Integrated field soil gas sample collection device

Abstract

The invention relates to the technical field of soil gas samples, and provides an integrated device for collecting a soil gas sample in the field. The integrated field soil gas sample collecting device comprises a puncher and a collecting probe rod, the puncher comprises a puncher main body and a puncher head, the bottom of the puncher main body is of a closing-in structure, an opening is formed in the bottom of the puncher main body, the puncher head movably penetrates through the opening, a sampling chamber is arranged on the puncher head, and the collecting probe rod is arranged in the sampling chamber. A sampling opening is formed in the side wall of the puncher head, the puncher head has a punching state and a sampling state, in the punching state, the puncher head seals the opening, and the sampling opening is located in the puncher body; in a sampling state, the head of the puncher extends out of the opening, and the sampling opening is located outside and communicated with the sampling chamber; the collecting probe rod is arranged in the puncher main body, is mounted at the puncher head and is communicated with the sampling chamber.

Description

Technical Field

[0001] The present invention relates to the technical field of soil gas sample collection, and in particular to an integrated device for collecting soil gas samples in the field. Background Art

[0002] As a green, low-carbon, high-quality energy source, natural hydrogen is playing an increasingly important role in the global energy transition due to its high calorific value and pollution-free combustion. However, the exploration and development of natural hydrogen is still in its infancy, especially in China, where field exploration of natural hydrogen is almost a new research field. Although a few research teams have begun to pay attention to the exploration of natural hydrogen resources, equipment and devices specifically used for field natural hydrogen collection and testing are still scarce.

[0003] In China, the field exploration equipment and technology for natural hydrogen are almost completely blank. The current technical means mainly rely on general soil sampling equipment and laboratory analysis methods, which have many shortcomings in the collection and analysis of natural hydrogen, especially in preventing sample contamination and improving sampling accuracy. Due to the lack of suitable equipment, the current exploration work is inefficient and the data quality is difficult to guarantee, which seriously limits the progress of natural hydrogen resource development. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the related art. To this end, the present application proposes an integrated field soil gas collection device, which is particularly suitable for collecting soil gas samples in natural hydrogen exploration. The device includes a puncher for punching holes in the soil and a collection probe for collecting soil gas samples, aiming to solve the sample contamination and operation complexity problems caused by equipment replacement in traditional sampling methods.

[0005] According to an embodiment of the present application, an integrated device for collecting soil gas samples in the field is proposed, including a puncher and a collection probe rod, including a puncher body and a puncher head, the bottom of the puncher body is a closing structure, the bottom of the puncher body is provided with an opening, the puncher head is movably inserted into the opening, the puncher head is provided with a sampling chamber, the side wall of the puncher head is provided with a sampling port, the puncher head has a punching state and a sampling state, in the punching state, the puncher head seals the opening, and the sampling port is located inside the puncher body; in the sampling state, the puncher head extends out of the opening, and the sampling port is located to connect the sampling chamber to the outside; the collection probe rod is arranged inside the puncher body, the collection probe rod is installed on the puncher head, and the collection probe rod is connected to the sampling chamber.

[0006] According to the integrated device for collecting soil gas samples in the field according to the embodiment of the present application, the collection probe is located inside the puncher, and the puncher head is movably arranged in the opening of the puncher. When the puncher is needed to punch a hole, the puncher head seals the opening to effectively prevent outside air from mixing into the sample. When sampling is needed, the puncher extends out of the opening to directly collect gas samples through the sampling port to ensure the purity and accuracy of the sampling. The integrated device for collecting soil gas samples in the field of the present application integrates the punching and sampling functions into one device, thereby avoiding problems such as air pollution and collection difficulties that may be introduced during equipment replacement, simplifying the operation process, and significantly improving sampling efficiency.

[0007] According to an embodiment of the present application, the punch head is provided with a first snap-fit ​​connection structure, the opening is provided with a second snap-fit ​​connection structure, and the first snap-fit ​​connection structure can be snapped into the second snap-fit ​​connection structure.

[0008] According to one embodiment of the present application, the punch head includes a punch tip and a head body, the head body is detachably connected to the punch tip, the sampling port is arranged on the head body, in the punching state, the punch tip seals the opening, in the sampling state, part of the head body extends out of the opening, and the sampling port is connected to the outside world.

