Liquefied natural gas sampler

Abstract

The utility model discloses a liquefied natural gas sampler, which belongs to the technical field of natural gas sampling, and comprises a fixed shell, the bottom of the fixed shell is fixedly connected with a fixed plate, the bottom of the fixed plate is fixedly connected with a liquid storage pipe, and the outer wall of the liquid storage pipe is fixedly connected with a pressure gauge. Through mutual cooperation of a fixed shell, a liquid storage pipe, a pressure gauge, an electric telescopic rod, a gas outlet valve, a partition plate, a gas outlet pipe, a connecting pipe, a dip pipe, a liquid inlet and a protective pipe, protection of the device and guiding of liquid are achieved, and through arrangement of the connecting pipe and the gas outlet pipe, in the natural gas suction process of the device, the natural gas can be sucked conveniently. By means of the structure, natural gas in the liquid storage pipe can be partially guided, so that the situation that the pressure in the liquid storage pipe is reduced in the vaporization process of the natural gas in the liquid storage pipe can be avoided, then damage is avoided, meanwhile, the interior of the fixing shell is isolated into a small space through the partition plate, and therefore waste of the natural gas is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of natural gas sampling, and in particular relates to a liquefied natural gas sampler. Background Art

[0002] A liquefied natural gas sampler is a device used to take samples from LNG storage and delivery systems for analysis, testing and monitoring;

[0003] However, when sampling liquefied natural gas, since liquefied natural gas is usually under high pressure, after sampling the liquefied natural gas, the natural gas inside the sampler may cause pressure to rise in the closed system, increasing the risk of explosion or leakage. Therefore, when people use the sampler to take samples, they usually vent the gas to avoid excessive internal gas pressure and avoid safety accidents. However, during the venting process, the staff usually releases the natural gas from the liquid storage tank set inside the sampler. During the venting process, due to manual operation, too much natural gas may be released, resulting in a waste of resources. At the same time, when the staff is close to the released natural gas, it may also cause safety accidents.

[0004] In order to solve the above problems, this application proposes a liquefied natural gas sampler. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes a liquefied natural gas sampler to overcome the above technical problems existing in the existing related technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A liquefied natural gas sampler comprises a fixed shell, a fixed plate is fixedly connected to the bottom of the fixed shell, a liquid storage tube is fixedly connected to the bottom of the fixed plate, a pressure gauge is fixedly connected to the outer wall of the liquid storage tube, an electric telescopic rod is fixedly connected to the inner top wall of the fixed shell, a partition is fixedly connected to the inner wall of the fixed shell, the telescopic end of the electric telescopic rod passes through the partition, a protective tube is fixedly connected to the bottom of the partition, the inner wall of the protective tube is fitted with the outer wall of the electric telescopic rod, an air outlet valve is connected to the fixed shell, an air outlet pipe is fixedly connected to the inner wall of the fixed shell, the top of the air outlet pipe is fixedly connected to the bottom of the protective tube, a suction tube is fixedly connected to the suction tube, the suction tube passes through the fixed plate and extends to the inside of the liquid storage tube, a connecting tube is connected to the bottom of the fixed plate, the inner wall of the connecting tube is fitted with the outer wall of the suction tube, a liquid inlet is provided on the suction tube, and a sealing block is fixedly connected to the bottom of the suction tube.

[0008] Preferably, the fixed plate is rotatably connected to a rotating plate, a first air inlet hole is opened on the fixed plate, a second air inlet hole is opened on the rotating plate, a handle is fixedly connected to the outer wall of the rotating plate, a limiting block is fixedly connected to the outer wall of the fixed plate, and the fixed plate is connected to the fixed shell through the opened first air inlet hole.

[0009] By providing a rotating plate, a first air inlet hole, a second air inlet hole, a handle and a limit block, the natural gas inside the liquid storage pipe can be guided. When the pressure gauge detects that the natural gas inside the liquid storage pipe exceeds a specified threshold, the staff can rotate the first air inlet hole and the second air inlet hole to connect together, thereby guiding the natural gas inside the liquid storage pipe, thereby avoiding the liquid storage pipe from rupturing after the natural gas exceeds the specified threshold, thereby avoiding the occurrence of safety accidents.

[0010] Preferably, a limiting groove is provided on one side of the limiting block, and the limiting groove provided on the limiting block fits with the outer wall of the handle.

[0011] The handle is fixed by setting a limit groove, and the handle can be clamped through the limit groove to prevent the liquid storage tube partition and the second air inlet from docking together during the movement of the device, thereby preventing the natural gas inside the liquid storage tube from having a large fluidity.

