| 摘要 |
The specification describes a fluid flow apparatus and, in particular, fluid flowmeters, fluid mixers and fluid dispersing devices. The apparatus is best illustrated by referring first to FIG. 5 and to the fluid flowmeter.which is, indicated generally at 10. The fluid flowmeter is adapted to be installed in a pipeline or other fluid flow conduit. The conduit is depicted as being comprised of pipe sections 12 having bolting flanges 14 at their ends. The flowmeter 10 is comprised of a meter body 20 and a fluid flow displacement device 40 mounted coaxially within the body. The meter body 20 comprises, in essence, a section of pipe or conduit adapted to be bolted or otherwise secured between two sections of pipe, for example, between the flanges 14 of the illustrated pipe sections 12. The meter body is preferably of the so-called wafer design and is simply confined between the flanges 14 and centered or axially aligned with the pipe sections 12 by means of circumferentially spaced bolts 16 (only one shown) extending between and interconnecting the flanges. The body section 20 has an internal bore or through hole 22 which in use comprises a part of, and constitutes a continuation of the path of fluid flow through, the pipe line 12. As indicated by the arrow, the direction of fluid flow is from left to right as viewed in the drawings. The pipe line 12 and conduit section 20 are usually cylindrical and the bore 22 is usually, though not always, of the same internal cross section and size as the pipe sections 12. Longitudinally spaced pressure taps 24 and 26 extend radially through the wall of the body 20.
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