Gas pipeline connecting structure, hydrogen storage system and vehicle
By designing the gas pipeline connection structure of the spherical buffer chamber and the flow guide, the problem of excessive temperature rise during the gas filling process is solved, the gas flow rate and temperature are effectively reduced, and the hydrogenation safety and durability of the structure are improved. sex.
Patent Information
- Application Number
- CN202421328403.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-06-12
AI Technical Summary
In the prior art, the temperature rises too fast due to the high gas flow rate during gas filling, which affects the safety of hydrogenation.
A gas pipeline connection structure is designed, including a spherical buffer cavity in the main body and a connecting section extending axially in the main body, and the gas flow rate is buffered through the buffer cavity, and the vortex is formed through the arrangement of the flow tube and the angle α. Reduce the gas temperature.
It effectively reduces the gas flow rate and temperature, improves the safety of the gas filling process, and improves the durability and heat dissipation effect of the gas pipeline connection structure.
Smart Images
Figure CN222513797U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicles, and in particular to a gas pipeline connection structure; at the same time, the utility model also relates to a hydrogen storage system provided with the gas pipeline connection structure, and a vehicle provided with the hydrogen storage system. Background Art
[0002] Hydrogen fuel cell vehicles are vehicles powered by hydrogen energy, which has the advantages of high efficiency conversion, environmental friendliness, and energy sustainability. Hydrogen, as an important raw material for hydrogen fuel cell vehicles, is usually stored in a hydrogen storage device (such as a hydrogen storage tank) in a hydrogen storage system. The hydrogen storage device is connected to the hydrogen filling port through a hydrogen filling pipeline. The hydrogen in the hydrogen filling station is filled into the hydrogen filling port through a hydrogen filling gun and stored in the hydrogen storage device to meet the use needs of hydrogen fuel cell vehicles.
[0003] However, the connection structure between the hydrogenation pipeline and the hydrogenation port in the prior art has the problem of poor use effect, especially during hydrogenation, due to the high flow rate of hydrogen at the hydrogenation port, temperature rise is prone to occur, thus affecting the safety of hydrogenation. In addition, in addition to hydrogen, the connection structure for other gas filling also has the same problem. Therefore, it is particularly important to optimize the connection structure used on the gas filling pipeline to improve the safety of use during the gas filling process. Utility Model Content
[0004] In view of this, the utility model aims to propose a gas pipeline connection structure to buffer the gas flow rate and reduce the safety risks caused by excessively high gas flow rate and excessive temperature rise.
[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:
[0006] A gas pipeline connection structure comprises a main body and connection sections arranged on two opposite sides of the main body;
[0007] A buffer cavity is formed in the main body, each of the connecting sections is provided with a channel and a connecting portion, each of the channels passes through the corresponding connecting section and is communicated with the buffer cavity, and each of the connecting portions is used for connecting with a gas pipeline.
[0008] Furthermore, the main body is spherical, and the buffer cavity is a spherical cavity.
[0009] Furthermore, the connecting sections on both sides extend in opposite directions along the same axial direction of the main body;
[0010] The channels of the connecting sections on both sides extend along the axial direction of the main body.
[0011] Furthermore, the main body is provided with a guide tube located in the buffer cavity, one end of the guide tube is connected to the channel of the connecting section on one side; an angle α is formed between the pipe opening direction of the other end of the guide tube and the extension direction of the channel.
[0012] Furthermore, the angle α is between 30° and 60°.
[0013] Furthermore, the connecting portion includes an external thread provided on the connecting section.
[0014] Furthermore, a sealing surface is provided at the free end of each channel, and the sealing surface is a conical surface matched with the ball head of the gas pipeline; the connecting section can be connected to the ball head through a nut threaded with the external thread, and one end of the nut has a limiting ring abutting against the ball head.
[0015] Furthermore, the main body and each connecting section are made of stainless steel.
[0016] Compared with the prior art, the utility model has the following advantages:
[0017] The gas pipeline connection structure described in the utility model forms a buffer cavity in the main body. During the gas filling process, the flow rate of the gas can be buffered by the buffer cavity in the gas pipeline connection structure, which can effectively reduce the flow rate of the gas, thereby helping to avoid the safety risks caused by the increase in the temperature of the gas (such as hydrogen) due to excessively fast flow rate during the gas filling process, thereby helping to improve the safety of the use of the gas pipeline connection structure.