[0009] According to one embodiment of the present application, the head body includes a first component, a transition component, and a second component connected in sequence, the cross-sectional area of ​​the first component is larger than the cross-sectional area of ​​the opening, the shape of the transition component is adapted to the closing structure, the cross-sectional area of ​​the second component is smaller than or equal to the cross-sectional area of ​​the opening, the second component is suitable for extending out of the opening, the sampling port is arranged on the side wall of the second component, and the second component is threadedly connected to the punch tip.

[0010] According to an embodiment of the present application, the collection probe is threadedly connected to the first component, and a sealing ring is provided at the connection between the collection probe and the first component.

[0011] According to an embodiment of the present application, the punch tip is a solid conical tip structure, and the cross-sectional area of ​​the punch tip on a side close to the opening is larger than the cross-sectional area of ​​the opening.

[0012] According to one embodiment of the present application, the punch tip is threadedly connected to the head body.

[0013] According to one embodiment of the present application, the hole punch includes: a first extension rod and a top structure, wherein the first extension rod is detachably connected to the top of the hole punch body; the top structure is detachably connected to the top of the hole punch body or the top of the first extension rod; The integrated device for collecting soil gas samples in the field comprises a second extension rod, which is detachably connected to the top of the collection probe rod.

[0014] According to an embodiment of the present application, a plurality of scales are provided on the punch body and the first extension rod along the height direction of the punch body and the first extension rod, wherein the scales are marked as the distance between the position of the scales and the opening; And / or, the distance between the top structure and the opening is greater than the height of the collection probe rod.

[0015] According to one embodiment of the present application, it includes: The analysis and sampling device is connected to the collection probe and is used to analyze at least one of the type and concentration of the gas sample measured by the collection probe.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the structure of an integrated device for collecting soil gas samples in the field provided in an embodiment of the present application.

[0019] Figure 2 It is a schematic diagram of the structure of the head body provided in an embodiment of the present application.

[0020] Figure 3 This is one of the schematic diagrams of the assembly structure of the punch head provided in the embodiment of the present application.

[0021] Figure 4 This is the second schematic diagram of the assembly structure of the punch head provided in the embodiment of the present application.

[0022] Figure 5 This is the third schematic diagram of the assembly structure of the punch head provided in the embodiment of the present application.

[0023] Figure 6 This is one of the schematic diagrams of the assembly structure of the collection probe rod and the punch head provided in the embodiment of the present application.

[0024] Figure 7This is the second schematic diagram of the assembly structure of the collection probe rod and the punch head provided in the embodiment of the present application.

[0025] Figure 8 This is the third schematic diagram of the assembly structure of the collection probe rod and the punch head provided in the embodiment of the present application.

[0026] Fig. 9 This is the fourth schematic diagram of the assembly structure of the collection probe rod and the punch head provided in the embodiment of the present application.

[0027] Fig.10 It is a schematic diagram of the top view of the structure of an integrated device for collecting soil gas samples in the field provided in an embodiment of the present application.

[0028] Fig.11 It is one of the schematic diagrams of the assembly structure of the top structure and the punch body provided in the embodiment of the present application.

[0029] Fig.12 This is the second schematic diagram of the assembly structure of the top structure and the punch body provided in the embodiment of the present application.

[0030] Fig.13 This is the third schematic diagram of the assembly structure of the top structure and the punch body provided in the embodiment of the present application.

[0031] Fig.14 It is a structural schematic diagram of an integrated device for collecting soil gas samples in the field provided by another embodiment of the present application.

[0032] Reference numerals: 100, punch; 110, punch body; 111, opening; 120, punch head; 121, sampling port; 122, sampling chamber; 123, punch tip; 124, head body; 125, first component; 126, transition component; 127, second component; 130, top structure; 140, extension rod; 200, collection probe; 300. Analytical sampling equipment; 400. Second extension rod. DETAILED DESCRIPTION

[0033] The following is a further detailed description of the implementation of the present application in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but cannot be used to limit the scope of the present application.

[0034] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0035] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, wherein the fixed connection can include an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0036] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations 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 one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0038] Combine the following Figures 1 to 14 The invention describes an integrated device for collecting soil gas samples in the field.

