On-board liquid hydrogen storage tank and vehicle

Abstract

The utility model provides a vehicle-mounted liquid hydrogen storage tank and a vehicle, and relates to the field of vehicle engineering technology. The vehicle-mounted liquid hydrogen storage tank comprises: a tank body and a spiral rib installed inside the tank body, and the outer ring of the spiral rib is welded to the tank body. Compared with welding multiple baffles separately, the processing efficiency is higher, which is conducive to reducing the production cost of the liquid hydrogen storage tank. The spiral rib can separate the impact of liquid hydrogen, and can also separate the thermal stratification caused by heat leakage, shaking and flashing. The temperature difference of each divided part is small, and then the overall temperature difference is also small, which reduces the degree of thermal stratification to a certain extent, thereby achieving the technical effects of preventing liquid hydrogen from shaking and reducing the degree of thermal stratification.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle engineering, in particular to a vehicle-mounted liquid hydrogen storage tank and a vehicle. Background Art

[0002] For vehicles that use hydrogen as fuel, or vehicles that transport liquid hydrogen, the acceleration, deceleration, and vibration of the vehicle during driving will cause the liquid hydrogen to slosh in the tank, and the mechanical energy of the sloshing impact will be converted into heat energy, thereby increasing the evaporation rate of the liquid hydrogen. In addition, due to factors such as heat leakage, sloshing, and flash evaporation, the liquid hydrogen in the liquid hydrogen storage tank will absorb heat and cause uneven temperature distribution. The higher temperature liquid hydrogen will float, resulting in a temperature gradient along the liquid hydrogen storage tank in the direction of gravity.

[0003] Although installing multiple baffles in the liquid hydrogen storage tank can block the flow of liquid hydrogen and achieve an anti-sway effect, when there are multiple baffles and the baffles are densely distributed, the liquid hydrogen storage tank cannot be equipped with wall ribs to improve the structural strength, otherwise the baffles and the wall ribs will interfere with each other, and neither can meet the welding conditions. In addition, the multiple baffles need to be welded and fixed separately, which leads to low processing efficiency of the liquid hydrogen storage tank, thereby increasing the production cost of the liquid hydrogen storage tank. Utility Model Content

[0004] The utility model aims to provide a vehicle-mounted liquid hydrogen storage tank and a vehicle to alleviate the technical problems of liquid hydrogen sloshing and thermal stratification.

[0005] In a first aspect, the utility model provides a vehicle-mounted liquid hydrogen storage tank, comprising: a tank body and a spiral rib plate installed inside the tank body;

[0006] The outer ring of the spiral rib is welded to the tank body.

[0007] In combination with the first aspect, the utility model provides a first possible implementation of the first aspect, wherein the spiral rib is configured as an integrally formed structure.

[0008] In combination with the first aspect, the utility model provides a second possible implementation of the first aspect, wherein a first welding section and a second welding section are provided along the outer ring of the spiral rib plate, and the first welding section and the second welding section are respectively welded to the tank body;

[0009] The first welding section extends from one end of the spiral rib plate to the middle, and the second welding section extends from the other end of the spiral rib plate to the middle, with a spacing section between the first welding section and the second welding section.

[0010] In combination with the first aspect, the utility model provides a third possible implementation of the first aspect, wherein the tank body has a column section with a cylindrical inner cavity, the spiral rib is installed inside the column section, and the spiral rib is coaxial with the column section.

[0011] In combination with the first aspect, the utility model provides a fourth possible implementation of the first aspect, wherein the ratio of the inner diameter to the outer diameter of the spiral rib is greater than 1 / 2.

[0012] In combination with the first aspect, the utility model provides a fifth possible implementation of the first aspect, wherein the ratio of the inner diameter to the outer diameter of the spiral rib is less than or equal to 2 / 3.

[0013] In combination with the third possible implementation of the first aspect, the utility model provides a sixth possible implementation of the first aspect, wherein the difference between the outer radius and the inner radius of the spiral rib is greater than or equal to 1 / 5 of the inner radius of the column segment.

[0014] In combination with the third possible implementation of the first aspect, the utility model provides a seventh possible implementation of the first aspect, wherein, if the axial dimension of the column segment is greater than 5m, the pitch of the spiral rib is less than 1 / 3 of the axial dimension of the column segment.

[0015] In combination with the third possible implementation of the first aspect, the utility model provides an eighth possible implementation of the first aspect, wherein, if the axial dimension of the column segment is less than or equal to 5m, the pitch of the spiral rib is greater than or equal to 1 / 3 of the axial dimension of the column segment.

[0016] In a second aspect, the vehicle provided by the utility model is equipped with the on-board liquid hydrogen storage tank recorded in the first aspect, and the tank body is arranged horizontally so that the axis of the spiral rib plate extends laterally.

