Feed water preheater
AssigneeBBC Brown, Boveri & Company, Limited
InventorsHelmut V. Lang, Son LeMong
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Abstract
In a feed water preheater of horizontal type with an integrated desuperheater, the last deflection chamber of the desuperheater is provided with lateral steam outlet ports (13). As a result, the desuperheated steam does not reach the condensation zone directly as hitherto by passing into the free cross-section of the tube bundle but, instead, it passes into the free space surrounding the condensation bundle (2) on which it can then act from the outside inwards at minimum flow velocity.
Claims4
A feed water preheater of horizontal type provided with a steam shell and a built-in desuperheater, the preheater including a sheet metal casing and a baffle arrangement which divides said casing into deflection chambers in which steam flows across desuperheater bundles to be desuperheated prior to introduction of the steam into a condensation zone defined by a bundle of condensate tubes the improvement comprising, steam outlet ports provided in one of the deflection chambers and extending over the entire chamber length along sides of the sheet metal casing.
Dependencies are inferred from the claim text.