Oil online monitoring control method, device and system

Abstract

The invention discloses an oil online monitoring control method, device and system, and belongs to the technical field of detection equipment.The oil online monitoring control device comprises an oil pipeline, the oil pipeline is connected with an outer cylinder through a liquid inlet pipe, an inner cylinder is coaxially arranged in the outer cylinder, two baffles are arranged in a gap between the outer cylinder and the inner cylinder, and the two baffles are arranged in the gap between the outer cylinder and the inner cylinder; an isolation insertion block is further mounted on the outer surface of the inner cylinder, and a filter screen and an isolation plate are inserted into the isolation insertion block from top to bottom; an electromagnet is coaxially arranged in the inner cylinder; the outer cylinder, the inner cylinder and the two baffles form a first cavity, and the outer cylinder, the inner cylinder, the isolation plate and the baffles form a second cavity and a third cavity. By controlling the motor, the output shaft of the motor can be driven to periodically rotate clockwise and anticlockwise, so that the baffle moves, relatively continuous detection is realized in the second cavity, the operation is simple, and oil is controlled to flow back into the oil pipeline through the liquid outlet pipe after detection.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and in particular to an oil online monitoring and control method, device and system. Background Art

[0002] Lubricating oil is often used in industrial equipment to provide lubrication for bearings and other structures in the equipment. However, as the use time increases, the equipment often wears out. Therefore, a method of detecting metal abrasive particles in the oil has been developed to estimate the degree of wear. In the early days, it was often detected by iron spectrum detection, but it was more troublesome. Later, optical methods, wear particle sensors, detection methods based on convolutional neural networks, inductance methods, etc. appeared. These methods each have their own advantages and disadvantages.

[0003] Authorization announcement number: CN113640353B discloses a detection method for online monitoring of the abrasive content of oil. A magnet is used to absorb the abrasive in the oil so that the metal abrasive can be absorbed on a cylindrical electrode, causing a change in the capacitance between the two electrodes. The concentration of the metal abrasive in the oil is estimated based on the capacitance data. However, the method has the following disadvantages: it lacks the ability to remove the abrasive in the oil in a timely manner, and the channel needs to be closed before using the magnet for absorption, and then opened for the next detection after the detection, which is inconvenient to operate.

[0004] Authorization announcement number: CN114755396B discloses an oil online monitoring system, which uses a particle counting sensor to detect the concentration of metal abrasive particles in the oil and can remove the metal abrasive particles in time. However, the particle counting sensor requires frequent maintenance, which is inconvenient.

[0005] Therefore, we propose an oil online monitoring and control method, device and system to solve the above problems.

[0006] The above information disclosed in this background technology is only used to increase the understanding of the background technology of the present invention and therefore, it may include information that does not constitute the prior art known to ordinary technicians in this field. Summary of the invention

[0007] The purpose of the present invention is to provide an oil online monitoring and control method, device and system to solve the current market problems raised by the above background technology.

[0008] To achieve the above-mentioned object, the present invention provides an oil online monitoring device, comprising an oil pipeline, wherein the oil pipeline is connected to an outer cylinder through a liquid inlet pipe, an inner cylinder is coaxially arranged inside the outer cylinder, two baffles are arranged in the gap between the outer cylinder and the inner cylinder, an isolation plug is also installed on the outer surface of the inner cylinder, and a filter screen and an isolation plate are plugged into the isolation plug from top to bottom;

[0009] An electromagnet is coaxially arranged inside the inner cylinder;

[0010] The outer cylinder, the inner cylinder and the two baffles form a first cavity, and the outer cylinder, the inner cylinder, the isolation plate and the baffles form a second cavity and a third cavity;

[0011] The inner cylinder and the outer cylinder are respectively provided with a first electrode and a second electrode located in the second cavity, and a third electrode and a fourth electrode located in the third cavity;

[0012] Sealing discs coaxial with the inner cylinder are also fixed at both ends of the two baffles;

[0013] Both ends of the inner cylinder are provided with fixed shafts, and the fixed shafts are provided with bases;

[0014] The oil pipeline is also provided with a liquid outlet pipe.

