FEP tube with pressure resistance and explosion resistance

Abstract

This utility model provides a pressure-resistant and explosion-proof FEP pipe, relating to the field of FEP pipe technology, to solve the problem that existing FEP pipes lack explosion-proof functionality. When an FEP pipe is damaged and media leaks, the leaked chemical medium mixes with air to form an explosive mixture, which can easily lead to an explosion risk and pose a threat to production safety. The invention includes a base layer A, which is composed of FEP material. A connecting layer is provided at the outer end of the base layer A, and an outer layer is provided at the outer end of the connecting layer. Connecting protrusions in the outer layer interlock with connecting grooves in the connecting layer. By attaching the outer layer to the outside of the base layer A and fixing it with the connecting layer, the outer layer forms an additional protective barrier. When the base layer is damaged, the outer layer can provide a secondary barrier to the internal media, preventing the chemical medium from directly leaking to the outside and mixing with air to form an explosive mixture, significantly reducing the explosion risk and improving the safety of the chemical production process.

Description

Technical Field

[0001] This utility model belongs to the field of FEP pipe technology, and more specifically, it relates to FEP pipe with pressure resistance and explosion protection. Background Technology

[0002] FEP pipe, short for polytetrafluoroethylene propylene pipe, is mainly composed of fluorinated ethylene propylene copolymer. FEP pipe has excellent chemical corrosion resistance and can resist the erosion of strong acids, strong alkalis, salts, and many organic solvents. This characteristic makes it an ideal choice for conveying various corrosive chemicals (such as sulfuric acid, hydrochloric acid, sodium hydroxide, etc.) in the chemical industry. It is also widely used as the lining material for reaction vessels and storage containers, effectively protecting the equipment body from corrosion by chemical media and extending the service life of the equipment.

[0003] Based on existing technology, it has been found that existing FEP tubes have some shortcomings: First, FEP pipes have poor pressure resistance. Compared with more rigid metal pipes or reinforced plastic pipes (such as steel-lined plastic pipes), FEP pipes have limited structural strength and cannot withstand high internal medium pressure, thus limiting their applicability under high-pressure conditions.

[0004] Secondly, FEP pipes do not have explosion-proof function. When FEP pipes are damaged and media leaks, the leaked chemical media will mix with air to form an explosive mixture, which can easily cause an explosion risk and pose a threat to production safety. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model relates to an FEP pipe with pressure resistance and explosion protection, solving the problems of poor pressure resistance of existing FEP pipes. Compared with rigid metal pipes or reinforced plastic pipes (such as steel-lined plastic pipes), FEP pipes have limited structural strength and cannot withstand high internal medium pressure, thus limiting their applicability under high-pressure conditions. Furthermore, FEP pipes do not have explosion-proof function. When an FEP pipe is damaged and medium leaks, the leaked chemical medium will mix with air to form an explosive mixture, which can easily cause an explosion risk and pose a threat to production safety.

[0006] The first aspect of this utility model provides an FEP pipe with pressure resistance and explosion protection, achieved by the following specific technical means: An FEP pipe with pressure resistance and explosion protection includes: Base layer A; the base layer A is made of FEP material; a connecting layer is provided at the outer end of the base layer A, and an outer layer is provided at the outer end of the connecting layer. The connecting protrusion in the outer layer is inserted into the connecting groove in the connecting layer. Sealing rings are provided on both outer sides of the base layer A. The sealing rings are fixed between the base layer A and the outer layer by heat fusion connection.

[0007] Furthermore, a base layer B is provided on the inner side of the base layer A. The base layer B is fixed to the base layer A by means of heat fusion connection. The base layer B is provided with a reinforcing member that is spirally wound on the outside. The reinforcing member is wrapped by the base layer A.

[0008] Furthermore, the outer end of the connecting layer has a connecting groove in a spiral shape.

[0009] Furthermore, the outer layer is made of FEP material, and the inner end of the outer layer has a spiral-shaped connecting protrusion.

[0010] Furthermore, the sealing ring is made of the same FEP material as the base layer A and the outer layer.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. In this device, a spiral-wound reinforcing member is used on the outside of the base layer B, and the base layer A is used to wrap and fix it. By utilizing the structural support of the reinforcing member, the overall structural strength and deformation resistance of the FEP pipe are greatly enhanced. Compared with the existing pipes made of FEP material alone, this structure can withstand higher internal medium pressure and expand the application range of FEP pipes under high pressure conditions.

[0012] 2. In this device, by attaching an outer layer to the outside of the base layer A and fixing the outer layer with the help of a connecting layer, an additional protective barrier is formed. When the base layer is damaged, the outer layer can play a secondary barrier role against the internal medium, preventing the chemical medium from leaking directly to the outside and mixing with the air to form an explosive mixture, which significantly reduces the risk of explosion and improves the safety of the chemical production process. Attached Figure Description

[0013] Those skilled in the art will gain a better understanding of the present invention through the accompanying drawings, and the advantages of the present invention will be more clearly demonstrated. The drawings described herein are for illustrative purposes only for the selected embodiments and not for all possible implementations, and are not intended to limit the scope of the present invention.

[0014] In the attached diagram: Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a schematic diagram showing the disassembly effect of this utility model.

[0016] Figure 3 This is a schematic diagram of the outer layer cross-section structure of this utility model.

[0017] Figure 4 This is a schematic diagram of the inner cross-sectional structure of this utility model.

