Industrial pipeline metal pipe fitting
By employing a multi-layered composite structure and rapid connection technology, the complexity, compatibility, and pressure and fatigue resistance issues of metal pipe fittings in industrial pipelines have been resolved, achieving efficient installation, self-cleaning, and efficient sealing, thereby improving the overall performance and safety of the pipeline system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-27
- Publication Date
- 2026-03-27
AI Technical Summary
Existing industrial pipeline metal fittings have complex connections, high installation costs, poor compatibility, insufficient pressure and fatigue resistance, are prone to leakage and damage, have high maintenance costs, and lack self-cleaning functions.
It adopts a multi-layer composite structure consisting of a polyethylene inner tube, a fluorinated nano-silica coating, a metal tube reinforcement layer, a glass wool insulation layer, a carbon fiber cloth layer, and a rubber protective layer. Combined with quick connection technology and multiple sealing designs, it ensures standardized and efficient connection of the pipe fittings.
It improves installation efficiency and system flexibility, enhances pressure resistance and fatigue resistance, reduces heat loss, achieves self-cleaning function, ensures efficient sealing performance, and comprehensively improves the corrosion resistance and mechanical strength of pipe fittings.
Smart Images
Figure CN224049847U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to industrial pipeline technical field, concretely is a kind of industrial pipeline metal pipe fittings. BACKGROUND
[0002] In the industrial field, pipeline system is the key infrastructure for conveying various fluids (such as liquid, gas, etc.), widely used in chemical industry, petroleum, electric power, metallurgy and many other industries. The performance of industrial pipeline directly relates to the stability, safety and cost-effectiveness of production process. However, the existing industrial pipeline metal pipe fittings have many problems to be solved in actual use.
[0003] The traditional industrial pipeline metal pipe fitting connection mode is relatively complex, usually needs to spend a lot of time and manpower for welding, threaded connection and other operations, not only the installation process is cumbersome, but also the installation cost is higher. At the same time, the pipe fittings produced by different manufacturers lack unified standards in interface size and specification, leading to poor compatibility between pipe fittings, making it difficult to flexibly combine and expand according to the needs of actual industrial environment, limiting the overall performance and application range of pipeline system. In industrial production, many pipelines need to withstand high pressure and high load working environment. Although the existing metal pipe fittings have certain mechanical strength, they are prone to fatigue cracks and damage under long-term pressure and alternating load, leading to pipeline leakage or even rupture, seriously affecting production safety and normal operation. Frequent pipeline damage also increases maintenance and replacement cost, reduces production efficiency. SUMMARY
[0004] The utility model aims at providing a kind of industrial pipeline metal pipe fittings to solve the problems raised in the above background.
[0005] To achieve the above purpose, the utility model provides the following technical scheme: a kind of industrial pipeline metal pipe fittings, including pipe fitting body and butt joint sleeve, the inside of the pipe wall of pipe fitting body is provided with polyethylene inner tube, and the inside of polyethylene inner tube is uniformly provided with fluorine-containing nanometer silicon dioxide coating, the outside of polyethylene inner tube is provided with metal pipe reinforcing layer, and glass wool insulation layer is arranged between the inside of metal pipe reinforcing layer and the outside of polyethylene inner tube, the outside of metal pipe reinforcing layer is provided with carbon fiber cloth layer, and the outside of carbon fiber cloth layer is provided with rubber protective layer;
[0006] The outside of one end of pipe fitting body is provided with annular clamping groove, sealing ring is installed in the inside of annular clamping groove, and the other end of pipe fitting body is provided with butt joint sleeve, the center of butt joint sleeve is provided with butt joint inner tube, the outer wall of butt joint inner tube is uniformly provided with strip-shaped groove, each strip-shaped groove is embedded with glue capsule in the inside, butt joint groove is formed between butt joint inner tube and butt joint sleeve, and the top end of the inner wall of butt joint sleeve is provided with annular sealing groove.
[0007] Preferably, the carbon fiber cloth layer is uniformly wound on the outside of the metal pipe reinforcing layer, and the carbon fiber cloth layer is tightly combined with the metal pipe reinforcing layer through heat pressing and curing.
[0008] Preferably, the fluorine-containing nano-silica coating has a thickness of 0.1 μm to 0.5 μm, a fluorine content of 5% to 10%, and a surface roughness of Ra 0.1 μm to Ra 0.3 μm, ensuring the smoothness of the coating surface.
[0009] Preferably, the metal pipe reinforcing layer is made of stainless steel, and has a thickness of 1 mm to 2 mm.
