A rotary compensator is a new type of compensator for thermal expansion in thermal pipelines. The construction of the rotary compensator mainly consists of components such as a whole sealing seat, sealing cover, elbows, friction-reducing alignment bearings, sealing materials, and a rotating cylinder, which need to be assembled in two or more sets when installed on thermal pipelines. This forms a relative rotation to absorb the thermal displacement of the pipeline, thereby reducing the stress on the pipeline.
Advantages of the rotary compensator:
(1) Large compensation capacity; can be arranged according to natural terrain and pipeline strength; a group of compensators can compensate for an 800-meter pipeline section.
(2) No blind flange force generated from medium pressure, the fixed bracket can be made very small, particularly suitable for large-diameter pipelines.
(3) Excellent sealing performance, requires no maintenance during long-term operation.
(4) Substantial investment savings.
(5) Easy design and calculation.
(6) Swivel compensators can be installed on steam and hot water buried pipelines, significantly reducing investment costs and enhancing operational safety.
Rotary compensators are typically installed in groups of 150-500m on pipelines (depending on the natural terrain), with over a dozen installation options, which can be determined based on the pipeline direction. After using this type of compensator, the spacing between fixed supports is increased, and guide supports should be appropriately added to avoid pipeline flexing. To reduce friction resistance during pipeline operation, rolling supports should be installed on sliding supports.