Built-in reinforcing column of plastic high-pressure fuel tank

Abstract

The utility model relates to the technical field of fuel tanks, and provides a built-in reinforcing column of a plastic high-pressure fuel tank, which comprises a supporting piece, the supporting piece is provided with a connecting part, the connecting part is provided with a connecting hole and a reinforcing end, and a fixing piece is arranged on the connecting part, wraps the reinforcing end and penetrates through the connecting hole. By means of the technical scheme, the problems that in the prior art, an oil tank reinforcing column is large in coating machining difficulty, high in cost and poor in connecting performance are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel tanks, and particularly to an internal reinforcing column of a plastic high-pressure fuel tank. Background Art

[0002] Due to the advantages of plastic fuel tanks such as light weight, corrosion resistance, and higher freedom in product shape design, most current automotive fuel tanks use plastic fuel tanks. Although plastic fuel tanks have many benefits, since the material used for plastic fuel tanks is HDPE, it has deficiencies in resisting pressure deformation. For example, in terms of the resistance to deformation under the action of fuel gravity deformation and infiltration aging of plastic fuel tanks, the resistance to deformation is poor. The processing of the existing fuel tank reinforcing columns by coating is difficult, costly, and the connection performance is poor. Content of the Utility Model

[0003] The utility model provides an internal reinforcing column of a plastic high-pressure fuel tank, which solves the problems of difficult coating processing, high cost, and poor connection performance of the fuel tank reinforcing column in the related art.

[0004] The technical solution of the utility model is as follows:

[0005] An internal reinforcing column of a plastic high-pressure fuel tank, comprising

[0006] a support member, the support member having a connecting portion, the connecting portion having a connecting hole and a reinforcing end,

[0007] a fixing member, the fixing member being disposed on the connecting portion, the fixing member covering the reinforcing end and passing through the connecting hole.

[0008] As a further technical solution, the support member has a communicating hole, and the communicating holes are arranged in several rows.

[0009] As a further technical solution, there are several reinforcing ends of the support member, and the fixing member has a thickening portion, and the thickening portion is disposed on one side of the reinforcing end.

[0010] As a further technical solution, the fixing member is provided with several overflow holes, and the overflow holes are through holes.

[0011] As a further technical solution, one end of the fixing member away from the support member has a welding portion, and the welding portions are arranged in several rows.

[0012] As a further technical solution, the welding portion is cylindrical or square.

[0013] As a further technical solution, the side surfaces of both ends of the support member have protruding portions, and the fixing member covers the protruding portions.

[0014] As a further technical solution, both the support member and the fixing member are arc-shaped members.

[0015] As a further technical solution, a number of reinforcing ribs are provided inside the communication hole, and the support member has a wave baffle, and the wave baffles are arranged in a number.

[0016] As a further technical solution, the fixing member has a first thickening portion and a second thickening portion, the welding portion is provided on the second thickening portion, and the thickness of the second thickening portion is greater than that of the first thickening portion.

[0017] The working principle and beneficial effects of the present utility model are as follows:

