LNG (Liquefied Natural Gas) storage tank

Abstract

The utility model discloses an LNG (liquefied natural gas) storage tank, and particularly relates to the technical field of storage tanks, the LNG storage tank comprises an outer tank body and an inner tank body, the outer side of the inner tank body is fixedly connected with four connecting rings, the outer sides of the four connecting rings are all fixedly connected with the outer tank body, and the top end of the inner tank body is fixedly communicated with a gas pipe; the top end of the air pipe penetrates through the outer tank body and is fixedly connected with the outer tank body, the top end of the air pipe fixedly communicates with a connector, a valve is fixedly installed on the air pipe and located between the outer tank body and the inner tank body, and a rotating assembly is arranged on one side of the valve. The inner tank body and the valve are protected through the outer tank body, the self-locking motor works to drive the rotating handle on the valve to rotate, external natural gas enters the gas pipe through the connector and finally enters the inner tank body through the gas pipe, in the same way, the self-locking motor rotates reversely, the valve can be closed, the structure is simple, the double-layer structure is achieved, the safety performance is high, and the using effect is good.

Description

Technical Field

[0001] This utility model relates to the field of gas storage tank technology, and more specifically, to an LNG liquefied natural gas storage tank. Background Technology

[0002] LNG (liquefied natural gas) storage tanks are containers used to store liquefied natural gas. LNG is produced by cooling natural gas to extremely low temperatures (approximately -162 degrees Celsius) to convert it into a liquid form, significantly reducing its volume and facilitating storage and transportation. In existing storage tanks, when the spring-driven fixing block contacts the bottom surface, severe vibrations can occur, potentially causing cracks in the storage tank's delivery pipes and leading to natural gas leaks.

[0003] A search revealed that Chinese Patent CN219300497U discloses a natural gas storage tank. A discharge mechanism allows natural gas to be discharged from the tank. After the first compartment of the tank has been emptied, the first handle is turned, which drives a baffle to rotate via a drive shaft. When rotated 90 degrees, the rearmost baffle opens the vent hole of the rearmost layer, allowing natural gas from the second compartment to be transmitted through the vent hole. This divides the tank into multiple compartments, ensuring that natural gas is evenly distributed across them, thus reducing the risk of leakage in case of pipeline failure.

[0004] When the above-mentioned gas tank is in use, the outlet pipe is fixedly installed at the rear of the gas tank shell by welding. Inside the outlet pipe, a butterfly core is installed through a bearing. A second handle is fixedly installed above the butterfly core by welding. However, it is inconvenient for the second handle to provide protection. During use, sharp external objects can easily damage or shake the second handle, resulting in poor performance. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an LNG liquefied natural gas storage tank, which aims to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an LNG liquefied natural gas storage tank, comprising an outer tank and an inner tank, wherein four connecting rings are fixedly connected to the outer side of the inner tank, and the outer sides of the four connecting rings are all fixedly connected to the outer tank; a gas pipe is fixedly connected to the top of the inner tank, the top of the gas pipe penetrates through the outer tank and is fixedly connected to it, a connector is fixedly connected to the top of the gas pipe, a valve is fixedly installed on the gas pipe, and the valve is located between the outer tank and the inner tank; a rotating assembly is provided on one side of the valve, the rotating assembly comprising a self-locking motor, a first bevel gear, a second bevel gear, and a rotating shaft.

[0007] Furthermore, the self-locking motor is fixedly installed on the top of the outer tank, and the output shaft end of the self-locking motor is fixedly connected to the first bevel gear. The second bevel gear meshes with the first bevel gear. The two ends of the rotating shaft are fixedly connected to the second bevel gear and the valve handle, respectively, and the rotating shaft is movably connected to one of the connecting rings through a bearing.

[0008] Furthermore, a protective frame is movably provided on the outside of the self-locking motor, and the bottom end of the protective frame is fixedly connected to the outer tank.

[0009] As can be seen, in the above technical solution, the protective frame can protect the self-locking motor.

[0010] Furthermore, a warning assembly is provided at the bottom of the outer tank, the warning assembly including a conduit, a threaded sleeve, a rubber gasket, and a sealing ring.

[0011] Furthermore, the top end of the conduit is fixedly connected to the outer tank, the threaded sleeve is threadedly connected to the conduit, the rubber gasket is fixedly installed at the bottom of the inner side of the threaded sleeve, and the sealing ring is movably sleeved on the conduit.