[0039] According to an integrated device for collecting soil gas samples in the field (hereinafter referred to as the device) proposed in an embodiment of the present application, please refer to Figures 1 to 3 The device includes a puncher 100 and a collection probe 200. The puncher 100 includes a puncher body 110 and a puncher head 120. The bottom of the puncher body 110 is a closing structure. The bottom of the puncher body 110 is provided with an opening 111. The puncher head 120 is movably arranged in the opening 111. The puncher head 120 is provided with a sampling chamber 122. The side wall of the puncher head 120 is provided with a sampling port 121. The puncher head 120 has a punching state and a sampling state. In the punching state, the puncher head 120 seals the opening 111, and the sampling port 121 is located inside the puncher body 110; in the sampling state, the puncher head 120 extends out of the opening 111, and the sampling port 121 is located outside and connected to the sampling chamber 122; the collection probe 200 is arranged inside the puncher body 110 and installed on the puncher head 120. The collection probe 200 is connected to the sampling chamber 122.

[0040] According to the integrated device for collecting soil gas samples in the field according to the embodiment of the present application, the collection probe 200 is located inside the puncher 100, and the puncher head 120 is movably arranged in the opening 111 of the puncher 100. When the puncher 100 needs to punch a hole, the puncher head 120 seals the opening 111, effectively preventing outside air from mixing into the sample. When sampling is required, the puncher 100 extends out of the opening 111, and directly collects gas samples through the sampling port 121, ensuring the purity and accuracy of the sampling. The integrated device for collecting soil gas samples in the field of the present application integrates the punching and sampling functions into one device, thereby avoiding problems such as air pollution and collection difficulties that may be introduced during equipment replacement, simplifying the operation process, and significantly improving sampling efficiency.

[0041] It is understandable that the integrated field soil gas sample collection device of the embodiment of the present application integrates the punching and sampling functions into one, and the quick switching between the punching and sampling states is realized through the movable design of the punch head 120, which simplifies the operation process. The user does not need to frequently change tools or adjust equipment to continuously complete the entire process from punching to sampling, which greatly improves work efficiency and also improves the purity of the sampling, avoiding the mixing of air into the soil gas sample during the tool replacement process, thereby ensuring that the collected gas sample is purer and more accurate, and improving the reliability of the data.

[0042] It can be understood that the puncher 100 is a tool for drilling holes in the soil, and the collection probe 200 is located inside the puncher 100. The collection probe 200 is connected to the sampling chamber 122 to collect gas. The puncher 100 includes a puncher body 110 and a puncher head 120. The bottom of the puncher body 110 is designed as a closed structure. The bottom of the puncher body 110 can be a conical structure. The conical structure is conducive to the punching work. The puncher head 120 is the main component of the puncher 100 for drilling holes. It can adopt a solid conical structure. In one embodiment, the lower half of the puncher head 120 is made of tungsten alloy or tungsten carbide coated steel, which can provide excellent durability and wear resistance in hard soil.

[0043] The upper part of the punch head 120 can flexibly move up and down in the opening 111 to achieve a rapid conversion between the punching and sampling states. The punch head 120 has a built-in sampling chamber 122 and a sampling port 121 on the side wall. In the punching state, the punch head 120 tightly seals the opening 111 to ensure that the outside air cannot enter during the punching process, effectively preventing air pollution. When sampling is required, only a simple operation is required to extend the punch head 120 out of the opening 111. At this time, the sampling port 121 is connected to the outside world, and the gas in the soil can enter the sampling chamber 122 through the sampling port 121, ensuring the purity and accuracy of the sampling.

[0044] It should be noted that the device is not only suitable for the exploration of natural hydrogen, but can also be widely used in the collection of other soil gases, such as helium, oxygen, methane, carbon dioxide and radon. Through the integrated field soil gas sample collection device of the present invention, efficient and reliable field gas sampling can be achieved, which is helpful to promote the development and utilization of natural hydrogen resources, and also provides strong technical support for research in the fields of environmental monitoring and agricultural science.

[0045] According to an embodiment of the present application, please refer to Figures 3 to 5 The punch head 120 is provided with a first snap-fit ​​connection structure, and the opening 111 is provided with a second snap-fit ​​connection structure (the first snap-fit ​​structure and the second snap-fit ​​structure are not marked in the figure), and the first snap-fit ​​connection structure can be snapped into the second snap-fit ​​connection structure.

