LNG storage tanks and LNG storage tank combination equipment

Abstract

The present invention provides an LNG storage tank and an LNG storage tank assembly, relating to the technical field of liquefied natural gas storage. The LNG storage tank provided by the present invention comprises: a tank body and a hoop frame; the tank body comprises: a first side wall, a second side wall, a third side wall, and a fourth side wall, the first side wall, the second side wall, the third side wall, and the fourth side wall being sequentially connected and collectively enclosing a cubic storage cavity; the hoop frame is installed in the storage cavity, with the four sides of the hoop frame correspondingly abutting the first side wall, the second side wall, the third side wall, and the fourth side wall. The LNG storage tank provided by the present invention can improve space utilization and structural strength.

Description

Technical Field

[0001] The present invention relates to the technical field of liquefied natural gas storage, and in particular to an LNG storage tank and an LNG storage tank assembly device. Background Art

[0002] Conventional LNG (liquefied natural gas) tanks are typically spherical or cylindrical due to their high internal pressure and thin sidewalls. However, these spherical or cylindrical tanks suffer from the technical problem of low space efficiency. Since storing LNG requires high structural strength, cubic tanks are relatively weak. Therefore, despite their high space efficiency, cubic tanks are not suitable for LNG storage. Summary of the Invention

[0003] The object of the present invention is to provide an LNG storage tank and an LNG storage tank assembly device, which can improve space utilization and structural strength.

[0004] In a first aspect, the present invention provides an LNG storage tank comprising: a tank body and a hoop frame;

[0005] The tank body comprises: a first side wall, a second side wall, a third side wall and a fourth side wall, wherein the first side wall, the second side wall, the third side wall and the fourth side wall are sequentially connected and together enclose a cubic storage cavity;

[0006] The hoop frame is installed in the storage cavity, and four sides of the hoop frame abut against the first side wall, the second side wall, the third side wall and the fourth side wall in a one-to-one correspondence.

[0007] In combination with the first aspect, the present invention provides a first possible implementation of the first aspect, wherein the storage cavity extends along the x-axis, the plurality of hoop frames are spaced apart along the x-axis, and the plurality of hoop frames are all perpendicular to the x-axis.

[0008] In combination with the first possible implementation of the first aspect, the present invention provides a second possible implementation of the first aspect, wherein one end cover of the storage cavity is closed with a first end cover, and the other end cover of the storage cavity is closed with a second end cover.

[0009] In combination with the second possible implementation manner of the first aspect, the present invention provides a third possible implementation manner of the first aspect, wherein a tension rod is connected between the first end cover and the second end cover.

[0010] In combination with the third possible implementation of the first aspect, the present invention provides a fourth possible implementation of the first aspect, wherein the first end cover and the second end cover are respectively connected with reinforcing ribs.

[0011] In combination with the third possible implementation of the first aspect, the present invention provides a fifth possible implementation of the first aspect, wherein transition portions are respectively provided at both ends of the tension rod.

[0012] In combination with the third possible implementation of the first aspect, the present invention provides a sixth possible implementation of the first aspect, wherein the cross section of the tension rod perpendicular to the x-axis is circular or cross-shaped.

[0013] In combination with the first aspect, the present invention provides a seventh possible implementation manner of the first aspect, wherein the hoop-shaped frame includes an annular structure and is provided with an inner hole.

[0014] In combination with the first aspect, the present invention provides an eighth possible implementation manner of the first aspect, wherein a swing control structure is installed in the storage cavity, and the swing control structure is spaced apart from the hoop frame.

[0015] In a second aspect, the present invention provides an LNG storage tank assembly device, comprising: a frame and the LNG storage tank provided in the first aspect, wherein a plurality of the LNG storage tanks are arranged at intervals and are respectively installed on the frame.

[0016] The embodiments of the present invention bring the following beneficial effects: the first side wall, the second side wall, the third side wall and the fourth side wall are connected in sequence and jointly enclosed to form a cubic storage cavity, the hoop frame is installed in the storage cavity, and the four sides of the hoop frame are in one-to-one contact with the first side wall, the second side wall, the third side wall and the fourth side wall, and the cubic storage cavity is formed by the first side wall, the second side wall, the third side wall and the fourth side wall, thereby improving the space utilization of the tank body, and the structural strength of the tank body is improved by the support of the hoop frame.

