EP2365855A1 - Method and apparatus for carrying out integrity tests - Google Patents

Method and apparatus for carrying out integrity tests

Info

Publication number
EP2365855A1
EP2365855A1 EP09752102A EP09752102A EP2365855A1 EP 2365855 A1 EP2365855 A1 EP 2365855A1 EP 09752102 A EP09752102 A EP 09752102A EP 09752102 A EP09752102 A EP 09752102A EP 2365855 A1 EP2365855 A1 EP 2365855A1
Authority
EP
European Patent Office
Prior art keywords
sound
filter
measured
vibration
filter element
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP09752102A
Other languages
German (de)
French (fr)
Inventor
Maik Jornitz
Jens Meyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sartorius Stedim Biotech GmbH
Original Assignee
Sartorius Stedim Biotech 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 Sartorius Stedim Biotech GmbH filed Critical Sartorius Stedim Biotech GmbH
Publication of EP2365855A1 publication Critical patent/EP2365855A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
    • B01D46/0086—Filter condition indicators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2407—Filter candles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42—Auxiliary equipment or operation thereof
    • B01D46/44—Auxiliary equipment or operation thereof controlling filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2273/00—Operation of filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2273/18—Testing of filters, filter elements, sealings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2273/00—Operation of filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2273/24—Making use of acoustic waves, e.g. for measurements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
    • G01N2015/084—Testing filters

Definitions

  • the invention relates to a method for carrying out integrity tests of at least one arranged within a filter housing filter element with porous Filtermate ⁇ alien, are provided in the means of sound measurement of sound generated by a test fluid when flowing through the filter element.
  • the invention further relates to a device for carrying out integrity tests of at least one filter element with porous filter materials arranged inside a filter housing, in which means are provided for measuring the sound generated by a test fluid when the filter element flows through it.
  • WO 94/11721 A1 discloses an apparatus and a method for carrying out integrity tests of filter elements with porous filter material arranged within a filter housing.
  • a wetted with a wetting solution filter element divides a Gehaucieenraum in an inlet side or a Unfiltratraum and an outlet or Filtratraum. Both sides can be filled with a test fluid creating a pressure differential between the emissive and exhaust sides so that the test fluid flows through the filter element hm, thereby generating sound from a sensor or microphone near the wetted filter element or in the lumen of an inlet tube or an outlet pipe is arranged, received and supplied as an electrical signal to a signal processing unit.
  • the signal processing unit analyzes the signal and determines whether the filter element is integer or not.
  • the disadvantage here is that a test is carried out here, which requires a wetted filter.
  • the pressure difference used or the pressure for the flow through the filter element must be less than the pressure at which the wetting agent is expelled from the largest pore of a homogeneous porous structure of the filter material.
  • EP 0 248 218 B1 likewise discloses a method and a device for carrying out integrity tests, in which a filter element, for example a hollow fiber membrane, is arranged in a housing interior. Again, a so-called bubble point test is performed. For this purpose, the filter material must be wetted with a wetting liquid here.
  • the sound intensity is measured in a liquid-filled housing interior with a microphone, wherein the gas space pressure is determined at which a sudden increase in the sound intensity can be determined.
  • WO 99/16538 Al a device and a method for the localization of defective filter elements within a plurality of filter elements, which are arranged in a housing known. Again, all arranged in a housing filter elements of a Wets liquid and are exposed to a gas pressure, the presence of defective filter elements during a diffusion test is acoustically detected by microphones.
  • JP 2006-218372 A discloses a method and a device for carrying out integrity tests of membrane filters arranged inside a filter housing.
  • the membrane filters divide a membrane module or filter housing into a non-filtrate space and into a filtrate space.
  • a gas flow between both chambers may be detected by means for measuring sound generated in the membrane module.
  • the object of the present invention is therefore to specify a method and a device which do not have the abovementioned disadvantages and in which, in particular, it is possible to carry out the method in the case of unwetted filter elements.
  • This object is achieved with respect to the method in connection with the preamble of claim 1 in that it is characterized by the following steps: a) loading a first side of the filter material of the filter element with a test fluid while maintaining a constant fluid pressure, b) measuring the the test fluids flowing through the filter fluid and / or the vibration with sensors and c) comparing the sound measured in step b) and / or the vibration with the sound measured under identical conditions and / or the vibration of an integral same filter element.
  • a test fluid can be used as the test fluid.
  • a test fluid is to use a test gas as the test fluid. For this it is not necessary, as in the known tests, to wet the filter elements before.
  • the sound is measured directly in the test fluid.
  • the sound can be measured with a sound sensor arranged inside the filter housing and / or in an inflow or outflow, for example a microphone which is designed as a piezo pickup.
  • the sound is measured indirectly as a body sound.
  • the body sound can be measured by means of sensors arranged on a filter housing wall and / or on inflow or outflow lines.
  • the body sound is measured without contact by laser vibration measurement.
  • vibration patterns arising at the filter elements and / or at the filter housing and / or at the inflows and / or outflows are measured.
  • the vibration patterns can be measured with vibration sensors, which are arranged directly on the filter elements, the filter housing or the inflow or outflow.
  • the vibration patterns can also be measured contactlessly with optical vibration sensors.
  • the object relating to the device is achieved in conjunction with the preamble of claim 14, characterized in that the sound and / or vibrations generated by the sound can be measured by contactless sensors as means for sound measurement.
  • contactless sensors as a means of sound measurement can also within the housing or the Filter element or the supply and discharge lines are omitted.
  • the contactless sensors are reusable while the filter housing interchangeable with filter element or at least the filter element, for example, as a disposable filter element are inexpensive exchangeable.
  • the sensors are designed as optical vibration sensors in conjunction with a laser vibration measurement.
  • Figure 1 a schematic side view of a
  • Figure 2 a schematic side view of a
  • An apparatus 1 for carrying out integrity tests consists essentially of a housing 2, a filter element 3, an inlet 4, a drain 5, sensors 6 and a signal processing unit 7.
  • the filter element 3 is arranged in a housing interior 8 of the housing 2.
  • the filter element 3 with porous filter material divides the interior of the housing 8 into a non-filtrate space 9 and a filtrate space 10 arranged centrally in the filter element 3.
  • the filtrate space 9 is connected to the inlet 4 and the filtrate space 10 is connected to the outlet 5.
  • the sensors 6 are connected via signal lines 13 to the signal processing unit 7 in connection.
  • the signal lines 13 can also be designed as wireless connections.
  • FIG. 1 Although a plurality of sensors 6 are shown in FIG. 1, a single sensor 6 is sufficient for carrying out an integrity test with a single filter element 3.
  • a further sensor 18 is shown, which can be arranged outside at the outflow 12 or within the outflow 5. It is also possible to arrange a sensor 19 in the filter element 3 or in the filtrate space 10.
  • a contactless sensor 20 is shown by way of example in FIG. 1, which optically scans the housing wall 17 of the housing 2 and forwards the measured vibrations of the housing wall 17 via the signal line 13 to the signal processing unit 7.
  • the exemplary embodiment of Figure 2 shows a device 1 'with a housing 2', in the housing interior 8 'three filter elements 3' are arranged. If only one sensor 6 is used, it can at least be determined when carrying out an integrity test whether the group of three filter elements 3 'has an integer. As far as the integrity of a single filter element 3 'is to be determined, each filter element 3', a sensor 6 is assigned.
  • a test fluid is supplied to the non-filtrate space 9 via the inflow space 9 while maintaining a constant fluid pressure, so that a fluid pressure is applied to a first side of the filter material 3, 3 'facing the unfiltrate 9.
  • the test fluid flows through the filter element 3, 3 'or its filter materials and causes sound or vibrations.
  • the sound and / or the vibration caused is measured with the sensors 6 and compared in a subsequent step with the measured sound and / or vibration with the sound measured under identical conditions and / or the vibration of an integral same filter element. That the sound or the vibration is detected by the sensors 6 and forwarded via the signal line 13 to the signal processing unit 7 in which sound or vibration values measured under identical conditions are stored, so that a comparison can take place in the signal processing unit 7.