[0018] In addition, the main body is spherical, and the buffer cavity is a spherical cavity, which is conducive to improving the pressure resistance and heat dissipation effect of the main body. Compared with the main body and the buffer cavity being cylindrical or rectangular, it is also conducive to avoiding the problem of high-pressure damage caused by stress concentration in the buffer cavity, thereby having better durability. The connecting sections on both sides extend in opposite directions along the same axial direction of the main body, and the channels on both sides extend along the axial direction of the main body, which is conducive to improving the smoothness of gas flow and the efficiency of gas filling, and is easy to arrange and implement. A guide tube with one end connected to one side channel is arranged in the buffer cavity, and the direction of the nozzle at the other end of the guide tube has an angle with the extension direction of the channel, which is conducive to avoiding direct blowing when the airflow flows through, and is conducive to the formation of vortices, thereby effectively reducing the safety risks caused by excessive gas flow rate and temperature increase.
[0019] In addition, the setting of the angle α range is conducive to ensuring the speed reduction and temperature reduction effect of the airflow in the buffer chamber. The structure of the external thread is simple, easy to arrange and implement, and the connection operation is convenient. By setting the sealing surface of the free end of the channel as a conical surface, it is conducive to improving the sealing effect of the ball head on the channel and the gas pipeline, and by using a nut with a limit ring to connect the connecting section and the ball head together, it has the advantages of easy operation and good connection effect. The main body and each connecting section are made of stainless steel, which can effectively avoid hydrogen embrittlement damage during hydrogen filling.
[0020] In addition, another object of the present invention is to provide a hydrogen storage system, including a hydrogen storage device, a hydrogenation pipeline connected to the hydrogen storage device, and the above-mentioned gas pipeline connection structure arranged on the hydrogenation pipeline.
[0021] The hydrogen storage system of the utility model is beneficial to reducing the flow rate and temperature of hydrogen at the hydrogenation port by arranging the gas pipeline connection structure as described above on the hydrogenation pipeline, thereby facilitating improving the safety of the hydrogen storage system.
[0022] In addition, the utility model also relates to a vehicle, which is provided with the hydrogen storage system as described above.
[0023] The vehicle described in the utility model can improve the safety during hydrogen refueling by providing the hydrogen storage system as described above. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:
[0025] Figure 1 This is a schematic diagram of the structure of the gas pipeline connection structure according to an embodiment of the utility model;
[0026] Figure 2 for Figure 1 A front view of
[0027] Figure 3 for Figure 2 AA direction section view;
[0028] Figure 4 This is a structural schematic diagram of the ball head and gas pipeline connection structure in a connected state according to an embodiment of the utility model;
[0029] Figure 5 This is a schematic diagram of the structure of the gas pipeline connection structure on the gas pipeline according to an embodiment of the utility model;
[0030] Figure 6This is a schematic diagram of the structure of the gas pipeline described in an embodiment of the utility model.
[0031] Description of reference numerals:
[0032] 1. Main body; 2. Connecting section; 3. Flow guide tube; 4. Gas pipeline; 5. Nut; 6. Ball head;
[0033] 100. Buffer cavity;
[0034] 201, large diameter portion; 202, small diameter portion; 203, second channel; 204, first channel; 205, sealing surface;
[0035] 301, Part I; 302, Part II;
[0036] 401, first pipeline; 402, second pipeline; 403, hydrogenation port;
[0037] 501, limit ring;
[0038] 600, airway; 601, bump; 602, second cone surface. DETAILED DESCRIPTION
[0039] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0040] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0041] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.
[0042] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.
[0043] The present embodiment relates to a gas pipeline connection structure to solve the problem in the prior art that the temperature rise during the gas filling process easily causes safety risks, thereby improving the safety of the gas filling process.
