The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 07, 1980
Filed:
Aug. 11, 1977
Masahiro Furukawa, Hitachi, JP;
Tamotsu Yamane, Hitachi, JP;
Hitachi, Ltd., , JP;
Abstract
A multitubular heat exchanger mainly used in thermal and nuclear power plants having a plurality of tube bundles located within a shell and including a large number of U-shaped heat transfer tubes for permitting a medium to be heated to flow therethrough, and a vent tube interposed between the tube bundles and arranged in the longitudinal direction of the shell, further includes at least one flow guide plate with or without at least one slit disposed in or near the outer marginal portion of one of the tube bundles for inducing streams of a heating medium to flow toward the vent tube. The provision of the guide plate with or without the slit has the effect of moving a heating medium stagnating zone, which has hitherto been located in one of the tube bundles, to a position which is in the vicinity of the vent tube to thereby prevent corrosion of the heat transfer tubes by noncondensable gas.