[0010] Preferably, the glass wool insulation layer has a thickness of 5 mm to 10 mm, and is fixed to the polyethylene inner tube and the metal pipe reinforcing layer by an adhesive.
[0011] Preferably, the rubber protective layer has a thickness of 2 mm to 5 mm, and is tightly combined with the carbon fiber cloth layer through a vulcanization process.
[0012] Preferably, the glue capsule is made of epoxy resin, and remains solid at room temperature and melts when heated to 60°C to 80°C.
[0013] The utility model relates to an industrial pipeline metal pipe fitting, which has remarkable advantages and positive effects compared with the prior art through unique design and material selection, and is embodied in the following aspects:
[0014] 1. Improve installation efficiency and system flexibility
[0015] The industrial pipeline metal pipe fitting designed in the utility model adopts a standardized connection interface combined with quick connection technology. This design significantly reduces installation time and cost, making the installation process of the pipeline system more convenient and efficient. The standardized interface ensures the compatibility between pipe fittings, improves the flexibility and scalability of the system, and is suitable for the needs of various complex industrial environments.
[0016] 2. Significantly enhance the compression resistance and fatigue resistance
[0017] The carbon fiber cloth layer wrapped on the outside of the pipe body is tightly combined with the metal pipe reinforcing layer through heat pressing and curing, significantly improving the compression resistance and fatigue resistance of the pipeline. Carbon fiber material effectively improves the overall mechanical strength of the pipe fitting with its high strength and light weight characteristics, prolonging the service life of the pipeline. Even under high pressure and high load working conditions, it can maintain stable performance and reduce the frequency of maintenance and replacement due to pipeline damage.
[0018] 3. Excellent heat preservation performance
[0019] The glass wool heat preservation layer with a thickness of 5-10 mm is arranged between the polyethylene inner tube and the metal pipe reinforcing layer, and is fixed by an adhesive, thereby effectively insulating the temperature difference between the inside and outside and reducing the heat energy loss. This design not only improves the heat efficiency of the pipe, but also reduces the energy consumption, which conforms to the industrial development trend of energy saving and emission reduction.
[0020] 4. Self-cleaning function reduces maintenance cost
[0021] The application of fluorine-containing nano-silica coating utilizes its super-hydrophobicity to make impurities and dirt on the pipe wall difficult to adhere, and more easily carried away under the scouring of fluid. This self-cleaning function significantly reduces the pipe blockage and cleaning frequency, and reduces the maintenance cost. The thickness, fluorine content and surface roughness of the coating are optimized to ensure the smoothness of the coating surface, further improving the self-cleaning effect.
[0022] 5. High sealing performance
[0023] The sealing ring is installed in the annular clamping groove arranged at one end of the pipe body, and the annular sealing groove is arranged at the top end of the inner wall of the butt joint sleeve at the other end, combined with the glue capsule embedded in the strip-shaped groove on the outer wall of the butt joint inner tube, to form a multiple sealing structure. This design ensures the high sealing performance of the pipe joint, effectively prevents fluid leakage, and improves the safety and reliability of the system.
[0024] 6. Comprehensive performance improvement
[0025] The utility model discloses a multilayer composite structure design, and the corrosion resistance, wear resistance and anti-aging performance of pipe fitting are comprehensively improved. The metal pipe reinforcing layer adopts stainless steel material, and the thickness is 1-2 mm, which provides good corrosion resistance and mechanical strength. The application of the rubber protective layer is tightly combined with the carbon fiber cloth layer through vulcanization process, which further enhances the external protection ability of the pipe fitting.
[0026] In summary, the utility model discloses an industrial pipeline metal pipe fitting in improving installation efficiency, enhancing compression resistance and fatigue resistance, improving heat preservation effect, realizing self-cleaning function, ensuring high sealing and comprehensive performance improvement, compared with the prior art, has remarkable advantage and positive effect. DRAWINGS
[0027] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as the limitation to the scope. For ordinary skilled in the art, other related drawings can also be obtained without creative labor under the premise of these drawings.
