CN112326513A - Method for improving detection precision of oil metal abrasive particles and detection device thereof - Google Patents
Method for improving detection precision of oil metal abrasive particles and detection device thereof Download PDFInfo
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- CN112326513A CN112326513A CN202011256715.5A CN202011256715A CN112326513A CN 112326513 A CN112326513 A CN 112326513A CN 202011256715 A CN202011256715 A CN 202011256715A CN 112326513 A CN112326513 A CN 112326513A
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- 238000001514 detection method Methods 0.000 title claims abstract description 188
- 239000002245 particle Substances 0.000 title claims abstract description 181
- 239000002184 metal Substances 0.000 title claims abstract description 159
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000003756 stirring Methods 0.000 claims abstract description 53
- 239000012530 fluid Substances 0.000 claims description 23
- 238000013019 agitation Methods 0.000 claims description 16
- 239000000523 sample Substances 0.000 claims description 16
- 239000002923 metal particle Substances 0.000 claims description 5
- 239000011859 microparticle Substances 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims 1
- 238000005054 agglomeration Methods 0.000 abstract 1
- 230000002776 aggregation Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 126
- 229910001338 liquidmetal Inorganic materials 0.000 description 6
- 230000007774 longterm Effects 0.000 description 3
- 239000006061 abrasive grain Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 238000011895 specific detection Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000010913 used oil Substances 0.000 description 1
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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- Dispersion Chemistry (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses a method for improving detection precision of oil metal abrasive particles and a detection device thereof, which are used for detecting the oil metal abrasive particles of a hydraulic system, wherein the oil metal abrasive particle detection device (3) is arranged on an oil pipeline (1) and is connected to a detection instrument (2) through a lead (21), and oil to be detected flows through the oil metal abrasive particle detection device (3), and the method is characterized in that the oil metal abrasive particle detection device comprises a first oil metal abrasive particle detection sensor (32) and an ultrasonic stirring and scattering device (31), wherein the ultrasonic stirring and scattering device (31) is arranged at the front end of the first oil metal abrasive particle detection sensor (32) and is used for scattering clustered metal abrasive particles before the first oil metal abrasive particle detection sensor (32) detects the particles in the oil. According to the invention, a power ultrasonic stirring device is added in front of the detection sensor to break up agglomerated small particles possibly existing in oil flowing through the detection sensor, so that the oil is stirred more uniformly and comprehensively, and misjudgment caused by agglomeration of the small particles is avoided.
Description
Technical Field
The invention relates to the technical field of electromagnetic nondestructive detection, in particular to a method for distinguishing and detecting metal abrasive particles in oil, and particularly relates to a method for improving the detection precision of the metal abrasive particles in the oil and a detection device thereof.
Background
The hydraulic system is widely applied, and modern industry, aerospace, ships and the like can be applied to precise hydraulic systems. The in-service maintenance of the hydraulic system is also a very important part for ensuring the safe operation of the hydraulic system. The detection and monitoring of oil are common means for evaluating the conditions of various machines and predicting various faults, the detection of abrasive particles in the oil is an indispensable method in modern industrial maintenance activities, and is a conventional detection method for ensuring long-term effective and stable operation of a hydraulic system, so that the accident rate can be reduced, and the working efficiency is improved. Generally, an optical or electromagnetic detection method is adopted, and the level amount and the number of large and small abrasive particles are required to be respectively obtained so as to analyze and judge the working state of the hydraulic system. However, in a specific detection process, the presence of sludge or the like often causes fine particles to be aggregated into a large particle state, and the detection of a truly large abrasive particle is important. Since small particles are normally mechanically worn and large particles are not, they usually give a warning that there is a danger. Therefore, the detection of the large metal abrasive particles is important. However, in a specific detection process, the micro particles are gathered into large particles due to the existence of oil sludge and the like, so that the detected large abrasive particle data comprises false signals. How to obtain real metal large abrasive particle data and improve the detection accuracy is a difficult problem to be solved in the oil detection of the hydraulic system.