[0018] In the utility model, the design purpose of the built-in reinforcement column of the plastic high-pressure fuel tank is to improve the structural strength and stability of the fuel tank and ensure the safety performance of the fuel tank under high pressure and harsh environment. The design forms a strong and lightweight reinforcement structure by combining the support and the fixing to cope with the forces at different angles borne by the high-pressure fuel tank during the driving of the vehicle. The core of the support is the connecting part, which is provided with a connecting hole for matching with the fixing to form a stable connection point. At the same time, the connecting part is the core component of the connection between the support and the fuel tank. The design of the connecting part needs to consider the utilization efficiency of the internal space of the fuel tank and the matching with the fixing to ensure the maximum strength within the limited space of the fuel tank. The reinforcement end of the connection part is the key part where the support and the fixing are closely combined. The reinforcement end needs to have sufficient strength and rigidity to withstand the coating of the fixing and the concentrated stress at the connection hole. The fixing is designed to be able to be coated on the reinforcement end to form an integrated connection structure. The material selection of the fixings must have good mechanical properties, such as high strength and corrosion resistance, to ensure the connection strength and long-term stability with the support parts. The material of the fixings is the same as the fuel tank to ensure the fixing effect of the fixings and the fuel tank. The fixings must also penetrate the connection holes, and the support parts and the fixings form a mechanical lock to enhance the firmness of the connection. The support parts are made of high-strength nylon material. Through the close combination of the support parts and the fixings, the built-in reinforcement column can significantly improve the structural strength of the plastic high-pressure fuel tank, especially when subjected to high pressure and external impact, it can effectively disperse stress and prevent the fuel tank from deforming or cracking. The design of the reinforcement column takes into account the safety performance of the high-pressure fuel tank under extreme conditions such as vehicle collisions. By enhancing the strength of the connection points, the risk of fuel leakage is reduced and the safety of the overall system is improved. The design of the built-in reinforcement column not only improves the mechanical properties of the fuel tank, but also optimizes the spatial layout of the fuel tank, allowing designers to design the shape and size of the fuel tank more flexibly while ensuring the structural strength to meet the needs of different models. The design of the built-in reinforcement column of the plastic high-pressure fuel tank, through the combination of support parts and fixing parts, not only improves the structural strength and safety of the fuel tank, but also optimizes the design of the fuel tank. Compared with the reinforcement column of the prior art, the split reinforcement column effectively reduces the space occupancy rate of the reinforcement column compared with the overall wrapped reinforcement column of the prior art. The fixing parts arranged at both ends of the support can be fixed by grouting and wrapping. Compared with the overall wrapping scheme of the prior art, especially the breakable or notched reinforcement column, the grouting and wrapping scheme at both ends of the fixing part reduces the processing difficulty. At the same time, the support parts with the same volume can improve the toughness and strength of the reinforcement column, further improve the performance of the reinforcement column, and reduce the processing cost of the reinforcement column. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following will further illustrate the above characteristics, technical features, advantages and their implementation manners of the present utility model in a clear and understandable manner in combination with the accompanying drawings.

[0020] Figure 1 It is a schematic structural diagram of the present utility model;

[0021] Figure 2 It is a schematic structural diagram of the support member in the present utility model;

[0022] Figure 3 It is another schematic structural diagram of the present utility model;

[0023] Figure 4 It is a schematic structural diagram of the present utility model with a wave baffle;

[0024] In the figure: support member - 1, connecting portion - 101, connecting hole - 102, strengthening end - 103, communicating hole - 104, protruding portion - 105, reinforcing rib - 106, wave baffle - 107, fixing member - 2, thickening portion - 201, overflow hole - 202, welding portion - 203, first thickening portion - 204, second thickening portion - 205. Specific embodiments

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the specific embodiments of the present utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings, and other embodiments can also be obtained.

[0026] For the sake of simplicity of the drawings, only the parts related to the utility model are schematically shown in each drawing, and they do not represent the actual structure of the product. In addition, for the sake of simplicity and easy understanding of the drawings, in some drawings, for components with the same structure or function, only one of them is schematically shown, or only one of them is marked. In this article, "one" not only means "only this one", but also means "more than one" situation, and "several" includes "two" and "more than two".

[0027] In this article, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0028] In addition, in the description of the present application, terms such as "first" and "second" are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0029] Referring to Figures 1 to 4 , which is an embodiment of the present utility model, a plastic high-pressure fuel tank with an internal strengthening column is proposed, including a support member 1. The support member 1 has a connecting portion 101. The connecting portion 101 has a connecting hole 102 and a strengthening end 103. A fixing member 2 is provided on the connecting portion 101. The fixing member 2 covers the strengthening end 103 and penetrates through the connecting hole 102.

