LNG assembly structure and vehicle

Abstract

The invention belongs to the technical field of vehicles, and discloses an LNG assembly structure and a vehicle. The device comprises an LNG cylinder, a finned tube, a vaporizer, a first support and a second support, the first support is provided with a first supporting groove with an upward opening, the second support is provided with a second supporting groove with an upward opening, one end of the LNG cylinder is supported by the groove bottom wall of the first supporting groove, and the other end of the LNG cylinder is supported by the groove bottom wall of the second supporting groove; the finned tube is fixed to the side, in the axial direction of the LNG cylinder, of the first support, and the finned tube is installed below the LNG cylinder. A vaporizer is fixed on one side, in the axial direction of the LNG cylinder, of the first support, and a vaporizer is fixed on one side, in the axial direction of the LNG cylinder, of the second support; the problems that in the prior art, a vaporizer and a finned tube which are installed on a connecting beam between supporting feet are prone to being damaged in the vehicle running process, and the LNG assembly structure is low in reliability are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and particularly to an LNG assembly structure and a vehicle. Background Art

[0002] Driven by the "dual carbon" strategic goal, the clean energy transformation of commercial vehicles has become an important development direction in the transportation field of our country. Liquefied natural gas (LNG) has been widely used in commercial vehicle models such as heavy trucks and intercity buses due to its significant advantages of high calorific value and low emissions. As the core storage and transportation unit of the LNG fuel system, vehicle-mounted LNG cylinders usually adopt a double-layer vacuum insulation structure, with a working pressure range of 0.8 - 1.6 MPa and a storage temperature maintained at a cryogenic state of -162°C, which poses strict requirements on the structural stability and seismic performance of the vehicle-mounted installation system.

[0003] The current mainstream installation scheme generally adopts a four-point support structure: four groups of cast steel feet distributed in a rectangle at the bottom of the LNG cylinder, and the feet are connected by a connecting beam along the axis of the LNG cylinder to form a rigid support frame. This structure can meet the bearing standard of GB / T 20734-2006 "Installation Requirements for Vehicle-mounted Liquefied Natural Gas Cylinders" under static load conditions, but significant structural dynamics problems have emerged during actual operation. Specifically, the multi-directional composite loads generated during vehicle driving will have complex effects on the support system: First, the inertial load is generated by the self-weight of the LNG cylinder (typical value 800 - 1200 kg) during vehicle acceleration / braking; second, the random vibration load caused by road surface unevenness (the vibration frequency of grade E road surface defined by ISO 8608 standard can reach 15 - 25 Hz); third, the quasi-static load caused by the torsional deformation of the vehicle frame (according to the measured data, the maximum torsional deformation angle of a 6×4 tractor on a rolling road surface can reach 2.5°). The coupled action of these dynamic loads causes the LNG cylinder itself to twist around the axis of the LNG cylinder, and then the connecting beam on the lower side appears torsional bending.

[0004] Of particular concern is that in the prior art, a finned subcooling protection tube (used to prevent the vaporizer from icing) and a vaporizer (undertaking phase change heat transfer from -162°C to normal temperature) are directly and rigidly fixed to a connecting beam. This arrangement has two hidden dangers: on the one hand, as a thin-walled welded structure (with a wall thickness usually of 2-3 mm), the natural frequency of the finned tube (about 80-120 Hz) is prone to multiple frequency resonance with the torsional vibration frequency of the connecting beam (the measured value is 35-50 Hz), resulting in fatigue cracking of the weld seam; on the other hand, the existing finned tube and the vaporizer are parallel to the axis of the LNG cylinder in the length direction. When the LNG cylinder undergoes torsion, the two ends of the axis of the LNG cylinder rotate relative to each other, causing the connecting beam parallel to the axis of the LNG cylinder to twist. The connecting beam will cause the finned tube and the vaporizer to also twist and bend accordingly, resulting in damage to the finned tube and the vaporizer. Industry research data shows that for LNG vehicles with a traditional installation structure, the vaporizer seal assembly needs to be replaced on average every 50,000 kilometers, and the maintenance cost increases by 42% compared with diesel vehicle models.

