labyrinth seal


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labyrinth seal

[′lab·ə‚rinth ‚sēl]
(engineering)
A minimum-leakage seal that offers resistance to fluid flow while providing radial or axial clearance; a labyrinth of circumferential knives or touch points provides for successive expansion of the fluid being piped; used for gas pipes, steam engines, and turbines.

labyrinth seal

labyrinth sealclick for a larger image
A type of air and/or oil seal used around the main-shaft bearing in a gas turbine engine. The seal consists of a series of rotating blades that almost contact the seal land (the base of the seal). A small amount of air flows between the seal and the land and prevents oil from flowing past the seal. A gas seal between fixed and moving parts that compose a series of chambers, even though their sides do not quite touch, reduces the escape of gas to near zero.
References in periodicals archive ?
The labyrinth seal is placed into a special designed adapter with installation situation comparable to the chain tensioner.
And because of the twin-turret design that allows a simple, non-contacting labyrinth seal, there is good thermal stability because it prevents the thermal distortions that can be caused by the heat generated from constantly changing the coolant return path as the grinding wheel carriage moves along the linear axis.
An additional 3-4 per cent could also be gained through changing the labyrinth seal material and improving the clearances.
Revolvo has developed a high performance labyrinth seal and Kevlar packing seals, which provide effective sealing even in the worst operating environments, which has been evidenced through installations in many demanding applications worldwide.
Change into labyrinth seal for gearbox to prevent fluff entering.
The metal labyrinth seal broke apart, which should be restored now, Avazov said.
The authors consistently and thoroughly explained the methods of design improving of a labyrinth seal after the construction of its axisymmetric model.
For this process, the labyrinth seal protects the filter insert from soaking and dampening from within.
The oil kept in the groove supplies oil to the clearance and also the refrigerant gas-oil labyrinth seal effect.
A patented Scroll Wrap with Alumite surface treatment and labyrinth seal provide superior performance and reliability.
A special labyrinth seal prevents contamination between the chuck body and the ring.