Sprayed steel lining polytetrafluoroethylene pipeline
By designing the limit groove and bump structure in the flange of the steel-lined tetrafluoro pipe, the leakage and fixing inconvenience during pipeline connection are solved, the stable connection and sealing effect of the pipeline is achieved, and the installation process is simplified.
Patent Information
- Application Number
- CN202422235927.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-12
AI Technical Summary
The existing steel-lined tetrafluoro pipes have leakage and inconvenience in fixing when connecting, especially because the PTFE pipe is hard and has insufficient sealing properties, and sealant is required.
A flange with a limit groove and bump structure is designed. The first, second and third bumps at the bottom of the limit groove form a plastic sealing bump after heating and flip, which increases the length of the pipeline gap. Combined with the design of the insertion rod and the fixing hole, the stable connection and sealing of the pipeline is achieved.
Improves the sealing and connection stability of the pipe, reduces the risk of leakage, simplifies the installation process, and improves work efficiency.
Smart Images
Figure CN223120882U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of steel-lined PTFE pipes, and specifically relates to a sprayed steel-lined PTFE pipe. Background Technique
[0002] The steel-lined PTFE pipe is an industrial pipe, which is made of ordinary carbon steel pipe as the matrix and lined with thermoplastic polytetrafluoroethylene plastic with excellent chemical stability. This kind of pipe combines the mechanical strength of steel and the excellent corrosion resistance of PTFE, and is suitable for transporting corrosive media such as high temperature, high pressure, strong acid, and strong alkali.
[0003] For the installation and use of the steel-lined PTFE pipe, first, the steel pipe parts that need to be welded should be pre-assembled, then the rust on the inner wall of the steel pipe should be removed, the inner cavity of the pipe should be purged with compressed air, and the PTFE pipe should be inserted into the steel pipe. Through heat treatment, the PTFE lining is adapted to be used at a certain temperature, and the tight combination between the lining and the steel pipe should be ensured. Moreover, the two ends of the PTFE pipe need to be flanged, and different steel-lined PTFE pipes are fixed by tightening the flange nuts.
[0004] For the existing steel-lined PTFE pipes, after flanging treatment on both sides, due to the relatively hard material of the PTFE pipe, after the two groups of steel-lined PTFE pipes are fixed with bolts, the sealing performance is insufficient, and it is necessary for personnel to apply sealant at the interface, which is rather troublesome. Content of the Utility Model
[0005] Based on this, the purpose of the utility model is to provide a sprayed steel-lined PTFE pipe to solve the technical problems of leakage and inconvenient fixation during the connection of the pipe body.
[0006] To achieve the above purpose, the utility model provides the following technical solution: A sprayed steel-lined PTFE pipe, including a pipe body, one end of the pipe body is fixed with a first flange, and the other end of the pipe body is fixed with a second flange. Limiting grooves are opened inside both the first flange and the second flange. A first convex block is fixed inside the limiting groove on one side of the first flange. A second convex block and a third convex block are fixed inside the limiting groove on one side of the second flange, and the diameter of the third convex block is smaller than that of the first convex block, and the diameter of the second convex block is larger than that of the first convex block. A plastic-sealed pipe is arranged inside the pipe body.
[0007] By adopting the above technical solution, the problems of leakage and inconvenient fixation during the connection of the pipe body are solved. Through the provided limiting groove, the plastic-sealed pipe will fit with it after flanging treatment. Since the bottom of the limiting groove is provided with the first bump, the second bump and the third bump, after the heating flanging treatment, the first plastic-sealed bump, the second plastic-sealed bump and the third plastic-sealed bump will be formed on one side of the plastic-sealed pipe. When two groups of pipes are connected, by squeezing the plastic-sealed pipe between the two pipes, there will be a sealing effect, which is beneficial to the waterproofing of the pipes. The first plastic-sealed bump, the second plastic-sealed bump and the third plastic-sealed bump are misaligned and fitted, increasing the length of the gap between the pipes and further enhancing the waterproofing ability between the pipes.
[0008] The present utility model is further configured such that a plug rod is fixed on one side of the first flange, and the end of the plug rod is tapered. A jack is opened inside the second flange, and the inner wall of the second flange is fitted with the outer wall of the plug rod.
[0009] By adopting the above technical solution, the tapered plug rod is convenient to be sleeved with the fixing hole during the connection of multiple pipes. The opening of the jack is beneficial to the fixation between multiple pipes and maintains the stability between the pipes.
[0010] The present utility model is further configured such that multiple groups of fixing blocks are fixed on the outer wall of the pipe body, and bolts are installed inside the fixing blocks.
[0011] By adopting the above technical solution, different pipe bodies are fixed by fixing the fixing blocks between different pipe bodies, thereby completing the assembly of the pipe bodies.
[0012] The present utility model is further configured such that two groups of mounting blocks are fixed on the outer wall of the pipe body. A spherical bump is fixed on the outer wall of one group of mounting blocks, and a card slot is opened inside the other group of mounting blocks.
[0013] By adopting the above technical solution, it can be judged whether different pipe bodies are aligned by whether the spherical bump and the card slot are completely coupled, which plays an important role in adjusting the installation between different pipe bodies.
