Liquefied natural gas sampler

Abstract

The utility model belongs to the technical field of liquefied natural gas sampling, and discloses a liquefied natural gas sampler which comprises a fixed shell, a sample storage tank is fixedly arranged at the top end of the fixed shell, a sliding groove is formed in the sample storage tank, a sealing sliding column is arranged in the sliding groove in a sliding mode, and a first connecting rod is rotationally arranged at the bottom end of the sealing sliding column. The other end of the first connecting rod is rotatably provided with a rotating rod, the other end of the rotating rod is rotatably provided with a rotating wheel, the outer side of the rotating wheel is rotatably connected with the inner wall of the fixed shell, the lower portion of the rotating rod is rotatably provided with a second connecting rod, the other end of the second connecting rod is rotatably provided with a sliding sleeve, and the other side of the sliding sleeve is rotatably provided with a third connecting rod. By means of the scheme, the liquefied natural gas quantitative sampling device solves the problems that liquefied natural gas cannot be quantitatively sampled according to sampling requirements in the using process, a large amount of time and energy of workers are wasted, and the working efficiency of the workers is reduced.

Description

Technical Field

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

[0002] Liquefied natural gas (LNG) is widely recognized as the cleanest fossil fuel on Earth. It is colorless, odorless, non-toxic, and non-corrosive, with a volume approximately 1 / 625th that of the same amount of gaseous natural gas and a mass only about 45% that of the same volume of water. LNG combustion produces very little air pollution and releases a large amount of heat, making it a relatively advanced energy source that can fundamentally improve environmental quality.

[0003] Meanwhile, a liquefied natural gas (LNG) sampler with application number 202321986783.6 includes a main unit, a portable unit, and a control unit. The main unit includes an LNG sampling bottle, a content control component, and two hazardous gas detection components. An inlet and an outlet are respectively located on opposite sides of the LNG sampling bottle. The content control component is used to detect in real time whether the amount of natural gas in the LNG sampling bottle meets the sampling requirements. It includes an inflation bladder, a solenoid valve one, and a solenoid valve two. The inflation bladder is installed on the top of the LNG sampling bottle. A solenoid valve one and a flange connection plate one are sequentially arranged at the outer end of the inlet. A solenoid valve two and a flange connection plate two are sequentially arranged at the outer end of the outlet. The control unit is used to control the opening and closing of solenoid valve one and solenoid valve two. The two hazardous gas detection components are used to monitor natural gas leakage in real time during inlet and outlet, and emit an alarm sound when a natural gas leak is detected.

[0004] However, the following problems were found in the implementation of the relevant technology: a liquefied natural gas sampler could not quantitatively sample liquefied natural gas according to the sampling requirements during use, which wasted a lot of time and energy of the staff and reduced the staff's work efficiency.

[0005] To address this, we propose a liquefied natural gas sampler. Utility Model Content

[0006] To address the problems mentioned in the background section, this utility model provides a liquefied natural gas sampler, which has the advantages of quantitatively sampling liquefied natural gas according to sampling needs during use, saving staff a lot of time and energy and improving staff work efficiency.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a liquefied natural gas sampler, comprising a fixed housing, a sample storage tank fixedly mounted at the top of the fixed housing, a sliding groove provided inside the sample storage tank, a sealing sliding column slidably mounted inside the sliding groove, a first connecting rod rotatably mounted at the bottom end of the sealing sliding column, a rotating rod rotatably mounted at the other end of the first connecting rod, a rotating wheel rotatably mounted at the other end of the rotating rod, and the outer side of the rotating wheel rotatably connected to the inner wall of the fixed housing, a second connecting rod rotatably mounted at the lower part of the rotating rod, a sliding sleeve rotatably mounted at the other end of the second connecting rod, a third connecting rod rotatably mounted on the other side of the sliding sleeve, and the other end of the third connecting rod rotatably connected to the inner wall of the fixed housing.

[0008] Preferably, the fixed housing has a rotating block inside, and a threaded rod inside the rotating block. A sliding sleeve rotates spirally on the outside of the threaded rod. The lower part of the fixed housing has an arc-shaped groove, and the other end of the threaded rod slides inside the arc-shaped groove.

[0009] Preferably, the other end of the threaded rod is fixedly provided with a plum blossom knob, and the plum blossom knob slides on the outside of the arc groove.

[0010] Preferably, a fixing block is fixedly provided at the top of the sample storage tank, a first sealing column is slidably provided on one side of the inside of the fixing block, a first spring is sleeved on the outside of the first sealing column, and the other end of the first spring is fixedly connected to the inner wall of the fixing block.

[0011] Preferably, a second sealing post is slidably provided on the other side of the interior of the fixing block, a second spring is fixedly provided at the top of the second sealing post, and the other end of the second spring is fixedly connected to the inner wall of the fixing block.

