System And Method For Purging Fuel From Turbomachine

Abstract: ABSTRACT OF THE DISCLOSURE A system includes a fuel premixer configured to distribute a fuel to a combustor and a purge system configured to purge the fuel from the fuel premixer. The purge system includes a discharge line configured to receive a flow of a purge mixture from the fuel premixer. The purge system includes an orifice coupled to the discharge line and an eductor having an interior, an opening, and an outlet. The orifice is configured to constrict the flow of the purge mixture. The interior is fluidly coupled to the orifice, to the opening, and to the outlet. The purge mixture is configured to flow through the interior from the orifice to the outlet, the flow of the purge mixture through the orifice is configured to draw coolant into interior of the eductor through the opening, and the coolant drawn through the opening is configured to mix with the purge mixture. FIG. 1

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