Natural hydrogen detection and monitoring system and method

Abstract

The invention provides a natural hydrogen detection and monitoring system and method.The natural hydrogen detection and monitoring system comprises a conical sampler, a gas dissipation prevention sampling cover and a hydrogen detection device, and the conical sampler is used for being inserted into soil to conduct fixed-point sampling of natural hydrogen; the conical sampler is arranged inside the gas dissipation prevention sampling cover, the gas dissipation prevention sampling cover is used for being inserted into soil, natural hydrogen can be prevented from being dissipated from the contact position of the conical sampler and the soil, and the natural hydrogen dissipated into the soil by the conical sampler is gathered; the hydrogen detection device is connected with the conical sampler and the gas dissipation prevention sampling cover through connecting hoses, and the hydrogen detection device is used for detecting the concentration of hydrogen in soil and transmitting detection data to a remote monitoring center or a user terminal in real time. According to the invention, real-time monitoring of natural hydrogen can be realized, the problem that natural hydrogen is easy to escape during detection is effectively solved, the accuracy and reliability of natural hydrogen detection data are improved, the sampling process is simple and reliable, and personnel do not need to stay in the field for a long time.

Description

Technical Field

[0001] The present invention relates to the technical field of natural hydrogen detection and monitoring, and in particular to a natural hydrogen detection and monitoring system and method. Background Art

[0002] Natural hydrogen refers to hydrogen resources that exist in nature and are naturally formed through geological tectonic movements and chemical processes in the earth's crust and mantle. Natural hydrogen is not produced by artificial means, such as electrolysis of water, steam reforming or coal gasification, so it has the characteristics of zero carbon and renewable. Natural hydrogen resources are generally distributed on the surface and underground of the earth, and their causes are diverse, including abiotic causes (such as deep source hydrogen generation, water-rock reaction or water radiolysis) and biological causes (such as thermal causes or microbial action). In recent years, the exploration of natural hydrogen has further proved the huge potential of natural hydrogen resources.

[0003] However, the current detection and monitoring technology for natural hydrogen is still immature. There are problems such as the inability to monitor in real time, the need for long-term on-site personnel, the easy escape of hydrogen during detection, and the complicated sampling process. Summary of the invention

[0004] The first purpose of the present invention is to provide a natural hydrogen detection and monitoring system that can solve the problems that the prior art cannot monitor natural hydrogen in real time, natural hydrogen is easy to escape during detection, and the sampling process is cumbersome.

[0005] The second object of the present invention is to provide a natural hydrogen detection and monitoring method.

[0006] The present invention provides a natural hydrogen detection and monitoring system, comprising:

[0007] A conical sampler, the conical sampler is used to be inserted into the soil for fixed-point sampling of natural hydrogen, the conical sampler is provided with a plurality of sampling holes, a first sampling tube is connected to the upper end of the conical sampler, and the first sampling tube is communicated with the chamber of the conical sampler;

[0008] A gas escape-proof sampling cover, wherein the gas escape-proof sampling cover is a cylindrical cover shell with a closed upper end and an open lower end, wherein the conical sampler is arranged inside the gas escape-proof sampling cover, and the lower end opening of the gas escape-proof sampling cover is used to be inserted into the soil, so as to prevent the natural hydrogen from escaping from the contact point between the conical sampler and the soil, and to gather the natural hydrogen that escapes from the conical sampler into the soil; the upper end of the gas escape-proof sampling cover is exposed outside the soil, and a second sampling tube is connected to the upper end of the gas escape-proof sampling cover, and the second sampling tube is communicated with the chamber of the gas escape-proof sampling cover;

[0009] A hydrogen detection device, wherein the hydrogen detection device is connected to a connecting hose, and the connecting hose is respectively connected to the first sampling tube and the second sampling tube. The hydrogen detection device is used to detect the hydrogen concentration in the soil and transmit the detection data to a remote monitoring center or a user terminal in real time.

[0010] According to a natural hydrogen detection and monitoring system provided by the present invention, the conical sampler includes a conical outer shell and a conical mesh shell inner shell, the upper end of the conical mesh shell inner shell is fixedly provided with a sampler end plate, and the first sampling tube is connected to the sampler end plate; the conical mesh shell inner shell is pluggably arranged inside the conical outer shell, and the upper end of the conical outer shell and the conical mesh shell inner shell are detachably connected to make the sampler end plate in close contact with the upper end surface of the conical outer shell.

