Labyrinth seal for turbine blade dovetail root and corresponding sealing method

Labyrinth seal for turbine blade dovetail root and corresponding sealing method

  • CN 101,624,920 A
  • Filed: 07/08/2009
  • Published: 01/13/2010
  • Est. Priority Date: 07/08/2008
  • Status: Active Application
First Claim
Patent Images

1. labyrinth seal part (100) that is used for gap (90) between dovetail key shape thing (70) and the rotor (20) comprising:

  • Place high pressure side (140) first branch (120) on every side of dovetail key shape thing (70);

    Place low voltage side (150) second branch (130) on every side of dovetail key shape thing (70);

    AndPlace the chamber, labyrinth (110) between first branch (120) and second branch (130), the high-pressure liquid in first branch (120) gap (90) on every side of feasible process dovetail key shape thing (70) expands in chamber, labyrinth (110), so that the high-pressure spray scale of construction of second branch (130) is flow through in restriction.

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