Advantage of mechanical coupling
The mechanical coupling is a new type of line connection device, which can replace the flange and the compensator providing connections for pipes and tubes, pipes and valves in various pipelines. In the same use occasions and conditions. The telescopic device has been widely used in petrochemical industry, ships, power and other industries in China. The expansion device is characterized in the chemical pipeline instead of the compensator. When installed, the connecting cover are respectively sheathed, the sealing ring and the sleeve should be installed on both sides of the pipe then tighten the bolts. At both ends of the pipeline in casing leave some space for axial slip, when the expansion and contraction of the pipeline can freely telescopic but no leakage.
The stress situation of the dresser coupling structure inner wall of the gland, Sealing ring 3. Socket bolt. The expansion with the sealing ring selection is very important, can choose according to different using conditions, the operating temperature. 1 in 30 ~ 80 DEG C can be chosen chloroprene rubber and nitrile butadiene rubber (NBR) of the sealing ring and the oil resistance and aging resistance are very good, acid and alkali resistance, used for normal temperature water, cold water, hot oil and some chemicals occasions.
The dresser coupling material using carbon steel, stainless steel material, product structure design is reasonable, stable performance, displacement compensation is unparalleled. The operation principle of the dresser coupling is the phenomenon that the pipeline is damaged due to uneven stress by using the self expandable property.
