| 摘要 |
FIELD: heat engineering, particularly air inlet and outlet headers for exhaust gas heat recovery devices, particularly for devices to heat air with exhaust combustion products from compressor of gas-turbine plant used in gas-transfer devices for compressor stations of gas main pipelines. ^ SUBSTANCE: method involves cutting metal sheets into case blanks; folding and welding the blanks to create header body preferably having cylindrical shape; cutting orifice for tube plate installation into the case, wherein orifice edges define contour of cylindrical rectangle having height of 0.72-0.95 of header height in heat-exchanging unit and with angular width equal to 0.07-0.25 of header case cross-sectional perimeter; cutting out tube plate; beveling thereof and forming orifices in the tube plate, wherein summary orifice area is equal to 0.52-0.81 of total tube plate area; welding tube plate to above header case orifice edges so that orifice edges are arranged within the bounds of tube plate contacting the edges. ^ EFFECT: increased manufacturability, reduced metal consumption along with improved structural rigidity thereof, simplified production and decreased labor inputs. ^ 13 cl, 5 dwg |
