Selection Skills of welded metal bellows Bellows Expansion J

Writer： admin Time：2021-10-14 22:21 Browse：℃

Welding vacuum bellows bellows expansion joint model selection skills 1. Classification of bellows expansion joints Generally, the bellows joints sold on the market are more common hinge type expansion joints, large tie rod transverse expansion joints, etc., and their composition Relatively simple, the bellows pipe system does not need to add any fixed brackets to obtain a higher blind plate bearing effect; the second is a non-constrained expansion joint, which requires a fixed bracket to be erected on the pipe system to support the axial force, which is common Types are universal expansion joints, axial expansion joints, etc. 2. Principles for the selection of the model of the bellows expansion joint. During the process of selecting the bellows expansion joint, the technician should contact the actual construction of the pipeline to match it with the model of the thermal pipeline. When selecting a model, it is necessary to subdivide and simplify complex pipelines into typical pipe sections of expansion pipelines, ""break them into parts"", and split them into different ""one-shaped"", ""L-shaped"" or ""Z-shaped"" The shape of the pipeline is convenient for later construction and management. After the disassembly is completed, the technician should set the expansion joint model according to the relevant conditions and actual needs, and select the supporting guide bracket based on its expansion and deformation trajectory. In addition, technicians must find out specific parameters such as the blind plate force and fatigue life of the bellows expansion joint to determine the number of brackets and the fixed position."