An emergency oil supply and lubrication system and method for an aircraft test instrument

Abstract

This invention provides an emergency lubrication system and method for an aircraft testing instrument. The system includes an oil circuit unit, an air circuit unit, a filtration unit, and a measurement unit. The oil circuit unit stores oil and provides lubrication to the object being lubricated. The air circuit unit replenishes oil to the object being lubricated when the oil supply system stops working. The filtration unit filters the oil supply unit to prevent foreign matter from entering the lubrication system. The measurement unit measures the temperature and pressure of the air and oil circuits, monitors the real-time status of the lubricating oil and the oil supply capacity, ensuring that the lubrication capacity meets the system's lubrication requirements. This invention provides backup lubrication capacity for the mechanical system of the testing instrument, unaffected by power problems. It ensures that in the event of a lubrication failure, it will automatically provide lubrication to the entire system, guaranteeing the safety of the mechanical system during deceleration and improving the quality of aircraft product testing.

Description

Technical Field

[0001] This invention belongs to the field of lubrication system design technology for testing instruments, and relates to an emergency oil supply lubrication system and method for aviation testing instruments. Background Technology

[0002] When an aircraft needs to operate at high speed on a ground test vehicle, motors and pumps are used to provide lubrication and cooling for the rotating mechanical parts to ensure the normal operation of critical components such as gears and bearings.

[0003] Currently, no aircraft ground testing equipment is designed with an emergency oil supply and lubrication system. If a power outage or circuit-related fault occurs during the test, the motor and pump set will stop supplying oil instantly, while the mechanical system of the testing equipment will continue to operate due to rotational inertia. During this period, the high-speed bearings and gears will suffer irreversible damage due to lack of lubrication and cooling, resulting in serious losses and failing to meet safety requirements. Summary of the Invention

[0004] To address the problem that existing aircraft ground testing equipment designs lack emergency lubrication systems and fail to meet safety requirements, this invention provides an emergency lubrication system and method for aircraft testing equipment. This system provides backup lubrication capabilities for the mechanical systems of the testing equipment, is unaffected by power issues, and ensures that in the event of a lubrication failure, it will automatically provide lubrication to the entire system, guaranteeing the safety of the mechanical systems during deceleration and improving the quality of aircraft product testing.

[0005] The technical solution of the present invention is as follows: On one hand, an emergency oil supply and lubrication system for an aircraft test instrument includes: an oil circuit unit, an air circuit unit, a filter unit, and a measurement unit; the air circuit unit is connected in series to the oil circuit unit, and the filter unit and the measurement unit are both mounted on the oil circuit unit. The oil circuit unit stores oil and provides lubrication to the object being lubricated; The air circuit unit replenishes the lubricated object with oil in a timely manner when the oil supply system stops working; The filtration unit filters the oil supply unit to prevent foreign matter from entering the lubrication system and ensure the cleanliness of the lubrication. The measuring unit measures the temperature and pressure of the air and oil circuits, monitors the real-time status of the lubricating oil and its supply capacity, and ensures that the lubrication capacity meets the lubrication requirements of the system.

[0006] Optionally, the oil circuit unit includes: an oil tank, a pressure regulating ball valve, a relief valve, an oil supply ball valve, an oil supply pump assembly, and an oil circuit check valve; the oil tank is connected to the oil supply pump assembly through an oil circuit, and the pressure regulating ball valve, the relief valve, the oil supply ball valve, and the oil circuit check valve are installed on the oil circuit to control the oil circuit; The oil tank stores a sufficient amount of oil to ensure the lubrication requirements of the object being lubricated. The pressure regulating ball valve initially controls the initial range of the oil supply and returns excess lubricating oil to the lubricating oil tank. The overflow valve adjusts the pressure of the oil supply and also returns excess lubricating oil to the lubricating oil tank. The oil supply ball valve is installed at the oil outlet of the lubricating oil tank. It is open when in operation and closed when maintenance is performed to prevent lubricating oil leakage. The oil supply pump assembly provides initial kinetic energy to deliver lubricating oil from the oil tank to the object being lubricated.

