Outer rear supporting plate of LNG vehicle-mounted gas cylinder

Abstract

The utility model discloses an outer rear supporting plate of an LNG (liquefied natural gas) vehicle-mounted gas cylinder, which relates to the technical field of the LNG vehicle-mounted gas cylinder, and comprises a metal shell, a vacuum heat insulation cavity is arranged on the inner side of the metal shell, and the main body of the rear supporting plate is an important supporting structure of the rear part of the LNG vehicle-mounted gas cylinder and is connected with a supporting shaft; meanwhile, the design of the rear supporting plate main body and the cavity groove is beneficial to reducing the weight and improving the heat insulation performance, specifically, the rear supporting plate main body is made of high-strength and light materials and stainless steel such as aluminum alloy or high-strength steel, the design of the cavity groove not only reduces the weight, but also reduces the heat conduction path, and therefore the heat insulation performance of the gas cylinder is improved. And the reinforcing plate and the rear supporting plate main body form an integral structure through connection modes such as welding and the like, so that various loads of the gas cylinder in the using process are borne together, the sectional area and the rigidity of the gas cylinder are increased, and the bearing capacity and the non-deformability of the gas cylinder are improved.

Description

Technical Field

[0001] This utility model relates to the field of LNG vehicle-mounted gas cylinder technology, specifically to an outer rear support plate for an LNG vehicle-mounted gas cylinder. Background Technology

[0002] Liquefied natural gas (LNG) is a recognized clean energy source, primarily composed of methane (CH4) and ethane (C2H6), produced by liquefying natural gas at -162°C. Compared to gasoline, LNG causes less environmental pollution, has a larger storage capacity for the same volume, and offers a longer driving range. It also has a price advantage over diesel and, compared to compressed natural gas, boasts higher storage efficiency and a longer driving range. Therefore, an increasing number of heavy-duty truck manufacturers are adopting LNG as their energy source.

[0003] The rear support plate of the LNG vehicle-mounted gas cylinder is an important component connecting the inner liner and the outer shell, ensuring the stability of the gas cylinder when placed horizontally or vertically. At the same time, by docking with the vehicle body, it ensures the safety of the gas cylinder during transportation. The reinforcing plate is usually used to enhance the structural strength. In the rear support plate, the reinforcing plate is fixedly connected to the inner wall of the metal outer shell and connected to the main body of the rear support plate through welding rods, forming a stable support structure, which helps to improve the pressure resistance and service life of the gas cylinder.

[0004] However, the existing rear support plate of LNG vehicle cylinders is usually a single piece, which has the problems of being heavy, leaking a lot of heat, and not being strong enough.

[0005] Therefore, in view of this, we studied and improved the existing structure to address its shortcomings, and proposed an external rear support plate for LNG vehicle-mounted gas cylinders. Utility Model Content

[0006] The purpose of this utility model is to provide an external rear support plate for LNG vehicle-mounted gas cylinders, in order to solve the problems mentioned in the background art that the existing external rear support plates for LNG vehicle-mounted gas cylinders are usually a single piece of material, which is heavy, leaks a lot of heat, and has low strength.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an outer rear support plate for an LNG vehicle-mounted gas cylinder, comprising a metal outer shell, a vacuum insulation cavity provided on the inner side of the metal outer shell, the vacuum insulation cavity being made of aluminum foil and glass fiber in an alternating winding manner, an inner liner body provided on the inner side of the vacuum insulation cavity, a support neck tube for fixed connection between the inner liner body and the top of the metal outer shell, a support shaft being fixedly connected through the lower end of the inner liner body, a rear support plate body being provided on the outer wall of the support shaft at the lower end face of the inner liner body, the rear support plate body having uniformly opened cavity grooves, and a reinforcing plate being welded to the lower end face of the rear support plate body.

[0008] Furthermore, the outer edge of the main body of the rear support plate is fixedly connected to the metal shell.

