Automatic oil supply system of ship oil supply pump
By designing an automatic fuel supply system for ship fuel pumps with a mechanical structure, the problem of traditional systems relying on electronic equipment was solved, realizing automatic fuel supply and pressure relief functions, and ensuring the stability and reliability of engine fuel supply.
Patent Information
- Application Number
- CN202511263090.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-05
- Publication Date
- 2025-11-18
AI Technical Summary
Traditional ship fuel supply systems rely too heavily on electronic equipment, making troubleshooting difficult and requiring specialized electricians, and they cannot function properly in rough seas.
Design an automatic fuel supply system for marine fuel pumps, reducing the use of electronic sensors and using a mechanical structure to achieve automatic fuel supply and depressurization. Components such as spring valves, check valves, bimetallic switches, and mechanical clutches ensure the automatic depressurization and heating functions of the fuel tank.
It achieves automatic oil supply and depressurization under mechanical structure, reduces the impact of electronic sensor failure, ensures the stability and reliability of engine oil supply, and adapts to different operating conditions.
Smart Images
Figure CN120968987A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of ship oil supply, in particular to a ship oil supply pump automatic oil supply system. BACKGROUND
[0002] The ship oil supply pump is a key equipment in the ship fuel system, which is responsible for transporting fuel from the storage cabin to the consuming equipment such as engine or boiler; its design needs to meet the special working condition requirements of the ship, such as stability, explosion-proof, corrosion resistance, etc.; and on the ship, the oil supply system that "feeds oil" to the engine is like the blood vessels of the human body, which cannot stop for a moment. But the traditional system has a problem - too dependent on electronic equipment; for example, if the oil quantity is not enough, it needs to rely on electronic liquid level sensor to send signals; if the oil pressure is unstable, it needs to rely on the circuit board to adjust the valve; once a problem occurs, it is more difficult to repair, it needs to bring a lot of spare parts, and ask a professional electrician, and if it encounters a storm, it can only stare blankly.
[0003] Therefore, we design a ship oil supply pump automatic oil supply system, which reduces the use of electronic sensors, automatically supplies oil under mechanical structure, automatically releases pressure, reduces the sensing problems of sensors, and further affects the engine oil supply. SUMMARY
[0004] The purpose of the present application is to solve the problems existing in the prior art, and to provide a ship oil supply pump automatic oil supply system.
[0005] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows: A ship oil supply pump automatic oil supply system, comprising a fuel tank for storing fuel, the fuel tank is provided with an oil inlet mechanism and a heating mechanism respectively, the fuel tank is provided with a spring valve, the port of the spring valve is provided with a return pipe, the oil inlet mechanism comprises an oil supply pump connected with one side of the fuel tank, the oil supply pump is provided with an oil inlet pipe and an oil outlet pipe respectively, the heating mechanism comprises a circulation pipe connected with the other side of the fuel tank, two supporting rods are arranged in the fuel tank, a fixed seat is fixed on the supporting rods, a round rod is rotatably connected to the fixed seat, a floating ball and a counterweight are arranged at both ends of the round rod.
[0006] Preferably, one end of the return pipe away from the spring valve is in communication with and fixedly connected to the oil inlet pipe, and a one-way valve is arranged on the return pipe and the oil outlet pipe, so as to prevent the fuel from flowing back.
[0007] Preferably, holes adapted to the inlet of the spring valve and the oil outlet end of the oil outlet pipe are formed in the fuel tank, so that the fuel tank has the function of pressure relief by arranging the spring valve; when the pressure in the fuel tank is high, the fuel will rush out of the spring valve and enter the return pipe, and the spring valve will be closed again when the pressure is reduced.
[0008] Preferably, a fuel delivery pipeline is provided under the fuel tank, and a main pump is connected to the bottom of the fuel tank through the fuel delivery pipeline. The fuel tank is connected to the engine through the fuel delivery pipeline and the main pump. By providing the fuel delivery pipeline, the fuel tank, which stores fuel, can conveniently deliver fuel to the engine in a timely manner.
[0009] Preferably, a circulation pump and a bimetallic switch are respectively provided at both ends of the circulation pipe. Both ends of the circulation pipe pass through the fuel tank and are fixedly connected to the fuel tank. By providing a bimetallic switch, it is convenient to control the opening and closing of the circulation pipe. When the fuel temperature is below 80°C, the bimetallic strip is straight, the circulation pump and circulation pipe are opened, and the fuel flows into the circulation pipe for heating and circulation. When the fuel is heated to 120°C, the bimetallic strip bends to the maximum angle, and the valve is completely closed.
