A skid-mounted LNG filling station

Abstract

The utility model relates to a pry mounted LNG gas station belongs to gas station technical field, including base, the base top is provided with LNG storage tank, the base top is provided with low temperature air pump, the base top is provided with gas seller, the base inside is provided with the adjusting assembly that the number is four. That pry mounted LNG gas station, through the rotation screw rod carries out the coarse adjustment, the base height is primarily set, subsequently, through the heating plate to the low melting point alloy ingot in the metal box carries out the heating melting, the liquid alloy after heating flows under the action of gravity and fills the tiny gap between the screw rod and the hole thread, fills up, the outside cooling system supplies the cold water through the cold water pipe, and alloy liquid rapidly solidifies under the cooling of the cold water pipe, and the screw rod and the base hole inner wall are fused cast into a solid metal, the design can realize the flexible coarse adjustment of base height, utilizes the fusion casting characteristics of low melting point alloy, greatly strengthens the rigid connection and stability of whole.

Description

Technical Field

[0001] This utility model relates to the field of gas station technology, specifically a skid-mounted LNG gas station. Background Technology

[0002] Gas stations are dedicated facilities for refueling natural gas vehicles and are important infrastructure for promoting the application of clean energy in the transportation sector. Skid-mounted LNG refueling stations integrate all equipment, including storage tanks, pumps, refueling machines, and control systems, onto one or more movable skids. They offer significant advantages such as rapid construction, low investment, relocation, and small footprint, making them ideal for temporary or specific application scenarios such as bus stations, logistics parks, and ports. They are the perfect choice for rapid deployment and market expansion.

[0003] Utility model patent CN217109121U discloses a novel skid-mounted LNG refueling station, comprising an LNG tanker. The first liquid phase port of the LNG tanker is connected to the unloading liquid phase port, and the gas phase port is connected to the unloading gas phase port. The second liquid phase port of the LNG tanker is connected to the unloading pressurization port. The unloading pressurization port is sequentially connected to an unloading / storage tank pressurizer and an LNG cryogenic submersible pump. The unloading liquid phase port is connected to an LNG storage tank and an LNG cryogenic submersible pump. The outlet of the LNG cryogenic submersible pump is connected to both the LNG storage tank and the LNG storage tank. The outlet of the LNG storage tank is connected to the vaporization pressure regulating skid and the unloading gas phase port. By connecting the LNG tanker's liquid and gas phase ports to the pressurizer's liquid and gas phase ports respectively, and separately connecting the other liquid phase port to the LNG cryogenic submersible pump, the station overcomes the disadvantages of intermittent operation in the bypass regulation process. It features a high degree of automation, with each branch operating independently, allowing for uninterrupted and normal unloading operations, significantly improving LNG unloading efficiency.

[0004] However, due to their highly integrated modular design, the overall height of existing gas stations is usually fixed and cannot be adjusted. They cannot be freely raised or lowered according to uneven site foundations or the height of transport vehicle chassis, which brings inconvenience to on-site installation, commissioning, and transportation. Therefore, a skid-mounted LNG gas station is proposed to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a skid-mounted LNG refueling station with advantages such as adjustable base height, high stability, and adaptability to complex sites. It solves the problems of existing skid-mounted LNG refueling stations being difficult to level, having poor stability, and being unable to freely adjust to the height of the transport vehicle chassis when installed on uneven sites.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a skid-mounted LNG refueling station, comprising a base, an LNG storage tank disposed on the top of the base, a cryogenic gas pump disposed on the top of the base, a gas dispenser disposed on the top of the base, and four regulating components disposed inside the base;

[0007] The adjustment assembly includes a metal box fixedly connected to the top of the base, a low-melting-point alloy ingot inside the metal box, a heating plate fixedly installed on the surface of the metal box, four holes inside the base, threads on the inner walls of the four holes, threaded rods threaded into the four holes, annular grooves inside the four holes, sealing rings fixedly installed in the four annular grooves, and four spiral channels inside the base, each with a cold water pipe fixedly installed inside.

[0008] Furthermore, the four metal boxes are respectively disposed above the four holes, and a support base is rotatably installed at the bottom of the threaded rod. The threaded rod extends from the top surface of the support base through the holes and the inside of the metal boxes to the top of the heating plate.

