Engine oil seal press

Abstract

The utility model discloses an engine oil seal vehicle belongs to aero-engine maintenance equipment technical field. Engine oil seal vehicle includes the car body, oil tank, pneumatic pressure boost module, vacuum dehydration module, circulating purification module, oil seal oil injection module, heating temperature control module, pipeline system and control panel. The oil tank is located in the car body, the pneumatic pressure boost module, vacuum dehydration module and circulating purification module are connected the oil tank respectively, one end of oil seal oil injection module is connected the oil tank, and the other end is connected engine oil seal mouth, heating temperature control module is located in the oil tank, and the pipeline system is connected the oil tank, pneumatic pressure boost module, vacuum dehydration module, circulating purification module and oil seal oil injection module respectively to deliver gas and oil, and control panel is located on the car body, and control panel is used for controlling each module operation. The utility model provides engine oil seal vehicle high integration, oil liquid treatment effect is good, and the operation is convenient, is applicable to the in -situ oil seal operation of aircraft to aero-engine fuel system and turbine power generation device.

Description

Technical Field

[0001] This utility model belongs to the technical field of aircraft engine maintenance equipment, and in particular relates to an engine oil seal vehicle. Background Technology

[0002] During long-term storage or maintenance, aircraft engines require oil sealing of their fuel systems and turbine generators to prevent internal pipes and components from corroding due to moisture. Current oil sealing equipment for this operation suffers from several technical problems: insufficient oil dehydration and purification capabilities, making it difficult to control the water content below 0.05%, and the oil cleanliness cannot consistently meet the GJB420B-8 standard, affecting the oil seal protection effect; the viscosity of the sealing oil is significantly affected by ambient temperature, with a sharp decrease in fluidity at low temperatures, leading to difficulties in oil delivery and impacting sealing efficiency; poor pressure and flow control accuracy, easily resulting in pressure fluctuations or unstable flow, potentially causing incomplete sealing or damage to engine components due to excessive pressure; and a fragmented equipment structure with low integration, complex pipeline connections between functional modules, cumbersome operation procedures, and insufficient overall mobility, making it unsuitable for field operations. Utility Model Content

[0003] In view of the shortcomings of the related technologies, the purpose of this utility model is to provide an engine oil seal vehicle to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: An engine oil seal vehicle, comprising: Vehicle body; The fuel tank is located inside the vehicle body and is used to store oil seal oil. The pneumatic booster module is connected to the oil tank and is used to provide power for conveying the oil seal oil. Vacuum dehydration module, connected to oil tank, used for dehydrating oil seal oil; The circulating purification module is connected to the oil tank and is used to purify the oil seal oil. The oil seal filling module is connected to the oil tank at one end and to the engine oil seal port at the other end. The oil seal filling module is used to supply oil seal oil to the engine. The heating temperature control module is located inside the oil tank and is used to control the temperature of the oil seal oil. The pipeline system connects the oil tank, pneumatic booster module, vacuum dehydration module, circulation purification module, and oil seal injection module. The pipeline system is used to transport gas and oil. The control panel is located on the vehicle body and is used to control the operation of each module.

[0005] In some embodiments, the piping system includes a gas pipeline and an oil pipeline. The gas pipeline is used to transport gas and is connected to the pneumatic booster module and the oil tank, and the vacuum dehydration module and the oil tank, respectively. The oil pipeline is used to transport oil and is connected to the oil tank and the circulation purification module and the oil seal injection module.

[0006] In some embodiments, the pneumatic booster module includes a first gas-water separator, a nitrogen cylinder, and a multi-stage pressure reducing valve. The first gas-water separator, the nitrogen cylinder, and the multi-stage pressure reducing valve are connected in sequence via gas pipelines, and the multi-stage pressure reducing valve is connected to the oil tank via a gas pipeline to provide power for conveying the oil seal oil.

[0007] In some embodiments, the oil tank is a stainless steel cylindrical structure; the oil tank is equipped with a pressure sensor for monitoring the pressure inside the oil tank; the oil tank is connected to a pneumatic safety valve, which is located on the pneumatic pipeline connecting the multi-stage pressure reducing valve to the oil tank.

[0008] In some embodiments, the vacuum dehydration module includes a vacuum pump and a second gas-water separator, which are connected by a gas pipeline, and the second gas-water separator is connected to an oil tank via a gas pipeline.

