SU723371A2 - Water metering device for parobolic trays - Google Patents
Water metering device for parobolic trays Download PDFInfo
- Publication number
- SU723371A2 SU723371A2 SU782667184A SU2667184A SU723371A2 SU 723371 A2 SU723371 A2 SU 723371A2 SU 782667184 A SU782667184 A SU 782667184A SU 2667184 A SU2667184 A SU 2667184A SU 723371 A2 SU723371 A2 SU 723371A2
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- diaphragm
- trays
- parobolic
- metering device
- water metering
- Prior art date
Links
Description
1one
Изобретение относитс к технике измерени расхода, The invention relates to a technique for measuring flow,
В основном авт. ев, 448350 описано водомерное устройство дл параболических лотков, выполненное в виде диафрагмы и двух водомерных реек, причем отметка порога диафраг (Мы расположена на отметке дна лоткового канала, а вырез диафрагки i выполнен в форме параболы.Basically auth. EV, 448350 describes a water-measuring device for parabolic trays, made in the form of a diaphragm and two water-meter rails, the threshold of the diaphragm being marked (We are located at the bottom of the tray channel, and the cut-out of the diaphragm i is in the shape of a parabola.
Недостатком этого устройства вл етс то, что точность измерени зависит от количества донных и . взвешеЙных наносов перед диафрагмой ,A disadvantage of this device is that the measurement accuracy depends on the number of bottom and. suspended sediment in front of the diaphragm,
Цель изобретени - повышение точности измерени за счет исключени вли ни донных и взвешенных наносов перед диафрагмой.The purpose of the invention is to improve the measurement accuracy by eliminating the influence of bottom and suspended sediments in front of the diaphragm.
Дл этого в предлагаемом устройстве перед диафрагмой, в месте сопр жени диафрагмы со. стенкой лотка , установлены два полых клинообразных тела со сквозными отверсти ми .To do this, in the proposed device, in front of the diaphragm, in the place of conjugation of the diaphragm with. a wall of the tray, two hollow wedge-shaped bodies with through holes are installed.
На чертеже представлена принципиальна схема предлагаемого водомерного устройства дл параболических лотков.The drawing shows a schematic diagram of the proposed water-measuring device for parabolic trays.
Устройство состоит КЗ параболического лотка 1, клинообразных тел со сквозными отверсти ми 2, насоса 3, водомерных реек 4 и 5 и диафрагг«л 6,The device consists of short-circuit parabolic tray 1, wedge-shaped bodies with through holes 2, pump 3, gauges 4 and 5 and the diaphragm L 6,
Устройство работает следующим образом.The device works as follows.
Перед измерением расхода жидкости в параболическом лотке 1 через Before measuring the flow of liquid in a parabolic tray 1 through
0 полые клинообразные тела со сквозными отверсти ми 2 в зону образовани донных наносов и взвешенных частиц подаетс от насоса 3 вода под давлением. Донные наносы и взвешен5 ные частицы унос тс водой из зоны диафрагмы.0 hollow wedge-shaped bodies with through holes 2 in the zone of formation of bottom sediments and suspended particles are supplied from pump 3 by pressurized water. Bottom sediments and suspended particles are carried away by water from the zone of the diaphragm.
После этого производ т измерение. По водомерным рейкам 4 и 5 определ ют уровни жидкости перед диафрагмой After that, a measurement is made. The gauges 4 and 5 determine the fluid levels in front of the diaphragm.
0 6 и после нее.0 6 and after it.
Расход жидкости определ ют по формулеThe flow rate is determined by the formula
Q-l,33m ri - l2 ufl:P ,Q-l, 33m ri - l2 ufl: P,
5five
Q - расход в лотковом канапе;Q - consumption in a tray canapé;
гдеWhere
m - Коэффициент расхода, определ емый тарировкой;m is the consumption coefficient determined by calibration;
Н - глубина потока перед диафрагмой;H is the depth of flow before the diaphragm;
дН - разность уровней потока доdN - the difference in flow levels to
диафрагмы и после нее; g ускорение свободного падени ;diaphragm and after it; g acceleration of free fall;
Р - параметр параболы, характеризующий форму вьфеэа диафрагмы ,Р is a parameter of a parabola, characterizing the shape of the diaphragm around the diaphragm,
В со сверхкритической скоростью при истечении через диаф-, рагму расход определ ют по формулеIn at a supercritical velocity with flow through the diaphragm, the flow rate is determined by the formula
,35mH, 35mH
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU782667184A SU723371A2 (en) | 1978-09-27 | 1978-09-27 | Water metering device for parobolic trays |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU782667184A SU723371A2 (en) | 1978-09-27 | 1978-09-27 | Water metering device for parobolic trays |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU448850A Addition SU98941A1 (en) | 1953-10-19 | 1953-10-19 | Contact device for removing weak electric currents from rotating parts of machines and apparatuses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU723371A2 true SU723371A2 (en) | 1980-03-25 |
Family
ID=20786491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU782667184A SU723371A2 (en) | 1978-09-27 | 1978-09-27 | Water metering device for parobolic trays |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU723371A2 (en) |
-
1978
- 1978-09-27 SU SU782667184A patent/SU723371A2/en active
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