FIELD: power engineering industry, particularly to dry heat-exchanging unit of heat exchanger, for instance of regenerative air heater type.
SUBSTANCE: drying stand comprises rack adapted to receive upper or intermediate or lower unit provided with standard supports. The lower unit has case extending along the full post height, heat-exchanging pipe bundle, air inlet and outlet heads. Drying stand also has a set of technological caps for temporary sealing ends of air inlet and outlet heads, device to supply drying agent in the heads and pipes of the bundle. The device comprises at least one fan and air duct communicated with the fan by the first end thereof. Another air duct end is mainly connected with upper end of air inlet and outlet heads so that the heads may be brought into communication with air duct though one technological cap having corresponding orifice. At least one more technological cap of the set has orifice and/or valve to open drying agent flow from air outlet head. The rack is made as three-dimensional supporting system consisted of at least one pair of longitudinal flat rod structures spaced a distance equal to unit width and at least two transversal ones. Each transversal structure is made as flat truss with upper horizontal support belt. The horizontal structures are spaced inside the rack and support the unit in points between intermediate posts of case thereof. The drying stand may also has technological caps to temporary seal ends of heads connected to upper or intermediate or lower unit provided with standard supports, device to supply drying agent, particularly air, in air inlet and outlet heads and pipes of heat-exchanging unit installed on laying-off floor and provided with case having intermediate posts, including lower unit of heat-exchanger additionally having standard supports. The unit rests upon the laying-off floor so that lower ends of air inlet and outlet heads are located above the laying-off floor to provide technological cap installation. Height of head location is not less than that of standard support connected to lower unit of heat-exchanger.
EFFECT: increased economy and reduced labor inputs and material consumption.
20 cl, 9 dwg
