EP2493623B1 - Verfahren und vorrichtung zur rückgewinnung von auf einem magnetstopfen gefangenen magnetischen partikeln - Google Patents

Verfahren und vorrichtung zur rückgewinnung von auf einem magnetstopfen gefangenen magnetischen partikeln Download PDF

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Publication number
EP2493623B1
EP2493623B1 EP10776619.8A EP10776619A EP2493623B1 EP 2493623 B1 EP2493623 B1 EP 2493623B1 EP 10776619 A EP10776619 A EP 10776619A EP 2493623 B1 EP2493623 B1 EP 2493623B1
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EP
European Patent Office
Prior art keywords
enclosure
magnetic
particles
plug
previous
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Application number
EP10776619.8A
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English (en)
French (fr)
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EP2493623A1 (de
Inventor
Fabrice Colladon
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Safran Aircraft Engines SAS
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Safran Aircraft Engines SAS
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/28—Magnetic plugs and dipsticks
    • B03C1/284—Magnetic plugs and dipsticks with associated cleaning means, e.g. retractable non-magnetic sleeve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/025—High gradient magnetic separators
    • B03C1/031—Component parts; Auxiliary operations
    • B03C1/032—Matrix cleaning systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/28—Magnetic plugs and dipsticks
    • B03C1/286—Magnetic plugs and dipsticks disposed at the inner circumference of a recipient, e.g. magnetic drain bolt

