Liquefied natural gas filling station

Abstract

The liquefied natural gas filling station disclosed by the application comprises a first module, a second module and a cofferdam, the first module comprises a storage tank assembly and a pump sled, the pump sled is located at one side of the storage tank assembly, and the storage tank assembly is connected with the pump sled through a pipeline assembly; the second module comprises a dispenser assembly, the dispenser assembly comprises at least one dispenser, and the dispenser is connected with the pump sled; the first module and the dispenser are arranged inside the cofferdam. The liquefied natural gas filling station disclosed by the application integrates the storage tank assembly and the pump sled in the first module, the pump sled is located at one side of the storage tank assembly, the land occupation area of the pump sled and the storage tank assembly as a whole can be reduced, the length of the pipeline assembly between the pump sled and the storage tank assembly can be shortened, and the inflection point of the pipeline assembly can be reduced; the dispenser is arranged inside the cofferdam, the connecting pipeline between the dispenser and the pump sled and the storage tank assembly can be shortened, and the land occupation area of the whole can be reduced; the storage tank assembly and the pump sled are integrated, the on-site construction time can be reduced, and the on-site construction efficiency can be improved.

Description

Technical Field

[0001] This application relates to the field of natural gas technology, and more specifically, to a liquefied natural gas refueling station. Background Technology

[0002] A liquefied natural gas (LNG) refueling station consists of storage tanks, pump skids, and refueling machines. In existing LNG refueling stations, the storage tanks, pump skids, and refueling machines are all set up separately. The refueling machines are placed on an independent refueling island, and the pump skids are connected to the storage tanks and refueling machines separately. This solution results in long connecting pipelines between the various devices, a large footprint, a large amount of on-site construction work, and a long construction period.

[0003] Therefore, how to reduce the footprint of liquefied natural gas refueling stations and reduce on-site construction has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a liquefied natural gas (LNG) refueling station that reduces the land area occupied by the LNG refueling station and reduces the amount of on-site construction.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A liquefied natural gas (LNG) refueling station includes:

[0007] The first module includes a storage tank assembly and a pump skid, the pump skid being located on one side of the storage tank assembly, and the storage tank assembly being connected to the pump skid via a pipeline assembly;

[0008] The second module includes a gas dispenser assembly, which includes at least one gas dispenser connected to the pump skid.

[0009] The cofferdam, with both the first and second modules located inside the cofferdam.

[0010] Optionally, in the above-mentioned liquefied natural gas refueling station, the refueling unit assembly includes one refueling machine, which is disposed on either side of the first module.

[0011] Optionally, in the above-mentioned liquefied natural gas refueling station, the refueling unit assembly includes at least two refueling units, each of which is respectively disposed at both ends or both sides of the first module.

[0012] Optionally, in the above-mentioned liquefied natural gas refueling station, the refueling unit assembly includes at least four refueling units, each of which is respectively located at one of the four corners of the cofferdam.

[0013] Optionally, in the above-mentioned liquefied natural gas refueling station, the pump skid includes a pump skid outer frame and a pump pool assembly, wherein the pump pool assembly is detachably connected to the pump skid outer frame.

[0014] Optionally, in the above-mentioned liquefied natural gas refueling station, the outer frame of the pump skid is provided with a lifting device, the lifting device is detachably installed on the outer frame of the pump skid, and the pump pool assembly is provided with a hoisting part that cooperates with the lifting device.

[0015] Optionally, in the above-mentioned liquefied natural gas refueling station, the pump pool assembly includes a pump pool, a submersible pump, and a pump pool basket. The pump pool is located inside the pump pool basket, and the pump pool basket is detachably connected to the outer frame of the pump skid. The submersible pump is located inside the pump pool. The outlet pipe of the storage tank assembly is connected to the pump pool, and the outlet pipe of the pump pool is connected to the refueling machine. The hoisting unit is located in the pump pool.

[0016] Optionally, in the above-mentioned liquefied natural gas refueling station, the second module includes an unloading skid, and the storage tank assembly is provided with a connecting pipeline that can be detachably connected to the unloading skid, and the unloading skid can be connected to the unloading truck.

[0017] Optionally, in the above-mentioned liquefied natural gas refueling station, the storage tank assembly includes a storage tank, an EAG heater, and a booster vaporizer, wherein the EAG heater and the booster vaporizer are respectively connected to the storage tank.

