Liquefied natural gas cryogenic storage tank

Abstract

The utility model is suitable for liquefied natural gas technical field provides a kind of liquefied natural gas cryogenic storage tank, including tank body, tank body outside is sequentially provided with inner shell and shell, and inner shell and shell are all set in half circular arc form, and the both ends of inner shell are all provided with the connecting lug one of outward extension, and the both ends of shell are all provided with the connecting lug two of inward extension;The opposite side of inner shell and shell is provided with the buffer structure for buffering pressure resistance, and the limiting structure for limiting and fixing shell and inner shell is provided above connecting lug one.The utility model solves the technical problem that tank body is easily damaged, and further causes the leakage of liquefied natural gas, the spring two of the utility model tank body can effectively absorb and disperse impact force when tank body is impacted during transportation, ensure the integrity and safety of tank body, the detachable setting of spring one, arc plate one and arc plate two improves work efficiency, thereby prolongs the overall service life of device.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquefied natural gas technical field more specifically, it relates to a kind of liquefied natural gas cryogenic storage tank. BACKGROUND

[0002] With the continuous deterioration of air quality, the requirement of the state to environmental protection is increasingly strict, further increase the input and support strength of clean energy. As an important part of clean energy, natural gas is highly expected, and its proportion in primary energy consumption structure in our country is expected to be significantly increased from 6% in 2013 to about 10% in 2020.

[0003] In the current energy market, liquefied natural gas as a kind of efficient, clean energy carrier, its storage and transportation mode is concerned. Tank body, because its shape is regular, structure is solid and sealing performance is good, is widely used in the preservation and transportation of liquefied natural gas. This kind of tank body design, not only facilitate the stable storage of liquefied natural gas in various environments, also greatly promote its safe, efficient circulation in the global range.

[0004] However, due to the collision of tank body in the transportation process, and the existing protection measures are often insufficient, leading to tank body is easily damaged, and then cause the leakage of liquefied natural gas. This leakage not only causes the waste of energy, more likely to cause serious pollution to the environment, and even threaten the safety of people's life. UTILITY MODEL CONTENT

[0005] In view of the deficiencies in the prior art, the utility model aims at providing a kind of liquefied natural gas cryogenic storage tank.

[0006] To solve the above technical problems, the utility model is realized by the following technical schemes:

[0007] The utility model is a kind of liquefied natural gas cryogenic storage tank, including tank body, the inside of tank body is sequentially provided with inner shell and outer shell, and the inner shell and the outer shell are both arranged in the form of semicircular arc, the inner shell both ends are provided with the connecting lug one of outer extension, the outer shell both ends are provided with the connecting lug two of inner extension;

[0008] The inner shell and the outer shell opposite side are provided with the buffer structure for buffering pressure resistance, the connecting lug one is provided with the limiting structure for limiting and fixing the outer shell and the inner shell above.

[0009] As a preferred technical scheme of the utility model, the tank body is characterized in that: the inside of tank body is sequentially provided with inner shell and outer shell, and the inner shell and the outer shell are both arranged in the form of semicircular arc, the inner shell both ends are provided with the connecting lug one of outer extension, the outer shell both ends are provided with the connecting lug two of inner extension;

[0010] The inner shell and the outer shell are provided with a buffer structure for buffering compression resistance on opposite sides, and a limiting structure for limiting and fixing the outer shell and the inner shell is arranged above the connecting lug.

[0011] As a preferred technical scheme of the utility model, the arc-shaped side wall of the arc-shaped plate two away from the arc-shaped plate one is attached to the outer side wall of the tank body.

[0012] As a preferred technical scheme of the utility model, the arc-shaped plate one and the inner groove are threadedly connected with the same fastening bolt, and the fastening bolts are arranged in pairs.

[0013] As a preferred technical scheme of the utility model, the limiting structure comprises a vertical plate one fixedly connected to the top of the connecting lug two, the top of the connecting lug one is fixedly connected with a vertical plate two, the vertical plate two of the top of the two inner shells is threadedly connected with the same anti-dropping rod, the opposite sides of the vertical plate one and the vertical plate two are embedded with a pair of concave plates which slide, and the opposite side walls of the two concave plates are fixedly connected with the same spring one.