[0018] In the diagram, the correspondence between component names and drawing numbers is as follows: 1. Base layer A; 101. Base layer B; 102. Reinforcing component; 2. Connecting layer; 201. Connecting groove; 3. Outer layer; 301. Connecting protrusion; 4. Sealing ring. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1: As shown in the attached document Figure 1 To be continued Figure 4 As shown: This utility model provides an FEP pipe with pressure resistance and explosion protection, including: a base layer A1; the base layer A1 is composed of FEP material; a connecting layer 2 is provided at the outer end of the base layer A1, and an outer layer 3 is provided at the outer end of the connecting layer 2; a connecting protrusion 301 in the outer layer 3 is inserted into a connecting groove 201 in the connecting layer 2; sealing rings 4 are provided on both outer sides of the base layer A1, and the sealing rings 4 are fixed between the base layer A1 and the outer layer 3 by heat fusion connection.

[0021] As a second embodiment of this application, based on embodiment 1, such as Figure 4 As shown, a base layer B101 is provided on the inner side of the base layer A1. The base layer B101 is fixed to the base layer A1 by a heat fusion connection. A reinforcing member 102 is spirally wound on the outside of the base layer B101. The reinforcing member 102 is wrapped by the base layer A1.

[0022] This application uses a metal reinforcement 102 spirally wound around the outer end of the base layer B101 and wrapped by the base layer A1. The reinforcement 102 can improve the strength of the base layer A1 and the base layer B101, thereby enhancing the pressure resistance of the FEP tube.

[0023] As a third embodiment of this application, based on embodiment 1, such as Figure 3 As shown, the outer end of the connecting layer 2 has a spiral connecting groove 201; the outer layer 3 is made of FEP material, and the inner end of the outer layer 3 has a spiral connecting protrusion 301.

[0024] This application provides an outer layer 3 at the outer end of the connecting layer 2, and the connecting protrusion 301 of the outer layer 3 is inserted into the connecting groove 201. This allows the outer layer 3 to be fixed outside the connecting layer 2, preventing the formation of an explosive mixture due to material corrosion and damage when the base layer is damaged.

[0025] In this embodiment of the utility model, such as Figure 3 As shown, the sealing ring 4 is made of the same FEP material as the base layer A1 and the outer layer 3. By fixing the sealing ring 4 between the base layer A1 and the outer layer 3 by heat fusion, it can achieve the effect of sealing the connection.

[0026] The specific usage and function of this embodiment are as follows: In this utility model, such as Figures 1 to 4 As shown, the reinforcing member 102 is fixed to the outside of the base layer B101 by spiral winding. The base layer A1 wraps around the reinforcing member 102 and is fixed to the base layer B101 by heat fusion, completing the assembly of the inner layer structure of the pipe. The outer layer 3 is fitted onto the outside of the base layer A1, so that the outer layer 3 and the connecting layer 2 at the outer end of the base layer A1 are tightly fitted, and the connecting protrusion 301 is rotated and inserted into the connecting groove 201. The sealing ring 4 is placed at the connection points on both sides between the base layer A1 and the outer layer 3, and the sealing ring 4 is fused and fixed to the base layer A1 and the outer layer 3 by heat fusion process, completing the assembly of the entire FEP pipe. During use, when corrosive chemicals are transported in the pipe... When the medium is in use, the base layer A1 and base layer B101, thanks to the properties of FEP material, resist the corrosive effects of the medium. At the same time, the spirally wound reinforcing member 102 provides structural support under the pressure of the medium, offsetting part of the internal pressure, reducing the deformation of the pipe caused by pressure, and ensuring the stable operation of the pipe under high pressure conditions. If the base layer A1 is accidentally damaged, the outer layer 3 will form a physical barrier to prevent the internal medium from leaking directly into the external environment. The sealing ring 4 further enhances the sealing performance at the connection between the base layer A1 and the outer layer 3, preventing the medium from leaking from the connection gap, thereby reducing the possibility of the medium mixing with air to form an explosive mixture and ensuring safety during use.

[0027] The foregoing disclosure provides illustrations and descriptions, but is not intended to be exhaustive or to limit the embodiments to the precise forms disclosed. Modifications and variations can be made based on the above disclosure, or modifications and variations can be derived from the practice of the embodiments.

[0028] Even though specific combinations of features are recited in the claims or disclosed in the specification, these combinations are not intended to limit the disclosure of various embodiments. In fact, many of these features can be combined in ways not specifically recited in the claims and / or not specifically disclosed in the specification. Although each dependent claim listed below may depend directly on only one claim, the disclosure of various embodiments includes each dependent claim in combination with every other claim in the claim set.

Claims

1. An FEP pipe with pressure resistance and explosion protection, comprising: The base layer A (1) is made of FEP material. The base layer A (1) is characterized in that a connecting layer (2) is provided at the outer end of the base layer A (1), an outer layer (3) is provided at the outer end of the connecting layer (2), a connecting protrusion (301) in the outer layer (3) is inserted into a connecting groove (201) in the connecting layer (2), and sealing rings (4) are provided on both sides of the outer side of the base layer A (1). The sealing rings (4) are fixed between the base layer A (1) and the outer layer (3) by heat fusion connection.

2. The FEP pipe with pressure resistance and explosion protection according to claim 1, characterized in that, The base layer A (1) has a base layer B (101) on its inner side. The base layer B (101) is fixed to the base layer A (1) by heat fusion connection. The base layer B (101) has a reinforcing member (102) spirally wound on its outer side. The reinforcing member (102) is wrapped by the base layer A (1).

3. The FEP pipe with pressure resistance and explosion protection according to claim 1, characterized in that, The outer end of the connecting layer (2) is provided with a connecting groove (201) in a spiral shape.

4. The FEP pipe with pressure resistance and explosion protection according to claim 1, characterized in that, The outer layer (3) is made of FEP material, and the inner end of the outer layer (3) is provided with a spiral connecting protrusion (301).

5. The FEP pipe with pressure resistance and explosion protection according to claim 1, characterized in that, The sealing ring (4) is made of the same FEP material as the base layer A (1) and the outer layer (3).

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