WO2012124773A1 - Procédé d'inspection de filtres pour détecter des défauts et dispositif d'inspection de filtres pour détecter des défauts - Google Patents

Procédé d'inspection de filtres pour détecter des défauts et dispositif d'inspection de filtres pour détecter des défauts Download PDF

Info

Publication number
WO2012124773A1
WO2012124773A1 PCT/JP2012/056743 JP2012056743W WO2012124773A1 WO 2012124773 A1 WO2012124773 A1 WO 2012124773A1 JP 2012056743 W JP2012056743 W JP 2012056743W WO 2012124773 A1 WO2012124773 A1 WO 2012124773A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid
particles
gas
filter
gas flow
Prior art date
Application number
PCT/JP2012/056743
Other languages
English (en)
Japanese (ja)
Inventor
幸人 徳岡
Original Assignee
住友化学株式会社
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 住友化学株式会社 filed Critical 住友化学株式会社
Publication of WO2012124773A1 publication Critical patent/WO2012124773A1/fr

Links

Images

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
    • B01D46/24—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
    • B01D46/2418—Honeycomb filters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/956—Inspecting patterns on the surface of objects
    • G01N21/95692—Patterns showing hole parts, e.g. honeycomb filtering structures
    • 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

Definitions

  • the present invention relates to a filter defect inspection method and a filter defect inspection apparatus.
  • Patent Document 1 a defect inspection method for a honeycomb filter used as a diesel particulate filter is known.
  • a gas flow containing liquid particles generated from a spray nozzle is provided on the inlet end face of a honeycomb filter, and the gas flow emitted from the outlet end face of the honeycomb filter is irradiated with light to illuminate the particles. Is disclosed.
  • the pores of the filter are clogged with liquid, and it may be difficult to perform inspection with sufficient accuracy.
  • the present invention has been made in view of the above problems, and provides a defect inspection method for a filter and a defect inspection apparatus for a filter that can further improve defect detection accuracy while using liquid particles. Objective.
  • the filter defect inspection method includes: Generating a gas stream containing liquid particles, Removing relatively large particles in the liquid particle group; Supplying a gas stream containing the liquid particle group to one end face of the filter after the removal of the large particles; Detecting a concentration distribution of liquid particles in the gas discharged from the other end face of the filter.
  • the filter defect inspection apparatus includes: A generating section for generating a gas flow including liquid particles, and A removing section for removing particles having a relatively large particle diameter in the liquid particle group; An introduction part for guiding a gas flow including a group of liquid particles from which the large particles have been removed to one end face of the filter; A detection unit that detects a concentration distribution of liquid particles in the gas discharged from the other end surface of the filter.
  • the pores of the filter may be blocked by the liquid particles having a large particle size. It is suppressed. This improves the inspection accuracy of the filter.
  • the removal by allowing a gas flow containing the liquid particle group to pass through a bent tube.
  • Small particles can bend inside the bent pipe by riding on the gas flow, but large particles collide with the wall without being able to bend the bent part due to the large inertia, or gravity is applied after being supplied to the inside Therefore, the large particles can be selectively removed easily with a simple configuration.
  • the angle between the axis of the gas inlet side and the axis of the gas outlet side of the bent pipe is preferably 45 to 135 °, and more preferably 45 to 90 °.
  • a gas flow including the liquid particle group is generated by a two-fluid nozzle (a nozzle that generates a liquid microparticle group by mixing two fluids of gas and liquid inside or outside the nozzle).
  • the removing step it is preferable to remove a group of liquid particles having a particle size of at least 11 ⁇ m, preferably 5 ⁇ m or more.
  • the filter includes a porous partition wall that forms a plurality of channels extending in parallel to each other, one end of a part of the plurality of channels, and the other end of the remaining part of the plurality of channels.
  • a honeycomb filter having a sealing portion to be closed is preferable.
  • filter defects can be detected with high accuracy.
  • FIG. 1A is a perspective view of a honeycomb filter 100 to be inspected
  • FIG. 1B is a view taken along the arrow Ib-Ib in FIG.
  • FIG. 2 is a schematic cross-sectional view of the defect inspection apparatus 400 for the honeycomb filter 100 according to the first embodiment.
  • 3 is a view taken in the direction of arrows III-III in FIG. 4 is a top view around the honeycomb filter 100 of the device 400 of FIG.
  • FIG. 4 is a schematic cross-sectional view of the defect inspection apparatus 400 for the honeycomb filter 100 according to the second embodiment.
