A fuel tank for a diesel generator set

Abstract

The present invention discloses a fuel tank for a diesel generator set, specifically relating to the technical field of fuel tanks, comprising a main fuel tank, wherein the top of the main fuel tank is connected to an oil inlet pipe, and the oil inlet pipes are provided with a plurality of auxiliary fuel tanks corresponding to the oil inlet pipes are provided on the top of the main fuel tank, the top of the auxiliary fuel tank is provided with an oil inlet and an auxiliary air inlet pipe, and the bottom of the auxiliary fuel tank is provided with an oil delivery pipe connected to the oil inlet pipe; by arranging the main fuel tank and the auxiliary fuel tank, the unused diesel in the main fuel tank can be recovered into the auxiliary fuel tank through a recovery mechanism for storage, thereby realizing the decomposition into parts, and the auxiliary fuel tank can be disassembled at will so that the unused diesel can be used elsewhere; when recovering the diesel, it is only necessary to turn a hand wheel, and when adjusting the nozzle to correspond to the auxiliary fuel tanks in different positions, it is only necessary to press the pedal and turn the hand wheel; the overall operation is simple, and is cleaner and simpler than the traditional method of extracting diesel from the fuel tank by using a hose and a siphon principle.

Description

Technical Field

[0001] The present invention relates to the field of oil tanks, and in particular to an oil tank for a diesel generator set. Background Art

[0002] The fuel tank of a diesel generator set is generally made of metal steel plates, which includes refueling components, oil outlet components and oil supply components, oil level monitoring components, ventilation components and air pressure regulating components, sewage discharge components and impurity treatment components, etc.

[0003] The fuel tanks of diesel generator sets currently on the market are relatively large. When the unused diesel inside needs to be recovered, a hose must be used in conjunction with the siphon principle to extract the diesel inside the tank. Due to the liquid level difference, only part of the diesel in the upper half of the tank can be absorbed, and it is impossible to completely extract it. In addition, during the process of changing the container, the diesel is prone to spillage and contamination. Summary of the Invention

[0004] The object of the present invention is to provide a fuel tank for a diesel generator set to solve the above-mentioned deficiencies in the technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a fuel tank for a diesel generator set, comprising a main fuel tank, wherein the top of the main fuel tank is connected to an oil inlet pipe, wherein the oil inlet pipes are provided in plurality, and the top of the main fuel tank is provided with a plurality of auxiliary fuel tanks corresponding to the oil inlet pipes, wherein the top of the auxiliary fuel tank is provided with an oil inlet and an auxiliary air inlet pipe, and the bottom of the auxiliary fuel tank is provided with an oil delivery pipe connected to the oil inlet pipe;

[0006] A component box is fixed to the back of the main oil tank, a fixing frame is fixed to one side of the component box at the back of the auxiliary oil tank, and a recovery mechanism is provided inside the component box for recovering unused diesel in the main oil tank into the auxiliary oil tank.

[0007] Preferably, the top of the main fuel tank is connected to the main air inlet pipe on one side close to the oil inlet pipe, and the side of the main fuel tank is connected to the oil return pipe near its top, and the bottom of the main fuel tank is inclined, wherein a drain pipe is connected to the bottom of the main fuel tank, and the side of the bottom of the main fuel tank away from the drain pipe is connected to the oil outlet pipe.

[0008] Preferably, the top of the main oil tank is located at the four corners of the bottom of the auxiliary oil tank and is fixed with positioning rings, the four corners of the bottom of the auxiliary oil tank are provided with positioning columns matching the positioning rings, the diameter of the oil delivery pipe matches the inner diameter of the oil inlet pipe, and valves are installed on the drain pipe, oil outlet pipe, oil inlet pipe, main air inlet pipe, auxiliary air inlet pipe and oil delivery pipe.

[0009] Preferably, the recovery mechanism includes a piston cylinder fixed inside the element box, a piston is provided inside the piston cylinder, a piston rod is connected to the top of the piston, a reciprocating motion assembly for controlling the up and down reciprocating motion of the piston rod is provided inside the element box, an oil extraction pipe is connected to one side of the bottom of the piston cylinder, the end of the oil extraction pipe passes through the element box and is connected to the main oil tank, an oil inlet check valve is installed on the oil extraction pipe, an oil injection pipe is connected to one side of the piston cylinder, and an oil outlet check valve is installed on the oil injection pipe;

[0010] A horizontally movable block is provided inside the fixed frame, an L-shaped conduit is fixed to one side of the movable block, a nozzle is installed on one side of the L-shaped conduit above the oil inlet, and the end of the oil injection pipe is connected to the L-shaped conduit through a hose.