[0046] It is understandable that the first snap-fit ​​connection structure is provided on the punch head 120, and is used to snap with the second snap-fit ​​connection structure at the opening 111 of the punch body 110, so as to fix and seal the punch head 120. The first snap-fit ​​connection structure and the second snap-fit ​​connection structure can be made of high-strength materials, which can withstand the vibration and impact force during the punching process, and ensure the stability and durability of the device. Through the snap-fit ​​of the first snap-fit ​​connection structure and the second snap-fit ​​connection structure, it can be ensured that the punch head 120 tightly seals the opening 111 in the punching state. When it is necessary to sample gas, the first snap-fit ​​connection structure is disengaged from the second snap-fit ​​connection structure, thereby releasing the restriction, so that the punch head 120 can extend out of the opening 111.

[0047] In one embodiment, the first buckle connection structure and the second buckle connection structure are press-fit structures.

[0048] According to an embodiment of the present application, please refer to Figures 3 to 5 The punch head 120 includes a punch tip 123 and a head body 124. The head body 124 is detachably connected to the punch tip 123. The sampling port 121 is provided on the head body 124. In the punching state, the punch tip 123 seals the opening 111. In the sampling state, part of the head body 124 extends out of the opening 111, and the sampling port 121 is connected to the outside.

[0049] It is understandable that the punch tip 123 is the front end portion of the punch head 120, which is usually designed to be sharp and used to drill holes in the soil. The head body 124 is the main body of the punch head 120, and the head body 124 is detachably connected to the punch tip 123, and is provided with a sampling port 121, which is used to connect to the outside world to collect gas samples in the sampling state. The detachable connection between the punch tip 123 and the head body 124 realizes the modular design of the device, which is convenient for manufacturing, assembly and maintenance, and also helps to reduce production costs and improve production efficiency.

[0050] In one embodiment, when the punch head 120 and the punch body 110 are assembled, the head body 124 and the punch tip 123 can be fixedly installed and connected first, and then the punch tip 123 and the opening 111 of the punch body 110 are snap-fitted and installed (it can be the snap-fitting method of the first snap-fit ​​connection structure and the second snap-fit ​​connection structure mentioned above).

[0051] The detachable connection design allows the punch tip 123 and the head body 124 to be easily disassembled for cleaning and maintenance. The user can regularly maintain the device to ensure that it is in the best working condition and extend the service life of the device. In addition, the user can choose a combination of the punch tip 123 and the head body 124 of different specifications or materials according to different soil conditions and sampling requirements. This design allows the device to adapt to various complex environments.

[0052] According to one embodiment of the present application, the punch tip 123 is threadedly connected to the head body 124. It is understandable that the threaded connection can achieve connection and disassembly between the punch tip 123 and the head body 124 by rotation. This design not only improves work efficiency, but also reduces the difficulty of operation, allowing users to perform maintenance and replacement more conveniently.

[0053] According to an embodiment of the present application, please refer to Figures 2 to 5 The head body 124 includes a first component 125, a transition component 126 and a second component 127 which are connected in sequence. The cross-sectional area of ​​the first component 125 is larger than the cross-sectional area of ​​the opening 111. The shape of the transition component 126 is adapted to the closing structure. The cross-sectional area of ​​the second component 127 is smaller than or equal to the cross-sectional area of ​​the opening 111. The second component 127 is suitable for extending out of the opening 111. The sampling port 121 is arranged on the side wall of the second component 127. The second component 127 is threadedly connected to the punch tip 123.

[0054] It is understandable that the cross-sectional area of ​​the first component 125 is larger than the cross-sectional area of ​​the opening 111, so as to prevent the head body 124 from being separated from the opening 111. At the same time, the opening 111 can be firmly closed when the punch 100 is in a non-sampling state to prevent external impurities from entering. The shape of the transition component 126 is adapted to the closing structure, so that when the head body 124 is in a sampling state, the transition component 126 can fit tightly with the closing structure to prevent external impurities from entering the punch body 110. The cross-sectional area of ​​the second component 127 is less than or equal to the cross-sectional area of ​​the opening 111, so that in the sampling state, the second component 127 can easily extend out of the opening 111.

[0055] In the punching state, the first component 125 and the transition component 126 jointly close the opening 111, protecting the inside of the punch 100 from soil contamination, while ensuring smooth punching. When sampling is required, the second component 127 can be extended out of the opening 111 by pushing or rotating or other means, and the sampling port 121 is then connected to the outside world. At this time, the gas in the soil can enter the inside of the punch 100 through the sampling port 121, completing the sampling process. After the sampling is completed, the second component 127 is retracted into the opening 111 by reverse operation, forming a closed state again, and preparing for the next punching or sampling operation.

