Natural gas component analyzing and sampling device

Abstract

The utility model relates to the technical field of natural gas pipelines, and discloses a natural gas component analyzing and sampling device which comprises a pipeline, a gas inlet pipe is fixedly connected to the left side of the top end of the pipeline, a base plate is slidably connected to the inner wall of the gas inlet pipe, and two limiting blocks are slidably connected to the top end of the inner wall of the gas inlet pipe. The top ends of the two limiting blocks are fixedly connected with sealing rings, the top ends of the sealing rings are fixedly connected with a top cover, the right side of the air inlet pipe is fixedly connected with an air conveying pipe, the inner wall of the top end of the air conveying pipe is slidably connected with an adjusting assembly, and the right side of the inner wall of the air conveying pipe is slidably connected with a sealing disc. The bottom end of the right side of the gas conveying pipe is fixedly connected with a supporting block, and the right side of the gas conveying pipe is in threaded connection with a sampling pipe. According to the natural gas sampling device, air in the sampling device is extracted before natural gas is sampled, so that the concentration of the sampled natural gas is ensured, and the aim of improving the accuracy and the reliability of a sampling result is fulfilled.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas pipelines, in particular to a natural gas component analysis sampling device. Background Art

[0002] A natural gas component analysis sampling device is a device used to sample natural gas flow and prepare samples for component analysis. The sampling device can accurately control the flow rate, temperature and pressure of the sampling, and ensure the representativeness and repeatability of the sample. Through this device, the natural gas sample can be introduced into an analytical instrument such as a gas chromatograph or a mass spectrometer to determine the content and proportion of various gas components therein.

[0003] After searching, Chinese patent announcement number: CN219673979U discloses a natural gas pipeline with a natural gas sampling device, including a pipeline body, a connecting pipe is fixedly provided on the outside of the pipeline body, and the bottom end of the connecting pipe is conductively connected to the inner cavity of the pipeline body, a sealing pipe is fixedly provided on the outside of the connecting pipe, and one end of the sealing pipe close to the connecting pipe is conductively connected to the inner cavity of the connecting pipe, a stop valve, a sealing assembly and a gas flow meter are installed in sequence at the connecting pipe, a collection pipe is detachably connected at the port of the sealing pipe, and an airtight valve is installed at the end of the collection pipe. The utility model relates to the technical field of natural gas pipelines. In the natural gas pipeline with a natural gas sampling device, a sealing ball arranged on the inner side of a sealing cylinder is pushed open and the serpentine spring is compressed and deformed, so that the natural gas enters the collection tube from the gas port arranged at the end of the sealing cylinder, and the amount of natural gas introduced is monitored by a gas flow meter. After the sampling is completed, the airtight valve arranged at the collection tube is closed, and then the stop valve is closed, and the elastic force of the serpentine spring is used to quickly block the gas port with the sealing ball, so that the natural gas remaining in the sealing cylinder can be quickly volatilized while preventing air from mixing into the device, thereby preventing residue and ensuring the quality of detection. After the collection tube and the sealing tube are connected relative to each other, the connecting rod is rotated to engage with the inner side of the slot opened at the connecting block, and the block arranged at the end of the connecting rod is engaged with the port of the slot, so that the connecting rod is limited, so that the collection tube can be quickly assembled and fixed.

[0004] The beneficial effects in the above patent specification mention that "the sealing ball arranged on the inner side of the sealing tube is pushed open and the serpentine spring is compressed and deformed, so that the natural gas enters the collection tube from the gas port arranged at the end of the sealing tube, and the amount of natural gas introduced is monitored by a gas flow meter. When the sampling is completed, the airtight valve arranged at the collection tube is closed, and then the stop valve is closed, and the elastic force of the serpentine spring is used to quickly seal the gas port with the sealing ball, so that the natural gas remaining in the sealing tube can be quickly evaporated while avoiding the mixing of air into the device, thereby avoiding residue and ensuring the quality of the detection." Although the above patent can prevent air from entering the collection tube after the sampling is completed, in the specific use process, in the initial stage, the air in the collection tube is not extracted, which will result in the presence of air in the natural gas finally sampled, further leading to the problem of impure natural gas concentration. For this reason, a natural gas component analysis sampling device is proposed to solve the above problem. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art, and to propose a natural gas component analysis sampling device, aiming to improve the problem that the sampling device in the prior art does not extract the air in the collection tube when sampling natural gas, which will result in the presence of air in the finally extracted natural gas, further leading to the problem of impure natural gas concentration.