  • the honeycomb filter 100 to be inspected in the present embodiment will be described.
  • the honeycomb filter 100 can be used as, for example, a diesel particulate filter.
  • the target honeycomb filter 100 in the present embodiment includes partition walls 112 that form a plurality of flow paths 110 that extend in parallel to each other, and a plurality of flow paths 110.
  • the length of the honeycomb filter 100 in the direction in which the flow path 110 extends is not particularly limited, but may be, for example, 40 to 350 mm. Further, the outer diameter of the honeycomb filter 100 is not particularly limited, but may be, for example, 100 to 320 mm.
  • the size of the cross section of the channel 110 can be set to 0.8 to 2.5 mm on a side in the case of a square, for example.
  • the thickness of the partition 112 can be 0.05 to 0.5 mm.
  • the material of the partition 112 of the honeycomb filter 100 is porous ceramics (fired body).
  • the ceramic is not particularly limited, and examples thereof include alumina, silica, mullite, cordierite, glass, oxides such as aluminum titanate, silicon carbide, silicon nitride, and metal.
  • the aluminum titanate can further contain magnesium and / or silicon.
  • the left end of a part of the plurality of channels 110 of the honeycomb filter 100 is sealed by the sealing part 114, and the right end of the remaining part of the plurality of channels 110 of the honeycomb filter 100 is sealed by the sealing part 114.
  • the material of the sealing portion 114 the same ceramic material as that of the honeycomb filter 100 can be used.
  • the “part of the plurality of flow paths 110” and the “remaining part of the plurality of flow paths 110” described above are preferably arranged in a matrix when viewed from the end face side as shown in FIG. Of the plurality of flow paths arranged in the vertical direction and the horizontal direction in the horizontal direction.
  • the honeycomb filter 100 has porous partition walls 112.
  • the pore diameter of the partition wall is not particularly limited, but can be, for example, about 11 to 30 ⁇ m.
  • the gas supplied from the left end of the flow path 110 passes through the partition wall 112, reaches the adjacent flow path 110, and is discharged from the right end of the flow path 110. At this time, particles in the inflowing gas are removed by the partition walls 112, and the honeycomb filter 100 functions as a filter.
  • Such a honeycomb filter 100 can be manufactured as follows, for example.
  • an inorganic compound source powder, an organic binder, a solvent, and additives to be added as necessary are prepared. These are mixed by a kneader or the like to obtain a raw material mixture.
  • the obtained raw material mixture is extruded from an extruder having an outlet opening corresponding to the shape of the partition wall, cut to a desired length, and then dried by a known method. By doing so, a green honeycomb molded body is obtained. Then, the end of the flow path of the green honeycomb molded body is sealed with a sealing material by a known method and fired, or the green honeycomb molded body is fired and the end of the flow path is sealed by a known method. That's fine.
  • the inspection apparatus 400 includes a two-fluid nozzle (generator) 20 that generates a gas flow including liquid particles P (also referred to as mist), and a relatively large particle diameter in the liquid particles generated by the two-fluid nozzle 20.
  • a bent tube (removal part) 50 that removes the liquid particles PL, and a gas mainly containing liquid particles PS having a relatively small particle diameter that exits from the bent tube 50 is one end of the plurality of channels 110 of the honeycomb filter 100 (the lower ends in FIG. 2).
  • the liquid particles mean liquid fine particles dispersed in a gas, and the two fluid nozzles 20 mix, collide, or scatter two fluids of gas and liquid inside or outside the nozzle. To be generated.
  • the two-fluid nozzle 20 receives the liquid supplied from the tank 10 through the line L1, and receives a gas, for example, air, supplied from the gas source 14 through the valve V1 and the line L2, and receives liquid particles (mist). ) Producing a gas stream containing P;
  • the form of the two-fluid nozzle is not particularly limited.
  • the diameter of the liquid particles (mist) P is not particularly limited, but usually has a wide distribution. For example, the distribution can be about 0.1 to 100 ⁇ m.
  • the gas of the gas source 14 is not particularly limited, but air is preferable in terms of economy. Further, the gas temperature of the gas source 14 is preferably 0 to 50 ° C., more preferably 0 to 30 ° C.
  • the bent pipe 50 mainly has a gas inlet side part 50a whose axis extends in the horizontal direction and a gas outlet side part 50b which is connected to the gas inlet side part 50a and whose axis extends vertically upward.
  • the angle ⁇ formed by the shaft 50aa of the gas inlet side portion 50a and the shaft 50ba of the gas outlet side portion 50b is not particularly limited as long as it is other than 180 °, but is preferably 45 to 135 °, more preferably 45 to 90 °. In the present embodiment, the angle ⁇ is 90 °.
