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US 8,505,302 B2Granted
Multiple tube premixing device
AssigneeGeneral Electric Company
InventorsJong Ho Uhm, Balachandar Naidu, Willy Steve Ziminsky, Gilbert Otto Kraemer, Ertan Yilmaz, Benjamin Lacy, Christian Stevenson, David Felling
Life of this patent
Estimating the term…
Abstract
The present application provides a premixer for a combustor. The premixer may include a fuel plenum with a number of fuel tubes and a burner tube with a number of air tubes. The fuel tubes extend about the air tubes.
Claims14
A premixer for a combustor, comprising:
- a fuel plenum comprising:
- a plurality of fuel tubes comprising a first plurality of fuel tubes and a second plurality of fuel tubes;
- a first chamber in communication with the first plurality of fuel tubes;
- and
- a second chamber in communication with the second plurality of fuel tubes;
- a burner tube comprising a plurality of air tubes, wherein the plurality of fuel tubes extend at least partially into the plurality of air tubes;
- a bell mouth disposed at least partially about the plurality of fuel tubes and extending from an aft end of the burner tube towards an aft end of the premixer to direct air into the plurality of air tubes;
- a fuel plenum flange extending radially about the fuel plenum;
- a burner tube flange extending radially about the burner tube axially downstream of the bell mouth with respect to the direction of fuel flow;
- and
- one or more spacers connecting the fuel plenum flange and the burner tube flange.
8 more elements
A premixer for a combustor, comprising:
- a fuel plenum comprising first and second chambers therein;
- a plurality of first flow tubes extending from the first chamber and a plurality of second flow tubes extending from the second chamber;
- a burner tube comprising a plurality of air tubes therein, wherein the plurality of first flow tubes and the plurality of second flow tubes extend at least partially into the plurality of air tubes;
- a bell mouth disposed at least partially about the plurality of first and second fuel tubes and extending from an aft end of the burner tube towards an aft end of the premixer to direct air into the plurality of air tubes;
- a fuel plenum flange extending radially about the fuel plenum;
- a burner tube flange extending radially about the burner tube axially downstream of the bell mouth with respect to the direction of fuel flow;
- and
- one or more spacers connecting the fuel plenum flange and the burner tube flange.
5 more elements
A premixer for a combustor, comprising:
- a fuel plenum comprising:
- a plurality of fuel tubes;
- and
- a plurality of chambers in communication with the plurality of fuel tubes;
- a burner tube comprising a plurality of air tubes, wherein the plurality of fuel tubes extend at least partially into the plurality of air tubes;
- a bell mouth disposed at least partially about the plurality of fuel tubes and extending from an aft end of the burner tube towards an aft end of the premixer to direct air into the plurality of air tubes;
- a fuel plenum flange extending radially about the fuel plenum;
- a burner tube flange extending radially about the burner tube axially downstream of the bell mouth with respect to the direction of fuel flow;
- and
- one or more spacers connecting the fuel plenum flange and the burner tube flange.
7 more elements
Dependencies are inferred from the claim text.