[0012] Preferably, an air inlet pipe is fixedly provided on one side of the fixing block, and an air outlet pipe is fixedly provided on the other side of the fixing block.

[0013] Preferably, a handwheel is fixedly provided on the outer side of the rotating wheel, and the handwheel rotates on the outer side of the fixed housing.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model, by setting up a sample storage tank, first connects the gas inlet pipe to the liquefied natural gas storage tank. According to the sampling requirements, the swivel knob is turned. The rotation of the swivel knob drives the threaded rod to rotate and slide downward inside the arc groove. The valve is opened, and the handwheel is turned to drive the rotating wheel to rotate. The rotation of the rotating wheel drives the first connecting rod at the other end of the rotating rod to rotate. The rotation of the first connecting rod drives the sealing slide column to slide inside the sliding groove, thereby achieving the discharge of liquefied natural gas. Thus, during use, liquefied natural gas can be sampled quantitatively according to sampling requirements, saving a lot of time and energy for the staff and improving the work efficiency of the staff. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the present invention.

[0018] Figure 3 This is a schematic cross-sectional view of the present invention.

[0019] Figure 4 This utility model Figure 3 A schematic diagram of structure A.

[0020] In the diagram: 1. Fixed shell; 2. Sample storage container; 3. Slide groove; 4. Sealing slide column; 5. First connecting rod; 6. Rotating rod; 7. Rotating wheel; 8. Second connecting rod; 9. Handwheel; 10. Third connecting rod; 11. Rotating block; 12. Threaded rod; 13. Sliding sleeve; 14. Arc groove; 15. Plum blossom knob; 16. Fixed block; 17. First sealing column; 18. First spring; 19. Second sealing column; 20. Second spring; 21. Inlet pipe; 22. Outlet pipe. Detailed Implementation

[0021] 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.

[0022] like Figures 1 to 4As shown, this utility model provides a liquefied natural gas sampler, including a fixed housing 1. A sample storage tank 2 is fixedly mounted on the top of the fixed housing 1. A sliding groove 3 is provided inside the sample storage tank 2. A sealing sliding column 4 is slidably mounted inside the sliding groove 3. A first connecting rod 5 is rotatably mounted on the bottom end of the sealing sliding column 4. A rotating rod 6 is rotatably mounted on the other end of the first connecting rod 5. A rotating wheel 7 is rotatably mounted on the other end of the rotating rod 6. The outer side of the rotating wheel 7 is rotatably connected to the inner wall of the fixed housing 1. A second connecting rod 8 is rotatably mounted on the lower part of the rotating rod 6. A sliding sleeve 13 is rotatably mounted on the other end of the second connecting rod 8. A third connecting rod 10 is rotatably mounted on the other side of the sliding sleeve 13. The other end of the third connecting rod 10 is rotatably connected to the inner wall of the fixed housing 1. A threaded rod 12 rotates to drive the sliding sleeve 13 to move.

[0023] Specifically, the fixed housing 1 has a rotating block 11 inside, and a threaded rod 12 is rotatably provided inside the rotating block 11. The sliding sleeve 13 rotates spirally outside the threaded rod 12. The lower part of the fixed housing 1 has an arc-shaped groove 14, and the other end of the threaded rod 12 slides inside the arc-shaped groove 14. When the plum blossom knob 15 is rotated, it drives the threaded rod 12 to rotate while sliding downward inside the arc-shaped groove 14.

[0024] Furthermore, the other end of the threaded rod 12 is fixedly provided with a plum blossom knob 15, and the plum blossom knob 15 slides on the outside of the arc groove 14. The rotation of the plum blossom knob 15 drives the threaded rod 12 to rotate inside the rotating block 11.

[0025] Furthermore, a fixing block 16 is fixedly provided at the top of the sample storage tank 2, and a first sealing column 17 is slidably provided on one side of the inside of the fixing block 16. A first spring 18 is sleeved on the outside of the first sealing column 17, and the other end of the first spring 18 is fixedly connected to the inner wall of the fixing block 16. Pressure drives the second sealing column 19 to slide inside the fixing block 16, and the first spring 18 undergoes elastic deformation to stretch and contract.

[0026] It is worth noting that a second sealing post 19 is slidably provided on the other side of the interior of the fixing block 16. A second spring 20 is fixedly provided at the top of the second sealing post 19, and the other end of the second spring 20 is fixedly connected to the inner wall of the fixing block 16. Pressure drives the second sealing post 19 to slide upward inside the fixing block 16.

[0027] It is worth noting that an air inlet pipe 21 is fixedly provided on one side of the fixing block 16, which is connected to the liquefied natural gas storage tank, and an air outlet pipe 22 is fixedly provided on the other side of the fixing block 16, which is connected to the detector.

