An automated loading and unloading liquefied natural gas tank container

Abstract

This utility model discloses an automated loading and unloading liquefied natural gas (LNG) tank container, including a tank body, a pressure booster installed on the tank body, an inlet pipe installed at the upper end of the tank body, an inlet valve installed at the inlet pipe, a first electric regulating valve installed at the lower end of the tank body, a pre-cooling pipe connected to the outlet end of the first electric regulating valve, a cryogenic pipeline pump connected to the outlet end of the pre-cooling pipe, a pipeline interface connected to the outlet end of the cryogenic pipeline pump, and a precooler installed at the lower end of the tank body. The beneficial effects of this utility model are that the precooler can cool the pre-cooling pipeline, thereby preventing pipeline damage caused by excessively low LNG temperatures. A cooling pipe is installed outside the pre-cooling pipeline, and then a low-temperature gas is added to the outside of the pre-cooling pipeline through a dryer, thereby cooling the pre-cooling pipeline and facilitating automated loading and unloading of LNG, improving efficiency.

Description

Technical Field

[0001] This utility model relates to the field of natural gas loading and unloading equipment technology, and more specifically, to an automated loading and unloading liquefied natural gas tank container. Background Technology

[0002] Liquefied natural gas (LNG) is a clean energy source with advantages such as high calorific value and low pollution. Long-distance transportation of LNG usually uses two methods: shipping and tank truck transportation. When using tank truck transportation, the LNG needs to be loaded into tank containers and unloaded after arriving at the designated location.

[0003] In the existing technology, when unloading liquefied natural gas from a tank, pumps and pipelines are generally used to extract the liquefied natural gas from the tank. However, since the temperature of the liquefied natural gas in the tank is low, direct extraction can easily cause the pipeline to rupture. Therefore, the pipeline needs to be pre-cooled. Utility Model Content

[0004] The purpose of this invention is to solve the problem of pipeline precooling by designing an automated loading and unloading liquefied natural gas tank container.

[0005] To achieve the above objectives, the technical solution of this utility model is an automated loading and unloading liquefied natural gas tank container, comprising a tank body, a booster installed on the tank body, an inlet pipe installed at the upper end of the tank body, an inlet valve installed at the inlet pipe, a first electric regulating valve installed at the lower end of the tank body, a precooling pipe connected to the outlet end of the first electric regulating valve, a cryogenic pipeline pump connected to the outlet end of the precooling pipeline, a pipeline interface connected to the outlet end of the cryogenic pipeline pump, and a precooler installed at the lower end of the tank body, the precooler being able to cool the precooling pipeline.

[0006] Furthermore, the precooler includes a dry refrigerator installed at the lower end of the tank, a second electric regulating valve installed on one side of the upper end of the dry refrigerator, a cooling pipe installed on the outside of the precooling pipe, the outlet end of the second electric regulating valve connected to the cooling pipe through a pipe, and a gas storage box installed on the tank, which is connected to the cooling pipe through a connecting pipe.

[0007] Furthermore, the cooling pipe is fitted inside the precooling pipe, and multiple support rods are installed inside the cooling pipe, which can be used to install the cooling pipe on the precooling pipe.

[0008] Furthermore, the gas storage box is equipped with multiple partitions, which divide the gas storage box into multiple gas storage spaces. Electromagnetic valves are installed on the partitions, which can disconnect or connect adjacent gas storage spaces.

[0009] Furthermore, a circulation pump is installed at the upper end of the gas storage tank, an air inlet pipe is installed at the inlet end of the circulation pump, one end of the air inlet pipe extends into the first gas storage space inside the gas storage tank, and an air outlet pipe is installed at the outlet end of the circulation pump, one end of the air outlet pipe is connected to the starting end of the cooling pipe.

[0010] The beneficial effects of this utility model are as follows: the precooler can cool the precooling pipeline, thereby preventing the pipeline from being damaged due to excessively low temperature of liquefied natural gas. A cooling pipeline is installed on the outside of the precooling pipeline, and then a low-temperature gas is added to the outside of the precooling pipeline through a dry refrigerator, thereby cooling the precooling pipeline and facilitating automatic loading and unloading of liquefied natural gas, thus improving efficiency.