[0044] In terms of overall structure, the gas pipeline connection structure includes a main body 1 and connecting sections 2 arranged on two opposite sides of the main body 1. A buffer cavity 100 is formed in the main body 1, and each connecting section 2 is provided with a channel and a connecting portion, each channel passes through the corresponding connecting section 2 and communicates with the buffer cavity 100, and each connecting portion is used to connect with the gas pipeline 4.
[0045] The gas pipeline connection structure described in the utility model forms a buffer chamber 100 in the main body 1. During the process of using the connection structure to fill the gas, the flow rate of the gas can be buffered by the buffer chamber 100, which can effectively reduce the flow rate of the gas, thereby helping to avoid the safety risks caused by the increase in gas temperature due to excessively fast flow rate, and further helping to improve the safety of the gas pipeline connection structure.
[0046] An exemplary structure of the gas pipeline connection structure in this embodiment is as follows Figures 1 to 3 As shown in the figure, the structure of the gas pipeline connection structure in use is as follows Figure 5 As shown in . The gas in this embodiment may be hydrogen, for example. In this case, the gas pipeline 4 is specifically a hydrogenation pipeline, and the gas pipeline connection structure is arranged close to the hydrogenation port 403 of the hydrogenation pipeline. The hydrogen injected into the hydrogenation port 403 is specifically cooled by the gas pipeline connection structure, and then hydrogen is added to the hydrogen storage device through the hydrogenation pipeline to complete the hydrogen filling. Of course, the gas pipeline connection structure can also be applied to other gas filling pipelines as long as the use requirements are met.
[0047] As a preferred embodiment, the main body 1 in this embodiment is spherical, and the buffer cavity 100 is a spherical cavity, which is beneficial to improving the pressure resistance and heat dissipation effect of the main body 1. Under 70Mpa high-pressure hydrogen, compared with the main body 1 and the buffer cavity 100 being cylindrical or rectangular, it is beneficial to avoid the problem of high-pressure damage caused by stress concentration in the buffer cavity 100, thereby having better durability.
[0048] It should be noted that the cross-sectional area of the buffer cavity 100 is larger than the cross-sectional area of each channel to ensure the buffering and deceleration effect of the buffer cavity 100. In addition, the main body 1 and the buffer cavity 100 can also be set to other shapes besides spherical, but in this case, it is still necessary to ensure that the cross-sectional area of the buffer cavity 100 is larger than the cross-sectional area of each channel.
[0049] As a preferred arrangement, Figures 1 to 3As shown in , the connecting sections 2 on both sides extend in opposite directions along the same axial direction of the main body 1, and the channels of the connecting sections 2 on both sides extend along the axial direction of the main body 1. That is to say, the two connecting sections 2 are arranged relative to each other, and the axes of the two are arranged collinearly. Such an arrangement is conducive to improving the smoothness of gas flow and the efficiency of gas filling, and is convenient for arrangement and implementation. The hydrogen in the external hydrogen storage device first flows into one channel thereof after passing through the hydrogen filling port 403 of the vehicle, and then flows into the buffer chamber 100 for buffering and deceleration, and then flows into the hydrogen storage device through another channel. It should be noted that in this embodiment, the positional relationship between the two connecting sections 2 can also be adjusted according to usage requirements. For example, an angle is formed between the axes of the two connecting sections 2, and the value of the angle can be taken as long as it meets the usage requirements.
[0050] In order to further improve the use effect of the buffer chamber 100, as a preferred embodiment, Figure 3 As shown in , a flow guide tube 3 is provided on the main body 1 and is located in the buffer cavity 100. One end of the flow guide tube 3 is connected to the channel of the one side connecting section 2, and an angle α is formed between the pipe opening direction of the other end of the flow guide tube 3 and the extending direction of the channel. To facilitate the description of the structure of the flow guide tube 3, the channel connected to the flow guide tube 3 is referred to as the first channel 204, and the other channel is referred to as the second channel 203.
[0051] One end of the flow guide tube 3 is connected to the first channel 204, and the angle between the direction of the pipe opening at the other end and the extension direction of the first channel 204 is α. Such a setting is conducive to avoiding the straight blowing of the gas (such as hydrogen) when it flows through, thereby facilitating the formation of vortex, and can effectively reduce the safety risk caused by the high flow rate and temperature rise of the gas (such as hydrogen).
