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:
Jun. 06, 2023
Filed:
Sep. 27, 2021
Flowserve Management Company, Irving, TX (US);
Paul Jeffrey Parish, Spanish Fork, UT (US);
Michael P. Nelson, Lehi, UT (US);
Flowserve Pte. Ltd., Singapore, SG;
Abstract
An apparatus for measuring a pressure of a corrosive or high temperature process liquid includes a pressure sensor in communication with the process liquid via a vertical tube. A buffer gas injected into the vertical tube forms a liquid/gas interface at a desired height. The buffer gas supply is then either isolated or regulated so as to cause the buffer gas pressure within the vertical tube to remain equal with the process liquid pressure. The pressure sensor indirectly measures the process liquid pressure by measuring the buffer gas pressure within the vertical tube, while remaining chemically and thermally protected from the process liquid. In embodiments, pressure measurements from a pair of gas buffered pressure sensors located upstream and downstream of a valve are combined with measurements of the process liquid temperature to determine a flow rate of the process liquid through the valve.