[0005] In response to the above problems, the existing improvement solutions mainly focus on local structural strengthening: existing patents use thicker connecting beam webs (increasing from 8 mm to 12 mm) and adding diagonal bracing structures. Although the torsional stiffness can be increased by 21%, it leads to an 18% increase in the mass of the support system, which is contrary to the trend of vehicle lightweighting; or by adding rubber shock pads to try to isolate vibrations, but limited by the working temperature range (-40°C to +120°C) not matching the -162°C low-temperature environment of the LNG system, embrittlement failure occurs in actual use. The deeper contradiction is that the existing technologies have not established a collaborative design method for the dynamic characteristics of the support system and the protection of auxiliary equipment, resulting in the structural improvement falling into a vicious cycle of "strengthening - weight gain - re-strengthening", exposing the systematic defects of the traditional installation scheme in reliability design, which not only affects the vehicle operation economy, but also poses a potential threat to public safety.

[0006] From the analysis of the technical evolution path, the essence of the problem is that the existing design concept of the support system still stays in the static load-bearing stage and fails to fully consider the coupling effect of multiple physical fields unique to the LNG system, such as "low temperature - vibration - phase change", resulting in the existing improvement solutions failing to break through the technical bottleneck of "vibration conduction - structural damage - functional failure". Summary of the Invention

[0007] The purpose of the present invention is to provide an LNG assembly structure and a vehicle, which solve the problem that the vaporizer and the finned tube installed on the connecting beam between the feet are easily damaged during vehicle driving under the prior art, and the reliability of the LNG assembly structure is relatively low.

[0008] To achieve this purpose, the present invention adopts the following technical solutions: The present invention provides an LNG assembly structure, including an LNG cylinder, at least one group of finned tubes, a vaporizer, and a first bracket and a second bracket that are axially spaced and independently arranged along the LNG cylinder. The first bracket is provided with a first support groove with an upward opening, and the second bracket is provided with a second support groove with an upward opening. One end of the LNG cylinder is supported by the bottom wall of the first support groove, and the other end is supported by the bottom wall of the second support groove;

[0009] The finned tube is fixed on one side of the first bracket in the axial direction of the LNG cylinder, and the finned tube is installed below the LNG cylinder;

[0010] The vaporizer is fixed on one side of the first bracket in the axial direction of the LNG cylinder, and / or the vaporizer is fixed on one side of the second bracket in the axial direction of the LNG cylinder.

[0011] Preferably, the finned tube is installed on one side of the first bracket close to the second bracket.

[0012] Preferably, a first support beam is installed on the first bracket. Each group of finned tubes is correspondingly provided with a group of the first support beams. Each group of the first support beams includes two first support beams that are spaced apart along the length direction of the finned tube. Both ends of each group of finned tubes are respectively supported by the corresponding two first support beams.

[0013] Preferably, a first opening is provided on the first bracket, and a connecting pipeline is inserted into the first opening. The connecting pipeline connects the finned tube and the LNG cylinder.

[0014] Preferably, the vaporizer includes a first bottle body, and a first connecting plate is installed on the first bottle body. The first connecting plate is connected to the first bracket through fasteners.

[0015] Preferably, a first vaporization pipeline is further included. The first vaporization pipeline includes a first pipeline, a second pipeline, and a third pipeline. The first pipeline, the second pipeline, and the third pipeline are sequentially connected into a U shape. The first pipeline and the third pipeline are located on opposite sides of the first bracket in the axial direction of the LNG cylinder, and the second pipeline is located on one side of the first bracket in the length direction;

[0016] One end of the first pipeline away from the second pipeline is connected to the first bottle body, and one end of the third pipeline away from the second pipeline is connected to the finned tube.

[0017] Preferably, the vaporizer includes a second bottle body, and a second connecting plate is installed on the second bottle body. The second connecting plate is installed on the second bracket through fasteners.