[0009] In some embodiments, the oil seal filling module includes an oil filling connector and a first check valve. The oil filling connector is used to connect with the engine oil seal, and the first check valve is located on the oil pipeline connecting the oil tank and the oil filling connector.

[0010] In some embodiments, the circulating purification module includes a circulating oil pump, a second one-way valve, and a multi-stage oil filter. The circulating oil pump, the second one-way valve, and the multi-stage oil filter are connected in sequence through oil pipelines. The circulating oil pump is connected to the oil tank through oil pipelines, and the multi-stage oil filter is connected to the oil tank through oil pipelines.

[0011] In some embodiments, the vehicle body includes a frame, a panel, a maintenance hatch, a hatch door, brakeable casters, and a movable push-pull rod; the panel covers the frame to form a chamber for accommodating an oil tank, a pneumatic booster module, a vacuum dehydration module, a circulation purification module, an oil seal filling module, a heating and temperature control module, and a piping system; the maintenance hatch is detachably mounted on the top of the frame to close the top opening of the chamber; the hatch door is openably mounted on the side of the frame to close the side opening of the chamber; brakeable casters are mounted on the bottom of the frame for moving the vehicle body; and the movable push-pull rod is connected to the side of the frame for pushing the vehicle body to move.

[0012] In some embodiments, the control panel is mounted at an angle above the front of the frame.

[0013] In some embodiments, the heating temperature control module includes a heater and a thermocouple, with the heater located inside the oil tank and the thermocouple electrically connected to the control panel.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. The engine oil seal vehicle provided by this utility model integrates multiple functional modules. Through precise connection of the pipeline system, it realizes the integrated operation of oil seal oil storage, pressurization, dehydration, purification and transportation. The control panel centrally manages each module, simplifies the operation process, improves work efficiency and meets the continuous needs of engine oil seal work.

[0015] 2. The engine oil seal vehicle provided by this utility model adopts a frame and panel combination structure, and is equipped with a detachable maintenance cover, an openable and closable door and moving parts, which facilitates equipment maintenance and transportation; the modules work together to ensure the stability of the oil seal oil, effectively protect the engine fuel system, and enhance the practicality and reliability of the equipment.

[0016] 3. The engine oil seal vehicle provided by this utility model adds the function of dehydration and purification of oil seal oil. After being processed by the oil seal vehicle, the water content of the oil seal oil can be no higher than 0.05%, and the pollution level is better than GJB420B-8. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram illustrating the working principle of one embodiment of the engine oil seal vehicle of this utility model; Figure 2 This is a schematic diagram illustrating the working principle of one embodiment of the engine oil seal vehicle of this utility model; Figure 3 This is a schematic diagram of the structure of one embodiment of the engine oil seal vehicle of this utility model; Figure 4 This is a schematic diagram of the structure of the engine oil seal vehicle according to one embodiment of the present invention, showing the removal of the hatch; Figure 5 This is a schematic diagram showing the removal of the hatch and panel in one embodiment of the engine oil seal vehicle of this utility model. Figure 6 This is a schematic diagram of the structure of the removal panel in one embodiment of the engine oil seal vehicle of this utility model.

[0018] In the picture: 1. Vehicle body; 11. Frame; 12. Panel; 13. Inspection hatch cover; 14. Hatch door; 15. Brake casters; 16. Movable push-pull rod; 2. Fuel tank; 21. Pressure sensor; 22. Pneumatic safety valve; 23. Oil drain connector; 24. Oil filler connector; 25. Oil drain valve; 3. Pneumatic booster module; 31. First air-water separator; 32. Nitrogen cylinder; 33. Multi-stage pressure reducing valve; 34. Air filling connector; 35. First switch; 36. Second switch; 37. Third switch; 38. First air filter; 39. Second air filter; 4. Vacuum degassing 41. Water module; 42. Vacuum pump; 43. Second gas-water separator; 44. Vacuum circuit switch; 45. Third gas filter; 6. Circulation purification module; 51. Circulation oil pump; 52. Second check valve; 53. Multi-stage oil filter; 6. Oil seal filling module; 61. Oil filling connector; 62. First check valve; 63. First reversing valve; 64. Second reversing valve; 65. Sampling valve; 7. Heating temperature control module; 71. Heater; 72. Thermocouple; 8. Piping system; 81. Gas pipeline; 82. Oil pipeline; 9. Control panel; 91. Electrical control box. Detailed Implementation

[0019] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] See appendix Figures 1 to 6This paper presents an illustrative embodiment of the engine oil seal vehicle proposed in this utility model. The engine oil seal vehicle includes a vehicle body 1, an oil tank 2, a pneumatic supercharging module 3, a vacuum dehydration module 4, a circulation purification module 5, an oil seal oil injection module 6, a heating and temperature control module 7, a pipeline system 8, and a control panel 9.