[0011] According to a natural hydrogen detection and monitoring system provided by the present invention, a plurality of groups of sampling holes are provided on the conical outer shell, and the sampling holes in each group are arranged in sequence at intervals along the length direction of the conical outer shell, and the sampling holes in each group are arranged at intervals along the circumference of the conical outer shell; the arrangement spacing of two adjacent groups of sampling holes gradually decreases from bottom to top.

[0012] According to a natural hydrogen detection and monitoring system provided by the present invention, a plurality of groups of brushes are fixedly provided on the outer peripheral surface of the conical mesh shell inner liner, and each group of the brushes is respectively arranged in a ring shape on the conical mesh shell inner liner, and the groups of the brushes are respectively arranged in sequence and spaced apart along the length direction of the conical mesh shell inner liner, and the groups of the brushes and the groups of the sampling holes are arranged alternately.

[0013] According to a natural hydrogen detection and monitoring system provided by the present invention, an external threaded portion is provided on the outer circumferential surface of the upper end of the conical mesh shell inner tank, and an internal threaded portion is provided on the inner circumferential surface of the upper end of the conical outer shell, and the external threaded portion and the internal threaded portion are threadedly connected and matched.

[0014] According to a natural hydrogen detection and monitoring system provided by the present invention, a sealing rubber gasket is also sleeved on the conical mesh shell inner shell, and the sealing rubber gasket is arranged between the sampler end plate and the upper end surface of the conical outer shell.

[0015] According to a natural hydrogen detection monitoring system provided by the present invention, the anti-gas escape sampling cover comprises a sampling cover shell and a sampling cover end plate, the sampling cover shell comprises a cylindrical shell and an epitaxial plate fixedly arranged on the upper end of the cylindrical shell, the sampling cover end plate is mounted on the epitaxial plate, and the sampling cover end plate and the epitaxial plate are detachably connected, and a sealing ring is also installed between the sampling cover end plate and the epitaxial plate;

[0016] The second sampling tube is connected to the sampling cover end plate; a butt joint tube is also connected to the sampling cover end plate, the butt joint tube passes through the sampling cover end plate, one end of the butt joint tube is connected to the first sampling tube via a first quick connector, and the other end of the butt joint tube is connected to the connecting hose via a second quick connector.

[0017] A natural hydrogen detection and monitoring system provided by the present invention also includes a detachable sampling gas cylinder, and the connecting hose is detachably connected to the detachable sampling gas cylinder through a gas cylinder connecting pipeline, and a solenoid valve and a vacuum pump are respectively installed on the gas cylinder connecting pipeline; the detachable sampling gas cylinder is used to store the gas obtained from the monitoring point for subsequent laboratory analysis and research.

[0018] A natural hydrogen detection and monitoring system provided according to the present invention further includes a photovoltaic power generation device, which is electrically connected to the hydrogen detection device and is used to provide electrical energy for the hydrogen detection device.

[0019] The present invention also provides a natural hydrogen detection and monitoring method, which uses the above-mentioned natural hydrogen detection and monitoring system and specifically includes:

[0020] Select the natural hydrogen monitoring point and insert the cone sampler into the soil;

[0021] With the conical sampler as the center, insert the gas escape-proof sampling cover into the soil, ensuring that the gas escape-proof sampling cover and the conical sampler are concentrically arranged;

[0022] Preparing a detachable sampling gas cylinder and exhausting the gas in the detachable sampling gas cylinder;

[0023] The conical sampler, the anti-gas escape sampling cover, the hydrogen detection device and the detachable sampling gas cylinder are respectively connected by connecting hoses to ensure that the entire natural hydrogen detection and monitoring system is tightly connected and leak-free;

[0024] Starting the hydrogen detection device to start real-time detection of natural hydrogen concentration;

[0025] When the natural hydrogen concentration reaches a preset hydrogen concentration threshold, the solenoid valve is automatically opened and the vacuum pump is triggered to work, sucking the gas near the monitoring point into the detachable sampling gas cylinder;

[0026] When the natural hydrogen concentration drops to a predetermined value, the solenoid valve is automatically closed and the vacuum pump stops pumping gas.