[0015] Preferably, the inner surface of the inner cylinder is further provided with a semicircular groove, and an isolation sleeve is provided in the groove;

[0016] The groove and the first cavity are located on the same side.

[0017] Preferably, it also includes a motor, which is fixed on the base;

[0018] The sealing disk is fixedly mounted with a hollow first gear, and the first gear is sleeved on the fixed shaft;

[0019] The output shaft of the motor is provided with a second gear, and the first gear and the second gear are meshed with each other.

[0020] Preferably, the outer cylinder comprises an outer shell, and the outer shell is provided with a liquid inlet and a liquid outlet;

[0021] The liquid inlet pipe is connected to the liquid inlet;

[0022] The liquid outlet pipe is connected to the liquid outlet.

[0023] Preferably, a control valve is also provided on the liquid inlet pipe.

[0024] Preferably, the filter screen and the isolation plate are slidably matched, and the isolation plate and the outer ring of the filter screen are sealed with each other;

[0025] The outer ring of the filter screen and the isolation plate are slidably matched with the outer shell and are sealed with each other.

[0026] An oil online monitoring system includes an oil online monitoring device, a measurement and control circuit, a quality detection module and an analysis and processing module;

[0027] The measurement and control circuit is electrically connected to the first electrode, the second electrode, the third electrode and the fourth electrode;

[0028] The quality detection module detects the quality of the abrasive particles remaining on the filter screen;

[0029] The analysis and processing module processes the oil detection data in the second cavity and the third cavity, as well as the data of the quality detection module.

[0030] Preferably, the quality detection module is a quartz crystal sensor, and is electrically connected to the analysis and processing module.

[0031] An oil online monitoring control method is applied to an oil online monitoring system, and the steps include:

[0032] S1, control the motor to drive the baffle to rotate 90 degrees clockwise, and the oil enters the second cavity through the liquid inlet pipe until the second cavity is filled with oil;

[0033] S2, control the motor to drive the baffle to reset, the measurement and control circuit controls the first electrode and the second electrode to be energized, measure the capacitance, recorded as C1, and calculate the concentration data in the oil based on this;

[0034] S3, partially pull out the isolation plate until the oil completely flows into the third cavity and the abrasive particles fall onto the filter screen;

[0035] S4, the measurement and control circuit controls the third electrode and the fourth electrode to be energized, measures the capacitance, recorded as C2, and calculates the concentration data in the oil based on this;

[0036] S5, detecting the mass of the abrasive particles on the filter screen by means of a quality detection module, and calculating the concentration of the abrasive particles in the oil according to the mass data combined with the volume of the second cavity in step S1;

[0037] S6. The analysis and processing module compares the concentration data obtained in step S2 with the concentration data obtained in S5, and calculates an average value after eliminating errors based on the concentration data obtained in S4.

[0038] Preferably, in step S3, it includes:

[0039] S31, control the electromagnet to cut off power;

[0040] S32, extract a part of the isolation plate, wait for the oil to flow into the third cavity, and then reset the isolation plate;

[0041] S33, controlling the motor to drive the baffle to rotate counterclockwise to scrape off the abrasive particles on the inner wall of the second cavity.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] (1) The present invention can drive the output shaft of the motor to rotate periodically clockwise and counterclockwise by controlling the motor, so that the baffle moves, thereby achieving relatively continuous detection in the second cavity. The operation is simple, and after the detection, the oil is controlled to flow back into the oil pipeline through the outlet pipe.

[0044] (2) The present invention provides multiple usage states by controlling the angle of the baffle: that is, when the oil flows out directly through the first cavity, it is in an undetected state; when the oil is detected through the second cavity, the abrasive concentration is detected by the change in capacitance; when the oil is detected through the second cavity and the third cavity respectively, and when the quality of the abrasive filter residue is detected through the quality detection module, the detection accuracy can be improved, and the detection in the third cavity is used as compensation to reduce the error between the detection in the second cavity and the detection through quality detection.

