WO2009013072A1 - Procédé et dispositif de mesure indirecte de l'épuisement du moyen de filtration d'un filtre - Google Patents

Procédé et dispositif de mesure indirecte de l'épuisement du moyen de filtration d'un filtre Download PDF

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Publication number
WO2009013072A1
WO2009013072A1 PCT/EP2008/057531 EP2008057531W WO2009013072A1 WO 2009013072 A1 WO2009013072 A1 WO 2009013072A1 EP 2008057531 W EP2008057531 W EP 2008057531W WO 2009013072 A1 WO2009013072 A1 WO 2009013072A1
Authority
WO
WIPO (PCT)
Prior art keywords
measuring
volume
filter
pressure
measuring head
Prior art date
Application number
PCT/EP2008/057531
Other languages
German (de)
English (en)
Inventor
Roger Prokasky
Original Assignee
Brita Gmbh
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 Brita Gmbh filed Critical Brita Gmbh
Publication of WO2009013072A1 publication Critical patent/WO2009013072A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/07—Integration to give total flow, e.g. using mechanically-operated integrating mechanism
    • G01F15/075—Integration to give total flow, e.g. using mechanically-operated integrating mechanism using electrically-operated integrating means
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • 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
    • G01F1/46—Pitot tubes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/03—Pressure
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/16—Regeneration of sorbents, filters

