SU146984A1 - A throttle device designed to measure the differential pressure flow at low Reynolds numbers - Google Patents
A throttle device designed to measure the differential pressure flow at low Reynolds numbersInfo
- Publication number
- SU146984A1 SU146984A1 SU673298A SU673298A SU146984A1 SU 146984 A1 SU146984 A1 SU 146984A1 SU 673298 A SU673298 A SU 673298A SU 673298 A SU673298 A SU 673298A SU 146984 A1 SU146984 A1 SU 146984A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- measure
- differential pressure
- reynolds numbers
- low reynolds
- throttle device
- Prior art date
Links
Landscapes
- Measuring Volume Flow (AREA)
Description
Известные дроссельные устройства, предназначенные дл измерени расхода при малых числах Рейнольдса обладают серьезными недостатками , ограничивающими возможность их широкого применени и внедрени в серийное производство. Так, например, у сдвоенных диафрагм во врем их эксплуатации притупл ютс острые кромки, что ведет к увеличению коэффициента расхода. Между дисками диафрагм образуетс осадок твердых частиц, вызывающий искажение пол скоростей потока и, тем самым, увеличение неточности измерени - Сопла с профилем в четверть круга вследствие трудности получени расчетного профил рабочей поверхности, особенно при малых диаметрах трубопроводов , требуют индивидуальной тарировки, что затрудн ет изготовление таких сопел с одинаковым модулем дл различных диаметров трубопровод в .The known choke devices designed to measure the flow rate at low Reynolds numbers have serious drawbacks that limit their widespread use and commercialization. For example, with doubled orifice plates, sharp edges are blunt during their use, which leads to an increase in the flow coefficient. A precipitate of solid particles forms between the diaphragm discs, causing distortion of the floor of the flow velocities and, thus, an increase in measurement inaccuracy - Nozzles with a quarter-circle profile due to the difficulty of obtaining the calculated profile of the working surface, especially for small pipe diameters, require individual calibration that makes it difficult to produce such nozzles with the same module for different pipe diameters c.
Предложенное дроссельное устройство, предназначенное дл измерени расхода по перепаду давлени при малых числах Рейнольдса, не имеет указанных недостатков.The proposed choke device for measuring the flow rate of the differential pressure at low Reynolds numbers does not have these disadvantages.
Устройство сохран ет посто нство коэффициента расхода при малых числах Рейнольдса, лежащих ниже предельных значений; позвол ет измер ть расход загр зненных жидкостей; имеет простой в изготовлении рабочий профиль.The device maintains a constant flow coefficient at low Reynolds numbers below the limiting values; allows you to measure the flow of contaminated liquids; has an easy to manufacture working profile.
Достигаетс это благодар тому, что в описываемом дроссельном устройстве, выполненном в виде конического сужающегос по направлению потока отверсти , угол конуса равен 60°, длина конуса равна половине меньшего диаметра, длина же цилиндрической части равна 0,02 этого диаметра со стороны выхода потока.This is achieved due to the fact that in the described throttle device, made in the form of a conical opening tapering in the direction of flow, the angle of the cone is 60 °, the length of the cone is equal to half the smaller diameter, and the length of the cylindrical part is equal to 0.02 of this diameter on the flow exit side.
На чертеже схематически изображена конструкци предложенного стройства.The drawing shows schematically the structure of the proposed structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU673298A SU146984A1 (en) | 1960-07-13 | 1960-07-13 | A throttle device designed to measure the differential pressure flow at low Reynolds numbers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU673298A SU146984A1 (en) | 1960-07-13 | 1960-07-13 | A throttle device designed to measure the differential pressure flow at low Reynolds numbers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU146984A1 true SU146984A1 (en) | 1961-11-30 |
Family
ID=48302400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU673298A SU146984A1 (en) | 1960-07-13 | 1960-07-13 | A throttle device designed to measure the differential pressure flow at low Reynolds numbers |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU146984A1 (en) |
-
1960
- 1960-07-13 SU SU673298A patent/SU146984A1/en active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| SU1530913A1 (en) | Flow meter | |
| US3430489A (en) | Modified turbine mass flow meter | |
| US2212186A (en) | Fluid flow meter | |
| GB2032118A (en) | Differential pressure probe | |
| SU146984A1 (en) | A throttle device designed to measure the differential pressure flow at low Reynolds numbers | |
| GB1319325A (en) | Flow metering devices of the pressure differential producing type | |
| DE720527C (en) | Throttle device for flow meter | |
| GB1089203A (en) | Improvements in or relating to fluid flow measuring devices | |
| FR1485681A (en) | Method and apparatus for measuring the mass or volume flow of a fluid | |
| JONSSON et al. | Analysis of fluid flow and heat-transfer characteristics of a highly rarefied gas passing through a tapered tube or conical nozzle | |
| Engel | Discharge coefficient characteristics of orifices | |
| DE479044C (en) | Device for setting the coefficient in Staugeraeten with measuring nozzles, z. B. Venturi tubes for measuring the flow velocity of gases, in particular for measuring the speed of aircraft | |
| RU487571C (en) | Nozzle for measuring dynamic pressure in hypersonic free-molecule gas flow | |
| JOHANNESEN | Further results on the mixing of free axially-symmetrical jets of Mach number 1. 40(Flow characteristics of axially symmetrical, supersonic, fully-expanded jet to determine relation between static pressure distributions and jet turbulence) | |
| US3969938A (en) | Apparatus for measuring the velocity and/or density of a fluid stream | |
| CH611413A5 (en) | Apparatus for digital measurement of the volume flow rate of a fluid in a pipe | |
| GB1110712A (en) | Improvements relating to fluid-flow metering means | |
| SU385600A1 (en) | ||
| GB927589A (en) | Flow tubes | |
| BRUNER | An experimental and theoretical investigation of conic entrance orifice performance in the low Reynolds number domain(Conic, square-edged orifice for turbulent flow in shipboard automatic control systems) | |
| Dianov et al. | Analysis of the hydrodynamic aggregation of aerosol particles in a sound field under Stokes flow conditions(Hydrodynamic drawing together problem for aerosol particles oscillating in sonic field at small Reynolds numbers, showing optimal field frequency-approach velocity correspondence) | |
| GB1193164A (en) | Apparatus for Observing and/or Monitoring the Individual Properties of a Fluid Flowing Therethrough | |
| MONTGOMERY | The dynamic response of fluidic circuits with blocked and orifice terminated lines(Dynamic response of fluidic circuits with blocked and orifice terminated lines) | |
| NIKITINA | Measurement of pulsating pressure with a piezometer | |
| GB1308080A (en) | Total pressure probe |