Side liquefied natural gas cylinder body for automobile

Abstract

The invention relates to the field of automobile parts, and discloses an automobile side liquefied natural gas cylinder body which comprises an inner container assembly, a steel plate is arranged on the outer wall of the inner container assembly, an outer rear seal head is arranged at one end of the steel plate, an outer front seal head is arranged at the other end of the steel plate, and a protective cover is arranged at the top of the outer rear seal head. A protection cover mounting ring is arranged at the bottom of the outer front end socket, nylon screws are arranged on one side of the protection cover mounting ring, a vacuumizing opening protection cover is mounted on the side, away from the outer front end socket, of the protection cover mounting ring through the nylon screws, and a vacuumizing opening assembly is arranged on one side of the bottom of the outer front end socket. Through the arrangement of the connecting structure, the inner container assembly can be conveniently connected with an external system, the connecting structure is externally protected through the protective cover, the connecting position of the connecting structure and the inner container assembly is protected through the outer rear sealing head, and therefore the effects of conveniently connecting the external system and improving the connecting safety and reliability are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts, in particular to a side-mounted liquefied natural gas cylinder body for an automobile. Background Art

[0002] Auto parts are a vital component of the automotive industry, covering a wide range of components and related technologies that support the normal operation and function realization of automobiles; it includes engines, transmissions, chassis systems, body parts, electrical equipment and many other aspects; engine parts such as pistons and crankshafts ensure power output; transmission-related parts are responsible for switching between different speeds; chassis parts such as suspension, braking, steering and other parts are related to the car's handling and driving stability; body parts include doors, windows, frames, etc., which determine the structural strength and appearance of the car body; electrical equipment includes batteries, generators, various sensors, etc., which meet the car's electricity needs and realize intelligent control; it involves a series of complex processes from raw material processing to precision manufacturing, which must not only meet the needs of improving vehicle performance, but also meet strict quality and safety standards.

[0003] As the automotive industry's demand for clean energy continues to increase, liquefied natural gas, as a clean and efficient energy source, is increasingly used in the automotive field. However, the storage and transportation of liquefied natural gas places strict requirements on the performance of gas cylinders. During driving, gas cylinders face complex road conditions, including mechanical stresses such as bumps, vibrations, and collisions. They may also be affected by external temperature changes, humidity changes, and various chemical substances.

[0004] Traditional side-mounted liquefied natural gas cylinders for automobiles are directly connected to various valves through the bottle body, which lacks corresponding protection. The connecting parts are easily damaged or fail due to environmental factors, thus affecting the normal use and safety performance of the cylinder. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a side-mounted liquefied natural gas cylinder body for automobiles, which solves the problem that traditional side-mounted liquefied natural gas cylinder bodies for automobiles are directly connected to various valves through the bottle body, lack corresponding protection, and the connecting parts are easily damaged or fail due to environmental factors, thereby affecting the normal use and safety performance of the cylinder.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a side-mounted liquefied natural gas cylinder body for automobiles, comprising an inner liner assembly, an outer wall of the inner liner assembly is provided with a steel plate, one end of the steel plate is provided with an outer rear head, the other end of the steel plate is provided with an outer front head, the top of the outer rear head is provided with a protective cover, the bottom of the outer front head is provided with a protective cover mounting ring, one side of the protective cover mounting ring is provided with a nylon screw, a side of the protective cover mounting ring away from the outer front head is provided with a draw-out protective cover through a nylon screw, a bottom side of the outer front head is provided with a vacuum port assembly, the vacuum port assembly is located inside the protective cover mounting ring and the draw-out protective cover, an isolation structure is provided between the inner liner assembly and the steel plate, and a connecting structure is provided on the top of the inner liner assembly.

[0007] Preferably, the isolation structure comprises flame-retardant glass fiber paper, one side of the flame-retardant glass fiber paper is arranged on the outer wall of the liner assembly, and the other side of the flame-retardant glass fiber paper is arranged with aluminum foil.

