Anti-static medium-pressure gas pipe

Abstract

The utility model relates to an anti-static medium-pressure gas pipe, which comprises an inner conducting layer (1), a woven mesh layer (2) used for enhancing structural strength and establishing a conducting network, a compression-resistant enhancing layer (3), a transition layer (4) and an outer protective layer (5) used for surface static dissipation which are sequentially compounded from inside to outside, and the compression-resistant enhancing layer (3) is formed by winding high-strength fibers at an intersection angle of 30-60 degrees. According to the design, a continuous conductive path is formed through the inner conductive layer, the woven mesh layer, the transition layer and the outer protective layer, local static accumulation is avoided, and the static discharge efficiency is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medium pressure gas pipe, especially to the field of anti-static medium pressure gas pipe. BACKGROUND

[0002] In the field of industrial gas delivery, the safety performance of the anti-static medium pressure gas pipe is directly related to the production stability. In the prior art, the anti-static gas pipe often adopts a scheme of coating a surface with a conductive material, or sets a single anti-static protective layer to achieve the effect of anti-static. For example, the patent with the application number CN201820744744.8 and the patent name of high-strength anti-static PE gas pipe sets an epoxy anti-static resin layer to further strengthen the anti-static and wear-resistant performance of the PE gas pipe.

[0003] However, the structure of setting a single anti-static layer is prone to cause the conductive material to fall off due to friction, and the risk of local static accumulation is high. Therefore, it is necessary to develop a new technical design that can meet the demand for stable anti-static performance, and the structure is simple, so as to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model aims to provide an anti-static medium pressure gas pipe to solve the problems of uneven static discharge, high risk of local static accumulation and the like in the background art.

[0005] The utility model provides the following technical scheme: an anti-static medium pressure gas pipe comprises, from the inside to the outside, an inner conductive layer, a woven mesh layer for enhancing the structural strength and establishing a conductive network, a pressure-resistant reinforcing layer, a transition layer and an outer protective layer for surface static dissipation, the pressure-resistant reinforcing layer is formed by winding high-strength fibers at a cross angle of 30°-60°.

[0006] Preferably, the inner conductive layer is a graphene modified polyethylene composite material with a thickness of 0.5-1.2 mm.

[0007] Preferably, the woven mesh layer is a grid structure mixedly woven by carbon fibers and copper wires, and the grid density is 20-30 meshes.

[0008] Preferably, the diameter of the copper wire is 0.05-0.1 mm, and the weaving ratio of the carbon fibers to the copper wire is 3:1-5:1.

[0009] Preferably, the pressure-resistant reinforcing layer is cross-wound with aramid fibers.

[0010] Preferably, the transition layer is an epoxy resin coating layer containing metalized ceramic particles, and the particle size distribution is 50-200 μm.

[0011] Preferably, the outer protective layer is polyurethane.

[0012] Preferably, the ratio of the inner conductive layer, the braided mesh layer, the compressive strength layer, the transition layer (4), and the outer protective layer is 1:0.2:1.5:0.1:0.8.

[0013] Preferably, the outer protective layer has spiral protrusions, and the spiral protrusions are fixedly connected to or integrally formed with the outer protective layer.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model discloses an antistatic medium-pressure gas pipe comprising, from the inside out, an inner conductive layer, a braided mesh layer for enhancing structural strength and establishing a conductive network, a pressure-resistant reinforcing layer, a transition layer, and an outer protective layer for surface static dissipation. The pressure-resistant reinforcing layer is formed by winding high-strength fibers at a 30°-60° cross angle. A continuous conductive path is formed through the inner conductive layer, braided mesh layer, transition layer, and outer protective layer, avoiding localized static accumulation and effectively improving static discharge efficiency.

[0016] 2. The antistatic medium-pressure gas pipe of this utility model has an inner conductive layer made of graphene-modified polyethylene composite material with a thickness of 0.5-1.2 mm. This design allows for the rapid discharge of static charges generated by friction on the inner surface of the pipe wall.

[0017] 3. The antistatic medium-pressure gas pipe of this utility model has a woven mesh layer made of carbon fiber and copper wire, with a mesh density of 20-30 meshes. The copper wire diameter is 0.05-0.1mm, and the weaving ratio of carbon fiber to copper wire is 3:1-5:1. Through this arrangement, the carbon fiber network contacts the inner conductive layer, forming a radial conductive bridge, and the copper wire weaving nodes further reduce the interlayer contact resistance.

