shape detection, the temperature detection of the roll group can more intuitively and accurately reflect the temperature condition of the roll group, which is convenient for better controlling the segmented cooling. The temperature of the coolant at different positions of the roll group can also be adjusted according to the temperature conditions at different positions of the roll group, effectively improving the segmented cooling effect;

[0034] 3. The present invention realizes the detachable installation between the spray pipe and the upper cooling beam / lower cooling beam by arranging structures such as a connecting ring, a mounting ring, a fixing hole, a fixing rod, a limiting rod, and a tension spring. The spray pipe, the temperature regulating assembly, and the three spray heads form a modular structure. The entire module can be quickly replaced by disassembling the spray pipe, thereby effectively improving the replacement efficiency and avoiding affecting the continuous operation of the entire device.

[0035] 4. The temperature measuring component and the cooling beam group in the present invention can move vertically and horizontally perpendicular to the axis of the rolling roller group, so that the temperature measuring position and temperature measuring distance of the temperature sensor for the upper rolling roller / lower rolling roller can be adjusted, and the spraying position and spraying distance of the spray head for the rolling roller group can be adjusted, so as to meet the use requirements under different production conditions and ensure its working effect, effectively improving the scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of a segmented cooling device for hot rolling of aluminum materials;

[0037] Figure 2 It is a partial structural schematic diagram of a segmented cooling device for hot rolling of aluminum materials;

[0038] Figure 3 It is a schematic diagram of the structure of a temperature regulating component in a segmented cooling device for hot rolling of aluminum materials;

[0039] Figure 4 The present invention is a schematic diagram of the structure of a liquid inlet pipe in a segmented cooling device for hot rolling of aluminum materials.

[0040] In the figure, 1, roller group; 11, upper roller; 12, lower roller; 2, cooling beam group; 21, upper cooling beam; 22, lower cooling beam; 23, adjustment seat; 24, mounting side plate; 25, cooling chamber; 26, unloading hole; 27, unloading valve; 28, pressure sensor; 29, total temperature sensor; 3, liquid inlet pipe; 31, liquid inlet branch pipe; 32, switching valve; 33, on-off valve; 34, filter; 35, flow sensor; 4, spray pipe; 41, solenoid valve; 42, connecting ring; 43, mounting ring; 44, fixing hole; 45, fixing rod ; 46. Limit rod; 47. Tension spring; 5. Sprinkler head; 6. Temperature measuring assembly; 61. Upper temperature measuring frame; 62. Lower temperature measuring frame; 63. Mounting seat; 64. Temperature sensor; 7. Control system; 8. Temperature regulating assembly; 81. Heating pipe; 811. Heating water inlet valve; 812. Heating water outlet valve; 82. Electric heating wire; 83. Insulation pipe; 84. Cooling pipe; 841. Cooling water inlet valve; 842. Cooling water outlet valve; 85. Cooling sleeve; 86. Circulating fan; 9. Liquid temperature sensor; 91. Heating sensor; 92. Cooling sensor. DETAILED DESCRIPTION

[0041] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0042] A sectional cooling device for hot rolling of aluminum materials, such as Figure 1 and Figure 2As shown, it includes a cooling beam group 2 arranged on the inlet side of the rolling mill group 1, the rolling mill group 1 includes an upper rolling mill 11 and a lower rolling mill 12 whose axes are horizontally perpendicular to the feeding direction and are correspondingly arranged up and down, the cooling beam group 2 includes an upper cooling beam 21 and a lower cooling beam 22 which are parallel to and correspond to the upper rolling mill 11 and the lower rolling mill 12 one by one, a cooling cavity 25 arranged along the length direction of the upper cooling beam 21 and the lower cooling beam 22 is provided in the upper cooling beam 21 and the lower cooling beam 22, and the cooling cavity 25 is connected to a liquid inlet pipe 3 for inputting cooling liquid, the other end of the liquid inlet pipe 3 is connected to a liquid supply device, and the two liquid inlet pipes 3 corresponding to the upper cooling beam 21 and the lower cooling beam 22 are connected to the same liquid supply device.

