Patent ID: 11971171
Assignee: SIEMENS ENERGY GLOBAL GMBH & CO. KG
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 20:
21. A pilot cone for use in a burner arrangement, comprising:
a covering which widens downstream along a burner axis and which is passed through by cooling air passages, and having an internal wall which extends upstream from an upstream end of the covering;
an annular gap which extends at the radially external side along the internal wall and comprising cooling air openings which produce a connection from the annular gap to the cooling air passages; and
an external wall which extends upstream with spacing from the internal wall from the covering and which delimits the annular gap at the radially external side;
wherein the internal wall comprises apertures;
wherein a total of the cross sectional surface-areas of all the cooling air openings is smaller than a total of the cross sectional surface-areas of all the cooling air passages; and/or
wherein the cross sectional surface-area of each individual cooling air opening is smaller than the cross sectional surface-area of the cooling air passages.