[0010] Preferably, a heating tube is provided inside the circulation pipe, and both the heating tube and the circulation pump are connected to a power supply and a thermostat. By providing a heating tube inside the circulation pipe, it is convenient to heat the fuel inside the circulation pipe.
[0011] Preferably, there are two support rods and two fixed seats, and a positioning rod is fixedly connected between the two fixed seats. The round rod is sleeved on the positioning rod and rotatably connected to the positioning rod. By setting the support rod, fixed seat and positioning rod, it is easy to make its shape similar to the gantry frame. The round rod swings on its positioning rod, and the swing range of the round rod is limited by the fixed seats at both ends of the positioning rod.
[0012] Preferably, the top end of the round rod is hinged to the float, and a limiting rod is provided on the inner wall of the fuel tank to limit the round rod. By providing the float, the round rod can be positioned approximately vertically in the fuel tank containing fuel, while the limiting rod limits the swing direction of the round rod, causing it to swing in one direction when the fuel level decreases.
[0013] Preferably, a clutch is provided inside the fuel tank, and magnet plates are provided on the opposite surfaces of the round rod end that contact the clutch. The counterweight is located on the side away from the magnet plates. By providing a clutch, it is convenient to make the round rod end tilted and horizontally contact the clutch, so that when the round rod swings and pulls the clutch fork → the clutch friction plate is pressed together → power is transmitted from the engine / motor shaft to the fuel pump shaft → the fuel pump starts to work.
[0014] Preferably, the connection between the clutch and the oil supply pump is a purely mechanical hard connection, and the power transmission between the clutch and the oil supply pump is achieved through a flexible belt drive. The clutch shaft is equipped with a pulley → rubber belt → pump shaft pulley, which then starts the oil supply pump. The belt tension is adjusted by a tensioner to adapt to the speed requirements of different oil supply pumps.
[0015] The present invention has the following beneficial effects: This invention facilitates the delivery of fuel into the fuel tank through an inlet mechanism. Simultaneously, the automatic fuel supply pump is controlled by a circular rod that swings as the fuel level decreases and a clutch. When the internal pressure of the fuel tank is too high, the pressure inside the tank is released through a spring valve, and the tank is closed again when the pressure decreases. When the fuel temperature inside the fuel tank is low, the heating mechanism is activated to heat the fuel inside the fuel tank, preventing the fuel from solidifying and settling. Thus, the fuel supply pump used in the ship's fuel tank has the effect of automatic fuel supply. Attached Figure Description
[0016] Fig. 1 This is a schematic diagram of the front section structure of the present invention; Fig. 2 This is a front view structural diagram of the present invention; Fig. 3 This is a schematic diagram of the side section structure of the round rod in this invention.
[0017] In the diagram: 1. Fuel tank; 2. Spring valve; 3. Return pipe; 4. Fuel supply pump; 5. Inlet pipe; 6. Outlet pipe; 7. Circulation pipe; 8. Support rod; 9. Fixing base; 10. Round rod; 11. Float; 12. Counterweight; 13. Check valve; 14. Fuel delivery pipeline; 15. Circulation pump; 16. Bimetallic switch; 17. Heating element; 18. Positioning rod; 19. Limiting rod; 20. Clutch. Detailed Implementation
[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0019] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., 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 invention 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 invention.
[0020] Reference Figs. 1-3 An automatic fuel supply system for a marine fuel pump 4 includes a fuel tank 1 for storing fuel, a fuel delivery pipe 14 is provided below the fuel tank 1, and a main pump is connected to the bottom of the fuel tank 1 through the fuel delivery pipe 14. The fuel tank 1 is connected to the engine through the fuel delivery pipe 14 and the main pump. By providing the fuel delivery pipe 14, the fuel tank 1 can conveniently supply fuel to the engine in a timely manner.
[0021] The fuel tank 1 is equipped with a fuel inlet mechanism and a heating mechanism. The fuel tank 1 is also equipped with a spring valve 2, and a return pipe 3 is provided at the port of the spring valve 2. The fuel inlet mechanism includes a fuel supply pump 4 connected to one side of the fuel tank 1. The fuel supply pump 4 is equipped with a fuel inlet pipe 5 and a fuel outlet pipe 6. The end of the return pipe 3 away from the spring valve 2 is connected to and fixedly connected to the fuel inlet pipe 5. Both the return pipe 3 and the fuel outlet pipe 6 are equipped with one-way valves 13. By providing one-way valves 13 on the return pipe 3 and the fuel outlet pipe 6, it is easy to prevent fuel backflow.