[0023] The oil tank 2 is located inside the vehicle body 1 and is used to store oil seal oil. The pneumatic booster module 3 is connected to the oil tank 2 and is used to provide power for conveying the oil seal oil. The vacuum dehydration module 4 is connected to the oil tank 2 and is used to dehydrate the oil seal oil. The circulation purification module 5 is connected to the oil tank 2 and is used to purify the oil seal oil. The oil seal filling module 6 is connected to the oil tank 2 at one end and to the engine oil seal port at the other end and is used to deliver oil seal oil to the engine. The heating and temperature control module 7 is located inside the oil tank 2 and is used to control the temperature of the oil seal oil. The pipeline system 8 is connected to the oil tank 2, the pneumatic booster module 3, the vacuum dehydration module 4, the circulation purification module 5, and the oil seal filling module 6 respectively and is used to transport gas and oil. The control panel 9 is located on the vehicle body 1 and is used to control the operation of each module.

[0024] Piping system 8 includes gas pipeline 81 and oil pipeline 82, see appendix. Figure 1 In the diagram, the blue line represents gas pipeline 81, and the red line represents oil pipeline 82. Gas pipeline 81 is used to transport gas, and it connects to the pneumatic booster module 3 and the oil tank 2, as well as the vacuum dehydration module 4 and the oil tank 2. Oil pipeline 82 is used to transport oil, and it connects to the oil tank 2, the circulation purification module 5, and the oil seal filling module 6. In this embodiment, the pipeline system 8 adopts a convenient and reliable compression fitting connection method.

[0025] The pneumatic booster module 3 includes a first gas-water separator 31, a nitrogen cylinder 32, and a multi-stage pressure reducing valve 33. The first gas-water separator 31, the nitrogen cylinder 32, and the multi-stage pressure reducing valve 33 are connected in sequence through a gas pipeline 81, and the multi-stage pressure reducing valve 33 is connected to the oil tank 2 through the gas pipeline 81 to provide power for conveying the oil seal oil.

[0026] In this embodiment, the pneumatic booster module 3 further includes an inflation connector 34, a first switch 35, a second switch 36, a third switch 37, a first air filter 38, and a second air filter 39. The inflation connector 34 connects to an external air source. The first switch 35 is used to open and close the inflation connector 34. The second switch 36 is used to open and close the nitrogen cylinder 32. The third switch 37 is used to control the power supply of the oil seal oil. The first air filter 38 is located between the first gas-water separator 31 and the nitrogen cylinder 32 to filter and purify the gas entering the nitrogen cylinder 32, removing solid impurities, moisture, oil, and other contaminants. The second air filter 39 is located between the nitrogen cylinder 32 and the multi-stage pressure reducing valve 33 to further prevent impurities from entering the pressure reducing valve and other precision pneumatic components, avoiding wear, blockage, or sealing failure, and ensuring the stability and reliable operation of the pneumatic booster module 3. In addition, the first air filter 38 and the second air filter 39 can reduce the amount of contaminants that enter the oil tank with the gas and come into contact with the oil seal oil, thereby indirectly maintaining the cleanliness of the oil and laying the foundation for vacuum dehydration, circulation purification and other processes, ensuring that the quality of the oil seal oil meets the requirements of engine oil seal operation.

[0027] Oil tank 2 is a stainless steel cylindrical structure, possessing both excellent pressure resistance and sealing performance, suitable for its working requirements as a pressure vessel. Furthermore, the stainless steel material is corrosion-resistant, extending the service life of oil tank 2. Oil tank 2 is equipped with a pressure sensor 21, which monitors the internal pressure. Oil tank 2 is connected to a pneumatic safety valve 22, located on the pneumatic pipeline connecting the multi-stage pressure reducing valve 33 to oil tank 2. The pressure sensor 21 monitors the internal pressure in real time, forming a dual protection system with the pneumatic safety valve 22. This system can promptly respond to overpressure risks, preventing damage to the equipment from abnormal pressure and ensuring safe and stable oil sealing operations.