[0011] Preferably, a filter cartridge is installed on one side of the component box, both ends of the filter cartridge are connected to a hose and an L-shaped conduit respectively, and a filter element for filtering diesel is installed inside the filter cartridge.

[0012] Preferably, a guide column is fixed laterally inside the fixed frame, and a screw rod is connected to the inside of the fixed frame on one side of the guide column through a rotating shaft. The guide column passes through the movable block, and the screw rod is threadedly connected to the movable block, and one end of the screw rod is connected to the reciprocating motion assembly through a transmission assembly.

[0013] Preferably, the reciprocating motion assembly includes a rotating rod, the rotating rod is connected to the component box through a bearing, the outer portion of the rotating rod is located inside the component box and is equipped with a cam, and one end of the rotating rod extends to the outside of the component box and is equipped with a handwheel;

[0014] A fixing frame is fixed inside the component box below the cam, and a round hole for the piston rod to pass through is provided inside the fixing frame. The top end of the piston rod passes through the round hole and is installed with a roller. The roller is located below the cam. A limiting ring is fixed to the outside of the top of the piston rod, and a spring is provided on the outside of the piston rod between the limiting ring and the fixing frame.

[0015] Preferably, the transmission assembly includes two support plates, both of which are fixed to the inner top of the component box, and a main shaft is fixed between the two component boxes. The outer portion of the main shaft is rotatably connected to two arc-shaped connecting arms through bearings, and a torsion spring is installed between the support plates and the connecting arms.

[0016] A secondary shaft is rotatably connected between the two connecting arms via a bearing, and two transmission gears are fixed to the outside of the secondary shaft;

[0017] One end of the screw rod extends to the interior of the component box and is fixed with a driven gear, and one end of the rotating rod relative to the hand wheel is fixed with a driving gear, and two transmission gears are respectively located above one side of the driving gear and the driven gear.

[0018] Preferably, a traction assembly for pulling the connecting arm to rotate around the main shaft is provided inside the component box;

[0019] The traction assembly includes a fixed rod, which is fixed to the inner bottom of the component box. The fixed rod is provided with a slip ring that can move up and down and rotate. A pedal is fixed to one side of the slip ring. A pull rope is connected between the pedal and the secondary shaft rod. A guide tube is fixed to the inner wall of the component box below one side of the connecting arm. The pull rope passes through the guide tube. The outer wall of the component box is provided with an L-shaped slot for moving the pedal.

[0020] Preferably, a three-way valve is installed on the fuel injection pipe on one side of the oil outlet one-way valve, the third end of the three-way valve is connected to the main oil tank through a pipeline, a fixed plate is fixed on the valve stem of the three-way valve, a slide rail is fixed on the top of the fixed plate, a sleeve is fixed on the bottom of the fixed plate, the pull rope passes through the sleeve, a slider is connected to the inside of the slide rail, the top of the slider is connected to a tension spring through a rotating seat, and the end of the tension spring is connected to the inner wall of the component box through a rotating seat.

[0021] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0022] By setting up a main fuel tank and an auxiliary fuel tank, the unused diesel in the main fuel tank can be recovered into the auxiliary fuel tank through a recovery mechanism for storage, realizing the breakdown of the whole into parts, and the auxiliary fuel tank can be disassembled at will so that the unused diesel can be used elsewhere. When recovering the diesel, it is only necessary to turn the handwheel, and when adjusting the nozzle to correspond to the auxiliary fuel tank in different positions, it is only necessary to press the pedal and turn the handwheel. The overall operation is simple, which is cleaner and simpler than the traditional method of extracting diesel from the fuel tank using a hose and siphon principle. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1 This is one of the appearance diagrams of the present invention;

[0025] Figure 2 This is the second appearance diagram of the present invention;

[0026] Figure 3This is a structural schematic diagram of the top of the main fuel tank of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the auxiliary fuel tank of the present invention;

[0028] Figure 5 It is a cross-sectional view of the fixing frame and the component box as a whole of the present invention;

[0029] Figure 6 This is a schematic diagram of the internal structure of the fixing frame of the present invention;

[0030] Figure 7 Schematic diagram of the internal structure of the component box of the present invention;

[0031] Figure 8 It is a structural schematic diagram of the reciprocating motion assembly of the present invention;

[0032] Figure 9 It is a structural schematic diagram of the pull rope layout of the present invention;

[0033] Figure 10 Schematic diagram of the structure of the connecting arm of the present invention;

[0034] Figure 11 It is a structural schematic diagram of the slide rail of the present invention.

