Design method and device of aero-engine oil working system environment ground simulation device and measurement method

Abstract

The present application relates to the technical field of analog verification of oil monitoring sensors, in particular to a design of a ground simulation test device for anti-interference capability of an online monitoring sensor of an aero-engine oil, which verifies the environment by building an analog environment and adopting the online monitoring sensor of the oil with anti-interference capability and without anti-interference capability, and a cyclic operation design after optimization. The analog environment is built by a ground simulation assembly of an oil system and an interference environment simulation assembly connected in series on an oil circuit pipeline, which simulates different interference environments through a bubble introducer, an oil sludge introducer and a grinding dust introducer, etc. The present application strictly controls variables through ground simulation, realizes quantitative testing of anti-interference capability, effectively improves the reliability of the online monitoring sensor of the oil through ground verification, reduces detection errors of misjudgment and missed judgment, and greatly reduces operation risk and research and development cost compared with actual aero-engine in-service experiments.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of analog verification technology of detection sensor, in particular to a design method of an environmental ground simulation device for an aero-engine lubricating oil working system. BACKGROUND

[0002] Lubricating oil monitoring is one of the important means for safe operation of modern major equipment, especially the lubricating oil monitoring of aero-engine. The real-time monitoring of the size and quantity of metal debris can indirectly determine whether the aero-engine is running normally. At present, the monitoring technology in this regard in the national defense mainly adopts electromagnetic method, such as the monitoring of the flight engine of the US army. And it takes good safety guarantee effect. However, due to the influence of temperature, air pressure, vibration and the like, bubbles of different sizes and densities and viscous sludge are produced in the lubricating oil. In the electromagnetic monitoring sensor, such bubbles will cause disturbance of the electromagnetic field of the sensor, generate false alarm signals, and cause panic of the pilot. The sludge will affect the monitoring sensitivity of the electromagnetic monitoring sensor, causing missed detection. Therefore, how to handle such false signals is the technical direction for improving the performance of the online lubricating oil monitor. Since it is necessary to completely simulate the temperature, vibration, air pressure and other harsh environments of the aircraft in the air, and to produce bubbles of different sizes and small bubbles of different densities, it is obviously unrealistic to test the anti-interference ability of the lubricating oil monitor in the air. Based on this, the ground bubble and other environmental simulation device is designed to perform ground simulation verification of the lubricating oil monitoring equipment. SUMMARY

[0003] To solve the above problems, the present application provides a design method of an environmental ground simulation device for an aero-engine lubricating oil system, an environmental simulation test device and a quantitative test method of an online lubricating oil monitoring sensor. The present application is implemented as follows:

[0004] The design method of the environmental ground simulation device for the aero-engine lubricating oil working system simulates the online lubricating oil working system of the aero-engine, and is used for ground simulation test of the anti-interference ability of the online lubricating oil monitoring sensor of the aero-engine. The specific design steps include:

[0005] A, simulation environment building: including a lubricating oil working system ground simulation assembly and an interference environment simulation assembly;

[0006] The lubricating oil working system ground simulation assembly includes a lubricating oil tank, a booster pump, an oil return pump, a radiator, an oil-gas separator, and an oil circuit pipeline connecting the oil outlet and the oil return port of the lubricating oil tank for oil circulation;

[0007] The interference environment simulation assembly is connected in series on the oil circuit pipeline, and includes a bubble introducer, a sludge introducer and a grinding dust introducer; the bubble introducer generates bubbles of different sizes and introduces the bubbles into the oil circuit pipeline quantitatively; the sludge introducer decomposes pre-prepared sludge materials into different structures and sizes and then sprays and pressurizes the sludge into the oil circuit pipeline quantitatively; and the grinding dust introducer uniformly mixes pre-prepared grinding dust of different materials and different particle sizes and then sprays and pressurizes the grinding dust into the oil circuit pipeline quantitatively.

