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:
Jul. 13, 1993
Filed:
Nov. 04, 1991
William H Vander Heyden, Mequon, WI (US);
Badger Meter, Inc., Milwaukee, WI (US);
Abstract
A method and apparatus for monitoring in real time the mass and energy flow rate of a gas through a pipeline. The invention determines the ratio of the mass flow rate of pipeline gas flowing through a pipeline compared to the mass flow rate of sample gas tapped from the pipeline line. The invention involves tapping sample gas from the pipeline and flowing the sample gas to a capillary tube or a similar device for creating a pressure differential in a small flow. The sample gas is maintained at substantially the same temperature as the gas in the pipeline while the sample gas is in the capillary tube. The sample gas flows through the capillary tube continuously as controlled by a flow controller at a rate that is independent of the pipeline gas flow rate. A differential pressure cell measures the pressure differential of the sample gas across the capillary tube and also measures the pressure differential of the pipeline gas across an orifice in the pipeline. The mass flow ratio of the pipeline gas flowing through the pipeline to the sample gas flowing through the capillary tube is computed using the pressure differentials measured by the differential pressure cell. The energy content of the pipeline gas is determined by measuring the energy content of the sample gas and relating that value to the mass flow ratio of the pipeline gas compared to the sample gas. If the sample gas is a saturated hydrocarbon and is burned with air at maximum flame temperature, the energy content of the pipeline gas stream is mathematically related to the mass flow rate of the air and the mass flow ratio of the pipeline gas compared to the sample gas.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile