Oil product real-time monitoring device in thin oil station

Abstract

The invention provides an oil product real-time monitoring device in a thin oil station, and relates to the technical field of lubricating oil detection, the oil product real-time monitoring device comprises the thin oil station and a detection assembly, the thin oil station is provided with an oil supply pipe, an oil return pipe, a first cyclone separation tank and a second cyclone separation tank, and the oil supply pipe is communicated with a first branch pipe; the oil return pipe communicates with a second branch pipe, and the end, away from the oil supply pipe, of the second branch pipe communicates with a second cyclone separation tank in the tangential direction. Overflow ports for discharging oil are formed in the tops of the first cyclone separation tank and the second cyclone separation tank, and drain outlets for collecting pollutants are formed in the bottoms of the first cyclone separation tank and the second cyclone separation tank; and the detection assembly is used for detecting a physical quantity A related to the pollutant concentration of the sewage draining exit of the first cyclone separation tank and a physical quantity B related to the pollutant concentration of the sewage draining exit of the second cyclone separation tank. The method has the advantages that the damage reason of the equipment or the device can be accurately found out, and therefore workers can conveniently carry out accurate and rapid maintenance work.

Description

Technical Field

[0001] This application relates to the technical field of lubricating oil testing, and in particular to a real-time oil monitoring device for a thin oil station. Background Technology

[0002] In large and heavy machinery, the lubricating oil station is a key supporting system that ensures the reliable operation of its core transmission components (such as bearings and gearboxes). Its main function is to provide clean, appropriately temperature-controlled lubricating oil to the friction pairs in large and heavy machinery through forced circulation. The core components of the system include filters for purifying the oil and various sensors for monitoring the oil's condition.

[0003] Traditional oil quality monitoring, whether offline sampling and analysis or online sensor monitoring, typically measures the oil condition at a single point. For example, installing an online particle counter on the supply line only indicates the cleanliness of the oil entering the equipment, but cannot reflect the wear and tear on the equipment itself. Similarly, installing sensors on the return line, while reflecting the amount of wear products, cannot assess the quality of the supplied oil. More importantly, current technology lacks a direct, online method to evaluate the efficiency and health of the filter itself. When the quality of the supplied oil deteriorates, it is difficult to quickly and accurately determine whether the root cause of the fault is accelerated equipment wear or filter failure. This "blind men and the elephant" approach to single-point monitoring leads to a lack of understanding of the overall health of the system and low efficiency in fault diagnosis. Summary of the Invention

[0004] The purpose of this application is to provide a real-time oil monitoring device for a thin oil station, which can accurately identify the cause of equipment or device damage, thereby facilitating accurate and rapid maintenance work by staff.

[0005] The real-time oil monitoring device for a thin oil station provided in this application adopts the following technical solution:

[0006] A thin oil station, wherein the thin oil station is equipped with an oil supply pipe and an oil return pipe;

[0007] The first cyclone separator and the second cyclone separator are installed on the thin oil station. The oil supply pipe is connected to a first branch pipe, and the end of the first branch pipe away from the oil supply pipe is tangentially connected to the first cyclone separator. The oil return pipe is connected to a second branch pipe, and the end of the second branch pipe away from the oil supply pipe is tangentially connected to the second cyclone separator. The top of the first cyclone separator and the second cyclone separator are provided with an overflow port for discharging clean oil, and the bottom is provided with a drain port for collecting heavy pollutants.

[0008] The detection component is used to detect a physical quantity A related to the pollutant concentration at the discharge port of the first cyclone separator and a physical quantity B related to the pollutant concentration at the discharge port of the second cyclone separator, and outputs a differential signal ΔC reflecting the difference between the physical quantities A and B.

[0009] Optionally, the detection component includes a pair of high-frequency ultrasonic transducers arranged side by side on the thin oil station. The high-frequency ultrasonic transducers are configured to emit ultrasonic beams that pass through the pollutant collection areas from the two discharge outlets, respectively. The physical quantities A and B are the signal attenuation of the ultrasonic beams after passing through the corresponding pollutant collection areas.

