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US3690184A
Expired / Lapsed
US
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Apparatus for statically measuring the average density of a liquid circulating in a pipeline
Assignee: Cegelec SA
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Filing: 1970-06-24
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Granted: 1972-09-12
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Expires: 1990-06-24
Abstract
Abstract The apparatus comprises a first column in which a certain flow extracted from the pipeline circulates, and a second column containing a predetermined quantity of calibrating liquid, the second column being fitted at its base with a horizontal diaphragm whose outer face is subjected to the pressure of the liquid in the first column. An elongated vertically disposed float extends down in the second column almost to its base and is connected at its upper end to a control device forming part of a unit for maintaining the diaphragm in its horizontal position by regulating the height of the liquid in the first column so that the hydrostatic thrusts on both surfaces of the diaphragm are equal. The average density of the liquid is determined by measuring the height of the liquid in the first column from the horizontal position of the diaphragm.
Inventors
- 👤 Pierre Chadenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:02
CPC Classifications
G; G01; G01N; G01N9/00; G01N9/26
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
198 words
Apparatus for the measurement of the average density of a liquid circulating in a pipeline comprising a pair of associated substantially vertically disposed columns, means for circulating through one of said columns a given flow of liquid extracted from the pipeline, the other of said columns being fitted at its base with a horizontal diaphragm, the outer face of which is subjected to the pressure of the liquid circulating in said one column, said other column containing a predetermined quantity of a calibrating liquid exerting a certain pressure on the inner face of said diaphragm, means for maintaining the diaphragm in its horizontal position by regulating the height of the liquid in said one column to a level such that the hydrostatic thrusts on both surfaces of said diaphragm are in equilibrium, thereby enabling the average density of the liquid being measured to be deduced from the height of the liquid in said one column, measured from the horizontal position of the diaphragm, said regulating means including means for controlling the quantity of liquid contained in said one column, and means controlled by variations of said diaphragm from a horizontal hydrostatically balanced condition for regulating said controlling means.
Claim 2
Dependent Claim
198 words
Apparatus for the measurement of the average density of a liquid circulating in a pipeline comprising a pair of associated substantially vertically disposed columns, means for circulating through one of said columns a given flow of liquid extracted from the pipeline, the other of said columns being fitted at its base with a horizontal diaphragm, the outer face of which is subjected to the pressure of the liquid circulating in said one column, said other column containing a predetermined quantity of a calibrating liquid exerting a certain pressure on the inner face of said diaphragm, means for maintaining the diaphragm in its horizontal position by regulating the height of the liquid in said one column to a level such that the hydrostatic thrusts on both surfaces of said diaphragm are in equilibrium, thereby enabling the average density of the liquid being measured to be deduced from the height of the liquid in said one column, measured from the horizontal position of the diaphragm, said regulating means including means for controlling the quantity of liquid contained in said one column, and means controlled by variations of said diaphragm from a horizontal hydrostatically balanced condition for regulating said controlling means.
Claim 3
Dependent Claim
52 words
Apparatus as defined in claim 1, in which said flow circulating means includes liquid conduit means connecting the pipeline to said one column, and in which the outer face of said diaphragm forms part of said conduit means and is exposed to the pressure of the liquid contained in said conduit means.
Claim 4
Dependent Claim
22 words
Apparatus as defined in claim 2, in which said liquid conduit means connects the pipeline to the base of said one column.
Claim 5
Dependent Claim
80 words
Apparatus as defined in claim 3, in which said flow circulating means includes second conduit means connecting the pipeline to the top of said one column so that the liquid extracted from the pipeline flows downwardly through said one column and into said first mentioned conduit means for return to the pipeline, and in which said regulating means includes means for controlling the quantity of the liquid passing through said second conduit means to the top of said one column.
Claim 6
Dependent Claim
40 words
Apparatus As defined in claim 1, in which said flow circulating means includes liquid conduit means connecting the pipeline to the top of said one column so that the liquid extracted from the pipeline flows downwardly through said one column.
Claim 7
Dependent Claim
42 words
Apparatus as defined in claim 5, in which said means for regulating the height of the liquid in said one column includes means for controlling the quantity of liquid supplied to the top of said one column by said liquid conduit means.
Claim 8
Dependent Claim
32 words
Apparatus as defined in claim 6, in which said one column is provided at its upper end with an overflow into which is discharged the liquid supplied by said liquid conduit means.
Claim 9
Dependent Claim
78 words
Apparatus as defined in claim 1, in which the top of said one column is constituted at its upper part of a vertically movable overflow enabling a portion at least of the liquid supplied to said one column to overspill, for removal from said one column, and in which said regulating means includes means for adjusting the height of said overflow to bring the hydrostatic thrust of said one column into equality with that of said other column.
Claim 10
Dependent Claim
37 words
Apparatus as defined in claim 8, in which said overflow forms a fixed part of said one column and said one column is vertically movable by said adjusting means to effect the vertical movement of said overflow.
Claim 11
Dependent Claim
40 words
An apparatus as defined in claim 8, in which said overflow is constituted of a tubular receptacle mounted on the upper end portion of said one column, said upper end portion being connected to and movable by said adjusting means.
Claim 12
Dependent Claim
30 words
Apparatus as defined in claim 10, in which said upper end portion of said one column is connected to the remainder of said one column for vertical movement relative thereto.
Claim 13
Dependent Claim
66 words
Apparatus as defined in claim 11, in which said upper end portion of said one column is slidably mounted in substantially liquid-tight relation to the remainder of said one column, and in which said regulating means comprises a motor unit and means connecting said motor unit to said upper end portion to effect sliding adjusting movement of the latter to vary the height of said overflow.
Claim 14
Dependent Claim
36 words
Apparatus as defined in claim 10, in which said overflow is enclosed in a tank associated with said upper end portion of said one column and having a discharge outlet for the overspill of said overflow.
Claim 15
Dependent Claim
77 words
Apparatus as defined in claim 13, including a second overflow constituted of a tubular receptacle mounted in said tank in given spaced relation below said first mentioned overflow, the difference in level between the two overflows representing the flow head of the liquid in said one column, a conduit connecting the base of said one column to said second overflow, and means for controlling the flow of liquid from said one column base to said second overflow.
Claim 16
Dependent Claim
37 words
Apparatus as defined in claim 14, in which said overflows and said tank are connected together in interlocked relation so that said flow head remains constant during the adjustment of the height of said first mentioned overflow.
Claim 17
Dependent Claim
80 words
Apparatus as defined in claim 8, including a second overflow associated with and positioned in given interlocked spaced relation below said first mentioned overflow, the difference in level between the two overflows representing the flow head of the liquid in said one column and remaining constant during the adjusting movements of said first overflow, a conduit means connecting said second over-flow to the base of said one column, and means for controlling the flow of liquid through said conduit means.
Claim 18
Dependent Claim
45 words
Apparatus as defined in claim 1, in which said controlled means includes an elongated float extending downwardly through the calibrating liquid almost to the base of said other column, and means connected to said float and operable by the latter to regulate said controlling means.
Claim 19
Dependent Claim
86 words
Apparatus as defined in claim 17, in which said other column is located within and concentrically arranged relative to said one column, and in which said one column has an enlarged base, and sAid other column has an enlarged base located within the enlarged base of said one column, the bottom wall of said other column enlarged base being composed of said horizontal diaphragm, and said elongated float extending down into the enlarged base of said other column to a point short of said horizontal diaphragm.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |