High-strength hot pushing elbow for hydrogen conveying pipeline

Abstract

The utility model relates to the technical field of hydrogen conveying pipeline connection, in particular to a high-strength hot pushing elbow for a hydrogen conveying pipeline, which comprises an elbow body and a sealing component, the sealing component comprises a heat insulation plate, a lug ring, a fixed ring, a movable ring, a first sealing ring, a second sealing ring, a limit ring and a fastening bolt, and the limit ring is fixedly connected with the movable ring. The second sealing ring is fixedly connected with the limiting ring, the limiting ring, the second sealing ring and the lug ring are each provided with a threaded hole, the threaded holes are in threaded fit with the fastening bolt, the fixed ring penetrates through the hydrogen conveying pipeline, the first sealing ring makes contact with the hydrogen conveying pipeline, then the hydrogen conveying pipeline and the elbow body are welded, the movable ring slides, and the hydrogen conveying pipeline is sealed. The second sealing ring abuts against the lug ring, then the fastening bolt is tightened, the connecting position of the elbow body and the hydrogen conveying pipeline is sealed in this way, the welding stability and sealing performance are effectively guaranteed, and the conveying safety of the hydrogen conveying pipeline is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen pipeline connection, in particular to a high-strength hot-pushing elbow for a hydrogen pipeline. Background Art

[0002] Hydrogen pipeline is a pipeline system used to transport hydrogen. This pipeline system is mainly used to transport hydrogen from production plants or hydrogen storage facilities to the use site to support the development of hydrogen energy. Hydrogen pipelines can be divided into long-distance transmission pipelines and short-distance distribution pipelines. Hot push elbows are push-formed elbows. Push-forming elbows are the most important elbow forming production process. Push-formed elbows are also push-formed elbows. The production speed is fast, and the quality of push-formed elbows is good. The forming process of push-formed elbows is the most important forming production process for elbows. The material, wall thickness and outer diameter of the push-formed blank, the material and shape of the mandrel head, the heating temperature and its distribution, and the pushing speed. The elbow body and the pipeline are generally fixed by welding. At this time, the pipeline needs to be preheated first, and cold treatment is performed after welding is completed.

[0003] After the existing elbow body is welded, due to the principle of thermal expansion and contraction, gaps are likely to appear and it is inconvenient for workers to observe, thereby reducing the transportation safety of the hydrogen pipeline. Utility Model Content

[0004] The utility model aims to provide a high-strength hot-pushed elbow for a hydrogen pipeline, aiming to solve the problem that after the existing elbow body is welded, due to the principle of thermal expansion and contraction, gaps are easily formed and it is inconvenient for workers to observe, thereby reducing the safety of hydrogen pipeline transportation.

[0005] To achieve the above-mentioned purpose, the utility model provides a high-strength hot-pushing elbow for a hydrogen transmission pipeline, comprising an elbow body and a sealing assembly, wherein the sealing assembly comprises a heat insulation plate, an earring, a fixed ring, a movable ring, a first sealing ring, a second sealing ring, a limit ring and a fastening bolt, wherein the sealing assembly is arranged at one end of the elbow body, the heat insulation plate is fixedly connected to the elbow body and is located on the outer side wall of the elbow body, the earring is fixedly connected to the heat insulation plate and is located on the outer side wall of the heat insulation plate, the movable ring is slidably connected to the earring and is located at the The outer wall of the earring, the fixed ring is fixedly connected to the movable ring and is located at one end of the movable ring, the first sealing ring is fixedly connected to the fixed ring and is located on the inner wall of the fixed ring, the limiting ring is fixedly connected to the movable ring and is located on the inner wall of the movable ring, the second sealing ring is fixedly connected to the limiting ring and is located on one side of the limiting ring, and the second sealing ring is in contact with the movable ring, the limiting ring, the second sealing ring and the earring respectively have threaded holes, and the threaded holes are threadedly matched with the fastening bolts.

[0006] Wherein, the sealing assembly includes a gasket and a bolt cap, the gasket is detachably connected to the fastening bolt and is located on the outer side wall of the fastening bolt, and the gasket is in contact with the earring, and the bolt cap is detachably connected to the fastening bolt and is located at one end of the fastening bolt.