[0045] (3) The present invention can achieve timely removal of metal abrasive particles by setting up a filter screen and an isolation plate. The filter screen and the isolation plate can also be driven by external equipment to improve the degree of automation. In conjunction with the periodic reciprocating rotation of the motor, the abrasive particles can also be continuously filtered to maintain the abrasive particle concentration in the oil within an acceptable range.

[0046] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0048] Figure 2 for Figure 1 Schematic diagram of the structure after the base is hidden;

[0049] Figure 3 It is a schematic diagram of the internal structure of the outer cylinder of the present invention;

[0050] Figure 4 It is a partial enlarged view of the filter screen and the isolation plate of the present invention;

[0051] Figure 5 It is a system schematic diagram of the present invention;

[0052] Figure 6 It is a schematic diagram of the process of the present invention;

[0053] Figure 7 It is a schematic flow chart of step S3 of the present invention.

[0054] In the figure: 1, oil pipeline; 2, liquid inlet pipe; 3, base; 4, outer cylinder; 5, sealing disk; 6, baffle; 7, motor; 8, inner cylinder; 9, electromagnet; 10, isolation plug; 11, first electrode; 12, second electrode; 13, third electrode; 14, fourth electrode; 15, groove; 16, isolation sleeve; 17, filter screen; 18, isolation plate; 19, fixed shaft; 20, first gear; 21, second gear; 22, liquid outlet pipe; 23, control valve; 24, measurement and control circuit; 25, quality detection module; 26, analysis and processing module;

[0055] 401, outer shell; 402, liquid inlet; 403, liquid outlet; 404, first cavity; 405, second cavity; 406, third cavity. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. It should be pointed out that the drawings are schematic and not drawn to scale. For the sake of clarity and convenience in the figures, the relative sizes and proportions of the parts shown in the figures are exaggerated or reduced in size, and any size is only exemplary and not restrictive.

[0057] Embodiment 1:

[0058] See also Figure 1-Figure 4 , an oil online monitoring device, comprising: an oil pipeline 1, the oil pipeline 1 is connected to an outer cylinder 4 through a liquid inlet pipe 2, an inner cylinder 8 is coaxially arranged in the outer cylinder 4, two baffles 6 are arranged in the gap between the outer cylinder 4 and the inner cylinder 8, an isolation plug 10 is also installed on the outer surface of the inner cylinder 8, a filter screen 17 and an isolation plate 18 are plugged into the isolation plug 10 from top to bottom, an electromagnet 9 is coaxially arranged inside the inner cylinder 8, the outer cylinder 4, the inner cylinder 8 and the two baffles 6 form a first cavity 404, the outer cylinder 4, the inner cylinder 8, the isolation plate 18 and the baffle 6 form a second cavity 405 and a third cavity 406, the inner cylinder 8 and the outer cylinder 4 are respectively provided with There are a first electrode 11 and a second electrode 12 located in the second cavity 405, and a third electrode 13 and a fourth electrode 14 located in the third cavity 406. Sealing disks 5 coaxial with the inner tube 8 are fixed at both ends of the two baffles 6. Fixed shafts 19 are provided at both ends of the inner tube 8. The fixed shaft 19 is provided with a base 3. A liquid outlet pipe 22 is provided on the oil pipeline 1, and a control valve 23 is provided on the liquid inlet pipe 2. The filter 17 and the isolation plate 18 are slidably matched, and the isolation plate 18 and the outer ring of the filter 17 are sealed to each other; the outer ring of the filter 17 and the isolation plate 18 are slidably matched with the outer shell 401 and are sealed to each other.