[0018] Optionally, in the above-mentioned liquefied natural gas (LNG) refueling station, the LNG refueling station also includes a refueling machine canopy disposed above the refueling machine.

[0019] As can be seen from the above scheme, in the liquefied natural gas (LNG) refueling station disclosed in this application, the storage tank assembly and the pump skid are integrated into one unit in the first module. The pump skid is located on one side of the storage tank assembly, which can reduce the overall footprint of the pump skid and the storage tank assembly, and shorten the length of the pipeline assembly between the pump skid and the storage tank assembly, reducing the number of bends in the pipeline assembly. The gas dispenser is set inside the cofferdam, which can shorten the connecting pipeline between the gas dispenser and the pump skid and the storage tank assembly, and reduce the overall footprint. The integration of the storage tank assembly and the pump skid allows the installation of the pipeline assembly between the two to be carried out in the factory without on-site assembly, which can reduce on-site construction time, improve on-site construction efficiency, and improve product quality. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a front view of the first module disclosed in the embodiments of this application;

[0022] Figure 2 This is a top view of the first module disclosed in the embodiments of this application;

[0023] Figure 3 This is a schematic diagram of the pump skid frame disclosed in the embodiments of this application;

[0024] Figure 4 This is a schematic diagram of the layout of a liquefied natural gas (LNG) refueling station disclosed in an embodiment of this application. Figure 1 ;

[0025] Figure 5 This is a schematic diagram of the layout of a liquefied natural gas (LNG) refueling station disclosed in an embodiment of this application. Figure 1 Layout diagram of the unloading truck and the filling truck;

[0026] Figure 6 This is a schematic diagram of the layout of a liquefied natural gas (LNG) refueling station disclosed in an embodiment of this application. Figure 2 ;

[0027] Figure 7 This is a schematic diagram of the layout of a liquefied natural gas (LNG) refueling station disclosed in an embodiment of this application. Figure 2 Layout diagram of the unloading truck and the filling truck;

[0028] Figure 8 This is a schematic diagram of the layout of a liquefied natural gas (LNG) refueling station disclosed in an embodiment of this application. Figure 3 ;

[0029] Figure 9 This is a schematic diagram of the layout of a liquefied natural gas (LNG) refueling station disclosed in an embodiment of this application. Figure 3 Layout diagram of the unloading truck and the filling truck;

[0030] Figure 10 This is a schematic diagram of the lifting device disclosed in the embodiments of this application;

[0031] Figure 11 This is a schematic diagram of the unloading skid disclosed in an embodiment of this application.

[0032] Among them, 100 is the storage tank assembly, 110 is the storage tank, 111 is the liquid outlet pipe, 120 is the EAG heater, and 130 is the booster vaporizer.

[0033] 200 is the pump skid, 210 is the pump skid outer frame, 211 is the track, 220 is the pump pool assembly, 221 is the pump pool, and 222 is the pump pool basket.

[0034] 300 is the gas dispenser assembly, and 310 is the gas dispenser itself;

[0035] 400 is a lifting device, 410 is a hand-pushed trolley, and 420 is a hand-operated hoist.

[0036] 500 is the unloading truck;

[0037] 600 is a refueling truck;

[0038] 700 is the gas dispenser canopy;

[0039] 800 is the cofferdam;

[0040] 900 is the unloading skid, 910 is the pressurized liquid phase pipeline, 911 is the connecting hose, 912 is the cryogenic break valve, 913 is the first shut-off valve, 914 is the second shut-off valve, 920 is the unloading liquid phase pipeline, 921 is the check valve, 930 is the pressurized gas phase pipeline, 931 is the safety valve, 940 is the vent pipeline, and 950 is the connecting pipe. Detailed Implementation

[0041] The core of this application is to disclose a liquefied natural gas (LNG) refueling station that reduces the floor space required for LNG refueling stations.