[0007] Wherein, the high-strength hot-pushing elbow for the hydrogen pipeline also includes a support component, and the support component is arranged below the moving ring.

[0008] Wherein, the supporting assembly includes a mounting plate, a threaded cylinder, a threaded rod, a base and a sanding pad, the mounting plate is fixedly connected to the movable ring and is located below the movable ring, the threaded cylinder is detachably connected to the mounting plate and is located below the mounting plate, the threaded rod is threadedly connected to the threaded cylinder and is located on the inner side wall of the threaded cylinder, the base is fixedly connected to the threaded rod and is located below the threaded rod, and the sanding pad is fixedly connected to the base and is located below the base.

[0009] Wherein, the high-strength hot-pushing elbow for the hydrogen pipeline also includes a connecting component, and the connecting component is arranged on the outer side wall of the elbow body.

[0010] Wherein, the connecting assembly includes a connecting plate and two fixed outer rings, the two fixed outer rings are fixedly connected to the elbow body and are respectively located on the outer side walls of the elbow body, and the connecting plate is fixedly connected to the two fixed outer rings and is located between the two fixed outer rings.

[0011] The utility model discloses a high-strength hot-pushing elbow for a hydrogen pipeline. The fixed ring is first passed through the hydrogen pipeline to make the first sealing ring contact the hydrogen pipeline, and then the hydrogen pipeline and the elbow body are welded. The movable ring is slid to make the second sealing ring abut against the earring, and then the fastening bolt is tightened to make the movable ring in a sealed state. In this way, the connection between the elbow body and the hydrogen pipeline is sealed, which effectively ensures the stability and sealing of the welding and improves the transportation safety of the hydrogen pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0013] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model.

[0014] Figure 2 It is an overall right side view of the first embodiment of the utility model.

[0015] Figure 3 The utility model Figure 2 AA line section view.

[0016] Figure 4 The utility model Figure 3 Enlarged view of the local structure at point B.

[0017] Figure 5 It is an overall structural diagram of the second embodiment of the utility model.

[0018] 101-elbow body, 102-sealing assembly, 103-support assembly, 104-heat insulation board, 105-earring, 106-fixed ring, 107-movable ring, 108-first sealing ring, 109-second sealing ring, 110-limiting ring, 111-fastening bolt, 112-gasket, 113-bolt cap, 114-mounting plate, 115-threaded cylinder, 116-threaded rod, 117-base, 118-grinding pad, 119-threaded hole, 201-connecting assembly, 202-connecting plate, 203-fixed outer ring. DETAILED DESCRIPTION

[0019] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0020] First embodiment:

[0021] See also Figures 1 to 4 ,in, Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model. Figure 2 It is the overall right side view of the first embodiment of the utility model. Figure 3 The utility model Figure 2 AA line section view, Figure 4 The utility model Figure 3 Enlarged view of the local structure at point B.

[0022] The utility model provides a high-strength hot-pushing elbow for a hydrogen transmission pipeline, comprising an elbow body 101, a sealing assembly 102 and a supporting assembly 103, wherein the sealing assembly 102 comprises a heat insulation plate 104, an earring 105, a fixing ring 106, a moving ring 107, a first sealing ring 108, a second sealing ring 109, a limiting ring 110, a fastening bolt 111, a gasket 112 and a bolt cap 113, and the supporting assembly 103 comprises a mounting plate 114, a threaded barrel 115, a threaded rod 116, a base 117 and a frosted pad 118, and the limiting ring 110, the second sealing ring 109 and the earring 105 respectively have a threaded hole 119.

[0023] According to this specific embodiment, the sealing component 102 is disposed at one end of the elbow body 101. The sealing component 102 is added to seal the connection between the elbow body 101 and the hydrogen pipeline, effectively ensuring the stability of welding and improving the transportation safety of the hydrogen pipeline.

