Anti-splashing self-sealing type lubricating oil filling device

Abstract

The anti-splashing self-sealing type lubricating oil filling device comprises a pull rod vehicle, an adjustable telescopic support and a filling body assembly, the adjustable telescopic support and the filling body assembly are integrated on the pull rod vehicle, the filling body assembly comprises an oil tank and an oil-gas mixing treatment tank, a closed-loop pressure balance system is constructed, and oil splashing is eradicated in cooperation with a gas guide funnel, a gas adjusting ball valve and a directional spray head; the oil tank is provided with a filter screen, a funnel type concave structure and a blow-down ball valve, three-stage impurity prevention and control are formed, the adjustable base is adaptive to different oil injection port heights, and the elastic clamping mechanism guarantees the stability of the vibration working condition. The device can be operated by a single person, has the characteristics of accurate pressure monitoring and early warning and modular disassembly and assembly, meets the filling requirements of equipment such as a coal bed gas supercharger, can improve the operation safety and efficiency, reduces the operation and maintenance cost, and has important engineering application value.

Description

Technical Field

[0001] This invention relates to the field of equipment operation and maintenance technology in coalbed methane development projects, specifically to a splash-proof self-sealing lubricating oil filling device for coalbed methane booster compressors. Background Technology

[0002] In the long-distance storage and transportation of coalbed methane, multi-stage booster compressors are required to ensure coalbed methane transportation efficiency and system operational stability. The crude oil separator, as a core component of the booster compressor, requires regular lubrication to maintain normal operation. According to the coalbed methane booster compressor operation and maintenance specifications, lubrication maintenance must be performed after 167 days of continuous operation. Current operations use a traditional funnel-type lubrication method, requiring manual lubrication at the crude oil separator's oil inlet.

[0003] The existing filling process presents significant safety hazards, equipment damage risks, and high labor costs, making it difficult to meet the stringent requirements of various on-site operations. Specific problems include: First, high-pressure gas easily remains inside the coalbed methane booster and crude oil separator. If the pressure is not completely released before filling, when the lubricating oil level submerges the filling port, the residual gas will be rapidly compressed and ejected instantaneously, causing lubricating oil splashing. The lubricating oil used on-site is often a medium-temperature oil (40-60℃), and the splashing oil can easily cause burns to workers. Furthermore, the splashing oil can contaminate on-site equipment and the environment, increasing subsequent cleanup costs. Second, the on-site environment is complex, and dust, metal shavings, and other impurities can easily mix into the lubricating oil to be filled. The existing funnel-type filling process lacks a filtration system. Impurities, after entering the crude oil separator with the lubricating oil, will then circulate and intrude into core components such as the booster bearings and impellers, leading to wear, jamming, and even irreversible mechanical damage. This severely affects the booster's service life and operational safety, increasing equipment maintenance costs and downtime rates. Third, the existing filling operation requires at least two operators to work together, one to operate the funnel and the other to add lubricating oil. Improper personnel coordination can easily lead to uncontrolled filling speed, further exacerbating safety hazards and equipment risks, while also increasing labor costs and reducing operational efficiency. Summary of the Invention

[0004] To address the technical problems in existing coalbed methane booster compressor lubricating oil filling operations, such as gas ejection causing oil splashing, impurities damaging the equipment, and the need for multiple people to work together, this invention provides a splash-proof self-sealing lubricating oil filling device. This device enables safe operation by a single person, precise interception of impurities, and dynamic pressure balance, improving the safety, efficiency, and equipment protection of the filling operation, and is suitable for the on-site operation and maintenance needs of the plant.

[0005] The technical solution adopted in this invention is: a splash-proof self-sealing lubricating oil filling device, including a pull rod carriage, an adjustable telescopic support mounted on the pull rod carriage, and a filling main component mounted on the adjustable telescopic support; The main filling component includes an oil tank and an oil-gas mixing treatment tank arranged in parallel and fixedly connected. The oil tank is used to store the lubricating oil to be filled, and the oil-gas mixing treatment tank is used to separate and balance the oil and gas generated during the filling process. The top of the oil tank is equipped with a sealing cover structure, which includes a blowout prevention and venting assembly, an oil injection assembly, and a third vent. The blowout prevention and venting assembly includes an air regulating valve and an air guide nozzle, which are used to regulate the air pressure inside the tank. The side wall of the oil tank is provided with a second oil outlet and a second exhaust outlet. The second exhaust outlet and the third exhaust outlet are connected by a gas guide pipe to form a gas circulation channel. The side wall of the oil-gas mixing treatment tank is provided with an oil inlet, a first oil outlet and a first exhaust outlet. The oil inlet is connected to the second oil outlet of the oil tank by a pipeline and is equipped with a control valve to control the delivery of lubricating oil to the oil-gas mixing treatment tank. The first oil outlet is connected to an oil injection hose, and an air guide pipe is installed inside the oil injection hose. One end of the air guide pipe is connected to the first exhaust port of the oil-gas mixing treatment tank, and the other end extends to the outside of the oil injection hose and is connected to the air guide structure to form an oil-gas circulation channel during the filling process.