Abstract

The invention relates to a method and an apparatus for carrying out integrity tests of at least one filter element which is arranged within a filter housing and comprises porous filter materials, in which means for acoustic measurement of sound generated by a test fluid on flowing through the filter element are provided. The method comprises the steps: a) exposure of a first side of the filter materials of the filter element to a test fluid while maintaining a constant fluid pressure, b) measurement of the sound produced by the test fluid flowing through the filter materials and/or the vibration by means of sensors and c) comparison of the sound measured in step b) and/or the vibration with the sound measured under identical conditions and/or the vibration of an integral identical filter element.

Description

Verfahren und Vorrichtung zur Durchfuhrung von IntegritatstestsMethod and device for carrying out integrity tests
Die Erfindung betrifft ein Verfahren zur Durchfuhrung von Integritatstests von mindestens einem innerhalb eines Filtergehauses angeordneten Filterelement mit porösen Filtermateπalien, bei dem Mittel zur Schallmessung von durch ein Testfluid bei Durchstromung des Filterelementes erzeugten Schalls vorgesehen sind.The invention relates to a method for carrying out integrity tests of at least one arranged within a filter housing filter element with porous Filtermateπalien, are provided in the means of sound measurement of sound generated by a test fluid when flowing through the filter element.
Die Erfindung betrifft weiterhin eine Vorrichtung zur Durchfuhrung von Integritatstests von mindestens einem innerhalb eines Filtergehauses angeordneten Filterelement mit porösen Filtermateπalien, bei der Mittel zur Schallmessung von durch ein Testfluid bei Durchstromung des Filterelementes erzeugten Schalls vorgesehen sind.The invention further relates to a device for carrying out integrity tests of at least one filter element with porous filter materials arranged inside a filter housing, in which means are provided for measuring the sound generated by a test fluid when the filter element flows through it.
Aus der WO 94/11721 Al ist eine Vorrichtung und ein Verfahren zur Durchfuhrung von Integritatstests von innerhalb eines Filtergehauses angeordneten Filterelementen mit porösem Filtermaterial bekannt. Dabei unterteilt ein mit einer Benetzungslosung benetztes Filterelement einen Gehausemnenraum in eine Einlassseite bzw. einen Unfiltratraum und eine Auslassseite bzw. Filtratraum. Beide Seiten können mit einem Testfluid gefüllt werden, wobei eine Druckdifferenz zwischen der Emlass- und der Auslassseite erzeugt wird, so dass das Testfluid durch das Filterelement hmdurchstromt , wobei dabei erzeugter Schall von einem Sensor bzw. einem Mikrofon, das m der Nahe des benetzten Filterelementes bzw. im Lumen eines Einlassrohres oder eines Auslassrohres angeordnet ist, aufgenommen und als elektrisches Signal einer Signalverarbeitungseinheit zugeführt wird. Die Signalverarbeitungseinheit analysiert das Signal und stellt fest, ob das Filterelement integer ist oder nicht.WO 94/11721 A1 discloses an apparatus and a method for carrying out integrity tests of filter elements with porous filter material arranged within a filter housing. In this case, a wetted with a wetting solution filter element divides a Gehausemnenraum in an inlet side or a Unfiltratraum and an outlet or Filtratraum. Both sides can be filled with a test fluid creating a pressure differential between the emissive and exhaust sides so that the test fluid flows through the filter element hm, thereby generating sound from a sensor or microphone near the wetted filter element or in the lumen of an inlet tube or an outlet pipe is arranged, received and supplied as an electrical signal to a signal processing unit. The signal processing unit analyzes the signal and determines whether the filter element is integer or not.
Nachteilig dabei ist, dass hier ein Test durchgeführt wird, der einen benetzten Filter benotigt. Die verwendete Druckdifferenz bzw. der Druck zur Durchstromung des Filterelementes muss dabei geringer sein als der Druck, bei welchem das Benetzungsmittel aus der größten Pore einer homogenen porösen Struktur des Filtermaterials ausgetrieben wird.The disadvantage here is that a test is carried out here, which requires a wetted filter. The pressure difference used or the pressure for the flow through the filter element must be less than the pressure at which the wetting agent is expelled from the largest pore of a homogeneous porous structure of the filter material.
Weiterhin ist aus der EP 0 248 218 Bl ebenfalls ein Verfahren und eine Vorrichtung zur Durchfuhrung von Integritatstests bekannt, bei dem ein Filterelement, beispielsweise eine Hohlfadenmembran in einem Gehauseinnenraum angeordnet ist. Auch hier wird ein sogenannter Bubble Point-Test durchgeführt. Dazu muss auch hier das Filtermaterial mit einer benetzenden Flüssigkeit benetzt werden. Wahrend einer zeitlichen Erhöhung des Gasraumdruckes wird die Schallintensität in einem mit Flüssigkeit gefüllten Gehauseinnenraum mit einem Mikrofon gemessen, wobei der Gasraumdruck bestimmt wird, bei dem eine sprunghafte Erhöhung der Schallintensität feststellbar ist.Furthermore, EP 0 248 218 B1 likewise discloses a method and a device for carrying out integrity tests, in which a filter element, for example a hollow fiber membrane, is arranged in a housing interior. Again, a so-called bubble point test is performed. For this purpose, the filter material must be wetted with a wetting liquid here. During a time increase of the gas space pressure, the sound intensity is measured in a liquid-filled housing interior with a microphone, wherein the gas space pressure is determined at which a sudden increase in the sound intensity can be determined.
