Water-cooling deviation rectifying device of thermal annealing and pickling annealing furnace
By combining cylinder-driven guide rollers, photoelectric sensors, and laser array leveling instruments with fuzzy PID control algorithms, the lag problem of mechanical correction devices was solved, achieving precise correction and uniform cooling of stainless steel strips, thus improving production efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-03-27
AI Technical Summary
Existing mechanical alignment devices cannot respond promptly to the dynamic deviation of the strip, resulting in uneven cooling and equipment wear, which affects production efficiency and product quality.
The strip correction component, which uses cylinder-driven guide rollers, photoelectric sensors, and a high-precision laser array leveling instrument, achieves precise strip correction. Combined with a fuzzy PID control algorithm, it can quickly respond to changes in the strip's position. Furthermore, the air-cooled section exhaust fan and return water collection system improve the production environment and resource utilization.
It enables precise deviation correction of strip steel in the water-cooling section, reduces equipment wear, improves cooling uniformity and production efficiency, reduces resource consumption and environmental pollution, and improves product quality.
Smart Images
Figure CN224047475U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to stainless steel strip steel processing technical field, concretely relates to a kind of hot annealing pickling annealing furnace water cooling deviation rectifying device. BACKGROUND
[0002] In modern steel processing industry, the production process of stainless steel strip steel is continuously developed towards high precision and high performance, and the water cooling section of annealing furnace has a decisive influence on the metallographic structure and mechanical properties of the strip steel as the key link of the hot annealing pickling production line of stainless steel strip steel. In this link, the strip steel needs to go through a rapid cooling process to achieve the expected physical properties and meet the strict requirements of downstream industries for the quality of stainless steel strip steel.
[0003] The existing strip steel may have edge wave, middle wave and other defects before entering the water cooling section, which is affected by the upstream rolling process. These poor plate shape problems will change the stress distribution of the strip steel during operation, and the strip steel is prone to deviation in the water cooling section. At the same time, the cooling conditions of the water cooling section itself can also cause deviation. Unreasonable layout of cooling nozzles, partial nozzle blockage or unstable water pressure can lead to uneven cooling of the strip steel, and the thermal expansion and contraction of different parts are inconsistent, further exacerbating the deviation trend of the strip steel. The deviated strip steel will scratch the box in the water cooling section, which can easily damage the equipment. Frequent friction between the strip steel and the inner wall of the water cooling section box and the cooling nozzle can accelerate the wear of these components. Once the cooling nozzle is damaged, the spray angle and flow of the cooling water will deviate, further deteriorating the cooling effect. In order to avoid the deviation of the strip steel, a mechanical deviation rectifying device is generally arranged on the water cooling section to rectify the position and angle of the strip steel. However, the mechanical deviation rectifying device has a relatively simple structure, and only adjusts the position or angle of the guide roller to correct the deviated strip steel. However, due to its dependence on manual operation or simple control system, it cannot respond to the dynamic deviation of the strip steel in time, so that the lag of the mechanical deviation rectifying device greatly reduces its deviation rectifying effect. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a kind of hot annealing pickling annealing furnace water cooling deviation rectifying device to solve the problems raised in the above background technology.
[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of hot annealing pickling annealing furnace water cooling deviation rectifying device, comprising:
[0006] The base is connected with a base plate at the top, the top of the base plate is fixed with a fixing support through bolt screwing, the top of the fixing support is provided with a deviation correcting assembly for correcting deviation of the stainless steel strip during cooling, the deviation correcting assembly comprises air cylinders, the air cylinders are provided in two groups and are arranged at the top of the two sides of the fixing support respectively, the piston rods of the air cylinders are movably penetrated through the fixing support and are connected with roller frames, a plurality of guide rollers are rotatably connected in the roller frames through bearings;
[0007] An air cooling section exhaust fan is arranged at one end of the top of the base plate and is used for drawing away waste gas and dust pollutants generated during cooling of the stainless steel strip.