Definitions

  • a filter is understood in particular also filter cartridges.
  • Devices for the treatment of water have a filter into which a raw water flows and flows out of the filter filtered water.
  • the filters or filter cartridges are filled with filter medium which removes pollutants from the raw water by way of adsorption and / or absorption.
  • Typical filter media for drinking water are in granular form and are used for chemical and / or mechanical removal and / or reduction of organic and / or inorganic impurities.
  • the filter capacity of the filter medium is exhausted after the flow of a certain amount of raw water, ie a maximum volume V m , so that the filter cartridge must be replaced.
  • V m a certain amount of raw water
  • the object of the invention is to provide a device for the indirect measurement of the exhaustion of a filter medium of filters, which is simple and compact, allows the most accurate detection of the amount of water, is reliable and subject to no wear.
  • the object also relates to the provision of a corresponding measuring method.
  • a device for the indirect measurement of the exhaustion of the filter medium of a filter which is characterized by a measuring cell through which the liquid can flow, a rod-shaped measuring head having a lateral surface which is arranged perpendicular to the flow direction of the liquid in the measuring cell Measuring head are arranged at least two pressure measuring channels, which open into measuring openings in the lateral surface of the measuring head, a pressure measuring device which is connected to the measuring channels, an evaluation device which is electrically connected to the pressure measuring device, and for determining the volume V of Liquid from the pressure measurement signals starting from a time t 0 , at which the filter is put into operation, over a period of time t and for comparing the volume V with the maximum volume V m is formed and a display device which is electrically connected to the evaluation device.
  • the volume flow Q is calculated with the flow cross-section A.
  • a rod-shaped measuring head which is arranged perpendicular to the flow direction of the liquid is compact and does not require within the flow cross-section own holding device, which may affect the flow adversely.
  • a rod has the advantage that it has a continuous constant cross section, so that the receiving opening in the measuring cell can be adapted to the cross section and a simple assembly can be achieved by inserting the measuring head into the measuring cell.
  • a rod-shaped measuring head is both manufacturing technology advantageous and easy to install.
  • the pressure measuring channels can be produced in a simple manner, for example by drilling, in the measurement head consisting of solid material.
  • the rod can for example be made of an extruded profile of plastic or metal, wherein over the length of the rod, an adaptation to the relevant flow cross section into which the rod is inserted, can be made.
  • the rod-shaped measuring head extends through the entire cross section of the measuring cell.
  • the flow cross section is thereby divided into two equal area sections.
  • the measuring cell is preferably formed by a support tube, the z. B. can be installed in a water pipe. Such a support tube is therefore provided with corresponding connection means.
  • the support tube For insertion of the rod-shaped measuring head, the support tube has a corresponding, preferably adapted to the cross section of the measuring head, receiving opening.
  • the carrier tube may have a mounting platform, which preferably has fastening means for the measuring head.
  • a mounting platform which preferably has fastening means for the measuring head.
  • the measuring head is attached to a base body which rests upon insertion of the measuring head on the mounting platform and can be fixed there.
  • the main body is also preferably designed for receiving the pressure measuring device.
  • At least two measuring openings are arranged at an angle of 90 ° in the lateral surface of the rod-shaped measuring head.
  • a first pressure measuring channel opens on the inflow side into the lateral surface and serves to measure the total pressure PQ.
  • a rod has the further advantage that it can be given a streamlined profile in a simple manner, so that the volume flow to be measured can be measured with little pressure loss.
  • the rod-shaped measuring head has a cylindrical cross-section.
  • the first measuring opening is arranged in the vertex of the strongly curved peripheral section and a second measuring opening is arranged in the vertex of the slightly curved peripheral section of the rod-shaped measuring head.
  • the pressure measuring device may be a differential pressure measuring device, wherein the difference of the two pressures in the first and second pressure measuring channels is determined.
  • the pressure measuring device may also comprise at least two pressure measuring sensors, which are also arranged at the outlet of the pressure measuring channels.
  • the evaluation device can be arranged on or in the main body. However, the evaluation device can also be arranged spatially remote from the body and be connected via cable, radio or the like with the pressure measuring device.
  • the display device and the evaluation device can form an integrated device. It is thereby possible to read the measurement result directly at the evaluation device.
  • the display device can also be arranged remotely from the evaluation device and be connected to the evaluation device via cable, radio or the like.
  • a guide body In front of the measuring cell may preferably be arranged a guide body.
  • This guide body has the task to equalize the flow of liquid. Turbulence or the like is dissolved by the guide body, whereby the measurement result is improved.
  • the method for the indirect measurement of the exhaustion of a filter means of a filter, wherein the exhaustion occurs after flowing through a maximum flow V m of the liquid is characterized in that according to the principle of a Prandtl probe the volume flow Q of the liquid is measured that from the volume flow Q starting from a time to, in which the filter is put into operation, determined over the time t, the volume V of the liquid and the volume V is continuously compared with the maximum volume V m and the latest when reaching the maximum volume V m, the comparison result is displayed.
  • the static pressure Ps is preferably measured at at least two measuring points. These two measuring points are formed by the two second measuring openings.
  • FIG. 1 shows a measuring device installed in a water line
  • FIG. 2 shows a perspective view of the measuring device
  • FIG. 3 shows an exploded view of the measuring device
  • FIG. 4 shows a side view of the measuring device
  • FIG. 5 shows a section through that shown in FIG
  • FIG. 6 shows a side view of the measuring device according to a further embodiment
  • FIG. 7 shows a section through that shown in FIG
  • FIG. 8 shows a section through the measuring head of FIG. 5 along the line VIII-VIII
  • the measuring device 1 is thus connected upstream of the filter 3 and determines the volume V of the liquid flowing through the filter.
  • the actual measuring device 5 has the main body 4 with the measuring head 6, which is designed as a rod. This measuring device 5 is inserted with the measuring head 6 in the receiving opening 24 of the support tube 22 until the bottom of the base body 4 rests on the top of the mounting platform 23.
  • the main body 4 accommodates the pressure measuring device 40, which communicates with the pressure measuring channels located in the interior of the measuring head 6 (see FIG. 5).
  • the pressure measuring channels which can not be seen in FIG. 3, open into the measuring openings 13 and 15 in the lateral surface 8 of the measuring head 6. The details of the measuring head 6 are explained in more detail in the following figures.
  • the measuring device 1 comprises the evaluation device 30, which is electrically connected to the measuring device 5, in particular to the pressure measuring device 40.
  • FIG. 4 shows a side view of the measuring device 1. It can be seen that the measuring head 6 extends within the measuring cell 20 through the entire flow cross section. The measuring head 6 divides the flow cross-section into the two halves with the cross-sectional areas A / 2.
  • FIG. 5 shows a section through the measuring device 1 shown in FIG. 4 along the line VV. The measuring head 6 is located in the receiving opening 24, the inner dimensions of which are adapted to the outer contour of the measuring head 6. The measuring head 6 extends through the entire flow cross-section and projects into a recess 21 located inside the support tube 22. The end face 9 of the measuring head thus lies within the recess 21.
  • the first measuring opening 13 is arranged, through which the pressure measuring channel 12 with the horizontal and vertical channel sections 12a, 12b opens into the lateral surface 8 of the measuring head 6.
  • the measuring channel 12 is used to measure the total pressure PQ.
  • a second pressure measuring channel 14 is provided, which also consists of a horizontal and a vertical channel section 14a, 14b.
  • the channel section 14b opens via the measuring opening 15 (not shown) in the lateral surface 8 of the measuring head 6.
  • the two channel sections 12a and 14a are arranged at right angles to each other.
  • the base body 4 connects, which is formed substantially rectangular and has an interior space 45 which is surrounded by the peripheral wall 44 and the bottom wall 43.
  • the pressure measuring device 40 consisting of the two pressure measuring sensors 41 and 42 which are connected to the respective measuring channels 12 and 14.
  • the main body 4 rests on the mounting platform 23 and is sealed by means of a sealing ring located in the annular groove 29.
  • FIGS. 6 and 7 show the illustrations corresponding to FIGS. 5 and 6 of a further embodiment.
  • the measuring head 6 does not extend completely. constantly through the flow cross section.
  • the end face 9 is arranged at a distance from the tube inner wall of the carrier tube 22.
  • FIG. 8 shows the oval cross section along the line VIII-VIII of the measuring head 6 shown in FIG.
  • the section lies in the plane of the horizontal channel sections 12a, 14a. It can be seen that the channel sections 12a, 14a and the corresponding measuring openings 13 and 15 are at a right angle to each other. The flow direction is indicated in this figure as well as in other figures by an arrow.
  • the first measuring opening 13 is located at the apex 7a of the strongly curved peripheral section 8a, while the second measuring opening 15 is arranged at the apex 7b of the slightly curved peripheral section 8b.
  • FIG. 9 shows a further embodiment in which, opposite the second measuring opening 15, a further second measuring opening 17 with a corresponding channel section 16a of the pressure measuring channel 16 is arranged. Since the passage portion 16a opens into the passage portion 14a, the pressure sensing passage 16 in the embodiment consists only of the passage portion 16a.
  • the two pressure measuring channels 14 and 16 both serve to measure the static pressure Ps, wherein from the pressure difference, an offset of the measuring head 6 can be detected within the measuring cell, which is due for example to tolerances. Via a corresponding correction factor, the flow velocity can be corrected accordingly.
  • FIG. 10 shows a further embodiment in which the cross-section is drop-shaped.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Measuring Fluid Pressure (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