Weiterhin ist aus der WO 99/16538 Al eine Vorrichtung und ein Verfahren zur Lokalisierung defekter Filterelemente innerhalb einer Mehrzahl von Filterelementen, die in einem Gehäuse angeordnet sind, bekannt. Auch hier sind alle in einem Gehäuse angeordneten Filterelemente von einer Flüssigkeit benetzt und werden einem Gasdruck ausgesetzt, wobei das Vorhandensein defekter Filterelemente während eines Diffusiontestes akustisch durch Mikrofone erkannt wird .Furthermore, from WO 99/16538 Al a device and a method for the localization of defective filter elements within a plurality of filter elements, which are arranged in a housing known. Again, all arranged in a housing filter elements of a Wets liquid and are exposed to a gas pressure, the presence of defective filter elements during a diffusion test is acoustically detected by microphones.
Weiterhin ist aus der JP 2006-218372 A (Abstract) ein Verfahren und eine Vorrichtung zur Durchführung von Integritätstests von innerhalb eines Filtergehäuses angeordnetem Membranfilter bekannt. Die Membranfilter teilen ein Membranmodul bzw. Filtergehäuse in einen Unfiltratraum und in einen Filtratraum. Ein Gasfluss zwischen beiden Kammern kann mit Mitteln zur Messung von Schall, der in dem Membranmodul erzeugt wird, festgestellt werden .Furthermore, JP 2006-218372 A (Abstract) discloses a method and a device for carrying out integrity tests of membrane filters arranged inside a filter housing. The membrane filters divide a membrane module or filter housing into a non-filtrate space and into a filtrate space. A gas flow between both chambers may be detected by means for measuring sound generated in the membrane module.
Nachteilig ist auch hier, dass die Filterelemente offenbar benetzt werden müssen.Another disadvantage here is that the filter elements must obviously be wetted.
Aufgabe der vorliegenden Erfindung ist es daher, ein Verfahren und eine Vorrichtung anzugeben, die die oben erwähnten Nachteile nicht aufweisen und wobei insbesondere eine Durchführung des Verfahrens bei unbenetzten Filterelementen möglich ist.The object of the present invention is therefore to specify a method and a device which do not have the abovementioned disadvantages and in which, in particular, it is possible to carry out the method in the case of unwetted filter elements.
Diese Aufgabe wird bezüglich des Verfahrens in Verbindung mit dem Oberbegriff des Anspruches 1 dadurch gelöst, dass es durch die folgenden Schritte gekennzeichnet ist: a) Beaufschlagen einer ersten Seite der Filtermaterialien des Filterelements mit einem Testfluid unter Aufrechterhaltung eines konstanten Fluiddrucks, b) Messen des von dem die Filtermaterialien durchströmenden Testfluids verursachten Schalls und/oder der Vibration mit Sensoren und c) Vergleichen des in Schritt b) gemessenen Schalls und/oder der Vibration mit dem unter identischen Bedingungen gemessenen Schall und/oder der Vibration eines integeren gleichen Filterelementes.This object is achieved with respect to the method in connection with the preamble of claim 1 in that it is characterized by the following steps: a) loading a first side of the filter material of the filter element with a test fluid while maintaining a constant fluid pressure, b) measuring the the test fluids flowing through the filter fluid and / or the vibration with sensors and c) comparing the sound measured in step b) and / or the vibration with the sound measured under identical conditions and / or the vibration of an integral same filter element.
Im Gegensatz zu den bekannten Testverfahren wie Bubble Point-Test und Diffusiontest ist es beim erfindungsgemaßen Verfahren nicht notwendig, die Filterelemente vor dem Test zu benetzen. Das Geräusch bzw. der Schall der erfindungsgemaßen Fluidstromung variiert in seiner spektralen Zusammensetzung bzw. Frequenzen und/oder seiner Hohe falls Veränderungen im Filtersystem auftreten, die benutzt werden können, um die Integrität des gesamten Filtersystem oder eines einzelnen Filterelementes zu bestimmen. Die Grundlage der Schallstarke und seines Spektrums kann durch Vergleich des gemessenen Schalls und/oder der Frequenzen bzw. Vibration mit unter identischen Bedingungen gemessenen Schall und/oder Vibrationen eines integren gleichen Filterelementes bestimmt werden, damit lässt sich relativ einfach und sicher die Integrität eines Filterelementes testen. Gemäß einer bevorzugten Ausfuhrungsform der Erfindung kann als Testfluid eine Testflussigkeit verwendet werden. Von besonderem Vorteil ist jedoch als Testfluid ein Testgas zu verwenden. Hierzu ist es nicht notwendig, wie bei den bekannten Tests, die Filterelemente vorher zu benetzen.In contrast to the known test methods such as bubble point test and diffusion test, it is not necessary in the method according to the invention to wet the filter elements before the test. The noise of the fluid flow according to the invention varies in its spectral composition or frequencies and / or its magnitude if changes occur in the filter system that can be used to determine the integrity of the entire filter system or a single filter element. The basis of the sound intensity and its spectrum can be determined by comparing the measured sound and / or the frequencies or vibration with identical sound and / or vibrations of an integral same filter element, so that it is relatively easy and safe to test the integrity of a filter element , According to a preferred embodiment of the invention, a test fluid can be used as the test fluid. Of particular advantage, however, is to use a test gas as the test fluid. For this it is not necessary, as in the known tests, to wet the filter elements before.
