LNG (Liquefied Natural Gas) skid-mounted gas filling device

Abstract

The utility model discloses a skid-mounted LNG (liquefied natural gas) filling device, which particularly relates to the technical field of LNG filling and comprises a storage tank, one side of the storage tank is fixedly communicated with a first gas pipe, one side of the first gas pipe is movably provided with a second gas pipe, and one end, far away from the first gas pipe, of the second gas pipe is fixedly communicated with a joint. A conveying assembly and an output assembly are arranged on the first gas pipe, the conveying assembly is located at the top of the output assembly, and the conveying assembly comprises a third gas pipe, a pressurization gasifier and a first valve. By opening the control valve on the pressurizing vaporizer, LNG in the LNG tank car can flow into the storage tank through the third gas pipe after being pressurized, the gas dispenser is responsible for filling the LNG into the LNG storage bottle of the car, when the LNG is input and output, the gas pressure is monitored through the pressure detector, the operation is simple, and the safety is high. The pressure state of gas during gas inlet and gas outlet is conveniently monitored, the safety performance is high, and the using effect is good.

Description

Technical Field

[0001] This utility model relates to the field of liquefied natural gas (LNG) refueling technology, and more specifically, to an LNG skid-mounted refueling device. Background Technology

[0002] Liquefied natural gas (LNG), primarily composed of methane, is widely recognized as the cleanest fossil fuel on Earth. Natural gas requires refueling equipment for use. Skid-mounted systems integrate functional components onto a single base, allowing for complete installation and relocation. However, most commercially available skid-mounted refueling units lack pressure regulation capabilities. This can easily lead to excessive pressure during natural gas delivery, causing transmission to halt and reducing efficiency. Consequently, this reduces work efficiency and increases time costs.

[0003] A search revealed that Chinese Patent CN211821723U discloses a stable, easily pressure-adjustable LNG skid-mounted refueling device. Through the coordinated use of connecting pipes, sealing doors, movable rods, stops, a first sealing ring, a handle, a second sealing ring, a fixing sleeve, and internal and external threads, the device achieves easy pressure adjustment, thus solving the problem of inconvenient pressure adjustment in general LNG skid-mounted refueling devices. This improves natural gas transmission efficiency, further enhancing work efficiency and making the device more convenient and worry-free for users, thereby bringing convenience to their work.

[0004] When the above-mentioned gas filling device is in use, natural gas enters the air-temperature vaporizer body through the inlet pipe, and natural gas is discharged through the outlet pipe after the control valve is opened. However, it is inconvenient to monitor the gas pressure during the inlet and outlet, which poses certain safety hazards and results 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 skid-mounted refueling device, 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 skid-mounted refueling device, comprising a storage tank, a first gas pipe fixedly connected to one side of the storage tank, a second gas pipe movably disposed on one side of the first gas pipe, a connector fixedly connected to the end of the second gas pipe away from the first gas pipe, a conveying component and an output component disposed on the first gas pipe, the conveying component being located on top of the output component, the conveying component comprising a third gas pipe, a booster vaporizer and a first valve, and the output component comprising a fourth gas pipe, a cryogenic pump, a refueling machine and a second valve.

[0007] Furthermore, the two ends of the third air pipe are fixedly connected to the first air pipe and the second air pipe, respectively, and the booster vaporizer and the first valve are both fixedly installed on the third air pipe.

[0008] Furthermore, the two ends of the fourth gas pipe are fixedly connected to the first gas pipe and the second gas pipe, respectively, and the cryogenic pump, the gas dispenser and the second valve are all fixedly installed on the fourth gas pipe.

[0009] Furthermore, a pressure detector is fixedly installed on the first trachea, and a pressure relief assembly is provided on one side of the pressure detector. The pressure relief assembly includes a fifth trachea, a second connecting plate, and a third valve.

[0010] As can be seen, in the above technical solution, gas pressure is monitored by a pressure detector.

[0011] Furthermore, one end of the fifth air pipe is fixedly connected to the first air pipe, and the other end of the fifth air pipe is fixedly connected to the second connecting plate, and the third valve is fixedly installed on the fifth air pipe.

