Intelligent air cooling equipment for stainless steel continuous production and energy-saving boiler thereof

Abstract

The invention discloses intelligent air cooling equipment for stainless steel continuous production and an energy-saving boiler of the intelligent air cooling equipment, and belongs to the field of energy-saving boilers. Comprising a furnace body, a circulating cold spraying assembly, an adjustable assembly arranged at a flow equalizing air spraying box and an adjusting driving mechanism penetrating through the furnace wall. The adjustable assembly comprises a gas distribution outer pipe and an inner sleeve rotationally arranged in the gas distribution outer pipe, and array through nozzles are arranged on the inner sleeve; and the adjusting driving mechanism is used for driving the inner sleeve to rotate relative to the gas distribution outer pipe. According to the intelligent air cooling equipment for stainless steel continuous production and the energy-saving boiler of the intelligent air cooling equipment, the inner sleeve is driven to rotate so as to change the communication state of the array through nozzles and the gas distribution outer pipe, so that the airflow spraying coverage width is adjusted on line, matching with the width of strip steel is achieved, and energy consumption waste and edge plate shape defects are avoided; and meanwhile, the built-in scraping plate and the cleaning scraping strip are driven to synchronously scrape away carbon deposits on the pipe wall and the nozzle through rotation adjusting action, waste materials are guided to the collecting tank box to be discharged, and the defect of blockage caused by circulating hot air is overcome.

Description

Technical Field

[0001] This invention relates to the field of energy-saving boiler technology, and in particular to an intelligent air-cooled device for continuous stainless steel production and its energy-saving boiler. Background Technology

[0002] In the continuous production of stainless steel strip, bright annealing is a key process that determines the surface quality and mechanical properties of the product. To reduce energy consumption and improve thermal efficiency, modern annealing production lines are typically equipped with energy-saving boiler systems. These systems operate within a sealed furnace filled with a protective atmosphere such as nitrogen. Their working principle usually involves using a circulating fan to extract high-temperature gas from the cooling zone. After heat recovery and cooling through the tubular heat exchanger built into the energy-saving boiler or an external heat exchange device, the cooled gas is then sprayed at high speed onto the surface of the high-temperature strip steel through a blower box and nozzles, thereby achieving rapid cooling of the strip steel and the recycling of thermal energy.

[0003] However, existing air-cooled equipment and its supporting energy-saving boiler systems suffer from a technical problem in actual operation: the spray coverage area cannot be adjusted to match the width of the strip. Specifically, because existing air-spraying devices use a fixed-width nozzle array, they are difficult to adapt to the switching between wide and narrow strip specifications in the continuous production of stainless steel strips. When producing narrow strips, the nozzles located outside the edges of the strip remain fully open, resulting in the ineffective spraying of high-pressure cold air recovered and cooled by the energy-saving boiler system. This structural defect not only causes unnecessary dissipation of fan power and cooling capacity, reducing the overall energy efficiency of the energy-saving boiler system, but also leads to excessively rapid cooling at the strip edges due to the inability to shield edge airflow, thereby inducing strip shape defects such as edge waviness.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0005] This invention provides an intelligent air-cooled device and its energy-saving boiler for continuous stainless steel production, in order to solve the technical problem that the spray coverage range of existing air-cooled devices and their supporting energy-saving boiler systems is difficult to match and adjust with the width of the strip steel during actual operation.

[0006] This invention adopts the following technical solution: an intelligent air-cooled equipment and its energy-saving boiler for continuous stainless steel production. It includes a furnace body and a circulating spray cooling assembly with a uniform flow spray box extending into the furnace; its characteristic is that it further includes an adjustable assembly located at the uniform flow spray box and an adjustment drive mechanism passing through the side wall of the furnace body; the adjustable assembly includes an outer gas distribution pipe and an inner sleeve rotatably disposed therein, the inner sleeve being provided with an array of nozzles; the adjustment drive mechanism drives the inner sleeve to rotate relative to the outer gas distribution pipe, changing the communication state between the array of nozzles and the air vents on the outer gas distribution pipe, thereby adjusting the airflow spray width; the adjustable assembly integrates a cleaning and collection structure, which includes a scraper and a cleaning scraper located between the inner sleeve and the outer gas distribution pipe, and a collection trough connected to the outer gas distribution pipe; when the inner sleeve rotates, it drives the scraper and the cleaning scraper to simultaneously clean the inner wall of the outer gas distribution pipe and the array of nozzles, with waste falling into the collection trough.

