Repair device for high-temperature corrosion of refractory lining

Abstract

The invention relates to a high-temperature corrosion repairing device for a refractory lining. Strong rotation type high-temperature short flames which are stable and continuous at the temperature of nearly 3000 DEG C are generated and kept at an outlet of a flame generator, and the surface of a local area of the refractory lining wall of the industrial furnace is heated to be in a high-temperature molten state. And meanwhile, a powdery refractory material repairing material is continuously and dispersedly sprayed to the heated lining wall. The hot flux is proportionally added into the repairing material, and due to the high-temperature action of the lining wall, the repairing material reaching the surface of the lining wall is quickly converted into a high-temperature molten state from normal-temperature solid powder and is adhered to the lining wall. After high-temperature liquid phase sintering is formed between the original lining and the repairing material, ceramics are combined into a whole, a new high-strength fireproof lining layer is developed, and the thinned or damaged lining wall is repaired to an original good state. The repairing device can enable the flame generator to swing up and down and left and right in all directions to adjust the distance to the lining repairing surface, and can also enable the flame generator to move forwards and backwards or rotate forwards and backwards to reach a new repairing position.

Description

Technical Field

[0001] The present invention relates to industrial furnaces with thermal functions, such as different types of high-temperature smelting furnaces, heating furnaces, large boilers, etc. During the production process, the furnace of the industrial furnace is always in a high-temperature state, and its refractory lining wall is continuously eroded by high temperature, and its thickness gradually decreases, or serious damage occurs in local areas. Timely high-temperature flame repair of the refractory lining wall is an effective way to maintain or repair the refractory lining, eliminate existing safety hazards, and restore its normal working state. The high-temperature erosion repair device for the refractory lining is a key equipment used in the high-temperature flame repair work of the refractory lining of various industrial furnaces. Background Art

[0002] During industrial furnace operation, the refractory lining is tightly adhered to the furnace shell from the inside, maintaining its shape and thickness, and maintaining the high temperatures required by the production process. The choice of refractory material for the refractory lining and its desired thickness are determined based on the unique characteristics of each furnace. Regardless of the type of industrial furnace, the high temperatures within the furnace will erode the refractory lining, either rapidly or slowly, and are the primary factor in the gradual thinning of the refractory lining. Rapid localized refractory lining degradation can occur due to a variety of reasons. If the thickness of a large or localized area of the refractory lining falls below the safe operating limit and is not promptly maintained and repaired, the furnace must cease normal operation and enter a shutdown for maintenance. The old refractory lining, if no longer usable, or if still usable, must be removed, and a new refractory lining constructed to meet the next level of safety requirements. Regardless of the quality of the refractory materials used in the refractory lining of industrial furnaces, only a very small portion of the refractory is effectively consumed during the production process—corrosion by the high temperatures within the furnace. The majority of the remaining refractory material is removed and disposed of as secondary refractory material with a low recycling rate, resulting in a significant waste of refractory resources. The entire process of constructing new refractory linings in industrial furnaces is often performed manually due to the typically narrow space within the furnace. This labor-intensive process, often performed in high-temperature, dusty environments, is labor-intensive and has a low degree of mechanization. This process consumes a large amount of labor and results in extremely high labor costs. Production downtime for maintenance compresses normal production time, reduces equipment availability, and drives up production costs. To extend the service life of industrial furnace refractory linings, the use of high-quality refractory materials as the primary raw material for these linings has long been sought. Furthermore, rigorous and meticulous workmanship is employed during the refractory lining construction process to ensure high quality. The use of high-end, high-quality refractory materials in the refractory linings of industrial furnaces inevitably increases their unit price. Although the number of uses of the refractory linings of industrial furnaces has increased, or their service life has been extended, the increase is relatively limited, and the economic benefits have not improved. The amount of refractory material consumed per unit of product produced has decreased, but the cost of purchasing refractory materials has not decreased, and has even increased.

[0003] Repairing is an important way to extend the lifespan of industrial furnace refractory linings. This involves restoring the refractory lining to its original thickness during production breaks through repair procedures. In practice, some industrial furnaces suitable for repairing have achieved significant results, significantly increasing the number of uses or lifespan of the refractory lining. This reduces refractory material consumption and improves economic efficiency. The more mature repair methods used in practice include dry, semi-dry, and wet methods. High-temperature flame repair is still in its exploratory stage due to technical, equipment, and safety limitations, with no reported successful applications. Regardless of the repair method, the repair material first adheres to the surface of the refractory lining and, under high temperature, sinters to form a single piece, completing the repair process. Dry, semi-dry, and wet methods offer advantages such as low mechanization and automation, simple operation, safety, and reliability. The equipment and setup are simple, space-saving, and easy to move. The shortcomings of dry, semi-dry, and wet repair methods are also obvious, sufficiently limiting their widespread use. With dry repair, the sprayed repair material rebounds and falls onto the vertical refractory lining of industrial furnaces, resulting in extremely low adhesion. It can only accumulate on horizontal or gently sloping refractory lining surfaces. Furthermore, the refractory lining and the repair material fail to form a single bond. During production, the repair material rapidly loses its effectiveness, resulting in poor repair results. With semi-dry and wet repair, appropriate amounts of water are added to the repair material, mixed evenly, and then applied to the refractory lining of an industrial furnace. While wet repair materials have a high adhesion rate to refractory linings at room temperature, they cannot be immediately put into production after completion. They require a long period of room-temperature curing to allow the moisture contained within the refractory lining to fully evaporate. They must then undergo a furnace heating process from low to high temperatures before they can be put into production. This is clearly unsuitable for the fast-paced production of industrial furnaces. After adding water, the wet repair material cannot repair the hot refractory lining wall, because when the wet repair material comes into contact with the hot refractory lining wall, the original high-temperature refractory lining wall surface will drop rapidly, and the refractory lining wall will crack, powder and fall off. Not only will the desired repair effect not be achieved, but the original refractory lining wall will also be damaged.

[0004] During high-temperature flame repair of the refractory lining of an industrial furnace, the flame generator outlet of the high-temperature erosion repair device generates and maintains a stable, intense, rotating, high-temperature, short flame at nearly 3000°C, heating a localized area of the furnace's refractory lining to a molten state. Simultaneously, fine-grained refractory repair material is continuously, evenly, and diffusely sprayed onto the heated lining. The hot melt incorporated into the repair material rapidly transforms any solid powder at room temperature into a molten state due to the high temperature of the lining, adhering to the furnace's refractory lining. A high-temperature liquid phase sintering forms between the original refractory lining and the repair material, forming a ceramic bond and developing a new, high-strength refractory lining layer, restoring the refractory lining to its original thickness. High-temperature flame repair can be repeated during each break in the furnace's operation, providing comprehensive, routine maintenance and repair of the refractory lining and extending its service life. High-temperature flame repair of industrial furnace refractory linings can theoretically extend the life of the lining. The goals of high-temperature flame repair are to significantly increase the service life of the refractory lining, significantly reduce the need to remove old linings and construct new ones, and significantly reduce the cost of lining the lining, resulting in excellent economic benefits. Advantages of using high-temperature flame repair for industrial furnace refractory linings include: It can repair refractory linings that are already at high temperatures. During high-temperature flame repair, the refractory lining surface is heated to a molten state using a high-temperature flame. The higher the surface temperature of the repaired refractory lining, the more favorable the repair process. High-temperature flame repair also results in high adhesion of the repair material, minimal rebound and fall losses, and high utilization rates. After high-temperature flame repair, the refractory lining can be immediately put into production, requiring no maintenance and offering excellent durability. This significantly increases the life of the refractory lining, thereby increasing furnace availability and reducing production costs. High-temperature flame repairing uses standard-quality bulk refractory materials, which are low-cost and significantly reduce the cost of industrial furnace refractory linings, providing a solid foundation. High-temperature flame repairing provides comprehensive maintenance and repair of industrial furnace refractory linings. It can also be used for selective, targeted repairs to severely damaged areas, eliminating safety hazards. However, the following characteristics make high-temperature flame repairing unsuitable for the following reasons: 1) It is inconvenient to perform high-temperature flame repair on the refractory lining of an industrial furnace at room temperature. High-temperature flame repairing of a room-temperature refractory lining requires increased thermal energy, time, and gas energy consumption, as the surface heats up from room temperature to a high-temperature molten state. High-temperature flame repairing requires rapid heating of the lining surface from room temperature, resulting in significant temperature fluctuations within the refractory lining. This can lead to excessive thermal stresses within the lining, resulting in numerous cracks with uncertain orientations, both visible and hidden, significantly reducing the lining's resistance to high-temperature erosion. This is especially true for refractory linings built with refractory materials that have poor thermal shock resistance.2) The high-temperature flame repair device has limited heating capacity after all. It is impossible to quickly heat the lining wall surface that needs to be repaired to a high-temperature molten state. The repair material can only be sprayed onto the lining wall surface at a small flow rate. High-temperature flame repair is a slow process. It takes a long time to repair the refractory lining wall surface of an industrial furnace over a large area with high-temperature flames. For industrial furnaces with a fast production pace and short work intervals, it is inconvenient to implement high-temperature flame repair methods. 3) The entire high-temperature flame repair system is large in scale and contains a large number of main and auxiliary equipment, which is not convenient for frequent movement. It is inconvenient to implement high-temperature flame repair methods in places with narrow work spaces.

