Engine oil temperature, pressure, vibration and wear particle size comprehensive monitoring device

Abstract

The present application relates to engine oil state monitoring technical field, especially to a kind of engine oil temperature and pressure, vibration and abrasion dust granularity comprehensive monitoring device, including metal abrasion dust monitoring sensor, temperature and pressure monitoring component, vibration monitoring component, data processing controller and display, by the inside integrated setting temperature and pressure monitoring component, vibration monitoring component in oil metal abrasion dust monitoring sensor, including three parallelly arranged coils form two groups of mutual inductance coil, in combination with an elastic insulator, a counterweight pressure block integrated in metal abrasion dust monitoring sensor, realized four-in-one monitoring of oil temperature, oil pressure, sensor vibration, abrasion dust granularity, better guarantee the safe work of engine lubricating oil system.The overall structure of the device is compact, with high integration, achieving multiple monitoring functions in a small sensor structure, better adapting to the complex engine oil monitoring environment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engine oil condition monitoring, and particularly relates to a kind of engine oil temperature, pressure, vibration and wear debris particle size comprehensive monitoring device. BACKGROUND

[0002] The dynamic monitoring of the lubricating oil system of major equipment is a research direction that is increasingly emphasized by countries around the world. This is because the real-time parameters of the oil temperature, oil pressure, metal wear debris vibration, etc. of the lubricating oil system can effectively reflect the safety state of the equipment and provide early warning of possible equipment failures. In particular, the engine system equipment of aircraft and automobiles, etc. will cause a certain amount of wear to mechanical parts before failure occurs in the running state, forming metal wear particles that enter the lubricant oil, etc. The wear particles enter the engine system with the oil, which can affect the normal operation of the engine and exacerbate system failures. Therefore, it is necessary to detect and monitor the oil temperature, oil pressure, and wear debris of the oil in the electromechanical equipment in real time.

[0003] Patent CN116085088A discloses an aircraft lubricating oil tank system with integrated monitoring functions for oil temperature, oil, and metal powder. However, it uses conventional sensors stacked together. Most current monitors also stack temperature sensors, pressure sensors, acceleration sensors, and electromagnetic sensors (used to detect metal wear debris) together. This design of multi-functional sensors is simple and easy to implement, but it has the disadvantages of large size and low integration.

[0004] Based on the above problems, the present application provides a kind of engine lubricating oil oil temperature, pressure, vibration and wear debris particle size comprehensive monitoring device based on the prior art. SUMMARY

[0005] To solve the above problems, the present application provides a kind of engine oil temperature, pressure, vibration and wear debris particle size comprehensive monitoring device, which is implemented as follows:

[0006] A kind of engine oil temperature, pressure, vibration and wear debris particle size comprehensive monitoring device, comprising a metal wear debris monitoring sensor and a data processing controller electrically connected to the metal wear debris monitoring sensor. The metal wear debris monitoring sensor is connected in series to the engine oil circuit, and the oil circuit channel passes through it. The data processing controller obtains the wear debris particle size of the lubricating oil through the metal wear debris monitoring sensor. The characteristics are as follows:

[0007] The metal abrasion monitoring sensor further comprises a first coil, a second coil and a third coil which are parallel to each other and in mutual induction, and an elastic insulator is arranged between the first coil and the second coil, and a counterweight block is arranged between the second coil and the third coil; the first coil, the second coil and the third coil are electrically connected with the data processing controller respectively; the first coil is in contact with the oil to obtain the oil temperature by taking the first coil as a temperature monitoring component; the first coil and the second coil form a temperature and pressure monitoring component to obtain the oil pressure signal; and the second coil and the third coil form a vibration monitoring component to obtain the oil vibration value.

[0008] As a further improvement, the first coil and the second coil are both made of copper wire.

[0009] As a further improvement, the data processing controller comprises an oil abrasion particle size data processing and analysis module, an oil temperature data processing and analysis module, an oil pressure data processing and analysis module, and a sensor vibration data processing and analysis module.

[0010] The oil abrasion particle size data processing and analysis module obtains the oil abrasion particle size through the detection coil of the metal abrasion monitoring sensor.

[0011] The oil temperature data processing and analysis module obtains the oil temperature by detecting the resistance signal value of the first coil made of copper wire at different temperatures.

[0012] The oil pressure data processing and analysis module obtains the oil pressure by monitoring the change of mutual induction electric signal caused by the change of distance between the first coil and the second coil due to the up-and-down floating change of the first coil caused by the pressure of the oil.

