Automatic fuel oil supply system for multi-diesel generator carrier vehicle

Abstract

The invention relates to an automatic fuel oil supply system for a vehicle with multiple diesel generators, belongs to the technical field of engine oil supply, and solves the problems of limited storage space and insufficient fuel oil supply of an oil tank in the prior art. Comprising an auxiliary oil tank, a main oil tank and a communicating pipe for communicating the main oil tank with the auxiliary oil tank, the upper part of the main oil tank is communicated with an engine oil inlet pipe and an engine oil return pipe; a first filling port and a first breather pipe are arranged at the upper part of the auxiliary oil tank; a second filling port and a second breather pipe are arranged on the upper portion of the main oil tank. Oil is supplied through the main oil tank and the auxiliary oil tank at the same time, the fuel storage amount is increased, and the service time is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of oil supply systems, and in particular to an automatic fuel supply system for a vehicle carrying multiple diesel generators. Background Art

[0002] Large diesel generator vehicles require sufficient fuel supply. The fuel tank is arranged on the chassis, but the chassis space is limited, so dual fuel tanks are needed to maximize the fuel storage capacity to support the consumption of the diesel generator set; the installation of auxiliary fuel tanks can effectively improve the vehicle's endurance, but most vehicles need to operate the main and auxiliary fuel tanks to switch, which is inconvenient to use and operate. Although there are auxiliary fuel tanks, they are cumbersome to use and cannot achieve a high degree of automation.

[0003] In the current dual-tank fuel supply system, the volume of the main tank is larger than that of the auxiliary tank. When in use, the fuel in the main tank is used first. The fuel in the auxiliary tank is mainly used for emergencies and has not been raised to the same importance as the main tank. The actual fuel filling amount is still mainly based on the volume of the main tank, and the endurance effect is poor.

[0004] At the same time, when heavy vehicles are equipped with power-consuming equipment, such as field detection equipment, it is necessary to maintain the long-term parallel use of multiple diesel generator sets, requiring timely and convenient fuel filling to solve the needs of large fuel consumption. If each vehicle has two fuel tanks, and multiple vehicles have multiple fuel tanks, the general method of filling can only be to fill the fuel tank ports one by one, which is inefficient. The filling process requires moving the fuel truck and dragging the fuel gun back and forth many times, which is very inconvenient in actual use.

[0005] Therefore, it is necessary to provide a fuel supply system for a diesel generator set to improve the endurance of the fuel. Summary of the invention

[0006] In view of the above analysis, the present invention aims to provide an automatic fuel supply system for multiple diesel generators on a vehicle, so as to solve the problem of insufficient fuel supply when multiple diesel generator sets work for a long time.

[0007] The purpose of the present invention is mainly achieved through the following technical solutions:

[0008] A fuel automatic supply system for a vehicle carrying multiple diesel generators comprises: an auxiliary fuel tank, a main fuel tank and a connecting pipe for connecting the main fuel tank and the auxiliary fuel tank; the upper part of the main fuel tank is connected to the engine fuel inlet pipe and the engine fuel return pipe; the upper part of the auxiliary fuel tank is provided with a first filling port and a first ventilation pipe; the upper part of the main fuel tank is provided with a second filling port and a second ventilation pipe.

[0009] Furthermore, a Venturi tube is arranged inside the main oil tank.

[0010] Furthermore, the venturi tube is simultaneously connected to the main oil tank, the connecting pipe and the engine oil inlet pipe.

[0011] Furthermore, the Venturi tube is vertically arranged at the bottom of the inner cavity of the main oil tank, and there is a distance between the Venturi tube and the bottom of the main oil tank.

[0012] Furthermore, the venturi tube includes a small-diameter section and a large-diameter section which are connected to each other; the small-diameter section is connected to the engine oil inlet pipe; and the large-diameter section is connected to the inner cavity of the main oil tank.

[0013] Furthermore, an L-shaped connecting branch pipe is provided on the side of the venturi tube.

[0014] Furthermore, the connecting branch pipe is used to connect the Venturi tube and the connecting pipe.

[0015] Furthermore, a one-way valve is provided on the connecting pipe.

[0016] Furthermore, the one-way valve is used to limit the flow direction of the fuel so that the fuel can only flow from the auxiliary fuel tank to the main fuel tank.

[0017] A method for automatically supplying fuel adopts the above-mentioned automatic fuel supply system for multiple diesel generator vehicles.

[0018] The technical solution of the present invention can achieve at least one of the following effects:

[0019] The automatic fuel supply system can effectively solve the problem of fuel filling efficiency. Each vehicle has dual fuel tanks, and only the auxiliary fuel tank needs to be filled to realize the filling of both tanks, thus ensuring the long-term use of the fuel supply system.

[0020] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings are only for the purpose of illustrating specific embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like components throughout the drawings.