Definitions

  • the invention relates to a device and a method for recovering magnetic particles trapped on a magnetic plug for retaining, by means of a magnet, the magnetic particles entrained by a liquid and resulting from the wear of parts, such as for example rotating parts arranged in an aircraft equipment or engine casing.
  • a magnetic plug is placed in a liquid circuit (typically oil, coolant or fuel) inside a casing containing moving parts, such as gears or bearings. , which bathe in said liquid.
  • a liquid circuit typically oil, coolant or fuel
  • moving parts such as gears or bearings.
  • the function of the liquid circuit is to allow the lubrication and / or cooling of moving parts (typically rotating parts). It turns out that the moving parts are worn during their lifetime, for example because of the friction resulting from contact between two gears or bearings, or because of shocks or intense friction between rotating parts due to intense and abnormal vibrations propagating in the crankcase. Whatever the cause, the wear of the parts leads to the formation of particles that are detached from the parts and are driven by the liquid in the liquid circuit. Since the rotating parts are generally metallic, the particles resulting from wear of the parts are conductive and are generally in the form of filings. What is more, the parts are most often made of a ferromagnetic type metal such as iron, that is to say able to be attracted by a magnetic element such as a magnet.
  • a ferromagnetic type metal such as iron
  • a magnetic plug 1 comprises at one end a head or support 2 and a permanent magnet formed by a magnetic bar 3 immersed in the circuit liquid, said bar 3 attracting the metal particles 4 during the circulation of the liquid.
  • a first technique is to use an adhesive tape that the operator puts in contact with the magnetic bar of the plug.
  • a second technique is to use a cloth to collect the particles on the magnetic bar.
  • a third technique may be to directly collect the particles on the bar with a magnet more powerful than the magnet of the magnetic bar.
  • the document EP1445024 discloses a magnetic deburring device comprising a chamber incorporating an opening adapted to receive a magnet located at the end of a rod.
  • the enclosure is provided with two connecting pipes respectively serving as entry and exit of the liquid entrapped and a drain opening.
  • the present invention aims to provide a device for a fast, reliable and complete recovery of magnetic particles trapped on a magnetic plug.
  • a pressure injection of gas is used (preferably filtered and deoiled compressed air, injected for example at 6 bar) via at least one nozzle.
  • the flow of gas will allow to detach the magnetic particles on the magnetic plug and send these particles to the bottom of the device enclosure.
  • the presence of magnetization means preferentially arranged near the bottom of the enclosure and outside thereof will allow the trapping of these particles (ie the particles can not rise because they are trapped by the means of magnetization).
  • the device according to the invention is therefore a tool for operators to reliably recover all the magnetic particles, the latter being separated from the magnetic plug under the effect of an air jet when the plug is placed in the enclosure of the tooling.
  • Each of the nozzles 104 is inclined at an angle of 45 ° with respect to the vertical axis OO '.
  • the enclosure 101 may be made of a transparent plastic material.
  • FIG. figure 8 represents the sequence of steps 201 to 205 of the method 200. It will be noted that these steps 201 to 205 will preferably be implemented on site by an operator.
  • the magnetic plug 1 After having been recovered by the operator for analysis of the trapped particles 4, is put in place in the device 100. More specifically, the magnetic bar 3 (on which the magnetic particles 4 are retained) is inserted into the enclosure 101 and the support end 2 (or head) of the plug 1 closes the opening 102.
  • the opening 102 of the device 1 must be dimensioned so that its diameter is smaller than the diameter of the head 2 of the plug 1 .
  • the O-ring 103 seals between the support end 2 and the opening 102.
  • the second step 202 illustrated in figure 4 for a few seconds, via the nozzles 104, injected filtered and deoiled compressed air (to prevent pollution of the particles 4) inside the enclosure 101.
  • the inclination at 45 ° to the vertical axis of the nozzles 104 directs the jet of compressed air to the end of the magnetic bar 3 on which are retained the particles 4.
  • the set of particles 4 on the bar 3 are then driven to the bottom of the enclosure 101 and are trapped by the magnet 106 which is powerful enough to hold them at the bottom of the enclosure 101 and prevent them from rising up the enclosure.
  • venting is provided by the vent pipe 107 to avoid overpressure.
  • a magnet 106 having a magnetization typically between 50 and 100 A / m
  • that of the permanent magnet plug generally between 25 and 30 A / m
  • the height of the enclosure 101 is adjusted so that the distance d between the magnet 106 of the end of the magnetic bar 3 is between 2 and 5 cm: this distance d is sufficient for the magnetization of the magnet 106 does not disturb the magnetization of the bar 3 which must remain substantially constant for later use.
  • the magnetic plug 1 is extracted from the device 100 according to the invention and then the magnet 106 is removed from the support 105 (for the memory, the magnet 106 is removably mounted on the support 105), the particles 4 always being at the bottom of the the enclosure 101.
  • Step 204 illustrated in figure 6 will consist in recovering the particles 4 at the bottom of the receptacle 101.
  • a cylinder 112 made of copper sliding in a glass tube 111 and provided at its lower end with a magnet 110 is used. the enclosure 101 the cylinder 112 inserted in the tube 111, the particles 4 are magnetized by the magnet 110.
  • step 205 illustrated in figure 7 the particles 4 are then recovered in a plastic bag 113 by sliding upwards (in the direction of the arrow) the cylinder 112 in the tube 111; raising the cylinder 112 removes the magnetic field exerted by the magnet 110 on the particles 4.
  • the bag 113 can then be transmitted by the operator to a laboratory for particle analysis 4.
  • the particle recovery step at the bottom of the enclosure of the device according to the invention has been described in the context of the use of a sliding cylinder in a tube. It is also perfectly possible to recover the particles by inverting the device according to the invention in order to directly transfer the particles (which are no longer trapped by the magnet 106 previously removed) in a bag.
  • the device has been described more specifically with a removable magnet 106. It is also possible to use a non-removable electromagnet whose magnetization will be controlled according to whether or not it is desired to maintain the trapped particles.
  • the device preferably comprises a plurality of nozzles distributed around the enclosure, it is also conceivable to use only one injection nozzle by rotating the plug inside the device according to the invention. invention so that the jet of compressed air reaches the entire surface of the bar on which the particles are trapped.
  • the device according to the invention which has just been described finds a particularly interesting application in use with magnetic plugs used on all machines for which it is important to be able to detect wear, especially on aircraft turbomachines. On the latter, the use of several plugs magnetic, on different oil circuits, can quickly locate a part with a beginning of wear.

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  • Sampling And Sample Adjustment (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Soft Magnetic Materials (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Claims (10)