[0030] In this embodiment, the design purpose of the built-in reinforcement column of the plastic high-pressure fuel tank is to improve the structural strength and stability of the fuel tank and ensure the safety performance of the fuel tank under high pressure and harsh environment. The design forms a strong and lightweight reinforcement structure by combining the support member 1 and the fixing member 2 to cope with the forces at different angles borne by the high-pressure fuel tank during the driving process of the vehicle. The core of the support member 1 is the connecting part 101, and the connecting part 101 is provided with a connecting hole 102, which is used to cooperate with the fixing member 2 to form a stable connection point. At the same time, the connecting part 101 is the core component of the connection between the support member 1 and the fuel tank. The design of the connecting part 101 needs to consider the utilization efficiency of the internal space of the fuel tank and the matching with the fixing member 2 to ensure the maximum strength in the limited space of the fuel tank. The reinforcement end 103 of the connecting part 101 is the key part where the support member 1 and the fixing member 2 are closely combined. The reinforcement end 103 needs to have sufficient strength and rigidity to withstand the coating of the fixing member 2 and the concentrated stress at the connection hole 102. The fixing member 2 is designed to be coated on the reinforcement end 103 to form an integrated connection structure. The material selection of the fixing part 2 needs to have good mechanical properties, such as high strength and corrosion resistance, to ensure the connection strength and long-term stability with the support part 1. The material of the fixing part 2 is the same as the material of the fuel tank to ensure the fixing effect of the fixing part 2 and the fuel tank. The fixing part 2 also needs to penetrate the connection hole 102, and the support part 1 and the fixing part 2 form a mechanical lock to enhance the firmness of the connection. The support part 1 is made of high-strength nylon material. Through the close combination of the support part 1 and the fixing part 2, the built-in reinforcement column can significantly improve the structural strength of the plastic high-pressure fuel tank, especially when subjected to high pressure and external impact, it can effectively disperse stress and prevent the fuel tank from deforming or cracking. The design of the reinforcement column takes into account the safety performance of the high-pressure fuel tank under extreme conditions such as vehicle collision. By enhancing the strength of the connection point, the risk of fuel leakage is reduced and the safety of the overall system is improved. The design of the built-in reinforcement column not only improves the mechanical properties of the fuel tank, but also optimizes the spatial layout of the fuel tank, so that designers can design the shape and size of the fuel tank more flexibly under the premise of ensuring structural strength to meet the needs of different models. The design of the built-in reinforcement column of the plastic high-pressure fuel tank, through the combination of the support member 1 and the fixing member 2, not only improves the structural strength and safety of the fuel tank, but also optimizes the design of the fuel tank. Compared with the reinforcement column of the prior art, the split reinforcement column effectively reduces the space occupancy rate of the reinforcement column compared with the overall wrapped reinforcement column of the prior art. The fixing members 2 arranged at both ends of the support member 1 can be fixed by grouting and wrapping. Compared with the overall wrapping scheme of the prior art, especially the breakable or notched reinforcement column, the grouting and wrapping scheme at both ends of the fixing member 2 reduces the processing difficulty. At the same time, the support member 1 with the same volume can improve the toughness and strength of the reinforcement column, further improve the performance of the reinforcement column, and reduce the processing cost of the reinforcement column.

[0031] Furthermore, the support member 1 has communication holes 104, and the communication holes 104 are arranged in several numbers.

[0032] In this embodiment, several communication holes 104 are designed and reasonably arranged according to the internal structure of the fuel tank and the layout of the strengthening columns. The number and position of the holes need to be calculated to ensure that while improving the gas flowability and fuel flowability, the structural strength of the support member 1 is not affected. The shape and size of the communication holes 104 need to consider the internal fluid dynamics characteristics of the fuel tank and are generally designed as circular or oval to reduce fluid resistance and improve the flow efficiency of gas and fuel. The size needs to balance the structural strength and flow performance. The existence of the communication holes 104 can promote the free flow of gas inside the fuel tank, which helps to evenly distribute the internal pressure during refueling, temperature change or vehicle driving, reduce the formation of local high-pressure or low-pressure areas, and thus reduce the risk of fuel tank rupture. By designing the communication holes 104 on the support member 1, the material usage can be reduced and the structural weight can be lightened. Although the communication holes 104 will reduce the material usage, by optimizing the arrangement and size of the holes, the structural strength of the support member 1 can be maintained or even improved. A reasonable design of the communication holes 104 can form a mutually supporting structural network and enhance the rigidity of the material. The design of the communication holes 104 of the support member 1 with strengthening columns built in the plastic high-pressure fuel tank improves the performance and safety of the fuel tank by optimizing the gas and fuel flowability and structural weight while ensuring the structural strength.

[0033] Furthermore, there are several strengthening ends 103 of the support member 1, and the fixing member 2 has a thickening portion 201, and the thickening portion 201 is arranged on one side of the strengthening end 103.