[0007] Furthermore, there is a gap between the inner sleeve and the interior of the outer gas distribution pipe, with a gap fit at both ends. The array nozzles are made of flexible material and are arranged in three sets symmetrically along the radial direction of the inner sleeve. The three sets of array nozzles have different widths distributed along the axial direction. One set of array nozzles corresponds to the number of vents arranged on the outer gas distribution pipe that fully cover the pipe. The number of the other two sets of array nozzles decreases from both sides to the center to meet the cooling requirements of different width strips.

[0008] Furthermore, the adjustment drive mechanism includes a drive handwheel, a bearing bracket, a fixing rod, and a ratchet; the bearing bracket is fixed to the outer side of the furnace body via the fixing rod; one end of the drive handwheel passes through the bearing bracket and the side wall of the furnace body and is connected to the inner sleeve; the ratchet is coaxially fixedly sleeved on the drive handwheel; the bearing bracket is also provided with a mounting side plate; the mounting side plate is provided with a ratchet tooth that is reset by a spring; the teeth on the ratchet mesh with the ratchet tooth to limit the angle of each rotation of the drive handwheel to degrees; the rotation interval of the degrees is consistent with the radial distribution interval of the three sets of array nozzles on the inner sleeve.

[0009] Furthermore, the outer gas distribution pipe is fixedly supported by a pipe rack, which is fixedly installed on the outer surface of the flow equalization spray box. Several spray pipes are arranged in a straight line inside the flow equalization spray box, and several nozzles are arranged vertically through the spray pipes in a straight line. The vent is installed on the outer gas distribution pipe and communicates with the corresponding nozzles, so that the cooling gas is directly blown onto the strip surface through the inner sleeve, the array vent, the outer gas distribution pipe and the vent.

[0010] Furthermore, the scraper is embedded in the surface of the inner sleeve and located beside each set of array nozzles. The scraper is configured to scrape off carbon deposits by adhering to and sweeping across the inner wall of the gas distribution pipe as the inner sleeve rotates.

[0011] Furthermore, a connecting groove is provided at the bottom of the gas distribution pipe, and the collection box is inclinedly connected to the connecting groove. A pull-out box is movably inserted into one end of the collection box for temporarily storing and cleaning carbon deposits.

[0012] Furthermore, the cleaning scraper is hinged to the upper end of the inner wall of the connecting groove via a torsion spring hinge. The cleaning scraper extends into the gap between the inner sleeve and the outer gas distribution pipe, and its position is configured to avoid the scraper. The cleaning scraper is used to scrape off the carbon deposits on the surface of the array nozzle when the inner sleeve rotates through the position of the connecting groove.

[0013] Furthermore, a circulating fan is installed at the top of the furnace body, and an air supply duct is installed at the outlet of the circulating fan. The air supply duct includes an upper air supply duct, a lower elbow air supply duct, and an upper elbow air supply duct. The upper air supply duct is connected to the outlet of the circulating fan and branches to both sides of the furnace body. The lower elbow air supply duct and the upper elbow air supply duct are both connected to the side of the furnace body through flanges. The furnace body is provided with a strip passage for the strip steel to pass through. Two sets of uniform flow spray boxes are provided, located above and below the strip passage, respectively, and connected to the upper elbow air supply duct and the lower elbow air supply duct, respectively.

[0014] Furthermore, the furnace body is also provided with a flow guide top at the top inside, which is used to guide the hot circulating airflow upward into the circulation system.

[0015] Furthermore, a tubular heat exchanger is provided on the return air path of the circulating spray cooling assembly, and a first temperature sensor and a second temperature sensor are also provided inside the furnace body. The first temperature sensor is located near the circulating fan and above the tubular heat exchanger, and is used to monitor the temperature of the cooled air; the second temperature sensor is located below the tubular heat exchanger and is used to monitor the temperature of the return hot air.

