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:
Jan. 30, 1979
Filed:
Jun. 08, 1976
Takuya Sasaki, Hitachi, JP;
Tamotsu Yamane, Hitachi, JP;
Yoshun Horibe, Hitachi, JP;
Mituo Suzuki, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The feedwater heater of this invention comprises a plurality of heating tubes arranged in U form, with feedwater being passed therethrough, a feedwater inlet chamber having a feedwater inlet for introducing feedwater thereinto and a tube plate assembling the ends of said heating tubes and also having formed therein a feedwater reservoir, a feedwater outlet chamber having a feedwater outlet for discharging the heated feedwater and a tube plate assembling the other ends of said heating tubes and also having formed therein a feedwater reservoir, a first cylindrical body or shell having disposed therein a tube nest consisting of the U-formed heating tube portions positioned on one side as well as support plates holding said heating tubes in position, said cylindrical body having its one end communicated with said feedwater outlet chamber and also provided with a hot steam inlet for introducing hot steam that serves as the feedwater heating source, a second cylndrical body or shell having disposed therein a tube nest consisting of the U-formed heating tube portions positioned on the other side as well as support plates holding said heating tubes in position, said second cylindrical body having its one end communicated with said feedwater inlet chamber and provided with a condensate outlet for discharging the steam condensate out of the system, and a spherical container formed from two hemispherical shells communicated with said both cylindrical bodies and having therein a space housing the bent portions of said U-formed heating tubes.