An online ferrography detection device and detection method for marine internal combustion engine lubricating oil

Abstract

The invention discloses an online ferrography detection device and a detection method for lubricating oil of a ship internal combustion engine. The online ferrography detection device collects oil samples online by using a lubricating oil return bypass, drives abrasive particles in the oil sample to move by using an ultrasonic phased array transducer, separates abrasive particles of different particle sizes in a wedge-shaped abrasive particle separation wedge groove, and then takes a ferrography picture of the abrasive particles; after taking a complete ferrography picture, the ultrasonic phased array transducer is used to drive the abrasive particles to separate from the wedge-shaped abrasive particle separation wedge groove, thereby completing the online ferrography automatic detection of the lubricating oil of the ship internal combustion engine; the online ferrography detection device of the invention has a simple structure, a small size, and high reliability, and is suitable for being installed in a harsh environment at a working site of a ship internal combustion engine to perform online ferrography detection of the lubricating oil of the ship internal combustion engine; the device does not need to use chemical solvents during operation, and does not generate waste oil samples after detection, so that daily maintenance work is not required.

Description

Technical Field

[0001] The invention belongs to the technical field of on-line ferrography detection of lubricating oil, and in particular relates to an on-line ferrography detection device and a detection method for lubricating oil of a ship internal combustion engine. Background Art

[0002] Ferrography analysis technology can be used to diagnose and monitor the wear status of ship internal combustion engines during operation, thereby improving the reliability and safety of ship operation; however, the existing mature ferrography analysis technology takes samples from the lubricating oil of running ship internal combustion engines and analyzes the samples in the laboratory, so online detection cannot be achieved.

[0003] The Chinese invention patent with application number 201910250864.1 discloses an online intelligent detection iron spectrum analyzer and its detection method. The oil to be tested enters the ultrasonic oscillator through the oil inlet interface, the oil inlet flange, the oil pipeline, the two-position two-way valve and the oil outlet pipe, and is mixed with tetrachloroethylene. After the substrate is pushed to the spectrum making sleeve by the rack push plate, the magnetic field is turned on, and the mixed oil flows through the substrate to complete the spectrum making. The spectrum sheet is pushed to the camera by the rack push plate to complete the identification and storage of the iron spectrum, and then tetrachloroethylene is injected into the ultrasonic oscillator and made to flow through the spectrum making sleeve to complete the cleaning; the execution and stop of all actions are controlled by comparing the number of placed substrates and the number of cycles.

[0004] The online intelligent detection iron spectrum analyzer of this invention is essentially a fully automated implementation of the existing laboratory iron spectrum analysis process. Therefore, its structure is complex and large. In addition, the working conditions at the ship internal combustion engine are harsh, which also leads to its low reliability. It is actually not suitable for online detection at the working site of the ship internal combustion engine.

[0005] In addition, the existing online intelligent detection iron spectrum analyzer requires the use of chemical solvents during the detection process, so regular maintenance and replenishment of chemical reagents are required, and the oil sample after detection cannot be returned to the lubrication system. When the online detection frequency is high and the work is long, the actual oil sampling volume is large, and the waste oil sample after detection needs to be cleaned regularly, which increases the workload of daily maintenance. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide an online ferrography detection device and a detection method for ship internal combustion engine lubricating oil, which solves the problem that ship internal combustion engine lubricating oil cannot be detected online in the prior art.

[0007] The present invention adopts the following technical solutions to solve the above technical problems:

[0008] The on-line iron spectrum detection device for lubricating oil of a ship internal combustion engine comprises a housing, a spectrum sheet component, an ultrasonic phased array transducer, and a microscopic camera module; the housing is provided with a lubricating oil detection channel, and the spectrum sheet component is provided with a base block lubricating oil through hole and an abrasive grain separation wedge groove;

[0009] The spectrum sheet assembly is arranged in the housing, and the lubricating oil detection channel is connected with the lubricating oil through hole of the base block;

[0010] The ultrasonic phased array transducer is arranged on one side of the spectrum sheet assembly, and the microscopic camera module is arranged on the other side of the spectrum sheet assembly; the lubricating oil enters the lubricating oil through hole of the base block through the lubricating oil detection channel, and the ultrasonic phased array transducer drives the abrasive particles in the lubricating oil to move to the abrasive particle separation wedge groove, and the abrasive particles of different particle sizes are separated by using the wedge-shaped gap of the abrasive particle separation wedge groove;

[0011] The microscope camera module takes pictures of the abrasive particles after separation, which is used for comprehensive analysis of the size, morphology and color of the abrasive particles to obtain the operating conditions, wear locations and wear status of the ship's internal combustion engine.

[0012] A lubricating oil main channel connected in parallel with the lubricating oil detection channel is also provided in the shell.

[0013] The spectrum sheet component includes a spectrum sheet base block and a spectrum sheet cover plate; the spectrum sheet base block is provided with a base block lubricating oil through hole, and adjacent base block lubricating oil through holes are provided with base block inclined groove surfaces; the spectrum sheet cover plate is arranged in contact with the spectrum sheet base block, and an abrasive separation wedge groove connected to the base block lubricating oil through hole is formed between the base block inclined groove surface and the spectrum sheet base block.

[0014] Electromagnets are arranged on the sides of the abrasive grain separation wedge grooves of adjacent spectrum sheet assemblies.

[0015] The microscope camera module includes a transverse slide, a longitudinal slide, and a camera module. The transverse slide is movably connected to the shell, the longitudinal slide is movably connected to the transverse slide, and the camera module is fixedly connected to the longitudinal slide. The transverse slide and the longitudinal slide are driven by a linear motor, and the longitudinal slide drives the camera module to perform line-by-line scanning movement.