[0016] The above-mentioned at least one technical solution adopted in this invention can achieve the following beneficial effects:

[0017] An intelligent air-cooled device and its energy-saving boiler for continuous stainless steel production utilize an adjustable component comprising an outer gas distribution pipe and a rotating inner sleeve at the uniform flow spray box. This component, along with an adjustment drive mechanism passing through the furnace wall, changes the connection state between the array nozzles and the air nozzles by rotating the inner sleeve relative to the outer gas distribution pipe, thereby achieving online matching and adjustment of the cooling airflow spray coverage width. This design effectively overcomes the shortcomings of existing fixed air spray devices that cannot adapt to changes in strip steel specifications. When producing narrow strip steel, it can precisely close the edge spray channels, avoiding the need for... The energy-saving boiler recovers high-pressure cold energy and eliminates unnecessary waste of fan power, improving system energy efficiency and eliminating edge wave plate defects caused by excessive edge cooling, thereby ensuring product quality. In addition, the invention further utilizes the adjustment and rotation of the inner sleeve as a power source, linking the built-in scraper and cleaning scraper to synchronously and mechanically scrape off carbon deposits on the inner side of the pipe wall and nozzle inlet, and guides the waste material to the collection tank for discharge, realizing the self-cleaning function of adjustment and cleaning, solving the defect that oil and gas volatiles in the circulating hot air can easily cause internal blockage, and reducing the maintenance difficulty of the equipment. Attached Figure Description

[0018] The accompanying drawings, which are provided to further illustrate the invention and constitute a part of this invention, are illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention.

[0019] In the attached diagram:

[0020] Figure 1 This is an overall schematic diagram of the intelligent air-cooled equipment and its energy-saving boiler used for continuous stainless steel production in this application.

[0021] Figure 2 for Figure 1 Rear view;

[0022] Figure 3 for Figure 1 Internal structure diagram;

[0023] Figure 4 for Figure 1 Top view;

[0024] Figure 5 for Figure 1 Schematic diagram of the intermediate spray cooling assembly;

[0025] Figure 6 for Figure 5 A partial structural diagram;

[0026] Figure 7 for Figure 6 Enlarged view of point A;

[0027] Figure 8 for Figure 7A schematic diagram of the bottom structure;

[0028] Figure 9 for Figure 8 Enlarged view of point B;

[0029] Figure 10 for Figure 6 A partial structural diagram;

[0030] Figure 11 for Figure 10 Enlarged view of point C;

[0031] Figure label:

[0032] 1. Furnace body; 11. Belt channel; 12. Guide top; 13. First temperature sensor; 14. Tubular heat exchanger; 15. Second temperature sensor; 2. Circulating spray cooling assembly; 21. Circulating fan; 22. Upper air supply duct; 23. Lower elbow air duct; 24. Upper elbow air duct; 25. Flow equalization spray box; 26. Spray pipe; 261. Nozzle; 3. Adjustable assembly; 31. Gas distribution outer pipe; 32. Inner sleeve; 33. Array nozzle; 34. Scraper; 35. Vent; 36. Pipe rack; 37. Collection trough box; 38. Pull-out box; 39. Cleaning scraper; 310. Connecting groove; 4. Adjustment drive mechanism; 41. Drive handwheel; 42. Bearing bracket; 43. Fixing rod; 44. Ratchet; 45. Mounting side plate; 46. Spring; 47. Ratchet. Detailed Implementation

[0033] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0034] The technical solutions provided by the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0035] Reference Figures 1-11 As shown, the present invention provides an intelligent air-cooled equipment and its energy-saving boiler for continuous stainless steel production, which mainly consists of a furnace body 1, a circulating spray cooling component 2, an adjustable component 3, and an adjustment drive mechanism 4.

[0036] A strip passage 11 is provided along the length of the furnace body 1 for the strip steel to pass through during the annealing process. In order to optimize the circulation efficiency of the hot airflow, a conical guide top 12 is specially provided at the top of the furnace body 1. The guide top 12 can guide the hot circulating airflow after heat exchange with the high temperature strip steel to rise smoothly and enter the circulation and recovery system above.

[0037] The circulating cooling assembly 2 is primarily responsible for providing high-pressure cooling gas and recovering waste heat. For example... Figures 2-5As shown, the circulating fan 21 is installed on the top of the furnace body 1, serving as a power source to drive airflow circulation. The air supply duct is connected to the outlet of the circulating fan 21, specifically including an upper air supply duct 22, a lower elbow air duct 23, and an upper elbow air duct 24. The upper air supply duct 22 diverts the airflow from the fan outlet to both sides of the furnace body 1, and then supplies air to the two sets of equal flow jet boxes 25 located above and below the belt-passing channel 1 through flanges connected to the lower elbow air duct 23 and the upper elbow air duct 24 on the side of the furnace body 1, respectively.

