METHOD FOR REPAIR OF TUBE SHEETS OF HEAT EXCHANGERS Russian patent published in 2021 - IPC B05D7/22 B05D1/28 B05C7/08 F28F19/02 

FIELD: thermal engineering.

SUBSTANCE: invention relates to a method for repairing the tube sheets of heat exchangers, consisting in the fact that a compound is introduced into the inter-tube space of the heat exchanger at a temperature below its curing temperature, heating is carried out with a temperature equal to or exceeding the curing temperature, the heating temperature is maintained at least until the formation of a film of the cured compound on the surface, the uncured compound is removed from the circuit, characterized in that before the introduction of the compound, the side of the heat exchanger opposite to the first tube sheet is raised, on which the coating is applied, at the angle set for specific operating conditions and design features of the heat exchanger; the amount of liquid compound injected into the inter-tube space is preliminarily calculated depending on the angle of elevation and the minimum required volume for coating formation on the inner sides of the tube sheets; after coating formation on the first sheet, the heat exchanger is returned to its original position and the coating operations on the second tube sheet are repeated.

EFFECT: use of the proposed method makes it possible to eliminate defects in the repair of the interface sections of tube sheets and tubes of heat exchangers.

1 cl, 2 dwg