[0006] Furthermore, the upper part of the oil tank has an opening and a removable sealing cover and a third sealing cover. The left side of the third sealing cover has a vertically penetrating air pressure balance port. The upper part of the air pressure balance port is sealed with a spherical air-guiding nozzle through a sealing threaded joint. The upper part of the spherical air-guiding nozzle is sealed with a spherical air-guiding nozzle through a quick-connect structure. The air volume is adjusted by adjusting the spherical air-guiding nozzle, and the airflow is directed to avoid splashing oil droplets carried by the airflow. At the same time, the filling speed can be adjusted according to the pressure change. The third sealing cover has an oil inlet that runs vertically through the middle. The upper part of the oil inlet is covered by a detachable sealing cover and a fourth sealing cover. The upper part of the fourth sealing cover is sequentially sealed with a ball valve and an electronic pressure gauge. The electronic pressure gauge is connected to the inside of the oil tank to monitor the pressure inside the tank in real time. The lower part of the fourth sealing cover is fixedly installed with a filter screen corresponding to the inner position of the oil inlet. The right side of the third sealing cover has a third exhaust port that runs vertically through it. The upper part of the third exhaust port is sealed to the second air guide pipe through a sealing joint. The outlet of the second air guide pipe is sealed to a high-sensitivity airflow whistle. When the airflow in the coarse oil separator of the booster changes or the pressure is abnormal, the airflow drives the high-sensitivity airflow whistle to sound, thus providing an early warning of abnormal pressure. The lower right side wall of the oil tank is horizontally provided with a second oil outlet and a second exhaust outlet. The third exhaust outlet is sealed to the second exhaust outlet by a second air guide hose. The second air guide hose is an oil-resistant and pressure-resistant hose, and its two ends are locked and sealed by pipe clamps to form a branch of airflow circulation inside the tank. The lower part of the oil tank has a funnel-shaped concave structure, and a drain outlet is opened vertically in the center of the concave part. A drain ball valve is installed at the drain outlet to periodically discharge the oil and impurities deposited at the bottom of the oil tank. The upper opening of the oil-gas mixture treatment tank is covered with a removable sealing cover and a second sealing cover. The upper left corner of the oil-gas mixture treatment tank is provided with a first exhaust port through the horizontal direction. The lower left wall of the oil-gas mixture treatment tank is provided with an oil inlet through the horizontal direction, and the lower right wall is provided with a first oil outlet through the horizontal direction. The first exhaust port and the second exhaust port are sealed together by the first air guide rigid pipe. An oil injection ball valve is installed in series between the oil inlet and the second oil outlet. The three are sealed together by a rigid pipe. The oil injection ball valve controls the on / off of lubricating oil injection and the flow rate adjustment. The first oil outlet is sealed with an oil injection hose via a sealing joint. A first air guide hose is coaxially inserted inside the oil injection hose. One end of the first air guide hose passes through the first oil outlet and is sealed to the first exhaust port to form a gas circulation channel. The other end extends to the outside of the oil injection hose and is sealed to the air guide funnel via a seamless connection.

[0007] Furthermore, a first sealing cap is provided at the lower end of the oil injection hose to seal the oil injection port of the crude oil separator. A sealing structure is provided between the contact surface of the first sealing cap and the oil injection hose port. The sealing structure is an oil-resistant sealing gasket embedded inside the first sealing cap, so as to achieve port sealing of the oil injection hose in the oil injection state.

[0008] Furthermore, the inner diameter of the oil injection hose is larger than the outer diameter of the first air guide hose, forming a lubricating oil injection channel between the two. The outer end of the first air guide hose is 5-10cm longer than the end of the oil injection hose, so that the air guide funnel can better cover the filling port of the equipment to be injected, effectively preventing oil from flowing back into the air guide channel and causing blockage.

[0009] Furthermore, the lower inner diameter of the air guide funnel is set to 0.6 to 0.8 times the inner diameter of the oil inlet of the equipment to be filled, and the upper inner diameter of the air guide funnel is matched with the lower outer diameter of the first air guide hose, and is fixed by a seamless connection method of bonding or hot melt welding.

[0010] Furthermore, both the second air guide tube and the spherical air guide directional nozzle adopt a 90° arc structure.

[0011] Furthermore, an oil level gauge is detachably inserted vertically along the central axis of the oil tank. The range of the oil level gauge matches the effective volume of the oil tank, with its lower end extending to the bottom of the oil tank and its upper end 20-50mm below the filter screen.

[0012] Furthermore, the first gas guide tube is made of polycarbonate and is locked at both ends by sealing joints and pipe clamps to realize gas flow between the oil tank and the oil-gas mixing treatment tank, thus constructing a closed-loop pressure balance system; the rigid pipe is made of stainless steel and the connection is fixed by welding or sealing joints to ensure sealing performance; the oil injection hose is made of oil-resistant and pressure-resistant flexible hose; and the first gas guide hose is made of polytetrafluoroethylene.

[0013] Furthermore, the trolley is a single-layer load-bearing structure, on which are mounted casters, brake plates, load-bearing plates and telescopic trolleys. The casters are fixed at the four corners of the lower surface of the load-bearing plate, and the brake plates and casters are matched one by one to achieve device positioning. An adjustable telescopic support is fixedly installed in the central area of ​​the load-bearing plate.

[0014] Furthermore, the adjustable telescopic support includes a support base and a top base. The support base is detachably connected to the center part of the bearing plate. A first anti-slip pad is laid between the lower part of the support base and the upper surface of the bearing plate. A screw is provided at the lower part of the support base, passing through the first anti-slip pad, the bearing plate and the metal washer in sequence, and is locked by the first fixing nut thread. A support rod is installed on the upper part of the support base. The upper outer circumference of the support rod is machined with external threads, which mesh with the internal threads of the inner circumference of the adjusting nut fixed at the lower end of the integrally formed connecting pipe of the top seat. The height of the top seat can be adjusted by adjusting the nut, thereby adjusting the filling height of the main filling component to adapt to the oil inlet height of different models of coalbed methane booster. A limit nut is fitted at the threaded connection between the support base and the top seat. By tightening the limit nut, the threaded connection is locked against the lower surface of the top seat, preventing relative rotation due to vibration during use.

[0015] Furthermore, two pairs of fixing blocks are symmetrically fixed on the upper part of the top seat along its center line. Each pair of fixing blocks is arranged opposite to each other to form a clamping space to accommodate the main filling component. Each fixing block has a through hole that runs horizontally through its interior. The outer section of the through hole is narrowed to form a threaded hole, and an adjustable bolt is threaded into the threaded hole. The inner end of the adjustable bolt extends to the inner side of the fixing block and is rotatably connected to an adjusting plate through a bearing. A spring is fitted on the outer circumference of the adjustable bolt. The two ends of the spring abut against the bottom end of the through hole and the outer wall of the adjusting plate, respectively, forming an elastic buffer structure to prevent excessive clamping force from damaging the sealing container of the main filling component. A second anti-slip pad is fixedly attached to the inner wall of the adjusting plate. The adjusting plate is driven to move towards each other by rotating the adjustable bolt. With the buffering effect of the spring, the main filling component is flexibly clamped and fixed, and it can be adapted to filling components of different sizes. A third anti-slip pad is attached to the upper part of the top seat within the clamping space surrounded by the fixed block, which can prevent slipping and buffer the filling component.