[0018] Preferably, the first bottle body is installed on the side of the first bracket away from the second bracket; and / or, the second bottle body is installed on the side of the second bracket away from the first bracket.

[0019] Preferably, it further includes a second vaporization pipeline. A second opening is provided on the first bracket, and a third opening is provided on the second bracket. The second vaporization pipeline is passed through the second opening and the third opening, and the second vaporization pipeline connects the LNG gas cylinder with the second bottle body.

[0020] A vehicle includes the above-mentioned LNG assembly structure, and further includes a vehicle frame main body, and the first bracket and the second bracket are installed on the vehicle frame main body.

[0021] Beneficial effects: The first bracket and the second bracket are independent of each other, the connecting beam between the first bracket and the second bracket is cancelled, and at the same time, the finned tube is installed on the first bracket or the second bracket. When the LNG gas cylinder twists, since the first bracket and the second bracket are sleeved along the axis of the LNG gas cylinder, the first bracket and the second bracket do not twist themselves, so that the finned tube installed on the first bracket or the second bracket is prevented from twisting, reducing the probability of damage to the finned tube and improving the reliability of the LNG assembly structure installed on the vehicle. Description of the Drawings

[0022] Figure 1 is the front view of the LNG assembly structure of the present invention;

[0023] Figure 2 is the rear view of the LNG assembly structure of the present invention;

[0024] Figure 3 is the partial schematic view of the installation of the finned tube of the present invention.

[0025] In the figure: 1. First bracket; 111. First opening; 112. Second opening; 2. Second bracket; 211. Third opening; 3. LNG gas cylinder; 4. Finned tube; 5. First support beam; 6. First bottle body; 61. First connecting plate; 7. Second bottle body; 71. Second connecting plate; 8. First vaporization pipeline; 81. First pipeline; 82. Second pipeline; 83. Third pipeline; 9. Second vaporization pipeline. Detailed Embodiments

[0026] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that for the convenience of description, only parts related to the present invention are shown in the drawings, rather than all the structures.

[0027] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0028] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0029] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0030] In the prior art, a vaporizer and finned tubes are installed on the LNG assembly structure, and the LNG assembly structure is installed on the support feet. A connecting beam is installed along the axis of the LNG cylinder, and the vaporizer and finned tubes are installed on the connecting beam. Due to the relatively harsh vehicle working conditions, the LNG cylinder itself will twist along its own axis under the drive of torque, which will cause the vaporizer and finned tubes on the connecting beam to bend and twist, resulting in damage to the vaporizer and finned tubes and requiring regular replacement.

[0031] To solve the above problems, as Figures 1 to 3As shown in the figure, an embodiment of the present invention provides an LNG assembly structure, which includes an LNG gas cylinder 3, at least one group of finned tubes 4, a vaporizer, and a first bracket 1 and a second bracket 2 that are axially spaced and independently arranged along the LNG gas cylinder 3. The first bracket 1 is provided with a first support groove with an upward opening, and the second bracket 2 is provided with a second support groove with an upward opening. One end of the LNG gas cylinder 3 is supported by the bottom wall of the first support groove, and the other end is supported by the bottom wall of the second support groove; the finned tube 4 is fixed on one side of the first bracket 1 in the axial direction of the LNG gas cylinder, and the finned tube 4 is installed below the LNG gas cylinder 3; a vaporizer is fixed on one side of the first bracket 1 in the axial direction of the LNG gas cylinder 3, and / or a vaporizer is fixed on one side of the second bracket 2 in the axial direction of the LNG gas cylinder.

[0032] The first bracket 1 and the second bracket 2 are independent of each other. The first bracket 1 is close to the top of the LNG gas cylinder 3, and the second bracket 2 is far from the top of the LNG gas cylinder 3. Among them, the first bracket 1 and the second bracket 2 are directly installed on the rear side of the vehicle compartment. The first bracket 11 and the second bracket 21 are installed on the frame main body, so that the LNG gas cylinder 3 can be stably fixed. The first bracket 1 and the second bracket 2 are installed on the frame main body of the vehicle.

