The carbon seal ring of a refrigeration compressor crankshaft mechanical seal is held in position against the stationary ring face by using what device?
β’ Mechanical shaft seals on refrigeration compressors β’ How axial force is applied to keep two seal faces in contact β’ Typical function of snap rings, springs, thrust washers, and woodruff keys on a rotating shaft
β’ Which device can maintain a constant sealing pressure between two faces as the seal wears over time? β’ Which of these parts is mainly used to locate or lock components on a shaft rather than to push two faces together? β’ Think about what is needed to keep the carbon ring pressed firmly but gently against the stationary ring during operation.
β’ Identify which choice can provide a continuous axial force on the carbon seal ring β’ Eliminate any parts that are primarily for shaft location or locking, not for applying pressure β’ Consider how the seal must stay in contact even with vibration, thermal expansion, and wear
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