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

[0007] A natural gas component analysis sampling device comprises a pipeline, wherein an air inlet pipe is fixedly connected to the left side of the top end of the pipeline, a bottom plate is slidably connected to the inner wall of the air inlet pipe, two limit blocks are slidably connected to the top end of the inner wall of the air inlet pipe, sealing rings are fixedly connected to the top ends of the two limit blocks, a top cover is fixedly connected to the top end of the sealing ring, a gas supply pipe is fixedly connected to the right side of the air inlet pipe, an adjusting assembly is slidably connected to the inner wall of the top end of the gas supply pipe, a sealing disk is slidably connected to the right side of the inner wall of the gas supply pipe, a supporting block is fixedly connected to the bottom end of the right side of the gas supply pipe, a sampling pipe is threadedly connected to the right side of the gas supply pipe, and gas outlets are opened all around the right side of the sampling pipe.

[0008] Furthermore, the adjusting assembly includes a hollow column, the bottom end of the hollow column is slidably connected to the top inner wall of the gas pipe, the top of the hollow column is fixedly connected to a valve hand, a spring is arranged inside the hollow column, the top of the inner wall of the hollow column is fixedly connected to a rotating column, the inner wall of the rotating column is slidably connected to a special-shaped column, the outside of the special-shaped column is fixedly connected to a valve ball, the bottom end of the valve ball is rotatably connected to another rotating column, the front and rear ends of the inner wall of the gas pipe are fixedly connected to sealing gaskets, and the bottom end of the special-shaped column is fixedly connected to a bottom block.

[0009] Furthermore, one end of the spring is fixedly connected to one side of the inner wall of the hollow column, and the other end of the spring is fixedly connected to one side of the inner wall of the top end of the gas delivery pipe.

[0010] Furthermore, the outer side of the bottom end of the top cover contacts the outer side of the top end of the air inlet pipe, and the outer side of the sealing ring is slidably connected to the top end of the inner wall of the air inlet pipe.

[0011] Furthermore, the bottom end of the rotating column at the top is slidably connected to the top inner wall of the valve ball, and the top end of the special-shaped column is fixedly connected to the top inner wall of the hollow column.

[0012] Furthermore, the outside of the valve ball contacts the adjacent sides of the two sealing pads, and the outside of the bottom block is slidably connected to the bottom end of the inner wall of the gas pipe.

[0013] Furthermore, the outside of the rotating column at the bottom end is rotatably connected to the top of the inner wall of the gas delivery pipe, and the outside of the bottom block is slidably connected to the inner wall of the rotating column at the bottom end.

[0014] Furthermore, the outside of the sealing disk is slidably connected to the inner wall of the sampling tube, and the bottom end of the supporting block is fixedly connected to the right side of the top end of the pipeline.

[0015] The utility model has the following beneficial effects:

[0016] 1. In the utility model, by the mutual cooperation of the sealing pad, the top cover, the sealing ring, the sampling tube, the air outlet and the like, the air inside the sampling device is extracted before the natural gas is sampled, the concentration of the sampled natural gas is ensured, and the accuracy and reliability of the sampling results are improved.

[0017] 2. In the utility model, the valve hand, spring, rotating column, special-shaped column, valve ball and other structures cooperate with each other to achieve the rate adjustment of the natural gas sampling inlet, reduce unnecessary waste of resources, and achieve the purpose of improving the economic benefits of the sampling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional diagram of a natural gas component analysis sampling device proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the valve ball structure of a natural gas component analysis sampling device proposed by the utility model;

[0020] Figure 3 for Figure 2 A in the enlarged view;

[0021] Figure 4 for Figure 2 The enlarged view of point B in the figure;

[0022] Figure 5 for Figure 2 Enlarged view of point C in .