[0007] The oil circuit check valve prevents oil from flowing back to the lubricating oil tank in emergency situations, ensuring the amount of lubricating oil.

[0008] Optionally, the oil circuit unit further includes a water-cooled heat exchanger connected in the return oil circuit between the measuring product and the lubricating oil tank, used to cool the lubricating oil in the return oil circuit and suppress the rise in lubricating oil temperature.

[0009] Optionally, the pneumatic circuit unit includes: an emergency oil tank and a safety valve, a one-way valve, an air pressure regulating valve, a pneumatic dual unit, an emergency ball valve, and an emergency electrically controlled valve installed on the pneumatic circuit between the compressed air and the emergency oil tank. The safety valve is used to control the upper limit of compressed air pressure, ensuring automatic pressure relief in case of malfunction and guaranteeing equipment safety. The air circuit check valve is used to prevent lubricating oil from the oil supply circuit from rushing into the compressed air source and damaging the equipment, and to ensure one-way air flow in the air circuit. The air pressure regulating valve adjusts the initial air supply pressure to ensure that the air pressure meets the lubrication requirements; The pneumatic dual unit is used to dry and filter compressed air to prevent foreign matter from mixing into the lubricating oil and affecting the cleanliness of the lubricating oil. The emergency ball valve is installed at the oil outlet of the emergency oil tank. It is open when in operation and closed when maintenance is performed to prevent lubricating oil leakage. The emergency electronic control valve adjusts the emergency oil pressure when the emergency device is activated; The emergency oil tank stores enough oil for emergency use to ensure the oil supply required for lubrication in emergency situations.

[0010] Optionally, the filtration unit includes an air filter, an oil suction filter, and an oil supply filter installed on the oil circuit, for controlling the cleanliness of the lubricating oil; The air filter is used to balance the air pressure inside the lubricating oil tank and prevent dust from entering the lubricating oil tank. The oil suction filter is used to filter impurities in the lubricating oil at the oil tank outlet, ensuring the normal operation of oil circuit equipment and instruments; The oil supply filter is used for secondary filtration of lubricating oil to ensure the reliable operation of precision parts within the lubricated object.

[0011] Optionally, the measuring unit includes: a temperature sensor, a magnetic level sensor, a pressure gauge, and a pressure transmitter installed on the oil circuit, for accurately monitoring the lubricating oil level, temperature, and pressure parameters; The temperature sensor measures the temperature of the lubricating oil inside the oil tank to ensure the lubricating properties of the lubricating oil. The magnetic level sensor measures the oil level in the lubricating oil tank to ensure that the amount of lubricating oil meets the lubrication requirements, and at the same time assists in monitoring whether there is any leakage in the lubricating oil during flow; The pressure gauge measures the oil pressure after adjustment by the pressure regulating ball valve, providing a reference for adjusting the initial oil pressure. The pressure transmitter measures the lubricating oil pressure before it enters the object being lubricated, ensuring that the lubrication design requirements of the object are met, so that the lubricating oil pressure can be controlled by the relief valve.

[0012] On the other hand, an emergency oil supply and lubrication method for an emergency oil supply and lubrication system for an aircraft tester as described in any of the first aspects is provided, comprising three stages: oil supply adjustment, oil return treatment, and emergency treatment.