[0012] Furthermore, a first connecting plate is fixedly connected to one side of the storage tank.

[0013] As can be seen, in the above technical solution, the first connecting plate is fixedly installed in a designated position by bolts, thereby supporting the storage tank.

[0014] Furthermore, a protective frame is fixedly connected to one side of the first connecting plate, and the protective frame is movably disposed on the outside of the storage tank.

[0015] As can be seen, in the above technical solution, the protective frame can protect the storage tank and prevent external sharp objects from damaging it.

[0016] The technical effects and advantages of this utility model are as follows:

[0017] 1. This utility model allows LNG in the LNG tanker to flow into the storage tank through the third gas pipe after being pressurized by opening the control valve on the booster vaporizer. The connector is inserted into the air inlet of the LNG storage cylinder of the vehicle, the first valve is closed and the second valve is opened, and the gas dispenser is responsible for adding LNG into the LNG storage cylinder of the vehicle. The gas pressure is monitored by a pressure detector when LNG is input and output. The operation is simple, it is convenient to monitor the gas pressure status during the intake and output, the safety performance is high and the use effect is good.

[0018] 2. This utility model fixes the external gas pipe to the second connecting plate with bolts. When the detected gas pressure is too high, the third valve is opened, and the LNG in the storage tank flows into the fifth gas pipe through the first gas pipe and finally into the external gas pipe to depressurize the storage tank until the pressure in the storage tank returns to a safe range. The structure is simple and easy to use. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a formal structural drawing of the present utility model;

[0022] Figure 3 This is a schematic diagram of the assembly structure of the storage tank and conveying assembly of this utility model;

[0023] Figure 4 This is a schematic diagram of the assembly structure of the pressure detector and output component of this utility model;

[0024] Figure 5 This is a cross-sectional view of the protective frame and a schematic diagram of the storage tank assembly structure of this utility model.

[0025] In the diagram: 1. Storage tank; 2. First gas pipe; 3. Second gas pipe; 4. Connector; 5. Delivery assembly; 6. Output assembly; 7. Pressure detector; 8. Pressure relief assembly; 9. Protective frame; 10. First connecting plate; 501. Third gas pipe; 502. Booster vaporizer; 503. First valve; 601. Fourth gas pipe; 602. Cryogenic pump; 603. Gas dispenser; 604. Second valve; 801. Fifth gas pipe; 802. Second connecting plate; 803. Third valve. Detailed Implementation

[0026] 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.

[0027] Refer to the instruction manual appendix Figure 1-5 This embodiment of an LNG skid-mounted refueling device includes a storage tank 1. A first gas pipe 2 is fixedly connected to one side of the storage tank 1. A second gas pipe 3 is movably connected to one side of the first gas pipe 2. A connector 4 is fixedly connected to the end of the second gas pipe 3 away from the first gas pipe 2. A conveying component 5 and an output component 6 are provided on the first gas pipe 2, and the conveying component 5 is located on top of the output component 6. The conveying component 5 includes a third gas pipe 501, a booster vaporizer 502, and a first valve 503. The output component 6 includes a fourth gas pipe 601, a cryogenic pump 602, a refueling machine 603, and a second valve 604.

[0028] Furthermore, the two ends of the third air pipe 501 are fixedly connected to the first air pipe 2 and the second air pipe 3 respectively. The booster vaporizer 502 and the first valve 503 are both fixedly installed on the third air pipe 501. The two ends of the fourth air pipe 601 are fixedly connected to the first air pipe 2 and the second air pipe 3 respectively. The cryogenic pump 602, the gas dispenser 603 and the second valve 604 are both fixedly installed on the fourth air pipe 601.

[0029] Furthermore, a pressure detector 7 is fixedly installed on the first air pipe 2. A pressure relief assembly 8 is provided on one side of the pressure detector 7. The pressure relief assembly 8 includes a fifth air pipe 801, a second connecting plate 802, and a third valve 803. One end of the fifth air pipe 801 is fixedly connected to the first air pipe 2, and the other end of the fifth air pipe 801 is fixedly connected to the second connecting plate 802. The third valve 803 is fixedly installed on the fifth air pipe 801.

