Working method of a full-flow oil dynamic wear particle online monitoring device

Abstract

The present invention discloses a full-flow oil dynamic wear particle online monitoring device, comprising a frame, a lens adjustment mechanism for adjusting the position and accuracy of a visible light high-speed camera is provided on the frame, an oil observation mechanism is provided at the corresponding shooting position of the visible light high-speed camera, and an observation adjustment mechanism for fixing, supporting and adjusting the oil observation mechanism is connected below the oil observation mechanism. The present invention improves the oil observation mechanism, collects dynamic wear particle images at high flow rates in real time through a visible light high-speed camera, and realizes full-flow real-time and high-precision online monitoring of the lubrication system of large and complex mechanical equipment by adjusting the monitoring direction and accuracy of the high-speed camera, thereby solving the problem of "abrasive particle chaining" in offline monitoring and poor real-time performance of bypass online monitoring.

Description

Technical Field

[0001] The invention relates to the field of oil monitoring and fault diagnosis of lubrication systems, and in particular to a working method of a full-flow oil dynamic wear particle online monitoring device. Background Art

[0002] The lubrication system is an important component of large and complex rotating mechanical systems such as aircraft engines and gas turbines. The wear particles generated during the operation of the mechanical system will remain in the oil of the lubrication system. In industry, the oil wear particles in the mechanical lubrication system are often monitored to determine the operating status of the mechanical system and to issue an early warning before the mechanical system fails.

[0003] At present, the most commonly used methods for oil wear particle monitoring in China are offline measurement methods such as spectroscopy and iron spectrum technology. Such methods have the disadvantages of complex equipment, high cost, and inability to monitor the system operation status in real time, resulting in delayed fault warning. Domestic monitoring methods based on optical images usually use micro-channel monitoring methods, but this method can only be applied to offline monitoring or branch sampling monitoring of small flows. Therefore, such methods have the problem of "wear particle chaining" and poor real-time effect of bypass online monitoring. If applied to online full-flow monitoring, it will result in low monitoring sensitivity and delayed fault detection. For the full-flow online monitoring method, some technicians use Raspberry Pi (microcomputer) to perform full-flow online monitoring, but due to the low frame rate of Raspberry Pi, when the oil flow rate is fast under full-flow state in industrial applications, the Raspberry Pi optical monitoring system cannot meet the collection requirements.

[0004] With the rapid development of image recognition technology, visible light high-speed cameras are increasingly used. Considering the use of visible light high-speed cameras in the oil online monitoring system to collect dynamic wear particle images at high flow rates in the oil lubrication system of large and complex mechanical equipment in real time, and then to perform full-flow real-time online monitoring of the lubrication system of large and complex mechanical equipment and perform fault warnings. It is very important to propose a relatively complete full-flow oil dynamic wear particle online monitoring system based on visible light high-speed cameras that is suitable for actual industrial environments.

[0005] The Chinese patent with publication number CN 108680579 A disclosed an "online monitoring device and method for crane hydraulic oil contamination based on machine vision" on October 19, 2018. By shooting the filter position with an image acquisition unit, the degree of contamination of the hydraulic oil can be quickly and accurately measured when the crane hydraulic cylinder stops working. The invention uses a camera to collect images, but it is aimed at the filter position, and the problem solved is also limited to the static collection of hydraulic oil, with delayed detection and poor real-time performance.

[0006] The Chinese patent document with the announcement number CN 103541951 B disclosed the "Hydraulic Oil Contamination Monitoring System" on September 16, 2015. It monitors the oil contamination situation in real time through the analysis and processing device. The analysis and processing device is disclosed to be a sensor. Compared with the visible light high-speed camera monitoring method, it is not intuitive enough, and the monitoring angle and direction cannot be adjusted arbitrarily, and the monitored data is single. Summary of the invention

[0007] In order to address the deficiencies in the prior art, the present invention provides a full-flow oil dynamic wear particle online monitoring device and a working method thereof, aiming to acquire the dynamic wear particle image at high flow rate of the oil lubrication system in real time through a high-speed camera, and to achieve full-flow real-time and high-precision online monitoring of the lubrication system of large and complex mechanical equipment by adjusting the monitoring direction and accuracy of the high-speed camera and improving the oil observation mechanism.

