Gas-turbine unit with high velocity, low pressure turbine section

Gas-turbine unit with high velocity, low pressure turbine section

  • CN 104,105,638 B
  • Filed: 01/21/2013
  • Issued: 11/05/2019
  • Est. Priority Date: 01/31/2012
  • Status: Active Grant
First Claim
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1. a kind of gas-turbine unit, comprising:

  • Fan;

    Compressor section is in the fan and is in fluid communication, and the compressor section includes the first compressor section and theTwo compressor sections;

    Combustion sec-tion is in the compressor section and is in fluid communication;

    Turbine section is in the combustion sec-tion and is in fluid communication;

    Wherein, the turbine section includes the first turbine section and the second turbine section;

    First turbine section and describedOne compressor section is rotated in a first direction, and wherein second turbine section and the second compressor section edge are oppositeSecond direction rotation;

    Wherein, first turbine section has first outlet area at first outlet point, and is rotated with First Speed;

    Wherein, second turbine section has second outlet area at second outlet point, and is rotated with second speed, describedSecond speed is higher than the First Speed;

    Wherein, primary energy is defined as the product of first square of speed and the first area;

    Wherein, secondary energy is defined as the product of second square of speed and second area;

    Wherein, the ratio of the primary energy and the secondary energy is between 0.5~1.5;

    AndIt wherein, include gear reduction unit between the fan and the low shaft driven by first turbine section, so that instituteFan is stated to rotate with the speed lower than first turbine section,Wherein, the ratio is greater than or equal to 0.8.

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