  • the inlet end of the gas inlet side 50a is closed by a closed plate 51, and a plurality of two-fluid nozzles 20 are provided on the closed plate 51.
  • a plurality of two-fluid nozzles 20 can be provided in the horizontal direction and a plurality in the vertical direction and arranged in a matrix.
  • the closed plate 51 may have only one two-fluid nozzle 20 according to the required concentration of liquid particles.
  • the diameters of the gas inlet side portion 50a and the gas outlet side portion 50b are not particularly limited, but may be, for example, 50 to 200% with respect to the diameter of the end face of the honeycomb filter 100.
  • the lengths of the gas inlet side portions 50a and 50b are not particularly limited, but can be set to 10 to 2000 mm, respectively.
  • the shape of the connecting portion between the gas outlet side portion 50b and the gas inlet side portion 50a is formed so that the axial direction changes to an acute angle without rounding, but the rounded direction May be formed such that the angle ⁇ changes.
  • the bent pipe 50 further has a drain pipe 50d extending downward in the vertical direction at the connecting portion between the gas inlet side portion 50a and the gas outlet side portion 50b. That is, the bent tube 50 includes a gas inlet side portion 50a extending upward in the vertical direction, a drain pipe 50d extending downward in the vertical direction and closed at the bottom, and a gas inlet side connected laterally to these connecting portions. It has a portion 50a and is generally T-shaped.
  • a drain line L3 having a valve V3 is connected to the drain pipe 50d, and the liquid collected in the drain pipe 50d can be discharged.
  • the diameter of the drain pipe 50d is not particularly limited, and may be different from the diameter of the gas outlet side part 50b.
  • the connecting portion between the gas inlet side portion 50a and the gas outlet side portion 50b may be rounded like a J shape instead of an L shape. .
  • the introduction part 52 includes a mounting ring 52a, a cylindrical part 52b, and a seal ring 52c.
  • the mounting ring 52a has an opening 52ai and is provided on the outlet end surface of the gas outlet side portion 50b.
  • the cylindrical portion 52b is provided so as to rise from the outside of the mounting ring 52a, and surrounds the outer peripheral surface of the honeycomb filter 100.
  • the seal ring 52c is disposed between the inner surface of the cylindrical portion 52b and the outer peripheral surface of the honeycomb filter 100, and seals the gas containing the liquid particles P so as not to leak from the gap.
  • Scales 260A and 260B are provided at the entry positions.
  • the laser sheet LS is irradiated in parallel to an XY plane that is perpendicular to the Z direction in which the plurality of flow paths 110 of the honeycomb filter 100 extend, and the camera 220 is a laser sheet. A portion of the laser sheet LS facing the upper end surface 110t of the honeycomb filter 100 is photographed from a direction perpendicular to the LS (Z direction).
  • FIG. 4 shows a field of view FV of an image taken by the camera 220.
  • Scales 260A and 260B are disposed in the field of view FV.
  • the scales 260A and 260B extend in the Y direction and the X direction, respectively, and have marks 261 at positions corresponding to the central axes of the plurality of flow paths 110 of the honeycomb filter 100, respectively.
  • the computer 230 performs image analysis on the image taken by the camera 220 and detects a portion where particles are discharged. For example, a portion brighter than a predetermined threshold value may be extracted from the image, and this portion may be set as a place where particles are discharged. The computer acquires and outputs the coordinates of this part as necessary.
  • the partition wall 112 of the honeycomb filter 100 has, as a defect, a hole h that communicates the flow path 110x with the upper end sealed and the flow path 110y with the lower end sealed. It shall be.
  • the channel 110x is at the position of the leftmost mark 261 on the scale 260B and at the position of the third mark 261 from the bottom on the scale 260A.
  • the flow path 110y is at the position of the second mark 261 from the left on the scale 260B, and is at the position of the third mark 261 from the bottom on the scale 260A.
  • the introduction part 52 is attached to the lower part of the honeycomb filter 100.
  • the valve V1 is opened to supply the gas to the two-fluid nozzle 20 and the liquid is sucked up from the tank 10 via the line L1 to generate a gas flow including the liquid particle group (mist) P from the two-fluid nozzle 20.
  • the generated gas flow including the liquid particle group P flows as indicated by an arrow A and is supplied to the honeycomb filter 100 via the bent pipe 50.
  • the concentration of the liquid particles is preferably 0.0001 to 0.1 g / NL.
  • the flow rate of the gas supplied to the honeycomb filter 100 is not particularly limited, but may be, for example, 50 to 500 NL / min.