[0059] By adopting the above technical scheme, when the oil fills the second cavity, the abrasive particles in the oil can be adsorbed through the cooperation of the electromagnet 9, the first electrode 11, and the second electrode 12, and the concentration of the abrasive particles in the oil can be calculated by the change of capacitance. After the detection, the electromagnet 9 is controlled to stop working, and a part of the isolation plate 18 is pulled out, so that the oil can fall into the third cavity 406 and then leave through the liquid outlet pipe 22. Through the scraping action of the baffle, the abrasive particles can fully fall onto the filter 17, and the filter 17 can be cleaned.

[0060] It should be pointed out that the filter screen 17 and the isolation plate 18 can be driven to move linearly by an external linear drive device. In this state, continuous filtration of the oil can be achieved, wherein: the liquid inlet pipe 2, the liquid outlet pipe 22 and the first cavity 404 are connected, and the baffle 6 has a counterclockwise angle compared to the initial state, so that the liquid inlet pipe 2 is directly connected to the second cavity 405, and the isolation plate 18 is in a partially withdrawn state. The control valve 23 is used to control the intermittent entry of the oil into the liquid inlet pipe 2, so as to control continuous filtration.

[0061] A semicircular groove 15 is further formed on the inner surface of the inner cylinder 8 , and an isolation sleeve 16 is disposed in the groove 15 . The groove 15 and the first cavity 404 are located on the same side.

[0062] It also includes a motor 7 fixed on the base 3. The sealing disk 5 is fixedly installed with a hollow first gear 20, and the first gear 20 is sleeved on the fixed shaft 19; the output shaft of the motor 7 is provided with a second gear 21, and the first gear 20 and the second gear 21 are meshed with each other.

[0063] The outer cylinder 4 comprises an outer shell 401 , on which a liquid inlet 402 and a liquid outlet 403 are provided. The liquid inlet pipe 2 is connected to the liquid inlet 402 , and the liquid outlet pipe 22 is connected to the liquid outlet 403 .

[0064] It should be pointed out that: a one-way valve is provided at the connection point between the liquid outlet pipe 22 and the oil pipeline 1, and the control oil can enter the oil pipeline 1 through the one-way valve, but will not flow back through the oil pipeline 1 into the liquid outlet pipe 22. Since this method is more common in the prior art, it is not shown in the figure.

[0065] like Figure 4 As shown, the filter sheet of the filter screen 17 is located inside the outer shell 401 and is slightly concave compared to the outer ring surface of the filter screen 17, so that the outer ring surface can be stuck on the outer shell 401 to maintain a sealed state. Figure 4 It also shows the state in which the filter screen and the isolation plate 18 are in close contact. After the oil enters the third cavity 406, the isolation plate 18 is inserted tightly. At this time, the oil in the second cavity 405 has been discharged, so the filter screen 17 can be removed without worrying about the problem of oil leakage.

[0066] Embodiment 2:

[0067] See also Figure 5 , an oil online detection system, including the above-mentioned oil online monitoring device, as well as a measurement and control circuit 24, a quality detection module 25 and an analysis and processing module 26, the measurement and control circuit 24 is electrically connected to the first electrode 11, the second electrode 12, the third electrode 13 and the fourth electrode 14, the quality detection module 25 detects the mass of abrasive particles remaining on the filter 17, and the analysis and processing module 26 processes the oil detection data in the second cavity 405 and the third cavity 406, as well as the data of the quality detection module 25.

[0068] The quality detection module 25 is a quartz crystal sensor and is electrically connected to the analysis and processing module 26 .

[0069] Through the above technical solution, two methods of abrasive concentration detection are provided and compared, and the data measured in the third cavity 406 can be used as error compensation for quality detection to correct possible errors in the measured values ​​of the quality detection method. The corrected data can be compared with the measured values ​​in the second cavity 405, and the average value can be calculated to reduce the error of a single measurement.

[0070] Among them, the sources of errors in the detection process include: first, when detecting in the second cavity 405, the abrasive particles in the oil may not be completely adsorbed, causing measurement errors; second, during filtration, some smaller abrasive particles may pass through the filter 17, causing measurement errors.