[0017] 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

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in related technologies, the following briefly introduces the drawings required for use in the specific embodiments or related technical descriptions. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 Schematic diagram of an LNG storage tank provided in an embodiment of the present invention Figure 1 ;

[0020] Figure 2 Schematic diagram of an LNG storage tank provided in an embodiment of the present invention Figure 2 ;

[0021] Figure 3 Cross-sectional view of the hoop frame and tension rod of the LNG storage tank provided by the embodiment of the present invention Figure 1 ;

[0022] Figure 4 Cross-sectional view of the hoop frame and tension rod of the LNG storage tank provided by the embodiment of the present invention Figure 2 ;

[0023] Figure 5 This is a schematic diagram of an LNG storage tank assembly device provided in an embodiment of the present invention.

[0024] Icons: 100 - tank body; 101 - storage chamber; 110 - first side wall; 120 - second side wall; 130 - third side wall; 140 - fourth side wall; 200 - hoop frame; 201 - inner hole; 300 - first end cover; 400 - second end cover; 500 - reinforcing rib; 600 - tension rod; 610 - transition part; 700 - swing control structure; 800 - frame. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Physical quantities in formulas, unless separately marked, should be understood as basic quantities of the International System of Units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation or integration.

[0027] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0028] Example 1

[0029] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the LNG storage tank provided by the embodiment of the present invention includes: a tank body 100 and a hoop frame 200;

[0030] The tank body 100 includes a first side wall 110, a second side wall 120, a third side wall 130, and a fourth side wall 140. The first side wall 110, the second side wall 120, the third side wall 130, and the fourth side wall 140 are sequentially connected and together enclose a cubic storage cavity 101.

[0031] The hoop frame 200 is installed in the storage cavity 101 , and four sides of the hoop frame 200 abut against the first side wall 110 , the second side wall 120 , the third side wall 130 and the fourth side wall 140 in a one-to-one correspondence.

[0032] Specifically, the tank body 100 is configured as a cubic tank, expanding the possibilities of LNG tank shapes and improving the space utilization of the LNG tank. The hoop frame 200 is supported by the inner sidewalls of the storage chamber 101. The first sidewall 110, the second sidewall 120, the third sidewall 130, and the fourth sidewall 140 are respectively abutted against the hoop frame 200, thereby enhancing the structural strength of the tank body 100.

[0033] like Figure 1 and Figure 2 As shown, in the embodiment of the present invention, the storage cavity 101 extends along the x-axis, a plurality of hoop-shaped frames 200 are spaced apart along the x-axis, and the plurality of hoop-shaped frames 200 are all perpendicular to the x-axis.

[0034] Specifically, the storage cavity 101 is rectangular in a cross section perpendicular to the x-axis, and the storage cavity 101 extends along the x-axis. A plurality of hoop-shaped frames 200 are arranged at intervals along the x-axis, and are jointly supported inside the storage cavity 101 by the plurality of hoop-shaped frames 200, thereby improving the structural strength of the tank body 100.

[0035] Furthermore, one end of the storage cavity 101 is covered with a first end cover 300 , and the other end of the storage cavity 101 is covered with a second end cover 400 .

[0036] Specifically, openings are respectively provided at both ends of the storage cavity 101, the first end cover 300 covers one end of the storage cavity 101, and the second end cover 400 covers the other end of the storage cavity 101, and the opening of the storage cavity 101 is jointly blocked by the first end cover 300 and the second end cover 400.

[0037] Furthermore, a tension rod 600 is connected between the first end cover 300 and the second end cover 400 .

[0038] Specifically, one end of the tension rod 600 is connected to the first end cover 300, and the other end of the tension rod 600 is connected to the second end cover 400. The first end cover 300 and the second end cover 400 are both subjected to the tension of the tension rod 600, so that the tank body 100 is clamped between the first end cover 300 and the second end cover 400, and then the first end cover 300 and the second end cover 400 are tightly covered on the tank body 100 respectively.

[0039] like Figure 1 As shown, the first end cover 300 and the second end cover 400 are respectively connected with a reinforcing rib 500. The first end cover 300 and the second end cover 400 are respectively enhanced in structural strength by the reinforcing rib 500.

[0040] Furthermore, transition portions 610 are respectively provided at both ends of the tension rod 600 .