[0016] The present invention has the following beneficial effects: 1. Constructing a closed-loop pressure balance system to eliminate the safety hazard of oil splashing: The device forms a complete pressure balance system through the coordinated design of the oil-gas mixing treatment tank, the gas circulation channel, and the pressure regulating components. During filling, residual gas in the crude oil separator circulates and depressurizes through the gas funnel, the first gas hose, the first gas rigid pipe, the second gas hose, and the second gas rigid pipe, preventing gas from being pushed out and causing oil splashing. The spherical valve can adjust the gas pressure in the oil tank, and the 90° arc-shaped spherical gas directional nozzle can guide the airflow in a direction when there is a brief positive pressure in the oil tank, preventing oil droplets from splashing. The inner diameter of the lower opening of the gas funnel is optimized to 0.6~0.8 times the inner diameter of the oil filling port, which can efficiently collect oil and gas without interfering with the filling operation, eliminating the risk of workers being scalded by medium-temperature oil from the source, and meeting the safety operation requirements of the site.

[0017] 2. Three-level impurity control to protect the core components of the booster compressor: The device is equipped with a filter screen inside the oil tank's oil inlet, which can accurately intercept impurities such as dust and metal shavings in the lubricating oil, preventing impurities from entering the core components of the booster compressor; the lower part of the oil tank adopts a funnel-shaped concave structure, which facilitates impurity deposition, and can be used with a drain ball valve to periodically discharge the deposits to avoid secondary pollution; the fully sealed design prevents external impurities from entering the oil, forming a three-level impurity control system of "filtration-deposition-drainage", which significantly reduces the risk of wear and failure of the booster compressor caused by impurities, extends the service life of the equipment, reduces operation and maintenance costs and downtime rate, and is suitable for the long-term stable operation requirements of coalbed methane booster compressors.

[0018] 3. Single-person operation improves work efficiency and reduces labor costs: The device integrates a trolley and an adjustable telescopic base. Universal wheels and brakes enable flexible movement and stable positioning, eliminating the need for multiple people to handle it. The adjustable base uses a threaded structure to adjust the height, and the elastic clamping mechanism adapts to different sizes of filling bodies, allowing a single person to complete device positioning, height adjustment, and fixation. During filling, an electronic pressure gauge monitors the pressure in real time, and a highly sensitive airflow whistle provides early warning of abnormal pressure. Operators can regulate the pressure balance between the oil tank and the crude oil separator using the air-adjusting ball valve and the air guide tube. The oil filling ball valve independently controls the filling on / off and flow rate, eliminating the need for multiple people to coordinate throughout the process. This changes the traditional two-person cooperation mode, significantly improving work efficiency, reducing labor costs, and avoiding safety risks caused by improper personnel coordination.

[0019] 4. Modular design, strong adaptability and ease of operation and maintenance: The main filling component adopts an integrated structure of oil tank and oil-gas mixing treatment tank, which is detachably connected to the base for easy disassembly, inspection and maintenance; the double fixing structure (bolt locking + anti-slip pad cushioning) and elastic clamping mechanism of the supporting base ensure assembly stability under vibration conditions. The device can be adapted to the oil inlet height and size of different models of coalbed methane booster compressors. The oil level gauge intuitively displays the oil volume. The detachable structure of the drain ball valve, sealing cap and other components facilitates cleaning and troubleshooting, reducing the difficulty of on-site operation and maintenance. It can be widely used in the lubrication oil filling operation of equipment such as booster compressor crude oil separators.

[0020] 5. Precise pressure control ensures continuous and reliable refueling: A high-precision electronic pressure gauge provides real-time feedback on pressure changes within the oil tank. Operators can precisely adjust the tank pressure using a swivel valve to achieve dynamic pressure balance, preventing excessive pressure from causing oil splashing or insufficient pressure from interrupting refueling. The bypass pressure balance port and directional nozzle form a pressure redundancy protection system, allowing for rapid pressure relief in case of abnormal pressure, ensuring a smooth and orderly refueling process, guaranteeing the continuity and reliability of lubricating oil refueling, and meeting the operation and maintenance specifications for coalbed methane booster compressors.

[0021] In summary, this device, through structural innovation and functional integration, effectively solves the safety, equipment protection, and efficiency problems of traditional filling operations. It takes into account safety, practicality, and versatility, and can significantly optimize the lubricating oil filling and maintenance process of coalbed methane booster compressors, reduce operational risks and costs, and has important engineering application value and promotion significance. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the pull rod vehicle of the present invention; Figure 3 This is a schematic diagram of the adjustable telescopic support of the present invention; Figure 4 This is a schematic diagram of the main component for adding ink in this invention.

[0023] In the diagram: 1. Tray, 1-1. Casters, 1-2. Brake plate, 1-3. Load-bearing plate, 1-4. Tray rod. 2. Adjustable telescopic support, 2-1. First fixing nut, 2-2. Washer, 2-3. First anti-slip pad, 2-4. Support base, 2-5. Limiting nut, 2-6. Adjusting nut, 2-7. Top seat, 2-8. Fixing block, 2-9. Adjustable bolt, 2-10. Spring, 2-11. Adjusting plate, 2-12. Second anti-slip pad, 2-13. Third anti-slip pad; 3. Main Components for Filling: 3-1. Air Inlet Funnel; 3-2. First Air Inlet Hose; 3-3. First Sealing Cap; 3-4. Oil Inlet Hose; 3-5. Oil Inlet Ball Valve; 3-6. Oil Inlet; 3-7. First Oil Outlet; 3-8. Oil-Gas Mixing Treatment Tank; 3-9. First Sealing Gasket; 3-10. Second Sealing Cap; 3-11. First Exhaust Port; 3-12. First Air Inlet Rigid Pipe; 3-13. Sewage Outlet; 3-14. Second Oil Outlet; 3-15. Second Exhaust Port; 3-16. Second Air Inlet Hose; 3-1 7. Oil level gauge; 3-18. Handle; 3-19. Filter screen; 3-20. Third sealing cap; 3-21. Third vent; 3-22. Second sealing gasket; 3-23. Fourth sealing cap; 3-24. Oil inlet; 3-25. High-sensitivity airflow whistle; 3-26. Second air guide tube; 3-27. Gauge ball valve; 3-28. Electronic pressure gauge; 3-29. Oil tank; 3-30. Third sealing gasket; 3-31. Pressure balance port; 3-32. Air regulating ball valve; 3-33. Spherical air guiding directional nozzle. Detailed Implementation

[0024] To better understand the purpose, structure, and function of this invention, the following detailed description of a specific embodiment of an anti-splash self-sealing lubricating oil filling device of this invention, in conjunction with the accompanying drawings, is provided.