[0013] The sensor vibration data processing and analysis module obtains the vibration value of the sensor by monitoring the intense change of mutual induction electric signal string between the third coil and the second coil caused by frequent relative vibration through the counterweight block which amplifies the mechanical vibration of the whole sensor and transmits it to the third coil.

[0014] As a further improvement, recessed installation grooves of the temperature and pressure monitoring component and the vibration monitoring component are arranged on the side wall of the coil skeleton inside the metal abrasion monitoring sensor close to the oil passage, and the temperature and pressure monitoring component and the vibration monitoring component are sequentially embedded in the installation grooves.

[0015] As a further improvement, the first coil, the elastic insulator, the second coil, the counterweight block and the third coil are stacked from bottom to top in the installation grooves; the second coil is fixed on the inner side wall of the installation grooves, the first coil and the elastic insulator float up and down relative to the oil, and the third coil and the counterweight block vibrate synchronously with the vibration of the sensor.

[0016] As a further improvement, the housing of the metal debris monitoring sensor is provided with an oil contact port corresponding to the slot opening of the mounting slot, the first coil is in contact with oil through the oil contact port, and the elastic insulator is sealed on the upper end of the first coil.

[0017] As a further improvement, a sealing assembly is provided at the oil contact port.

[0018] As a further improvement, the number of turns of the first coil, the second coil and the third coil is the same, the winding direction of the first coil and the third coil is the same and opposite to the winding direction of the second coil.

[0019] As a further improvement, the rear end of the metal debris monitoring sensor is further provided with a permanent magnet, which adsorbs the ferromagnetic debris flowing in the oil.

[0020] Compared with the prior art, the present application has the following beneficial effects:

[0021] The present application adopts a pure inductive sensor design, and sets a temperature and pressure monitoring assembly and a vibration monitoring assembly in the oil metal debris monitoring sensor, so that the device has a compact overall structure and high integration, realizes the effect of multiple monitoring functions in a small sensor structure, and is more suitable for complex oil monitoring environment of an engine.

[0022] Firstly, the temperature and pressure monitoring assembly of the present application uses the principle of mutual inductance of coils, and two coils made of copper wires are used, which are parallel to each other. The temperature of the oil is determined by monitoring the change of the resistance signal of the coil and processing and analyzing the resistance signal. The coil made of copper wire has high sensitivity to temperature change, can effectively monitor the temperature of the oil, and has small interference to the monitoring of debris. The first coil is in contact with the oil circuit, and the first coil is affected by the pressure of the oil to produce up and down floating changes. The oil pressure condition is obtained by monitoring the mutual inductance signal change between the first coil and the second coil, which is easy to collect signals and easy to calibrate pressure.

[0023] On this basis, a vibration monitoring assembly is further integrated, a third coil is arranged at the upper end of the second coil and is in mutual inductance with the second coil, and a configuration block is arranged between the third coil and the second coil. The vibration signal of the whole sensor is transmitted to the third coil through the configuration block, and the vibration value of the sensor is obtained by the relative vibration of the third coil and the second coil.

[0024] Secondly, the two groups of mutual inductance coils are formed by three parallel coils, an elastic insulator and a counterweight block are integrated in the metal abrasion monitoring sensor, four-in-one monitoring of oil temperature, oil pressure, sensor vibration and abrasion particle size is realized, efficient monitoring and real-time feedback of the monitoring results better guarantee the safe work of the engine lubricating oil system. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the present application or the prior art or the description of the prior art required in the prior art, it is obvious that for ordinary skilled in the art, without creative labor, other drawings can also be obtained according to these drawings.

[0026] Figure 1 It is an external structure diagram of the metal abrasion monitoring sensor of the present application.

[0027] Figure 2 It is a sectional view of the metal abrasion monitoring sensor of the present application.

[0028] Figure 3 It is Figure 2 It is an enlarged schematic view of the A area.

[0029] Figure 4 It is a structure diagram of the coil framework of the present application.

[0030] Figure 5 It is a structure diagram of the comprehensive monitoring device of the present application.

[0031] In the figure:

[0032] 10-oil circuit;

[0033] 20-metal abrasion monitoring sensor, 21-coil framework, 221-mounting groove, 22-detection coil, 23-excitation coil;

[0034] 30-temperature and pressure monitoring assembly, comprising: 31-first coil, 32-elastic insulator, 33-second coil;

[0035] 40-vibration monitoring assembly, comprising: 33-second coil, 41-third coil, 42-counterweight block;

[0036] 50-data processing controller;

[0037] 60-display. DETAILED DESCRIPTION

[0038] 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.