[0016] A solenoid valve is provided on the lubricating oil detection channel.

[0017] A main control board is also provided; the ultrasonic phased array transducer, the microscopic camera module, the electromagnet, the solenoid valve, and the linear motor are all electrically connected to the main control board.

[0018] The detection method of the on-line ferrography detection device for lubricating oil of a ship internal combustion engine comprises the following steps:

[0019] Step S1, using an ultrasonic phased array transducer, an electromagnet, and an electromagnetic valve to work together to separate and fix abrasive particles in the lubricating oil;

[0020] Step S2, using a microscopic camera module to take ferrographic pictures, and analyzing the ferrographic pictures through a main control board to obtain operating conditions, wear parts and wear status information of the ship's internal combustion engine;

[0021] Step S3, the ultrasonic phased array transducer, the electromagnet, and the solenoid valve cooperate to discharge the abrasive particles in the abrasive particle separation wedge groove;

[0022] Step S4, setting a cycle, repeating steps S1 to S3, and realizing online real-time ferrography detection of lubricating oil of ship internal combustion engines.

[0023] In step S1 and step S3, the specific process of separating, fixing and discharging the abrasive particles in the lubricating oil is as follows:

[0024] Separation, control the electromagnet to be energized, and the solenoid valve to be de-energized; the ultrasonic focusing generated by the ultrasonic phased array transducer generates a linear ultrasonic focus, which scans from the lubricating oil through hole side of the base block to the abrasive separation wedge groove side at a set frequency, drives the abrasive particles in the lubricating oil to move into the abrasive separation wedge groove, and uses the wedge-shaped gap of the abrasive separation wedge groove to separate abrasive particles of different particle sizes at different positions in the width direction of the abrasive separation wedge groove;

[0025] Fixed, when the abrasive particles are separated in the abrasive particle separation wedge groove, the ultrasonic phased array transducer stops working, and the electromagnet remains energized, so that the position of the abrasive particles in the abrasive particle separation wedge groove remains fixed;

[0026] Discharge, control the electromagnet to cut off the power, and energize the solenoid valve; the ultrasonic focusing generated by the ultrasonic phased array transducer generates a linear ultrasonic focus, which scans from the side of the abrasive separation wedge groove to the side of the base block lubricating oil through hole at a set frequency, driving the abrasive particles in the abrasive separation wedge groove to move to the base block lubricating oil through hole.

[0027] The specific process of step S2 is as follows:

[0028] The longitudinal slide drives the camera module to scan line by line, taking magnified local ferrogram pictures frame by frame, and synthesizing the local ferrogram pictures to obtain a complete ferrogram picture; the complete ferrogram picture is automatically identified and analyzed to obtain the operating conditions, wear parts and wear status information of the ship's internal combustion engine.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. The present invention discloses an online ferrography detection device and a detection method, which utilizes a lubricating oil return bypass to collect oil samples online, utilizes an ultrasonic phased array transducer to drive the movement of abrasive particles in the oil sample, separates abrasive particles of different particle sizes in a wedge-shaped abrasive particle separation groove, and then takes a ferrography picture of the abrasive particles; after taking a complete ferrography picture, the ultrasonic phased array transducer is used to drive the abrasive particles to separate from the wedge-shaped abrasive particle separation groove, thereby completing the online ferrography automatic detection of the lubricating oil of a ship internal combustion engine.

[0031] 2. The online ferrography detection device of the present invention has a simple structure, a compact size, and high reliability. It is suitable for installation in the harsh environment of a ship internal combustion engine working site to perform online ferrography detection of the ship internal combustion engine lubricating oil.

[0032] 3. The device does not require the use of chemical solvents during operation, nor does it produce waste oil samples after testing, so there is no need for daily maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 The appearance of the online ferrography detection device is shown in Figure 1. Figure 1 .

[0034] Figure 2 The appearance of the online ferrography detection device is shown in Figure 1. Figure 2 .

[0035] Figure 3 This is a schematic diagram of the structural decomposition of the online iron spectrum detection device.

[0036] Figure 4 This is a schematic diagram of the shell appearance.

[0037] Figure 5 It is a schematic diagram of the shell cross-section structure.

[0038] Figure 6 This is a schematic diagram of the decomposition structure of the spectrum component.

[0039] Figure 7 This is a schematic diagram of the appearance of the fill light module.

[0040] Figure 8 This is a schematic diagram of the appearance of an electromagnet.

[0041] Fig. 9 This is a schematic diagram of the appearance of the solenoid valve.

[0042] Fig.10 This is the appearance of the microscope camera module Figure 1 .

[0043] Fig.11 This is the appearance of the microscope camera module Figure 2 .

[0044] Fig.12 Schematic diagram of the structural decomposition of the microscope camera module.

[0045] Fig.13 This is a schematic diagram of the appearance of the lateral slide.

[0046] Fig.14 This is a schematic diagram of the appearance of the longitudinal slide.

[0047] Fig.15 This is a schematic diagram of the appearance of the blade linear motor.

[0048] Fig.16 Schematic diagram of the cutaway of the online ferrography detection device Figure 1 .

[0049] Fig.17 Schematic diagram of the cutaway of the online ferrography detection device Figure 2 .

[0050] Fig.18 Schematic diagram of the cutaway of the online ferrography detection device Figure 2 A partial enlarged schematic diagram.

[0051] Fig.19 This is a schematic diagram of the overall appearance of the online iron spectrum detection device.

[0052] Fig. 20 It is a schematic diagram of the exploded structure of the online iron spectrum detection device, base plate, and dust cover.