[0025] like Figure 1 As shown, a splash-proof self-sealing lubricating oil filling device includes a pull rod trolley 1, an adjustable telescopic support 2 integrated thereon, and a filling main component 3. The three are modularly integrated, which facilitates on-site movement and operation.

[0026] like Figure 2 As shown, the trolley 1 adopts a single-layer load-bearing structure, including casters 1-1, brake plates 1-2, load-bearing plates 1-3 and telescopic pull rods 1-4. Casters 1-1 are fixed at the four corners of the lower surface of the load-bearing plate 1-3. Brake plates 1-2 and casters 1-1 are matched one-to-one to achieve device positioning. An adjustable telescopic support 2 is fixedly installed in the central area of ​​the load-bearing plate 1-3. The main filling component 3 is assembled on the adjustable telescopic support 2 through a detachable connection structure to achieve quick assembly, disassembly and positioning of the main filling component 3.

[0027] The bearing plate 1-3 is made of Q235 steel plate with a thickness of ≥8mm to ensure load-bearing strength; the casters 1-1 are polyurethane wheels with double wheel brakes, with a diameter of ≥100mm, which have the characteristics of wear resistance and strong load-bearing capacity, and are suitable for the rugged road surface of coalbed methane fields; each caster 1-1 is equipped with a corresponding brake plate 1-2, which can realize single-point or multi-point locking of the device to ensure stability during filling operations; the telescopic tie rod 1-4 is fixedly installed on one side of the long axis of the bearing plate 1-3, made of aluminum alloy, with a telescopic stroke of 0.8-1.5m, which is convenient for operators of different heights to operate and move.

[0028] like Figure 3 As shown, the adjustable telescopic support 2 consists of a first fixing nut 2-1, a metal washer 2-2, a first anti-slip pad 2-3, a support base 2-4, a limit nut 2-5, an adjusting nut 2-6, a top seat 2-7, a fixing block 2-8, an adjustable bolt 2-9, a spring 2-10, an adjusting plate 2-11, a second anti-slip pad 2-12, and a third anti-slip pad 2-13.

[0029] The support base 2-4 is made of stainless steel. The lower part is provided with screws that pass through the first anti-slip pad 2-3, the bearing plate 1-3 and the metal washer 2-2 in sequence, and are locked by the first fixing nut 2-1 to form a fixed structure, so as to realize the firm connection between the support base 2-4 and the bearing plate 1-3 and prevent the device from vibrating during transportation.

[0030] The first anti-slip pad 2-3 is made of rubber with a thickness of 5mm, used to increase friction and improve assembly stability. A support rod is installed on the upper part of the support base 2-4. The upper part of the support rod has an external thread that engages with the adjusting nut 2-6 fixed at the lower end of the connecting pipe of the top seat 2-7. The height is adjusted by adjusting the nut 2-6, thereby adjusting the filling height of the main filling component 3. The adjustment range is 0.3-1.0m, which is suitable for different oil filling port heights of booster compressors (usually 0.8-2.0m).

[0031] A limit nut 2-5 is fitted at the threaded connection. By tightening the limit nut 2-5 to press against the lower surface of the adjusting nut 2-6, the threaded connection is locked, and the height is locked to prevent relative rotation due to vibration during use, thus ensuring the accuracy of height positioning.

[0032] Two pairs of fixing blocks 2-8 are symmetrically fixed on the upper part of the top seat 2-7 along its center line. Each pair of fixing blocks 2-8 is arranged opposite each other to form a clamping space to accommodate the main filling component 3. Each fixing block 2-8 has a through hole running horizontally through its interior. The outer section of the through hole is narrowed and has a threaded hole. An adjustable bolt 2-9 is threaded into the threaded hole. The inner end of the adjustable bolt 2-9 extends to the inner side of the fixing block 2-8 and is connected to the adjusting plate 2-11 through a bearing. A spring 2-10 is fitted on the outer periphery. The spring 2-10 is a compression spring with an elastic coefficient of 5N / mm. The two ends of the spring 2-10 abut against the bottom end of the through hole and the outer wall of the adjusting plate 2-11, respectively, forming an elastic buffer structure to prevent excessive clamping force from damaging the main filling component 3.

[0033] A second anti-slip pad 2-12 is attached to the inner side of the adjusting plate 2-11. Rotating the adjustable bolt 2-9 drives the adjusting plate 2-11 to move in opposite directions. Combined with the buffering effect of the spring 2-10, this achieves flexible clamping and fixation of the main filling component 3. It also accommodates filling components 3 of different sizes, improving the device's versatility. A third anti-slip pad 2-13 is attached to the upper part of the top seat 2-7 within the clamping space formed by the fixing block 2-8, providing anti-slip and buffering for the filling component 3, further enhancing stability under vibration conditions. Both the second anti-slip pad 2-12 and the third anti-slip pad 2-13 are made of oil-resistant, anti-slip rubber with a thickness of 3mm.

[0034] like Figure 4 As shown, the main filling component 3 consists of a venting funnel 3-1, a first venting hose 3-2, a first sealing cap 3-3, an oil filling hose 3-4, an oil filling ball valve 3-5, an oil inlet 3-6, a first oil outlet 3-7, an oil-gas mixing treatment tank 3-8, a first sealing gasket 3-9, a second sealing cap 3-10, a first exhaust port 3-11, a first venting rigid pipe 3-12, a drain port 3-13, a second oil outlet 3-14, a second exhaust port 3-15, a second venting hose 3-16, an oil level gauge 3-17, and a handle 3-18. The system consists of a filter screen 3-19, a third sealing cover 3-20, a third exhaust port 3-21, a second sealing gasket 3-22, a fourth sealing cover 3-23, an oil inlet 3-24, a highly sensitive airflow whistle 3-25, a second air guide tube 3-26, a ball valve for gauges 3-27, an electronic pressure gauge 3-28, an oil tank 3-29, a third sealing gasket 3-30, a pressure balance port 3-31, a spherical air guide directional nozzle 3-33. Each component is sequentially sealed and connected along the oil and gas flow channels and functional characteristics to form a modular integrated unit.

