Basalt fiber composite material hydrogen conveying pipeline

Abstract

The utility model relates to the technical field of hydrogen conveying pipelines, in particular to a basalt fiber composite material hydrogen conveying pipeline which comprises an outer lining layer and an inner lining layer, a connecting mechanism is arranged on the outer wall of the outer lining layer and comprises a connecting piece, the inner wall of the connecting piece is fixedly connected with the outer lining layer, and the inner wall of the connecting piece is fixedly connected with the inner lining layer. The outer wall of the connecting piece is fixedly connected with the first connecting ring, and the inner wall of the first connecting ring is in threaded connection with the threaded rod. By adopting an integrated structure of the end part of the basalt fiber composite material hydrogen conveying pipeline and the connecting piece, an outer connecting pipe only needs to penetrate through a pull ring, the end part of the outer connecting pipe is clamped into a placing groove, a threaded rod is manually rotated to rotate on a first connecting ring, and the end part of the threaded rod pulls a second connecting ring and the pull ring to move towards the direction of the connecting piece; when the pull ring is installed, the connecting cylinder on the inner wall of the pull ring can enter the sealing ring on the connecting piece, so that the sealing ring achieves the sealing installation effect between the pull ring and the connecting piece, the installation time is greatly shortened, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen transmission pipelines, in particular to a basalt fiber composite material hydrogen transmission pipeline. Background Art

[0002] To help build a clean, low-carbon, safe and efficient energy system, hydrogen energy has become an important strategic choice to accelerate energy transformation and upgrading. Major developed countries in the world attach great importance to the development of the hydrogen energy industry. As the world's largest hydrogen producer, my country also has a good foundation for developing the hydrogen energy industry. Hydrogen pipeline transportation is a reasonable choice for large-scale continuous hydrogen transmission, and its technical feasibility and economic benefits have been verified in applications in European countries.

[0003] For example, a basalt fiber composite hydrogen pipeline with the authorization announcement number "CN220286661U" has solved the problem of existing basalt fiber composite hydrogen pipelines. The most important failure mode of metal hydrogen embrittlement is hydrogen-induced cracking. The above-mentioned basalt fiber composite reinforcement layer is formed by winding basalt fibers. Basalt fibers have the characteristics of high strength and good corrosion resistance. They have strong resistance to hydrogen embrittlement and can effectively avoid pitting and stress corrosion of hydrogen atoms on hydrogen pipelines during hydrogen transmission, which causes cracking of hydrogen pipelines. The service life of hydrogen pipelines is greatly improved. Considering the existing basalt fiber composite hydrogen pipelines, external connectors are needed for splicing during connection and splicing, which increases the installation time and reduces work efficiency. Utility Model Content

[0004] The utility model aims to solve the problem that the existing basalt fiber composite hydrogen pipeline needs to be spliced ​​with external connectors, which increases the installation time and reduces the work efficiency, and proposes a basalt fiber composite hydrogen pipeline.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a basalt fiber composite hydrogen transmission pipeline, comprising an outer lining layer and an inner lining layer, the outer wall of the outer lining layer is provided with a connecting mechanism, the connecting mechanism comprises a connecting piece, the inner wall of the connecting piece is fixedly connected to the outer lining layer, the outer wall of the connecting piece is fixedly connected to a first connecting ring, the inner wall of the first connecting ring is threadedly connected to a threaded rod, the end of the threaded rod is rotatably connected to a second connecting ring, the inner wall of the second connecting ring is threadedly connected to a pull ring, and the inner wall of the pull ring is provided with a placement groove.

[0006] Preferably, the inner wall of the outer lining is provided with a pressure-resistant mechanism, which includes a pressure-resistant layer, the outer wall of the pressure-resistant layer is fixedly connected to the outer lining, the inner wall of the pressure-resistant layer is in contact with the basalt fiber composite layer, the inner wall of the basalt fiber composite layer is fixedly connected to the transverse reinforcement ribs, the inner wall of the transverse reinforcement ribs is fixedly connected to the longitudinal reinforcement ribs, and the outer wall of the longitudinal reinforcement ribs is fixedly connected to the basalt fiber composite layer.

[0007] Preferably, the outer wall of the pull ring is fixedly connected to the connecting tube, and the end of the connecting tube is tightly abutted against the connecting piece.

[0008] Preferably, the outer wall of the inner lining layer is fixedly connected to the wear-resistant layer, the outer wall of the wear-resistant layer is fixedly connected to the longitudinal reinforcing ribs, and the outer wall of the wear-resistant layer is fixedly connected to the transverse reinforcing ribs.

[0009] Preferably, the inner wall of the connecting piece is fixedly connected to the sealing ring.

[0010] Preferably, the outer wall of the sealing ring fits with the connecting tube.