[0005] Examples of the application of high-temperature flame repair of refractory linings in industrial furnaces: 1) Coke ovens that produce coke have refractory linings on both sides adjacent to the coke outlet. When the coke is discharged from the coke oven, they are subjected to strong squeezing and sliding friction from the red-hot solid coke, causing rapid damage. This is a sensitive area of the entire coke oven refractory lining that is damaged first, and the negative impact on the normal production of the coke oven is obvious. Neither dry nor wet methods are feasible to repair the damaged refractory lining. During dry repair, the adhesion rate of the repair material to the refractory lining on the side is extremely low, and there is no repair effect on the lining. Wet repair first requires the refractory lining of the coke oven to be cooled from the high temperature state during production to near room temperature before repair can be carried out. After the wet repair is completed, a long curing time is required, and the production rhythm of the coke oven does not allow for long-term suspension. During high-temperature flame repair of the refractory lining, the refractory lining wall that needs to be repaired is at a high temperature. Once the high-temperature flame repair is completed, the refractory lining can be put into production immediately, which meets the tight production rhythm of the coke oven and the requirement that production cannot be stopped for a long time. During high-temperature flame repair, the repair material has a good adhesion rate to the refractory lining wall on the opposite side, and the newly formed refractory lining wall layer has high strength, meeting the production requirements of the coke oven. This method compensates for the shortcomings of the coke oven refractory lining wall, which is prone to frequent damage in specific local areas. The damaged refractory lining wall can be repaired anytime and anywhere using high-temperature flame repair. 2) During operation, the refractory lining wall of the steelmaking ladle is continuously eroded by the high-temperature molten steel, and its thickness gradually decreases. The refractory lining wall of the ladle is very suitable for high-temperature flame repair during work breaks, so that the thinned thickness can be maintained, repaired and maintained. After the reverse thickening reaches the required normal thickness, it can enter the next stage of production operation. After pouring steel, the ladle enters a work-in-progress interval. During high-temperature flame repair, the refractory lining surface remains hot, shortening the time it takes for the flame to heat the lining and reach the required high temperature. During high-temperature flame repair, the refractory lining's ability to rapidly heat is limited, requiring a low flow rate of repair material and resulting in a longer repair period. However, multiple ladle systems operate in parallel, allowing ample time between work intervals for each individual ladle. The entire high-temperature flame repair system for refractory linings requires numerous main and auxiliary equipment, making frequent movement inconvenient. Among all industrial furnace systems, the ladle is the only part of the furnace that can be freely moved within a large area and space, making it easy to reach the desired work position. The high-temperature flame repair equipment remains stationary, while the ladle requiring repair is moved to the repair location. The inherent characteristics of the ladle, combined with the strengths and weaknesses of the high-temperature flame repair process, significantly increase the lifespan of the ladle refractory lining and create a long-lasting ladle refractory lining. 3) The refractory lining of the steel rolling ring heating furnace cannot be repaired with high-temperature flames. For various types of industrial furnaces, the suitability of the refractory lining for high-temperature flame repair must be determined based on a detailed analysis of the actual conditions of each furnace, with the goal of achieving the best economic benefits.If economic benefits cannot be improved, there is no need to carry out high-temperature flame repair work on the refractory lining.

[0006] Economic Benefit Calculation of High-Temperature Flame Repair of Industrial Furnace Refractory Linings: Taking the high-temperature flame repair of the refractory lining of a steelmaking ladle as an example, we will examine the economic benefits it can generate. During production, a ladle needs to move freely within a large area and space, which inevitably limits its external dimensions and weight. In industrial furnaces that also carry and smelt high-temperature molten steel, the thickness of the ladle's refractory lining is relatively thin. In most steel mills, the ladle is not simply used to carry high-temperature molten steel; it is also known as a ladle refining furnace, carrying out the smelting process during the later reduction phase of the high-temperature molten steel. Furthermore, to remove harmful gases and impurities from the high-temperature molten steel, the entire ladle is placed in a vacuum chamber at extremely low pressure for degassing and purification. Both the smelting process and the vacuum environment of the ladle accelerate the erosion of the refractory lining by the high-temperature molten steel. Consequently, the initial allowable thickness of the ladle's refractory lining is relatively small, and the harsh operating environment makes it subject to severe erosion by the high-temperature molten steel. The refractory lining of a ladle has no maintenance, repair, or servicing options throughout its entire lifecycle. Among all industrial furnace systems, the lifespan of a ladle refractory lining is extremely short. Using a ladle from a specific steel mill as an example, we present the relevant parameters for the ladle refractory lining during actual steelmaking operations. (Specific conditions vary between steel mills, and the relevant parameters vary; these are provided for reference only.) However, this example provides a general overview of the overall condition of the ladle refractory lining across various steel mills. The vast majority of the ladle refractory lining at this steel mill is constructed from high-quality, cost-effective magnesia-carbon bricks, which are highly resistant to high-temperature molten steel corrosion. During steelmaking operations, the rate at which the hot steel erodes the ladle refractory lining varies slightly from location to location. If any area is eroded to approximately one-fifth of its original thickness, the ladle must be removed from service, the remaining lining removed, and a new lining installed. If the ladle continues to be used, the probability of steel leaks during steelmaking operations will increase significantly. Ladle leaks are a serious safety hazard in steelmaking and must not be tolerated. The average ladle refractory lining lasts approximately 40 heats, consuming approximately 6 kg of high-end refractory material per ton of steel. This translates to an average cost of approximately 40 yuan per ton of steel produced. During the ladle's downtime, high-temperature flame repairs are performed on the refractory lining. This repair restores the lining's thickness, which was lost during previous production runs, to high-quality, high-quality material before it can be used again in the next steelmaking cycle. This repeated cycle theoretically extends the life of the ladle's refractory lining. However, this is impossible in reality due to various factors. However, the number of heats the ladle refractory lining is used will increase significantly, from 40 to 240 heats. This means that after high-temperature flame repair, the refractory lining life will be six times longer, and refractory consumption per ton of steel can be reduced to 2 kg. Conventional, inexpensive refractory materials can be used for the repairs, as long as they meet the ladle's process requirements.Continuous, long-term high-temperature flame repair of the ladle's refractory lining reduces the cost of ladle refractory lining from 40 yuan to approximately 20 yuan per ton of steel produced, excluding additional equipment depreciation, oxygen consumption, and fuel gas energy costs. For example, in a steelmaking unit with an annual output of 1.1 million tons, if all ladle refractory linings were high-temperature flame repaired, the annual steelmaking cost savings, not including indirect economic benefits, would be approximately 22 million yuan. China currently produces 1 billion tons of steel annually, and every ton of steel must pass through the ladle. If the vast majority of ladle refractory linings were high-temperature flame repaired, the economic benefits would be staggering, saving vast quantities of high-temperature refractory materials. This applies not only to ladle linings, but also to the refractory linings of many other industrial furnaces, which would require development of materials suitable for high-temperature flame repair. It's no exaggeration to say that the high-temperature flame repair process and technology for refractory linings, widely used in a wide variety of industrial furnaces, has significantly extended the service life of industrial furnace refractory linings, significantly saved significant amounts of refractory materials, significantly reduced manual construction of refractory linings, and increased mechanization and automation. This has increased the availability of production equipment, reduced unit costs, and improved economic benefits, driving revolutionary progress in the industrial furnace industry. Summary of the Invention

