Communicating structure for internal pipeline and external pipeline of oil tank

Abstract

The utility model relates to the technical field of oil tanks, and provides an oil tank internal and external pipeline communication structure which comprises an inner shell, the inner shell is provided with an upper opening, and the end, provided with the upper opening, of the inner shell is used for being arranged on the inner wall of the oil tank; the end, provided with the lower opening, of the outer shell is used for being arranged on the outer wall of an oil tank. A through hole is formed in the top oil tank wall of the oil tank, the inner shell and the outer shell are located on the two sides of the through hole respectively, and the upper opening and the lower opening are communicated through the through hole. The inner shell is provided with an inner communicating hole, the interior of the inner shell is communicated with the interior of the oil tank through the inner communicating hole, the outer shell is provided with an outer communicating hole, and the interior of the outer shell is communicated with the outside through the outer communicating hole. By means of the technical scheme, the problem that in the prior art, oil tank pipelines are not firmly connected is solved.

Description

Technical Field

[0001] This utility model relates to the field of fuel tank technology, specifically to a structure for connecting internal and external pipelines of a fuel tank. Background Technology

[0002] Traditional fuel tank internal and external piping connections suffer from numerous problems. Their complex structure, numerous fittings, joints, and sealing components, and cumbersome connections during installation easily lead to issues like poor sealing and misalignment, making later maintenance and repair difficult. Connection stability is also poor, susceptible to equipment vibration, temperature changes, and media impact, often resulting in loosening or detachment. Inadequate ventilation structures lead to unsatisfactory pressure balance and ventilation, easily causing fuel tank expansion or collapse and unstable fuel supply. Furthermore, high production costs and limited design flexibility are also present. However, with the development of various industries, higher demands are placed on fuel tank piping connections. They need to be simpler, more reliable, adaptable to complex operating conditions, and cost-effective, while also increasing design flexibility to meet different application scenarios and relevant standards. Against this backdrop, the development of new fuel tank internal and external piping connections is essential. Utility Model Content

[0003] This utility model proposes a structure for connecting the internal and external pipelines of an oil tank, which solves the problem of unstable oil tank pipeline connections in the prior art.

[0004] The technical solution of this utility model is as follows: a structure for connecting the internal and external pipelines of an oil tank, comprising:

[0005] The inner shell has an upper opening, and one end of the inner shell with the upper opening is used to be disposed on the inner wall of the oil tank;

[0006] The outer casing has a lower opening, and one end of the outer casing with the lower opening is used to be disposed on the outer wall of the fuel tank;

[0007] The top wall of the fuel tank has a through hole, the inner shell and the outer shell are located on both sides of the through hole, and the upper opening and the lower opening are connected through the through hole;

[0008] The inner shell has an internal connecting hole, through which the interior of the inner shell communicates with the interior of the oil tank. The outer shell has an external connecting hole, through which the interior of the outer shell communicates with the outside.

[0009] As a further technical solution, it also includes:

[0010] An inner connecting pipe has an inner connecting end and an inner free end. The inner connecting end communicates with the inner connecting hole, and the inner free end is used to connect with an external pipe.

[0011] The external connecting pipe has an external connecting end and an external free end. The external connecting end is connected to the external connecting hole, and the external free end is used to connect to the internal pipeline.

[0012] As a further technical solution

[0013] The inner shell has a welding fusion surface at one end with an upper opening, and a plurality of welding grooves are formed on the welding fusion surface, which are evenly distributed around the upper opening;

[0014] The inner shell is welded to the inner wall of the oil tank.

[0015] As a further technical solution

[0016] The outer wall of the external connecting tube has an annular locking block, the annular locking block has an annular guide surface and an annular locking surface, the annular guide surface is close to the outer free end, and the annular guide surface and the annular locking surface are smoothly connected.

[0017] As a further technical solution, it also includes:

[0018] The connecting plate has one end connected to the outer wall of the outer connecting tube, and the other end is a free end close to the outer free end. There is a gap between the connecting plate and the outer connecting tube.

[0019] As a further technical solution

[0020] The free end of the connecting plate has a locking block, which is located on the side away from the external connecting tube.

[0021] As a further technical solution

[0022] The free end of the connecting plate has a limiting ring for passing through a fastening rope.

[0023] As a further technical solution

[0024] The connecting plate is at least two, and the at least two connecting plates are evenly distributed along the circumference of the outer connecting tube.