[0042] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] like Figure 5 , Figure 7 and Figure 8As shown in the figure, this application discloses a liquefied natural gas (LNG) refueling station, including a first module, a second module, and a dike 800. The first module is located inside the dike 800, which serves to contain and control leaks. The first module includes a storage tank assembly 100 and a pump skid 200. The pump skid 200 is located on one side of the storage tank assembly 100, but it can be located on either side. The figure shows the pump skid 200 located on the right side of the storage tank assembly 100 for illustration. The storage tank assembly 100 is connected to the pump skid 200 via a pipeline assembly, and the storage tank assembly 100 and the pump skid 200 are integrated into one unit. The second module includes a refueling unit assembly 300, which includes at least one refueling unit 310 connected to the pump skid 200 for refueling a liquefied gas truck 600. It should be noted that the refueling unit 310 mentioned in this application refers to a liquefied natural gas (LNG) refueling unit. The gas dispenser 310 is located inside the cofferdam 800 to shorten the connecting pipelines between the gas dispenser 310 and the storage tank assembly 100 and the pump skid 200, while also reducing the floor space required. It should be noted that the storage tank 110 in the storage tank assembly 100 is preferably a horizontal storage tank.

[0044] In actual use, the liquefied natural gas in the storage tank assembly 100 enters the pump skid 200 through the pipeline assembly, and then is pressurized by the submersible pump in the pump skid 200 before entering the gas dispenser 310 to add liquefied natural gas to the liquefied gas truck 600 that needs to be refueled.

[0045] The liquefied natural gas (LNG) refueling station disclosed in this application integrates the storage tank assembly 100 and the pump skid 200 in the first module. The pump skid 200 is located on one side of the storage tank assembly 100, which reduces the overall footprint of the pump skid 200 and the storage tank assembly 100, shortens the length of the pipeline assembly between the pump skid 200 and the storage tank assembly 100, reduces the number of bends in the pipeline assembly, reduces the cold loss of LNG, lowers the flow resistance of the medium, improves the dynamic stability of the vehicle, and reduces the vehicle's operating costs. The refueling machine 310 is located inside the cofferdam 800, which shortens the connecting pipeline between the refueling machine 310, the pump skid 200, and the storage tank assembly 100, further reducing the overall footprint. The integration of the storage tank assembly 100 and the pump skid 200 allows the installation of the pipeline assembly between them to be carried out in the factory without on-site assembly, reducing on-site construction time, improving on-site construction efficiency, and improving product quality.

[0046] In addition, the gas station disclosed in this application embodiment can be transported separately for the first module and the second module, and the 800-meter cofferdam can be constructed on-site. Compared with the existing containerized liquefied natural gas gas station, the transportation is more flexible, the transportation cost is lower, the product cost is lower, and the operation and maintenance are more convenient. The existing containerized liquefied natural gas gas station is equipped with a container and a stainless steel cofferdam, which makes equipment maintenance inconvenient.

[0047] Furthermore, in some specific embodiments, the gas dispenser assembly 300 includes a gas dispenser 310, which is disposed on either side of the first module. The gas dispenser 310 may be disposed on the side closer to the pump skid 200, i.e. Figure 4 and Figure 6 The gas dispenser 310, located on the right side, can also be positioned on the side of the storage tank assembly 100 away from the pump skid 200, i.e. Figure 4 and Figure 6 The diagram shows the location of the gas dispenser 310 on the left. The gas dispenser 310 is positioned on both sides of the width of the first module, i.e., on both sides of the width of the cofferdam 800. In actual use, the gas dispenser 310 can also be placed on one side of the length of the cofferdam 800. The specific location can be determined based on the actual site conditions. The gas dispenser 310 can be placed close to the cofferdam 800 or at a predetermined distance from it.

[0048] Furthermore, in some specific embodiments, the gas dispenser assembly 300 includes at least two gas dispensers 310, each gas dispenser 310 being respectively disposed at both ends or both sides of the dike 800. It should be noted that the number of gas dispensers 310 may include two, three, or more. Figures 4-5 , Figures 8-9 As shown in the figure, the gas dispenser 310 includes two units, and the two gas dispensers 310 are respectively located at both ends of the first module, that is, at both ends of the length direction of the dike 800, so that one of the gas dispensers 310 is located close to the pump skid 200. In the above scheme, the liquid dispensing truck 600 can be parked at both ends of the first module, that is, the liquid dispensing truck is parked along the width direction of the dike 800, and the liquid unloading truck 500 can be parked along the length direction of the storage tank assembly 100, as detailed below. Figure 5 As shown in the diagram; or, the filling truck 600 can be parked along the length of the storage tank assembly 100, i.e., along the length of the dike 800, and the unloading truck 500 can be parked along the width of the storage tank assembly 100, i.e., along the width of the dike 800, as specifically shown in the diagram. Figure 9 As shown, the specific details can be determined based on the needs of the site.