[0007] The present invention's high-temperature erosion repair device for refractory linings features a main feature: the device's main and auxiliary flame generators are driven by a travel system and enter the furnace chamber through the furnace door or a dedicated opening. Oxygen and fuel gas carrying fluidized powdered repair material, supplied by separate external pipelines, are fed to the repair device's rotating sleeve combiner. Then, they are transferred to the main double-layer sleeve, with oxygen in the outer layer and fuel gas in the inner layer, and delivered to the main flame generator at its end. The main flame generator converts the high-pressure oxygen into a normal-pressure, high-speed, and highly rotating form within the main flame generator's nozzle. The highly rotating oxygen and fuel gas are mixed within the main flame generator's nozzle, allowing for rapid and thorough premixing without combustion before being ejected from the nozzle. The axial velocity of the mixed oxygen and fuel gas flow within the nozzle is adjusted to 2.5 to 4.5 times the flame's combustion velocity to prevent the risk of combustion or flashback within the nozzle. The thoroughly mixed oxygen and fuel gas are ejected from the nozzle outlet in a highly rotating form. It produces a short flame with rapid combustion, excellent stability, high temperature, and rapid dispersion. This ultra-high-temperature short flame effectively reduces heat dissipation into the surrounding area while increasing the heated area of the refractory lining at the repair site. It also heats up quickly and achieves high thermal efficiency. The repair material is also ejected in a highly swirling spiral at the nozzle outlet, dispersing rapidly and evenly. It avoids accumulation on the lining surface and spreads over a large area, meeting the requirements of high-temperature flame repair processes. While there is no risk of combustion or flashback within the nozzle, the mixture can still flame out at the nozzle outlet, a potentially dangerous phenomenon. The high flow rate of the oxygen and gas mixture ejected from the nozzle quickly fills the semi-enclosed furnace chamber, posing a high risk of deflagration and explosion. To prevent the main flame generator from generating flameout, multiple auxiliary flame generator nozzles are positioned around the nozzle's outer circumference, closely adjacent to the nozzle, and operate continuously. When a strongly swirling mixture of oxygen and fuel gas is ejected from the nozzle's orifice into open space, its velocity rapidly decreases, reaching or falling below its combustion speed, where it is rapidly ignited by the high-temperature flame at the nozzle's outlet. The nozzle of the main flame generator inherently maintains a strong, continuous flame, while also providing protection from the auxiliary high-temperature flame, preventing the mixture from deflagration and accumulation. The nozzles of the auxiliary flame generator also emit a mixture of oxygen and fuel gas, posing the same challenges of preventing flashback and flameout. Each nozzle utilizes a large number of very small orifices, effectively preventing flashback. Due to the nozzle's extremely small orifice diameter, even when the mixture is ejected at high speed, the distance it takes to decay to the flame's combustion speed is extremely short. Combined with the clustering effect of the orifices, flameout is virtually nonexistent.The mixed gas supplied to the nozzle is delivered through a completely enclosed pipeline. Although the external environment is an extremely high-temperature flame, the mixed gas inside the pipeline is at room temperature, far below the ignition or flash point. The flow rate is extremely fast, and the temperature rise is minimal, eliminating the possibility of ignition or flashback. Because the nozzle is also close to the refractory lining, the high-temperature flame at its outlet provides auxiliary heating to the lining, causing the temperature of the heated lining to rise faster.

[0008] The nozzles of multiple sets of auxiliary flame generators are supplied with oxygen and fuel gas from the same set of gas dividers. The gas dividers receive the oxygen and fuel gas respectively delivered by their respective pipelines and convert them into multiple sets of auxiliary double-layer pipelines for transportation, with oxygen in the outer layer and fuel gas in the inner layer. When approaching the nozzles, they are merged into a single pipeline for transportation, so that the oxygen and fuel gas are fully mixed and evenly mixed when they reach the nozzles. The gas divider is installed near the root of the main double-layer casing, and its component gas distribution core sleeve is hung on the outer wall of the main double-layer casing, rigidly connected to each other, and rotate synchronously. The gas distribution core component of the gas divider and the outer sleeve of the divider form two chambers, the oxygen chamber and the fuel gas chamber. The two interfaces of the divider outer sleeve respectively introduce oxygen and fuel gas into the oxygen chamber and the fuel gas chamber. The oxygen and fuel gas are then converted into multiple sets of auxiliary double-layer casings distributed in the circumferential direction, and each set has oxygen in the outer layer and fuel gas in the inner layer for transportation. The gas distributor rotates with the main double-layer casing, while the distributor, encased in a steel anti-rotation brake, does not rotate with the core. A distributor bearing maintains concentricity between the two components, and a distributor seal prevents oxygen or gas leakage. The distributor oscillates in all directions, up and down, left and right, with the main double-layer casing, exhibiting slight displacement. The connected oxygen and gas lines are rubber hoses, so this displacement is well within the correct range.

[0009] The rotating sleeve-and-tube combiner is also a key component of the high-temperature erosion repair system for refractory linings. Oxygen and fuel gas carrying fluidized powdered repair material are supplied to the rotating sleeve-and-tube combiner via two separate pipes. The rotating sleeve-and-tube combiner converts the oxygen and fuel gas into gases and delivers them to the main flame generator through a rotating main double-layer sleeve, with oxygen in the outer layer and fuel gas carrying fluidized powdered repair material in the inner layer. The transition points within the rotating sleeve-and-tube combiner inevitably involve movable interfaces, which present the potential for gas leakage. The gas pipeline joints utilize multiple sealing methods, including multi-stage rubber seals, mechanical labyrinths, and grease filling, ensuring leak-free operation. Grease also lubricates the rotating support bearings and gas pipeline joints within the rotating sleeve-and-tube combiner. The oxygen joints utilize a sleeve-and-tube design, ensuring relative rotation between the inner and outer layers. The contact surfaces are highly polished, with multiple oxygen seals incorporated into the seal. The interface between the gas and oxygen utilizes a tight fit between the deep hole and the long axis, with welds added to the end faces of the mating ends. This ensures absolutely no cross-flow between the oxygen and gas, while also enabling synchronized rotation of the inner and outer pipes, allowing for the transmission of high torque. The inner and outer steel pipes of the main double-layer casing are connected to the main body of the rotating casing combiner via fine threads and end welds, creating a rigid connection between the rotating portion of the rotating casing combiner and the main double-layer casing. During high-temperature flame repair of the refractory lining of an industrial furnace, the main and auxiliary flame generators of the repair device are typically located deep within the furnace. The rotating main double-layer casing is relatively long and features a gas divider and multiple auxiliary double-layer casings tightly attached to its periphery, rotating with it. The rotating casing combiner supports the main double-layer casing, bearing its weight and the significant cantilever bending moment it generates. This moment is transmitted to the vehicle body via a set of rotating support bearings, one at the front and one at the rear.

