Application of expansion joints in typical piping systems---Lateral,Angular and Combined Movements

Applications of Expansion Joints in Typical Piping Systems

Lateral,Angular and Combined Movements 

        Often the piping arrangement,force limitations,number of operating cycles,and economics,dictate that deflections may not be simple axial motions as described above,but will be lateral,angular or combinations of all three. The folloing examples show how various piping problems are solved with different tyeps of expansion joints,anchoring and guiding arrangments.

For Example

      In this example,if the pressure and deflections are low enough,an inexpensive single expansion joint is able to absorb the thermal expansion of both the pipe run in which the expansion joint is located,and the perpendicular pipe.The growth of the perpendicular pipe produces lateral deflection in the expansion joint,while axial deflection absorbs the growth of the horizontal run.This combination of movements is ,therefore,handled by a single expansion joints.The pressure thrust cannot be resisted by the expansion joint and a "directional" anchor must be provided at the elbow to permit the elbow to deflect vertically.The pipe guiding required follows this of example.