LNG (Liquefied Natural Gas) filling device

Abstract

The utility model discloses an LNG (Liquefied Natural Gas) filling device, which particularly relates to the field of fossil energy filling equipment and comprises a cooling water tank, a refrigerator is arranged in the cooling water tank, an LNG filling tank is erected in the cooling water tank, one side of the cooling water tank is fixedly connected with a support frame, and a cooling water supply unit is arranged on the support frame. The cooling water supply unit is connected with the cooling water tank and rotationally connected with a water supply pipe, the water supply pipe is also rotationally connected to the supporting frame, one end of the water supply pipe fixedly communicates with a water collecting barrel, the bottom of the water collecting barrel is fixedly connected with a flow dividing cover, and the flow dividing cover is arranged at the top of the LNG filling tank. The cooling water supply unit is provided with a water driving assembly used for driving the flow dividing cover to rotate. The LNG storage tank solves the technical problem that when the external temperature of the LNG storage tank is high, the temperature of the surface layer of the tank is also increased, so that liquefied natural gas is easily changed into a gas state from a liquid state, and potential safety hazards are easily caused.

Description

Technical Field

[0001] This utility model relates to the field of fossil fuel refueling equipment, and more specifically, to an LNG refueling device. Background Technology

[0002] An LNG refueling unit is a device used for refueling liquefied natural gas. It is typically used in LNG storage tanks, LNG containers, or LNG refueling stations. LNG refueling units can convert liquefied natural gas into a gaseous state for use. They are commonly used in fuel supply and transportation sectors. They are characterized by safety, efficiency, and ease of operation, and can meet the LNG refueling needs of different locations.

[0003] Currently, LNG storage tanks are the main storage containers in LNG refueling systems. These tanks must withstand required temperature and pressure conditions. LNG storage tanks typically employ a double-layer structure, with insulation material filling the space between the layers. The inner tank is made of stainless steel or aluminum alloy, which have good low-temperature toughness, and can also be constructed using prestressed concrete. However, due to the requirements of natural gas storage conditions, when the external temperature of the LNG storage tank is high, the surface temperature of the tank also rises accordingly. Therefore, liquefied natural gas can easily change from a liquid to a gaseous state, which can easily lead to safety hazards. Utility Model Content

[0004] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an LNG refueling device, including a cooling water tank, a built-in cooler in the cooling water tank, an LNG refueling tank mounted inside the cooling water tank, a support frame fixedly connected to one side of the cooling water tank, a cooling water supply unit mounted on the support frame and connected to the cooling water tank, a water supply pipe rotatably connected to the cooling water supply unit, the water supply pipe also rotatably connected to the support frame, a water collection cylinder fixedly connected to one end of the water supply pipe, a flow divider fixedly connected to the bottom of the water collection cylinder, the flow divider being positioned at the top of the LNG refueling tank, and a water drive assembly for driving the flow divider to rotate on the cooling water supply unit.

[0006] In a preferred embodiment, the cooling water supply unit includes a water pump, which is fixedly connected to the support frame. The water pump has an input pipe at its input end and an output pipe at its output end. The input pipe is fixedly connected to the cooling water tank.

[0007] In a preferred embodiment, the output pipe is provided with a rotary joint, and the water supply pipe is rotatably connected to the output pipe through the rotary joint.

[0008] In a preferred embodiment, the bottom of the water collecting cylinder is provided with a water inlet, and a fixing block is fixedly connected inside the water inlet.

[0009] In a preferred embodiment, the diversion hood is provided with multiple diversion grooves, which are distributed in a ring on the outer surface of the diversion hood. The diversion grooves are connected to the water collection cylinder, and the bottom of the diversion hood is hollow.

[0010] In a preferred embodiment, the water-driven assembly includes a shaft rotatably connected inside the output pipe, and the shaft passes sequentially through the rotary joint and the water supply pipe and is fixedly connected to the fixed block. A blade is fixedly connected to the shaft and is disposed inside the output pipe.

[0011] In a preferred embodiment, an external water pipe is fixedly connected to the cooling water tank, and a level gauge for detecting the liquid level is installed on the cooling water tank.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. This utility model discloses an LNG refueling device. By installing a diversion hood on the top of the LNG refueling tank and supplying spray water to the LNG refueling tank through a cooling water supply unit, the pressure of the spray water can drive the diversion hood to rotate through a water-driven component. During the rotation of the diversion hood, the cooling water can flow out through multiple diversion channels. In this way, the cooling water passing through the diversion hood can be evenly sprayed on the top of the LNG refueling tank, thereby covering and cooling the LNG refueling tank, improving the cooling effect, and ensuring the safety of LNG storage and refueling in the LNG refueling tank.

