Aviation lubricating oil filtering quantitative oil injection and suction device

Abstract

The utility model discloses an aviation lubricating oil filtering and quantitative oil injection and suction device which mainly comprises an oil tank system, a filtering / oil suction system and an oil injection system. The oil tank system is mainly composed of an oil tank, a partition plate, a first liquid level sensor and a second liquid level sensor. The filtering / oil absorbing system mainly comprises a filtering / oil absorbing electromagnetic valve, a first hydraulic pump, a first one-way valve, a filter element and a first pressure gauge; the oil injection system is mainly composed of a second hydraulic pump, a second one-way valve, a second pressure gauge, a flow meter and an oil gun. The oiling device can meet the oiling requirement of an oil level calibration test, is high in efficiency and precision, and ensures that the cleanliness of provided lubricating oil meets the standard requirement.

Description

Technical Field

[0001] This utility model belongs to the technical field of quantitative filling equipment for aircraft engine lubricating oil tanks, specifically a quantitative filling device for aircraft engine accessory lubricating oil tanks. Background Technology

[0002] As a lubricant for aircraft engines, the cleanliness and precision of aviation lubricating oil play a decisive role in the performance, lifespan, and reliability of the aircraft. An oil filtration and filling device that ensures both cleanliness and filling accuracy can not only efficiently remove various impurities from the lubricating oil, ensuring its cleanliness meets stringent usage standards, but also enable precise filling operations, providing a solid guarantee for the stable operation of aircraft engines.

[0003] For example, the lubricating oil cleanliness requirement of an aircraft engine is to reach level D8E8F5 or above of the GJB420B-2006 standard. When the lubricating oil tank of this aircraft engine needs to be calibrated during production, oil needs to be added into the tank one liter at a time, and the capacitance value of the sensor is recorded once for each liter of oil added, until the specified volume is reached. Each lubricating oil tank product needs to undergo the oil level calibration test three times.

[0004] The traditional method for oil level calibration involves an operator filling a measuring cup with 1 liter of lubricating oil, controlling the filling accuracy visually. The oil is then poured into the oil tank, and the sensor capacitance value is recorded. This process is repeated until the test is complete. After the test, the oil in the tank is manually poured into an oil drum, and the oil in the drum is reused for further testing.

[0005] The above refueling method has three drawbacks: first, the refueling accuracy is low; second, the refueling efficiency is low; and third, the cleanliness of the oil cannot be controlled. These drawbacks result in low efficiency of oil level calibration tests, and the oil tank cannot meet the cleanliness level requirements of aero-engines.

[0006] Currently, the quantitative refueling machines on the market do not have the function of circulating and filtering oil, nor do they have the function of sucking back oil. They only have the function of quantitative refueling, which cannot meet the technical requirements of the oil level calibration test of the lubricating oil tank of aircraft engines. Summary of the Invention

[0007] The present invention aims to provide an aviation lubricating oil filtration and quantitative oil injection and suction device, which can meet the refueling requirements of oil level calibration test, with high efficiency and high precision, and ensure that the cleanliness of the supplied lubricating oil meets the standard requirements.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] The lubricating oil filtration and metering oil injection / suction device includes an oil tank system, a filtration / suction system, and an oil injection system, wherein:

[0010] The oil tank system mainly consists of an oil tank, a partition, a first liquid level sensor, and a second liquid level sensor. The partition is placed inside the oil tank and divides the oil tank into two parts: a clean chamber and a filter chamber. The first liquid level sensor is installed in the filter chamber, and the second liquid level sensor is installed in the clean chamber.

[0011] The filtration / oil suction system mainly consists of a filtration / oil suction solenoid valve, a first hydraulic pump, a first check valve, a filter element, and a first pressure gauge, wherein:

[0012] The filter / suction solenoid valve is a two-position three-way valve. Its first inlet port is connected to the chamber to be filtered through the oil inlet pipe, its second inlet port is connected to the oil injection system through the suction pipe, and its outlet port is connected to the clean chamber through the return pipe. The return pipe is connected in sequence to the first hydraulic pump, the first check valve, the filter element and the first pressure gauge.

