| 摘要 |
FIELD: the invention refers to heat-and-power engineering. ^ SUBSTANCE: the heating tube of the combustion chamber has units installed telescopically one after another with forming right after the places of joining of any of the two units of a ring slit for cooling slit. The ring cooling slit is located between the rear end of the in front standing unit being the visor of the refrigerating slit and the stagger of the front end of the following unit fulfilled with openings for inlet of cooling air located along its circumference with displacement to the place of joining of the units. The cooling slit is provided with stabilizing its geometry elements formed on the unit in the shape of sections concave in the direction of the opposite units. The concave sections are fulfilled on the stagger of the front end of the following unit with location of each of them from the place of joining of the units to corresponding opening of the stagger inclusively and are formed with the bottom adjacent to the visor and overlapping the edge of the opening from the side of the place of joining the units. The correlation of the length of the part of the visor located along the movement of air behind the concave section adjacent to the bottom to the height of the cooling slit at the output from it is equal or smaller then 1,5. ^ EFFECT: increases operational reliability of the heating tube due to excluding the possibility of forming in the air layer near the wall of increased turbulence. |
