A sampling device and sampling method for simulating the sampling of a raw gas gathering and transportation system

Abstract

This invention discloses a sampling device and method for simulating sampling in a raw gas gathering and transportation system, relating to the technical field of gas field gathering and transportation systems. The sampling device includes: a multiphase fluid blending component for blending gas, liquid, and solid three-phase fluids to output a sample medium; a simulated sampling pipeline including a circulating pipeline with a closed polygonal layout, wherein each flow section of the circulating pipeline is connected in series with a sampling pipeline, and each sampling pipeline has multiple sampling points; and a sample collection and processing component for collecting and processing the medium taken from the sampling points of the sampling pipeline, capable of simulating the influence of different gas-liquid-solid contents, different pipeline characteristics, different sampling depths, sampling times, and other parameters of the raw gas gathering and transportation system on the representativeness of the sample. The sampling method is based on the aforementioned sampling device for simulating sampling in a raw gas gathering and transportation system.

Description

Technical Field

[0001] This invention relates to the field of gas field gathering and transportation system technology, and specifically to a sampling device and sampling method that simulates sampling in a raw gas gathering and transportation system. Background Technology

[0002] The separation and filtration efficiency of natural gas gathering and transmission systems has a significant impact on ground equipment. Incomplete separation of the solid-liquid two-phase flow of feed gas will affect the safe and efficient operation of the ground system. Furthermore, the presence of solid particles and droplets often leads to equipment jamming, blockage, wall thinning, abnormal wear, and even leaks and explosions, seriously affecting the safe and efficient operation of the ground system. Therefore, understanding the distribution patterns of the solid and liquid phases in the natural gas gathering and transmission system and taking representative samples of the solid and liquid media is a crucial step in determining the operating efficiency of the feed gas separation and filtration equipment, and is of great significance for optimizing processes and improving system safety.

[0003] However, the multiphase fluid media in the feed gas gathering and transportation system have diverse components and complex transport patterns, making it difficult to obtain fluids that can truly represent the flow state and solid-liquid content of the media within the gathering and transportation system from limited sampling points. Summary of the Invention

[0004] To address the technical problem that existing feed gas gathering and transportation systems struggle to obtain fluid samples that accurately represent the flow state and solid-liquid two-phase content of the medium within the system, this invention provides a sampling device and method that simulates sampling in a feed gas gathering and transportation system. This method simulates the impact of different gas-liquid-solid contents, pipeline characteristics, sampling depths, and sampling times on sample representativeness, facilitating the determination of optimal sampling points and parameters. This provides a basis for representative sampling of the solid-liquid two-phase medium in gas field feed gas gathering and transportation systems, as well as for accurate evaluation of the operating status and efficiency of separation and filtration equipment.

[0005] This invention is achieved through the following technical solution:

[0006] In a first aspect, the present invention provides a sampling device for simulating sampling in a raw material gas gathering and transportation system, comprising: a multiphase fluid blending component for blending gas, liquid, and solid three-phase fluids to output a sample medium; a simulated sampling pipeline including a circulating pipeline having a closed polygonal layout, wherein each flow section of the circulating pipeline is connected in series with a sampling pipeline, and each sampling pipeline is provided with multiple sampling points; and a sample collection and processing component for collecting and processing the medium taken from the sampling points of the sampling pipeline.

[0007] The sampling device for simulating a raw material gas gathering and transportation system provided by the present invention includes a multiphase fluid blending component, a simulated sampling pipeline, and a sample collection and processing component. The multiphase fluid blending component is used to blend gas, liquid, and solid three-phase fluids to simulate media with different gas, liquid, and solid contents in the raw material gas gathering and transportation system. The simulated sampling pipeline includes a circulating pipeline with a closed polygonal layout, and each flow section of the circulating pipeline is connected in series with a sampling pipeline. Each sampling pipeline is equipped with multiple sampling points to simulate sample sampling corresponding to different pipeline characteristics, different sampling depths, and different sampling times. The sample collection and processing component can collect and process the medium taken from the sampling points of the sampling pipeline.

[0008] Therefore, the sampling device for simulating the sampling of a raw gas gathering and transportation system provided by the present invention can simulate the influence of different gas-liquid-solid contents, different pipeline characteristics, different sampling depths, sampling times and other parameters of the raw gas gathering and transportation system on the representativeness of the sample, so as to determine the optimal sampling point and sampling parameters, and provide a basis for the representative sampling of solid-liquid two-phase media in the gas field raw gas gathering and transportation system, and the accurate evaluation of the operating status and efficiency of separation and filtration equipment.