[0008] B. Simulation environment verification: one or more groups of simulation environments are built, the oil online monitoring sensors with anti-interference capability and the oil online monitoring sensors without anti-interference capability are connected in series on the oil circuit pipeline between the interference environment simulation assembly and the oil return port, the same interference environment simulation variables are controlled, when the oil liquid with bubbles, sludge and grinding dust flows through the oil online monitoring sensors, the simulation environment building effect is verified according to the monitoring reaction of the oil online monitoring sensors; further, the optimized simulation environment is used for ground simulation test of the anti-interference capability of the oil online monitoring sensors.

[0009] C. Circulating operation of the simulation environment: a grinding dust and sludge collector is connected in series on the oil circuit pipeline close to the oil return port, the oil liquid in the oil circuit pipeline is de-dusted and de-sludged, then flows back into the oil tank through the oil return port, and then flows out of the oil tank after oil-gas separation, and the circulating operation is realized.

[0010] The application further discloses an environment simulation test device for anti-interference capability of an oil online monitoring sensor, which comprises an oil tank, a booster pump, an oil return pump, a radiator, an oil-gas separator, an oil circuit pipeline connected with an oil outlet and an oil return port of the oil tank, and an interference environment simulation assembly connected in series on the oil circuit pipeline.

[0011] A shell is connected in series on the oil circuit pipeline in a sleeve shape, a plurality of branch pipes connected with the oil circuit pipeline are arranged on a side wall of the shell, and a control valve is arranged at a connecting port;

[0012] The bubble introducer, the sludge introducer and the grinding dust introducer are respectively arranged on different branch pipes;

[0013] The bubble introducer comprises a cylindrical gas containing chamber, an electrically-controlled gas pushing piston is arranged in the gas containing chamber, a gas releasing port of the gas containing chamber corresponds to a connecting port of the branch pipe, and an aeration disc is arranged at the gas releasing port;

[0014] The sludge introducer comprises a sludge pre-mixing chamber, a mixture of oil liquid and sludge is pre-filled in the sludge pre-mixing chamber, a micro ultrasonic oscillator is arranged in the sludge pre-mixing chamber to mix the oil and the sludge, and a sludge guiding port of the sludge pre-mixing chamber corresponds to the connecting port of the branch pipe, and an electrically-controlled pressure pump head is arranged at the sludge guiding port;

[0015] The abrasive dust introducer comprises an abrasive dust premixing chamber, the inner premixing chamber is pre-filled with oil liquid and a mixture of various metal abrasive dusts, a micro stirring paddle is arranged in the abrasive dust premixing chamber, and an abrasive dust outlet of the abrasive dust premixing chamber corresponds to a communication opening of the branch pipe, wherein an electric control spray pressure head is arranged at the abrasive dust outlet.

[0016] During simulation test, the oil system is circulated, different sizes of bubbles or bubble groups are generated by the bubble introducer, the oil sludge mixture is generated by the oil sludge introducer, and the abrasive dust oil mixture is generated by the abrasive dust introducer, which are quantitatively injected into the main oil pipeline at different times or simultaneously to simulate the interference environment of the online oil monitoring sensor of the aero-engine and test the anti-interference ability of the online oil monitoring sensor.

[0017] As a further improvement, the environment simulation test device further comprises a heater, a vibrator, a pressure device and an electromagnetic interference device to simulate the temperature, vibration, air pressure and electromagnetic interference of the oil liquid.

[0018] As a further improvement, a plurality of openable and closable micro air inlet holes are arranged on the side wall of the container chamber along the circumferential direction.

[0019] As a further improvement, the online oil monitoring sensor is connected in series on the oil pipeline between the interference environment simulation assembly and the oil return port, and an abrasive dust and oil sludge collector is also connected in series on the oil pipeline close to the oil return port to collect the introduced abrasive dust and oil sludge for recycling of the materials and oil liquid.

[0020] As a further improvement, a plurality of air holes of different sizes or a plurality of group air holes of the same size are arranged on the aeration disc, and the air holes are made by laser etching.