[0018] 4. The antistatic medium-pressure gas pipe of this utility model has a compressive strength reinforcing layer made of cross-wound aramid fibers. This design converts axial pressure into fiber tensile stress, effectively improving compressive strength compared to traditional orthogonal winding.

[0019] 5. The antistatic medium-pressure gas pipe of this utility model has a transition layer consisting of an epoxy resin coating containing metallized ceramic particles with a particle size distribution of 50-200μm. This design creates microscopic support points, preventing deformation of the outer layer from being transmitted to the inner layer.

[0020] 6. The antistatic medium-pressure gas pipe of this utility model has an outer protective layer of polyurethane. This design enables it to possess both wear resistance and surface static dissipation properties.

[0021] 7. In the antistatic medium-pressure gas pipe of this utility model, the ratio of the inner conductive layer, the braided mesh layer, the pressure-resistant reinforcing layer, the transition layer, and the outer protective layer is 1:0.2:1.5:0.1:0.8. This design effectively disperses the expansion stress of the inner layer, improves the pressure resistance, and at the same time, the thin transition layer reduces the interfacial shear force.

[0022] 8. The antistatic medium-pressure gas pipe of this utility model has a spiral protrusion on the outer protective layer, which is fixedly connected to or integrally formed with the outer protective layer. Turbulent flow is used to reduce gas velocity and decrease static electricity generation. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional schematic diagram of the antistatic medium-pressure gas pipe of this utility model.

[0025] In the attached figures, 1 is the inner conductive layer; 2 is the woven mesh layer; 3 is the compressive strength layer; 4 is the transition layer; 5 is the outer protective layer; and 51 is the spiral protrusion. Detailed Implementation

[0026] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0027] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation" and "connection" 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, an electrical connection, or a connection that allows communication between the components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] In the description of this application, it should be understood that the terms "upper", "lower", "side", "front", "rear", etc., indicate the orientation or positional relationship based on the installation orientation or positional relationship, and are only for the convenience of describing this application and 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, and therefore should not be construed as a limitation of this application.

[0030] In the description of this application, it should be noted that the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0031] It should also be noted that in the embodiments of this application, the same reference numerals are used to represent the same component or part. For the same part in the embodiments of this application, the reference numerals may only be used to mark one part or component as an example. It should be understood that the reference numerals are also applicable to other identical parts or components.

[0032] Furthermore, in this application, the technical features described in an open-ended manner include both closed technical solutions composed of the listed features and open technical solutions that include the listed features.

[0033] To further understand the utility model content, features, and effects of this application, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings:

[0034] like Figure 1 As shown, the antistatic medium-pressure gas pipe comprises, from the inside out, an inner conductive layer 1, a braided mesh layer 2 for enhancing structural strength and establishing a conductive network, a pressure-resistant reinforcing layer 3, a transition layer 4, and an outer protective layer 5 for surface static dissipation. The pressure-resistant reinforcing layer 3 is formed by winding high-strength fibers at a 30°-60° cross angle. In this embodiment, the pressure-resistant reinforcing layer is formed by winding high-strength fibers at a 45° cross angle. A continuous conductive path is formed by the inner conductive layer, the braided mesh layer, the transition layer, and the outer protective layer, avoiding localized static accumulation and effectively improving static discharge efficiency. Of course, the above structure is not limited to this and can be other structures that perform the same function.

[0035] Specifically, the inner conductive layer 1 is a graphene-modified polyethylene composite material with a thickness of 0.5-1.2 mm. In this embodiment, this design allows for the rapid discharge of static charges generated by friction on the inner surface of the pipe wall. Of course, the structure described above is not limited to this and can be other structures that serve the same purpose.

[0036] Specifically, the woven mesh layer is a grid structure composed of carbon fiber and copper wire, with a mesh density of 20-30 meshes. The copper wire diameter is 0.05-0.1 mm, and the weaving ratio of carbon fiber to copper wire is 3:1-5:1. In this embodiment, through this arrangement, the carbon fiber network contacts the inner conductive layer, forming a radial conductive bridge, and the copper wire weaving nodes further reduce the interlayer contact resistance. Of course, the above structure is not limited to this and can be other structures that serve the same function.

[0037] Specifically, the compressive strength reinforcement layer 3 is composed of cross-wound aramid fibers. This configuration converts axial pressure into tensile stress in the fibers, effectively improving compressive strength compared to traditional orthogonal winding. In this embodiment, however, the structure is not limited to this and can be other structures that perform the same function.