Aiming at the problems of the defects, the invention adopts the following technical scheme to improve.
Disclosure of Invention
The invention aims to provide a method for improving the detection precision of oil metal abrasive particles and a detection device thereof, and the technical scheme is as follows:
the utility model provides a method for improve fluid metal grit detection accuracy for hydraulic system's fluid metal particle detects, its characterized in that the fluid metal grit detection device who uses includes first fluid metal grit detection sensor and sets up in the supersound stirring of first fluid metal grit detection sensor front end and breaks up the device, and concrete step is as follows:
a. starting a detection device: installing an oil metal abrasive particle detection device on a pipeline opening, enabling oil to be detected to flow through the detection device, and starting the oil metal abrasive particle detection device;
b. starting an ultrasonic scattering function: starting the function of an ultrasonic stirring and scattering device in the oil metal abrasive particle detection device, stirring and scattering oil passing through the oil metal abrasive particle detection device, and applying strong ultrasonic vibration to scatter large particles formed by gathering micro particles in the oil;
c. and (3) detecting metal abrasive particles: the first oil metal abrasive particle detection sensor is used for detecting parameters such as size, concentration and components of metal abrasive particles of oil which flows through the first oil metal abrasive particle detection sensor after being stirred and dispersed by the ultrasonic dispersing device;
d. and analyzing, processing and displaying the detection data.
The method for improving the detection precision of the metal abrasive particles in the oil is characterized in that a large particle detection sensor is further arranged at the front end of the ultrasonic stirring and scattering device, the detection of the large particle metal abrasive particles is carried out before the step b, when the metal abrasive particles with the diameter larger than a calibrated threshold value are detected in the oil, the ultrasonic stirring and scattering device is started, and the first oil metal abrasive particle detection sensor detects the oil after stirring and scattering; when no metal abrasive particle larger than the calibrated threshold diameter exists in the detected oil, the ultrasonic stirring and scattering device is not started, and the first oil metal abrasive particle detection sensor detects the oil which is not stirred and scattered.
A method for improving detection precision of metal abrasive particles in oil is characterized in that a second oil metal abrasive particle detection sensor is further arranged at the front end of the ultrasonic stirring scattering device, before step b, the oil flowing through the second oil metal abrasive particle detection sensor is subjected to detection of parameters such as size, concentration and components of the metal abrasive particles, when the size parameter of the detected oil exceeds a calibration threshold value, the ultrasonic stirring scattering device is started, and the first oil metal abrasive particle detection sensor detects the oil which is stirred and scattered; when the size parameter of the detected oil does not exceed the calibration threshold, the ultrasonic stirring and scattering device is not started, and the first oil metal abrasive particle detection sensor detects the oil which is not stirred and scattered.
The method for improving the detection precision of the oil metal abrasive particles is characterized by further comprising a metal abrasive particle detection parameter comparison and analysis step, wherein the metal abrasive particle detection parameter comparison and analysis step is used for analyzing and comparing various parameters respectively detected by a first oil metal abrasive particle detection sensor and a second oil metal abrasive particle detection sensor when the ultrasonic stirring scattering device is started.
The invention also discloses a detection device for improving the detection precision of the oil metal abrasive particles, which is used for detecting the oil metal abrasive particles of a hydraulic system, wherein the oil metal abrasive particle detection device (3) is arranged on the oil pipeline (1) and is connected to the detection instrument (2) through a lead (21), and oil to be detected flows through the oil metal abrasive particle detection device (3), and the detection device is characterized by comprising a first oil metal abrasive particle detection sensor (32) and an ultrasonic stirring and scattering device (31), wherein the ultrasonic stirring and scattering device (31) is arranged at the front end of the first oil metal abrasive particle detection sensor (32) and is used for scattering clustered metal abrasive particles before the first oil metal abrasive particle detection sensor (32) detects the particles in the oil.