[0009] In an optional embodiment of this application, the multiphase fluid blending assembly includes: a gas conveying fan for conveying test gas; a blending pipe with its inlet end connected to the outlet end of the gas conveying fan; a droplet generator with its output end connected to the inner cavity of the blending pipe; and a particle oscillation generator with its output end connected to the inner cavity of the blending pipe, to ensure that the multiphase fluid blending assembly can blend a sample medium of gas, liquid, and solid three-phase fluids.

[0010] In an optional embodiment of this application, the multiphase fluid blending component further includes a foaming machine, the output end of which is connected to the inner cavity of the blending pipe, so that the multiphase fluid blending component can blend a sample medium containing a three-phase fluid of gas, liquid and solid containing foam, which facilitates the medium flow law of the model foam working condition.

[0011] In an optional embodiment of this application, the multiphase fluid blending assembly further includes a gas flow meter connected in series at the output end of the gas conveying blower to monitor the flow rate of natural gas entering the blending assembly.

[0012] In an optional embodiment of this application, the circulating pipeline includes a front horizontal pipe section, a front vertical pipe section, a middle horizontal pipe section, a rear vertical pipe section, and a rear horizontal pipe section connected in sequence, and the front horizontal pipe section, the front vertical pipe section, the middle horizontal pipe section, the rear vertical pipe section, and the rear horizontal pipe section are all connected in series with the sampling pipeline to simulate the medium flow in different pipe sections.

[0013] In an optional embodiment of this application, the input and output sections of the front horizontal pipe section, the front vertical pipe section, the middle horizontal pipe section, the rear vertical pipe section, and the rear horizontal pipe section are all connected in series with the sampling pipeline, so as to facilitate observation of the influence of different arrangement of bends on the representativeness of fluid samples taken near the bend.

[0014] In an optional embodiment of this application, a vent separator is connected in series at the output end of the circulating pipeline. The vent separator is used to separate gas, liquid, and solid three-phase fluids so as to filter out and recover liquid and solid impurities mixed in natural gas.

[0015] In an optional embodiment of this application, the sample collection and processing assembly includes: a sampling valve for controlling the on / off state of each sampling point; a media distributor connected to the output end of the sampling valve; an online separation assembly, the input section of which is connected to a media output end of the media distributor, the online separation assembly being used for online separation of the sampling media; and a bypass sampling assembly, the input section of which is connected to another media output end of the media distributor, the bypass sampling assembly being used to collect the sampling media, so that the sample collection and processing assembly can collect the acquired samples and perform online separation of the samples.

[0016] In an optional embodiment of this application, the sample collection and processing assembly further includes a plurality of sampling connectors, each of which is used to connect to a corresponding sampling point, and the output section of each of the sampling connectors is connected to the input end of the sampling valve, so as to connect the sampling valve to the corresponding sampling point.

[0017] In an optional embodiment of this application, each of the sampling pipelines is provided with three sets of sampling points. The three sets of sampling points are arranged at intervals along the circumference of the corresponding sampling pipeline, and the sampling points in each set are arranged at intervals along the length of the corresponding sampling pipeline, so as to simulate multiple sampling levels.

[0018] In an optional embodiment of this application, the phase angle between two adjacent sets of sampling points on each of the sampling pipelines is 45°, so that the sampling points can be vertically distributed.

[0019] In an optional embodiment of this application, the online separation component includes a magnetic separator, an online membrane separator, and an online separation flow meter connected in sequence to ensure that the online separation component can perform online separation.

[0020] In an optional embodiment of this application, the output end of the online separation flow meter is connected to an online separation pressure reducing valve to reduce the pressure of the sample medium after online separation, so as to facilitate the collection of the sampled gas.

[0021] In an optional embodiment of this application, the bypass sampling assembly includes a bypass valve, a sampling storage device, a first bypass flow meter, a bypass membrane separator, and a second bypass flow meter connected in sequence to ensure that the bypass sampling assembly can perform storage sampling and can calculate the amount of stored sample medium.

[0022] In an optional embodiment of this application, the output end of the second bypass flow meter is connected to a bypass pressure reducing valve to facilitate the collection of sampled gas.