[0009] Furthermore, the outer edge of the reinforcing plate is fixedly connected to the inner wall of the metal shell, and six sets of welding rods are fixedly connected inside the reinforcing plate. The main body of the rear support plate is clamped onto the reinforcing plate by the six sets of welding rods and welded together.

[0010] Furthermore, the outer edge of the reinforcing plate is fixedly connected to the inner wall of the metal shell, and six sets of welding rods are fixedly connected inside the reinforcing plate. The main body of the rear support plate is clamped onto the reinforcing plate by the six sets of welding rods and welded together.

[0011] Furthermore, a rubber plate is fixedly connected to the upper end face of the rear support plate body, and the rubber plate is in contact with the outer wall of the inner liner body.

[0012] Furthermore, the outer wall of the metal shell is wound with an outer composite material fiber layer, which is made of hybrid fibers and polycarbosilane resin, including carbon fiber and basalt fiber.

[0013] Furthermore, the outer wall of the inner liner body is wrapped with an inner composite material fiber layer, which is made of carbon fiber and graphene oxide modified epoxy resin.

[0014] Furthermore, the outer wall of the inner liner body is fixedly connected to four ends of a support block, and the outer wall of the support block is fixedly connected to an insulation block, and the outer wall of the insulation block is fixedly connected to the metal shell.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model's rear support plate is a crucial support structure for the rear of LNG vehicle cylinders. Connected to the support shaft, it provides additional support and stability to the cylinders. The cavity design of the rear support plate helps reduce weight and improve thermal insulation. Specifically, the rear support plate is made of high-strength, lightweight materials such as aluminum alloy or high-strength steel. The cavity design reduces weight and minimizes heat conduction paths, thus improving the cylinder's thermal insulation. The reinforcing plate is made of the same or similar material as the rear support plate to ensure a good connection and coordinated operation. Through welding or other connection methods, the reinforcing plate and the rear support plate form a unified structure, jointly bearing various loads during cylinder use, increasing its cross-sectional area and stiffness, thereby improving its load-bearing capacity and resistance to deformation. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the main body of the device;

[0018] Figure 2A three-dimensional structural diagram showing the cross-section of the metal casing;

[0019] Figure 3 A schematic diagram of the three-dimensional connection structure of the main body of the rear support plate;

[0020] Figure 4 This is a three-dimensional structural diagram of the metal outer shell and the inner liner.

