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08 November 2018

54.Labyrinth seal

November 08, 2018 Posted by AK No comments


Function of Labyrinth Seals
  • The bearings are separated from the blower and turbine by labyrinth seals.
  • These seals are sealed by air supply from the discharge of blower to prevent oil entering the blower and to prevent contamination of the oil by the exhaust gas.
  • In case of defective labyrinth seals on blower side, oil is leaked into the air system the cooling surfaces are covered with oil which are insulators and the cooling efficiency will be reduced. Also there will be deposits on the blower and the blower efficiency will be reduced.
  • In case of defective labyrinth seals on turbine side, the oil is leaked into the exhaust side and there will be carbon deposits on the nozzle and turbine blades. Reduce blower efficiency and fire in the exhaust piping. It will cause turbocharger surging. Oil will contaminate with exhaust  gas.

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