[0035] Both oil tank 3-29 and oil-gas mixing treatment tank 3-8 are made of stainless steel with a wall thickness of ≥3mm, possessing oil resistance and pressure resistance. Oil tank 3-29 is used to store lubricating oil to be added. Handles 3-18 are symmetrically arranged on both sides of oil tank 3-29. The upper opening of oil tank 3-29 is covered by a third sealing cover 3-20 through a threaded connection. A third sealing gasket 3-30 is embedded between the contact surface of the third sealing cover 3-20 and the opening of oil tank 3-29. The third sealing gasket 3-30 is made of nitrile oil-resistant rubber with a Shore hardness of 60-70 degrees, and a reliable seal is achieved through threaded tightening force.

[0036] A pressure balancing port 3-31 is provided on the left side of the third sealing cover 3-20. A spherical air regulating valve 3-32 is sealed and installed on the upper part of the pressure balancing port 3-31 via a threaded joint. A spherical air guiding and directional nozzle 3-33 is sealed and connected to the upper part of the spherical air regulating valve 3-32 via a quick-connect structure. The spherical air regulating valve 3-32 is made of aluminum alloy with an adjustment accuracy of 0.05 MPa. The spherical air guiding and directional nozzle 3-33 is made of polycarbonate with a 90° arc structure and a curvature radius of 50-80 mm, adapting to the overall layout of the device. The pressure inside the oil tank is adjusted by the spherical air regulating valve 3-32, which, in conjunction with the spherical air guiding and directional nozzle 3-33, achieves directional airflow, preventing oil droplets from splashing. The filling speed can also be adjusted according to pressure changes.

[0037] An oil inlet 3-24 is vertically inserted through the center of the third sealing cap 3-20. The upper part of the oil inlet 3-24 is threadedly connected to and covers the fourth sealing cap 3-23. The upper part of the fourth sealing cap 3-23 sequentially seals the assembly ball valve 3-27 and the electronic pressure gauge 3-28. The electronic pressure gauge 3-28 is a digital display type, employing a high-precision pressure sensing module with a measurement range of -0.1-0.1 MPa and an accuracy class of not less than 0.5. It can accurately monitor the pressure inside the tank in real time, allowing operators to adjust the pressure inside the tank using the ball valve to achieve dynamic pressure balance. A second sealing gasket 3-22 is embedded between the fourth sealing cap 3-23 and the oil inlet 3-24. The oil inlet 3-24 is sealed by the threaded locking force of the fourth sealing cap 3-23. The second sealing gasket 3-22 is made of oil-resistant and pressure-resistant fluororubber, suitable for medium-temperature oil conditions. The filter screen 3-19 is fixedly installed on the inner side of the lower part of the fourth sealing cover 3-23 corresponding to the oil filling port 3-24 by bolts. The filter screen 3-19 is made of 304 stainless steel with a mesh size of 80-120 mesh, preferably 100 mesh, and the filtration accuracy can reach 0.15mm. It can accurately filter dust, metal shavings and other impurities in the lubricating oil to be added, and prevent impurities from entering the core components of the booster.

[0038] A third exhaust port 3-21 is vertically oriented through the right side of the third sealing cover 3-20. The upper part of the third exhaust port 3-21 is connected to the second air guide pipe 3-26 via a sealing joint. The outlet end of the second air guide pipe 3-26 is sealed to a highly sensitive airflow whistle 3-25. The whistle sounds when the airflow velocity is ≥0.5m / s. When there are changes in airflow or abnormal pressure within the turbocharger's crude oil separator, the airflow drives the highly sensitive airflow whistle 3-25 to sound, providing an early warning of abnormal pressure. The second air guide pipe 3-26 adopts a 90° arc structure. The radius of curvature of the arc structure adapts to the overall layout of the device, guiding the bypass airflow to directional discharge, preventing oil droplets from splashing, reducing exhaust resistance, and improving pressure regulation response speed.

[0039] An oil level gauge 3-17 is vertically inserted along the central axis of oil tank 3-29. The measuring range of the gauge 3-17 matches the effective volume of oil tank 3-29. Its lower end extends to the bottom of oil tank 3-29, and its upper end is 20-50mm below the filter screen 3-19 to avoid interference with the filter components. The gauge 3-17 is made of transparent acrylic glass with a scale accuracy of 1cm, allowing operators to visually read the remaining oil level and accurately control the filling amount.

[0040] The lower right side wall of oil tank 3-29 has a second oil outlet 3-14 and a second exhaust outlet 3-15 that are opened horizontally. The third exhaust outlet 3-21 is connected to the second exhaust outlet 3-15 through a second air guide hose 3-16. The second air guide hose 3-16 is a high-pressure oil-resistant rubber hose with a working pressure ≥0.1MPa. Both ends are locked with stainless steel pipe clamps to form a branch of airflow circulation inside the tank.

[0041] The lower part of oil tank 3-29 has a funnel-shaped concave structure. A drain port 3-13 is opened vertically in the center of the concave part. A brass drain ball valve is installed at the drain port 3-13 to regularly discharge the oil and impurities deposited at the bottom of oil tank 3-29, so as to avoid secondary pollution caused by the accumulation of impurities and ensure the cleanliness of lubricating oil.

[0042] The oil-gas mixing tank 3-8 is used to achieve oil-gas separation and pressure balance during the filling process. The upper part of the oil-gas mixing tank 3-8 is covered by a second sealing cover 3-10 through a threaded connection. A first sealing gasket 3-9 is embedded between the two. The first sealing gasket 3-9 is made of nitrile oil-resistant rubber. The sealing of the tank opening 3-8 of the oil-gas mixing tank is achieved by the threaded locking force of the second sealing cover 3-10, ensuring the oil-gas separation effect inside the tank and preventing gas leakage from affecting the pressure balance.

[0043] A first exhaust port 3-11 is opened horizontally through the upper left side of the oil-gas mixing treatment tank 3-8. It is connected to the second exhaust port 3-15 of the oil tank 3-29 through a first air guide pipe 3-12. The first air guide pipe 3-12 is made of polycarbonate with an outer diameter of 15mm and a wall thickness of 2mm. Both ends are locked with sealing joints and pipe clamps to realize gas flow between the oil tank 3-29 and the oil-gas mixing treatment tank 3-8, thus constructing a closed-loop pressure balance system.