[0008] Preferably, an air cooling section chimney is arranged at one end of the base plate, and an air outlet of the air cooling section exhaust fan is connected with the air cooling section chimney.
[0009] Preferably, spray pipes are arranged in the fixing support and at the top and bottom of the guide rollers, and a plurality of spray heads are uniformly arranged on the spray pipes.
[0010] Preferably, a cooling water inlet pipe is arranged on the base plate, a plurality of branch pipes are connected with the cooling water inlet pipe, and one end of each of the branch pipes is connected with a spray pipe.
[0011] Preferably, a backwater collecting hopper is connected in the fixing support, and a backwater pipe is connected with the bottom of the backwater collecting hopper.
[0012] Preferably, a photoelectric sensor is arranged in the top of the fixing support.
[0013] Compared with the prior art, the device has the following beneficial effects:
[0014] (1) The device realizes accurate deviation correction through the deviation correcting assembly, two groups of air cylinders are arranged at the top of the two sides of the fixing support, the positions of the guide rollers in the roller frames can be flexibly controlled, when the strip deviates due to poor plate shape or uneven cooling in the water cooling section, the air cylinders act quickly to push the guide rollers to correct the strip, the positions of the strip are detected through cooperation of the photoelectric sensor and the high-precision laser array flatness detector, the dynamic deviation of the strip can be responded in time, the deviation correction effect is better, and accurate deviation correction ensures position stability of the strip during the cooling process.
[0015] (2) The air cooling section exhaust fan is arranged at one end of the top of the base plate, and is used for drawing away waste gas and dust pollutants generated during cooling of the stainless steel strip, when the strip is cooled, if the waste gas and dust are not discharged in time, the waste gas and dust will accumulate in the water cooling section, not only polluting the surface of the strip, but also affecting product quality, the air cooling section exhaust fan discharges the waste gas and dust into the air cooling section chimney connected therewith through the air outlet, and then discharges the waste gas and dust out of the workshop, thereby effectively improving the production environment.
[0016] (3) The design of the backwater collecting hopper and the backwater pipe realizes the recycling of the cooling water, the water after spraying the strip steel is collected in the backwater collecting hopper and is collected through the backwater pipe, and can be used again after subsequent treatment, which not only saves water resources, but also reduces the production cost. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is a structural schematic view of the utility model.
[0018] In the figure: 1, stand; 2, base plate; 3, fixed support; 4, air cylinder; 5, roller frame; 6, guide roller; 7, air cooling section exhaust fan; 8, air cooling section chimney; 9, spray pipe; 10, spray head; 11, cooling water inlet pipe; 12, branch pipe; 13, backwater collecting hopper; 14, backwater pipe; 15, photoelectric sensor. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0020] The utility model provides a kind of hot annealing pickling annealing furnace water cooling deviation rectifying device as Figure 1 As shown in the figure, including:
[0021] The stand 1 is connected with the base plate 2 at the top, the base plate 2 is fixed with the fixed support 3 at the top by bolt screwing, the fixed support 3 is provided with deviation rectifying assembly for rectifying deviation of stainless steel strip steel during cooling at the top of both sides, the deviation rectifying assembly includes air cylinder 4, the air cylinder 4 is provided with two groups and is respectively arranged at the top of both sides of fixed support 3, the piston rod of air cylinder 4 is movably penetrated through fixed support 3 and connected with roller frame 5, a plurality of guide rollers 6 are rotatably connected in roller frame 5 by bearing, guide roller 6 is designed with low friction coefficient of nitrided silicon ceramic coating material and gradually changing convexity roll surface, and is suitable for strip steel of different thickness (0.5-6mm), width (1200-1800mm) and strength level (300-1200MPa), and will not scratch the surface of strip steel.
[0022] The air cooling section exhaust fan 7 is arranged at one end of the top of the base plate 2, for extracting waste gas and dust pollutants generated during the cooling process of stainless steel strip steel.
[0023] One end of the base plate 2 is provided with air cooling section chimney 8, and the air outlet of the air cooling section exhaust fan 7 is connected with the air cooling section chimney 8.