[0033] The first bracket 1 and the second bracket 2 are independent of each other. The first bracket 1 and the second bracket 2 are sleeved on the LNG gas cylinder 3. By canceling the connecting beam between the first bracket 1 and the second bracket 2, the overall weight of the LNG assembly can be reduced. The first bracket 11 and the second bracket 21 of the present invention are perpendicular to the axis of the LNG gas cylinder 3. When the LNG gas cylinder 3 twists along its own axis, the first bracket 11 has a displacement relative to the second bracket 21, and the distance of their relative movement is relatively large. Since the finned tube 4 is only connected to the first bracket 11 or the second bracket 21, the finned tube 4 on the first bracket 11 or the second bracket 21 will not be twisted and bent, reducing the deformation amount of the finned tube 4 and extending the service life of the fin. The finned tube 4 remains relatively stationary with respect to the first bracket 11 or the second bracket 21.

[0034] In order to reduce the length of the connecting pipeline and the weight of the LNG assembly structure, the finned tube 4 is installed on one side of the first bracket 1 close to the second bracket 2. The finned tube 4 is perpendicular to the axis of the LNG gas cylinder 3. Since there is enough space between the first bracket 11 and the second bracket 21, the finned tube 4 is installed on the lower side of the LNG gas cylinder 3. When the LNG gas cylinder 3 twists, the displacement amount of the first bracket 11 relative to the second bracket 21 is the largest, and the finned tube 4 is only installed on the first bracket 11, which can avoid the large-scale twisting of the finned tube 4 under the action of the first bracket 11 and the second bracket 21, improve the service life of the fin, and reduce the replacement and maintenance cost of the finned tube 4.

[0035] To more stably fix the finned tube 4, a first support beam 5 is installed on the first bracket 1. One set of first support beams 5 is provided corresponding to each group of finned tubes 4. Each set of first support beams 5 includes two first support beams 5 arranged at intervals along the length direction of the finned tube 4. The two ends of each group of finned tubes 4 are respectively supported by the corresponding two first support beams 5. The first support beam 5 is vertically installed on the side of the first bracket 11. The two ends of the finned tube 4 are placed on the first support beam 5. Usually, the first support beam 5 is installed on the first bracket 11 in the form of bolt connection. After the first support beam 5 is installed, the finned tube 4 is placed on the first support beam 5 and fixed. Two layers of first support beams 5 are installed on the first bracket 11 of the present invention. One group of finned tubes 4 is installed on the upper layer, and two groups of finned tubes 4 are installed on the lower layer. Finally, the finned tubes 4 are connected to the LNG gas cylinder 3 through connecting pipelines. Different numbers of finned tubes 4 can be installed on the first bracket 11.

[0036] In order to improve the space utilization rate, a first opening 111 is provided on the first bracket 11. A connecting pipeline passes through the first opening 111, and the connecting pipeline connects the finned tube 4 and the LNG gas cylinder 3. By providing the first opening 111 on the first finned tube 4, the connecting pipeline can pass through the first opening 111, making the total volume occupied by the LNG assembly smaller and smaller. On the one hand, opening a hole on the first bracket 11 can reduce the total weight of the LNG assembly. At the same time, the diameter of the first opening 111 is much larger than the diameter of the connecting pipeline. During the process of the LNG gas cylinder 3 twisting, the connecting pipeline will have a small displacement, and the larger-diameter first opening 111 can avoid contact with the connecting pipeline and prevent the connecting pipeline from colliding with the inner wall of the first opening 111 and being damaged. At the same time, the installation position of the connecting pipeline can also be adjusted, making the installation easier.

[0037] The LNG assembly structure includes a first cylinder body 6 and a second cylinder body 7. The first cylinder body 6 is installed on the first bracket 11 through fasteners, and the second cylinder body 7 is installed on the second bracket 21 through fasteners.