[0044] An oil inlet 3-6 is opened at the lower left side of the oil-gas mixing treatment tank 3-8, which is connected to the second oil outlet 3-14 of the oil tank 3-29 through a rigid pipe. An oil injection ball valve 3-5 is connected in series on the pipe. The rigid pipe is made of stainless steel, and the oil injection ball valve 3-5 is made of brass. The connection is fixed by welding or sealing joint to ensure sealing performance. It can realize the on / off of the injection flow and stepless adjustment of the flow rate, and realize precise operation by a single person.

[0045] The lower right side of the oil-gas mixing treatment tank 3-8 has a first oil outlet 3-7. The first oil outlet 3-7 is sealed to the oil injection hose 3-4 through a sealing joint. The oil injection hose 3-4 is a high-pressure oil-resistant flexible hose with a working pressure ≥0.1MPa. The first gas guide hose 3-2 is coaxially inserted inside the oil injection hose 3-4. One end of the first gas guide hose 3-2 passes through the first oil outlet 3-7 and is sealed to the first exhaust port 3-11 to form a gas circulation channel. The other end extends to the outside of the oil injection hose 3-4 and is sealed to the gas guide funnel 3-1 through a seamless connection.

[0046] The inner diameter of the oil injection hose 3-4 is larger than the outer diameter of the first air guide hose 3-2, forming a lubricating oil injection channel between them. The length of the first air guide hose 3-2 is longer than that of the oil injection hose 3-2, allowing the air guide funnel 3-1 to effectively cover the filling port of the equipment to be filled, thus preventing oil backflow into the air guide channel and causing blockage. The first air guide hose 3-2 is made of polytetrafluoroethylene (PTFE), which is oil-resistant, high-temperature resistant, and anti-aging, ensuring smooth gas flow and a long service life. The end length of the first air guide hose 3-2 is 5-10 cm longer than that of the oil injection hose 3-4, preferably 8 cm.

[0047] The gas funnel 3-1 is made of stainless steel. The inner diameter of its upper opening is adapted to the outer diameter of the first gas guiding hose 3-2. It is seamlessly connected by bonding or hot-melt welding to prevent gas leakage. The inner diameter of its lower opening is 0.6 to 0.8 times the inner diameter of the oil inlet of the equipment to be filled, preferably 0.7 times. This ensures that the funnel 3-1 completely covers the gas accumulation area in the filling port, efficiently collecting the oil and gas generated during the filling process, while also preventing the edge of the funnel 3-1 from interfering with the inner wall of the filling port, ensuring smooth filling operation.

[0048] A first sealing cap 3-3 is provided at the lower end of the oil filling hose 3-4. The first sealing cap 3-3 can be threaded to the oil filling port of the coarse oil separator. A sealing structure is provided between the contact surface of the first sealing cap 3-3 and the pipe opening of the oil filling hose 3-4. The sealing structure is an oil-resistant sealing gasket embedded in the inner side of the first sealing cap 3-3, so as to achieve port sealing of the oil filling hose 3-4 in the oil filling state and prevent dust and impurities from entering the hose.

[0049] The on-site operation procedure for this device is carried out sequentially in three stages: device deployment, refueling operation, and device recovery and storage. The specific steps are as follows: 1. Equipment Deployment Phase a. Pretreatment: After shutting down the booster, first release the residual pressure inside the crude oil separator on the coalbed methane booster, close the relevant inlet and outlet valves of the booster, and ensure a safe working environment; check the integrity of each sealing part of the device (sealant, pipe joint, valve, etc.) to ensure that there is no damage or leakage.

[0050] b. Base installation and positioning: Fix the adjustable telescopic support 2 to the center area of ​​the bearing plate 1-3 with the first fixing nut 2-1, and tighten the nut to ensure it is secure; push the device to the far end of the oil inlet of the coarse oil separator, operate the brake plate 1-2 to lock the universal wheel 1-1, and realize the positioning of the device. c. Main body fixation: Place the main filling component 3 into the clamping space of the top seat 2-7 through the handle 3-18, rotate the adjustable bolt 2-9 to drive the adjusting plate 2-11 to move in opposite directions, and flexibly clamp the main filling component 3 through the buffering effect of the spring 2-10 to ensure that the second anti-slip pad 2-12 is in close contact with the outer wall of the container, so as to achieve a stable fixation.

[0051] d. Filling preparation: Close the oil filling ball valve 3-5, gauge ball valve 3-27, and adjusting ball valve 3-32; tighten the drain port 3-13; adjust the top seat 2-7 to the initial filling height using adjusting nut 2-6; open the fourth sealing cover 3-23; add lubricating oil to the oil tank 3-29 through the filter screen 3-19; control the filling amount to 50%-67% (maximum not exceeding 90%) of the effective volume of the oil tank 3-29 to avoid overflow and cavitation; close the fourth sealing cover 3-23 and tighten the threads to ensure a seal; adjust the adjusting nut 2-6 so that the bottom of the oil tank 3-29 is 0.3-1.0m higher than the oil filling port of the booster compressor, using the height difference to allow the oil to flow naturally and avoid splashing due to excessive flow rate; tighten the limit nut 2-5 to lock the height.

[0052] 2. Refueling Operation Phase a. Connection and depressurization: Move the device to the vicinity of the crude oil separator's oil inlet, making the device parallel to the booster compressor, with the oil level gauge 3-17 facing the operator. Read and record the initial oil volume on the oil level gauge 3-17. Open the gauge ball valve 3-27, and insert the air funnel 3-1, the first air hose 3-2, and the oil inlet hose 3-4 into the oil inlet. Ensure that the air funnel 3-1 completely covers the gas accumulation area of ​​the oil inlet, and seal it with the first sealing cap 3-3. When the high-sensitivity airflow whistle 3-25 stops emitting sound and the electronic pressure gauge 3-28 displays a pressure of 0 MPa, it indicates that the system pressure is balanced, and filling can begin.