[0027] The natural hydrogen detection monitoring system provided by the present invention is provided with a conical sampler for inserting into the soil for fixed-point sampling of natural hydrogen, and a gas escape-proof sampling cover is provided on the outside of the conical sampler, and the lower end opening of the gas escape-proof sampling cover is used to insert into the soil, so as to prevent natural hydrogen from escaping from the contact point between the conical sampler and the soil, and gather the natural hydrogen that escapes from the conical sampler into the soil; a hydrogen detection device is provided, and the hydrogen detection device is connected to the conical sampler and the sampling tube of the gas escape-proof sampling cover respectively through a connecting hose, so as to detect the hydrogen concentration in the soil and transmit the detection data to a remote monitoring center or a user terminal in real time. Thus, the present invention can realize real-time monitoring of natural hydrogen at the sampling point, enhance the continuity and stability of the monitoring process, effectively solve the problem that natural hydrogen is easy to escape during detection, improve the accuracy and reliability of natural hydrogen detection data, the monitoring process can be automatically controlled, the sampling process is simple and reliable, no personnel need to be stationed on site for a long time, and the survey cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a structural schematic diagram of the natural hydrogen detection and monitoring system of the present invention;

[0030] Figure 2 It is a structural schematic diagram of a cone sampler in the natural hydrogen detection and monitoring system of the present invention;

[0031] Figure 3 It is a schematic structural diagram of a conical outer shell in the natural hydrogen detection and monitoring system of the present invention;

[0032] Figure 4 It is a schematic diagram of the structure of the conical lattice shell liner in the natural hydrogen detection and monitoring system of the present invention;

[0033] Figure 5 It is a schematic diagram of the installation of the sealing rubber gasket in the natural hydrogen detection and monitoring system of the present invention;

[0034] Figure 6 This is a graph showing the change of hydrogen concentration over time when natural hydrogen is detected by a hydrogen detection device according to the present invention.

[0035] Description of reference numerals:

[0036] 100. Conical sampler; 200. Sampling cover to prevent gas escape; 300. Hydrogen detection device; 400. Photovoltaic power generation device;

[0037] 1. Conical outer shell; 2. Conical mesh shell liner; 3. Sampler end plate; 4. First sampling tube; 5. Sampling hole; 6. Second sampling tube; 7. Brush; 8. External threaded part; 9. Internal threaded part; 10. Sealing rubber gasket; 11. Sampling cover end plate; 12. Cylindrical shell; 13. Extension plate; 14. Sealing ring; 15. Clamp; 16. Butt pipe; 17. Connecting hose; 18. First quick connector; 19. Second quick connector; 20. Third quick connector; 21. Removable sampling gas cylinder; 22. Gas cylinder connecting pipeline; 23. Solenoid valve; 24. Vacuum pump; 25. Fourth quick connector. DETAILED DESCRIPTION

[0038] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0040] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] like Figures 1 to 6 As shown, the natural hydrogen detection and monitoring system according to the embodiment of the present invention at least includes a conical sampler 100 , a gas escape-proof sampling cover 200 , and a hydrogen detection device 300 .

[0042] The conical sampler 100 is used to be inserted into the soil for spot sampling of natural hydrogen. A plurality of sampling holes 5 are provided on the conical sampler 100 . A first sampling tube 4 is connected to the upper end of the conical sampler 100 . The first sampling tube 4 is communicated with the chamber of the conical sampler 100 .

[0043] The gas escape sampling cover 200 is a cylindrical cover shell with a closed upper end and an open lower end. The conical sampler 100 is arranged inside the gas escape sampling cover 200. The lower end opening of the gas escape sampling cover 200 is used to be inserted into the soil, which can prevent the natural hydrogen from escaping from the contact between the conical sampler 100 and the soil, and gather the natural hydrogen that escapes from the conical sampler 100 into the soil. The upper end of the gas escape sampling cover 200 is exposed to the outside of the soil, and the second sampling tube 6 is connected to the upper end of the gas escape sampling cover 200, and the second sampling tube 6 is connected to the chamber of the gas escape sampling cover 200.

[0044] Among them, the hydrogen detection device 300 is connected to the connecting hose 17, and the connecting hose 17 is respectively connected to the first sampling tube 4 and the second sampling tube 6. The hydrogen detection device 300 is used to detect the hydrogen concentration in the soil and transmit the detection data to the remote monitoring center or the user terminal in real time. Among them, the hydrogen detection device 300 is based on the diffusion principle, and can quickly capture and respond to the changes in natural hydrogen concentration using high-precision sensors. The collected data is processed in real time through the built-in data processing unit, such as removing abnormal values, data smoothing, etc., to ensure that the data is accurate and reliable. It can also store concentration data for a certain time, and transmit it to the remote monitoring center or the user terminal through a wireless transmission module (such as Bluetooth, Wi-Fi or mobile network module), so that researchers can view and analyze the concentration change trend over time. In addition, the data processing unit can also determine whether it is necessary to start automatic sampling and other operations based on historical data and a preset hydrogen concentration threshold, and can generate intuitive data display forms such as concentration change curves, so that researchers can understand the dynamic changes in natural hydrogen concentration in a timely manner.