[0035] Description of reference numerals:

[0036] 1. Main fuel tank; 2. Drain pipe; 3. Oil outlet pipe; 4. Oil return pipe; 5. Oil inlet pipe; 6. Main air intake pipe; 7. Auxiliary fuel tank; 8. Oil inlet port; 9. Auxiliary air intake pipe; 10. Oil delivery pipe; 11. Component box; 12. L-shaped guide tube; 13. Nozzle; 14. Pedal; 15. L-shaped slot; 16. Filter cartridge; 17. Fixing frame; 18. Handwheel; 19. Locating ring; 20. Locating column; 21. Movable block; 22. Guide column; 23. Screw; 24. Spindle rod; 25. Rotating rod; 26. Cam; 27. Fixing bracket ; 28. Piston rod; 29. ​​Piston cylinder; 30. Oil extraction pipe; 31. Oil injection pipe; 32. Driving gear; 33. Driven gear; 34. Connecting arm; 35. Countershaft; 36. Transmission gear; 37. Spring; 38. Limiting ring; 39. Roller; 40. Tension spring; 41. Three-way valve; 42. Fixed plate; 43. Sleeve; 44. Slide rail; 45. Slider; 46. Fixed rod; 47. Torsion spring; 48. Pull rope; 49. Oil outlet one-way valve; 50. Oil inlet one-way valve; 51. Guide pipe; 52. Support plate. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0038] The present invention provides Figures 1-11The fuel tank for a diesel generator set shown in the figure includes a main fuel tank 1. The top of the main fuel tank 1 is connected to an oil inlet pipe 5. There are several oil inlet pipes 5. The top of the main fuel tank 1 is provided with several auxiliary fuel tanks 7 corresponding to the oil inlet pipes 5. The top of the auxiliary fuel tank 7 is provided with an oil inlet 8 and an auxiliary air inlet pipe 9. The bottom of the auxiliary fuel tank 7 is provided with an oil delivery pipe 10 connected to the oil inlet pipe 5.

[0039] A component box 11 is fixed to the back of the main fuel tank 1, and a fixing frame 17 is fixed to the back of the auxiliary fuel tank 7 on one side of the component box 11. A recovery mechanism is provided inside the component box 11 for recovering unused diesel in the main fuel tank 1 back into the auxiliary fuel tank 7.

[0040] Furthermore, the top of the main fuel tank 1 is connected to the main air inlet pipe 6 on one side near the oil inlet pipe 5, and the side of the main fuel tank 1 near its top is connected to the oil return pipe 4, and the bottom of the main fuel tank 1 is inclined, wherein the bottom of the main fuel tank 1 is connected to the drain pipe 2, and the bottom of the main fuel tank 1 is connected to the side away from the drain pipe 2. The oil outlet pipe 3 is connected to the main fuel tank 1 with its bottom inclined.

[0041] Furthermore, positioning rings 19 are fixed at the top of the main fuel tank 1 and the four corners of the bottom of the auxiliary fuel tank 7. Positioning columns 20 matching the positioning rings 19 are provided at the four corners of the bottom of the auxiliary fuel tank 7. The diameter of the oil delivery pipe 10 matches the inner diameter of the oil inlet pipe 5. Valves are installed on the drain pipe 2, the oil outlet pipe 3, the oil inlet pipe 5, the main air intake pipe 6, the auxiliary air intake pipe 9 and the oil delivery pipe 10. The opening and closing states of each "oil pipe" can be controlled by the valves. The positioning columns 20 and the positioning rings 19 can stably prevent the auxiliary fuel tank 7 from being on the top of the main fuel tank 1 and ensure that the oil delivery pipe 10 can be accurately docked with the oil inlet pipe 5 (the diesel inside the auxiliary fuel tank 7 can be quickly introduced into the main fuel tank 1 through the oil delivery pipe 10 and the oil inlet pipe 5, and the main air intake pipe 6 and the auxiliary air intake pipe 9 can balance the air pressure inside the main fuel tank 1 and the auxiliary fuel tank 7 to improve the stability of the diesel generator set when using oil).