[0010] During operation, the high-temperature erosion repair device for refractory linings uses a double-layered main and auxiliary casing, supporting the main and auxiliary flame generators, which extend into the furnace. To achieve full-scale repair of the refractory lining, the device requires the following motions: forward and reverse rotation, shifting the high-temperature flame repair surface circumferentially. Forward and backward movement shifts the high-temperature flame repair surface depthwise. Full-scale swinging motion, coordinated left, right, up, and down, adjusts the distance between the nozzle and the lining. The assembly of the device's main components demonstrates its full range of motion. The vertical swing frame consists of two levels: the rotating casing combiner is fixedly mounted on the upper level, and the rotary reducer is fixedly mounted on the lower level. A driving gear mounted on the output shaft of the rotary reducer drives the meshing of the driven gears of the rotating casing combiner's components, resulting in forward and reverse rotation of the main and auxiliary flame generators. The vertical swing frame is rigidly connected to the vertical swing main shaft. The ends of the vertical swing main shaft are hinged to two symmetrical vertical plates via vertical swing bearings. The two vertical plates support and suspend the vertical swing frame, allowing a small vertical swing range between the two vertical plates. The two vertical plates are fixed to the horizontal swing support plate. A vertical swing hydraulic cylinder is connected between the vertical swing frame and the horizontal swing support plate. Under the action of hydraulic force, the piston of the vertical swing hydraulic cylinder moves vertically, causing the vertical swing frame to swing vertically, that is, the main and auxiliary flame generators to swing up and down. The horizontal swing support plate is rigidly connected to the horizontal swing main shaft, and the horizontal swing support sleeve is rigidly connected to the vehicle body. An upper horizontal swing load-bearing bearing and a lower horizontal swing positioning bearing are installed between the horizontal swing main shaft and the horizontal swing support sleeve. These bearings ensure that the horizontal swing support plate and the vehicle body can swing horizontally relative to each other, while also transmitting the torque of the horizontal swing support plate to the vehicle body, so that the vehicle body bears all the weight of the horizontal swing support plate. A horizontal swing hydraulic cylinder connects the vehicle body to the horizontal swing support plate. Under the action of hydraulic force, the piston of the horizontal swing hydraulic cylinder moves horizontally, causing the horizontal swing frame to swing horizontally, that is, the main and auxiliary flame generators to swing left and right. Two sets of driving and driven wheels are installed on the lower part of the vehicle body. The driving wheels are rigidly connected to the driven sprocket, which is mounted on the output shaft of the travel reducer. A chain connects the main and driven sprockets, ensuring the forward and backward movement of the vehicle body. This, in turn, allows the main and auxiliary flame generators to move forward and backward.

[0011] Potential safety hazards during high-temperature flame repair of the refractory lining of an industrial furnace, and how to address them: 1) Oxygen or gas concentrations may occur in the surrounding area. Fireworks must be strictly prohibited in certain areas of the work area, and air exchange between the area and the surrounding air must be strengthened. 2) The repair device must be shut down and its main and auxiliary flame generators removed from the high-temperature furnace chamber as soon as possible to prevent damage to the flame generators and gas delivery piping. During high-temperature flame repair of the refractory lining, although the flame generator and gas delivery piping are surrounded by ultra-high-temperature flames, high-velocity, room-temperature airflow within them cools the pipe walls, ensuring long-term operation. 3) The auxiliary flame is a premixed mixture of oxygen and gas, which is then rapidly emitted through multiple tiny apertures in the nozzle. This method of flame generation is widely used in industrial production and is a mature and proven method. Before use, perform a pre-combustion flame inspection, troubleshoot any problems promptly, and closely monitor the operation during operation. 4) Main flame generator flame flame flame prevention measures: The flame at the main flame generator outlet is designed to rotate strongly. This combustion method provides strong flame stability and is less susceptible to flameout, but it cannot guarantee flameout prevention. Furthermore, multiple auxiliary flame generator nozzles are arranged closely around the outer circumference of the nozzle, forming a cylindrical auxiliary flame. The main flame burns in the center of the flame barrel, completely preventing flameout. 5) Main flame generator flashback prevention measures: Auxiliary instrumentation, particularly mass flow controllers, precisely controls the ratio of oxygen and gas for combustion. Maintaining the axial velocity of the mixed gas within the nozzle far exceeds the flame combustion velocity is a fundamental flashback prevention measure. If flashback occurs due to an unforeseen event, such as the nozzle outlet being too close to the inner liner, the oxygen and gas mixture is blocked, resulting in flashback. Since the oxygen pressure in the delivery pipe is much greater than the gas pressure, flashback will inevitably flow back through the delivery gas pipe. This is when the flashback safety valve plays a critical role. The backfire safety valve has two functions: When the normal forward flow in the gas delivery pipe suddenly switches to an abnormal zero-direction or reverse flow, the valve immediately signals the shutdown of the oxygen and gas supply to the main flame generator, instantly and automatically cutting off any further backfire. When a flashback explosion occurs in the gas delivery pipe, generating excessively high pressure, the rubber safety diaphragm of the backfire safety valve ruptures first, relieving the pressure and protecting other parts of the equipment from damage. 6) Operator labor protection falls under the scope of production safety. High-temperature flame repair of the refractory lining is accompanied by strong light and high noise. Therefore, please ensure proper hearing and eye protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a front view of the refractory lining high temperature erosion repair device of the present invention;

[0013] Figure 2 This is a cross-sectional view of the main and auxiliary flame generators of the present invention taken along line AA;

[0014] Figure 3 yes Figure 1 BB cross-section diagram;

[0015] Figure 4 1. It is a top view of the refractory lining high temperature erosion repair device of the present invention;

[0016] Figure 5 yes Figure 4 CC cross-section diagram;

[0017] Figure 6 1. It is a schematic cross-sectional view of the structure of the anti-backfire safety valve of the present invention;

[0018] Figure 7 1 is a schematic cross-sectional view of the rotary sleeve synthesizer structure of the present invention;

[0019] Figure 8 It is a schematic cross-sectional view of the gas equalizer structure of the present invention.

[0020] In the picture:

[0021] 1. Car body 2. Wheel seat 3. Passive sprocket 4. Driving wheel 5. Chain 6. Travel reducer 7. Driving sprocket 8. Lower locking shaft 9. Vertical swing hydraulic cylinder 10. Upper locking shaft 11. Safety valve foot 12. Anti-backfire safety valve 13. Vertical swing frame 14. Rotating sleeve synthesizer 15. Positioning screw 16. Horizontal swing support plate 17. Driving gear 18. Anti-rotation frame 19. Gas equalizer 20. Heat insulation board 21. Passive wheel 22. Nozzle 23. Auxiliary outer sleeve 24. Auxiliary inner pipe 25. Rotating Conveying outer sleeve 26, inner nozzle seat 27, rotating conveying inner tube 28, spiral groove inner nozzle 29, nozzle seat 30, nozzle 31, horizontal swing positioning bearing 32, horizontal swing load-bearing bearing 33, bottom positioning plate 34, horizontal swing main shaft 35, horizontal swing support sleeve 36, bottom fixed plate 37, travel transmission shaft 38, horizontal swing seat 39, rear locating pin 40, main gas hose 41, horizontal swing hydraulic cylinder 42, main oxygen hose 43, front locating pin 44, side cover 45, vertical swing bearing 46, Vertical swing main shaft 47, rotary reducer 48, upper pressure plate 49, vertical plate 50, side positioning plate 51, gas collection pipe 52, fixed sealing ring 53, sealing ring pressure plate 54, fixing nut 55, rubber safety film 56, safety film pressure plate 57, nylon rod 58, anti-backflow flap 59, latch 60, flap fixing seat 61, contact frame 62, contact frame fixing seat 63, valve body 64, safety valve air inlet pipe 65, gas air inlet pipe 66, rear positioning sleeve 67, rear cover 68, gas sealing ring 69, sealing inner ring 7 0, bearing positioning sleeve 71, outer sleeve 72, oxygen inlet pipe 73, intermediate sleeve 74, oxygen sealing ring 75, inner rotating tube 76, outer rotating tube 77, sealing outer ring 78, rotating support bearing 79, front cover 80, key 81, passive gear 82, round nut 83, pressing nut 84, rear end cover 85, isolation ring 86, equalizer bearing 87, positioning retaining ring 88, anti-rotation steel pipe 89, gas auxiliary pipe 90, gas distribution core 91, oxygen supply auxiliary pipe 92, equalizer sealing ring 93, equalizer outer sleeve 94, transition sleeve DETAILED DESCRIPTION

