Flue water jacket anti-corrosion device

Abstract

The utility model provides a flue water jacket anti-corrosion device, and particularly relates to the field of industrial flue corrosion prevention. In order to solve the problems that anti-corrosion materials are likely to be softened and fall off and are difficult to replace and the like, the anti-corrosion device of the flue water jacket comprises a protective cover arranged on the inner wall of the flue water jacket, the protective cover is of a detachable structure which is hollow up and down, and a net-shaped structure is arranged on the inner wall of the protective cover. And an anti-corrosion and anti-high-temperature coating is arranged on the net- According to the device, through innovative structural design and material application, direct contact between smoke and the water jacket is effectively isolated, the influence of corrosive media is reduced, and therefore the corrosion resistance of the water jacket is remarkably improved, and the service life of the water jacket is remarkably prolonged.

Description

Technical Field

[0001] The utility model relates to the field of industrial flue corrosion prevention, and particularly relates to a flue water jacket anti-corrosion device. Background Art

[0002] During the smelting process of metallurgical furnaces, the flue system is an important component for discharging the waste gas generated by combustion. Currently, the flue at the smoke outlet generally adopts the water-cooled wall or water jacket mode of a waste heat boiler. The water jacket mode uses ordinary steel materials. Although the cost is relatively low, in a high-temperature and corrosive environment, the steel is easily corroded, resulting in problems such as perforation and water leakage of the water jacket. This not only affects the normal operation of the flue but may also cause safety accidents, resulting in environmental pollution and economic losses. This kind of corrosion mainly comes from two aspects: one is the corrosive substances in the flue gas, and the other is the corrosive effect of the condensed water inside the water jacket.

[0003] To solve this problem, currently, people try to apply anti-corrosion materials on the inner surface of the water jacket. However, this method has certain limitations: in the high-temperature environment of the flue, the anti-corrosion materials may undergo thermal degradation or softening, resulting in a decline in their performance or even direct peeling off. When the anti-corrosion materials fail, it is necessary to repair the water jacket or replace the anti-corrosion layer, which is particularly difficult in the narrow and inaccessible space of the flue, increasing the maintenance cost and downtime. Moreover, the anti-corrosion materials may not form a uniform protective layer at the joints of the water jacket. Due to stress concentration and unevenness at the joints, the anti-corrosion materials are more likely to crack or peel off in these areas, thus becoming the starting point of corrosion. Summary of the Utility Model

[0004] Aiming at the problems such as the possible softening and peeling off of the anti-corrosion materials and the difficulty in replacing the anti-corrosion materials mentioned above, the utility model aims to provide a flue water jacket anti-corrosion device. Through innovative structural design and material application, the device of the utility model effectively isolates the direct contact between the flue gas and the water jacket, reduces the influence of corrosive media, and thus significantly improves the corrosion resistance and service life of the water jacket.

[0005] The main idea of the technical solution adopted by the utility model: The device is provided with a detachable protective cover, which is not only convenient for connecting with the flue water jacket but also can be disassembled when the coating needs to be replaced. Moreover, by welding a mesh structure on the inner wall of the protective cover and pouring an anti-corrosion and high-temperature-resistant coating into the mesh structure, the stability of the anti-corrosion and high-temperature-resistant coating is improved. In addition, the device is designed with a sliding installation mechanism, and the installation and separation of the protective cover and the flue water jacket are realized through the cooperation of a chute and a slider.

[0006] The technical purpose of the utility model is achieved through the following technical solutions:

[0007] A corrosion prevention device for a flue water jacket, comprising a protective cover arranged on the inner wall of the flue water jacket. The protective cover is a detachable structure with upper and lower openings. A mesh structure is arranged on the inner wall of the protective cover, and an anti-corrosion and high-temperature resistant coating is arranged on the mesh structure.

[0008] To achieve the above technical solution, a further preferred solution is: The protective cover includes two end plates and two side plates arranged opposite to each other. One adjacent end plate and the side plate are detachably connected through a locking component.

