Sampling device for sulfur-containing natural gas

Abstract

The utility model relates to the field of gas field production, in particular to a sulfur-containing natural gas sampling device which comprises a sampling bottle, the sampling bottle is provided with a piston, a sampling bottle valve and an atmosphere communication port, and the atmosphere communication port is provided with an atmosphere communication valve; the sampling joint is communicated with the sampling bottle valve, and a sampling joint valve is arranged between the sampling joint and the sampling bottle valve; the detection joint is communicated with the sampling bottle valve; a detection joint valve is arranged between the detection joint and the sampling bottle valve; the sulfur removal box is communicated with the sampling bottle valve, a sulfur removal box valve is arranged between the sulfur removal box and the sampling bottle valve, the sulfur removal box is provided with an exhaust port, and sulfur removal materials are contained in the sulfur removal box. The sulfur-containing natural gas in the sampling device is discharged into the atmosphere after being treated by the sulfur removal material in the sulfur removal box, so that the sulfur content in the natural gas is reduced, and the pollution to the atmospheric environment is reduced.

Description

Technical Field

[0001] This utility model relates to the field of gas field production, and in particular to a sampling device for sulfur-containing natural gas. Background Technology

[0002] In the production process of sulfur-containing gas wells, such as natural gas wells, it is necessary to regularly extract raw gas from the wellhead to test the content of hydrogen sulfide and various carbon hydrocarbon components, track the changing trends, and provide basic data for dynamic analysis of gas reservoir development, numerical simulation, and prediction of formation sulfur deposition.

[0003] Existing sampling devices lack a system for directly processing hydrogen sulfide. After sampling, pressurized sulfur-containing natural gas remains in the pipeline. Directly depressurizing and releasing this gas into the atmosphere poses a problem of atmospheric pollution. Furthermore, residual sulfur-containing natural gas remains in the pipelines and other components of the sampling device after depressurization. During device transfer and storage, this residual hydrogen sulfide slowly escapes, polluting the atmosphere and endangering the safety of sampling personnel. Existing sulfur-containing natural gas sampling devices also cannot perform accurate measurement, leading to over-sampling and waste. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing sampling devices, which allow sulfur-containing natural gas with a certain pressure in the pipeline to be directly discharged or slowly diffused into the atmosphere after sampling, leading to air pollution and endangering the safety of sampling personnel. This invention provides a sampling device for sulfur-containing natural gas.

[0005] This utility model provides a sampling device for sulfur-containing natural gas, comprising:

[0006] A sampling bottle, wherein the sampling bottle is equipped with a piston, a sampling bottle valve, and an atmospheric connection port, and the atmospheric connection port is equipped with an atmospheric connection valve;

[0007] A sampling connector is provided, which is connected to the sampling bottle valve, and a sampling connector valve is provided between the sampling connector and the sampling bottle valve;

[0008] A testing connector is provided, which is connected to the sampling bottle valve; a testing connector valve is provided between the testing connector and the sampling bottle valve.

[0009] A desulfurization box is connected to the sampling bottle valve. A desulfurization box valve is provided between the desulfurization box and the sampling bottle valve. The desulfurization box is provided with an exhaust port. The desulfurization box contains desulfurization materials.

[0010] This invention provides a sampling device for sulfur-containing natural gas. The sampling connector is used to connect to a gas well. By opening the sampling connector valve and the sampling bottle valve, and closing the detection connector valve, the natural gas to be sampled enters the sampling bottle through the sampling connector. The sampling bottle is used to store the natural gas sample. A piston can move up and down inside the sampling bottle, and the gas pressure difference between the upper and lower sides of the piston can push the piston up and down. When the atmospheric connection valve is open, the space below the piston inside the sampling bottle is connected to the atmosphere, ensuring that the gas pressure below the piston is the same as the external atmospheric pressure when the piston moves downwards. After sampling, closing the sampling bottle valve and the atmospheric connection valve closes the space below the piston inside the sampling bottle, ensuring that the gas pressure on both sides of the piston is stable, facilitating the storage and transfer of the gas sample. The detection connector is used to connect to a detection device. By opening the sampling bottle valve and the detection connector valve, and closing the sampling connector valve, the sampled gas can enter the detection device through the detection connector. After sampling, the desulfurization tank valve and the sampling bottle valve are opened, and the detection connector valve is closed. The pressurized sulfur-containing natural gas between the sampling connector valve and the detection connector valve passes through the desulfurization tank and is then discharged into the atmosphere through the exhaust port. The desulfurization tank contains desulfurization materials, which can separate hydrogen sulfide from the natural gas through adsorption, oxidation, or neutralization reactions, thereby reducing the sulfur content in the natural gas and reducing pollution to the atmospheric environment.

