Flowmeter
AssigneeSIKA Dr. Siebert & Kühn GmbH & Co. KG
InventorsStefan Zander, Sergius Schmidt, Bastian Bleichert
Life of this patent
Estimating the term…
Abstract
A flowmeter for measuring the flow rate of a fluid has a measuring tube which forms a measurement space through which the fluid can flow. At least one disruptive body is arranged in the measurement space. The measurement space additionally has, downstream of the disruptive body, a pickup arranged in it that can be deflected based on a vortex formation at the disruptive body. In order to minimize the flow resistance for the fluid when flowing through the flowmeter, the measuring tube has an elliptical cross-section at least in the region of the arrangement of the disruptive body.
Claims18
A flowmeter for measuring the flow rate of a fluid, comprising:
- a measuring tube that forms a measuring space through which the fluid can flow;
- at least one baffle arranged in the measuring space;
- and
- a measured value sensor arranged downstream of the baffle in the measuring space, the measured value sensor being deflectable when flowed around by the fluid due to a vortex formation at the baffle;
- wherein the measuring tube has an elliptical cross-section at least in a region of the arrangement of the baffle;
- wherein the baffle has a baffle axis along which the baffle extends, with the baffle axis being aligned perpendicular to a flow axis extending through the measuring space and/or with the baffle having a round, elliptical, streamlined, trapezoidal, or triangular cross-section;
- wherein the elliptical cross-section of the measuring tube is spanned by a longer main axis and a shorter secondary axis extending transversely to the main axis, with the elliptical cross-section of the measuring tube being aligned such that the secondary axis coincides with the baffle axis;
- and
- wherein a circular cross-section of a fluid inlet and/or of a fluid outlet has a diameter dimension that corresponds to a length of the main axis of the elliptical cross-section of the measuring tube and/or so that a width of the measuring space remains constant transversely from the baffle axis from the fluid inlet up to the fluid outlet.
A flowmeter for measuring the flow rate of a fluid, comprising:
- a measuring tube that forms a measuring space through which the fluid can flow;
- at least one baffle arranged in the measuring space;
- and
- a measured value sensor arranged downstream of the baffle in the measuring space, the measured value sensor being deflectable when flowed around by the fluid due to a vortex formation at the baffle;
- wherein the measuring tube has an elliptical cross-section at least in a region of the arrangement of the baffle;
- wherein the baffle has a baffle axis along which the baffle extends, with the baffle axis being aligned perpendicular to a flow axis extending through the measuring space and/or with the baffle having a round, elliptical, streamlined, trapezoidal, or triangular cross-section;
- wherein the elliptical cross-section of the measuring tube is spanned by a longer main axis and a shorter secondary axis extending transversely to the main axis, with the elliptical cross-section of the measuring tube being aligned such that the secondary axis coincides with the baffle axis;
- and
- wherein a length ratio from the main axis to the secondary axis has a value from 1.1 to 2.0.
Dependencies are inferred from the claim text.