METHOD AND CONFIGURATION FOR REDUCTION OF FATIGUE IN STEAM DRUMS Russian patent published in 2016 - IPC F22B37/22 

FIELD: energy.

SUBSTANCE: invention can be used in heat recovery steam generators, having a plurality of steam drums, operating at same pressure. Heat recovery steam generator comprises multiple generating tubes containing water for steam generation, an ascending pipe, communicated with multiple generating pipes, first steam drum to receive collected water and steam from ascending pipe; second steam drum directly communicated with first steam drum, steam separator located in second steam drum, steam flow outlet located in second steam drum, outlet of steam flow is designed to discharge separated steam from second steam drum. According to second version, steam generator comprises first and second ascending pipes, connected with multiple generating tubes to collect steam and water passing through a plurality of pipes, wherein first ascending pipe provides first part of collected steam and water in first steam drum, and second ascending pipe provides second part of collected steam and water in second steam drum for generation of second steam flow.

EFFECT: use of several steam drum, which operate at same pressure, allows to reduce wall thickness of drum, thus maintaining pressure and volume.

20 cl, 4 dwg