[0008] Preferably, the aluminum foil is arranged on the inner wall of the steel plate at a side away from the flame-retardant glass fiber paper.

[0009] Preferably, a palladium oxide package is provided on a side of the outer front head away from the protective cover mounting ring.

[0010] Preferably, the connection structure comprises a connection pipe, the bottom of which is arranged on the top of the inner tank assembly, and the top of which passes through the top of the outer rear head and is fixedly connected with a threaded connecting pipe.

[0011] Preferably, a vent valve assembly is installed on the side of the connecting pipe away from the threaded connecting pipe, a first stop valve is installed on one side of the connecting pipe, and a main safety valve connector is provided on the other side of the connecting pipe.

[0012] Preferably, the threaded connecting pipe, the first stop valve, the main safety valve connecting piece, and the vent valve assembly are all located inside the protective cover.

[0013] Preferably, a second stop valve is installed on one side of the top of the inner tank assembly, and the top of the second stop valve passes through the top of the outer rear head and is located inside the protective cover.

[0014] Working principle: The inner tank assembly is used as the core part for storing liquefied natural gas. The steel plate set on its outer wall provides a solid external support for the entire bottle body, effectively resisting various external force impacts that may be suffered during the driving of the car. The outer rear head and the outer front head are respectively set at both ends of the steel plate and are tightly combined with the steel plate to ensure the sealing of the bottle body. The protective cover set on the top of the outer rear head and the protective cover mounting ring and the draw-out protective cover at the bottom of the outer front head provide additional protection for the key parts of the bottle body. Flame-retardant glass fiber paper and aluminum foil are set on the outer wall of the inner tank assembly in sequence to form A good heat insulation and moisture-proof layer is formed. A threaded pipe, a first stop valve, a main safety valve connector and a vent valve assembly are arranged on the connecting pipe, and these components are placed in a protective cover. The bottom of the connecting pipe is connected to the top of the inner tank assembly, and the top passes through the outer rear head and is fixedly connected to the threaded pipe. Through this connection method, the connection between the inner tank and the external system is realized, and the protective cover is used to prevent external objects from colliding with these key components. At the same time, it also reduces the influence of external factors such as dust and water vapor on them. During the driving of the car, the protective cover can ensure the stability and reliability of the connection structure and ensure the normal use of the gas cylinder.

[0015] The present invention provides a side-mounted liquefied natural gas cylinder body for a vehicle, which has the following beneficial effects: 1. The present invention facilitates the connection between the inner tank assembly and the external system by setting a connecting structure, and provides external protection for the connecting structure through a protective cover, and protects the connection between the connecting structure and the inner tank assembly through an external rear head, so as to facilitate the connection with the external system and improve the safety and reliability of the connection, thereby solving the problem that the traditional side-mounted liquefied natural gas cylinder for automobiles is directly connected to each valve through the bottle body, lacks corresponding protection, and the connecting parts are easily damaged or fail due to environmental factors, thereby affecting the normal use and safety performance of the cylinder.

[0016] 2. The present invention forms a good heat-insulating and moisture-proof layer by sequentially arranging flame-retardant glass fiber paper and aluminum foil on the outer wall of the inner liner assembly. The flame-retardant glass fiber paper can effectively prevent external heat from being transferred to the inner liner assembly, and in the event of an accident such as a fire, it can slow down the spread of the flame, thereby buying time for rescue and emergency treatment. The arrangement of the aluminum foil further enhances the heat-insulating effect, and at the same time, the aluminum foil effectively blocks the intrusion of external water vapor, thereby ensuring the storage quality and safety of liquefied natural gas, thereby solving the problem that the storage quality of liquefied natural gas is affected by external temperature and humidity.