[0013] The oil injection system mainly consists of a second hydraulic pump, a second check valve, a second pressure gauge, a flow meter, and an oil filling nozzle, wherein:

[0014] The inlet of the second hydraulic pump is connected to the clean chamber, and the outlet of the second hydraulic pump is connected to the oil filling gun after passing through the second check valve, the second pressure gauge, and the flow meter in sequence. The inlet of the flow meter is connected to the oil suction pipeline.

[0015] As an alternative, the lubricating oil filter metering oil injection and suction device also includes a first overflow valve, the oil inlet of which is connected to the clean chamber, and its oil outlet is connected between the outlet of the first one-way valve and the inlet of the filter element.

[0016] Alternatively, the lubricating oil filter metering injection and suction device also includes a second overflow valve, the oil inlet of which is connected to the clean chamber, and its oil outlet is connected between the outlet of the second check valve and the inlet of the flow meter.

[0017] As an alternative, the lubricating oil filter metering injection and suction device also includes a first motor and a second motor. The first motor is connected to the first hydraulic pump and serves as the driving power source, and the second motor is connected to the second hydraulic pump and serves as the driving power source.

[0018] Alternatively, the filter element has a filtration accuracy that meets or exceeds the D8E8F5 level in GJB420B-2006.

[0019] Alternatively, the second hydraulic pump is a metering pump.

[0020] Compared with existing technologies, the lubricating oil filtration and quantitative oil injection / suction device of this utility model mainly consists of a filtration system, an oil suction system, an oil injection system, and an oil tank system. These systems cooperate to complete the functions of lubricating oil filtration, injection, and suction.

[0021] Oil tank system: The main function of the oil tank system is to store lubricating oil. The oil tank is divided into a clean chamber and a filter chamber. Used lubricating oil is stored in the filter chamber, and filtered oil is stored in the clean chamber to ensure that the cleanliness of the lubricating oil to be added meets the set standards.

[0022] Filtration system: The lubricating oil enters the filter from the filter chamber of the oil tank through the hydraulic pump and check valve. The filtered hydraulic oil enters the clean chamber of the oil tank for filling, ensuring that the cleanliness of the lubricating oil to be added meets the set standard.

[0023] Oil suction system: Lubricating oil enters the filter from the product oil tank through the hydraulic pump and check valve. The filtered lubricating oil enters the clean chamber of the oil tank for refilling. The lubricating oil sucked back is also filtered through the filter element to ensure that the cleanliness of the lubricating oil to be added meets the set standard.

[0024] Oil filling system: Filtered clean lubricating oil is delivered to the filling pipeline by a metering pump through a check valve, and the lubricating oil is accurately filled by a metering filler; the operator can adjust the parameters on the metering filler panel to achieve quantitative control.

[0025] The filtration / oil suction system and the oil injection system of this invention are each equipped with an overflow valve, which plays a role in stabilizing the pressure of the liquid circuit and improving the accuracy of oiling. Attached Figure Description

[0026] Figure 1 This is a hydraulic schematic diagram of the lubricating oil filtration metering oil injection and suction device of this utility model;

[0027] In the diagram: 1. Oil tank system, 2. Filtration / suction system, 3. Oil injection system, 4. Oil tank, 5. Baffle, 6. First liquid level sensor, 7. Second liquid level sensor, 8. Filtration / suction solenoid valve, 9. First hydraulic pump, 10. First motor, 11. First check valve, 12. First relief valve, 13. Filter element, 14. First pressure gauge, 15. Second motor, 16. Second hydraulic pump, 17. Second check valve, 18. Second relief valve, 19. Second pressure gauge, 20. Flow meter, 21. Oil filling nozzle, 22. Oil tank of the product being injected. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. However, it should not be construed that the scope of the subject matter of the present invention is limited to the following embodiments. Any modifications, substitutions and alterations made based on ordinary technical knowledge and conventional means in the art without departing from the above-described technical concept of the present invention are included within the scope of the present invention.