[0022] The present invention will be further described with reference to the accompanying drawings and embodiments:

[0023] like Figure 1 、 2As shown, during flame repair of the refractory lining of an industrial furnace, the flames generated by the high-temperature erosion repair device for the refractory lining heat the lining wall. These flames are the main flame and the auxiliary flame. The main flame is formed by the rotating sleeve combiner 14, which provides oxygen and fuel gas carrying fluidized powdered repair material. These gases are transported to the main flame generator via the inner and outer layers of the main double-layer sleeve, respectively, consisting of a rotating inner conveyor tube 27 and a rotating outer conveyor tube 25. The fuel gas is in the inner layer, and the oxygen is in the outer layer. The rotating outer conveyor tube 25 is connected to the nozzle holder 29, to which the nozzle 30 is connected. The inner nozzle holder 26 is connected to the rotating inner conveyor tube 27, and the spiral groove nozzle 28 is mounted on the inner nozzle holder 26. High-pressure oxygen flows from the rotating inner conveyor tube 27 and the rotating outer conveyor tube 25, forming the outer layer of the sleeve, into the spiral groove between the spiral groove nozzle 28 and the nozzle holder 29, and is ejected into the nozzle 30. The oxygen is then converted from high pressure to normal pressure and rotates at high speed. Gas carrying fluidized powdered repair material travels from a rotating inner tube 27 through the inner nozzle holder 26, then through the spirally grooved nozzle 28, and into the nozzle 30. Within the nozzle 30, the high-speed, rotating oxygen gas thoroughly mixes with the fluidized powdered repair material. The mixed gas, ejected from the nozzle 30 in a highly swirling state, burns, generating a high-temperature flame reaching nearly 3000°C, heating the refractory lining to a molten state. The flame repair material, similarly ejected from the nozzle 30 in a highly swirling state, spreads across the refractory lining and adheres to it, achieving the flame repair goal. Auxiliary flame formation: Oxygen and gas, provided by the gas distributor 19, are simultaneously delivered to respective nozzles 22 via multiple sets of auxiliary double-layered tubing. Each set of auxiliary double-layered tubing, consisting of an auxiliary outer tube 23 and an auxiliary inner tube 24, transports gas through the inner layer and oxygen through the outer layer. As it approaches the nozzle 22, the inner and outer layers merge, and the oxygen and gas mix, then transported to the nozzle 22 via the auxiliary outer tube 23. The multiple micro-diameter holes on the nozzle 22 spray out a mixture of oxygen and fuel gas, which burns to produce a high-temperature auxiliary flame.

[0024] like Figure 1 、 3As shown in Figures 4 and 5, the refractory lining high temperature erosion repair device is an implementation method for achieving forward and reverse rotation movement, up, down, left and right all-round swinging, and forward and backward movement of the main and auxiliary flame generators. The vertical swing frame 13 has upper and lower layers. The rotary reducer 47 provides rotational power and is installed on the lower layer of the vertical swing frame 13. The rotating sleeve synthesizer 14 is locked on the upper layer of the vertical swing frame 13 through the upper pressure plate 48. The driving gear 17 is installed on the output shaft of the rotary reducer 47, and the passive gear 81 of the rotating sleeve synthesizer 14 is engaged with the driving gear 17, thereby realizing the forward and reverse rotation movement of the main and auxiliary flame generators. The anti-backfire safety valve 12 is installed on the safety valve foot 11, and the safety valve foot 11 is connected to the vertical swing frame 13 as a whole. The vertical swing main shaft 46 is integrally connected to the vertical swing frame 13, with vertical swing bearings 45 mounted at both ends. Side positioning plates 50 are connected to the ends of the vertical swing main shaft 46 and press against the inner ring side of the vertical swing bearing 45, providing axial positioning. The outer ring of the vertical swing bearing 45 is mounted in a corresponding hole in the vertical plate 49. The side cover 44 is connected to the side of the vertical plate 49 and presses against the outer ring side of the vertical swing bearing 45, also providing axial positioning. The vertical plate 49 is integrally connected to the horizontal swing support plate 16, forming a support frame supported by positioning screws 15. One end of the vertical swing hydraulic cylinder 9 is hinged to the rear end of the vertical swing frame 13 via the upper locking shaft 10. The other end of the vertical swing hydraulic cylinder 9 is hinged to the rear end of the horizontal swing support plate 16 via the lower locking shaft 8. The piston of the vertical swing hydraulic cylinder 9 moves, causing the vertical swing frame 13 to hinge at the support point of the vertical plate 49, achieving up and down swing of the main and auxiliary flame generators. The horizontal swing support sleeve 35 is integrally connected to the vehicle body 1 via the bottom fixing plate 36. The upper and lower inner holes of the horizontal swing support sleeve 35 respectively house the outer rings of the horizontal swing load-bearing bearing 32 and the horizontal swing positioning bearing 31. The horizontal swing support plate 16 is integrally connected to the horizontal swing main shaft 34. The inner rings of the horizontal swing load-bearing bearing 32 and the horizontal swing positioning bearing 31 are mounted on the horizontal swing main shaft 34. The bottom positioning plate 33 is connected to the end of the horizontal swing main shaft 34, pressing against the side surface of the inner ring of the horizontal swing positioning bearing 31 to axially locate the horizontal swing support sleeve 35 and the horizontal swing main shaft 34. The horizontal swing seat 38 is integrally connected to the vehicle body 1. One end of the horizontal swing hydraulic cylinder 41 is hinged to the horizontal swing seat 38 via the rear positioning pin 39. The other end of the horizontal swing hydraulic cylinder 41 is hinged to a hole in the side panel of the horizontal swing support plate 16 via a front locating pin 43. The piston of the horizontal swing hydraulic cylinder 41 moves, causing the horizontal swing support plate 16 to swing about the horizontal swing main shaft 34, achieving left and right swing of the main and auxiliary flame generators. The front and rear wheel seats 2 are mounted on the bottom of the front and rear ends of the vehicle body 1, respectively. The driven wheel 21 is mounted in the front wheel seat 2, and the driving wheel 4 is mounted in the rear wheel seat 2. The driving wheel 4 is integrally connected to the driven sprocket 3 via a travel drive shaft 37.The travel reducer 6 is mounted on the vehicle body 1, and the driving sprocket 7 is mounted on its output shaft. A chain 5 transmits torque between the driving sprocket 7 and the driven sprocket 3. Rotation of the travel reducer 6's output shaft causes the driving wheels 4 to rotate on the track, moving the primary and secondary flame generators forward and backward. A heat shield 20 is mounted at the front end of the vehicle body 1 to prevent high-temperature radiation from reaching the refractory lining high-temperature erosion repair device.

[0025] like Figure 1 、 4 As shown in Figures 6 and 7, the anti-backfire safety valve 12 receives gas carrying fluidized powdered repair material, which is supplied to the safety valve inlet pipe 64 via the main gas hose 40 and enters the interior of the anti-backfire safety valve 12. The anti-backflush flap 58 is hingedly connected by a latch 59 and supported at the hinge, allowing it to rotate. When the gas flow is in a forward direction, the anti-backflush flap 58 flips upward, allowing smooth gas flow. When there is no gas flow, i.e., zero-direction or reverse flow, the anti-backflush flap 58 flips down. This prevents reverse gas flow from flowing back into the safety valve inlet pipe 64 and contacts the contact holder 61 on the side of the anti-backflush flap 58, signaling abnormal production operations. Within the anti-backfire safety valve 12, the gas carrying fluidized powdered repair material is collected by the gas collection pipe 51. From there, the gas flow enters the connected gas inlet pipe 65 and reaches the rotating sleeve combiner 14. Nylon rod 57 is integrally connected to valve body 63 via fixing nut 54. Mounted on nylon rod 57 is a flap mount 60 that supports latch 59. Similarly, mounted on nylon rod 57 is a contact mount mount 62 that supports contact mount 61. The valve body 63 connects to the sealing ring pressure plate 53, which holds the sealing ring 52 in place to prevent gas leakage from the backfire safety valve 12. A rubber safety membrane 55 is located between the sealing ring pressure plate 53 and the safety membrane pressure plate 56. When backfire and deflagration occur within the gas pipeline, increasing pressure causes the rubber safety membrane 55 to rupture first, releasing pressure.