[0014] The present utility model is further configured such that multiple groups of rubber strips are fixed inside the pipe body.
[0015] By adopting the above technical solution, the friction between the plastic-sealed pipe and the pipe body is strengthened, preventing the plastic-sealed pipe from slipping and rotating, thereby affecting the sealing performance of the pipe.
[0016] The present utility model is further configured such that the wall surface of the plastic-sealed pipe is closely attached to the inner wall of the pipe body.
[0017] By adopting the above technical solution, while increasing the friction between the plastic-sealed pipe and the pipe body, the flow rate of the plastic-sealed pipe is increased, and the working efficiency of the device is increased.
[0018] In summary, the present utility model mainly has the following beneficial effects:
[0019] 1. By providing a limiting groove, a fixing hole, a plug rod, a first convex block, a second convex block, a third convex block, a first plastic-sealed convex block and a second plastic-sealed convex block, the present utility model solves the problems of leakage and inconvenient fixing during the connection of pipe bodies. After the plastic-sealed pipe undergoes a flanging treatment, it will fit with the limiting groove. Since the bottom of the limiting groove is provided with the first convex block, the second convex block and the third convex block, after the heating flanging treatment, the first plastic-sealed convex block, the second plastic-sealed convex block and the third plastic-sealed convex block will be formed on one side of the plastic-sealed pipe. When two groups of pipes are connected, by squeezing the plastic-sealed pipe between the two pipes, a sealing effect will be achieved, which is beneficial to the waterproofing of the pipes. The first plastic-sealed convex block, the second plastic-sealed convex block and the third plastic-sealed convex block are misaligned and fitted, increasing the length of the gap between the pipes and further enhancing the waterproofing ability between the pipes.
[0020] 2. By providing a plug rod and a fixing hole, during the connection of pipes, the plug rod and the fixing hole are matched with each other, thus facilitating the connection of two groups of PTFE steel-lined pipes. By providing two groups of pipe bodies, it is convenient to install the plastic-sealed pipe. The two groups of pipes are fixed by bolts. By providing the protrusions, it is more convenient for the two groups of pipe bodies to be spliced. Just by matching the spherical convex block with the card slot, the splicing of the two groups of pipe bodies can be completed, and there is no need for personnel to adjust the position of the pipe body. When multiple pipes are connected, by aligning the fixing holes and the plug rods on each flange, the alignment of the pipes can be completed, avoiding secondary adjustment and facilitating the fixing of the pipes. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 is the first structural schematic diagram of the present utility model;
[0022] Figure 2 is the second structural schematic diagram of the present utility model;
[0023] Figure 3 is the third structural schematic diagram of the present utility model;
[0024] Figure 4 is the fourth structural schematic diagram of the present utility model;
[0025] Figure 5 is the detailed internal structure diagram of the present utility model.
[0026] In the figure: 1, pipe body; 2, first flange; 21, second flange; 22, jack; 3, limiting groove; 4, fixing hole; 5, plug rod; 6, first convex block; 61, second convex block; 62, third convex block; 7, plastic-sealed pipe; 8, first plastic-sealed convex block; 81, second plastic-sealed convex block; 82, third plastic-sealed convex block; 9, fixing block; 10, mounting block; 101, spherical convex block; 102, card slot. Detailed implementation manners
[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model, and should not be construed as a limitation to the present utility model.
[0028] The following will describe the embodiments of the present utility model according to the overall structure of the present utility model.
[0029] A spray-coated steel-lined PTFE pipe, as Figure 1 - Figure 5 shown, includes a pipe body 1. A first flange 2 is fixed at one end of the pipe body 1, and a second flange 21 is fixed at the other end of the pipe body 1. By providing the first flange 2 and the second flange 21, it is convenient for the connection between multiple pipes. Limiting grooves 3 are provided inside both the first flange 2 and the second flange 21, which is convenient for placing the plastic-sealed pipe 7 after flipping. A first protrusion 6 is fixed inside the limiting groove 3 on one side of the first flange 2. A second protrusion 61 and a third protrusion 62 are fixed inside the limiting groove 3 on one side of the second flange 21. The diameter of the third protrusion 62 is smaller than that of the first protrusion 6, and the diameter of the second protrusion 61 is larger than that of the first protrusion 6, so that the plastic-sealed protrusions after flipping the plastic-sealed pipe 7 are misaligned, increasing the gap length between the pipes and enhancing the waterproof ability between the pipes. A plastic-sealed pipe 7 is arranged inside the pipe body 1.
[0030] Please refer to Figure 1 and Figure 4 , a plug rod 5 is fixed on one side of the first flange 2, and the end of the plug rod 5 is tapered. A jack 22 is provided inside the second flange 21, and the inner wall of the second flange 21 is in contact with the outer wall of the plug rod 5. When multiple pipes are connected, the tapered plug rod 5 is convenient for sleeving with the fixing hole 4. The provision of the jack 22 is beneficial to the fixation between multiple pipes and maintains the stability between the pipes.