[0022] Figure 1 The automatic fuel supply system for multiple diesel generator vehicles of the present invention;

[0023] Figure 2 The automatic refueling state of the automatic fuel supply system for multiple diesel generator vehicles of the present invention;

[0024] Figure 3It is a schematic diagram of the structure of the actuator;

[0025] Figure 4 It is a schematic diagram of the structural composition of the adsorption component;

[0026] Figure 5 is a schematic diagram of the structural composition of the second locking structure;

[0027] Figure 6 It is a schematic diagram of the unlocking process of the lock structure;

[0028] Figure 7 Schematic diagram of the locking state of the lock structure.

[0029] Reference numerals:

[0030] 1- auxiliary fuel tank; 2- main fuel tank; 3- connecting pipe; 4- engine fuel inlet pipe; 5- engine fuel return pipe; 6- venturi tube; 7- connecting branch pipe; 8- actuator; 9- fuel gun;

[0031] 101 - first filling port; 102 - first ventilation pipe; 201 - second filling port; 202 - second ventilation pipe;

[0032] 81-C-shaped fixing piece; 82-fastening bolt; 83-mechanism bracket; 84-first locking structure; 85-locking bracket; 86-second locking structure; 87-adsorption assembly; 88-inflating and deflation device; 89-inflatable bag;

[0033] 861-locking beam; 862-locking ring; 863-locking hole; 864-locking bead head; 865-rotating plug; 866-sliding column; 867-first spring;

[0034] 871-adsorption cylinder; 872-T-shaped slide rod; 873-piston; 874-sealing rubber ring; 875-hemispherical groove; 876-second spring; 877-limiting plate; 878-limiting slide groove. DETAILED DESCRIPTION

[0035] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0036] Example 1

[0037] A specific embodiment of the present invention discloses an automatic fuel supply system for multiple diesel generator vehicles, such as Figure 1As shown, it includes: an auxiliary fuel tank 1, a main fuel tank 2 and a connecting pipe 3 for connecting the main fuel tank 2 and the auxiliary fuel tank 1; the upper part of the main fuel tank 2 is connected to the engine fuel inlet pipe 4 and the engine fuel return pipe 5; the upper part of the auxiliary fuel tank 1 is provided with a first filling port 101 and a first ventilation pipe 102; the upper part of the main fuel tank 2 is provided with a second filling port 201 and a second ventilation pipe 202.

[0038] Specifically, the diesel generator set vehicle is to arrange the diesel generator set on the truck chassis, and the main fuel tank 2 and the auxiliary fuel tank 1 are arranged on both sides of the vehicle chassis to store and supply fuel. The two fuel tanks are connected through the connecting pipe 3 at the bottom, and the fuel flows from the auxiliary fuel tank 1 to the main fuel tank 2 through the connecting pipe 3, and then the fuel is provided to the engine through the engine oil inlet pipe 4 connected to the main fuel tank 2. The present invention expands the storage capacity of the fuel tank by setting two fuel tanks, thereby extending the fuel supply time, and extending the working time of heavy vehicles with large power consumption or functional vehicles equipped with large power consumption equipment.

[0039] Specifically, one end of the connecting pipe 3 is connected to the bottom of the auxiliary tank 1 , and the other end is connected to the bottom of the main tank 2 , so that a communicating vessel is formed among the auxiliary tank 1 , the main tank 2 and the connecting pipe 3 .

[0040] Furthermore, in the present invention, the auxiliary oil tank 1 and the connecting pipe 3 can be provided in one or more groups, thereby realizing double oil tank or multi-tank oil supply. The number of the auxiliary oil tank 1 and the connecting pipe 3 is not used as a limitation on the protection scope of the present invention.

[0041] In a specific embodiment of the present invention, a venturi tube 6 is provided inside the main oil tank 2. Further, the venturi tube 6 is simultaneously connected to the main oil tank 2, the connecting pipe 3 and the engine oil inlet pipe 4. The working principle of the venturi tube 6 is to change the liquid flow from coarse to fine to speed up the flow rate, so that the liquid forms a negative pressure on the rear side of the outlet of the venturi tube 6.

[0042] Specifically, Figure 1 As shown, the venturi tube 6 is vertically arranged at the bottom of the inner cavity of the main fuel tank 2, and there is a distance between the venturi tube 6 and the bottom of the main fuel tank 2, so as to facilitate the engine fuel inlet pipe 4 to absorb fuel.

[0043] like Figure 1 As shown, the venturi tube 6 includes a small-diameter section and a large-diameter section that are interconnected; the large-diameter section and the small-diameter section are both conical hole sections, and the connection between the large-diameter section and the small-diameter section is the throat, and the throat has the smallest pipe diameter. The small-diameter section is connected to the engine oil inlet pipe 4; the large-diameter section is connected to the inner cavity of the main oil tank 2.