[0010] Optionally, the oil supply pipe is equipped with a filter screen made of shape memory alloy wire, and the thin oil station is equipped with a current controller electrically connected to the shape memory alloy wire mesh. The current controller is used to adjust the magnitude of the current applied to the shape memory alloy wire mesh.

[0011] Optionally, the current controller can apply a high-frequency pulsed current to cause the shape memory alloy wire to reciprocate and contract, generating micro-mechanical vibration.

[0012] Optionally, the first cyclone separator and the second cyclone separator have the same structure. The first cyclone separator is equipped with a stirring roller that rotates coaxially inside, and the first cyclone separator is equipped with a drive assembly that drives the stirring roller to rotate.

[0013] Optionally, both the first and second cyclone separators are equipped with ultrasonic transducers at their bottoms. The ultrasonic transducers can emit ultrasonic waves to cause the tiny bubbles suspended in the lubricating oil to coalesce into larger bubbles. Both the first and second cyclone separators are equipped with exhaust valves at their top ends.

[0014] Optionally, the ultrasonic waves emitted by the ultrasonic transducer are parallel to the axis of the stirring roller.

[0015] Optionally, the two overflow ports of the first cyclone separator and the second cyclone separator are connected by a three-way pipe, and the end of the three-way pipe that is not connected to the first cyclone separator and the second cyclone separator is connected to the return oil pipe.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] 1. Existing technologies use data from oil testing that is merely a result-based indicator. When this indicator exceeds the limit, the cause is unclear. It could be due to a rapid deterioration of return oil contamination exceeding the filter's capacity, or it could be due to filter failure. This lack of clear cause and effect leads to ambiguity in fault diagnosis, making targeted repairs difficult. This invention, however, designs a symmetrical vortex structure and parallel detection channels. It measures the contaminant concentrations at the input (return oil) and output (supply oil) ends as two independent variables (physical quantities B and A) in real time. Physical quantity B directly reflects the real-time contamination rate of the equipment, becoming a direct characterization of the equipment's wear condition. Physical quantity A reflects the cleanliness of the oil ultimately delivered to the equipment. The differential signal (ΔC = A - ...) B) By using mathematical relationships, the influence of input pollution fluctuations is eliminated, thereby accurately determining the working performance of the filter screen as an independent component. Therefore, this invention no longer measures a vague final result. By measuring the input and output of the system, the transfer function (i.e., filtration efficiency) of the intermediate component (filter) is accurately calculated. Overall, it achieves accurate location of the root cause of the fault and precise judgment on whether the lubricating oil needs to be replaced, which greatly improves the detection accuracy of the testing equipment and reduces the difficulty of the work for the staff.

[0018] 2. In this invention, the filter screen aperture size can be changed according to the structure of lubricating oil detection, thus better adapting to the environment. As a result, the filtration accuracy of the filter screen is dynamically and reversibly improved from the conventional level to the high-precision level, effectively intercepting the surge of contaminants. In addition, when online backflushing or cleaning is required, the current controller can apply a high-frequency pulse current, which causes the shape memory alloy wire to rapidly undergo phase transformation between austenite and martensite, generating high-frequency contraction-relaxation micro-vibrations. This micro-mechanical shaking effect can effectively shake off particles that are stuck deep in the pores, greatly enhancing the cleaning efficiency of backflushing.

[0019] 3. Small air bubbles suspended in lubricating oil reduce the overall rigidity of the oil. This causes the pump in the thin oil station to use some of its energy to compress air bubbles instead of transporting oil, resulting in unstable pressure or even cavitation. This significantly reduces the lubricating effect of the lubricating oil on the equipment. At the same time, air bubbles severely interfere with acoustic and optical sensors, and the spurious signals they generate are mixed with real contaminant signals, greatly reducing the accuracy of the detection components. In this invention, an ultrasonic transducer is used to gather and finally remove air bubbles in the lubricating oil. This not only improves the lubrication effect of the thin oil station on the equipment, but also provides a high-fidelity input signal for subsequent detection components, ensuring the reliability of the diagnostic results. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0021] Figure 2 yes Figure 1 A magnified view of part A in the middle;

[0022] Figure 3 This is a schematic diagram of the monitoring device in the embodiments of this application;