[0009] Furthermore, the locking component includes a fixing piece arranged inside the side plate and extending outward, and a plug rod piece arranged on the end plate adjacent to the side plate and perpendicularly inserted into the fixing piece.

[0010] Through the above technical solution, further, the protective cover is slidably connected to the inner wall of the flue water jacket.

[0011] Furthermore, a chute is arranged on the outer side of the side plate, and a slider is arranged at the corresponding position on the inner wall of the flue water jacket. The slider is slidably connected to the chute.

[0012] Still further, at least one handle is arranged on the top of the side plate.

[0013] By adopting the above technical solution, the present utility model has the following technical effects: By combining the mesh structure with the anti-corrosion and high-temperature resistant coating, it is beneficial to the uniform distribution and curing of the anti-corrosion and high-temperature resistant coating, and also improves the stability of the anti-corrosion and high-temperature resistant coating, effectively preventing the erosion of corrosive substances and high temperature in the flue gas on the water jacket.

[0014] By setting a sliding installation mechanism, the process of replacing the coating is made more rapid and convenient, reducing the time and labor intensity required for coating replacement, thereby reducing the overall maintenance cost. Moreover, the sliding device can reduce the exposure time of the staff during coating replacement and reduce the risk of injury or contact with harmful chemicals. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below.

[0016] Figure 1 It is a schematic diagram of the overall structure of a corrosion prevention device for a flue water jacket of the present utility model;

[0017] Figure 2 It is a schematic diagram of the overall structural decomposition of a corrosion prevention device for a flue water jacket and the flue water jacket;

[0018] Figure 3 It is a schematic diagram of the structure of the protective cover 2 of the present utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the turtleback mesh 3 of the present utility model;

[0020] Figure 5 This is a detailed view of the connection between the chute 221 and the slider 11 of the present utility model;

[0021] Figure 6 This is a detailed view of the locking member 23 of the present utility model;

[0022] Figure 7 This is a detailed view of the connection between the chute and the slider in Embodiment 2 of the present utility model;

[0023] In the figure, 1 - flue water jacket; 11 - slider; 111 - locking groove; 2 - protective cover; 21 - end plate; 22 - side plate; 221 - chute; 222 - handle; 223 - through hole; 224 - fixing seat; 225 - clamping block; 3 - mesh structure; 23 - locking member; 231 - fixing piece; 232 - plug rod member; 4 - anti - corrosion and high - temperature - resistant coating. Detailed implementation manners

[0024] Embodiment 1

[0025] Next, the technical solutions in the embodiments will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments, rather than all of the embodiments.

[0026] Reference Figures 1-6 , this application discloses an anti - corrosion device for a flue water jacket, including a protective cover 2 arranged on the inner wall of the flue water jacket 1. The protective cover 2 is slidably connected to the flue water jacket 1. A mesh structure 3 is arranged on the inner wall of the protective cover 2, and an anti - corrosion and high - temperature - resistant coating 4 is poured inside the mesh structure 3.

[0027] Specifically, the protective cover 2 is a detachable rectangular cuboid cavity with upper and lower openings, including two end plates 21 and two side plates 22 that are oppositely arranged between each other. The length and width of the end plates 21 and the side plates 22 should be customized according to the size of the flue water jacket 1, and the thickness is 10 mm to ensure that the protective cover 2 can fit the inner wall of the flue water jacket 1.

[0028] Specifically, a number of through holes 223 are arranged inside the connection side of each side plate 22 and the end plate 21. These through holes 223 penetrate the side plate 22 and are parallel to its length direction, with a depth of 30 mm. At the end of the through hole 223 far from the end plate 21, a fixing piece 231 is arranged. The fixing piece 231 can be a protruding columnar structure or other forms, and a threaded hole is arranged in its center.

[0029] Holes are provided at relative positions on the end plate 21, and these holes are aligned with the through holes 223 on the side plate 22 so as to insert the pin members 232. The pin members 232 are inserted through the holes on the end plate 21, pass through the through holes, and are connected to the fixing members 231. The pin members 232 can be bolts, pins or other rod-shaped connecting members, and their function is to fix the end plate 21 and the side plate 22 together.

