Expansion joint of tri-exit of CCU

Expansion joint of tri-exit of CCU

keywords : Construction - Machines & Equipment
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The company has devoted itself to keeping the safe and reliable operation of industrial pipeline by inheriting the materials research achievement and advantage of application technology of 725th institute. In order to guarantee the reliability of the products, it had carried out a large amount of experimental research, and gradually formed the accumulation of technologies in several fields，such as the bellows material selection under different condition of corrosion，the reliability design of large diameter  expansion joints and the design of joints that used for coastal areas. Several high temperature fatigue curves of different materials, such as inconel625, 321, that used for high temperature，high risk expansion joints were founded by the research of high temperature fatigue testing in creeping temperature. The achievements provided basic data for the fatigue design of expansion joints for the high temperature petrochemical fields. The effective measures of ameliorating fatigue life of high temperature welding joints had been achieved by the studies of 304H welding process and high temperature creep performance. Design specification of stress components was established by the searching of stress simulation analysis and testing under different complicated working conditions，that was hard to simulate accurately by the classical mechanics model. The achievements have been widely applied in petrochemical industry and urban heating system in several countries.