  • the liquid particle group P included in the gas flow generated from the two-fluid nozzle 20 has a particle size distribution. Therefore, the liquid particle group P has relatively large liquid particles PL and relatively small liquid particles PS. Then, when this gas passes through the bent tube 50, the particles PL having a relatively large particle diameter are removed. Specifically, the inertia and gravity of the liquid particle P are proportional to the volume, that is, the cube of the particle diameter, while the force applied to the liquid particle by the gas flow is proportional to the area, that is, the second particle diameter.
  • the liquid particle PS having a small particle size is relatively influenced by the gas flow and the moving direction is easily changed as indicated by an arrow A
  • the liquid particle PL having a large particle size is relatively influenced by the gas flow.
  • the movement direction is difficult to change. Accordingly, when the liquid particle group P having a particle size distribution is passed through the bent tube 50 together with the gas, the particles PS having a relatively small particle size follow the direction of the flow following the bending of the gas flow as indicated by the arrow A.
  • the particle PL can be changed, the relatively large particle PL cannot follow the gas flow as indicated by the arrow A, and collides with the tube wall, for example, the wall 50b0 of the gas outlet side portion 50b or falls to the drain tube 50d. To do.
  • the large particles can be selectively removed, and the small particles can be selectively supplied to the honeycomb filter 100 via the introduction part 52.
  • the liquid particles colliding with the wall 50b0 form a liquid film and flow down along the wall and are stored in the drain pipe 50d.
  • the stored liquid may be appropriately discharged to the outside through the valve V3 and the line L3.
  • the diameter of the large particles to be removed can be appropriately adjusted according to the angle ⁇ , the linear velocity of the gas flowing through the bent tube 50, the concentration of the liquid particles, and the like. These factors are preferably set so that at least liquid particles having a particle diameter of 11 ⁇ m or more, preferably 5 ⁇ m or more can be removed.
  • the liquid particles PS having a relatively small particle size are supplied into the plurality of flow paths 110 of the honeycomb filter 100 together with the gas. Thereafter, the gas containing the liquid particles PS passes through the porous partition wall 112, and the gas containing the liquid particles PS flows out from the upper ends 110 t of the plurality of flow paths 110 of the honeycomb filter 100. At this time, in the vicinity of the upper ends 110t of the plurality of flow paths 110 of the honeycomb filter 100, it is preferable that the atmosphere gas hardly flow, for example, the flow rate is 1 m / s or less.
  • the temperature of the atmospheric gas is preferably 0 to 30 ° C. for ease of experiment.
  • the atmospheric gas is preferably air.
  • the mixed gas containing the liquid particles (mist) PS is concentrated from the upper end of the defective flow path 110y at a higher flow rate and flow velocity than the other flow paths 110. leak.
  • the sealing portion 114 is missing or when there is a defect such as a gap between the sealing portion 114 and the flow path 110, the mixed gas containing liquid particles flows out in a concentrated manner. Therefore, the concentration of the liquid particles PS is relatively higher above the flow path 110y as compared to other portions.
  • the laser 220 When the gas flowing out from the upper end of the honeycomb filter 100 has a non-uniform concentration of the liquid particles PS, the laser 220 is strongly scattered when the high concentration portion passes through the laser sheet LS, and the camera 220 takes an image. It appears as a relatively bright part in the image. The unevenness of the concentration of particles can be detected by the light intensity profile of the bright part.
  • the present invention by detecting the concentration distribution of particles in the gas flowing out from the flow path 110, the presence or absence and location of the flow path can be easily detected.
  • the liquid is coarser than when the gas is directly supplied to the honeycomb filter 100 without using the bent tube 50. Particles can be extremely reduced, and liquid particles can be miniaturized. For this reason, problems as described below are reduced, and the presence or absence of a channel defect can be detected with high accuracy. That is, when coarse liquid particles are present, the liquid derived from the liquid particles may block the pores of the porous partition walls, thereby causing clogging. Once the eyes are closed, it is difficult to remove clogging unless drying is performed.
  • gas outlet side portion 50b is vertically upward, gravity acts greatly on relatively large particles, and large particles can be removed more efficiently.
  • the inspection apparatus 400 according to the present invention is different from the first embodiment in that a cyclone (removal unit) 60 is provided instead of the bent tube 50. Specifically, a closed plate 51 having a two-fluid nozzle 20 is provided at the end of the horizontal inlet pipe 60 a of the cyclone 60. Also, an introduction part 52 is provided at the upper end of the upper outlet pipe 60b of the cyclone 60, the lower end of the lower outlet pipe 60c of the cyclone 60 is closed to form a liquid reservoir 60c, and the line L3 and the valve V3 are connected. Yes.