[0038] To achieve temperature monitoring and energy management, please refer to the following: Figures 2-5 As shown, a tubular heat exchanger 14 is installed on the return air path of the circulating spray cooling assembly 2 to cool the high-temperature return gas and recover heat energy. At the same time, a first temperature sensor 13 and a second temperature sensor 15 are also arranged inside the furnace body 1. The first temperature sensor 13 is located near the circulating fan 21 and above the tubular heat exchanger 14 to monitor the temperature of the low-temperature air after cooling in real time. The second temperature sensor 15 is located below the tubular heat exchanger 14 to monitor the temperature of the high-temperature hot air returning from the surface of the strip. The two sensors work together to accurately calculate the heat exchange efficiency and furnace operating conditions.

[0039] Inside the flow equalization spray box 25, there are several spray pipes 26 arranged in a straight line. Several nozzles 261 are arranged in a straight line and vertically penetrate the flow equalization spray box 25, from which high-pressure cold air is sprayed out.

[0040] It should be noted that several protective gas interfaces (not shown in the figure) are connected to the side of the furnace body 1. These protective gas interfaces are connected to an external protective atmosphere source (usually pure hydrogen or ammonia decomposition gas). The protective gas is continuously supplied to the sealed furnace chamber where the strip-passing channel 11 is located through these interfaces. Its function is mainly twofold: first, to maintain a reducing atmosphere inside the furnace during high-temperature annealing, effectively eliminating oxides on the surface of the stainless steel strip and ensuring that the product meets the surface quality requirements for bright annealing; second, to maintain a slightly positive pressure state inside the furnace, where the internal pressure is slightly higher than the external atmospheric pressure, thereby preventing external air from flowing back into the furnace and causing oxidation of the strip or ignition of high-temperature hydrogen, ensuring that the entire intelligent air-cooling cycle process is carried out under fully enclosed, high-purity, and safe operating conditions.

[0041] To address the problem in existing technologies that cannot adjust the spraying range according to the strip width, such as Figures 5-6 and Figures 8-11As shown, the present invention provides an adjustable component 3 at the flow equalization spray box 25. The adjustable component 3 includes an outer air distribution pipe 31 and an inner sleeve 32. The outer air distribution pipe 31 is fixedly supported by a pipe bracket 36, which is fixedly installed on the outer surface of the flow equalization spray box 25. Air nozzles 35 are installed on the outer air distribution pipe 31. These air nozzles 35 are connected one-to-one with the nozzles 261 in the flow equalization spray box 25 to form a cold air injection channel. The inner sleeve 32 is coaxially inserted inside the outer air distribution pipe 31. A gap is designed between the two, and the two ends are fitted with a gap, so that the inner sleeve 32 can rotate freely relative to the outer air distribution pipe 31.

[0042] An array of nozzles 33 is provided on the inner sleeve 32. These nozzles 33 are made of flexible material to ensure good sealing and fit. Three sets of array nozzles 33 are symmetrically arranged along the radial direction of the inner sleeve 32. The width of the three sets of array nozzles 33 in the axial distribution is different, forming three levels: the first set of array nozzles 33 has the largest number, and its distribution width corresponds to the full coverage of all the vents 35 arranged on the outer air distribution pipe 31, which is suitable for cooling wide strip steel; the number of the other two sets of array nozzles 33 decreases from both sides to the center, respectively corresponding to the cooling needs of medium-width and narrow strip steel.

[0043] In order to drive the inner sleeve 32 to switch gears, such as Figures 6-7 As shown, the present invention includes an adjustment drive mechanism 4 that passes through the side wall of the furnace body 1. The adjustment drive mechanism 4 includes a drive handwheel 41, a bearing bracket 42, a fixing rod 43, and a ratchet 44. The bearing bracket 42 is securely mounted on the outer side of the furnace body 1 via the fixing rod 43. One end of the drive handwheel 41 passes through the bearing bracket 42 and the side wall of the furnace body 1 and is directly connected to the inner sleeve 32. The ratchet 44 is coaxially fixedly sleeved on the drive handwheel 41. The bearing bracket 42 is provided with a mounting side plate 45, on which a ratchet 47 is mounted and reset by a spring 46. The teeth on the ratchet 44 and the ratchet 47 cooperate with each other to limit the effective rotation angle of the drive handwheel 41 to 30 degrees. This 30-degree rotation interval is calculated to be completely consistent with the radial distribution interval of the three sets of array nozzles 33 on the inner sleeve 32, thereby ensuring that each rotation can accurately switch to the next set of different width spray positions.