[0043] like Figure 1 and Figure 2 As shown, a plurality of spray pipes 4 connected to the corresponding cooling chamber 25 are arranged in an array along the length direction of the upper cooling beam 21 and the lower cooling beam 22 on the side close to the rolling group 1, and the plurality of spray pipes 4 on the upper cooling beam 21 and the lower cooling beam 22 correspond to each other. One end of each spray pipe 4 away from the cooling chamber 25 is connected to three rows of spray heads 5 arranged in sequence from top to bottom, that is, one spray pipe 4 supplies cooling liquid to the three upper and lower spray heads 5 at the same time. The three rows of spray heads 5 on the upper cooling beam 21 and the three rows of spray heads 5 on the lower cooling beam 22 are arranged in a rectangular array, and the spray ports of the spray heads 5 face the corresponding upper rolling rollers 11 and lower rolling rollers 12.

[0044] like Figure 1 and Figure 2 As shown, a temperature measuring assembly 6 is provided on the side of the roll group 1 away from the cooling beam group 2, and the temperature measuring assembly 6 includes an upper temperature measuring frame 61 and a lower temperature measuring frame 62 which correspond to and are parallel to the upper roll 11 and the lower roll 12. A plurality of temperature sensors 64 are provided along the length direction of the upper temperature measuring frame 61 and the lower temperature measuring frame 62 which are close to the roll group 1, and the plurality of temperature sensors 64 of the upper temperature measuring frame 61 correspond to the plurality of spray pipes 4 on the upper cooling beam 21, and the plurality of temperature sensors 64 on the lower temperature measuring frame 62 correspond to the plurality of spray pipes 4 on the lower cooling beam 22. In this embodiment, the temperature sensor 64 is preferably an infrared temperature sensor 64.

[0045] like Figure 1 and Figure 2 As shown, each spray pipe 4 is also provided with a solenoid valve 41 for controlling the opening and closing of the corresponding three spray heads 5, and the solenoid valve 41 is connected to the control system 7 for communication feedback. The temperature sensor 64 is connected to the solenoid valve 41 on the corresponding spray pipe 4 through the control system 7 for communication control, and the control system 7 controls the opening and closing times and opening and closing frequency of the corresponding solenoid valve 41 according to the feedback result of the temperature sensor 64. Among them, the segmented cooling control technology adopted by the control system 7 is the existing technology, which is only briefly illustrated in the figure and will not be described in detail.

[0046] In addition, if Figure 1 and Figure 2As shown, a total temperature sensor 29 is provided in the cooling chamber 25 of the upper cooling beam 21 and the lower cooling beam 22, and a temperature adjustment component 8 and a liquid temperature sensor 9 (marked in Figure 3 ), the total temperature sensor 29, the temperature sensor 64 and the liquid temperature sensor 9 are connected to the temperature control component 8 for communication feedback control via the control system 7. The control system 7 controls the temperature control component 8 to adjust the temperature of the coolant sprayed from the three spray heads 5 corresponding to each spray pipe 4 according to the feedback results of the total temperature sensor 29, the temperature sensor 64 and the liquid temperature sensor 9.

[0047] like Figure 1 and Figure 2 As shown, a plurality of spray pipes 4 and temperature sensors 64 correspond to the upper roller 11 and the lower roller 12, and the upper roller 11 and the lower roller 12 are divided into a plurality of different temperature zones. The temperature sensor 64 detects the temperature of the corresponding zone and feeds back the result to the control system 7. The control system 7 calculates the coolant temperature and flow rate required to reduce the temperature of the upper roller 11 / lower roller 12 in the zone to the set temperature according to the setting, and calculates the required coolant temperature according to the coolant temperature in the cooling chamber 25 fed back by the total temperature sensor 29, and controls the temperature regulating component 8 to cooperate with the liquid temperature sensor 9 (marked in Figure 3 (middle) adjust the temperature of the coolant sprayed from the three spray heads 5 connected to the corresponding spray pipes 4, control the opening and closing times and frequency of the solenoid valve 41 according to the single spraying amount of the spray head 5 and the required flow obtained by calculation, and adjust the flow rate of the coolant sprayed from the three spray heads 5.