[0021] As a further improvement, the mixture of metal abrasive dusts comprises iron dust particles and aluminum dust particles, and the size range of the metal particles is set to 10-5000 microns.

[0022] Further, the application also discloses a quantitative test method for the anti-interference ability of an online oil monitoring sensor, which adopts the environment simulation test device according to any one of the above to perform ground simulation test on the anti-interference ability of the online oil monitoring sensor of an aero-engine, and the specific steps are as follows:

[0023] A, an automatically circulated oil return circuit: the oil liquid flows out of the oil outlet of the oil tank through the booster pump, the oil return pump and the connected oil pipeline, sequentially passes through the interference environment simulation assembly, the online oil monitoring sensor and the abrasive dust and oil sludge collector, and then flows back to the oil tank through the oil return port and circulates in this way;

[0024] B, interference environment simulation: open the control valve at the branch pipe communication port, control the air bubble guide injector push gas piston in the gas chamber through the electric control system and extrude the gas in the main oil way pipeline, form micro-bubbles or micro-bubble groups of different sizes through the aeration disc; the oil sludge mixed liquid with certain viscosity after ultrasonic oscillation mixing is quantitatively injected into the main oil way pipeline by using the pressure pump; the metal scrap mixed liquid after mechanical stirring is quantitatively sprayed into the main oil way pipeline;

[0025] C, the anti-interference ability test of the oil online monitoring sensor: the oil liquid mixed with quantitative micro-bubbles, oil sludge and metal scrap flows through the oil online monitoring sensor, control elements are injected, when the error between the metal scrap amount measured by the oil online monitoring sensor and the injected amount is greater than the set error threshold, it is determined that the anti-interference ability of the oil online monitoring sensor does not meet the standard; different variables are controlled to test multiple times, when the error between the metal scrap amount measured by the oil online monitoring sensor in multiple tests and the injected amount is within the set error range, it is determined that the anti-interference ability of the oil online monitoring sensor meets the standard.

[0026] Compared with the prior art, the present application can obtain the following technical effects:

[0027] One, the present application discloses a design method of an aero-engine oil system environment ground simulation device, including necessary components in the oil system, wherein the oil outlet and the oil return port of the oil tank are directly communicated through the oil pipeline, and the interference environment simulation assembly is connected in series on the oil pipeline to simulate the mixed impurities such as bubbles, oil sludge and scrap carried by the oil liquid flowing through the engine, which will be injected into the oil pipeline through the branch pipe, the rear end of the interference environment simulation assembly is connected in series with the oil online monitoring sensor to test the anti-interference ability of the sensor, after passing through the online monitoring sensor, the oil liquid is pretreated by using the oil-gas separator, the scrap and sludge collector and the radiator, and the impurities are removed to facilitate the quantitative setting of the interference environment simulation factors in the next cycle, realizing the effectiveness of the ground simulation, automatic cycle test, and improving the reliability of the anti-interference ability verification of the oil online monitoring sensor.

[0028] II. Under the guidance of the design method, the application discloses an environmental simulation test device and a quantitative measurement method thereof. The interference environment simulation assembly is designed to include a sleeve-shaped shell connected in series on an oil circuit pipeline. Branch pipes are arranged in communication on the shell, and the branch pipes are in communication with the oil circuit. Control valves are arranged at the communication ports to realize one-way air and material feeding and prevent oil in the oil circuit pipeline from overflowing into the branch pipes. Bubble, oil sludge and abrasive chip importers are arranged in the branch pipes. Needle cylinder extrusion is adopted to cooperate with an aeration structure to realize simulation of different sizes of micro-bubbles or micro-bubble groups. Ultrasonic oscillation mixing and pressure pump are adopted to realize smooth injection of viscous oil sludge mixture into the oil circuit pipeline. Mechanical stirring mixing and jet pressure are adopted to realize uniform mixing of metal abrasive chips and oil in the oil circuit pipeline. The environmental simulation test device has a simple and reliable overall structure. Furthermore, the quantitative test of the anti-interference capability is realized by strictly controlling variables through electric control. The reliability of the oil online monitoring sensor is effectively improved through ground verification, and the detection errors of misjudgment and missed judgment are reduced. Compared with the actual in-service experiment of the aero-engine, the operation risk and research and development cost are greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the application examples or the prior art or the descriptions in the prior art, it is obvious that, for ordinary skilled persons in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0030] Figure 1 It is a brief structure diagram of the environmental ground simulation device for the aero-engine oil working system of the application.