[0028] Figure 1 It is the pipe body internal section structure schematic view of the utility model;
[0029] Figure 2 It is the pipe butt joint structure schematic view of the utility model;
[0030] Figure 3 It is the internal structure schematic view of the butt joint sleeve of the utility model;
[0031] Figure 4 It is the fluorine-containing nano silicon dioxide coating structure schematic view of the utility model;
[0032] Figure 5 It is the overall structure schematic view of the utility model;
[0033] In the drawing: 1, pipe body; 2, glass wool insulation layer; 3, metal pipe reinforcing layer; 4, rubber protective layer; 5, carbon fiber cloth layer; 6, polyethylene inner tube; 7, annular sealing groove; 8, butt joint sleeve; 9, sealing ring; 10, glue capsule; 11, butt joint groove; 12, strip-shaped recess; 13, butt joint inner tube; 14, fluorine-containing nano silicon dioxide coating; 15, annular clamping groove. DETAILED DESCRIPTION
[0034] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0035] Please refer to Figures 1-5 The utility model provides an embodiment: an industrial pipeline metal pipe fitting, including pipe body 1 and butt joint sleeve 8, the inside of pipe wall is provided with polyethylene inner tube 6, and the inside of polyethylene inner tube 6 is uniformly provided with fluorine-containing nano silicon dioxide coating 14, the thickness of fluorine-containing nano silicon dioxide coating 14 is 0.1 μm to 0.5 μm, and the fluorine content of fluorine-containing nano silicon dioxide coating 14 is 5% to 10%, the surface roughness of fluorine-containing nano silicon dioxide coating 14 is Ra0.1 μm to Ra0.3 μm, ensure the smoothness of coating surface.
[0036] As Figure 1 Indicated, polyethylene inner tube 6 is placed in the pipe wall inside pipe body 1. The thickness of polyethylene inner tube 6 is t1, usually between 1mm to 5mm, and the specific thickness can be adjusted according to actual application demand. The main role of polyethylene inner tube 6 is to provide an isolation layer, prevent pipe body 1 from directly contacting with fluid, thereby reducing corrosion and wear.
[0037] The polyethylene inner tube 6 is made of high-density polyethylene (HDPE) material, which has excellent corrosion resistance and wear resistance. Its inner diameter is determined according to actual application requirements, usually between 20mm and 100mm.
[0038] The polyethylene inner tube 6 is uniformly coated with a fluorine-containing nano-silica coating 14 on the inside. The thickness of the coating is controlled between 0.1μm and 0.5μm to ensure that it improves the surface smoothness without significantly increasing the flow resistance of the fluid. The fluorine content of the coating is 5% to 10%, which effectively improves the hydrophobicity and corrosion resistance of the coating.
[0039] The surface roughness of the fluorine-containing nano-silica coating 14 is Ra0.1μm to Ra0.3μm, which can ensure the smoothness of the coating surface, reduce the friction resistance of the fluid in the pipeline, and improve the conveying efficiency.
[0040] The outer side of the polyethylene inner tube 6 is provided with a metal pipe reinforcing layer 3, and the material of the metal pipe reinforcing layer 3 is stainless steel, and the thickness of the metal pipe reinforcing layer 3 is 1mm to 2mm.
[0041] The inner side of the metal pipe reinforcing layer 3 and the outer side of the polyethylene inner tube 6 are provided with a glass wool insulation layer 2, and the thickness of the glass wool insulation layer 2 is 5mm to 10mm, and the glass wool insulation layer 2 is fixed with the polyethylene inner tube 6 and the metal pipe reinforcing layer 3 through the adhesive.
[0042] Polyethylene inner tube 6: as the core part of the pipeline, used for conveying fluid.
[0043] Glass wool insulation layer 2: provided on the outer side of the polyethylene inner tube 6, used for heat preservation and insulation.
[0044] Metal pipe reinforcing layer 3: provided on the outer side of the glass wool insulation layer 2, used for enhancing the mechanical strength of the pipeline.
[0045] The outer surface of the polyethylene inner tube 6 is smooth, which is convenient for bonding with the glass wool insulation layer 2.
[0046] The glass wool insulation layer 2 is made of high-quality glass wool material, which has excellent heat preservation and insulation performance. Its thickness ranges from 5mm to 10mm, and the specific thickness is adjusted according to the actual heat preservation requirements. The glass wool insulation layer 2 is fixed with the outer side of the polyethylene inner tube 6 and the inner side of the metal pipe reinforcing layer 3 through the adhesive. The adhesive is high-temperature resistant and corrosion resistant epoxy resin glue, which ensures the firm bonding between the glass wool insulation layer 2 and the polyethylene inner tube 6 and the metal pipe reinforcing layer 3.
[0047] The metal pipe reinforcing layer 3 is made of stainless steel, which has high strength, corrosion resistance and high temperature resistance. Its thickness ranges from 1mm to 2mm, and the specific thickness is determined according to the use environment and stress condition of the pipe. The metal pipe reinforcing layer 3 is tightly wrapped on the outside of the glass wool insulation layer 2 and fixed with the glass wool insulation layer 2 through adhesive, forming a whole structure.