[0034] In this embodiment, a plurality of strengthening ends 103 of the support member 1 are designed. These strengthening ends 103 are generally located around the connecting portion 101 to form a plurality of support points. The design of the strengthening ends 103 takes into account the stress distribution and structural stability inside the fuel tank. By increasing the local material thickness or adopting special geometric shapes, such as protrusions or ribs, the compressive and tensile strengths of this area are improved. The thickened portion 201 of the fixing member 2 is arranged on one side of the strengthening end 103 and is in close contact with the strengthening end 103. The purpose of the thickened portion 201 is to increase the material thickness in the area where the fixing member 2 contacts the strengthening end 103 to form a more firm connection interface. The shape and size of the thickened portion 201 need to be optimized according to the structure of the strengthening end 103 and the material properties of the fixing member 2 to ensure that the connection surface will not become a weak point of the structure when under high pressure. The combination of the strengthening end 103 and the thickened portion 201 significantly improves the structural strength of the strengthening column. Under the action of high pressure, the thickened portion 201 can effectively disperse stress and prevent material fatigue or fracture at the connection between the fixing member 2 and the strengthening end 103. By arranging the strengthening end 103 and the thickened portion 201 at key positions, the stress distribution inside the fuel tank can be optimized, stress concentration can be avoided, and it is ensured that the fuel tank can maintain its structural integrity under complex working conditions and avoid leakage or explosion. The design of the strengthening end 103 and the thickened portion 201 improves the durability of the strengthening column, reduces structural damage caused by long-term use or extreme environmental changes, and extends the service life of the fuel tank. The design of the strengthening end 103 and the thickened portion 201 of the built-in strengthening column in the plastic high-pressure fuel tank not only improves the safety and reliability of the fuel tank but also extends its service life by enhancing the structural strength of key positions and optimizing the stress distribution.

[0035] Furthermore, the fixing member 2 is provided with a plurality of overflow holes 202, and the overflow holes 202 are through holes.

[0036] In this embodiment, the overflow hole 202 is designed as a through hole, that is, it completely penetrates the two surfaces of the fixing member 2. This design ensures that during the injection molding process, the excess molten plastic can overflow from the overflow hole 202, avoiding the formation of bubbles or voids inside the fixing member 2, thereby improving the density and strength of the part. The number and layout of the overflow holes 202 need to be determined according to the size and shape of the fixing member 2 and the requirements of the injection molding process. Usually, the overflow holes 202 are arranged at the edges of the fixing member 2 or in the corners that are not easily filled to ensure uniform material distribution throughout the part. The setting of the overflow holes 202 helps to discharge the air and volatile substances generated during the injection molding process, avoid the formation of bubbles, and improve the density and surface finish of the molded part. In addition, the overflow holes 202 can also serve as auxiliary channels for material flow to ensure that the molten plastic can uniformly fill every corner of the fixing member 2, improving the molding efficiency. By optimizing the layout and size of the overflow holes 202, it can be ensured that the fixing member 2 has good structural integrity after molding, avoiding a decrease in pressure resistance performance caused by internal defects, ensuring that the fuel tank remains stable under high pressure, and improving safety performance. The design of the overflow holes 202 of the fixing member 2 with built-in strengthening columns in the plastic high-pressure fuel tank improves the molding quality and structural performance of the part by optimizing the material fluidity and exhaust effect during the injection molding process.

[0037] Further, one end of the fixing member 2 away from the support member 1 has a welding portion 203, and the welding portions 203 are arranged in several rows.

[0038] In this embodiment, the welding parts 203 are designed to be arranged in several rows, usually located at the end of the fixing part 2 and facing the inside of the fuel tank housing. These welding parts 203 are fused with the fuel tank housing material during the injection molding process to form a continuous and seamless connection surface, thereby enhancing the mechanical connection and sealing performance between the fixing part 2 and the housing. The number and layout of the welding parts 203 need to be determined according to the size and shape of the fixing part 2 and the structure of the fuel tank housing. Usually, more welding parts 203 are arranged around the fixing part 2 or in the stress concentration areas to improve the connection strength and distribute the pressure. The design of the welding parts 203 ensures a firm connection between the fixing part 2 and the fuel tank housing. Even in a high-pressure and vibration environment, the structural stability and integrity can be maintained, and the fixing part 2 can be prevented from loosening or falling off. The fusion of the welding parts 203 with the fuel tank housing forms a sealing interface, effectively preventing the leakage of fuel or gas, improving the sealing performance of the fuel tank under high-pressure conditions, and ensuring the safe operation of the vehicle. By arranging the welding parts 203 on the fixing part 2, the overall structural strength of the fuel tank can be optimized, especially the compressive and tensile strengths of the reinforcing column area can be improved, ensuring the structural stability and reliability of the fuel tank under complex working conditions. The design of the welding parts 203 of the fixing part 2 with built-in reinforcing columns in the plastic high-pressure fuel tank not only improves the structural strength and safety of the fuel tank by enhancing the mechanical connection and sealing performance between the fixing part 2 and the fuel tank housing, but also optimizes the overall performance of the fuel tank.

