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. 11, 1977
Filed:
Jan. 23, 1975
Gundolf E Rajakovics, Vienna, OE;
Vereinigte Edelstahlwerke Aktiengesellschaft, Vienna, OE;
Abstract
A float valve arrangement is disposed in a mixing condenser that is arranged intermediate the first and second stage of a two-stage evaporation installation suitable for purifying radio-active liquids. In normal operation, vapor evaporated in the first stage extends via a first conduit into the mixing condenser where such vapor is condensed by contact with a portion of the liquid in the second stage that is circulated back to the mixing condenser via a pump. The normal vapor pressure generated in the first stage keeps the float valve open and permits the steam to displace, into the second stage, liquid present in the mixing condenser. During start-up and shutdown of the installation wherein vapor from the first stage is no longer present, the resulting rise in liquid level in the mixing condenser causes the float valve to close and to prevent any backflow of liquid into the first stage via the first conduit.