Anti-corrosion lining Teflon pipeline
By lining the pipe with a PTFE inner lining and a support layer, combined with sealing rings and fixing mechanisms, the problem of insufficient corrosion resistance of the pipe is solved, achieving long service life and stable connection, and reducing maintenance frequency and cost.
Patent Information
- Application Number
- CN202520154874.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-01-22
AI Technical Summary
When transporting corrosive media, existing pipelines are prone to surface oxidation, pitting, and perforation. Existing solutions are costly or have short-lasting effects, and require frequent maintenance, posing economic and safety risks.
The main pipeline is made of high-strength alloy steel with a PTFE inner lining, and is equipped with a support layer and sealing ring. Combined with precision flange joints and fixing mechanisms, it achieves tight connection and stability, and enhances corrosion resistance.
Without significantly increasing costs, it significantly extends service life, reduces maintenance frequency, ensures good chemical resistance and physical stability, and lowers operating costs.
Smart Images
Figure CN223635741U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to pipeline technical field, concretely is a kind of anticorrosive lining Teflon pipeline. BACKGROUND
[0002] At present, in chemical industry, pharmaceutical and other industries, conveying corrosive medium usually adopts the pipeline made of stainless steel or other corrosion-resistant metal, this kind of material has good strength and toughness, but in the case of long-term contact with strong acid, alkali and other corrosive chemicals, surface oxidation, pitting and even perforation problems are inevitable, which seriously affect production efficiency and safety performance.
[0003] At present, two methods are generally adopted in the industry to improve the corrosion resistance of pipeline system, one is to increase the thickness of pipe wall to enhance the corrosion resistance, this method is simple and easy to operate but cost is higher and weight is increased, the second is to carry out electroplating treatment or coating anticorrosive coating on the inner and outer surface of pipeline, the former can effectively improve the corrosion resistance of metal itself, but due to the thin coating, it is easy to fall off and fail in some extreme environments, the latter can temporarily solve the problem, but due to the limited adhesion of coating, it will gradually lose the protection effect after a period of time. UTILITY MODEL CONTENT
[0004] In view of the deficiencies of the prior art, the utility model provides an anticorrosive lining Teflon pipeline, which has the advantages of significantly prolonging the service life, reducing the maintenance frequency, and ensuring good chemical resistance and physical stability without significantly increasing the cost, solves the problem that the pipeline internal corrosion cannot be fundamentally solved, the maintenance cycle is short, the replacement frequency is high, and the enterprise has a large economic burden and safety hazard.
[0005] To achieve the above purpose, the utility model provides the following technical scheme: an anticorrosive lining Teflon pipeline, comprising a main pipeline, the inside of the main pipeline is fixed with a support layer through adhesive, the inside of the support layer is fixed with an inner lining layer through adhesive, the inside of the left and right sides of the main pipeline is placed with a sealing ring, the inside of the left and right sides of the main pipeline is threadedly communicated with a flange joint, the left and right sides of the outside of the main pipeline are provided with a fixing mechanism, the opposite side of the flange joint on the left and right sides is matched with the side away from the sealing ring on the left and right sides;
[0006] The fixing mechanism comprises two fixing rings, a plurality of insertion grooves, two threaded cylinders, two threaded rods, two rotating rings and two insertion rods, both of the fixing rings are arranged on the left and right sides outside the main pipeline, the plurality of insertion grooves are arranged on the side opposite to the left and right fixing rings and are circularly distributed, both of the threaded cylinders are arranged on the upper side of the side opposite to the left and right flange joints, both of the threaded rods are threadedly connected in the left and right threaded cylinders, both of the rotating rings are arranged outside the left and right threaded rods, both of the insertion rods are arranged on the side opposite to the left and right threaded rods, and the left and right insertion rods are slidably inserted in the left and right insertion grooves.
[0007] By adopting the technical scheme, the service life is greatly prolonged, the maintenance frequency is reduced, and good chemical resistance and physical stability are ensured without significantly increasing the cost.
[0008] Further, the sealing ring is an EPDM rubber ring.
[0009] By adopting the technical scheme, the sealing ring has the advantages of wide temperature resistance range and aging resistance, and the stability of the connection between the left and right flange joints and the main pipeline is improved.
[0010] Further, the outer diameter of the inner lining layer is matched with the inner diameter of the support layer.