[0056] In one embodiment, the transition component 126 is a hollow truncated cone structure, the first component 125 and the second component 127 are hollow cylindrical structures, and the head body 124 is made of titanium alloy (such as Ti-6Al-4V).

[0057] According to an embodiment of the present application, please refer to Figure 1 , Figures 6 to 9 The collection probe 200 is threadedly connected to the first component 125, and a sealing ring is provided at the connection between the collection probe 200 and the first component 125. The threaded connection between the collection probe 200 and the first component 125 can ensure that the two will not loosen due to external pressure or vibration during the sampling process, thereby ensuring the continuity and stability of the sampling.

[0058] It is understandable that the sealing ring is the key to ensure the sealing of the connection between the collection probe 200 and the first component 125. During the sampling process, soil gas needs to enter the sampling device through the collection probe 200. If there is a gap in the connection, it may cause gas leakage, affecting the accuracy and reliability of sampling. The sealing ring can effectively fill the tiny gap in the connection, prevent gas leakage, and improve the sealing of sampling.

[0059] In one embodiment, in order to ensure the stability of the threaded connection, a locking nut or a spring washer is used, and the material is selected from high elastic steel or 301 stainless steel.

[0060] It is understood that the outer surface of the thread is designed with a flat tool contact surface, which is convenient for tightening and loosening with a standard wrench or power tool. The thread design takes into account the convenience of field operation, ensuring that the device can be assembled and disassembled quickly and efficiently in field operations. According to an embodiment of the present application, the punch tip 123 is a solid conical tip structure, and the cross-sectional area of ​​the side of the punch tip 123 close to the opening 111 is larger than the cross-sectional area of ​​the opening 111 .

[0061] It can be understood that the solid conical design enables the punch tip 123 to have excellent soil penetration. The sharp cone can easily cut into the soil, reduce resistance during punching, and improve punching efficiency. At the same time, the solid structure also increases the strength and durability of the tip, enabling it to maintain stable performance in hard soil.

[0062] It can be understood that the cross-sectional area of ​​the side of the punch tip 123 close to the opening 111 is larger than the cross-sectional area of ​​the opening 111. This design ensures that the punch tip 123 can tightly close the opening 111 in the punching state. Even if there is pressure or vibration in the soil, this design can effectively prevent soil or gas from leaking from the connection, thereby improving the sealing and accuracy of sampling.

[0063] According to an embodiment of the present application, please refer to Figure 1 , Figures 10 to 13 The hole punch 100 includes a top structure 130 , which is detachably connected to the top of the hole punch body 110 .

[0064] It is understandable that the top structure 130 and the top of the punch body 110 are detachably connected, which improves the flexibility and maintainability of the device, and also enhances the functionality and user experience of the device. During the punching process, the top structure 130 needs to be kept closed to ensure the stability of the collection probe 200 inside the punch body 110 and the sealing inside the punch body 110. When sampling is required, the top structure 130 can be disassembled to facilitate the user to operate the internal collection probe 200.

[0065] According to an embodiment of the present application, please refer to Figures 10 to 14 The hole punch 100 includes a first extension rod 140 detachably connected to the top of the hole punch body 110 ; and a top structure 130 detachably connected to the top of the hole punch body 110 .

[0066] It is understandable that the user can flexibly combine and disassemble the first extension rod 140 according to different application scenarios and requirements to meet specific punching requirements. The main function of the first extension rod 140 is to increase the height of the punch body 110, thereby increasing the depth of the punch, so that the user can perform gas collection work at a deeper position.

[0067] The top of the punch body 110 may be designed with interfaces connected to the first extension rod 140 and the top structure 130. These interfaces may adopt threaded, snap-fit ​​or other forms of connection mechanisms to ensure the firmness of the connection and easy disassembly.

[0068] According to an embodiment of the present application, the device includes a second extension rod 400 , which is detachably connected to the top of the collection probe rod 200 .

[0069] It is understandable that the user can flexibly combine and disassemble the second extension rod 400 according to different application scenarios and requirements to meet specific punching requirements. When the first extension rod 140 is installed on the top of the punch body 110, the collection probe 200 can increase the height of the collection probe 200 through the second extension rod 400, so that the user can perform gas collection work at a deeper position.

[0070] It is understandable that the top of the acquisition probe rod 200 is designed with an interface connected to the second extension rod 400. This interface may adopt a thread, a buckle, a slot or other forms of connection mechanism to ensure the firmness of the connection and easy disassembly.