[0009] Furthermore, the bottom of the metal box has an opening that communicates with the top of the hole, the low melting point alloy ingot covers the surface of the threaded rod, and the inner wall of the sealing ring is in contact with the surface of the threaded rod.

[0010] Furthermore, the inlet end of the cold water pipe extends from the outside to the inside of the base, the outlet end of the cold water pipe extends from the inside to the outside of the base, and the outlet end is located below the inlet end.

[0011] Furthermore, the spiral channel is tightly wound around the outside of the hole in a spiral shape, and the spiral axis of the spiral channel is coaxial with the axis of the hole. The four adjustment components are respectively set in the four corner areas of the base.

[0012] Furthermore, a level is fixedly installed at the bottom of the base, and the level is located at the center of the four adjustment components. The level monitors the horizontal status of the base in real time.

[0013] Furthermore, a groove is provided inside the base, and slide rails are fixedly installed on the inner walls of both sides of the groove. Sliding blocks are slidably connected inside the two slide rails, and mounting plates are fixedly installed on opposite ends of the two sliding blocks.

[0014] Furthermore, the inlet of the cryogenic pump is connected to the outlet of the LNG storage tank via a first pipe, and the outlet of the cryogenic pump is connected to the inlet of the gas dispenser via a second pipe, with a shut-off valve fixedly installed on the surface of the second pipe.

[0015] Compared with the prior art, this utility model provides a skid-mounted LNG refueling station, which has the following advantages:

[0016] 1. This skid-mounted LNG refueling station first uses a rotating threaded rod for coarse adjustment to initially set the base height. Then, a heating plate heats and melts a low-melting-point alloy ingot inside a metal tank. The heated liquid alloy flows into and fills the tiny gap between the threaded rod and the inner thread of the hole under gravity. After filling, an external cooling system supplies cold water through a cold water pipe. The alloy liquid solidifies rapidly under the cooling of the cold water pipe, fusing the threaded rod and the inner wall of the base hole into a solid metal, thus achieving final locking and rigid fixation of the adjusted height. This design allows for flexible coarse adjustment of the base height and greatly enhances the overall rigid connection and stability by utilizing the casting characteristics of the low-melting-point alloy.

[0017] 2. This skid-mounted LNG refueling station, through the cooperation of slide rails and sliding blocks, allows the mounting plate to be smoothly pulled and moved, thus providing an operable platform for the installation of other accessories and overall maintenance. The level instrument monitors the overall level status of the base in real time, and its feedback data is the direct basis for adjusting the height of the components. This design effectively improves the adaptability of the equipment to complex sites, thereby ensuring the ultra-high stability and reliability of the skid-mounted LNG refueling station in long-term operation. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the structure of this utility model;

[0019] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 This is a schematic diagram of the cold water pipe of this utility model;

[0021] Figure 4 This is a three-dimensional view of the LNG storage tank structure of this utility model.

[0022] In the diagram: 1. Base; 2. LNG storage tank; 3. Cryogenic gas pump; 4. Gas dispenser; 5. Adjustment assembly; 6. Metal box; 7. Low melting point alloy ingot; 8. Heating plate; 9. Threaded rod; 10. Hole; 11. Annular groove; 12. Sealing ring; 13. Spiral channel; 14. Cold water pipe; 15. Level; 16. Slide rail; 17. Mounting plate; 18. Shut-off valve. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1 to 4 In this embodiment, a skid-mounted LNG refueling station includes a base 1, an LNG storage tank 2 on the top of the base 1, a cryogenic gas pump 3 on the top of the base 1, a gas dispenser 4 on the top of the base 1, and four regulating components 5 inside the base 1.

[0025] Specifically, the adjustment component 5 includes a metal box 6 fixedly connected to the top of the base 1, a low melting point alloy ingot 7 inside the metal box 6, a heating plate 8 fixedly installed on the surface of the metal box 6, four holes 10 inside the base 1, threads on the inner walls of the four holes 10, threaded rods 9 threadedly connected inside the four holes 10, annular grooves 11 inside the four holes 10, sealing rings 12 fixedly installed inside the four annular grooves 11, and four spiral channels 13 inside the base 1, cold water pipes 14 fixedly installed inside the four spiral channels 13.