[0042] During the use of the diesel generator, the oil outlet pipe 3 and the oil return pipe 4 are connected to the oil inlet channel and the oil return channel of the diesel generator through the pipeline, and then diesel is poured into the interior of the main fuel tank 1 for the diesel generator to generate electricity (the main fuel tank 1 is equipped with a refueling port, the location of the refueling port can be referred to Figure 1 , which is located between the main air intake pipe 6 and the component box 11. As for the diesel level display, an observation window can be set on the main fuel tank 1. The above are all designs of conventional diesel engine tanks and will not be repeated here).

[0043] Reference Figure 4-11The recovery mechanism includes a piston cylinder 29 fixed inside the component box 11, a piston is provided inside the piston cylinder 29, the top of the piston is connected to the piston rod 28, and a reciprocating motion component for controlling the up and down reciprocating motion of the piston rod 28 is provided inside the component box 11. An oil extraction pipe 30 is connected to one side of the bottom of the piston cylinder 29, and the end of the oil extraction pipe 30 passes through the component box 11 and is connected to the main oil tank 1. An oil inlet check valve 50 is installed on the oil extraction pipe 30, and an oil injection pipe 31 is connected to one side of the piston cylinder 29, and an oil outlet check valve 49 is installed on the oil injection pipe 31;

[0044] A horizontally movable movable block 21 is provided inside the fixed frame 17, an L-shaped conduit 12 is fixed to one side of the movable block 21, a nozzle 13 is installed on one side of the L-shaped conduit 12 above the oil inlet 8, and the end of the oil injection pipe 31 is connected to the L-shaped conduit 12 through a hose.

[0045] Furthermore, a filter cartridge 16 is installed on one side of the component box 11 , both ends of the filter cartridge 16 are respectively connected to the hose and the L-shaped conduit 12 , and a filter element for filtering diesel is installed inside the filter cartridge 16 .

[0046] Furthermore, a guide column 22 is fixed laterally inside the fixed frame 17, and a screw rod 23 is connected to the inside of the fixed frame 17 on one side of the guide column 22 through a rotating shaft. The guide column 22 passes through the movable block 21, and the screw rod 23 is threadedly connected to the movable block 21, and one end of the screw rod 23 is connected to the reciprocating motion assembly through a transmission assembly.

[0047] When the diesel inside the diesel generator set is not completely used and needs to be recovered, the hand wheel 18 drives the rotating rod 25 to rotate, thereby driving the cam 26 to rotate. In conjunction with the spring 37 and the limit ring 38, the piston rod 28 can be reciprocated up and down during the rotation of the cam 26. The roller 39 can reduce the wear of the cam 26 on the piston rod 28.

[0048] When the piston rod 28 moves upward, the piston inside the piston cylinder 29 also moves upward synchronously with the piston rod 28. When the piston moves upward inside the piston cylinder 29, it draws diesel from the main fuel tank 1 into the piston cylinder 29 through the oil extraction pipe 30. (Due to the presence of the oil inlet check valve 50, the diesel that has entered the piston cylinder 29 cannot return to the main fuel tank 1 through the oil extraction pipe 30.)

[0049] When the piston rod 28 moves downward, the piston inside the piston cylinder 29 also moves downward synchronously with the piston rod 28. When the piston moves downward inside the piston cylinder 29, it will forcibly push the diesel fuel inside the piston cylinder 29 into the fuel injection pipe 31 (due to the action of the oil outlet one-way valve 49, the diesel fuel that has entered the fuel injection pipe 31 cannot flow into the interior of the piston cylinder 29);

[0050] By repeating this cycle, the remaining diesel in the main tank 1 can be continuously pumped to the fuel injection pipe 31, thereby realizing the diesel recovery operation. Since the fuel injection pipe 31 is connected to the L-shaped conduit 12, the diesel will be sprayed out through the nozzle 13 and enter the auxiliary fuel tank 7 from the fuel inlet 8, thereby completing the diesel recovery process (during the recovery process, the valve on the fuel inlet pipe 5 needs to be closed to ensure that the diesel in the auxiliary fuel tank 7 can be stably stored, and when the diesel passes through the fuel injection pipe 31, it will be filtered by the filter element inside the filter cartridge 16, thereby improving the cleanliness of the diesel when it is recovered).