Nach einer weiteren bevorzugten Ausfuhrungsform der Erfindung wird der Schall im Testfluid direkt gemessen. Dabei kann der Schall mit einem innerhalb des Filtergehauses und/oder in einem Zu- oder Abfluss angeordneten Schallsensor, beispielsweise einem Mikrofon, das als Piezoaufnehmer ausgebildet ist, gemessen werden. Nach einer weiteren bevorzugten Ausfuhrungsform der Erfindung wird der Schall als Korperschall indirekt gemessen. Dabei kann der Korperschall mithilfe an einer Filtergehausewandung und/oder an Zu- oder Abflussleitungen angeordneten Sensoren gemessen werden.According to a further preferred embodiment of the invention, the sound is measured directly in the test fluid. In this case, the sound can be measured with a sound sensor arranged inside the filter housing and / or in an inflow or outflow, for example a microphone which is designed as a piezo pickup. According to a further preferred embodiment of the invention, the sound is measured indirectly as a body sound. In this case, the body sound can be measured by means of sensors arranged on a filter housing wall and / or on inflow or outflow lines.
Gemäß einer weiteren bevorzugten Ausfuhrungsform der Erfindung wird der Korperschall beruhrungsfrei durch Laser- Vibrationsmessung gemessen.According to a further preferred embodiment of the invention, the body sound is measured without contact by laser vibration measurement.
Nach einer weiteren bevorzugten Ausfuhrungsform der Erfindung werden an den Filterelementen und/oder am Filtergehause und/oder an den Zu- und/oder Abflüssen entstehende Vibrationsmuster gemessen. Die Vibrationsmuster können dabei mit Vibrationssensoren gemessen werden, die direkt an den Filterelementen, dem Filtergehause oder dem Zu- oder Abfluss angeordnet sind.According to a further preferred embodiment of the invention, vibration patterns arising at the filter elements and / or at the filter housing and / or at the inflows and / or outflows are measured. The vibration patterns can be measured with vibration sensors, which are arranged directly on the filter elements, the filter housing or the inflow or outflow.
Gemäß einer weiteren bevorzugten Ausfuhrungsform der Erfindung können die Vibrationsmuster aber auch kontaktlos mit optischen Vibrationssensoren gemessen werden. Insbesondere ist es möglich, die Vibrationsmuster kontaktlos durch Laser-Vibrationsmessung zu bestimmen.According to a further preferred embodiment of the invention, however, the vibration patterns can also be measured contactlessly with optical vibration sensors. In particular, it is possible to determine the vibration pattern contactless by laser vibration measurement.
Die Aufgabe bezuglich der Vorrichtung wird in Verbindung mit dem Oberbegriff des Anspruches 14 dadurch gelost, dass der Schall und/oder durch den Schall erzeugte Vibrationen durch kontaktlose Sensoren als Mittel zur Schallmessung messbar sind.The object relating to the device is achieved in conjunction with the preamble of claim 14, characterized in that the sound and / or vibrations generated by the sound can be measured by contactless sensors as means for sound measurement.
Durch die Verwendung kontaktloser Sensoren als Mittel zur Schallmessung kann auch innerhalb des Gehäuses oder des Filterelementes oder der Zu- und Ableitungen verzichtet werden. Die kontaktlosen Sensoren sind wieder verwendbar wahrend das Filtergehause mit Filterelement oder zumindest das Filterelement austauschbar, beispielsweise als Einmal- Filterelement kostengünstig austauschbar sind.By using contactless sensors as a means of sound measurement can also within the housing or the Filter element or the supply and discharge lines are omitted. The contactless sensors are reusable while the filter housing interchangeable with filter element or at least the filter element, for example, as a disposable filter element are inexpensive exchangeable.
Gemäß einer bevorzugen Ausfuhrungsform der Erfindung sind die Sensoren dabei als optische Vibrationssensoren in Verbindung mit einer Laser-Vibrationsmessung ausgebildet.According to a preferred embodiment of the invention, the sensors are designed as optical vibration sensors in conjunction with a laser vibration measurement.
Weitere Merkmale der Erfindung ergeben sich aus der nachfolgenden ausfuhrlichen Beschreibung und den beigefugten Zeichnungen, in denen bevorzugte Ausfuhrungsformen der Erfindung beispielhaft veranschaulicht sind.Further features of the invention will become apparent from the following detailed description and the accompanying drawings, in which preferred embodiments of the invention are illustrated by way of example.
In den Zeichnungen zeigen:In the drawings show:
Figur 1: eine schematische Seitenansicht einerFigure 1: a schematic side view of a
Vorrichtung zur Durchfuhrung von Integritatstests mit einem einzelnenApparatus for carrying out integrity tests with a single
Filterelement undFilter element and
Figur 2: eine schematische Seitenansicht einerFigure 2: a schematic side view of a
Vorrichtung zur Durchfuhrung von Integritatstests mit einem Gehäuse mit dreiDevice for carrying out integrity tests with a housing with three
Filterelementen .Filter elements.