[0039] In the description of the present application, the terms "first", "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features.

[0040] The engine generates a large amount of metal debris when it is working abnormally, and enters the lubricating oil, and the temperature, oil pressure and the like of the oil in the lubricating oil system will change. In order to better monitor the working state of the engine, a monitor is placed in the middle part of the oil return pipe of the lubricating oil circuit. The relevant signals of the oil are captured by the monitoring system, and the signals are processed, so as to monitor the safety state of the engine equipment.

[0041] Most of the existing multi-parameter real-time monitoring monitors are stacked with various conventional sensors. The overall volume of the equipment is large, and the integration degree is low. Obviously, it cannot well adapt to the complex monitoring work of the engine. Based on this, the present application researches an engine oil temperature and pressure, vibration and wear debris particle size comprehensive monitoring device to achieve true multi-functional integration. The specific scheme is as follows:

[0042] Reference is made to the accompanying drawings Figures 1-5 An engine oil temperature and pressure, vibration and wear debris particle size comprehensive monitoring device is connected in series in an engine oil circuit 10, and includes a metal wear debris monitoring sensor 20, a temperature and pressure monitoring assembly 30, a vibration monitoring assembly 40, a data processing controller 50 and a display 60 which are electrically connected to each other.

[0043] The temperature and pressure monitoring assembly 30 and the vibration monitoring assembly 40 are integrally arranged in the interior of the metal wear debris monitoring sensor 20;

[0044] The temperature and pressure monitoring assembly 30 includes a first coil 31 and a second coil 33 which are parallel to each other and inductively coupled. An elastic insulator 32 is arranged between the first coil 31 and the second coil 33. Both coils are made of copper wire. The first coil 31 is in contact with the oil.

[0045] The vibration monitoring component 40 shares the second coil 33 with the temperature and pressure monitoring component 30, and further comprises a third coil 41 parallel to and in mutual induction with the second coil 33, and a counterweight block 42 is arranged between the second coil 33 and the third coil 41;

[0046] The data processing controller 50 comprises four data processing and analysis modules of oil abrasion particle size, oil temperature, oil pressure and sensor vibration;

[0047] The oil abrasion particle size data processing and analysis module: under the excitation of the excitation coil 23 of the metal abrasion monitoring sensor 20, if the oil contains metal abrasion particles, the detection coil 22 will monitor the abnormal electric signal, thereby obtaining the oil abrasion particle size;

[0048] The oil temperature data processing and analysis module: the oil temperature is obtained through the sensitivity of the first coil 31 made of copper wire to temperature change. The copper wire has high sensitivity to temperature change, and the higher the temperature, the higher the resistance value. The temperature of the oil can be quickly judged through the resistance signal value of the monitoring coil, and the state of the engine can be analyzed according to the change of the signal;

[0049] The oil pressure data processing and analysis module: the first coil 31 is in contact with the oil circuit 10, and the first coil 31 is elastically deformed upward under the influence of the pressure of the oil, and the elastic insulator 32 assists the distance change between the first coil 31 and the second coil 33. The change of mutual induction electric signal caused by the distance change between the first coil 31 and the second coil 33 is monitored to obtain the oil pressure;

[0050] The sensor vibration data processing and analysis module: the mechanical vibration of the whole sensor is amplified by the counterweight block and transmitted to the third coil, and the vibration value of the sensor is obtained by monitoring the intense change of mutual induction electric signal caused by frequent relative vibration between the third coil and the second coil.

[0051] The specific working principle is as follows:

[0052] The four monitoring functions adopt time-sharing monitoring. The oil temperature and oil pressure in the oil change little in a short time, so the first coil can be used to monitor the oil temperature first when collecting data; then the first coil and the second coil are used to monitor the oil pressure; when the oil pressure is measured, the second coil and the third coil are used to monitor the vibration of the sensor. The abrasion particle size monitoring can work synchronously with any of the oil temperature, pressure and vibration monitoring.

[0053] Grinding dust granularity monitoring: According to the principle of electromagnetic induction, when metal particles enter the energized solenoid, the inductance of the inductance coil changes, affecting the output signal of the inductance coil, and the coil output signal has a certain relationship with the parameter characteristics of the metal grinding dust granularity. Therefore, the relationship between the inductance coil output signal and the metal grinding dust granularity can be established to determine the metal grinding dust granularity through the relationship. In this embodiment, the oil metal grinding dust monitoring sensor with the winding mode of two-end excitation and middle-receiving is used for grinding dust granularity monitoring. An alternating current signal is applied to the excitation coil 23 at both ends, and the detection coil 22 receives the electrical signal change. The data processing controller 50 determines the grinding dust granularity according to the electrical signal change and displays the determination result on the display 60.

