Model Construction of Tail Shaft Drive Based on Tail Shaft Seal and Its Mapping Verification
Seal components play a key role in preventing seawater from entering the bearing cavity.Since these components often operate in the variable deep-sea environment,they need to cope with the changing pressure,friction,and corrosive and poor lubrication properties of seawater.Based on this,the study proposes a tailshaft drive model based on tailshaft sealss.Two options of tailshaft dynamic sealing device are designed in the model,i.e.,decompression-compensated seal and surface-optimised mechanical seal,and their performance is evaluated by finite element analysis and optimisation algorithms.The results show that the decompression-compensated seal can effectively reduce the working pressure by about 10％,which in turn extends the service life of the seal.In the surface-optimised mechanical seal solution,the oil film pressure reaches its maximum value when the area ratio is 20％and the depth-to-diameter ratio is about 0.03.Taken together,both sealing schemes can significantly improve the performance and reliability of the tail shaft sealing device in variable environments.This study provides a useful reference for the design of sealing systems in deep-sea exploration and other fields,and has significant application prospects.
seal assemblytail shaftmechanicalpressure-relief regulated
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