[0071] Embodiment 3:

[0072] See also Figure 6 , an oil online monitoring control method, applied to the above oil online monitoring system, the steps include:

[0073] S1, control the motor 7 to drive the baffle 6 to rotate 90 degrees clockwise, and the oil enters the second cavity 405 through the liquid inlet pipe 2 until the second cavity 405 is filled with oil;

[0074] S2, control the motor 7 to drive the baffle 6 to reset, the measurement and control circuit 24 controls the first electrode 11 and the second electrode 12 to be energized, measure the capacitance, recorded as C1, and calculate the concentration data in the oil based on the capacitance;

[0075] S3, partially withdraw the isolation plate 18 until the oil completely flows into the third cavity 406 and the abrasive particles fall onto the filter screen 17;

[0076] S4, the measurement and control circuit 24 controls the third electrode 13 and the fourth electrode 14 to be energized, measures the capacitance, recorded as C2, and calculates the concentration data in the oil based on the capacitance;

[0077] S5, detecting the mass of the abrasive particles on the filter screen 17 through the mass detection module 25, and calculating the concentration of the abrasive particles in the oil according to the mass data combined with the volume of the second cavity 405 in step S1;

[0078] S6. The analysis and processing module 26 compares the concentration data obtained in step S2 with the concentration data obtained in step S5, and calculates an average value after eliminating errors based on the concentration data obtained in step S4.

[0079] In step S3, it includes:

[0080] S31, control the electromagnet 9 to cut off the power;

[0081] S32, withdraw a portion of the isolation plate 18, wait for the oil to flow into the third cavity 406, and then reset the isolation plate 18;

[0082] S33 , controlling the motor 7 to drive the baffle 6 to rotate counterclockwise to scrape off the abrasive particles on the inner wall of the second cavity 405 .

[0083] Working principle: In the initial state, the two baffles 6 are in a vertical state. When performing detection, the baffle 6 is controlled to rotate counterclockwise so that the oil fills the second cavity 405, and the obtained volume is a certain value. The volume of the oil entering is controlled by the control valve 23, and then the baffle 6 is reset. The abrasive concentration data is detected by the cooperation of the first electrode 11 and the second electrode 12, and then the isolation plate 18 is slightly pulled out to allow the oil to enter the third cavity 406. The oil is filtered. After it completely enters, the isolation plate 18 can be tightened. At this time, the filter screen 17 can be pulled out to perform quality inspection on the abrasive on the filter screen 17.

[0084] The standard parts used in the present invention can all be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0085] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0086] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0087] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0088] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0089] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0090] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An oil online monitoring device, comprising an oil pipeline (1), wherein the oil pipeline (1) is connected to an outer cylinder (4) via a liquid inlet pipe (2), characterized in that: An inner cylinder (8) is coaxially arranged inside the outer cylinder (4), two baffles (6) are arranged in the gap between the outer cylinder (4) and the inner cylinder (8), an isolation plug (10) is also installed on the outer surface of the inner cylinder (8), and a filter screen (17) and an isolation plate (18) are plugged into the isolation plug (10) from top to bottom; An electromagnet (9) is coaxially arranged inside the inner cylinder (8); The outer cylinder (4), the inner cylinder (8) and the two baffles (6) form a first cavity (404); the outer cylinder (4), the inner cylinder (8), the isolation plate (18) and the baffles (6) form a second cavity (405) and a third cavity (406); The inner cylinder (8) and the outer cylinder (4) are respectively provided with a first electrode (11) and a second electrode (12) located in the second cavity (405), and a third electrode (13) and a fourth electrode (14) located in the third cavity (406); Sealing discs (5) coaxial with the inner cylinder (8) are fixed at both ends of the two baffles (6); Both ends of the inner cylinder (8) are provided with fixed shafts (19), and the fixed shaft (19) is provided with a base (3); The oil pipeline (1) is also provided with a liquid outlet pipe (22).