[0012] As can be seen, in the above technical solution, the sealing ring can improve the sealing performance between the limiting ring and the threaded sleeve.

[0013] Furthermore, a limiting ring is movably provided at the top of the sealing ring, and the limiting ring is fixedly sleeved on the conduit.

[0014] As can be seen, in the above technical solution, the limiting ring restricts the upward movement distance of the threaded sleeve.

[0015] Furthermore, a support seat is movably provided at the bottom of the threaded sleeve, and the top of the support seat is fixedly connected to the outer tank body.

[0016] It can be seen that the above technical solution is designed to facilitate support for the outer tank.

[0017] The technical effects and advantages of this utility model are as follows:

[0018] 1. This utility model protects the inner tank and valve through the outer tank. The self-locking motor drives the first bevel gear to rotate, which in turn drives the second bevel gear to rotate, which in turn drives the handle on the valve to rotate. External natural gas enters the gas pipe through the connector and finally enters the inner tank through the gas pipe. Similarly, the self-locking motor can close the valve by reversing. It has a simple structure, a double-layer structure, high safety performance, and good performance.

[0019] 2. In this utility model, when the valve is damaged, natural gas leaks into the outer tank through the valve, resulting in a higher pressure inside the outer tank. The higher pressure causes the rubber gasket to bulge. By observing whether the rubber gasket is bulging, it can be determined whether natural gas is leaking. The threaded sleeve is rotated away from the conduit to replace the threaded sleeve and the rubber gasket. The structure is simple and easy to use. Attached Figure Description

[0020] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a front view of the overall structure of this utility model;

[0023] Figure 3 This is a cross-sectional view of the outer tank body and a schematic diagram of the rotating assembly structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the assembly structure of the outer tank and inner tank sections of this utility model;

[0025] Figure 5 This is a schematic diagram of the assembly structure of the air tube and rotating component of this utility model;

[0026] Figure 6 This is a schematic diagram of the warning component structure of this utility model.

[0027] In the diagram: 1. Outer tank; 2. Support base; 3. Air pipe; 4. Connector; 5. Protective frame; 6. Warning assembly; 7. Rotating assembly; 8. Valve; 9. Inner tank; 10. Connecting ring; 601. Conduit; 602. Threaded sleeve; 603. Rubber pad; 604. Sealing ring; 605. Limiting ring; 701. Self-locking motor; 702. First bevel gear; 703. Second bevel gear; 704. Rotating shaft. Detailed Implementation

[0028] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] Refer to the instruction manual appendix Figure 1-6 An LNG storage tank according to this embodiment includes an outer tank 1 and an inner tank 9. Four connecting rings 10 are fixedly connected to the outer side of the inner tank 9, and the outer sides of the four connecting rings 10 are all fixedly connected to the outer tank 1. A gas pipe 3 is fixedly connected to the top of the inner tank 9. The top of the gas pipe 3 passes through the outer tank 1 and is fixedly connected to it. A connector 4 is fixedly connected to the top of the gas pipe 3. A valve 8 is fixedly installed on the gas pipe 3, and the valve 8 is located between the outer tank 1 and the inner tank 9. A rotating assembly 7 is provided on one side of the valve 8. The rotating assembly 7 includes a self-locking motor 701, a first bevel gear 702, a second bevel gear 703, and a rotating shaft 704.

[0030] Furthermore, the self-locking motor 701 is fixedly installed on the top of the outer tank 1, and the output shaft end of the self-locking motor 701 is fixedly connected to the first bevel gear 702. The second bevel gear 703 meshes with the first bevel gear 702. The two ends of the rotating shaft 704 are fixedly connected to the second bevel gear 703 and the handle of the valve 8, respectively. The rotating shaft 704 is movably connected to one of the connecting rings 10 through a bearing. A protective frame 5 is movably provided on the outside of the self-locking motor 701, and the bottom end of the protective frame 5 is fixedly connected to the outer tank 1.

[0031] Furthermore, a warning component 6 is provided at the bottom of the outer tank 1. The warning component 6 includes a conduit 601, a threaded sleeve 602, a rubber pad 603, and a sealing ring 604. The top end of the conduit 601 is fixedly connected to the outer tank 1. The threaded sleeve 602 is threadedly connected to the conduit 601. The rubber pad 603 is fixedly installed at the bottom of the inner side of the threaded sleeve 602. The sealing ring 604 is movably sleeved on the conduit 601. A limit ring 605 is movably provided at the top of the sealing ring 604, and the limit ring 605 is fixedly sleeved on the conduit 601.

