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US 8,782,888 B2Granted
Method for repairing plate heat exchangers
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorsBernard Saulnier, Jean-Pierre Tranier, François Fuentes, Sophie Deschodt
Life of this patent
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Abstract
A method for repairing a plate heat exchanger of the type comprising a plurality of plates which, together with side bars arranged on the plates, define fluid flow paths is presented.
Claims7
A method for repairing a plate heat exchanger of the type comprising a plurality of plates which, together with side bars arranged on the plates, define fluid flow paths, one of which paths has a leak to an adjacent path, the method comprising at least the following successive steps:
- isolating the two adjacent paths;
- and
- injecting an injection fluid at a pressure of between 0.5 bar and 1.5 bar into the two adjacent paths,
- wherein the two adjacent paths are isolated from the remainder of the heat exchanger such that the injection fluid is within only the two adjacent paths during operation.
1 more element
Dependencies are inferred from the claim text.