The detection device for improving the detection precision of the oil metal abrasive particles is characterized in that the oil metal abrasive particle detection device (3) further comprises a large particle detection sensor (33), and the large particle detection sensor (33) is arranged at the front end of the ultrasonic stirring and scattering device (31).
The detection device for improving the detection precision of the oil metal abrasive particles is characterized in that the oil metal abrasive particle detection device (3) further comprises a second oil metal abrasive particle detection sensor (34), and the second oil metal abrasive particle detection sensor (34) is arranged at the front end of the ultrasonic stirring and scattering device (31).
In addition, the invention also discloses an ultrasonic stirring and scattering device for detecting the oil metal abrasive particles, wherein the ultrasonic stirring and scattering device (31) comprises a plurality of sound guide blocks and ultrasonic probe transducers, and is characterized in that each ultrasonic probe transducer (311) is matched with one sound guide block (312), the sound guide blocks (312) are arranged into wedge-shaped acoustic lenses, and a hollow hub-shaped sound guide support (313) is formed by enclosing a plurality of wedge-shaped sound guide blocks (312) and is used for focusing the ultrasonic waves of the ultrasonic probe transducers (311) arranged on the periphery of the hub-shaped sound guide support (313) on the center of the sound guide support (313).
An ultrasonic stirring and scattering device for detecting oil metal abrasive particles is characterized in that a plurality of ultrasonic probe transducers (311) are arranged in a matched mode with a plurality of sound guide blocks (312) at intervals.
The ultrasonic stirring and scattering device for detecting the oil metal abrasive particles is characterized in that a plurality of sound guide blocks (312) are arranged into a plurality of same wedge-shaped blocks which have the same volume and can just form a circular ring shape.
According to the technical scheme, the invention has the following beneficial effects: firstly, a power ultrasonic stirring device is added in front of a detection sensor to break up the gathered small particle clusters, and then the subsequent sensor classifies and counts the sizes of the particles, so that the aim of improving the detection precision is fulfilled; the ultrasonic stirring device is provided with a plurality of ultrasonic probe transducers, adopts a structure similar to a langevin probe (sandwich), focuses ultrasonic waves around an oil outlet through a sound guide material (organic glass, resin and the like) with a triangular wedge-shaped structure, breaks up possibly existing agglomerated small particles in oil flowing through the ultrasonic stirring device, and realizes more uniform and comprehensive stirring of the oil, so that misjudgment caused by omission of the agglomerated small particles is avoided; the ultrasonic stirring device is provided with a plurality of probes which are arranged on the detection sensor in a centralized way by the bracket and work in cooperation with the detection sensor, so that the function of small-sized integral installation is realized.
Drawings
FIG. 1 is a schematic view of an ultrasonic agitation break-up apparatus in accordance with a preferred embodiment of the present invention;
FIG. 2 is an enlarged schematic view of a single ultrasonic probe transducer in combination with a single focused sound guide block of the ultrasonic agitation break-up apparatus in accordance with the preferred embodiment of the present invention;
FIG. 3 is a schematic illustration of a process flow of the preferred embodiment of the present invention;
FIG. 4 is a schematic flow chart of a method with large particle detection according to the preferred embodiment of the present invention;
FIG. 5 is a schematic flow chart of a method of detecting a sensor with a second metal abrasive particle in accordance with a preferred embodiment of the present invention;
FIG. 6 is a schematic view of the oil metal abrasive particle detection device installed in a pipeline according to the preferred embodiment of the present invention;
FIG. 7 is a schematic view of a device for detecting oil metal abrasive particles with a large particle detecting oil metal abrasive particle detecting sensor according to a preferred embodiment of the present invention installed in a pipeline;
fig. 8 is a schematic view of the liquid metal abrasive grain detection apparatus having the second oil metal abrasive grain detection sensor according to the preferred embodiment of the present invention installed in a pipe.
Detailed Description
The invention is further described with reference to the following drawings and detailed description.
