Liquid hydrogen spherical tank strut connecting structure

Abstract

A liquid hydrogen spherical tank supporting column connecting structure comprises a supporting column for supporting a spherical tank, the supporting column is divided into three sections, namely an upper section supporting column, a middle supporting column and a lower section supporting column, and the three sections are sequentially connected through a first heat insulation structure and a second heat insulation structure. The first heat insulation structure comprises an inner connecting plate I, an inner partition plate and an inner connecting plate II which are sequentially arranged and connected through bolts, gaskets and nuts, the upper end of the inner connecting plate I is connected with the upper-section supporting column, and the lower end of the inner connecting plate II is connected with the middle supporting column. The second heat insulation structure comprises an outer connecting plate I, an outer partition plate and an outer connecting plate II which are sequentially arranged and connected through bolts, gaskets and nuts, the upper end of the outer connecting plate I is connected with the other end of the middle supporting column, and the lower end of the outer connecting plate II is connected with the lower section supporting column. The inner partition plates, the outer partition plates and the gaskets are all made of glass fiber reinforced plastics. The device is simple in structure, convenient to install, remarkable in effect and capable of being widely applied to the liquid hydrogen spherical tank.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid hydrogen spherical tanks, in particular to a liquid hydrogen spherical tank support pillar connection structure. Background Art

[0002] As an excellent clean energy, hydrogen has the advantages of high efficiency, pollution-free and sustainability, and is one of the most promising clean energy sources. At present, my country's liquid hydrogen storage and transportation technology is limited, the storage capacity of liquid hydrogen is small, and it is mainly used in the field of aerospace, and it is difficult to achieve large-scale civilian use. Spherical storage tanks are the most suitable equipment for liquid hydrogen storage in the future because of their small footprint and large storage volume. Due to the special properties of liquid hydrogen, the heat loss of the storage container should be minimized as much as possible, so as to ensure the effective storage and application of liquid hydrogen. In order to meet the above requirements, in addition to adopting advanced insulation methods, the design of liquid hydrogen spherical tanks is also very different from ordinary spherical tanks in structural design. As far as the design of the spherical tank support structure is concerned, it is necessary to meet the requirements of stiffness, strength and tank body shrinkage on the support, and at the same time, it is also necessary to consider effectively reducing the loss of heat. At present, the support of domestic liquid hydrogen vacuum double-layer spherical tanks mostly adopts ear seats and sleeves. For example, Chinese patent CN 114738658 A (a sleeve support structure for a large liquid hydrogen vacuum double-layer spherical tank) is in the form of a sleeve, with a complex structure, high difficulty in processing and manufacturing, and difficult to ensure accuracy. Utility Model Content

[0003] The utility model provides a liquid hydrogen spherical tank support connection structure, which can not only meet the requirements of spherical tank support design rigidity and strength, but also enable the inner spherical tank support legs to expand and contract radially through the U-shaped structure of the inner connecting plate, thereby offsetting the influence of the tank body shrinkage on the support and the outer tank.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A support connecting structure for a liquid hydrogen spherical tank comprises a support for the spherical tank, wherein the support is divided into three sections, namely an upper support, an intermediate support and a lower support, and the three are connected in sequence through a first and a second heat insulation structure; the first heat insulation structure comprises an inner connecting plate I, an inner baffle and an inner connecting plate II which are arranged in sequence, and the three are connected through bolts, washers and nuts, the upper end of the inner connecting plate I is connected to the upper support, and the lower end of the inner connecting plate II is connected to the intermediate support; the second heat insulation structure comprises an outer connecting plate I, an outer baffle and an outer connecting plate II which are arranged in sequence, and the three are connected through bolts, washers and nuts, the upper end of the outer connecting plate I is connected to the other end of the intermediate support, and the lower end of the outer connecting plate II is connected to the lower support; the inner baffle, the outer baffle and the washers are all made of glass fiber reinforced plastics.

[0006] The inner connecting plate I, the inner partition plate and the inner connecting plate II are all provided with U-shaped grooves, and the three are connected by bolts and double nuts are used to prevent loosening.

[0007] A plurality of inner ribs are evenly arranged on the lower end surface of the inner connecting plate II.

[0008] A plurality of outer ribs are evenly arranged on the upper end surface of the outer connecting plate I and the lower end surface of the outer connecting plate II.

[0009] The utility model can not only meet the requirements of the design rigidity and strength of the spherical tank support, but also enable the inner spherical tank support legs to expand and contract radially through the U-shaped structure of the inner connecting plate, thereby offsetting the impact of the tank body shrinkage on the support and the outer tank. Moreover, the design of this structure can effectively reduce the loss of liquid hydrogen heat, reduce the difficulty of manufacturing and installation, and improve the storage and application efficiency of liquid hydrogen. It is a key structure for the development and promotion of liquid hydrogen spherical tanks.

[0010] The utility model has the advantages of simple structure, convenient installation, remarkable function and good heat insulation effect, and can be widely used in liquid hydrogen spherical tanks. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the appearance of the utility model;

[0012] Figure 2 It is a component diagram of the utility model;

[0013] Figure 3 yes Figure 2 AA view in the figure;

[0014] Figure 4 yes Figure 2 BB view in the figure;

[0015] In the figure: 1. Lower section support; 2. External rib plate; 3. External connection plate II; 4. External partition plate; 5. External connection plate I; 6. Middle support; 7. Internal rib plate II; 8. Internal connection plate II; 9. Internal partition plate; 10. Internal connection plate I; 11 Upper section support; 12. Stud bolts; 13. Nuts; 14. Gaskets. DETAILED DESCRIPTION

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and implementation modes.

