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

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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 ?
Limited Tenders are invited for Procurement Of Labyrinth Seals
Once the accuracy of the model was confirmed it was then possible to introduce design improvements to the impellers, the labyrinth seals, the inter-coolers, the bearings and the shaft itself.
Study Reliability and Reporting Limitations I-1 Disclaimers I-2 Data Interpretation & Reporting Level I-2 Quantitative Techniques & Analytics I-3 Product Definitions and Scope of Study I-3 Product Segments I-4 Gaskets I-4 Non-Metallic Gaskets I-4 Metallic Gaskets I-4 Seals I-4 Mechanical & Rotary Seals I-4 Molded Packing I-5 Other Seals I-5 O-Rings I-5 Flexible Seals I-5 Diaphragm Seals I-5 Vehicle Body Seals I-5 Labyrinth Seals I-5 Felt Seals I-6 Lip Seals I-6 Ferrofluid Seals I-6 End-Use Segments I-6 Automotive I-6 Process/Refinery/Other General Machinery I-6 Pulp & Paper I-6 Marine/Rail I-7 Others I-7
This new line also includes labyrinth seals on each end of the motor, enhanced sealing around the lead exit, same size bearings on each end and a moisture resistant insulation system.
With the increasing parametric options of the working body of turbomachinery the research questions and rational design of the labyrinth seals are becoming more relevan, since an increase in initial pressure increases the leakages through all the labyrinth seals of the machine and reduces the benefits of working medium with high parameters [1].
Use of bearing# 2 forward and aft labyrinth seals + brush seals; and
Actions included removing the bearings' labyrinth seals, and replacing them with bearing isolators between the shaft and housings.
We believe TCE can be a valuable addition to the John Crane organization by providing superior aftermarket capabilities in the manufacture and repair of babbitted bearings and labyrinth seals for critical rotating equipment worldwide.
Tenders are invited for Supply of Labyrinth seals and oil rings for HT Motors
The main focuses of development were on optimising internal clearances, the labyrinth seals and enclosure.
Therefore, the new absolute encoder uses special labyrinth seals around the shaft to meet stringent IP69k ratings.
Repair of replacement of seals generator bearing metal and machining, and taking into account the limitations of oil leaks from the labyrinth seals into the barrel of the generator (the parts necessary to repair the seals will provide the Contractor)