Pipeline passive zero energy consumption freeze-proofing device based on PCM

Abstract

The invention discloses a pipeline passive zero energy consumption freeze-proofing device based on PCM. The pipeline passive zero energy consumption freeze-proofing device based on PCM comprises a work pipe, an erosion resistant coating, a PCM layer, an embedded support, a case pipe and a heat insulation layer. The work pipe (1) is located on the innermost side; the erosion resistant coating is located on the outer side of the work pipe (1); the PCM layer (3) is located in a cavity structure between the erosion resistant layer (2) and the case pipe (5); the embedded support (4) is also locatedbetween the erosion resistant layer (2) and the case pipe (5); and the heat insulation layer (6) is attached to the outer side of the case pipe (5) and serves as the outermost layer structure. The PCM layer (3) is filled with a phase-change medium which is liquid at the room temperature; the embedded support (4) used for fixing the cavity structure between the erosion resistant coating (2) and the case pipe (5) are of a branch-shaped structure; and the case pipe (5) and the erosion resistant coating (2) provide a containing cavity for the PCM layer (3) together. The pipeline passive zero energy consumption freeze-proofing device based on PCM can achieve the technical purposes that no power facility or energy consumption is needed, the structure is simple, implementation is easy, operationand maintenance are convenient, and the requirements for energy conservation and environment protection are met.

Description

technical field [0001] The invention belongs to the technical field of pipeline antifreeze, in particular to a PCM-based passive zero energy consumption antifreeze technology for pipelines. Background technique [0002] For a long time, in the northern region, the antifreeze technology of pipelines has been the focus of attention of all parties. At present, the commonly used antifreeze technical measures are heat tracing and medium flow. Heat tracing is a technology that supplements heat to the outer wall of the pipeline on the basis of heat preservation, so as to maintain a certain temperature of the medium, thereby avoiding the freezing of the medium in the pipeline. Common forms of heat tracing include electric heat tracing, steam tracing, and hot water tracing. Medium constant flow is a technology that adopts the principle of "flowing water does not rot" for antifreeze. Its core is to keep the medium in the pipeline flowing continuously. When the temperature of the med...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a passive zero-energy antifreeze device for pipelines based on PCM to solve the antifreeze technical problems of pipelines without power facilities and energy consumption, simple structure, easy implementation, convenient operation and maintenance, and meeting the requirements of energy conservation and environmental protection

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