[0052] For detailed structure, please refer to Figure 3 As shown in the figure, the flow guide tube 3 has a first portion 301 connected to the outlet of the first channel 204 and extending into the buffer cavity 100 along the extension direction of the first channel 204, and a second portion 302 connected to the first portion 301 and inclined relative to the first portion 301. The outlet of the flow guide tube 3 is located at the free end of the second portion 302 and is arranged toward the inner wall of the buffer cavity 100. The above-mentioned pipe opening direction refers to the outlet direction of the flow guide tube 3, that is, the axial direction of the second portion 302.
[0053] Among them, the hydrogen flowing into the first channel 204 is directly blown toward the inner wall of the buffer cavity 100 after flowing through the guide tube 3, and forms a vortex in the buffer cavity 100, which is beneficial to reduce the flow rate of the hydrogen and prolong the residence time of the hydrogen in the buffer cavity 100, thereby improving the heat dissipation effect of the hydrogen and preventing the hydrogen temperature from rising too high, and then flowing into the hydrogen storage device on the vehicle.
[0054] like Figure 3As shown in , the angle α in this embodiment specifically refers to the angle between the axis of the second part 302 and the extension direction of the first channel 204, that is, the angle between the axis of the second part 302 and the axis of the main body 1. As a preferred embodiment, the angle α is between 30°-60°. For example, the angle α can be 30°, 35°, 40°, 45°, 50°, 55° or 60°, etc., which is conducive to ensuring the speed reduction and temperature reduction effect of the airflow in the buffer cavity 100, and at the same time, the impact of hydrogen on the buffer cavity 100 is small, which is conducive to ensuring the durability of the main body 1.
[0055] When the angle α is less than 30°, the vortex formed by the hydrogen in the buffer cavity 100 is small, and it is easier to flow into the second channel 203, but the problem of hydrogen temperature rise is not solved obviously. When α is greater than 60°, the impact on the inner wall of the buffer cavity 100 is large, and the noise is obvious, so the effect is not ideal.
[0056] In specific implementation, the main body 1 and each connecting section 2 are made of stainless steel. For example, 316L stainless steel in the prior art is used, which can effectively avoid hydrogen embrittlement damage during hydrogen filling (hydrogen embrittlement is a phenomenon in metal materials, specifically manifested as hydrogen dissolved in steel polymerizing into hydrogen molecules, causing stress concentration, thereby forming fine cracks inside the steel. Once hydrogen embrittlement occurs, it cannot be eliminated), thereby helping to extend the service life of the gas pipeline connection structure. At the same time, the main body 1 made of stainless steel also has good heat dissipation performance, which is further conducive to solving the problem of rapid temperature rise of hydrogen gas.
[0057] It is understandable that the main body 1 and each connecting section 2 are made of stainless steel, and other metal materials can also be used. In addition, the main body 1, the guide tube 3 and the two connecting sections 2 are preferably formed in one piece, which is conducive to improving the processing and assembly efficiency. Of course, the main body 1, the guide tube 3 and the two connecting sections 2 can also be processed separately according to the processing requirements, and then connected with other parts.
[0058] As a feasible implementation method, Figures 1 to 3 As shown in , the connection portion includes an external thread provided on the connection section 2. The structure of the external thread is simple, and it is easy to arrange and implement on the connection section 2, which is conducive to reducing production costs and convenient for connection operation. Of course, the connection portion can also adopt other structural forms besides the external thread, as long as the connection requirements are met.
[0059] Specifically, the connecting section 2 of this embodiment includes a large diameter portion 201 connected to the main body 1, and a small diameter portion 202 connected to the large diameter portion 201, and the cross-sectional area of the large diameter portion 201 is larger than the cross-sectional area of the small diameter portion 202. The external thread of this embodiment is specifically provided on the small diameter portion 202. The structure of the external thread is simple, and it is convenient to arrange and implement on the connecting section 2, which is not only conducive to reducing production costs, but also convenient for connection operation. Of course, the connecting portion can also adopt other structural forms other than the external thread, as long as the connection requirements are met.
