Failure Analysis and Response Strategy of Circulation Pipeline
Circulating water heating is an important heating equipment widely used in cold northern areas.When high temperature and high pressure hot water suddenly enters the vacant radiator for half a year,there will often be water leakage phenomenon.The radiator can easily cause the family economic loss because of its sudden water leakage.In this paper,the failure of radiator leakage is analyzed and the failure mechanism is discussed.First of all,the physical and chemical detection of the failure pipeline,including appearance detection,composition detection analysis and tissue analysis,by simulating the stress field distribution in the radiator.The study results show that after the heating,the retained water and air react with the iron to produce iron oxide.The stress simulation calculation result shows that the stress level at the end of the pipe is high and the high pressure at the end of the pipe hits the oxide layer,causing the oxide layer to fall off and forming the pipe perforation phenomenon.Based on the research results,the main reason for the failure of the radiator pipeline is that the failure site of the oxidation corrosion is impacted by the high pressure water flow,and it puts forward reasonable suggestions for the production design and operation and maintenance of the radiator pipeline.
oxidative corrosionfailure analysisphysical and chemical analysisstress simulationpipeline
NETL
NSTL
万方数据
