Joint for a metal-wrapped reinforced composite pipe

Abstract

The utility model provides a kind of joint for metal winding reinforced composite pipe, it is related to metal winding reinforced composite pipe auxiliary structure technical field, it aims at solving the problem that existing joint for metal winding reinforced composite pipe adopts hot melt joint, conventional joint adopts single-layer structure design, and the relative sealing of local structure of joint is poor, including pipe body, the pipe body is metal winding reinforced composite material, the right end of the pipe body is movably connected with joint, the abutting position of the pipe body and joint is handled using welding, the joint adopts multilayer structure setting, the inner layer of the joint is sealed inner tube, the outer layer of the joint is outer sealing tube, the middle part of the outer sealing tube is designed using bellows.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary structure technology for metal-wound reinforced composite pipes, and in particular to a connector for metal-wound reinforced composite pipes. Background Technology

[0002] Metal-wound reinforced composite pipe is a type of composite pipe made by tightly bonding high-strength metal (such as steel wire or steel strip) as reinforcement and thermoplastic plastic (such as high-density polyethylene, HDPE) as matrix through a special process.

[0003] Existing metal spiral reinforced composite pipe joints use thermofusion joints, and conventional joints employ a single-layer structure design, resulting in relatively poor sealing in certain parts of the joint. Therefore, designing a metal spiral reinforced composite pipe joint to solve the above-mentioned technical problems is of particular importance. Utility Model Content

[0004] The purpose of this invention is to solve the problem that existing metal spiral reinforced composite pipe joints use heat fusion joints, and conventional joints adopt a single-layer structure design, resulting in relatively poor sealing of local structures. Therefore, this invention proposes a metal spiral reinforced composite pipe joint.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a connector for a metal-wound reinforced composite pipe, comprising a pipe body, wherein the pipe body is a metal-wound reinforced composite material, a connector is movably connected to the right end of the pipe body, the contact position between the pipe body and the connector is welded, the connector adopts a multi-layer structure, the inner layer of the connector is a sealing inner tube, the outer layer of the connector is an outer sealing tube, and the middle part of the outer sealing tube adopts a corrugated pipe design.

[0006] Preferably, a flange is installed at the right end of the joint, and a positioning block is provided on the flange. The positioning blocks are distributed in multiple groups on the flange, and the bellows is made of an elastically deformable material.

[0007] Preferably, adjacent flanges are connected by bolt threads, and the positioning block is connected to the bolt threads.

[0008] Preferably, the outer sealing tube is provided with an auxiliary groove, which fits into the tube body.

[0009] Preferably, a sealing ring is also fixedly connected to the end face of the flange.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0011] 1. In this utility model, during use, the sealing layer is compressed by mechanical fastening force to form a third pressure seal; the inner and outer layer structures, combined with the flange structure, form a triple sealing protection barrier. Simultaneously, a sealing ring structure is provided on the end face of the flange, forming a relatively sealed protection at the flange location, effectively avoiding leakage problems caused by structural defects in traditional single-layer joints. The multi-layer structural design not only enhances the overall strength of the joint but also ensures the long-term stability and reliability of the composite pipe connection through different sealing mechanisms. Especially in the bellows section, its elastic deformation characteristics allow the joint to adapt to a certain degree of installation error and pipe deformation, further improving the joint's adaptability and durability. Furthermore, the positioning block and bolt thread connection design on the flange simplify the installation process, improve installation efficiency, and also provide convenience for joint maintenance and replacement.

[0012] 2. In this invention, the precise fit between the auxiliary groove and the pipe body ensures stable positioning of the pipe body within the joint, effectively preventing sealing failure caused by pipe body movement. Simultaneously, the sealing ring fixedly connected to the flange end face forms a tight sealing surface during flange connection, further blocking the path of media leakage. This structural combination not only improves the sealing performance of the joint but also simplifies the pipe body installation process through the guiding effect of the auxiliary groove, making the entire connection process more efficient and reliable. In practical applications, this design significantly reduces the maintenance frequency caused by poor joint sealing, improving the overall operating efficiency of the pipeline system. Attached Figure Description

[0013] Figure 1 This is a schematic diagram showing the connection state of two sets of composite pipes for the metal-wound reinforced composite pipe connector of this utility model;

[0014] Figure 2 This is a schematic diagram of the joint structure for the metal-wound reinforced composite pipe of this utility model;

[0015] Figure 3 This is a top view of a partial structure of the flange in the metal-wound reinforced composite pipe joint of this utility model.

[0016] Legend: 1. Pipe body; 2. Connector; 201. Sealing inner pipe; 202. Outer sealing pipe; 203. Bellows; 204. Auxiliary groove; 3. Flange; 301. Positioning block; 302. Bolt; 4. Sealing ring. Detailed Implementation

[0017] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0019] This utility model provides a connector for a metal-wound reinforced composite pipe, including a pipe body 1, which is made of metal-wound reinforced composite material. A connector 2 is movably connected to the right end of the pipe body 1. The contact area between the pipe body 1 and the connector 2 is welded. The connector 2 has a multi-layer structure, with an inner sealing pipe 201 and an outer sealing pipe 202. The middle portion of the outer sealing pipe 202 is designed as a corrugated pipe 203. A flange 3 is installed at the right end of the connector 2, and a positioning device is provided on the flange 3. Positioning blocks 301 are distributed in multiple groups on the flange 3, and adjacent flanges 3 are connected by bolts 302. The positioning blocks 301 are threadedly connected to the bolts 302. The bellows 203 is made of a deformable material. During use, because the joint 2 adopts a multi-layer structure, with an inner sealing pipe 201 and an outer sealing pipe 202, and the middle part of the outer sealing pipe 202 is designed with a bellows 203, this multi-layer structure with a flexible bellows 203 greatly enhances the sealing performance of the joint 2. The deformable material of the bellows 203 can maintain a tight fit with the pipe body 1 even when the pipe body 1 is subjected to external force and undergoes a certain deformation, preventing leakage problems and effectively solving the problem of relatively poor local sealing performance caused by the single-layer structure design of conventional joint 2. Meanwhile, the positioning block 301 set on the flange 3 and the way adjacent flanges 3 are connected by bolts 302 not only facilitates installation and disassembly, but also further ensures the stability and sealing of the connection. In addition, the sealing ring 4 fixedly connected on the end face of the flange 3 also plays a role in strengthening the seal, thus ensuring the reliability and sealing of the metal spiral reinforced composite pipe connection from multiple aspects.