[0030] It should be noted that the connection between the end plate 21 and the side plate 22 is designed to be detachable for easy maintenance and replacement of the anti-corrosion and high-temperature-resistant coating 4. The pin members 232 can be removed from the holes 221, thereby separating the end plate 21 and the side plate 22. And since the environment inside the inner wall of the flue water jacket 1 may have high temperature and corrosive gases, the end plate 21 and the side plate 22 should be made of high-temperature-resistant and corrosion-resistant materials such as stainless steel, titanium alloy or carbon steel with special coatings.

[0031] Such as Figures 2-3 , a sliding connection is adopted between the protective cover 2 and the flue water jacket 1 for easy installation and disassembly. Specifically, the connection method can adopt a guide rail and slider structure. A chute 221 is provided at the center position on the outer side of the side plate 22 of the protective cover 2, and corresponding sliders 11 are provided at the corresponding positions on the inner wall of the flue water jacket 1.

[0032] Specifically, the chute 221 is an overall U-shaped groove structure. The length of the chute 221 is equal to the height direction of the side plate 22 and is embedded in the outer side surface of the end plate 21, which means that the chute 221 will be flush with or slightly lower than the outer surface of the protective cover 2 to avoid increasing the size of the protective cover 2.

[0033] It should be noted that the chute 221 should be made of wear-resistant and corrosion-resistant materials such as stainless steel, alloy steel or other high-performance engineering plastics to resist the influence of high-temperature and corrosive environments. Its inner surface can be polished or coated to reduce the friction coefficient, improve the smoothness of sliding, and extend the service life.

[0034] The slider 11 is a cuboid and is fixedly connected to the inner wall of the protective cover 2. The slider 11 can also be designed in the shape of a flat plate, a convex platform, etc. that can fit the shape of the chute 221. The material of the slider 11 is similar to that of the chute 221 to ensure the compatibility and wear resistance between the two. At the same time, the material of the slider 11 should also have sufficient strength and rigidity to bear the weight of the protective cover 2 and the dynamic load during operation.

[0035] Specifically, the slider 11 can be connected to the bottom of the protective cover 2 by welding, bolt connection or other fixing methods. The connection method should ensure the stability of the slider 11 on the protective cover 2 to prevent displacement during the sliding process. A sealing strip is designed in the contact area between the chute 221 and the slider 11 to prevent corrosive gases or liquids from entering the sliding connection area and protect the chute and the slider from corrosion.

[0036] It should be noted that the sliding groove 221 and the slider 11 are slidably connected, and the slider 11 is fixed on the sliding groove 221 through a self-locking mechanism. When the slider 11 reaches the specified position, self-locking is achieved through the automatic locking mechanism to prevent accidental sliding or displacement of the plate.

[0037] Specifically, a guiding groove is provided on the sliding groove 221, and the width and depth of the guiding groove should match the size of the slider 11 to ensure that the slider 11 can smoothly enter the guiding groove and remain stable during the sliding process. The inner side wall of the sliding groove 221 is provided with a positioning groove for cooperating with the positioning buckle on the slider 11 to achieve the self-locking function.

[0038] The slider 11 is a rectangular block structure, and a guiding protrusion is provided at the bottom, which cooperates with the guiding groove of the sliding groove 221 to ensure smooth sliding of the slider 11 in the sliding groove. And an elastic positioning buckle is provided on the slider 11, and the buckle cooperates with the positioning groove in the sliding groove 221 during the sliding process. When the slider 11 slides to the specified position, the buckle automatically snaps into the positioning groove to achieve the self-locking function. The positioning buckle is made of elastic metal material to ensure its good elasticity and durability. The elastic positioning buckle on the slider 11 is pressed by the inner wall of the sliding groove during the sliding process. When it slides to the specified position, the buckle automatically snaps into the positioning groove in the sliding groove 221 to achieve self-locking. The design of the positioning buckle ensures that it can smoothly disengage from the positioning groove under the action of an external force to achieve the unlocking function.