[0053] Fig.21 Schematic diagram of the working process of the linear ultrasonic focus generated by the ultrasonic phased array transducer.

[0054] The symbols in the figure are: 1-online iron spectrum detection device; 1.1-housing; 1.1.1-transducer mounting hole; 1.1.2-fill light module mounting hole; 1.1.3-lubricating oil main channel; 1.1.4-lubricating oil detection channel; 1.1.5-electromagnet mounting hole; 1.1.6-solenoid valve mounting hole; 1.2-spectrum sheet assembly; 1.2.1-spectrum sheet base block; 1.2.1.1-base block lubricating oil Oil through hole; 1.2.1.2-base block inclined groove surface; 1.2.2-spectrum cover plate; 1.2.3-abrasive separation wedge groove; 1.3-ultrasonic phased array transducer; 1.4-microscope camera module; 1.4.1-transverse slide; 1.4.1.1-transverse slide side plate; 1.4.1.2-motor connection hole; 1.4.1.3-camera module slot; 1.4.2-longitudinal slide; 1.4.2.1-motor 1.4.2.2-guide rod sliding boss; 1.4.2.3-camera module hole; 1.4.3-camera module; 1.4.4-blade linear motor; 1.4.4.1-motor body; 1.4.4.2-motor drive rod; 1.4.5-longitudinal slide guide rod; 1.4.6-guide rod fixing block A; 1.4.7-guide rod fixing block B; 1.5-fill light module; 1.5.1- Fill light holder; 1.5.2-fill light strip; 1.6-electromagnet; 1.7-gasket; 1.8-transducer fixing frame; 1.9-main control board; 1.10-electromagnet fixing block; 1.11-solenoid valve; 1.11.1-solenoid valve coil; 1.11.2-valve core return spring; 1.11.3-valve core; 1.12-solenoid valve fixing plate; 2-bottom plate; 2.1-elastic pressure block; 3-dust cover. DETAILED DESCRIPTION

[0055] The structure and working process of the present invention will be further described below in conjunction with the accompanying drawings.

[0056] The purpose of the present invention is to overcome the shortcomings in the background technology and provide an online ferrography detection device for ship internal combustion engine lubricating oil. The online ferrography detection device collects oil samples online by using the lubricating oil return bypass, drives the movement of abrasive particles in the oil sample by using an ultrasonic phased array transducer, separates abrasive particles of different particle sizes in a wedge-shaped abrasive particle separation wedge groove, and then takes a ferrography picture of the abrasive particles; after taking the complete ferrography picture, the ultrasonic phased array transducer is used to drive the abrasive particles to separate from the wedge-shaped abrasive particle separation wedge groove, thereby completing the online ferrography automatic detection of the ship internal combustion engine lubricating oil.

[0057] The specific plan is as follows:

[0058] The on-line iron spectrum detection device for lubricating oil of a ship internal combustion engine comprises a shell, a spectrum plate component, an ultrasonic phased array transducer, and a microscopic camera module. The shell is provided with a lubricating oil detection channel, and the spectrum plate component is provided with a base block lubricating oil through hole and an abrasive particle separation wedge groove; the spectrum plate component is arranged in the shell, and the lubricating oil detection channel is connected with the base block lubricating oil through hole; the ultrasonic phased array transducer is arranged on one side of the spectrum plate component, and the microscopic camera module is arranged on the other side of the spectrum plate component; the lubricating oil enters the base block lubricating oil through hole through the lubricating oil detection channel, and the ultrasonic phased array transducer drives the abrasive particles in the lubricating oil to move to the abrasive particle separation wedge groove, and uses the wedge-shaped gap of the abrasive particle separation wedge groove to separate abrasive particles of different particle sizes; the microscopic camera module takes pictures of the separated abrasive particles, and obtains the operating conditions, wear parts and wear states of the ship diesel internal combustion engine through comprehensive analysis of the abrasive particle size, morphology and color.

[0059] Furthermore, a main lubricating oil channel is also provided in the shell, and the main lubricating oil channel is connected to the lubricating oil detection channel in parallel; when the lubricating oil flows through the main lubricating oil channel, there will be a pressure difference between the two connecting ports of the main lubricating oil channel and the lubricating oil detection channel, and the pressure difference will cause the lubricating oil to flow through the lubricating oil detection channel. The flow rate of the lubricating oil in the lubricating oil detection channel is related to the aperture ratio, length ratio and viscosity of the lubricating oil between the main lubricating oil channel and the lubricating oil detection channel. When the viscosity of the lubricating oil is constant, the flow rate of the lubricating oil in the lubricating oil detection channel can be controlled by reasonably designing the aperture ratio and length ratio of the main lubricating oil channel and the lubricating oil detection channel.

[0060] Furthermore, the spectrum sheet component includes a spectrum sheet base block and a spectrum sheet cover plate. The spectrum sheet base block and the spectrum sheet cover plate are both made of transparent quartz glass. Quartz glass has the characteristics of high hardness, which can avoid scratches caused by abrasive particles during long-term operation, thereby increasing the service life of the spectrum sheet component; a base block lubricating oil through hole is provided on the spectrum sheet base block, and a base block inclined groove surface is provided on the adjacent base block lubricating oil through hole; the spectrum sheet cover plate is arranged in contact with the spectrum sheet base block, and an abrasive particle separation wedge groove connected to the base block lubricating oil through hole is formed between the base block inclined groove surface and the spectrum sheet base block; see the attached manual Fig.18 When the abrasive particles in the lubricating oil in the lubricating oil through hole of the base block move to the abrasive particle separation wedge groove on the right side under the drive of the ultrasonic phased array transducer, since the gap of the abrasive particle separation wedge groove gradually narrows from left to right, the abrasive particles with smaller particle sizes enter the abrasive particle separation wedge groove to a deeper depth, while the abrasive particles with larger particle sizes enter the abrasive particle separation wedge groove to a shallower depth, so the abrasive particles will automatically complete separation in the abrasive particle separation wedge groove according to the particle size; in addition, when the ultrasonic phased array transducer drives the abrasive particles to move, the abrasive particles with smaller particle sizes move faster, and the abrasive particles with larger particle sizes move slower, so the abrasive particles can also be prevented from stacking in the abrasive particle separation wedge groove.