[0008] A full-flow oil dynamic wear particle online monitoring device includes a frame, on which a lens adjustment mechanism 202 for adjusting the position and accuracy of a visible light high-speed camera is provided, an oil observation mechanism 203 is provided at the corresponding shooting position of the visible light high-speed camera, and an observation adjustment mechanism 204 for fixing, supporting and adjusting the oil observation mechanism 203 is connected below the oil observation mechanism 203.

[0009] Preferably, the lens adjustment mechanism 202 includes a lens 202a connected to a visible light high-speed camera, the lens 202a extends into a lens sleeve 202b, the lens sleeve 202b is fixedly connected to a slide plate 202c via an adjustment sleeve 202d, and the slide plate 202c is slidably connected to the frame.

[0010] Preferably, the lens sleeve 202b is formed by a sleeve inner tube 202bb and a sleeve outer tube 202bc being threadedly connected.

[0011] Preferably, the oil observation mechanism 203 includes an optical observation window 203a and an oil pipe 203c. The oil pipe 203c passes through a vibration-damping ring 203b and is connected to the left and right sides of the optical observation window 203a. A light source 205 providing a transmitted light source is provided below the optical observation window 203a.

[0012] Preferably, the optical observation window 203a includes a hollow annular quartz glass observation tube 203ab and a rectangular quartz glass observation window 203aa sleeved on the outside thereof.

[0013] Preferably, the observation and adjustment mechanism 204 includes a support block 204b fixed under the annular quartz glass observation tube 203ab for positioning and supporting, and a guide piece 204f connected to both ends of the oil pipe 203c. A U-shaped groove 201ba is opened on the left panel 201e and the right panel 201b of the cover of the frame, and the guide piece 204f is slidably connected in the U-shaped groove 201ba.

[0014] Preferably, the observation adjustment mechanism 204 further includes a guide column 204c and an adjustment screw 204d for adjusting the height, one end of the guide column 204c and the adjustment screw 204d are connected to the support block 204b, and the other end is connected to the lower panel 201f of the rack cover.

[0015] The present invention also discloses a working method of a full-flow oil dynamic wear particle online monitoring device:

[0016] Step 1, access system: the oil pipeline unit 1, the mechanical working equipment 4 and the multi-degree-of-freedom adjustment unit 2 are connected in a closed loop in sequence through the oil pipeline 102, and the multi-degree-of-freedom adjustment unit 2 is also electrically connected to the visible light high-speed camera image acquisition unit 3.

[0017] Step 2: The oil in the tested mechanical working equipment 4 flows into the annular quartz glass observation tube 203ab through the oil pipeline 102, and the same oil is injected into the rectangular quartz glass observation window 203aa.

[0018] Step three, adjust the visible light high-speed camera image acquisition unit 3 to make the lens 202a of the visible light high-speed camera 301 accurately focused; adjust the multi-degree-of-freedom adjustment unit 2 to adjust the collected oil image.

[0019] Step 4: The visible light high-speed camera image acquisition unit 3 continuously acquires full-flow real-time images of the oil image in the optical observation window 203a.

[0020] Step 5: While collecting the full flow real-time image in step 4, the data processing PC workstation 303 is used to identify the particles and bubbles in the oil and the types of abrasive particles.

[0021] Preferably, the adjustment method of the visible light high-speed camera image acquisition unit 3 is: rotating to adjust the up and down distance of the lens sleeve 202b and / or sliding to adjust the front and back distance of the slide plate 202c, so as to accurately adjust the distance of the visible light high-speed camera 301 on the X-axis and / or Z-axis, so that the lens 202a of the visible light high-speed camera 301 can be accurately focused.

