Power station high-temperature pipe system maintenance method based on non-probability reliability theory

Abstract

The invention relates to a power station high-temperature pipe system maintenance method based on the non-probability reliability theory. The power station high-temperature pipe system maintenance method includes the steps of conducting finite element calculation on the strength of a power station high-temperature pipe system, determining key detection parts of the power station high-temperature pipe system, determining creep damage parameters with the non-probability reliability theory, building a creep damage probability model by determining the creep damage parameters, calculating structural failures according to the creep damage probability model, building a maintenance method model based on reliability analysis according to detected data, materials of the power station high-temperature pipe system and structure test results, and determining the optimum maintenance time of the high-temperature pipe system according to the maintenance method model and the actual engineering maintenance cost. The non-probability reliability maintenance method is achieved through the power station high-temperature pipe system, the structural probability reliability is efficiently and accurately determined, maintenance plans can be accurately determined, the maintenance method can solve similar problems of high-temperature pipes in other fields, and therefore the application range is wide.

Description

technical field [0001] The invention relates to a maintenance method for a high-temperature pipeline system in a power station, in particular to a maintenance method for a high-temperature pipeline system in a power station based on non-probability reliability theory. Background technique [0002] The maintenance of the high-temperature piping system of the power station is an important issue concerned by thermal power plants and thermal power plants. Because the high-temperature and high-pressure steam pipelines in modern thermal power plants and thermal power plants are generally expensive, and because the deterioration factors of materials in high-temperature and high-pressure environments are complex and difficult to predict, power plants High-temperature piping systems are prone to failure. Once a failure occurs, it will have a huge impact on the company's economy and social security. [0003] In view of this, the maintenance of high temperature pipelines is very import...

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Problems solved by technology

[0002] The maintenance of the high-temperature piping system of the power station is an important issue concerned by thermal power plants and thermal power plants. Because the high-temperature and high-pressure steam pipelines in modern thermal power plants and thermal power plants are generally expensiv

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