  1. Auffangvorrichtung (100) von magnetischen Partikeln (4), die auf einem magnetischen Stopfen (1) gefangen sind, wobei der genannte magnetische Stopfen (1) ein Trägerende (2) und ein magnetisches Element (3) umfasst, das zum Festhalten der magnetischen Partikel (4) bestimmt ist, die durch eine Flüssigkeit mitgerissen werden und aus der Abnutzung von Stücken resultieren, mit denen die genannte Flüssigkeit in Kontakt war, wobei die genannte Auffangvorrichtung (100) umfasst:
    - Magnetisierungsmittel (106);
    - eine Einfassung (101), die beinhaltet:
    ∘ eine Öffnung (102), wobei die genannte Einfassung (101) geeignet ist, den genannten magnetischen Stopfen (1) über die genannte Öffnung (102) derart aufzunehmen, dass das genannte magnetisierte Element (3) im Innern der genannten Einfassung (101) aufgenommen ist und das genannte Trägerende (2) sich an der Außenseite der genannten Einfassung (101) befindet, wobei die genannte Öffnung (102) derart bemessen ist, dass das genannte Trägerende (2) die genannte Öffnung (102) verschließt;
    ∘ wenigstens eine Einspritzdüse (104), die zum Einspritzen eines gashaltigen Fluids ins Innere der genannten Einfassung (101) geeignet ist, wobei die genannte Düse (104) derart ausgerichtet ist, dass der Fluss des gasförmigen Fluids die auf dem genannten magnetisierten Element zurückgehaltenen magnetischen Partikel (4) zum Boden der genannten Einfassung (101) treibt, wobei die genannten Magnetisierungsmittel (106) angeordnet sind, um die zum Boden der genannten Einfassung (101) getriebenen genannten Partikel (4) einzufangen.
  2. Vorrichtung (100) gemäß dem voranstehenden Anspruch, dadurch gekennzeichnet, dass sie eine Vielzahl von Einspritzdüsen (104) umfasst, die auf der genannten Einfassung (101) montiert sind.
  3. Vorrichtung (100) gemäß dem voranstehenden Anspruch, wobei das genannte magnetisierte Element (3) des genannten magnetischen Stopfens (1) ein magnetischer Stab (3) ist, wobei die genannte Vorrichtung (100) dadurch gekennzeichnet ist, dass die genannte Einfassung (100) bemessen ist, um den genannten magnetischen Stab (3) im Innern der genannten Einfassung (101) aufzunehmen und die genannten Düsen (104) lateral auf der genannten Einfassung (101) derart angeordnet sind, dass sie sich auf jeder Seite des genannten Stabes (3) befinden, wenn letzterer im Innern der genannten Einfassung (101) in Position ist.
  4. Vorrichtung (100) gemäß dem voranstehenden Anspruch, dadurch gekennzeichnet, dass jede der genannten Düsen (104) im Verhältnis zur Achse (OO') des Stabes (3) um 45° geneigt ist; wenn letzterer im Innern der genannten Einfassung (101) in Position ist.
  5. Vorrichtung (100) gemäß einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass die genannten Magnetisierungsmittel (106) an der Außenseite der genannten Einfassung (101) in der Nähe des Bodens der genannten Einfassung (101) angeordnet sind.
  6. Vorrichtung (100) gemäß einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass die genannten Magnetisierungsmittel (106) abnehmbar auf der Außenseite des Bodens der genannten Einfassung (101) montiert sind.
  7. Vorrichtung (100) gemäß einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass die genannten Magnetisierungsmittel (106) derart angeordnet sind, dass sie in einer zwischen 2 und 5 cm inbegriffenen Entfernung des genannten magnetisierten Elements (3) angeordnet sind, wenn Letzteres im Innern der genannten Einfassung (101) ist.
  8. Vorrichtung (100) gemäß einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass sie Abdichtmittel (103), wie z. B. einen O-Ring, umfasst, die geeignet sind, die Abdichtung zwischen dem genannten Trägerende (2) und der genannten Öffnung (101) zu gewährleisten, wenn das genannte Trägerende (2) die genannte Öffnung (101) verschließt.
  9. Auffangvorrichtung (100) von magnetischen Partikeln, die auf einem magnetischen Stopfen gefangen sind, mithilfe einer Vorrichtung gemäß einem der voranstehenden Ansprüche, wobei das genannte Verfahren die folgenden Schritte umfasst:
    - Einsetzen (201) des magnetischen Stopfens in die Auffangvorrichtung über die Öffnung der Einfassung derart, das das magnetisierte Element des die magnetischen Partikel zurückhaltenden Stopfens im Innern der Einfassung aufgenommen ist und das Trägerende des Stopfens sich an der Außenseite der Einfassung derart befindet, dass die Öffnung der Einfassung verschlossen ist;
    - Einspritzen (202) von bevorzugt gefilterter Druckluft über die Einspritzdüse oder Einspritzdüsen derart, dass die auf dem magnetischen Element zurückgehaltenen Partikel zum Boden der Einfassung ausgetragen werden;
    - Einfangen (202) der zum Boden der Einfassung durch die genannten Magnetisierungsmittel ausgetragenen Partikel;
    - Wiedergewinnen (203, 204, 205) der von den genannten Magnetisierungsmitteln eingefangenen Partikel.
  10. Verfahren gemäß dem voranstehenden Anspruch, dadurch gekennzeichnet, dass der Wiedergewinnungsschritt (203, 204, 205) der Partikel die folgenden Schritte umfasst:
    - Abnehmen (203) des magnetischen Stopfens und der abnehmbar unter dem Boden der Einfassung montierten Magnetisierungsmittel;
    - Wiedergewinnen (204) der Partikel mithilfe eines gleitend in einer Röhre montierten magnetisierten Stabes
EP10776619.8A 2009-10-30 2010-10-22 Verfahren und vorrichtung zur rückgewinnung von auf einem magnetstopfen gefangenen magnetischen partikeln Active EP2493623B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0957682A FR2951961B1 (fr) 2009-10-30 2009-10-30 Dispositif et procede de recuperation de particules magnetiques piegees sur un bouchon magnetique
PCT/EP2010/066000 WO2011051192A1 (fr) 2009-10-30 2010-10-22 Dispositif et procede de recuperation de particules magnetiques piegees sur un bouchon magnetique

