A liquefied natural gas sampler

Abstract

The utility model discloses a liquefied natural gas sampler relates to natural gas sampling technical field, including outer jar subassembly, sealing element and inner jar subassembly, outer jar subassembly includes outer bottle and pressure gauge no.

Description

Technical Field

[0001] This utility model relates to the field of natural gas sampling technology, specifically to a liquefied natural gas sampler. Background Technology

[0002] Liquefied natural gas (LNG) is mainly composed of methane. LNG combustion produces very little air pollution and is widely recognized as the cleanest fossil fuel on Earth. It also releases a large amount of heat. LNG is natural gas that has been compressed and cooled to its boiling point to become liquid. It is a colorless, odorless, and non-toxic liquid, transported by special ships or tank trucks. It is regasified before use. A sampler is required when sampling LNG.

[0003] However, when using existing liquefied natural gas (LNG) samplers, if the sampler leaks due to quality issues after LNG is introduced, the LNG will turn into a gaseous state during the leak, making the pressure change inside the sampler not obvious, which poses a certain safety hazard. Furthermore, the sample solution can be shaken vigorously during transportation, causing the LNG to rub against the inner wall of the sampler, raising the temperature of the solution and increasing the danger of transportation, making it inconvenient for widespread use.

[0004] To address this problem, this application provides a liquefied natural gas sampler. Utility Model Content

[0005] The purpose of this invention is to provide a liquefied natural gas (LNG) sampler to address the problems mentioned in the background art, such as LNG turning into a gaseous state upon leakage, resulting in insignificant pressure changes inside the sampler, and the friction between the LNG and the inner wall of the sampler caused by vigorous shaking during transport, leading to increased temperature of the solution, posing certain safety hazards and increasing the danger of transportation, and resulting in poor performance.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A liquefied natural gas (LNG) sampler includes an outer tank assembly, a sealing assembly, and an inner tank assembly. The outer tank assembly includes an outer bottle and a pressure gauge, which is fixedly installed inside the outer bottle. The sealing assembly is disposed inside the outer tank assembly and the inner tank assembly. The sealing assembly includes a spring, a movable rod, and a sealing gasket. The movable rod is movably installed inside the spring, and the sealing gasket is fixedly installed inside the movable rod. The inner tank assembly is fixedly installed inside the outer tank assembly. The inner tank assembly includes an inner bottle and a baffle, which is fixedly installed inside the inner bottle.

[0007] A further improvement of this utility model is that: a nameplate is fixedly installed on the front of the outer bottle, a connecting plate is fixedly installed on the outside of the outer bottle, and a handle is rotatably installed inside the connecting plate.

[0008] A further improvement of this utility model is that: an air extraction device is fixedly installed on the back of the outer bottle, and a valve is fixedly installed inside the air extraction device.

[0009] A further improvement of this utility model is that: an inlet pipe is fixedly installed at one end of the inner bottle, an outlet pipe is fixedly installed at the other end of the inner bottle, and a pressure gauge is fixedly installed inside the inner bottle.

[0010] A further improvement of this utility model is that: a second valve is fixedly installed inside the inlet pipe, a third valve is fixedly installed inside the outlet pipe, and a block is fixedly connected inside both the inlet pipe and the outlet pipe; the movable rod is movably installed inside the block.

[0011] A further improvement of this utility model is that: a spring is provided inside both the inlet pipe and the outlet pipe, one end of the spring is movably connected to the outside of the block, and the other end of the spring is movably connected to the outside of the movable rod.

[0012] A further improvement of this utility model is that a push rod is movably installed inside the liquid inlet pipe, and the other end of the push rod is movably connected to the outside of the sealing gasket.

[0013] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows: 1. This utility model provides a liquefied natural gas sampler. Through the combined action of the outer bottle and pressure gauge, a vacuum is created between the outer and inner bottles by pumping air. In case of leakage, the gas will enter the space between the outer and inner bottles. The pressure gauge promptly alerts the staff to changes in pressure, reducing safety hazards.

