The use of expansion joints to relieve stress in a piping system, due to thermal expansion, must be done in accordance with the types of joints that exist on the market.
In some piping systems, the projected movements, force values and moments in equipment nozzles are in one or two planes, which means that a single joint does not solve the system and two or more joints must be installed. The possible combinations must be applied according to the behavior and analysis carried out on the system.
Systems in which more than one gasket is required:
Lateral movement in a plane.
Lateral movement in two planes.
Connection to discharge and/or extraction of turbines.
This set of three gaskets is installed to ensure that the turbine nozzle does not receive loads (forces and moments) above the allowable values given by the turbine manufacturer.
Joint combinations must be made according to the behavior of the pipe, supported by a prior study or technical recommendation made by an expert manufacturer. The system of two or more joints has calculation memories which guarantee optimal operation, involving the spring constants of the bellows, calculations according to EJMA, and displacements due to thermal expansion and system loads.
We provide technical advice and support in the selection and installation of these systems, largely accompanied by a flexibility analysis; A prior study of these systems avoids cost overruns when selecting joints, unnecessary quantities and future failures.