[0023] Figure 4 This is a side view of the monitoring device in an embodiment of this application;

[0024] Figure 5 This is a schematic diagram of the structure of the stirring roller in the embodiments of this application;

[0025] Figure 6 This is a schematic diagram of the filter screen structure in an embodiment of this application;

[0026] In the diagram, 1. Thin oil station; 11. Oil supply pipe; 12. Oil return pipe; 13. Oil pump; 14. Tank; 2. Monitoring device; 21. First cyclone separator; 211. Overflow port; 212. Sewage outlet; 213. Exhaust valve; 22. Second cyclone separator; 23. First branch pipe; 24. Second branch pipe; 25. Stirring roller; 26. Drive assembly; 27. Collection box; 3. Detection assembly; 31. Transmitter; 32. Receiver; 4. Filter screen; 41. Connecting column; 42. Mesh; 5. Current controller; 6. Upper tee pipe; 7. Lower tee pipe; 8. Crossbeam; 81. Second transmitter. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail below.

[0028] A real-time oil quality monitoring device in a thin oil station, referring to Figure 1 and Figure 2 It includes a thin oil station 1 and a monitoring device 2 installed on the thin oil station 1.

[0029] In this embodiment, the bottom of the thin oil station 1 is a box 14. The box 14 is typically divided into an oil supply area, a sedimentation area, and an oil return area. The thin oil station 1 is equipped with an oil supply pipe 11 that supplies lubricating oil to external equipment. One end of the oil supply pipe 11 is connected to the oil supply area inside the box 14, and an oil pump 13 is connected to the oil supply pipe 11. A filter screen 4 is installed inside the oil supply pipe 11, located on the side of the oil pump 13 that is relatively far away from the box 14. The box 14 is also equipped with an oil return pipe 12. One end of the oil return pipe 12 is connected to the oil return area of ​​the box 14, and the other end of the oil return pipe 12 is connected to the oil collection tank on the external equipment. When the thin oil station 1 is started, the oil pump 13 on the thin oil station 1 draws out the lubricating oil in the oil supply area and then... The lubricating oil is supplied to external equipment via oil supply pipe 11. After passing through the external equipment, the lubricating oil lubricates the key components of the equipment. Simultaneously, during its flow through the external equipment, the lubricating oil carries away some impurities, thus cleaning the equipment and providing some cooling. The lubricating oil collects in the collection tank of the equipment and then returns to the return oil zone via oil return pipe 12. The lubricating oil in the return oil zone passes through the sedimentation zone in the tank 14, where metal impurities and moisture settle to the bottom. The settled lubricating oil then flows back to the supply oil zone, continuing the cycle. It should be noted that in practical applications, the thin oil station 1 also includes components such as a cooler. Since the thin oil station 1 is existing technology, it will not be described in detail here.

[0030] Reference Figure 1 and Figure 3 The monitoring device 2 in this embodiment includes a first cyclone separator 21, a second cyclone separator 22, and a detection component 3.