[0044] Specifically, an L-shaped connecting branch pipe 7 is provided on the side of the venturi tube 6; the connecting branch pipe 7 is used to connect the venturi tube 6 and the connecting pipe 3. The connecting branch pipe 7 is connected to the throat of the venturi tube 6; the diameter of the connecting branch pipe 7 is smaller than the diameter of the connecting pipe 3, and the connecting branch pipe 7 extends into the interior of the connecting pipe 3 for a certain distance, such as Figure 1 shown.

[0045] In the present invention, a negative pressure zone is formed at the throat of the venturi tube 6, which produces a certain adsorption effect. Since the liquid has the fastest flow rate at the throat of the venturi tube 6, a negative pressure zone is formed at the throat of the venturi tube 6, and then when the engine oil inlet pipe 4 absorbs fuel through the venturi tube 6, the connecting branch pipe 7 can act as a negative pressure adsorption pipe to absorb fuel from the connecting pipe 3, thereby realizing the flow of fuel from the auxiliary tank 1 to the main tank 2.

[0046] In a specific embodiment of the present invention, a one-way valve is provided on the connecting pipe 3. The one-way valve is used to limit the flow direction of the fuel so that the fuel can only flow from the auxiliary tank 1 to the main tank 2. The present invention sets a one-way valve so that the fuel can only flow from the auxiliary tank 1 to the main tank 2, and the fuel in the main tank 2 cannot flow to the auxiliary tank 1, which can prevent the impurities generated by the return oil of the engine return pipe 5 in the main tank 2 from entering the auxiliary tank 1. When cleaning, only the main tank 2 needs to be cleaned, and the bottom of the auxiliary tank 1 can be flushed and cleaned during the process of the fuel in the auxiliary tank 1 flowing from the bottom to the main tank.

[0047] When in use, the main tank 2 and the auxiliary tank 1 are both filled to full liquid level, and the engine oil inlet pipe 4 and the engine oil return pipe 5 of the fuel supply system are installed in the main tank 2. The engine oil inlet pipe 4 draws fuel from the bottom of the main tank 2, and the large-diameter section of the venturi tube 6 serves as the oil suction port. When the second ventilation pipe 202 and the second filling port 201 are closed, the atmospheric pressure presses the fuel in the auxiliary tank 1 into the main tank 2, and the fuel in the auxiliary tank 1 is consumed preferentially; when the first ventilation pipe 102 and the second ventilation pipe 202 are both opened, the main tank 2 and the auxiliary tank 1 form a communicating vessel. When the engine is running, the connecting branch pipe 7 connected to the venturi tube 6 extends to a distance into the connecting pipe 3 as a negative pressure adsorption pipe. The connecting branch pipe 7 creates a suction force between the main tank 2 and the auxiliary tank 1 to adsorb the fuel from the auxiliary tank 1 to the main tank 2, and the fuel in the auxiliary tank 1 is sucked into the main tank 2, and the fuel levels in the two tanks are consistent.

[0048] In summary, the automatic fuel supply system of the present invention can realize the flow of fuel from the auxiliary tank 1 to the main tank 2 by controlling air pressure, a one-way valve, and using a venturi tube, thereby achieving the purpose of effective capacity expansion and ensuring long-term operation of the internal combustion engine.

[0049] Example 2

[0050] A specific embodiment of the present invention improves the automatic fuel supply system for multiple diesel generator vehicles of Example 1; an actuator 8 is installed on the auxiliary fuel tank 1, and the actuator 8 can fix the fuel gun 9 for filling fuel, thereby realizing automatic filling of the auxiliary fuel tank 1.

[0051] Specifically, Figure 2 As shown, the actuator 8 includes: a fixing component, a mechanism bracket 83, a limiting component and a control component; the fixing component, the limiting component and the control component are all arranged on the mechanism bracket 83; the fixing component is used to be fixedly connected to the main fuel tank 2 or the auxiliary fuel tank 1; the limiting component is used to limit and fix the refueling gun 9 on the mechanism bracket 83; the control component is used to control the opening and closing of the refueling gun 9.

[0052] In a specific embodiment of the present invention, the fixing assembly is two C-shaped fixing members 81 and a fastening bolt 82 disposed on a mechanism bracket 83 .

[0053] Specifically, Figure 2 , Figure 3 As shown, two C-shaped fixing members 81 are symmetrically arranged, and the two C-shaped fixing members 81 can cover the outside of the fuel tank filling port (the first filling port 101 or the second filling port 201), and the two C-shaped fixing members 81 are connected as a whole by a fastening bolt 82; tightening the fastening bolt 82 can connect and fix the C-shaped fixing member 81 to the fuel tank filling port. Preferably, the two C-shaped fixing members 81 are hingedly connected to the mechanism bracket 83, and the two C-shaped fixing members 81 can be adjusted to open or close by the relative rotation of the C-shaped fixing member 81 and the mechanism bracket 83.

[0054] Alternatively, the fixing component is a snap-fit ​​structure or a bonding structure; the fixing component can be used to achieve relative fixation of the actuator 8 and the auxiliary oil tank 1 / main oil tank 2.