[0026] like Figure 1 、 2As shown in Figures 4 and 7, the rotating sleeve combiner 14 receives oxygen and fuel gas carrying fluidized powdered repair material, delivered separately from two pipes, and converts them into a main double-sleeve conveyor system, with fuel gas in the inner layer and oxygen in the outer layer. The fuel gas carrying fluidized powdered repair material is output by the anti-backfire safety valve 12, enters the fuel gas inlet pipe 65, passes through the rear cover 67, and enters the inner rotating pipe 75, then enters the rotating inner pipe 27, the inner layer of the main double-sleeve conveyor system. The fuel gas inlet pipe 65 is fixedly connected to the rear cover 67 and is the non-rotating portion, while the inner rotating pipe 75 is fixedly connected to the rotating inner pipe 27 and is the rotating portion. The connection between the rear cover 67 and the inner rotating pipe 75 forms a joint between the non-rotating and rotating components, with a gas seal 68 at the joint to prevent fuel gas leakage. Oxygen is supplied to the oxygen inlet pipe 72 via the main oxygen hose 42 and first enters the annular cavity formed by the intermediate sleeve 73 and the outer rotating pipe 76. The middle sleeve 73 is connected to the outer sleeve 71 as a whole and is non-rotatable. The outer rotating tube 76 is a rotating body. The relative rotating contact surface between the middle sleeve 73 and the outer rotating tube 76 is equipped with an oxygen sealing ring 74 to prevent oxygen leakage from the rotating contact surface. Oxygen in the annular cavity formed by the middle sleeve 73 and the outer rotating tube 76 enters the sleeve layer between the outer rotating tube 76 and the inner rotating tube 75 through multiple groups of through holes on the outer rotating tube 76. Through the connection between the outer rotating tube 76 and the rotating conveying outer sleeve 25, oxygen enters the space between the rotating conveying outer sleeve 25 and the rotating conveying inner tube 27 for transportation, that is, the outer layer of the main double-layer sleeve transportation. The contact surface between the outer rotating tube 76 and the inner rotating tube 75 is connected by an interference fit, and the rear end is welded together to transmit torque and prevent oxygen leakage. A set of rotational support bearings 78 are provided at the front and rear. Their inner rings fit onto the outer circumference of the outer rotating tube 76, while their outer rings fit within the inner bore of the outer sleeve 71, ensuring concentricity between the inner and outer circumferences of the outer rotating tube 76 and relative rotation between them. A round nut 82 is threadedly connected to the outer rotating tube 76. Tightening the round nut 82 axially compresses the driven gear 81, which in turn compresses the inner ring of the rotational support bearing 78 at the front end. The driven gear 81 is integrally connected to the outer rotating tube 76 via a key 80, allowing it to transmit torque to the outer rotating tube 76. A front cover 79 is connected to the front end of the outer sleeve 71, compressing the outer ring of the rotational support bearing 78 at the front end. A rear locating sleeve 66 is integrally connected to the rear end of the outer rotating tube 76, compressing the inner ring of the rotational support bearing 78 at the rear end. A rear cover 67 is connected to the rear end of the outer sleeve 71, compressing the outer ring of the rotational support bearing 78 at the rear end. The inner sides of the outer rings of the front and rear rotary support bearings 78 are positioned by the ends of their respective bearing positioning sleeves 70, and the other ends of the bearing positioning sleeves 70 are pressed against the side ends of the intermediate sleeve 73. The sealing inner ring 69 and the sealing outer ring 77 seal the lubricating oil of the front and rear rotary support bearings 78 to prevent lubricating oil leakage.

[0027] like Figure 1 、 2As shown in Figure 8, the gas equalizer 19 receives oxygen and fuel gas delivered by two pipes respectively, and converts them into multiple sets of auxiliary double-layer sleeves for delivery, with fuel gas in the inner layer and oxygen in the outer layer. The oxygen supply auxiliary pipe 91 is connected to the equalizer outer sleeve 93, and the external oxygen is delivered by the oxygen supply auxiliary pipe 91 to the oxygen chamber composed of the equalizer outer sleeve 93 and the gas distribution core 90. The fuel gas auxiliary pipe 89 is connected to the equalizer outer sleeve 93, and the external fuel gas is delivered by the fuel gas auxiliary pipe 89 to the fuel gas chamber composed of the equalizer outer sleeve 93 and the gas distribution core 90. The gas distribution core 90 is rigidly connected to the rotating outer sleeve 25, and moves synchronously and rotates together, while the equalizer outer sleeve 93 does not rotate. The multi-channel equalizer sealing ring 92 is installed on the contact surface between the gas distribution core 90 and the equalizer outer sleeve 93 to prevent the oxygen in the oxygen chamber and the fuel gas in the fuel gas chamber from leaking separately. Each set of auxiliary double-layer casings, consisting of an auxiliary outer sleeve 23 and an auxiliary inner sleeve 24, has a fuel gas chamber connected to the inner layers of multiple sets of auxiliary double-layer casings, from which fuel gas is transported, and an oxygen chamber connected to the outer layers of multiple sets of auxiliary double-layer casings, from which oxygen is transported. A transition sleeve 94 serves as an intermediate transition, connecting each set of auxiliary outer sleeves 23 to the gas distribution core 90, while the auxiliary inner sleeve 24 is directly connected to the gas distribution core 90. Concentricity and relative rotation between the divider outer sleeve 93 and the gas distribution core 90 are ensured by two sets of divider bearings 86. A spacer ring 85 determines the distance between the two divider bearings 86, and a rear end cap 84 seals the divider bearings 86. A compression nut 83 is threadedly connected to the gas distribution core 90. Tightening the compression nut 83 through the rear end cap 84 compresses the inner race of the divider bearing 86, securing its axial position within the gas distribution core 90. Positioning spring 87 engages within the slot of the equalizer housing 93, blocking the outer ring of the equalizer bearing 86 and ensuring the axial alignment of the equalizer housing 93 with the gas distribution core 90. An anti-rotation steel tube 88 is connected to the equalizer housing 93 and inserted into the anti-rotation hole of the anti-rotation bracket 18, which is integrally connected to the vertical swing bracket 13. This ensures that the equalizer housing 93 does not rotate with the gas distribution core 90, but can move with it.