[0060] The cross-sectional area of the large diameter portion 201 is larger than the cross-sectional area of the connection portion, which is not only conducive to improving the connection strength between the connection section 2 and the main body 1, but also can abut against the nut 5 described below, thereby improving the installation effect of the nut 5. In addition, in order to facilitate the rotation of the main body 1 and achieve the connection, the cross-sectional area of the large diameter portion 201 is polygonal.
[0061] To facilitate understanding of this embodiment, the following description will be made using the gas pipeline 4 as a hydrogenation pipeline of a vehicle. To improve the installation effect of the gas pipeline connection structure on the gas pipeline 4, as shown in FIG. Figure 3 and Figure 4 As shown in , the free end of each channel is provided with a sealing surface 205, and the sealing surface 205 is a conical surface provided to match the ball head 6 of the gas pipeline 4. In order to distinguish it from the conical surface on the ball head 6 mentioned below, the conical surface corresponding to the sealing surface 205 is referred to as the first conical surface, and the conical surface on the ball head 6 is referred to as the second conical surface 602. The connecting section 2 can be connected to the ball head 6 through a nut 5 screwed with an external thread, and one end of the nut 5 has a limit ring 501 abutting against the ball head 6.
[0062] Here, the sealing surface 205 is a first conical surface. The settings of the nut 5 and the limit ring 501 are beneficial to improving the sealing effect of the ball head 6 on the channel and the gas pipeline 4. The nut 5 connects the connecting section 2 and the ball head 6 together, which has the advantages of convenient operation and good connection effect. The setting of the limit ring 501 on the nut 5 is beneficial to further improve the sealing effect between the sealing surface 205 and the ball head 6, so that the two ends of the gas pipeline connecting structure are installed on the gas pipeline 4 and as a part of the gas pipeline 4, the hydrogen in the gas pipeline 4 flows through the gas pipeline connecting structure for buffering and cooling.
[0063] The ball head 6 is a product in the prior art, for example, it can be a metal ball head for pipe connection produced by Shanghai Usui Engine Parts Co., Ltd. Figure 5 and Figure 6As shown in the figure, the gas pipeline 4 has a first pipeline 401 and a second pipeline 402 which are disconnected, wherein the first pipeline 401 is connected downstream of the second channel 203, the second pipeline 402 is connected upstream of the first channel 204, and a hydrogenation port 403 is installed at the gas inlet of the second pipeline 402.
[0064] The gas inlet end of the first pipeline 401 and the gas outlet end of the second pipeline 402 are both provided with the above-mentioned ball heads 6, and the two ends of the gas pipeline connection structure are respectively connected to the corresponding ball heads 6 and installed on the gas pipeline 4. The flow path of hydrogen in the external hydrogen storage device (specifically, the hydrogen storage device of the hydrogen filling station) is as follows: Figure 5 As shown by the arrow in the figure, hydrogen can flow through the hydrogenation port 403, sequentially through the second pipeline 402, the first channel 204, the buffer chamber 100 and the second channel 203, and then flow into the first pipeline 401, and then flow into the hydrogen storage device of the vehicle.
[0065] like Figure 4 As shown in FIG. 1 , the ball head 6 in this embodiment has an air passage 600 connected to the corresponding channel, and the outlet end of the ball head 6 has a radially outwardly convex block 601, and the end surface of the block 601 facing the channel is a second conical surface 602. The sealing surface 205 and the second conical surface 602 on the block 601 are in abutment with each other to achieve communication between the air passage 600 in the ball head 6 and the corresponding channel.
[0066] In this embodiment, the nut 5 is sleeved outside the protrusion 601 of the ball head 6, and the limiting ring 501 is located at one end of the nut 5 and is blocked on the side of the protrusion away from the sealing surface 205. With the threaded connection of each nut 5 and the external thread on the corresponding connecting section 2, the protrusion 601 can be pressed against the corresponding connecting section 2 through the limiting ring 501, so that the sealing surface 205 and the second cone surface 602 on the corresponding ball head 6 are tightly sealed, thereby completing the installation of the gas pipeline connection structure on the gas pipeline 4, and then facilitating the filling of hydrogen. In addition, the cooperation between the ball head 6 and the corresponding connecting section 2 is also conducive to ensuring the sealing performance of the channel and the pipeline, and the use of two-way can be reduced at the position where the pipeline needs to be disconnected, thereby helping to reduce production costs.