[0061] Furthermore, an electromagnet is provided on the side of the abrasive separation wedge groove of the adjacent spectrum slice assembly; when the ultrasonic phased array transducer drives the abrasive particles to enter the abrasive separation wedge groove, direct current is passed through the electromagnet to generate a magnetic field on the side of the abrasive separation wedge groove of the spectrum slice assembly, and the magnetic field accelerates the speed at which the ferrous abrasive particles move toward the abrasive separation wedge groove, thereby shortening the separation time in the abrasive separation wedge groove; in addition, after the abrasive particles are separated in the abrasive separation wedge groove, the magnetic field will also keep the separated abrasive particles in the abrasive separation wedge groove stationary, so as to facilitate the subsequent shooting of microscopic images (microscopic images are taken in a line-by-line scanning manner, and the shooting time is relatively long).

[0062] Furthermore, a fill light module is provided on the side of the microscope camera module, and the fill light module adopts wide color gamut LED lamp beads to improve the color restoration of the abrasive particles in the captured microscope pictures.

[0063] Furthermore, a solenoid valve is provided on the lubricating oil detection channel; when the abrasive particles in the lubricating oil are separated, fixed and photographed, the solenoid valve is powered off, the lubricating oil detection channel is closed, and the lubricating liquid in the lubricating oil detection channel stops flowing. The number of abrasive particles finally separated is only related to the number of abrasive particles in the lubricating oil stored in the lubricating oil detection channel. Therefore, the wear state of the ship's internal combustion engine and whether the lubricating oil needs to be replaced can also be judged based on the number of abrasive particles in the photographed pictures.

[0064] Furthermore, a transducer fixing frame is arranged around the ultrasonic phased array transducer. The transducer fixing frame is made of rubber material or polyurethane material. The elasticity of the rubber material or polyurethane material is used to eliminate the installation gap between the ultrasonic phased array transducer and the shell, and at the same time, it is prevented that the shell squeezes the ultrasonic phased array transducer and causes damage to it when the shell changes size due to temperature.

[0065] Furthermore, the microscopic camera module includes a transverse slide, a longitudinal slide, and a camera module. The transverse slide is movably connected to the shell, the longitudinal slide is movably connected to the transverse slide, and the camera module is fixedly connected to the longitudinal slide; the transverse slide and the longitudinal slide are driven by a linear motor, and the longitudinal slide drives the camera module to perform line-by-line scanning movement; in the online iron spectrum detection device of the present invention, the camera module adopts a magnification of 400 times, so its field of view is extremely small. In order to obtain a microscopic camera picture with a larger field of view, line-by-line scanning and frame-by-frame photography are adopted to obtain several microscopic camera pictures with a smaller field of view. After the shooting is completed, the several microscopic camera pictures with a smaller field of view are synthesized to finally form a complete microscopic camera picture with a larger field of view. Therefore, during the shooting process, there are high requirements for the response speed and positioning accuracy of the camera module drive; for this reason, the linear motor uses a micro-blade linear motor, which has the advantages of small size, high control accuracy and fast response speed, can reduce the volume of the online iron spectrum detection device, and improve the response speed and positioning accuracy of the microscopic picture scanning and shooting process.

[0066] Furthermore, a main control board is also provided in the online iron spectrum detection device; the ultrasonic phased array transducer, the microscopic camera module, the fill light module, the electromagnet, the solenoid valve, and the linear motor are electrically connected to the main control board; during the operation of the online iron spectrum detection device, the main control board controls the coordinated actions of the ultrasonic phased array transducer, the microscopic camera module, the fill light module, the electromagnet, the solenoid valve, and the linear motor.

[0067] Specific embodiments, such as Figures 1 to 21 As shown,

[0068] See the instruction manual Figure 1 , Figure 2 , Figure 3 : An online iron spectrum detection device 1 for lubricating oil of a ship internal combustion engine comprises a housing 1.1, a spectrum sheet assembly 1.2, an ultrasonic phased array transducer 1.3, a microscopic camera module 1.4, a fill light module 1.5, an electromagnet 1.6, a gasket 1.7, a transducer fixing frame 1.8, a main control board 1.9, and a solenoid valve 1.11.

[0069] See the instruction manual Figure 4 , Figure 5The shell 1.1 is a rectangular block made of aluminum alloy; there are a transducer mounting hole 1.1.1 and a fill light module mounting hole 1.1.2 in the middle, which are interconnected; near the right side, there are a main lubricating oil channel 1.1.3 and a lubricating oil detection channel 1.1.4 that pass through from top to bottom; the main lubricating oil channel 1.1.3 and the lubricating oil detection channel 1.1.4 are connected through transverse oil channels near the upper and lower ends; the lubricating oil detection channel 1.1.4 is connected with the transducer mounting hole 1.1.1; there are an electromagnet mounting hole 1.1.5 and a solenoid valve mounting hole 1.1.6 on the left side of the shell 1.1; the electromagnet mounting hole 1.1.5 is connected with the transducer mounting hole 1.1.1, and the solenoid valve mounting hole 1.1.6 is connected with the lubricating oil detection channel 1.1.4.