[0017] The embodiment of the utility model brings the following beneficial effects: spiral ribs are installed inside the tank body, and the outer ring of the spiral ribs is welded to the tank body, which has higher processing efficiency than welding multiple baffles separately, and is conducive to reducing the production cost of liquid hydrogen storage tanks. In addition, the spiral ribs can separate the impact of liquid hydrogen, and can also separate the thermal stratification caused by heat leakage, sloshing and flashing. The temperature difference of each divided part is small, and then the overall temperature difference is also small, which reduces the degree of thermal stratification to a certain extent, thereby achieving the technical effects of preventing liquid hydrogen from sloshing and reducing the degree of thermal stratification.

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the related technologies, the drawings required for use in the specific implementation methods or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 An axial cross-sectional view of a vehicle-mounted liquid hydrogen storage tank provided by an embodiment of the utility model;

[0021] Figure 2 A radial cross-sectional view of a vehicle-mounted liquid hydrogen storage tank provided by an embodiment of the utility model;

[0022] Figure 3 A schematic diagram of the spiral ribs of the on-board liquid hydrogen storage tank provided in an embodiment of the utility model.

[0023] Icons: 100 - tank body; 110 - column section; 200 - spiral rib; 201 - first point; 202 - second point; 203 - third point; 204 - fourth point; 210 - first welding section; 220 - second welding section. DETAILED DESCRIPTION

[0024] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 a limitation on the present utility model. In addition, the terms "first", "second", and "third" are only used to describe the difference in names, and cannot be understood as indicating or implying relative importance. The physical quantities in the formula, if not separately marked, should be understood as basic quantities of the basic units of the International System of Units, or derived quantities derived from the basic quantities through mathematical operations such as multiplication, division, differentiation or integration.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected 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 according to specific circumstances.

[0027] like Figure 1 and Figure 2 As shown, the vehicle-mounted liquid hydrogen storage tank provided by the embodiment of the utility model includes: a tank body 100 and a spiral rib plate 200 installed inside the tank body 100; the outer ring of the spiral rib plate 200 is welded to the tank body 100.

[0028] Compared with welding multiple baffles on the tank body 100, the spiral ribs 200 are welded inside the tank body 100, which has higher processing efficiency and is conducive to reducing the production cost of the liquid hydrogen storage tank. In addition, the spiral ribs 200 can have a barrier effect on liquid hydrogen, separate the impact of liquid hydrogen, and divide the thermal stratification caused by heat leakage, sloshing and flashing. The temperature difference of each divided part is small, and then the overall temperature difference is also small, which reduces the degree of thermal stratification to a certain extent, thereby achieving the technical effects of preventing liquid hydrogen from sloshing and reducing the degree of thermal stratification.

[0029] like Figure 1 and Figure 3 As shown, in an embodiment of the utility model, a first welding section 210 and a second welding section 220 are provided along the outer circle of the spiral rib plate 200, and the first welding section 210 and the second welding section 220 are respectively welded and connected to the tank body 100; the first welding section 210 extends from one end of the spiral rib plate 200 to the middle, and the second welding section 220 extends from the other end of the spiral rib plate 200 to the middle, and a spacing section is provided between the first welding section 210 and the second welding section 220.

[0030] A first point 201, a second point 202, a third point 203 and a fourth point 204 are set in the outer ring of the spiral rib plate 200 along the axial direction from one end to the other end, and a first welding section 210 along the outer ring of the spiral rib plate 200 is located between the first point 201 and the second point 202, and a second welding section 220 along the outer ring of the spiral rib plate 200 is located between the third point 203 and the fourth point 204. During welding, the first point 201 and the fourth point 204 are first welded and fixed in the tank body 100, and then the first welding section 210 and the second welding section 220 are welded and fixed, which can reduce the amount of welding work and improve the processing efficiency.

[0031] like Figure 1As described above, the tank body 100 has a column section 110 with a cylindrical inner cavity, and the spiral ribs 200 are installed inside the column section 110, and the spiral ribs 200 are coaxial with the column section 110. Along the circumference of the tank body 100, the barrier effect of the spiral ribs 200 on liquid hydrogen is evenly distributed.

[0032] In an optional embodiment, if the axial dimension of the column segment 110 is greater than 5 m, the pitch of the spiral rib 200 is less than 1 / 3 of the axial dimension of the column segment 110, so that the spiral blades of the spiral rib 200 are distributed more densely, thereby enhancing the barrier effect of the spiral rib 200 on liquid hydrogen for the tank body 100 with a larger axial dimension.