[0031] The first cyclone separator 21 and the second cyclone separator 22 have identical structures. In this embodiment, the upper end of the first cyclone separator 21 is cylindrical, and the lower end is conical. The first cyclone separator 21 and the second cyclone separator 22 are fixedly installed on the side wall of the housing 14, and are arranged side by side. In this embodiment, the oil supply pipe 11 is connected to a first branch pipe 23. The end of the first branch pipe 23 away from the oil supply pipe 11 is tangentially connected to the tank wall of the first cyclone separator 21. The filter screen 4 is located between the first branch pipe 23 and the oil pump 13. A second branch pipe 24 is connected to the return oil pipe 12. The end of the second branch pipe 24 away from the return oil pipe 12 is tangentially connected to the tank wall of the second cyclone separator 22. The top of both the first cyclone separator 21 and the second cyclone separator 22 is provided with an overflow port 211 for discharging clean oil, and the bottom is provided with a drain port 212 for collecting heavy pollutants. An upper T-connector 6 is provided between the two overflow ports 211 and the return oil area of ​​the tank 14. The return oil area is connected to the two overflow ports 211 through the upper T-connector 6. A collection box 27 is also provided on the side wall of the tank 14. The collection box 27 is connected to... A lower T-connector 7 is provided between the two drain outlets 212. Similarly, the collection box 27 is connected to the two drain outlets 212 through the lower T-connector 7. An agitator 25 is coaxially rotatably mounted on the top of the inner part of the first cyclone separator 21. A drive assembly 26 for driving the agitator 25 to rotate around its own axis is provided on the top of the outer part of the first cyclone separator 21. In this embodiment, the drive assembly 26 is a servo motor. It should be noted that in this embodiment, the diameter of the first branch pipe 23 is much smaller than that of the oil supply pipe 11, and the diameter of the second branch pipe 24 is much smaller than that of the return pipe 12. The oil supply pipe 11 is much smaller, so when the oil supply pipe 11 supplies oil to the external equipment, only a small portion of the oil will enter the first cyclone separator 21 through the first branch pipe 23. Similarly, when the oil from the external equipment enters the tank through the return oil pipe 12, only a small portion of the oil will enter the second cyclone separator 22 through the second branch pipe 24. Then, the clean oil separated in the first cyclone separator 21 and the second cyclone separator 22 will also return to the return oil area through the upper tee pipe 6. Therefore, the setting of the first branch pipe 23 and the second branch pipe 24 will not affect the circulation of oil in the entire equipment.

[0032] Reference Figure 1 , Figure 4 and Figure 5In this embodiment, the detection component 3 is also installed on the side wall of the housing 14. The detection component 3 in this embodiment includes two high-frequency ultrasonic transducers arranged side by side on the side wall of the housing 14. The two high-frequency ultrasonic transducers have opposite directions of action. The pipes of the three-way pipe 6 connected to the two drain ports 212 are arranged vertically and perpendicular to the direction of action of the high-frequency ultrasonic transducers in this embodiment. The pipes of the three-way pipe 6 connected to the two drain ports 212 are all located between the two high-frequency ultrasonic transducers. Each high-frequency ultrasonic transducer includes a transmitter 31 and a receiver 32. In this embodiment, the transmitter 31 is selected as MA40S-1R / MA40S-1S. This model of transmitter can emit ultrasonic waves in a directional manner.

[0033] When the thin oil station 1 starts, the drive assembly 26 is activated, driving the stirring roller 25 to rotate. Then, some oil in the oil supply pipe 11 enters through the first branch pipe 23 at a certain flow rate and pressure from the tangential inlet on the side wall of the first cyclone separator 21. Since the inlet is tangential, the oil cannot move in a straight line, and its linear kinetic energy is immediately converted into rotational kinetic energy around the central axis of the tank, thus forming a high-speed, stable outer cyclone that spirals downward along the tank wall inside the tank. Since the oil in this embodiment is lubricating oil, in order to ensure that the lubricating oil can have a certain flow rate, the rotation of the stirring roller 25 accelerates the flow of the lubricating oil. The high-speed rotating oil will generate a strong centrifugal force, the magnitude of which is far greater than that of gravity. According to the centrifugal force formula (F ∝ m·v² / r), it exerts a huge separation effect on the components of different densities inside the oil.

[0034] Although the oil supply is very clean, it may still contain a very small amount of tiny solid particles (such as metal shavings and dust) or free water droplets that are denser than the lubricating oil and have not been intercepted by the main filter screen 4. Under the action of strong centrifugal force, these heavy contaminants will be quickly thrown towards the inner wall of the tank, while the main body of clean oil with a smaller density will be squeezed into the inner layer of the rotating flow. Under the geometric constraints of the tank (especially the lower conical section), the flow field will evolve into a unique inner and outer double swirling flow structure. The heavy contaminants that have been thrown to the tank wall in the outer downward swirling flow will follow the outer swirling flow close to the wall and move downward in a spiral trajectory, converging towards the drain port 212 at the bottom. The inner upward swirling flow forms a low-pressure "vortex core" because the pressure in the central axis area of ​​the tank is the lowest. The clean oil, squeezed into the inner layer, reverses direction due to pressure difference once it reaches the vicinity of the bottom of the tank, forming an inner vortex that spirals upward around the central axis. This inner vortex, carrying all the separated heavy contaminants, converges with the outer downward vortex and is finally discharged from the drain port 212 at the bottom of the tank as a high-concentration jet. The output of this drain port 212 is the target of measurement for the subsequent detection component 3. The inner upward vortex, carrying most of the clean oil, is finally discharged from the overflow port 211 at the top of the tank and flows back to the oil tank of the thin oil station 1 through the three-way pipe 6.