[0049] Furthermore, in some specific embodiments, the gas dispenser assembly 300 includes at least four gas dispensers 310, each gas dispenser 310 being respectively disposed at one of the four corners of the dike 800. For example... Figure 6 and Figure 7 As shown in the figure, there are four gas dispensers 310, and the four gas dispensers 310 are respectively set at the four corners of the cofferdam 800. At this time, the liquid dispensing truck 600 can be parked along the length of the storage tank assembly 100, that is, along the length of the cofferdam 800, and the liquid unloading truck 500 can be parked along the width of the storage tank assembly 100, that is, along the width of the cofferdam 800.

[0050] Furthermore, in some specific embodiments, such as Figure 1 and Figure 2 As shown, the pump skid 200 includes a pump skid outer frame 210 and a pump sump assembly 220. The pump sump assembly 220 is detachably connected to the pump skid outer frame 210, specifically via bolts and nuts for easy assembly and disassembly. A detailed structural diagram of the pump skid outer frame 210 is shown below. Figure 3 As shown, the pump skid outer frame 210 has a rectangular structure. The side of the pump skid outer frame 210 facing the storage tank assembly 100 is an open structure, so that one end of the storage tank assembly 100 can be accommodated in the pump skid outer frame 210. In other words, the pump skid outer frame 210 surrounds one end of the storage tank 110. The liquid outlet pipe 111 of the storage tank 110 of the storage tank assembly 100 preferably extends from the side of the storage tank 110. The valve on the liquid outlet pipe 111 is preferably located inside the pump skid outer frame 210 to further shorten the pipeline and facilitate the installation and passage of the pipeline assembly.

[0051] To facilitate transportation and on-site assembly, the pump skid outer frame 210 is equipped with a lifting device 400, which is detachably installed on the pump skid outer frame 210. The pump pool assembly 220 is equipped with a hoisting part that cooperates with the lifting device 400. When the lifting device 400 is needed, it can be installed on the pump skid outer frame 210; when it is not needed, it can be removed. Specifically, during the transportation of the first module, the lifting device 400 can lift the pump pool assembly 220 to a preset height, and then connect and fix the pump pool assembly 220 to the pump skid outer frame 210, preferably with bolts, for easy transportation. During on-site installation and use, the pump pool assembly 220 is disassembled from the pump skid outer frame 210, and the lifting device 400 lowers the pump pool assembly 220 to the underground installation space. Then, the pump pool assembly 220 is connected and fixed to the pump skid outer frame 210, preferably with bolts. The pump pool assembly 220 is lowered below ground level, creating a height difference between the pump pool inlet and the outlet of the storage tank 110. This increases the static head of the liquid, ensuring that the gas dispenser 310 can continue to dispense liquid even when the storage tank 110 is at a low level. When maintenance or replacement of the pump pool assembly 220 is required, it can be lifted using the lifting equipment 400 for easy access.

[0052] Specifically, the pump pool assembly 220 includes a pump pool 221, a submersible pump, and a pump pool basket 222. The pump pool 221 is mounted on the pump pool basket 222, preferably connected by bolts. The pump pool basket 222 is detachably connected to the pump skid outer frame 210. Preferably, bolt fixing holes are provided at the four corners of the pump pool basket 222 to facilitate detachable connection with the pump skid outer frame 210 via bolts. The submersible pump is located inside the pump pool 221. The outlet pipe 111 of the storage tank assembly 100 is connected to the pump pool 221, and the outlet pipe of the pump pool 221 is connected to the gas dispenser 310. A lifting device is located on the pump pool 221, preferably on the pump pool cover of the pump pool 221. Specifically, the lifting device can use a lifting hole, lifting lug, or ring hook, etc. Figure 10 As shown, in some specific embodiments, the lifting device 400 includes a hand-push trolley 410 and a hand-operated hoist 420. The pump skid outer frame 210 is provided with a track 211. The hand-push trolley 410 is movably mounted on the track 211, and the hand-operated hoist 420 is detachably mounted on the hand-push trolley 410. The lower hook of the hand-operated hoist 420 is connected to the lifting part of the pump pool cover. By operating the hand-operated hoist 420, the pump pool 221 can be raised or lowered. The movable mounting of the hand-push trolley 410 on the track 211 facilitates the lifting of the pump pool 221 and the removal of the submersible pump, making the maintenance and replacement of the submersible pump easier.