[0014] 2. The LNG refueling device of this utility model has a cooling water tank installed at the bottom of the LNG refueling tank, and a cooler is installed in the cooling water tank. The cooling water tank facilitates the collection of cooling water, and the cooler treats the cooling water at low temperature. The cooling water is then extracted and used by the cooling water supply unit. In this way, the cooling water of the LNG refueling tank can be low temperature, thereby improving the reliability of low temperature control on the surface of the LNG refueling tank. Attached Figure Description

[0015] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] Figure 1This is a schematic diagram of the planar structure of an LNG refueling device according to the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the diversion hood and water collection cylinder of this utility model.

[0018] Figure 3 This utility model Figure 2 A bottom view.

[0019] Figure 4 This utility model Figure 1 Enlarged view of section A.

[0020] The attached diagram is labeled as follows: 1. Cooling water tank; 2. LNG refueling tank; 3. Support frame; 4. Water supply pipe; 5. Water collection cylinder; 51. Water inlet; 52. Fixing block; 6. Diverter shroud; 61. Diverter channel; 7. Water drive assembly; 71. Shaft; 72. Blade; 8. Water pump; 9. Input pipe; 10. Output pipe; 11. Refrigerator; 12. External water pipe; 13. Level gauge; 14. Rotary joint. Detailed Implementation

[0021] 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.

[0022] See also Figures 1-4This utility model provides an LNG refueling device, including a cooling water tank 1, which houses a chiller 11. The chiller 11 can be purchased directly from the market, and its principle and structure will not be described in detail here. The use of the chiller 11 requires electrical control via a controller. An LNG refueling tank 2 is mounted inside the cooling water tank 1. The LNG refueling tank 2 can be used in conjunction with other LNG refueling equipment such as a refueling gun. A support frame 3 is fixedly connected to one side of the cooling water tank 1, and a cooling water supply unit is installed on the support frame 3. The cooling water supply unit is connected to the cooling water tank 1. A water supply pipe 4 is rotatably connected to the cooling water supply unit, and the water supply pipe 4 is also rotatably connected to the support frame 3. One end of the water supply pipe 4 is fixedly connected to a water collection cylinder 5. A diversion hood 6 is fixedly connected to the bottom of the water collection cylinder 5. The diversion hood 6 can be used to disperse and spray cooling water to cover the surface of the LNG refueling tank 2, so as to ensure the reliability of the low temperature of the surface of the LNG refueling tank 2. The diversion hood 6 is set at the top of the LNG refueling tank 2. A water drive assembly 7 for driving the diversion hood 6 to rotate is provided on the cooling water supply unit.

[0023] The cooling water supply unit includes a water pump 8, which is fixedly connected to the support frame 3. The input end of the water pump 8 is provided with an input pipe 9, and the output end of the water pump 8 is provided with an output pipe 10. The input pipe 9 is fixedly connected to the cooling water tank 1. The water pump 8 can draw cooling water from the cooling water tank 1 through the input pipe 9 and then output the cooling water through the output pipe 10. The cooling water falls from the top of the LNG refueling tank 2 to cover and cool it down, which can avoid the danger of high ambient temperature causing storage and refueling of LNG in the LNG refueling tank 2.

[0024] A rotary joint 14 is provided on the output pipe 10. The water supply pipe 4 is rotatably connected to the output pipe 10 through the rotary joint 14. The rotary joint 14 is an existing technical accessory and can be purchased directly. The rotary joint 14 enables the water supply pipe 4 to have a rotary sealing property for the flow of cooling water.

[0025] The bottom of the water collection cylinder 5 is provided with a water inlet 51, and a fixing block 52 is fixedly connected inside the water inlet 51. The cooling water passing through the water supply pipe 4 can be pre-stored in the water collection cylinder 5 through the water inlet 51. Since the bottom of the water collection cylinder 5 is open, the cooling water in the water collection cylinder 5 can be diverted through the diverter 6.

[0026] The water-driven assembly 7 includes a shaft 71, which is rotatably connected to the output pipe 10. The shaft 71 passes through the rotary joint 14 and the water supply pipe 4 in sequence and is fixedly connected to the fixing block 52. A blade 72 is fixedly connected to the shaft 71 and is located inside the output pipe 10. The blade 72 can drive the shaft 71 to rotate as the cooling water passes through the output pipe 10. Since the shaft 71 is connected to the fixing block 52 on the water collecting cylinder 5, the shaft 71 can drive the diverter 6 to rotate through the water collecting cylinder 5, so that the cooling water can be sprayed in a rotating manner.

