Natural hydrogen sampler, leakage measuring device, gas sampler and leakage measuring device

Abstract

The utility model provides a natural hydrogen sampler, a leakage measuring device, a gas sampler and a leakage measuring device, the sampler comprises a gas trapping pipe, a closed pipe and a conical head, and the gas trapping pipe is provided with a trapping hole; the closed pipe is in threaded connection with the upper end of the gas trapping pipe, and a gas production hose is inserted into the closed pipe. The device is mainly used for collecting hydrogen, helium or / and other gases in the soil, can be used for gas analysis, leakage confirmation and quantification, environmental monitoring, exploration of natural hydrogen, helium or other related minerals, resource investigation and the like, and is suitable for gas leakage areas such as'purlin ', fault zones, structural suture lines and the like. According to the device, free gas at the depth of 0.9-1m in soil is collected, and the content of natural hydrogen, helium or / and other gas in the free gas is measured, so that the gas leakage flow is quantified. The device is easy and convenient to operate, convenient to carry and suitable for wide-range field collection, and the efficiency and accuracy of natural hydrogen and other gas exploration are improved.

Description

Technical Field

[0001] This utility model relates to the field of resource exploration technology, and in particular to a natural hydrogen sampler and a leakage measurement device, a gas sampler and a leakage measurement device. Background Technology

[0002] Hydrogen energy is a crucial new clean energy source for addressing global climate change and air pollution. In China, hydrogen energy sources primarily rely on coal-based hydrogen production, industrial by-product hydrogen, and water electrolysis. However, naturally enriched hydrogen (natural hydrogen) holds promise as a low-cost, zero-carbon emission first-class energy source. The discovery of natural hydrogen (also known as golden hydrogen, white hydrogen, decarbonized hydrogen, zero-carbon hydrogen, etc.) was accidental. The world's first high-purity natural hydrogen well was accidentally discovered in 2011 by Petroma (now Hydroma) in the Bourakebougou region near Mali's capital. Since 2015, it has been used for power generation in local villages and towns, reducing electricity costs by 84%, demonstrating the enormous potential of natural hydrogen as a long-term, stable hydrogen source. Data from natural hydrogen extraction in Mali shows that its production cost can be as low as $1 / kg, making natural hydrogen more economically competitive compared to water electrolysis and fossil fuel-based hydrogen production.

[0003] Sampling and measuring hydrogen and associated gases (such as helium, carbon dioxide, and methane) in soil is a crucial method for exploring natural hydrogen and other gaseous mineral deposits. Early studies, by measuring soil hydrogen concentration and its spatial distribution, discovered numerous circular depressions releasing hydrogen in areas such as Russia and the east coast of the United States, later known as "Fairy Circles" or "Carolina Bays." Further research revealed that, in addition to Fairy Circles, geological structures such as tectonic sutures and fault zones are also important areas for natural hydrogen exploration, potentially indicating significant natural hydrogen leakage. Furthermore, hydrogen often coexists with other gases (such as helium and carbon dioxide), and simultaneously measuring hydrogen and its associated gases can yield richer geological background information. Integrating the leakage characteristics of multiple gases allows for more accurate inferences about the source, enrichment conditions, and migration pathways of hydrogen. Therefore, measuring and analyzing hydrogen and other gases in soil is an important exploration technique.

[0004] Existing shallow soil gas measurement devices, including threaded samplers, are suitable for analyzing adsorbed or mixed gases, but they have significant limitations in measuring highly mobile, free gases such as natural hydrogen and helium. Limitations of threaded samplers include the possibility of friction or chemical reactions between the metal sampler and mineral particles, inducing hydrogen generation and interfering with the original hydrogen leakage signal, thus reducing measurement accuracy. When the threaded sampler is screwed into the soil, it compresses gas within an 8-10 cm radius into the lower sealed orifice, increasing the gas pressure inside. During the extraction and measurement process, sudden decompression can cause significant desorption of adsorbed gas from soil particle surfaces, resulting in measurements dominated by adsorbed gas rather than actual free gas, failing to accurately capture gas leakage. Furthermore, the sampling depth of threaded samplers is only about 35 cm, a depth primarily affected by surface soil microorganisms, which may absorb or release hydrogen, further interfering with the original signal of natural hydrogen leakage. Due to insufficient sampling depth, threaded samplers are unable to detect natural hydrogen, helium, and other gases leaking from deep within the Earth, making them unsuitable for quantitative studies of leaks and accurate assessments of resources.

