WO2023195889A1 - Dispositif de mesure d'écoulement de gaz destiné à mesurer des écoulements de gaz dans un espace humide par déplacement de liquide - Google Patents

Dispositif de mesure d'écoulement de gaz destiné à mesurer des écoulements de gaz dans un espace humide par déplacement de liquide Download PDF

Info

Publication number
WO2023195889A1
WO2023195889A1 PCT/SE2023/050274 SE2023050274W WO2023195889A1 WO 2023195889 A1 WO2023195889 A1 WO 2023195889A1 SE 2023050274 W SE2023050274 W SE 2023050274W WO 2023195889 A1 WO2023195889 A1 WO 2023195889A1
Authority
WO
WIPO (PCT)
Prior art keywords
compartment
measuring device
flow measuring
gas flow
gas
Prior art date
Application number
PCT/SE2023/050274
Other languages
English (en)
Inventor
Jing Liu
Original Assignee
Bpc Instruments Ab
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 Bpc Instruments Ab filed Critical Bpc Instruments Ab
Publication of WO2023195889A1 publication Critical patent/WO2023195889A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F3/00—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow
    • G01F3/24—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers moved during operation
    • G01F3/26—Tilting-trap meters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F3/00—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow
    • G01F3/30—Wet gas-meters

Definitions

  • the present invention relates to a gas flow measuring device intended to measure gas flows in a wet space by liquid displacement.
  • a measuring device for measuring an ultra-low gas flow working by the principle of liquid displacement, wherein the measuring device comprises at least one cell comprising a gas inflow means, a gas compartment means with a predefined inner geometric physical volume and active volume, the gas compartment means having one gas accumulating end and one lifting end, the gas compartment means also defining a geometric gas collecting point inside of the gas compartment means during a gas filling cycle, the geometric gas collecting point moving further and further from the gas accumulating end to the lifting end during the gas filling cycle, and wherein the cell comprises a holding means having a pivoting element enabling the gas compartment means to pivot upwards when the geometric gas collecting point is positioned at the lifting end and the lifting force is larger than the down-pressing force at the lifting end, thereby releasing all of the accumulated gas in the gas compartment means, and then pivoting back to its initial standby position for new receipt and storage of gas during another gas filling cycle until next releasing sequence,
  • the present invention is directed to a gas flow device which is suitable to handle not only ultra-low gas flows but also comparatively larger gas flows.
  • the device according to the present invention is improved in terms of measuring gas flows which changes from very low gas flows to comparatively large gas flows.
  • a gas flow measuring device intended to measure gas flows in a wet space by liquid displacement, said gas flow measuring device having a first larger compartment with a definite and predefined inner geometric volume, the first larger compartment having one gas accumulating end and one lifting end and having a pivoting element enabling the first larger compartment to pivot upwards to a releasing position where the gas contained in the first larger compartment is released and then downwards again to its initial position ready to be filled with gas again, said first larger compartment operating according to the leverage effect, said gas flow measuring device also comprising a second smaller compartment contained inside of the first larger compartment, which second smaller compartment is arranged to be filled when the first larger compartment is in its releasing position.
  • the gas flow measuring device according to the present invention is especially suitable for comparatively large gas flows. It should be noted that the gas flow measuring device according to the present invention can be applied to any volume, however, it makes sense mainly to large volumes where the movement of flipping up and down of the first larger compartment in the liquid would be slow. As will be explained further below, if a regular gas flow measuring device is used, considerable amount of gas is in the risk of escaping during the opening of a flow cell. This may be avoided by using a device according to the present invention.
  • the gas flow measuring device comprises two compartments where the second compartment is arranged to be filled with gas when the first large main compartment is in its releasing position.
  • This function has several advantages. First of all, even if the main larger compartment is in its releasing position, or on its way to the releasing position, additional gas entering the device is possible to capture and measure. This implies that gas escape is avoided when the flow cell in its releasing position or on its way to the releasing position or on its back to its initial position from the releasing position. This is a great advantage of the device according to the present invention as it implies that the measuring device can handle comparatively large gas flows in a very smart way without any gas escape/leakage.
  • this event may drive the larger first compartment to pivot back to its initial position again faster than otherwise. Also this may be enabled by levering effect and no counter-weight is needed.
  • This functionality provides for the possibility to measure also large gas flows in a very accurate way as the larger gas compartment is arranged in its releasing position a comparatively short time, when being in gas releasing mode, and during that time additional gas bubbles entering the gas flow measuring device is captured by the smaller second compartment.
  • the larger compartment and smaller compartment is linked to each other so that when one of them moves and changes its position, then the other also changes its position relatively.
  • the second smaller compartment has an open side which is the bottom side of the smaller compartment when the first larger compartment is in its releasing position, which open side enable for the second smaller compartment being arranged to be filled with gas when the first larger compartment is in its releasing position.
  • the second smaller compartment is formed by a limiter, such as a clap board.
  • the second smaller compartment is arranged to release gas into the first larger compartment at the initial position of the first larger compartment and wherein the second smaller compartment is arranged to trap gas inside of the second smaller compartment at at least the releasing position of the first larger compartment.
  • the second smaller compartment captures gas when the first larger compartment is in its releasing position, on its way to the releasing position or on its back to its initial position from the releasing position.
  • the first larger compartment is arranged with a longitudinal cross section in the shape of a triangle and/or a trapezoid, preferably a combined shape of a triangle and a trapezoid, more preferably a symmetrical triangle sitting on an asymmetrical trapezoid, preferably wherein an open bottom side of the first large compartment is the longest side of the first larger compartment.
