Power Plant Gyan

Its name from fact from its construction. Labyrinth seals consist of series of thin strips fixed to the casing or other stationary member and arranged so as to maintain the smallest possible clearance with the shaft. The labyrinth seals have small restrictions that increase the velocity of leaking fluid only to have it dissipated in the pockets, thereby throttling the fluid.  The tips of the strips are extremely thin so that if rubbing occurs the tip gets worn away without damaging the shaft.  These labyrinth seals do not prevent complete leakage of fluid. These are effective in only reducing leakage. In it steam in leaking must follow a winding path and change i ts direction many times. It is constructed from thin strip at the outer circumference of shaft of turbine at both end. It is installed at the inner circumferential surface of casing at both end. There are several types of Labyrinth packing is subjected to a throttling action.  This action produced a reduction in