[0021] In the diagram: 1. Metal outer shell; 2. Support neck tube; 3. Vacuum insulation cavity; 4. Inner liner body; 5. Support shaft; 501. Rear support plate body; 502. Cavity groove; 6. Reinforcing plate; 7. Welding rod; 8. Rubber plate; 9. Inner composite fiber layer; 10. Outer composite fiber layer; 11. Support block; 12. Insulation block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] like Figure 1 - Figure 4As shown, an outer rear support plate for an LNG vehicle-mounted gas cylinder includes a metal outer shell 1, providing a robust protective layer to prevent physical damage to the cylinder from external sources. As the external structure of the cylinder, it supports the entire cylinder and withstands external pressure and impact, providing sufficient strength and rigidity to protect the inner liner body 4 and the cryogenic liquefied natural gas (LNG) within. Simultaneously, the metal outer shell 1 also serves as an external barrier for the vacuum insulation cavity 3, helping to maintain the stability of the vacuum environment. The vacuum insulation cavity 3 is located inside the metal outer shell 1, and it is constructed using alternating winding of aluminum foil and glass fiber. The vacuum insulation cavity 3 is crucial for the LNG vehicle-mounted gas cylinder. The key insulation structure effectively reduces heat exchange between the inner liner body 4 and the external environment, thereby extending the LNG storage time. The alternating winding of aluminum foil and glass fiber further enhances the insulation effect. The vacuum insulation cavity 3 utilizes the low thermal conductivity of the vacuum environment to minimize heat exchange between the inner liner body and the external environment. Aluminum foil and glass fiber, as insulation materials, respectively reflect heat radiation and block heat conduction. Through alternating winding, they work together to form a highly efficient insulation barrier. The inner liner body 4 is located inside the vacuum insulation cavity 3. The inner liner body 4 is the core component of the LNG vehicle cylinder and is used to store cryogenic LNG. The LNG tank must be able to withstand extremely low temperatures and high pressures while maintaining structural integrity and sealing. The inner liner body 4 is typically made of high-strength, low-temperature-resistant materials such as austenitic stainless steel, possessing excellent low-temperature toughness and corrosion resistance. This ensures the safety and stability of LNG during storage and transportation. A support neck 2 is provided at the top of the inner liner body 4 and the metal outer shell 1 for fixed connection. A support shaft 5 is fixedly connected to the lower end of the inner liner body 4. The support neck 2 and support shaft 5 together constitute the support structure of the LNG vehicle-mounted cylinder, ensuring a stable connection between the inner liner body 4 and the metal outer shell 1, and bearing... The gas cylinder bears various loads during use. The specific support neck tube 2 is usually located at the top of the gas cylinder, used to connect the inner liner body 4 to the top of the metal shell 1. The support 5 is located at the bottom of the gas cylinder, passing through the inner liner body 4 and connected to the rear support plate 501 body, providing additional support and stability for the gas cylinder. The support structure is usually made of high-strength, corrosion-resistant materials to ensure its long-term stable operation. The outer wall of the support shaft 5 is provided with the rear support plate body 501 at the lower end face of the inner liner body 4. The rear support plate body 501 is evenly provided with cavity grooves 502, and the lower end face of the rear support plate body 501 is welded with a reinforcing plate 6.

[0025] Furthermore, the outer edge of the rear support plate body 501 is fixedly connected to the metal shell 1, and the outer edge of the reinforcing plate 6 is fixedly connected to the inner wall of the metal shell 1. Six sets of welding rods 7 are fixedly connected inside the reinforcing plate 6, and the rear support plate body 501 is assembled by welding and engaging the six sets of welding rods 7 onto the reinforcing plate 6. The rear support plate body 501 is an important support structure at the rear of the LNG vehicle's gas cylinder. It provides additional support and stability to the gas cylinder by connecting to the support shaft 5. Simultaneously, the cavity groove 502 design of the rear support plate body 501 helps reduce weight and improve insulation. In terms of performance, the main body 501 of the rear support plate is made of high-strength, lightweight materials, such as aluminum alloy or high-strength steel. The design of the cavity groove 502 reduces weight and the heat conduction path, thereby improving the thermal insulation performance of the gas cylinder. The reinforcing plate 6 is made of the same or similar materials as the main body 501 of the rear support plate to ensure good connection and coordinated work between the two. Through welding and other connection methods, the reinforcing plate 6 and the main body 501 of the rear support plate form an integral structure, jointly bearing various loads of the gas cylinder during use, increasing its cross-sectional area and stiffness, thereby improving its load-bearing capacity and resistance to deformation.

[0026] Furthermore, the outer edge of the reinforcing plate 6 is fixedly connected to the inner wall of the metal shell 1, and six sets of welding rods 7 are fixedly connected inside the reinforcing plate 6. The rear support plate body 501 is engaged with the reinforcing plate 6 and welded together by the six sets of welding rods 7. The fixed connection between the reinforcing plate 6 and the inner wall of the metal shell 1, as well as the welding between the reinforcing plate 6 and the rear support plate body 501 by the six sets of welding rods 7, significantly enhances the strength and stability of the entire support structure. The reinforced design can withstand greater pressure and weight, ensuring the stability and safety of the gas cylinder during operation. The presence of the reinforcing plate 6 significantly enhances the structural strength of the rear support plate, making it more stable and reliable when facing external pressure, impact, or vibration. The engagement and welding of the welding rods 7 further improves the connection strength between the reinforcing plate 6 and the rear support plate 501, ensuring the stability of the overall structure.