[0045] The natural hydrogen detection and monitoring system of the embodiment of the present invention, through the coordinated use of the conical sampler 100 and the anti-gas escape sampling cover 200, can form an effective seal with the soil of the monitoring site, prevent the natural hydrogen from escaping from the contact point between the conical sampler 100 and the soil, and gather the hydrogen escaped from the conical sampler 100, thereby ensuring the sampling accuracy and sample integrity.

[0046] The natural hydrogen detection and monitoring system of the embodiment of the present invention can realize automatic detection and monitoring functions. The hydrogen detection device 300 adopts the diffusion detection principle, replacing the traditional pump suction sampling method, realizing continuous and real-time monitoring of natural hydrogen, reducing manual intervention, and improving monitoring efficiency. The sampling process is simple and reliable, and there is no need for personnel to be stationed on site for a long time, which reduces the survey cost.

[0047] When in use, by setting up multiple hydrogen detection devices 300 at different monitoring locations, the natural hydrogen concentration data collected at different time points and different monitoring locations can be compared and analyzed, so as to understand the diffusion rate and dynamic changes of natural hydrogen around the monitoring points, and provide richer data support for geological research, etc.

[0048] Specifically, in the gas sampling process, the connecting hose 17 can ensure smooth gas transmission without leakage risk due to its good chemical stability and flexibility.

[0049] Specifically, the conical sampler 100 comprises a conical outer shell 1 and a conical mesh shell liner 2, wherein a sampler end plate 3 is fixedly arranged at the upper end of the conical mesh shell liner 2, and a first sampling tube 4 is connected to the sampler end plate 3. The conical mesh shell liner 2 is pluggably arranged inside the conical outer shell 1, and the upper end of the conical outer shell 1 is detachably connected to the conical mesh shell liner 2, so that the sampler end plate 3 is in close contact with the upper end surface of the conical outer shell 1.

[0050] A plurality of groups of sampling holes 5 are provided on the conical outer shell 1 , and the sampling holes 5 of each group are sequentially spaced along the length direction of the conical outer shell 1 , and the sampling holes 5 in each group are spaced around the circumference of the conical outer shell 1 .

[0051] The spacing between two adjacent groups of sampling holes 5 gradually decreases from bottom to top. That is, according to the characteristics of natural hydrogen, the sampling holes 5 on the conical outer shell 1 are arranged in a "dense at the top and sparse at the bottom" manner, so that the gas can enter the conical sampler 100 more smoothly, thereby improving the sampling efficiency and accuracy.

[0052] Among them, a plurality of groups of brushes 7 are fixedly arranged on the outer peripheral surface of the conical mesh shell inner liner 2, each group of brushes 7 is respectively arranged in a ring shape on the conical mesh shell inner liner 2, and each group of brushes 7 is respectively arranged in sequence along the length direction of the conical mesh shell inner liner 2, and each group of brushes 7 is arranged alternately with each group of sampling holes 5. That is, when the conical mesh shell inner liner 2 and the conical outer shell 1 are installed in place, the brushes 7 will not block the sampling holes 5, thereby ensuring that the gas in the soil can smoothly enter the interior of the conical sampler 100.

[0053] Specifically, the conical outer shell 1 is made of a stainless steel shell, the conical mesh shell inner liner 2 is made of a stainless steel mesh shell, and the brush 7 is made of a stainless steel brush, thereby ensuring the structural strength and reliability of the conical sampler 100.

[0054] Since the conical sampler 100 needs to be inserted into the soil for sampling operation, when it is necessary to change the next monitoring point for use after a period of use, the soil may block the sampling hole 5, thereby affecting the sampling accuracy of the conical sampler 100. Therefore, through the detachable installation between the conical outer shell 1 and the conical mesh shell liner 2, it is convenient to take the conical mesh shell liner 2 out of the conical outer shell 1, and then clean the conical outer shell 1. Since the conical mesh shell liner 2 is provided with a brush 7, the inside of the conical outer shell 1 can be effectively cleaned by pulling up and down or rotating the conical mesh shell liner 2.