[0048] like Figure 1 and Figure 2 As shown, the number of switching times of the electromagnetic valve 41 is adjusted by the feedback result of the temperature sensor 64 to control the injection frequency of the spray head 5 and realize the control of the injection amount. Compared with the prior art of repeatedly adjusting the opening of the flow valve to adjust the nozzle flow, the service life of the electromagnetic valve 41 can be extended and the control accuracy of the injection amount can be ensured. Compared with the plate shape detection, the temperature detection of the roll group 1 can more intuitively and accurately reflect the temperature of the roll group 1. It can also adjust the temperature of the coolant at different positions of the roll group 1 according to the temperature of different positions of the roll group 1, effectively improving the segmented cooling effect.

[0049] In this embodiment, if Figure 2As shown, in order to ensure that the coolant is sprayed on the roller surface in a concentrated manner, the three spray heads 5 corresponding to each spray pipe 4 spray and cover the corresponding upper roller 11 and lower roller 12 roller surface range of not less than 60°, ensuring the cooling coverage of the roller group 1. Among them, the spray coverage overlap area of ​​two adjacent spray heads 5 along the length direction of the roller group 1 is less than 10%, so as to avoid a large overlap rate of adjacent cooling areas resulting in a large temperature change after mixing of coolants of different temperatures, which may easily lead to poor cooling effects in two adjacent areas. In addition, the first row of spray heads 5 on the upper cooling beam 21 from top to bottom are tilted upward, and the second and third rows of spray heads 5 are tilted downward. The first and second rows of spray heads 5 on the lower cooling beam 22 from top to bottom are tilted upward, and the third row of spray heads 5 are tilted downward.

[0050] like Figure 1 and Figure 2 As shown, since the heat dissipation condition in the middle of the roll group 1 is not as good as that at the two ends, the temperature of the roll group 1 itself will gradually decrease from the middle to the two ends, and the temperature at the symmetrical positions at the two ends is basically the same. Therefore, the coolant temperature required at the middle position of the roll group 1 is the lowest, and the coolant temperature required towards the two ends gradually increases. Therefore, in this embodiment, the cooling temperature of the coolant sprayed from the middle row of spray heads 5 to the two side rows of spray heads 5 along the length direction of the upper cooling beam 21 gradually increases, and the temperature of the coolant sprayed from the two side spray heads 5 symmetrical to the middle row of spray heads 5 is consistent. In order to ensure the cooling effect of the same position of the roll group 1, the cooling temperature of the coolant sprayed by the three spray heads 5 corresponding to each spray pipe 4 is consistent to avoid the mixing of coolants of different temperatures affecting the cooling effect. The cooling temperature of the coolant sprayed by the six spray heads 5 corresponding to the upper and lower corresponding spray pipes 4 on the upper cooling beam 21 and the lower cooling beam 22 is consistent to ensure the cooling effect of the upper roll 11 and the lower roll 12 at the corresponding upper and lower positions is consistent, thereby ensuring the uniform rolling effect of the upper and lower surfaces of the aluminum strip.

[0051] like Figure 2 and Figure 3 As shown, in order to adjust the temperature of the coolant at different positions, the temperature regulating assembly 8 includes a heating pipe 81 and a cooling pipe 84 connected to the end of the spray pipe 4 away from the cooling chamber 25 and arranged in parallel, and the three spray heads 5 corresponding to the spray pipe 4 are all connected to the heating pipe 81 and the cooling pipe 84 at one end away from the spray pipe 4. The heating pipe 81 and the cooling pipe 84 are respectively provided with a heating water inlet valve 811 and a cooling water inlet valve 841 at one end close to the spray pipe 4, and a heating water outlet valve 812 and a cooling water outlet valve 842 at one end close to the spray head 5; the liquid temperature sensor 9 includes a heating sensor 91 arranged in the heating pipe 81 and a cooling sensor 92 arranged in the cooling pipe 84.