[0051] Reference Figure 7-11 The reciprocating motion assembly includes a rotating rod 25, which is connected to the component box 11 through a bearing. The outer portion of the rotating rod 25 is located inside the component box 11 and is equipped with a cam 26. One end of the rotating rod 25 extends to the outside of the component box 11 and is equipped with a handwheel 18.

[0052] A fixing frame 27 is fixed inside the component box 11 below the cam 26. A circular hole for the piston rod 28 to pass through is provided inside the fixing frame 27. The top end of the piston rod 28 passes through the circular hole and is installed with a roller 39. The roller 39 is located below the cam 26. A limiting ring 38 is fixed to the outside of the top of the piston rod 28, and a spring 37 is provided on the outside of the piston rod 28 between the limiting ring 38 and the fixing frame 27.

[0053] Furthermore, the transmission assembly includes two support plates 52, both of which are fixed to the inner top of the component box 11. A main shaft 24 is fixed between the two component boxes 11. The outer portion of the main shaft 24 is rotatably connected to two arc-shaped connecting arms 34 through bearings. A torsion spring 47 is installed between the support plates 52 and the connecting arms 34.

[0054] A countershaft 35 is rotatably connected between the two connecting arms 34 via a bearing, and two transmission gears 36 are fixed to the outside of the countershaft 35;

[0055] One end of the screw rod 23 extends to the interior of the component box 11 and is fixed with a driven gear 33. The end of the rotating rod 25 relative to the handwheel 18 is fixed with a driving gear 32. Two transmission gears 36 are respectively located above one side of the driving gear 32 and the driven gear 33.

[0056] Specifically, a traction assembly for pulling the connecting arm 34 to rotate around the main shaft 24 is provided inside the component box 11;

[0057] The traction assembly includes a fixed rod 46, which is fixed to the inner bottom of the component box 11. The fixed rod 46 is provided with a slip ring that can move up and down and rotate. A pedal 14 is fixed to one side of the slip ring. A pull rope 48 is connected between the pedal 14 and the secondary shaft rod 35. A guide tube 51 is fixed to the inner wall of the component box 11 below one side of the connecting arm 34. The pull rope 48 passes through the guide tube 51. The outer wall of the component box 11 is provided with an L-shaped slot 15 for moving the pedal 14.

[0058] Specifically, a three-way valve 41 is installed on the fuel injection pipe 31 on one side of the oil outlet one-way valve 49. The third end of the three-way valve 41 is connected to the main oil tank 1 through a pipeline. A fixed plate 42 is fixed on the valve stem of the three-way valve 41. A slide rail 44 is fixed to the top of the fixed plate 42. A sleeve 43 is fixed to the bottom of the fixed plate 42. A pull rope 48 passes through the sleeve 43. A slider 45 is slidably connected to the inside of the slide rail 44. The top of the slider 45 is connected to a tension spring 40 through a rotating seat. The end of the tension spring 40 is connected to the inner wall of the component box 11 through a rotating seat.

[0059] When the amount of diesel remaining in the main tank 1 is large and needs to be recovered, several auxiliary tanks 7 can be placed on top of the main tank 1 at the same time. When one of the auxiliary tanks 7 is filled with diesel, the staff can directly press the pedal 14 downward and rotate the pedal 14 to the "horizontal section" of the L-shaped slot 15 at the bottom end of the L-shaped slot 15;

[0060] Then turn the hand wheel 18;

[0061] When the pedal 14 is stepped on to the bottom of the L-shaped slot 15, the pull rope 48 pulls the secondary shaft 35 (the pull rope 48 and the secondary shaft 35 are provided with a bearing, the pull rope 48 is connected to the outer ring of the bearing, and the inner ring of the bearing is fixed to the secondary shaft 35 to prevent the secondary shaft 35 from causing the pull rope 48 to be entangled). Then the secondary shaft 35 drives the connecting arm 34 to rotate around the main shaft 24, thereby causing the two transmission gears 36 to mesh with the driving gear 32 and the driven gear 33 respectively, so that the subsequent rotating rod 25 can drive the screw rod 23 to rotate;