[0026] First, the height of the base 1 is initially set by rotating the four threaded rods 9 for coarse adjustment. Then, the heating plate 8 is activated to heat the low melting point alloy ingot 7 in the metal box 6, melting it into a liquid alloy. Under the action of gravity, the liquid alloy flows into and fills the gap between the threaded rods 9 and the internal threads of the hole 10. Subsequently, cold water is supplied to the cold water pipe 14 through the external cooling system. The cold water in the cold water pipe 14 carries away the heat from the liquid alloy through cold conduction, causing the liquid alloy to cool and solidify rapidly, thus fusing the threaded rods 9 and the base 1 into a solid whole, achieving the final locking and rigid fixation of the height.

[0027] It should be noted that the sealing ring 12 utilizes its elastic deformation capability to form an effective dynamic sealing barrier, which can effectively prevent the leakage of liquid alloy.

[0028] Specifically, four metal boxes 6 are respectively set above four holes 10, and a support is rotatably installed at the bottom of the threaded rod 9. The threaded rod 9 extends from the top surface of the support through the holes 10 and the inside of the metal boxes 6 to the top of the heating plate 8.

[0029] The main function of the support base is to provide a stable and rotatable bottom support for the threaded rod 9. The metal box 6 is made of metal, and its main function is to utilize the excellent thermal conductivity of metal to quickly and evenly conduct the heat generated by the heating plate 8 to the low melting point alloy ingot 7 inside, so that it can be quickly heated and melted.

[0030] Specifically, the bottom of the metal box 6 has an opening that communicates with the top of the hole 10. The low melting point alloy ingot 7 covers the surface of the threaded rod 9, and the inner wall of the sealing ring 12 is in contact with the surface of the threaded rod 9.

[0031] Specifically, the inlet end of the cold water pipe 14 extends from the outside to the inside of the base 1, and the outlet end of the cold water pipe 14 extends from the inside to the outside of the base 1, with the outlet end located below the inlet end.

[0032] Cold water flows in from the inlet end of the cold water pipe 14, flows from top to bottom in the spiral channel 13, and finally flows to the outlet end of the cold water pipe 14, thus being discharged to the outside of the base 1, completing the water circulation.

[0033] Specifically, the spiral channel 13 is tightly wound around the outside of the hole 10 in a spiral shape, and the spiral axis of the spiral channel 13 is coaxial with the axis of the hole 10. The four adjustment components 5 are respectively set in the four corner areas of the base 1.

[0034] Please see Figure 1 In this embodiment, a level 15 is fixedly installed at the bottom of the base 1. The level 15 is located at the center of the four adjustment components 5 and monitors the horizontal state of the base 1 in real time.

[0035] During the process of coarse or fine adjustment of the height of the base 1 through the four adjustment components 5, the operator can rotate one or more threaded rods 9 in a targeted manner according to the level status information fed back by the level instrument 15, thereby precisely adjusting the height of each corner of the base 1, and ultimately ensuring that the entire LNG refueling station is in a strictly level working state, providing a guarantee for the safe and stable operation of the equipment.

[0036] Please see Figure 1 In this embodiment, a groove is provided inside the base 1, and slide rails 16 are fixedly installed on the inner walls of both sides of the groove. Sliding blocks are slidably connected inside the two slide rails 16, and mounting plates 17 are fixedly installed on opposite ends of the two sliding blocks.

[0037] When maintenance, repair or installation of other accessories is required, the operator can pull the mounting plate 17 out of the base 1 along the slide rail 16 for use.

[0038] Please see Figure 1In this embodiment, the inlet of the cryogenic pump 3 is connected to the outlet of the LNG storage tank 2 via a first pipe, and the outlet of the cryogenic pump 3 is connected to the inlet of the gas vending machine 4 via a second pipe. A shut-off valve 18 is fixedly installed on the surface of the second pipe.

[0039] The first pipeline transports the liquefied natural gas in the LNG storage tank 2 to the cryogenic pump 3. After being pressurized by the cryogenic pump 3, it is transported to the gas dispenser 4 through the second pipeline for refueling. The shut-off valve 18 is used to switch the flow of fluid. When the gas dispenser 4 needs to be isolated during equipment maintenance, emergency, or other situations, closing the shut-off valve 18 can quickly block the flow of liquefied natural gas, ensuring the safety of local operations and effectively preventing media leakage.