[0052] Specifically, Figure 3As shown, the heating tube 81 and the cooling tube 84 are both serpentine structures. The heating tube 81 is provided with an electric heating wire 82 and an insulation tube 83 wrapped around the electric heating wire 82, and the heating sensor 91 is connected to the electric heating wire 82 for communication and feedback. The cooling tube 84 is provided with a cooling sleeve 85, and a circulating fan 86 is connected between the two ends of the cooling sleeve 85, and the cooling sensor 92 is connected to the circulating fan 86 for communication and feedback.

[0053] like Figure 2 and Figure 3 As shown, when the temperature of the coolant in the cooling chamber 25 is higher than the required cooling temperature, the cooling water inlet valve 841 and the cooling water outlet valve 842 are opened, and the cooling sensor 92 feedback controls the circulation fan 86 to work according to the detected coolant temperature in the cooling pipe 84, so that the coolant in the cooling pipe 84 is cooled to the required temperature, and then sprayed out by the spray head 5. When the cooling temperature in the cooling chamber 25 is lower than the required cooling temperature, the heating water inlet valve 811 and the heating water outlet valve 812 are opened, and the heating sensor 91 feedback controls the electric heating wire 82 to work according to the detected coolant temperature in the heating pipe 81, so that the coolant in the heating pipe 81 is heated to the required temperature, and then sprayed out by the spray head 5. Among them, the heat insulation tube 83 protects the electric heating wire 82 while reducing heat loss, thereby ensuring the heating efficiency of the coolant. The heating pipe 81 and the cooling pipe 84 have no serpentine structure, which can increase the travel of the coolant in the heating pipe 81 and the cooling pipe 84 to ensure sufficient heating or cooling time for the coolant.

[0054] In this embodiment, if Figure 2 and Figure 3 As shown, the spray pipe 4, the temperature adjustment component 8 and the three spray heads 5 form a modular structure, and the spray pipe 4 is detachably connected to the corresponding upper cooling beam 21 / lower cooling beam 22. When replacing and repairing, only the spray pipe 4 needs to be disassembled to carry out modular disassembly and replacement, which effectively improves the replacement efficiency and avoids affecting the continuous operation of the entire device. Specifically, a connecting ring 42 is provided at one end of the spray pipe 4 close to the corresponding upper cooling beam 21 / lower cooling beam 22, and a mounting ring 43 that cooperates with the connecting ring 42 is provided on the side wall of the upper cooling beam 21 / lower cooling beam 22, and the connecting ring 42 is detachably sealed and connected with the mounting ring 43. The outer wall of the connecting ring 42 is symmetrically provided with fixing holes 44 arranged along the axis thereof in the radial direction, and the side wall of the mounting ring 43 is provided with a fixing rod 45 that cooperates with the corresponding fixing hole 44, and the end of the fixing rod 45 away from the fixing hole 44 is connected to a limiting rod 46 that is horizontally and vertically connected to it to form an L-shaped structure, and a tension spring 47 is connected between the ends of the two limiting rods 46 away from the corresponding fixing rod 45.

[0055] like Figure 2 and Figure 3As shown, after the connection ring 42 is sealed and connected with the mounting ring 43, under the action of the tension spring 47, the fixing rod 45 is tightly inserted into the fixing hole 44, so that the spray pipe 4 and the upper cooling beam 21 / lower cooling beam 22 can be detachably installed, and the axis of the fixing hole 44 is horizontally perpendicular to the axis of the mounting ring 43, which effectively ensures the tightness of the connection between the spray pipe 4 and the upper cooling beam 21 / lower cooling beam 22, and avoids loosening between the connection ring 42 and the mounting ring 43 under the high pressure of the coolant. When replacement and maintenance are required, it is only necessary to drive the two limit rods 46 away from each other to overcome the tension of the tension spring 47, and pull the fixing rod 45 out of the fixing hole 44, so that the spray pipe 4 can be modularly disassembled and replaced.

