Method of selectively varying the differential output and overall performance characteristics of a proportional differential pressure producing fluid flow device

Claim 1

A method of selectively predetermining the differential output in a fluid flow system of a differential pressure producing fluid flow device in a conduit in said system, which device provides a restriction to fluid flow in said conduit, which restriction comprises at least one non-annular form connected to and extending inwardly from the wall of said conduit, comprising the steps of: a. selecting a form of a given geometric configuration; b. inserting the form so selected into said system in operative relation to said conduit; c. measuring the differential output of said device at a plurality of flow rates and recording said measurements; d. selecting a second form having the same geometric configuration as the first selected form, but having a different frontal area when viewed in the direction of fluid flow through said conduit; e. removing the first selected form and inserting the second selected form into said conduit in operative relation thereto and measuring the differential output of said device at a plurality of given flow rates and recording said measurements; f. selecting a further form having the same geometric configuration as the first two selected, but having a different frontal area than the first two selected when viewed in the direction of fluid flow through said conduit; g. inserting said further selected form into said conduit in place of said second form and again measuring the differential output of said device at a plurality of given flow rates and recording said measurements; h. correlating the recorded measurements as a function of differential output and frontal area for given flow rates; i. extrapolating the correlated measurements; j. and then for a desired differential output for a given flow rate, determining the frontal area of a form of the same geometric configuration to be used in said system to produce such differential output; k. then inserting a form having said last mentioned frontal area and configuration into said system in operative relation thereto.

Claim 2

A method of selectively predetermining the differential output in a fluid flow system of a differential pressure producing fluid flow device in a conduit in said system, which device provides a restriction to fluid flow in said conduit, which restriction comprises at least one non-annular form connected to and extending inwardly from the wall of said conduit, comprising the steps of: a. selecting a form of a given geometric configuration; b. inserting the form so selected into said system in operative relation to said conduit; c. measuring the differential output of said device at a plurality of flow rates and recording said measurements; d. selecting a second form having the same geometric configuration as the first selected form, but having a different frontal area when viewed in the direction of fluid flow through said conduit; e. removing the first selected form and inserting the second selected form into said conduit in operative relation thereto and measuring the differential output of said device at a plurality of given flow rates and recording said measurements; f. selecting a further form having the same geometric configuration as the first two selected, but having a different frontal area than the first two selected when viewed in the direction of fluid flow through said conduit; g. inserting said further selected form into said conduit in place of said second form and again measuring the differential output of said device at a plurality of given flow rates and recording said measurements; h. correlating the recorded measurements as a function of differential output and frontal area for given flow rates; i. extrapolating the correlated measurements; j. and then for a desired differential output for a given flow rate, determining the frontal area of a form of the same geometric configuration to be used in said system to produce such differential output; k. then inserting a form having said last mentioned frontal area and configuration into said system in operative relation thereto.

Claim 3

A method of selectively predetermining the differential output in a fluid flow system of a differential pressure producing fluid flow device in a conduit in said system, which device provides a restriction to fluid flow in said conduit, which restriction comprises at least one non-annular form connected to and extending inwardly from the wall of said conduit, said form having a surface which, when viewed in profile transverse to the direction of fluid flow in said conduit, extends inwardly at an angle to the surface of said conduit downstream to its innermost end, comprising the steps of: a. selecting a form of a given geometric configuration and size; b. inserting the form so selected into said system in operative relation to said conduit with the angle of said form positioned as aforesaid; c. measuring the differential output of said device at a plurality of flow rates and recording said measurements; d. selecting a second form having the same geometric configuration as the first selected form, but having a surface, which when viewed in profile transverse to the direction of fluid flow in said conduit, extends inwardly at a different angle to the surface of said conduit than said first selected form, said surface extending downstream to its innermost end; e. removing the first selected form and inserting the second selected form into said conduit in operative relation thereto and meAsuring the differential output of said device at a plurality of given flow rates and recording said measurements; f. selecting a further form having the same geometric configuration as the first two selected, but having a different angle when viewed in profile transverse to the direction of fluid flow through said conduit; g. inserting said further selected form into said conduit in place of said second form and again measuring the differential output of said device at a plurality of given flow rates and recording said measurements; h. correlating the recorded measurements as a function of differential output and angle for given flow rates; i. extrapolating the correlated measurements; j. and then for a desired differential output for a given flow rate, determining the angle of a form of the same geometric configuration to be used in said system to produce such differential output; k. then inserting a form having said last mentioned angle and configuration into said system in operative relation thereto.

