FIELD: power engineering, in particular, devices for utilization of heat of gases exhausted by devices primarily for heating air by exhausted combustion products, coming from compressor of gas turbine plant of gas flow apparatus at compressor stations of main gas pipelines.
SUBSTANCE: heat-exchange block of regenerative air heater, preferably block-sectioned, has body consisting of spatial frame, bottom, upper lid and end walls, collectors for injection and drainage of heated substance with pipe boards and multi-route multi-row bank of heat-exchange pipes, forming appropriately in each row an even number of rectilinear multi-pipe branches, including at least two internal and two external ones, joined in portions by bends of primarily similar radius for all pipes, while bottom, lid and one of end walls of block body are made in form of panels with casing of rigidity elements, forming flat rod systems, and spatial frame of block is formed by additional set of flat rod systems of frames of noted panels with intermediate posts connecting them and with bodies of collectors for injection and drainage of heated substance rigidly connected to them, which in turn are connected to bottom of block and to each other by two-ring diaphragms and displacer of inter-pipe environment, while portions of bodies of collectors for injection and drainage of heated substance with built-in pipe boards and inter-pipe environment displacer form together additional spatially developed rigid end wall of block body, and along longitudinal sides, frame is made with possible holding of respectively elements of diffuser and convergent tube for injection and drainage of cooled down substance, while cross section area of each collector is about 1,8-3,5 of total area of through section of heat-exchange pipes in the block.
EFFECT: higher efficiency of heat exchange while decreasing metal cost of regenerating air heater.
9 cl, 8 dwg