[0011] The desulfurization material can be activated carbon, an oxidant, or an alkaline solution that can neutralize hydrogen sulfide. Activated carbon has a very high surface area and porous structure, which allows it to effectively adsorb hydrogen sulfide molecules in the gas. Oxidants such as hydrogen peroxide oxidize the sulfur element in hydrogen sulfide from -2 oxidation state to 0 oxidation state, forming elemental sulfur.

[0012] Preferably, the desulfurization tank is equipped with a perforated nozzle, which is connected to the desulfurization tank valve via a pipeline. The perforated nozzle has many small holes, which can increase the contact area between the sulfur-containing natural gas and the desulfurization material, improve the desulfurization efficiency, and more effectively remove hydrogen sulfide from the natural gas.

[0013] Preferably, the desulfurization material is a desulfurization solution. Examples of desulfurization solutions include hydrogen peroxide and alkaline solutions that can neutralize hydrogen sulfide. Solution-based desulfurization materials offer more efficient reaction rates, are easier to operate, and provide better and more convenient desulfurization results.

[0014] Preferably, the desulfurization solution is a sodium hydroxide or calcium hydroxide solution. Both sodium hydroxide and calcium hydroxide solutions are alkaline solutions, and the reaction between alkaline solutions and hydrogen sulfide can proceed more thoroughly, ensuring effective removal of hydrogen sulfide. Alkaline solutions are generally inexpensive and readily available and recyclable, reducing treatment costs.

[0015] Preferably, the sampling device for sulfur-containing natural gas further includes a gas cylinder equipped with a first gas cylinder valve. The first gas cylinder valve is connected to the sampling connector valve and the sampling bottle. When the first gas cylinder valve is opened and the sampling connector valve and the atmospheric connection valve are closed, the gas flowing from the gas cylinder can enter the sampling device pipeline and the sampling bottle. The gas cylinder is used to store compressed gas, which can be compressed air or compressed nitrogen. The compressed gas can be used to displace the sulfur-containing natural gas in the sampling device pipeline and the sampling bottle, transferring the sulfur-containing natural gas to a desulfurization tank for treatment. This prevents hydrogen sulfide from slowly escaping during subsequent transfer and storage of the entire sampling device, thus endangering the safety of the sampling operators.

[0016] Preferably, a second gas cylinder valve is provided between the sampling connector valve and the first gas cylinder valve, and a third gas cylinder valve is provided between the atmospheric connection valve and the first gas cylinder valve. When the first gas cylinder valve and the second gas cylinder valve are opened, and the sampling connector valve and the third gas cylinder valve are closed, the gas flowing out of the gas cylinder can enter the sampling device pipeline. When the first gas cylinder valve and the third gas cylinder valve are opened, and the second gas cylinder valve and the atmospheric connection valve are closed, the gas flowing out of the gas cylinder can enter the sampling bottle.

[0017] Preferably, the sampling bottle is equipped with a measurement observation window, which has a scale value. By observing the movement position of the piston through the measurement observation window, the gas sample volume can be read in real time. When the gas volume in the sampling bottle reaches the required amount, the valve of the sampling bottle is closed in time, which can achieve the function of accurate measurement of gas sample and avoid over-sampling.

[0018] Preferably, a pressure-reducing system is provided between the sampling connector valve and the sampling bottle valve. The pressure-reducing system can achieve single-stage or multi-stage pressure reduction, meeting the requirements of low-pressure sampling and metering conditions, and also expanding the application range of the sampling device, making it suitable for more gas wells with different pressures.

[0019] Preferably, the pressure reduction system includes a primary pressure regulating valve, a secondary pressure regulating valve, and a tertiary pressure regulating valve.

[0020] Preferably, a first valve is provided between the primary pressure regulating valve and the secondary pressure regulating valve, a second valve is provided between the primary pressure regulating valve and the sampling bottle valve, a third valve is provided between the secondary pressure regulating valve and the tertiary pressure regulating valve, a fourth valve and a fifth valve are provided between the secondary pressure regulating valve and the sampling bottle valve, and a sixth valve is provided between the tertiary pressure regulating valve and the fourth valve.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] 1. This utility model provides a sampling device for sulfur-containing natural gas. The pressurized sulfur-containing natural gas in the sampling device is passed through a desulfurization box before being discharged into the atmosphere. The desulfurization box contains desulfurization material, which can separate hydrogen sulfide from the natural gas through adsorption, oxidation, or neutralization reactions. This effectively reduces the sulfur content in the natural gas, reduces pollution to the atmospheric environment, and avoids endangering the safety of sampling personnel. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a sampling device for sulfur-containing natural gas.