[0029] In traditional oil level calibration tests, oil is added manually using a measuring cup, with the accuracy controlled visually. This results in inconsistent and inaccurate oil levels. Before adding oil, the lubricating oil is stored in an open container, exposed to the environment. Dust and impurities from the environment fall into the container, accumulating over time and failing to meet cleanliness requirements. Because the oil is not circulated and filtered, its cleanliness cannot meet requirements after long-term use. After the test, the oil must be manually poured into the container; there is no automatic oil suction device, leading to low efficiency and easy spillage. To address these technical problems, this invention designs a lubricating oil filtration, quantitative oil injection, and suction device.

[0030] See Figure 1 As shown, the lubricating oil filtration metering oil injection and suction device consists of three main parts: oil tank system 1, filtration / suction system 2, and oil injection system 3.

[0031] like Figure 1 As shown, the oil tank system 1 consists of an oil tank 4, a partition 5, a first liquid level sensor 6, and a second liquid level sensor 7. The partition 5 divides the oil tank 4 into two parts: a clean chamber and a filter chamber. The first liquid level sensor 6 is located in the filter chamber, and the second liquid level sensor 7 is located in the clean chamber. The first liquid level sensor 6 and the second liquid level sensor 7 are used to monitor the liquid level status of the clean chamber and the filter chamber in the oil tank 4.

[0032] See Figure 1 The filtration / suction system 2 consists of a filtration / suction solenoid valve 8 (two-position three-way), a first hydraulic pump 9, a first motor 10, a first check valve 11, a first relief valve 12, a filter element 13, a first pressure gauge 14, etc.

[0033] See Figure 1 The filtration function of the filtration / suction system 2 is achieved as follows: the filtration / suction solenoid valve 8 opens the filtration switch, the first motor 10 is powered on and starts, driving the first hydraulic pump 9 to work and begin filtering the lubricating oil. The lubricating oil flows from the filter chamber of the oil tank 4 through the oil pipe, passing through the filtration / suction solenoid valve 8, the first hydraulic pump 9, and the first check valve 11 in sequence. After being filtered by the filter element 13, it becomes clean lubricating oil and flows into the clean chamber of the oil tank 4, ready for use when adding oil. The filter element 13 uses a high-precision filter element to ensure that the filtered lubricating oil reaches or exceeds the D8E8F5 level of the GJB420B-2006 standard.

[0034] See Figure 1The oil suction function of the filtration / suction system 2 is achieved as follows: when the filtration / suction solenoid valve 8 opens the suction switch, the first motor 10 is energized and starts, driving the first hydraulic pump 9 to work and begin the oil suction operation. The lubricating oil is sucked from the oil tank 22 of the product being injected back to the clean chamber of the oil tank 4. The lubricating oil passes through the oil pipe sequentially through the filling gun 21, the flow meter 20, the filtration / suction solenoid valve 8, the first hydraulic pump 9, and the first check valve 11. After being filtered by the filter element 13, it becomes clean lubricating oil and flows into the clean chamber of the oil tank 4, ready for use when refueling. The oil sucked back during the oil suction process is also filtered to become clean lubricating oil, ensuring the cleanliness of the oil. The nozzle of the filling gun 21 can be fitted with a quick connector that matches the product nozzle. The filling gun 21 can be used as both an oil injection connector and an oil suction connector, facilitating the connection between the device and the product being injected. The filling gun 21 is equipped with a start / stop button, allowing the operator to easily control the start and stop of the refueling process.

[0035] See Figure 1 The oil injection system 3 consists of a second motor 15, a second hydraulic pump 16, a second check valve 17, a second relief valve 18, a second pressure gauge 19, a flow meter 20, an oil gun 21, and an oil tank 22 for the product being injected.

