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Steam cooled rich-burn combustor liner

  • US 4,819,438 A
  • Filed: 12/23/1982
  • Issued: 04/11/1989
  • Est. Priority Date: 12/23/1982
  • Status: Expired due to Fees
First Claim
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1. A combustor system including a primary rich burn section having a liner and followed by one or more lean burn sections and comprising:

  • a cylindrical jacket disposed outwardly of said combustor rich burn section liner to form an annular space;

    a plurality of barriers disposed in said annular space, each barrier being in the form of a spiral, thereby forming a plurality of spiral passageways;

    a first annular manifold disposed at one end of said rich burn section liner adjacent said one lean burn section and communicating with said annular space;

    a second annular manifold disposed at the other end of said rich burn section liner and communicating with said annular space; and

    means for directing steam into said first manifold at a pressure approximately equal to the discharge pressure of said rich burn section, said steam flowing in a plurality of spiral streams through said annular space into said second annular manifold, said barriers being attached to said liner and wherein said jacket does not sealingly contact said barriers when said rich burn section of said combustor is not operating but does when said combustor is operating, and wherein said combustor liner has a first conical section at one end adjacent said one lean burn section and a second conical section at its other end, said jacket including first and second conical jacket sections outside of said first and second combustor liner sections, respectively, said conical jacket sections being separated from said cylindrical jacket section by first and second annular gaps, and first and second annular expansion tubes enclosing said first and second gaps, respectively.

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