L'invention concerne un dispositif (1) de mesure de l'épuisement du moyen de filtration d'un filtre (3), dans lequel l'épuisement survient après qu'un volume maximum Vm de liquide l'a traversé. Le dispositif comprend une cellule de mesure (20) qui peut être traversée par le liquide, une tête de mesure (6) en forme de barreau, présentant une surface d'enveloppe (8) et disposée perpendiculairement à la direction d'écoulement du liquide dans la cellule de mesure (20). Dans la tête de mesure (6) sont disposés au moins deux canaux (12, 14, 16) de mesure de pression qui débouchent dans des ouvertures de mesure (13, 15, 17) ménagées dans la surface d'enveloppe (8) de la tête de mesure (6). Est en outre prévu un dispositif (40) de mesure de pression qui est raccordé aux canaux de mesure (12, 14, 16) ainsi qu'un dispositif d'évaluation (30) qui est raccordé électriquement au dispositif de mesure de pression (40) et qui est configuré pour déterminer le volume V du liquide à partir des signaux de mesure de pression pendant une durée t qui commence à un instant t0 auquel le filtre (3) a été mis en fonctionnement, et pour comparer le volume V au volume maximum Vm. En outre est prévu un dispositif d'affichage (32) qui est raccordé électriquement au dispositif d'évaluation (30). L'invention concerne également un procédé de mesure indirecte de l'épuisement du moyen de filtration d'un filtre.
PCT/EP2008/057531 2007-07-21 2008-06-16 Procédé et dispositif de mesure indirecte de l'épuisement du moyen de filtration d'un filtre WO2009013072A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007034158.1 2007-07-21
DE102007034158A DE102007034158B9 (de) 2007-07-21 2007-07-21 Vorrichtung zur indirekten Messung der Erschöpfung des Filtermittels eines Filters

Publications (1)

Publication Number Publication Date
WO2009013072A1 true WO2009013072A1 (fr) 2009-01-29

Family

ID=39874165

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/057531 WO2009013072A1 (fr) 2007-07-21 2008-06-16 Procédé et dispositif de mesure indirecte de l'épuisement du moyen de filtration d'un filtre

Country Status (4)

Country Link
AR (1) AR067593A1 (fr)
CL (1) CL2008002134A1 (fr)
DE (1) DE102007034158B9 (fr)
WO (1) WO2009013072A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104048705A (zh) * 2013-03-15 2014-09-17 迪特里奇标准公司 采用主元件连接平台的过程变量测量
CN104220851A (zh) * 2013-03-15 2014-12-17 迪特里奇标准公司 使用通用流量技术连接平台的过程变量测量
US8961781B2 (en) 2011-09-29 2015-02-24 Brita Lp Filter status techniques adapted for use with a container based filtration device
CN109387250A (zh) * 2018-09-21 2019-02-26 上海熊猫机械(集团)有限公司 液流管式计量表及其制造工艺