As shown in fig. 3 to 5, a method for improving the detection accuracy of oil metal abrasive particles is used for detecting oil metal particles of a hydraulic system, and is characterized in that the used oil metal abrasive particle detection device comprises a first oil metal abrasive particle detection sensor and an ultrasonic stirring and scattering device arranged at the front end of the first oil metal abrasive particle detection sensor, and the method comprises the following specific steps:
a. starting a detection device: installing an oil metal abrasive particle detection device on a pipeline opening, enabling oil to be detected to flow through the detection device, and starting the oil metal abrasive particle detection device;
b. starting an ultrasonic scattering function: starting the function of an ultrasonic stirring and scattering device in the oil metal abrasive particle detection device, stirring and scattering oil passing through the oil metal abrasive particle detection device, and applying strong ultrasonic vibration to scatter large particles formed by gathering micro particles in the oil;
c. and (3) detecting metal abrasive particles: the first oil metal abrasive particle detection sensor is used for detecting parameters such as size, concentration and components of metal abrasive particles of oil which flows through the first oil metal abrasive particle detection sensor after being stirred and dispersed by the ultrasonic dispersing device;
d. and analyzing, processing and displaying the detection data.
The method for improving the detection precision of the metal abrasive particles in the oil is characterized in that a large particle detection sensor is further arranged at the front end of the ultrasonic stirring and scattering device, the detection of the large particle metal abrasive particles is carried out before the step b, when the metal abrasive particles with the diameter larger than a calibrated threshold value are detected in the oil, the ultrasonic stirring and scattering device is started, and the first oil metal abrasive particle detection sensor detects the oil after stirring and scattering; when no metal abrasive particle larger than the calibrated threshold diameter exists in the detected oil, the ultrasonic stirring and scattering device is not started, and the first oil metal abrasive particle detection sensor detects the oil which is not stirred and scattered. When detecting that there is major diameter metal in the fluid, just start supersound stirring and break up the device, avoid ultrasonic transducer long-term work to cause energy consumption and reduce life, more be applicable to the online safety inspection of fluid in active service.
A method for improving detection precision of metal abrasive particles in oil is characterized in that a second oil metal abrasive particle detection sensor is further arranged at the front end of the ultrasonic stirring scattering device, before step b, the oil flowing through the second oil metal abrasive particle detection sensor is subjected to detection of parameters such as size, concentration and components of the metal abrasive particles, when the size parameter of the detected oil exceeds a calibration threshold value, the ultrasonic stirring scattering device is started, and the first oil metal abrasive particle detection sensor detects the oil which is stirred and scattered; when the size parameter of the detected oil does not exceed the calibration threshold, the ultrasonic stirring and scattering device is not started, and the first oil metal abrasive particle detection sensor detects the oil which is not stirred and scattered.
The method for improving the detection precision of the oil metal abrasive particles is characterized by further comprising a metal abrasive particle detection parameter comparison and analysis step, wherein the metal abrasive particle detection parameter comparison and analysis step is used for analyzing and comparing various parameters respectively detected by a first oil metal abrasive particle detection sensor and a second oil metal abrasive particle detection sensor when the ultrasonic stirring scattering device is started.
The second oil metal abrasive particle detection sensor can not only avoid energy consumption and reduce service life caused by long-term work of the ultrasonic transducer, but also more accurately evaluate other parameters of various oils by comparing various parameters before and after the oils are stirred and scattered.
As shown in fig. 6 to 8, the invention further discloses a detection device for improving the detection accuracy of the oil metal abrasive particles, which is used for detecting the oil metal particles of the hydraulic system, wherein the oil metal abrasive particle detection device 3 is installed on the oil pipeline 1 and is connected to the detection instrument 2 through a lead 21, and oil to be detected flows through the oil metal abrasive particle detection device 3, and the detection device is characterized in that the oil metal abrasive particle detection device comprises a first oil metal abrasive particle detection sensor 32 and an ultrasonic stirring and scattering device 31, wherein the ultrasonic stirring and scattering device 31 is arranged at the front end of the first oil metal abrasive particle detection sensor 32 and is used for scattering the agglomerated metal abrasive particles before the first oil metal abrasive particle detection sensor 32 detects the particles in the oil.
