SU79674A1 - Apparatus for determining the pumping rate of vacuum pumps and measuring the vacuum conductivity - Google Patents

Apparatus for determining the pumping rate of vacuum pumps and measuring the vacuum conductivity

Info

Publication number
SU79674A1
SU79674A1 SU373767A SU373767A SU79674A1 SU 79674 A1 SU79674 A1 SU 79674A1 SU 373767 A SU373767 A SU 373767A SU 373767 A SU373767 A SU 373767A SU 79674 A1 SU79674 A1 SU 79674A1
Authority
SU
USSR - Soviet Union
Prior art keywords
vacuum
conductivity
measuring
determining
pumping rate
Prior art date
Application number
SU373767A
Other languages
Russian (ru)
Inventor
Г.И. Аркин
Original Assignee
Г.И. Аркин
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Г.И. Аркин filed Critical Г.И. Аркин
Priority to SU373767A priority Critical patent/SU79674A1/en
Application granted granted Critical
Publication of SU79674A1 publication Critical patent/SU79674A1/en

Links

Landscapes

  • Examining Or Testing Airtightness (AREA)

Description

Предметом изобретени   вл етс  прибор дл  определени  скорости откачивани  вакуумньши насосами и измерени  вакуумной проводнм-ости с применением манометров.The subject of the invention is a device for determining the pumping speed of vacuum pumps and measuring vacuum conductors using pressure gauges.

Отличительной |0саб.енн:остью предлагаемого прибора 5гол етс  соединение испытуемого насоса, регулируемых дросселей и манометров по схеме моста Уитстона.Distinctive | ad: the strength of the proposed device 5 is the connection of the test pump, adjustable throttles and pressure gauges according to the scheme of the Wheatstone.

На фиг. 1 и 2 приведены пневматические схемы предлатаемого прибора при использовании его дл  вышеуказанных измерений. Здесь имеютс  след тощие обозначени : ЛР2 - регулируемый дроссель, соединенный с атмосферой; Kpi - кран, соедин ющий дроссель Др с прибором; Wi и W2 - регулируемые дроссели, у которых устанавливаетс  одинакова  вакуумна  проводимость , W - измер ема  вакуумна  проводимость; Др1 - отградуированный дроссель; MI и Ма - манометры, измер ющие давление соответственно в точках А и В; ДН и ФЯ - диффузионный и форвакуумный насосы; ББ - балластный баллон.FIG. Figures 1 and 2 show the pneumatic diagrams of the device being sold when using it for the above measurements. Here there is a trace of lean designations: LR2 - adjustable choke, connected to the atmosphere; Kpi - tap connecting the choke Dr with the device; Wi and W2 are adjustable chokes in which the same vacuum conductivity is established, W is the measured vacuum conductivity; DR1 - graduated choke; MI and Ma are manometers measuring pressure at points A and B, respectively; DN and FF - diffusion and forevacuum pumps; BB - ballast.

Перед производством измеренийBefore taking measurements

точками Л и С (фиг. 1) при points L and C (Fig. 1) with

по:МОЩ1И дросселей Wi, и Др1 by: Wi throttlepower, and Dr1

устанавливаетс  соответствующий период давлений.an appropriate pressure period is established.

Затем кран Kpz ставитс  в -такое положение, при котором мано.метр MZ измер ет давление в точке А.Then the Kpz valve is placed in the - such position, at which the manometer MZ measures pressure at point A.

Измен   вакуумную проводимость дроссел  Дрь можно добитьс  равных показаний у манометров М, и Л12, при которых проводимость измер емого элемента W, будет равна проводимости дроссел  Др1.By changing the vacuum conductivity of the throttles Dru, it is possible to achieve equal readings for the gauges M, and L12, at which the conductivity of the measured element W will be equal to the conductivity of the throttles D1.

Если необходимо оценить величину течи в вакуумной системе по ее вакуумной проводимости, то перва  подключаетс  одним концом к точке А. Дроссель Др1 при этом соедин етс  с атмосферой, после чего измерени  производ тс  вышеописанным образом.If it is necessary to estimate the magnitude of the leak in the vacuum system by its vacuum conductivity, then the first is connected at one end to point A. At the same time, choke DR1 is connected to the atmosphere, after which measurements are made as described above.

При измерени х скорости откачки в ветвь / моста (фиг. 2) включаетс  испытуемый насос, а в ветвь 2 - насос с известной скоростью откачки и отградуированный дроссель Др2. При этом проводимости ветвей 3 и 4 должны быть равны.When measuring the pumping speed, the test pump is turned on to the branch / bridge (Fig. 2), and pump 2 with a known pumping speed and calibrated throttle Ai2 are included in branch 2. In this case, the conductance of the branches 3 and 4 should be equal.