[0005] Existing soil gas samplers suffer from clogging issues. These samplers typically have a collection hole in the tube wall to extract gas from the soil. During use, a steel rod must first be used to make the hole before the sampler is inserted. However, when the steel rod is pulled out, the hole tends to narrow, causing soil clogging the collection hole when the sampler is inserted, thus affecting the smoothness of gas collection. Utility Model Content

[0006] This invention aims to efficiently collect free hydrogen from soil, effectively avoiding interference from measurement operations, adsorbed gas interference, gas leakage, and pore blockage. Therefore, embodiments of this invention provide a natural hydrogen sampler and leakage measurement device, a gas sampler and leakage measurement device, suitable for large-scale field collection, improving the accuracy and efficiency of natural hydrogen resource exploration.

[0007] One embodiment of this utility model proposes a natural hydrogen sampler, comprising: a gas collection tube and a sealing tube. The gas collection tube has a first end and a second end along the axial direction. The first end of the gas collection tube is connected to a cone, the outer diameter of which is larger than the outer diameter of the gas collection tube. The tube wall of the gas collection tube has a plurality of collection holes near the cone. The sealing tube is detachably connected to the second end of the gas collection tube. The outer diameter of the sealing tube is larger than the outer diameter of the gas collection tube. A gas sampling hose is inserted into the sealing tube and is connected to the gas collection tube.

[0008] In some embodiments, a window is provided on the wall of the end of the closed tube away from the gas collection tube, and the gas sampling hose is inserted into the closed tube through the window.

[0009] In some embodiments, a hose connector is fixedly connected to the second end of the gas collection tube, and the hose connector is inserted into the gas collection hose.

[0010] In some embodiments, the sealing tube is threadedly connected to the second end of the gas collection tube.

[0011] In some embodiments, the outer side of the end of the closed tube that connects to the gas collecting tube is a transition cone surface.

[0012] In some embodiments, the total length of the gas collection tube and the sealing tube after assembly is 0.7~1.2m.

[0013] In some embodiments, the sealing tube has an internal thread at its connection with the gas collecting tube, and the second end of the gas collecting tube has an external thread that engages with the internal thread.

[0014] In some embodiments, the collection holes are evenly distributed in four groups along the circumference of the gas collection tube, and each group includes multiple collection holes arranged in parallel.

[0015] In some embodiments, both the gas collection tube and the sealing tube are made of stainless steel.

[0016] A second aspect of this utility model provides a natural hydrogen leakage measurement device, including the aforementioned natural hydrogen sampler.

[0017] A third aspect of this utility model provides a gas sampler, including the aforementioned natural hydrogen sampler.

[0018] A fourth aspect of this utility model provides a gas leakage measuring device, including the gas sampler described above. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings.

[0020] in:

[0021] Figure 1 This is a schematic diagram of the structure of the natural hydrogen sampler in an embodiment of this utility model;

[0022] Figure 2 This is a longitudinal cross-sectional view of the natural hydrogen sampler in an embodiment of this utility model;

[0023] Figure 3 for Figure 2 A schematic diagram of the closed tube structure in the diagram;

[0024] Figure 4 for Figure 2 A schematic diagram of the gas collection tube in the diagram;

[0025] Figure 5 for Figure 2 A schematic diagram of the hose connector in the diagram;

[0026] Figure 6 for Figure 2 A schematic diagram of the cone-shaped structure in the diagram;

[0027] Figure label:

[0028] 1. Gas sampling hose; 2. Sealing pipe; 3. Transition cone surface; 4. Gas collection pipe; 5. Cone; 6. Collection hole; 7. Window; 8. Hose connector. Detailed Implementation

[0029] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0030] The following description, with reference to the accompanying drawings, describes embodiments of the present invention, including a natural hydrogen sampler and a leakage measuring device, a gas sampler and a leakage measuring device.