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2643688C1 (ru) * 2017-02-28 2018-02-05 Дмитрий Николаевич Репин Расходомер

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DE2842414A1 (de) * 1978-09-29 1980-05-22 Karlsruhe Augsburg Iweka Differenzdrucksonde
US4768386A (en) * 1986-08-14 1988-09-06 Cambridge Filter Corp. Air pressure measurement element and system incorporating same
EP0315175A2 (fr) * 1987-11-04 1989-05-10 Preso Industries Sonde à tube de Pitot auto-moyenneur de mesure du flux d'un fluide
WO2001094893A1 (fr) * 2000-06-05 2001-12-13 Hb Innovation Ltd. Systeme de debitmetre pour liquides
US20040249583A1 (en) * 1996-03-28 2004-12-09 Evren Eryurek Pressure transmitter with diagnostics
DE10350884A1 (de) * 2003-10-31 2005-06-16 Gebrüder Heyl Analysentechnik GmbH & Co KG Verfahren und Vorrichtung zur Steuerung einer Wasseraufbereitungsanlage
WO2005085139A1 (fr) * 2004-03-06 2005-09-15 Aqua Select Gmbh Dispositif de purification d'eau

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
US4918426A (en) * 1988-05-02 1990-04-17 Amway Corporation Method and apparatus for sensing fluid flow volume to indicate end of filter life
JPH11108712A (ja) * 1997-09-30 1999-04-23 Hino Motors Ltd 流体の流量計測装置
DE19819098A1 (de) * 1998-04-29 1999-11-11 Brita Gmbh Wasserreinigungsvorrichtung mit Mitteln zur Anzeige der Erschöpfung des Reinigungsmittels
WO2001034272A1 (fr) * 1999-10-27 2001-05-17 James Reidy Dispositif de surveillance de filtre a eau
DE102005035045B9 (de) * 2005-07-27 2007-11-08 Brita Gmbh Messvorrichtung für die Bestimmung von Durchflussmengen elektrisch leitender Flüssigkeiten, Messelement und Verfahren

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2842414A1 (de) * 1978-09-29 1980-05-22 Karlsruhe Augsburg Iweka Differenzdrucksonde
US4768386A (en) * 1986-08-14 1988-09-06 Cambridge Filter Corp. Air pressure measurement element and system incorporating same
EP0315175A2 (fr) * 1987-11-04 1989-05-10 Preso Industries Sonde à tube de Pitot auto-moyenneur de mesure du flux d'un fluide
US20040249583A1 (en) * 1996-03-28 2004-12-09 Evren Eryurek Pressure transmitter with diagnostics
WO2001094893A1 (fr) * 2000-06-05 2001-12-13 Hb Innovation Ltd. Systeme de debitmetre pour liquides
DE10350884A1 (de) * 2003-10-31 2005-06-16 Gebrüder Heyl Analysentechnik GmbH & Co KG Verfahren und Vorrichtung zur Steuerung einer Wasseraufbereitungsanlage
WO2005085139A1 (fr) * 2004-03-06 2005-09-15 Aqua Select Gmbh Dispositif de purification d'eau

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8961781B2 (en) 2011-09-29 2015-02-24 Brita Lp Filter status techniques adapted for use with a container based filtration device
CN104048705A (zh) * 2013-03-15 2014-09-17 迪特里奇标准公司 采用主元件连接平台的过程变量测量
CN104220851A (zh) * 2013-03-15 2014-12-17 迪特里奇标准公司 使用通用流量技术连接平台的过程变量测量
CN104220851B (zh) * 2013-03-15 2018-11-30 迪特里奇标准公司 使用通用流量技术连接平台的过程变量测量
CN109297557A (zh) * 2013-03-15 2019-02-01 迪特里奇标准公司 使用通用流量技术连接平台的过程变量测量
CN109387250A (zh) * 2018-09-21 2019-02-26 上海熊猫机械(集团)有限公司 液流管式计量表及其制造工艺

Also Published As

Publication number Publication date
AR067593A1 (es) 2009-10-14
DE102007034158B9 (de) 2013-01-24
DE102007034158A1 (de) 2009-01-22
DE102007034158B4 (de) 2012-11-08
CL2008002134A1 (es) 2009-10-23

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