  • a trapezoid preferably a combined shape of a triangle and a trapezoid, more preferably a symmetrical triangle sitting on an asymmetrical trapezoid, preferably wherein an open bottom side of the first large compartment is the longest side of the first larger compartment.
  • the pivoting element is arranged closer to a middle point of a longitudinal cross section than any of two end points of the longitudinal cross section.
  • this may be beneficial to provide an optimization from different perspectives.
  • a measuring device according to the present invention comprises also a smaller second compartment
  • this type of positioning of the pivoting element may be suitable and beneficial also for the second smaller compartment as such.
  • the first and second compartments are linked to each other, and a positioning with the pivoting element arranged closer to a middle point provides a good balance for the leverage effect of both compartments, relatively to each other. This may be understood from viewing e.g. fig. 1 .
  • the second smaller compartment has an open side which is the bottom side of the smaller compartment when the first larger compartment is in its releasing position, and wherein the open side is the longest side of the smaller compartment.
  • the open sides, i.e. the gas receiving sides, of each of the compartments are the longest sides of these compartments.
  • the pivoting element is arranged at a vertical distance from a bottom side of the first large compartment. This placement of the pivoting element is of interest to provide a balance or optimal point when the larger compartment and thus flow cell starts to flip over from its initial position to its gas releasing position.
  • the first larger compartment When the gas is trapped in the first larger compartment which is above horizontal level of the pivoting element, the first larger compartment will stand its initial position. Instability will increase when the trapped gas is continuously increased and push the water level below the horizontal level of the pivoting element. It is at this situation, the first larger compartment will lose its balance and flip over to its releasing position.
  • this aspect is related to the volume size of entrapped gas volume.
  • the pivoting element point
  • less entrapped gas is expected before flipping over the flow cell.
  • the flow cell can hold more entrapped gas before flipping over to release the entrapped gas.
  • a suitable balance here is preferred, i.e. placing a pivoting element at a distance from a bottom side of the first large compartment.
  • this distance is in a range from 30 - 60% of the full distance from the bottom to the top.
  • the gas flow measuring device comprises a bottom stand connected to the first larger compartment via pivoting elements on each longitudinal side of the first larger compartment.
  • a bottom stand connected to the first larger compartment via pivoting elements on each longitudinal side of the first larger compartment.
  • the first larger compartment may be provided with one or more extra weights, suitably close to the pivoting endpoint, to ensure an efficient driving force from the releasing position and back to its initial position of the first larger compartment.
  • extra weights suitably close to the pivoting endpoint, to ensure an efficient driving force from the releasing position and back to its initial position of the first larger compartment.
  • Such an extra weight positioned as far from the pivoting element as possible, that is at the endpoint or close to it, will also provide further stability ensuring that once the first larger compartment starts to pivot upwards, then this procedure is performed efficiently, meaning that the risk of releasing only a small part of the gas inside the first larger compartment and then pivoting back again to its initial position is suppressed.
  • the gas flow measuring device comprises a sensor detecting a position change for the gas flow measuring device.
  • the sensor detecting a position change for the gas flow measuring device is a magnetic sensor, motion sensor, optical coupler, or any kind of light emitting diode & receiver, IR infrared emitter & receiver and LED- photo diode & photo transistor, ultrasonic detector, camera unit, preferably a magnetic sensor.
  • the gas flow measuring device comprises at least one temperature sensor and at least one pressure sensor. Also these sensors may be beneficial to include to detect changes.
  • the second smaller compartment when containing accumulated gas inside, is arranged to drive the first larger compartment back to its initial position from its releasing position.
  • One such alternative is shown in the figures, see especially fig. 2.
  • the gas flow measuring device may have a so called closed or open design.
  • a closed first larger compartment implies that this is totally sealed to the outside and is only connected to the outside via a gas inlet and a gas outlet. Such a closed first compartment is preferred for certain technical applications.
  • a method comprising using a gas flow measuring device according to the present invention, for trapping gas into the second smaller compartment when the first larger compartment is in its releasing position.
  • a method comprising using a gas flow measuring device according to the present invention, for driving back the first larger compartment to its initial position from its releasing position by means of the second smaller compartment containing accumulated gas inside and as such pushing the first larger compartment to flip back to its initial position.
  • the gas flow measuring device has a first larger compartment 2 with a definite and predefined inner geometric volume, the first larger compartment 2 having one gas accumulating end 3 and one lifting end 4 and having a pivoting element 5 enabling the first larger compartment 2 to pivot upwards to a releasing position where the gas contained in the first larger compartment 2 is released and then downwards again to its initial position ready to be filled with gas again, said first larger compartment 2 operating according to the leverage effect, and wherein the gas flow measuring device 1 also comprises a second smaller compartment 6 contained inside of the first larger compartment 2, which second smaller compartment 6 is arranged to be filled when the first larger compartment 2 is in its releasing position.
  • an open bottom side 20 of the first large compartment 2 is the longest side of the first larger compartment 2.
  • the second smaller compartment 6 has an open side 60 which is the bottom side of the smaller compartment 6 when the first larger compartment 2 is in its releasing position, preferably wherein the open side 60 is the longest side of the smaller compartment 6.
  • the pivoting element 5 is arranged closer to a middle point 7 of a longitudinal cross section than any of two end points 8, 9 of the longitudinal cross section.
  • figs. 2a - c there are shown different side views of an embodiment such as the one shown in fig. 1 .

