Anti-static rtp tube

Abstract

The utility model relates to pipeline engineering technical field, concretely is a kind of anti-static RTP pipe, including pipe body, the pipe body includes outer layer reinforcing layer, intermediate thermoplastic plastic layer and inner layer conductive coating, the inner layer conductive coating is evenly coated on the inner wall of intermediate layer, the conductive coating is made of carbon nanometer material and polymer matrix composite, the outer layer reinforcing layer adopts glass fiber braided structure.The metal wire net of outer layer in the device is used as electrostatic conduction channel, further guides electrostatic to grounding system, to avoid the generation of electrostatic spark, in addition, clamp connection uses conductive elastic material, ensures the conductive continuity of entire pipeline system, improves the overall anti-static reliability, the outer coating ultraviolet-resistant polyurethane protective layer can effectively resist ultraviolet aging in long-term outdoor use, further delays material aging process, pipeline has higher pressure resistance, corrosion resistance, anti-aging and sealing performance.

Description

Technical Field

[0001] This utility model relates to the field of pipeline engineering technology, specifically to an anti-static RTP pipe. Background Technology

[0002] In the field of industrial fluid transportation, especially in pipeline systems involving flammable, explosive, or high-dust environments such as those carrying oil, natural gas, and chemicals, static electricity buildup is a common and serious problem. Friction between the fluid and the inner wall of the pipe easily generates static charge. If this charge is not effectively and promptly discharged, it can lead to the generation of electrostatic sparks, potentially causing explosions or fires. Therefore, effectively preventing static electricity buildup and safely discharging it has become a pressing technical challenge.

[0003] Meanwhile, pipelines exposed to outdoor conditions or buried underground in complex environments face significant challenges in terms of sealing, corrosion resistance, and mechanical strength. Traditional single-layer pipeline structures often struggle to meet high-strength requirements, especially when dealing with corrosive media or high-pressure conditions, where impermeability and structural strength become paramount. Furthermore, ultraviolet radiation is a crucial factor affecting the service life of plastic pipelines; prolonged exposure can lead to material aging and embrittlement, thereby reducing the overall performance of the pipeline. Utility Model Content

[0004] The purpose of this invention is to provide an anti-static RTP tube to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an antistatic RTP tube, comprising a tube body, the tube body comprising an outer reinforcing layer, an intermediate thermoplastic layer and an inner conductive coating layer, the inner conductive coating layer being uniformly coated on the inner wall of the intermediate layer, the conductive coating layer being composed of carbon nanomaterials and a polymer matrix, and the outer reinforcing layer being a glass fiber braided structure.

[0006] As a preferred embodiment of this utility model, the conductive coating contains 3% to 8% carbon nanomaterials, the carbon nanomaterials are graphene, the polymer matrix is ​​polyethylene, and the thickness of the conductive coating is 0.05 mm to 0.2 mm, which has good conductivity and wear resistance.

[0007] As a preferred embodiment of this utility model, the intermediate thermoplastic layer is a multi-layer co-extruded structure, which includes an inner layer of high-density polyethylene and an outer layer of corrosion-resistant polyolefin. The layers are connected by an adhesive layer, which is maleic anhydride-grafted polyethylene, thereby improving the overall sealing performance and impermeability of the pipeline.

[0008] As a preferred technical solution of this utility model, the outer reinforcing layer is provided with an embedded metal wire mesh, the metal wire mesh is made of stainless steel, and the diameter of the metal wire mesh is 0.3mm to 0.8mm, which further improves the static electricity discharge efficiency of the pipeline.

[0009] As a preferred technical solution of this utility model, the pipe body is provided with quick connection structure at both ends. The quick connection structure includes a flange and a clamp matching structure, and the clamp is provided with conductive elastic material inside.

[0010] As a preferred embodiment of this utility model, the tube body is covered with an ultraviolet-proof protective layer, which is a polyurethane material containing an ultraviolet absorber, and the thickness of the ultraviolet-proof protective layer is 0.1mm to 0.3mm. The ultraviolet absorber is a benzotriazole compound.

[0011] As a preferred embodiment of this utility model, the inner wall of the tube is provided with a spiral guide groove, the depth of the guide groove is 0.2mm to 0.5mm, and the guide groove is distributed in an equidistant spiral shape.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) In this device, a conductive coating composed of graphene and polyethylene is set inside the pipe body, and stainless steel wire mesh is embedded in the outer reinforcing layer to form a dual electrostatic discharge mechanism. The graphene in the conductive coating has excellent conductivity. When the fluid flows in the pipe, the static charge generated by friction can be quickly conducted to the pipe wall surface through the conductive coating. The outer metal wire mesh serves as an electrostatic discharge channel to further guide the static electricity to the grounding system, thereby avoiding the generation of electrostatic sparks. In addition, the clamp connection uses conductive elastic material to ensure the conductivity continuity of the entire pipeline system, improve the overall anti-static reliability, significantly reduce the risk of accidents caused by electrostatic discharge in flammable, explosive or high dust environments, and ensure the safety of industrial transportation process.