[0012] Preferably, a sealing ring is fixedly connected to the outer wall of the dipping tube, and the top of the sealing ring fits with the bottom of the connecting tube.

[0013] By setting a sealing ring, the gas inside the liquid storage tube is sealed to prevent the gas inside the liquid storage tube from leaking through the joint between the connecting tube and the suction tube, thereby avoiding affecting the weight of the natural gas inside the liquid storage tube, and further avoiding causing slight changes in the natural gas inside the liquid storage tube and affecting the detection of natural gas.

[0014] Preferably, a sealing gasket is fixedly connected to the bottom of the liquid storage tube, and the top of the sealing block fits with the bottom of the sealing gasket.

[0015] By providing a sealing gasket, the sealing of the joint between the sealing block and the liquid storage tube is achieved, thereby preventing the natural gas inside the liquid storage tube from leaking through the joint with the sealing block or coming into contact with the air, thereby preventing slight changes in the natural gas inside the liquid storage tube and affecting the detection of the natural gas.

[0016] Preferably, a sealing cover is threadedly connected to the bottom of the liquid storage tube, and the top of the sealing cover is fitted with the bottom of the sealing block.

[0017] By setting a sealing cover, the sealing block is protected, and the sealing block is used to seal the bottom of the liquid storage tube, thereby reducing the contact between the sealing block and the outside air when the device is not in use, thereby avoiding subtle changes in the absorbed natural gas when the sealing block is in use and when drawing natural gas, thereby affecting the detection of natural gas.

[0018] In summary, the technical effects and advantages of the utility model are as follows:

[0019] The protection of the device and the guidance of the liquid are achieved through the mutual cooperation of the fixed shell, liquid storage pipe, pressure gauge, electric telescopic rod, air outlet valve, partition, air outlet pipe, connecting pipe, suction pipe, liquid inlet and protective pipe. Through the arrangement of the connecting pipe and the air outlet pipe, the natural gas inside the liquid storage pipe can be partially guided during the process of the device absorbing natural gas, thereby preventing the natural gas inside the liquid storage pipe from reducing its internal pressure during the vaporization process and thus avoiding damage. At the same time, the partition is used to isolate a small space inside the fixed shell, thereby avoiding waste of natural gas.

[0020] The natural gas inside the liquid storage tube is guided by the cooperation of the rotating plate, the first air inlet hole, the second air inlet hole, the handle and the limit block. When the pressure gauge detects that the natural gas inside the liquid storage tube exceeds a specified threshold, the staff can rotate the first air inlet hole and the second air inlet hole to connect together, thereby guiding the natural gas inside the liquid storage tube, thereby avoiding the liquid storage tube from rupturing after the natural gas exceeds the specified threshold, thereby avoiding the occurrence of safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the suction tube and its related parts of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the sealing gasket and its related parts of the utility model;

[0024] Figure 4 This is a schematic structural diagram of the rotating plate and its related parts of the utility model.

[0025] In the figure:

[0026] 1. Fixed shell; 2. Liquid storage tube; 3. Pressure gauge; 4. Electric telescopic rod; 5. Exhaust valve; 6. Partition; 7. Exhaust pipe; 8. Connecting pipe; 9. Fixed plate; 10. Sealing ring; 11. Dipping tube; 12. Sealing cover; 13. Liquid inlet; 14. Protective tube; 15. Sealing pad; 16. First air inlet hole; 17. Rotating plate; 18. Handle; 19. Limit block; 20. Limit groove; 21. Second air inlet hole; 22. Sealing block. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Reference Figure 1-3 A liquefied natural gas sampler comprises a fixed shell 1, a fixed plate 9 is fixedly connected to the bottom of the fixed shell 1, a liquid storage pipe 2 is fixedly connected to the bottom of the fixed plate 9, the liquid storage pipe 2 is used to store the extracted liquefied natural gas, a pressure gauge 3 is fixedly connected to the outer wall of the liquid storage pipe 2, the pressure gauge 3 is used to detect the pressure of the natural gas inside the liquid storage pipe 2, so as to avoid the natural gas pressure inside the liquid storage pipe 2 being too high, thereby avoiding damage to the device or the occurrence of a safety accident, an electric telescopic rod 4 is fixedly connected to the inner top wall of the fixed shell 1, a partition 6 is fixedly connected to the inner wall of the fixed shell 1, the partition 6 is used to isolate the space inside the fixed shell 1 into a small space, the telescopic end of the electric telescopic rod 4 passes through the partition 6, a protective tube 14 is fixedly connected to the bottom of the partition 6, the protective tube 14 is used to protect the telescopic end of the electric telescopic rod 4, the inner wall of the protective tube 14 is in contact with the outer wall of the electric telescopic rod 4, and an outlet valve 5 is connected to the fixed shell 1, the outlet valve 5 is used to isolate the liquefied natural gas inside the space isolated by the partition 6 The inner wall of the fixed shell 1 is fixedly connected with an air outlet pipe 7, which is used to guide the natural gas inside the liquid storage pipe 2. The top of the air outlet pipe 7 is fixedly connected to the bottom of the protective pipe 14. The telescopic end of the electric telescopic rod 4 is fixedly connected with a suction pipe 11, which is used to draw liquefied natural gas, so that the liquefied natural gas flows into the interior of the liquid storage pipe 2. The suction pipe 11 penetrates the fixed plate 9 and extends to the interior of the liquid storage pipe 2. A hole is opened at the top of the suction pipe 11, and the bottom of the fixed plate 9 is connected with a connecting pipe 8, which is provided with a hole. The inner wall of the connecting pipe 8 is fitted with the outer wall of the suction pipe 11. A liquid inlet 13 is opened on the suction pipe 11, and the liquid inlet 13 is used for liquefied natural gas to draw from the interior of the suction pipe 11, so that the natural gas can enter the interior of the liquid storage pipe 2. A sealing block 22 is fixedly connected to the bottom of the suction pipe 11, and the sealing block 22 is used to seal the liquid storage pipe 2 to prevent the natural gas inside the liquid storage pipe 2 from being lost.

