Insert for a condenser tube
AssigneeEnsign Plastics, Limited
InventorsAlan Banner, Frank Banner
Life of this patent
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Abstract
An insert for condenser tubes of the heat exchanger includes steps or other means to restrict movement of the boundary layer of liquid through the tubes or to remove the energy of that boundary layer.
Claims11
A tubular insert disposed in a condenser tube and composed of a swellable plastics material swollen into gripping relationship within the condenser tube, said insert having a restrictive throat adjacent to its upstream end and step means adjacent to its downstream end to restrict axial movement of the boundary layer of liquid therepast and to remove energy from the boundary layer, thereby reducing erosion of the condenser tube adjacent thereto and downstream thereof.
An insert for a condenser tube comprising a tube of water-swellable plastics material to allow the tube, once inserted in the condenser tube, to swell and grip the condenser tube said insert having, adjacent its upstream end, a restricted throat, the inner surface between the throat and the downstream end of the insert including means, comprising a roughened inside surface, to restrict axial movement of the boundary layer of liquid through the tube and to remove energy from that boundary layer whereby erosion of the condenser tube will be reduced.
In a heat exchanger having a fluid-conducting condenser tube and a tubular inset expanded into gripping relationship within an upstream end of said condenser tube, the improvement comprising
- means positioned at a downstream end of said insert to restrict axial movement of the boundary layer of liquid therepast and to remove energy from the boundary layer for reducing erosion of the condenser tube adjacent thereto and downstream thereof.
Dependencies are inferred from the claim text.