  • the present invention is not limited to the above-described embodiment, and various modifications can be made.
  • the two-fluid nozzle is adopted as the method for generating the liquid particle group, but the present invention is not limited to this.
  • another spray nozzle such as a one-fluid nozzle may be used.
  • a liquid particle group may be generated using a four-fluid nozzle or a nebulizer.
  • the 4-fluid nozzle is a nozzle having two liquid flow paths and two gas flow paths, and causes the fluids coming out of the two liquid flow paths and the two gas flow paths to collide at the collision focus at the tip of the nozzle edge.
  • the atomized liquid particle group is generated.
  • a large amount of liquid particles of several microns can be sprayed.
  • edge nozzle 4 fluid nozzle
  • a straight edge nozzle and a circle edge nozzle are mentioned.
  • the type of the nebulizer is not particularly limited, and examples thereof include a jet type that generates liquid particle groups with compressed air, an ultrasonic type that generates liquid particle groups with ultrasonic waves, and a mesh type. Moreover, you may produce
  • a generator that generates a gas flow including a liquid particle group can be configured by appropriately adding a gas from a gas source.
  • a single fluid nozzle can also be used to supplement the gas. That is, a single fluid nozzle for generating a liquid particle group and a single fluid nozzle for supplying a gas can be used in combination.
  • the introduction pressure to the honeycomb body of the liquid particle group generated by one fluid nozzle is insufficient due to the pressure loss due to the honeycomb body, the liquid particle group is generated by the gas flow supplied from the other fluid nozzle.
  • the indentation pressure into the honeycomb body can be increased, and the liquid particles can be smoothly introduced into the honeycomb body.
  • the bent tube 50 and the cyclone 60 are used as a removing unit that removes liquid particles having a large particle diameter, but the present invention is not limited to this.
  • the present invention is not limited to this.
  • a wind classification method that can be classified by balancing the drag force acting on liquid particles by gas and the volume force acting on liquid particles by gravity, inertial force, centrifugal force, etc., gravity classifier, inertia classifier, centrifugal classifier Machine or a combination of these.
  • removing portions in a plurality of stages in series, such as connecting the bent tube 50 in two stages in series or connecting the cyclone 60 in two stages in series.
  • increasing the gas flow rate and increasing the flow rate in the later stage can easily remove particles having a particle size that could not be removed in the previous stage, and further increase the particle size. Miniaturization becomes easy.
  • the gas outlet side portion 50b of the bent tube 50 is arranged vertically upward, but can be implemented even if it is arranged in another direction.
  • the drain pipe 50d is provided in the bent pipe 50.
  • the present invention can also be implemented in an aspect without a drain pipe.
  • the direction of the laser sheet and the direction of the camera are not limited to the above embodiments. For example, you may image
  • the scattered light generated by applying light to the particle is detected as a method for detecting the concentration distribution of the particle.
  • the present invention is not limited to this.
  • reflection generated by applying ultrasonic waves to the particle. A wave or the like may be detected.
  • the atmospheric gas is air, but it goes without saying that other gases may be used as the atmospheric gas.
  • the flow path 110 of the honeycomb filter 100 is arranged in the vertical direction, but the present invention can be implemented in any direction such as a horizontal direction.
  • the cross-sectional shape of the flow path 110 is substantially square, but is not limited thereto, and may be rectangular, circular, elliptical, triangular, hexagonal, octagonal, or the like. Moreover, in the flow path 110, what has a different diameter and a different cross-sectional shape may be mixed. In addition, the arrangement of the flow paths is a square arrangement in FIG. 1, but is not limited to this. it can. Further, the outer shape of the honeycomb filter is not limited to a cylinder, and may be, for example, a triangular column, a quadrangular column, a hexagonal column, an octagonal column, or the like.
  • the honeycomb filter is an inspection target, but a normal plate filter or the like can also be an inspection target.
  • the presence / absence of particles is determined by the computer based on the image obtained by the camera 220.
  • the presence / absence and position of a bright spot may be determined manually.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Geometry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Filtering Materials (AREA)