[0029] Reference Figure 3 and Figure 4 , a rotating plate 17 is rotatably connected to the fixed plate 9, a first air inlet 16 is provided on the fixed plate 9, a second air inlet 21 is provided on the rotating plate 17, a handle 18 is fixedly connected to the outer wall of the rotating plate 17, the handle 18 is used to facilitate the staff to rotate the rotating plate 17, the outer wall of the fixed plate 9 is fixedly connected to a limiting block 19, the limiting block 19 is used to position the rotating plate 17, so that the second air inlet 21 provided on the rotating plate 17 and the first air inlet 16 provided on the fixed plate 9 can be quickly connected, the fixed plate 9 is connected to the fixed shell 1 through the first air inlet 16 provided, the connection between the fixed plate 9 and the rotating plate 17 can realize the guidance of the natural gas inside the liquid storage pipe 2, when the pressure gauge 3 detects that the natural gas inside the liquid storage pipe 2 exceeds the specified threshold value, the staff can rotate to make the first air inlet 16 and the second air inlet 21 dock together, so as to guide the natural gas inside the liquid storage pipe 2, so as to avoid the rupture of the liquid storage pipe 2 after the natural gas exceeds the specified threshold value, thereby avoiding the occurrence of safety accidents.

[0030] Reference Figure 3 and Figure 4 A limiting groove 20 is provided on one side of the limiting block 19, and the limiting groove 20 provided on the limiting block 19 is in contact with the outer wall of the handle 18. The limiting groove 20 is used to fix the handle 18. The handle 18 can be clamped through the limiting groove 20, thereby preventing the partition 6 of the liquid storage tube 2 and the second air inlet 21 from docking together during the movement of the device, thereby preventing the natural gas inside the liquid storage tube 2 from having a large fluidity.

[0031] Reference Figure 2 A sealing ring 10 is fixedly connected to the outer wall of the dip tube 11, and the top of the sealing ring 10 is in contact with the bottom of the connecting tube 8. The sealing ring 10 is used to seal the gas inside the liquid storage tube 2 to prevent the gas inside the liquid storage tube 2 from being lost through the contact between the connecting tube 8 and the dip tube 11, thereby avoiding affecting the weight of the natural gas inside the liquid storage tube 2, and further avoiding causing slight changes in the natural gas inside the liquid storage tube 2, which affects the detection of the natural gas.

[0032] Reference Figure 3 A sealing gasket 15 is fixedly connected to the bottom of the liquid storage tube 2, and the top of the sealing block 22 fits with the bottom of the sealing gasket 15. The sealing gasket 15 can seal the joint between the sealing block 22 and the liquid storage tube 2, thereby preventing the natural gas inside the liquid storage tube 2 from being lost through the joint with the sealing block 22 or coming into contact with the air, thereby avoiding causing slight changes in the natural gas inside the liquid storage tube 2 and affecting the detection of the natural gas.