[0055] In a specific embodiment of the present invention, Figure 2 , Figure 3 As shown, the limiting assembly includes a first locking structure 84 and a second locking structure 86; the first locking structure 84 and the second locking structure 86 can simultaneously clamp the front end and the rear end of the fuel gun 9; and when the fuel gun 9 is fixed on the actuator 8 by the first locking structure 84 and the second locking structure 86, the oil outlet of the fuel gun 9 extends into the first filling port 101 or the second filling port 201.

[0056] Furthermore, the first locking structure 84 and the second locking structure 86 have the same structural composition and locking principle. The second locking structure 86 is taken as an example to illustrate the structural composition and working principle of the locking structure of the present invention.

[0057] Furthermore, if Figure 2 , Figure 3As shown, in order to coordinate the relative positions of the refueling gun 9 and the mechanism bracket 83, a locking bracket 85 is provided on the mechanism bracket 83, and the second locking mechanism 86 is supported by providing the locking bracket 85; the relative positions of the second locking structure 86 and the mechanism bracket 83 are adjusted by providing the locking bracket 85, thereby adjusting the fixing position of the refueling gun 9 by the second locking mechanism 86.

[0058] Preferably, the locking bracket 85 is a retractable rod-shaped structure.

[0059] like Figure 5 , Figure 6 , Figure 7 As shown, the second locking mechanism 86 includes: a locking beam 861, a locking ring 862, a locking hole 863, a locking bead head 864 and a first spring 867. The locking beam 861 is arranged on the mechanism bracket 83, the locking ring 862 is an arc-shaped structural member, and the locking ring 862 is rotatably connected to the locking beam 861; the locking hole 863 is arranged at the end of the locking ring 862, and a locking groove is arranged on the locking beam 861, and a retractable locking bead head 864 and a first spring 867 are installed on the side of the locking groove. When the end of the locking ring 862 is inserted into the locking groove, the locking bead head 864 can automatically be inserted into the locking hole 863 under the elastic force of the first spring 867.

[0060] Specifically, the side of the locking groove is provided with a stepped hole for installing the lock bead head 864; the stepped hole includes a large hole and a small hole, the large hole is connected to the side of the locking groove, and the small hole is connected to the outer side of the lock buckle beam 861; the lock bead head 864 and the sliding column 866 are fixed as one body, the lock bead head 864 is slidably installed in the large hole, and the sliding column 866 is slidably installed in the small hole; the first spring 867 is arranged in the large hole and sleeved on the outside of the sliding column 866; the two ends of the first spring 867 are respectively in contact with the lock bead head 864 and the end surface of the large hole. When the first spring 867 is extended and retracted, the lock bead head 864 and the sliding column 866 can slide in the stepped hole, thereby realizing the engagement or unlocking of the lock buckle ring 862.

[0061] like Figure 6 As shown, when the locking ring 862 is inserted into the locking groove, the first spring 867 is compressed, the locking bead head 864 is pressed into the large hole, and the sliding column 866 slides along the small hole and protrudes from the outer side of the locking beam 861.

[0062] like Figure 7As shown, when the locking hole 863 of the locking buckle ring 862 is aligned with the locking bead head 864, the locking bead head 864 is inserted into the locking hole 863 under the elastic force of the first spring 867, and the sliding column 866 retracts into the small hole. The locking bead head 864 and the locking hole 863 are engaged, so that the locking buckle ring 862 can be fixed in the locking groove of the locking beam 861. At this time, the refueling gun 9 can be clamped between the locking buckle ring 862 and the locking beam 861, and the locking buckle ring 862 can fix the refueling gun 9.

[0063] Preferably, the locking bead head 864, the sliding column 866 and the first spring 867 are symmetrically arranged in two groups on both sides of the locking groove, such as Figure 6 , Figure 7 shown.

[0064] Preferably, if Figure 6 , Figure 7 As shown, the diameter of the locking ball head 864 is greater than the diameter of the sliding column 866; the locking ball head 864 is spherical or hemispherical.

[0065] Furthermore, a rotating plug 865 is rotatably installed on the lock beam 861, and the rotating plug 865 is a C-shaped structure. The inner side of the rotating plug 865 fits the outer side of the lock beam 861, and the rotating plug 865 can be rotated to block the small hole of the stepped hole; when the rotating plug 865 blocks the small hole, the sliding column 866 cannot protrude from the side of the lock beam 861, and then the locking bead head 864 cannot be moved out of the locking hole 863 of the lock snap ring 862; the rotating plug 865 limits the sliding column 866, and the lock snap ring 862 can be prevented from moving out of the locking groove, thereby ensuring that the lock structure is reliably fixed to the fuel gun 9.

[0066] In the present invention, the fueling gun 9 is fixed by a locking structure, and then the locking ring 862 is locked by a locking ball head 864, and then the locking ball head 864 is limited by a rotating blocking piece 865, thereby realizing multi-level limiting and ensuring the stability of the fixing of the fueling gun 9.