[0014] (2) The intermediate thermoplastic layer in this device adopts a multi-layer co-extrusion structure, including an inner layer of high-density polyethylene and an outer layer of corrosion-resistant polyolefin. The interlayer bonding is enhanced by a maleic anhydride-grafted polyethylene adhesive layer. This design not only improves impermeability and corrosion resistance but also enhances overall sealing. Meanwhile, the outer reinforcing layer adopts a glass fiber braided structure with embedded metal mesh, which significantly improves the mechanical strength and pressure resistance of the pipeline. The external UV-resistant polyurethane protective layer can effectively resist UV aging during long-term outdoor use, further delaying the material aging process. The pipeline has higher pressure resistance, corrosion resistance, aging resistance, and sealing performance, adapts to complex working conditions, reduces maintenance frequency, and extends service life. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the front structure of an antistatic RTP tube according to an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the side structure of an antistatic RTP tube according to an embodiment of the present invention;

[0018] Figure 3 This is a structural schematic diagram of an enlarged view of point A on the side of an antistatic RTP tube according to an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the internal structure of an antistatic RTP tube according to an embodiment of the present utility model.

[0020] Figure label:

[0021] 1. Reinforcing layer; 2. Thermoplastic layer; 3. Conductive coating; 4. High-density polyethylene; 5. Corrosion-resistant polyolefin; 6. Adhesive layer; 7. Metal wire mesh; 8. Flange; 9. Clamp; 10. Conductive elastic material; 11. UV protection layer; 12. Pipe body; 13. Spiral guide groove. Detailed Implementation

[0022] The utility model will now be further described with reference to the accompanying drawings and specific embodiments: Example 1

[0023] refer to Figures 1 to 4 Example 1 describes a tube body 12, which includes an outer reinforcing layer 1, an intermediate thermoplastic layer 2, and an inner conductive coating layer 3. The inner conductive coating layer 3 is uniformly coated on the inner wall of the intermediate layer and is composed of carbon nanomaterials and a polymer matrix. The outer reinforcing layer 1 has a glass fiber woven structure. The carbon nanomaterial content in the conductive coating layer 3 is 3% to 8%, and the carbon nanomaterial is graphene. The polymer matrix is ​​polyethylene, and the thickness of the conductive coating layer 3 is 0.05 mm to 0.2 mm. The outer reinforcing layer 1 is provided with an embedded metal mesh 7, which is made of stainless steel and has a diameter of 0.3 mm to 0.8 mm. The inner wall of the tube body 12 is provided with spiral guide grooves 13, which have a depth of 0.2 mm to 0.5 mm and are distributed in an equidistant spiral pattern.

[0024] In this embodiment, a dual electrostatic discharge mechanism is formed by setting a conductive coating 3 composed of graphene and polyethylene inside the pipe body 12 and embedding a stainless steel wire mesh 7 in the outer reinforcing layer 1. The graphene in the conductive coating 3 has excellent conductivity. When the fluid flows in the pipe, the static charge generated by friction can be quickly conducted to the pipe wall surface through the conductive coating 3. The outer wire mesh 7 serves as an electrostatic discharge channel, further guiding the static electricity to the grounding system, thereby avoiding the generation of electrostatic sparks. In addition, the clamp 9 connection uses a conductive elastic material 10 to ensure the conductivity continuity of the entire pipeline system, improve the overall anti-static reliability, significantly reduce the risk of accidents caused by electrostatic discharge in flammable, explosive or high dust environments, and ensure the safety of industrial transportation processes. Example 2

[0025] refer to Figures 1 to 4 Example 2 further illustrates Example 1, including a thermoplastic layer 2. The intermediate thermoplastic layer 2 is a multi-layer co-extruded structure, comprising an inner high-density polyethylene 4 and an outer corrosion-resistant polyolefin 5. The layers are connected by an adhesive layer 6, which is maleic anhydride-grafted polyethylene. The pipe body 12 has quick-connect structures at both ends, including a flange 8 and a clamp 9. The clamp 9 has a conductive elastic material 10 inside. The pipe body 12 is covered with an ultraviolet-resistant protective layer 11, which is a polyurethane material containing an ultraviolet absorber. The thickness of the ultraviolet-resistant protective layer 11 is 0.1 mm to 0.3 mm, and the ultraviolet absorber is a benzotriazole compound.