[0011] After the precooling pipe has been cooled for a period of time, the gas released from the dryer can be increased by opening the solenoid valves on the gas storage tank in sequence. This allows the precooling pipe to be cooled in stages, preventing the precooling pipe from being lowered to an excessively low temperature all at once.

[0012] A circulating pump can drive cold gas to flow outside the precooling pipe, thereby increasing the cooling rate of the precooling pipe. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of an automated loading and unloading liquefied natural gas tank container according to the present invention;

[0014] Figure 2 This is a schematic diagram of the structure of the gas storage tank described in this utility model;

[0015] Figure 3 This is a schematic diagram showing the connection relationship between the precooling pipe and the cooling pipe described in this utility model;

[0016] In the diagram, 1. Tank; 2. Booster; 3. Inlet pipe; 4. Inlet valve; 5. First electric regulating valve; 6. Precooling pipe; 7. Cryogenic pipeline pump; 8. Pipeline interface; 9. Precooler; 10. Dryer; 11. Second electric regulating valve; 12. Cooling pipe; 13. Gas storage tank; 14. Connecting pipe; 15. Support rod; 16. Partition; 17. Gas storage space; 18. Solenoid valve; 19. Circulation pump; 20. Inlet pipe; 21. Outlet pipe. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. 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.

[0018] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, in the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0019] This utility model provides, for example Figure 1-3 The diagram shows an automated loading and unloading liquefied natural gas tank container, comprising a tank body 1, a booster 2 installed on the tank body 1, an inlet pipe 3 installed at the upper end of the tank body 1, an inlet valve 4 installed at the inlet pipe 3, a first electric regulating valve 5 installed at the lower end of the tank body 1, a precooling pipe 6 connected to the outlet end of the first electric regulating valve 5, a cryogenic pipeline pump 7 connected to the outlet end of the precooling pipe 6, a pipeline interface 8 connected to the outlet end of the cryogenic pipeline pump 7, and a precooler 9 installed at the lower end of the tank body 1, which can cool the precooling pipe 6.

[0020] The process of loading and unloading liquefied natural gas (LNG) using this device is as follows: Connect the LNG feeding pipe to the inlet valve 4, then open the inlet valve 4 to automatically feed the LNG into the tank 1. After feeding is completed, close the inlet valve 4 and then transport the tank. After transporting it to the designated location, connect the discharge pipe to the pipeline interface 8. First, the precooling pipeline 6 is cooled by the precooler 9. After cooling, open the first electric regulating valve 5 to release the LNG from the tank 1. The discharge speed of the LNG can be accelerated by the cryogenic pipeline pump 7. As the LNG is discharged, the gas pressure in the tank 1 decreases. The gas pressure in the tank 1 can be maintained by the booster 2, thereby ensuring the discharge efficiency.

[0021] Refer to the instruction manual appendix Figure 1The precooler 9 includes a dry refrigerator 10 installed at the lower end of the tank body 1. A second electric regulating valve 11 is installed on one side of the upper end of the dry refrigerator 10. A cooling pipe 12 is installed on the outside of the precooling pipe 6. The outlet end of the second electric regulating valve 11 is connected to the cooling pipe 12 through a pipe. A gas storage box 13 is installed on the tank body 1. The gas storage box 13 is connected to the cooling pipe 12 through a connecting pipe 14.

[0022] The process of precooler 9 cooling precooling pipe 6 is as follows: the second electric regulating valve 11 is opened and the opening size of the second electric regulating valve 11 is gradually increased, thereby adjusting the flow rate of the gas, allowing the cold gas in the dry refrigerator 10 to enter the cooling pipe 12, and then the precooling pipe 6 can be cooled through the cooling pipe 12. Since the gas pressure in the dry refrigerator 10 is much greater than the gas pressure in the cooling pipe 12 and the gas storage tank 13, the gas originally inside the cooling pipe 12 can enter the gas storage tank 13 through the connecting pipe 14, thereby facilitating the outflow of gas from the dry refrigerator 10.

