Commonly used labyrinth mechanical seals for high-speed rotating mechanical shaft seals-

Commonly used labyrinth mechanical seals for high-speed rotating mechanical shaft seals

　2017-01-13　　

For the shaft seal of high-speed rotating machinery (centrifugal air compressor), the common method is to use labyrinth mechanical seal, liquid floating ring and liquid mechanical seal. The former has a large amount of leakage, while the latter two require a complex oil supply system. There are also problems such as short life span and oil seal pollution. In the 1960s, a gas-lubricated non-contact mechanical seal appeared, followed by a gas-lubricated floating ring seal, and structural optimization and performance tests were carried out on this. The test showed that it can replace the logarithmic spiral groove. Arc grooves are more convenient to manufacture and draw than spiral grooves.　　237.html,

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