Bellow, also known as an expansion joint, is used to eliminate expansion or displacement in pipes, vessels, or equipment due to climate changes, thermal expansion caused by other reasons, or as a shock absorber. It can be installed at the inlets and outlets of pumps or at both ends of other high-frequency machinery to reduce or eliminate their vibration, thereby extending the service life and improving the sealing performance of the pipeline. It solves problems that metal compensators cannot, reduces corporate costs, and enhances production efficiency.
Additionally, it can be used to absorb deviations between design and actual installation. It features reliable operation, compact structure, strong compensation ability, resistance to corrosion from various media, and a long service life.
Available in DN25-DN2000, offering various types of compensators from one to nine waves.
Fatigue Cycles: ≥5,000 times
In the pipeline design of petrochemical facilities, compensators often need to account for high-temperature and high-pressure conditions. Therefore, during design, consideration must be given to the thermal expansion of the pipeline. Generally, it is preferable to utilize the flexibility inherent in the pipeline structure to absorb thermal displacement. When limitations such as process operating conditions and equipment layout prevent the pipeline system from having flexibility, compensating devices can be used to absorb the pipeline's thermal displacement. This is due to the strong compensating capacity of rotating compensators.
Changes in management pressure reduction can reduce the operation cost of the equipment, while changes in the thermal expansion compensator's stress greatly enhance the safety of the pipeline system during operation. Therefore, this advantage is present in the design of petrochemical plants, particularly in the design of long-distance petrochemical pipelines.
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