[0030] The external gas pipe is fixed to the second connecting plate 802 with bolts. When the detected gas pressure is too high, the third valve 803 is opened, and the LNG in the storage tank 1 flows into the fifth gas pipe 801 through the first gas pipe 2, and finally into the external gas pipe to depressurize the storage tank 1 until the pressure in the storage tank 1 returns to the safe range. The structure is simple and easy to use.

[0031] Furthermore, a first connecting plate 10 is fixedly connected to one side of the storage tank 1, and a protective frame 9 is fixedly connected to one side of the first connecting plate 10. The protective frame 9 is movably disposed on the outside of the storage tank 1. The first connecting plate 10 is fixedly installed in a designated position by bolts, thereby supporting the storage tank 1. The protective frame 9 can protect the storage tank 1 and prevent external sharp objects from damaging the storage tank 1.

[0032] The usage method of this embodiment is as follows:

[0033] In use, connector 4 is inserted into the discharge end of the LNG tanker, the first valve 503 is opened and the second valve 604 is closed, and then the control valve on the booster vaporizer 502 is opened, so that the LNG in the LNG tanker, after being pressurized, can flow into the first gas pipe 2 through the third gas pipe 501, and finally into the storage tank 1 through the first gas pipe 2. When LNG needs to be added to the LNG storage cylinder of the vehicle, connector 4 is inserted into the inlet end of the LNG storage cylinder of the vehicle, the first valve 503 is closed and the second valve 604 is opened, and the LNG stored in the storage tank 1 is sent into the refueling machine 603 through the cryogenic pump 602. The refueling machine 603 is responsible for adding LNG to the LNG storage cylinder of the vehicle. When LNG is input and output, the gas pressure is monitored by the pressure detector 7. The operation is simple, it is convenient to monitor the gas pressure status during the intake and output, the safety performance is high, and the use effect is good.

[0034] 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.

[0035] 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 skid-mounted refueling device, comprising a storage tank (1), a first gas pipe (2) fixedly connected to one side of the storage tank (1), a second gas pipe (3) movably connected to one side of the first gas pipe (2), and a connector (4) fixedly connected to the end of the second gas pipe (3) away from the first gas pipe (2), characterized in that: The first air pipe (2) is provided with a delivery component (5) and an output component (6), and the delivery component (5) is located on top of the output component (6). The delivery component (5) includes a third air pipe (501), a booster vaporizer (502) and a first valve (503). The output component (6) includes a fourth air pipe (601), a cryogenic pump (602), a gas dispenser (603) and a second valve (604).

2. The LNG skid-mounted refueling device according to claim 1, characterized in that: The two ends of the third air pipe (501) are fixedly connected to the first air pipe (2) and the second air pipe (3) respectively, and the booster vaporizer (502) and the first valve (503) are both fixedly installed on the third air pipe (501).

3. The LNG skid-mounted refueling device according to claim 1, characterized in that: The two ends of the fourth gas pipe (601) are fixedly connected to the first gas pipe (2) and the second gas pipe (3) respectively. The cryogenic pump (602), the gas dispenser (603) and the second valve (604) are all fixedly installed on the fourth gas pipe (601).

4. The LNG skid-mounted refueling device according to claim 1, characterized in that: A pressure detector (7) is fixedly installed on the first air pipe (2). A pressure relief assembly (8) is provided on one side of the pressure detector (7). The pressure relief assembly (8) includes a fifth air pipe (801), a second connecting plate (802), and a third valve (803).

5. The LNG skid-mounted refueling device according to claim 4, characterized in that: One end of the fifth air pipe (801) is fixedly connected to the first air pipe (2), and the other end of the fifth air pipe (801) is fixedly connected to the second connecting plate (802). The third valve (803) is fixedly installed on the fifth air pipe (801).

6. The LNG skid-mounted refueling device according to claim 1, characterized in that: A first connecting plate (10) is fixedly connected to one side of the storage tank (1).

7. The LNG skid-mounted refueling device according to claim 6, characterized in that: A protective frame (9) is fixedly connected to one side of the first connecting plate (10), and the protective frame (9) is movably disposed on the outside of the storage tank (1).

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