KR-20260063691-A - Method For Constructing Hydrogen Pipeline

Abstract

The present invention provides a method for constructing a hydrogen pipeline network. In one embodiment, the method for constructing a hydrogen pipeline underground comprises: an excavation step of excavating the ground; a sheet pile installation step of installing sheet piles; a semi-shield placement step of introducing a semi-shield device into the excavated location; a pipeline installation step of placing and welding pipelines; an inspection step of performing an inspection; and a heat shrink sheet installation step of installing a heat shrink sheet on the welded portion of the pipeline. In the pipeline installation step, a plurality of L-Seam welded pipes are placed and then welded, wherein the welding is performed with the core of the L-Seam welded pipes positioned so as to face the sky.

Inventors

• 안병락
• 최환도

Assignees

• 주식회사 플랜텍

Dates

Publication Date

20260507

Application Date

20241031

Claims (4)

1. As a method of constructing hydrogen pipelines underground, Excavation stage for excavating the ground; Sheet file installation steps for installing the sheet file; Semi-shield deployment step for entering the excavated location with a semi-shield device; Pipe installation stage for laying and welding pipes; Inspection step for performing an inspection; and A heat shrink sheet installation step of installing a heat shrink sheet on the welded part of the piping; including, A method for constructing a hydrogen pipeline underground, wherein in the above-mentioned pipeline installation step, a plurality of L-Seam welded pipes are arranged and welding is performed, wherein the core of the L-Seam welded pipe is arranged so as to face the sky.
2. In Article 1, A method for constructing a hydrogen pipeline underground in which welding is performed while the core of the pipeline is arranged in an alternating manner with the core of an adjacent pipeline during the above pipeline installation step.
3. In Article 2, A method for constructing hydrogen pipelines underground in which the angle of deviation (A) of the cores of adjacent pipelines is in the range of 100 to 140°, and the cores of adjacent pipelines are arranged in a state where they are rotated by the same angle in opposite directions relative to each other with respect to the vertical direction.
4. In Paragraph 3, A method for constructing a hydrogen pipeline underground where the above-mentioned staggered angle is 120°.

Description

Method for Constructing Hydrogen Pipeline The present invention relates to a method for constructing a hydrogen pipeline. Due to carbon regulations, technologies utilizing hydrogen instead of oil, coal, and natural gas are gaining attention. To apply these hydrogen utilization technologies, hydrogen pipelines are required to transport hydrogen from production sites to consumption sites. Typically, pipelines buried underground have been water or natural gas pipes. However, while hydrogen gas requires more careful preparation and execution than natural gas pipelines, there is currently no established technology for installing pipeline networks using hydrogen, so a method for constructing hydrogen pipelines is required. Furthermore, given that hydrogen piping is exposed to hydrogen, management of hydrogen embrittlement is necessary, and there is a demand for piping installation methods that allow for management, particularly focusing on welded joints. FIG. 1 is a flowchart of a method for constructing a hydrogen pipeline according to the present invention. FIG. 2 is a schematic plan view of a welded pipe installed in a hydrogen pipe construction method according to the present invention. Figure 3 is a schematic diagram of the installation of Figure 2 viewed from one side. Preferred embodiments of the present invention will be described below with reference to the attached drawings. However, embodiments of the present invention may be modified in various other forms, and the scope of the present invention is not limited to the embodiments described below. In addition, embodiments of the present invention are provided to more fully explain the present invention to those with average knowledge in the relevant technical field. In drawings, the shapes and sizes of elements may be exaggerated for clearer explanation. In describing the embodiments of the present invention, if it is determined that a detailed description of known technology related to the present invention may unnecessarily obscure the essence of the present invention, such detailed description will be omitted. Furthermore, the terms described below are defined considering their functions in the present invention, and these may vary depending on the intentions or conventions of the user or operator. Therefore, such definitions should be based on the content throughout this specification. The terms used in the detailed description are merely for describing the embodiments of the present invention and should not be limited in any way. Unless explicitly stated otherwise, expressions in the singular form include the meaning of the plural form. In this description, expressions such as “include” or “equipped” are intended to refer to certain characteristics, numbers, steps, actions, elements, parts or combinations thereof, and should not be interpreted to exclude the existence or possibility of one or more other characteristics, numbers, steps, actions, elements, parts or combinations thereof other than those described. In this specification, terms such as 'top', 'upper', 'upper surface', 'lower', 'lower surface', 'lower surface', and 'side surface' are based on the drawings and may actually vary depending on the direction in which the elements or components are arranged. Additionally, throughout the specification, when it is said that one part is 'connected' to another part, this includes not only cases where they are 'directly connected,' but also cases where they are 'indirectly connected' with other elements in between. The present invention will be described in detail below through each embodiment or example of the invention. It should be noted that each embodiment or example described in this specification is not limited to a single embodiment or example, but may also be combined with other embodiments or examples. Accordingly, the citation of claims in the patent claims is merely an example of an embodiment, and the technical concept of the present invention should not be interpreted as being limited only to a combination with the cited claims; rather, combinations with various claims are also included within the scope of the technical concept of the present invention. FIG. 1 shows a flowchart of a method for constructing a hydrogen pipeline according to an embodiment of the present invention, FIG. 2 shows a schematic plan view of a welded pipeline installed in the method for constructing a hydrogen pipeline according to the present invention, and FIG. 3 shows a schematic view of the installation of FIG. 2 seen from one side. As shown in FIG. 1, a method for constructing a hydrogen pipeline in one embodiment includes an exploration step (S110); a digging step (S120); an excavation step (S130); a sheet pile installation step (S140); a semi-shield step (S150); a pipeline installation and welding step (S160); an inspection (S170); a heat shrink sheet installation step (S180); and a temporary structure dismantling step (S190). In this invention, the hydr