[0038] The first cylinder body 6 and the second cylinder body 7 are respectively installed on the first bracket 11 and the second bracket 21 of the present invention. The first cylinder body 6 moves synchronously with the first bracket 11, and the second cylinder body 7 moves synchronously with the second bracket 21. The torsional amplitude of the first bracket 11 and the second bracket 21 themselves is relatively small. And since the connecting beam between the first bracket 1 and the second bracket 2 is cancelled, the first cylinder body 6 on the first bracket 11 will not be twisted and bent. Similarly, the second cylinder body 7 on the second bracket 21 will not be twisted and bent either, reducing the probability of damage, prolonging the service life of the first cylinder body 6 and the second cylinder body 7, and reducing the replacement frequency.

[0039] The first bottle body 6 is installed on the side away from the second bracket 2. The axis of the first bottle body 6 is perpendicular to the axis of the LNG cylinder 3. A first connecting plate 61 is installed on the first bottle body 6. A first through hole is provided on the first connecting plate 61, and a third through hole is provided on the first bracket 11. After the bolt passes through the first through hole and the third through hole, it is screwed with a nut. Through the first connecting plate 61, the first bottle body 6 can be quickly fixed on the first bracket 11. When the first bracket 11 twists, the first bracket 11 and the first bottle body 6 move synchronously, and the first bottle body 6 remains stationary relative to the first bracket 11, avoiding abnormal deformation of the first bottle body 6 and extending the service life of the first bottle body 6.

[0040] The second bottle body 7 is installed on the side away from the first bracket 1. The axis of the second bottle body 7 is perpendicular to the axis of the LNG cylinder 3. A second connecting plate 71 is installed on the second bottle body 7. A second through hole is provided on the second connecting plate 71, and a fourth through hole is provided on the second bracket 21. After the bolt passes through the second through hole and the fourth through hole, it is screwed with a nut. Similarly, through the second connecting plate 71, the second bottle body 7 can be quickly fixed on the second bracket 21. When the second bracket 21 twists, the second bracket 21 and the second bottle body 7 move synchronously, and the second bottle body 7 remains stationary relative to the second bracket 21, avoiding abnormal deformation of the second bottle body 7 and extending the service life of the second bottle body 7.

[0041] It should be particularly noted that the first bottle body 6 is installed on the side of the first bracket 1 away from the second bracket 2; and / or, the second bottle body 7 is installed on the side of the second bracket 2 away from the first bracket 1. The installation positions of the first bottle body 6 and the second bottle body 7 of the present invention can be flexibly replaced and are not limited to the above installation positions.

[0042] The first vaporization pipeline 8 includes a first pipeline 81, a second pipeline 82 and a third pipeline 83. The first pipeline 81, the second pipeline 82 and the third pipeline 83 are sequentially connected into a U shape. The first pipeline 81 and the third pipeline 83 are located on opposite sides of the first bracket 1 in the axial direction of the LNG cylinder 3, and the second pipeline 82 is located on one side of the first bracket 1 in the length direction; one end of the first pipeline 81 away from the second pipeline 82 is connected to the first bottle body 6, and one end of the third pipeline 83 away from the second pipeline 82 is connected to the finned tube 4. The first vaporization pipeline 8 is away from the first bracket 1, which can avoid hitting the first vaporization pipeline 8 during the twisting process of the LNG cylinder 3, making the LNG cylinder 3 more reliable.

[0043] The second opening 112 is formed in the first bracket 11, and the third opening 211 is formed in the second bracket 21. The second vaporization pipeline 9 is passed through the second opening 112 and the third opening 211, and the second vaporization pipeline 9 connects the LNG gas cylinder 3 and the second cylinder body 7. By providing the second opening 112 and the third opening 211, the connection end of the second cylinder body 7 at the tail of the LNG gas cylinder 3 can be communicated with the LNG gas cylinder 3. The diameters of the second through hole and the third through hole are much larger than the diameter of the second vaporization pipeline 9. When the LNG gas cylinder 3 undergoes an axial twist and relative displacement occurs between the first bracket 11 and the second bracket 21, it can prevent the second opening 112 and the third opening 211 from colliding with the second vaporization pipeline 9, reducing the probability of damage to the second vaporization pipeline 9.