[0031] like Figure 1-6 As shown, one embodiment of this utility model proposes a natural hydrogen sampler, comprising: a gas collection tube 4 and a sealing tube 2. The gas collection tube 4 has a first end and a second end along the axial direction. The first end of the gas collection tube 4 is connected to a cone 5. The outer diameter of the cone 5 is larger than the outer diameter of the gas collection tube 4. The tube wall of the gas collection tube 4 has a plurality of collection holes 6 near the cone 5. The sealing tube 2 is detachably connected to the second end of the gas collection tube 4. The outer diameter of the sealing tube 2 is larger than the outer diameter of the gas collection tube 4. A gas sampling hose 1 is inserted into the sealing tube 2 and is connected to the gas collection tube 4.

[0032] The natural hydrogen sampler of this utility model embodiment, by setting a cylindrical gas collection tube 4 and a sealing tube 2, does not put pressure on the soil layer of the borehole wall, nor does it allow gas around the borehole to enter the lower cavity, and does not disturb the surrounding soil. The gas inside the borehole is basically in a natural state, which is conducive to the collection of free gas.

[0033] By setting the cone head 5, on the one hand, the hole can be cleared, making it easier for the soil gas sampler to reach the bottom of the hole and protecting the gas collection tube 4; on the other hand, designing the cone head 5 so that its outer diameter is larger than the outer diameter of the gas collection tube 4 can prevent the soil on the inner wall of the hole from clogging the collection hole 6 and ensure that the gas path is unobstructed.

[0034] The natural hydrogen sampler of this utility model can collect free gas at a depth of 0.9~1m in the soil. Its purpose is to measure the content of natural hydrogen and associated gases in order to quantify the hydrogen leakage flow. It is easy to operate, suitable for large-scale field collection, and improves the efficiency and accuracy of natural hydrogen and other gas exploration.

[0035] By designing the gas collection tube and the sealing tube to be detachable, the device is easy to assemble and disassemble, and more convenient to carry.

[0036] The natural hydrogen sampler of this utility model embodiment is mainly used to collect hydrogen, helium and / or other gases in soil. It can be used for gas analysis, leakage confirmation and quantification, environmental monitoring, exploration of natural hydrogen, helium or other related minerals, resource surveys, etc. It is suitable for gas leakage areas such as Fairy Circles, fault zones, and tectonic sutures. It is practical, economical and easy to promote and use.

[0037] The soil gas sampler of this utility model is usually used in a vertical position, but in a few cases it can also be used in a horizontal or inclined position, depending on the sampling requirements.

[0038] In some embodiments, such as Figure 3 As shown, a window 7 is provided on the wall of the end of the closed tube 2 away from the gas collection tube 4, and the gas sampling hose 1 is inserted into the closed tube 2 through the window 7.

[0039] By setting window 7, it can be used to insert the gas sampling hose 1 into the closed tube 2, and it can also be used to easily pull the whole sampler out of the soil.

[0040] Furthermore, windows 7 may be provided in two, three, four or more, and are evenly distributed around the circumference of the closed tube 2.

[0041] In some embodiments, such as Figure 2 , 5 As shown, a hose connector 8 is fixedly connected to the second end of the gas collection pipe 4, and the hose connector 8 is inserted into the gas collection hose 1.

[0042] The hose connector 8 has a vertically penetrating cavity inside, which is connected to both the gas sampling hose 1 and the gas collection pipe 4. The gas sampling hose 1 is pluggable and detachable from the hose connector 8. When the gas sampling hose 1 needs to be plugged in or unplugged, the connection between the sealing pipe 2 and the gas collection pipe 4 must first be disconnected.

[0043] Furthermore, the hose connector 8 includes an integrally formed thick section and a thin section. The thick section is located below the thin section and is inside the gas collection tube 4. The thin section extends upwards out of the gas collection tube 4 and is used to connect the hose connector 8. The hose connector 8 and the gas collection tube 4 are fixedly connected by welding.

[0044] By connecting the gas sampling hose 1 with the hose connector 8, the sealing of the sampling process is improved, the risk of gas leakage during deployment, sampling and measurement is significantly reduced, and the accuracy of measurement can be improved.

[0045] In some embodiments, such as Figure 2 As shown, the second end of the sealing tube 2 and the gas collecting tube 4 are connected by a thread. The threaded connection facilitates quick assembly and disassembly of the sealing tube 2 and the gas collecting tube 4.

[0046] In some embodiments, such as Figure 1 , 3 As shown, the outer side of the end of the closed tube 2 that is connected to the gas collection tube 4 is a transition cone surface 3.