[0014] 2. This utility model provides a liquefied natural gas sampler. Through the combined action of the inner bottle and the baffle, the baffle divides the inner bottle into multiple small spaces, which reduces the sloshing amplitude of the liquid and reduces friction during the transportation of the sample solution, thereby reducing the danger of transportation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the liquefied natural gas sampler of this utility model; Figure 2 This is a schematic diagram of the back structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of this utility model; Figure 4 This is a schematic diagram of the sealing assembly of this utility model. In the diagram: 1. Outer tank assembly; 2. Sealing assembly; 3. Inner tank assembly; 10. Outer bottle; 11. Nameplate; 12. Connecting plate; 13. Handle; 14. Pressure gauge one; 15. Vacuum pump; 20. Valve one; 21. Valve two; 22. Valve three; 23. Spring; 24. Push rod; 25. Block; 26. Movable rod; 27. Sealing gasket; 30. Inlet pipe; 31. Outlet pipe; 32. Pressure gauge two; 33. Inner bottle; 34. Baffle. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to embodiments: like Figure 1 and Figure 2 As shown, this utility model provides a liquefied natural gas (LNG) sampler, including an outer tank assembly 1, a sealing assembly 2, and an inner tank assembly 3. The sealing assembly 2 is disposed inside the outer tank assembly 1 and the inner tank assembly 3 to seal the LNG and prevent leakage. The inner tank assembly 3 is fixedly installed inside the outer tank assembly 1. The pressure of the LNG is monitored through the outer tank assembly 1 and the inner tank assembly 3, thereby improving safety during transportation.

[0017] like Figure 2 As shown, the outer tank assembly 1 includes an outer bottle 10 and a pressure gauge 14. The pressure gauge 14 is fixedly installed inside the outer bottle 10, and a pressure gauge 2 32 is fixedly installed inside the inner bottle 33. The pressure changes of liquefied natural gas are monitored through the pressure gauge 14 and the pressure gauge 2 32.

[0018] like Figure 1 As shown, a nameplate 11 is fixedly installed on the front of the outer bottle 10, which serves as a reminder of the orientation of the sampler when it is placed.

[0019] like Figure 2 As shown, a vacuum pump 15 is fixedly installed on the back of the outer bottle 10, and a valve 20 is fixedly installed inside the vacuum pump 15. The space between the outer bottle 10 and the inner bottle 33 is evacuated by the vacuum pump 15, so that the pressure gauge 14 can more clearly detect the pressure change in the vacuum. With the combined action of the outer bottle 10 and the pressure gauge 14, the staff can be alerted in time, reducing safety hazards.

[0020] like Figure 2 As shown, a connecting plate 12 is fixedly installed on the outside of the outer bottle 10. The connecting plate 12 allows the sampler to be placed on a flat surface without tipping over. A handle 13 is rotatably installed inside the connecting plate 12, which allows the staff to move the sampler easily.

[0021] like Figure 2 and Figure 3As shown, an inlet pipe 30 is fixedly installed at one end of the inner bottle 33, through which liquefied natural gas is introduced into the inner bottle 33. An outlet pipe 31 is fixedly installed at the other end of the inner bottle 33, through which liquefied natural gas is discharged from the inner bottle 33.

[0022] like Figure 3 and Figure 4 As shown, the sealing assembly 2 includes a spring 23, a movable rod 26, and a sealing gasket 27. The movable rod 26 is movably installed inside the spring 23, and the sealing gasket 27 is fixedly installed inside the movable rod 26. A plug 25 is fixedly connected inside both the inlet pipe 30 and the outlet pipe 31. The movable rod 26 is movably installed inside the plug 25. A spring 23 is installed inside both the inlet pipe 30 and the outlet pipe 31. One end of the spring 23 is movably connected to the outside of the plug 25, and the other end is movably connected to the outside of the movable rod 26. During introduction, liquefied natural gas applies pressure to the movable rod 26, causing the movable rod 26 to retract and compress the spring 23, preventing the sealing gasket 27 from contacting the inner bottle 33. After the liquefied natural gas enters the inner bottle 33, it applies pressure to the movable rod 26, causing the movable rod 26 to press against the sealing gasket 27, sealing the space between the inlet pipe 30 and the outlet pipe 31, and preventing liquefied natural gas leakage.

[0023] like Figure 4 As shown, a push rod 24 is movably installed inside the liquid inlet pipe 30. The other end of the push rod 24 is movably connected to the outside of the sealing gasket 27. When liquefied natural gas is discharged, valve 32 is opened, and then the push rod 24 is pressed down, so that the push rod 24 presses down the sealing gasket 27 and the movable rod 26, so that the liquefied natural gas is discharged through the liquid outlet pipe 31.

[0024] like Figure 2 and Figure 3 As shown, valve 21 is fixedly installed inside the inlet pipe 30 to seal the inlet pipe 30. Valve 22 is fixedly installed inside the outlet pipe 31 to seal the outlet pipe 31.