[0048] The outside of the metal pipe reinforcing layer 3 is provided with a carbon fiber cloth layer 5, and the outside of the carbon fiber cloth layer 5 is provided with a rubber protection layer 4.
[0049] The thickness of the rubber protection layer 4 is 2mm to 5mm, and the rubber protection layer 4 is tightly combined with the carbon fiber cloth layer 5 through vulcanization process.
[0050] The carbon fiber cloth layer 5 is evenly wound on the outside of the metal pipe reinforcing layer 3, and the carbon fiber cloth layer 5 is tightly combined with the metal pipe reinforcing layer 3 through heat pressing and curing.
[0051] The metal pipe reinforcing layer 3 is located on the inside of the pipe body 1, providing main structural support and strength guarantee.
[0052] The carbon fiber cloth layer 5 is evenly wound on the outside of the metal pipe reinforcing layer 3. Through heat pressing and curing process, the carbon fiber cloth layer 5 is tightly combined with the metal pipe reinforcing layer 3, forming a solid composite structure.
[0053] The carbon fiber cloth layer 5 not only enhances the tensile strength and bending strength of the pipe fitting, but also has good corrosion resistance.
[0054] The rubber protection layer 4 is arranged on the outside of the carbon fiber cloth layer 5, with a thickness ranging from 2mm to 5mm.
[0055] Through vulcanization process, the rubber protection layer 4 is tightly combined with the carbon fiber cloth layer 5, forming a protective layer, which effectively prevents the erosion of the external environment on the carbon fiber cloth layer 5 and the metal pipe reinforcing layer 3.
[0056] The rubber protection layer 4 also has good elasticity and sealing performance, further improving the overall performance of the pipe fitting.
[0057] The outside of one end of the pipe body 1 is provided with an annular clamping groove 15, and the inside of the annular clamping groove 15 is installed with a sealing ring 9. The other end of the pipe body 1 is provided with a butt joint sleeve 8, and the center of the butt joint sleeve 8 is provided with a butt joint inner pipe 13. The outer wall of the butt joint inner pipe 13 is evenly provided with a strip-shaped groove 12, and each strip-shaped groove 12 is embedded with a glue capsule 10. The butt joint inner pipe 13 and the butt joint sleeve 8 form a butt joint groove 11, and the top end of the inner wall of the butt joint sleeve 8 is provided with an annular sealing groove 7.
[0058] The material of the glue capsule 10 is epoxy resin, and the glue capsule 10 remains solid at room temperature and melts when heated to 60℃ to 80℃.
[0059] The material of the sealing ring 9 is a high-temperature-resistant and corrosion-resistant rubber material, which ensures good sealing performance in high-temperature and corrosive environments.
[0060] The material of the glue capsule 10 is epoxy resin, which remains solid at room temperature and melts when heated to 60-80°C.
[0061] The design of the glue capsule 10 ensures that it melts and fills the strip-shaped groove 12 when the connection is needed, and tightly combines with the inner wall of the connecting sleeve 8 to form a firm connection.
[0062] The top end of the inner wall of the connecting sleeve 8 is provided with an annular sealing groove 7 for installing a sealing ring, further ensuring the sealing performance of the connecting part.
[0063] In use,
[0064] Fluorine-containing nano-silica coating: The fluorine-containing nano-silica coating material is prepared according to a proportion of 5%-10% fluorine content. The coating is uniformly coated on the inside of the polyethylene inner tube 6 using spraying or dipping methods. The coating is solidified by heating or natural drying, and the coating thickness is controlled at 0.1-0.5 μm, and the surface roughness reaches Ra 0.1-0.3 μm.
[0065] Carbon fiber cloth layer winding: The carbon fiber cloth is uniformly wound on the outside of the metal tube reinforcing layer 3. The carbon fiber cloth layer 5 is tightly combined with the metal tube reinforcing layer 3 by heat pressing and curing process.
[0066] Rubber protective layer making and installation: Prepare rubber material and determine the thickness (2-5 mm). The rubber material is tightly combined with the carbon fiber cloth layer 5 by vulcanization process to form the rubber protective layer 4.
[0067] Pipe body assembly and annular clamping groove and connecting sleeve installation: An annular clamping groove 15 is processed on the outside of one end of the pipe body 1. A high-temperature-resistant and corrosion-resistant rubber sealing ring 9 is installed in the annular clamping groove 15.