[0047] Furthermore, the transition cone surface 3 has a structure that is wider at the top and narrower at the bottom. The outer diameter of the upper end face of the transition cone surface 3 is equal to the outer diameter of the closed tube 2, and the outer diameter of the lower end face of the transition cone surface 3 is equal to the outer diameter of the gas collecting tube 4.

[0048] Since the outer diameters of the closed tube 2 and the gas collection tube 4 are different, a transition cone surface 3 is provided to make the closed tube 2 and the gas collection tube 4 smoothly connected, avoiding the formation of sharp corners at the connection point, which would cause the soil on the inner wall of the hole to be scraped off when the sampler is inserted into the hole, thus causing blockage of the collection hole 6.

[0049] In some embodiments, the total length of the gas collecting tube 4 and the sealing tube 2 after assembly is 0.7~1.2m. Gas can be collected at a depth of 0.9~1m. When the hole is shallow, a shorter sealing tube 2 can be used instead, allowing for the collection of gas at a shallower depth.

[0050] In some embodiments, the sealing tube 2 has an internal thread at the junction with the gas collecting tube 4, and the second end of the gas collecting tube 4 has an external thread that engages with the internal thread.

[0051] Furthermore, the length of the internal thread is approximately equal to the height of the transition cone surface 3.

[0052] In some embodiments, four groups of trapping holes 6 are evenly distributed along the circumference of the gas trapping tube 4, each group including multiple trapping holes 6 arranged in parallel. This allows for sufficient trapping of gas at the bottom of the holes, improving measurement accuracy.

[0053] In some embodiments, both the gas collection tube 4 and the sealing tube 2 are made of stainless steel. This extends their service life and prevents corrosion of the pipes.

[0054] A second aspect of this invention provides a natural hydrogen leakage measurement device, including the aforementioned natural hydrogen sampler. It also includes an analytical measuring instrument. The natural hydrogen sampler is connected to the analytical measuring instrument via a gas sampling hose, or it is bottled in an aluminum foil gas bag or a sealed gas cylinder for analysis and measurement in a laboratory to determine the content of natural hydrogen in the soil and other indicators. This improves the efficiency and accuracy of the measurement.

[0055] A third aspect of this utility model provides a gas sampler, including the aforementioned natural hydrogen sampler.

[0056] The soil gas sampler in this embodiment of the present invention may have the same structure as the above-mentioned natural hydrogen sampler for soil, or may include the structure of the above-mentioned natural hydrogen sampler for soil, in order to illustrate that the above-mentioned natural hydrogen sampler for soil can also be used to collect other gases in the soil, such as helium, methane, carbon dioxide, hydrogen sulfide, etc.

[0057] A fourth aspect of this utility model provides a gas leakage measurement device, including the aforementioned gas sampler. It also includes an analytical measuring instrument. The gas sampler is connected to the analytical measuring instrument via a gas sampling hose, or the sample is bottled in an aluminum foil gas bag or a sealed gas cylinder for analysis and measurement in a laboratory to determine the content of the target gas in the soil and other indicators. This improves the efficiency and accuracy of the measurement.

[0058] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0061] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0062] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0063] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A natural hydrogen sampler characterized by, The natural hydrogen sampler comprises a gas trapping pipe, a sealing pipe and a gas collecting hose. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe.

2. The natural hydrogen sampler of claim 1, wherein, The sealing pipe is detachably connected to the second end of the gas trapping pipe.

3. The natural hydrogen sampler of claim 1, wherein, The sealing pipe is detachably connected to the second end of the gas trapping pipe.

4. The natural hydrogen sampler of claim 1, wherein, The sealing pipe is detachably connected to the second end of the gas trapping pipe.

5. The natural hydrogen harvester of claim 1, wherein, The sealing pipe is detachably connected to the second end of the gas trapping pipe.

6. The natural hydrogen sampler of claim 1, wherein, The sealing pipe is detachably connected to the second end of the gas trapping pipe.

7. The natural hydrogen harvester of claim 1, wherein, The sealing pipe is detachably connected to the second end of the gas trapping pipe.

8. A natural hydrogen permeation measurement apparatus, characterized by, The sealing pipe is detachably connected to the second end of the gas trapping pipe.

9. A gas sampler characterized by, The sealing pipe is detachably connected to the second end of the gas trapping pipe.

10. A gas leak measurement device, characterized by, The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing pipe is detachably connected to the second end of the gas trapping pipe. The sealing

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