[0024] The fixed support 3 and at the top and bottom of the guide roller 6 are provided with spray pipes 9, and the spray pipes 9 are uniformly provided with a plurality of spray heads 10, which can spray cooling water at a certain angle and pressure on the surface of the strip steel, and the spray heads 10 can form fine and uniform water flow to ensure that each part of the strip steel can be fully cooled.
[0025] The substrate 2 is provided with a cooling water inlet pipe 11, and a plurality of branch pipes 12 are connected to the cooling water inlet pipe 11.
[0026] The fixed support 3 is connected with a water collecting hopper 13, and the bottom of the water collecting hopper 13 is connected with a water return pipe 14. The sprayed water drops downward under the action of gravity and falls into the water collecting hopper 13 in the fixed support 3. The collected water is transported out through the water return pipe 14, which is connected to the water treatment system in the workshop.
[0027] The fixed support 3 is provided with a photoelectric sensor 15 at the top.
[0028] The water cooling deviation rectification device of the hot annealing pickling annealing furnace can monitor the position of the strip steel at all times when the strip steel is cooled in the water cooling section. Based on the photoelectric sensing principle, once the strip steel deviates, the photoelectric sensor 15 can sensitively capture the change of the position of the edge of the strip steel and quickly convert the change into an electrical signal to transmit to the control system of the water cooling section (not shown in the figure). This fast response mechanism ensures that the system can timely detect the problem at the initial stage of the deviation of the strip steel, which can gain valuable time for the subsequent deviation rectification action and prevent the deviation from worsening. At the same time, the high-precision laser array level gauge (not shown in the figure) in the fixed support is also continuously working. It emits a laser beam to the strip steel with a detection accuracy of ±0.5 mm. By analyzing the time and angle of the laser reflection, the position information of each point on the surface of the strip steel is accurately calculated to comprehensively and meticulously monitor the edge and surface condition of the strip steel. When the strip steel deviates, the laser array level gauge also transmits the accurate position data to the control system in real time. After the control system receives the data transmitted by the photoelectric sensor 15 and the laser array level gauge, the fuzzy PID control algorithm starts to work. This algorithm combines the advantages of fuzzy logic and PID control. It first fuzzifies the parameters such as deviation and deviation speed and converts them into fuzzy language variables such as "large", "medium" and "small". Then, according to the pre-set fuzzy rules, the corresponding control output is inferred. For example, when the deviation of the strip steel is small, the algorithm will slightly adjust the guide roller. When the deviation is large, the adjustment will be increased to ensure that the strip steel can quickly return to the correct position, so that the deviation rectification process is more accurate and stable.
[0029] During the whole process, the control system can start the correction program at the initial stage of the strip deviation due to the fast response of the photoelectric sensor 15, and the accurate data provided by the high-precision laser array level gauge provides strong support for the dynamic adjustment of the intelligent guide roller module. Finally, real-time correction is realized, the response time is ≤100 ms, and the deviation can be controlled within ±2 mm, effectively avoiding the problems of uneven cooling, equipment damage and other problems caused by strip deviation, ensuring the stable operation of the production line and improving the product quality and production efficiency.