[0040] The working principle of the above embodiments is as follows:

[0041] First, the base 1 is initially set with a rough adjustment by rotating the four threaded rods 9. Then, the heating plate 8 is activated to continuously heat until the low-melting-point alloy ingot 7 in the metal box 6 melts into a liquid alloy. Under the action of gravity, the liquid alloy flows into and fills the gap between the threaded rods 9 and the internal threads of the hole 10. After the liquid alloy fills the gap, cold water is supplied to the cold water pipe 14 through the external cooling system. The cold water in the cold water pipe 14 carries away the heat from the liquid alloy through cold conduction, causing the liquid alloy to cool and solidify rapidly, thus fusing the threaded rods 9 and the base 1 into a solid whole, achieving the final locking and rigid fixation of the height.

[0042] When the height of the base 1 needs to be adjusted again, simply restart the heating plate 8 to heat the fixed low melting point alloy ingot 7, so that it melts back into a liquid alloy, thereby releasing the rigid fixation between the threaded rod 9 and the base 1. At this time, the threaded rod 9 can be rotated again to adjust the height.

[0043] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that achieves the desired beneficial effect can be implemented. Furthermore, all electrical components in this embodiment are electrically connected to the main controller and power supply. The main controller can be a conventional, known device such as a computer that performs control functions. Those skilled in the art can control the electrical components through simple programming, and the existing disclosed power connection technologies are common knowledge in the field. Therefore, this embodiment will not elaborate further on their specific structural composition and working principles.

[0044] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to 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 application.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A skid-mounted LNG refueling station, comprising a base (1), characterized in that: An LNG storage tank (2) is installed on the top of the base (1), a cryogenic gas pump (3) is installed on the top of the base (1), a gas dispenser (4) is installed on the top of the base (1), and four adjustment components (5) are installed inside the base (1). The adjustment component (5) includes a metal box (6) fixedly connected to the top of the base (1). The metal box (6) contains a low melting point alloy ingot (7). A heating plate (8) is fixedly installed on the surface of the metal box (6). The base (1) has four holes (10) inside. The inner walls of the four holes (10) are threaded. The four holes (10) are threaded with threaded rods (9). The four holes (10) have annular grooves (11) inside. The four annular grooves (11) are fixedly installed with sealing rings (12). The base (1) has four spiral channels (13) inside. The four spiral channels (13) are fixedly installed with cold water pipes (14).

2. The skid-mounted LNG refueling station according to claim 1, characterized in that: The four metal boxes (6) are respectively set above the four holes (10). The bottom of the threaded rod (9) is rotatably mounted with a support seat. The threaded rod (9) extends from the top surface of the support seat through the holes (10) and the inside of the metal boxes (6) to the top of the heating plate (8).

3. A skid-mounted LNG refueling station according to claim 1, characterized in that: The metal box (6) has an opening at the bottom, which is connected to the top of the hole (10). The low melting point alloy ingot (7) covers the surface of the threaded rod (9), and the inner wall of the sealing ring (12) is in contact with the surface of the threaded rod (9).

4. A skid-mounted LNG refueling station according to claim 1, characterized in that: The inlet end of the cold water pipe (14) extends from the outside to the inside of the base (1), and the outlet end of the cold water pipe (14) extends from the inside to the outside of the base (1). The outlet end is located below the inlet end.

5. A skid-mounted LNG refueling station according to claim 1, characterized in that: The spiral channel (13) is tightly wound around the outside of the hole (10) in a spiral shape, and the spiral axis of the spiral channel (13) is coaxial with the axis of the hole (10). The four adjustment components (5) are respectively set in the four corner areas of the base (1).

6. A skid-mounted LNG refueling station according to claim 1, characterized in that: A level (15) is fixedly installed at the bottom of the base (1). The level (15) is located at the center of the four adjustment components (5). The level (15) monitors the horizontal state of the base (1) in real time.

7. A skid-mounted LNG refueling station according to claim 1, characterized in that: The base (1) has a groove inside, and slide rails (16) are fixedly installed on the inner walls of both sides of the groove. Sliding blocks are slidably connected inside the two slide rails (16), and mounting plates (17) are fixedly installed on one end of the two sliding blocks opposite to each other.

8. A skid-mounted LNG refueling station according to claim 1, characterized in that: The inlet of the cryogenic pump (3) is connected to the outlet of the LNG storage tank (2) via a first pipe, and the outlet of the cryogenic pump (3) is connected to the inlet of the gas vending machine (4) via a second pipe. A shut-off valve (18) is fixedly installed on the surface of the second pipe.

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