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

La présente invention concerne un dispositif de mesure de débit de gaz (1) destiné à mesurer des écoulements de gaz dans un espace humide par déplacement de liquide, ledit dispositif de mesure de débit de gaz (1) comportant un premier compartiment plus grand (2) présentant un volume géométrique interne précis et prédéfini, le premier compartiment plus grand (2) comportant une extrémité d'accumulation de gaz (3) et une extrémité de levage (4) et comportant un élément pivotant (5) permettant au premier compartiment plus grand (2) de pivoter vers le haut vers une position de distribution dans laquelle le gaz contenu dans le premier compartiment plus grand (2) est distribué, puis vers le bas vers sa position initiale prêt a être rempli à nouveau de gaz, ledit premier compartiment plus grand (2) fonctionnant en fonction de l'effet de levier, ledit dispositif de mesure de débit de gaz (1) comprenant également un second compartiment plus réduit (6) contenu a l'intérieur du premier compartiment plus grand (2), ledit second compartiment plus réduit (6) étant conçu pour être rempli lorsque le premier compartiment plus grand (2) se trouve dans sa position de distribution.
PCT/SE2023/050274 2022-04-05 2023-03-28 Dispositif de mesure d'écoulement de gaz destiné à mesurer des écoulements de gaz dans un espace humide par déplacement de liquide WO2023195889A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE2250432 2022-04-05
SE2250432-8 2022-04-05

Publications (1)

Publication Number Publication Date
WO2023195889A1 true WO2023195889A1 (fr) 2023-10-12