[0013] In the oil supply regulation process, the oil supply pump unit pumps lubricating oil from the oil tank, passes through the oil suction filter and the oil supply ball valve, and after the pressure regulating ball valve is adjusted by the pressure gauge, the overflow valve is electrically adjusted by the pressure transmitter to achieve continuous control of the oil supply pressure. After secondary filtration by the oil supply filter, the oil is pumped into the lubrication object through the oil circuit check valve, thus realizing the oil supply regulation function inside the system. In the oil return process, the oil flows back to the lubricating oil tank by gravity. The water-cooled heat exchanger reduces the oil temperature after lubrication, controlling the lubricating oil temperature in the lubricating oil tank and ensuring lubrication and cooling characteristics. After the lubricating oil flows into the lubricating oil tank, the air filter balances the air pressure inside the lubricating oil tank and prevents dust from entering the lubricating oil tank. The temperature sensor displays the temperature and controls the water flow of the water-cooled heat exchanger, thereby effectively controlling the lubricating oil temperature. The magnetic level sensor measures the oil level in the lubricating oil tank to monitor whether there is any leakage during operation, realizing a closed loop of the internal oil return process of the system. In the emergency response phase, compressed air provides initial kinetic energy. After being filtered and dehumidified by the pneumatic dual unit, the compressed air pressure is regulated by the air pressure regulating valve. The pressure is released through the safety valve, and the air circuit check valve pushes the compressed gas into the emergency oil tank, expelling the lubricating oil inside. The emergency electric control valve controls the emergency lubricating oil pressure in the secondary phase. The emergency lubricating oil then lubricates and cools the object being lubricated via the emergency ball valve, thus realizing the emergency function within the system.

[0014] The beneficial effects of this invention are at least as follows: This invention provides an emergency oil supply and lubrication system for an aircraft testing instrument, achieving precise control of lubricating oil pressure and temperature in the instrument's mechanical system. It also marks the first time that a backup capability has been established for an aircraft testing instrument's lubrication system. In the event of an emergency power outage, the emergency oil supply and lubrication system remains unaffected by the power failure and automatically provides lubrication to the mechanical system, improving operational safety during the instrument's deceleration and shutdown due to mechanical system failure. This can improve the testing quality of aircraft products while reducing cost waste caused by equipment damage during instrument downtime. The main advantages include the following: By combining the pressure regulating ball valve and the relief valve, the oil supply pressure of the lubrication system can be controlled more precisely. The emergency oil tank is pressurized by stored compressed air to avoid being affected by power outages or circuit failures, and can automatically replenish lubricating oil in emergency situations. The air circuit check valve ensures that lubricating oil will not flow into the emergency air circuit under normal operating conditions, ensuring the unidirectional flow of the air circuit. At the same time, the oil circuit check valve ensures that compressed air supplied to lubricating oil will not flow into the oil tank under emergency conditions, ensuring the unidirectional flow of the oil circuit. The continuous adjustability and stability of emergency oil pressure are ensured through the coordinated regulation of the air pressure regulating valve and the emergency solenoid valve. Set the compressed air pressure slightly lower than the lubricating oil pressure under normal operating conditions. This ensures that under normal operating conditions, the compressed air maintains emergency oil pressure but does not participate in lubrication, and the pressure difference is offset by the check valve. In an emergency, the oil supply pump stops working, and the emergency oil pressure automatically replenishes itself by pushing open the check valve due to the lack of counteracting oil pressure, thus ensuring the normal operation of the mechanical system. The pneumatic dual-unit filters impurities and moisture from the air to ensure the cleanliness of the lubricating oil. By using a water-cooled heat exchanger to reduce the oil temperature after lubrication, the lubricating oil temperature in the oil box is controlled, ensuring lubrication and cooling characteristics. By using various sensors such as temperature sensors and pressure transmitters in conjunction with electric control valves, the control of oil pressure and temperature in the lubrication system is ensured, and the response is timely. The lubrication system is thoroughly cleaned by filtration devices such as air filters, suction filters, and supply filters. The oil filter's clogging status can be fed back based on the inlet and outlet pressure difference, allowing for timely replacement. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1A schematic diagram of an emergency oil supply and lubrication system for an aircraft test instrument; Explanation of reference numerals in the attached figures: 1—Oil tank; 2—Air filter; 3—Temperature sensor; 4—Magnetic level sensor; 5—Safety valve; 6—Air check valve; 7—Air pressure regulating valve; 8—Pneumatic dual unit; 9—Pressure regulating ball valve; 10—Relief valve; 11—Suction filter; 12—Insulation ball valve; 13—Insulation pump unit; 14—Pressure gauge; 15—Insulation filter; 16—Oil check valve; 17—Emergency ball valve; 18—Emergency electric control valve; 19—Emergency oil tank; 20—Pressure transmitter; 21—Water-cooled heat exchanger. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] The features and illustrative embodiments of various aspects of the present invention will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention may be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention. The invention is by no means limited to any specific setups and methods set forth below, but covers any improvements, substitutions, and modifications to structures, methods, and devices without departing from the spirit of the invention. Well-known structures and techniques are not shown in the drawings and the following description to avoid unnecessarily obscuring the invention.