Eine Vorrichtung 1 zur Durchfuhrung von Integritatstests besteht im Wesentlichen aus einem Gehäuse 2, einem Filterelement 3, einem Zufluss 4, einem Abfluss 5, Sensoren 6 und einer Signalverarbeitungseinheit 7. Entsprechend dem Ausfuhrungsbeispiel der Figur 1 ist in einem Gehauseinnenraum 8 des Gehäuses 2 das Filterelement 3 angeordnet. Das Filterelement 3 mit porösem Filtermaterial unterteilt den Gehauseinnenraum 8 in einen Unfiltratraum 9 und einem zentrisch im Filterelement 3 angeordneten Filtratraum 10. Der ünfiltratraum 9 ist mit dem Zufluss 4 und der Filtratraum 10 ist mit dem Abfluss 5 verbunden. Die Sensoren 6 stehen über Signalleitungen 13 mit der Signalverarbeitungseinheit 7 in Verbindung. Die Signalleitungen 13 können auch als drahtlose Verbindungen ausgebildet sein.An apparatus 1 for carrying out integrity tests consists essentially of a housing 2, a filter element 3, an inlet 4, a drain 5, sensors 6 and a signal processing unit 7. According to the exemplary embodiment of FIG. 1, the filter element 3 is arranged in a housing interior 8 of the housing 2. The filter element 3 with porous filter material divides the interior of the housing 8 into a non-filtrate space 9 and a filtrate space 10 arranged centrally in the filter element 3. The filtrate space 9 is connected to the inlet 4 and the filtrate space 10 is connected to the outlet 5. The sensors 6 are connected via signal lines 13 to the signal processing unit 7 in connection. The signal lines 13 can also be designed as wireless connections.
Auch wenn in Figur 1 eine Mehrzahl von Sensoren 6 dargstellt ist, ist zur Durchfuhrung eines Integritatstests mit einem einzelnen Filterelement 3 ein einzelner Sensor 6 ausreichend .Although a plurality of sensors 6 are shown in FIG. 1, a single sensor 6 is sufficient for carrying out an integrity test with a single filter element 3.
Zur Korperschall- oder Vibrationsmessung hat sich ein an der Bodenplatte 14 außen angeordneter Sensor 15 bewahrt. Auch ist es möglich, zur Korperschall- oder Vibrationsmessung einen Sensor 16 außen an der Gehausewandung 17 des Gehäuses 2 anzuordnen.To Korperschall- or vibration measurement, a on the bottom plate 14 arranged outside sensor 15 has been preserved. It is also possible to arrange a sensor 16 on the outside of the housing wall 17 of the housing 2 for body sound or vibration measurement.
Exemplarisch ist ein weiterer Sensor 18 gezeigt, der außen am Abfluss 12 oder innerhalb des Abflusses 5 angeordnet sein kann. Auch ist es möglich, einen Sensor 19 im Filterelement 3 bzw. im Filtratraum 10 anzuordnen.By way of example, a further sensor 18 is shown, which can be arranged outside at the outflow 12 or within the outflow 5. It is also possible to arrange a sensor 19 in the filter element 3 or in the filtrate space 10.
Weiterhin exemplarisch ist in Figur 1 ein kontaktloser Sensor 20 dargestellt, der die Gehausewandung 17 des Gehäuse 2 optisch abtastet und die gemessenen Vibrationen der Gehausewandung 17 über die Signalleitung 13 an die Signalverarbeitungseinheit 7 weiterleitet. Das Ausfuhrungsbeispiel der Figur 2 zeigt eine Vorrichtung 1' mit einem Gehäuse 2', in dessen Gehauseinnenraum 8' drei Filterelemente 3' angeordnet sind. Bei Verwendung nur eines Sensors 6 kann bei Durchfuhrung eines Integritatstests zumindest festgestellt werden, ob die Gruppe von drei Filterelementen 3' integer ist. Soweit auch die Integrität eines einzelnen Filterelementes 3' festgestellt werden soll, wird jedem Filterelement 3' ein Sensor 6 zugeordnet.Furthermore, a contactless sensor 20 is shown by way of example in FIG. 1, which optically scans the housing wall 17 of the housing 2 and forwards the measured vibrations of the housing wall 17 via the signal line 13 to the signal processing unit 7. The exemplary embodiment of Figure 2 shows a device 1 'with a housing 2', in the housing interior 8 'three filter elements 3' are arranged. If only one sensor 6 is used, it can at least be determined when carrying out an integrity test whether the group of three filter elements 3 'has an integer. As far as the integrity of a single filter element 3 'is to be determined, each filter element 3', a sensor 6 is assigned.
Zur Durchfuhrung eines Integritatstests wird über den Zufluss 4 dem Unfiltratraum 9 unter Aufrechterhaltung eines konstanten Fluiddrucks ein Testfluid zugeführt, so dass eine dem Unfiltratraum 9 zugewandte erste Seite der Filtermaterialien des Filterelements 3, 3' mit dem Fluiddruck beaufschlagt wird. Dabei durchströmt das Testfluid das Filterelement 3, 3' bzw. dessen Filtermaterialien und verursacht Schall bzw. Vibrationen. Dabei wird der verursachte Schall und/oder die Vibration mit den Sensoren 6 gemessen und in einem anschließenden Schritt mit dem gemessenen Schall und/oder der Vibration mit dem unter identischen Bedingungen gemessenen Schall und/oder der Vibration eines integeren gleichen Filterelementes verglichen. D.h. der Schall bzw. die Vibration wird von den Sensoren 6 detektiert und über die Signalleitung 13 an die Signalverarbeitungseinheit 7 weitergeleitet, in der unter identischen Bedingungen gemessene Schall- oder Vibrationswerte abgespeichert sind, so dass in der Signalverarbeitungseinheit 7 ein Vergleich stattfinden kann. To carry out an integrity test, a test fluid is supplied to the non-filtrate space 9 via the inflow space 9 while maintaining a constant fluid pressure, so that a fluid pressure is applied to a first side of the filter material 3, 3 'facing the unfiltrate 9. The test fluid flows through the filter element 3, 3 'or its filter materials and causes sound or vibrations. In this case, the sound and / or the vibration caused is measured with the sensors 6 and compared in a subsequent step with the measured sound and / or vibration with the sound measured under identical conditions and / or the vibration of an integral same filter element. That the sound or the vibration is detected by the sensors 6 and forwarded via the signal line 13 to the signal processing unit 7 in which sound or vibration values measured under identical conditions are stored, so that a comparison can take place in the signal processing unit 7.