Abstract

La présente invention concerne un procédé d'inspection de filtres pour détecter des défauts et un dispositif d'inspection de filtres pour détecter des défauts qui permettent d'améliorer plus avant la précision de détection des défauts lors de l'utilisation de particules liquides. Le procédé d'inspection de filtres pour détecter des défauts de l'invention comprend les étapes consistant à : générer un courant de gaz contenant un groupe de particules liquides ; éliminer les particules du groupe de particules liquides qui ont une taille particulaire relativement grande ; amener, à une surface située à l'extrémité d'un filtre, le courant de gaz contenant le groupe de particules liquides dont les grandes particules ont été éliminées ; et détecter la distribution de la concentration des particules liquides dans le gaz évacué par la surface située à l'autre extrémité du filtre.
PCT/JP2012/056743 2011-03-15 2012-03-15 Procédé d'inspection de filtres pour détecter des défauts et dispositif d'inspection de filtres pour détecter des défauts WO2012124773A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011056652 2011-03-15
JP2011-056652 2011-03-15

Publications (1)

Publication Number Publication Date
WO2012124773A1 true WO2012124773A1 (fr) 2012-09-20

Family

ID=46830838

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/056743 WO2012124773A1 (fr) 2011-03-15 2012-03-15 Procédé d'inspection de filtres pour détecter des défauts et dispositif d'inspection de filtres pour détecter des défauts

Country Status (2)

Country Link
JP (1) JP6027323B2 (fr)
WO (1) WO2012124773A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020018346A1 (fr) * 2018-07-20 2020-01-23 Corning Incorporated Système et procédé de détection de défauts dans un corps en nid d'abeilles
WO2020185365A1 (fr) * 2019-03-14 2020-09-17 Corning Incorporated Inspection de gaz thermique d'un corps en nid d'abeilles bouché

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9523623B2 (en) * 2012-11-28 2016-12-20 Corning Incorporated Methods for testing a honeycomb filter
KR101949715B1 (ko) * 2017-06-01 2019-02-19 한국원자력연구원 이온교환기의 스크린 품질 검사장치