[0019] An embodiment of the present invention provides an emergency oil supply and lubrication system for an aircraft test instrument, comprising: an oil circuit unit, an air circuit unit, a filter unit, and a measurement unit; the air circuit unit is connected in series to the oil circuit unit, and the filter unit and the measurement unit are both installed on the oil circuit unit.

[0020] The oil circuit unit is used to store oil and provide lubrication to the object being lubricated. The air circuit unit is used to replenish the lubricated object in a timely manner when the oil supply system stops working; The filter unit is used to filter the oil supply unit to prevent foreign matter from entering the lubrication system and ensure the cleanliness of the lubrication.

[0021] The measuring unit is used to measure parameters such as temperature and pressure in the air and oil circuits, monitor the real-time status of the lubricating oil and its supply capacity, and ensure that the lubrication capacity meets the lubrication requirements of the system.

[0022] In one embodiment, see Figure 1 The oil circuit unit includes: oil tank 1, pressure regulating ball valve 9, overflow valve 10, oil supply ball valve 12, oil supply pump group 13, and oil circuit check valve 16. The oil tank 1 is connected to the oil supply pump group 13 through the oil circuit, and the others are installed on the oil circuit according to the drawing requirements to realize the control of the oil circuit.

[0023] The oil tank 1 stores a sufficient amount of oil to ensure the lubrication requirements of the object being lubricated. The pressure regulating ball valve 9 is connected to the oil tank 1 to initially control the oil supply range, returning excess oil to the oil tank 1. The overflow valve 10 is connected to the oil tank 1 to precisely adjust and control the oil supply pressure, also returning excess oil to the oil tank 1. The oil supply ball valve 12 is installed at the oil outlet of the oil tank 1, opening during operation and closing during maintenance to prevent oil leakage. The oil supply pump unit 13 is connected to the oil supply ball valve 12 to provide initial kinetic energy, delivering oil from the oil tank 1 to the object being lubricated. The oil circuit check valve 16 is connected to the oil supply filter 15 to prevent oil backflow into the oil tank in emergency situations, ensuring sufficient lubrication.

[0024] Furthermore, the oil circuit unit may also include a water-cooled heat exchanger 21, connected to the return oil circuit between the measuring product and the lubricating oil tank, for cooling the lubricating oil in the return oil circuit and suppressing the rise in lubricating oil temperature.

[0025] In one embodiment, see Figure 1 The pneumatic circuit unit may include: a safety valve 5, a pneumatic check valve 6, an air pressure regulating valve 7, a pneumatic dual unit 8, an emergency ball valve 17, an emergency electrically controlled valve 18, and an emergency oil tank 19. The safety valve 5, pneumatic check valve 6, air pressure regulating valve 7, pneumatic dual unit 8, emergency ball valve 17, and emergency electrically controlled valve 18 are all installed in the pneumatic circuit between the compressed air and the emergency oil tank 19 as required by the drawings.

[0026] Safety valve 5 is connected to air circuit check valve 6 and emergency oil tank 19 to control the upper limit of compressed air pressure, ensuring automatic pressure relief in case of malfunction and guaranteeing equipment safety. Air circuit check valve 6 is connected to air pressure regulating valve 7 to prevent lubricating oil from entering the compressed air source and damaging the equipment, ensuring unidirectional air flow. Air pressure regulating valve 7 is connected to pneumatic dual unit 8 to adjust the initial air supply pressure, ensuring that the air pressure meets lubrication requirements. Pneumatic dual unit 8 is used to dry and filter compressed air, preventing moisture, dust, and other foreign matter from mixing into the lubricating oil and affecting its cleanliness. Emergency ball valve 17 is installed at the oil outlet of emergency oil tank 19, opening during operation and closing during maintenance to prevent lubricating oil leakage. Emergency electrically controlled valve 18 is located between emergency ball valve 17 and emergency oil tank 19, used to adjust emergency oil pressure when the emergency device is activated. Emergency oil tank 19 stores sufficient emergency oil to ensure the oil quantity requirements of the lubricated object in emergency situations.

