1. Cause analysis.
1.Thermal expansion caused by temperature change: Due to the change of ambient temperature, high-temperature resistant polyurethane insulation steel pipe will be affected by thermal expansion and cold contraction, resulting in a change in pipe length, which in turn affects the operation effect of the system.
2.Thermal expansion due to shrinkage of materials: The molecular chains of high-temperature resistant polyurethane materials shrink when heated, causing changes in the volume of the pipes, which can cause thermal expansion problems.
3.Irregular operation during installation: such as poor pipe connection and improper bracket setting, may lead to thermal expansion of the pipeline during operation.
Second, the solution.
1.Use suitable high-temperature resistant polyurethane materials: Choosing high-temperature resistant polyurethane materials with good thermal expansion and cold shrinkage resistance can effectively reduce the occurrence of thermal expansion problems.
2.Optimize pipeline design: Reasonably set parameters such as the length and curvature of the pipeline to reduce the risk of thermal expansion caused by temperature changes. At the same time, the bracket setting is optimized to ensure that the pipeline is not affected by external forces during operation.
3.Strengthen the quality control of installation and construction: During the installation process, strictly abide by the construction specifications to ensure that the pipeline connection is tight and the bracket is set correctly, so as to reduce the thermal expansion caused by non-standard operation.
4.Flexible joints: Flexible joints are used at the pipe connection to effectively absorb the stress caused by temperature changes and reduce the stress concentration caused by thermal expansion.
5.Consider temperature difference compensation measures: In large temperature difference areas, temperature difference compensation measures can be considered, such as setting up a thermostatic tank or circulating water system, to balance the temperature difference between inside and outside the pipeline and reduce the impact of thermal expansion on the system.