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. 16, 1984
Filed:
Jun. 30, 1981
Katsumoto Otake, Hitachi, JP;
Masahiko Miyai, Mito, JP;
Takuya Sasaki, Hitachi, JP;
Yasuteru Mukai, Hitachi, JP;
Sankichi Takahashi, Hitachi, JP;
Isao Okouchi, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A method and system for cleaning cooling tubes of a heat transfer unit including a steam chamber through which the cooling tubes extend and into which steam generated in a steam power generating plant is introduced so as to exchange heat with a cooling water flowing through the cooling tubes. Cleaning bodies are introduced into the cooling water and then distributed to the cooling tubes so as to clean the latter. The cooling tubes are divided into a plurality of groups, with each group including a plurality of the cooling tubes having the same trends of cleanliness. The cleaning bodies are respectively introduced to the groups in respective quantities suitable for cleaning the cooling tubes of each group in dependence upon the particular degree of cleanliness of the cooling tubes of the respective groups.