[0055] Since the conical mesh shell liner 2 is made of a thinner stainless steel mesh, in order to ensure the performance of the conical mesh shell liner 2, a waterproof breathable membrane can be installed on the outside of the conical mesh shell liner 2, and the brush 7 can be fixed on the waterproof breathable membrane, which does not affect the smooth entry of gas into the conical mesh shell liner 2, and can prevent the soil from blocking the mesh of the conical mesh shell liner 2, and can play a certain waterproof and anti-corrosion role, thereby improving the service life of the conical mesh shell liner 2. When it is necessary to replace the monitoring point again for sampling, it is only necessary to clean the inside of the conical outer shell 1 with the brush 7, then remove the waterproof breathable membrane from the conical mesh shell liner 2, and then install a new waterproof breathable membrane with the brush 7 on the conical mesh shell liner 2, and then reinstall the conical mesh shell liner 2 into the conical outer shell 1.

[0056] Among them, an external threaded portion 8 is provided on the outer circumference of the upper end of the conical mesh shell inner tank 2, and an internal threaded portion 9 is provided on the inner circumference of the upper end of the conical outer shell 1. The external threaded portion 8 and the internal threaded portion 9 are threadedly connected to each other, which is convenient for disassembly and assembly.

[0057] A sealing rubber gasket 10 is also sleeved on the conical mesh shell inner liner 2. The sealing rubber gasket 10 is arranged between the sampler end plate 3 and the upper end surface of the conical outer shell 1 to improve the sealing performance.

[0058] Specifically, the anti-gas escape sampling hood 200 includes a sampling hood shell and a sampling hood end plate 11. The sampling hood shell includes a cylindrical shell 12 and an extension plate 13 fixed to the upper end of the cylindrical shell 12. The sampling hood end plate 11 is installed on the extension plate 13, and the sampling hood end plate 11 and the extension plate 13 are detachably connected. A sealing ring 14 is also installed between the sampling hood end plate 11 and the extension plate 13.

[0059] The detachable installation between the sampling cover shell and the sampling cover end plate 11 facilitates the installation of the conical sampler 100 inside the anti-gas escape sampling cover 200, and also facilitates the maintenance or replacement of the conical sampler 100, making it more flexible and convenient to use.

[0060] In this embodiment, the sampling cover end plate 11 and the extension plate 13 are detachably connected by a clamp 15, and the installation is simple. The sealing ring 14 can ensure good sealing between the sampling cover shell and the sampling cover end plate 11 after installation, effectively preventing hydrogen from escaping, thereby ensuring sampling accuracy and sample integrity.

[0061] Among them, a butt joint 16 is also connected to the sampling cover end plate 11, and the butt joint 16 passes through the sampling cover end plate 11. One end of the butt joint 16 is connected to the first sampling tube 4 through a first quick connector 18, and the other end of the butt joint 16 is connected to the connecting hose 17 through a second quick connector 19. The second sampling tube 6 is connected to the sampling cover end plate 11, and the second sampling tube 6 is connected to the connecting hose 17 through a third quick connector 20. By providing a quick connector, the connection and disassembly between devices can be faster and more efficient, and the airtightness and safety of gas sampling after connection can be guaranteed.

[0062] Furthermore, the natural hydrogen detection monitoring system also includes a detachable sampling gas cylinder 21, and the connecting hose 17 is detachably connected to the detachable sampling gas cylinder 21 through the gas cylinder connecting pipeline 22, and a solenoid valve 23 and a vacuum pump 24 are respectively installed on the gas cylinder connecting pipeline 22. Among them, the connecting hose 17 and the gas cylinder connecting pipeline 22 are detachably connected through a fourth quick connector 25. The detachable sampling gas cylinder 21 is used to store the gas obtained from the monitoring point, which simplifies the sampling and transportation process, so as to facilitate subsequent transportation to the laboratory for in-depth analysis and research.

[0063] Among them, the solenoid valve 23 and the vacuum pump 24 are electrically connected to the hydrogen detection device 300 respectively. The vacuum pump 24 can be intelligently started and stopped according to the hydrogen threshold preset by the hydrogen detection device 300. When the natural hydrogen concentration reaches the hydrogen concentration threshold, it starts quickly to draw the gas near the monitoring point into the detachable sampling gas cylinder 21 for storage. Among them, the detachable sampling gas cylinder 21 is made of high-strength and corrosion-resistant materials to provide a safe environment for gas storage and facilitate subsequent laboratory analysis. Among them, the solenoid valve 23 can control the on-off status of the gas cylinder connecting pipeline 22 according to the control signal fed back by the hydrogen detection device 300, realize automatic sampling control, and ensure that the entire sampling process is efficient and reliable.

[0064] That is, the automatic, accurate sampling and safe storage of natural hydrogen can be achieved through the coordinated use of the hydrogen detection device 300, the detachable sampling gas cylinder 21, the solenoid valve 23 and the vacuum pump 24. During the automatic sampling process, the system will record the concentration data and related environmental parameters at the time of sampling, and perform correlation analysis with the previous sampling data, so that researchers can better understand the distribution law and change trend of natural hydrogen.