[0070] See the instruction manual Figure 6 : The spectrum sheet component 1.2 includes a spectrum sheet base block 1.2.1 and a spectrum sheet cover plate 1.2.2, both of which are made of transparent quartz glass; the spectrum sheet base block 1.2.1 is in the shape of a thick plate, and is provided with a base block lubricating oil through hole 1.2.1.1, and adjacent base block lubricating oil through holes 1.2.1.1 are provided with base block inclined groove surfaces 1.2.1.2; the spectrum sheet cover plate 1.2.2 is in the shape of a thin sheet, and is 0.8 mm thick.

[0071] See the instruction manual Fig.18 : The spectrum sheet cover plate 1.2.2 is arranged to abut against the spectrum sheet base block 1.2.1 up and down, and a wedge-shaped abrasive grain separation wedge groove 1.2.3 connected to the base block lubricating oil through hole 1.2.1.1 is formed between the base block inclined groove surface 1.2.1.2 and the spectrum sheet base block 1.2.1; the spectrum sheet assembly 1.2 is fixedly arranged in the transducer mounting hole 1.1.1 of the housing 1.1 with the spectrum sheet cover plate 1.2.2 facing inward, in order to prevent the spectrum sheet cover plate 1.2.2 from being broken due to uneven force, the spectrum sheet cover plate 1.2 A Teflon gasket 1.7 is arranged between the spectrum chip assembly 1.2 and the bottom of the transducer mounting hole 1.1.1; when the spectrum chip assembly 1.2 is arranged in the shell 1.1, the base block lubricating oil through hole 1.2.1.1 of the spectrum chip assembly 1.2 is connected with the lubricating oil detection channel 1.1.4 of the shell 1.1; in addition, in order to prevent oil leakage after the spectrum chip assembly 1.2 is installed in the shell 1.1, sealant is applied on the four sides of the spectrum chip assembly 1.2 and the outer plate surface of the spectrum chip cover 1.2.2.

[0072] See the instruction manual Figure 3: The ultrasonic phased array transducer 1.3 is in the shape of a rectangular block and is composed of a plurality of transducer arrays. The size of the transducer is 2mm*2mm~3mm*3mm, and the center spacing is 2mm~3mm; the transducer fixing frame 1.8 is in the shape of a rectangular frame and is made of rubber or polyurethane; the ultrasonic phased array transducer 1.3 is arranged in the transducer fixing frame 1.8, and is arranged together in the transducer mounting hole 1.1.1 of the shell 1.1, and the sound wave emitting surface of the ultrasonic phased array transducer 1.3 is in conflict with the spectrum base block 1.2.1; in order to improve the working efficiency of the ultrasonic phased array transducer 1.3, an ultrasonic coupling agent is applied between the sound wave emitting surface of the ultrasonic phased array transducer 1.3 and the spectrum base block 1.2.1.

[0073] See the instruction manual Figure 7 : The fill light module 1.5 includes a fill light holder 1.5.1 and a fill light strip 1.5.2. The fill light holder 1.5.1 is in the shape of a rectangular frame and is made of aluminum alloy. A light strip mounting groove is provided on the inner side of the rectangular frame, and a light strip lead-out groove is provided at one corner of the light strip mounting groove. To improve the uniformity of the fill light, the inner side of the rectangular frame is coated with white reflective paint. The base material of the fill light strip 1.5.2 is polyester film, and wide color gamut LED lamp beads are welded on one side of the surface. The fill light strip 1.5.2 is fixed and bonded to the light strip mounting groove by thermal conductive adhesive.

[0074] See the instruction manual Fig.17 : The fill light module 1.5 is fixed in the fill light module mounting hole 1.1.2 of the shell 1.1 by interference fit, and the inner end face of the fill light module 1.5 contacts the gasket 1.7 to prevent the fill light module 1.5 from crushing the spectrum cover 1.2.2 during the installation process; after the fill light module 1.5 is installed, a part of the lubricating oil detection channel 1.1.4 will be blocked. In order to prevent oil leakage at the fill light module mounting hole 1.1.2 after the fill light module 1.5 is installed, the outer side surface of the fill light module 1.5 and the surrounding contact surface with the gasket 1.7 are sealed when the fill light module 1.5 is installed.

[0075] See the instruction manual Fig.16 , Fig.17 : The electromagnet 1.6 is arranged in the electromagnet mounting hole 1.1.5 of the shell 1.1, and the inner end face of the electromagnet 1.6 abuts against the side of the spectrum plate assembly 1.2, close to the abrasive separation wedge groove 1.2.3; the outer end face of the electromagnet 1.6 abuts against the electromagnet fixing block 1.10 made of aluminum alloy to prevent the electromagnet 1.6 from falling out of the electromagnet mounting hole 1.1.5.

[0076] See the instruction manual Fig. 9 The solenoid valve 1.11 comprises a solenoid valve coil 1.11.1, a valve core return spring 1.11.2 and a valve core 1.11.3. An armature is arranged in the solenoid valve coil 1.11.1.

[0077] See the instruction manual Fig.16 , Fig.17 : The solenoid valve 1.11 is fixedly arranged in the solenoid valve mounting hole 1.1.6 of the housing 1.1, and a solenoid valve fixing plate 1.12 is fixedly arranged at the outer end of the solenoid valve 1.11 to prevent the solenoid valve 1.11 from coming out and leaking oil.