[0023] Legend:

[0024] 1. Pipeline; 2. Air inlet pipe; 3. Chassis; 4. Limit block; 5. Sealing ring; 6. Top cover; 7. Air pipe; 8. Empty column; 9. Valve hand; 10. Spring; 11. Rotating column; 12. Special-shaped column; 13. Valve ball; 14. Sealing gasket; 15. Bottom block; 16. Sealing disk; 17. Support block; 18. Sampling tube; 19. Air outlet. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Reference Figure 1-Figure 2 The utility model provides an embodiment: a natural gas component analysis sampling device, including a pipeline 1, an air intake pipe 2 is fixedly connected to the left side of the top end of the pipeline 1, and the air intake pipe 2 here is used to temporarily store the natural gas inside the pipeline 1, and the inner wall of the air intake pipe 2 is slidably connected to a chassis 3, and the top end of the inner wall of the air intake pipe 2 is slidably connected to two limit blocks 4, and the top ends of the two limit blocks 4 are fixedly connected to sealing rings 5, and the two limit blocks 4 here are used to limit the movement range of the sealing ring 5.

[0027] Reference Figure 2 The outer side of the sealing ring 5 is slidably connected to the top of the inner wall of the intake pipe 2, and the top of the sealing ring 5 is fixedly connected to a top cover 6. The outer side of the bottom end of the top cover 6 is in contact with the outer side of the top of the intake pipe 2. The intake pipe 2 here provides a support for the top cover 6. The right side of the intake pipe 2 is fixedly connected to a gas supply pipe 7, and the inner wall of the top of the gas supply pipe 7 is slidably connected to an adjustment component. The adjustment component here is used to adjust the rate of natural gas output, reduce unnecessary waste of resources, and achieve the purpose of improving the economic benefits of the sampling process.

[0028] Reference Figure 2-Figure 3The regulating component includes a hollow column 8, the bottom end of the hollow column 8 is slidably connected to the inner wall of the top end of the gas pipe 7, and the gas pipe 7 here provides a stable sliding space for the hollow column 8. The top end of the hollow column 8 is fixedly connected with a valve hand 9, and the valve hand 9 here is used to control the natural gas intake rate of the regulating component. A spring 10 is arranged inside the hollow column 8, one end of the spring 10 is fixedly connected to one side of the inner wall of the hollow column 8, and the other end of the spring 10 is fixedly connected to one side of the inner wall of the top end of the gas pipe 7.

[0029] Reference Figure 3 The air supply pipe 7 and the hollow column 8 here provide a stable support for the spring 10. The top of the inner wall of the hollow column 8 is fixedly connected with a rotating column 11. The inner wall of the rotating column 11 is slidably connected with a special-shaped column 12. The top of the special-shaped column 12 is fixedly connected to the top of the inner wall of the hollow column 8. When the hollow column 8 is rotated here, the special-shaped column 12 will be driven to rotate. The outside of the special-shaped column 12 is fixedly connected with a valve ball 13, and the bottom end of the rotating column 11 at the top is slidably connected to the inner wall of the top of the valve ball 13.

[0030] Reference Figure 2-Figure 3 The special-shaped column 12 here will drive the valve ball 13 to rotate when rotating, so as to switch between the three-hole mode and the two-hole mode, so as to achieve the purpose of controlling the natural gas intake rate. The bottom end of the valve ball 13 is rotatably connected to another rotating column 11, and the outer rotation of the rotating column 11 at the bottom is connected to the top of the inner wall of the gas pipe 7. The gas pipe 7 here provides a stable rotation space and supporting force for the bottom rotating column 11. The front and rear ends of the inner wall of the gas pipe 7 are fixedly connected with sealing gaskets 14. The sealing gaskets 14 here can prevent natural gas from leaking from the side.