[0027] An external water pipe 12 is fixedly connected to the cooling water tank 1. A level gauge 13 for detecting the liquid level is installed on the cooling water tank 1. The level gauge 13 is located on the outside of the cooling water tank 1, and the detection end extends into the cooling water tank 1. In this application, the external water pipe 12 can be connected to an external cooling water supply system. The cooling water supply system can pump cooling water into the cooling water tank 1 through the external water pipe 12. The cooling water supply system can be electrically connected to the level gauge 13 through a controller. When the level gauge 13 detects that the cooling water in the cooling water tank 1 is lower than a certain capacity, the controller can send a command to control the cooling water supply system to replenish the cooling water in the cooling water tank 1.

[0028] In use, this invention pre-stores cooling water in the cooling water tank 1 and uses a chiller 11 to cool the water at a low temperature. The water pump 8 then draws the cooling water from the tank 1 and outputs it through the output pipe 10 to the supply pipe 4. During this process, the cooling water can pass through the blades 72 in the output pipe 10 and rotate, causing the shaft 71 to rotate the diversion shroud 6 at the bottom of the water collecting cylinder 5. Because the cooling water flowing in the supply pipe 4 can enter the water collecting cylinder 5, and because the water collecting cylinder 5 is connected to multiple diversion channels 61, the cooling water can flow within the inclined diversion channels 61. Since the diversion shroud 6 can rotate, the cooling water can be evenly sprayed onto the top of the LNG refueling tank 2, ensuring uniform water distribution on the surface of the LNG refueling tank 2. This effectively controls the surface temperature of the LNG refueling tank 2, preventing the liquefied natural gas from changing from a liquid to a gaseous state due to increased surface temperature. Therefore, it reduces safety hazards during the storage and refueling of the LNG refueling tank 2.

Claims

1. An LNG refueling device, characterized in that: The system includes a cooling water tank (1) with a built-in cooler (11) and an LNG refueling tank (2) mounted inside the cooling water tank (1). A support frame (3) is fixedly connected to one side of the cooling water tank (1). A cooling water supply unit is provided on the support frame (3) and is connected to the cooling water tank (1). A water supply pipe (4) is rotatably connected to the cooling water supply unit and is also rotatably connected to the support frame (3). One end of the water supply pipe (4) is fixedly connected to a water collection cylinder (5). A diversion hood (6) is fixedly connected to the bottom of the water collection cylinder (5). The diversion hood (6) is located at the top of the LNG refueling tank (2). A water drive assembly (7) for driving the diversion hood (6) to rotate is provided on the cooling water supply unit.

2. The LNG refueling device according to claim 1, characterized in that: The cooling water supply unit includes a water pump (8), which is fixedly connected to the support frame (3). The input end of the water pump (8) is provided with an input pipe (9), and the output end of the water pump (8) is provided with an output pipe (10). The input pipe (9) is fixedly connected to the cooling water tank (1).

3. An LNG refueling device according to claim 2, characterized in that: A rotary joint (14) is provided on the output pipe (10), and the water supply pipe (4) is rotatably connected to the output pipe (10) through the rotary joint (14).

4. An LNG refueling device according to claim 3, characterized in that: The bottom of the water collection cylinder (5) is provided with a water inlet (51), and a fixing block (52) is fixedly connected inside the water inlet (51).

5. An LNG refueling device according to claim 4, characterized in that: The diversion hood (6) has multiple diversion grooves (61) and the multiple diversion grooves (61) are distributed in a ring on the outer surface of the diversion hood (6). The diversion grooves (61) are connected to the water collection cylinder (5). The bottom of the diversion hood (6) is hollow.

6. An LNG refueling device according to claim 5, characterized in that: The water-driven assembly (7) includes a shaft (71) which is rotatably connected inside the output pipe (10). The shaft (71) passes through the rotary joint (14) and the water supply pipe (4) in sequence and is fixedly connected to the fixing block (52). A blade (72) is fixedly connected to the shaft (71) and is disposed inside the output pipe (10).

7. An LNG refueling device according to claim 1, characterized in that: An external water pipe (12) is fixedly connected to the cooling water tank (1), and a level gauge (13) for detecting the liquid level is installed on the cooling water tank (1).

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