FIELD: heating systems.
SUBSTANCE: invention refers to heat engineering. In horizontal-type system water heaters, instead of lens expansion joint being used at the present moment, there offered is plate expansion joint of thermal stresses for horizontal-type system water heaters in the form of annular plate; at that, it is built in tube sheet; annular plate is of variable thickness; at that, the latter is obtained by means of annular slot turned in tube sheet or by thinning its edge.
EFFECT: increasing operational life of expansion joint, possible partial compensation of thermal elongations; simple design; decrease of stresses in tube sheet.
2 dwg
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