Single Sphere rubber expansion joints after vulcanization again then composed of metal flange and bolt and nut, mainly used for pipeline system,can be to absorb vibration, reducing noise and due to temperature changes caused by thermal expansion and contraction, plays the role of a displacement compensation.
Here is some common phenomena in the use of single sphere rubber joints in pipe:
1. pull off phenomenon: the main reason is when the pipeline in use in the process of vibration is larger or there is a certain angle and pipe bend,because the pressure is too large,stress,exceeds the maximum amount of displacement caused by the pull off phenomenon, in this case,we recommend that you use anti pull off a single ball rubber joints or increase single ball rubber joints quantity to balance pipe displacement.
2.concave phenomenon: mainly because the single sphere rubber expansion joints installed in the pump inlet and outlet,the pump in the opening of the rubber joints will produce over absorption, it can lead to a single ball rubber joints to produce negative pressure (also is concave flat),appear this kind of situation,we should put a rubber joint installed on the negative pressure ring, to ensure the safe operation of the pipeline.
3 cracking phenomenon: with the increase of the number of single spherical rubber joints, the installation environment and the change of temperature caused by the change,it leads to cracking.
Appear this case,our company suggest you:
the first method is to reinforce the steel wire ring. When rubber expansion joint end is with steel wire ring to reinforce, to keep the steel wire circle and let them on a plane.
Second ways,allowing the user to replace the rubber expansion joint according to the use environment and the material.
