High-temperature-corrosion-resistant nonferrous metal waste heat boiler

Abstract

The utility model discloses a nonferrous metal waste heat boiler with high temperature corrosion resistance, which relates to the technical field of waste heat boilers and comprises two main pipelines, a branch pipe connecting frame is arranged between the main pipelines, supporting frames are arranged at four corners of the branch pipe connecting frame, sleeves are sleeved on the outer walls of the supporting frames, and the sleeves are sleeved on the branch pipe connecting frame. According to the device, when the branch pipe connecting frames are subjected to preheating treatment, the positions of the branch pipe connecting frames can be kept stable in the process from preheating to welding, and the welding quality of the branch pipe connecting frames is improved; therefore, displacement or vibration of the branch pipe connecting frame caused by thermal expansion or other external factors can be prevented, accurate alignment of a welding connector is guaranteed, sufficient support and constraint are provided, deformation of a pipeline in the welding process is reduced, welding quality is guaranteed, and welding defects are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat boilers, in particular to a nonferrous metal waste heat boiler resistant to high temperature corrosion. Background Art

[0002] During the non-ferrous metal smelting process, various corrosive gases and liquids may be produced. These media have a strong corrosive effect on the outer wall of the water pipe of the waste heat boiler at high temperature. If exposed to this environment for a long time, the outer wall of the water pipe is prone to corrosion and damage.

[0003] There are generally two ways to repair corroded and damaged pipes:

[0004] First: Replace the damaged pipes. The replacement steps are complicated. Corrosion damage usually does not occur alone. The cost of replacing pipes is expensive. The whole pipe will only be replaced during major repairs.

[0005] Second: Use metal parts to weld the damaged parts of the corroded and damaged pipes to increase their thickness. This method is a common means of emergency repair.

[0006] When performing thickening welding, you need to:

[0007] Accurately assess the severity and extent of corrosion to ensure that the thickening weld can effectively solve the problem and will not have a negative impact on the overall structure;

[0008] Surface cleaning: Thoroughly remove dirt, grease, oxides and other impurities in and around the corrosion area to ensure welding quality;

[0009] Preheating: Depending on the type and thickness of the material, the welding area may need to be properly preheated to reduce stress and cracks generated during the welding process;

[0010] Welding material selection:

[0011] Compatibility: The selected welding material should have good compatibility with the parent material to ensure the strength and corrosion resistance of the welded joint;

[0012] Quality assurance: Select welding materials of qualified quality and avoid using inferior or expired materials;

[0013] Welding process control:

[0014] Welding parameters: According to the type and thickness of the material, reasonably set the welding current, voltage, welding speed and other parameters to obtain the best welding effect;

[0015] Welding sequence: Arrange the welding sequence reasonably to avoid stress concentration and deformation during welding;

[0016] Interlayer temperature control: During multi-layer welding, the interlayer temperature must be controlled to prevent overheating from causing structural changes and performance degradation.

[0017] In the process of implementing the solution, the inventors found that the following problems existed in the prior art and had not been well solved: when the pipeline was preheated, the pipeline was deformed due to the thermal stress caused by the temperature change, which not only affected the normal operation of the pipeline, but also posed a threat to the safety of the entire system. Utility Model Content

[0018] The main purpose of the utility model is to provide a non-ferrous metal waste heat boiler resistant to high temperature corrosion, which can effectively solve the problems in the background technology.

[0019] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0020] A high-temperature corrosion-resistant nonferrous metal waste heat boiler comprises a main pipeline, wherein the number of the main pipelines is two, a branch pipe connecting frame is arranged between the main pipelines, support frames are arranged at the four corners of the branch pipe connecting frame, sleeves are sleeved on the outer walls of the support frames, an adjusting screw 1 is threadedly connected to the sleeves, a branch pipe connecting frame is fixed between the two sleeves at both ends, an arc block is fixed at the ends of the branch pipe connecting frames close to each other, an adjusting screw 2 is threadedly connected at both ends of the arc block, and semicircular splints are fitted on the outer walls of the branch pipe connecting frame at the position of the adjusting screw 2.