[0011] The utility model proposes a basalt fiber composite hydrogen pipeline, which has the beneficial effect that: by adopting a structure in which the end of the basalt fiber composite hydrogen pipeline is integrated with the connecting piece, it is only necessary to pass the external connecting pipe through the inside of the pull ring, and the end of the external connecting pipe is inserted into the inside of the placement groove, and the threaded rod is manually rotated on the first connecting ring, and the end of the threaded rod pulls the second connecting ring and the pull ring to move toward the connecting piece, and the connecting tube on the inner wall of the pull ring will enter the sealing ring on the connecting piece, so that the sealing ring can achieve a sealing installation effect between the pull ring and the connecting piece, which greatly shortens the installation time and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure in the middle front view;

[0014] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure in the middle side view;

[0015] Figure 4 for Figure 2 The enlarged structural diagram at A in the middle;

[0016] Figure 5 for Figure 2 The enlarged structural diagram at B in the middle;

[0017] Figure 6 for Figure 3 Enlarged structural diagram at point C in the middle.

[0018] In the figure: 1. outer lining layer, 2. inner lining layer, 3. connecting mechanism, 301. connecting piece, 302. first connecting ring, 303. threaded rod, 304. second connecting ring, 305. pull ring, 306. placement groove, 4. pressure-resistant mechanism, 401. pressure-resistant layer, 402. basalt fiber composite layer, 403. transverse reinforcement ribs, 404. longitudinal reinforcement ribs, 5. connecting tube, 6. wear-resistant layer, 7. sealing ring. DETAILED DESCRIPTION

[0019] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0020] See also Figure 1-6 The utility model provides a technical solution: a basalt fiber composite hydrogen pipeline, including an outer lining layer 1 and an inner lining layer 2. The outer lining layer 1 is formed by extrusion, and the first surface anti-corrosion layer is formed by anti-corrosion resin, which has excellent corrosion resistance and greatly improves the corrosion resistance of the hydrogen pipeline; the second surface layer is formed by winding glass fiber and structural resin, which has excellent strength and further protects the hydrogen pipeline. The inner lining layer 2 is composed of the first surface layer and the second surface layer. The first surface layer is preferably formed by extrusion of PE material, with a smooth surface, no holes, and a small friction coefficient. The PE material has good chemical stability and strong corrosion resistance; the second surface layer is preferably formed by extrusion of PA material, which has good wear resistance and corrosion resistance.

[0021] The outer wall of the outer lining 1 is provided with a connecting mechanism 3, and the distance between the first connecting ring 302 on the connecting piece 301 and the second connecting ring 304 on the pull ring 305 is adjusted to achieve the effect of connecting the inside of the connecting piece 301 and the pull ring 305. The connecting mechanism 3 includes a connecting piece 301, the inner wall of the connecting piece 301 is fixedly connected to the outer lining 1, the outer wall of the connecting piece 301 is fixedly connected to the first connecting ring 302, the inner wall of the first connecting ring 302 is threadedly connected to the threaded rod 303, the end of the threaded rod 303 is rotatably connected to the second connecting ring 304, the inner wall of the second connecting ring 304 is threadedly connected to the pull ring 305, and the inner wall of the pull ring 305 is installed with a placement groove 306;

[0022] The structure in which the end of the basalt fiber composite material hydrogen transmission pipeline is integrated with the connecting piece 301 is adopted. It is only necessary to pass the external connecting pipe through the inside of the pull ring 305, and the end of the external connecting pipe is inserted into the inside of the placement groove 306. The threaded rod 303 is manually rotated on the first connecting ring 302. The end of the threaded rod 303 pulls the second connecting ring 304 and the pull ring 305 toward the connecting piece 301. The connecting tube 5 on the inner wall of the pull ring 305 will enter the sealing ring 7 on the connecting piece 301, so that the sealing ring 7 can achieve a sealing installation effect between the pull ring 305 and the connecting piece 301, which greatly shortens the installation time and improves work efficiency.

[0023] See also Figure 1 , Figure 2 and Figure 3 The inner wall of the outer lining 1 is provided with a compression-resistant mechanism 4, which is spliced ​​into a mesh by transverse reinforcement ribs 403 and longitudinal reinforcement ribs 404 to achieve the effect of external support and compression resistance. The compression-resistant mechanism 4 includes a compression-resistant layer 401, the outer wall of the compression-resistant layer 401 is fixedly connected to the outer lining 1, the compression-resistant layer 401 uses high-density polyethylene, has good flexibility and high impact strength, the inner wall of the compression-resistant layer 401 is in contact with the basalt fiber composite layer 402, the inner wall of the basalt fiber composite layer 402 is fixedly connected to the transverse reinforcement rib 403, the inner wall of the transverse reinforcement rib 403 is fixedly connected to the longitudinal reinforcement rib 404, and the outer wall of the longitudinal reinforcement rib 404 is fixedly connected to the basalt fiber composite layer 402.