[0022] Preferably, the adjustment method of the multi-degree-of-freedom adjustment unit 2 is: the axis of the oil observation mechanism 203 is parallel to the Y axis, and the axis of the lens 202a is parallel to the Z axis or the X axis. When the axis of the lens 202a is parallel to the Z axis, the collected oil image is a top view image of the oil pipe, which is an overall distribution diagram of the abrasive particles in the oil pipe. When the axis of the lens 202a is parallel to the X axis, the collected oil image is a front view image of the oil pipe, which is a layered distribution diagram of abrasive particles of different sizes.

[0023] Beneficial effects:

[0024] (1) The present invention can realize real-time online monitoring under the full flow circulation state of the oil, solving the problem of "abrasive chain formation" in offline monitoring and the problem of poor real-time effect of bypass online monitoring;

[0025] (2) The present invention can be installed on any large and complex mechanical working equipment with an oil lubrication system, and has high flexibility and good practicality;

[0026] (3) The present invention uses a visible light high-speed camera to acquire dynamic images and uses a visible light high-speed image acquisition unit to store and process them, so the wear particle imaging quality is good and the measurement accuracy is high;

[0027] (4) The lens adjustment mechanism of the present invention can accurately adjust the position of the visible light high-speed camera in the Z-axis and X-axis directions, and the observation adjustment mechanism can adjust the position of the oil pipe in the Z-axis direction, and finally capture the dynamic images of different abrasive particles in different flow layers of the full-flow oil pipeline. The structure is simple but the adjustment accuracy is high and the economy is good.

[0028] (5) The optical observation window of the present invention adopts a rectangular quartz glass observation window sleeved on a circular quartz glass observation tube, which can reduce the scattering of the circular glass tube and improve the shooting clarity of the visible light high-speed camera;

[0029] (6) The present invention arranges a light source directly below the rectangular quartz glass observation window to provide a transmitted light source for the optical observation window, thereby improving the shooting accuracy of the visible light speed camera. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic structural diagram of a lens adjustment mechanism of a full-flow oil dynamic wear particle online monitoring device according to an embodiment of the present invention;

[0031] Figure 2 A schematic diagram of the lens structure of a full-flow oil dynamic wear particle online monitoring device according to an embodiment of the present invention;

[0032] Figure 3 It is a schematic structural diagram of an oil observation mechanism and an observation adjustment mechanism of a full-flow oil dynamic wear particle online monitoring device according to an embodiment of the present invention;

[0033] Figure 4 A schematic diagram of the frame cover structure of a full-flow oil dynamic wear particle online monitoring device according to an embodiment of the present invention;

[0034] Figure 5 It is a schematic diagram of the optical observation window structure of a full-flow oil dynamic wear particle online monitoring device according to an embodiment of the present invention;

[0035] Figure 6 A schematic diagram of an adjustment method of a multi-degree-of-freedom adjustment unit according to an embodiment of the present invention;

[0036] Figure 7 A second schematic diagram of an adjustment method for a multi-degree-of-freedom adjustment unit according to an embodiment of the present invention;

[0037] Figure 8 Schematic diagram of a full-flow oil dynamic wear particle online monitoring system according to an embodiment of the present invention.

[0038] Reference numerals:

[0039] 1 oil pipeline unit, 101 oil tank, 102 oil pipeline, 103 oil stop valve, 104 oil filter, 105 oil pump; 2 multi-degree-of-freedom adjustment unit, 201 rack cover, 201a rack cover upper panel, 201ab small U-shaped hole, 201b cover right panel, 201ba U-shaped groove, 201e cover left panel, 201f rack cover lower panel, 202 lens adjustment mechanism, 202a lens, 202b lens sleeve, 202ba threaded hole, 202bb lens inner cylinder, 202bc sleeve outer cylinder, 202c slide plate, 202d adjustment sleeve, 202e fastening screw, 202f displacement screw, 203 oil observation mechanism, 203a optical observation window, 203aa rectangular quartz glass observation window, 203ab annular quartz glass Observation tube, 203b shock-absorbing ring, 203c oil pipe, 203d quick adapter, 204 observation adjustment mechanism, 204a pressure cover, 204b support block, 204c guide column, 204d adjustment screw, 204e clamping screw, 204f guide piece, 205 light source, 206 ground foot; 3 visible light high-speed camera image acquisition unit, 301 visible light high-speed camera, 302 data acquisition card, 303 data processing PC workstation, 304 data connection line; 4 mechanical working equipment. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] It will be understood by those skilled in the art that, unless expressly stated, the singular forms "one", "said", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other element, or there may be an intermediate element. In addition, the "connection" or "coupling" used herein may include wireless connection or coupling. The term "and / or" used herein includes any unit and all combinations of one or more associated listed items.