[0065] Furthermore, the natural hydrogen detection and monitoring system further includes a photovoltaic power generation device 400, which is electrically connected to the hydrogen detection device 300, the solenoid valve 23 and the air pump 24. The photovoltaic power generation device 400 converts solar energy into electrical energy through solar panels, which is used to power the hydrogen detection device 300, the solenoid valve 23 and the air pump 24, ensuring that the natural hydrogen concentration can be stably monitored when there is no external power supply in the field, providing data support for research.

[0066] The installation process of the natural hydrogen detection monitoring system of this embodiment is as follows:

[0067] At the selected natural hydrogen monitoring point, first clean the site to ensure that there is no debris that affects the equipment installation. Then use appropriate drilling equipment (such as a small geological drill or a manual auger) to vertically insert the conical sampler 100 into the soil to a predetermined depth according to soil conditions and monitoring requirements. During the insertion process, pay attention to controlling the insertion speed and force to avoid damaging the conical sampler 100 or causing excessive disturbance of the soil structure. Before inserting the conical sampler 100 into the soil, check in advance whether the sampling hole 5 on it is unobstructed. If there is any blockage, it should be cleaned in time.

[0068] Slowly insert the sampling cover shell of the anti-gas escape sampling cover 200 into the soil with the conical sampler 100 as the center, so that the lower part of the sampling cover shell is in full contact with the soil to form a good sealing environment. During the insertion process, pay attention to whether the sampling cover shell is deformed or damaged. If there is a problem, it should be adjusted or replaced in time. Then connect the first sampling tube 4 on the conical sampler 100 with the docking tube 16 on the sampling cover end plate 11, and then align the sampling cover end plate 11 with the extension plate 13 of the sampling cover shell, and connect the sampling cover end plate 11 with the extension plate 13 through the clamp 15, and ensure that the sealing ring 14 is tightly sealed.

[0069] Connect the connecting hose 17 connected to the hydrogen detection device 300 to the butt joint 16, the second sampling tube 6 and the gas cylinder connecting pipeline 22 through quick connectors. When connecting, ensure that each quick connector is firmly connected without looseness. Before connecting the connecting hose 17, check in advance whether the connecting hose 17 has signs of damage or aging. If there is a problem, replace it with a new connecting hose 17 in time. Then connect the detachable sampling gas cylinder 21 that has been emptied of gas in advance to the gas cylinder connecting pipeline 22, and then check the solenoid valve 23 on the gas cylinder connecting pipeline 22 to ensure that the solenoid valve 23 is working properly.

[0070] Then, the photovoltaic power generation device 400 is electrically connected to the hydrogen detection device 300, the electromagnetic valve 23 and the air pump 24 respectively, and the connection of the circuit is checked to ensure that each device can work normally.

[0071] Turn on the switch of the hydrogen detection device 300, start real-time monitoring of natural hydrogen concentration, observe whether data collection and transmission are normal, and record and preliminarily analyze the initial concentration data. In the early stage of monitoring, the hydrogen detection device 300 may show a lower natural hydrogen concentration, which is normal because it takes a certain amount of time for hydrogen to diffuse in the soil. Pay close attention to changes in hydrogen concentration over time.

[0072] The embodiment of the present invention further provides a natural hydrogen detection and monitoring method, which adopts the natural hydrogen detection and monitoring system of the above embodiment, and specifically includes:

[0073] A natural hydrogen monitoring point is selected and the cone sampler 100 is inserted into the soil.

[0074] With the conical sampler 100 as the center, the anti-gas escape sampling cover 200 is inserted into the soil to ensure that the anti-gas escape sampling cover 200 and the conical sampler 100 are concentrically arranged.

[0075] Prepare a detachable sampling gas cylinder 21 and exhaust the gas in the detachable sampling gas cylinder 21 in advance.

[0076] The conical sampler 100, the gas escape prevention sampling cover 200, the hydrogen detection device 300 and the detachable sampling gas bottle 21 are respectively connected through the connecting hose 17 to ensure that the entire natural hydrogen detection and monitoring system is tightly connected without leakage.

[0077] The hydrogen detection device 300 is started to detect the natural hydrogen concentration in real time.

[0078] When the natural hydrogen concentration reaches a preset hydrogen concentration threshold, the solenoid valve 23 is automatically opened and the vacuum pump 24 is triggered to work, sucking the gas near the monitoring point into the detachable sampling gas cylinder 21.