[0027] In one embodiment, see Figure 1 The filtration unit may include an air filter 2, an oil suction filter 11, and an oil supply filter 15, all of which are independently installed on the oil circuit according to the drawing requirements, and are used to control the cleanliness of the lubricating oil.

[0028] Air filter 2 is connected to oil tank 1 to balance the air pressure inside oil tank 1 and prevent dust from entering oil tank 1. Suction filter 11 is installed inside oil tank 1 to filter impurities in the lubricating oil at the oil tank outlet, ensuring the normal operation of oil circuit equipment and instruments. Supply filter 15 is located between oil supply pump group 13 and oil circuit check valve 16, and is used for secondary filtration of lubricating oil to ensure the reliable operation of precision parts such as gears and bearings in the lubricated object.

[0029] In one embodiment, see Figure 1 The measuring unit may include: a temperature sensor 3, a magnetic level sensor 4, a pressure gauge 14, and a pressure transmitter 20. Each sensor is independently installed on the oil circuit according to the drawing requirements to achieve accurate monitoring of lubricating oil level, temperature, and pressure parameters.

[0030] Temperature sensor 3 is connected to oil tank 1 to measure the temperature of the lubricating oil inside oil tank 1, ensuring the lubricating characteristics of the lubricating oil. Magnetic level sensor 4 is connected to oil tank 1 to measure the oil level height inside oil tank 1, ensuring the lubricating oil volume meets lubrication requirements, and also assisting in monitoring for oil leakage during flow. Pressure gauge 14 is connected to pressure regulating ball valve 9 to measure the oil pressure after adjustment by pressure regulating ball valve 9, providing a reference for manual adjustment of the initial oil pressure. Pressure transmitter 20 is installed at the inlet end of the object to be lubricated to measure the lubricating oil pressure before entering the object, ensuring that the lubrication design requirements of the object are met, so that the lubricating oil pressure can be accurately controlled by overflow valve 10.

[0031] An emergency oil supply and lubrication system for an aircraft test apparatus according to an embodiment of the present invention can be divided into three parts in terms of overall function: oil supply regulation function, oil return treatment function, and emergency function, to realize the simulation of low-temperature environment testing of aircraft. Details are as follows: Oil supply regulation function: The oil supply function mainly relies on the oil supply pump group 13 to pump lubricating oil from the oil tank 1, which passes through the suction filter 11 and the oil supply ball valve 12. After the pressure regulating ball valve 9 is adjusted by the pressure gauge 14, the overflow valve 10 is electrically adjusted by the pressure transmitter 20 to achieve continuous control of the oil supply pressure. After secondary filtration by the oil supply filter 15, the oil is pumped into the lubrication object through the oil circuit check valve 16, thus realizing the oil supply regulation function inside the system.

[0032] Oil return function: The oil return function mainly relies on gravity to return the oil to the lubricating oil tank 1. The water-cooled heat exchanger 21 reduces the oil temperature that rises after lubrication, controlling the lubricating oil temperature in the lubricating oil tank 1 and ensuring lubrication and cooling characteristics. After the lubricating oil flows into the lubricating oil tank 1, it passes through the air filter 2 to balance the air pressure inside the lubricating oil tank 1 and prevent dust from entering the lubricating oil tank 1. The temperature sensor 3 displays the temperature and controls the water flow rate of the water-cooled heat exchanger 21, thereby effectively controlling the lubricating oil temperature. At the same time, the magnetic liquid level sensor 4 measures the oil level in the lubricating oil tank 1 to monitor whether there is any leakage during operation, realizing a closed loop of the internal oil return function of the system.