[0078] See the instruction manual Fig.16 : When the online ferrography detection device 1 is not working, the solenoid valve 1.11 is always energized, the valve core 1.11.3 is attracted by the armature in the solenoid valve coil 1.11.1, overcoming the elastic force of the valve core reset spring 1.11.2, opening the lubricating oil detection channel 1.1.4, and the lubricating oil flows through the base block lubricating oil through hole 1.2.1.1; when the online ferrography detection device 1 is working, the solenoid valve 1.11 is de-energized, the valve core 1.11.3 is reset by the valve core reset spring 1.11.2, and the lubricating oil detection channel 1.1.4 is closed. At this time, the lubricating oil in the base block lubricating oil through hole 1.2.1.1 is the ferrography detection sample oil.

[0079] See the instruction manual Fig.10 , Fig.11 , Fig.12 : The microscope camera module 1.4 includes a transverse slide 1.4.1, a longitudinal slide 1.4.2, a camera module 1.4.3, a linear motor, a longitudinal slide guide rod 1.4.5, a guide rod fixing block A1.4.6, and a guide rod fixing block B1.4.7.

[0080] See the instruction manual Fig.15 : The linear motor adopts a commercially available finished micro blade linear motor 1.4.4, which includes a motor body 1.4.4.1 and a motor drive rod 1.4.4.2. When the blade linear motor 1.4.4 is working, the motor drive rod 1.4.4.2 makes a linear motion relative to the motor body 1.4.4.1.

[0081] See the instruction manual Fig.13 : The transverse slide 1.4.1 is a rectangular plate, with transverse slide side plates 1.4.1.1 fixedly arranged on both sides, a motor connection hole 1.4.1.2 is arranged on the transverse slide side plate 1.4.1.1, and a camera module slot 1.4.1.3 is arranged in the middle of the transverse slide side plate 1.4.1.1.

[0082] See the instruction manual Fig.11 : Two blade linear motors 1.4.4 are arranged between the two transverse slide side plates 1.4.1.1 of the transverse slide 1.4.1. Both ends of the motor drive rod 1.4.4.2 of the blade linear motor 1.4.4 are fixedly arranged in the motor connecting hole 1.4.1.2. When the microscope camera module 1.4 is movably connected to the shell 1.1, it is fixedly connected to the shell 1.1 through the motor body 1.4.4.1, and the movement of the motor drive rod 1.4.4.2 drives the transverse slide 1.4.1 to make transverse linear motion.

[0083] See the instruction manual Fig.14 : The longitudinal slide 1.4.2 is a rectangular plate with a camera module hole 1.4.2.3 in the middle, a motor connection boss 1.4.2.1 and a guide rod sliding boss 1.4.2.2 at the bottom, and connection holes are provided in the motor connection boss 1.4.2.1 and the guide rod sliding boss 1.4.2.2.

[0084] See the instruction manual Fig.10 : A blade linear motor 1.4.4 and two longitudinal slide guide rods 1.4.5 are fixedly arranged on the upper part of the transverse slide 1.4.1. The motor body 1.4.4.1 is fixedly connected to the transverse slide 1.4.1. One end of the motor drive rod 1.4.4.2 is fixedly arranged in the connecting hole of the motor connecting boss 1.4.2.1. When the motor drive rod 1.4.4.2 moves, it drives the longitudinal slide 1.4.2 to make longitudinal linear motion; the two longitudinal slide guide rods 1.4.5 are fixedly arranged on the upper part of the transverse slide 1.4.1 through the guide rod fixing block A1.4.6 and the guide rod fixing block B1.4.7. The longitudinal slide guide rod 1.4.5 passes through the connecting hole of the guide rod sliding boss 1.4.2.2. When the longitudinal slide 1.4.2 makes linear motion, the longitudinal slide guide rod 1 .4.5 plays a guiding role; a connecting flange is provided on the outer circumference of the camera module 1.4.3, and the objective lens at the bottom of the camera module 1.4.3 passes through the camera module hole 1.4.2.3 of the longitudinal slide 1.4.2 and the camera module slot 1.4.1.3 of the transverse slide 1.4.1 in sequence, and is arranged on the upper part of the spectrum cover 1.2.2; a gasket is provided between the connecting flange of the camera module 1.4.3 and the longitudinal slide 1.4.2. When the camera module 1.4.3 is installed, the distance between the objective lens and the spectrum cover 1.2.2 is adjusted by adjusting the thickness of the gasket; when the online iron spectrum detection device 1 is working, the camera module 1.4.3 is driven to perform line-by-line scanning movement through the coordinated cooperation of the blade linear motor 1.4.4 on the transverse slide 1.4.1 and the longitudinal slide 1.4.2.

[0085] See the instruction manual Figure 1 : A main control board 1.9 is also provided in the online ferrography detection device 1; the ultrasonic phased array transducer 1.3, the microscopic camera module 1.4, the fill light module 1.5, the electromagnet 1.6, and the electromagnetic valve 1.11 are electrically connected to the main control board 1.9.

[0086] See the instruction manual Fig.19 , Fig. 20: The online iron spectrum detection device 1 is provided with a microscope camera module 1.4, and a dust cover 3 is fixedly provided on one side to prevent foreign matter from contaminating the spectrum cover 1.2.2 of the spectrum assembly 1.2 and affecting the shooting quality of the iron spectrum picture; the online iron spectrum detection device 1 is also fixedly provided with a base plate 2 on the other side, and an elastic pressure block 2.1 is provided in the middle of the base plate 2. The elastic pressure block 2.1 is in conflict with the ultrasonic phased array transducer 1.3 to ensure the contact reliability between the sound wave emitting surface of the ultrasonic phased array transducer 1.3 and the spectrum base block 1.2.1.

