What is an expansion joint

Expansion joint is a flexible element for displacement compensation of heated pipes and equipment. The main working element bellows is contracted to absorb stress and avoid rupture due to stress concentration in the pipeline.

As an accessory of pipeline equipment, those who are not familiar with it will guess by its name "expansion joint" that it is a device that can expand, and it can indeed absorb expansion, but it can not expand itself. So what exactly is an expansion node? The universal bellows series takes you into the expansion joint from many aspects

Expansion joint is a flexible element for displacement compensation of heated pipes and equipment, which is widely used in energy, petrochemical, electric power, metallurgy, light industry, medicine, heat, dust removal and other industries and residents' lives. In various industries, pipeline transportation and equipment are indispensable, and valves, expansion joints and other devices need to be installed in the pipeline to ensure stable operation of the pipeline.

The pipeline plays the role of conveying the circulation medium, and the medium is divided into a variety of fluids, gases, dust particles, etc. In the process of circulation and transportation, these media will expand and shrink due to changes in temperature due to their own or environmental reasons. Cause stress in the pipe. At this time, it is necessary to shrink the corrugated pipe, the main working element of the expansion joint, to absorb the stress and avoid the rupture caused by the stress concentration in the pipeline. For the equipment through the expansion joint to absorb the vibration generated during the operation of the equipment.

In summary, the function of the expansion joint is to absorb displacement, reduce vibration and noise, and make the pipe system or equipment run stably. Expansion joint to adapt to a variety of different working conditions, so its specifications have a variety of forms.