초록 ▼

A rigid central manifold block defines a coaxial inlet and outlet of the flowmeter and supports at least one continuous conduit loop substantially encircling the block and having its inlet and outlet ends closely spaced and rigidly connected to the block. Preferably, the loop includes a straight sec

A rigid central manifold block defines a coaxial inlet and outlet of the flowmeter and supports at least one continuous conduit loop substantially encircling the block and having its inlet and outlet ends closely spaced and rigidly connected to the block. Preferably, the loop includes a straight section perpendicular to the inlet and outlet ends. Dual drive means are preferably provided for oscillating the straight section back and forth about its perpendicular bisector and complementary position detectors employed at or near the opposite ends of the straight section, preferably at the same location as the drive units, provide readouts which are combined algebraically and synchronously demodulated to yield a Coriolis-related output indicative of mass flow. Preferably, a second loop, identical and parallel to the first, is supported by the same block. The block is channeled to serve as a manifold and interchangeable manifolds are disclosed for series and parallel flow through the two loops, respectively. The plane of the loop or loops can be oriented perpendicular or parallel (in line) to the process line.

대표청구항 ▼

A Coriolis-type mass flowmeter for measuring mass flow in a pipeline, comprising a massive single stationary manifold block with an inlet and an outlet adapted to be connected to the pipeline, the bulk of said block being interposed substantially between said inlet and outlet, a dual loop assembly i

A Coriolis-type mass flowmeter for measuring mass flow in a pipeline, comprising a massive single stationary manifold block with an inlet and an outlet adapted to be connected to the pipeline, the bulk of said block being interposed substantially between said inlet and outlet, a dual loop assembly including two substantially identical parallel continuous conduit loops, each having its inlet and outlet ends rigidly connected in proximity to each other directly to said block such that said loops are freely suspended therefrom and exhibit matching inherent vibrational resonances, each loop extending around said block so as to substantially encircle said block, integral channels defined within said block for communicating the inlet and outlet of the block to the inlets and outlets of the loops, respectively, drive means for oscillating said loops 180 degrees out of phase with each other in a manner which establishes oscillation of a portion of each loop about a node arising along the vibrating length of each respective loop, and means arranged on the oscillating portions of said loops for sensing the effect of Coriolis forces arising from mass flow in the oscillating loops.