[0056] like Figure 1 and Figure 2 As shown, in order to ensure the safety of the segmented cooling work, unloading holes 26 connected to the corresponding cooling chamber 25 are respectively provided near both ends of the upper cooling beam 21 and the lower cooling beam 22, and unloading valves 27 are installed at the unloading holes 26. The cooling chamber 25 is connected to a pressure sensor 28 that is connected to the corresponding unloading valve 27 for communication feedback control. The pressure sensor 28 detects the pressure of the coolant in the cooling chamber 25 in real time, and timely communicates and feedbacks to control the unloading valve 27 to open the unloading hole 26 to unload the cooling chamber 25, ensuring the stability of the coolant supply pressure, avoiding problems such as excessive pressure causing the solenoid valve 41 to malfunction, and ensuring the normal operation and safety of the segmented cooling work. Among them, in this embodiment, the coolant pressure in the cooling chamber 25 is ≤5kg / cm 2 .

[0057] like Figure 1 and Figure 4 As shown, in order to prevent the coolant from containing a lot of impurities and clogging the spray head 5, the coolant inputted is filtered at the liquid inlet pipe 3. Specifically, one end of the liquid inlet pipe 3 close to the cooling chamber 25 is connected with two parallel liquid inlet branches 31, and a switching valve 32 is provided at the connection point between the liquid inlet pipe 3 and the two liquid inlet branches 31, and both ends of each liquid inlet branch 31 are provided with an on-off valve 33 for controlling its opening and closing; each liquid inlet branch 31 is provided with a filter screen 34, and the liquid inlet branch 31 is also connected to a flow sensor 35 located on the side of the filter screen 34 close to the cooling chamber 25, and the flow sensor 35 is connected to the switching valve 32 and the corresponding on-off valve 33 for communication feedback control.

[0058] like Figure 1 and Figure 4As shown, the two liquid inlet branches 31 are controlled to work alternately by the switching valve 32 and the on-off valve 33, and the filter 34 filters the coolant entering the cooling chamber 25 to ensure the cleanliness of the coolant, avoid the blockage of the spray head 5 affecting the segmented cooling effect, or prevent impurities from being sprayed onto the roll group 1 affecting the rolling effect. Among them, when the flow sensor 35 detects that the input flow becomes smaller, it means that the filter 34 is blocked, and the communication feedback control switching valve 32 and the on-off valve 33 switch the operation of the two liquid inlet branches 31 to ensure the continuity of the coolant supply and facilitate timely cleaning of the blocked filter 34.

[0059] In order to further improve the application scope of this device, Figure 1 and Figure 2 As shown, a position adjustment seat 23 is provided between the ends of the upper temperature measuring frame 61 and the lower temperature measuring frame 62 on the same side, and the position adjustment seat 23 is horizontally slidably installed at both ends of the roll group 1 along a direction perpendicular to the length of the roll group 1, and the ends of the upper temperature measuring frame 61 and the lower temperature measuring frame 62 are vertically slidably installed on the corresponding position adjustment seat 23. At the same time, both ends of the upper cooling beam 21 and the lower cooling beam 22 are provided with vertically arranged mounting side plates 24, and mounting seats 63 are provided between the mounting side plates 24 at the same end and are vertically slidably installed on both sides of the mounting seats 63, respectively, and the mounting seats 63 are horizontally slidably installed at both ends of the roll group 1 along a direction perpendicular to the length of the roll group 1. Among them, in this embodiment, the vertical sliding of the upper temperature measuring frame 61 and the lower temperature measuring frame 62, the vertical sliding of the mounting side plate 24, and the horizontal sliding of the adjustment seat 23 and the mounting seat 63 are all driven by the telescopic cylinder, and the adjustment seat 23 and the mounting seat 63 are both located outside the two ends of the roll group 1. A corresponding protective structure is arranged outside the telescopic cylinder to reduce the influence of the splashing of the coolant on the telescopic cylinder, which is only briefly illustrated in the figure.