[0054] Oil temperature monitoring: When the oil flows through the oil metal grinding dust monitoring sensor, the resistance value of the first coil 31 made of copper wire changes with the change of the oil temperature. The real-time resistance signal of the first coil 31 is collected, the resistance signal is transmitted to the data processing controller 50 through the lead circuit, and the measured oil temperature is displayed on the display 60 after data processing.

[0055] Oil pressure monitoring: The second coil 33 is in contact with the oil path 10, and the second coil 33 floats up and down with the change of the oil pressure, so that the two inductance coils are close to or away from each other. The change of the magnetic field of the second coil 33 affects the first coil 31, and the signal change of the first coil 31 is monitored to calibrate the oil pressure.

[0056] Vibration monitoring: When the oil metal grinding dust monitoring sensor 20 vibrates abnormally, the counterweight block 40 vibrates synchronously with the sensor and transmits the vibration mechanically to the third coil 41. The mutual inductance between the third coil 41 and the second coil 33 is collected, and the vibration condition is determined by the data processing controller 50 and the determination result is displayed on the display 60.

[0057] Further, the metal grinding dust monitoring sensor 20 includes a shell, a coil skeleton 21, and a detection coil 22 and an excitation coil 23 wound on the coil skeleton 21. The shell fixes and protects the coil, fixes the plug socket, and is welded with the left end cover joint and the right end cover joint to form a closed cavity. In order to make the temperature and pressure monitoring assembly 30 and the vibration detection assembly more stably arranged in the metal grinding dust monitoring sensor 20, the coil skeleton 21 inside the metal grinding dust monitoring sensor 20 is recessed with a mounting groove 221 for the temperature and pressure monitoring assembly 30 and the vibration monitoring assembly on the side wall close to the oil path 10. The temperature and pressure monitoring assembly 30 and the vibration monitoring assembly are sequentially embedded in the mounting groove 221. As shown in the attached Figure 2As shown, the installation groove 221 is arranged at both ends of the coil framework 21, and the coil for monitoring the metal debris is arranged in the middle of the coil framework 21, so that the coils for monitoring the metal debris do not interfere with each other during monitoring and affect the monitoring sensitivity. The oil flowing through the oil guide pipe exerts pressure on the pipe wall. In this embodiment, the gap between the oil guide pipe and the coil framework is reasonably reserved, so that the extrusion of the oil guide pipe on the coil framework can be eliminated.

[0058] As a further improvement, the first coil 31, the elastic insulator 32, the second coil 33, the weight block 42 and the third coil 41 are stacked from bottom to top in the installation groove; wherein the second coil 33 is fixedly arranged on the inner side wall of the installation groove 221, the first coil 31 and the elastic insulator 32 float up and down with the change of the oil, and the third coil 42 and the weight block 41 vibrate synchronously with the vibration of the sensor.

[0059] As a further improvement, the metal debris monitoring sensor is provided with an oil contact port corresponding to the slot of the installation groove, the second coil is in contact with the oil through the oil contact port, and the elastic insulator blocks and seals other monitoring elements at the upper end of the first coil. In this embodiment, a sealing assembly is arranged at the oil contact port to prevent the oil from entering the interior of the sensor and damaging the use of the electronic elements in the sensor.

[0060] In this embodiment, the number of turns of the first coil 31, the second coil 33 and the third coil 41 is the same, and the winding direction of the first coil 31 and the third coil 41 is opposite to that of the second coil 33.

[0061] In this embodiment, the rear end of the metal debris monitoring sensor 20 is further provided with a permanent magnet, which adsorbs the ferromagnetic metal debris flowing in the oil, so as to prevent the metal debris particles from entering the oil system and causing damage to the equipment.

[0062] 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 modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A comprehensive monitoring device for engine lubricating oil temperature, pressure, vibration, and wear debris particle size, comprising a metal wear debris monitoring sensor (20) and a data processing controller (50) electrically connected to the metal wear debris monitoring sensor (20); the metal wear debris monitoring sensor (20) is connected in series in the engine oil circuit (10), and the oil circuit channel passes through it; the data processing controller (50) obtains the lubricating oil wear debris particle size through the metal wear debris monitoring sensor (20); characterized in that: The metal shavings monitoring sensor (20) is equipped with a first coil (31), a second coil (33), and a third coil (41) that are parallel to each other and mutually inductive. An elastic insulator (32) is provided between the first coil (31) and the second coil (33), and a counterweight block (42) is provided between the second coil (33) and the third coil (41). The first coil (31), the second coil (33), and the third coil (41) are electrically connected to the data processing controller (50). The first coil (31) is in contact with the lubricating oil to obtain the lubricating oil temperature by using the first coil (31) as a temperature monitoring component. The first coil (31) and the second coil (33) also form a temperature and pressure monitoring component (30) to obtain the lubricating oil pressure signal. The second coil (33) and the third coil (41) also form a vibration monitoring component (40) to obtain the lubricating oil vibration value.