[0031] Figure 2 It is a structure diagram of the interference environment simulation assembly of the application.

[0032] Figure 3 It is a flow chart of the design method of the environmental ground simulation device for the aero-engine oil working system of the application.

[0033] In the drawings:

[0034] 10 - oil tank; 11 - booster pump; 12 - oil return pump; 13 - radiator; 14 - oil paint separator; 15 - abrasive chip and oil sludge collector;

[0035] 20 - interference environment simulation assembly; 21 - shell; 22 - branch pipe; 23 - bubble importer; 24 - oil sludge importer; 25 - abrasive chip importer;

[0036] 30 - heater; 31 - vibrator; 32 - pressure device; 33 - electromagnetic interference device;

[0037] 40 - oil online monitoring sensor;

[0038] 50 - oil circuit pipeline. DETAILED DESCRIPTION

[0039] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application.

[0040] With the development of advanced aero-engine technology, the position of its lubricating oil system is also increasingly prominent, and it has become the research focus of major engine research institutions. The lubricating oil system is an important accessory to ensure the normal operation of the engine, and is also an important way to obtain engine health information, and plays an important role in engine health management. Through online monitoring of lubricating oil, the temperature, viscosity, and wear debris of the oil are monitored to infer the health status of the engine, which is a relatively mature health monitoring method. Due to the complex operating environment of the aero-engine, some factors in the oil that interfere with detection are inevitable, such as common bubbles, oil sludge, etc., which are prone to false alarm or missed judgment; based on this, the lubricating oil online monitoring sensor is constantly improved, and a lubricating oil online monitoring sensor with anti-interference ability has appeared, but it still needs to be repeatedly tested and verified, and it is not suitable for being directly equipped on the in-service aero-engine for testing or direct use. Based on this, the present application adopts a ground simulation method to research the design method of the ground simulation device of the aero-engine lubricating oil system, the environmental simulation test device, and the quantitative test method of the lubricating oil online monitoring sensor. The specific contents are as follows:

[0041] Reference is made to the accompanying drawings Figure 3 A design method of an aero-engine lubricating oil working system environmental ground simulation device, the environmental simulation device simulates the online lubricating oil working system of an aero-engine, and is used for ground simulation testing of the anti-interference ability of an aero-engine lubricating oil online monitoring sensor. The specific design steps include:

[0042] A, simulation environment building: including a lubricating oil system ground simulation assembly and an interference environment simulation assembly;

[0043] The lubricating oil system ground simulation assembly includes a lubricating oil tank 10, a booster pump 11, an oil return pump 12, a radiator 13, an oil-gas separator 14, and an oil circuit pipeline 50 connecting the oil outlet and the oil return port of the lubricating oil tank 10 for oil circulation;

[0044] Further, the heater 30, the vibrator 31, the pressurizer 32 and the electromagnetic interference device 33 are connected in series on the oil circuit pipeline 50 to simulate the normal oil temperature, engine vibration, air pressure and electromagnetic interference;

[0045] The interference environment simulation assembly is connected in series on the oil circuit pipeline 50, and includes the bubble introducer 23, the oil sludge introducer 24 and the abrasive grit introducer 25. The bubble introducer 23 generates bubbles of different sizes and introduces them into the oil circuit pipeline 50 quantitatively. The oil sludge introducer 24 decomposes the pre-prepared oil sludge material into different structures and sizes and sprays it into the oil circuit pipeline 50 quantitatively. The abrasive grit introducer 25 mixes the pre-prepared abrasive grits of different materials and different particle sizes and sprays them into the oil circuit pipeline 50 quantitatively.