[0053] b. Precise filling: Slowly open the oil filling ball valve 3-5 and adjust the valve opening to control the filling flow rate; further adjust the pressure inside the oil tank through the adjusting ball valve 3-32 to maintain the pressure displayed on the electronic pressure gauge 3-28 at less than 0.01MPa to ensure stable filling; if the filling speed is too fast or there is too much residual gas in the separator, causing the highly sensitive airflow whistle 3-25 to sound and the pressure gauge to rise rapidly, immediately reduce the opening of the oil filling ball valve 3-5, and continue filling after the pressure stabilizes and the airflow whistle stops.

[0054] c. Stop adding oil: When the oil level reaches 15mm below the maximum line displayed on the coarse oil separator, slowly close the regulating ball valve 3-32; when the coarse oil separator level reaches 10mm below the maximum line, close the oil filling ball valve 3-5, read and record the final oil volume on the oil level measuring scale 3-17; after the high-sensitivity airflow whistle 3-25 stops making a sound and the pressure gauge shows zero pressure, open the first sealing cover 3-3, and after the remaining oil in the oil filling hose 3-4 has dripped out, pull out the air guide funnel 3-1, the first air guide hose 3-2 and the oil filling hose 3-4, and cover the oil filling port with the dust cover.

[0055] d. Continuous operation: If multiple booster compressors in the same compression station need to be refilled, simply repeat steps ac above; there is no need to redeploy the equipment.

[0056] 3. Equipment recycling and storage stage a. Pressure relief and cleaning: After all booster pumps have been filled, close the gauge ball valve 3-27; lower the limit nut 2-5 and adjusting nut 2-6 to lower the top seat 2-7 to its lowest height, and tighten the limit nut 2-5 to lock it; if the device will not be used for a long time, open the oil filling ball valve 3-5 and adjusting ball valve 3-32 to drain the oil tank 3-29 and the remaining oil in the hose; open the drain ball valve of the drain port 3-13 to drain the impurities and oil deposited at the bottom, and close the drain ball valve after draining; open the fourth sealing cover 3-23, take out the filter screen 3-19 for cleaning, and after cleaning, reset and tighten the fourth sealing cover 3-23.

[0057] b. Storage and retrieval: Remove the main filling component 3, and wind up the oil filling hose 3-4; release the brake plate 1-2, push the device to the designated storage area, lock the casters 1-1, and complete the recycling and storage.

[0058] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A splash-proof, self-sealing lubricating oil filling device, characterized in that, It includes a trolley (1), an adjustable telescopic support (2) mounted on the trolley (1), and a filling main assembly (3) mounted on the adjustable telescopic support (2). The main filling component (3) includes an oil tank (3-29) and an oil-gas mixing treatment tank (3-8) arranged in parallel and fixedly connected. The oil tank (3-29) is used to store the lubricating oil to be filled, and the oil-gas mixing treatment tank (3-8) is used to separate and balance the oil and gas generated during the filling process. The top of the oil tank (3-29) is equipped with a sealing cover structure. The sealing cover structure is equipped with a blowout prevention and venting assembly, an oil injection assembly, and a third vent (3-21). The blowout prevention and venting assembly includes an air regulating valve and an air guiding nozzle, which are used to regulate the air pressure inside the tank. The side wall of the oil tank (3-29) is provided with a second oil outlet (3-14) and a second exhaust outlet (3-15). The second exhaust outlet (3-15) and the third exhaust outlet (3-21) are connected by a gas guide pipe to form a gas circulation channel. The side wall of the oil-gas mixing treatment tank (3-8) is provided with an oil inlet (3-6), a first oil outlet (3-7) and a first exhaust outlet (3-11). The oil inlet (3-6) and the second oil outlet (3-14) of the oil tank are connected by a pipeline and a control valve is provided to control the delivery of lubricating oil to the oil-gas mixing treatment tank. The first oil outlet (3-7) is connected to an oil injection hose (3-4). An air guide pipe is installed inside the oil injection hose (3-4). One end of the air guide pipe is connected to the first exhaust port (3-11) of the oil-gas mixing treatment tank (3-8), and the other end extends to the outside of the oil injection hose (3-4) and is connected to the air guide structure to form an oil-gas circulation channel during the filling process.

2. The anti-splash self-sealing lubricating oil filling device according to claim 1, characterized in that, The oil tank (3-29) has an opening at the top and a removable sealing cover and a third sealing cover (3-20). A pressure balance port (3-31) is vertically opened on the left side of the third sealing cover (3-20). A spherical air-guiding nozzle (3-33) is sealed and installed at the top of the pressure balance port (3-31) through a sealing threaded joint. A spherical air-guiding nozzle (3-33) is sealed and connected at the top of the spherical air-guiding nozzle (3-32) through a quick-connect structure. The third sealing cover (3-20) has a vertically penetrating oil inlet (3-24) in the middle. The upper part of the oil inlet (3-24) is detachably covered by a fourth sealing cover (3-23). ​​The upper part of the fourth sealing cover (3-23) is sequentially sealed with a gauge ball valve (3-27) and an electronic pressure gauge (3-28). The electronic pressure gauge (3-28) is connected to the inside of the oil tank (3-29) to monitor the pressure inside the tank in real time. The lower part of the fourth sealing cover (3-23) is fixedly installed with a filter screen (3-19) corresponding to the inner position of the oil inlet (3-24). The right side of the third sealing cover (3-20) has a vertically penetrating third exhaust port (3-21). The upper part of the third exhaust port (3-21) is sealed to the second air guide tube (3-26) through a sealing joint. The outlet end of the second air guide tube (3-26) is sealed to a high-sensitivity airflow whistle (3-25) for real-time feedback of airflow changes and pressure abnormalities in the turbocharger crude oil separator. The lower right side wall of the oil tank (3-29) is horizontally provided with a second oil outlet (3-14) and a second exhaust outlet (3-15). The third exhaust outlet (3-21) and the second exhaust outlet (3-15) are sealed and connected by a second air guide hose (3-16). The lower part of the oil tank (3-29) has a funnel-shaped concave structure, and a drain outlet (3-13) is opened vertically in the center of the concave part. A drain ball valve is installed at the drain outlet (3-13). The upper opening of the oil-gas mixing treatment tank (3-8) is covered by a removable sealing cover and a second sealing cover (3-10). The upper left corner of the second sealing cover (3-10) is provided with a first exhaust port (3-11) through the horizontal direction. The lower left wall of the oil-gas mixing treatment tank (3-8) is provided with an oil inlet (3-6) through the horizontal direction, and the lower right wall is provided with a first oil outlet (3-7) through the horizontal direction. The first exhaust port (3-11) and the second exhaust port (3-15) are sealed together by the first air guide tube (3-12). An oil ball valve (3-5) is installed in series between the oil inlet (3-6) and the second oil outlet (3-14). The three are sealed together by a rigid pipe. The oil ball valve (3-5) controls the on / off of lubricating oil filling and the flow rate adjustment. The first oil outlet (3-7) is sealed and connected to the oil injection hose (3-4) through a sealing joint. The oil injection hose (3-4) is an oil-resistant and pressure-resistant flexible hose. The first air guide hose (3-2) is coaxially inserted inside it. One end of the first air guide hose (3-2) passes through the first oil outlet (3-7) and is sealed and connected to the first exhaust port (3-11) to form a gas circulation channel. The other end extends to the outside of the oil injection hose (3-4) and is sealed and connected to the air guide funnel (3-1) through a seamless connection.