[0067] Furthermore, if Figure 4 , Figure 5 As shown, in order to achieve reliable fixation between the actuator 8 and the oil tank body. In a specific embodiment of the present invention, a plurality of adsorption components 87 are installed on the mechanism bracket 83. Figure 4 As shown, the adsorption assembly 87 includes: an adsorption cylinder 871, a T-shaped sliding rod 872, a piston 873, a sealing rubber ring 874, a second spring 876, a limiting plate 877 and a limiting sliding groove 878.

[0068] Specifically, Figure 3 , Figure 4As shown, a fixing ring is provided at the upper end of the adsorption cylinder 871, and a mounting hole is provided on the mechanism bracket 83; the fixing ring is installed in the mounting hole of the mechanism bracket 83 by means of snapping, bonding or welding.

[0069] Specifically, Figure 3 , Figure 4 As shown, the adsorption cylinder 871 is fixedly mounted on the mechanism bracket 83, and a sealing rubber ring 874 is fixedly arranged at the port of the adsorption cylinder 871; the T-shaped slide bar 872 passes through the circular hole inside the fixing ring of the adsorption cylinder 871 and is fixedly connected to the piston 873; the diameter of the piston 873 is larger than the diameter of the fixing ring and equal to the inner diameter of the adsorption cylinder 871. The edge of the piston 873 is in sealing contact with the inner wall of the adsorption cylinder 871; when the T-shaped slide bar 872 slides relative to the adsorption cylinder 871, it can drive the piston 873 to slide inside the adsorption cylinder 871; a second spring 876 is arranged between the piston 873 and the inner end surface of the adsorption cylinder 871, and the second spring 876 is sleeved on the outside of the T-shaped slide bar 872, and the elastic force of the second spring 876 can push the piston 873 to move in the direction of the sealing rubber ring 874.

[0070] Furthermore, a limiting slot 878 extending along the axis of the fixing ring is provided at the port of the fixing ring, and a limiting piece 877 is provided at the position corresponding to the fixing ring of the T-shaped sliding rod 872; when the limiting piece 877 is aligned with the limiting slot 878, the limiting piece 877 can be inserted into the limiting slot 878 under the elastic force of the second spring 876; specifically, the limiting slots are provided with two mutually perpendicular groups, one group is the first limiting slot, and the other group is the second limiting slot; the length of the first limiting slot is greater than the length of the second limiting slot. When the limiting piece 877 is engaged with the first limiting slot, the second spring 876 is in an initial state, and when the limiting piece 877 is engaged with the second limiting slot, the second spring 876 is in a compressed state.

[0071] During implementation, the sealing rubber ring 874 is in sealing contact with the side plate of the oil tank, and the T-shaped slide bar 872 is pulled to drive the piston 873 away from the sealing rubber ring 874, thereby forming a negative pressure in the sealed cavity formed by the piston 873, the adsorption cylinder 871, the sealing rubber ring 874 and the side plate of the oil tank, and the adsorption cylinder 871 and the sealing rubber ring 874 of the adsorption assembly are adsorbed on the side wall of the oil tank until the limiting plate 877 on the T-shaped slide bar 872 is pulled out from the first limiting slide groove, the T-shaped slide bar 872 is rotated to align the limiting plate 877 with the second limiting slide groove, and the T-shaped slide bar 872 is released to allow the limiting plate 877 to be stuck in the second limiting slide groove. At this time, the second spring 876 is in a compressed state, and there is a slight negative pressure state between the adsorption cylinder 871 and the side plate of the oil tank. The adsorption cylinder 871 is tightly adsorbed with the side plate of the oil tank, thereby achieving reliable fixation between the actuator 8 and the oil tank.

[0072] Furthermore, a sealing rubber ring 874 is fixedly provided at the port of the adsorption cylinder 871 ; the sealing rubber ring 874 is made of rubber or silicone and is used to directly contact the side of the auxiliary oil tank 1 or the main oil tank 2 .

[0073] Furthermore, in order to enhance the adsorption effect between the sealing rubber ring 874 and the surface of the oil tank, a plurality of hemispherical grooves 875 are provided on the end surface of the sealing rubber ring 874; Figure 4 When in use, the sealing rubber ring 874 is pressed and contacted with the surface of the oil tank, and each hemispherical groove 875 can be equivalent to a miniature adsorption cover. The sealing rubber ring 874 is pressed and contacted with the side plate of the oil tank, squeezing out the air in each hemispherical groove 875, so that each hemispherical groove 875 can be equivalent to a miniature negative pressure adsorption chamber, thereby enhancing the adsorption effect of the adsorption component 87, thereby ensuring the reliable installation of the actuator 8 and the oil tank.

