EXPANSION JOINT Russian patent published in 2010 - IPC F22B37/42 

FIELD: heating systems.

SUBSTANCE: invention is intended for being used as device for compensation of volume expansions at thermal impact on liquid-metal heat carrier in sectional steam generators. Essence of invention consists in the fact that expansion joint containing housing with lower liquid-metal heat carrier supply and discharge nozzles and upper gaseous medium discharge nozzles, separation shells and gas outlet hoods located in housing, the former of which are installed under the latter and connected in lower part to heat carrier supply nozzles, and in upper part - to cavity of housing. Housing is equipped with corrugated plates and partitions, the former of which are located under gas outlet hoods and connected at the joint to separation shells; at that, plates are attached to housing with their partitions located between hoods so that gas cavities are formed; the latter are installed in the area of heat carrier outlet nozzle and attached to housing so that chambers are formed, in which there located are jet injectors interconnected with liquid-metal heat carrier supply and discharge nozzles and with gas cavities. Such design of expansion joint provides the possibility of performing damper compensation of volume expansions of heat carrier and allows reducing propagation of metal dust deposited on heat carrier path surfaces.

EFFECT: improving operating reliability of the design.

2 dwg