[0027] Furthermore, a rubber plate 8 is fixedly connected to the upper end face of the rear support plate body 501, and the rubber plate 8 contacts the outer wall of the inner liner body 4. The rubber plate 8 serves as a buffer layer between the rear support plate body 501 and the inner liner body 4, which can effectively reduce friction and wear between the two and protect the outer wall of the inner liner from damage.

[0028] Example 2

[0029] like Figure 1 and Figure 4As shown, the present invention proposes an external rear support plate for an LNG vehicle-mounted gas cylinder. Compared to Embodiment 1, as another embodiment of the present invention, an outer composite material fiber layer 10 is wound around the outer wall of the metal outer shell 1. The outer composite material fiber layer 10 is made of hybrid fibers and polycarbosilane resin, and the hybrid fibers include carbon fiber and basalt fiber. An inner composite material fiber layer 9 is wound around the outer wall of the inner liner body 4. The inner composite material fiber layer 9 is made of carbon fiber and graphene oxide modified epoxy resin. Using low-temperature resistant, high-performance carbon fiber reinforced composite material as the winding layer can reduce the weight of the LNG cylinder, improve the rigidity of the LNG cylinder, and at the same time ensure... The LNG cylinder's performance under cryogenic conditions is achieved through an inner composite fiber layer 9 and an outer composite fiber layer 10. The fiber winding direction alternates between helical and circumferential winding. Low-temperature resistant, high-performance carbon fiber reinforced composite material is used as the winding layer, which can reduce the weight of the inner shell, improve the rigidity of the inner shell, and ensure the performance of the inner shell under cryogenic conditions. The metal outer shell 1 of the composite LNG cylinder has an outer composite fiber layer 10. Polycarbosilane is used as the winding resin matrix to improve the fire resistance of the outer shell. Basalt fiber and carbon fiber are used as reinforcing fibers. Basalt fiber provides the LNG cylinder with drop resistance, and carbon fiber increases the rigidity of the cylinder while reducing the weight of the outer shell.

[0030] Furthermore, support blocks 11 are fixedly connected to the four ends of the outer wall of the inner liner body 4, and insulation blocks 12 are fixedly connected to the outer wall of the support blocks 11. The outer wall of the insulation blocks 12 is fixedly connected to the metal shell 1. The main function of the support blocks 11 is to provide structural support, ensure that the inner liner body 4 remains stable inside the metal shell 1, and prevent damage due to vibration or impact during vehicle operation. By fixing the support blocks 11 to the four ends of the outer wall of the inner liner body 4, a stable support structure can be formed, improving the strength and rigidity of the entire gas cylinder. The insulation blocks 12 are usually made of high thermal resistance materials, such as multi-layer insulation materials or vacuum insulation panels. These materials can effectively block heat conduction and heat radiation, improving the insulation performance of the gas cylinder. By fixing the insulation blocks 12 to the outer wall of the support blocks 11 and fixing the outer wall of the insulation blocks 12 to the metal shell 1, a complete insulation system can be formed, further improving the heat preservation effect of the gas cylinder.