[0023] Secondly, the present invention provides a sampling method for simulating a feed gas gathering and transportation system, based on the above-mentioned sampling device for simulating a feed gas gathering and transportation system, comprising the following steps:

[0024] Connect the sampling connector within the sample collection and processing assembly to the corresponding sampling point;

[0025] Turn on the gas delivery fan, droplet generator, particulate matter oscillation generator, and foaming machine in sequence;

[0026] Open or close the valve of the corresponding sampling connector according to the sampling requirements;

[0027] Open the sampling valve and adjust the media dispenser to determine the sampling mode.

[0028] The sampling method for simulating feed gas gathering and transportation systems provided by this invention, based on the aforementioned sampling device for simulating feed gas gathering and transportation systems, involves connecting the sampling connector within the sample collection and processing component to the corresponding sampling point, then sequentially turning on the gas delivery fan, droplet generator, particle oscillation generator, and bubbler. Next, according to sampling requirements, the valves of the corresponding sampling connectors are opened or closed. Finally, the sampling valve is opened, and the medium distributor is adjusted to determine the sampling mode. This method can simulate the influence of different gas-liquid-solid contents, different pipeline characteristics, different sampling depths, and sampling times on the representativeness of the sample in a feed gas gathering and transportation system. This facilitates the determination of optimal sampling points and parameters, providing a basis for representative sampling of solid-liquid two-phase media in gas field feed gas gathering and transportation systems, and for accurately evaluating the operating status and efficiency of separation and filtration equipment.

[0029] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0030] 1. The sampling device for simulating sampling in a raw gas gathering and transportation system provided by the present invention includes a multiphase fluid blending component, a simulated sampling pipeline, and a sample collection and processing component. The multiphase fluid blending component is used to blend gas, liquid, and solid three-phase fluids to simulate media with different gas, liquid, and solid contents in the raw gas gathering and transportation system. The simulated sampling pipeline includes a circulating pipeline with a closed polygonal layout, and each flow section of the circulating pipeline is connected in series with a sampling pipeline. Each sampling pipeline is equipped with multiple sampling points to simulate sample sampling corresponding to different pipeline characteristics, different sampling depths, and different sampling times. The sample collection and processing component can collect and process the medium taken from the sampling points of the sampling pipeline, and can simulate the influence of different gas, liquid, and solid contents, different pipeline characteristics, different sampling depths, and sampling times in the raw gas gathering and transportation system on the representativeness of the sample, so as to determine the optimal sampling point and sampling parameters, and provide a basis for representative sampling of solid and liquid two-phase media in the gas field raw gas gathering and transportation system, and accurate evaluation of the operating status and efficiency of separation and filtration equipment.

[0031] 2. The sampling method for simulating raw gas gathering and transportation system sampling provided by this invention, based on the above-mentioned sampling device for simulating raw gas gathering and transportation system sampling, involves connecting the sampling connector in the sample collection and processing component to the corresponding sampling point, then sequentially turning on the gas conveying fan, droplet generator, particle oscillation generator, and bubbler. Next, according to sampling requirements, the valves of the corresponding sampling connectors are opened or closed. Finally, the sampling valve is opened, and the medium distributor is adjusted to determine the sampling mode. This method can simulate the influence of different gas-liquid-solid contents, different pipeline characteristics, different sampling depths, sampling times, and other parameters of the raw gas gathering and transportation system on the representativeness of the sample, facilitating the determination of the optimal sampling point and sampling parameters. This provides a basis for the representative sampling of solid-liquid two-phase media in the gas field raw gas gathering and transportation system, and for the accurate evaluation of the operating status and efficiency of separation and filtration equipment. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0033] In the attached diagram:

[0034] Figure 1 A schematic diagram of the pipeline principle of a sampling device for sampling a simulated raw gas gathering and transportation system provided in an embodiment of the present invention;

[0035] Figure 2 This is a schematic diagram of the sampling pipeline structure according to an embodiment of the present invention;

[0036] Figure 3This is a schematic diagram showing the distribution of the sampling connectors according to an embodiment of the present invention;

[0037] Figure 4 This is a schematic diagram of the depth settings of the sampling connector heads in various embodiments of the present invention.