[0033] Emergency Function: The emergency function mainly relies on compressed air to provide initial kinetic energy. After being filtered and dehumidified by the pneumatic dual unit 8, the compressed air is regulated by the air pressure regulating valve 7 and depressurized by the safety valve 5 to ensure the safety of the emergency system. The compressed air is then pumped into the emergency oil tank 19 through the air circuit check valve 6, discharging the lubricating oil in the tank. The emergency lubricating oil pressure is controlled secondary by the emergency electric control valve 18, and the emergency ball valve 17 is used to achieve the lubrication and cooling of the lubricated object by the emergency lubricating oil, thus realizing the emergency function inside the system.

[0034] An emergency oil supply and lubrication system for an aircraft testing device, as described in this invention, has been used for the first time on an aircraft ground testing device. This system features a simple structure and strong functionality, achieving precise control of the lubricating oil pressure and temperature in the testing device's mechanical systems, and providing backup lubrication for the aircraft testing device. It automatically provides lubrication to the mechanical systems in the event of an emergency power outage, ensuring the safety of operation during the mechanical system's deceleration and shutdown due to failure, and avoiding cost waste caused by equipment damage. This invention is expected to be widely promoted and utilized in the future.

[0035] The above description merely illustrates embodiments of the present invention and is quite specific and detailed; however, it should not be construed as limiting the scope of the patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Furthermore, any parts of the present invention not described in detail are conventional techniques.

Claims

1. An emergency oil supply and lubrication system for an aircraft test instrument, characterized in that, include: The system comprises an oil circuit unit, an air circuit unit, a filter unit, and a measurement unit; the air circuit unit is connected in series with the oil circuit unit, and the filter unit and measurement unit are both mounted on the oil circuit unit. The oil circuit unit stores oil and provides lubrication to the object being lubricated; The air circuit unit replenishes the lubricated object with oil in a timely manner when the oil supply system stops working; The filtration unit filters the oil supply unit to prevent foreign matter from entering the lubrication system; The measuring unit measures the temperature and pressure of the air and oil circuits, monitors the real-time status of the lubricating oil and its supply capacity, and ensures that the lubrication capacity meets the lubrication requirements of the system.

2. The system according to claim 1, characterized in that, The oil circuit unit includes: an oil tank, a pressure regulating ball valve, a relief valve, a supply ball valve, a supply pump unit, and an oil circuit check valve; the oil tank is connected to the supply pump unit through an oil circuit, and the pressure regulating ball valve, relief valve, supply ball valve, and oil circuit check valve are installed on the oil circuit to control the oil circuit; The oil tank stores a sufficient amount of oil to ensure the lubrication requirements of the object being lubricated. The pressure regulating ball valve initially controls the initial range of the oil supply and returns excess lubricating oil to the lubricating oil tank. The overflow valve adjusts the pressure of the oil supply and also returns excess lubricating oil to the lubricating oil tank. The oil supply ball valve is installed at the oil outlet of the lubricating oil tank. It is open when in operation and closed when maintenance is performed to prevent lubricating oil leakage. The oil supply pump assembly provides initial kinetic energy to deliver lubricating oil from the oil tank to the object being lubricated; The oil circuit check valve prevents oil from flowing back to the lubricating oil tank in emergency situations, ensuring the amount of lubricating oil.

3. The system according to claim 2, characterized in that, The oil circuit unit also includes a water-cooled heat exchanger connected to the return oil line between the measuring product and the lubricating oil tank, used to cool the lubricating oil in the return oil line and suppress the rise in lubricating oil temperature.