[0033] In another optional embodiment, if the axial dimension of the column segment 110 is less than or equal to 5m, the pitch of the spiral rib 200 is greater than or equal to 1 / 3 of the axial dimension of the column segment 110, so that the spiral blade distribution of the spiral rib 200 becomes sparse, which reduces the consumable cost of the spiral rib 200 for the tank body 100 with a smaller axial dimension and increases the space that can be arranged in the tank body 100.

[0034] like Figure 2 As shown, the ratio of the inner diameter to the outer diameter of the spiral rib 200 is greater than 1 / 2, so that the spiral rib 200 occupies a larger area in the radial cross section of the tank body 100, but still ensures that the liquid hydrogen can be dispersed and circulated in the axial direction in the tank body 100.

[0035] In addition, when the internal space of the tank body 100 and the axial flow area require it, the ratio of the inner diameter to the outer diameter of the spiral rib plate 200 can be enlarged to 2 / 3.

[0036] Furthermore, the difference between the outer radius and the inner radius of the spiral rib 200 is greater than or equal to 1 / 5 of the inner radius of the column segment 110. In other words, the radial width of the spiral rib 200 should be greater than or equal to 1 / 5 of the inner radius of the column segment 110, thereby ensuring that the spiral rib 200 can utilize the space inside the tank to produce sufficient barrier and anti-sway effects.

[0037] like Figure 1 As shown, the vehicle provided by the embodiment of the utility model is equipped with an on-board liquid hydrogen storage tank recorded in any of the above-mentioned embodiments. For fuel cell vehicles using hydrogen as fuel, the on-board liquid hydrogen storage tank can store liquid hydrogen to achieve energy storage; for vehicles transporting liquid hydrogen, loading liquid hydrogen in the on-board liquid hydrogen storage tank can also play the role of preventing sway and reducing the degree of thermal stratification.

[0038] In the embodiment of the utility model, the tank body 100 is arranged horizontally so that the axis of the spiral rib plate 200 extends laterally. When the vehicle accelerates, decelerates or turns, the lateral impact caused by the inertia of the liquid hydrogen can be better blocked and reduced by the spiral rib plate 200.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A vehicle-mounted liquid hydrogen storage tank, characterized in that: include: A tank body (100) and a spiral rib plate (200) installed inside the tank body (100); The outer ring of the spiral rib plate (200) is welded to the tank body (100).

2. The vehicle-mounted liquid hydrogen storage tank according to claim 1, characterized in that: The spiral rib plate (200) is configured as an integrally formed structure.

3. The vehicle-mounted liquid hydrogen storage tank according to claim 2, characterized in that: A first welding section (210) and a second welding section (220) are provided along the outer circle of the spiral rib plate (200), and the first welding section (210) and the second welding section (220) are respectively welded to connect the tank body (100); The first welding section (210) extends from one end of the spiral rib plate (200) toward the middle, and the second welding section (220) extends from the other end of the spiral rib plate (200) toward the middle, with a spacing section between the first welding section (210) and the second welding section (220).

4. The vehicle-mounted liquid hydrogen storage tank according to claim 1, characterized in that: The tank body (100) comprises a column section (110) whose inner cavity is cylindrical, the spiral rib plate (200) is installed inside the column section (110), and the spiral rib plate (200) is coaxial with the column section (110).

5. The vehicle-mounted liquid hydrogen storage tank according to any one of claims 1 to 4, characterized in that: The ratio of the inner diameter to the outer diameter of the spiral rib plate (200) is greater than 1 / 2.

6. The vehicle-mounted liquid hydrogen storage tank according to any one of claims 1 to 4, characterized in that: The ratio of the inner diameter to the outer diameter of the spiral rib plate (200) is less than or equal to 2 / 3.

7. The vehicle-mounted liquid hydrogen storage tank according to claim 4, characterized in that: The difference between the outer radius and the inner radius of the spiral rib plate (200) is greater than or equal to 1 / 5 of the inner radius of the column segment (110).

8. The vehicle-mounted liquid hydrogen storage tank according to claim 4, characterized in that: If the axial dimension of the column segment (110) is greater than 5 m, the pitch of the spiral rib (200) is less than 1 / 3 of the axial dimension of the column segment (110).

9. The vehicle-mounted liquid hydrogen storage tank according to claim 4, characterized in that: If the axial dimension of the column segment (110) is less than or equal to 5 m, the pitch of the spiral rib (200) is greater than or equal to 1 / 3 of the axial dimension of the column segment (110).

10. A vehicle, characterized in that: The vehicle is equipped with the on-board liquid hydrogen storage tank according to any one of claims 1 to 8, and the tank body (100) is arranged horizontally so that the axis of the spiral rib plate (200) extends laterally.

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