[0053] Furthermore, in some specific embodiments, the second module also includes an unloading skid 900. The gas dispenser 310 and the unloading skid 900 share a base. The gas dispenser 310 and the unloading skid 900 are respectively connected to the base. The storage tank assembly 100 is provided with a connecting pipeline that can be detachably connected to the unloading skid 900. The unloading skid 900 is connected to the unloading truck 500 through a hose. Specifically, for example... Figure 11As shown, the unloading skid 900 includes an unloading liquid phase pipeline 920, a pressurizing liquid phase pipeline 910, a pressurizing gas phase pipeline 930, and a venting pipeline 940. The unloading liquid phase pipeline 920 connects the unloading truck 500 and the storage tank 110, used to transport the liquefied natural gas from the unloading truck 500 to the storage tank 110. The pressurizing liquid phase pipeline 910 connects the unloading truck 500 and the inlet of the pressurized vaporizer 130, and the pressurized gas phase pipeline 930 connects the unloading truck 500 and the outlet of the pressurized vaporizer 130, used to pressurize the unloading truck 500. The venting pipeline 940 is used to discharge residual pressure and residual gas from pipelines or equipment. A connecting pipe 950 is also provided between the unloading liquid phase pipeline 920 and the pressurized gas phase pipeline 930. In addition, the unloading skid 900 also includes valves installed on various pipelines. As shown in the figure, the unloading liquid phase pipeline 920, the pressurizing liquid phase pipeline 910, and the pressurizing gas phase pipeline 930 are connected to the unloading truck 500 via connecting hoses 911. A cryogenic breakaway valve 912 is installed between the unloading liquid phase pipeline 920, the pressurizing liquid phase pipeline 910, the pressurizing gas phase pipeline 930 and the connecting hose 911. A first shut-off valve 913 is installed on both the unloading liquid phase pipeline 910 and the pressurized gas phase pipeline 930. A safety valve 931 is installed between the unloading liquid phase pipeline 920 and the pressurized gas phase pipeline 930 and the venting pipeline 940. A second shut-off valve 914 is installed at the connection points of the unloading liquid phase pipeline 920, the pressurized liquid phase pipeline 910, the pressurized gas phase pipeline 930 and the venting pipeline 940. A check valve 921 is installed on the unloading liquid phase pipeline 920.

[0054] The unloading skid 900 is assembled at the factory and, after being transported to the site, can be directly connected to the storage tank assembly 100. When the unloading truck arrives at the site, it connects to the unloading skid 900 to unload the liquefied natural gas. Preferably, the unloading skid 900 is flange-connected to the storage tank assembly 100. This method facilitates disassembly and assembly, eliminates the need for welding, shortens construction time, reduces construction difficulty, and allows for reuse after disassembly. The gas dispenser 310 and the unloading skid 900 in the second module can be transported together. The unloading skid 900 can be located inside or outside the cofferdam 800.

[0055] To ensure that the unloading of liquefied natural gas (LNG) is not affected when adding LNG to the refueling truck 600, the positions of the refueling unit 310 and the unloading skid 900 must accommodate the stopping positions of both the refueling truck 600 and the unloading truck 500. Specifically, such as... Figure 5 and Figure 9 As shown in the figure, the gas dispenser 310 is located at both ends of the first module, and the unloading skid 900 is located on one side of the length direction of the cofferdam 800; as Figure 7 As shown in the figure, the gas dispenser 310 is located at the four corners of the cofferdam 800, and the unloading skid 900 is located on one side of the width direction of the cofferdam 800.

[0056] Furthermore, the second module can also integrate one or more of the air compressor, buffer tank, or explosion-proof control cabinet to further reduce the footprint of the liquefied natural gas refueling station. Here, integration means that the refueling unit 310 and at least one of the air compressor, buffer tank, or explosion-proof control cabinet can be located on the same base and transported together.