2. The oil online monitoring device according to claim 1, characterized in that: The inner surface of the inner cylinder (8) is also provided with a semicircular groove (15), and an isolation sleeve (16) is provided in the groove (15); The groove (15) and the first cavity (404) are located on the same side.

3. The oil online monitoring device according to claim 1, characterized in that: It also includes a motor (7) fixed on the base (3); The sealing disc (5) is fixedly mounted with a hollow first gear (20), and the first gear (20) is sleeved on the fixed shaft (19); The output shaft of the motor (7) is provided with a second gear (21), and the first gear (20) and the second gear (21) are meshed with each other.

4. The oil online monitoring device according to claim 1, characterized in that: The outer cylinder (4) comprises an outer shell (401), and the outer shell (401) is provided with a liquid inlet (402) and a liquid outlet (403); The liquid inlet pipe (2) is connected to the liquid inlet (402); The liquid outlet pipe (22) is connected to the liquid outlet (403).

5. The oil online monitoring device according to claim 1, characterized in that: The liquid inlet pipe (2) is also provided with a control valve (23).

6. The oil online monitoring device according to claim 5, characterized in that: The filter screen (17) and the isolation plate (18) are slidably matched, and the isolation plate (18) and the outer ring of the filter screen (17) are sealed to each other; The outer ring of the filter screen (17) and the isolation plate (18) are slidably matched with the outer shell (401) and are sealed with each other.

7. An oil online monitoring system, characterized in that: It comprises an oil online monitoring device as claimed in claim 6, as well as a measurement and control circuit (24), a quality detection module (25) and an analysis and processing module (26); The measurement and control circuit (24) is electrically connected to the first electrode (11), the second electrode (12), the third electrode (13) and the fourth electrode (14); The quality detection module (25) detects the quality of the abrasive particles remaining on the filter screen (17); The analysis and processing module (26) processes the oil detection data in the second cavity (405) and the third cavity (406), as well as the data of the quality detection module (25).

8. The oil online monitoring system according to claim 7, characterized in that: The quality detection module (25) is a quartz crystal sensor and is electrically connected to the analysis and processing module (26).

9. An oil online monitoring and control method, characterized in that: The oil online detection system according to claim 8 comprises the following steps: S1, controlling the motor (7) to drive the baffle (6) to rotate ninety degrees clockwise, and the oil enters the second cavity (405) through the liquid inlet pipe (2) until the second cavity (405) is filled with oil; S2, controlling the motor (7) to drive the baffle (6) to reset, and the measurement and control circuit (24) to control the first electrode (11) and the second electrode (12) to be energized, measuring the capacitance, recorded as C1, and calculating the concentration data in the oil based on the capacitance; S3, partially pulling out the isolation plate (18) until the oil completely flows into the third cavity (406) and the abrasive particles fall onto the filter screen (17); S4, the measurement and control circuit (24) controls the third electrode (13) and the fourth electrode (14) to be energized, measures the capacitance, recorded as C2, and calculates the concentration data in the oil based on the capacitance; S5, detecting the mass of the abrasive particles on the filter screen (17) by means of the mass detection module (25), and calculating the concentration of the abrasive particles in the oil according to the mass data combined with the volume of the second cavity (405) in step S1; S6. The analysis and processing module (26) compares the concentration data obtained in step S2 with the concentration data obtained in step S5, and calculates an average value after eliminating errors based on the concentration data obtained in step S4.

10. The oil online monitoring and control method according to claim 9, characterized in that: In step S3, it includes: S31, control the electromagnet (9) to be powered off; S32, withdraw a portion of the isolation plate (18), wait for the oil to flow into the third cavity (406), and then reset the isolation plate (18); S33, controlling the motor (7) to drive the baffle (6) to rotate counterclockwise to scrape off the abrasive particles on the inner wall of the second cavity (405).

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