[0039] In the initial state, the slider 11 is located at one end of the sliding groove 221, and the positioning buckle is in an unloaded state. When an external force acts on the plate, the slider 11 slides along the guiding groove in the sliding groove 221, and the guiding protrusion cooperates with the guiding groove to ensure smooth sliding. During the sliding process, the positioning buckle is pressed by the inner wall of the sliding groove 221 and gradually compressed. When the slider 11 slides to the specified position, the positioning buckle aligns with the positioning groove in the sliding groove 221, and the buckle automatically snaps into the positioning groove under the action of the elastic force to achieve self-locking and prevent the slider 11 from continuing to slide. When moving or adjusting the plate, the operator presses the unlocking button on the slider, and the positioning buckle disengages from the positioning groove under the action of an external force, and the slider 11 can continue to slide in the sliding groove 221.

[0040] As Figure 1 shown, two handles 222 are fixed on both sides of the upper part of the side plate 22 by bolts of M6 specification.

[0041] The handle 222 is made of nylon 66 (PA66) material, which has good wear resistance, self-lubrication and chemical stability, and is suitable for use in high-temperature and corrosive environments. The handle 222 is fixed on both upper sides of the side plate 22 by bolts of M6 specification. The bolts pass through the side plate 22 and are fastened with nuts to ensure the stability and firmness of the handle 222. In addition, grooves are designed on the inner side of the handle 222 to fit the shape of the fingers and provide a better grip. Anti-slip textures are designed on the outer side of the handle 222 to further improve the safety of operation.

[0042] As Figure 4 , the mesh structure 3 is welded to the inner wall of the protective cover 2. The mesh structure 3 can adopt a turtle-back mesh, which has a very high tensile strength, can withstand a large load, and has good corrosion resistance and can resist the erosion of a variety of chemical media. After the turtle-back mesh is welded, the anti-corrosion and high-temperature-resistant coating 4 is poured into the turtle-back mesh. The anti-corrosion and high-temperature-resistant coating can use anti-corrosion and high-temperature-resistant coating materials. This coating can firmly adhere to the inner walls of the turtle-back mesh and the protective cover to form a protective film, and the turtle-back mesh of the mesh structure 3 provides good air permeability, which is conducive to the uniform distribution and curing of the anti-corrosion and high-temperature-resistant coating 4.

[0043] It is worth noting that the cured coating forms a hard protective layer that can resist external impacts and abrasions. The combination of the anti-corrosion and high-temperature-resistant coating 4 and the turtle-back mesh 3 not only enhances the protective performance of the protective cover 2, but also provides additional mechanical strength and durability, ensuring the reliability of the protective cover in harsh environments.

[0044] The working process of this embodiment is as follows:

[0045] When adding an anti-corrosion structure to the flue water jacket 1, by measuring the size of the flue, the sizes of the end plates 21 and the side plates 22 are determined. Then, the mesh structure 3 is welded to the end plates 21 and the side plates 22, and then the anti-corrosion and high-temperature-resistant coating 4 is poured into the mesh structure 3. After waiting for the uniform distribution and curing of the anti-corrosion and high-temperature-resistant coating 4, the side plate 22 is fixed to the end plate 21 by the fixing member 231 provided at one end of the end plate 21 using the plug-in rod member 232. After the two end plates 21 and the two side plates 22 are fixed in sequence, the protective cover 2 is formed. Then, two handles 222 are respectively fixed on the upper parts of the two side plates 22 by bolts of M6 specification. By pulling the handles 222, the sliding grooves 221 on the side plates 22 are slidably installed in the sliders 11 located on the inner wall of the flue water jacket 1. When the sliders 11 and the sliding grooves 221 are installed, through the self-locking mechanism, the protective cover 2 is fixed on the inner wall of the flue water jacket 1.