[0031] Reference Figure 2-Figure 4 The outside of the valve ball 13 contacts the adjacent side of the two sealing pads 14, the bottom end of the special-shaped column 12 is fixedly connected with a bottom block 15, the outside of the bottom block 15 is slidably connected to the inner wall of the rotating column 11 at the bottom end, and the outside of the bottom block 15 is slidably connected to the bottom end of the inner wall of the gas pipeline 7. Here, a groove that only matches the shape of the bottom block 15 is opened at the bottom end of the inner wall of the gas pipeline 7. Only when the bottom block 15 is moved to the inner wall of the rotating column 11 at the bottom end can it be rotated, thereby rotating the valve ball 13 to adjust the intake rate of natural gas.

[0032] Reference Figure 2A sealing disk 16 is slidably connected to the right side of the inner wall of the gas delivery pipe 7. The natural gas here will flow from left to right through the hole of the valve ball 13. The thrust generated by the flow of natural gas will push the sealing disk 16 to slide to the right. A support block 17 is fixedly connected to the bottom end of the right side of the gas delivery pipe 7. The bottom end of the support block 17 is fixedly connected to the right side of the top end of the pipeline 1. The pipeline 1 here supports the support block 17 to stabilize it.

[0033] Reference Figure 2 and Figure 5 The support block 17 and the air inlet pipe 2 provide a stable supporting force for the gas delivery pipe 7, ensuring the stability of the device during the natural gas sampling process. The right side of the gas delivery pipe 7 is threadedly connected with a sampling pipe 18. When the natural gas pushes the sealing disk 16 to the right, the natural gas will gradually enter the interior of the sampling pipe 18. The outside of the sealing disk 16 is slidably connected to the inner wall of the sampling pipe 18. The right side of the sampling pipe 18 is provided with air outlets 19.

[0034] Reference Figure 2 and Figure 5 Here, the sealing disk 16 squeezes the air inside the sampling tube 18 and pushes it out from the air outlet 19 to the outside until the sealing disk 16 fits tightly against the right side of the sampling tube 18, and the multiple air outlets 19 are blocked. At this time, the valve hand 9 is operated and rotated 45 degrees to block the holes on both sides, thereby temporarily storing the natural gas on the right side of the gas pipeline 7 and in the sampling tube 18. At this time, the flowing natural gas in the pipeline 1 is closed, and the entire sampling device can be removed. At this point, the natural gas sampling work is completed.

[0035] Working principle: When using this sampling device, the staff can first fix the entire device on the top of the pipeline 1, and then release natural gas. The natural gas flows forward along the pipeline 1. When it moves to the bottom of this sampling device, the thrust of the natural gas flow will push the chassis 3 upward. When the chassis 3 is pushed up, it squeezes the air inside the intake pipe 2. When the air is squeezed, it further squeezes the sealing ring 5 and the top cover 6, and then drives the limit block 4 to move upward. At this time, the air inside the intake pipe 2 will slowly flow out from the gap between the upper sealing ring 5 and the intake pipe 2.

[0036] Because the flow thrust of natural gas is faster than the outflow speed of air, the chassis 3 will continue to rise until it contacts the bottom ends of the two limit blocks 4. At this time, the gas below the chassis 3 is pure natural gas. At this time, the natural gas will flow to the right along the gas pipeline 7. If you want to adjust the flow rate of natural gas at this time, you can first pull up the valve hand 9. The valve hand 9 further drives the empty column 8 and the special-shaped column 12 thereunder to move upward, and wait until the bottom end of the special-shaped column 12 and the bottom block 15 thereon move to the inside of the bottom rotating column 11.

[0037] At this time, the valve handle 9 can be turned, and the valve handle 9 will drive the valve ball 13 to rotate, switching the three-hole mode to the two-hole mode, slowing down the flow rate of natural gas, so as to ensure the most appropriate amount of natural gas to be sampled and reduce the waste of resources. Because of the presence of the spring 10, releasing the hand at this time will cause the bottom block 15 to fall and fall back into the special-shaped groove that only matches the bottom block 15, achieving a limiting effect. At this time, the natural gas passes through the hole in the middle of the valve ball 13.