Family

ID=88243311

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2023/050274 WO2023195889A1 (fr) 2022-04-05 2023-03-28 Dispositif de mesure d'écoulement de gaz destiné à mesurer des écoulements de gaz dans un espace humide par déplacement de liquide

Country Status (1)

Country Link
WO (1) WO2023195889A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010120229A1 (fr) * 2009-04-14 2010-10-21 Bioprocess Control Sweden Ab Dispositif pour mesurer un flux de gaz ultra-lent
GB2530571A (en) * 2014-09-29 2016-03-30 Univ Ljubljana Gas analysis device
WO2017200464A1 (fr) * 2016-05-20 2017-11-23 Bioprocess Control Sweden Ab Procédé de mesure de gaz pour fermentation discontinue et plateformes d'analyse in vitro
CN109029595A (zh) * 2018-09-13 2018-12-18 山东建华阀门制造有限公司 一种气体微流量计量装置
CN112284482A (zh) * 2020-11-16 2021-01-29 碧普华瑞环境技术（北京）有限公司 气体测量装置
CN214666973U (zh) * 2021-03-22 2021-11-09 碧普仪器(海宁)有限公司 一种测量微量气体的流量计

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010120229A1 (fr) * 2009-04-14 2010-10-21 Bioprocess Control Sweden Ab Dispositif pour mesurer un flux de gaz ultra-lent
GB2530571A (en) * 2014-09-29 2016-03-30 Univ Ljubljana Gas analysis device
WO2017200464A1 (fr) * 2016-05-20 2017-11-23 Bioprocess Control Sweden Ab Procédé de mesure de gaz pour fermentation discontinue et plateformes d'analyse in vitro
CN109029595A (zh) * 2018-09-13 2018-12-18 山东建华阀门制造有限公司 一种气体微流量计量装置
CN112284482A (zh) * 2020-11-16 2021-01-29 碧普华瑞环境技术（北京）有限公司 气体测量装置
CN214666973U (zh) * 2021-03-22 2021-11-09 碧普仪器(海宁)有限公司 一种测量微量气体的流量计

Similar Documents

Publication Publication Date Title
US8534497B2 (en) Dispensing method and apparatus utilizing a sensor to determine a time that a dispensing valve is open
AU2013319912A1 (en) Fluid level sensing apparatus and method of using the same for inkjet printing systems
TW200815737A (en) Assembly for measuring the specific gravity and level of a liquid
CN103076054B (zh) 一种测量微量气体的方法
WO2023195889A1 (fr) Dispositif de mesure d'écoulement de gaz destiné à mesurer des écoulements de gaz dans un espace humide par déplacement de liquide
CN101625299A (zh) 泥沙含量动态检测装置
US4064750A (en) Gas flow totalizer
CN211324418U (zh) 液体饮用机全自动注液系统和液体饮用机
CN109491414A (zh) 一种蓄水量控制系统
JP6223041B2 (ja) 液体計量装置及び水質分析装置
NL1027469C2 (nl) Werkwijze en inrichting voor het opwekken van energie uit een beweging van een medium zoals zeewater.
CN110720840A (zh) 液体饮用机全自动注液方法、装置和液体饮用机
CN214951540U (zh) 一种地热水水气分离与气体含量测量装置
CN110307880A (zh) 适用于高含水实验的计量装置及计量方法
CN110736503A (zh) 一种持续测气体的装置
CN110455679A (zh) 一种用于柔性制造系统的密度检测设备及其方法
CN203490148U (zh) 便携式密度测量装置
CN108216896A (zh) 能实现定量取液的药液瓶
KR102668297B1 (ko) 액체 폐자원 수거장치 및 그 제어방법
NL2023816B1 (nl) Apparaat/machine om water horizontaal en naar boven mee te verplaatsen.
CN216805878U (zh) 一种香精分离设备
KR20120005971U (ko) 계량기능이 구비되는 액체용기
NL1042666B1 (nl) Apparaat/machine om water horizontaal en naar boven mee te verplaatsen.
RU2108548C1 (ru) Дозатор жидкости
CN115783427A (zh) 一种自动化液态食品包装检测机构

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23785077

Country of ref document: EP

Kind code of ref document: A1