[0024] Marked in the image:

[0025] 1-Sampling connector,

[0026] 2-Sampling connector valve,

[0027] 3-First stage pressure regulating valve,

[0028] 4-First valve,

[0029] 5- Secondary pressure regulating valve,

[0030] 6-Third valve,

[0031] 7-Three-stage pressure regulating valve,

[0032] 8-Sixth valve,

[0033] 9-Fourth valve,

[0034] 10-Fifth valve,

[0035] 11-Second valve,

[0036] 12-Gas Cylinder

[0037] 13-First gas cylinder valve,

[0038] 14-Second gas cylinder valve,

[0039] 15-Third gas cylinder valve,

[0040] 16-Atmospheric connection valve,

[0041] 17-Atmospheric vent,

[0042] 18-Seventh valve,

[0043] 19-Eighth valve,

[0044] 20-Sampling bottle valve,

[0045] 21-Sampling bottle,

[0046] 22- Measurement observation window,

[0047] 23-Piston,

[0048] 24-Desulfurization box valve,

[0049] 25-Desulfurization box,

[0050] 26-Multi-hole nozzle,

[0051] 27-Desulfurization materials,

[0052] 28 - Exhaust port

[0053] 29-Inspect the valve joint.

[0054] 30 - Test connector. Detailed Implementation

[0055] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0056] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0057] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0058] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0059] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0060] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0061] Example 1

[0062] like Figure 1 As shown, a sampling device for sulfur-containing natural gas includes a sampling bottle 21, a piston 23, a sampling bottle valve 20, an atmospheric connection port 17, an atmospheric connection valve 16, a sampling connector 1, a sampling connector valve 2, a detection connector 30, a detection connector valve 29, a desulfurization box 25, a desulfurization box valve 24, an exhaust port 28, and a desulfurization material 27.

[0063] The sampling bottle 21 is equipped with a piston 23, a sampling bottle valve 20, and an atmospheric connection port 17, which is equipped with an atmospheric connection valve 16. The piston 23 divides the internal space of the sampling bottle 21 into two parts: an upper chamber and a lower chamber. The part near the sampling bottle valve 20 is the upper chamber, which is used to store the sampling gas.

[0064] Sampling connector 1 is connected to sampling bottle valve 20, and sampling connector valve 2 is provided between sampling connector 1 and sampling bottle valve 20. Sampling connector 1 is used to connect to a natural gas well and send the sulfur-containing natural gas to be sampled into the sampling device.

[0065] The detection connector 30 is connected to the sampling bottle valve 20; a detection connector valve 29 is provided between the detection connector 30 and the sampling bottle valve 20. The detection connector 30 is used to connect to the detection device and send the sampled gas into the detection device.

[0066] A desulfurization tank 25 is connected to the sampling bottle valve 20. A desulfurization tank valve 24 is provided between the desulfurization tank 25 and the sampling bottle valve 20. The desulfurization tank 25 is equipped with an exhaust port 28 and contains desulfurization material 27. The desulfurization material 27 can separate hydrogen sulfide from natural gas through adsorption, oxidation, or neutralization reactions, thereby reducing the sulfur content in natural gas and reducing pollution to the atmospheric environment.

[0067] In an optional embodiment, the desulfurization tank 25 is equipped with a perforated nozzle 26, which is connected to the desulfurization tank valve 24 via a pipeline. The perforated nozzle 26 has many small holes, which can increase the contact area between the sulfur-containing natural gas and the desulfurization material 27, improve the desulfurization efficiency, and more effectively remove hydrogen sulfide from the natural gas.

[0068] In an optional embodiment, the desulfurizing material 27 can be a desulfurization solution. The desulfurization solution may be, for example, hydrogen peroxide, or an alkaline solution capable of neutralizing hydrogen sulfide. The solution form of the desulfurizing material 27 offers a more efficient reaction rate, is easier to operate, and provides better and more convenient desulfurization. Piping connected to the inside of the desulfurization tank 25 needs to be immersed in the desulfurization solution to better increase the contact area between the desulfurization solution and the sulfur-containing natural gas, thereby improving reaction efficiency and effectiveness.

