Gas turbine engine and seal assembly therefore
AssigneeUnited Technologies Corporation
InventorsRoss Wilson, Michael G McCaffrey, John R Farris, Theodore W Hall, John J Korzendorfer, Elizabeth F. Vinson, Jeffrey Michael Jacques, Edwin Otero, John E Paul
Life of this patent
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Abstract
The present disclosure relates generally to a hydrostatic advanced low leakage seal having a shoe supported by at least two beams. An anti-vibration beam spacer is disposed in contact with two adjacent beams and operative to mitigate an externally induced vibratory response of the beams.
Claims17
A seal assembly disposed between a stator and a rotor, the seal assembly comprising:
- a hydrostatic advanced low leakage seal including:
- a base;
- a shoe;
- and
- a spring element including a first spring element end operatively coupled to the base and a second spring element end operatively coupled to the shoe, the spring element further comprising:
- a first beam extending between the first and second spring element ends;
- and
- a second beam extending between the first and second spring element ends and radially spaced from the first beam;
- and
- a first beam spacer disposed in contact with the first beam and the second beam and operative to mitigate an externally induced vibratory response of the spring element;
- wherein the base is operatively coupled to one of the stator and the rotor and the first beam spacer is held in contact with the first and second beams by friction.
A gas turbine engine comprising:
- a compressor section, a combustor section and a turbine section in serial flow communication, at least one of the compressor section and turbine section including a stator, a rotor, and a seal assembly, the seal assembly comprising:
- a hydrostatic advanced low leakage seal including:
- a base;
- a shoe;
- and
- a spring element including a first spring element end operatively coupled to the base and a second spring element end operatively coupled to the shoe, the spring element further comprising:
- a first beam extending between the first and second spring element ends;
- and
- a second beam extending between the first and second spring element ends and radially spaced from the first beam;
- and a first beam spacer disposed in contact with the first beam and the second beam and operative to mitigate an externally induced vibratory response of the spring element;
- wherein the base is operatively coupled to one of the stator and the rotor and the first beam spacer is held in contact with the first and second beams by friction.
A seal assembly disposed between a stator and a rotor, the seal assembly comprising:
- a hydrostatic advanced low leakage seal including:
- a base;
- a plurality of shoes;
- a plurality of spring elements, each including a first spring element end operatively coupled to the base and a second spring element end operatively coupled to a respective one of the plurality of shoes, each of the plurality of spring elements further comprising:
- a first beam extending between the first and second spring element ends;
- and a second beam extending between the first and second spring element ends and radially spaced from the first beam;
- and
- a first beam spacer disposed in contact with the first beam and the second beam and operative to mitigate an externally induced vibratory response of the spring element;
- wherein the base is operatively coupled to one of the stator and the rotor and the first beam spacer is held in contact with the first and second beams by friction.
Dependencies are inferred from the claim text.