Дл  действительной скорости откачки Se в ветви 2 справедлива 1For actual pumping speed Se in branch 2 is fair 1

где VS - изформула Se jwhere VS is the formula Se j

вестна  скорость откачки насоса pump pumping speed is known

9Л79Л7

вакуумна  проводимость дроссел  в этой ветви. Регзлиру  дроссель Др1, можно добитьс  совпадени  показаний манометров М и М, причем скорость Se будет равна скорости откачки у испытываемого насоса. vacuum conduction of drossel in this branch. By adjusting the throttle drum1, it is possible to achieve a coincidence of the readings of the pressure gauges M and M, and the speed Se will be equal to the pumping speed of the test pump.

Предмет изобретени Subject invention

Прибор дл  определени  скорости откачивани  вакуумными насосами и измерени  вакуумной проводимости с применением манометров , присоединенных к вакуумной системе, составленной из испытуемого объекта, форвакуумного и диффузионного насосов, балластного баллона между ними и трубопроводов с кранами и регулируемыми дроссел ми, отличающийс  тем, что испытуемый насос и три регулируемые дроссел , в том числе один градуированный, последовательно к которому приключен контрольный насос с известной скоростью откачивани  или измер емой проводимостью, соединены по схеме моста Уитстона с установленными в двух его узловых точках манометрами, по равенству показаний которых определ ют равенство скорости откачивани  испытуемого и контрольного насосов или равенство вакуумных проводимостей испытуемого объекта и градуированного дроссел .A device for determining the pumping rate of vacuum pumps and measuring the vacuum conductivity using pressure gauges attached to a vacuum system made up of a test object, forevacuum and diffusion pumps, a ballast cylinder between them and pipelines with cranes and adjustable throttles, characterized in that the test pump and three adjustable throttles, including one graduated one, successively to which a control pump with a known pumping rate or measured product is adventurous water content, are connected according to the scheme of the Wheatstone bridge with pressure gauges installed at its two nodal points, the equality of the readings of which determine the equality of the evacuation rate of the test and control pumps or the vacuum conductivities of the test object and the graduated droplets.

«2“2

М,M,

SU373767A 1948-01-31 1948-01-31 Apparatus for determining the pumping rate of vacuum pumps and measuring the vacuum conductivity SU79674A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU373767A SU79674A1 (en) 1948-01-31 1948-01-31 Apparatus for determining the pumping rate of vacuum pumps and measuring the vacuum conductivity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU373767A SU79674A1 (en) 1948-01-31 1948-01-31 Apparatus for determining the pumping rate of vacuum pumps and measuring the vacuum conductivity

Publications (1)

Publication Number Publication Date
SU79674A1 true SU79674A1 (en) 1948-11-30

Family

ID=48253584

Family Applications (1)

Application Number Title Priority Date Filing Date
SU373767A SU79674A1 (en) 1948-01-31 1948-01-31 Apparatus for determining the pumping rate of vacuum pumps and measuring the vacuum conductivity

Country Status (1)

Country Link
SU (1) SU79674A1 (en)

Similar Documents

Publication Publication Date Title
SU79674A1 (en) Apparatus for determining the pumping rate of vacuum pumps and measuring the vacuum conductivity
JPS5563732A (en) Leakage measuring device
KR900013296A (en) How to measure the flow rate of exhaust gas
Wilson Methods of measuring soil moisture
ES405108A1 (en) Method and apparatus for pressure and flow measurement
SU81636A1 (en) Instrument for determining the permeability of rocks
US3690148A (en) Pressure transducers
SU78542A1 (en) T homer for measuring pressures and velocities of gas-air flows
US1766782A (en) Stress-measuring device
SU150671A1 (en) Instrument for determining the tension of ropes and flexible threads
SU97182A1 (en) A device for determining the amount of gases dissolved in a liquid
SU124176A1 (en) Portable test bench for checking differential pressure gauges
SU75781A1 (en) Instrument for determining the specific surface of powdered materials (surpasometer)
SU75321A1 (en) Instrument for measuring small deformations
SU900140A2 (en) Device for pressure gauge reading averaging
SU81629A1 (en) Device for determining the degree of loading of dredging reflow pipelines with soil
GB758873A (en) Improvements in or relating to fluid operated measuring or testing device
SU150275A1 (en) Device for calibrating soil pressure sensors
SU386320A1 (en)
SU71368A1 (en) Manometer
AT169291B (en) Device for measuring periodically changing pressures, especially in vessels with elastic walls, e.g. B. for blood pressure measurement
SU111839A1 (en) Wheatstone Bridge
SU556328A1 (en) Method for measuring volumetric gas content in gas containing mixture
SU669243A1 (en) "ida" device for monitoring rust-proofing pressure
SU518664A1 (en) Pressure measuring device