[0024] Among them, the heat insulation plate 104 is fixedly connected to the elbow body 101 and is located on the outer side wall of the elbow body 101, the earring 105 is fixedly connected to the heat insulation plate 104 and is located on the outer side wall of the heat insulation plate 104, the movable ring 107 is slidably connected to the earring 105 and is located on the outer side wall of the earring 105, the fixed ring 106 is fixedly connected to the movable ring 107 and is located at one end of the movable ring 107, the first sealing ring 108 is fixedly connected to the fixed ring 106 and is located on the inner side wall of the fixed ring 106, the limiting ring 110 is fixedly connected to the movable ring 107 and is located on the inner side wall of the movable ring 107, and the second sealing ring 109 is fixedly connected to the limiting ring 110 and is located on the One side, and the second sealing ring 109 is in contact with the movable ring 107, the limiting ring 110, the second sealing ring 109 and the earring 105 respectively have a threaded hole 119, and the threaded hole 119 is threadedly matched with the fastening bolt 111. First, the fixed ring 106 is passed through the hydrogen pipeline to make the first sealing ring 108 contact the hydrogen pipeline, and then the hydrogen pipeline is welded to the elbow body 101, and the movable ring 107 is slid to make the second sealing ring 109 abut against the earring 105, and then the fastening bolt 111 is tightened to make the movable ring 107 in a sealed state. In this way, the connection between the elbow body 101 and the hydrogen pipeline is sealed, which effectively ensures the stability and sealing of the welding and improves the transportation safety of the hydrogen pipeline.

[0025] Secondly, the gasket 112 is detachably connected to the fastening bolt 111 and is located on the outer side wall of the fastening bolt 111, and the gasket 112 is in contact with the earring 105. The bolt cap 113 is detachably connected to the fastening bolt 111 and is located at one end of the fastening bolt 111. The gasket 112 can increase the contact area between the fastening bolt 111 and the earring 105 to avoid back-off and loosening, and the bolt cap 113 can protect the fastening bolt 111 and reduce the occurrence of corrosion.

[0026] At the same time, the support assembly 103 is arranged below the moving ring 107 . The support assembly 103 is added to support the moving ring 107 , reduce the connection pressure between the elbow body 101 and the hydrogen transmission pipeline, and extend the service life of the elbow body 101 .

[0027] In addition, the mounting plate 114 is fixedly connected to the movable ring 107 and is located below the movable ring 107, the threaded barrel 115 is detachably connected to the mounting plate 114 and is located below the mounting plate 114, the threaded rod 116 is threadedly connected to the threaded barrel 115 and is located on the inner side wall of the threaded barrel 115, the base 117 is fixedly connected to the threaded rod 116 and is located below the threaded rod 116, the sanding pad 118 is fixedly connected to the base 117 and is located below the base 117, the threaded barrel 115 is installed under the mounting plate 114, the base 117 is rotated to make the threaded rod 116 rotate in the threaded barrel 115 until the sanding pad 118 contacts the ground, and the movable ring 107 is supported in this way, the connection pressure between the elbow body 101 and the hydrogen transmission pipeline is reduced, and the service life of the elbow body 101 is extended.

[0028] When using the high-strength hot-pushing elbow for hydrogen pipeline of the utility model, first pass the fixed ring 106 through the hydrogen pipeline to make the first sealing ring 108 contact the hydrogen pipeline, then weld the hydrogen pipeline to the elbow body 101, slide the movable ring 107, make the second sealing ring 109 abut against the earring 105, and then tighten the fastening bolt 111 to make the movable ring 107 in a sealed state. The gasket 112 can increase the contact area between the fastening bolt 111 and the earring 105 to avoid the situation of backing off and loosening, and the bolt cap 113 can protect the The fastening bolt 111 is used to reduce the occurrence of corrosion, the threaded barrel 115 is installed under the mounting plate 114, and the base 117 is rotated to make the threaded rod 116 rotate in the threaded barrel 115 until the frosting pad 118 contacts the ground. In this way, the movable ring 107 is supported to reduce the connection pressure between the elbow body 101 and the hydrogen pipeline, and the service life of the elbow body 101 is extended. In this way, the connection between the elbow body 101 and the hydrogen pipeline is sealed, which effectively ensures the stability and sealing of the welding and improves the transportation safety of the hydrogen pipeline.

[0029] Second embodiment:

[0030] Based on the first embodiment, please refer to Figure 5 , Figure 5 It is an overall structural diagram of the second embodiment of the utility model.

