Measuring and testing – Volume or rate of flow – Using differential pressure
Patent
1989-04-12
1990-09-18
Woodiel, Donald O.
Measuring and testing
Volume or rate of flow
Using differential pressure
73182, G01F 146
Patent
active
049570072
ABSTRACT:
A pressure sensing probe 10 includes an elliposoidally shaped symmetric probe body 12 with fluid orifices 14 and 16 facing into and away from the flow. The orifices 14 and 16 facing in opposite directions allows direction of flow to be detected along with pressure magnitude. The symmetric body shape allows the probe 10 to operate satisfactorily with some misalignment with respect to the flow direction 32 but perpendicularity between orifices 14 and 16 and the flow direction 32 is preferred. The body 12 is ellipsoidally shaped to maximize the difference in pressure between the two orifices 14 and 16 and is held away from pipe wall turbulence by a symmetric stem 18. The ellipsoidal shape of the body 12 and stem 18 are also designed to minimize turbulence in the fluid created by the probe 10. The length to diameter ratio of the ellipsoidal shape of the probe body 12 changes depending upon fluid density and flow speed and the desires to maximize the pressure signal while minimizing flow disturbance. As the length to diameter ratio is minimized the differential pressure sensed is maximized and as the ratio is maximized flow disturbance is minimized. The orifices 14 and 16 communicate with a conventional differential pressure sensing device 24 outside the pipe through tubes 20 and 22 passing through the body 12 and stem 18. An alternate probe 40 with a greater range of flow direction insensitivity has funnels 50 and 52 which direct flow past orifices 44 and 46 in an internal flow channel 48. A further alternate probe has a solid body 90 suspended from the pressure sensing tubes 98 and 100 with perforations 102 in the tubes 98 and 100 at the juncture of the tubes 98 and 100 and the body 90.
REFERENCES:
patent: 817470 (1906-04-01), Cole
patent: 3355946 (1967-12-01), Lazell
patent: 4344330 (1982-08-01), Renken et al.
patent: 4823615 (1989-04-01), Taha
Westinghouse Electric Corp.
Woodiel Donald O.
LandOfFree
Bi-directional pressure sensing probe does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bi-directional pressure sensing probe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bi-directional pressure sensing probe will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1565618