[0046] The booster pump 11 and the oil return pump 12 are used for pumping out and pumping back the oil flow, and the flow rate of the oil in the oil circuit pipeline 50 can be controlled by controlling the booster pump 11 and the oil return pump 12.

[0047] The radiator 13 is used for radiating and cooling the lubricating oil system and the heated oil. The oil-gas separator 14 separates and removes the bubbles from the oil with bubbles.

[0048] B. Simulation environment verification: In the design of the embodiment, two groups of simulation environments are built. The lubricating oil online monitoring sensor 40 with anti-interference ability and the lubricating oil online monitoring sensor 40 without anti-interference ability are connected in series on the oil circuit pipeline 50 between the interference environment simulation assembly and the oil return port. The same interference environment simulation variables are controlled. The specific anti-interference ability of the lubricating oil online monitoring sensor 40 can be set as single factor anti-interference ability or comprehensive factor anti-interference ability, such as only anti-bubble or only anti-oil sludge or comprehensive, etc. The verification conditions are set according to the type of the lubricating oil online monitoring sensor 40. When the oil with bubbles, oil sludge and abrasive grits flows through the lubricating oil online monitoring sensor 40, the simulation environment building effect is verified according to the monitoring reaction of the lubricating oil online monitoring sensor 40. Further, the optimized simulation environment is used for the ground simulation test of the anti-interference ability of the lubricating oil online monitoring sensor 40. In other embodiments, the simulation environment can be built according to the experimental situation. Multiple groups or one group can be built. The lubricating oil online monitoring sensor 40 is designed to be detachable, and the contrast test is performed by replacing the lubricating oil online monitoring sensor 40.

[0049] C. Circulating operation of the simulation environment: The abrasive grit and oil sludge collector 25 is connected in series on the oil circuit pipeline 50 near the oil return port. The oil in the oil circuit pipeline is de-gritted and de-sludged, and then flows back into the lubricating oil tank through the oil return port. After oil-gas separation, the oil flows out of the lubricating oil tank and circulates.

[0050] Reference is made to the accompanying drawings Figures 1-2The application also discloses an environmental simulation testing device for anti-interference capability of an oil online monitoring sensor.

[0051] A shell 21 is in series on the oil pipeline 50 in a sleeve shape, a plurality of branch pipes 22 communicating with the oil pipeline 50 are arranged on the side wall of the shell 21, and the communicating ports are provided with control valves; a bubble introducing device 23, a sludge introducing device 24 and a grinding dust introducing device 25 are respectively arranged on different branch pipes 22, the branch pipes 22 are in communication with the oil pipeline, the control valves are opened, and one-way air and material are introduced through the control valves to prevent the oil in the oil pipeline from overflowing into the branch pipes.

[0052] The bubble introducing device 23 comprises a cylindrical gas containing chamber, an electrically-controlled gas pushing piston is arranged in the gas containing chamber, and a gas releasing port of the gas containing chamber corresponds to the communicating port of the branch pipe 22, wherein an aeration disc is arranged at the gas releasing port, a plurality of micro aeration holes with different sizes are arranged on the aeration surface of the detachably arranged aeration disc, the gas in the gas containing chamber is extruded into the oil pipeline through the gas pushing piston, and the gas is made to enter the oil to be decomposed into a plurality of fine bubbles, so that the bubble interference formed in the process of engine operation due to vibration, temperature and other environmental influences is simulated quantitatively.

[0053] The sludge introducing device 24 comprises a sludge premixing chamber, the sludge premixing chamber is pre-filled with an oil and sludge mixture, a micro ultrasonic oscillator is arranged in the sludge premixing chamber to mix the oil and sludge, a sludge guide port of the sludge premixing chamber corresponds to the communicating port of the branch pipe 22, wherein an electrically-controlled pressure pump head is arranged at the sludge guide port, the oil and sludge are mixed through the micro ultrasonic oscillator to form a mixed liquid with certain viscosity, and the mixed liquid is extruded into the oil quantitatively through the pressure pump.

