| 摘要 |
FIELD: power engineering.SUBSTANCE: front device of a firetube of a circular combustion chamber comprises a circular head with external and internal fuel headers and air figured windows for air supply into the primary zone of combustion, which are made on the circular head between the headers, concentrically and evenly arranged along the circumference in one row, with central holes and stands of burner fixation to the circular head. Along the circumference of the external fuel header there are nozzles of gas supply arranged evenly into the internal cavity of the external header. In the stands there are through channels of gas supply to burners, which via burners connect to each other cavities of external and internal fuel headers. To supply gas to the burners, there are additional channels arranged evenly at two sides, both at the side of the external and the internal fuel headers, in the links between air figured windows, and these channels connect to each other the cavity of the internal fuel header with the external one, with the area of the channel cross section, which is more or equal to the area of the cross section of the channel made in stands. The quantity of channels made in the links is equal to the quantity of channels made in the stands.EFFECT: reduction of circumferential unevenness of temperature field with exclusion of local combustion zones with high temperature downstream a front device.2 cl, 1 dwg |