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03119415U (fr) * 1990-03-14 1991-12-10
JP2002102752A (ja) * 1998-05-25 2002-04-09 Fuji Koeki Kk 液体塗布装置及び切削加工方法
JP2008241531A (ja) * 2007-03-28 2008-10-09 Denso Corp 多孔質体の検査方法及び検査装置
JP2009503508A (ja) * 2005-07-29 2009-01-29 コーニング インコーポレイテッド 粒子状流体を用いてハニカム体の欠陥を検出する方法、システム及び装置
WO2009028709A1 (fr) * 2007-08-30 2009-03-05 Ngk Insulators, Ltd. Procédé d'inspection de défaut de matériau à inspecter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03119415U (fr) * 1990-03-14 1991-12-10
JP2002102752A (ja) * 1998-05-25 2002-04-09 Fuji Koeki Kk 液体塗布装置及び切削加工方法
JP2009503508A (ja) * 2005-07-29 2009-01-29 コーニング インコーポレイテッド 粒子状流体を用いてハニカム体の欠陥を検出する方法、システム及び装置
JP2008241531A (ja) * 2007-03-28 2008-10-09 Denso Corp 多孔質体の検査方法及び検査装置
WO2009028709A1 (fr) * 2007-08-30 2009-03-05 Ngk Insulators, Ltd. Procédé d'inspection de défaut de matériau à inspecter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020018346A1 (fr) * 2018-07-20 2020-01-23 Corning Incorporated Système et procédé de détection de défauts dans un corps en nid d'abeilles
US11698017B2 (en) 2018-07-20 2023-07-11 Corning Incorporated System and method for detecting defects in a honeycomb body
WO2020185365A1 (fr) * 2019-03-14 2020-09-17 Corning Incorporated Inspection de gaz thermique d'un corps en nid d'abeilles bouché
CN113614502A (zh) * 2019-03-14 2021-11-05 康宁股份有限公司 堵塞蜂窝体的热气体检查

Also Published As

Publication number Publication date
JP2012208119A (ja) 2012-10-25
JP6027323B2 (ja) 2016-11-16

Similar Documents

Publication Publication Date Title
JP4926173B2 (ja) 粒子状流体を用いてハニカム体の欠陥を検出するシステムおよび装置
JP6027323B2 (ja) フィルタの欠陥の検査方法、及び、フィルタの欠陥の検査装置
US20080173071A1 (en) Honeycomb filter defect detecting method
RU2010110762A (ru) Способ и устройство для внесения вспомогательного материала
EP3472588B1 (fr) Système de capteur pour détecter la concentration de masse de particules dans l'air
WO2013008848A1 (fr) Procédé et dispositif d'inspection de défauts dans un filtre en nid d'abeilles et procédé de fabrication de filtre en nid d'abeilles
JP6669684B2 (ja) 壁面噴流を持つドラフトチャンバ
WO2012124772A1 (fr) Dispositif de production de brume pour l'inspection de filtres
CN208943660U (zh) 一种气动旋流除尘除雾实验塔
KR101462948B1 (ko) 임팩터 성능 평가 시스템
JP5939750B2 (ja) ハニカムフィルタの欠陥の検査方法、及び、ハニカムフィルタの製造方法
CA2881435C (fr) Systemes et procedes d'elimination de matiere particulaire contenue dans un flux de gaz
WO2017061383A1 (fr) Procédé d'inspection de filtre en nid d'abeilles, appareil permettant d'inspecter un filtre en nid d'abeilles, et procédé de fabrication de filtre en nid d'abeilles
Dziubak Potential design improvements of a reverse flow mini-cyclone with a tangential inlet
Liao et al. A new design of wet scrubber for removal of fine particles from exhaust gas
Zhang et al. An aerodynamic deduster to reduce dust and gas emissions from ventilated livestock facilities
Kurtyigit A Novel Method of Aerosol Particle Filtration Using Liquid Bridges
ITMI20110319A1 (it) Dispositivo e metodo a letto fluido per l'abbattimento di polveri fini in scarichi gassosi"
JP2013226495A (ja) 集塵装置
Venckus et al. Experimental research into aerodynamic parameters of a cylindrical one-level 8-channel cyclone
Reinke Check for Additive Manufacturing in Gas Cleaning Applications Felix Reinke (), Christian Straube (), Jörg Meyer, and Achim Dittler
RAVILEVNA NUMERICAL STUDY OF DRIP ENTRAINMENT IN BUBBLING APPARATUSES
Klett et al. Numerical and experimental analysis of the 3D flow-pattern in exhaust gas sensors
Altimira et al. On the disintegration of fan-shaped liquid sheets
Chlebnikovas et al. Researches of aggressive gas flow cleaning from wood ash particulate matter in the multi-channel cyclone

Legal Events

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

Ref document number: 12756998

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12756998

Country of ref document: EP

Kind code of ref document: A1