Oil tank structure

Abstract

According to the scheme, the oil tank structure comprises an oil tank body, and the upper portion of the oil tank body is provided with an inlet and outlet hole; the sealing ring is mounted at the inlet and outlet hole and used for sealing the inlet and outlet hole, and through holes allowing the oil pumping pipe and the oil return pipe to penetrate through are formed in the sealing ring; the fixing plate is mounted at the inlet and outlet opening and used for fixing the sealing ring, and through holes for the oil pumping pipe and the oil return pipe to penetrate through are also formed in the fixing plate; the filter is used for being placed in the oil tank body and arranged at the tail end of the oil pumping pipe. The performance of the oil tank is improved, the service life of the oil tank is prolonged, and meanwhile the use experience and maintenance convenience of a user are considered.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a fuel tank structure. Background Art

[0002] In the existing oil tank design, the traditional practice is to place the oil outlet at the bottom of the tank. This design is based on the principle of gravity and is intended to promote the smooth outflow of oil. However, this design has exposed some key problems in practical applications, especially in the management of the oil outlet pipe and the oil return pipe.

[0003] Although the oil outlet pipe and the oil return pipe are independent, they share the same oil outlet. This design seems to simplify the structure of the oil tank, but it actually hides potential risks. When the oil return pipe completes the oil return process, if it fails to accurately guide all the oil into the oil tank, the oil is not fully recovered, which will not only lead to oil waste, but more importantly, the unrecovered oil may leak into the external environment, causing a series of safety hazards.

[0004] For example, in a high temperature environment, leaked oil may ignite and cause a fire; while the vehicle is driving, oil leakage may affect the stability and safety of the vehicle and increase the probability of accidents. In addition, long-term oil leakage will also pollute the environment, which does not meet the current social requirements for environmental protection and sustainable development.

[0005] Therefore, how to solve the potential safety hazard caused by the shared oil outlet of the oil outlet pipe and the oil return pipe while maintaining the original function of the oil tank has become a key issue that needs to be solved urgently. This utility model proposes an innovative solution to the problem of oil inlet and outlet safety and sealing of the oil tank, aiming to improve the safety and reliability of the oil tank while taking into account environmental protection needs, bringing users a safer and more efficient use experience. Utility Model Content

[0006] The purpose of this application is to provide a fuel tank structure in view of the above-mentioned problems existing in the prior art.

[0007] In order to achieve the above application purpose, the present application adopts the following technical solution: a fuel tank structure includes:

[0008] The fuel tank body has inlet and outlet openings at the top;

[0009] A sealing ring is installed at the inlet and outlet openings to seal the inlet and outlet openings, and the sealing ring is provided with through holes for the oil extraction pipe and the oil return pipe to pass through respectively;

[0010] A fixing plate is installed at the inlet and outlet openings to fix the sealing ring, and the fixing plate is also provided with through holes for the oil extraction pipe and the oil return pipe to pass through;

[0011] The filter is used to be placed in the oil tank body and is arranged at the end of the oil extraction pipe.

[0012] Furthermore, the sealing ring comprises an upper retaining ring, a lower retaining ring and a connecting section arranged between the two retaining rings, and the maximum outer diameters of the upper retaining ring and the lower retaining ring are both larger than the connecting section.

[0013] Furthermore, the outer diameter of the connecting section is equal to the inner diameter of the inlet and outlet opening.

[0014] Furthermore, the length of the connecting section is equal to the wall thickness of the fuel tank body.

[0015] Furthermore, the cross section of the lower retaining ring is trapezoidal, the top is the largest outer diameter, the bottom is the smallest outer diameter, and the outer diameter of the bottom is smaller than the inner diameter of the inlet and outlet opening.

[0016] Furthermore, mounting holes or connecting columns are provided around the inlet and outlet openings, and corresponding openings are provided on the fixing plate, so that the fixing plate can be fixed to the outside of the inlet and outlet openings through connecting pieces.