[0054] The grinding dust introducing device 25 comprises a grinding dust premixing chamber, the grinding dust premixing chamber is pre-filled with an oil and a plurality of metal grinding dust mixtures, a micro stirring paddle is arranged in the grinding dust premixing chamber, and a dust discharging port of the grinding dust premixing chamber corresponds to the communicating port of the branch pipe, wherein an electrically-controlled spray pressure head is arranged at the dust discharging port, the plurality of metal grinding dust mixtures with different particle sizes are fully mixed with the oil through mechanical stirring, the metal grinding dust mixtures with different particle sizes are scattered and sprayed into the oil pipeline through the spray pressure, so that the distribution is closer to the actual state, and the diameter of a spray pressure port of the spray pressure head is greater than the maximum particle diameter of the metal grinding dust.

[0055] During the simulation test, the oil system is circulated, different sizes of bubbles or bubble groups are generated by the bubble guide 23, the oil sludge mixture is generated by the oil sludge guide 24, and the abrasive oil mixture is generated by the abrasive guide 25, which are quantitatively injected into the main oil pipeline at different times or simultaneously to simulate the interference environment of the online oil system of the aero-engine and test the anti-interference ability of the online oil monitoring sensor. The environment simulation test device has simple and reliable overall structure, effectively improves the reliability of the online oil monitoring sensor through ground verification, reduces detection errors such as misjudgment and omission, and has stronger operability compared with the scheme of testing the in-service aero-engine, which greatly reduces the operation risk and test cost.

[0056] As a further improvement, a plurality of small openable air inlet holes are arranged on the side wall of the air chamber in the circumferential direction, and the air chamber is in communication with the outside through the small air inlet holes to balance the air pressure in the air chamber.

[0057] As a further improvement, the online oil monitoring sensor 40 is connected in series on the oil pipeline 50 between the interference environment simulation assembly and the oil return port, and an abrasive and oil sludge collector is also connected in series on the oil pipeline 50 near the oil return port to collect the introduced abrasives and oil sludge for recycling of materials and oil.

[0058] As a further improvement, a plurality of air holes of different sizes or a plurality of group air holes of the same size are arranged on the aeration disc, and the air holes are made by laser etching.

[0059] As a further improvement, the metal abrasive mixture includes iron and aluminum particles, and the size of the metal particles is set to 10-5000 μm.

[0060] Further, the application also discloses a quantitative test method for the anti-interference ability of an online oil monitoring sensor, which adopts the environment simulation test device as described in any one of the above to perform ground simulation test on the anti-interference ability of the online oil monitoring sensor of the aero-engine, and the specific steps are as follows:

[0061] A, automatic circulation of the oil circuit: the oil is circulated from the oil outlet of the oil tank 10 through the booster pump 11, the oil return pump 12 and the connected oil pipeline 50, sequentially flows through the interference environment simulation assembly, the online oil monitoring sensor 40 and the abrasive and oil sludge collector 15, and then flows back to the oil tank 10 through the oil return port for circulation.

[0062] B, interference environment simulation: open the control valve at the communication port of each branch pipe 22, control the push piston of the bubble introducer 23 to move in the gas chamber and quickly extrude gas into the main oil line pipeline 50 through the electric control system, form micro-bubbles or micro-bubble groups of different sizes through the aeration disc; the oil sludge mixed liquid with certain viscosity after ultrasonic oscillation and mixing is quantitatively injected into the main oil line pipeline 50 by using a pressure pump; the metal abrasive mixed liquid after mechanical stirring and mixing is quantitatively sprayed into the main oil line pipeline 50;

[0063] C, anti-interference ability test of the oil online monitoring sensor: the oil liquid mixed with a certain amount of micro-bubbles, oil sludge and metal abrasives flows through the oil online monitoring sensor, control elements are injected, when the error between the amount of metal abrasives measured by the oil online monitoring sensor and the injected amount is greater than the set error threshold, it is determined that the anti-interference ability of the oil online monitoring sensor does not meet the standard; control different variables to test multiple times, when the error between the amount of metal abrasives measured by the oil online monitoring sensor and the injected amount in multiple tests is within the set error range, it is determined that the anti-interference ability of the oil online monitoring sensor meets the standard.