[0011] By adopting the technical scheme, the outer side of the inner lining layer can be closely attached to the inner side of the support layer, and the stability of the structure is improved.
[0012] Further, the inner diameter of the main pipeline is matched with the outer diameter of the support layer.
[0013] By adopting the technical scheme, the outer side of the support layer can be closely attached to the inner side of the main pipeline.
[0014] Further, the outer side of the rotating ring is provided with an anti-skid layer, and the anti-skid layer is a rubber layer.
[0015] By adopting the technical scheme, the anti-skid layer can improve the stability of the rotating ring during rotation.
[0016] Further, the gap between the insertion rod and the insertion groove is matched, and the insertion rod moves linearly in the insertion groove.
[0017] By adopting the technical scheme, the stability of the insertion is improved.
[0018] Further, the plurality of insertion grooves are evenly distributed on the side opposite to the left and right fixing rings.
[0019] By adopting the technical scheme, when the left and right flange joints are rotated and the pre-tightening force is adjusted in the interiors of the main pipeline left and right, the left and right side plug-in rods are facilitated to be plugged in the interiors of the left and right side corresponding plug-in grooves.
[0020] Further, the left and right side fixing rings are symmetrically distributed on the left and right sides of the longitudinal central axis of the main pipeline.
[0021] By adopting the technical scheme, the gap between the fixing ring and the main pipeline is matched, and the fixing ring can be a stainless steel ring.
[0022] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:
[0023] The anticorrosion inner lining Teflon pipeline is made of high-strength alloy steel, ensuring the firmness and durability of the overall structure. The inner lining layer uses PTFE (polytetrafluoroethylene) material as the core protective layer, which has excellent chemical stability and low friction coefficient characteristics, making it particularly suitable for transporting various corrosive liquid or gas media. In addition, a support layer is provided between the main pipeline and the inner lining layer to maintain close contact between the two, preventing gaps caused by deformation due to temperature changes. The main pipeline is connected at both ends with flange joints that are precisely machined, and is supplemented by high-performance sealing rings to achieve reliable axial sealing effect. When the medium flows through the pipeline, it first contacts the inner lining layer, which has a smooth surface and strong chemical inertness, so it is not easy to react or adsorb deposits even in the presence of strong acid or strong base, thus playing the role of the first line of defense. At the same time, the support layer in the middle provides sufficient rigidity support and enough freedom to allow local small displacement adjustment, which can resist external pressure fluctuations and adapt to thermal expansion and contraction effects. After fixing the flange joints on the left and right sides of the main pipeline, the rotating rings on the left and right sides can be rotated to slide the plug-in rods into the corresponding plug-in grooves on the left and right sides, achieving the positioning and fixing of the flange joints on the left and right sides, improving the stability of the connection between the flange joints on the left and right sides and the main pipeline, thereby significantly extending the service life, reducing the number of maintenance times, and ensuring good chemical resistance and physical stability without significantly increasing the cost. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 The figure is a structural schematic diagram of the present utility model;
[0025] Figure 2 The figure is a connection structural schematic diagram of the main pipeline, the support layer and the sealing ring of the present utility model;
[0026] Figure 3 The figure is a fixing mechanism schematic diagram of the present utility model.
[0027] Figure 4 The figure is Figure 3A close-up view of the middle A.
[0028] In the figure: 1, main pipe; 2, support layer; 3, inner lining layer; 4, sealing ring; 5, flange joint; 6, fixing mechanism; 61, fixing ring; 62, insertion slot; 63, threaded cylinder; 64, threaded rod; 65, rotating ring; 66, insertion rod. DETAILED DESCRIPTION
[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0030] Please refer to Figures 1 to 2 The anti-corrosion Teflon-lined pipe in the embodiment comprises a main pipe 1, a support layer 2 is fixed in the main pipe 1 by an adhesive, an inner lining layer 3 is fixed in the support layer 2 by an adhesive, a sealing ring 4 is placed in the left and right sides of the main pipe 1, a flange joint 5 is threadedly connected to the left and right sides of the main pipe 1, a fixing mechanism 6 is arranged on the left and right sides of the outer side of the main pipe 1, the fixing mechanism 6 improves the stability of the connection between the left and right flange joints 5 and the main pipe 1, and the left and right flange joints 5 are attached to the sides opposite to the left and right sealing rings 4.