[0021] Preferably, the top and the bottom of the support frame are rotatably connected with arc clamps, and the arc clamps are respectively attached to the outer wall of the main pipeline.

[0022] Preferably, ear plates are fixed to the top and bottom of the arc clamp, and through cavities are drilled on the ear plates. A long screw is inserted between the two through cavities with matching heights, and the long screw passes through the outer walls at both ends of the through cavities and is threadedly connected with nuts.

[0023] Preferably, one end of the adjusting screw passing through the sleeve is in contact with the outer wall of the support frame.

[0024] Preferably, the inner diameter of the sleeve matches the outer diameter of the support frame.

[0025] Preferably, one end of the second adjusting screw rod passing through the arc block is in contact with the outer wall of the adjacent semicircular clamping plate.

[0026] Compared with the prior art, the utility model has the following beneficial effects:

[0027] The present application can maintain a stable position of the branch pipe connecting frame during the preheating process to the welding process, which helps prevent displacement or vibration of the branch pipe connecting frame due to thermal expansion or other external factors, ensures accurate alignment of the welding interface, provides sufficient support and constraints, reduces deformation of the pipeline during the welding process, ensures welding quality, and reduces welding defects. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of a nonferrous metal waste heat boiler resistant to high temperature corrosion according to the utility model;

[0029] Figure 2 It is a structural schematic diagram of a high-temperature corrosion-resistant nonferrous metal waste heat boiler according to the utility model when the second adjusting screw rod abuts against a semicircular sheet;

[0030] Figure 3 It is a structural schematic diagram of a high-temperature corrosion-resistant nonferrous metal waste heat boiler according to the utility model when the regulating screw rod 2 leaves the semicircular sheet;

[0031] Figure 4 It is a schematic diagram of the enlarged structure of point A of a nonferrous metal waste heat boiler resistant to high temperature corrosion according to the utility model.

[0032] In the figure: 1. main pipeline; 11. branch pipe; 2. support frame; 21. arc clamp; 3. ear plate; 4. through cavity; 5. long screw; 6. nut; 7. sleeve; 8. adjusting screw 1; 9. arc block; 10. adjusting screw 2; 11. connecting frame; 12. semicircular clamp. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0034] like Figure 1-4 As shown, a high-temperature corrosion-resistant nonferrous metal waste heat boiler includes a main pipeline 1. The number of main pipelines 1 is two. A branch pipe connecting frame 11 is arranged between the main pipelines 1. Support frames 2 are arranged at the four corners of the branch pipe connecting frame 11. The outer wall of the support frame 2 is sleeved with a sleeve 7. The sleeve 7 is threadedly connected with an adjusting screw 8. The branch pipe connecting frame 11 is fixed between the two sleeves 7 at both ends. An arc block 9 is fixed at the end of the branch pipe connecting frame 11 that is close to each other. Adjusting screw 2 10 is threadedly connected at both ends of the arc block 9. Semicircular clamps 12 are fitted on the outer walls of the branch pipe connecting frame 11 at the position of adjusting screw 2 10.

[0035] Specifically, the top and bottom of the support frame 2 are rotatably connected with an arc clamp 21, and the arc clamp 21 is respectively attached to the outer wall of the main pipeline 1. The top and bottom of the arc clamp 21 are fixed with ear plates 3, and the ear plates 3 are each opened with a through cavity 4. A long screw 5 is inserted through the two through cavities 4 with matching heights. The long screw 5 passes through the outer walls of both ends of the through cavity 4 and is threadedly connected with a nut 6, so that the basic fixing part can be stably fixed on the main pipeline 1, providing basic stability when the adjusting screw 10 is against the branch connecting frame 11 and the semicircular clamp 12.

[0036] Specifically, one end of the adjusting screw 8 passes through the sleeve 7 and contacts the outer wall of the support frame 2 to ensure the positioning stability of the sleeve 7 on the support frame 2.

