STEAM GENERATOR Russian patent published in 2010 - IPC F22B1/06 

FIELD: heating.

SUBSTANCE: invention is intended for steam generation and is to find application at nuclear power plants. Steam generator includes a bundle of heat exchange tubes with economiser, evaporator and superheater sections, which is arranged in the housing and fixed in tube sheets. At the boundary of economiser and evaporator sections, at the height of "liquid-steam" boundary line there made is tube sheet which is rigidly attached to the housing, and throughout that tube sheet the above heat exchange tubes are passed. Heat exchange tubes have reducers connected to the tube sheet so that heat exchange surfaces can be replaced.

EFFECT: invention provides compensation of tube bundle relative to the housing, excludes temperature pulsation on the wall of each tube at the end of economiser portion of evaporator section.

2 dwg