[0025] As a further technical solution

[0026] The connecting plate has an anti-slip pad on one side of its free end, and the anti-slip pad is located on the side close to the outer connecting tube.

[0027] As a further technical solution

[0028] The anti-slip mat is an elastic rubber mat.

[0029] The working principle and beneficial effects of this utility model are as follows:

[0030] In this invention, an inner shell and an outer shell are constructed, with the two connected to each other via through holes on the top wall of the fuel tank. The inner shell connects to the inside of the fuel tank via an internal connecting hole, and the outer shell connects to the outside via an external connecting hole, thus establishing a basic framework for connecting the internal and external pipelines of the fuel tank. This structural design allows the pipelines inside and outside the fuel tank to achieve functions such as fuel or other medium transportation and ventilation while remaining relatively independent yet connected through specific channels. Furthermore, the through holes on the fuel tank wall cleverly connect the internal and external parts, providing a reasonable layout for subsequent connections of various pipes. Attached Figure Description

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0032] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0033] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0034] Figure 3 This utility model Figure 2 A magnified schematic diagram of part A in the middle;

[0035] Figure 4 This is a schematic diagram of the cross-sectional structure of the inner shell and outer shell of this utility model;

[0036] Figure 5 This is a schematic diagram of the inner shell and outer shell of this utility model in use. Figure 1 ;

[0037] Figure 6 This is a schematic diagram of the inner shell and outer shell of this utility model in use. Figure 2 .

[0038] In the diagram: 1-Inner shell, 11-Upper opening, 12-Inner connecting hole, 13-Welding fusion surface, 14-Welding groove, 2-Oil tank, 21-Through hole, 3-Outer shell, 31-Lower opening, 32-Outer connecting hole, 4-Inner connecting pipe, 41-Inner connecting end, 42-Inner free end, 5-Outer connecting pipe, 51-Outer connecting end, 52-Outer free end, 53-Annular locking block, 54-Annular guide surface, 55-Annular locking surface, 61-Connecting plate, 62-Locking block, 63-Limiting ring, 64-Anti-slip pad. Detailed Implementation

[0039] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0040] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0041] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0043] like Figures 1-6 As shown, this utility model proposes a structure for connecting the internal and external pipelines of an oil tank, including an inner shell 1 with an upper opening 11, one end of which is used to be installed on the inner wall of an oil tank 2; an outer shell 3 with a lower opening 31, one end of which is used to be installed on the outer wall of an oil tank 2; a through hole 21 is provided on the top wall of the oil tank 2, with the inner shell 1 and the outer shell 3 located on opposite sides of the through hole 21, and the upper opening 11 and the lower opening 31 connected through the through hole 21; the inner shell 1 has an internal connecting hole 12, through which the interior of the inner shell 1 is connected to the interior of the oil tank 2; the outer shell 3 has an external connecting hole 32, through which the interior of the outer shell 3 is connected to the exterior.

[0044] In this embodiment, an inner shell 1 and an outer shell 3 are provided, and the two are located on opposite sides and interconnected by a through hole 21 on the top wall of the fuel tank 2. Simultaneously, the inner shell 1 is connected to the interior of the fuel tank 2 through an inner connecting hole 12, and the outer shell 3 is connected to the outside through an outer connecting hole 32, thus establishing the basic framework for connecting the internal and external pipelines of the fuel tank 2. This structural design allows the pipelines inside and outside the fuel tank 2 to achieve functions such as fuel or other medium transportation and ventilation while remaining relatively independent yet connected through specific channels. Furthermore, the through hole on the fuel tank wall cleverly connects the internal and external parts, providing a reasonable layout for subsequent connections of various pipes and other operations.

[0045] Furthermore, it also includes an inner connecting pipe body 4, which has an inner connecting end 41 and an inner free end 42. The inner connecting end 41 is connected to the inner connecting hole 12, and the inner free end 42 is used to connect to the external pipeline. The outer connecting pipe body 5 has an outer connecting end 51 and an outer free end 52. The outer connecting end 51 is connected to the outer connecting hole 32, and the outer free end 52 is used to connect to the built-in pipeline.

[0046] In this embodiment, an inner connecting pipe 4 and an outer connecting pipe 5 are added, clarifying their connection relationships with the connecting holes on the inner and outer shells, as well as their respective uses in connecting with external and internal pipelines. This allows the internal and external pipelines of the fuel tank 2 to connect to the connecting structure more systematically and conveniently, serving as a transition and extension mechanism. This facilitates the laying and integration of the entire fuel system's pipelines, ensures smooth flow of the medium inside and outside the fuel tank, and improves the functionality of the entire connecting structure.