[0024] See also Figure 1 and Figure 2 The outer wall of the pull ring 305 is fixedly connected to the connecting tube 5, the end of the connecting tube 5 is tightly pressed against the connecting piece 301, the outer wall of the inner lining layer 2 is fixedly connected to the wear-resistant layer 6, the outer wall of the wear-resistant layer 6 is fixedly connected to the longitudinal reinforcing rib 404, the outer wall of the wear-resistant layer 6 is fixedly connected to the transverse reinforcing rib 403, the inner wall of the connecting piece 301 is fixedly connected to the sealing ring 7, the sealing ring 7 is made of rubber material, and mainly seals the gap between the connections, and the outer wall of the sealing ring 7 fits with the connecting tube 5.

[0025] Working principle:

[0026] (I) Installation phase

[0027] By passing the external connecting tube through the interior of the pull ring 305 and inserting the end of the external connecting tube into the interior of the placement groove 306, the pull ring 305 is threaded into the second connecting ring 304, and the threaded rod 303 is manually rotated on the first connecting ring 302, so that the end of the threaded rod 303 pulls the second connecting ring 304 and the pull ring 305 to move toward the connecting piece 301. At the same time, the connecting tube 5 on the inner wall of the pull ring 305 will enter the sealing ring 7 on the connecting piece 301, so that the sealing ring 7 can achieve a sealing effect between the pull ring 305 and the connecting piece 301, ensuring the sealing and firmness of the connection between the external connecting tube and the inner lining layer 2.

[0028] (II) Anti-pressure effect

[0029] The inner part of the outer lining 1 is made of high-density polyethylene with a pressure-resistant layer 401, which has good flexibility and high impact strength. At the same time, a basalt fiber composite layer 402 is arranged inside. The basalt fiber composite material reinforcement layer will be formed by winding basalt fibers. Basalt fibers have the characteristics of high strength and good corrosion resistance. They have strong resistance to hydrogen embrittlement and can effectively avoid pitting and stress corrosion of hydrogen atoms on the hydrogen pipeline during the hydrogen transmission process, which may cause cracking of the hydrogen pipeline. In addition, the inner wall of the inner wall basalt fiber composite layer 402 is spliced ​​into a mesh-like pressure-resistant structure by transverse reinforcement ribs 403 and longitudinal reinforcement ribs 404, which greatly forms a support force for external pressure, avoids arbitrary deformation caused by external forces during use, and will not affect the use effect.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A basalt fiber composite hydrogen pipeline, comprising an outer lining layer (1) and an inner lining layer (2), characterized in that: The outer wall of the outer lining (1) is provided with a connecting mechanism (3), and the connecting mechanism (3) comprises a connecting piece (301), the inner wall of the connecting piece (301) is fixedly connected to the outer lining (1), the outer wall of the connecting piece (301) is fixedly connected to a first connecting ring (302), the inner wall of the first connecting ring (302) is threadedly connected to a threaded rod (303), the end of the threaded rod (303) is rotatably connected to a second connecting ring (304), the inner wall of the second connecting ring (304) is threadedly connected to a pull ring (305), and the inner wall of the pull ring (305) is provided with a placement groove (306).

2. The basalt fiber composite hydrogen pipeline according to claim 1, characterized in that: The inner wall of the outer lining (1) is provided with a pressure-resistant mechanism (4), and the pressure-resistant mechanism (4) comprises a pressure-resistant layer (401), the outer wall of the pressure-resistant layer (401) is fixedly connected to the outer lining (1), the inner wall of the pressure-resistant layer (401) is in contact with the basalt fiber composite layer (402), the inner wall of the basalt fiber composite layer (402) is fixedly connected to the transverse reinforcement rib (403), the inner wall of the transverse reinforcement rib (403) is fixedly connected to the longitudinal reinforcement rib (404), and the outer wall of the longitudinal reinforcement rib (404) is fixedly connected to the basalt fiber composite layer (402).

3. The basalt fiber composite hydrogen pipeline according to claim 1, characterized in that: The outer wall of the pull ring (305) is fixedly connected to the connecting tube (5), and the end of the connecting tube (5) is tightly abutted against the connecting piece (301).

4. The basalt fiber composite hydrogen pipeline according to claim 1, characterized in that: The outer wall of the inner lining layer (2) is fixedly connected to the wear-resistant layer (6), the outer wall of the wear-resistant layer (6) is fixedly connected to the longitudinal reinforcing ribs (404), and the outer wall of the wear-resistant layer (6) is fixedly connected to the transverse reinforcing ribs (403).

5. The basalt fiber composite hydrogen pipeline according to claim 1, characterized in that: The inner wall of the connecting piece (301) is fixedly connected to the sealing ring (7).

6. The basalt fiber composite hydrogen pipeline according to claim 5, characterized in that: The outer wall of the sealing ring (7) is in close contact with the connecting tube (5).

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