[0035] When the thin oil station 1 is started, the detection component 3 is also already in the start-up state. At this time, the two high-frequency ultrasonic transducers are constantly emitting sound waves. The transmitters 31 in these two high-frequency ultrasonic transducers will synchronously and continuously emit high-frequency ultrasonic beams with the same frequency and initial energy intensity. One ultrasonic beam is precisely guided and prepared to pass through the pollutant collection area (i.e., the three-way pipe 6) flowing out of the drain port 212 of the first cyclone separator 21, while the other beam is simultaneously guided to the corresponding area of ​​the second cyclone separator 22 (the other pipe of the three-way pipe 6). When the ultrasonic beam passes through the enriched, high-concentration pollutant oil flow from the drain port 212, its energy will be significantly attenuated due to two main physical effects. One is scattering, which is the most important attenuation mechanism. Solid particles (metal shavings, dust, etc.) in the oil flow act as acoustic obstacles relative to the lubricating oil. When ultrasound encounters these particles, the sound wave energy is scattered in all directions, resulting in a significant reduction in the energy that can ultimately propagate in a straight line to the receiving end. The more particles and the larger their size, the more intense the scattering of sound waves. Secondly, there is absorption. The molecules of the oil itself and the contaminant particles will produce a viscous effect and heat conduction under the vibration of ultrasound, converting some of the sound energy into internal energy (heat energy), thus causing the loss of sound wave energy. Therefore, it can be concluded that there is a clear positive correlation between the concentration of contaminants and the attenuation of ultrasound. That is, the dirtier the oil flow from the drain outlet 212 and the higher the concentration of contaminants, the greater the energy loss of ultrasound after passing through it.

[0036] After the receiver 32 of the high-frequency ultrasonic transducer receives the remaining ultrasonic energy intensity after penetrating the oil flow, the signal processor inside the component calculates the signal attenuation of each channel in real time. The signal attenuation of the oil flow passing through the first cyclone tank drain port 212 is defined as A, and the signal attenuation of the oil flow passing through the second cyclone tank drain port 212 is defined as B. Then, A and B are transmitted to the equipment's control center (in this embodiment, the control center is a PLC), where a standard value is preset. , The signal attenuation of the oil flow at the drain port 212 of the first cyclone tank is assuming no damage to the filter screen 4, while the deviation amplitude M is... ×100%, As filter 4 wears down with use, its filtration efficiency will inevitably decrease, therefore the value of A will definitely increase, and thus the deviation range M will also increase. A preset value can be selected. When M exceeds If the value of A is too high, it means that the wear of filter screen 4 is relatively high and needs to be replaced in time.

[0037] After determining whether filter 4 is damaged through calculation, there are two possibilities. First, filter 4 is not damaged. In this case, the difference signal ΔC = B - A can be calculated. Since A is the content of contaminants in the oil before entering the external equipment, and B is the content of contaminants in the oil after exiting the external equipment, ΔC refers to the content of contaminants carried out by the oil from the external equipment. The contaminants generated in the external equipment are mainly metal shavings produced by the wear between the parts of the equipment. Therefore, ΔC can represent the wear condition of the external equipment. Similarly, a preset value can be set in the control center. Deviation range for It can The value of ΔC is set to the minimum value from previous measurements, therefore, under normal circumstances, the wear and tear on external equipment will only worsen. It must be a positive value or zero, and a preset value is also set. ,when Not exceeding This indicates that the wear and tear of the external equipment is in good condition, while when Exceed If the external equipment is damaged, it indicates severe wear and tear, requiring immediate shutdown and repair. Secondly, if filter 4 is damaged, assuming the external equipment is functioning normally, the amount of contaminants produced by the external equipment will not change significantly; therefore, the value of ΔC will remain within the normal range. This will also be within the normal range. However, if the external equipment is in a state of high wear and tear, the value of B will increase sharply, and the value of ΔC will also increase. Therefore... It will also rise, when Exceed If this occurs, it indicates that the external equipment is in a state of high wear and tear, and therefore it is also necessary to stop the machine for maintenance immediately.