[0037] Specifically, the inner diameter of the sleeve 7 matches the outer diameter of the support frame 2 , and the difference in surface dimensions causes the position limiting to be unstable.

[0038] Specifically, one end of the adjusting screw rod 10 passing through the arc block 9 is in contact with the outer wall of the adjacent semicircular clamping plate 12 respectively.

[0039] Working principle: The waste heat boiler contains multiple main pipelines 1 and branch pipe connecting frames 11. This application only describes the treatment method for the damaged part of a single branch pipe connecting frame 11. First, the support frame 2 is placed at the four corners of the branch pipe connecting frame 11 respectively. The arc-shaped clamp 21 on the top of the support frame 2 is sleeved and fits on the outer wall of the main pipeline 1 through movement. Then, the long screw 5 penetrates the through cavity 4 and is threadedly connected with the nut 6, so that the support frame 2 can be firmly connected to the main pipeline 1, providing basic stability for the later positioning work. According to the fixed position required, the sleeve 7 is placed on the support frame 2. The outer wall of the support frame 2 slides to a matching position, and the support frame 2 is pressed against by rotating the adjusting screw 8, so that the sleeve 7 can be stably at the current height, and the semicircular splint 12 is fitted on the outer wall of the branch connecting frame 11. Whether the semicircular splint 12 fits the branch connecting frame 11 needs to be used according to the on-site conditions. During preheating to welding, the adjusting screw 10 is pressed against the semicircular splint 12, and the semicircular splint 12 fits the branch connecting frame 11 to prevent the branch connecting frame 11 from deformation. When welding, the adjusting screw 10 needs to press against the thickening part of the welding to make the welding more stable and avoid welding defects.

[0040] The circuits, electronic components and control modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the utility model does not involve improvements to software and methods.

[0041] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A high temperature corrosion resistant nonferrous metal waste heat boiler, comprising a main pipeline (1), characterized in that: The number of the main pipelines (1) is two, and a branch pipe connecting frame (11) is arranged between the main pipelines (1). Support frames (2) are arranged at the four corners of the branch pipe connecting frame (11). The outer wall of the support frame (2) is sleeved with a sleeve (7), and the sleeve (7) is threadedly connected with an adjusting screw rod (8). A branch pipe connecting frame (11) is fixed between the two sleeves (7) at both ends. An arc block (9) is fixed at one end of the branch pipe connecting frame (11) close to each other, and the two ends of the arc block (9) are threadedly connected with an adjusting screw rod (10). The outer walls of both sides of the branch pipe connecting frame (11) located at the position of the adjusting screw rod (10) are fitted with semicircular clamping plates (12).

2. The high temperature corrosion resistant nonferrous metal waste heat boiler according to claim 1, characterized in that: The top and bottom of the support frame (2) are both rotatably connected with arc-shaped clamps (21), and the arc-shaped clamps (21) are respectively attached to the outer wall of the main pipeline (1).

3. The high temperature corrosion resistant nonferrous metal waste heat boiler according to claim 2, characterized in that: The top and bottom of the arc-shaped clamp (21) are both fixed with ear plates (3), and the ear plates (3) are both provided with through cavities (4). A long screw (5) is inserted through two through cavities (4) of matching heights, and the long screw (5) passes through the outer walls of both ends of the through cavities (4) and is threadedly connected with nuts (6).

4. The high temperature corrosion resistant nonferrous metal waste heat boiler according to claim 1, characterized in that: One end of the adjusting screw rod (8) passing through the sleeve (7) is in contact with the outer wall of the support frame (2).

5. The high temperature corrosion resistant nonferrous metal waste heat boiler according to claim 1, characterized in that: The inner diameter dimensions of the sleeve (7) respectively match the outer diameter dimensions of the support frame (2).

6. The high temperature corrosion resistant nonferrous metal waste heat boiler according to claim 1, characterized in that: One end of the second adjusting screw rod (10) passing through the arc block (9) is in contact with the outer wall of the adjacent semicircular clamping plate (12).

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