Claims

Patentansprüche claims
1. Verfahren zur Durchfuhrung von Integritatstests von mindestens einem innerhalb eines Filtergehauses (2, 2') angeordneten Filterelement (3, 3') mit porösen Filtermaterialien, bei dem Mittel zur Schallmessung von durch ein Testfluid bei Durchstromung des Filterelementes (3, 3') erzeugten Schalls vorgesehen sind, gekennzeichnet durch die folgenden Schritte: a) Beaufschlagen einer ersten Seite der Filtermaterialien des Filterelements (3, 3') mit einem Testfluid unter Aufrechterhaltung eines konstanten Fluiddrucks, b) Messen des von dem die Filtermateπalien durchströmenden Testfluids verursachten Schalls und/oder der Vibration mit Sensoren (6, 15, 16, 18, 19, 20) und c) Vergleichen des in Schritt b) gemessenen Schalls und/oder der Vibration mit dem unter identischen1. A method for carrying out integrity tests of at least one filter element (3, 3 ') arranged inside a filter housing (2, 2') with porous filter materials, in which means for measuring the sound of a test fluid passing through the filter element (3, 3 ') characterized by the following steps: a) applying a first side of the filter materials of the filter element (3, 3 ') with a test fluid while maintaining a constant fluid pressure, b) measuring the sound caused by the test fluid flowing through the filter media and / or or vibration with sensors (6, 15, 16, 18, 19, 20) and c) comparing the sound measured in step b) and / or the vibration with that under identical
Bedingungen gemessenen Schall und/oder derConditions measured sound and / or the
Vibration eines integeren gleichen FilterelementesVibration of an integral same filter element
(3, 3') .(3, 3 ').
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass als Testfluid eine Testflussigkeit verwendet wird.2. The method according to claim 1, characterized in that a test fluid is used as the test fluid.
3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass als Testfluid ein Testgas verwendet wird. 3. The method according to claim 1, characterized in that a test gas is used as the test fluid.
4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass die Filtermaterialien bei Verwendung eines Testgases nicht benetzt sind.4. The method according to claim 3, characterized in that the filter materials are not wetted when using a test gas.
5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Schall im Testfluid direkt gemessen wird.5. The method according to any one of claims 1 to 4, characterized in that the sound is measured directly in the test fluid.
6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass der Schall mit einem innerhalb des Filtergehäuses (2, 2') und/oder an jedem der Filterelemente (3, 3') und/oder in einem Zu- (4) oder Abfluss (5) angeordneten Schallsensor (6) gemessen wird.6. The method according to claim 5, characterized in that the sound with a within the filter housing (2, 2 ') and / or on each of the filter elements (3, 3') and / or in an inlet (4) or outflow ( 5) arranged sound sensor (6) is measured.
7. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Schall als Körperschall indirekt gemessen wird.7. The method according to any one of claims 1 to 4, characterized in that the sound is measured as structure-borne noise indirectly.
8. Verfahren nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass der Körperschall mit Hilfe an der Filtergehäusewandung (17) und/oder an Zu- (4) oder Abflussleitungen (5) angeordneten Sensoren (6, 15, 16, 18, 19, 20) gemessen wird.8. The method according to claim 6 or 7, characterized in that the structure-borne noise with the aid of the filter housing wall (17) and / or to supply (4) or drain lines (5) arranged sensors (6, 15, 16, 18, 19, 20) is measured.
9. Verfahren nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass der Körperschall berührungsfrei durch Laser- Vibrationsmessung gemessen wird. 9. The method according to claim 6 or 7, characterized in that the structure-borne sound is measured without contact by laser vibration measurement.
10. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass an den Filterelementen (3, 3' ) und/oder am10. The method according to any one of claims 1 to 4, characterized in that on the filter elements (3, 3 ') and / or on