[0047] Furthermore, the inner shell 1 has a welding fusion surface 13 at one end with an upper opening 11, and a plurality of welding grooves 14 are provided on the welding fusion surface 13, which are evenly distributed around the upper opening 11; the inner shell 1 is welded to the inner wall of the oil tank 2.

[0048] In this embodiment, refer to Figure 2 As shown, a welding fusion surface 13 is provided at one end of the inner shell 1 with an upper opening 11, and several welding grooves 14 are evenly distributed on it. The inner shell 1 is fixed to the inner wall of the oil tank 2 by welding. The design of the welding fusion surface 13 and the welding grooves 14 helps to increase the welding contact area, improve the strength of the weld, ensure the stability of the connection between the inner shell 1 and the inner wall of the oil tank 2, and prevent loosening or falling off due to vibration, pressure and other factors during use. This ensures the reliable operation of the basic part of the entire communication structure and lays a solid foundation for subsequent communication and transmission functions.

[0049] Furthermore, the outer wall of the outer connecting tube 5 has an annular locking block 53, and the annular locking block 53 has an annular guide surface 54 and an annular locking surface 55. The annular guide surface 54 is close to the outer free end 52, and the annular guide surface 54 and the annular locking surface 55 are smoothly connected.

[0050] In this embodiment, an annular locking block 53 is provided on the outer wall of the external connecting pipe 5. This block has an annular guide surface 54 and an annular locking surface 55, which are smoothly connected. The annular guide surface 54 facilitates guidance and alignment with other components (pipes) during installation, making the connection process smoother. The annular locking surface 55, after installation, acts to lock and fix the components, preventing accidental detachment and enhancing the reliability and stability of the external connecting pipe 5 when connected to other related components. This ensures the stability of the pipeline connection and facilitates the long-term stable operation of the entire connection structure.

[0051] Furthermore, it also includes a connecting plate 61, one end of which is connected to the outer wall of the outer connecting pipe 5, and the other end is a free end and close to the outer free end 52. There is a gap between the connecting plate 61 and the outer connecting pipe 5.

[0052] In this embodiment, a connecting plate 61 is added, with one end connected to the outer wall of the outer connecting tube 5 and the other end being a free end close to the outer free end 52, with a gap between it and the outer connecting tube 5. The presence of the connecting plate 61 can, to a certain extent, further fix the outer connecting tube, prevent it from falling off, and improve stability.

[0053] Furthermore, the free end of the connecting plate 61 has a locking block 62, which is located on the side away from the outer connecting tube body 5.

[0054] In this embodiment, a locking block 62 is provided at the free end of the connecting plate, located on the side away from the external connecting pipe 5. This locking block 62 can cooperate with corresponding external slots, buckles, and other structures to achieve a more secure connection between the external connecting pipe and other components, further preventing displacement or shaking during use. Especially when facing complex working environments and external forces, it can better maintain the integrity of the entire connecting structure and the reliability of the connection.

[0055] Furthermore, the free end of the connecting plate 61 has a limiting ring 63, which is used to pass through the fastening rope.

[0056] In this embodiment, refer to Figure 2 and Figure 3As shown, a limiting ring 63 is set at the free end of the connecting plate 61 for passing through a fastening rope (cable tie, etc.). This allows the fastening rope to be connected to external fixing points, etc., to pull and fix the entire external connecting pipe 5 and the parts connected to it. This helps to enhance the stability of the entire connecting structure in some special installation scenarios or when additional reinforcement is required, and also makes it easy to flexibly adjust the fixing method and force according to actual installation needs.

[0057] Furthermore, there are at least two connecting plates 61, and the at least two connecting plates 61 are evenly distributed along the circumference of the outer connecting pipe body 5.

[0058] In this embodiment, at least two connecting plates 61 are specified and evenly distributed along the circumference of the outer connecting pipe 5, so that the supporting, reinforcing and connecting functions of the outer connecting pipe can be evenly distributed in its circumferential direction, avoiding uneven local stress, and comprehensively improving the stability of the connection between the outer connecting pipe and other components and the reliability of the entire connection structure.

[0059] Furthermore, one side of the free end of the connecting plate 61 has an anti-slip pad 64, which is located on the side close to the outer connecting tube 5.