Claims

1. Refractory lining high temperature corrosion repair device, characterized by The invention comprises a vehicle body (1), a wheel seat (2), a passive sprocket (3), a driving wheel (4), a chain (5), a travel reducer (6), a driving sprocket (7), a lower locking shaft (8), a vertical swing hydraulic cylinder (9), an upper locking shaft (10), a safety valve foot (11), an anti-tempering safety valve (12), a vertical swing frame (13), a rotating sleeve synthesizer (14), a positioning screw (15), a horizontal swing support plate (16), a driving gear (17), an anti-rotation frame (18), a gas equalizer (19), a heat shield (20), a passive wheel (21), a nozzle (22), an auxiliary outer sleeve (23), an auxiliary inner pipe (24), a rotating Conveying outer sleeve (25), inner nozzle seat (26), rotating conveying inner tube (27), spiral groove inner nozzle (28), nozzle seat (29), nozzle (30), horizontal swing positioning bearing (31), horizontal swing load-bearing bearing (32), bottom positioning plate (33), horizontal swing main shaft (34), horizontal swing support sleeve (35), bottom fixing plate (36), travel transmission shaft (37), horizontal swing seat (38), rear positioning pin (39), main gas hose (40), horizontal swing hydraulic cylinder (41), main oxygen hose (42), front positioning pin (43), side cover (44), vertical swing bearing (45), vertical swing main shaft (46), rotary reducer (47), upper pressure plate (48), vertical plate (49), side positioning plate (50), gas collection pipe (51), fixed sealing ring (52), sealing ring pressure plate (53), fixed nut (54), rubber safety film (55), safety film pressure plate (56), nylon rod (57), anti-backflush flap (58), latch (59), flap fixing seat (60), contact frame (61), contact frame fixing seat (62), valve body (63), safety valve air inlet pipe (64), gas air inlet pipe (65), rear positioning sleeve (66), rear cover (67), gas sealing ring (68), sealing inner ring (69), bearing fixing Position sleeve (70), outer sleeve (71), oxygen inlet pipe (72), intermediate sleeve (73), oxygen sealing ring (74), inner rotating pipe (75), outer rotating pipe (76), sealing outer ring (77), rotary support bearing (78), front cover (79), key (80), passive gear (81), round nut (82), pressing nut (83), rear end cover (84), isolation ring (85), equalizer bearing (86), positioning retaining ring (87), anti-rotation steel pipe (88), fuel gas auxiliary pipe (89), gas distribution core (90), oxygen supply auxiliary pipe (91), equalizer sealing ring (92), equalizer outer sleeve (93), transition sleeve (94); The oxygen and the gas carrying the fluidized powdered repair material provided by the rotating sleeve synthesizer (14) are respectively transported to the main flame generator through the inner and outer layers of the main double-layer sleeve composed of the rotating conveying inner tube (27) and the rotating conveying outer sleeve (25), with the gas in the inner layer and the oxygen in the outer layer; the rotating conveying outer sleeve (25) is connected to the nozzle seat (29), and the nozzle (30) is connected to the nozzle seat (29); the inner nozzle seat (26) is connected to the rotating conveying inner tube (27), and the spiral groove inner nozzle (28) is installed on the inner nozzle seat (26); the high-pressure oxygen is transported from the rotating conveying inner tube (27) and the rotating conveying outer sleeve (25) to form the outer layer of the sleeve, and enters the spiral groove inner nozzle (28) and the nozzle seat (29) between the spiral groove inner nozzle (28) and the nozzle seat (29). out and enter the nozzle (30); oxygen is converted from high pressure to normal pressure and rotates at high speed; the gas carrying fluidized powdered repair material passes through the inner nozzle seat (26) and then passes through the nozzle (28) in the spiral groove and enters the nozzle (30); in the nozzle (30), the high-speed rotating oxygen and the gas carrying fluidized powdered repair material are fully mixed, and the mixed flow is ejected from the nozzle (30) in a strong rotating state and burned; the flame repair material is also ejected from the nozzle (30) in a strong rotating state along with the mixed flow; the oxygen and gas provided by the gas divider (19) are simultaneously transported to the respective nozzles (22) through multiple sets of auxiliary double-layer sleeves; each set of auxiliary double-layer sleeves composed of an auxiliary outer sleeve (23) and an auxiliary inner pipe (24) is The casing has the fuel gas in the inner layer and the oxygen in the outer layer; when approaching the nozzle (22), the inner and outer layers merge, the oxygen and fuel gas are mixed, and are transported to the nozzle (22) by the auxiliary outer casing (23); a plurality of micro-diameter holes on the nozzle (22) eject the oxygen and fuel gas mixture, and the combustion produces a high-temperature auxiliary flame; the vertical swing frame (13) has an upper and a lower two layers, the rotary reducer (47) provides the rotary power and is installed on the lower layer of the vertical swing frame (13); the rotary casing synthesizer (14) is locked on the upper layer of the vertical swing frame (13) through the upper pressure plate (48); the driving gear (17) is installed on the output shaft of the rotary reducer (47), and the driven gear (81) of the rotary casing synthesizer (14) is meshed with the driving gear (17). Thus, the forward and reverse rotation motion of the main and auxiliary flame generators is realized; the anti-backfire safety valve (12) is installed on the safety valve foot (11), and the safety valve foot (11) is connected to the vertical swing frame (13) as a whole; the vertical swing main shaft (46) is connected to the vertical swing frame (13) as a whole, and vertical swing bearings (45) are installed at both ends thereof, and the side positioning plate (50) is connected to the end of the vertical swing main shaft (46) and presses the inner ring side of the vertical swing bearing (45) to play an axial positioning role; the outer ring of the vertical swing bearing (45) is installed in the corresponding hole of the vertical plate (49), and the side cover (44) is connected to the side of the vertical plate (49) and presses the outer ring side of the vertical swing bearing (45) to also play an axial positioning role;The vertical plate (49) and the horizontal swing support plate (16) are connected as a whole, and a support frame is formed through a positioning screw (15) to support the vertical swing frame (13); one end of the vertical swing hydraulic cylinder (9) is hinged to the rear end of the vertical swing frame (13) through an upper locking shaft (10); the other end of the vertical swing hydraulic cylinder (9) is hinged to the rear end of the horizontal swing support plate (16) through a lower locking shaft (8); the piston of the vertical swing hydraulic cylinder (9) moves, so that the vertical swing frame (13) is hinged at the support point of the vertical plate (49), so that the main and auxiliary flame generators can swing up and down; the horizontal swing support sleeve (35) is connected to the bottom fixed plate ( 36) is connected to the vehicle body (1) as a whole, and the upper and lower inner holes of the horizontal swing support sleeve (35) are respectively installed with the outer rings of the horizontal swing load-bearing bearing (32) and the horizontal swing positioning bearing (31); the horizontal swing support plate (16) is connected to the horizontal swing main shaft (34) as a whole, and the inner rings of the horizontal swing load-bearing bearing (32) and the horizontal swing positioning bearing (31) are installed on the horizontal swing main shaft (34); the bottom positioning plate (33) is connected to the end of the horizontal swing main shaft (34), pressing the inner ring side of the horizontal swing positioning bearing (31) to axially position the horizontal swing support sleeve (35) and the horizontal swing main shaft (34); The horizontal swing seat (38) is connected to the vehicle body (1) as a whole. One end of the horizontal swing hydraulic cylinder (41) is hinged to the horizontal swing seat (38) through a rear positioning pin (39); the other end of the horizontal swing hydraulic cylinder (41) is hinged to a hole on a side plate of the horizontal swing support plate (16) through a front positioning pin (43); the piston of the horizontal swing hydraulic cylinder (41) moves, so that the horizontal swing support plate (16) swings with the horizontal swing main shaft (34) as a fulcrum, thereby achieving left and right swing of the main and auxiliary flame generators; the front and rear wheel seats (2) are respectively installed at the bottom of the front and rear ends of the vehicle body (1), and the passive wheel ( 21), a driving wheel (4) is installed in the rear wheel seat (2); the driving wheel (4) is connected to the passive sprocket (3) through a travel transmission shaft (37); a travel reducer (6) is installed on the vehicle body (1), and a driving sprocket (7) is installed on the output shaft of the travel reducer (6). A chain (5) transmits torque between the driving sprocket (7) and the passive sprocket (3); the rotation of the output shaft of the travel reducer (6) causes the driving wheel (4) to rotate on the track, so that the main and auxiliary flame generators move forward and backward; a heat insulation board (20) is installed at the front end of the vehicle body (1) to prevent high temperature radiation from the refractory lining high temperature corrosion repair device.