[0079] When the natural hydrogen concentration drops to a predetermined value, the solenoid valve 23 is automatically closed and the vacuum pump 24 stops vacuuming.

[0080] Specifically, it is assumed that at a certain moment, the natural hydrogen concentration begins to rise. When the preset hydrogen concentration threshold is reached (for example, a certain ppm value is preset as the hydrogen concentration threshold based on past experience and monitoring requirements), the system automatically opens the solenoid valve 23 and triggers the vacuum pump 24 to start working. At this time, the gas near the monitoring point can be sucked into the detachable sampling gas bottle 21 under the action of the vacuum pump 24. During the gas extraction process, the pressure change in the detachable sampling gas bottle 21 can be detected in real time by the pressure gauge set on the detachable sampling gas bottle 21 to ensure the normal input of gas. At the same time, continue to monitor the law of natural hydrogen concentration changes over time, and conduct a comprehensive analysis of the concentration data and related environmental parameters (such as temperature, humidity, air pressure, etc.) at this time with the previous data to determine whether the concentration increase is related to changes in environmental factors, or whether there may be other reasons such as geological activities.

[0081] Specifically, when the natural hydrogen concentration begins to decrease and eventually drops to a predetermined value, the solenoid valve 23 automatically closes and triggers the vacuum pump 24 to stop pumping. At this point, a complete gas collection process is completed. Record the relevant data of this monitoring, such as the hydrogen concentration change curve, sampling time, monitoring point location and other information. Then carefully remove the detachable sampling gas cylinder 21 and replace it with a new detachable sampling gas cylinder, and then use a dedicated gas cylinder transport box to transport the sampled detachable sampling gas cylinder to the laboratory for further analysis and processing.

[0082] In summary, the natural hydrogen detection and monitoring system and method according to the embodiments of the present invention have the following advantages:

[0083] 1. Strong real-time performance: The hydrogen detection device of the present invention adopts the diffusion sampling principle for sampling and detection, which not only significantly improves the real-time response capability of monitoring, so that the monitoring data can reflect the gas status in near real time, but also enhances the continuity and stability of monitoring, ensuring that the monitoring process will not be interrupted due to device failure or maintenance needs. In addition, through continuous analysis of real-time monitoring data, abnormal fluctuations in natural hydrogen concentration can be discovered in time, providing data support for local natural hydrogen concentration research and judgment, geological disaster warning, etc.

[0084] 2. High detection accuracy: In order to ensure the accuracy and reliability of the detection data, the present invention adopts a conical sampler and a gas escape-proof sampling cover for sampling. This design can effectively prevent external gas from interfering with the sampling process, ensuring that the collected gas samples are pure and representative, thereby greatly improving the accuracy and credibility of the detection results.

[0085] 3. High degree of intelligence: The present invention realizes the automation and intelligence of the monitoring process. Compared with the traditional manual sampling method, the diffusion sampling not only reduces the manpower demand and realizes monitoring with few or even no people, but also can further improve the monitoring efficiency and management level through deep integration with modern information technology, such as the Internet of Things and big data analysis. In addition, this intelligent monitoring method can not only reduce operating costs, but also improve the accuracy and response speed of monitoring, providing strong support for research in related fields.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A natural hydrogen detection and monitoring system, characterized in that: include: A conical sampler, the conical sampler is used to be inserted into the soil for fixed-point sampling of natural hydrogen, the conical sampler is provided with a plurality of sampling holes, a first sampling tube is connected to the upper end of the conical sampler, and the first sampling tube is communicated with the chamber of the conical sampler; A gas escape-proof sampling cover, wherein the gas escape-proof sampling cover is a cylindrical cover shell with a closed upper end and an open lower end, wherein the conical sampler is arranged inside the gas escape-proof sampling cover, and the lower end opening of the gas escape-proof sampling cover is used to be inserted into the soil, so as to prevent the natural hydrogen from escaping from the contact point between the conical sampler and the soil, and to gather the natural hydrogen that escapes from the conical sampler into the soil; the upper end of the gas escape-proof sampling cover is exposed outside the soil, and a second sampling tube is connected to the upper end of the gas escape-proof sampling cover, and the second sampling tube is communicated with the chamber of the gas escape-proof sampling cover; A hydrogen detection device, wherein the hydrogen detection device is connected to a connecting hose, and the connecting hose is respectively connected to the first sampling tube and the second sampling tube. The hydrogen detection device is used to detect the hydrogen concentration in the soil and transmit the detection data to a remote monitoring center or a user terminal in real time.