[0064] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The design method of the ground simulation device for the environment of the lubricating oil working system of the aero-engine, which simulates the on-line lubricating oil working system of the aero-engine for the ground simulation test of the anti-interference ability of the on-line monitoring sensor of the lubricating oil of the aero-engine, characterized in that, The specific design steps include: A. Simulated environment building: including a lubricating oil working system ground simulation assembly and an interference environment simulation assembly; The lubricating oil working system ground simulation assembly includes a lubricating oil tank, a booster pump, an oil return pump, a radiator, an oil-gas separator, and an oil circuit pipeline connecting the lubricating oil tank oil outlet and the oil return port, for oil circulation; The interference environment simulation assembly is connected in series on the oil circuit pipeline, and includes a bubble introducer, an oil sludge introducer, a grinding dust introducer, and an electromagnetic interference device, the bubble introducer generates bubbles of different sizes and introduces them into the oil circuit pipeline quantitatively, the oil sludge introducer decomposes pre-prepared oil sludge material into different structures and sizes and sprays it into the oil circuit pipeline quantitatively, the grinding dust introducer mixes pre-prepared grinding dust of different materials and different particle sizes and sprays it into the oil circuit pipeline quantitatively, and the electromagnetic interference device simulates the electromagnetic interference of an aero-engine by emitting interference signals; B. Simulated environment verification: build one or more simulated environments, connect lubricating oil online monitoring sensors with and without interference resistance in series on the oil circuit pipeline between the interference environment simulation assembly and the oil return port, control the same interference environment simulation variables, and when oil containing bubbles, oil sludge, and grinding dust flows through the lubricating oil online monitoring sensor, verify the effect of the simulated environment building according to the monitoring reaction of the lubricating oil online monitoring sensor; further, use the optimized simulated environment to conduct ground simulation test on the interference resistance of the lubricating oil online monitoring sensor; C. Circulating operation of the simulated environment: connect a grinding dust and oil sludge collector in series on the oil circuit pipeline near the oil return port, the oil in the oil circuit pipeline is de-dusted and de-sludged, then flows back into the lubricating oil tank through the oil return port, and after oil-gas separation, flows out of the lubricating oil tank, and circulates.

2. An environmental simulation test device for anti-interference capability of an oil on-line monitoring sensor, comprising an oil tank, a booster pump, an oil return pump, a radiator, an oil-gas separator, and an oil circuit pipeline connecting an oil outlet and an oil return port of the oil tank, characterized in that, It also includes an interference environment simulation assembly connected in series on the oil circuit pipeline, which includes: A shell connected in series on the oil circuit pipeline in the form of a sleeve, a plurality of branch pipes connected to the oil circuit pipeline are arranged on the side wall of the shell, and the connecting ports are provided with control valves; The bubble introducer, the oil sludge introducer, and the grinding dust introducer are respectively arranged on different branch pipes; The bubble introducer includes a cylindrical gas chamber, an electrically controlled gas pushing piston is arranged in the gas chamber, and the gas outlet of the gas chamber corresponds to the connecting port of the branch pipe, wherein an aeration disc is arranged at the gas outlet; The oil sludge introducer includes an oil sludge premixing chamber, the oil sludge premixing chamber is pre-filled with an oil and oil sludge mixture, a micro ultrasonic oscillator is arranged in the oil sludge premixing chamber to mix the oil and the material, and the sludge outlet of the oil sludge premixing chamber corresponds to the connecting port of the branch pipe, wherein an electrically controlled pressure pump head is arranged at the sludge outlet; The grinding dust introducer includes a grinding dust premixing chamber, the grinding dust premixing chamber is pre-filled with an oil and a plurality of metal grinding dust mixture, a micro stirring paddle is arranged in the grinding dust premixing chamber, and the dust outlet of the grinding dust premixing chamber corresponds to the connecting port of the branch pipe, wherein an electrically controlled spray head is arranged at the dust outlet; During simulation test, the oil system circulates, different sizes of bubbles or bubble groups are generated by the bubble introducer, the oil sludge mixture is generated by the oil sludge introducer, and the metal abrasion mixture is generated by the metal abrasion introducer, which are quantitatively injected into the main oil pipeline at different times or simultaneously to simulate the interference environment of the online oil monitoring sensor of the aero-engine.