[0028] The oil tank 2 also has an oil drain connector 23, an oil filler connector 24, and an oil drain valve 25. The oil drain connector 23 is connected to the oil tank 2 through the oil drain valve 25. When the oil needs to be changed, the oil drain valve 25 is opened to drain the oil. The oil filler connector 24 is connected to the oil tank 2 through the first reversing valve 63. When the oil needs to be changed, the first reversing valve 63 is used to fill the oil.

[0029] The vacuum dehydration module 4 includes a vacuum pump 41 and a second gas-water separator 42. The vacuum pump 41 and the second gas-water separator 42 are connected through a gas pipeline 81, and the second gas-water separator 42 is connected to the oil tank 2 through the gas pipeline 81.

[0030] In this embodiment, the vacuum dehydration module 4 further includes a vacuum circuit switch 43 and a third gas filter 44. The vacuum circuit switch 43 is used to open and close the gas pipeline 81 connecting the vacuum pump 41 and the oil tank 2, and the third gas filter 44 filters and purifies the gas.

[0031] The oil seal filling module 6 includes an oil filling connector 61 and a first one-way valve 62. The oil filling connector 61 is used to connect with the engine oil seal port, and the first one-way valve 62 is located on the oil pipeline 82 connecting the oil tank 2 and the oil filling connector 61.

[0032] The circulating purification module 5 includes a circulating oil pump 51, a second one-way valve 52, and a multi-stage oil filter 53. The circulating oil pump 51, the second one-way valve 52, and the multi-stage oil filter 53 are connected in sequence through an oil pipeline 82. The circulating oil pump 51 is connected to the oil tank 2 through the oil pipeline 82, and the multi-stage oil filter 53 is connected to the oil tank 2 through the oil pipeline 82.

[0033] In this embodiment, the circulation purification module 5 and the oil seal injection module 6 are connected via a first reversing valve 63 and a second reversing valve 64, switching the oil circuit direction according to oil supply or circulation requirements. The inlet of the first reversing valve 63 is connected to the oil tank 2, the first outlet of the first reversing valve 63 is connected to the circulating oil pump 51, and the second outlet of the first reversing valve 63 is connected to the first check valve 62. The inlet of the second reversing valve 64 is connected to the multi-stage oil filter 53, the first outlet of the second reversing valve 64 is connected to the oil tank 2, and the second outlet of the second reversing valve 64 is connected to the injection connector 61.

[0034] The oil seal filling module 6 also includes a sampling valve 65, which is located on the oil pipeline 82 between the multi-stage oil filter 53 and the second reversing valve 64. This allows operators to take samples and test them at any time during oil circulation or filling, quickly determine whether the oil purification effect and contamination level meet the standards, promptly detect abnormalities in the oil treatment process, ensure that the quality of the oil seal oil entering the engine meets the standards, reduce the risk of engine damage caused by oil problems, and improve the reliability of oil seal operation.

[0035] The vehicle body 1 includes a frame 11, a panel 12, a maintenance hatch 13, a hatch 14, brakeable casters 15, and a movable push-pull rod 16. The panel 12 covers the frame 11 to form a chamber for accommodating the oil tank 2, the pneumatic pressurization module 3, the vacuum dehydration module 4, the circulation purification module 5, the oil seal filling module 6, the heating and temperature control module 7, and the piping system 8. The positions of each module within the chamber can be reasonably arranged according to actual conditions. The maintenance hatch 13 is detachably mounted on the top of the frame 11 to close the top opening of the chamber; the hatch 14 is openable and closable mounted on the side of the frame 11 to close the side opening of the chamber; the brakeable casters 15 are mounted on the bottom of the frame 11 for moving the vehicle body 1; and the movable push-pull rod 16 is connected to the side of the frame 11 for pushing the vehicle body 1 to move.

[0036] The control panel 9 is installed at an angle on the upper front of the frame 11. It is ergonomically designed so that operators can clearly observe the display information and easily operate the switches and adjustment components while standing or bending over. This reduces visual fatigue and range of motion during operation, improves operational efficiency and comfort, and is especially suitable for the rapid operation needs in mobile operation scenarios.