[0017] 3. The present invention provides multi-layer protection for the gas cylinder by arranging a steel plate on the outer wall of the inner liner assembly, a protective cover on the top of the outer rear head, and a protective cover mounting ring and a draw-out protective cover on the bottom of the outer front head, thereby achieving the effect of enhancing the impact and wear resistance of the gas cylinder, thereby solving the problem that the gas cylinder is easily damaged due to complex road conditions during the driving of the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the internal structure of the protective cover of the present invention; Figure 2 for Figure 1 A is an enlarged schematic diagram; Figure 3 It is a schematic diagram of the partial structure of the outer rear head of the present invention; Figure 4 It is a schematic diagram of the local structure of the outer front head of the present invention.

[0019] Among them, 1. protective cover; 2. outer rear head; 3. steel plate; 4. liner assembly; 5. aluminum foil; 6. flame-retardant glass fiber paper; 7. outer front head; 8. suction port protective cover; 9. nylon screws; 10. vacuum port assembly; 11. protective cover mounting ring; 12. palladium oxide bag; 13. threaded pipe; 14. first stop valve; 15. main safety valve connector; 16. vent valve assembly; 17. second stop valve; 18. connecting pipe. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example: Please refer to the attached Figure 1 -Attached Figure 4The embodiment of the present invention provides a side-mounted liquefied natural gas cylinder body for an automobile, including an inner liner assembly 4, an outer wall of the inner liner assembly 4 is provided with a steel plate 3, one end of the steel plate 3 is provided with an outer rear head 2, the other end of the steel plate 3 is provided with an outer front head 7, a protective cover 1 is provided on the top of the outer rear head 2, a protective cover mounting ring 11 is provided on the bottom of the outer front head 7, a nylon screw 9 is provided on one side of the protective cover mounting ring 11, and a draw-out protective cover is installed on the side of the protective cover mounting ring 11 away from the outer front head 7 through the nylon screw 9. Cover 8, a vacuum port assembly 10 is provided on one side of the bottom of the outer front head 7, and the vacuum port assembly 10 is located inside the protective cover mounting ring 11 and the vacuum port protective cover 8, an isolation structure is provided between the liner assembly 4 and the steel plate 3, and a connecting structure is provided on the top of the liner assembly 4; a palladium oxide bag 12 is provided on the side of the outer front head 7 away from the protective cover mounting ring 11; a second stop valve 17 is installed on one side of the top of the liner assembly 4, and the top of the second stop valve 17 passes through the top of the outer rear head 2 and is located inside the protective cover 1.

[0022] Specifically, the inner tank assembly 4 is used as the core part for storing liquefied natural gas, and the steel plate 3 arranged on the outer wall thereof provides a solid external support for the entire bottle body, which can effectively resist various external force impacts that may be suffered during the driving of the vehicle. The outer rear head 2 and the outer front head 7 are respectively arranged at both ends of the steel plate 3 and are tightly combined with the steel plate 3 to ensure the sealing of the bottle body. The protective cover 1 arranged on the top of the outer rear head 2 and the protective cover mounting ring 11 and the extraction port protective cover 8 at the bottom of the outer front head 7 provide additional protection for the key parts of the bottle body, and facilitate the vacuum operation; By setting the palladium oxide bag 12, the palladium oxide has special chemical properties and can absorb some chemical substances that may threaten the safety of the gas cylinder. During the driving of the car, a trace amount of impurities such as hydrogen may enter the environment around the gas cylinder. If these impurities are mixed with liquefied natural gas, dangerous chemical reactions may be triggered. The palladium oxide bag 12 can absorb these impurities, thereby reducing the risk of dangerous chemical reactions. In an emergency, the second stop valve 17 installed on one side of the top of the liner component 4 can be used as a backup cut-off device, further improving the safety of the gas cylinder, and the top of the second stop valve 17 passes through the outer rear head 2 and is located inside the protective cover 1, and is protected together with other connecting parts; By setting up the isolation structure, a good heat insulation and moisture-proof layer is formed, which achieves the effect of reducing the external heat transfer to the inner tank and preventing water vapor from entering the inner tank. By setting up the connection structure, it is convenient to connect the inner tank component 4 with the external system, and it is externally protected by the protective cover 1, and the connection between it and the inner tank component 4 is protected by the outer rear head 2, so as to facilitate the connection with the external system and improve the safety and reliability of the connection, thereby solving the problem that the traditional side-mounted liquefied natural gas cylinder body for automobiles is directly connected to each valve through the bottle body, it lacks corresponding protection, and the connecting parts are easily damaged or fail due to environmental factors, thereby affecting the normal use and safety performance of the cylinder.