[0042] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless defined as herein.

[0043] At present, in my country's oil monitoring equipment based on wear particle analysis, both offline measurement methods such as spectral technology and iron spectrum technology and monitoring methods based on optical images have their own advantages and disadvantages. The present invention provides a full-flow oil dynamic wear particle online monitoring device and a working method thereof, which can collect dynamic wear particle images at high flow rates of the oil lubrication system of large and complex mechanical equipment in real time, and then perform full-flow real-time online monitoring of the lubrication system of large and complex mechanical equipment and perform fault warning.

[0044] The technical solution of the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0045] like Figures 1 to 7 As shown, a full-flow oil dynamic wear particle online monitoring device includes a frame, a frame cover panel 201a is provided with a lens adjustment mechanism 202, combined with Figure 1 and Figure 2As shown, the lens adjustment mechanism 202 includes a lens 202a, which extends into a lens sleeve 202b. The upper side of the outer wall of the lens sleeve 202b is evenly distributed with threaded holes 202ba for fixing and connecting the lens 202a and the lens sleeve 202b. The lens sleeve 202b is composed of a sleeve inner cylinder 202bb and a sleeve outer cylinder 202bc. The outer wall of the sleeve inner cylinder 202bb is smooth. The tail end of the sleeve outer cylinder 202bc is processed with a special fine thread, which is threadedly connected with the adjustment sleeve 202d through the special fine thread. The special fine thread is rotated to achieve high-precision adjustment of the upper and lower positions of the lens 202a, and accurate focusing of the lens 202a is achieved. After the position of the lens 202a is adjusted, the lens sleeve 202b and the adjustment sleeve 202d are fastened together by three fastening screws 202e to prevent the lens sleeve from moving slightly. The adjustment sleeve 202d is welded and fixed to the slide plate 202c. The slide plate 202c is slidably connected to the upper panel 201a of the frame cover through displacement screws 202f. The displacement screws 202f pass through four small U-shaped holes 201ab with bosses on the bottom surface of the upper panel 201a of the frame cover. When the four displacement screws are loosened, the slide plate 202c can move forward and backward along the X axis. When the entire full-flow oil dynamic wear particle online monitoring device rotates 180° clockwise around the Y axis, the slide plate 202c can move up and down along the Z axis when the four displacement screws 202f are loosened.

[0046] The lens adjustment mechanism 202 passes through the upper panel 201a of the frame cover and extends into the inner side of the frame. The present embodiment is not limited to setting the lens adjustment mechanism 202 on the upper panel 201a of the frame cover. The lens adjustment mechanism 202 can also be set in multiple directions on the upper panel of the frame cover, the front panel of the machine cover, etc., to achieve multi-directional observation. The irradiation position of the lens 202a corresponds to the oil observation mechanism 203. The observation adjustment mechanism 204 is connected below the oil observation mechanism 203 to fix, support and adjust the oil observation mechanism 203. Figure 3 and Figure 4As shown, the oil observation mechanism 203 includes an optical observation window 203a corresponding to the irradiation position of the lens 202a, and the oil pipe 203c passes through the vibration reduction ring 203b and is connected to the left and right sides of the optical observation window 203a. The oil pipe 203c is threadedly connected to the quick adapter 203c, so that the oil pipeline 102 of the device of the present invention can be connected with the oil pipe 203c when in use, and the oil to be measured is connected. The oil observation mechanism 203 is symmetrical along the X axis, and the vibration reduction ring 203b is made of rubber. The vibration reduction ring 203b is nested in the outer wall of the oil pipe 203c to isolate the influence of system vibration on the optical observation window 203a. The observation adjustment mechanism 204 includes a semi-circular annular pressure cover 204a fixed above the circular quartz glass observation tube 203ab, and a support block 204b fixed below the circular quartz glass observation tube 203ab for positioning and supporting. The pressure cover 204a is fixedly connected to the support block 204b by a clamping screw 204e. One end of the guide column 204c and the adjusting screw 204d penetrates the connecting support block 204b, and the other end is fixed on the lower panel 201f of the frame cover. The supporting block 204b is adjusted to move up and down by rotating the rotating nut of the adjusting screw 204d. The left panel 201e and the right panel 201b of the frame cover are provided with a U-shaped groove 201ba, and the guide piece 204f is slidably connected in the U-shaped groove 201ba. The guide piece 204f is fixedly connected to the oil pipe 203c, so that when the supporting block 204b moves up and down, the oil pipe 203c is driven to move up and down, and the guide piece 204f slides up and down in the U-shaped groove 201ba accordingly.