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Publication Number Publication Date
EP2493623A1 EP2493623A1 (de) 2012-09-05
EP2493623B1 true EP2493623B1 (de) 2019-04-03

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EP10776619.8A Active EP2493623B1 (de) 2009-10-30 2010-10-22 Verfahren und vorrichtung zur rückgewinnung von auf einem magnetstopfen gefangenen magnetischen partikeln

Country Status (9)

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US (1) US9248454B2 (de)
EP (1) EP2493623B1 (de)
CN (1) CN102596416B (de)
BR (1) BR112012010100B1 (de)
CA (1) CA2778856C (de)
ES (1) ES2726428T3 (de)
FR (1) FR2951961B1 (de)
RU (1) RU2541685C2 (de)
WO (1) WO2011051192A1 (de)

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FR2957823B1 (fr) * 2010-03-29 2015-02-27 Snecma Dispositif et procede de recuperation de particules magnetiques piegees sur un bouchon magnetique
DE102014019526B4 (de) * 2014-12-23 2016-10-27 Testo Ag Untersuchungsverfahren, scheibenförmiger Probenträger und Verwendung eines Probenträgers
EP3642624A1 (de) * 2017-06-19 2020-04-29 Lab-on-a-Bead AB Kombinatorische trennung
CN112547618B (zh) * 2020-11-11 2021-12-17 东阳(吴江)汽车部件有限公司 一种机械零件清洗装置
RU206328U1 (ru) * 2021-01-29 2021-09-06 Болтенков Евгений Владимирович Магнитогравитационный сепаратор
RU2771346C1 (ru) * 2021-01-29 2022-04-29 Болтенков Евгений Владимирович Магнито-гравитационный сепаратор
US11621109B2 (en) * 2021-05-25 2023-04-04 Victor Manuel Flores Magnetic plugs for electrical containment enclosures
CN114130736B (zh) * 2021-11-09 2022-11-11 武汉惠强新能源材料科技有限公司 一种自动分离磁性物质的装置
TWI781820B (zh) * 2021-11-10 2022-10-21 泰翰實業有限公司 流體物料磁性雜質分離機、總成及其方法
CN115106191A (zh) * 2022-06-30 2022-09-27 扬州纳力新材料科技有限公司 柔性膜材表面金属颗粒的收集设备、收集方法和检测方法

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Also Published As

Publication number Publication date
CA2778856A1 (fr) 2011-05-05
BR112012010100B1 (pt) 2019-11-26
ES2726428T3 (es) 2019-10-04
EP2493623A1 (de) 2012-09-05
RU2012122212A (ru) 2013-12-10
WO2011051192A1 (fr) 2011-05-05
CN102596416B (zh) 2015-02-25
BR112012010100A2 (pt) 2017-06-27
FR2951961A1 (fr) 2011-05-06
US20120204910A1 (en) 2012-08-16
CN102596416A (zh) 2012-07-18
FR2951961B1 (fr) 2011-11-04
RU2541685C2 (ru) 2015-02-20
US9248454B2 (en) 2016-02-02
CA2778856C (fr) 2017-06-13

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