[0069] In an optional embodiment, the desulfurization solution may be a sodium hydroxide or calcium hydroxide solution.

[0070] In an optional embodiment, a gas cylinder 12 may be included. The gas cylinder 12 is equipped with a first gas cylinder valve 13, which is connected to the sampling connector valve 2 and the sampling bottle 21. When the first gas cylinder valve 13 is opened and the sampling connector valve 2 and the atmospheric connection valve 16 are closed, the gas flowing out of the gas cylinder 12 can enter the sampling device pipeline and the sampling bottle 21. Specifically, the side of the sampling connector valve 2 away from the sampling connector 1 and the side of the atmospheric connection valve 16 near the sampling bottle 21 are both connected to the side of the first gas cylinder valve 13 away from the gas cylinder 12. The gas cylinder 12 may store compressed gas, which can be compressed air or compressed nitrogen. This compressed gas can be used to displace the sulfur-containing natural gas in the sampling device pipeline and the sampling bottle 21, transferring the sulfur-containing natural gas to the desulfurization tank 25 for treatment.

[0071] In an optional embodiment, a second gas cylinder valve 14 may be provided between the sampling connector valve 2 and the first gas cylinder valve 13, and a third gas cylinder valve 15 may be provided between the atmospheric connection valve 16 and the first gas cylinder valve 13. When the first gas cylinder valve 13 and the second gas cylinder valve 14 are opened, and the sampling connector valve 2 and the third gas cylinder valve 15 are closed, the gas flowing out of the gas cylinder 12 can enter the sampling device pipeline, thereby displacing the sulfur-containing natural gas in the sampling device pipeline. When the first gas cylinder valve 13 and the third gas cylinder valve 15 are opened, and the second gas cylinder valve 14 and the atmospheric connection valve 16 are closed, the gas flowing out of the gas cylinder 12 can enter the lower chamber of the sampling bottle 21, pushing the piston 23 upward, thereby displacing the sulfur-containing natural gas in the upper chamber of the sampling bottle 21.

[0072] In an optional embodiment, the sampling bottle 21 may be provided with a measurement observation window 22, which has a scale value. By observing the scale value corresponding to the piston 23, the volume value of the sampled gas can be determined.

[0073] In an optional embodiment, a pressure-reducing system may be provided between the sampling connector valve 2 and the sampling bottle valve 20. When the pressure in the natural gas well is high, excessive pressure may damage the sampling device's pipeline or the gas cylinder 12. The pressure-reducing system can gradually reduce the gas pressure entering the gas cylinder 12, which is beneficial for controlling the gas flow rate and facilitating accurate sampling.

[0074] In an optional implementation, the pressure reduction system may include a primary pressure regulating valve 3, a secondary pressure regulating valve 5, and a tertiary pressure regulating valve 7. Each pressure regulating valve can reduce the gas pressure passing through it.

[0075] In an optional embodiment, a first valve 4 may be provided between the primary pressure regulating valve 3 and the secondary pressure regulating valve 5; a second valve 11 may be provided between the primary pressure regulating valve 3 and the sampling bottle valve 20; a third valve 6 may be provided between the secondary pressure regulating valve 5 and the tertiary pressure regulating valve 7; a fourth valve 9 and a fifth valve 10 may be provided between the secondary pressure regulating valve 5 and the sampling bottle valve 20; and a sixth valve 8 may be provided between the tertiary pressure regulating valve 7 and the fourth valve 9. This embodiment can activate one or more pressure regulating valves according to different pressures in the natural gas well.

[0076] Example 2

[0077] The following is combined with Figure 1 The implementation method of the voltage reduction system of this utility model will be described.

[0078] During sampling, first connect sampling connector 1 to the wellhead of the natural gas well, open sampling connector valve 2, and close the second gas cylinder valve 14, allowing sulfur-containing natural gas to enter the pressure reduction system. When the second valve 11 is opened and the first valve 4 and the fourth valve 9 are closed, only the primary pressure regulating valve 3 is in use, achieving the primary pressure reduction function. Opening the first valve 4, the fourth valve 9, and the fifth valve 10, and closing the third valve 6, the sixth valve 8, and the second valve 11, allows the primary pressure regulating valve 3 and the secondary pressure regulating valve 5 to be used in series, achieving the secondary pressure reduction function. Opening the first valve 4, the third valve 6, the sixth valve 8, and the fourth valve 9, and closing the fifth valve 10 and the second valve 11, allows the primary pressure regulating valve 3, the secondary pressure regulating valve 5, and the tertiary pressure regulating valve 7 to be used in series, achieving the tertiary pressure reduction function. The opening and closing status of each valve in the pressure reduction system is adjusted according to the wellhead pressure of the natural gas well to achieve single-stage or multi-stage pressure reduction functions.

