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:
Apr. 07, 1998
Filed:
Jun. 20, 1994
Wolfgang Kastner, Herzogenaurach, DE;
Wolfgang Kohler, Kalchreuth, DE;
Eberhard Wittchow, Erlangen, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
In once-through flow steam generators including a burner for fossil fuels and having a vertical gas flue with essentially vertically disposed tubes, inlet ends of the tubes are connected to an inlet header and outlet ends of the tubes are connected to an outlet header. According to the invention, a pressure-equalization tube branches off from each tube at the same height. The tube is connected to a pressure-equalization vessel. The height H is chosen in such a way that in the case of an individual tube being more strongly heated between the inlet header and the branching-off point of the pressure-equalization tube, the mass flow through the individual tube increases as compared to a mean value of the heating of all of the tubes.