Expansion joints are mainly used in the following fields:
Piping system
- In thermal pipes, used to compensate for pipe expansion due to temperature changes. For example, in the central heating system, the hot water pipe will expand as the temperature rises, and the expansion joint can absorb this elongation to prevent the pipe from being damaged by excessive deformation.
- In the pipeline transportation system of the petrochemical industry, the transportation pipeline of media such as crude oil and natural gas will produce displacement due to the temperature and pressure changes of the medium and the thermal expansion and contraction of the pipeline itself, and the expansion joint can effectively compensate for these dispositions to ensure the safe operation of the pipeline.
Industrial equipment
- Used to connect large industrial furnaces, reactors and other equipment to pipelines. For example, an expansion joint is installed at the outlet pipeline of a chemical reactor. When the temperature change of the material in the reactor causes the expansion of the connecting pipeline, the expansion joint can be compensated to avoid leakage or damage at the connection between the pipeline and the reactor.
- In the flue gas piping system of the boiler, because the flue gas temperature is high, it will cause the thermal expansion of the pipe, and the expansion joint can be well adapted to this change to ensure the normal operation of the ventilation system.
Construction project
- In the ventilation system and air conditioning pipes of some buildings, expansion joints can compensate for the expansion deformation of the pipes due to seasonal changes, air conditioning system operation and other factors, and reduce the vibration and noise transmission of the pipes.
- In the water supply and drainage pipe system of high-rise buildings, expansion joints are also used to prevent pipe damage caused by building settlement, thermal expansion and cold contraction of pipes and other factors.