[0030] The control system of the water cooling section sends instructions to the air cylinders 4 in the correction assembly according to the strip deviation signals from the photoelectric sensor 15 and the high-precision laser array level gauge according to the preset control algorithm. The two groups of air cylinders 4 are located on the top of the fixed support 3 on both sides. After receiving the instructions, the piston rod of the air cylinder 4 extends or retracts according to the deviation direction and degree. If the strip deviates to the left, the piston rod of the left air cylinder 4 extends, and the piston rod of the right air cylinder 4 retracts, pushing the roller frame 5 to move to the left, so that the guide roller 6 in the roller frame 5 applies a right lateral force to the strip. Conversely, if the strip deviates to the right, the right air cylinder 4 acts, and the left air cylinder 4 cooperates to make the guide roller 6 apply a left lateral force to the strip. In this way, the guide roller 6 pushes the deviated strip back to the correct running track, achieving accurate correction of the strip;
[0031] The strip conveyed by the conveying plate enters between the two groups of spray pipes 9, and the cooling water flows from the cooling water inlet pipe 11. The cooling water inlet pipe 11 is connected to the cooling water source in the workshop to ensure stable cooling water supply. The cooling water is evenly distributed to the spray pipes 9 located at the top and bottom of the guide roller 6 in the fixed support 3 through a plurality of branch pipes 12. The evenly distributed spray heads 10 on the spray pipes 9 spray cooling water at a certain angle and pressure on the surface of the strip. The spray heads 10 can form fine and uniform water flow to ensure that each part of the strip is fully cooled. The sprayed water drips downward under the action of gravity and falls into the water collection hopper 13 in the fixed support 3. The collected water is conveyed out through the water return pipe 14, which is connected to the water treatment system in the workshop. In the water treatment system, the return water is treated through filtration, purification and other processes, and then returns to the cooling water inlet pipe 11, realizing the recycling of the cooling water.
[0032] In the cooling process of the strip steel, a large amount of heat is generated, and at the same time, pollutants such as waste gas and dust generated in the production process can be accompanied. At this time, the air cooling section exhaust fan 7 is continuously running, and the impeller rotates at high speed, forming a negative pressure in the fan. Under the action of the negative pressure, the waste gas and dust in the water cooling section are sucked into the fan. The sucked waste gas and dust are discharged through the air outlet of the air cooling section exhaust fan 7 and into the air cooling section chimney 8 connected thereto. The air cooling section chimney 8 can ensure that the pollutants can be smoothly discharged to the outside of the workshop, avoiding affecting the production environment and the health of the personnel in the workshop.
[0033] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of protection of the present application.
Claims
1. A water cooling deviation rectifying device of a heat annealing pickling annealing furnace, characterized by, Include: The pedestal (1) is connected with the base plate (2) on top, the base plate (2) is fixed with the fixed support (3) on top by bolt screwing, the fixed support (3) is provided with deviation correction assembly on both sides of the top for correcting the deviation of stainless steel strip when cooling, the deviation correction assembly includes air cylinder (4), the air cylinder (4) is provided with two groups and is respectively arranged on both sides of the top of the fixed support (3), the piston rod of the air cylinder (4) is movably penetrated through the fixed support (3) and connected with the roller frame (5), the roller frame (5) is rotatably connected with a plurality of guide rollers (6) in the roller frame (5) through bearings. The air cooling section exhaust fan (7) is arranged on one end of the top of the base plate (2), which is used for removing the waste gas and dust pollutants generated in the cooling process of the stainless steel strip.
2. The water cooling deviation rectifying device of the heat annealing and pickling annealing furnace according to claim 1, characterized in that: The base plate (2) is provided with an air cooling section chimney (8) on one end, and the air outlet of the air cooling section exhaust fan (7) is connected with the air cooling section chimney (8).
3. The water cooling deviation rectifying device of the heat annealing and pickling annealing furnace according to claim 1, characterized in that: The fixed support (3) is provided with a spray pipe (9) on the top and the bottom of the guide roller (6), and a plurality of spray heads (10) are uniformly distributed on the spray pipe (9).
4. The water cooling deviation rectifying device of the heat annealing and pickling annealing furnace according to claim 3, characterized in that: The base plate (2) is provided with a cooling water inlet pipe (11), and a plurality of branch pipes (12) are connected with the cooling water inlet pipe (11), one end of the branch pipe (12) is connected with the spray pipe (9).
5. The water cooling deviation rectifying device of the heat annealing and pickling annealing furnace according to claim 1, characterized in that: The fixed support (3) is connected with a backwater collecting hopper (13), and the bottom of the backwater collecting hopper (13) is connected with a backwater pipe (14).
6. The water cooling deviation rectifying device of the heat annealing and pickling annealing furnace according to claim 1, characterized in that: The fixed support (3) is provided with a photoelectric sensor (15) on the top.