FIELD: heating exchange.
SUBSTANCE: invention relates to heat engineering and can be used in design of tubular heat exchangers. According to the first embodiment, the heat exchanger comprises housing 10, heat exchange tubes 1 forming modules, tubular headers 2 of the first level and tubular headers 5 of the second level, which are arranged in housing 10. Heat-exchange tubes 1 of each module are connected by their ends to holes in side walls of corresponding tubular headers 2 of the first level. Latter form modules, and tubular headers 2 of each module are connected to corresponding tubular collectors 5 of the second level. Housing 10 is provided with working medium inlet and outlet devices. Tubular collectors 5 of the second level are connected by their ends to specified devices, and tubular headers 2 of each module of the first level are connected directly with their ends to holes in side wall of corresponding tubular collector 5 of the second level. According to the second embodiment, the heat exchanger further includes tubular headers 5 of the second level. Tube tubular collectors 2 of the first level form modules, and collectors 2 of each module are connected to corresponding collectors 5 of the second level through side holes in walls of the latter.
EFFECT: technical result is higher reliability and strength of device at high and ultrahigh pressures, resistance to temperature expansion, reduced metal consumption and labour intensity.
12 cl, 6 dwg