[0039] Furthermore, the welding part 203 is cylindrical or square.

[0040] In this embodiment, the welding part 203 is designed in a cylindrical shape. This shape can provide a more uniform pressure distribution during the injection molding process, which helps the materials to be fully fused at the welding interface. The diameter and length of the cylindrical welding part 203 need to be optimized according to the size of the fixing part 2 and the structural requirements of the fuel tank housing to ensure the best welding effect and structural strength. The cylindrical design is beneficial to the flow of the molten plastic during the injection molding process, and can ensure the full fusion of the welding part 203 and the fuel tank housing material, forming a strong mechanical connection. The use of the cylindrical welding part 203 improves the connection stability between the fixing part 2 and the fuel tank housing, and enhances the structural strength. Especially under the working conditions of high pressure and vibration, it can effectively disperse stress and prevent cracking or loosening at the welding point. After being fused with the fuel tank housing, the cylindrical welding part 203 is completely integrated into the interior of the fuel tank housing, thus forming a continuous and seamless sealing interface, effectively preventing the leakage of fuel or gas, and improving the sealing performance and safety of the fuel tank. The design of the cylindrical welding part 203 simplifies the structure of the injection mold, reduces the manufacturing difficulty and cost, and at the same time ensures the stability and repeatability of the welding process, improving the production efficiency. A square welding part 203 can provide a better connection effect when connecting some special fuel tanks. The design of the cylindrical welding part 203 with built-in strengthening columns in the plastic high-pressure fuel tank not only improves the structural strength and sealing performance of the fuel tank by optimizing the bonding effect between the welding part 203 and the fuel tank housing, but also simplifies the production process.

[0041] Furthermore, both sides of the two ends of the support part 1 have convex parts 105, and the fixing part 2 covers the convex parts 105.

[0042] In this embodiment, the protrusion 105 is located on the side of the two ends of the support member 1, and its shape is usually semicircular, trapezoidal or other geometric shapes that are convenient for wrapping with the fixing member 2. The design of the protrusion 105 needs to take into account the contact area and mechanical bite effect when wrapping with the fixing member 2 to ensure the firmness of the connection. The main function of the protrusion 105 is to increase the contact area between the support member 1 and the fixing member 2, form a mechanical bite through the wrapping of the fixing member 2, and improve the bonding strength between the two. Under high pressure, the protrusion 105 can effectively disperse stress, avoid stress concentration at the connection, and reduce the risk of structural failure. The design of the protrusion 105 increases the contact area between the support member 1 and the fixing member 2, and the mechanical bite formed by the wrapping of the fixing member 2 significantly improves the bonding strength between the two. This structure can remain stable when subjected to high pressure and dynamic loads, and prevent the fixing member 2 from falling off the support member 1. The presence of the protrusion 105 helps to optimize the stress distribution, avoid stress concentration at a few points, reduce material fatigue and crack propagation caused by stress concentration, and improve the durability and safety of the reinforced column. The design of the raised portion 105 of the support member 1 of the built-in reinforcement column of the plastic high-pressure fuel tank improves the stability of the reinforcement column structure and the safety performance of the fuel tank by enhancing the connection strength between the support member 1 and the fixing member 2 and optimizing the stress distribution.

[0043] Furthermore, the supporting member 1 and the fixing member 2 are both arc-shaped members.

[0044] In this embodiment, both the support member 1 and the fixing member 2 are arc-shaped, which can imitate the natural curve of a cylinder and provide a more uniform stress distribution. The radius of curvature of the arc-shaped member needs to be optimized according to the internal space of the fuel tank, the high-pressure bearing requirements and the material properties. The design of the arc-shaped member needs to use high-strength and high-toughness plastic materials to ensure the stability and safety of the structure under high-pressure environment. At the same time, the lightweight characteristics of the arc-shaped member help to reduce the overall weight of the fuel tank, improve fuel efficiency and vehicle handling performance. The arc-shaped member design can provide a more uniform stress distribution, reduce stress concentration points, and improve the compressive strength and overall structural strength of the reinforcing column. Under high pressure, the arc structure can more effectively disperse stress and avoid structural failure caused by local overload. Compared with a linear or planar structure, the arc-shaped member design can reduce the use of materials and achieve lightweight while ensuring structural strength. This not only reduces production costs, but also reduces the weight of the fuel tank, which has a positive effect on improving vehicle fuel economy and reducing carbon emissions. The structure of the arc-shaped part can better adapt to the complex geometric shape inside the fuel tank, form a tighter sealing interface, reduce the risk of leakage of fuel or gas under high pressure, and improve the safety performance of the fuel tank. The support part 1 and the fixing part 2 of the built-in reinforcement column of the plastic high-pressure fuel tank adopt the arc-shaped part design, which improves the mechanical strength and stability of the reinforcement column by optimizing the structural form.

