Balance bar having a reduced axial thermal stress resulting from high temperature manufacturing methods
AssigneeMicro Motion, Inc.
InventorsCraig Brainerd Van Cleve, Theodore L. Bertchie
Life of this patent
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AssigneeMicro Motion, Inc.
InventorsCraig Brainerd Van Cleve, Theodore L. Bertchie
Estimating the term…
A manufacturing process that prevents stress between a titanium flow tube and a surrounding steel balance bar due to a brazing operation. A straight tube Coriolis flowmeter having a titanium flow tube is surrounded by a balance bar having separate longitudinal halves. The balance bar halves are connected to each other by an elongated side channel on each side of the balance bar halves. The elongated side channels are radially spaced apart from the balance bar halves but connected to the balance bar halves by means of tubular pegs which extend into holes in the side channels. The flow tube is joined by brazing via connecting rings to the balance bar halves and to an inner end of the pegs. The radially outer end of the pegs are inserted into the holes in the side channels and welded. Circular welds and slots in the side channels reduce axial shrinkage of the side channels as the welds cool. This prevents axial stress on the flow tube.
A Coriolis flow meter adapted to be connected to a system having a material flow, said Coriolis flow meter having a balance bar and a flow tube adapted to be vibrated in a drive plane in phase opposition to generate Coriolis deflections of said vibrating flow tube with material flow;
Dependencies are inferred from the claim text.