[0071] According to an embodiment of the present application, a plurality of scales are provided on the punch body 110 and the first extension rod 140 along the height direction of the punch body 110 and the first extension rod 140 , wherein the scales are marked as the distance between the position of the scales and the opening 111 .

[0072] It is understandable that the scale marks the distance between the position and the opening 111 on the punch body 110. This provides an intuitive reference for the user, allowing them to accurately know the relative distance between the current punching position and the opening 111.

[0073] It should be noted that the scales are distributed along the height direction of the punch body 110 and the first extension rod 140. For example, the punch body 110 may be marked with a scale of 0 cm-110 cm, and the first extension rod 140 may be marked with a scale of 110 cm-220 cm.

[0074] In one embodiment, when a threaded connection is adopted between the second extension rod 400 and the collection probe rod 200, the thread direction of the punch tip 123 is the same as the thread direction of the second extension rod 400, so that when the second extension rod 400 and the collection probe rod 200 are tightened, the connection between the punch tip 123 and the head body 124 is stable.

[0075] According to an embodiment of the present application, the distance between the top structure 130 and the opening 111 is greater than the height of the collection probe 200 .

[0076] It is understandable that the distance between the top structure 130 and the opening 111 is relatively large, providing ample space for the operator. When inserting or removing the collection probe 200, the operator can have a larger range of movement, thereby operating more conveniently and reducing operating difficulty and errors.

[0077] According to an embodiment of the present application, an analysis sampling device 300 is included. The analysis sampling device 300 is connected to the collection probe 200 and is used to analyze at least one of the type and concentration of the gas sample measured by the collection probe 200.

[0078] It is understandable that the soil gas sample measured by the sampling probe 200 is analyzed by the sampling device 300. This analysis may include: gas sample type and gas sample concentration. By directly analyzing at the sampling site, soil gas data can be quickly obtained, thereby saving time and cost.

[0079] The following describes the integrated field soil gas sample collection device of the present application in conjunction with a specific embodiment: In one embodiment, the main body of the punch 100 is 1.1 meters long, 3 centimeters in diameter, and 5 millimeters thick. The main body is made of high-strength alloy steel (such as 42CrMo alloy steel), has excellent durability and impact resistance, and is suitable for use in complex soil conditions. The surface is galvanized or chrome-plated to improve corrosion resistance and oxidation resistance.

[0080] The top structure 130 is 0.13 meters high and is connected to the puncher 100 body through a coarse thread. The thread length is 5 turns. The thread material and the top material are both high-strength alloy steel (such as 304 stainless steel). The surface is galvanized or chrome-plated to ensure corrosion resistance and wear resistance, and can withstand the impact of the drilling rig. The total height of the puncher 100 after connecting to the top is 1.23 meters, which matches the 1.2-meter height of the collection probe 200, and a 3-centimeter operating margin is reserved to facilitate the connection of the gas line and sample collection in actual operation.

[0081] The collection probe 200 has a length of 1.2 meters and a diameter of 1.5 centimeters. The material is stainless steel (such as 316L stainless steel) or high-strength engineering plastic (such as polyamide PA6 engineering plastic) to ensure the purity of the gas sample and the durability of the probe.

[0082] The following describes in detail the method of using the integrated field soil gas sample collection device of the present application in conjunction with an embodiment: (1) Preparation for punching: First, the punch tip 123 is connected to the head body 124 through threads, and then the entire punch head 120 is fixed to the bottom of the punch body 110 by pressing the snap-fit ​​connection through the first snap-fit ​​connection structure and the second snap-fit ​​connection structure. This design ensures that the punch tip 123 will not be pushed out prematurely during the process of being driven into the soil, and prevents soil from entering the punch 100. After the punch tip 123 is installed, the top structure 130 of the punch 100 is tightly connected to the punch body 110 through threads to form a closed integral structure to withstand the impact and pressure of the drilling rig.

[0083] (2) Drilling into the soil: Use a pulse drill to insert the punch 100 into the soil, and stop the operation after drilling to a predetermined depth.

[0084] (3) Removing the top structure 130: After drilling is completed, the top structure 130 of the punch 100 is loosened by rotation to expose the insertion port of the collection probe 200. After the top structure 130 is removed, the punch body 110 is still stably fixed in the soil.