[0044] like Figures 8-9As shown, the present invention also integrates an online cleaning and collection structure in the adjustable component 3 to solve the carbon buildup problem. It should be noted that, since the air-cooling system of this equipment typically adopts a closed-loop circulation mode to recover heat energy, a small amount of rolling oil vapor volatilized from the surface of the high-temperature strip steel will inevitably mix into the circulating cooling gas. When this gas flow containing trace amounts of oil vapor flows at high speed through the interior of the gas distribution pipe 31 and attempts to be ejected through the narrow vent 35 and array vents 33, due to the throttling effect of fluid mechanics and the local turbulence at the orifice, the oil vapor molecules easily condense and adsorb at the inner inlet edge of the injection hole. In addition, the adjustable component 3 is constantly exposed to the high-temperature radiation environment of the furnace, and the oil adsorbed on the inner wall of the pipe will rapidly undergo pyrolysis and carbonization, forming a hard and strongly adhering carbon layer. As production continues, this carbon deposit will gradually accumulate and block the injection channel, leading to a drop in cooling air pressure and uneven cooling of the strip steel. Therefore, the online cleaning and collection structure mainly includes a scraper 34, a cleaning blade 39, and a collection trough 37.

[0045] Specifically, the scraper 34 is embedded on the surface of the inner sleeve 32 and located beside each array of nozzles 33. When the inner sleeve 32 rotates, the scraper 34 can brush against the inner wall of the gas distribution pipe 31, physically scraping away the carbon deposits attached to the inner wall. At the same time, a connecting groove 310 is provided at the bottom of the gas distribution pipe 31, and a collection box 37 is inclinedly connected to the connecting groove 310. One end of the collection box 37 is also movably connected to a pull-out box 38, one end of which extends out of the furnace body 1, facilitating the periodic removal and cleaning of temporarily stored carbon deposits.

[0046] For cleaning carbon deposits on the surface of the array nozzle 33, a cleaning scraper 39 is hinged to the upper end of the inner wall of the connecting groove 310 via a torsion spring hinge. The cleaning scraper 39 extends into the gap between the inner sleeve 32 and the outer gas distribution pipe 31, and its position is specially designed to avoid the scraper 34. When the inner sleeve 32 rotates and passes the position of the connecting groove 310, the flexible surface of the array nozzle 33 will sweep across the cleaning scraper 39, thereby scraping off the carbon deposits on the surface of the nozzle.

[0047] Working principle: In the continuous annealing process of stainless steel strip, pure hydrogen or ammonia decomposition gas is first continuously injected into the furnace through the protective gas interface on the side of the furnace body 1 to maintain a reducing atmosphere and slightly positive pressure environment in the strip threading channel 11, preventing strip oxidation. After the system starts, the circulating fan 21 runs at high speed, extracting the process gas after it has been cooled by the tubular heat exchanger 14, and diverting it to both sides through the upper air supply duct 22, and then guiding it into the uniform flow spray boxes 25 on the upper and lower sides of the strip threading channel 11 through the lower elbow air duct 23 and the upper elbow air duct 24.

[0048] High-pressure cold air enters the nozzle 26 inside the uniform flow spray box 25, and then enters the adjustable component 3 through the vertically penetrating nozzle 261. It then passes sequentially through the array nozzles 33 on the inner sleeve 32 and the vents 35 on the outer gas distribution pipe 31, ultimately forming a high-pressure jet that vertically impacts the surface of the high-temperature strip steel, achieving rapid cooling. The high-temperature gas after heat exchange rises smoothly under the guidance of the guide top 12, recovers heat through the tubular heat exchanger 14, and is cooled again before being drawn into the circulating fan 21. The first temperature sensor 13 and the second temperature sensor 15 monitor the temperature difference before and after circulation in real time to ensure heat exchange efficiency and process stability.