2. The comprehensive monitoring device for engine lubricating oil temperature and pressure, vibration, and wear debris particle size according to claim 1, characterized in that, Both the first coil (31) and the second coil (33) are made of copper wire.

3. The comprehensive monitoring device for engine lubricating oil temperature and pressure, vibration, and wear debris particle size according to claim 2, characterized in that, The data processing controller (50) includes a lubricating oil wear debris particle size data processing and analysis module, a lubricating oil temperature data processing and analysis module, a lubricating oil pressure data processing and analysis module, and a sensor vibration data processing and analysis module. The lubricating oil wear debris particle size data processing and analysis module obtains the lubricating oil wear debris particle size through the detection coil (22) of the metal wear debris monitoring sensor (20); The lubricating oil temperature data processing and analysis module obtains the lubricating oil temperature by detecting the resistance signal value of the first coil (31) made of copper wire at different temperatures; The lubricating oil pressure data processing and analysis module contacts the oil circuit (10) through the first coil (31). The first coil (31) fluctuates up and down due to the influence of the lubricating oil pressure. The lubricating oil pressure is obtained by monitoring the change of mutual inductance signal caused by the change of distance between the first coil (31) and the second coil (33). The sensor vibration data processing and analysis module amplifies the overall mechanical vibration of the sensor through the counterweight block (42) and transmits it to the third coil (41). It monitors the changes in the mutual inductance signal string caused by the frequent relative vibration between the third coil (41) and the second coil (33) to obtain the vibration value of the sensor.

4. The comprehensive monitoring device for engine lubricating oil temperature and pressure, vibration, and wear debris particle size according to claim 1, characterized in that, The metal shavings monitoring sensor (20) includes a housing, a coil frame (21), and a detection coil (22) and an excitation coil (23) wound on the coil frame (21). The housing is used to fix and protect the coil and is welded to the left end cap joint and the right end cap joint to form a closed cavity. The coil frame (21) inside the metal shavings monitoring sensor (20) has a recessed mounting groove (221) for a temperature and pressure monitoring component (30) and a vibration monitoring component (40) on the side wall close to the oil circuit. The temperature and pressure monitoring component (30) and the vibration monitoring component (40) are sequentially embedded in the mounting groove (221).

5. The comprehensive monitoring device for engine lubricating oil temperature and pressure, vibration, and wear debris particle size according to claim 4, characterized in that, The first coil (31), the elastic insulator (32), the second coil (33), the counterweight block (42) and the third coil (41) are stacked from bottom to top in the mounting groove (221); wherein, the second coil (33) is fixed on the inner side wall of the mounting groove (221), the first coil (31) and the elastic insulator (32) float up and down relative to each other as the lubricating oil changes, and the third coil (41) and the counterweight block (42) vibrate synchronously with the vibration of the sensor.

6. The comprehensive monitoring device for engine lubricating oil temperature and pressure, vibration, and wear debris particle size according to claim 4, characterized in that, The housing of the metal shavings monitoring sensor (20) is provided with an oil contact port corresponding to the groove of the mounting groove (221). The first coil (31) contacts the oil through the oil contact port, and the elastic insulator (32) is sealed at the upper end of the first coil (31).

7. The comprehensive monitoring device for engine lubricating oil temperature and pressure, vibration, and wear debris particle size according to claim 6, characterized in that, A sealing component is provided at the lubricating oil contact port.

8. The comprehensive monitoring device for engine lubricating oil temperature and pressure, vibration, and wear debris particle size according to claim 1, characterized in that, The first coil (31), the second coil (33), and the third coil (41) have the same number of turns. The first coil (31) and the third coil (41) are wound in the same direction and are respectively opposite to the winding direction of the second coil (33).

9. The comprehensive monitoring device for engine lubricating oil temperature and pressure, vibration, and wear debris particle size according to claim 1, characterized in that, The metal shavings monitoring sensor (20) is also provided with a permanent magnet at its rear end, which adsorbs ferromagnetic shavings flowing in the lubricating oil.

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