[0037] The heating temperature control module 7 includes a heater 71 and a thermocouple 72. The heater 71 is located inside the oil tank 2, and the thermocouple 72 is electrically connected to the control panel 9. The control panel 9 is electrically connected to the electrical control box 91, which is integrated into the cavity of the vehicle body 1. The electrical control box 91 receives the temperature signal transmitted by the thermocouple 72 and controls the start and stop of the heater 71 to achieve precise regulation of the oil seal oil temperature in the oil tank 2.

[0038] In the above illustrative embodiment, the engine oil seal vehicle integrates multiple functional modules, which are precisely connected through a pipeline system to realize the integrated operation of oil seal oil storage, pressurization, dehydration, purification and transportation. The control panel centrally manages each module, simplifies the operation process, improves work efficiency and meets the continuous needs of engine oil seal work.

[0039] The following is in conjunction with the appendix Figures 1 to 6 The working process of one embodiment of the engine oil seal vehicle of this utility model will be described as follows: Preparation phase: Check the oil level in oil tank 2 and replenish the oil to the specified level through the filling connector 24 and the first reversing valve 63. Confirm that the nitrogen cylinder 32 has sufficient pressure. If it is insufficient, connect an external gas source through the filling connector 34, open the first switch 35 and the second switch 36, and the gas enters the nitrogen cylinder 32 after passing through the first gas-water separator 31 to remove water and the first gas filter 38 to complete the filling. Connect the power supply, turn on the control panel 9 and the electrical control box 91, and set the heating temperature according to the operation requirements through the display controller (60℃~80℃ for the vacuum dehydration stage, and 45℃~65℃ for the circulation purification and oil filling stage). The heater 71 starts, and the thermocouple 72 monitors the oil temperature in real time and feeds it back to the electrical control box 91 to achieve precise temperature control.

[0040] Vacuum dehydration operation: Once the oil temperature reaches the set range, turn on the vacuum circuit switch 43, and the vacuum dehydration module 4 starts: the vacuum pump 41 runs, creating negative pressure in the oil tank 2 through the gas pipeline 81. Water in the oil evaporates into vapor, which enters the third air filter 44 through the gas pipeline 81 to filter impurities. After passing through the second gas-water separator 42 for gas-water separation, the vapor is discharged by the vacuum pump 41. Dehydration continues until the oil water content reaches the standard (this can be determined by sampling and testing). Then, turn off the vacuum circuit switch 43 and the vacuum pump 41.

[0041] Circulating purification operation: Switch the first directional valve 63 to the circulation position and start the circulation purification module 5: the circulation oil pump 51 runs, and the oil in the oil tank 2 enters the second check valve 52 (to prevent backflow) through the oil pipeline 82, flows through the multi-stage oil filter 53 to remove impurities, and the filtered oil flows back to the oil tank 2 through the second directional valve 64 (which is now in the circulation position), forming a closed-loop circulation. During this period, samples can be taken periodically through the sampling valve 65 to check whether the oil contamination level meets the GJB420B-8 standard. Once the standard is met, the circulation oil pump 51 is turned off.

[0042] Pneumatic booster and oil filling operations: Connect the oil filling connector 61 to the engine oil seal port, close the circulation-related valves, and switch the first reversing valve 63 and the second reversing valve 64 to the oil filling position. Open the second switch 36 and the third switch 37. The gas in the nitrogen cylinder 32 is filtered again by the second air filter 39 and then enters the multi-stage pressure reducing valve 33, which gradually reduces the pressure to the set value (adjusted by the adjustable pressure reducing valve on the control panel 9). The reduced nitrogen gas enters the oil tank 2 through the gas pipeline 81, pushing the oil through the oil pipeline 82 into the oil seal filling module 6. The oil is injected into the engine fuel system through the first one-way valve 62 (to prevent backflow of oil from the engine side) and the oil filling connector 61. As the engine runs cold, the fuel is squeezed out, completing the oil seal. The pressure sensor 21 monitors the oil tank pressure in real time. If the pressure is too high, the pneumatic safety valve 22 automatically relieves the pressure to ensure operational safety.

[0043] Work completed and reset: After oil filling is complete, close the second switch 36 and the third switch 37, switch the first reversing valve 63 and the second reversing valve 64 to the cut-off position, and open the vent switch to release the residual air pressure in the oil tank 2. Disconnect the oil filling connector 61 from the engine, open the drain valve 25 (if oil needs to be replaced), and drain the remaining oil through the drain connector 23. Turn off the control panel 9 and power, clean the pipe interfaces, cover the maintenance hatch cover 13 and the hatch door 14, and use the brakeable casters 15 and the movable push-pull rod 16 to move the equipment to the storage position.