[0060] like Figure 1 and Figure 2 As shown, the upper temperature measuring frame 61 and the lower temperature measuring frame 62 are vertically slidably mounted on the adjustment seat 23, and the temperature measuring position of the temperature sensor 64 on the upper roller 11 / lower roller 12 can be adjusted. The adjustment seat 23 is horizontally slidably mounted on both ends of the roller group 1 along a direction perpendicular to the length of the roller group 1, and the temperature measuring distance of the temperature sensor 64 on the upper roller 11 / lower roller 12 can be adjusted. At the same time, the upper cooling beam 21 and the lower cooling beam 22 are vertically slidably mounted on the mounting seat 63 through the mounting side plate 24, and the distance between the upper cooling beam 21 and the lower cooling beam 22 can be adjusted according to the thickness of the aluminum strip, the degree of roller wear, etc., and the distance between the upper cooling beam 21 and the lower cooling beam 22 and the roller group 1 can be adjusted by sliding the mounting seat 63 horizontally perpendicular to the length of the roller group 1, so as to adjust the spraying position and spraying distance of the spray head 5 on the roller group 1, so as to meet the use requirements under different production conditions and ensure its working effect, and effectively improve the scope of application.

[0061] Working principle and use method of the present invention:

[0062] A plurality of spray pipes 4 and temperature sensors 64 correspond to the partitions of the upper roller 11 and the lower roller 12, and the upper roller 11 and the lower roller 12 are divided into a plurality of different temperature zones. The temperature sensor 64 detects the temperature of the corresponding area and feeds back the result to the control system 7. The control system 7 calculates the coolant temperature and flow rate required to reduce the temperature of the upper roller 11 / lower roller 12 in this area to the set temperature according to the setting, and calculates the required coolant temperature according to the coolant temperature in the cooling chamber 25 fed back by the total temperature sensor 29. The temperature regulating component 8 is controlled to cooperate with the liquid temperature sensor 9 to adjust the coolant temperature sprayed from the three spray heads 5 connected to the corresponding spray pipe 4. According to the single spraying amount of the spray head 5 and the calculated required flow rate, the opening and closing times and opening and closing frequency of the solenoid valve 41 are controlled to adjust the coolant flow rate sprayed from the three spray heads 5.

