High-strength composite material hydrogen conveying pipeline flanging structure

Abstract

The utility model relates to the technical field of pipeline flanging, in particular to a high-strength composite material hydrogen conveying pipeline flanging structure which comprises a pipeline, a flanging structure body is arranged at the end of the pipeline, glass fibers are wound on the outer wall of the pipeline, the glass fibers are clamped between the flanging structure body and the pipeline, glass fibers are also wound on the outer wall of the flanging structure, and the glass fibers are clamped between the flanging structure body and the pipeline. According to the utility model, the glass fiber is radially wound at the end part of the hydrogen conveying pipeline twice, and the thermosetting resin is coated on the outer layer of the glass fiber after each winding, so that the strength of the pipe end is increased, and the tightness and firmness of the connection between the pipelines are further enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline flanging, in particular to a high-strength composite material hydrogen transmission pipeline flanging structure. Background Art

[0002] Hydrogen pipelines are mainly used to transport hydrogen in industrial production. Hydrogen has a small molecular weight, so hydrogen molecules can enter the crystal lattices of many metals, causing the "hydrogen embrittlement" phenomenon. Therefore, the storage and transportation of hydrogen needs to be made of high-strength composite materials. In order to meet the long-distance transportation of hydrogen, multiple hydrogen pipelines are usually connected, that is, the pipe ends are mostly connected with loose flanges. When producing the transmission pipeline, the pipe ends of the hydrogen pipelines need to be flanging. After the pipe ends are flanging using existing technology, the mesh at the pipe ends becomes loose, the mesh leaks irregularly, and its compressive strength is reduced.

[0003] Based on this, a flange structure suitable for high-strength composite hydrogen pipeline is studied. Utility Model Content

[0004] The utility model aims to solve the above problems and provides a high-strength composite material hydrogen transmission pipeline flanging structure.

[0005] The utility model is realized through the following technical scheme: a high-strength composite material hydrogen pipeline flanging structure, characterized in that it includes a pipeline, a flanging structure is provided at the end of the pipeline, glass fiber is wound on the outer wall of the pipeline, the glass fiber is sandwiched between the flanging structure and the pipeline, and glass fiber is also wound on the outer wall of the flanging structure.

[0006] Furthermore, the outer layer of each of the glass fibers is coated with a thermosetting resin coating.

[0007] Furthermore, the flanging structure process method has the following steps:

[0008] (1) Preheating: Place the end of the pipe under a heat source for preheating;

[0009] (2) Initial winding: After heating, the glass fiber is radially wound around the end of the pipe and coated with thermosetting resin material;

[0010] (3) Flanging: After the initial winding, the pipe end is flanged, and then the secondary winding is performed;

[0011] (4) Secondary winding: secondary winding of glass fiber is performed on the flanged end of the tube, and thermosetting resin material is coated at the same time;

[0012] (5) Molding.

[0013] The beneficial effect of the utility model is that the utility model radially winds the glass fiber twice on the end of the hydrogen transmission pipeline, and after each winding, a thermosetting resin is coated on the outer layer of the glass fiber to increase the strength of the pipe end, thereby further enhancing the tightness and firmness of the connection between the pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the process flow of the utility model;

[0016] In the attached drawings, 1 is a pipe, 2 is glass fiber, 3 is a flange structure, 4 is a thermosetting resin coating, and 5 is a woven mesh. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and beneficial effects of the present invention more clearly understood, the technical solution of the present invention is further described below in conjunction with embodiments.

[0018] like Figure 1 As shown, a high-strength composite material hydrogen pipeline flanging structure is characterized in that the pipeline is enclosed, a flanging structure is provided at the end of the pipeline, glass fiber is wound on the outer wall of the pipeline, and the glass fiber is sandwiched between the flanging structure and the pipeline, that is, the pipe end is flanging after the glass fiber is wound on the outer wall of the pipe end, and the pipe end is flanging, and glass fiber is also wound on the outer wall of the flanging structure, that is, after flanging, the glass fiber is wound again on the flanging structure of the pipe end, and its strength is increased by secondary winding.

[0019] In order to further improve the strength of the tube end flange, the outer layer of each glass fiber is coated with a thermosetting resin coating.

[0020] like Figure 2 As shown, the flanging structure process method steps are as follows:

[0021] (1) Preheating: First place the end of the pipe under a heat source for preheating;

[0022] (2) Initial winding: After heating, the glass fiber is radially wound around the end of the pipe and coated with thermosetting resin material;

[0023] (3) Flanging: After the initial winding, the pipe end is flanged, and then the secondary winding is performed;

[0024] (4) Secondary winding: secondary winding of glass fiber is performed on the flange of the tube end, and thermosetting resin material is coated at the same time;

[0025] (5) Molding.

[0026] The utility model winds glass fibers around the inner and outer surfaces of the PE pipe during the flanging forming process of the pipe end, and adds thermosetting resin material during the winding process to increase the strength of the PE pipe.

[0027] Except for the technical features described in the specification, the other technical features are known to those skilled in the art.

Claims

1. A high-strength composite material hydrogen pipeline flange structure, characterized in that: The invention comprises a pipe (1), wherein a flange structure (3) is provided at the end of the pipe (1), glass fibers (2) are wound around the outer wall of the pipe (1), the glass fibers (2) are sandwiched between the flange structure (3) and the pipe (1), and glass fibers (2) are also wound around the outer wall of the flange structure (3).

2. The high-strength composite material hydrogen pipeline flange structure according to claim 1, characterized in that: The outer layer of each of the glass fibers (2) is coated with a thermosetting resin coating (4).

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