[0079] Example 3

[0080] The following is combined with Figure 1 The method of measuring gas samples using the sampling device of this utility model is described.

[0081] The sampling bottle 21 can be a cylindrical body with a piston 23 that can move up and down inside. A measuring observation window 22, which can be made of transparent plexiglass, is embedded in the cylinder for observing the position of the piston 23. The measuring observation window 22 has graduations for accurately measuring the sampling gas volume. Before sampling, the piston 23 is placed on top of the sampling bottle 21. Then, the atmospheric connection valve 16, the seventh valve 18, and the sampling bottle valve 20 are opened, while the third gas cylinder valve 15 and the eighth valve 19 are closed. The gas sample, after passing through a multi-stage pressure regulating system, first enters the upper chamber inside the sampling bottle 21 and, relying on the gas pressure, pushes the piston 23 downwards. The lower chamber inside the sampling bottle 21 is connected to the outside atmosphere through the atmospheric connection port 17, and the gas in the lower chamber is discharged into the atmosphere. As piston 23 moves downward, the scale value corresponding to piston 23 is observed in real time through the metering observation window 22. When piston 23 reaches the predetermined scale value, the atmospheric connection valve 16, sampling bottle valve 20, and sampling connector valve 2 are closed, and the connection between sampling connector 1 and the wellhead of the natural gas well is disconnected, thus ending the sampling process. It should be noted that the predetermined scale value is the amount of gas to be sampled. Because the lower chamber is directly connected to the outside atmosphere during sampling, the gas sample pressure in the upper chamber is the same as the atmospheric pressure during sampling.

[0082] Example 4

[0083] The following is combined with Figure 1 The present invention describes the method of replacing sulfur in pressurized sulfur-containing natural gas in the sampling device pipeline.

[0084] The desulfurization tank 25 contains a sufficient amount of desulfurization material 27, which can be a sodium hydroxide solution, used to remove hydrogen sulfide from sulfur-containing natural gas. The porous nozzle 26 at the bottom of the solution has many small holes, allowing the sulfur-containing natural gas to generate a large number of small bubbles in the sodium hydroxide solution, increasing the contact area between hydrogen sulfide and the sodium hydroxide solution, and improving the desulfurization effect. After sampling, the desulfurization tank valve 24 is first opened, allowing the sulfur-containing natural gas to enter the porous nozzle 26 through the pipeline. The small holes disperse the sulfur-containing natural gas into numerous small bubbles, allowing them to fully contact the sodium hydroxide solution, neutralizing and absorbing the hydrogen sulfide. The chemical reaction is as follows: or In the desulfurization tank 25, natural gas does not react with the sodium hydroxide solution and is discharged through the exhaust port 28 at the top of the desulfurization tank 25. This sampling device, through the desulfurization tank 25 and the desulfurization material 27, ensures that the natural gas emitted into the atmosphere contains almost no toxic hydrogen sulfide, making it environmentally friendly and conducive to ensuring the safe and smooth conduct of sampling operations.

[0085] Example 5

[0086] The following is combined with Figure 1The method of removing sulfur by replacing residual gas inside the sampling device of this utility model is described.

[0087] Cylinder 12 is filled with nitrogen gas at a certain pressure to purge the residual sulfur-containing natural gas in the sampling device. After sampling, valves 2 (sampling connector), 15 (third cylinder), 20 (sampling bottle), and 29 (detection connector) are closed. Valves 13 (first cylinder), 14 (second cylinder), 18 (seventh valve), 19 (eighth valve), and 24 (desulfurization box) are opened. High-pressure nitrogen gas flows out from nitrogen cylinder 12 to purge the residual sulfur-containing natural gas in the sampling device pipeline and depressurization system. Then, the gas passes through the desulfurization material 27 in the desulfurization box 25 to remove hydrogen sulfide from the gas. After gas sample testing is completed, if the upper chamber inside sampling bottle 21 contains remaining sulfur-containing natural gas, close the second gas cylinder valve 14, the atmospheric connection valve 16, the seventh valve 18, and the test connector valve 29. Open the first gas cylinder valve 13, the third gas cylinder valve 15, the eighth valve 19, the sampling bottle valve 20, and the desulfurization box valve 24. High-pressure nitrogen flows out from gas cylinder 12 and enters the lower chamber inside sampling bottle 21, pushing piston 23 upward and pushing the remaining sulfur-containing natural gas in the upper chamber inside sampling bottle 21 into the desulfurization box 25. The hydrogen sulfide in the natural gas is then removed by the desulfurization material 27. This residual gas replacement method removes residual hydrogen sulfide from the depressurization system and the remaining sulfur-containing natural gas in sampling bottle 21, preventing hydrogen sulfide from slowly escaping during subsequent transfer and storage of the sampling device and endangering the safety of sampling operators.