[0023] Please see attached Figure 1 -Attached Figure 4 The isolation structure includes a flame-retardant glass fiber paper 6, one side of which is arranged on the outer wall of the inner liner assembly 4, and the other side of the flame-retardant glass fiber paper 6 is arranged with an aluminum foil 5; the side of the aluminum foil 5 away from the flame-retardant glass fiber paper 6 is arranged on the inner wall of the steel plate 3.

[0024] Specifically, by sequentially arranging flame-retardant glass fiber paper 6 and aluminum foil 5 on the outer wall of the inner liner component 4, a good heat-insulating and moisture-proof layer is formed. The flame-retardant glass fiber paper 6 has excellent heat-insulating and flame-retardant properties. On the one hand, it can effectively prevent external heat from being transferred to the inner liner component 4, and keep the low temperature state of liquefied natural gas. Because liquefied natural gas needs to be stored at an extremely low temperature, if too much external heat is transferred to the inner liner, it will cause the liquefied natural gas to heat up and gasify, which will not only affect the storage efficiency, but also increase the pressure in the bottle, bringing safety hazards. On the other hand, in the event of an accident such as a fire, the flame-retardant glass fiber paper 6 can delay the flame The spreading speed of the gas is reduced, and time is gained for rescue and emergency treatment. By arranging the aluminum foil 5 between the flame-retardant glass fiber paper 6 and the inner wall of the steel plate 3, the heat insulation effect is further enhanced. At the same time, the aluminum foil 5 also has good moisture-proof performance. Since the car is driven in different environments, it may encounter humid climates or high-humidity areas. If water vapor enters the inner tank and comes into contact with the liquefied natural gas, it may cause the quality of the liquefied natural gas to deteriorate or even trigger a chemical reaction. The aluminum foil 5 can effectively block the intrusion of external water vapor, ensure the storage quality and safety of the liquefied natural gas, and thus solve the problem that the storage quality of the liquefied natural gas is affected by the external temperature and humidity.

[0025] Please see attached Figure 1 -Attached Figure 4The connection structure includes a connecting pipe 18, the bottom of which is arranged at the top of the inner tank assembly 4, and the top of the connecting pipe 18 passes through the top of the outer rear head 2 and is fixedly connected with a threaded connecting pipe 13; a vent valve assembly 16 is installed on the side of the connecting pipe 18 away from the threaded connecting pipe 13, a first stop valve 14 is installed on one side of the connecting pipe 18, and a main safety valve connector 15 is arranged on the other side of the connecting pipe 18; the threaded connecting pipe 13, the first stop valve 14, the main safety valve connector 15, and the vent valve assembly 16 are all located inside the protective cover 1.