[0087] When the online ferrography detection device for lubricating oil of a ship internal combustion engine is installed, there are two installation modes: vertical or horizontal. When the online ferrography detection device is installed horizontally, a microscopic camera module 1.4 is provided with one side facing downward; the lubricating oil main channel 1.1.3 is connected to the lubricating oil return pipeline of the ship internal combustion engine, most of the lubricating oil flows through the lubricating oil main channel 1.1.3, and a small amount of lubricating oil enters the base block lubricating oil through hole 1.2.1.1 through the lubricating oil detection channel 1.1.4, and the ultrasonic phased array transducer 1.3 drives the abrasive particles in the lubricating oil to the abrasive particle separation wedge groove 1.2 .3, and utilizes the wedge-shaped gap of the abrasive separation wedge groove 1.2.3 to separate abrasive particles of different particle sizes; the main control board 1.9 is connected to a data acquisition device, and the data acquisition device is connected to the monitoring center through communication; a number of amplified local ferrography images taken by the online ferrography detection device for the lubricating oil of the ship's internal combustion engine are transmitted to the monitoring center through the data acquisition device, and the monitoring center synthesizes the local ferrography images to obtain a complete ferrography image, and completes the automatic recognition and analysis of the complete ferrography image to obtain the operating condition, wear location and wear status information of the ship's diesel internal combustion engine.

[0088] A detection method of an online ferrography detection device for lubricating oil of a ship internal combustion engine comprises the following steps:

[0089] S1. Separation and fixation of abrasive particles in lubricating oil: see the attached manual Fig.21, the electromagnet 1.6 is energized to generate a magnetic field, attracting the abrasive particles in the lubricating oil to move toward the abrasive particle separation wedge groove 1.2.3; the solenoid valve 1.11 is de-energized to close the lubricating oil detection channel 1.1.4; the ultrasonic focusing generated by the ultrasonic phased array transducer 1.3 generates a linear ultrasonic focus, which scans from the base block lubricating oil through hole 1.2.1.1 to the abrasive particle separation wedge groove 1.2.3 at a set frequency of 10 Hz for 60 seconds, driving the abrasive particles in the lubricating oil to move into the abrasive particle separation wedge groove 1.2.3, The wedge-shaped gap of the abrasive separation wedge groove 1.2.3 is used to set the abrasive particles of different particle sizes at different positions in the width direction of the abrasive separation wedge groove 1.2.3; when the abrasive particles are separated in the abrasive separation wedge groove 1.2.3, the ultrasonic phased array transducer 1.3 stops working, and the electromagnet 1.6 remains energized, so that the position of the abrasive particles in the abrasive separation wedge groove 1.2.3 remains fixed; in the process of the abrasive particles in the lubricating oil driven by the ultrasonic wave moving into the abrasive separation wedge groove 1.2.3, the linear ultrasonic focus has the following characteristics:

[0090] 1. The linear ultrasonic focus generated by the ultrasonic phased array transducer 1.3 actually has a certain diameter. Therefore, when scanning the lubricating oil, what is actually driven is the abrasive particles in a certain volume of lubricating oil;

[0091] 2. During the scanning process, the distance between the linear ultrasonic focus and the inner side of the spectrum cover plate 1.2.2 is always maintained at 5-10μm;

[0092] 3. When the online ferrography detection device is installed vertically, the linear ultrasonic focus is set at an angle of 3°-8° with the vertical direction. This angle generates upward movement in the process of driving the abrasive particles to compensate for the natural downward movement of the abrasive particles in the lubricating oil due to the action of gravity.

[0093] S2. Ferrograph picture shooting: the longitudinal slide 1.4.2 drives the camera module 1.4.3 to scan line by line, and shoots the enlarged local ferrogram picture frame by frame; several enlarged local ferrogram pictures are transmitted to the monitoring center through the data acquisition device, and the monitoring center synthesizes the local ferrogram pictures to obtain a complete ferrogram picture, and completes the automatic recognition and analysis of the abrasive particle size, morphology and color in the complete ferrogram picture, and obtains the operating condition, wear location and wear status information of the ship diesel internal combustion engine.

[0094] S3. Discharge of abrasive particles in the abrasive particle separation wedge groove: the electromagnet 1.6 is powered off and the magnetic field disappears; the solenoid valve 1.11 is powered on, the lubricating oil detection channel 1.1.4 is connected, and the lubricating oil in the base block lubricating oil through hole 1.2.1.1 resumes the flowing state; the ultrasonic focusing generated by the ultrasonic phased array transducer 1.3 generates a linear ultrasonic focus (the linear ultrasonic focus is in a vertical state), and the linear ultrasonic focus scans from the side of the abrasive particle separation wedge groove 1.2.3 to the side of the base block lubricating oil through hole 1.2.1.1 at a set frequency of 10 Hz, and the scanning is continued for 100 seconds, driving the abrasive particles in the abrasive particle separation wedge groove 1.2.3 to move to the base block lubricating oil through hole 1.2.1.1, and the abrasive particles are taken away by the flowing lubricating oil.

[0095] S4, repeating steps S1-S3 with a period of 1 hour to achieve online real-time ferrography detection of lubricating oil of ship internal combustion engines.

[0096] The parts not described in detail in this invention are prior art.

[0097] Those skilled in the art should understand that they can implement variations by combining the prior art and the above embodiments. Such variations do not affect the essence of the present solution and are not described in detail here.

[0098] It should be understood that the present solution is not limited to the above-mentioned specific implementation methods, and the devices and structures not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solution of the present solution without departing from the scope of the technical solution of the present solution, or modify it into an equivalent embodiment with equivalent changes, which does not affect the essential content of the present solution. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present solution without departing from the content of the technical solution of the present solution still falls within the scope of protection of the technical solution of the present solution.