[0025] like Figure 3 As shown, the inner container assembly 3 includes an inner bottle 33 and a baffle 34. The baffle 34 is fixedly installed inside the inner bottle 33. The baffle 34 divides the inner bottle 33 into multiple small spaces, which reduces the sloshing amplitude of the liquid when transporting the sample solution. Through the combined action of the inner bottle 33 and the baffle 34, friction is reduced, and the danger of transportation is reduced.

[0026] The working principle of this liquefied natural gas sampler will be explained in detail below.

[0027] like Figure 1-4As shown, when using this liquefied natural gas (LNG) sampler, open valve 20 to evacuate the space between the outer cylinder 10 and the inner cylinder 33 using vacuum pump 15. Close valve 20 so that if LNG leaks, the vaporized natural gas will enter the space between the outer cylinder 10 and the inner cylinder 33, making the pressure gauge 14 more sensitive to pressure changes within the vacuum. The combined action of the outer cylinder 10 and pressure gauge 14 can promptly alert staff and reduce safety hazards. Then, open valve 21 to introduce LNG through the inlet pipe 30. The LNG applies pressure to the movable rod 26, causing it to retract and compress the spring 23, preventing the sealing gasket 27 from contacting the inner cylinder 33. The LNG then enters the inner cylinder 33. Finally, close valve 20. Door 21 seals the liquefied natural gas (LNG) through the valve while simultaneously applying pressure to the movable rod 26, causing it to press against the sealing gasket 27 and seal the space between the inlet pipe 30 and the outlet pipe 31, preventing LNG leakage. Since multiple baffles 34 are installed inside the inner bottle 33, dividing it into smaller spaces, the sloshing of the liquid is reduced during sample solution transportation. The combined action of the inner bottle 33 and the baffles 34 reduces friction and lowers the risk of transportation. To discharge the LNG, valve 32 is opened, and the top rod 24 is pressed down, causing it to press against the sealing gasket 27 and the movable rod 26, allowing the LNG to be discharged through the outlet pipe 31.

[0028] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A liquefied natural gas sampler, comprising an outer tank assembly (1), a sealing assembly (2), and an inner tank assembly (3), characterized in that: The outer can assembly (1) includes an outer bottle (10) and a pressure gauge (14). The pressure gauge (14) is fixedly installed inside the outer bottle (10). The sealing assembly (2) is disposed inside the outer can assembly (1) and the inner can assembly (3). The sealing assembly (2) includes a spring (23), a movable rod (26), and a sealing gasket (27). The movable rod (26) is movably installed inside the spring (23). The sealing gasket (27) is fixedly installed inside the movable rod (26). The inner can assembly (3) is fixedly installed inside the outer can assembly (1). The inner can assembly (3) includes an inner bottle (33) and a baffle (34). The baffle (34) is fixedly installed inside the inner bottle (33).

2. The liquefied natural gas sampler according to claim 1, characterized in that: A nameplate (11) is fixedly installed on the front of the outer bottle (10), a connecting plate (12) is fixedly installed on the outside of the outer bottle (10), and a handle (13) is rotatably installed inside the connecting plate (12).

3. A liquefied natural gas sampler according to claim 1, characterized in that: An air extraction device (15) is fixedly installed on the back of the outer bottle (10), and a valve (20) is fixedly installed inside the air extraction device (15).

4. A liquefied natural gas sampler according to claim 1, characterized in that: One end of the inner bottle (33) is fixedly installed with an inlet pipe (30), the other end of the inner bottle (33) is fixedly installed with an outlet pipe (31), and a pressure gauge (32) is fixedly installed inside the inner bottle (33).

5. A liquefied natural gas sampler according to claim 4, characterized in that: A valve 2 (21) is fixedly installed inside the inlet pipe (30), a valve 3 (22) is fixedly installed inside the outlet pipe (31), and a block (25) is fixedly connected inside both the inlet pipe (30) and the outlet pipe (31). The movable rod (26) is movably installed inside the block (25).

6. A liquefied natural gas sampler according to claim 4, characterized in that: Both the inlet pipe (30) and the outlet pipe (31) are equipped with springs (23). One end of the spring (23) is movably connected to the outside of the block (25), and the other end of the spring (23) is movably connected to the outside of the movable rod (26).

7. A liquefied natural gas sampler according to claim 4, characterized in that: A push rod (24) is movably installed inside the liquid inlet pipe (30), and the other end of the push rod (24) is movably connected to the outside of the sealing gasket (27).

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