[0038] Specifically, transition layer 4 is an epoxy resin coating containing metallized ceramic particles with a particle size distribution of 50-200 μm. In this embodiment, this configuration forms microscopic support points to prevent deformation of the outer layer from being transmitted to the inner layer. Of course, the above structure is not limited to this and can be other structures that serve the same function.

[0039] Specifically, the outer protective layer 5 is made of polyurethane. In this embodiment, this design provides both wear resistance and surface electrostatic dissipation properties. Of course, the structure described above is not limited to this and can be other structures that serve the same function.

[0040] Specifically, the ratio of the inner conductive layer 1, the braided mesh layer 2, the compressive strength reinforcing layer 3, the transition layer 4, and the outer protective layer 5 is 1:0.2:1.5:0.1:0.8. In this embodiment, this arrangement effectively disperses the expansion stress of the inner layers, improving compressive strength, while the thin transition layer reduces interfacial shear force. Of course, the ratio of each layer is not limited to this and can be other ratios that serve the same purpose.

[0041] Specifically, the outer protective layer 5 has spiral protrusions 51, which are fixedly connected to or integrally formed with the outer protective layer 5. In this embodiment, the gas flow rate is reduced by turbulent disturbance, thereby reducing the amount of static electricity generated. Of course, the above structure is not limited to this and can be other structures or shapes that reduce the amount of static electricity generated.

[0042] Working principle: The graphene inner conductive layer forms a continuous conductive path, rapidly dissipating the static charge generated by friction on the inner surface of the tube wall. The braided layer contacts the inner conductive layer through a carbon fiber network, forming a radial conductive bridge, and the copper wire braid nodes further reduce the interlayer contact resistance. The transition layer is an epoxy resin coating containing metallized ceramic particles, forming a "point-to-surface" conductive path, bridging the potential difference between the inner and outer layers through a metal plating layer.

[0043] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. The spiral protrusions on the outer protective layer increase the discharge contact area, and the outer protective layer is made of polyurethane, which can effectively achieve rapid release of static electricity from the environment. Through the above layer structure, the resistivity of each layer increases sequentially from the inside to the outside, forming a potential gradient, guiding static electricity to migrate in a predetermined direction, and avoiding local charge accumulation. Among them, the compressive strength reinforcement layer is made of aramid fibers cross-wound, which effectively improves the axial compressive strength support.

[0044] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An antistatic medium-pressure gas pipe, characterized in that: It comprises an inner conductive layer (1), a braided mesh layer (2) for enhancing structural strength and establishing a conductive network, a compressive strength layer (3), a transition layer (4), and an outer protective layer (5) for surface static dissipation, which are sequentially compounded from the inside to the outside. The compressive strength layer (3) is formed by winding high-strength fibers at a cross angle of 30°-60°.

2. The antistatic medium-pressure gas pipe according to claim 1, characterized in that: The inner conductive layer (1) is a graphene-modified polyethylene composite material with a thickness of 0.5-1.2 mm.

3. The antistatic medium-pressure gas pipe according to claim 1 or 2, characterized in that: The woven mesh layer (2) is a mesh structure made of carbon fiber and copper wire, with a mesh density of 20-30 mesh.

4. The antistatic medium-pressure gas pipe according to claim 3, characterized in that: The copper wire has a diameter of 0.05-0.1 mm, and the ratio of the carbon fiber to the copper wire in the weaving process is 3:1-5:

1.

5. The antistatic medium-pressure gas pipe according to claim 4, characterized in that: The compressive strengthening layer (3) is composed of aramid fibers cross-wound.

6. The antistatic medium-pressure gas pipe according to claim 4 or 5, characterized in that: The transition layer (4) is an epoxy resin coating containing metallized ceramic particles with a particle size distribution of 50-200 μm.

7. The antistatic medium-pressure gas pipe according to claim 6, characterized in that: The outer protective layer (5) is polyurethane.

8. The antistatic medium-pressure gas pipe according to claim 7, characterized in that: The ratio of the inner conductive layer (1), the braided mesh layer (2), the compressive strength layer (3), the transition layer (4), and the outer protective layer (5) is 1:0.2:1.5:0.1:0.

8.

9. The antistatic medium-pressure gas pipe according to claim 7 or 8, characterized in that: The outer protective layer (5) is provided with a spiral protrusion (51), and the spiral protrusion (51) and the outer protective layer (5) are fixedly connected or integrally formed.

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