| 摘要 |
<p>PCT No. PCT/GB92/02072 Sec. 371 Date Jul. 6, 1994 Sec. 102(e) Date Jul. 6, 1994 PCT Filed Nov. 10, 1992 PCT Pub. No. WO93/10439 PCT Pub. Date May 27, 1993.A metering device for multiphase fluid, for example, crude oil, comprises a gamma or X-ray densitometer incorporating windows for the metering radiation of boron carbide. The boron carbide windows can be provided by a sleeve guiding the fluid flow, the sleeve (51) being reinforced by a thin external layer (52) of carbon fiber embedded in epoxy resin. Alternatively, a steel tube (26) receiving the fluid flow has aligned transverse apertures (47) containing plugs (49) of boron carbide.</p> |