[0074] In a specific embodiment of the present invention, the control component is an inflation and deflation device 88 and an inflatable bag 89. Specifically, the inflation and deflation device 88 is used to inflate and deflate the inflatable bag 89; the inflatable bag 89 expands after inflation, thereby being able to push the switch of the refueling gun 9 to open; the inflatable bag 89 contracts after deflation, and the switch of the refueling gun 9 is automatically closed.

[0075] Preferably, the inflatable bag 89 is cylindrical, such as Figure 3 The cylindrical inflatable bag 89 crosses the switch position of the fueling gun 9, and the fueling gun 9 is opened and closed by the expansion and contraction of the inflatable bag 89 instead of manual operation.

[0076] Specifically, the inflation and deflation device 88 is an electric inflation pump.

[0077] Alternatively, the control component is a drive device and a toggle rod; the drive device is a cylinder or a motor, which can drive the toggle rod to move; when the toggle rod moves, the switch of the fuel gun 9 can be toggled, thereby controlling the fuel gun 9 to start or stop filling fuel.

[0078] In this embodiment, when a fuel vehicle or equipment approaches a gas station or a fuel supply truck, an actuator 8 is installed on the first filling port 101 of the auxiliary fuel tank 1, and the fuel gun 9 is fixed to the auxiliary fuel tank 1 through the actuator 8, and the inflatable bag 89 is inflated and deflated through the inflation and deflation device 88, and the switch of the fuel gun 9 is squeezed by the inflatable bag 89 to control the fuel gun 9 to automatically fill the auxiliary fuel tank 1.

[0079] The automatic fuel supply system for multiple diesel generators in this embodiment is suitable for heavy-duty vehicles with high fuel consumption or fuel equipment that consumes fuel for a long time. When the heavy-duty vehicle requires a large amount of fuel, the actuator 8 can be used to clamp and control the fuel gun 9, thereby realizing automatic refueling; in addition, for equipment that consumes a lot of fuel and needs to maintain long-term operation, an actuator is set on the auxiliary fuel tank 1 to realize unattended fuel tank refueling, which saves labor and ensures the timeliness of refueling.

[0080] The present invention designs a locking structure on the mechanism bracket 83 to lock the positions of the refueling gun 9 and the oil pipeline to ensure that the refueling gun 9 will not fall. When in use, the refueling gun 9 is inserted into the first refueling port 101 or the second refueling port 201, and the refueling gun 9 is fixed to the mechanism bracket 83 through the first locking structure 84 and the second locking structure 86, and then the inflatable bag 89 is inflated or deflated through the inflation and deflation device 88 to control the opening or closing of the refueling gun 9.

[0081] The present invention pushes the refueling gun 9 to open through the deformed inflatable bag 89, which can effectively eliminate the dimensional tolerance between the airbag and the refueling gun 9 switch and adapt to refueling guns 9 of different specifications. The inflatable bag 89 is an elastic structure that can buffer the force and avoid damage to the refueling gun 9.

[0082] Example 3

[0083] A method for automatically supplying fuel, using the multiple diesel generator vehicle-mounted automatic fuel supply system described in Example 2 to supply fuel to the engine; specifically, the method for automatically supplying fuel includes the following steps:

[0084] Step S1: When the multiple diesel generator vehicle-mounted automatic fuel supply system of Example 1 is used, the first ventilation pipe 102 is opened, the second ventilation pipe 202 is closed, and the engine consumes the fuel in the auxiliary fuel tank 1 first; specifically, the first ventilation pipe 102 and the second ventilation pipe 202 are both threadedly screwed with sealing caps, and the first ventilation pipe 102 and the second ventilation pipe 202 are opened or closed by tightening or unscrewing the sealing caps.

[0085] The second filling port 201 and the second ventilation pipe 202 are closed to maintain good sealing of the main fuel tank 2. The first ventilation pipe 102 is opened to ensure the ventilation effect of the auxiliary fuel tank 1, so that the air can compensate for the fuel consumed by the auxiliary fuel tank 1. The atmospheric pressure and the one-way valve ensure that the fuel in the auxiliary fuel tank 1 is used first.

[0086] Specifically, when the engine consumes the fuel in the auxiliary tank 1, the fuel flows from the auxiliary tank 1 to the main tank 2 through the connecting pipe 3, and enters the engine through the engine oil inlet pipe 4; when the engine oil inlet pipe 4 absorbs oil, a negative pressure area is formed at the throat of the venturi tube 6, so that the connecting branch pipe 7 can act as a negative pressure adsorption pipe to adsorb fuel from the connecting pipe 3, thereby promoting the flow of fuel from the auxiliary tank 1 to the main tank 2.

[0087] Step S2: After the fuel in the auxiliary tank 1 is consumed, the second vent pipe 202 is opened. At this time, the main tank 2 is connected to the outside. The fuel in the main tank 2 will not flow to the auxiliary tank due to the one-way valve, and the engine consumes the fuel in the main tank 2.

[0088] Furthermore, a liquid level monitor is installed in the auxiliary fuel tank 1 to monitor the fuel liquid level in the auxiliary fuel tank 1 and determine whether to open the second ventilation pipe 202.

