WATER-TUBE SUPERCHARGER FOR CLEANING HEAT-TRANSFER AGENTS INCLUDING HEAT-TRANSFER SURFACES OF FURNACE Russian patent published in 2004 - IPC

FIELD: cleaning heat-transfer agents including heat-transfer surfaces of steam boiler furnaces. SUBSTANCE: supercharger has its nozzle tube neck secured through front cardan joint in peephole or in water-wall setting channel and through rear part of blowing tube and is installed in guide for vertical displacement through height and for horizontal movement on known linear displacement block with aid of rear cardan joint whose internal part is, essentially, sleeve-shaped guide accommodating nozzle tube mounted therein for axial displacement; nozzle tube has nozzle and nozzle head; novelty is that known horizontally movable and heightwise shifted linear displacement block separately controlled from servo motors with coordinate converter is capable of moving with aid of cross support on vertical linear displacement block secured by means of auxiliary frame and two fastening brackets on boiler wall; rear cardan joint installed on vertical linear displacement block is made in the form of enclosed twin frame structure whose external frame is joined at its top part through intermediate member by means of two flanges to projections on vertical linear displacement block; mentioned flange has depression to receive bolt so as top and bottom points of revolution are formed; bolt is secured through other intermediate member in internal frame of twin frame structure; secured in center of the latter by means of transversal bolt is guide with connecting members provided on its both ends to receive respective corrugated membrane; disposed between nozzle head and front cardan joint is connecting member having conical expansion at nozzle head seating to receive nozzle, crown-shaped bulge to fit this expansion is provided in internal part of front cardan joint, and distribution ring with depressions is fitted onto front part of nozzle head and joined to the latter best by means of threaded joint. Proposed supercharged that functions to prevent fouling of nozzle head is easily shipped in disassembled condition and easily reassembled and repaired. EFFECT: reduced cost, enhanced precision of control and blowing pattern reproduction; enhanced cooling efficiency of nozzle head. 7 cl, 10 dwg