[0088] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sampling device for sulfur-containing natural gas, characterized in that, include: The sampling bottle (21) is provided with a piston (23), a sampling bottle valve (20) and an atmospheric connection port (17), and the atmospheric connection port (17) is provided with an atmospheric connection valve (16). Sampling connector (1), the sampling connector (1) is connected to the sampling bottle valve (20), and a sampling connector valve (2) is provided between the sampling connector (1) and the sampling bottle valve (20). A test connector (30) is provided between the test connector (30) and the sampling bottle valve (20), and a test connector valve (29) is provided between the test connector (30) and the sampling bottle valve (20). A desulfurization box (25) is connected to the sampling bottle valve (20). A desulfurization box valve (24) is provided between the desulfurization box (25) and the sampling bottle valve (20). The desulfurization box (25) is provided with an exhaust port (28). The desulfurization box (25) contains desulfurization materials (27).

2. The sampling device for sulfur-containing natural gas according to claim 1, characterized in that, The desulfurization box (25) is equipped with a multi-hole nozzle (26), which is connected to the desulfurization box valve (24) through a pipeline.

3. The sampling device for sulfur-containing natural gas according to claim 2, characterized in that, The desulfurization material (27) is a desulfurization solution.

4. The sampling device for sulfur-containing natural gas according to claim 3, characterized in that, The desulfurization solution is a sodium hydroxide or calcium hydroxide solution.

5. A sampling device for sulfur-containing natural gas according to claim 1, characterized in that, It also includes a gas cylinder (12), which is equipped with a first gas cylinder valve (13). The first gas cylinder valve (13) is connected to the sampling connector valve (2) and the sampling bottle (21). When the first gas cylinder valve (13) is opened and the sampling connector valve (2) and the atmospheric connection valve (16) are closed, the gas flowing out of the gas cylinder (12) can enter the sampling device pipeline and the sampling bottle (21).

6. A sampling device for sulfur-containing natural gas according to claim 5, characterized in that, A second gas cylinder valve (14) is provided between the sampling connector valve (2) and the first gas cylinder valve (13), and a third gas cylinder valve (15) is provided between the atmospheric connection valve (16) and the first gas cylinder valve (13). When the first gas cylinder valve (13) and the second gas cylinder valve (14) are opened, and the sampling connector valve (2) and the third gas cylinder valve (15) are closed, the gas flowing out of the gas cylinder (12) can enter the sampling device pipeline. When the first gas cylinder valve (13) and the third gas cylinder valve (15) are opened, and the second gas cylinder valve (14) and the atmospheric connection valve (16) are closed, the gas flowing out of the gas cylinder (12) can enter the sampling bottle (21).

7. A sampling device for sulfur-containing natural gas according to any one of claims 1-6, characterized in that, The sampling bottle (21) is provided with a measurement observation window (22), and the measurement observation window (22) is provided with a scale value.

8. A sampling device for sulfur-containing natural gas according to claim 7, characterized in that, A pressure reduction system is provided between the sampling connector valve (2) and the sampling bottle valve (20).

9. A sampling device for sulfur-containing natural gas according to claim 8, characterized in that, The pressure reduction system includes a primary pressure regulating valve (3), a secondary pressure regulating valve (5), and a tertiary pressure regulating valve (7).

10. A sampling device for sulfur-containing natural gas according to claim 9, characterized in that, A first valve (4) is provided between the first-stage pressure regulating valve (3) and the second-stage pressure regulating valve (5). A second valve (11) is provided between the first-stage pressure regulating valve (3) and the sampling bottle valve (20). A third valve (6) is provided between the second-stage pressure regulating valve (5) and the third-stage pressure regulating valve (7). A fourth valve (9) and a fifth valve (10) are provided between the second-stage pressure regulating valve (5) and the sampling bottle valve (20). A sixth valve (8) is provided between the third-stage pressure regulating valve (7) and the fourth valve (9).

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