[0038] The attached diagram shows the markings and corresponding component names:

[0039] 10-Multiphase fluid blending component, 11-Gas conveying fan, 12-Blending pipeline, 13-Droplet generator, 14-Particle oscillation generator, 15-Foamer, 16-Gas flow meter;

[0040] 20-Simulation sampling pipeline, 21-Circulation pipeline, 21a-Front horizontal pipeline section, 21b-Front vertical pipeline section, 21c-Middle horizontal pipeline section, 21d-Rear vertical pipeline section, 21e-Rear horizontal pipeline section, 22-Sampling pipeline, 23-Evacuation separator;

[0041] 30-Sample collection and processing assembly, 31-Sampling valve, 32-Media distributor, 33-Online separation assembly, 33a-Magnetic separator, 33b-Online membrane separator, 33c-Online separation flow meter, 33d-Online separation pressure reducing valve, 34-Bypass sampling assembly, 34a-Bypass valve, 34b-Sampling storage unit, 34c-First bypass flow meter, 34d-Bypass membrane separator, 34e-Second bypass flow meter, 34f-Bypass pressure reducing valve, 35-Sampling connector. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0044] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0045] In the description of this application, it should be noted that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this application is usually placed when in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0046] Example 1

[0047] Combination Figure 1 This invention provides a sampling device for simulating sampling in a raw material gas gathering and transportation system, comprising: a multiphase fluid blending component 10, which is used to blend gas, liquid, and solid three-phase fluids to output a sample medium; a simulated sampling pipeline 20, which includes a circulating pipeline 21, which has a closed polygonal layout, and each flow section of the circulating pipeline 21 is connected in series with a sampling pipeline 22, and each sampling pipeline 22 is provided with multiple sampling points; and a sample collection and processing component 30, which is used to collect and process the medium taken from the sampling points of the sampling pipeline 22.

[0048] It is understood that the multiphase fluid blending assembly 10 includes: a gas conveying fan 11 for conveying test gas; a blending pipe 12, the inlet of which is connected to the outlet of the gas conveying fan 11; a droplet generator 13, the output of which is connected to the inner cavity of the blending pipe 12; and a particle oscillation generator 14, the output of which is connected to the inner cavity of the blending pipe 12, to ensure that the multiphase fluid blending assembly 10 can blend gas, liquid, and solid three-phase fluid sample media.

[0049] Based on this, the multiphase fluid blending component 10 also includes a foaming machine 15, the output end of which is connected to the inner cavity of the blending pipe 12, so that the multiphase fluid blending component 10 can blend sample media containing gas, liquid and solid three-phase fluids with foam, which facilitates the medium flow law of model foam working conditions.

[0050] In this embodiment, the multiphase fluid blending assembly 10 further includes a gas flow meter 16, which is connected in series at the output end of the gas conveying blower 11 to monitor the flow rate of natural gas entering the blending assembly.

[0051] Continue to combine Figure 1The circulating pipeline 21 includes a front horizontal pipe section 21a, a front vertical pipe section 21b, a middle horizontal pipe section 21c, a rear vertical pipe section 21d, and a rear horizontal pipe section 21e connected in sequence. The front horizontal pipe section 21a, the front vertical pipe section 21b, the middle horizontal pipe section 21c, the rear vertical pipe section 21d, and the rear horizontal pipe section 21e are all connected in series with the sampling pipeline 22 to simulate the medium flow in different pipe sections.

[0052] It is understood that the input and output sections of the front horizontal pipe section 21a, the front vertical pipe section 21b, the middle horizontal pipe section 21c, the rear vertical pipe section 21d, and the rear horizontal pipe section 21e are all connected in series with the sampling pipe 22, so as to observe the influence of different arrangement of bends on the representativeness of the fluid samples taken near the bend.

[0053] Generally, the output end of the circulating pipeline 21 is connected in series with a vent separator 23, which is used to separate gas, liquid and solid three-phase fluids so as to filter out and recover liquid and solid impurities mixed in natural gas.

[0054] Recombined Figure 1 The sample collection and processing assembly 30 includes: a sampling valve 31 for controlling the on / off state of each sampling point; a media distributor 32 connected to the output end of the sampling valve 31; an online separation assembly 33, the input section of which is connected to one media output end of the media distributor 32, and the online separation assembly 33 is used for online separation of the sampling media; and a bypass sampling assembly 34, the input section of which is connected to another media output end of the media distributor 32, and the bypass sampling assembly 34 is used to collect the sampling media, so that the sample collection and processing assembly 30 can collect the obtained samples and perform online separation of the samples.