Claim 4

A method of selectively predetermining the differential output in a fluid flow system of a differential pressure producing fluid flow device in a conduit in said system, which device provides a restriction to fluid flow in said conduit, which restriction comprises at least one non-annular form connected to and extending inwardly from the wall of said conduit, said form having a surface which, when viewed in profile transverse to the direction of fluid flow in said conduit, extends inwardly at an angle to the surface of said conduit downstream to its innermost end, comprising the steps of: a. selecting a form of a given geometric configuration and size; b. inserting the form so selected into said system in operative relation to said conduit with the angle of said form positioned as aforesaid; c. measuring the differential output of said device at a plurality of flow rates and recording said measurements; d. selecting a second form having the same geometric configuration as the first selected form, but having a surface, which when viewed in profile transverse to the direction of fluid flow in said conduit, extends inwardly at a different angle to the surface of said conduit than said first selected form, said surface extending downstream to its innermost end; e. removing the first selected form and inserting the second selected form into said conduit in operative relation thereto and meAsuring the differential output of said device at a plurality of given flow rates and recording said measurements; f. selecting a further form having the same geometric configuration as the first two selected, but having a different angle when viewed in profile transverse to the direction of fluid flow through said conduit; g. inserting said further selected form into said conduit in place of said second form and again measuring the differential output of said device at a plurality of given flow rates and recording said measurements; h. correlating the recorded measurements as a function of differential output and angle for given flow rates; i. extrapolating the correlated measurements; j. and then for a desired differential output for a given flow rate, determining the angle of a form of the same geometric configuration to be used in said system to produce such differential output; k. then inserting a form having said last mentioned angle and configuration into said system in operative relation thereto.

Claim 5

A method of selectively predetermining the differential output in a fluid flow system of a differential pressure producing fluid flow device in a conduit in said system, which device provides a restriction to fluid flow in said conduit, which restriction comprises at least one non-annular form connected to and extending inwardly from the wall of said conduit, said form having a surface which, when viewed in profile transverse to the direction of fluid flow in said conduit, extends inwardly at an angle to the surface of said conduit downstream to its innermost end, comprising the steps of: a. selecting a form of a given geometric configuration and size; b. inserting the form so selected into said system in operative relation to said conduit with the angle of said form positioned as aforesaid; c. measuring the differential output of said device at a plurality of flow rates and recording said measurements; d. selecting a second form having the same geometric configuration as the first selected form, but having a different frontal area when viewed in the direction of fluid flow through said conduit, and having a surface, which when viewed in profile transverse to the direction of fluid flow in said conduit, extends inwardly at a different angle to the surface of said conduit than said first selected form, said surface extending downstream to its innermost end; e. removing the first selected form and inserting the second selected form into said conduit in operative relation thereto and measuring the differential output of said device at a plurality of given flow rates and recording said measurements; f. selecting a further form having the same geometric configuration as the first two selected, but having a different frontal area than the first two selected when viewed in the direction of fluid flow through said conduit and having a different angle when viewed in profile transverse to the direction of fluid flow through said conduit; g. inserting said further selected form into said conduit in place of said second form and again measuring the differential output of said device at a plurality of given flow rates and recording said measurements; h. correlating the recorded measurements as a function of differential output and frontal area and angle, for given flow rates; i. extrapolating the correlated measurements; j. and then for a desired differential output for a given flow rate, determining the frontal area of a form of the same geometric configuration, and the angle of a form of the same geometric configuration, to be used in said system to produce such differential output; and k. then inserting a form having said last mentioned frontal area and angle and configuration into said system in operative relation thereto.