[0044] The entire process is controlled centrally through the control panel, which coordinates the operation of each module. By combining mechanical valves and electrical control logic, the process is automated, ensuring the quality of the oil seal oil and improving the ease of operation, thus meeting the needs of high-efficiency operation.

[0045] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0046] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. An engine oil seal vehicle, characterized in that, include: Vehicle body; A fuel tank, located inside the vehicle body, is used to store oil seal oil; A pneumatic booster module is connected to the oil tank and is used to provide power for conveying the oil seal oil. A vacuum dehydration module is connected to the oil tank and is used to dehydrate the oil seal oil. A circulating purification module is connected to the oil tank and is used to purify the oil seal oil. An oil seal filling module, one end of which is connected to the oil tank and the other end of which is connected to the engine oil seal port, is used to supply oil seal oil to the engine; A heating temperature control module is located inside the oil tank and is used to control the temperature of the oil sealing oil. The pipeline system is connected to the oil tank, pneumatic booster module, vacuum dehydration module, circulation purification module and oil seal injection module respectively. The pipeline system is used to transport gas and oil. A control panel is located on the vehicle body and is used to control the operation of each module.

2. The engine oil seal vehicle according to claim 1, characterized in that, The pipeline system includes a gas pipeline and an oil pipeline. The gas pipeline is used to transport gas and is connected to the pneumatic booster module and the oil tank, and the vacuum dehydration module and the oil tank, respectively. The oil pipeline is used to transport oil and is connected to the oil tank, the circulation purification module, and the oil seal injection module.

3. The engine oil seal vehicle according to claim 2, characterized in that, The pneumatic booster module includes a first gas-water separator, a nitrogen cylinder, and a multi-stage pressure reducing valve. The first gas-water separator, the nitrogen cylinder, and the multi-stage pressure reducing valve are connected in sequence through gas pipelines, and the multi-stage pressure reducing valve is connected to the oil tank through a gas pipeline to provide power for conveying the oil seal oil.

4. The engine oil seal vehicle according to claim 3, characterized in that, The oil tank is a stainless steel cylindrical structure; the oil tank is equipped with a pressure sensor, which is used to monitor the pressure inside the oil tank; the oil tank is connected to a pneumatic safety valve, which is located on the pneumatic pipeline connecting the multi-stage pressure reducing valve to the oil tank.

5. The engine oil seal vehicle according to claim 2, characterized in that, The vacuum dehydration module includes a vacuum pump and a second gas-water separator. The vacuum pump and the second gas-water separator are connected by a gas pipeline, and the second gas-water separator is connected to the oil tank through a gas pipeline.

6. The engine oil seal vehicle according to claim 2, characterized in that, The oil seal injection module includes an injection connector and a first one-way valve. The injection connector is used to connect with the engine oil seal, and the first one-way valve is located on the oil pipeline connecting the oil tank and the injection connector.

7. The engine oil seal vehicle according to claim 2, characterized in that, The circulating purification module includes a circulating oil pump, a second one-way valve, and a multi-stage oil filter. The circulating oil pump, the second one-way valve, and the multi-stage oil filter are connected in sequence through oil pipelines. The circulating oil pump is connected to the oil tank through oil pipelines, and the multi-stage oil filter is connected to the oil tank through oil pipelines.

8. The engine oil seal vehicle according to claim 1, characterized in that, The vehicle body includes a frame, a panel, a maintenance hatch cover, a hatch door, brakeable casters, and a movable push-pull rod. The panel covers the frame to form a chamber for accommodating the oil tank, pneumatic booster module, vacuum dehydration module, circulation purification module, oil seal filling module, heating and temperature control module, and piping system. The maintenance hatch cover is detachably mounted on the top of the frame to close the top opening of the chamber. The hatch door is openable and closable on the side of the frame to close the side opening of the chamber. The brakeable casters are mounted on the bottom of the frame for moving the vehicle body. The movable push-pull rod is connected to the side of the frame for pushing the vehicle body to move.

9. The engine oil seal vehicle according to claim 8, characterized in that, The control panel is mounted at an angle on the front and top of the frame.

10. The engine oil seal vehicle according to claim 1, characterized in that, The heating temperature control module includes a heater and a thermocouple. The heater is located inside the oil tank, and the thermocouple is electrically connected to the control panel.

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