[0049] When the specifications of the produced strip steel change (e.g., switching from wide to narrow strip), the operator makes online adjustments by regulating the drive mechanism 4. Rotating the drive handwheel 41 on the outside of the furnace body 1, through the engagement of the ratchet 44 and the ratchet 47 on the mounting side plate 45, causes the inner sleeve 32 to rotate 30 degrees relative to the outer gas distribution pipe 31. Since the inner sleeve 32 has three sets of array nozzles 33 of different widths arranged radially (corresponding to full coverage, medium width, and narrow width respectively), the rotation causes one set of array nozzles 33 of a predetermined width to align and connect with the air nozzles 35 on the outer gas distribution pipe 31, while the remaining spray channels are closed by the wall of the inner sleeve 32. Through this mechanical switching, the equipment can precisely control the width of the cooling airflow spray covering the strip steel surface, avoiding ineffective spraying of areas outside the edges of the narrow strip steel, saving fan energy consumption, and effectively preventing edge waviness defects caused by excessively rapid edge cooling.

[0050] During the rotation adjustment of the inner sleeve 32, the integrated online cleaning structure works simultaneously. The scraper 34 embedded on the surface of the inner sleeve 32, along with the rotational movement, brushes against the inner wall of the outer air distribution pipe 31, physically scraping away the carbon deposits adhering to the nozzle inlet due to the throttling effect. At the same time, when the flexible array nozzle 33 on the inner sleeve 32 rotates through the bottom connecting groove 310 area, the cleaning scraper 39 hinged to the groove opening sweeps across the nozzle surface, scraping off the deposits at the nozzle port. The carbon debris and impurities peeled off by the scraper 34 and cleaning scraper 39, under the combined action of gravity and airflow in the pipe, fall along the connecting groove 310 into the collection box 37 below, and finally accumulate in the movable pull-out box 38. This design achieves self-cleaning of the air circuit components simultaneously by adjusting the width without stopping the machine or disassembling the equipment, ensuring the long-term smooth operation of the air-cooled system.

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An intelligent air-cooled equipment and its energy-saving boiler for continuous stainless steel production, comprising a furnace body (1) and a circulating spray cooling assembly (2) equipped with a uniform flow spray box (25) extending into the furnace; characterized in that: It also includes an adjustable component (3) located at the uniform flow air box (25) and an adjustment drive mechanism (4) passing through the side wall of the furnace body (1); the adjustable component (3) includes an outer gas distribution pipe (31) and an inner sleeve (32) rotatably disposed therein, the inner sleeve (32) being provided with an array of nozzles (33); the adjustment drive mechanism (4) drives the inner sleeve (32) to rotate relative to the outer gas distribution pipe (31), changing the relative position of the array of nozzles (33) and the air nozzles (35) on the outer gas distribution pipe (31). In the connected state, the airflow spray width is adjusted; the adjustable component (3) integrates a cleaning and collection structure, which includes a scraper (34) and a cleaning scraper (39) disposed between the inner sleeve (32) and the outer air distribution pipe (31), and a collection box (37) connected to the outer air distribution pipe (31); when the inner sleeve (32) rotates, it drives the scraper (34) and the cleaning scraper (39) to clean the inner wall of the outer air distribution pipe (31) and the array nozzle (33) simultaneously, and the waste falls into the collection box (37).

2. The intelligent air-cooled equipment and its energy-saving boiler for continuous stainless steel production according to claim 1, characterized in that, There is a gap between the inner sleeve (32) and the inner side of the gas distribution pipe (31), with gap fitting at both ends. The array nozzles (33) are made of flexible material and are arranged in three sets symmetrically along the radial direction of the inner sleeve (32). The widths of the three sets of array nozzles (33) are different along the axial direction. One set of array nozzles (33) corresponds to the number of air nozzles (35) arranged on the gas distribution pipe (31) that are fully covered. The number of the other two sets of array nozzles (33) decreases from both sides to the center to meet the cooling requirements of different width strips.