[0026] Specifically, a threaded pipe 13, a first stop valve 14, a main safety valve connector 15 and a vent valve assembly 16 are arranged on the connecting pipe 18, and these components are placed in the protective cover 1, and the bottom of the connecting pipe 18 is connected to the top of the inner tank assembly 4, and the top passes through the outer rear head 2 and is fixedly connected to the threaded pipe 13. Through this connection method, the connection between the inner tank and the external system is realized; By installing the vent valve assembly 16, the first stop valve 14, the main safety valve connector 15 and other components on the connecting pipe 18, the function of the vent valve assembly 16 is to safely discharge the gas in the bottle when needed. For example, when the gas cylinder needs to be repaired, tested or replaced, the liquefied natural gas in the bottle can be discharged to a safe place through the vent valve assembly 16 to avoid danger; the first stop valve 14 can control the flow of gas. When it is necessary to stop the gas supply or make an emergency cutoff, the operator can quickly close the first stop valve 14 to ensure safety; the main safety valve connector 15 is connected to the main safety valve. When the pressure in the bottle exceeds the safety limit, the main safety valve will automatically open to release excess pressure to prevent the bottle from exploding. These connecting components are all located inside the protective cover 1 and are additionally protected. The protective cover 1 can prevent external objects from colliding with these key components, and can also reduce the influence of external factors such as dust and water vapor on them. During the driving of the car, the protective cover 1 can ensure the stability and reliability of the connection structure and ensure the normal use of the gas cylinder, thereby facilitating the connection of the external system and improving the safety and reliability of the connection.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A side-mounted liquefied natural gas cylinder for an automobile, comprising an inner liner assembly (4), characterized in that: The outer wall of the inner liner assembly (4) is provided with a steel plate (3), one end of the steel plate (3) is provided with an outer rear head (2), the other end of the steel plate (3) is provided with an outer front head (7), the top of the outer rear head (2) is provided with a protective cover (1), the bottom of the outer front head (7) is provided with a protective cover mounting ring (11), one side of the protective cover mounting ring (11) is provided with a nylon screw (9), a side of the protective cover mounting ring (11) away from the outer front head (7) is installed with a suction port protective cover (8) through the nylon screw (9), a vacuum port assembly (10) is provided on one side of the bottom of the outer front head (7), the vacuum port assembly (10) is located inside the protective cover mounting ring (11) and the suction port protective cover (8), an isolation structure is provided between the inner liner assembly (4) and the steel plate (3), and a connection structure is provided on the top of the inner liner assembly (4).

2. The side-mounted liquefied natural gas cylinder for automobile according to claim 1, characterized in that: The isolation structure comprises flame-retardant glass fiber paper (6), one side of the flame-retardant glass fiber paper (6) is arranged on the outer wall of the inner liner component (4), and the other side of the flame-retardant glass fiber paper (6) is provided with aluminum foil (5).

3. The side-mounted liquefied natural gas cylinder for automobile according to claim 2, characterized in that: The side of the aluminum foil (5) away from the flame-retardant glass fiber paper (6) is arranged on the inner wall of the steel plate (3).

4. The side-mounted liquefied natural gas cylinder for automobile according to claim 1, characterized in that: A palladium oxide bag (12) is provided on a side of the outer front head (7) away from the protective cover mounting ring (11).

5. The side-mounted liquefied natural gas cylinder for automobile according to claim 1, characterized in that: The connection structure comprises a connection pipe (18), the bottom of the connection pipe (18) being arranged on the top of the inner tank assembly (4), and the top of the connection pipe (18) penetrating through the top of the outer rear end cap (2) and fixedly connected with a threaded connection pipe (13).

6. The side-mounted liquefied natural gas cylinder for automobile according to claim 5, characterized in that: A vent valve assembly (16) is installed on the side of the connecting pipe (18) away from the threaded connecting pipe (13), a first stop valve (14) is installed on one side of the connecting pipe (18), and a main safety valve connector (15) is provided on the other side of the connecting pipe (18).

7. The side-mounted liquefied natural gas cylinder for automobile according to claim 6, characterized in that: The threaded connecting pipe (13), the first stop valve (14), the main safety valve connecting piece (15), and the vent valve assembly (16) are all located inside the protective cover (1).

8. The side-mounted liquefied natural gas cylinder for automobile according to claim 1, characterized in that: A second stop valve (17) is installed on one side of the top of the inner tank assembly (4), and the top of the second stop valve (17) passes through the top of the outer rear head (2) and is located inside the protective cover (1).

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