3. The environmental simulation test device for anti-interference capability of an on-line monitoring sensor of lubricating oil according to claim 2, characterized in that, The environmental simulation test device further comprises a heater, a vibrator, a pressurizer and an electromagnetic interference device to simulate the temperature, vibration, air pressure and electromagnetic interference of the oil.

4. The environmental simulation test device for anti-interference capability of an on-line monitoring sensor of lubricating oil according to claim 2, characterized in that, The side wall of the gas chamber is provided with a plurality of small openable air inlet holes.

5. The environmental simulation test device for anti-interference capability of an on-line monitoring sensor of lubricating oil according to claim 2, characterized in that, The online oil monitoring sensor is connected in series between the interference environment simulation assembly and the oil return pipe, and a metal abrasion and oil sludge collector is also connected in series on the oil pipeline near the oil return pipe to collect the introduced metal abrasion and oil sludge for recycling.

6. The environmental simulation test device for anti-interference capability of an on-line monitoring sensor of lubricating oil according to claim 2, characterized in that, The aeration disc is detachably provided with a gas release port, and a plurality of gas holes of different sizes or a plurality of group gas holes of the same size are arranged on the aeration disc.

7. The environmental simulation test device for anti-interference capability of an on-line monitoring sensor of lubricating oil according to claim 2, characterized in that, The metal abrasion mixture comprises iron and aluminum particles, and the size of the metal particles is 10-5000 μm.

8. A quantitative test method for the anti-interference ability of an oil on-line monitoring sensor, using the environmental simulation test device according to any one of claims 2 to 7 to perform ground simulation test for the anti-interference ability of an oil on-line monitoring sensor of an aero-engine, characterized in that, The specific steps are as follows: A. Automatic circulating oil circuit: the oil flows out of the oil outlet of the oil tank through the booster pump, the oil return pump and the connected oil pipeline, and then flows through the interference environment simulation assembly, the online oil monitoring sensor and the metal abrasion and oil sludge collector, and then flows back to the oil tank through the oil return port, and the cycle is repeated; B. Interference environment simulation: open the control valves at the branch pipe communication ports, control the gas pushing piston of the bubble introducer to move in the gas chamber and quickly extrude the gas into the main oil pipeline, form micro-bubbles or micro-bubble groups of different sizes through the aeration disc, quantitatively inject the oil sludge mixture with a certain viscosity after ultrasonic oscillation and mixing into the main oil pipeline by using a pressure pump, and quantitatively spray and press the metal abrasion mixture after mechanical stirring into the main oil pipeline; C. Anti-interference ability test of the online oil monitoring sensor: the oil mixed with a certain amount of micro-bubbles, oil sludge and metal abrasion flows through the online oil monitoring sensor, and the control elements are injected, and when the error between the measured amount of metal abrasion and the injected amount is greater than the set error threshold, it is determined that the anti-interference ability of the online oil monitoring sensor does not meet the standard; different variables are controlled to perform multiple tests, and when the error between the measured amount of metal abrasion and the injected amount in the multiple tests of the online oil monitoring sensor is within the set error range, it is determined that the anti-interference ability of the online oil monitoring sensor meets the standard.

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