[0017] like Figure 2As shown, a liquid hydrogen spherical tank support connection structure includes an inner and outer double-layer spherical tank and a support for the spherical tank, the support is divided into three sections, namely an upper section support 11, an intermediate support 6, and a lower section support 1, and the three are connected in sequence through a first and a second insulation structure; the first insulation structure includes an inner connecting plate Ⅰ10, an inner baffle 9, and an inner connecting plate Ⅱ8 which are arranged in sequence, and the three are connected by bolts, washers 14, and nuts, the upper end of the inner connecting plate Ⅰ10 is connected to the upper section support 11, and the lower end of the inner connecting plate Ⅱ8 is connected to the intermediate support 6; the second insulation structure includes an outer connecting plate Ⅰ5, an outer baffle 4, and an outer connecting plate Ⅱ3 which are arranged in sequence, and the three are connected by bolts, washers 14, and nuts, the upper end of the outer connecting plate Ⅰ5 is connected to the other end of the intermediate support 6, and the lower end of the outer connecting plate Ⅱ3 is connected to the lower section support 1; the inner baffle 9, the outer baffle 4, and the washers 14 are all made of glass fiber reinforced plastics. FRP material is light and hard, with good thermal properties. It is an excellent thermal insulation material that can enhance the thermal insulation effect of the connection structure. The process is simple and can effectively reduce the heat loss of liquid hydrogen spherical tanks.

[0018] The bolts in the first and second heat insulation structures are stud bolts 12, the number of which is determined according to the size of the connection plate, and is 4, 6, 8, etc., which are multiples of 2 and are evenly distributed.

[0019] The upper end of the upper support 11 is connected to the inner spherical tank and is the inner support. The middle support 6 passes through the outer spherical shell and is connected to the lower support 11. The lower support 1 is located at the lower part of the outer spherical tank.

[0020] The middle support and the upper support are made of the same material as the inner tank body to meet low temperature working conditions.

[0021] like Figure 4 As shown, the inner connecting plate I (10), the inner partition plate (9), and the inner connecting plate II (8) are all provided with U-shaped grooves, and the three are connected by bolts, and double nuts are used to prevent loosening. The number of bolts is 2, and the bolts and nuts at this time only play a connecting role, and are simply tightened, so that the upper support can freely expand and contract in the radial direction, effectively offsetting the influence of cold shrinkage on the support.

[0022] like Figure 2 As shown, a plurality of inner ribs 7 are evenly arranged on the lower end surface of the inner connecting plate II 8 in order to improve the stability of the pillar.

[0023] The upper end surface of the outer connecting plate Ⅰ5 and the lower end surface of the outer connecting plate Ⅱ3 are evenly provided with a plurality of outer ribs 2, which are also used to improve the stability of the pillar.

[0024] The inner and outer connecting plates of the first and second heat insulation structures are connected with the upper, middle and lower pillars by continuous welding to enhance the strength of the pillars.

[0025] The utility model reasonably designs the dimensions of various structural components and makes full use of steel plate specifications as much as possible, reduces the difficulty of manufacturing and installation, and saves costs. It utilizes a U-shaped structure to cleverly solve the impact of the shrinkage of the inner tank on the support. At the same time, it selects fiberglass as the partition material to further reduce heat loss from the structural design, thereby ensuring the performance of the liquid hydrogen spherical tank.

[0026] The above description is only an application example of the present utility model, and certainly cannot be used to limit the scope of rights of the present utility model. Therefore, equivalent changes made according to the scope of the patent application of the present utility model still fall within the protection scope of the present utility model.

Claims

1. A liquid hydrogen spherical tank support connection structure, comprising a support for supporting the spherical tank, characterized in that: The pillar is divided into three sections, namely an upper pillar (11), an intermediate pillar (6), and a lower pillar (1), and the three are connected in sequence by a first heat insulation structure and a second heat insulation structure; the first heat insulation structure comprises an inner connecting plate I (10), an inner partition plate (9), and an inner connecting plate II (8), which are arranged in sequence, and the three are connected by bolts, washers (14), and nuts. The upper end of the inner connecting plate I (10) is connected to the upper pillar (11), and the lower end of the inner connecting plate II (8) is connected to the intermediate pillar (6); the second heat insulation structure comprises an outer connecting plate I (5), an outer partition plate (4), and an outer connecting plate II (3), which are arranged in sequence, and the three are connected by bolts, washers (14), and nuts. The upper end of the outer connecting plate I (5) is connected to the other end of the intermediate pillar (6), and the lower end of the outer connecting plate II (3) is connected to the lower pillar (1); the inner partition plate (9), the outer partition plate (4), and the washers (14) are all made of glass fiber reinforced plastics.

2. A liquid hydrogen spherical tank support connection structure according to claim 1, characterized in that: The inner connecting plate I (10), the inner partition plate (9) and the inner connecting plate II (8) are all provided with U-shaped grooves, and the three are connected by bolts and double nuts are used to prevent loosening.

3. A liquid hydrogen spherical tank support connection structure according to claim 1, characterized in that: A plurality of inner rib plates (7) are evenly arranged on the lower end surface of the inner connecting plate II (8).

4. A liquid hydrogen spherical tank support connection structure according to claim 1, characterized in that: A plurality of outer rib plates (2) are evenly arranged on the upper end surface of the outer connecting plate I (5) and the lower end surface of the outer connecting plate II (3).

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