[0022] Furthermore, each fuel tank 1 is provided with a hole that matches the inlet of the spring valve 2 and the outlet of the fuel pipe 6. By setting the spring valve 2, the fuel tank 1 can be made to have a pressure relief function. When the internal pressure of the fuel tank 1 is high, the fuel will push open the spring valve 2 and enter the return pipe 3. When the pressure drops, the spring valve 2 will close.
[0023] The heating mechanism includes a circulation pipe 7 connected to the other side of the fuel tank 1. A heating pipe 17 is installed inside the circulation pipe 7. At the same time, a temperature sensor is installed on the bottom wall of the fuel tank 1. The temperature sensor, the heating pipe 17 and the circulation pump 15 are all connected to a power supply and a thermostat. By installing the heating pipe 17 inside the circulation pipe 7, it is convenient to heat the fuel inside the circulation pipe 7.
[0024] A circulation pump 15 and a bimetallic switch 16 are respectively installed at both ends of the circulation pipe 7. Both ends of the circulation pipe 7 pass through the fuel tank 1 and are fixedly connected to the fuel tank 1. By setting the bimetallic switch 16, it is easy to control the opening and closing of the circulation pipe 7. When the fuel temperature is below 80°C, the bimetallic strip in the bimetallic switch is straight, the circulation pump 15 and the circulation pipe 7 are opened, and the fuel flows into the circulation pipe 7 for heating and circulation. When the fuel is heated to 120°C, the bimetallic strip bends to the maximum angle, and the valve is completely closed.
[0025] The fuel tank 1 is provided with two support rods 8, and fixed seats 9 are fixed on the support rods 8. A round rod 10 is rotatably connected to the fixed seats 9. There are two support rods 8 and two fixed seats 9. A positioning rod 18 is fixedly connected between the two fixed seats 9. The round rod 10 is sleeved on the positioning rod 18 and rotatably connected to the positioning rod 18. By setting the support rods 8, fixed seats 9 and positioning rod 18, it is easy to make its shape similar to a gantry. The round rod 10 swings on its positioning rod 18. The swing range of the round rod 10 is limited by the fixed seats 9 at both ends of the positioning rod 18.
[0026] The two ends of the round rod 10 are respectively provided with a float 11 and a counterweight 12. The top end of the round rod 10 is hinged to the float 11. The inner wall of the fuel tank 1 is provided with a limiting rod 19 for limiting the round rod 10. By providing the float 11, the round rod 10 can be placed approximately vertically in the fuel tank 1 containing fuel. The limiting rod 19 limits the swing direction of the round rod 10, so that it swings in one direction when the fuel level decreases.
[0027] The fuel tank 1 is equipped with a clutch 20, and the opposite surfaces of the end of the round rod 10 that contact the clutch 20 are equipped with magnet plates. The counterweight 12 is located on the side away from the magnet plates. By setting the clutch 20, it is convenient to make the end of the round rod 10 tilt and contact the clutch 20 horizontally. When the round rod 10 swings and pulls the clutch 20 shift fork, the clutch 20 friction plate is pressed, and the power is transmitted from the engine / motor shaft to the fuel pump 4 shaft, and the fuel pump 4 starts to work.
[0028] Furthermore, the connection between the clutch 20 and the oil supply pump 4 is a purely mechanical hard connection, and the power transmission between the clutch 20 and the oil supply pump 4 is achieved through a flexible belt drive. The clutch 20 shaft is equipped with a pulley → rubber belt → pump shaft pulley, which then starts the oil supply pump 4. The belt tension is adjusted by the tensioning wheel to adapt to the different speed requirements of the oil supply pump 4.
[0029] Furthermore, the mass m of the counterweight satisfies: m=k·ρ·V·sinθ Parameter description: k: Empirical safety factor (usually taken as 1.5 to 2.0), used to compensate for uncontrollable factors such as wave impact and mechanical friction.
[0030] ρ: Fuel density (unit: kg / m³) 3 For example, the density of heavy oil is approximately 850–1010 kg / m³. 3 .
[0031] V: Volume of fuel displaced by the float (unit: m³) 3 (), which is the volume of the float immersed in the oil.
[0032] θ: Maximum roll angle of the ship (unit: °), determined according to the ship type (e.g., cargo ships are usually taken as 15° to 25°).