The detection device for improving the detection precision of the oil metal abrasive particles is characterized in that the oil metal abrasive particle detection device 3 further comprises a large particle detection sensor 33, and the large particle detection sensor 33 is arranged at the front end of the ultrasonic stirring and scattering device 31.
The detection device for improving the detection precision of the oil metal abrasive particles is characterized in that the oil metal abrasive particle detection device 3 further comprises a second oil metal abrasive particle detection sensor 34, and the second oil metal abrasive particle detection sensor 34 is arranged at the front end of the ultrasonic stirring and scattering device 31.
When the oil metal abrasive particle detection device only has one liquid metal abrasive particle detection sensor, the detection device is installed as shown in fig. 6 and 7, the direction of the shearing head is the direction of the flowing oil, the ultrasonic agitation scattering device 31 must be installed at the upstream of the first liquid metal abrasive particle detection sensor 32, and when two liquid metal abrasive particle detection sensors are provided, the first liquid metal abrasive particle detection sensor 32 and the second liquid metal abrasive particle detection sensor 34 are set to be selectively interchanged, so that the installation non-directivity of the oil metal abrasive particle detection device is realized.
In addition, as shown in fig. 1 and fig. 2, the present invention further discloses an ultrasonic agitation breaking device for detecting oil metal abrasive particles, wherein the ultrasonic agitation breaking device 31 includes a plurality of sound guide blocks and ultrasonic probe transducers, and is characterized in that each ultrasonic probe transducer 311 is matched with one sound guide block 312, the sound guide blocks 312 are configured as wedge-shaped acoustic lenses, and a plurality of wedge-shaped sound guide blocks 312 enclose a hollow hub-shaped sound guide support 313 for focusing ultrasonic waves of the ultrasonic probe transducers 311 arranged at the periphery of the hub-shaped sound guide support 313 to the center of the sound guide support 313.
An ultrasonic stirring and scattering device for detecting oil metal abrasive particles is characterized in that a plurality of ultrasonic probe transducers 311 are arranged at intervals in a matching mode with a plurality of sound guide blocks 312.
An ultrasonic stirring and scattering device for detecting oil metal abrasive particles is characterized in that a plurality of sound guide blocks 312 are arranged into a plurality of same wedge-shaped blocks which have the same volume and can just form a circular ring shape. The wedge-shaped inner tip of the sound guide block 312 is arranged to be an inner arc shape, and a plurality of inner arc shapes are spliced to form a circular pipeline structure shape suitable for oil to flow through and matched with an actual in-service oil pipeline.
The above is one embodiment of the present invention. Furthermore, it is to be understood that all equivalent or simple changes in the structure, features and principles described in the present patent concepts are included in the scope of the present patent.
Claims (10)
1. The utility model provides a method for improve fluid metal grit detection accuracy for hydraulic system's fluid metal particle detects, its characterized in that the fluid metal grit detection device who uses includes first fluid metal grit detection sensor and sets up in the supersound stirring of first fluid metal grit detection sensor front end and breaks up the device, and concrete step is as follows:
a. starting a detection device: installing an oil metal abrasive particle detection device on a pipeline opening, enabling oil to be detected to flow through the detection device, and starting the oil metal abrasive particle detection device;
b. starting an ultrasonic scattering function: starting the function of an ultrasonic stirring and scattering device in the oil metal abrasive particle detection device, stirring and scattering oil passing through the oil metal abrasive particle detection device, and applying strong ultrasonic vibration to scatter large particles formed by gathering micro particles in the oil;
c. and (3) detecting metal abrasive particles: the first oil metal abrasive particle detection sensor is used for detecting parameters such as size, concentration and components of metal abrasive particles of oil which flows through the first oil metal abrasive particle detection sensor after being stirred and dispersed by the ultrasonic dispersing device;
d. and analyzing, processing and displaying the detection data.