[0038] In summary, as long as the control center detects that M is greater than... In this way, it can be determined whether filter screen 4 is damaged, and the control center can immediately issue an alarm to remind staff to replace filter screen 4 or replace oil supply line 11 in time. In addition, this method can measure the value of M in a timely manner. When the value of M is very close to When the filter 4 is about to fail, the control center can issue a warning alarm, informing staff that the filter 4 is about to fail and reminding them to replace the filter 4 or the oil supply line 11 in time. Compared with the existing technology that determines whether the filter 4 is faulty by testing the pressure on both sides of the filter 4, the method in this embodiment can predict the service life of the filter 4 through a function curve, and can replace it in time before the filter 4 fails, rather than replacing it after the filter 4 fails. Therefore, this embodiment has the advantage of being proactive; in addition, in this embodiment... It can accurately determine the wear and tear of external equipment. Whether or not the filter 4 is damaged, it will not affect the detection results of the detection component for the wear and tear of external equipment in this embodiment. That is, as long as the control center detects... Greater than If this is detected, it can be determined that the external equipment is severely worn and needs to be stopped immediately for repair.

[0039] In summary, by calculating data A and B in this embodiment, the problem in the entire oil supply device and the target equipment can be clearly identified. Compared to existing technologies that directly measure lubricating oil data using particle sensors, temperature sensors, etc., the method in this embodiment can more accurately pinpoint the cause of the problem, enabling personnel to perform accurate and rapid repairs. In addition, in existing technologies, sensor components usually come into direct contact with lubricating oil, and dirt in the lubricating oil is very likely to come into contact with the sensor components, leading to damage. However, in this embodiment, the various sensor components do not come into direct contact with lubricating oil, greatly improving the protection of the sensor components.

[0040] Reference Figure 1 and Figure 6In this embodiment, the filter screen 4 is mainly made of connecting post 41 and shape memory alloy wire (such as nickel-titanium alloy wire). The mesh 42 composed of shape memory alloy wire is fixedly installed on the inner wall of the connecting post. The shape memory alloy wire mesh 42 is fixed on the inner wall of the connecting post when it is in a low temperature, soft, and elongated martensitic state. At this time, the shape memory alloy wire is not completely straightened. In this embodiment, the connection between the connecting post and the oil supply pipe 11 can be through flange connection or welding. The two ends of the shape memory alloy wire are led out through insulating terminals as electrodes. The thin oil station 1 is also equipped with a current controller 5 that is electrically connected to the electrode on the shape memory alloy wire. The current controller 5 is also electrically connected to the control center.