[0046] Embodiment Two

[0047] As Figure 7As shown, the difference from the first embodiment lies in the locking component of the slider 11 and the chute 221. The locking component includes locking grooves 111, a fixed seat 224, and a clamping block 225. Among them, the two locking grooves 111 are respectively located on the left and right sides of the slider 11, with an inverted T shape, a length of 30 mm, a width of 20 mm, and a middle height of 8 mm. The locking grooves 111 are designed to match the clamping blocks 225 on the fixed seat 224 to ensure the accurate positioning of the protective cover 2.

[0048] Specifically, the fixed seat 224 is located at the upper part of the chute 221, with an inverted T-shaped structure, a length of 70 mm, a width of 30 mm, and a middle height of 8 mm. The fixed seat 224 is connected and fixed to the top of the chute 221 by bolts of M6 specification, and the bolt material is stainless steel to ensure the firmness and corrosion resistance of the connection.

[0049] Specifically, the clamping block 225 is in the shape of a cuboid, with a length of 40 mm, a width of 20 mm, and a height of 7 mm. A push-pull block is arranged on the upper part of the clamping block 225, which is an arc-shaped block. The movement of the clamping block 225 in the card slot can be realized through manual push-pull operation. When the clamping block 225 is clamped into the fixed slot 111, the protective cover 2 is fixed on the inner wall of the flue water jacket 1.

[0050] The working process of this embodiment is as follows:

[0051] When adding an anti-corrosion structure to the flue water jacket 1, by measuring the size of the flue, the sizes of the end plates 21 and the side plates 22 are determined. Then, the mesh structure 3 is welded to the end plates 21 and the side plates 22, and then the anti-corrosion and high-temperature-resistant coating 4 is poured into the mesh structure 3. After waiting for the uniform distribution and curing of the anti-corrosion and high-temperature-resistant coating 4, the side plate 22 is fixed to the end plate 21 by the fixing member 231 arranged at one end of the end plate 21 using the pin rod 232. After successively fixing the two end plates 21 and the two side plates 22, the protective cover 2 is formed. Then, two handles 222 are respectively fixed to the upper parts of the two side plates 22 by bolts of M6 specification. Lift the handles 222, slide the chute 221 on the side plate 22 into the slider 11 located on the inner wall of the flue water jacket 1. The movement of the clamping block 225 in the card slot can be realized through manual push-pull operation. After the clamping block 225 is clamped into the fixed slot 111, the protective cover 2 is fixed on the inner wall of the flue water jacket 1.

[0052] It should be clear that the above detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents the selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts fall within the scope of protection of the present invention.

Claims

1. An anti-corrosion device for a flue water jacket, comprising a protective cover (2) arranged on the inner wall of the flue water jacket (1), characterized in that, The protective cover (2) is a detachable structure with upper and lower hollow parts. A mesh structure (3) is provided on the inner wall of the protective cover (2), and an anti-corrosion and high-temperature-resistant coating (4) is provided on the mesh structure (3).

2. The anti-corrosion device for the flue water jacket according to claim 1, wherein, The protective cover (2) includes two end plates (21) and two side plates (22) arranged oppositely. A detachable connection is provided between an adjacent end plate (21) and side plate (22) through a locking component (23).

3. The anti-corrosion device for the flue water jacket according to claim 2, wherein The locking component (23) includes a fixing part (231) arranged inside the side plate (22) and extending outwards, and a plug rod part (232) arranged on the end plate (21) adjacent to the side plate and vertically inserted into the fixing part.

4. A flue water jacket anti-corrosion device according to claim 1, characterized in that, The protective cover (2) is slidably connected to the inner wall of the flue water jacket (1).

5. The anti-corrosion device for a flue water jacket according to claim 3, characterized in that, A chute (221) is provided on the outer side of the side plate (22), and a slider (11) is provided at the corresponding position on the inner wall of the flue water jacket (1). The slider (11) is slidably connected to the chute (221).

6. The anti-corrosion device for the flue water jacket according to claim 5, characterized in that, At least one handle (222) is provided at the top of the side plate (22).

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