[0041] Specifically, the radial dimension of the transition portion 610 increases from the end away from the end cover to the end connected to the end cover, and the transition portion 610 is connected to the end cover, thereby increasing the contact area between the transition portion 610 and the end cover.

[0042] like Figure 1 、 Figure 3 and Figure 4 As shown, the cross section of the tension rod 600 perpendicular to the x-axis is circular or cross-shaped.

[0043] Specifically, multiple tension rods 600 are arranged at intervals in the cross section perpendicular to the x-axis, and are connected between the first end cover 300 and the second end cover 400 through multiple tension rods 600. The tension rods 600 have a tendency to pull the first end cover 300 and the second end cover 400 closer to each other, thereby ensuring that the first end cover 300 and the second end cover 400 are tightly covered on the tank body 100 respectively.

[0044] Furthermore, the hoop-shaped frame 200 includes an annular structure, and the hoop-shaped frame 200 is provided with an inner hole 201 .

[0045] Specifically, a separation cavity is formed between any two hoop frames 200, and two adjacent separation cavities are connected through the inner hole 201. The unfolded surface of the hoop frame 200 is perpendicular to the x-axis. The hoop frame 200 supports the tank body 100 on a plane perpendicular to the x-axis, thereby improving the structural strength of the LNG storage tank.

[0046] like Figure 1 and Figure 2 As shown, a swing control structure 700 is installed in the storage chamber 101 and is spaced apart from the hoop frame 200. The swing control structure 700 is installed in the storage chamber 101 to generate a swing control effect on the liquefied natural gas in the storage chamber 101.

[0047] Example 2

[0048] like Figure 1 and Figure 5 As shown, the LNG storage tank assembly equipment provided by the embodiment of the present invention includes: a frame 800 and the LNG storage tanks provided by the first embodiment, and multiple LNG storage tanks are arranged at intervals and respectively installed on the frame 800.

[0049] Specifically, two adjacent LNG storage tanks are non-watertight, multiple LNG storage tanks extend along the x-axis, and multiple LNG storage tanks are respectively connected to the frame 800 to form a combined structure, thereby improving the space utilization of multiple LNG storage tanks.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An LNG storage tank, characterized in that: include: Tank body (100) and hoop frame (200); The tank body (100) comprises: a first side wall (110), a second side wall (120), a third side wall (130) and a fourth side wall (140); the first side wall (110), the second side wall (120), the third side wall (130) and the fourth side wall (140) are sequentially connected and together enclose a cubic storage cavity (101); The hoop-shaped frame (200) is installed in the storage cavity (101), and the four sides of the hoop-shaped frame (200) are in one-to-one correspondence with the first side wall (110), the second side wall (120), the third side wall (130), and the fourth side wall (140); The storage cavity (101) extends along the x-axis, a plurality of the hoop-shaped frames (200) are arranged at intervals along the x-axis, and the plurality of the hoop-shaped frames (200) are all perpendicular to the x-axis; One end cover of the storage cavity (101) is covered with a first end cover (300), and the other end cover of the storage cavity (101) is covered with a second end cover (400); A tension rod (600) is connected between the first end cover (300) and the second end cover (400); The first end cover (300) and the second end cover (400) are both subjected to the tension of the tension rod (600), so that the tank body (100) is clamped between the first end cover (300) and the second end cover (400); Transition portions (610) are respectively provided at both ends of the tension rod (600), and the radial dimensions of the transition portions (610) increase gradually in the direction of the tension rod (600) pointing toward the end connected to the first end cover (300) or the second end cover (400).

2. The LNG storage tank according to claim 1, characterized in that: The first end cover (300) and the second end cover (400) are respectively connected with a reinforcing rib (500).

3. The LNG storage tank according to claim 1, characterized in that: The cross section of the tension rod (600) perpendicular to the x-axis is circular or cross-shaped.

4. The LNG storage tank according to claim 1, characterized in that: The hoop-shaped frame (200) comprises an annular structure, and the hoop-shaped frame (200) is provided with an inner hole (201).

5. The LNG storage tank according to claim 1, characterized in that: A swing control structure (700) is installed in the storage cavity (101), and the swing control structure (700) is spaced apart from the hoop frame (200).

6. An LNG storage tank assembly device, characterized in that: include: A frame (800) and the LNG storage tank according to any one of claims 1 to 5, wherein a plurality of the LNG storage tanks are arranged at intervals and are respectively mounted on the frame (800).

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