Claims

1. On-line ferrography detection device for lubricating oil of marine internal combustion engines, characterized in that: It includes a shell, a spectrum sheet component, an ultrasonic phased array transducer and a microscopic camera module; the shell is provided with a lubricating oil detection channel, and the spectrum sheet component is provided with a base block lubricating oil through hole and an abrasive grain separation wedge groove; The spectrum sheet assembly is arranged in the housing, and the lubricating oil detection channel is connected with the lubricating oil through hole of the base block; The ultrasonic phased array transducer is arranged on one side of the spectrum sheet assembly, the microscopic camera module is arranged on the other side of the spectrum sheet assembly, and an electromagnet is arranged on the side of the abrasive grain separation wedge groove of the spectrum sheet assembly; the lubricating oil enters the lubricating oil through hole of the base block through the lubricating oil detection channel, and the ultrasonic phased array transducer drives the abrasive grains in the lubricating oil to move into the abrasive grain separation wedge groove, and the abrasive grains of different particle sizes are separated by using the wedge-shaped gap of the abrasive grain separation wedge groove; The microscope camera module takes pictures of the abrasive particles after separation, which is used for comprehensive analysis of the size, morphology and color of the abrasive particles to obtain the operating conditions, wear locations and wear status of the ship's internal combustion engine.

2. The on-line ferrography detection device for lubricating oil of marine internal combustion engines according to claim 1, characterized in that: A lubricating oil main channel connected in parallel with the lubricating oil detection channel is also provided in the shell.

3. The on-line ferrography detection device for lubricating oil of marine internal combustion engines according to claim 1, characterized in that: The spectrum sheet component includes a spectrum sheet base block and a spectrum sheet cover plate; the spectrum sheet base block is provided with the base block lubricating oil through hole, and the spectrum sheet base block is provided with a base block inclined groove surface adjacent to the base block lubricating oil through hole; the spectrum sheet cover plate is arranged in contact with the spectrum sheet base block, and an abrasive separation wedge groove connected to the base block lubricating oil through hole is formed between the base block inclined groove surface and the spectrum sheet cover plate.

4. The on-line ferrography detection device for lubricating oil of marine internal combustion engines according to claim 1, characterized in that: The microscope camera module includes a transverse slide, a longitudinal slide and a camera module. The transverse slide is movably connected to the shell, the longitudinal slide is movably connected to the transverse slide, and the camera module is fixedly connected to the longitudinal slide. The transverse slide and the longitudinal slide are driven by a linear motor, and the longitudinal slide drives the camera module to perform line-by-line scanning movement.

5. The on-line ferrography detection device for lubricating oil of marine internal combustion engines according to claim 1, characterized in that: A solenoid valve is provided on the lubricating oil detection channel.

6. The on-line ferrography detection device for lubricating oil of a marine internal combustion engine according to any one of claims 1 to 5, characterized in that: A main control board is also provided; the ultrasonic phased array transducer, the micro-camera module, the electromagnet, the solenoid valve and the linear motor are all electrically connected to the main control board.

7. The detection method based on the on-line ferrography detection device for lubricating oil of marine internal combustion engines according to claim 6 is characterized in that: The steps include: Step S1, the ultrasonic phased array transducer, the electromagnet and the solenoid valve cooperate to separate and fix the abrasive particles in the lubricating oil; Step S2, using a microscopic camera module to take ferrographic pictures, and analyzing the ferrographic pictures through a main control board to obtain operating conditions, wear parts and wear status information of the ship's internal combustion engine; Step S3, the ultrasonic phased array transducer, the electromagnet and the solenoid valve cooperate to discharge the abrasive particles in the abrasive particle separation wedge groove; Step S4, setting a cycle, repeating steps S1 to S3, and realizing online real-time ferrography detection of lubricating oil of ship internal combustion engines.

8. The detection method of the on-line ferrography detection device for lubricating oil of a marine internal combustion engine according to claim 7, characterized in that: In step S1 and step S3, the specific process of separating, fixing and discharging the abrasive particles in the lubricating oil is as follows: Separation, control the electromagnet to be energized, and the solenoid valve to be de-energized; the ultrasonic focusing generated by the ultrasonic phased array transducer generates a linear ultrasonic focus, which scans from the lubricating oil through hole side of the base block to the abrasive separation wedge groove side at a set frequency, drives the abrasive particles in the lubricating oil to move into the abrasive separation wedge groove, and uses the wedge-shaped gap of the abrasive separation wedge groove to separate abrasive particles of different particle sizes at different positions in the width direction of the abrasive separation wedge groove; Fixed, when the abrasive particles are separated in the abrasive particle separation wedge groove, the ultrasonic phased array transducer stops working, and the electromagnet remains energized, so that the position of the abrasive particles in the abrasive particle separation wedge groove remains fixed; Discharge, control the electromagnet to cut off the power, and energize the solenoid valve; the ultrasonic focusing generated by the ultrasonic phased array transducer generates a linear ultrasonic focus, which scans from the side of the abrasive separation wedge groove to the side of the base block lubricating oil through hole at a set frequency, driving the abrasive particles in the abrasive separation wedge groove to move to the base block lubricating oil through hole.

9. The detection method of the on-line ferrography detection device for lubricating oil of a marine internal combustion engine according to claim 7, characterized in that: The specific process of step S2 is as follows: The longitudinal slide drives the camera module in the microscope camera module to scan line by line, and takes the enlarged local ferrogram picture frame by frame. The local ferrogram pictures are synthesized to obtain a complete ferrogram picture; the complete ferrogram picture is automatically identified and analyzed to obtain the operating conditions, wear parts and wear status information of the ship's internal combustion engine.

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