[0063] The above description shows and describes the preferred embodiments of the present invention. As mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A sectional cooling device for hot rolling of aluminum materials, characterized in that: The invention comprises a cooling beam group (2) arranged on the inlet side of a rolling roller group (1), wherein the rolling roller group (1) comprises an upper rolling roller (11) and a lower rolling roller (12) whose axes are horizontal and perpendicular to the feeding direction and which are arranged correspondingly up and down, and the cooling beam group (2) comprises an upper cooling beam (21) and a lower cooling beam (22) which correspond to the upper rolling roller (11) and the lower rolling roller (12) one by one and are parallel, and the upper cooling beam (21) and the lower cooling beam (22) are provided with cooling cavities (25) arranged along their length directions, and the cooling cavities (25) are connected to a liquid inlet pipe (3), and the other end of the liquid inlet pipe (3) is connected to a liquid supply device; A plurality of spray pipes (4) connected to the corresponding cooling chambers (25) are arranged in an array along the length direction of the upper cooling beam (21) and the lower cooling beam (22) on one side close to the rolling roller group (1), and the plurality of spray pipes (4) on the upper cooling beam (21) and the lower cooling beam (22) correspond to each other from top to bottom; one end of each spray pipe (4) away from the cooling chamber (25) is connected to three rows of spray heads (5) arranged in sequence from top to bottom, and the three rows of spray heads (5) on the upper cooling beam (21) and the three rows of spray heads (5) on the lower cooling beam (22) are arranged in a rectangular array, and the spray ports of the spray heads (5) face the corresponding upper rolling rollers (11) and lower rolling rollers (12); A temperature measuring assembly (6) is provided on a side of the rolling roller group (1) away from the cooling beam group (2), and the temperature measuring assembly (6) comprises an upper temperature measuring frame (61) and a lower temperature measuring frame (62) which correspond to and are parallel to the upper rolling roller (11) and the lower rolling roller (12) in a one-to-one manner, and a plurality of temperature sensors (64) are provided on a side of the upper temperature measuring frame (61) and the lower temperature measuring frame (62) close to the rolling roller group (1) along their length direction, and the plurality of temperature sensors (64) of the upper temperature measuring frame (61) correspond to the plurality of spray pipes (4) on the upper cooling beam (21) in a one-to-one manner, and the plurality of temperature sensors (64) on the lower temperature measuring frame (62) correspond to the plurality of spray pipes (4) on the lower cooling beam (22) in a one-to-one manner; Each of the spray pipes (4) is provided with a solenoid valve (41) for controlling the opening and closing of the corresponding three spray heads (5); the solenoid valve (41) is connected to the control system (7) for communication feedback; the temperature sensor (64) is connected to the solenoid valve (41) on the corresponding spray pipe (4) for communication control via the control system (7); the control system (7) controls the number of opening and closing times and the opening and closing frequency of the corresponding solenoid valve (41) according to the feedback result of the temperature sensor (64); A total temperature sensor (29) is provided in the cooling chamber (25) of the upper cooling beam (21) and the lower cooling beam (22); a temperature adjustment component (8) and a liquid temperature sensor (9) are also connected between each of the spray pipes (4) and the corresponding three spray heads (5); the total temperature sensor (29), the temperature sensor (64) and the liquid temperature sensor (9) are connected to the temperature adjustment component (8) for communication feedback control via a control system (7); the control system (7) controls the temperature adjustment component (8) to adjust the temperature of the coolant sprayed from the three spray heads (5) corresponding to each spray pipe (4) according to the feedback results of the total temperature sensor (29), the temperature sensor (64) and the liquid temperature sensor (9).

2. The segmented cooling device for hot rolling of aluminum materials according to claim 1, characterized in that: The three spray heads (5) corresponding to each spray pipe (4) spray and cover the roller surfaces of the corresponding upper roller (11) and lower roller (12) by no less than 60°, and the spray coverage overlap area of ​​two adjacent spray heads (5) along the length direction of the roller group (1) is less than 10%.

3. The segmented cooling device for hot rolling of aluminum materials according to claim 2, characterized in that: The cooling temperature of the coolant sprayed by the three spray heads (5) corresponding to each of the spray pipes (4) is consistent, and the cooling temperature of the coolant sprayed by the six spray heads (5) corresponding to the spray pipes (4) corresponding to the upper and lower parts of the upper cooling beam (21) and the lower cooling beam (22) is consistent; the cooling temperature of the coolant sprayed from the middle row of spray heads (5) to the two side row of spray heads (5) along the length direction of the upper cooling beam (21) gradually increases, and the temperature of the coolant sprayed by the two side spray heads (5) symmetrical with respect to the middle row of spray heads (5) is consistent.

4. The segmented cooling device for hot rolling of aluminum materials according to claim 1, characterized in that: The temperature control component (8) comprises a heating pipe (81) and a cooling pipe (84) connected to one end of the spray pipe (4) away from the cooling chamber (25) and arranged in parallel; the three spray heads (5) corresponding to the spray pipe (4) are all in communication with one end of the heating pipe (81) and the cooling pipe (84) away from the spray pipe (4); a heating water inlet valve (811) and a cooling water inlet valve (841) are respectively provided at one end of the heating pipe (81) and the cooling pipe (84) close to the spray pipe (4); a heating water outlet valve (812) and a cooling water outlet valve (842) are respectively provided at one end of the heating pipe (81) and the cooling pipe (84) close to the spray head (5); the liquid temperature sensor (9) comprises a heating sensor (91) arranged in the heating pipe (81) and a cooling sensor (92) arranged in the cooling pipe (84).