[0038] At this time, the natural gas will further push the sealing disk 16 to move to the right. The working principle is the same as the above-mentioned steps of squeezing the air inside the intake pipe 2. The squeezed air will flow out along the four air outlets 19 on the right side of the sampling tube 18 until the sealing disk 16 contacts the rightmost side of the sampling tube 18. At this time, the valve hand 9 is turned 45 degrees. Because of the presence of the sealing gasket 14, when the valve hand 9 is rotated to 45 degrees, the three holes and the two holes on both sides can be blocked to prevent leakage of the sampled natural gas. At this time, the flowing natural gas inside the pipeline 1 is closed, and the device is removed to complete the sampling operation of the natural gas.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. 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 natural gas component analysis sampling device, comprising a pipeline (1), characterized in that: The left side of the top of the pipeline (1) is fixedly connected to an air intake pipe (2), the inner wall of the air intake pipe (2) is slidably connected to a chassis (3), the top of the inner wall of the air intake pipe (2) is slidably connected to two limit blocks (4), the tops of the two limit blocks (4) are fixedly connected to sealing rings (5), the top of the sealing ring (5) is fixedly connected to a top cover (6), the right side of the air intake pipe (2) is fixedly connected to an air supply pipe (7), the inner wall of the top of the air supply pipe (7) is slidably connected to an adjustment component, the right side of the inner wall of the air supply pipe (7) is slidably connected to a sealing disk (16), the bottom right side of the air supply pipe (7) is fixedly connected to a support block (17), the right side of the air supply pipe (7) is threadedly connected to a sampling pipe (18), and air outlets (19) are provided around the right side of the sampling pipe (18).

2. A natural gas component analysis sampling device according to claim 1, characterized in that: The regulating assembly comprises a hollow column (8), the bottom end of the hollow column (8) is slidably connected to the top inner wall of the gas pipe (7), the top end of the hollow column (8) is fixedly connected to a valve hand (9), a spring (10) is arranged inside the hollow column (8), the top end of the inner wall of the hollow column (8) is fixedly connected to a rotating column (11), the inner wall of the rotating column (11) is slidably connected to a special-shaped column (12), the outside of the special-shaped column (12) is fixedly connected to a valve ball (13), the bottom end of the valve ball (13) is rotatably connected to another rotating column (11), the front and rear ends of the inner wall of the gas pipe (7) are fixedly connected to sealing gaskets (14), and the bottom end of the special-shaped column (12) is fixedly connected to a bottom block (15).

3. A natural gas component analysis sampling device according to claim 2, characterized in that: One end of the spring (10) is fixedly connected to one side of the inner wall of the hollow column (8), and the other end of the spring (10) is fixedly connected to one side of the inner wall of the top end of the gas delivery pipe (7).

4. A natural gas component analysis sampling device according to claim 1, characterized in that: The outer side of the bottom end of the top cover (6) contacts the outer side of the top end of the air intake pipe (2), and the outer side of the sealing ring (5) is slidably connected to the top end of the inner wall of the air intake pipe (2).

5. A natural gas component analysis sampling device according to claim 2, characterized in that: The bottom end of the rotating column (11) at the top is slidably connected to the top inner wall of the valve ball (13), and the top end of the special-shaped column (12) is fixedly connected to the top inner wall of the hollow column (8).

6. A natural gas component analysis sampling device according to claim 2, characterized in that: The outside of the valve ball (13) contacts the adjacent sides of the two sealing pads (14), and the outside of the bottom block (15) is slidably connected to the bottom end of the inner wall of the gas delivery pipe (7).

7. A natural gas component analysis sampling device according to claim 2, characterized in that: The outside of the rotating column (11) at the bottom end is rotatably connected to the top of the inner wall of the gas delivery pipe (7), and the outside of the bottom block (15) is slidably connected to the inner wall of the rotating column (11) at the bottom end.

8. A natural gas component analysis sampling device according to claim 2, characterized in that: The outside of the sealing disk (16) is slidably connected to the inner wall of the sampling tube (18), and the bottom end of the supporting block (17) is fixedly connected to the right side of the top end of the pipeline (1).

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