[0031] Please refer to Figure 1 and Figure 4 , multiple fixing blocks 9 are fixed on the outer wall of the pipe body 1, and bolts are installed inside the fixing blocks 9. By fixing the fixing blocks 9 between different pipe bodies 1, different pipe bodies 1 are fixed, and the assembly of the pipe body 1 is completed.
[0032] Please refer to Figure 5 , two groups of mounting blocks 10 are fixed on the outer wall of the pipe body 1. A spherical protrusion 101 is fixed on the outer wall of one group of mounting blocks 10, and a card slot 102 is provided inside the other group of mounting blocks 10. Whether the spherical protrusion 101 and the card slot 102 are completely coupled can be used to determine whether different pipe bodies 1 are aligned, which plays an important role in adjusting the installation between different pipe bodies 1.
[0033] Please refer to Figure 5 , there are multiple rubber strips fixed inside the pipe body 1, which strengthens the friction between the plastic-sealed pipe 7 and the pipe body 1, prevents the plastic-sealed pipe 7 from slipping and rotating, and thus affects the sealing performance of the pipeline.
[0034] Please refer to Figure 1 and Figure 4 , the wall surface of the plastic-sealed pipe 7 is closely attached to the inner wall of the pipe body 1. While increasing the friction between the plastic-sealed pipe 7 and the pipe body 1, it expands the flow rate of the plastic-sealed pipe 7 and improves the working efficiency of the device.
[0035] The working principle of the present utility model is as follows: Two sets of pipe bodies 1 are spliced. The spherical convex block 101 and the card slot 102 on one side of the pipe body 1 are coupled with each other to ensure that the two pipe bodies 1 are aligned with each other. The fixing blocks 9 on one side of the pipe body 1 are fixed to each other using bolts, thereby completing the assembly of the two pipe bodies 1. After cleaning the inner wall of the pipe body 1, the plastic-sealed pipe 7 is inserted into the inside of the pipe body 1, and through heat treatment, it is tightly combined with the rubber strips preset on the inner wall of the pipe body 1. After heat treatment, the two ends of the plastic-sealed pipe 7 are flanged so that they fit with the limit grooves 3. At one end where the plastic-sealed pipe 7 is in contact with the first convex block 6, a first plastic-sealed convex block 8 is formed inside the plastic-sealed pipe 7. Similarly, at the other end of the plastic-sealed pipe 7 away from the first convex block 6, a second plastic-sealed convex block 81 and a third plastic-sealed convex block 82 are formed inside the plastic-sealed pipe 7. The second flange 21 is provided with a plug rod 5 and a jack 22, and the first flange 2 is provided with a jack 22 and a fixing hole 4. When multiple pipelines are connected, the fixing holes 4 and the plug rods 5 on different flanges are pre-aligned, and then through mutual extrusion, different plastic-sealed pipes 7 are closely attached to prevent leakage when the pipelines are connected. Finally, bolts are passed through the jacks 22 on different flanges to fix the pipelines and prevent the pipeline connections from loosening and causing leakage damage.
[0036] Although the embodiments of the present utility model have been shown and described, the specific embodiments are only explanations of the present utility model and are not limitations thereof. The specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can, without departing from the principles and purposes of the present utility model, make modifications, substitutions, and variations that do not contribute creatively to the embodiments as needed, but as long as they are within the scope of the claims of the present utility model, they are protected by the patent law.
Claims
1. A spray-coated steel-lined PTFE pipe, comprising a pipe body (1), characterized in that: One end of the pipe body (1) is fixed with a first flange (2), and the other end of the pipe body (1) is fixed with a second flange (21). Limiting grooves (3) are provided inside both the first flange (2) and the second flange (21). A first convex block (6) is fixed inside the limiting groove (3) on one side of the first flange (2). A second convex block (61) and a third convex block (62) are fixed inside the limiting groove (3) on one side of the second flange (21). The diameter of the third convex block (62) is smaller than that of the first convex block (6), and the diameter of the second convex block (61) is larger than that of the first convex block (6). A plastic-sealed pipe (7) is arranged inside the pipe body (1).
2. A spray-coated steel-lined PTFE pipe according to claim 1, characterized in that: One side of the first flange (2) is fixed with an insertion rod (5), and the end of the insertion rod (5) is tapered. A jack (22) is provided inside the second flange (21), and the inner wall of the second flange (21) is in contact with the outer wall of the insertion rod (5).
3. A spray-coated steel-lined PTFE pipe according to claim 1, characterized in that: A plurality of fixing blocks (9) are fixed on the outer wall of the pipe body (1), and bolts are installed inside the fixing blocks (9).
4. A spray-coated steel-lined PTFE pipe according to claim 1, characterized in that: Two groups of mounting blocks (10) are fixed on the outer wall of the pipe body (1). A spherical convex block (101) is fixed on the outer wall of one group of mounting blocks (10), and a clamping groove (102) is provided inside the other group of mounting blocks (10).
5. A spray-coated steel-lined PTFE pipe according to claim 1, characterized in that: A plurality of rubber strips are fixed inside the pipe body (1).
6. A spray-coated steel-lined PTFE pipe according to claim 1, wherein: The wall surface of the plastic-sealed pipe (7) is in close contact with the inner wall of the pipe body (1).