[0014] As a preferred technical scheme of the utility model, the opposite side walls of the vertical plate one and the vertical plate two are both provided with a sliding groove facilitating the horizontal sliding of the concave plate, and the sliding groove is arranged in a dovetail type.

[0015] The utility model has the advantages of:

[0016] The utility model discloses a buffer structure and limiting structure are arranged, when the tank body suffers impact, spring two can effectively absorb and disperse impact force in the transportation process of the tank body, thereby ensuring the integrity and safety of the tank body, not only reduce the damage risk in the transportation process, still promote the durability and reliability of the tank body. Meanwhile, the operator only needs to press two concave plates and subsequent dismounting and the like, and can easily take down spring one, arc-shaped plate one and arc-shaped plate two to replace or maintain, which simplifies the operation process and improves the working efficiency, thereby prolonging the overall service life of the device. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is an overall structure schematic view of the utility model of a liquefied natural gas cryogenic storage tank.

[0018] Figure 2 It is Figure 1 It is an enlarged view of A in the figure.

[0019] Figure 3 It is a schematic view of the utility model of a liquefied natural gas cryogenic storage tank after the outer shell is separated from the inner shell.

[0020] Figure 4The utility model provides a liquefied natural gas low temperature storage tank concave plate relative to the schematic view of the separation of the chute.

[0021] In the drawing: 1, tank body; 2, inner shell; 3, outer shell; 31, inner groove; 32, arc plate one; 33, arc plate two; 34, spring two; 35, fastening bolt; 4, vertical plate one; 41, vertical plate two; 42, anti-drop rod; 43, concave plate; 44, spring one; 45, chute. DETAILED DESCRIPTION

[0022] The principles and features of the utility model are described below in conjunction with the accompanying drawings, and the examples are only used to explain the utility model and not to limit the scope of the utility model. In the following paragraphs, the utility model is described in more detail by way of example with reference to the accompanying drawings. It should be noted that the accompanying drawings are very simplified and use non-precise proportions, only to facilitate, clearly assist the purpose of explaining the utility model embodiments.

[0023] It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there can be a middle component. When a component is referred to as "provided on" another component, it can be directly provided on the other component or there can be a middle component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0025] Please refer to Figures 1-4 The utility model provides the following technical solutions:

[0026] Specifically refers to a liquefied natural gas low temperature storage tank, including tank body 1, tank body 1 is the core part of the storage tank, for storing liquefied natural gas. Its outside is sequentially provided with inner shell 2 and outer shell 3, forms multilayer protection structure. Tank body 1 outside is sequentially provided with inner shell 2 and outer shell 3, and inner shell 2 and outer shell 3 are all arranged in the form of semicircle arc, and the both ends of inner shell 2 are provided with the outer extension connecting lug one, and the both ends are provided with the outer extension connecting lug one for connecting with outer shell 3 and limiting structure. The both ends of outer shell 3 are provided with the inner extension connecting lug two, and the both ends are provided with the inner extension connecting lug two and the connecting lug one of inner shell 2 are fixed.

[0027] The inner shell 2 and the outer shell 3 are provided with buffer structures for buffering pressure on opposite sides, and the connecting ears are provided with limiting structures above for limiting and fixing the outer shell 3 and the inner shell 2.

[0028] The buffer structure comprises an inner groove 31 formed on the vertical side wall of the outer shell 3 opposite the inner shell 2, and an arc-shaped plate one 32 is arranged in the inner groove 31, the arc-shaped plate one 32 is provided with an arc-shaped plate two 33 opposite one side of the inner shell 2, and the arc-shaped plate one 32 and the arc-shaped plate two 33 are fixedly connected with the same spring two 34 on the opposite side walls.

[0029] The arc-shaped side wall of the arc-shaped plate two 33 away from the arc-shaped plate one 32 is attached to the outer side wall of the tank body 1.

[0030] The arc-shaped plate one 32 and the inner groove 31 are threadedly connected with the same fastening bolt 35, and the fastening bolts 35 are arranged in pairs.

[0031] The limiting structure comprises a vertical plate one 4 fixedly connected to the top of the connecting ear two, the top of the connecting ear one is fixedly connected with a vertical plate two 41, the vertical plate two 41 of the top of the two inner shells 2 is threadedly connected with the same anti-dropping rod 42, the vertical plate one 4 and the vertical plate two 41 are embedded with a pair of concave plates 43 sliding on the opposite sides, and the relative position of the inner shell 2 and the outer shell 3 is fixed by the cooperation of the anti-dropping rod 42 and the concave plate 43, so as to prevent displacement.