[0085] (4) Connecting the gas line and pulling up the punch 100: Insert the sampling probe 200 into the punch 100 and connect the gas line, pull up the punch 100 slightly to provide enough space, and then use the sampling probe 200 to push out the punch tip 123 so that the sampling probe 200 can extract the soil gas sample through the sampling port 121 on the punch tip 123.

[0086] (5) Sample collection: When the top of the punch 100 is open, soil gas samples are collected directly from the hole through the sampling probe 200 to ensure that there is no air pollution during the entire process.

[0087] 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 make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An integrated device for collecting soil gas samples in the field, characterized in that: include: A hole puncher (100) comprises a hole puncher body (110) and a hole puncher head (120); the bottom of the hole puncher body (110) is a closed structure; the bottom of the hole puncher body (110) is provided with an opening (111); the hole puncher head (120) is movably arranged through the opening (111); the hole puncher head (120) is provided with a sampling chamber (122); a side wall of the hole puncher head (120) is provided with a sampling port (121); the hole puncher head (120) has a hole punching state and a sampling state; in the hole punching state, the hole puncher head (120) seals the opening (111), and the sampling port (121) is located inside the hole puncher body (110); in the sampling state, the hole puncher head (120) protrudes from the opening (111), and the sampling port (121) is located outside and connected to the sampling chamber (122); A collection probe rod (200) is disposed inside the punch body (110) and mounted on the punch head (120); the collection probe rod (200) is connected to the sampling chamber (122).

2. The integrated device for collecting soil gas samples in the field according to claim 1, characterized in that: The punch head (120) is provided with a first buckle connection structure, the opening (111) is provided with a second buckle connection structure, and the first buckle connection structure can be buckled with the second buckle connection structure.

3. The integrated device for collecting soil gas samples in the field according to claim 1, characterized in that: The punch head (120) comprises a punch tip (123) and a head body (124); the head body (124) is detachably connected to the punch tip (123); the sampling port (121) is provided on the head body (124); in the punching state, the punch tip (123) seals the opening (111); in the sampling state, a portion of the head body (124) extends out of the opening (111), and the sampling port (121) is connected to the outside.

4. The integrated device for collecting soil gas samples in the field according to claim 3, characterized in that: The head body (124) comprises a first component (125), a transition component (126) and a second component (127) which are connected in sequence, the cross-sectional area of ​​the first component (125) being larger than the cross-sectional area of ​​the opening (111), the shape of the transition component (126) being adapted to the closing structure, the cross-sectional area of ​​the second component (127) being smaller than or equal to the cross-sectional area of ​​the opening (111), the second component (127) being adapted to extend out of the opening (111), the sampling port (121) being arranged on a side wall of the second component (127), and the second component (127) being threadedly connected to the punch tip (123).

5. The integrated device for collecting soil gas samples in the field according to claim 4, characterized in that: The collection probe rod (200) is threadedly connected to the first component (125), and a sealing ring is provided at the connection between the collection probe rod (200) and the first component (125).

6. The integrated device for collecting soil gas samples in the field according to claim 3, characterized in that: The punch tip (123) is a solid conical tip structure, and the cross-sectional area of ​​the side of the punch tip (123) close to the opening (111) is larger than the cross-sectional area of ​​the opening (111).

7. The integrated device for collecting soil gas samples in the field according to claim 3, characterized in that: The punch tip (123) is threadedly connected to the head body (124).

8. The integrated device for collecting soil gas samples in the field according to any one of claims 1 to 7, characterized in that: The hole punch (100) comprises: a first extension rod (140) and a top structure, wherein the first extension rod (140) is detachably connected to the top of the hole punch body (110); the top structure (130) is detachably connected to the top of the hole punch body (110) or the top of the first extension rod (140); The integrated device for collecting soil gas samples in the field comprises a second extension rod (400), wherein the second extension rod (400) is detachably connected to the top of the collection probe rod (200).

9. The integrated device for collecting soil gas samples in the field according to claim 8, characterized in that: A plurality of scales are provided on the punch body (110) and the first extension rod (140) along the height direction of the punch body (110) and the first extension rod (140), wherein the scales are marked as the distance between the position of the scales and the opening (111); And / or, the distance between the top structure (130) and the opening (111) is greater than the height of the collection probe rod (200).

10. The integrated device for collecting soil gas samples in the field according to any one of claims 1 to 7, characterized in that: include: The analysis and sampling device (300) is connected to the collection probe (200) and is used to analyze at least one of the type and concentration of the gas sample measured by the collection probe (200).

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