[0045] Furthermore, a number of reinforcing ribs 106 are arranged inside the communication holes 104, and the support member 1 is provided with a wave baffle 107, and a number of wave baffles 107 are arranged in an array.

[0046] In this embodiment, the reinforcing rib 106 is located inside the communication hole 104, and its layout needs to be optimized according to the shape, size of the communication hole 104 and the force analysis of the reinforcing column. The reinforcing rib 106 can be linear, cross-shaped or grid-shaped to provide multi-directional support and enhance the integrity of the structure. The reinforcing rib 106 is usually made of the same material as the main body of the reinforcing column, and the shape design needs to consider the minimum obstruction to fluid flow while ensuring the structural strength under high pressure. The thickness and shape of the reinforcing rib 106 need to be calculated to balance the structural strength and hydrodynamic performance. The setting of the reinforcing rib 106 can significantly improve the structural strength around the communication hole 104 and reduce the risk of local deformation or cracking caused by high pressure or dynamic loads. The presence of the reinforcing rib 106 makes the area of the communication hole 104 a strengthening point in the reinforcing column structure rather than a weak link. By arranging the reinforcing rib 106 inside the communication hole 104, the stress distribution can be optimized, stress concentration can be avoided, and the compressive capacity and overall structural stability of the reinforcing column can be improved. The reinforcing rib 106 can disperse and guide stress to ensure that the stress distribution is more uniform when the reinforcing column bears high pressure. The layout and design of the reinforcing rib 106 can enhance the sealing performance around the communication hole 104, reduce the risk of fuel or gas leakage under high pressure, and improve the safety performance and reliability of the fuel tank. The design of arranging the reinforcing rib 106 inside the communication hole 104 of the built-in reinforcing column of the plastic high-pressure fuel tank not only enhances the stability of the reinforcing column and the safety performance of the fuel tank by improving the structural strength and optimizing the stress distribution, but also optimizes the overall design. A plurality of arranged anti-slosh plates 107 are arranged at appropriate positions of the support member 1, and these anti-slosh plates 107 can be manufactured together with the support member 1 by means of plastic integral molding. The design of the anti-slosh plate 107 can be a vertical baffle or a wavy structure to reduce the sloshing of the liquid inside the fuel tank and improve the stability of the fuel tank. During vehicle driving, especially during acceleration, deceleration, turning or bumpy road conditions, the liquid inside the fuel tank is prone to sloshing, which may not only cause the fuel pump to suck in air and affect the normal operation of the engine, but also impact the structure of the fuel tank and reduce the service life of the fuel tank. By arranging a plurality of arranged anti-slosh plates 107 on the support member 1, the sloshing of the liquid inside the fuel tank can be effectively reduced, ensuring the stability and reliability of the fuel system. The anti-slosh plate 107 can be a vertical baffle or a wavy structure, and their design can be optimized according to the shape and size of the fuel tank to minimize liquid sloshing. Liquid sloshing generates noise, especially more obvious when the fuel tank is empty or half full. By reducing liquid sloshing, the anti-slosh plate 107 can effectively reduce the noise level inside the fuel tank and improve driving comfort. Long-term liquid sloshing will impact the fuel tank wall, resulting in fatigue damage to the fuel tank wall. By reducing liquid sloshing, the anti-slosh plate 107 can reduce the impact on the fuel tank wall and extend the service life of the fuel tank. The fuel pump needs a stable fuel supply to operate.If the liquid in the fuel tank sloshes too violently, the fuel pump may suck in air or foam, resulting in unstable operation of the fuel pump. The anti-slosh plate 107 can ensure a stable fuel supply to the fuel pump by reducing liquid sloshing, improve the working conditions of the fuel pump, and ensure the efficient and reliable operation of the plastic high-pressure fuel tank under various driving conditions.