[0028] It is worth mentioning that a handwheel 9 is fixedly provided on the outer side of the rotating wheel 7, and the handwheel 9 rotates on the outer side of the fixed housing 1. The rotation of the handwheel 9 drives the rotating wheel 7 to rotate.

[0029] Working principle: When taking samples, the staff first connects the inlet pipe 21 to the liquefied natural gas storage tank. According to the sampling requirements, they rotate the swivel knob 15. The rotation of the swivel knob 15 causes the threaded rod 12 to rotate inside the rotating block 11. The rotation of the threaded rod 12 causes the sliding sleeve 13 to move. The movement of the sliding sleeve 13 causes the second connecting rod 8 and the third connecting rod 10 to rotate. Simultaneously, the rotation of the swivel knob 15 causes the threaded rod 12 to rotate and slide downwards inside the arc-shaped groove 14. The valve is then opened, and the handwheel 9 is rotated. The rotation of the handwheel 9 causes the rotating wheel 7 to rotate. The rotation of the rotating wheel 7 causes the rotating rod 6 to rotate. The rotation of the rotating rod 6 causes the first connecting rod 5 to rotate. The rotation of the first connecting rod 5 causes the sealing slide column 4 to slide inside the sliding groove 3. The downward sliding of the sealing slide column 4 increases the size of the sample storage tank 2. The internal pressure causes the first sealing column 17 to move downwards, and the first spring 18 undergoes elastic deformation to stretch and contract, allowing liquefied natural gas to flow into the sample storage tank 2. After sampling is completed, the valve of the inlet pipe 21 is closed. When discharging, the detector is connected to the outlet pipe 22, and the outlet valve is opened. Following the same principle, the handwheel 9 is turned, causing the sealing slide column 4 to move upwards. The pressure causes the second sealing column 19 to slide upwards inside the fixed block 16, and the second spring 20 undergoes elastic deformation to stretch and contract, thereby discharging the liquefied natural gas. This allows for quantitative sampling of liquefied natural gas according to sampling needs during use, saving staff a significant amount of time and effort and improving their work efficiency.

[0030] 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 process, method, article, or apparatus.

[0031] 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 liquefied natural gas sampler, comprising a fixed housing (1), characterized in that: A sample storage tank (2) is fixedly provided at the top of the fixed housing (1). A sliding groove (3) is provided inside the sample storage tank (2). A sealing sliding column (4) is slidably provided inside the sliding groove (3). A first connecting rod (5) is rotatably provided at the bottom end of the sealing sliding column (4). A rotating rod (6) is rotatably provided at the other end of the first connecting rod (5). A rotating wheel (7) is rotatably provided at the other end of the rotating rod (6). The outer side of the rotating wheel (7) is rotatably connected to the inner wall of the fixed housing (1). A second connecting rod (8) is rotatably provided at the lower part of the rotating rod (6). A sliding sleeve (13) is rotatably provided at the other end of the second connecting rod (8). A third connecting rod (10) is rotatably provided on the other side of the sliding sleeve (13). The other end of the third connecting rod (10) is rotatably connected to the inner wall of the fixed housing (1).

2. The liquefied natural gas sampler according to claim 1, characterized in that: The fixed housing (1) is provided with a rotating block (11) inside, and a threaded rod (12) is provided inside the rotating block (11) inside. The sliding sleeve (13) rotates spirally outside the threaded rod (12). The lower part of the fixed housing (1) is provided with an arc groove (14), and the other end of the threaded rod (12) slides inside the arc groove (14).

3. A liquefied natural gas sampler according to claim 2, characterized in that: The other end of the threaded rod (12) is fixedly provided with a plum blossom knob (15), and the plum blossom knob (15) slides on the outside of the arc groove (14).

4. A liquefied natural gas sampler according to claim 1, characterized in that: The top of the sample storage container (2) is fixedly provided with a fixing block (16), and a first sealing column (17) is slidably provided on one side of the inside of the fixing block (16). A first spring (18) is sleeved on the outside of the first sealing column (17), and the other end of the first spring (18) is fixedly connected to the inner wall of the fixing block (16).

5. A liquefied natural gas sampler according to claim 4, characterized in that: A second sealing post (19) is slidably provided on the other side of the interior of the fixing block (16). A second spring (20) is fixedly provided at the top of the second sealing post (19), and the other end of the second spring (20) is fixedly connected to the inner wall of the fixing block (16).

6. A liquefied natural gas sampler according to claim 4, characterized in that: An air inlet pipe (21) is fixedly provided on one side of the fixed block (16), and an air outlet pipe (22) is fixedly provided on the other side of the fixed block (16).

7. A liquefied natural gas sampler according to claim 1, characterized in that: A handwheel (9) is fixedly provided on the outside of the rotating wheel (7), and the handwheel (9) rotates on the outside of the fixed housing (1).

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