[0062] At the same time, the pull rope 48 cooperates with the sleeve 43 to drive the fixed plate 42 to rotate 90 degrees, thereby changing the state of the three-way valve 41, so that the oil ejected from the piston cylinder 29 through the oil outlet check valve 49 can return to the main oil tank 1 again;

[0063] During the rotation of the hand wheel 18, the screw rod 23 also rotates synchronously, and cooperates with the guide column 22 to adjust the movable block 21 and the L-shaped guide tube 12 to move as a whole, so that the nozzle 13 can "recover diesel" from different auxiliary tanks 7. Due to the presence of the three-way valve 41, there is no need to worry about "accidental leakage" of diesel during the movement of the nozzle 13.

[0064] When the nozzle 13 is moved again to above the other auxiliary fuel tank 7, the pedal 14 can be pushed out from the horizontal section of the L-shaped slot 15. Under the action of the torsion spring 47, the connecting arm 34 can be reset, and the two transmission gears 36 can be separated from the driving gear 32 and the driven gear 33, thereby locking the position of the nozzle 13 to improve the stability of the subsequent diesel recovery operation. At the same time, under the action of the tension spring 40, the slider 45 can be reset, and the fixing plate 42 can be rotated 90 degrees to the original direction to reset (because the valve stem of the three-way valve 41 is fixed to the fixing plate 42, the passage state of the three-way valve 41 can be controlled by controlling the rotation angle of the fixing plate 42), ensuring that the fuel injection pipe 31 can receive the diesel sprayed by the piston cylinder 29 again, thereby performing the diesel recovery operation on another auxiliary fuel tank 7.

[0065] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A fuel tank for a diesel generator set, comprising a main fuel tank (1), wherein the top of the main fuel tank (1) is connected to an oil inlet pipe (5), characterized in that: A plurality of oil inlet pipes (5) are provided, and a plurality of auxiliary oil tanks (7) corresponding to the oil inlet pipes (5) are provided on the top of the main oil tank (1). An oil inlet (8) and an auxiliary air inlet pipe (9) are provided on the top of the auxiliary oil tank (7), and an oil delivery pipe (10) connected to the oil inlet pipe (5) is provided on the bottom of the auxiliary oil tank (7); A component box (11) is fixed to the back of the main oil tank (1), a fixing frame (17) is fixed to one side of the component box (11) located at the back of the auxiliary oil tank (7), and a recovery mechanism for recovering unused diesel from the main oil tank (1) back into the auxiliary oil tank (7) is provided inside the component box (11).

2. A fuel tank for a diesel generator set according to claim 1, characterized in that: The main oil tank (1) is connected to a main air inlet pipe (6) on one side of the top close to the oil inlet pipe (5), and is connected to an oil return pipe (4) on one side of the main oil tank (1) close to the top thereof, and the bottom of the main oil tank (1) is arranged in an inclined manner, wherein a sewage pipe (2) is connected to the bottom of the main oil tank (1), and an oil outlet pipe (3) is connected to the side of the bottom of the main oil tank (1) away from the sewage pipe (2).

3. A fuel tank for a diesel generator set according to claim 2, characterized in that: The top of the main oil tank (1) is located at the four corners of the bottom of the auxiliary oil tank (7), and positioning rings (19) are fixed thereto. The four corners of the bottom of the auxiliary oil tank (7) are provided with positioning columns (20) that match the positioning rings (19). The diameter of the oil delivery pipe (10) matches the inner diameter of the oil inlet pipe (5). Valves are installed on the sewage pipe (2), the oil outlet pipe (3), the oil inlet pipe (5), the main air inlet pipe (6), the auxiliary air inlet pipe (9) and the oil delivery pipe (10).

4. The fuel tank for a diesel generator set according to claim 1, characterized in that: The recovery mechanism includes a piston cylinder (29) fixed inside the component box (11), a piston is provided inside the piston cylinder (29), the top of the piston is connected to a piston rod (28), a reciprocating motion assembly for controlling the up and down reciprocating motion of the piston rod (28) is provided inside the component box (11), a bottom side of the piston cylinder (29) is connected to an oil extraction pipe (30), the end of the oil extraction pipe (30) passes through the component box (11) and is connected to the main oil tank (1), an oil inlet check valve (50) is installed on the oil extraction pipe (30), a side of the piston cylinder (29) is connected to an oil injection pipe (31), and an oil outlet check valve (49) is installed on the oil injection pipe (31); A horizontally movable movable block (21) is provided inside the fixed frame (17), an L-shaped conduit (12) is fixed to one side of the movable block (21), a nozzle (13) is installed on one side of the L-shaped conduit (12) above the oil inlet (8), and the end of the oil injection pipe (31) is connected to the L-shaped conduit (12) through a hose.

