Turbomachine impingement cooling modules

A turbomachine, comprising:

• a compressor extending from an inlet to a discharge, the discharge of the compressor providing a flow of high pressure air directly into a high pressure plenum defined within an outer casing of the turbomachine;
• a combustor at least partially surrounded by the outer casing;
• and
• a turbine downstream of the combustor,
• wherein the combustor comprises:
• a head end;
• a liner at least partially defining a hot gas path;
• a flow sleeve circumferentially surrounding at least a portion of the liner, wherein the flow sleeve is spaced from the liner to form a cooling flow annulus therebetween, the cooling flow annulus in fluid communication with the high pressure plenum whereby air from the high pressure plenum flows into the cooling flow annulus and from the cooling flow annulus to the head end;
• and
• an impingement module comprising a plurality of impingement orifices and a supply tube, the supply tube extending from an inlet to an outlet, the inlet of the supply tube flush with an outer surface of the flow sleeve whereby the inlet of the supply tube is positioned and oriented to receive a flow of air from the high pressure plenum, the supply tube extending from the inlet through the flow sleeve and radially inward from the flow sleeve to the outlet in the cooling flow annulus, wherein the outlet of the supply tube is coupled directly to a main body of the impingement module, whereby the flow of air flows directly into an internal plenum within the main body of the impingement module via the supply tube, with the plurality of impingement orifices oriented towards an outer surface of the liner whereby the impingement module is configured to direct the flow of air from the high pressure plenum through the impingement orifices to impinge on the outer surface of the liner.