[0067] Taking into account that some vehicles will generate high-frequency noise during hydrogen refueling, the size of the buffer chamber 100 can be optimized through noise analysis simulation calculations, so that the buffer chamber 100 can act as a resonant chamber, thereby silencing the noise generated during hydrogen refueling, so that the buffer chamber 100 can also play a role in noise reduction, thereby helping to improve the comfort of the vehicle.
[0068] The gas pipeline connection structure of this embodiment is arranged on the gas pipeline 4 and is arranged close to the hydrogen filling port 403, which is not only conducive to reducing the temperature during hydrogen filling, but also can reduce the noise generated during hydrogen filling, thereby improving the safety and comfort during hydrogen filling.
[0069] In addition, the present embodiment relates to a hydrogen storage system, including a hydrogen storage device, a hydrogenation pipeline connected to the hydrogen storage device, and the gas pipeline connection structure as described above provided on the hydrogenation pipeline.
[0070] The installation method of the gas pipeline connection structure on the hydrogenation pipeline is the same as the installation method on the above-mentioned gas pipeline 4, and both are connected to the hydrogenation pipeline through the ball head 6.
[0071] The hydrogen storage system described in this embodiment, by providing the above-mentioned gas pipeline connection structure on the hydrogenation pipeline, allows the hydrogen to be buffered and cooled in the buffer chamber 100, so that the temperature of the hydrogen flowing into the hydrogen storage device of the vehicle is within a safe range, thereby facilitating the safety of the use of the hydrogen storage system.
[0072] In addition, the present embodiment also relates to a vehicle, which is provided with the hydrogen storage system as described above.
[0073] The vehicle of this embodiment can improve safety during hydrogen refueling by providing the above-mentioned hydrogen storage system.
[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A gas pipeline connection structure, characterized in that: It comprises a main body (1), and connecting sections (2) arranged on two opposite sides of the main body (1); A buffer cavity (100) is formed in the main body (1), and each of the connecting sections (2) is provided with a channel and a connecting portion, each of the channels passes through the corresponding connecting section (2) and is in communication with the buffer cavity (100), and each of the connecting portions is used for connecting to a gas pipeline (4).
2. The gas pipeline connection structure according to claim 1, characterized in that: The main body (1) is spherical, and the buffer cavity (100) is a spherical cavity.
3. The gas pipeline connection structure according to claim 2, characterized in that: The connecting sections (2) on both sides extend in opposite directions along the same axial direction of the main body (1); The channels of the connecting sections (2) on both sides extend along the axial direction of the main body (1).
4. The gas pipeline connection structure according to claim 3, characterized in that: The main body (1) is provided with a flow guide tube (3) located in the buffer cavity (100), and one end of the flow guide tube (3) is connected to the channel of the connecting section (2) on one side; There is an angle α between the direction of the pipe opening at the other end of the flow guide pipe (3) and the extension direction of the channel.
5. The gas pipeline connection structure according to claim 4, characterized in that: The angle α is between 30° and 60°.
6. The gas pipeline connection structure according to claim 1, characterized in that: The connecting portion comprises an external thread provided on the connecting section (2).
7. The gas pipeline connection structure according to claim 6, characterized in that: A sealing surface (205) is provided at the free end of each channel, and the sealing surface (205) is a conical surface matched with the ball head (6) of the gas pipeline (4); The connecting section (2) can be connected to the ball head (6) via a nut (5) threadedly connected to the external thread, and one end of the nut (5) has a limiting ring (501) abutting against the ball head (6).
8. The gas pipeline connection structure according to any one of claims 1 to 7, characterized in that: The main body (1) and each of the connecting sections (2) are made of stainless steel.
9. A hydrogen storage system, characterized in that: It comprises a hydrogen storage device, a hydrogenation pipeline connected to the hydrogen storage device, and a gas pipeline connection structure according to any one of claims 1 to 8 arranged on the hydrogenation pipeline.
10. A vehicle, characterized in that: The vehicle is provided with the hydrogen storage system according to claim 9.