[0068] Connecting sleeve making: The connecting sleeve 8 is made, the connecting inner tube 13 is installed in the center of the connecting sleeve 8, the strip-shaped groove 12 is processed on the outer wall of the connecting inner tube 13, and the epoxy resin glue capsule 10 is embedded. The connecting inner tube 13 and the connecting sleeve 8 form a connecting groove 11, and the annular sealing groove 7 is processed at the top end of the inner wall of the connecting sleeve 8.
[0069] Whole assembly: clean the pipe body and the butt joint part of the butt joint sleeve. Insert one pipe body with the sealing ring 9 into the butt joint groove 11 of the butt joint sleeve 8 of the other pipe. Heat the butt joint part, melt the glue capsule 10 at 60-80℃, fill the strip-shaped groove 12 and combine with the inner wall of the butt joint sleeve 8. Wait for the glue to cool and solidify, complete the butt joint of the pipe.
[0070] Obviously, the above-described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.
[0071] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting as to example embodiments consistent with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.
[0072] It should be noted that the terms "first", "second", and the like, used in the specification and in the claims of the present application are intended to distinguish analogous objects, and do not necessarily have to be used in the description in a particular sequential or chronological order. It is to be understood that the terms used herein are interchangeable under appropriate circumstances so that the embodiments of the present application described herein can be practiced in other than the particular orders illustrated or described herein.
[0073] The above only is the preferred embodiment of the present application, and does not limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims
1. An industrial piping metallic fitting comprising a fitting body (1) and a butt sleeve (8), characterized in that: The inner wall of the pipe body (1) is provided with a polyethylene inner tube (6), the inner wall of the polyethylene inner tube (6) is uniformly provided with a fluorine-containing nano-silica coating (14), the outer wall of the polyethylene inner tube (6) is provided with a metal pipe reinforcing layer (3), the inner wall of the metal pipe reinforcing layer (3) and the outer wall of the polyethylene inner tube (6) are provided with a glass wool heat preservation layer (2), the outer wall of the metal pipe reinforcing layer (3) is provided with a carbon fiber cloth layer (5), and the outer wall of the carbon fiber cloth layer (5) is provided with a rubber protection layer (4). The outer wall of one end of the pipe body (1) is provided with an annular clamping groove (15), the annular clamping groove (15) is internally provided with a sealing ring (9), the other end of the pipe body (1) is provided with a butt joint sleeve (8), the center of the butt joint sleeve (8) is provided with a butt joint inner tube (13), the outer wall of the butt joint inner tube (13) is uniformly provided with a strip-shaped groove (12), the inner wall of each strip-shaped groove (12) is embedded with a glue capsule (10), and the butt joint inner tube (13) and the butt joint sleeve (8) form a butt joint groove (11), and the top end of the inner wall of the butt joint sleeve (8) is provided with an annular sealing groove (7).
2. An industrial piping metallic fitting according to claim 1, characterized in that: The carbon fiber cloth layer (5) is uniformly wound on the outer wall of the metal pipe reinforcing layer (3), and the carbon fiber cloth layer (5) is tightly combined with the metal pipe reinforcing layer (3) through heat pressing and curing.
3. An industrial piping metallic fitting according to claim 1, characterized in that: The thickness of the fluorine-containing nano-silica coating (14) is 0.1-0.5 μm, the fluorine content of the fluorine-containing nano-silica coating (14) is 5-10%, the surface roughness of the fluorine-containing nano-silica coating (14) is Ra0.1-0.3 μm, and the smoothness of the coating surface is ensured.
4. An industrial piping metallic fitting according to claim 1, characterized in that: The material of the metal pipe reinforcing layer (3) is stainless steel, and the thickness of the metal pipe reinforcing layer (3) is 1-2 mm.
5. An industrial piping metallic fitting according to claim 1, characterized in that: The thickness of the glass wool heat preservation layer (2) is 5-10 mm, and the glass wool heat preservation layer (2) is fixed with the polyethylene inner tube (6) and the metal pipe reinforcing layer (3) through an adhesive.
6. An industrial piping metallic fitting according to claim 1, characterized in that: The thickness of the rubber protection layer (4) is 2-5 mm, and the rubber protection layer (4) is tightly combined with the carbon fiber cloth layer (5) through a vulcanization process.
7. An industrial piping metallic fitting according to claim 1, characterized in that: The material of the glue capsule (10) is epoxy resin, and the glue capsule (10) remains solid at room temperature and melts when heated to 60-80°C.