[0047] like Figure 5 As shown, the optical observation window 203a includes a rectangular quartz glass observation window 203aa and a circular quartz glass observation tube 203ab. The circular quartz glass observation tube 203ab passes through the rectangular quartz glass observation window 203aa and is fixed by gluing. Two micro holes are opened on the top of the rectangular quartz glass observation window 203aa for injecting the same oil as that passing through the circular quartz glass observation tube 203ab, so as to reduce the scattering of the circular glass tube and improve the shooting clarity of the visible light high-speed camera 301.

[0048] A light source 205 is provided below the rectangular quartz glass observation window 203aa. The light source 205 is a white ring light source, which is connected to a power source through a power connection line. The light source power line passes through a U-shaped hole on the outer edge of the lower panel 201f of the rack cover and is connected to the power source. The light source 205 provides a transmitted light source for the optical observation window 203a, thereby improving the shooting accuracy of the image of the visible light camera 301.

[0049] The present invention discloses a working method of a full-flow oil dynamic wear particle online monitoring device.

[0050] Step 1, access the system: the oil pipeline unit 1, the mechanical working equipment 4 and the multi-degree-of-freedom adjustment unit 2 are connected in a closed loop in sequence through the oil pipeline 102, and the multi-degree-of-freedom adjustment unit 2 is also electrically connected to the visible light high-speed camera image acquisition unit 3.

[0051] Step 2: The oil in the tested mechanical working equipment 4 flows into the annular quartz glass observation tube 203ab through the oil pipeline 102, and the same oil is injected into the rectangular quartz glass observation window 203aa.

[0052] Step three, adjust the visible light high-speed camera image acquisition unit 3 to make the lens 202a of the visible light high-speed camera 301 accurately focused; adjust the multi-degree-of-freedom adjustment unit 2 to adjust the collected oil image.

[0053] There are two ways to adjust the multi-degree-of-freedom adjustment unit:

[0054] Method 1: If Figure 6 As shown, the axis of the oil observation mechanism 203 is parallel to the Y axis, and the axis of the lens 202a is parallel to the Z axis. After the visible light high-speed camera lens is focused, the oil image in the circular quartz glass observation tube 203ab in the rectangular quartz glass observation window 203aa can be collected from the Z axis direction, wherein the collected oil image is a top view image of the oil tube, and the dynamic image of the overall wear particle distribution of the oil tube can be captured.

[0055] Method 2: If Figure 7 As shown, the axis of the oil observation mechanism 203 is parallel to the Y axis, and the axis of the lens 202a is parallel to the X axis. After the visible light high-speed camera lens is focused, the oil image in the annular quartz glass observation tube 203ab in the rectangular quartz glass observation window 203aa can be collected from the X axis direction, wherein the collected oil image is the main view image of the oil tube, and the layered dynamic images of different flow layers and different abrasive particles of the oil tube can be captured.