[0031] Working Principle: The outer rear support plate of the LNG vehicle-mounted gas cylinder, including the metal outer shell 1, provides a robust protective layer to prevent physical damage to the cylinder from the outside. As the external structure of the cylinder, it supports the entire cylinder and withstands external pressure and impact, providing sufficient strength and rigidity to protect the inner liner body 4 and the cryogenic liquefied natural gas (LNG) inside. Simultaneously, the metal outer shell 1 also serves as an external barrier for the vacuum insulation cavity 3, helping to maintain the stability of the vacuum environment. The key feature is that a vacuum insulation cavity 3 is provided inside the metal outer shell 1. The vacuum insulation cavity 3 uses aluminum foil and glass fiber, wrapped alternately. The vacuum insulation cavity 3 is a crucial insulation structure for the LNG vehicle-mounted gas cylinder, effectively reducing heat exchange between the inner liner body 4 and the external environment, thereby extending the LNG storage time. The alternating wrapping of aluminum foil and glass fiber further enhances the insulation effect. The vacuum insulation cavity 3 utilizes the low thermal conductivity of the vacuum environment to minimize heat exchange between the inner liner body and the external environment. Aluminum foil and glass fiber, as insulation materials, respectively reflect heat radiation and block heat conduction. Through alternating wrapping, they work together to form highly efficient insulation. The inner liner body 4 is located inside the vacuum insulation cavity 3. The inner liner body 4 is a core component of the LNG vehicle-mounted gas cylinder, used to store cryogenic LNG. It must be able to withstand extremely low temperatures and high pressure environments while maintaining structural integrity and sealing. Specifically, the rear support plate body 501 is an important support structure at the rear of the LNG vehicle-mounted gas cylinder. Connected to the support shaft 5, it provides additional support and stability to the cylinder. Furthermore, the cavity groove 502 design of the rear support plate body 501 helps reduce weight and improve insulation performance. Specifically, the rear support plate body 50... 1. Made of high-strength, lightweight materials, such as aluminum alloy or high-strength steel, the design of the cavity groove 502 reduces weight and the heat conduction path, thereby improving the thermal insulation performance of the gas cylinder. The reinforcing plate 6 is made of the same or similar material as the rear support plate body 501 to ensure good connection and coordinated work between the two. Through welding and other connection methods, the reinforcing plate 6 and the rear support plate body 501 form an integral structure, jointly bearing various loads of the gas cylinder during use, increasing its cross-sectional area and stiffness, thereby improving its load-bearing capacity and deformation resistance.

[0032] This is the working principle of the rear support plate of this type of LNG vehicle-mounted gas cylinder.

[0033] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. An outer rear support plate for an LNG vehicle-mounted gas cylinder, comprising a metal outer shell (1), characterized in that, The inner side of the metal shell (1) is provided with a vacuum insulation cavity (3). The vacuum insulation cavity (3) is made of aluminum foil and glass fiber, which are wound alternately. The inner liner body (4) is provided on the inner side of the vacuum insulation cavity (3). The top of the inner liner body (4) and the metal shell (1) are provided with a support neck tube (2) for fixed connection between the two. The lower end of the inner liner body (4) is fixedly connected with a support shaft (5). The outer wall of the support shaft (5) is provided with a rear support plate body (501) on the lower end face of the inner liner body (4). The rear support plate body (501) is evenly provided with cavity grooves (502). The lower end face of the rear support plate body (501) is welded with a reinforcing plate (6).

2. The rear support plate for an LNG vehicle-mounted gas cylinder according to claim 1, characterized in that, The outer edge of the rear support plate body (501) is fixedly connected to the metal shell (1).

3. The rear support plate for an LNG vehicle-mounted gas cylinder according to claim 1, characterized in that, The outer edge of the reinforcing plate (6) is fixedly connected to the inner wall of the metal shell (1), and six sets of welding rods (7) are fixedly connected inside the reinforcing plate (6). The rear support plate body (501) is engaged with the reinforcing plate (6) by the six sets of welding rods (7) and welded together.

4. The rear support plate for an LNG vehicle-mounted gas cylinder according to claim 1, characterized in that, A rubber plate (8) is fixedly connected to the upper end face of the rear support plate body (501), and the rubber plate (8) is in contact with the outer wall of the inner liner body (4).

5. The rear support plate for an LNG vehicle-mounted gas cylinder according to claim 1, characterized in that, The outer wall of the inner liner body (4) is fixedly connected to four ends of a support block (11), and the outer wall of the support block (11) is fixedly connected to an insulation block (12), and the outer wall of the insulation block (12) is fixedly connected to the metal shell (1).

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