[0047] Furthermore, the fixing member 2 has a first thickened portion 204 and a second thickened portion 205, and the welding portion 203 is provided on the second thickened portion 205, and the thickness of the second thickened portion 205 is greater than that of the first thickened portion 204.

[0048] In this embodiment, the design of the first thickened portion 204 and the second thickened portion 205 increases the material thickness of the fixing member 2 in specific areas, thereby improving the mechanical strength of these areas. The first thickened portion 204 is usually located in the non-connection area of the fixing member 2 to enhance the structural strength of the fixing member 2 itself; while the second thickened portion 205 is located near the welding portion 203 to strengthen the connection point between the fixing member 2 and the fuel tank housing. The welding portion 203 is provided on the second thickened portion 205. Since the second thickened portion 205 has a greater thickness, it can provide a stronger welding interface, ensure a firm bond between the fixing member 2 and the fuel tank housing, and improve the pressure resistance and sealing performance of the connection point. The thickness of the second thickened portion 205 is greater than that of the first thickened portion 204, making the material in the area where the welding portion 203 is located thicker, capable of withstanding higher stresses, improving the connection strength between the fixing member 2 and the fuel tank housing, and ensuring the structural stability and safety of the strengthening column in a high-pressure environment. By providing thickened portions 201 with different thicknesses on the fixing member 2, the stress distribution can be optimized, avoiding excessive stress concentration and reducing the risk of structural failure. The design of the second thickened portion 205 can better disperse the stress near the welding portion 203 and improve the overall structural performance of the strengthening column. The combination of the second thickened portion 205 and the welding portion 203 improves the sealing performance of the connection point, reduces the risk of fuel or gas leakage under high pressure, and ensures the safe operation of the fuel tank under various working conditions. The design of the first thickened portion 204 and the second thickened portion 205 of the strengthening column built into the plastic high-pressure fuel tank not only improves the connection strength between the strengthening column and the fuel tank housing, but also enhances the structural stability and sealing performance by optimizing the structure of the fixing member 2.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A plastic high-pressure fuel tank with a built-in reinforcement column, characterized in that: include A support member (1), the support member (1) having a connecting portion (101), the connecting portion (101) having a connecting hole (102) and a reinforcing end (103), A fixing member (2), the fixing member (2) being arranged on the connecting portion (101), the fixing member (2) being wrapped around the reinforcing end (103) and passing through the connecting hole (102).

2. A plastic high pressure fuel tank internal reinforcement column according to claim 1, characterized in that: The support member (1) has a communication hole (104), and a plurality of the communication holes (104) are arranged in an array.

3. A plastic high pressure fuel tank with built-in reinforcement column according to claim 1, characterized in that: The support member (1) has a plurality of reinforced ends (103), and the fixing member (2) has a thickened portion (201), wherein the thickened portion (201) is arranged on one side of the reinforced end (103).

4. A plastic high pressure fuel tank with built-in reinforcement column according to claim 1, characterized in that: The fixing member (2) is provided with a plurality of overflow holes (202), and the overflow holes (202) are through holes.

5. A plastic high pressure fuel tank with built-in reinforcement column according to claim 1, characterized in that: The fixing member (2) has a welding portion (203) at one end away from the supporting member (1), and a plurality of the welding portions (203) are arranged in an array.

6. A plastic high pressure fuel tank internal reinforcement column according to claim 5, characterized in that: The welding portion (203) is cylindrical or square.

7. A plastic high pressure fuel tank with built-in reinforcement column according to claim 1, characterized in that: The side surfaces of both end portions of the support member (1) are provided with protrusions (105), and the fixing member (2) covers the protrusions (105).

8. A plastic high pressure fuel tank internal reinforcement column according to claim 1, characterized in that: The supporting member (1) and the fixing member (2) are both arc-shaped members.

9. A plastic high pressure fuel tank internal reinforcement column according to claim 2, characterized in that: A plurality of reinforcing ribs (106) are arranged inside the communicating hole (104), and the supporting member (1) has a wave-breaking plate (107), wherein a plurality of wave-breaking plates (107) are arranged in an array.

10. A plastic high pressure fuel tank internal reinforcement column according to claim 6, characterized in that: The fixing member (2) comprises a first thickened portion (204) and a second thickened portion (205); the welding portion (203) is arranged on the second thickened portion (205); the thickness of the second thickened portion (205) is greater than that of the first thickened portion (204).

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