Selection method and system for aboveground public gas pipeline material

Abstract

The invention discloses a selection method and a selection system for an aboveground public gas pipeline material. The selection method comprises the steps of: A, analyzing failure risk factors of a gas pipeline according to the operation data of the gas pipeline; B, performing corrosion evaluation on the gas pipeline according to environmental conditions; C, predicting service life of the gas pipeline according to the environmental conditions; D, performing economic loss analysis and whole life cycle cost evaluation according to the environmental conditions; E, and selecting a material of thegas pipeline according to techno-economic comparison and the existing urban gas standards. The selection method and the selection system perform selection according to performance indexes of the environmental conditions and material economic indexes, can better satisfy safety and economical requirements of the aboveground public gas pipeline in the actual operating conditions, select the gas pipeline material favorably and reasonably, and can effectively avoid failure of the pipeline material caused by environmental factors, thereby being capable of guaranteeing using safety of the pipeline material with the designed life, and reducing economic loss.

Description

technical field [0001] The invention relates to the field of city gas, in particular to a method and system for selecting materials for aboveground public gas pipelines. Background technique [0002] The role of urban aboveground gas pipelines is to distribute and transport low-pressure or medium-pressure gas to residential users' homes and commercial gas points. Because gas is flammable and explosive, the performance of the above-ground public gas pipeline materials is extremely important for the safe and stable supply of gas . [0003] In the prior art, the selection of materials for urban aboveground gas pipelines is mainly based on mechanical performance indicators, including tensile strength, yield strength and wall thickness as references. But the prior art has at least the following problems: [0004] 1. In the prior art, only the mechanical properties are used as the performance index of the urban above-ground public gas pipeline materials, which cannot accurately ...

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Problems solved by technology

[0009] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a method and system for selecting materials for public gas pipelines on the ground, aiming to solve the problem that the selection method of gas pipelines in the prior art does not meet the actual use needs of gas supply

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