FIELD: technological processes.
SUBSTANCE: invention may be used in modernisation of horizontal machines of air cooling with heat exchanging sections that have welded undetachable chambers of rectangular shape. In the back wall chambers form at least one window for access to internal surface of pipes and their cleaning from the products that have been accumulated in the process of air cooling machines operation. The window has circular shape or shape of two circles joined to each other. Centre of circle coincides with axis of one of the openings of tubular grid. Centres of two circles coincide with axes of corresponding openings of tubular grid. Mentioned windows are covered with shields with sealing gaskets made of soft metal or soft nonmetal gasket material. Shields are fixed with the help of threaded plugs that are installed in the openings of back wall, which are closer to the shields.
EFFECT: increase of servicing convenience and machines reliability and increase of service life.
4 cl, 2 dwg
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