[0026] In this embodiment, the intermediate thermoplastic layer 2 adopts a multi-layer co-extruded structure, including an inner high-density polyethylene layer 4 and an outer corrosion-resistant polyolefin layer 5. The bonding force between the layers 1 is enhanced by a maleic anhydride-grafted polyethylene adhesive layer 6. This design not only improves impermeability and corrosion resistance but also enhances overall sealing. Simultaneously, the outer reinforcing layer 1 employs a glass fiber braided structure with embedded metal mesh 7, significantly improving the pipe's mechanical strength and pressure resistance. The externally wrapped UV-resistant polyurethane protective layer effectively resists UV aging during long-term outdoor use, further delaying the material aging process. The pipe possesses higher pressure resistance, corrosion resistance, aging resistance, and sealing performance, adapting to complex working environments, reducing maintenance frequency, and extending service life.

[0027] In practical applications, a dual electrostatic discharge mechanism is formed by setting a conductive coating 3 composed of graphene and polyethylene composite inside the pipe body 12 and embedding a stainless steel wire mesh 7 in the outer reinforcing layer 1. The graphene in the conductive coating 3 has excellent conductivity. When fluid flows in the pipe, the static charge generated by friction can be quickly conducted to the pipe wall surface through the conductive coating 3. The outer wire mesh 7 serves as an electrostatic discharge channel, further guiding the static electricity to the grounding system, thereby avoiding the generation of electrostatic sparks. In addition, the clamp 9 connection uses a conductive elastic material 10 to ensure the conductivity of the entire pipeline system. Electrical continuity enhances overall anti-static reliability, significantly reducing the risk of accidents caused by electrostatic discharge in flammable, explosive, or high-dust environments, ensuring safety during industrial transportation. The intermediate thermoplastic layer 2 employs a multi-layer co-extrusion structure, including an inner high-density polyethylene layer 4 and an outer corrosion-resistant polyolefin layer 5, with a maleic anhydride-grafted polyethylene adhesive layer 6 reinforcing the bonding strength between layers 1. This design not only improves impermeability and corrosion resistance but also enhances overall sealing. Simultaneously, the outer reinforcing layer 1 utilizes a fiberglass braided structure with embedded metal mesh 7, significantly improving the pipe's mechanical strength and pressure resistance. The external UV-resistant polyurethane protective layer effectively resists UV aging during long-term outdoor use, further slowing down the material aging process. The pipe possesses higher pressure resistance, corrosion resistance, aging resistance, and sealing performance, adapting to complex working conditions, reducing maintenance frequency, and extending service life.

[0028] In the description of this utility model, it should be noted that the terms "top," "bottom," "one side," "the other side," "front," "back," "middle part," "inner," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An antistatic RTP tube, characterized in that, The tube (12) includes an outer reinforcing layer (1), an intermediate thermoplastic layer (2) and an inner conductive coating (3). The inner conductive coating (3) is uniformly coated on the inner wall of the intermediate layer. The conductive coating (3) is composed of carbon nanomaterials and a polymer matrix. The outer reinforcing layer (1) adopts a glass fiber braided structure.

2. The antistatic RTP tube according to claim 1, characterized in that, The conductive coating (3) contains 3% to 8% carbon nanomaterials, the carbon nanomaterials are graphene, the polymer matrix is ​​polyethylene, and the thickness of the conductive coating (3) is 0.05 mm to 0.2 mm.

3. The antistatic RTP tube according to claim 1, characterized in that, The intermediate thermoplastic layer (2) is a multi-layer co-extruded structure, which includes an inner high-density polyethylene (4) and an outer corrosion-resistant polyolefin (5). The layers are connected by an adhesive layer (6), which is maleic anhydride-grafted polyethylene.

4. The antistatic RTP tube according to claim 1, characterized in that, The outer reinforcing layer (1) is provided with an embedded metal mesh (7), which is made of stainless steel and has a diameter of 0.3 mm to 0.8 mm.

5. The antistatic RTP tube according to claim 1, characterized in that, The pipe body (12) is provided with quick connection structures at both ends. The quick connection structure includes a flange (8) and a clamp (9) mating structure. The clamp (9) is provided with conductive elastic material (10) inside.

6. The antistatic RTP tube according to claim 1, characterized in that, The tube body (12) is covered with an ultraviolet-proof protective layer (11), which is a polyurethane material containing an ultraviolet absorber. The thickness of the ultraviolet-proof protective layer (11) is 0.1 mm to 0.3 mm, and the ultraviolet absorber is a benzotriazole compound.

7. The antistatic RTP tube according to claim 1, characterized in that, The inner wall of the tube (12) is provided with a spiral guide groove (13), the depth of the spiral guide groove (13) is 0.2mm to 0.5mm, and the spiral guide groove (13) is distributed in an equidistant spiral shape.

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