GB723000A - Improvements in or relating to pressure difference devices for fluid flow meters - Google Patents
Improvements in or relating to pressure difference devices for fluid flow metersInfo
- Publication number
- GB723000A GB723000A GB1965851A GB1965851A GB723000A GB 723000 A GB723000 A GB 723000A GB 1965851 A GB1965851 A GB 1965851A GB 1965851 A GB1965851 A GB 1965851A GB 723000 A GB723000 A GB 723000A
- Authority
- GB
- United Kingdom
- Prior art keywords
- conduit
- entrance section
- recess
- fluid flow
- entrance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
- G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
- G01F1/40—Details of construction of the flow constriction devices
- G01F1/42—Orifices or nozzles
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
723,000. Flow-meters. ELECTROFLO METERS CO., Ltd., and ENGEL, F. V. A. E. Nov. 21, 1952 [Aug. 21, 1951], No. 19658/51. Class 69 (1). A constricting element or venturi tube for fluid flow measurement within a conduit has an entrance section adapted to project freely into the conduit on the upstream side and is formed with an annular recess open towards the direction of flow, the exterior of the entrance section, the recess and the interior of the conduit together forming a chamber communicating with the high-pressure tapping of the device. In the form shown in Fig. 1, the entrance section 2 of a constricting element 1 projects into the upstream part of a conduit 5 and the annular gap 9, between the entrance section and the interior of the conduit, and a recess 10 together form a chamber which communicates with the high-pressure tapping 7 via a passage 11. At the downstream side of the element, the chamber formed by the gap 13 and the recess 12 communicates with the lowpressure tapping 8 via a passage 14. The end part of the conduit 5 may be flared so that the entrance diameter of the element can be equal to or larger than the diameter of the conduit. With the venturi tube 1, Fig. 3, the annular gap 9 is very small and spaced slots 17 are formed in the rim of the entrance section. In either form the flange 4 may be separate from the nozzle and the nozzle itself may be made in two separate parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1965851A GB723000A (en) | 1951-08-21 | 1951-08-21 | Improvements in or relating to pressure difference devices for fluid flow meters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1965851A GB723000A (en) | 1951-08-21 | 1951-08-21 | Improvements in or relating to pressure difference devices for fluid flow meters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB723000A true GB723000A (en) | 1955-02-02 |
Family
ID=10133024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1965851A Expired GB723000A (en) | 1951-08-21 | 1951-08-21 | Improvements in or relating to pressure difference devices for fluid flow meters |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB723000A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0931941A1 (en) * | 1997-08-15 | 1999-07-28 | Fujikin Inc. | Orifice for pressure type flow rate control unit and process for manufacturing orifice |
| CN109141548A (en) * | 2018-09-14 | 2019-01-04 | 杭州成套节流装置有限公司 | A kind of Venturi nozzle and processing technology |
-
1951
- 1951-08-21 GB GB1965851A patent/GB723000A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0931941A1 (en) * | 1997-08-15 | 1999-07-28 | Fujikin Inc. | Orifice for pressure type flow rate control unit and process for manufacturing orifice |
| EP0931941A4 (en) * | 1997-08-15 | 2003-05-21 | Fujikin Kk | Orifice for pressure type flow rate control unit and process for manufacturing orifice |
| CN109141548A (en) * | 2018-09-14 | 2019-01-04 | 杭州成套节流装置有限公司 | A kind of Venturi nozzle and processing technology |
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