PREFORMED NOZZLE FOR HEAT-MASS EXCHANGE APPARATUSES Russian patent published in 2004 - IPC

FIELD: natural gas and petrochemical industries. SUBSTANCE: the invention is dealt with a preformed nozzle for heat-mass exchange apparatuses. The preformed nozzles may be used in natural gas industry, petrochemical industry and other branches of industry at realization of the heat-mass exchange processes in the gas (steam)-liquid heat-mass exchange systems. The nozzle contains a pack of sheets with protrusions. The pack is made in the form of the flexible cord and protrusions are located at an angle to a vertical with a shift to each other and directed to surfaces of the sheets facing each other in crossed over directions. Protrusions are made from one and the same cord. The cord in places of the protrusions connections is flat and fixed in turn to the upper and lower parts of a sheet. Fixation of the flexible cord to a sheet is made by a contact welding with provision of its pressing to a sheet plane or providing the sheets with cuts, in the bent slits off which the flexible cord is inserted, and pressure and fixation of the cord is carried out at leveling the cuts in plane of the sheet. EFFECT: the invention ensures decrease of labor input at manufacture of a nozzle due to simplification of its design. 4 cl, 6 dwg