[0032] When valve 8 is damaged, natural gas leaks into the outer tank 1 through valve 8, resulting in higher pressure inside the outer tank 1. This higher pressure causes the rubber gasket 603 to bulge. By observing whether the rubber gasket 603 is bulging, it can be determined whether there is a natural gas leak. Rotate the threaded sleeve 602 away from the conduit 601 to replace the threaded sleeve 602 and the rubber gasket 603. The structure is simple and easy to use. Similarly, the threaded sleeve 602 is installed. The limiting ring 605 restricts the upward movement distance of the threaded sleeve 602, and the sealing ring 604 can improve the sealing performance between the limiting ring 605 and the threaded sleeve 602.

[0033] Furthermore, a support base 2 is movably provided at the bottom of the threaded sleeve 602, and the top of the support base 2 is fixedly connected to the outer tank body 1.

[0034] The usage method of this embodiment is as follows:

[0035] In use, the outer tank 1 protects the inner tank 9 and valve 8. The self-locking motor 701 is activated, driving the first bevel gear 702 to rotate. Since the first bevel gear 702 meshes with the second bevel gear 703, it can drive the second bevel gear 703 to rotate, which in turn drives the handle on valve 8 to rotate. External natural gas enters the gas pipe 3 through connector 4 and finally enters the inner tank 9 through the gas pipe 3. Similarly, reversing the self-locking motor 701 can close valve 8. The structure is simple, with a double-layer design, high safety performance, and good performance. The protective frame 5 also protects the self-locking motor 701.

[0036] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited and can be determined using conventional equipment. Electrical control components not mentioned in this technical solution are not shown in the figures because they are existing technologies, and will not be described here.

[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An LNG (liquefied natural gas) storage tank, comprising an outer tank body (1) and an inner tank body (9), wherein four connecting rings (10) are fixedly connected to the outer side of the inner tank body (9), and the outer sides of the four connecting rings (10) are all fixedly connected to the outer tank body (1), characterized in that: The top of the inner tank (9) is fixedly connected to an air pipe (3), the top of the air pipe (3) passes through the outer tank (1) and is fixedly connected to it, the top of the air pipe (3) is fixedly connected to a connector (4), a valve (8) is fixedly installed on the air pipe (3), and the valve (8) is located between the outer tank (1) and the inner tank (9). A rotating assembly (7) is provided on one side of the valve (8), and the rotating assembly (7) includes a self-locking motor (701), a first bevel gear (702), a second bevel gear (703) and a rotating shaft (704).

2. The LNG liquefied natural gas storage tank according to claim 1, characterized in that: The self-locking motor (701) is fixedly installed on the top of the outer tank (1), and the output shaft end of the self-locking motor (701) is fixedly connected to the first bevel gear (702). The second bevel gear (703) meshes with the first bevel gear (702). The two ends of the rotating shaft (704) are fixedly connected to the second bevel gear (703) and the handle of the valve (8) respectively, and the rotating shaft (704) is movably connected to one of the connecting rings (10) through a bearing.

3. The LNG liquefied natural gas storage tank according to claim 1, characterized in that: The self-locking motor (701) is movably provided with a protective frame (5), and the bottom end of the protective frame (5) is fixedly connected to the outer tank (1).

4. The LNG liquefied natural gas storage tank according to claim 1, characterized in that: The bottom of the outer tank (1) is provided with a warning component (6), which includes a conduit (601), a threaded sleeve (602), a rubber pad (603), and a sealing ring (604).

5. The LNG liquefied natural gas storage tank according to claim 4, characterized in that: The top end of the conduit (601) is fixedly connected to the outer tank (1), the threaded sleeve (602) is threadedly connected to the conduit (601), the rubber pad (603) is fixedly installed at the bottom of the inner end of the threaded sleeve (602), and the sealing ring (604) is movably sleeved on the conduit (601).

6. The LNG liquefied natural gas storage tank according to claim 4, characterized in that: The top of the sealing ring (604) is movably provided with a limiting ring (605), and the limiting ring (605) is fixedly sleeved on the conduit (601).

7. The LNG liquefied natural gas storage tank according to claim 4, characterized in that: The bottom of the threaded sleeve (602) is movably provided with a support base (2), and the top of the support base (2) is fixedly connected to the outer tank body (1).

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