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 ?
Tenders are invited for rfq- 8266 procurement of complete bearing housing with labyrinth seal for concentrator through central public procurement portal (cppp - e procurement)
The new Z-type dust shield with its innovative labyrinth seal, helps to reduce grease loss by 20%, and reduces contamination by 30% compared to the previous design.
The automatic system is designed to provide regularly scheduled injections of the proper volume of grease into the labyrinth seal to maintain a fresh grease barrier that protects the oil seals from outside contaminants and extends seal life.
The tractor has double cone synchronizer and a double labyrinth seal. It also features a hydraulic clutch and one-touch power take-off button.
The labyrinth seal is maintenance-free, unlike traditional sealing methods, which need to be replaced.
The new and improved labyrinth seal design extends the life of the product by minimizing the ingress of dust and contaminants.
This advantage of herringbone-grooved TOS seal is consistent with other TOS seals with complex grooves, such as straight labyrinth seal, hole-pattern seal, honeycomb seal, and other damping seals.
engineered shaft for additional load capacity, along with an adjusting nut that provides additional protection to the seal area and establishes a precise bearing adjustment; a positive hold down that includes drop-in rolls that are factory assembled and positively secured; an external labyrinth seal featuring a unique roll head and nut combination to produce an extremely long path, close tolerance labyrinth seal; and interchangeable rolls (wing and center), either sealed or regreaseable, that are interchangeable.
The labyrinth seal is placed into a special designed adapter with installation situation comparable to the chain tensioner.
Lin X, "Analysis of dynamic characteristics of fluid force induced by labyrinth seal," Chinese Journal of Mechanical Engineering, vol.
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.
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.