[0055] It should be understood that the sample collection and processing assembly 30 also includes a plurality of sampling connectors 35, each of which is used to connect to a corresponding sampling point, and the output section of each of the sampling connectors 35 is connected to the input end of the sampling valve 31 so as to connect the sampling valve 31 to the corresponding sampling point.

[0056] Combination Figure 2 and Figure 3 Each of the sampling pipelines 22 is provided with three sets of sampling points. The three sets of sampling points are arranged at intervals along the circumference of the corresponding sampling pipeline 22, and the sampling points in each set are arranged at intervals along the length of the corresponding sampling pipeline 22, so as to simulate multiple sampling levels.

[0057] Specifically, the phase angle between two adjacent sets of sampling points on each of the sampling pipelines 22 is 45°, so that the sampling points can be vertically distributed.

[0058] Taking the rear end of a vertically upward-facing pipe section of a loop as an example, the sampling connectors 35 are divided into three groups: six sampling connectors 35 at 0° are located on the first plane; six sampling connectors 35 at 45° are located on the second plane; and six sampling connectors 35 at 90° are located on the third plane. The angle between the first and second planes is 45°, the angle between the second and third planes is 45°, and the angle between the first and third planes is 90°. When the sampling point is located on a vertical pipe, all three planes are vertical surfaces; when the sampling point is located on a horizontal pipe, the first plane is horizontal, and the angle between the second plane and the vertical surface is 45°, while the third plane is a vertical surface.

[0059] For the sampling points at the front end of the front horizontal pipe section 21a to the rear horizontal pipe section 21e, the distances between the six sampling connectors 35 at 0° and the nearest bends on the loop to the sampling points are 0D, 0.5D, 1D, 1.5D, 2D, and 2.5D, respectively, where D is the inner diameter of the experimental loop pipe. The distribution of sampling probes in the second and third planes is consistent with the aforementioned distribution method.

[0060] Combination Figure 4 The 0° first sampling connector 35, the 45° first sampling connector 35, and the 90° first sampling connector 35 are located within the same pipe cross section. The insertion depth of each probe is divided into 5 levels, and each sampling connector 35 probe is equipped with a valve.

[0061] The online separation component 33 includes a magnetic separator 33a, an online membrane separator 33b, and an online separation flow meter 33c connected in sequence to ensure that the online separation component 33 can perform online separation.

[0062] It is known that the output end of the online separation flow meter 33c is connected to an online separation pressure reducing valve 33d to reduce the pressure of the sample medium after online separation, so as to facilitate the collection of the sampled gas.

[0063] The bypass sampling assembly 34 includes a bypass valve 34a, a sampling storage unit 34b, a first bypass flow meter 34c, a bypass membrane separator 34d, and a second bypass flow meter 34e connected in sequence to ensure that the bypass sampling assembly 34 can perform storage sampling and can calculate the amount of stored sample medium.

[0064] Similarly, the output of the second bypass flow meter 34e is connected to a bypass pressure reducing valve 34f to facilitate the collection of sampled gas.

[0065] In summary, the sampling device for simulating a raw material gas gathering and transportation system provided in this embodiment includes a multiphase fluid blending component 10, a simulated sampling pipeline 20, and a sample collection and processing component 30. The multiphase fluid blending component 10 is used to blend gas, liquid, and solid three-phase fluids to simulate media with different gas, liquid, and solid contents in the raw material gas gathering and transportation system. The simulated sampling pipeline 20 includes a circulating pipeline 21, which has a closed polygonal layout. Each flow section of the circulating pipeline 21 is connected in series with a sampling pipeline 22. Each sampling pipeline 22 is provided with multiple sampling points to simulate sample sampling corresponding to different pipeline characteristics, different sampling depths, and different sampling times. The sample collection and processing component 30 can collect and process the media taken from the sampling points of the sampling pipeline 22.

[0066] In addition, it can also conduct flow law experiments on various media such as gas, liquid, solid, and foam. By setting up a visual pipe with sampling points and a high-speed motion camera, it can study the influence of horizontal pipes, vertical pipes, and bends on the flow law of pipe media with different media ratios. By comparing the photos of the fluid flow state with the sampling analysis results, the flow law of fluid in the pipe can be clarified.

[0067] In summary, the sampling device for simulating the sampling of a raw gas gathering and transportation system provided in this embodiment can simulate the influence of different gas-liquid-solid contents, different pipeline characteristics, different sampling depths, sampling times, and other parameters on the representativeness of the sample. This facilitates the determination of the optimal sampling location and sampling parameters, providing a basis for the representative sampling of solid-liquid two-phase media in the gas field's raw gas gathering and transportation system, as well as the accurate evaluation of the operating status and efficiency of separation and filtration equipment.