[0031] The utility model provides a high-strength hot-pushing elbow for a hydrogen transmission pipeline, which also includes a connecting assembly 201 . The connecting assembly 201 includes a connecting plate 202 and two fixed outer rings 203 .

[0032] According to this specific embodiment, the connecting component 201 is arranged on the outer wall of the elbow body 101. The connecting component 201 is added to improve the connection strength of the elbow body 101, avoid cracks when gas collides with the elbow body 101, and reduce subsequent maintenance costs.

[0033] Among them, the two fixed outer rings 203 are fixedly connected to the elbow body 101 and are respectively located on the outer side walls of the elbow body 101. The connecting plate 202 is fixedly connected to the two fixed outer rings 203 and is located between the two fixed outer rings 203. With the cooperation of the fixed outer rings 203 and the connecting plate 202, the connection strength of the elbow body 101 is improved, cracks are avoided when gas collides with the elbow body 101, and the subsequent maintenance costs are reduced.

[0034] When using a high-strength hot-pushed elbow for a hydrogen pipeline of the utility model, the cooperation between the fixed outer ring 203 and the connecting plate 202 improves the connection strength of the elbow body 101, avoids cracks when gas collides with the elbow body 101, and reduces subsequent maintenance costs.

[0035] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A high-strength hot-pushing elbow for a hydrogen pipeline, characterized in that: It comprises an elbow body and a sealing assembly, wherein the sealing assembly is arranged at one end of the elbow body; The sealing assembly includes a heat insulation plate, an earring, a fixed ring, a movable ring, a first sealing ring, a second sealing ring, a limiting ring and a fastening bolt. The heat insulation plate is fixedly connected to the elbow body and is located on the outer side wall of the elbow body. The earring is fixedly connected to the heat insulation plate and is located on the outer side wall of the heat insulation plate. The movable ring is slidably connected to the earring and is located on the outer side wall of the earring. The fixed ring is fixedly connected to the movable ring and is located at one end of the movable ring. The first sealing ring is fixedly connected to the fixed ring and is located on the inner side wall of the fixed ring. The limiting ring is fixedly connected to the movable ring and is located on the inner side wall of the movable ring. The second sealing ring is fixedly connected to the limiting ring and is located on one side of the limiting ring, and the second sealing ring contacts the movable ring. The limiting ring, the second sealing ring and the earring respectively have threaded holes, and the threaded holes are threadedly matched with the fastening bolts.

2. The high-strength hot-pushing elbow for hydrogen pipeline according to claim 1, characterized in that: The sealing assembly includes a gasket and a bolt cap, wherein the gasket is detachably connected to the fastening bolt and is located on the outer side wall of the fastening bolt, and the gasket contacts the earring, and the bolt cap is detachably connected to the fastening bolt and is located at one end of the fastening bolt.

3. The high-strength hot-pushing elbow for hydrogen pipeline according to claim 2, characterized in that: The high-strength hot-pushing elbow for the hydrogen pipeline also includes a support component, and the support component is arranged below the moving ring.

4. The high-strength hot-pushing elbow for hydrogen pipeline according to claim 3, characterized in that: The supporting assembly includes a mounting plate, a threaded cylinder, a threaded rod, a base and a sanding pad. The mounting plate is fixedly connected to the movable ring and is located below the movable ring. The threaded cylinder is detachably connected to the mounting plate and is located below the mounting plate. The threaded rod is threadably connected to the threaded cylinder and is located on the inner side wall of the threaded cylinder. The base is fixedly connected to the threaded rod and is located below the threaded rod. The sanding pad is fixedly connected to the base and is located below the base.

5. The high-strength hot-pushing elbow for hydrogen pipeline according to claim 4, characterized in that: The high-strength hot-pushing elbow for the hydrogen pipeline also includes a connecting component, and the connecting component is arranged on the outer side wall of the elbow body.

6. The high-strength hot-pushing elbow for hydrogen pipeline according to claim 5, characterized in that: The connecting assembly includes a connecting plate and two fixed outer rings, the two fixed outer rings are fixedly connected to the elbow body and are respectively located on the outer side walls of the elbow body, and the connecting plate is fixedly connected to the two fixed outer rings and is located between the two fixed outer rings.

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