[0089] Step S3: Install the actuator 8 on the main fuel tank 2 or the auxiliary fuel tank 1, and fix the refueling gun 9 through the actuator 8, and refuel the main fuel tank 2 or the auxiliary fuel tank 1 through the refueling gun 9.

[0090] Preferably, an actuator 8 is installed on the auxiliary tank 1, and by filling the auxiliary tank 1, the fuel flows into the main tank 2 through the connecting pipe 3, so that the two tanks can be filled at the same time. When the generator set needs to be moved, the fuel gun 9 is removed to supply fuel through the fuel stored in the main tank 2 and the auxiliary tank 1.

[0091] Specifically, in step S3, the method for fixing and controlling the refueling gun 9 by the actuator 8 is:

[0092] Step S31: The actuator 8 is fixedly mounted on the main oil tank 2 or the auxiliary oil tank 1 .

[0093] Specifically, the actuator 8 is fixed in the following manner: two C-shaped fixing members 81 are wrapped around the outside of the first filling port 101 or the second filling port 201, and the two C-shaped fixing members 81 are connected as a whole by fastening bolts 82; and the fastening bolts 82 are tightened to clamp the C-shaped fixing members 81 and the first filling port 101 or the second filling port 201.

[0094] Furthermore, in order to maintain the fixing effect of the actuator 8 and the main oil tank 2 or the auxiliary oil tank 1; in the step S31, the sealing rubber ring 874 of the adsorption assembly 87 is sealed in contact with the oil tank side plate, and the T-shaped slide bar 872 is pulled to drive the piston 873 away from the sealing rubber ring 874, thereby forming a negative pressure in the sealed cavity formed by the piston 873, the adsorption cylinder 871, the sealing rubber ring 874 and the oil tank side plate; until the limit plate 877 on the T-shaped slide bar 872 is moved away from the Pull out the first limiting slide groove, rotate the T-shaped slide bar 872 to align the limiting plate 877 with the second limiting slide groove, loosen the T-shaped slide bar 872 to allow the limiting plate 877 to fit into the second limiting slide groove; at this time, the second spring 876 is in a compressed state, and there is a slight negative pressure between the adsorption cylinder 871 and the side plate of the oil tank. The adsorption cylinder 871 is adsorbed and fixed to the side plate of the oil tank, and the sealing rubber ring 874 is in compression contact with the surface of the oil tank, and the actuator 8 is fixed on the main oil tank 2 or the auxiliary oil tank 1.

[0095] Furthermore, when the sealing rubber ring 874 of the adsorption assembly 87 is in squeeze contact with the surface of the oil tank, each hemispherical groove 875 can be equivalent to a miniature adsorption cover, and the sealing rubber ring 874 is in squeeze contact with the side plate of the oil tank, squeezing out the air in each hemispherical groove 875, so that each hemispherical groove 875 can be relative to a miniature negative pressure adsorption chamber, thereby enhancing the adsorption effect of the adsorption assembly 87, and thereby ensuring the reliable installation of the actuator 8 and the oil tank.

[0096] Step S32 : Extend the refueling port of the refueling gun 9 into the first refueling port 101 or the second refueling port 202 ; and fix the refueling gun 9 to the mechanism bracket 83 of the actuator 8 through the first locking structure 84 and the second locking structure 86 .

[0097] Specifically, the first locking structure 84 and the second locking structure 86 lock the fuel gun 9 in the same manner.

[0098] Furthermore, the second locking structure 86 locks the fueling gun 9 in the following manner:

[0099] Step S321: Rotate the rotating block 865 to release its blockage on the sliding column 866; rotate the locking snap ring 862 to move the locking snap ring 862 out of the locking groove; when the locking snap ring 862 is moved out of the locking groove, the locking snap ring 862 squeezes the locking ball head 864 and the sliding column 866, causing the two to displace axially along the stepped hole, and the locking ball head 864 compresses the first spring 867 and moves out of the locking hole 863 at the same time.

[0100] Step S322: placing the refueling gun 9 between the locking buckle ring 862 and the locking crossbeam 861;

[0101] Step S323: Rotate the lock buckle ring 862 to re-engage it in the locking groove of the lock buckle beam 861; when the lock buckle ring 862 is engaged in the locking groove, the lock ball head 864 and the sliding column 866 are displaced along the axial direction of the stepped hole, the lock ball head 864 compresses the first spring 867, and the sliding column 866 protrudes from the outer side surface of the lock buckle beam 861; when the locking hole 863 of the lock buckle ring 862 is aligned with the lock ball head 864, the lock ball head 864 is engaged in the locking hole 863 under the elastic force of the first spring 867, and the sliding column 866 retracts at the same time;

[0102] Step S324: Rotate the rotating plug 865 to block the stepped hole, limit the displacement of the sliding column 866, and at the same time limit the locking ball head 864 from moving out of the locking hole 863, thereby keeping the locking ring 862 pressed and fixed on the fuel gun 9.