[0068] Example 2

[0069] This embodiment provides a sampling method for simulating a feed gas gathering and transportation system, based on the sampling device for simulating a feed gas gathering and transportation system described in Embodiment 1, and includes the following steps:

[0070] S10. Connect the sampling connector 35 in the sample collection and processing assembly 30 to the corresponding sampling point.

[0071] Specifically, when conducting a sampling simulation experiment of a simulated raw gas gathering and transportation system, the sampling point is first selected according to the requirements. That is, the connection between the simulated sampling pipeline 20 and the sample collection and sample collection and processing component 30 is realized by assembling a certain point in the front horizontal pipe section 21a-rear horizontal pipe section 21e with the sampling connector 35.

[0072] S20. Turn on the gas conveying fan 11, droplet generator 13, particle oscillation generator 14 and bubbler 15 in sequence to realize the simulation of multiphase flow in the pipeline.

[0073] S30. Open or close the valve of the corresponding sampling connector 35 according to the sampling requirements.

[0074] S40. Open the sampling valve 31 and adjust the media distributor 32 to determine the sampling mode.

[0075] Specifically, after opening the sampling valve 31, the sampling line is selected by adjusting the media distributor 32 and the bypass valve 34a. At this time, the sampling depth can be selected by controlling different insertion positions of the sampling connector 35.

[0076] After each set of experiments, the corresponding filter membranes were removed, weighed, and analyzed. Wastewater was collected from the drain valves of each separator for offline analysis, enabling quantitative analysis of both the phase and liquid phases. Bypass samples from different experimental groups could be stored in separate sampling bottles for offline analysis. After analyzing the component ratios and contents of samples taken indoors, the analytical results under each group of conditions were compared to verify the most representative sample. Based on the representativeness of the sample, the optimal sampling points for horizontal straight and curved pipes of different diameters were selected.

[0077] In summary, the sampling method for simulating a raw gas gathering and transportation system provided in this embodiment is based on the sampling device for simulating a raw gas gathering and transportation system described in Embodiment 1. After connecting the sampling connector 35 in the sample collection and processing component 30 to the corresponding sampling point, the gas conveying fan 11, droplet generator 13, particle oscillation generator 14, and bubbler 15 are turned on in sequence. Then, according to the sampling requirements, the valves of the corresponding sampling connector 35 are opened or closed. Finally, the sampling valve 31 is opened, and the medium distributor 32 is adjusted to determine the sampling mode. This method can simulate the influence of different gas-liquid-solid contents, different pipeline characteristics, different sampling depths, sampling times, and other parameters of the raw gas gathering and transportation system on the representativeness of the sample, so as to determine the optimal sampling point and sampling parameters. This provides a basis for the representative sampling of solid-liquid two-phase media in the gas field raw gas gathering and transportation system and the accurate evaluation of the operating status and efficiency of separation and filtration equipment.

[0078] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A sampling device for simulating sampling in a raw gas gathering and transportation system, characterized in that, include: Multiphase fluid mixing component (10), the multiphase fluid mixing component (10) is used to mix gas, liquid and solid three-phase fluids to output sample medium sample; The simulated sampling pipeline (20) includes a circulation pipeline (21), which is a closed polygonal layout. Each flow section of the circulation pipeline (21) is connected in series with a sampling pipeline (22), and each sampling pipeline (22) is provided with multiple sampling points. A sample collection and processing assembly (30) is used to collect and process the medium taken from the sampling point of the sampling pipeline (22).

2. The sampling device for sampling a simulated raw gas gathering and transportation system according to claim 1, characterized in that, The multiphase fluid blending component (10) includes: A gas conveying fan (11) is used to convey test gas; A mixing pipe (12) is provided, the inlet end of which is connected to the outlet end of the gas conveying fan (11). A droplet generator (13) is provided, the output end of which is connected to the inner cavity of the mixing pipe (12); A particulate matter oscillation generator (14) is provided, the output of which is connected to the inner cavity of the mixing pipe (12).

3. The sampling device for sampling a simulated raw gas gathering and transportation system according to claim 2, characterized in that, The multiphase fluid blending assembly (10) also includes a foamer (15), the output end of which is connected to the inner cavity of the blending pipe (12).