[0033] Reference Figure 2 and Figure 3The bottom of the liquid storage tube 2 is threadedly connected with a sealing cover 12, and the top of the sealing cover 12 fits with the bottom of the sealing block 22. The sealing cover 12 can protect the sealing block 22, and the sealing block 22 is used to seal the bottom of the liquid storage tube 2, thereby avoiding the contact between the sealing block 22 and the outside air when the device is not in use, thereby avoiding subtle changes in the absorbed natural gas when the sealing block 22 is used and when drawing natural gas, thereby affecting the detection of natural gas.

[0034] Working principle:

[0035] When the staff uses the sampler to sample liquefied natural gas, they can rotate the sealing cover 12 to make the opening at the bottom of the liquid storage tube 2 leak out, so that the device can be used. The staff connects the sampler with the liquefied natural gas device that needs to be sampled, starts the telescopic end of the electric telescopic rod 4 to drive the suction tube 11 to move, and the suction tube 11 extends to the inside of the liquefied natural gas storage device through movement, so as to start to draw liquefied natural gas. After drawing liquefied natural gas, the telescopic end of the electric telescopic rod 4 drives the suction tube 11 to move, so that the natural gas inside the suction tube 11 enters the inside of the liquid storage tube 2. During the movement of the suction tube 11, the suction tube 11 moves. During the process, the hole starting from the top of the suction tube 11 and the hole opened on the connecting tube 8 will be briefly connected, so that the vaporized natural gas in the liquid storage tube 2 will flow into the small space of the partition 6, thereby effectively alleviating the pressure of the natural gas inside the liquid storage tube 2. At the same time, when the natural gas inside the liquid storage tube 2 still exceeds the predetermined threshold, the staff can rotate the rotating plate 17 through the handle 18, so that the second air inlet 21 opened on the rotating plate 17 is connected with the first air inlet 16 opened on the fixed plate 9, so that part of the natural gas inside the liquid storage tube 2 flows into the small space isolated by the partition 6, thereby avoiding the waste of natural gas.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A liquefied natural gas sampler, comprising a fixed shell (1), characterized in that: The bottom of the fixed shell (1) is fixedly connected to a fixed plate (9), the bottom of the fixed plate (9) is fixedly connected to a liquid storage tube (2), the outer wall of the liquid storage tube (2) is fixedly connected to a pressure gauge (3), the inner top wall of the fixed shell (1) is fixedly connected to an electric telescopic rod (4), the inner wall of the fixed shell (1) is fixedly connected to a partition (6), the telescopic end of the electric telescopic rod (4) passes through the partition (6), the bottom of the partition (6) is fixedly connected to a protective tube (14), the inner wall of the protective tube (14) is in contact with the outer wall of the electric telescopic rod (4), and the fixed shell (1) is connected to an air outlet. The fixed shell (1) is provided with an air outlet pipe (7) fixedly connected to the inner wall thereof, the top of the air outlet pipe (7) is fixedly connected to the bottom of the protective tube (14), the telescopic end of the electric telescopic rod (4) is fixedly connected to a suction tube (11), the suction tube (11) passes through the fixed plate (9) and extends to the inside of the liquid storage tube (2), the bottom of the fixed plate (9) is connected to a connecting pipe (8), the inner wall of the connecting pipe (8) is in contact with the outer wall of the suction tube (11), the suction tube (11) is provided with a liquid inlet (13), and the bottom of the suction tube (11) is fixedly connected to a sealing block (22).

2. A liquefied natural gas sampler according to claim 1, characterized in that: The fixed plate (9) is rotatably connected to a rotating plate (17), the fixed plate (9) is provided with a first air inlet hole (16), the rotating plate (17) is provided with a second air inlet hole (21), the outer wall of the rotating plate (17) is fixedly connected to a handle (18), the outer wall of the fixed plate (9) is fixedly connected to a limiting block (19), and the fixed plate (9) is connected to the fixed shell (1) via the first air inlet hole (16).

3. A liquefied natural gas sampler according to claim 2, characterized in that: A limiting groove (20) is provided on one side of the limiting block (19), and the limiting groove (20) provided on the limiting block (19) is in contact with the outer wall of the handle (18).

4. A liquefied natural gas sampler according to claim 1, characterized in that: A sealing ring (10) is fixedly connected to the outer wall of the dipping tube (11), and the top of the sealing ring (10) is in contact with the bottom of the connecting tube (8).

5. A liquefied natural gas sampler according to claim 1, characterized in that: A sealing gasket (15) is fixedly connected to the bottom of the liquid storage tube (2), and the top of the sealing block (22) is in contact with the bottom of the sealing gasket (15).

6. A liquefied natural gas sampler according to claim 1, characterized in that: The bottom of the liquid storage tube (2) is threadedly connected to a sealing cover (12), and the top of the sealing cover (12) is in contact with the bottom of the sealing block (22).

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