[0020] In practical use, the connector 2 for metal spiral reinforced composite pipes adopts a multi-layer structure design, consisting of an inner sealing pipe 201 and an outer sealing pipe 202. Firstly, an auxiliary groove 204 structure is provided in the outer sealing pipe 202, and the pipe body 1 of the composite pipe is placed in the auxiliary groove 204. After the pipe body 1 is installed in the connector 2, welding is performed at the abutment position between the connector 2 and the pipe body 1. The inner sealing pipe structure forms the first physical barrier at the connector 2 position. Simultaneously, a corrugated pipe 203 section is provided in the outer sealing pipe 202. Partially, material deformation compensates for installation errors, forming a second adaptive seal. Then, a flange 3 structure is installed at the end face of joint 2. The flange and connecting bolts 302 mate, and mechanical tightening compresses the sealing layer, forming a third pressure seal. The inner and outer layers, combined with the flange 3 structure, form a triple-seal protective barrier. A sealing ring 4 structure is also installed on the end face of flange 3, creating a relatively sealed protection at the flange 3 location, effectively avoiding leakage problems caused by structural defects in traditional single-layer joint 2. This multi-layer structural design not only enhances the overall strength of joint 2 but also ensures the long-term stability and reliability of the composite pipe connection through different sealing mechanisms. Especially in the corrugated pipe 203 section, its elastic deformation characteristic allows joint 2 to adapt to a certain degree of installation error and pipe deformation, further improving the adaptability and durability of joint 2. Furthermore, the positioning block 301 and the threaded connection design of bolts 302 on flange 3 simplify the installation process, improve installation efficiency, and also facilitate the maintenance and replacement of joint 2.

[0021] Example 1

[0022] like Figure 1-3 As shown, an auxiliary groove 204 is provided in the outer sealing pipe 202, the auxiliary groove 204 fits into the pipe body 1, and a sealing ring 4 is also fixedly connected to the end face of the flange 3.

[0023] The overall effect of Embodiment 1 is that, during use, the precise fit between the auxiliary groove 204 and the pipe body 1 ensures the stable positioning of the pipe body 1 within the joint 2, effectively preventing sealing failure caused by pipe body 1 shaking. Simultaneously, the sealing ring 4 fixedly connected to the end face of the flange 3 forms a tight sealing surface during flange connection, further blocking the path of media leakage. This structural combination not only improves the sealing performance of the joint 2 but also simplifies the installation process of the pipe body 1 through the guiding effect of the auxiliary groove 204, making the entire connection process more efficient and reliable. In practical applications, this design significantly reduces the maintenance frequency caused by poor sealing of the joint 2, improving the overall operating efficiency of the pipeline system.

[0024] Working Principle: The joint adopts a multi-layer structure design, consisting of an inner sealing tube and an outer sealing tube. First, an auxiliary groove structure is set in the outer sealing tube, and the composite pipe body structure is placed in the auxiliary groove. After the pipe body is installed in the joint, welding is performed at the abutment position between the joint and the pipe body. The inner sealing tube structure forms the first physical barrier at the joint position. At the same time, a bellows section is set in the outer sealing tube. The bellows section compensates for installation errors through material deformation, forming a second self-adaptive seal. Then, a flange structure is installed at the end face of the joint. The flange and connecting bolts are matched, and the sealing layer is compressed by mechanical tightening force to form a third pressure seal. The inner and outer layers, together with the flange structure, form a three-layer sealing protection barrier. At the same time, a sealing ring structure is set on the end face of the flange to form a relatively sealed protection at the flange position, effectively avoiding the leakage problem caused by structural defects of traditional single-layer joints.

Claims

1. A metal-wound reinforced composite pipe joint, comprising a pipe body (1), wherein the pipe body (1) is a metal-wound reinforced composite material, characterized in that, The right end of the pipe body (1) is movably connected to a connector (2). The pipe body (1) and the connector (2) are welded at the contact point. The connector (2) is set with a multi-layer structure. The inner layer of the connector (2) is a sealed inner tube (201), and the outer layer of the connector (2) is an outer sealing tube (202). The middle part of the outer sealing tube (202) is designed with a corrugated tube (203).

2. The metal-wound reinforced composite pipe joint according to claim 1, characterized in that, A flange (3) is installed on the right end of the connector (2), and a positioning block (301) is provided on the flange (3). The positioning blocks (301) are distributed in multiple groups on the flange (3). The bellows (203) is made of a material that can be elastically deformed.

3. The metal-wound reinforced composite pipe joint according to claim 2, characterized in that, The adjacent flanges (3) are connected by bolts (302) threaded connection, and the positioning block (301) is connected to the bolts (302) threaded connection.

4. The metal-wound reinforced composite pipe joint according to claim 1, characterized in that, An auxiliary groove (204) is provided in the outer sealing tube (202), and the auxiliary groove (204) fits into the tube body (1).

5. The metal-wound reinforced composite pipe joint according to claim 2, characterized in that, A sealing ring (4) is also fixedly connected to the end face of the flange (3).

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