[0060] In this embodiment, an anti-slip pad 64 is provided on one side of the free end of the connecting plate 61, and is located on the side close to the external connecting pipe 5. The anti-slip pad 64 can increase the friction between the connecting plate 61 and the components in contact with it. When connecting, fixing or subjected to external forces during use, it can better prevent relative sliding between components (i.e., prevent the external pipe on the external connecting pipe 5 from falling off), further enhancing the stability of the connection and ensuring that the entire connection structure can maintain a good connection state under different working conditions, ensuring that the pipe connection function is not affected.

[0061] Furthermore, the anti-slip mat 64 is an elastic rubber mat.

[0062] In this embodiment, the anti-slip pad 64 is defined as an elastic rubber pad. The elastic rubber pad has good elasticity and flexibility. It can deform to a certain extent when under pressure to better fit the contact surface and further increase the friction. It can also have good durability during long-term use and is not easily damaged. Thus, it can play an anti-slip role for a long time and maintain the stability of the connection of related components in the entire connected structure, and ensure the reliable operation of the connection between the pipelines inside and outside the oil tank.

[0063] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A structure for connecting internal and external pipelines of a fuel tank, characterized in that, include: The inner shell (1) has an upper opening (11), and one end of the inner shell (1) with the upper opening (11) is used to be disposed on the inner wall of the oil tank (2); The outer casing (3) has a lower opening (31), and one end of the outer casing (3) with the lower opening (31) is used to be disposed on the outer wall of the oil tank (2); The top wall of the oil tank (2) has a through hole (21), the inner shell (1) and the outer shell (3) are located on both sides of the through hole (21), and the upper opening (11) and the lower opening (31) are connected through the through hole (21). The inner shell (1) has an internal connecting hole (12), and the interior of the inner shell (1) is connected to the interior of the oil tank (2) through the internal connecting hole (12). The outer shell (3) has an external connecting hole (32), and the interior of the outer shell (3) is connected to the outside through the external connecting hole (32).

2. The structure for connecting internal and external pipelines of a fuel tank according to claim 1, characterized in that, Also includes: The inner connecting pipe (4) has an inner connecting end (41) and an inner free end (42). The inner connecting end (41) is connected to the inner connecting hole (12), and the inner free end (42) is used to connect to the external pipeline. The external connecting pipe (5) has an external connecting end (51) and an external free end (52). The external connecting end (51) is connected to the external connecting hole (32), and the external free end (52) is used to connect to the built-in pipeline.

3. The internal and external pipeline connection structure of the fuel tank according to claim 2, characterized in that, The inner shell (1) has a welding fusion surface (13) at one end of the upper opening (11), and a plurality of welding grooves (14) are provided on the welding fusion surface (13), and the plurality of welding grooves (14) are evenly distributed around the upper opening (11); The inner shell (1) is welded to the inner wall of the oil tank (2).

4. The internal and external pipeline connection structure of the fuel tank according to claim 3, characterized in that, The outer wall of the external connecting tube (5) has an annular locking block (53), the annular locking block (53) has an annular guide surface (54) and an annular locking surface (55), the annular guide surface (54) is close to the outer free end (52), and the annular guide surface (54) and the annular locking surface (55) are smoothly connected.

5. The structure for connecting internal and external pipelines of an oil tank according to claim 4, characterized in that, Also includes: The connecting plate (61) is connected at one end to the outer wall of the outer connecting tube (5) and at the other end is a free end and close to the outer free end (52). There is a gap between the connecting plate (61) and the outer connecting tube (5).

6. The internal and external pipeline connection structure of the fuel tank according to claim 5, characterized in that, The free end of the connecting plate (61) has a locking block (62), which is located on the side away from the external connecting tube (5).

7. The internal and external pipeline connection structure of an oil tank according to claim 5, characterized in that, The free end of the connecting plate (61) has a limiting ring (63) for passing through the fastening rope.

8. A fuel tank internal and external pipeline connection structure according to claim 6 or 7, characterized in that, There are at least two connecting plates (61), and at least two connecting plates (61) are evenly distributed along the circumference of the outer connecting tube (5).

9. The internal and external pipeline connection structure of a fuel tank according to claim 5, characterized in that, The connecting plate (61) has an anti-slip pad (64) on one side of its free end, and the anti-slip pad (64) is located on the side close to the outer connecting tube (5).

10. The structure for connecting internal and external pipelines of an oil tank according to claim 9, characterized in that, The anti-slip pad (64) is an elastic rubber pad.

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