Search results
A labyrinth seal is a type of mechanical seal that provides a tortuous path to help prevent leakage. An example of such a seal is sometimes found within an axle 's bearing to help prevent the leakage of the oil lubricating the bearing.
The labyrinth seal is a controlled leakage seal used to prevent high-pressure gas leaking out of the case to the atmosphere and minimizes internal leakage. The labyrinth seal consists of one or more sharp-edged ridges machined on the outside diameter of a rotating shaft or on the inside diameter of a sealing passage as shown in Fig. 8.34.
A labyrinth seal is also known as a non-contact seal or a mini maze seal. It is primarily used in rotating equipment to protect bearings. It consists of two rings that do not contact and rely on a complex labyrinth gap to prevent contamination, splashing liquids, or other particulates from crossing the seal barrier.
What Is A Labyrinth Seal? The basic concept of labyrinth seals is to reduce contaminant ingression not only by restricting the clearance through which particles enter but also by creating areas of turbulent flow to exclude contaminants.
Labyrinth seals and clearance seals are minimum-leakage seals that protect machine elements from contamination through a noncontact method. They operate on the principle of positive clearance and do not rub on shafts or housing.
A labyrinth seal is cross-sectioned in Fig. 12.11A. There is a rotating mechanical shaft seal “mech seal” located in the “head.” See Fig. 12.12. The head of the seal will be bolted to the bottom of the pump intake. Well fluid moving into the pump intake will be on the top of this shaft seal.
A labyrinth seal is a non-contacting close clearance machine component whose major purpose is to restrict leakage of the working fluid or gas in a machine. Such seals can be found in centrifugal and axial flow gas compressors, steam turbines, hot gas expanders, and aircraft jet engines.
Feb 15, 2024 · Labyrinth seals are mechanical devices that reduce the leakage between moving components of rotating machines. They are crucial for determining the performance of these machines and essential for reducing greenhouse gas emissions. Therefore, mathematical optimization algorithms for labyrinth seals are of high interest.
Rai et al. (2016) [20] utilize a 2D CFD analysis to assess the improvement in the leakage performance of a labyrinth seal and propose a new seal configuration with “air-curtains” (air injection) from the stator. The air-curtains work as fluidic barriers breaking the jet through flow in the seal leakage path.
LABYRINTH SEALS. The labyrinth gland can withstand higher steam conditions than the carbon ring gland. Figure 9.1 ( a) illustrates a simple form of a labyrinth seal. It consists of a ring having a series of machined fins. The fins form a number of fine annular restrictions.
