Fastening system for magnetic flowmeter liner
AssigneeRosemount Inc.
InventorsMichael Mikolichek, Steven Bruce Rogers
Life of this patent
Estimating the term…
Abstract
A magnetic flowmeter sensor includes two sensor faces, a conduit, a liner lining the conduit, and mechanical fasteners. The sensor faces are on each end of the sensor for connecting the sensor to the process fluid flow. The conduit connects the two sensor faces for conducting the process fluid flow through the sensor. The liner extends across at least a portion of each sensor face at each end of the flowmeter sensor to form a planar sealing surface on each end of the sensor. The liner includes holes through which the mechanical fasteners pass to mechanically attach the liner to the flowmeter sensor to prevent shifting of the liner. The mechanical fasteners do not extend beyond the planar sealing surfaces.
Claims25
A magnetic flowmeter sensor for detecting a flow rate of a process fluid flow, the sensor comprising:
- two sensor faces, one on each end of the sensor for connecting the sensor to the process fluid flow;
- a conduit connecting the two sensor faces for conducting the process fluid flow through the sensor;
- a liner lining the conduit for preventing physical contact between the process fluid flow and the conduit;
- the liner extending the full length of the conduit, and extending across at least a portion of each sensor face at each end of the sensor to form a planar sealing surface at each end of the sensor;
- the liner on each end including a plurality of holes;
- and
- a plurality of mechanical fasteners passing through the plurality of holes to mechanically attach the liner on each end of the sensor to the flowmeter sensor to prevent shifting of the liner, wherein the plurality of mechanical fasteners do not extend beyond the planar sealing surface at each end of the sensor.
A magnetic flowmeter system for measuring a flow rate of a process fluid flow and transmitting the measured flow rate to a control or monitoring system, the flowmeter system comprising:
- a process transmitter for communicating with the control or monitoring system;
- and
- a magnetic flowmeter sensor electrically connected to the process transmitter to provide a signal representative of a detected flow rate of the process fluid flow, the magnetic flowmeter sensor comprising:
- two sensor faces, one on each end of the sensor for connecting the sensor to the process fluid flow;
- a conduit connecting the two sensor faces for conducting the process fluid flow through the sensor;
- a liner lining the conduit for preventing physical contact between the process fluid flow and the conduit;
- the liner extending the full length of the conduit, and extending across at least a portion of each sensor face at each end of the sensor to form a planar sealing surface at each end of the sensor;
- the liner on each end including a plurality of holes;
- and
- a plurality of mechanical fasteners passing through the plurality of holes to mechanically attach the liner on each end of the sensor to the flowmeter sensor to prevent shifting of the liner, wherein the plurality of mechanical fasteners do not extend beyond the planar sealing surface at each end of the sensor.
A method for preventing shifting of a liner lining a conduit of a magnetic flowmeter sensor while extending the liner across each of two sensor faces at opposite ends of the flowmeter sensor to create a planar sealing surface at each end of the flowmeter sensor comprises:
- inserting the liner into the conduit;
- flaring the liner on to the sensor faces of the flowmeter sensor;
- inserting a mechanical fastener into each of a plurality of holes in the flared liner;
- and
- attaching each of the inserted mechanical fasteners to the flowmeter sensor such that the plurality of mechanical fasteners do not extend beyond the planar sealing surface at each end of the flowmeter sensor.
Dependencies are inferred from the claim text.