Filtergehäuse (2, 2') und/oder an den Zu- (4) und/oder Abflüssen (5) entstehende Vibrationsmuster gemessen werden .Filter housing (2, 2 ') and / or at the inflow (4) and / or outflows (5) resulting vibration patterns are measured.
11. Verfahren nach Anspruch 10, dadurch gekennzeichnet, dass die Vibrationsmuster mit Vibrationssensoren (6, 18, 19, 20) gemessen werden, die direkt an den Filterelementen (3, 3'), dem Filtergehäuse (2, 2') oder dem Zu- (4) oder Abfluss (5) angeordnet sind.11. The method according to claim 10, characterized in that the vibration pattern with vibration sensors (6, 18, 19, 20) are measured, directly to the filter elements (3, 3 '), the filter housing (2, 2') or the Zu - (4) or drain (5) are arranged.
12. Verfahren nach Anspruch 10, dadurch gekennzeichnet, dass die Vibrationsmuster kontaktlos mit optischen Vibrationssensoren (20) gemessen werden.12. The method according to claim 10, characterized in that the vibration patterns are measured contactlessly with optical vibration sensors (20).
13. Verfahren nach Anspruch 12, dadurch gekennzeichnet, dass die Vibrationsmuster durch Laser-Vibrationsmessung gemessen werden.13. The method according to claim 12, characterized in that the vibration patterns are measured by laser vibration measurement.
14. Vorrichtung (1) zur Durchführung von Integritätstests von mindestens einem innerhalb eines Filtergehäuses (2, 2') angeordneten Filterelement (3, 3') mit porösen Filtermaterialien, bei der Mittel zur Schallmessung von durch ein Testfluid bei Durchströmung des Filterelementes (3, 3') erzeugten Schalls vorgesehen sind, dadurch gekennzeichnet, dass der Schall und/oder durch den Schall erzeugte Vibrationen durch kontaktlose Sensoren (20) als Mittel zur Schallmessung messbar sind.14. Device (1) for carrying out integrity tests of at least one filter element (3, 3 ') arranged inside a filter housing (2, 2') with porous filter materials, in which means for measuring the sound through a test fluid when flowing through the filter element (3, 3 ') are provided, characterized in that the sound and / or generated by the sound Vibrations can be measured by contactless sensors (20) as a means of sound measurement.
15. Vorrichtung nach Anspruch 14, dadurch gekennzeichnet, dass die Sensoren (20) als optische Vibrationssensoren ausgebildet sind. 15. The apparatus according to claim 14, characterized in that the sensors (20) are designed as optical vibration sensors.
EP09752102A 2008-11-14 2009-10-21 Method and apparatus for carrying out integrity tests Withdrawn EP2365855A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008057458A DE102008057458B4 (en) 2008-11-14 2008-11-14 Method and device for carrying out integrity tests
PCT/EP2009/007529 WO2010054740A1 (en) 2008-11-14 2009-10-21 Method and apparatus for carrying out integrity tests

Publications (1)

Publication Number Publication Date
EP2365855A1 true EP2365855A1 (en) 2011-09-21

Family

ID=41572551

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09752102A Withdrawn EP2365855A1 (en) 2008-11-14 2009-10-21 Method and apparatus for carrying out integrity tests

Country Status (4)

Country Link
US (1) US9072996B2 (en)
EP (1) EP2365855A1 (en)
DE (1) DE102008057458B4 (en)
WO (1) WO2010054740A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2826536A1 (en) * 2013-07-17 2015-01-21 Siemens VAI Metals Technologies GmbH Detection of a cleaning process of a plant with at least one filter
EP3782721B1 (en) * 2014-03-21 2023-08-23 Life Technologies Corporation Gas filter systems for fluid processing systems
US10057699B2 (en) 2014-10-01 2018-08-21 Sartorius Stedim Biotech Gmbh Audio identification device, audio identification method and audio identification system
EP3241013B1 (en) * 2014-12-30 2024-02-07 EMD Millipore Corporation Aseptic filter vent valve and port for integrity testing
MY191758A (en) 2016-01-22 2022-07-14 Baxter Healthcare Sa Sterile solution product bag
PL3405400T3 (en) 2016-01-22 2020-07-27 Baxter International Inc. Method and machine for producing sterile solution product bags
DE102019111114A1 (en) * 2019-04-30 2020-11-05 Hengst Se Method and device for determining the condition of a filter insert in a filter and associated computer program product
EP3865199B1 (en) 2020-02-12 2023-09-13 Carl Freudenberg KG Filter module with sensor for determining the loading condition and method for determining the loading condition