5. The segmented cooling device for hot rolling of aluminum materials according to claim 4, characterized in that: The heating tube (81) and the cooling tube (84) are both serpentine structures. The heating tube (81) is wound around an electric heating wire (82) and a heat-insulating tube (83) wrapped around the electric heating wire (82). The heating sensor (91) and the electric heating wire (82) are connected for communication feedback. The cooling tube (84) is wound around a cooling sleeve (85). A circulating fan (86) is connected between the two ends of the cooling sleeve (85). The cooling sensor (92) and the circulating fan (86) are connected for communication feedback.

6. A sectional cooling device for hot rolling of aluminum materials according to any one of claims 1 to 5, characterized in that: A connecting ring (42) is provided at one end of the spray pipe (4) close to the corresponding upper cooling beam (21) / lower cooling beam (22); a mounting ring (43) cooperating with the connecting ring (42) is provided on the side wall of the upper cooling beam (21) / lower cooling beam (22); the outer wall of the connecting ring (42) is symmetrically provided with fixing holes (44) arranged along its axis in a radial direction; a fixing rod (45) cooperating with the corresponding fixing hole (44) is provided on the side wall of the mounting ring (43); an end of the fixing rod (45) away from the fixing hole (44) is connected to a limiting rod (46) which is horizontally and vertically connected to the fixing rod (45) to form an L-shaped structure; a tensioning spring (47) is connected between the ends of the two limiting rods (46) away from the corresponding fixing rods (45).

7. A sectional cooling device for hot rolling of aluminum materials according to any one of claims 1 to 5, characterized in that: A positioning seat (23) is provided between the ends of the upper temperature measuring frame (61) and the lower temperature measuring frame (62) located on the same side. The positioning seat (23) is horizontally slidably mounted on the two ends of the rolling group (1) along a direction perpendicular to the length of the rolling group (1), and the ends of the upper temperature measuring frame (61) and the lower temperature measuring frame (62) are vertically slidably mounted on the corresponding positioning seats (23).

8. A sectional cooling device for hot rolling of aluminum materials according to any one of claims 1 to 5, characterized in that: Both ends of the upper cooling beam (21) and the lower cooling beam (22) are provided with vertically arranged mounting side plates (24); a mounting seat (63) is provided between the mounting side plates (24) at the same end and is vertically slidably mounted on both sides of the mounting seat (63); the mounting seat (63) is horizontally slidably mounted on both ends of the rolling mill group (1) along a direction perpendicular to the length of the rolling mill group (1).

9. The segmented cooling device for hot rolling of aluminum materials according to claim 1, characterized in that: The upper cooling beam (21) and the lower cooling beam (22) are each provided with a unloading hole (26) connected to the corresponding cooling cavity (25) near both ends thereof, and an unloading valve (27) is installed at the unloading hole (26). The cooling cavity (25) is connected to a pressure sensor (28) which is connected to the corresponding unloading valve (27) for communication feedback control.

10. The segmented cooling device for hot rolling of aluminum materials according to claim 1, characterized in that: One end of the liquid inlet pipe (3) close to the cooling chamber (25) is connected to two liquid inlet branches (31) arranged in parallel, and a switching valve (32) is provided at the connection point between the liquid inlet pipe (3) and the two liquid inlet branches (31), and both ends of each of the liquid inlet branches (31) are provided with an on-off valve (33) for controlling the opening and closing thereof; each of the liquid inlet branches (31) is provided with a filter screen (34), and the liquid inlet branch pipe (31) is also connected to a flow sensor (35) located on a side of the filter screen (34) close to the cooling chamber (25), and the flow sensor (35) is connected to the switching valve (32) and the corresponding on-off valve (33) for communication feedback control.

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