Axial-flow turbine

Axial-flow turbine

  • CN 106,256,994 A
  • Filed: 06/16/2016
  • Published: 12/28/2016
  • Est. Priority Date: 06/18/2015
  • Status: Active Grant
First Claim
Patent Images

1. an axial-flow turbine, possesses upstream side stage of turbine and downstream stage of turbine,Above-mentioned upstream side stage of turbine has:

  • The multiple upstream sides along the circumferential direction arranged between wheel in upstream side dividing plate foreign steamer and upstream side dividing plateStator blade;

    The outer circumferential side being located at turbine rotor and the multiple upstream side moving vanes along the circumferential direction arranged;

    AndIt is located at the front end of above-mentioned upstream side moving vane and the inwall across gap Yu above-mentioned upstream side dividing plate foreign steamerThe cover that face is opposed,Above-mentioned downstream stage of turbine has;

    It is located at the downstream of above-mentioned upstream side stage of turbine and forms the downstream of inner circumferential side end wall surface with expanded shapeSide dividing plate foreign steamer;

    In above-mentioned downstream dividing plate foreign steamer and downstream dividing plate wheel between along the circumferential direction arrange multiple underTrip side stator blade;

    AndThe outer circumferential side being located at above-mentioned turbine rotor and the multiple downstreams moving vane along the circumferential direction arranged,The opening angle of the inner circumferential side end wall surface of above-mentioned downstream dividing plate foreign steamer is formed than the inner circumferential of above-mentioned coverThe angle of inclination of side wall surface is big,This axial-flow turbine is characterised by,The meridian plane of the inner circumferential side end wall surface of above-mentioned downstream dividing plate foreign steamer is shaped so as to;

    at above-mentioned upstream sideAt least there is between stage of turbine and above-mentioned downstream stage of turbine a flex point, and above-mentioned flex point relative toThe tangent slope of steam flow path direction is just.

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