[0041] Under normal operating conditions, the current controller 5 does not energize the shape memory alloy wire, or only provides a very small holding current. The shape memory alloy wire is in a low-temperature, soft, and elongated martensitic state. At this time, the shape memory alloy wire is in a relaxed state. When oil flows through, the shape memory alloy wire will undergo a certain deformation, thus the pores between the shape memory alloy wires can be enlarged. The system operates in a low-precision, low-flow-resistance energy-saving mode. When the detection component 3 detects abnormal wear of the target equipment (a sharp increase in return oil contamination), the current controller 5 will immediately increase the current to the shape memory alloy wire. The Joule heating generated by the electric current causes the shape memory alloy wire to rapidly exceed its phase transition temperature (e.g., 70°C). The wire undergoes a phase transition, transforming into a high-temperature, rigid austenitic state and instantly shrinking to its preset "memory shape" (e.g., shrinking 1%-8% of its length). This overall shrinkage of the shape memory alloy wire network keeps the wires in a taut state, making it difficult for the pores between the filter screens 4 to expand. The pores of the filter screens 4 remain relatively small, thus dynamically and reversibly adjusting the filter's filtration accuracy from normal. The precision level has been upgraded to a high level, effectively intercepting surges in pollutants. Furthermore, when online backwashing or cleaning is required, the current controller 5 can apply a high-frequency pulsed current (high-frequency, high-duty-cycle pulsed square wave current). This causes the shape memory alloy wire to rapidly undergo phase transformation between austenite and martensite, generating high-frequency contraction-diffusivity micro-vibrations. This "micro-mechanical shaking" effect effectively shakes off particles adhering to the filter screen 4, greatly enhancing the cleaning efficiency of backwashing. Simultaneously, for particles stuck in the mesh of the filter screen 4, these particles... Particles often have some sharp points stuck in the pores. Since the pores of the filter screen 4 are in a state of contraction and expansion, the filter screen 4 will exert radial squeezing or shearing forces (perpendicular to the direction of particle movement) on the sharp points of these particles. Frequent squeezing or shearing forces can break these particles, causing them to break into smaller particles. Then, due to the vibration of the filter screen 4, these smaller particles can be removed from the filter screen 4. Overall, the high-frequency vibration can remove dirt from the filter screen 4, realizing the self-cleaning function of the filter screen 4.

[0042] Compared to traditional filters, the filtration accuracy of this invention is variable and controllable. It can achieve multiple filtration modes on a single component. The system can command the current controller 5 to increase the current based on the diagnostic results, instantly improving the protection level and achieving active protection. This "intelligent response" capability is not available in any existing fixed filter. It enables the system to minimize flow resistance and energy consumption during daily operation while ensuring safety.

[0043] Reference Figure 4 and Figure 5In this embodiment, a crossbeam 8 is provided on the bottom inner wall of both the first cyclone separator 21 and the second cyclone separator 22. A second transmitter 81 is provided on the crossbeam. The second transmitter 81, like the transmitter 31 mentioned above, can generate ultrasonic waves. The direction of the ultrasonic waves emitted by the second transmitter 81 is parallel to the axis of the stirring roller 25. In this embodiment, the second transmitter 81 is preferably an immersion ultrasonic transducer from Branson Ultrasonics. This type of device can emit wide-angle ultrasonic waves, and the emitted ultrasonic waves have strong penetrability. Therefore, the blocking effect of metal impurities in the oil on the ultrasonic waves can be ignored.

[0044] Bubbles in oil not only reduce lubrication performance and cause cavitation, but also severely interfere with the accuracy of acoustic or optical sensors. This invention utilizes the low-pressure vortex generated by the swirling separation itself to initially gather bubbles, while the ultrasonic transducer vibrates at high frequency, emitting continuous sound waves into the oil. These sound waves are reflected back after encountering a reflective surface (such as the tank wall), interfering with subsequently emitted sound waves. Under specific frequency and geometric conditions, a stable standing wave field is formed, resulting in regions of violent pressure fluctuations (pressure antinodes) and regions of relatively stable, essentially unchanged pressure (pressure nodes) within the tank. Sound waves are pressure waves, carrying energy and momentum, and therefore can exert a small, continuous force on objects in the medium. This is the acoustic radiation force, which is particularly significant for compressible objects like bubbles. In a standing wave field, bubbles are subjected to a force known as the "primary Bjerknes force." This force pushes the bubbles from regions of violent pressure fluctuations (pressure antinodes) to regions of stable pressure (pressure nodes). Therefore, under the influence of the sound field, all the diffusely distributed microbubbles of varying sizes in the oil are involuntarily moved towards the nearest pressure node, as if gripped by invisible tweezers. These pressure nodes act like pre-set "gathering points." Countless microbubbles are forced to gather in these narrow regions, greatly reducing the distance between them. When the bubbles are "fixed" at pressure nodes by the sound field, they also generate a "secondary Bjerknes force" that attracts each other. The high-density aggregation also greatly increases the probability of their collision and merging. Ultimately, countless microbubbles rapidly coalesce into large, visible bubbles. Once a large bubble forms, its buoyancy increases dramatically, enough to overcome the binding force of the sound field, allowing it to quickly rise and detach from the main body of the oil, finally being discharged from the vent valve 213 on the tank.