[0056] Step 4: The visible light high-speed camera image acquisition unit 3 continuously acquires full-flow real-time images of the oil image in the optical observation window 203a.

[0057] Step 5: While collecting the full flow real-time image in step 4, the data processing PC workstation 303 is used to identify the particles and bubbles in the oil and the types of abrasive particles.

[0058] like Figure 8 As shown, a full-flow oil dynamic wear particle online monitoring system disclosed in step 1 is shown:

[0059] The full-flow oil dynamic wear particle online monitoring system includes: an oil pipeline unit 1, a multi-degree-of-freedom adjustment unit 2, a visible light high-speed camera image acquisition unit 3 and a mechanical working device 4. The oil pipeline unit 1 is used to filter the particulate impurities in the oil on the oil inlet side and provide a full-flow circulation channel for the oil with equipment wear particles after passing through the mechanical equipment with oil circulation lubrication. The oil pipeline unit 1 includes an oil tank 101, and the oil tank 101 is connected to an oil stop valve 103 and an oil filter 104 in sequence through an oil pipeline 102. The oil filter 104 is connected to the mechanical working device 4, which is a large and complex mechanical equipment with an oil lubrication system. The mechanical working equipment 4 is connected to the multi-degree-of-freedom adjustment unit 2 to precisely adjust the position of the visible light high-speed camera 301 and the oil observation mechanism 203 on the Z-axis coordinate axis. The multi-degree-of-freedom adjustment unit 2 is connected to the visible light high-speed camera image acquisition unit 3, so that the system can monitor the dynamic oil image information of different sections in the pipeline at different coordinate axis angles such as the X-axis or Z-axis, capture the dynamic images of different abrasive particles on different flow layers of the full-flow oil pipeline, store and process the image data, and then analyze the particulate matter in the oil and provide fault diagnosis warning. The visible light high-speed camera image acquisition unit includes a visible light high-speed camera 301, which transmits data to the data acquisition card 302 through the data connection line 304, and after conversion, transmits it to the data processing PC workstation 303 for processing, storage and calculation, and predicts and diagnoses faults during the operation of the equipment system. The oil passes through the multi-degree-of-freedom adjustment unit 2 and is connected to the oil filter 104 and the oil pump 105 in turn through the oil pipeline 102 to flow back to the oil tank 101 to form a closed loop. The oil is stored in the oil tank 101 and flows through the oil stop valve 103 through the oil pipeline 102. The oil stop valve 103 is used to control the opening and closing of the oil passage in the pipeline. When the oil stop valve 103 is opened, the oil continues to flow through the oil filter 104 to filter out particulate impurities, then flows through the mechanical working equipment 4 and is monitored in real time by the multi-degree-of-freedom adjustment unit 2. Finally, it circulates into the oil filter 104, provides power for the entire oil pipeline 102 through the oil pump 105, and flows into the oil tank 101.

[0060] In summary, the full-flow oil dynamic wear particle online monitoring device disclosed in the present invention can monitor the oil in real time and collect images through a visible light high-speed camera. Through the interaction of the lens adjustment mechanism, the oil observation mechanism and the observation adjustment mechanism, the accuracy of the image collected by the device can be adjusted, and the dynamic oil image information of different sections in the pipeline can be monitored at different coordinate axis angles such as the X-axis or Z-axis. Combined with the method of using the device, it can collect dynamic images of high-speed flowing lubricating oil in large and complex mechanical lubrication systems under real-time full-flow conditions. Combined with image processing algorithms, it can accurately monitor and distinguish wear particles or bubbles of different components appearing in the oil pipeline in real time, and then accurately judge the real-time wear condition of mechanical equipment, predict lubrication system equipment failures in advance, and improve the working reliability of large and complex mechanical lubrication systems.