[0017] Furthermore, the top of the oil tank body is raised, and the inlet and outlet openings are located on the inclined surface of the side of the top rise.

[0018] Furthermore, a refueling hole is provided on the top of the fuel tank body.

[0019] Furthermore, a mounting plane is provided on the oil tank body, and the inlet and outlet openings are located on the mounting plane.

[0020] Furthermore, the material of the sealing ring is one of nitrile rubber, fluororubber, and hydrogenated nitrile rubber.

[0021] Compared with the prior art, this application has the following beneficial effects:

[0022] 1. Improve safety: By independently setting the oil extraction pipe and the oil return pipe and passing them through the through holes on the sealing ring and the fixing plate, and fixing them on the upper part of the oil tank through the fixing plate, the sealing of the oil tank is enhanced, which is more conducive to the return of oil from the oil return pipe, avoiding the oil leakage problem that may be caused by the traditional oil outlet, significantly reducing the fire risk and other safety hazards caused by oil leakage, and enhancing the overall safety of the oil tank.

[0023] 2. Improve maintenance convenience: The setting of the fixing plate not only strengthens the stability of the sealing ring and further enhances the sealing of the fuel tank, but also simplifies the maintenance process of the fuel tank. It can be easily disassembled and assembled through the connector, which is convenient for regular inspection and replacement of the sealing ring, ensuring that the fuel tank is in good condition for a long time, reducing maintenance costs and time. Most importantly, when the fuel tank is under pressure, it can effectively prevent the gap between the sealing ring and the fuel tank, thereby preventing oil leakage.

[0024] 3. Optimize oil management: A filter is installed at the end of the oil extraction pipe to effectively filter impurities in the oil, protect the engine system, and extend the service life of the equipment. At the same time, the independent oil extraction and oil return paths reduce the pollution in the oil circulation and improve the overall efficiency and cleanliness of the oil tank system.

[0025] 4. Structural optimization and environmental protection: The raised design on the top of the tank body and the reasonable installation plane layout not only improve the appearance of the tank, but also optimize the flow path of the oil, reduce oil residue and waste. At the same time, the sealing ring made of environmentally friendly materials (such as nitrile rubber, fluororubber, etc.) meets the current social requirements for environmental protection and embodies the green design concept.

[0026] 5. Enhanced reliability and durability: By accurately matching the outer diameter of the sealing ring connection section with the inner diameter of the inlet and outlet openings of the fuel tank body, and controlling the length of the connection section to be equal to the tank wall thickness, a close fit between the sealing ring and the fuel tank body is ensured, reducing looseness or wear caused by long-term use, and enhancing the reliability and durability of the fuel tank structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the fuel tank body of the present application;

[0028] Figure 2 It is a schematic diagram of the fixed plate structure of the present application;

[0029] Figure 3 It is a schematic diagram of the structure of the sealing ring;

[0030] Figure 4 yes Figure 3 Another perspective of the picture.

[0031] In the figure, 1. oil tank body; 2. sealing ring; 3. oil extraction pipe; 4. oil return pipe; 5. fixing plate; 6. filter; 11. inlet and outlet openings; 12. mounting hole; 13. mounting plane; 21. upper retaining ring; 22. lower retaining ring; 23. connecting section. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0033] Those skilled in the art should understand that, in the disclosure of the present application, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present application.

[0034] Embodiment 1:

[0035] A fuel tank structure, such as Figure 1-4 As shown, it includes a fuel tank body 1, a sealing ring 2, a fixing plate 5 and a filter 6. An inlet and outlet opening 11 is provided on the upper part of the fuel tank body 1. The opening is located on the inclined surface of the raised side of the top of the fuel tank body 1, which is convenient for the inflow and outflow of oil. A refueling hole is also provided on the top of the fuel tank to facilitate refueling. A mounting plane 13 is provided on the fuel tank body 1, and the inlet and outlet opening 11 is located on the plane, which optimizes the layout of the fuel tank and facilitates installation and maintenance.