[0033] The ratio of the weight of the float to the weight of the buoy: If the float is made of hollow stainless steel (density 8000 kg / m³) 3 Its mass m_buoy = 0.05 × 8000 = 400 kg.
[0034] Counterweight mass percentage: 27.8 ÷ 400 ≈ 7% That is, the counterweight is about 7% of the mass of the float.
[0035] Ratio to total system weight: If the total mass of the entire lever mechanism is 50kg Counterweight percentage: 27.8 ÷ 50 ≈ 55.6% This invention facilitates the delivery of fuel into the fuel tank through an inlet mechanism. Simultaneously, the automatic fuel supply pump is controlled by a circular rod that swings as the fuel level decreases and a clutch. When the internal pressure of the fuel tank is too high, the pressure inside the tank is released through a spring valve, and the tank is closed again when the pressure decreases. When the fuel temperature inside the fuel tank is low, the heating mechanism is activated to heat the fuel inside the fuel tank, preventing the fuel from solidifying and settling. Thus, the fuel supply pump used in the ship's fuel tank has the effect of automatic fuel supply.
[0036] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. An automatic fuel supply system for a marine fuel pump (4), comprising a fuel tank (1) for storing fuel oil, characterized in that, The fuel tank (1) is provided with an oil inlet mechanism and a heating mechanism. The fuel tank (1) is provided with a spring valve (2). The port of the spring valve (2) is provided with a return pipe (3). The oil inlet mechanism includes a fuel supply pump (4) connected to one side of the fuel tank (1). The fuel supply pump (4) is provided with an oil inlet pipe (5) and an oil outlet pipe (6). The heating mechanism includes a circulation pipe (7) connected to the other side of the fuel tank (1). The fuel tank (1) is provided with two support rods (8). The support rods (8) are fixed with a fixed seat (9). The fixed seat (9) is rotatably connected with a round rod (10). The two ends of the round rod (10) are respectively provided with a float (11) and a counterweight (12).
2. The automatic fuel supply system for a ship fuel pump (4) according to claim 1, characterized in that: The end of the return pipe (3) away from the spring valve (2) is connected to the oil inlet pipe (5) and fixedly connected, and both the return pipe (3) and the oil outlet pipe (6) are equipped with one-way valves (13).
3. The automatic fuel supply system for a ship fuel pump (4) according to claim 1, characterized in that: Each fuel tank (1) has a hole that matches the inlet of the spring valve (2) and the outlet of the oil pipe (6).
4. The automatic fuel supply system for a ship fuel pump (4) according to claim 1, characterized in that: The fuel tank (1) is provided with an oil supply pipe (14) and the bottom of the fuel tank (1) is connected to the main pump through the oil supply pipe (14). The fuel tank (1) is connected to the engine through the oil supply pipe (14) and the main pump.
5. The automatic fuel supply system for a ship fuel pump (4) according to claim 1, characterized in that: A circulation pump (15) and a bimetallic switch (16) are respectively installed at both ends of the circulation pipe (7). Both ends of the circulation pipe (7) pass through the fuel tank (1) and are fixedly connected to the fuel tank (1).
6. The automatic fuel supply system for a ship fuel pump (4) according to claim 1, characterized in that: The circulation pipe (7) is equipped with a heating pipe (17), and both the heating pipe (17) and the circulation pump (15) are connected to a power supply and a temperature controller.
7. The automatic fuel supply system for a ship fuel pump (4) according to claim 1, characterized in that: The number of the support rod (8) and the fixed seat (9) are both two, and a positioning rod (18) is fixedly connected between the two fixed seats (9). The round rod (10) is sleeved on the positioning rod (18) and rotatably connected to the positioning rod (18).
8. The automatic fuel supply system for a ship fuel pump (4) according to claim 1, characterized in that: The top end of the round rod (10) is hinged to the float (11), and the inner wall of the fuel tank (1) is provided with a limiting rod (19) for the limiting round rod (10).
9. The automatic fuel supply system for a ship fuel pump (4) according to claim 1, characterized in that: The fuel tank (1) is equipped with a clutch (20), and the opposite surfaces of the end of the round rod (10) and the clutch (20) are equipped with magnet plates. The counterweight (12) is located on the side away from the magnet plates.
10. The automatic fuel supply system for a ship fuel pump (4) according to claim 1, characterized in that: The clutch (20) and the oil pump (4) transmit power through a flexible belt drive.