[0031] In the embodiment, the sealing ring 4 is an EPDM rubber ring, the outer diameter of the inner lining layer 3 is matched with the inner diameter of the support layer 2, and the inner diameter of the main pipe 1 is matched with the outer diameter of the support layer 2.
[0032] In the embodiment, the main pipe 1 is made of high-strength alloy steel to ensure the firmness and durability of the overall structure, and the inner lining layer 3 uses PTFE polytetrafluoroethylene material as the core protective layer, which is particularly suitable for conveying various corrosive liquid or gas media due to its excellent chemical stability and low friction coefficient characteristics. In addition, the support layer 2 is arranged between the main pipe 1 and the inner lining layer 3 to keep them closely attached to each other, avoiding the gap phenomenon caused by deformation due to temperature changes.
[0033] Need to explain, the main pipeline 1 both ends threaded flange joint 5 with precision machining, and supplemented by high performance sealing ring 4 to achieve reliable axial sealing effect, when the medium flows through the pipeline, first contact is the inner lining 3, because its surface smooth and strong chemical inertness, so even in the face of strong acid, strong alkali is not easy to react or adsorption of sediments, thus playing the role of the first line of defense, at the same time, the support layer 2 in the middle part provides sufficient stiffness support and leave enough freedom to allow local small displacement adjustment, so that it can resist external pressure fluctuations and adapt to thermal expansion and contraction effect.
[0034] Please refer to Figure 3 , in order to enhance the stability of left and right flange joint 5 and main pipeline 1 connection, the fixed mechanism 6 in the embodiment, including two fixed ring 61, the number of not less than two plug groove 62, two threaded cylinder 63, two threaded rod 64, two rotating ring 65 and two plug rod 66, two fixed ring 61 are arranged on the left and right sides of the outer side of the main pipeline 1, the number of not less than two plug groove 62 are opened in the left and right side of the fixed ring 61 opposite side, and circular distribution.
[0035] In the embodiment, the intelligent monitoring module can be introduced on the basis of the original, through the real-time acquisition analysis of flow, pressure, temperature and other parameters, to predict the possibility of potential failure, and timely warning to relevant personnel to intervene in advance.
[0036] In the embodiment, the two threaded cylinder 63 are arranged on the upper side of the opposite side of the left and right flange joint 5, the two threaded rod 64 are screwed in the inside of the left and right threaded cylinder 63, the two rotating ring 65 are arranged on the outside of the left and right threaded rod 64, the two plug rod 66 are arranged on the opposite side of the left and right threaded rod 64, the left and right plug rod 66 are slidingly inserted in the inside of the left and right plug groove 62.
[0037] In the embodiment, the left and right flange joint 5 is fixed in the left and right side of the main pipeline 1, the left and right rotating ring 65 can be rotated, the left and right threaded rod 64 are rotated and moved in opposite directions in the inside of the left and right threaded cylinder 63, driving the left and right plug rod 66 to slidingly insert in the inside of the left and right corresponding plug groove 62, realizing the left and right flange joint 5 limiting fixed, enhancing the stability of left and right flange joint 5 and main pipeline 1 connection, at the same time, the left and right flange joint 5 has pre tightening force adjusting function.
[0038] The outer side of the rotating ring 65 is provided with an anti-skid layer, which is a rubber layer. The insertion rod 66 cooperates with the gap of the insertion slot 62, and moves linearly in the left and right sides of the insertion slot 62. The number of insertion slots 62 is not less than two, which are evenly distributed on the side opposite to the left and right side fixing rings 61. The left and right side fixing rings 61 are symmetrically distributed on the left and right sides of the longitudinal central axis of the main pipeline 1.
[0039] After the left and right side flange joints 5 are rotated and the pre-tightening force is adjusted, the left and right side insertion rods can be inserted into the corresponding insertion slots on the left and right sides.
[0040] It should be noted that the corrosion resistance of the pipeline is greatly improved, the probability of equipment damage caused by corrosion is reduced, the service life is prolonged, the workload and cost of later maintenance are reduced, a large amount of operating cost is saved for enterprises, the overall layout and connection mode of the pipeline system are optimized, and the installation convenience and reliability are enhanced.