5. The fuel tank for a diesel generator set according to claim 4, characterized in that: A filter cartridge (16) is installed on one side of the component box (11), and both ends of the filter cartridge (16) are respectively connected to the hose and the L-shaped conduit (12), and a filter element for filtering diesel is installed inside the filter cartridge (16).

6. The fuel tank for a diesel generator set according to claim 4, characterized in that: A guide post (22) is transversely fixed inside the fixed frame (17), and a screw rod (23) is rotatably connected to one side of the guide post (22) inside the fixed frame (17) via a rotating shaft. The guide post (22) passes through the movable block (21), and the screw rod (23) is threadedly connected to the movable block (21), and one end of the screw rod (23) is connected to the reciprocating motion assembly via a transmission assembly.

7. The fuel tank for a diesel generator set according to claim 6, characterized in that: The reciprocating motion assembly includes a rotating rod (25), the rotating rod (25) is connected to the component box (11) through a bearing, the outside of the rotating rod (25) is located inside the component box (11) and is equipped with a cam (26), and one end of the rotating rod (25) extends to the outside of the component box (11) and is equipped with a handwheel (18); A fixing frame (27) is fixed inside the component box (11) below the cam (26), and a circular hole for the piston rod (28) to pass through is provided inside the fixing frame (27). The top end of the piston rod (28) passes through the circular hole and is installed with a roller (39), and the roller (39) is located below the cam (26). A limiting ring (38) is fixed on the outside of the top of the piston rod (28), and a spring (37) is provided on the outside of the piston rod (28) between the limiting ring (38) and the fixing frame (27).

8. The fuel tank for a diesel generator set according to claim 7, characterized in that: The transmission assembly includes two support plates (52), both of which are fixed to the inner top of the component box (11), and a main shaft (24) is fixed between the two component boxes (11), the outer portion of the main shaft (24) is rotatably connected to two arc-shaped connecting arms (34) through bearings, and a torsion spring (47) is installed between the support plate (52) and the connecting arm (34); A secondary shaft (35) is rotatably connected between the two connecting arms (34) via a bearing, and two transmission gears (36) are fixed to the outside of the secondary shaft (35); One end of the screw rod (23) extends into the interior of the component box (11) and is fixed with a driven gear (33). One end of the rotating rod (25) relative to the hand wheel (18) is fixed with a driving gear (32). Two transmission gears (36) are respectively located above one side of the driving gear (32) and the driven gear (33).

9. The fuel tank for a diesel generator set according to claim 8, characterized in that: A traction assembly for traction of the connecting arm (34) to rotate around the main shaft (24) is provided inside the component box (11); The traction assembly includes a fixed rod (46), the fixed rod (46) is fixed to the inner bottom of the component box (11), the fixed rod (46) is provided with a slip ring that can move up and down and rotate, a pedal (14) is fixed to one side of the slip ring, a pull rope (48) is connected between the pedal (14) and the secondary shaft (35), a guide tube (51) is fixed to the inner wall of the component box (11) below one side of the connecting arm (34), the pull rope (48) passes through the guide tube (51), and an L-shaped slot (15) for moving the pedal (14) is opened on the outer wall of the component box (11).

10. The fuel tank for a diesel generator set according to claim 9, characterized in that: A three-way valve (41) is installed on one side of the oil outlet one-way valve (49) on the oil injection pipe (31). The third end of the three-way valve (41) is connected to the main oil tank (1) through a pipeline. A fixed plate (42) is fixed on the valve stem of the three-way valve (41). A slide rail (44) is fixed on the top of the fixed plate (42). A sleeve (43) is fixed on the bottom of the fixed plate (42). The pull rope (48) passes through the sleeve (43). A slider (45) is slidably connected inside the slide rail (44). The top of the slider (45) is connected to a tension spring (40) through a rotating seat. The end of the tension spring (40) is connected to the inner wall of the component box (11) through the rotating seat.

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