[0044] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments, and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An LNG assembly structure, characterized in that: The invention comprises an LNG gas cylinder (3), at least one group of finned tubes (4), a vaporizer, and a first bracket (1) and a second bracket (2) which are spaced apart and independently arranged along the axial direction of the LNG gas cylinder (3), wherein the first bracket (1) is provided with a first supporting groove with an opening facing upward, and the second bracket (2) is provided with a second supporting groove with an opening facing upward, and one end of the LNG gas cylinder (3) is supported by the groove bottom wall of the first supporting groove, and the other end is supported by the groove bottom wall of the second supporting groove; The fin tube (4) is fixed to the first bracket (1) on one side of the LNG cylinder in the axial direction, and the fin tube (4) is installed below the LNG cylinder (3); The first bracket (1) is fixed with the vaporizer on one side of the axial direction of the LNG gas cylinder (3), and / or the second bracket (2) is fixed with the vaporizer on one side of the axial direction of the LNG gas cylinder.

2. The LNG assembly structure according to claim 1, characterized in that: The fin tube (4) is mounted on a side of the first bracket (1) close to the second bracket (2).

3. The LNG assembly structure according to claim 2, characterized in that: A first support beam (5) is mounted on the first bracket (1); each group of the fin tubes (4) is provided with a corresponding group of the first support beams (5); each group of the first support beams (5) comprises two first support beams (5) arranged at intervals along the length direction of the fin tubes (4); and both ends of each group of the fin tubes (4) are respectively supported by the corresponding two first support beams (5).

4. The LNG assembly structure according to claim 1, characterized in that: The first bracket (1) is provided with a first opening (111), a connecting pipeline is passed through the first opening (111), and the connecting pipeline connects the fin tube (4) and the LNG cylinder (3).

5. The LNG assembly structure according to any one of claims 1 to 4, characterized in that: The vaporizer comprises a first bottle body (6), a first connecting plate (61) is mounted on the first bottle body (6), and the first connecting plate (61) is connected to the first bracket (1) via a fastener.

6. The LNG assembly structure according to claim 5, characterized in that: The invention also comprises a first vaporization pipeline (8), wherein the first vaporization pipeline (8) comprises a first pipeline (81), a second pipeline (82) and a third pipeline (83), wherein the first pipeline (81), the second pipeline (82) and the third pipeline (83) are connected in sequence to form a U-shape, wherein the first pipeline (81) and the third pipeline (83) are located on opposite sides of the first support (1) in the axial direction of the LNG cylinder (3), and the second pipeline (82) is located on one side of the first support (1) in the length direction; One end of the first pipeline (81) away from the second pipeline (82) is connected to the first bottle body (6), and one end of the third pipeline (83) away from the second pipeline (82) is connected to the fin tube (4).

7. The LNG assembly structure according to claim 6, characterized in that: The vaporizer comprises a second bottle body (7), a second connecting plate (71) is mounted on the second bottle body (7), and the second connecting plate (71) is mounted on the second bracket (2) via a fastener.

8. The LNG assembly structure according to claim 7, characterized in that: The first bottle body (6) is mounted on a side of the first bracket (1) away from the second bracket (2); and / or the second bottle body (7) is mounted on a side of the second bracket (2) away from the first bracket (1).

9. The LNG assembly structure according to claim 7, characterized in that: The invention also comprises a second vaporization pipeline (9), wherein the first bracket (1) is provided with a second opening (112), the second bracket (2) is provided with a third opening (211), the second vaporization pipeline (9) is passed through the second opening (112) and the third opening (211), and the second vaporization pipeline (9) connects the LNG cylinder (3) with the second cylinder body (7).

10. A vehicle, characterized in that: It comprises the LNG assembly structure as claimed in claim 1, and also comprises a frame body, and the first bracket (1) and the second bracket (2) are mounted on the frame body.

Images