[0057] Furthermore, the storage tank assembly 100 includes a storage tank 110, an EAG heater 120, and a booster vaporizer 130. The EAG heater 120 and the booster vaporizer 130 are respectively connected to the storage tank 110 and are preferably disposed on the outer wall of the storage tank 110 to make full use of the outer space of the storage tank 110. Specifically, the storage tank 110 is provided with mounting brackets for installing the EAG heater 120 and the booster vaporizer 130. The EAG heater is provided with a safety venting line, and the venting branches of the storage tank assembly 100 and the pump skid 200 are respectively connected to the safety venting line. The EAG heater 120 is used to heat the cryogenic exhaust gas, which can reduce the accumulation of combustible gas. The booster vaporizer 130 is connected to the storage tank 110 to pressurize the storage tank 110. The booster vaporizer 130 can also be connected to the unloading truck 500 to provide power for unloading by the unloading truck 500. In the above solution, the EAG heater 120 and the booster vaporizer 130 are integrated into the storage tank 110. The whole unit can be prefabricated and tested in the factory, which can reduce the amount of on-site construction work, reduce costs, reduce the equipment footprint, and facilitate equipment pipeline connection.

[0058] Furthermore, such as Figure 5 , Figure 7 and Figure 9 As shown, in order to protect the gas dispenser 310 from wind and rain, in some specific embodiments, the liquefied natural gas refueling station also includes a gas dispenser canopy 700 disposed above the gas dispenser 310.

[0059] It should be noted that the various embodiments in this specification mainly describe the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.

[0060] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0061] In the description of the embodiments of this application, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application 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. Therefore, they should not be construed as limitations on the embodiments of this application.

[0062] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A liquefied natural gas (LNG) refueling station, characterized in that, include: The first module includes a tank assembly (100) and a pump skid (200), the pump skid (200) being located on one side of the tank assembly (100), and the tank assembly (100) being connected to the pump skid (200) via a pipeline assembly; The second module includes a gas dispenser assembly (300), which includes at least one gas dispenser (310) connected to the pump skid (200). The cofferdam (800) is provided, with both the first module and the second module located inside the cofferdam (800).

2. The liquefied natural gas refueling station as described in claim 1, characterized in that, The gas dispenser assembly (300) includes a gas dispenser (310) disposed on either side of the first module.

3. The liquefied natural gas refueling station as described in claim 1, characterized in that, The gas dispenser assembly (300) includes at least two gas dispensers (310), each of which is disposed at both ends or both sides of the first module.

4. The liquefied natural gas refueling station as described in claim 1, characterized in that, The gas dispenser assembly (300) includes at least four gas dispensers (310), each of which is located at one of the four corners of the dike (800).

5. The liquefied natural gas refueling station as described in claim 1, characterized in that, The pump skid (200) includes a pump skid frame (210) and a pump pool assembly (220), which is detachably connected to the pump skid frame (210).

6. The liquefied natural gas refueling station as described in claim 5, characterized in that, The pump skid outer frame (210) is provided with a lifting device (400), which is detachably installed on the pump skid outer frame (210). The pump pool assembly (220) is provided with a hoisting part that cooperates with the lifting device (400).

7. The liquefied natural gas refueling station as described in claim 6, characterized in that, The pump pool assembly (220) includes a pump pool (221), a submersible pump, and a pump pool basket (222). The pump pool (221) is located inside the pump pool basket (222). The pump pool basket (222) is detachably connected to the outer frame (210) of the pump skid. The submersible pump is located inside the pump pool (221). The outlet pipe (111) of the storage tank assembly (100) is connected to the pump pool (221). The outlet pipe of the pump pool (221) is connected to the gas dispenser (310). The hoisting unit is located in the pump pool (221).

8. The liquefied natural gas refueling station as described in any one of claims 1-7, characterized in that, The second module includes an unloading skid (900), and the storage tank assembly (100) is provided with a connecting pipeline that can be detachably connected to the unloading skid (900), and the unloading skid (900) can be connected to the unloading truck (500).

9. The liquefied natural gas refueling station as described in any one of claims 1-7, characterized in that, The storage tank assembly (100) includes a storage tank (110), an EAG heater (120), and a booster vaporizer (130), wherein the EAG heater (120) and the booster vaporizer (130) are respectively connected to the storage tank (110).

10. The liquefied natural gas refueling station as described in claim 9, characterized in that, The liquefied natural gas refueling station also includes a refueling canopy (700) located above the refueling machine (310).

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