[0036] The sealing ring 2 is composed of an upper retaining ring 21, a lower retaining ring 22 and a connecting section 23, and its material is preferably nitrile rubber, which has good oil resistance and sealing performance. The maximum outer diameters of the upper retaining ring 21 and the lower retaining ring 22 are both larger than the connecting section 23 to ensure close contact between the sealing ring 2 and the fuel tank body 1. The outer diameter of the connecting section 23 is equal to the inner diameter of the inlet and outlet opening 11, and the length is equal to the wall thickness of the fuel tank body 1, to ensure that the sealing ring 2 is firmly installed in the fuel tank. The cross section of the lower retaining ring 22 is trapezoidal, with the maximum outer diameter at the top and the minimum outer diameter at the bottom, and the outer diameter of the bottom is smaller than the inner diameter of the inlet and outlet opening 11, forming a natural sealing effect.

[0037] The fixing plate 5 is installed at the inlet and outlet opening 11, and is provided with through holes for the oil extraction pipe 3 and the oil return pipe 4 to pass through respectively, which correspond to the through holes on the sealing ring 2. The fixing plate 5 is fixed to the mounting hole 12 or the connecting column on the oil tank body 1 by connecting members (such as screws or bolts), so as to ensure the firmness of the sealing ring 2, prevent the generation of gaps when the oil tank is under pressure, and ensure the sealing performance of the oil tank.

[0038] In the actual operation of this embodiment, after the oil pipes (the oil extraction pipe 3 and the oil return pipe 4) and the rubber fixing parts (the sealing ring 2) of the oil pipes are installed on the oil tank body 1, two fixing points are welded on both sides of the opening of the oil tank body 1, and then an iron sheet (fixing plate 5) is added to fasten it. Advantages of this are:

[0039] 1. When tightening the iron sheet, the rubber parts will be squeezed to a certain extent, which will strengthen the tightness between the rubber parts and the fuel tank and meet the latest international fuel tank anti-leakage standards (no leakage for 15s under a pressure of 34.5Kpa);

[0040] 2. After tightening the iron sheet, the tightness and friction between the inner wall of the oil pipe installation hole (inlet and outlet opening 11) on the rubber part and the outer wall of the oil pipe will be enhanced, so that the oil pipe assembly can meet the latest international oil tank leakage prevention standards (no leakage for 15 seconds under a pressure of 34.5Kpa) and the fuel line tensile test requirements (apply a load of 133N for 5 seconds without slipping of the oil pipe.

[0041] The filter 6 is arranged at the end of the oil extraction pipe and placed in the oil tank body 1, which can effectively filter impurities in the oil, protect the engine system, and extend the service life of the equipment. The oil extraction pipe and the oil return pipe 4 are independently arranged, respectively passing through the through holes on the sealing ring 2 and the fixing plate 5, avoiding cross contamination of the oil and improving the cleanliness and efficiency of the oil tank system.

[0042] Embodiment 2:

[0043] On the basis of Example 1, this example further optimizes the environmental performance of the fuel tank structure. The material of the sealing ring 2 can be hydrogenated nitrile rubber or fluororubber, which not only has excellent oil resistance and high temperature resistance, but is also more environmentally friendly and meets the current social requirements for environmental protection. In addition, the design of the fuel tank body 1 pays more attention to energy conservation and emission reduction, and embodies the green design concept by optimizing the oil flow path, reducing oil residue, and reducing energy waste.