[0045] Compared to traditional methods that rely on large-capacity oil tanks for gravity settling and degassing, the online degassing device of this invention is highly efficient and compact. Compared to complex vacuum degassing systems, this invention is simple in structure, low in cost, and easy to integrate. By actively removing air bubbles, which are "interference sources" and "harmful media," from the lubricating oil before it passes through the detection component 3 and enters the target equipment, it not only provides a purer analytical sample for the detection component 3, ensuring the reliability of the diagnostic results, but also fundamentally improves the quality of the lubricating oil ultimately delivered to the equipment.

[0046] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A real-time oil quality monitoring device for a thin oil station, characterized in that, include: A thin oil station (1) is provided with an oil supply pipe (11) and an oil return pipe (12). The first cyclone separator (21) and the second cyclone separator (22) are installed on the thin oil station (1). The oil supply pipe (11) is connected to the first branch pipe (23). The end of the first branch pipe (23) away from the oil supply pipe (11) is tangentially connected to the first cyclone separator (21). The return oil pipe (12) is connected to the second branch pipe (24). The end of the second branch pipe (24) away from the oil supply pipe (11) is tangentially connected to the second cyclone separator (22). The top of the first cyclone separator (21) and the second cyclone separator (22) are both provided with an overflow port (211) for discharging clean oil and a drain port (212) for collecting heavy pollutants at the bottom. The detection component (3) is used to detect the physical quantity A related to the pollutant concentration at the drain outlet (212) of the first cyclone separator (21) and the physical quantity B related to the pollutant concentration at the drain outlet (212) of the second cyclone separator (22), and outputs a differential signal ΔC reflecting the difference between the physical quantities A and B.

2. The real-time oil monitoring device in a thin oil station according to claim 1, characterized in that, The detection component (3) includes a pair of high-frequency ultrasonic transducers arranged side by side on the thin oil station (1). The high-frequency ultrasonic transducers are configured to emit ultrasonic beams that pass through the pollutant collection areas from the two sewage outlets (212), respectively. The physical quantities A and B are the signal attenuation of the ultrasonic beams after passing through the corresponding pollutant collection areas.

3. The real-time oil monitoring device in a thin oil station according to claim 2, characterized in that, The oil supply pipe (11) is equipped with a filter screen (4) made of shape memory alloy wire, and the thin oil station (1) is equipped with a current controller (5) electrically connected to the shape memory alloy wire mesh. The current controller (5) is used to adjust the magnitude of the current applied to the shape memory alloy wire mesh.

4. The real-time oil monitoring device in a thin oil station according to claim 3, characterized in that, The current controller (5) can apply a high-frequency pulse current to cause the shape memory alloy wire to reciprocate and contract, generating micro-mechanical vibration.

5. The real-time oil monitoring device in a thin oil station according to claim 1, characterized in that, The first cyclone separator (21) and the second cyclone separator (22) have the same structure. The first cyclone separator (21) is equipped with a stirring roller (25) that rotates coaxially inside. The first cyclone separator (21) is equipped with a drive assembly (26) that drives the stirring roller (25) to rotate.

6. The real-time oil monitoring device in a thin oil station according to claim 5, characterized in that, Both the first cyclone separator (21) and the second cyclone separator (22) are equipped with ultrasonic transducers at their bottoms. The ultrasonic transducers can emit ultrasonic waves to cause the tiny bubbles suspended in the lubricating oil to coalesce into large bubbles. Both the first cyclone separator (21) and the second cyclone separator (22) are equipped with exhaust valves (213) at their top ends.

7. The real-time oil monitoring device in a thin oil station according to claim 6, characterized in that, The ultrasonic waves emitted by the ultrasonic transducer are parallel to the axis of the stirring roller (25).

8. The real-time oil monitoring device in a thin oil station according to claim 1, characterized in that, The two overflow ports (211) of the first cyclone separator (21) and the second cyclone separator (22) are connected by a three-way pipe (6). The end of the three-way pipe (6) that is not connected to the first cyclone separator (21) and the second cyclone separator (22) is connected to the return oil pipe (12).

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