Claim 6

A method of selectively predetermining the differential output in a fluid flow system of a differential pressure producing fluid flow device in a conduit in said system, which device provides a restriction to fluid flow in said conduit, which restriction comprises at least one non-annular form connected to and extending inwardly from the wall of said conduit, said form having a surface which, when viewed in profile transverse to the direction of fluid flow in said conduit, extends inwardly at an angle to the surface of said conduit downstream to its innermost end, comprising the steps of: a. selecting a form of a given geometric configuration and size; b. inserting the form so selected into said system in operative relation to said conduit with the angle of said form positioned as aforesaid; c. measuring the differential output of said device at a plurality of flow rates and recording said measurements; d. selecting a second form having the same geometric configuration as the first selected form, but having a different frontal area when viewed in the direction of fluid flow through said conduit, and having a surface, which when viewed in profile transverse to the direction of fluid flow in said conduit, extends inwardly at a different angle to the surface of said conduit than said first selected form, said surface extending downstream to its innermost end; e. removing the first selected form and inserting the second selected form into said conduit in operative relation thereto and measuring the differential output of said device at a plurality of given flow rates and recording said measurements; f. selecting a further form having the same geometric configuration as the first two selected, but having a different frontal area than the first two selected when viewed in the direction of fluid flow through said conduit and having a different angle when viewed in profile transverse to the direction of fluid flow through said conduit; g. inserting said further selected form into said conduit in place of said second form and again measuring the differential output of said device at a plurality of given flow rates and recording said measurements; h. correlating the recorded measurements as a function of differential output and frontal area and angle, for given flow rates; i. extrapolating the correlated measurements; j. and then for a desired differential output for a given flow rate, determining the frontal area of a form of the same geometric configuration, and the angle of a form of the same geometric configuration, to be used in said system to produce such differential output; and k. then inserting a form having said last mentioned frontal area and angle and configuration into said system in operative relation thereto.

Claim 7

A method of selectively predetermining the differential output in a fluid flow system of a differential pressure producing fluid flow device in a conduit in said system, which device provides a restriction to fluid flow in said conduit, which restriction comprises at least one non-annular form connected to and extending inwardly from the wall of said conduit, comprising the steps of: a. selecting a form of a given geometric configuration having surfaces, which when viewed transverse to the direction of fluid flow in said conduit, present a profile which is different from one position to another, depending on the orientation of the form with respect to fluid flow; b. inserting the form so selected into said system in operative relation to said conduit; c. measuring the differential output of said device at a plurality of flow rates and recording said measurements; d. reorienting said form with respect to said fluid flow so that it presents a different profile when viewed transverse to the direction of fluid flow through said conduit; e. measuring the differential output of said device at a plurality of given flow rates and recording said measurements; f. again reorienting said form so that it presents a different profile when viewed transverse to the direction of fluid flow through said conduit; g. again measuring the differential output of said device at a plurality of given flow rates and recording said measurements; h. correlating the recorded measurements as a function of differential output and orientation for given flow rates; i. extrapolating the correlated measurements; j. and then for a desired differential output for a given flow rate, determining the orientation of the form to be used in said system to produce such differential output; k. then inserting said form in said last mentioned position with respect to fluid flow, into said system in operative relation thereto.

Claim 8

A method of selectively predetermining the differential output in a fluid flow system of a differential pressure producing fluid flow device in a conduit in said system, which device provides a restriction to fluid flow in said conduit, which restriction comprises at least one non-annular form connected to and extending inwardly from the wall of said conduit, comprising the steps of: a. selecting a form of a given geometric configuration having surfaces, which when viewed transverse to the direction of fluid flow in said conduit, present a profile which is different from one position to another, depending on the orientation of the form with respect to fluid flow; b. inserting the form so selected into said system in operative relation to said conduit; c. measuring the differential output of said device at a plurality of flow rates and recording said measurements; d. reorienting said form with respect to said fluid flow so that it presents a different profile when viewed transverse to the direction of fluid flow through said conduit; e. measuring the differential output of said device at a plurality of given flow rates and recording said measurements; f. again reorienting said form so that it presents a different profile when viewed transverse to the direction of fluid flow through said conduit; g. again measuring the differential output of said device at a plurality of given flow rates and recording said measurements; h. correlating the recorded measurements as a function of differential output and orientation for given flow rates; i. extrapolating the correlated measurements; j. and then for a desired differential output for a given flow rate, determining the orientation of the form to be used in said system to produce such differential output; k. then inserting said form in said last mentioned position with respect to fluid flow, into said system in operative relation thereto.