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 Title: |
US3777549:
MEASUREMENT OF HOLE PRESSURE DIFFERENTIALS AND PROTUBERANCE PRESSURE DIFFERENTIALS IN NON-NEWTONIAN LIQUIDS OR THE LIKE
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Lodge, Arthur Scott; Madison, WI
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| Assignee: |
Wisconsin Alumni Research Foundation, Madison, WI
other patents from WISCONSIN ALUMNI RESEARCH FOUNDATION (631280) (approx. 1,178)
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| Published / Filed: |
1973-12-11
/ 1971-07-29
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| Application Number: |
US1971000167254
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| IPC Code: |
Advanced:
G01N 11/02;
Core:
G01N 11/00;
IPC-7:
G01N 11/00;
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| U.S. Class: |
Current:
073/053.01;
073/861.63;
Original:
073/053;
073/213;
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| Field of Search: |
073/053,61.1 R,402,205 D,205 R,205 L,213,438
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| Priority Number: |
| 1971-07-29 |
US1971000167254 |
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| Abstract: |
The hole pressure differential is measured by providing at least one hole in a wall along which the liquid is caused to flow. The wall may constitute a portion of a passage, reaction vessel or the like. A pressure transducer or sensor is recessed into the hole to measure the hole pressure therein. At least one non-hole pressure transducer is also provided to measure the non-hole pressure along the wall. The hole pressure and the non-hole pressure, as measured, are combined subtractively, or otherwise, so as to derive the difference between the non-hole pressure and the hole pressure at a particular location along the wall. The non-hole pressure sensor may be located opposite the hole at a point where the non-hole pressure is the same as it would be at the location of the hole. In another arrangement, two non-hole pressure sensors are provided upstream and downstream at intervals from the hole, in which case the hole pressure may be combined subtractively with the average of the non-hole pressures. Similarly, two holes and hole pressure sensors may be spaced upstream and downstream at intervals from the non-hole pressure sensor so that the non-hole pressure may be combined subtractively with the average of the hole pressures. Other arrangements may utilize a sequence of two non-hole pressure sensors and one hole pressure sensor with subtractive combining means to derive the differential hole pressure. Alternatively, two hole pressure sensors and one non-hole pressure sensor may be arranged in sequence. Similar arrangements may be employed to measure the protuberance or negative-hole pressure differentials, by replacing the holes and hole pressure transducers with protuberances and protuberance pressure transducers.
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| Attorney, Agent or Firm: |
Burmeister, Palmatier & Hamby ;
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| Primary / Asst. Examiners: |
Swisher, S. Clement; Roskos, Joseph W.
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| INPADOC Legal Status: |
None
Family Legal Status Report
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| Family: |
Show 6 known family members
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First Claim:
Show all 35 claims |
I claim:
1. Apparatus for measuring the non-flush pressure differential in a liquid,
- comprising wall means,
- means for causing the liquid to flow along said wall means,
- non-flush pressure sensing means including at least one non-flush formation along said wall means and at least one non-flush pressure sensor connected with said formation,
- said non-flush formation being localized and thereby being operative to change the shape of the flow lines in said liquid adjacent said non-flush pressure sensor without substantial changing the speed of the flow,
- flush pressure sensing means including at least one flush pressure sensor exposed to the liquid along said wall means,
- and means connected to said last two mentioned means for deriving the difference between the flush pressure and the non-flush pressure at a predetermined location along said wall means.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 7 U.S. patent(s) that reference this one
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