[0041] The working principle of the above embodiment is as follows:
[0042] The main pipeline 1 is made of high-strength alloy steel to ensure the firmness and durability of the overall structure. The inner lining layer 3 uses PTFE (polytetrafluoroethylene) material as the core protective layer, which has excellent chemical stability and low friction coefficient characteristics, and is particularly suitable for conveying various corrosive liquid or gas media. In addition, a support layer 2 is arranged between the main pipeline 1 and the inner lining layer 3 to keep them tightly attached and avoid the gap caused by deformation due to temperature changes. The main pipeline 1 is connected at both ends with flange joints 5 that are precisely machined, and is supplemented by high-performance sealing rings 4 to achieve reliable axial sealing effect. When the medium flows through the pipeline, it first contacts the inner lining layer 3, which is smooth and chemically inert, so it is not easy to react or adsorb sediments even in the presence of strong acid or strong base, thereby playing the role of the first line of defense. At the same time, the support layer 2 in the middle part provides sufficient rigidity support and enough freedom to allow local small displacement adjustment, which can resist external pressure fluctuations and adapt to thermal expansion and contraction effects. After the left and right flange joints 5 are fixed inside the main pipeline 1, the rotating ring 65 can be rotated, the threaded rod 64 is rotated and moved in the opposite direction inside the left and right threaded cylinders 63, and the insertion rod 66 is slidably inserted into the corresponding insertion slot 62 on the left and right sides to limit the left and right flange joints 5, thereby improving the stability of the connection between the left and right flange joints 5 and the main pipeline 1. At the same time, the left and right flange joints 5 both have pre-tightening force adjustment function.
Claims
1. A corrosion-proof lined Teflon pipe comprising a main pipe (1), characterized in that: The inside of the main pipeline (1) is fixed with a support layer (2) by adhesive, the inside of the support layer (2) is fixed with an inner lining layer (3) by adhesive, wherein the main pipeline (1) is made of high-strength alloy steel, the inner lining layer (3) adopts PTFE polytetrafluoroethylene material, the inside of the left and right sides of the main pipeline (1) is provided with a sealing ring (4), the inside of the left and right sides of the main pipeline (1) is threadedly connected with a flange joint (5), the left and right sides of the outer side of the main pipeline (1) are provided with a fixing mechanism (6), and the opposite sides of the left and right flange joints (5) are attached to the sides away from the left and right sealing rings (4). The fixing mechanism (6) comprises two fixing rings (61), a plurality of plug-in grooves (62), two threaded barrels (63), two threaded rods (64), two rotating rings (65) and two plug-in rods (66), the two fixing rings (61) are arranged on the left and right sides of the outer side of the main pipeline (1), the plurality of plug-in grooves (62) are arranged on the sides away from the left and right fixing rings (61) and are circularly distributed, the two threaded barrels (63) are arranged on the upper sides of the opposite sides of the left and right flange joints (5), the two threaded rods (64) are threadedly connected in the left and right threaded barrels (63), the two rotating rings (65) are arranged on the outer sides of the left and right threaded rods (64), and the two plug-in rods (66) are arranged on the opposite sides of the left and right threaded rods (64) and are slidably inserted into the left and right plug-in grooves (62).
2. A corrosion-proof lined Teflon pipe according to claim 1, characterized in that: The sealing ring (4) is an EPDM rubber ring.
3. An erosion control lined Teflon pipe according to claim 1, wherein: The outer diameter of the inner lining layer (3) is matched with the inner diameter of the support layer (2).
4. An erosion control lined Teflon pipe according to claim 1, wherein: The inner diameter of the main pipeline (1) is matched with the outer diameter of the support layer (2).
5. An erosion control lined Teflon pipe according to claim 1, wherein: The outer side of the rotating ring (65) is provided with an anti-skid layer, and the anti-skid layer is a rubber layer.
6. An erosion control lined Teflon pipe according to claim 1, wherein: The gap between the plug-in rod (66) and the plug-in groove (62) is matched, and the plug-in rod (66) moves linearly in the plug-in groove (62).
7. An erosion control lined Teflon pipe according to claim 1, wherein: The plurality of plug-in grooves (62) are evenly distributed on the sides away from the left and right fixing rings (61).
8. An erosion control lined Teflon pipe according to claim 1, wherein: The left and right fixing rings (61) are symmetrically distributed on the left and right sides of the longitudinal central axis of the main pipeline (1). The left and right fixing rings (61) are symmetrically distributed on the left and right sides of the longitudinal central axis of the main pipeline (1).