4. The sampling device for sampling a simulated raw gas gathering and transportation system according to claim 2, characterized in that, The multiphase fluid blending assembly (10) also includes a gas flow meter (16), which is connected in series at the output end of the gas conveying fan (11).

5. The sampling device for sampling a simulated raw material gas gathering and transportation system according to claim 1, characterized in that, The circulating pipeline (21) includes a front horizontal pipe section (21a), a front vertical pipe section (21b), a middle horizontal pipe section (21c), a rear vertical pipe section (21d), and a rear horizontal pipe section (21e) connected in sequence, and the front horizontal pipe section (21a), the front vertical pipe section (21b), the middle horizontal pipe section (21c), the rear vertical pipe section (21d), and the rear horizontal pipe section (21e) are all connected in series with the sampling pipeline (22).

6. The sampling device for sampling a simulated raw gas gathering and transportation system according to claim 5, characterized in that, The sampling pipeline (22) is connected in series to the input and output sections of the front horizontal pipe section (21a), the front vertical pipe section (21b), the middle horizontal pipe section (21c), the rear vertical pipe section (21d), and the rear horizontal pipe section (21e).

7. The sampling device for sampling a simulated raw gas gathering and transportation system according to claim 1, characterized in that, The output end of the circulating pipeline (21) is connected in series with a vent separator (23), which is used to separate gas, liquid and solid three-phase fluids.

8. The sampling device for sampling a simulated raw material gas gathering and transportation system according to any one of claims 1 to 7, characterized in that, The sample collection and processing component (30) includes: Sampling valve (31), the sampling valve (31) is used to control the on / off state of each sampling point; A media distributor (32) is connected to the output of the sampling valve (31); An online separation component (33) is provided, wherein the input section of the online separation component (33) is connected to a media output terminal of the media dispenser (32), and the online separation component (33) is used to perform online separation of the sampled media; A bypass sampling component (34) is provided, the input segment of which is connected to another media output terminal of the media distributor (32), and the bypass sampling component (34) is used to collect sampling media.

9. The sampling device for sampling a simulated raw material gas gathering and transportation system according to claim 8, characterized in that, The sample collection and processing assembly (30) further includes a plurality of sampling connectors (35), each of which is used to connect to a corresponding sampling point, and the output section of each of the sampling connectors (35) is connected to the input end of the sampling valve (31).

10. The sampling device for sampling a simulated raw material gas gathering and transportation system according to claim 9, characterized in that, Each of the sampling pipelines (22) is provided with three sets of sampling points. The three sets of sampling points are arranged at intervals along the circumference of the corresponding sampling pipeline (22), and the sampling points in each set are arranged at intervals along the length of the corresponding sampling pipeline (22).

11. The sampling device for sampling a simulated raw material gas gathering and transportation system according to claim 10, characterized in that, The phase angle between two adjacent sampling points on each of the sampling pipelines (22) is 45°.

12. The sampling device for sampling a simulated raw material gas gathering and transportation system according to claim 8, characterized in that, The online separation component (33) includes a magnetic separator (33a), an online membrane separator (33b), and an online separation flow meter (33c) connected in sequence.

13. The sampling device for sampling a simulated raw material gas gathering and transportation system according to claim 12, characterized in that, The output end of the online separation flow meter (33c) is connected to an online separation pressure reducing valve (33d).

14. The sampling device for sampling a simulated raw material gas gathering and transportation system according to claim 8, characterized in that, The bypass sampling assembly (34) includes a bypass valve (34a), a sampling reservoir (34b), a first bypass flow meter (34c), a bypass membrane separator (34d), and a second bypass flow meter (34e) connected in sequence.

15. The sampling device for sampling a simulated raw material gas gathering and transportation system according to claim 14, characterized in that, The output of the second bypass flow meter (34e) is connected to a bypass pressure reducing valve (34f).

16. A sampling method for simulating a raw material gas gathering and transportation system, characterized in that, The sampling device for sampling a simulated feed gas gathering and transportation system according to any one of claims 1 to 15 includes the following steps: Connect the sampling connector (35) in the sample collection and processing assembly (30) to the corresponding sampling point; Turn on the gas conveying fan (11), droplet generator (13), particulate matter oscillation generator (14) and bubbler (15) in sequence; Open or close the valve of the corresponding sampling connector (35) according to the sampling requirements; Open the sampling valve (31) and adjust the media distributor (32) to determine the sampling mode.

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