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Attachment device for removable components in hot gas paths in a turbine engine

  • US 7,334,960 B2
  • Filed: 06/23/2005
  • Issued: 02/26/2008
  • Est. Priority Date: 06/23/2005
  • Status: Expired due to Fees
First Claim
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1. An attachment device for attaching turbine components to form a hot gas path within the components, comprising:

  • a support structure comprising an annular flange having inner and outer surfaces with at least one axially extending fastener receiving recess for containing a fastener and at least one retention arm extending from the support structure, wherein the at least one retention arm defines at least one recess;

    a securement structure concentrically aligned with the support structure about an axis of rotation, comprising an annular flange having inner and outer surfaces with at least one axially extending fastener receiving recess and at least one retention arm extending from the body of the securement structure and configured to be inserted into the at least one recess formed from the retention arm of the support structure to grasp the at least one retention arm of the support structure after the securement structure has been rotated about an axis the rotation, wherein the outer surface of the securement structure forms a hot gas path outer surface; and

    at least one fastener movably coupled to the support structure, a head of the fastener disposed between the outer surface of the support structure and the inner surface of the securement structure, such that the fastener is moveable between a position in which the fastener extends into the at least one fastener receiving recess of the securement structure thereby preventing rotation of the securement structure relative to the support structure and a position in which the fastener is contained within the at least one fastener receiving recess in the support structure enabling the securement structure to be rotated about the axis of rotation;

    an orifice in the flange of the securement structure that extends through the hot gas path outer surface and enables a tool to be inserted through the hot gas path outer surface from within the hot gas path to engage and move the at least one fastener between positions, and enable the securement structure to be removed in the hot gas path;

    wherein the orifice in the flange of the securement structure is sized to prevent the head of the at least one fastener from passing through the orifice and releasing the fastener into the hot gas path.

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