[0032] The vertical plate one 4 and the vertical plate two 41 are both provided with a sliding groove 45 on the opposite side walls for facilitating the horizontal sliding of the concave plate 43, and the sliding groove 45 is arranged in a dovetail type.

[0033] The working principle of the liquefied natural gas low-temperature storage tank provided by the utility model is as follows:

[0034] Working principle:

[0035] Firstly, the tank body 1 of the liquefied natural gas storage tank is placed in a predetermined position to ensure stability.

[0036] During transportation, when the outer shell 3 receives a collision, the collision force received by the outer shell 3 is transmitted to the arc-shaped plate one 32, the arc-shaped plate one 32 transmits the force to the spring two 34, and the spring two 34 transmits the force to the arc-shaped plate two 33 after buffering, thereby reducing the collision damage to the tank body 1 and reducing the vibration and pressure impact of the tank body 1.

[0037] If the components in the buffer structure, such as spring two 34, arc plate one 32, etc. are found to be damaged or aged and need to be replaced, first unscrew the anti-pulling rod 42, press the two concave plates 43, compress the spring one 44, and then take off the two concave plates 43 from the vertical plate two 41, so that the inner shell 2 and the outer shell 3 can be taken off. After tightening the fastening bolts 35 with a tool, the arc plate one 32, the arc plate two 33 and the spring two 34 are taken off together for replacement and maintenance work.

[0038] The above is only a specific embodiment of the present application, but the technical features of the present application are not limited to this. Any simple change, equivalent replacement or modification made on the basis of the present application to solve the same technical problem and achieve the same technical effect is covered by the protection scope of the present application.

Claims

1. A liquefied natural gas cryogenic storage tank comprising a tank body (1), characterized in that: The tank body (1) is provided with an inner shell (2) and an outer shell (3) in sequence, and the inner shell (2) and the outer shell (3) are both provided in the form of a semicircular arc, both ends of the inner shell (2) are provided with outwardly extending connecting ears one, and both ends of the outer shell (3) are provided with inwardly extending connecting ears two. The inner shell (2) and the outer shell (3) are provided with a buffer structure for buffering and resisting pressure on opposite sides, and a limiting structure for limiting and fixing the outer shell (3) and the inner shell (2) is arranged above the connecting ears one.

2. A cryogenic tank for liquefied natural gas according to claim 1, characterized in that The buffer structure comprises an inner groove (31) formed on the vertical side wall of the outer shell (3) opposite the inner shell (2), an arc-shaped plate one (32) is arranged in the inner groove (31), an arc-shaped plate two (33) is arranged on the side of the arc-shaped plate one (32) opposite the inner shell (2), and the arc-shaped plate one (32) and the arc-shaped plate two (33) are fixedly connected with the same spring two (34) on the opposite side walls.

3. A cryogenic tank for liquefied natural gas according to claim 2, characterized in that The arc-shaped side wall of the arc-shaped plate two (33) away from the arc-shaped plate one (32) is attached to the outer side wall of the tank body (1).

4. A cryogenic tank for liquefied natural gas according to claim 2, characterized in that The arc-shaped plate one (32) and the inner groove (31) are threadedly connected with the same fastening bolt (35), and the fastening bolts (35) are arranged in pairs.

5. A cryogenic tank for liquefied natural gas according to claim 1, characterized in that, The limiting structure comprises a vertical plate one (4) fixedly connected to the top of the connecting ear two, a vertical plate two (41) fixedly connected to the top of the connecting ear one, a same anti-dropping rod (42) threadedly connected to the vertical plate two (41) of the top of the two inner shells (2), and a pair of concave plates (43) slidingly embedded on the opposite sides of the vertical plate one (4) and the vertical plate two (41), and the same spring one (44) is fixedly connected to the opposite side walls of the two concave plates (43).

6. A cryogenic tank for liquefied natural gas according to claim 5, characterized in that The vertical plate one (4) and the vertical plate two (41) are both provided with a sliding groove (45) for facilitating the horizontal sliding of the concave plate (43) on the opposite side walls, and the sliding groove (45) is provided in the form of a swallowtail.

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