[0023] Refer to the instruction manual appendix Figure 3 The cooling pipe 12 is fitted inside the precooling pipe 6. Multiple support rods 15 are installed inside the cooling pipe 12. The support rods 15 can install the cooling pipe 12 on the precooling pipe 6, so that the cold gas can completely wrap the precooling pipe 6, which can improve the cooling speed.

[0024] Refer to the instruction manual appendix Figure 2 The gas storage box 13 is equipped with multiple partitions 16, which divide the gas storage box 13 into multiple gas storage spaces 17. Solenoid valves 18 are installed on the partitions 16. Solenoid valves 18 can disconnect or connect adjacent gas storage spaces 17. Since the air pressure inside the dry refrigerator 10 is relatively high, the air pressure inside the gas storage space 17 can be lower than the air pressure inside the dry refrigerator 10. Therefore, by opening the solenoid valves 18 one by one, the cold air inside the dry refrigerator 10 can enter the gas storage box 13, which can facilitate the cooling of the pre-cooling pipe 6.

[0025] Refer to the instruction manual appendix Figure 1 A circulation pump 19 is installed at the upper end of the gas storage tank 13. An air inlet pipe 20 is installed at the inlet end of the circulation pump 19. One end of the air inlet pipe 20 extends into the first gas storage space 17 inside the gas storage tank 13. An air outlet pipe 21 is installed at the outlet end of the circulation pump 19. One end of the air outlet pipe 21 is connected to the starting end of the cooling pipe 12. When the circulation pump 19 is started, the circulation pump 19 can extract the gas in the gas storage tank 13 through the air inlet pipe 20 and then discharge it into the cooling pipe 12 through the air outlet pipe 21, thereby enabling the gas to circulate and improving the cooling efficiency.

[0026] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automated loading and unloading liquefied natural gas tank container, comprising a tank body (1), a booster (2) installed on the tank body (1), an inlet pipe (3) installed at the upper end of the tank body (1), and an inlet valve (4) installed at the inlet pipe (3), characterized in that, The lower end of the tank (1) is equipped with a first electric regulating valve (5), the outlet end of the first electric regulating valve (5) is connected to a precooling pipe (6), the outlet end of the precooling pipe (6) is connected to a low-temperature pipe pump (7), the outlet end of the low-temperature pipe pump (7) is connected to a pipe interface (8), the lower end of the tank (1) is equipped with a precooler (9), the precooler (9) can cool the precooling pipe (6); the precooler (9) includes a dry refrigerator (10) installed at the lower end of the tank (1), the upper side of the dry refrigerator (10) is equipped with a second electric regulating valve (11), the outside of the precooling pipe (6) is equipped with a cooling pipe (12), the outlet end of the second electric regulating valve (11) is connected to the cooling pipe (12) through a pipe, the tank (1) is equipped with a gas storage box (13), the gas storage box (13) is connected to the cooling pipe (12) through a connecting pipe (14).

2. An automated loading and unloading LNG tank container according to claim 1, characterized in that, The cooling pipe (12) is fitted inside the precooling pipe (6). Multiple support rods (15) are installed inside the cooling pipe (12). The support rods (15) can install the cooling pipe (12) on the precooling pipe (6).

3. An automated loading and unloading LNG tank container according to claim 2, characterized in that, The gas storage box (13) is equipped with multiple partitions (16), which divide the gas storage box (13) into multiple gas storage spaces (17). The partitions (16) are equipped with electromagnetic valves (18), which can disconnect or connect adjacent gas storage spaces (17).

4. An automated loading and unloading LNG tank container according to claim 3, characterized in that, A circulation pump (19) is installed at the upper end of the gas storage tank (13). An air inlet pipe (20) is installed at the inlet end of the circulation pump (19). One end of the air inlet pipe (20) extends into the first gas storage space (17) inside the gas storage tank (13). An air outlet pipe (21) is installed at the outlet end of the circulation pump (19). One end of the air outlet pipe (21) is connected to the starting end of the cooling pipe (12).

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