[0036] See Figure 1 The oil injection system 3 achieves its oil injection function in the following way: After the second motor 15 is powered on and started, it drives the second hydraulic pump 16 to work and start the oil injection work. The lubricating oil is added from the clean chamber of the oil tank 4 to the oil tank 22 of the product being injected. The lubricating oil passes through the oil pipe in sequence through the second hydraulic pump 16, the second check valve 17, and the flow meter 20. The clean lubricating oil is then added to the oil tank 22 of the product being injected through the oil gun 21 to complete the oil injection work. The second hydraulic pump 16 is a high-precision metering pump, which can accurately and quantitatively add lubricating oil according to the flow data and oil injection data of the metering pump set on the interface.

[0037] See Figure 1 The first motor 10 and the second motor 15 are 220V electric motors as power sources. The power is transmitted to the gear hydraulic pump through the coupling device to provide stable power support for the operation of the device.

[0038] See Figure 1 The lubricating oil filtration and quantitative oil injection and suction device works together through the oil tank system 1, the filtration / suction system 2, and the oil injection system 3 to complete the functions of lubricating oil filtration, injection, and suction.

[0039] The above embodiments are not intended to limit the scope of protection of this utility model. Any modifications, alterations or equivalent substitutions made based on the technical solutions of this utility model shall fall within the scope of protection of this utility model.

Claims

1. An aircraft lubricating oil filtering, dosing and suction device, characterized in that: The oil tank system (1), the filtering / oil suction system (2) and the oil injection system (3) are provided, wherein: The oil tank system (1) mainly comprises an oil tank (4), a partition plate (5), a first liquid level sensor (6) and a second liquid level sensor (7), the partition plate (5) is arranged in the oil tank (4) and divides the oil tank (4) into a clean cavity and a filtering cavity, the first liquid level sensor (6) is arranged in the filtering cavity, and the second liquid level sensor (7) is arranged in the clean cavity. The filtering / oil suction system (2) mainly comprises a filtering / oil suction electromagnetic valve (8), a first hydraulic pump (9), a first check valve (11), a filter element (13) and a first pressure gauge (14), wherein: The filtering / oil suction electromagnetic valve (8) is a two-position three-way valve, a first liquid inlet of the filtering / oil suction electromagnetic valve (8) is connected with the filtering cavity through an oil inlet pipeline, a second liquid inlet of the filtering / oil suction electromagnetic valve (8) is connected with the oil injection system (3) through an oil suction pipeline, and a liquid outlet of the filtering / oil suction electromagnetic valve (8) is connected to the clean cavity through an oil return pipeline, the oil return pipeline is sequentially connected with the first hydraulic pump (9), the first check valve (11), the filter element (13) and the first pressure gauge (14); The oil injection system (3) mainly comprises a second hydraulic pump (16), a second check valve (17), a second pressure gauge (19), a flow meter (20) and an oil gun (21), wherein: An inlet of the second hydraulic pump (16) is connected with the clean cavity, an outlet of the second hydraulic pump (16) is sequentially connected with the oil gun (21) through the second check valve (17), the second pressure gauge (19) and the flow meter (20), and an inlet of the flow meter (20) is connected with the oil suction pipeline.

2. The aircraft oil filter dosing and suction device of claim 1, wherein: A first overflow valve (12) is further provided, an oil inlet of the first overflow valve (12) is connected with the clean cavity, and an oil outlet of the first overflow valve (12) is connected between an outlet of the first check valve (11) and an inlet of the filter element (13).

3. The aircraft oil filter dosing and suction device of claim 1, wherein: A second overflow valve (18) is further provided, an oil inlet of the second overflow valve (18) is connected with the clean cavity, and an oil outlet of the second overflow valve (18) is connected between an outlet of the second check valve (17) and an inlet of the flow meter (20).

4. The aircraft oil filter dosing and suction device of claim 1, wherein: A first motor (10) and a second motor (15) are further provided, the first motor (10) is connected with the first hydraulic pump (9) and serves as a driving power source, and the second motor (15) is connected with the second hydraulic pump (16) and serves as a driving power source.

5. The aircraft oil filter dosing and suction device of claim 1, wherein: The filter element (13) has a filtering precision meeting the D8E8F5 level or above in GJB420B-2006.

6. An aircraft oil filter dosing and suction device according to claim 1, characterized in that: The second hydraulic pump (16) is a metering pump.

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