STEAM GENERATOR Russian patent published in 2014 - IPC F22B1/18 

FIELD: power engineering.

SUBSTANCE: invention relates to power engineering and may be used in straight flow steam generators. A steam generator comprises a heat exchanger, liquid and steam headers. A heat exchanger comprises several heat exchange units of identical design. The heat exchange unit comprises a bundle of spiral heat transfer tubes, a central cylinder and sleeves. Spiral heat transfer tubes, having different radius of rounding, are placed along the concentric spiral in the annular space between the central cylinder and the sleeve, forming one or several heat exchange columns. One outlet of the liquid header is connected to the main pipeline for water supply, and the second outlet of the liquid header is connected to the bundle of spiral heat transfer pipes. One outlet of the steam header is connected to the main steam pipeline, and the second outlet of the steam header is connected to the bundle of spiral heat transfer pipes. Inside the part of the connection with the liquid header each spiral heat transfer tube is equipped with a fixed and detachable diaphragm.

EFFECT: improved design.

7 cl, 6 dwg