4. The system according to claim 1, characterized in that, The pneumatic circuit unit includes: an emergency oil tank and a safety valve, a one-way valve, an air pressure regulating valve, a pneumatic dual unit, an emergency ball valve, and an emergency electric control valve installed on the pneumatic circuit between the compressed air and the emergency oil tank. The safety valve is used to control the upper limit of compressed air pressure, ensuring that it can automatically release pressure in case of malfunction. The air circuit check valve is used to prevent lubricating oil from the oil supply circuit from rushing into the compressed air source and damaging the equipment, and to ensure one-way air flow in the air circuit. The air pressure regulating valve adjusts the initial air supply pressure to ensure that the air pressure meets the lubrication requirements; The pneumatic dual unit is used to dry and filter compressed air to prevent foreign matter from mixing into the lubricating oil. The emergency ball valve is installed at the oil outlet of the emergency oil tank. It is open when in operation and closed when maintenance is performed to prevent lubricating oil leakage. The emergency electronic control valve adjusts the emergency oil pressure when the emergency device is activated; The emergency oil tank stores enough oil for emergency use to ensure the oil supply required for lubrication in emergency situations.

5. The system according to claim 2, characterized in that, The filtration unit includes: an air filter, an oil suction filter, and an oil supply filter installed on the oil circuit; The air filter is used to balance the air pressure inside the lubricating oil tank and prevent dust from entering the lubricating oil tank. The oil suction filter is used to filter impurities in the lubricating oil at the oil tank outlet, ensuring the normal operation of oil circuit equipment and instruments; The oil supply filter is used for secondary filtration of lubricating oil to ensure the reliable operation of precision parts within the lubricated object.

6. The system according to claim 2, characterized in that, The measuring unit includes: a temperature sensor, a magnetic level sensor, a pressure gauge, and a pressure transmitter installed on the oil circuit; The temperature sensor measures the temperature of the lubricating oil inside the lubricating oil tank. The magnetic level sensor measures the oil level in the lubricating oil tank to ensure that the amount of lubricating oil meets the lubrication requirements, and at the same time assists in monitoring whether there is any leakage in the lubricating oil during flow; The pressure gauge measures the oil pressure after adjustment by the pressure regulating ball valve, providing a reference for adjusting the initial oil pressure. The pressure transmitter measures the lubricating oil pressure before it enters the object being lubricated, ensuring that the lubrication design requirements of the object are met, so that the lubricating oil pressure can be controlled by the relief valve.

7. An emergency oil supply and lubrication method for an emergency oil supply and lubrication system of an aircraft test vehicle as described in any one of claims 1 to 6, characterized in that, It includes three stages: oil supply regulation, oil return treatment, and emergency treatment.

8. The method according to claim 7, characterized in that, In the oil supply regulation process, the oil supply pump unit pumps lubricating oil from the oil tank, passes through the oil suction filter and the oil supply ball valve, and after the pressure regulating ball valve is adjusted by the pressure gauge, the overflow valve is electrically adjusted by the pressure transmitter to achieve continuous control of the oil supply pressure. After secondary filtration by the oil supply filter, the oil is pumped into the lubrication object through the oil circuit check valve, thus realizing the oil supply regulation function inside the system. In the oil return process, the oil flows back to the lubricating oil tank by gravity. The water-cooled heat exchanger reduces the oil temperature after lubrication, controls the lubricating oil temperature in the lubricating oil tank, and ensures lubrication and cooling characteristics. After the lubricating oil flows into the lubricating oil tank, the air filter balances the air pressure inside the lubricating oil tank and prevents dust from entering the lubricating oil tank. The temperature sensor displays the temperature and controls the water flow of the water-cooled heat exchanger, thereby controlling the lubricating oil temperature. The magnetic level sensor measures the oil level in the lubricating oil tank to monitor whether there is any leakage during operation, realizing a closed loop of the internal oil return process of the system. In the emergency response phase, compressed air provides initial kinetic energy. After being filtered and dehumidified by the pneumatic dual unit, the compressed air pressure is regulated by the air pressure regulating valve. The pressure is released through the safety valve, and the air circuit check valve pushes the compressed gas into the emergency oil tank, expelling the lubricating oil inside. The emergency electric control valve controls the emergency lubricating oil pressure in the secondary phase. The emergency lubricating oil then lubricates and cools the object being lubricated via the emergency ball valve, thus realizing the emergency function within the system.

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