[0103] Step S33: Inflate or deflate the airbag 89 through the air-inflation device 88, thereby controlling the fueling gun 9 to open or close.

[0104] Specifically, when the vehicle is stationary, the fuel can be refueled by controlling the fuel refueling gun 9 of the mobile refueling vehicle through the actuator 8 to automatically replenish the fuel.

[0105] Specifically, the actuator 8 inflates the inflatable bag 89 through the inflating and deflation device 88, and the inflated inflatable bag 89 squeezes the switch of the refueling gun 9 to open, thereby controlling the refueling gun 9 to automatically refill the auxiliary fuel tank 1. Then, the refueling gun 9 is kept continuously outputting fuel through the limit plate of the refueling gun 9 itself.

[0106] When the fuel is full, the fueling gun 9 stops filling by its own gun jump design; the fuel can be automatically filled and automatically stopped, and unattended operation is achieved.

[0107] It is worth noting that: when the vehicle is being transferred, the dual fuel tanks of Example 1 are used for fuel supply, and when there is a gas station or a fuel supply vehicle near the vehicle, the multiple diesel generator vehicle-mounted automatic fuel supply system of Example 2 is used for automatic refueling.

[0108] Compared with the prior art, the technical solution provided by this embodiment has at least one of the following beneficial effects:

[0109] 1. When the automatic fuel supply system for multiple diesel generators on a vehicle of the present invention is used, for refueling a single diesel generator set during operation, it is only necessary to arrange the actuator 8 and the refueling gun 9 at the first refueling port 101 of the auxiliary fuel tank 1, so that continuous fuel supply can be achieved without human supervision.

[0110] 2. When the automatic fuel supply system for multiple diesel generators is used, the fuel in the auxiliary tank 1 is drawn into the main tank 2 through the connecting pipe 3 at the bottom, which can effectively expand the storage capacity of the tank and extend the service life of the fuel supply.

[0111] 3. When the automatic fuel supply system for multiple diesel generators is used, the fuel in the auxiliary tank 1 is drawn into the main tank 2 through the connecting pipe 3 at the bottom. The auxiliary tank itself has a self-cleaning function, and during tank maintenance, only the cleanliness of the main tank 2 needs to be paid attention to; the auxiliary tank can be self-cleaning.

[0112] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. An automatic fuel supply system for multiple diesel generators on a vehicle, characterized in that: include: An auxiliary oil tank (1), a main oil tank (2), and a connecting pipe (3) for connecting the main oil tank (2) and the auxiliary oil tank (1); the upper part of the main oil tank (2) is connected to an engine oil inlet pipe (4) and an engine oil return pipe (5); the upper part of the auxiliary oil tank (1) is provided with a first filling port (101) and a first ventilation pipe (102); the upper part of the main oil tank (2) is provided with a second filling port (201) and a second ventilation pipe (202).

2. The automatic fuel supply system for multiple diesel generators on a vehicle according to claim 1 is characterized in that: A venturi tube (6) is arranged inside the main oil tank (2).

3. The automatic fuel supply system for multiple diesel generators on a vehicle according to claim 2 is characterized in that: The venturi tube (6) is simultaneously connected to the main oil tank (2), the connecting pipe (3) and the engine oil inlet pipe (4).

4. The automatic fuel supply system for multiple diesel generators on a vehicle according to claim 3 is characterized in that: The venturi tube (6) is vertically arranged at the bottom of the inner cavity of the main oil tank (2) and is spaced apart from the bottom of the main oil tank (2).

5. The automatic fuel supply system for multiple diesel generators on a vehicle according to claim 4 is characterized in that: The venturi tube (6) comprises a small-diameter section and a large-diameter section which are connected to each other; the small-diameter section is connected to the engine oil inlet pipe (4); and the large-diameter section is connected to the inner cavity of the main oil tank (2).

6. The automatic fuel supply system for multiple diesel generators on a vehicle according to claim 5 is characterized in that: An L-shaped connecting branch pipe (7) is arranged on the side of the Venturi tube (6).

7. The automatic fuel supply system for multiple diesel generators on a vehicle according to claim 6 is characterized in that: The connecting branch pipe (7) is used to connect the Venturi tube (6) and the connecting pipe (3).

8. The automatic fuel supply system for multiple diesel generators on a vehicle according to any one of claims 1 to 7, characterized in that: The connecting pipe (3) is provided with a one-way valve.

9. The automatic fuel supply system for multiple diesel generators on a vehicle according to claim 8 is characterized in that: The one-way valve is used to limit the flow direction of the fuel so that the fuel can only flow from the auxiliary fuel tank (1) to the main fuel tank (2).

10. An automatic fuel supply method, using the multiple diesel generator vehicle-mounted automatic fuel supply system as described in any one of claims 1-9 to automatically supply fuel.

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