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5161408A (en) * 1991-08-26 1992-11-10 Mcrae Thomas G Photo-acoustic leak detection system and method
US6666070B1 (en) * 2002-06-26 2003-12-23 Corning Incorporated Method for testing the integrity of DPFs

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4701861A (en) * 1985-05-31 1987-10-20 Pall Corporation Filter test device
DE3617724A1 (en) 1986-05-27 1987-12-03 Akzo Gmbh METHOD FOR DETERMINING THE BLOW POINT OR THE BIGGEST PORE OF MEMBRANES OR FILTER MATERIALS
JP3132092B2 (en) * 1990-11-16 2001-02-05 株式会社デンソー Dust filter clogging detection device
DE4119040C2 (en) * 1991-06-10 1997-01-02 Pall Corp Method and device for testing the operating state of filter elements
US5576480A (en) * 1992-11-06 1996-11-19 Pall Corporation System and method for testing the integrity of porous elements
CA2148807A1 (en) 1992-11-06 1994-05-26 Scott D. Hopkins System and method for testing the integrity of porous elements
EP0640822B1 (en) 1993-08-30 1998-04-22 Millipore Investment Holdings Limited Integrity test for porous structures using acoustic emission
JP2001518380A (en) 1997-09-30 2001-10-16 ポール・コーポレーション Apparatus and method for locating a defective filter element among a plurality of filter elements
FR2775440B1 (en) * 1998-03-02 2000-11-10 Suez Lyonnaise Des Eaux METHOD FOR CHECKING THE INTEGRITY OF HOLLOW FIBER FILTRATION MODULES
JP2002537105A (en) * 1999-02-26 2002-11-05 ユナイテッド・ステイツ・フィルター・コーポレイション Method and apparatus for evaluating membranes
FR2828116B1 (en) * 2001-08-06 2003-11-14 Ondeo Degremont METHOD AND DEVICE FOR CHECKING THE INTEGRITY OF MEMBRANARY FILTRATION MODULES
DE10151271B4 (en) * 2001-10-17 2010-01-07 Sartorius Stedim Biotech Gmbh Method for performing integrity tests of filter elements
DE10151269B4 (en) * 2001-10-17 2005-08-25 Sartorius Ag Method for monitoring the integrity of filtration plants
US7245385B2 (en) * 2003-06-24 2007-07-17 Cidra Corporation Characterizing unsteady pressures in pipes using optical measurement devices
JP2006218372A (en) 2005-02-09 2006-08-24 Japan Organo Co Ltd Membrane separation apparatus
US7343827B2 (en) * 2005-11-08 2008-03-18 M-I L.L.C. System and process for break detection in porous elements for screening or filtering

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5161408A (en) * 1991-08-26 1992-11-10 Mcrae Thomas G Photo-acoustic leak detection system and method
US6666070B1 (en) * 2002-06-26 2003-12-23 Corning Incorporated Method for testing the integrity of DPFs

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2010054740A1 *

Also Published As

Publication number Publication date
US20110214485A1 (en) 2011-09-08
DE102008057458A1 (en) 2010-05-20
US9072996B2 (en) 2015-07-07
WO2010054740A1 (en) 2010-05-20
DE102008057458B4 (en) 2012-04-26

Similar Documents

Publication Publication Date Title
WO2010054740A1 (en) Method and apparatus for carrying out integrity tests
DE60011618T2 (en) METHOD AND DEVICE FOR TESTING THE INFECTITY OF FILTRATION MEMBRANES
DE69628824T2 (en) FILTRATION CONTROL AND REGULATION SYSTEM
DE19882069B4 (en) Prediction of logarithmic reduction values
DE10201109C1 (en) Detecting leak in liquid system of blood treatment system involves deriving leakage rate from change in pressure in defined intervals, driving leakage volume from leakage rate
EP1851528B1 (en) Method and device for measuring the surface tension of liquids
DE10116335C1 (en) Procedure for performing an integrity test on filter elements
DE4339589C1 (en) Method and device for testing filter elements using a water intrusion test
DE102013103816A1 (en) Method and device for determining an internal filtration in an extracorporeal blood treatment
EP4200063A1 (en) Monitoring the integrity of an ultrafiltration membrane during filter operation
DE1773196A1 (en) Cavitation indicator
DE102019111114A1 (en) Method and device for determining the condition of a filter insert in a filter and associated computer program product
CN102458621A (en) Simulator device
DE2462281C3 (en)
WO2022037912A1 (en) Microfluidic device
DE102010008524A1 (en) Method for testing integrity of filter elements arranged in filter housing, involves unloading clusters with filter elements by valves to determine pressure drop at input side of elements, and determining integrity of elements based on drop
DE102017008631A1 (en) Arrangement for filtering blood, in particular in the context of extracorporeal liver replacement therapy, and method of operation thereof
EP4019935A1 (en) Integrity test for a double filter capsule
DE102008037118A1 (en) Method for the processing of water by nanofiltration, comprises directly subjecting interior area of polymers or ceramic nanofiltration hollow fibers from raw water in a nanofiltration unit
WO2007012669A1 (en) Optical sensor for in situ measurements
DE102014111732A1 (en) Field device for automation technology
DE19939970B4 (en) Device for filtering oil and separating air from oil in hydraulic systems
EP0928415B1 (en) Membrane osmometer
CH689925A5 (en) Photoacoustic detection of gases and vapors employs cell bounded by permeable membrane- or rigid dampers with bypass reducing time constant of detection and preventing excess pressure
DE19704028A1 (en) System for checking the integrity of filter elements

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20110614

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20170224

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20170502