[0061] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A working method of a full-flow oil dynamic wear particle online monitoring device, characterized in that: A full-flow oil dynamic wear particle online monitoring device is provided, the device comprising a frame, a lens adjustment mechanism (202) for adjusting the position and accuracy of a visible light high-speed camera is provided on the frame, an oil observation mechanism (203) is provided at a corresponding shooting position of the visible light high-speed camera, and an observation adjustment mechanism (204) for fixing, supporting and adjusting the oil observation mechanism (203) is connected below the oil observation mechanism (203); The oil observation mechanism (203) comprises an optical observation window (203a) and an oil pipe (203c); the oil pipe (203c) passes through a vibration-damping ring (203b) and is connected to the left and right sides of the optical observation window (203a); a light source (205) for providing a transmission light source is provided below the optical observation window (203a); the optical observation window (203a) comprises a hollow annular quartz glass observation tube (203ab) and a rectangular parallelepiped quartz glass tube sleeved on the outside thereof. A quartz glass observation window (203aa); the observation adjustment mechanism (204) comprises a support block (204b) fixed below the annular quartz glass observation tube (203ab) for positioning and supporting, and a guide piece (204f) connected to both ends of the oil pipe (203c); a U-shaped groove (201ba) is formed on the left cover plate (201e) and the right cover plate (201b) of the frame, and the guide piece (204f) is slidably connected in the U-shaped groove (201ba); The working method of the online monitoring device includes: Step 1: connecting to the system: the oil pipeline unit (1), the mechanical working equipment (4) and the multi-degree-of-freedom adjustment unit (2) are connected in a closed loop in sequence through the oil pipeline (102); the multi-degree-of-freedom adjustment unit (2) is also electrically connected to the visible light high-speed camera image acquisition unit (3); Step 2: the oil in the tested mechanical working equipment (4) flows into the annular quartz glass observation tube (203ab) through the oil pipeline (102), and the same oil is injected into the rectangular quartz glass observation window (203aa); Step three, adjusting the visible light high-speed camera image acquisition unit (3) to accurately focus the lens (202a) of the visible light high-speed camera (301); adjusting the multi-degree-of-freedom adjustment unit (2) to adjust the collected oil image; Step 4: The visible light high-speed camera image acquisition unit (3) continuously acquires full-flow real-time images of the oil in the optical observation window (203a); Step 5: While collecting the full flow real-time image in step 4, the data processing PC workstation (303) is used to identify the particles and bubbles in the oil and the types of abrasive particles.

2. The working method of the full-flow oil dynamic wear particle online monitoring device according to claim 1 is characterized by: The lens adjustment mechanism (202) comprises a lens (202a) connected to the visible light high-speed camera, the lens (202a) extending into a lens sleeve (202b), the lens sleeve (202b) being fixedly connected to a slide plate (202c) via an adjustment sleeve (202d), and the slide plate (202c) being slidably connected to the frame.

3. The working method of the full-flow oil dynamic wear particle online monitoring device according to claim 2 is characterized by: The lens sleeve (202b) is formed by a sleeve inner cylinder (202bb) and a sleeve outer cylinder (202bc) being sleeved together via threads.

4. The working method of the full-flow oil dynamic wear particle online monitoring device according to claim 1 is characterized in that: The observation adjustment mechanism (204) further comprises a guide column (204c) and an adjustment screw (204d) for adjusting the height, wherein one end of the guide column (204c) and the adjustment screw (204d) are connected to the support block (204b), and the other end is connected to the lower panel (201f) of the rack cover.

5. The working method of the full-flow oil dynamic wear particle online monitoring device according to claim 1 is characterized in that: The adjustment method of the visible light high-speed camera image acquisition unit (3) is: rotating to adjust the upper and lower distance of the lens sleeve (202b) and / or sliding to adjust the front and rear distance of the slide plate (202c), so as to accurately adjust the distance of the visible light high-speed camera (301) on the X-axis and / or Z-axis, so as to accurately focus the lens (202a) of the visible light high-speed camera (301).

6. The working method of the full-flow oil dynamic wear particle online monitoring device according to claim 1 or 5, characterized in that: The adjustment method of the multi-degree-of-freedom adjustment unit (2) is as follows: the axis of the oil observation mechanism (203) is placed parallel to the Y axis, and the axis of the lens (202a) is placed parallel to the Z axis or the X axis.

Images