Permafrost Expansion Impact Analysis On Pipeline Stress Regulator Station

What this paper research is the failure of pipeline under the impact of permafrostexpansion，through the investigation of regulator stations、analysis of elasticity and Theestablishment of the group model，Building gas pipeline models by ANSYS software toanalyze its stress changes by the expansion of Frozen soil，the conclusion will providescientific guidance and theoretical basis for security management and dynamic SecurityMonitoring and regulating stations. This approach will provide Proposal for the researchand development of new pipeline product， and also providing a new way of thinking andmethods for the mechanical analysis of the pipeline problem to protect the safe operationof regulator station， ensuring a steady supply of gas for residents security，what is veryimportant to the safety of regulator station.In this paper，analoging regulator station gas pipeline by the ANSYS software，according to the static environment and the theory of pipeline model to do theReasonable simplification， establishing the finite pipeline model to analyze the Stressdistribution the maximum stress position and the displacement under different diametersand the span. Firstly doing the analysis of the reasons of failures resulting with ANSYSsoftware， Processing according to the results and identifying the parts where the pipelinedeformation failure occurred. Secondly， through the analysis of pipeline under differentboundary conditions， the paper hope to find the relationship between pipeline failure withdisplacement span and diameter and to do a more comprehensive analysis of the actualpipeline regulator station. The results of static analysis of the pipeline indicate that stressconcentration points and weak points focused on the inside of the elbow pipe and tubingground parts. Through the analysis of different diameter pipeline spans and differentcomparative founding the relationship between the pipeline span and diameter withmaximum stress is respectively inverse proportional and proportional.The innovation of this paper is the study of analoging regulator station line by ANSYSsoftware， identifying the risk of pipelines and stress concentration area， analyzing therelationship between maximum stress with displacement of the load and diameter size and span. The results provide a theoretical basis for the hazard warning regulator station toensure the safety of the regulator station.