3. The anti-splash self-sealing lubricating oil filling device according to claim 2, characterized in that, A first sealing cap (3-3) is provided at the lower end of the oil injection hose (3-4) to seal the oil injection port of the crude oil separator. A sealing structure is provided between the first sealing cap (3-3) and the contact surface of the oil injection hose (3-4) port. The sealing structure is an oil-resistant sealing gasket embedded in the inner side of the first sealing cap (3-3) to achieve port sealing of the oil injection hose (3-4) in the oil injection state.

4. The anti-splash self-sealing lubricating oil filling device according to claim 2, characterized in that, The inner diameter of the oil injection hose (3-4) is larger than the outer diameter of the first air guide hose (3-2), forming a lubricating oil injection channel between the two. The outer end of the first air guide hose (3-2) is 5-10cm longer than the end of the oil injection hose (3-4).

5. The anti-splash self-sealing lubricating oil filling device according to claim 4, characterized in that, The inner diameter of the lower opening of the air guide funnel (3-1) is set to 0.6 to 0.8 times the inner diameter of the oil inlet of the equipment to be filled. The inner diameter of the upper opening of the air guide funnel (3-1) is adapted to the outer diameter of the lower end of the first air guide hose (3-2), and is fixed by a seamless connection method of bonding or hot melt welding.

6. The anti-splash self-sealing lubricating oil filling device according to claim 2, characterized in that, An oil level gauge (3-17) is detachably inserted vertically along the central axis of the oil tank (3-29). The range of the oil level gauge (3-17) matches the effective volume of the oil tank (3-29). Its lower end extends to the bottom of the oil tank (3-29), and its upper end is 20~50mm lower than the filter screen (3-19).

7. The anti-splash self-sealing lubricating oil filling device according to claim 2, characterized in that, The first gas guide tube (3-12) is made of polycarbonate and is locked at both ends by sealing joints and pipe clamps to achieve gas flow between the oil tank (3-29) and the oil-gas mixing treatment tank (3-8); the rigid pipe is made of stainless steel and the connection is fixed by welding or sealing joints; the oil injection hose (3-4) is made of oil-resistant and pressure-resistant flexible hose; and the first gas guide hose (3-2) is made of polytetrafluoroethylene.

8. The anti-splash self-sealing lubricating oil filling device according to claim 1, characterized in that, The trolley (1) is a single-layer load-bearing structure, on which are mounted casters (1-1), brake plates (1-2), load-bearing plates (1-3) and telescopic trolleys (1-4). The casters (1-1) are fixed at the four corners of the lower surface of the load-bearing plate (1-3). The brake plates (1-2) and casters (1-1) are matched one-to-one to achieve device positioning. An adjustable telescopic support (2) is fixedly installed in the central area of ​​the load-bearing plate (1-3).

9. The anti-splash self-sealing lubricating oil filling device according to claim 8, characterized in that, The adjustable telescopic support (2) includes a support base (2-4) and a top seat (2-7). The support base (2-4) is detachably connected to the center of the bearing plate (1-3). A first anti-slip pad (2-3) is laid between the lower part of the support base (2-4) and the upper surface of the bearing plate (1-3). A screw is provided at the lower part of the support base (2-4) and passes through the first anti-slip pad (2-3), the bearing plate (1-3) and the metal washer (2-2) in sequence, and is locked by the first fixing nut (2-1). A support rod is provided on the upper part of the support base (2-4). The outer circumferential surface of the support rod is machined with external threads. It meshes with the internal threads of the inner circumferential surface of the adjusting nut fixed at the lower end of the connecting pipe integrally formed at the lower part of the top seat (2-7). The height of the top seat (2-7) is adjusted by adjusting the nut (2-6), thereby adjusting the filling height of the filling main component (3). A limit nut (2-5) is fitted at the threaded connection between the support base (2-4) and the top seat (2-7). By tightening the limit nut (2-5) against the lower surface of the top seat (2-7), the threaded connection is locked.

10. The anti-splash self-sealing lubricating oil filling device according to claim 9, characterized in that, Two pairs of fixing blocks (2-8) are symmetrically fixed on the upper part of the top seat (2-7) along its center line. Each pair of fixing blocks (2-8) is arranged opposite to each other to form a clamping space to accommodate the main injection component (3). Each fixing block (2-8) has a through hole that runs horizontally through its interior. The outer section of the through hole is narrowed to have a threaded hole. An adjustable bolt (2-9) is threaded into the threaded hole. The inner end of the adjustable bolt (2-9) extends to the inner side of the fixing block (2-8) and is rotatably connected to an adjusting plate (2-11) through a bearing. A spring (2-10) is fitted on the outer periphery of the adjustable bolt (2-9). The two ends of the spring (2-10) abut against the bottom end of the through hole and the outer wall of the adjusting plate (2-11) respectively, forming an elastic buffer structure. The inner wall of the adjusting plate (2-11) is fixedly pasted with a second anti-slip pad (2-12). By rotating the adjustable bolt (2-9), the adjusting plate (2-11) is driven to move towards each other. With the buffering effect of the spring (2-10), the filling main component (3) is flexibly clamped and fixed. The upper part of the top seat (2-7) is located in the clamping space surrounded by the fixing block (2-8) and a third anti-slip pad (2-13) is pasted on it.

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