Flow tube liner
First Claim
1. A magnetic flowmeter comprisinga tube having an inner surface defining a passage for carrying fluid along a longitudinal axis, the tube having faces transverse to the longitudinal axis and disposed at opposite upstream and downstream ends of the tube, at least one face having a recess spaced from the inner surface so that a portion of the face lies between the recess and the inner surface, anda liner disposed on the inner surface of the tube, the liner extending out from an end of the tube and into the recess on the face to anchor the liner in place.
5 Assignments
0 Petitions
Accused Products
Abstract
A magnetic flowmeter has a tube for carrying fluid along a longitudinal axis. The tube has faces transverse to the longitudinal axis and disposed at opposite ends of the tube. A liner on the inner surface of the tube extends out from an end of the tube and into a recess on one face to anchor the liner in place.
71 Citations
28 Claims
-
1. A magnetic flowmeter comprising
a tube having an inner surface defining a passage for carrying fluid along a longitudinal axis, the tube having faces transverse to the longitudinal axis and disposed at opposite upstream and downstream ends of the tube, at least one face having a recess spaced from the inner surface so that a portion of the face lies between the recess and the inner surface, and a liner disposed on the inner surface of the tube, the liner extending out from an end of the tube and into the recess on the face to anchor the liner in place.
-
10. An electromagnetic flowmeter, comprising
a tube for carrying fluid along a longitudinal axis, an aperture in a surface of the tube for allowing an electrode to be inserted into the tube in a direction transverse to the longitudinal axis of the tube, a liner disposed on an inner surface of the tube, the liner comprising a plastic layer and a metal grid embedded in the plastic layer, the plastic layer and the metal grid having holes aligned with the aperture in the tube, the hole in the grid being larger than the hole in the plastic layer so that a portion of the liner near the aperture has no embedded grid, wherein the grid comprises a metal perforated cylinder having a spiral welding seam, a button electrode inserted through the aperture and holes in the metal grid and plastic layer, the button electrode holding the portion of the liner against the tube.
-
20. An electromagnetic flowmeter comprising
a tube for carrying fluid, a liner disposed on an inner surface of the tube, the liner comprising a layer of material, and a perforated cylindrical metal grid embedded in the layer, the grid having holes in its surface, wherein lines connecting a center of each of three adjoining holes form a substantially equilateral triangle.
-
28. An electromagnetic flowmeter comprising
a tube for carrying fluid, a liner disposed on an inner surface of the tube, the liner comprising a layer of material, a perforated cylindrical metal grid embedded in the layer, the grid having holes in its surface, and a wire disposed on an outside surface of the grid and along a longitudinal axis of the grid, the wire providing a constant spacing between the grid and the inner surface of the tube.
Specification