2. The natural hydrogen detection and monitoring system according to claim 1, characterized in that: The conical sampler includes a conical outer shell and a conical mesh shell inner shell. A sampler end plate is fixedly provided at the upper end of the conical mesh shell inner shell, and the first sampling tube is connected to the sampler end plate. The conical mesh shell inner shell is pluggable and arranged inside the conical outer shell, and the upper end of the conical outer shell and the conical mesh shell inner shell are detachably connected to make the sampler end plate in close contact with the upper end surface of the conical outer shell.

3. The natural hydrogen detection and monitoring system according to claim 2, characterized in that: A plurality of groups of sampling holes are provided on the conical outer shell, and the sampling holes in each group are arranged in sequence along the length direction of the conical outer shell, and the sampling holes in each group are arranged along the circumference of the conical outer shell; the arrangement spacing of two adjacent groups of sampling holes gradually decreases from bottom to top.

4. The natural hydrogen detection and monitoring system according to claim 3, characterized in that: A plurality of groups of brushes are fixedly arranged on the outer peripheral surface of the conical mesh shell inner liner, each group of brushes is arranged in a ring shape on the conical mesh shell inner liner, and each group of brushes is arranged in sequence along the length direction of the conical mesh shell inner liner, and each group of brushes is staggered with each group of sampling holes.

5. The natural hydrogen detection and monitoring system according to claim 2, characterized in that: An external threaded portion is provided on the outer circumferential surface of the upper end of the conical mesh shell inner liner, and an internal threaded portion is provided on the inner circumferential surface of the upper end of the conical outer shell, and the external threaded portion and the internal threaded portion are threadedly connected and matched.

6. The natural hydrogen detection and monitoring system according to claim 2, characterized in that: A sealing rubber gasket is also sleeved on the conical mesh shell inner liner, and the sealing rubber gasket is arranged between the sampler end plate and the upper end surface of the conical outer shell.

7. The natural hydrogen detection and monitoring system according to claim 1, characterized in that: The anti-gas escape sampling cover comprises a sampling cover shell and a sampling cover end plate, wherein the sampling cover shell comprises a cylindrical shell and an extension plate fixedly arranged on the upper end of the cylindrical shell, the sampling cover end plate is mounted on the extension plate, and the sampling cover end plate and the extension plate are detachably connected, and a sealing ring is also installed between the sampling cover end plate and the extension plate; The second sampling tube is connected to the sampling cover end plate; a butt joint tube is also connected to the sampling cover end plate, the butt joint tube passes through the sampling cover end plate, one end of the butt joint tube is connected to the first sampling tube via a first quick connector, and the other end of the butt joint tube is connected to the connecting hose via a second quick connector.

8. The natural hydrogen detection and monitoring system according to claim 1, characterized in that: It also includes a detachable sampling gas cylinder, the connecting hose is detachably connected to the detachable sampling gas cylinder through a gas cylinder connecting pipeline, and a solenoid valve and a vacuum pump are respectively installed on the gas cylinder connecting pipeline; the detachable sampling gas cylinder is used to store the gas obtained from the monitoring point for subsequent laboratory analysis and research.

9. The natural hydrogen detection and monitoring system according to claim 1, characterized in that: It also includes a photovoltaic power generation device, which is electrically connected to the hydrogen detection device and is used to provide electrical energy for the hydrogen detection device.

10. A natural hydrogen detection and monitoring method, characterized in that: The natural hydrogen detection and monitoring system according to any one of claims 1 to 9 specifically comprises: Select the natural hydrogen monitoring point and insert the cone sampler into the soil; With the conical sampler as the center, insert the gas escape-proof sampling cover into the soil, ensuring that the gas escape-proof sampling cover and the conical sampler are concentrically arranged; Preparing a detachable sampling gas cylinder and exhausting the gas in the detachable sampling gas cylinder; The conical sampler, the anti-gas escape sampling cover, the hydrogen detection device and the detachable sampling gas cylinder are respectively connected by connecting hoses to ensure that the entire natural hydrogen detection and monitoring system is tightly connected and leak-free; Starting the hydrogen detection device to start real-time detection of natural hydrogen concentration; When the natural hydrogen concentration reaches a preset hydrogen concentration threshold, the solenoid valve is automatically opened and the vacuum pump is triggered to work, sucking the gas near the monitoring point into the detachable sampling gas cylinder; When the natural hydrogen concentration drops to a predetermined value, the solenoid valve is automatically closed and the vacuum pump stops pumping gas.

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