3. The intelligent air-cooled equipment and its energy-saving boiler for continuous stainless steel production according to claim 2, characterized in that, The adjustment drive mechanism (4) includes a drive handwheel (41), a bearing bracket (42), a fixing rod (43), and a ratchet (44). The bearing bracket (42) is fixed to the outer side of the furnace body (1) by the fixing rod (43). One end of the drive handwheel (41) passes through the bearing bracket (42) and the side wall of the furnace body (1) and is connected to the inner sleeve (32). The ratchet (44) is coaxially fixedly sleeved on the drive handwheel (41). The bearing bracket (42) is also provided with a mounting side plate (45). The mounting side plate (45) is provided with a ratchet tooth (47) that is reset by a spring (46). The teeth on the ratchet (44) cooperate with the ratchet tooth (47) to limit the angle of rotation of the drive handwheel (41) to 30 degrees each time. The 30-degree rotation interval is consistent with the radial distribution interval of the three sets of array nozzles (33) on the inner sleeve (32).

4. The intelligent air-cooled equipment and its energy-saving boiler for continuous stainless steel production according to claim 1, characterized in that, The gas distribution pipe (31) is fixedly supported by the pipe frame (36), which is fixedly installed on the outer surface of the flow equalization spray box (25). Several spray pipes (26) are arranged in a straight line inside the flow equalization spray box (25). Several nozzles (261) are arranged vertically through the spray pipes (26) in a straight line. The vent (35) is installed on the gas distribution pipe (31) and communicates with the nozzles (261) accordingly, so that the cooling gas is directly blown onto the strip surface through the inner sleeve (32), the array vent (33), the gas distribution pipe (31) and the vent (35).

5. The intelligent air-cooled equipment and its energy-saving boiler for continuous stainless steel production according to claim 1, characterized in that, The scraper (34) is embedded in the surface of the inner sleeve (32) and located beside each set of the array nozzles (33). The scraper (34) is configured to scrape off carbon deposits by adhering to and sweeping across the inner wall of the gas distribution pipe (31) as the inner sleeve (32) rotates.

6. The intelligent air-cooled equipment and its energy-saving boiler for continuous stainless steel production according to claim 1, characterized in that, The bottom of the gas distribution pipe (31) is provided with a connecting groove (310), and the collection box (37) is inclinedly connected to the connecting groove (310). One end of the collection box (37) is movably inserted with a pull-out box (38) for temporarily storing and cleaning carbon deposits.

7. The intelligent air-cooled equipment and its energy-saving boiler for continuous stainless steel production according to claim 6, characterized in that, The cleaning scraper (39) is hinged to the upper end of the inner wall of the connecting groove (310) by a torsion spring hinge. The cleaning scraper (39) extends into the gap between the inner sleeve (32) and the outer gas distribution pipe (31), and its position is configured to avoid the scraper (34). The cleaning scraper (39) is used to scrape off the carbon deposits on the surface of the array nozzle (33) when the inner sleeve (32) rotates through the position of the connecting groove (310).

8. The intelligent air-cooled equipment and its energy-saving boiler for continuous stainless steel production according to claim 1, characterized in that, A circulating fan (21) is provided at the top of the furnace body (1). An air supply duct is provided at the outlet of the circulating fan (21). The air supply duct includes an upper air supply duct (22), a lower elbow air supply duct (23), and an upper elbow air supply duct (24). The upper air supply duct (22) is connected to the outlet of the circulating fan (21) and diverts the air to both sides of the furnace body (1). The lower elbow air supply duct (23) and the upper elbow air supply duct (24) are both connected to the side of the furnace body (1) through flanges. The furnace body (1) is provided with a strip passage (11) for the strip steel to pass through. Two sets of uniform flow spray boxes (25) are provided, located above and below the strip passage (11) respectively, and are connected to the upper elbow air supply duct (24) and the lower elbow air supply duct (23) respectively.

9. The intelligent air-cooled equipment and its energy-saving boiler for continuous stainless steel production according to claim 1, characterized in that, The furnace body (1) is also provided with a flow guide top (12) at the top of its interior, which is used to guide the hot circulating airflow to rise and enter the circulation system.

10. The intelligent air-cooled equipment and its energy-saving boiler for continuous stainless steel production according to claim 8, characterized in that, The circulating spray cooling assembly (2) has a tubular heat exchanger (14) on its return air path. The furnace body (1) is also equipped with a first temperature sensor (13) and a second temperature sensor (15). The first temperature sensor (13) is located near the circulating fan (21) and above the tubular heat exchanger (14) to monitor the temperature of the cooled air. The second temperature sensor (15) is located below the tubular heat exchanger (14) to monitor the temperature of the return hot air.

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