2. The refractory lining high temperature erosion repair device according to claim 1 is characterized in that: The anti-backfire safety valve (12) includes the components that receive the gas carrying the fluidized powdered repair material, and provide it to the safety valve inlet pipe (64) through the main gas hose (40), and enter the inner cavity of the anti-backfire safety valve (12); the anti-backflush flap (58) is hinged by the pin (59), and is supported by the hinge and can be flipped; when the gas flow is a positive flow, the anti-backflush flap (58) flips upward, and the gas flows smoothly; when there is no gas flow, that is, when there is an O direction or reverse flow, the anti-backflush flap (58) flips down, on the one hand, preventing the reverse gas flow from flowing back into the safety valve inlet pipe (64), and on the other hand, the side of the anti-backflush flap (58) contacts the contact of the contact frame (61), sending a signal that the production operation is abnormal; in the cavity of the anti-backfire safety valve (12), the gas carrying the fluidized powdered repair material is connected to the gas collection pipe ( 51) is collected, and the air flow enters the gas inlet pipe (65) connected thereto from the gas collecting pipe (51) and reaches the rotating sleeve synthesizer (14); the nylon rod (57) is connected to the valve body (63) as a whole through the fixing nut (54), and the nylon rod (57) is equipped with a flap fixing seat (60) supporting the latch (59), and the nylon rod (57) is also equipped with a contact frame fixing seat (62) supporting the contact frame (61); the valve body (63) is connected to the sealing ring pressure plate (53) at the end face, and a fixed sealing ring (52) is provided to prevent gas leakage in the cavity of the anti-backfire safety valve (12); a rubber safety film (55) is provided between the sealing ring pressure plate (53) and the safety film pressure plate (56); when backfire and deflagration occur in the gas transmission pipeline, the pressure increases, and the rubber safety film (55) is first ruptured to release the pressure.

3. The refractory lining high temperature erosion repair device according to claim 1 is characterized by: The invention comprises a rotating sleeve synthesizer (14) for receiving oxygen and gas carrying fluidized powdered repair materials respectively delivered by two pipes, and converting them into gas for main double-layer sleeve transportation; the gas carrying fluidized powdered repair materials is output by the anti-backfire safety valve (12), enters from the gas inlet pipe (65), passes through the rear cover (67), reaches the inner rotating pipe (75), and then enters the rotating conveying inner pipe (27), i.e., the inner layer of the main double-layer sleeve transportation; the gas inlet pipe (65) is fixedly connected to the rear cover (67), which is a non-rotating part; the inner rotating pipe (75) is fixedly connected to the rotating conveying inner pipe (27), which is a rotating part; the connection between the rear cover (67) and the inner rotating pipe (75) is a docking of the non-rotating component and the rotating component, The joint is sealed with a gas sealing ring (68) to prevent gas leakage; oxygen is provided to the oxygen inlet pipe (72) through the main oxygen hose (42) and first reaches the annular cavity composed of the intermediate sleeve (73) and the outer rotating tube (76); the intermediate sleeve (73) and the outer sleeve (71) are connected as a whole and are non-rotatable; the outer rotating tube (76) is a rotating body, and the relatively rotating contact surface of the intermediate sleeve (73) and the outer rotating tube (76) is equipped with an oxygen sealing ring (74) to prevent oxygen from leaking from the rotating contact surface; oxygen enters the annular cavity composed of the intermediate sleeve (73) and the outer rotating tube (76) through multiple groups of through holes on the outer rotating tube (76) and enters the sleeve layer between the outer rotating tube (76) and the inner rotating tube (75); The outer rotating tube (76) is connected to the rotating conveying outer sleeve (25), and oxygen enters the rotating conveying outer sleeve (25) and the rotating conveying inner tube (27) for transportation, that is, the outer layer of the main double-layer sleeve transportation; the contact surface between the outer rotating tube (76) and the inner rotating tube (75) is connected by interference fit, and the rear end is welded as a whole to transmit torque and prevent oxygen leakage; a set of rotating support bearings (78) are provided at the front and rear, the inner ring of which is assembled on the outer circle of the outer rotating tube (76), and the outer ring is assembled in the inner hole of the outer sleeve (71), ensuring the concentricity of the inner circle of the outer sleeve (71) and the outer circle of the outer rotating tube (76), as well as the relative rotation between them; the round nut (82) is threadedly connected to the outer rotating tube (76), and the round nut is tightened. (82) presses the passive gear (81) in the axial direction, and the passive gear (81) presses the inner ring of the front end rotation support bearing (78); the passive gear (81) is connected to the outer rotation tube (76) as a whole through the key (80), and the passive gear (81) can transmit torque to the outer rotation tube (76); the front cover (79) is connected to the front end of the outer sleeve (71), and the front cover (79) presses the outer ring of the front end rotation support bearing (78); the rear positioning sleeve (66) is connected to the rear end of the outer rotation tube (76) as a whole, and the rear positioning sleeve (66) presses the inner ring of the rear end rotation support bearing (78); the rear cover (67) is connected to the rear end of the outer sleeve (71), and the rear cover (67) presses the outer ring of the rear end rotation support bearing (78);The inner sides of the outer rings of the front and rear rotary support bearings (78) are positioned by the ends of their respective bearing positioning sleeves (70), and the other ends of the bearing positioning sleeves (70) are pressed against the side ends of the intermediate sleeves (73); the sealing inner ring (69) and the sealing outer ring (77) seal the lubricating oil of the front and rear rotary support bearings (78) to prevent the lubricating oil from leaking.

4. The refractory lining high temperature erosion repair device according to claim 1, characterized in that: The gas equalizer (19) includes the components described above, which receive oxygen and fuel gas respectively delivered by two pipes and convert them into multiple sets of auxiliary double-layer sleeves for delivery; the oxygen delivery auxiliary pipe (91) is connected to the equalizer outer jacket (93), and the external oxygen is delivered by the oxygen delivery auxiliary pipe (91) to the oxygen cavity composed of the equalizer outer jacket (93) and the gas distribution core (90); the fuel gas auxiliary pipe (89) is connected to the equalizer outer jacket (93), and the external fuel gas is delivered by the fuel gas auxiliary pipe (89) to the fuel gas cavity composed of the equalizer outer jacket (93) and the gas distribution core (90); the gas distribution core (90) is connected to the rotating conveying outer jacket (93) The sleeves (25) are rigidly connected, move synchronously, and rotate together, while the divider jacket (93) does not rotate; a multi-channel divider sealing ring (92) is installed on the contact surface between the gas distribution core (90) and the divider jacket (93) to prevent the oxygen in the oxygen chamber and the gas in the gas chamber from leaking separately; each set of auxiliary double-layer sleeves composed of an auxiliary outer sleeve (23) and an auxiliary inner tube (24), the gas chamber is connected to the inner layer of multiple sets of auxiliary double-layer sleeves, and the gas is transported from the inner layer, and the oxygen chamber is connected to the outer layer of multiple sets of auxiliary double-layer sleeves, and the oxygen is transported from the outer layer; the transition sleeve (94) plays an intermediate transition role, connecting each set of auxiliary outer sleeves (23) is connected to the gas distribution core (90), and the auxiliary inner tube (24) is directly connected to the gas distribution core (90); the concentricity and relative rotation between the equalizer outer sleeve (93) and the gas distribution core (90) are guaranteed by two sets of equalizer bearings (86); the isolation ring (85) determines the distance between the two sets of equalizer bearings (86), and the rear end cover (84) has a sealing effect on the equalizer bearings (86); the clamping nut (83) is threadedly connected to the gas distribution core (90), and the clamping nut (83) is tightened through the rear end cover (84) to compress the inner ring of the equalizer bearing (86) , so that the axial positioning of the divider bearing (86) on the gas distribution core (90) is determined; the positioning spring (87) is stuck in the groove of the divider outer sleeve (93), blocking the outer ring of the divider bearing (86), so that the axial positioning of the divider outer sleeve (93) and the gas distribution core (90) is determined; the anti-rotation steel pipe (88) is connected to the divider outer sleeve (93), and the anti-rotation steel pipe (88) is inserted into the anti-rotation hole of the anti-rotation frame (18), and the anti-rotation frame (18) is connected to the vertical swing frame (13) as a whole; it is ensured that the divider outer sleeve (93) does not rotate with the gas distribution core (90), but can move together.

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