[0044] Embodiment 3:

[0045] On the basis of Examples 1 and 2, this Example emphasizes the reliability and durability of the fuel tank structure. By accurately matching the outer diameter of the connecting section 23 of the sealing ring 2 with the inner diameter of the inlet and outlet opening 11 of the fuel tank body 1, and controlling the length of the connecting section 23 to be equal to the fuel tank wall thickness, the tight fit between the sealing ring 2 and the fuel tank body 1 is ensured, reducing looseness or wear caused by long-term use, and enhancing the reliability and durability of the fuel tank structure. At the same time, the setting of the fixing plate 5 not only enhances the stability of the sealing ring 2, but also simplifies the maintenance process of the fuel tank. It can be easily disassembled and assembled through the connecting piece, which is convenient for regular inspection and replacement of the sealing ring 2, ensuring that the fuel tank is in good condition for a long time, and reducing maintenance costs and time.

[0046] In summary, the oil tank structure provided by the utility model optimizes oil management by independently setting up the oil extraction pipe and the oil return pipe 4, improves the safety, maintenance convenience, environmental protection performance, reliability and durability of the oil tank, and provides users with a safer, more efficient and environmentally friendly use experience.

[0047] The parts not described in detail in this application are prior art, so this application does not describe them in detail.

[0048] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0049] Although the present invention uses more terms such as oil tank body 1, sealing ring 2, oil extraction pipe 3, oil return pipe 4, fixing plate 5, filter 6, inlet and outlet opening 11, mounting hole 12, mounting plane 13, upper retaining ring 21, lower retaining ring 22, connecting section 23, etc., it does not exclude the possibility of using other terms. The use of these terms is only for more convenient description and explanation of the essence of the present application; interpreting them as any additional restrictions is contrary to the spirit of the present application.

[0050] The present application is not limited to the above-mentioned optimal implementation mode. Anyone can derive other forms of products under the inspiration of this application. However, no matter what changes are made in the shape or structure, all technical solutions that are the same or similar to those of the present application fall within the protection scope of the present application.

Claims

1. A fuel tank structure, characterized in that: include: The fuel tank body has inlet and outlet openings at the top; A sealing ring is installed at the inlet and outlet openings to seal the inlet and outlet openings, and the sealing ring is provided with through holes for the oil extraction pipe and the oil return pipe to pass through respectively; A fixing plate is installed at the inlet and outlet openings to fix the sealing ring, and the fixing plate is also provided with through holes for the oil extraction pipe and the oil return pipe to pass through; The filter is used to be placed in the oil tank body and is arranged at the end of the oil extraction pipe.

2. The fuel tank structure according to claim 1, characterized in that: The sealing ring comprises an upper retaining ring, a lower retaining ring and a connecting section arranged between the two retaining rings, and the maximum outer diameters of the upper retaining ring and the lower retaining ring are both larger than the connecting section.

3. The fuel tank structure according to claim 2, characterized in that: The outer diameter of the connecting section is equal to the inner diameter of the inlet and outlet opening.

4. The fuel tank structure according to claim 2, characterized in that: The length of the connecting section is equal to the wall thickness of the oil tank body.

5. The fuel tank structure according to claim 2, characterized in that: The cross section of the lower retaining ring is trapezoidal, the top is the largest outer diameter, the bottom is the smallest outer diameter, and the outer diameter of the bottom is smaller than the inner diameter of the inlet and outlet opening.

6. The fuel tank structure according to claim 1, characterized in that: Mounting holes or connecting columns are arranged around the inlet and outlet openings, and corresponding openings are arranged on the fixing plate, so that the fixing plate can be fixed to the outside of the inlet and outlet openings through connecting pieces.

7. The fuel tank structure according to claim 1, characterized in that: The top of the oil tank body is raised, and the inlet and outlet openings are located on the inclined surface of the side surface of the top raised.

8. The fuel tank structure according to any one of claims 1 to 7, characterized in that: A refueling hole is arranged on the top of the oil tank body.

9. The fuel tank structure according to any one of claims 1 to 7, characterized in that: The oil tank body is provided with a mounting plane, and the inlet and outlet openings are located on the mounting plane.

10. The fuel tank structure according to any one of claims 1 to 7, characterized in that: The material of the sealing ring is one of nitrile rubber, fluororubber and hydrogenated nitrile rubber.

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