2. The method for improving the detection accuracy of the metal abrasive particles in the oil according to claim 1, wherein a large particle detection sensor is further arranged at the front end of the ultrasonic agitation breaking device, the detection of the large particle metal abrasive particles is performed before the step b, when metal abrasive particles larger than a calibrated threshold diameter are detected in the oil, the ultrasonic agitation breaking device is started, and the first oil metal abrasive particle detection sensor detects the oil after the oil is broken by agitation; when no metal abrasive particle larger than the calibrated threshold diameter exists in the detected oil, the ultrasonic stirring and scattering device is not started, and the first oil metal abrasive particle detection sensor detects the oil which is not stirred and scattered.
3. The method for improving the detection accuracy of the metal abrasive particles in the oil according to claim 1, wherein a second oil metal abrasive particle detection sensor is further arranged at the front end of the ultrasonic agitation breaking device, the oil flowing through the second oil metal abrasive particle detection sensor is subjected to detection on parameters such as size, concentration and components of the metal abrasive particles before the step b, when the size parameter of the detected oil exceeds a calibration threshold value, the ultrasonic agitation breaking device is started, and the first oil metal abrasive particle detection sensor detects the oil after the oil is broken up by agitation; when the size parameter of the detected oil does not exceed the calibration threshold, the ultrasonic stirring and scattering device is not started, and the first oil metal abrasive particle detection sensor detects the oil which is not stirred and scattered.
4. The method for improving the detection accuracy of the oil metal abrasive particles according to claim 3, further comprising a metal abrasive particle detection parameter comparison and analysis step for analyzing and comparing parameters respectively detected by the first oil metal abrasive particle detection sensor and the second oil metal abrasive particle detection sensor when the ultrasonic agitation breaking device is started.
5. The utility model provides an improve detection device of fluid metal grit detection precision for hydraulic system's fluid metal particle detects, fluid metal grit detection device (3) are installed on fluid pipeline (1), connect in detecting instrument (2) through lead wire (21), fluid that needs to detect flows fluid metal grit detection device (3), its characterized in that fluid metal grit detection device includes first fluid metal grit detection sensor (32) and supersound stirring and breaks up device (31), wherein supersound stirring breaks up device (31) and sets up in the front end of first fluid metal grit detection sensor (32), be used for breaking up the cohesive mass metal grit before first fluid metal grit detection sensor (32) detects in the fluid.
6. The detection device for improving the detection accuracy of the oil metal abrasive particles according to claim 5, characterized in that the detection device (3) further comprises a large particle detection sensor (33), and the large particle detection sensor (33) is arranged at the front end of the ultrasonic agitation breaking device (31).
7. The detection device for improving the detection accuracy of the oil metal abrasive particles according to claim 5, characterized in that the oil metal abrasive particle detection device (3) further comprises a second oil metal abrasive particle detection sensor (34), and the second oil metal abrasive particle detection sensor (34) is arranged at the front end of the ultrasonic agitation scattering device (31).
8. The ultrasonic stirring and scattering device (31) comprises a plurality of sound guide blocks and ultrasonic probe transducers, and is characterized in that each ultrasonic probe transducer (311) is matched with one sound guide block (312), the sound guide blocks (312) are arranged into wedge-shaped acoustic lenses, and a hollow hub-shaped sound guide support (313) is formed by surrounding the wedge-shaped sound guide blocks (312) and is used for focusing ultrasonic waves of the ultrasonic probe transducers (311) arranged on the periphery of the hub-shaped sound guide support (313) at the center of the sound guide support (313).
9. An ultrasonic agitation break-up apparatus for the inspection of metallic abrasive particles in oil according to claim 8 wherein said plurality of ultrasonic probe transducers (311) are spaced apart to fit a plurality of sound guide blocks (312).
10. An ultrasonic agitation and dispersion apparatus for the inspection of metal abrasive particles in oil according to claim 8 wherein the plurality of sound guide blocks (312) are arranged as a plurality of identical wedge-shaped blocks of the same volume that just form a circular ring.
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