Siemens Energy, Inc.

Luis Estrada

Frank Moehrle

Jeremy Lefler

Martin Konen

A gas turbine combustor cap assembly () including a pre-mix tube () with an upstream flange () that aligns and seats the tube against a primary feed plate () attached to an upstream end of a support ring (). The pre-mix tube may have an intermediate flange () at an intermediate position on the length of the tube that aligns and seats the tube against an intermediate structural frame () attached to the support ring at an intermediate position on the length of the support ring. The combustor cap assembly () may have multiple pre-mix tubes, including a central pre-mix tube () with upstream () and intermediate () flanges and a circular array of outer pre-mix tubes () with at least an upstream flange ().

Gas turbine combustion cap assembly

An intermediate support frame () that spans an inner diameter of a support ring () of a gas turbine combustor cap assembly () at a position intermediate the length of the support ring. The intermediate support frame may have a central encirclement () that receives a central fuel pre-mix tube () of the combustor cap assembly, and may further have a circular array of outer stabilization rings () that each receive a respective outer pre-mix tube (). The central pre-mix tube may be affixed to the central encirclement (), for example by welding. The outer pre-mix tubes may be slidably engaged in the outer stabilization rings (), providing lateral stability while allowing differential thermal expansion. The intermediate support frame may have holes () for coolant passage, and perimeter tabs () for attachment to the support ring ().

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San German, Puerto Rico

Luis Estrada