Soil natural hydrogen sampling device

Abstract

The utility model discloses a soil natural hydrogen sampling device which comprises a gas sealing assembly and a gas collecting assembly, the gas sealing assembly comprises a gas inlet head, a conical hole packer, a communicating pipe, a silicone tube and a spherical valve, the top of the gas inlet head is in threaded connection with the bottom of the conical hole packer, and the middle of the gas inlet head and the bottom end of the silicone tube are fixedly installed; the top of the conical hole packer and the bottom end of the communicating pipe are fixedly installed, the silicone tube is arranged in the communicating pipe, the side end of the spherical valve and the end of the silicone tube are fixedly installed, the air collecting assembly comprises a filter, an air suction pump and a storage and collection bag, and the side end of the filter and the side face of the spherical valve are fixedly installed. The side end of the air suction pump is fixedly mounted on the side surface of the filter; the side end of the storage bag is fixedly mounted on the side surface of the air suction pump; by arranging the hole forming assembly and the gas sealing assembly, the full-sealing state in the gas production process is achieved, the influence of the surrounding environment is reduced, it is guaranteed that collected gas completely comes from soil, and a reliable sample is provided for hydrogen testing.

Description

Technical Field

[0001] The utility model relates to the technical field of natural hydrogen sampling, and more specifically, to a soil natural hydrogen sampling device. Background Art

[0002] Gas geochemical measurement refers to a geochemical exploration method that systematically collects gas samples from the lithosphere, hydrosphere and atmosphere, analyzes the chemical composition and other characteristics of the gas, and studies the formation, migration, aggregation and distribution characteristics of elements and compounds to achieve the purpose of mineral exploration. The research objects of gas geochemical measurement mainly include nitrogen, oxygen, water vapor, carbon dioxide, neon, argon, hydrogen, etc. At present, most of the research on natural hydrogen in China is to conduct a small amount of single-point in-situ measurement of hydrogen as a factor to monitor the natural environment. Natural hydrogen has not been measured as an energy source to obtain a two-dimensional map of hydrogen concentration. Natural hydrogen has been discovered in various parts of the world. Countries such as Australia, the United States, Brazil and France have begun underground natural hydrogen concentration measurements.

[0003] However, since hydrogen has the smallest molecular structure and strong permeability, it is easy to penetrate during the measurement process. Therefore, it is easy to be affected by external factors during the gas collection process, and it is impossible to ensure that the collected gas comes completely from the soil, resulting in errors in the subsequent accurate testing of hydrogen. In addition, the common equipment used for field measurement of natural hydrogen concentration at single points requires an instrument for measurement at each point and needs to be equipped with a professional technician to operate it, which will consume a lot of manpower and material resources. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a soil natural hydrogen sampling device to solve the problem in the prior art that the gas collection process is easily affected by external factors, thus failing to ensure that the collected gas comes completely from the soil, resulting in errors in the subsequent accurate testing of hydrogen.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a soil natural hydrogen sampling device, comprising

[0006] A gas sealing assembly, the gas sealing assembly includes an air inlet head, a conical hole sealer, a connecting pipe, an operating handle, a silicone tube, and a ball valve. The top of the air inlet head is threadedly connected to the bottom of the conical hole sealer, the middle of the air inlet head is fixedly installed with the bottom end of the silicone tube, the top of the conical hole sealer is fixedly installed with the bottom end of the connecting pipe, the middle of the operating handle is fixedly installed with the top end of the connecting pipe, the silicone tube is arranged inside the connecting pipe, and the side end of the ball valve is fixedly installed with the end of the silicone tube;

[0007] The gas collecting component includes a filter, an air extraction pump, and a storage bag. The side end of the filter is fixedly installed on the side of the ball valve, the side end of the air extraction pump is fixedly installed on the side of the filter, and the side end of the storage bag is fixedly installed on the side of the air extraction pump.

[0008] It also includes a hole-making component, which includes a steel chisel and a hammer. The diameter of the steel chisel is 25 mm and the total length is 1.1 m-1.2 m. The steel chisel is used to drill holes underground with a drilling depth of 900 mm. The hammer weighs 8 pounds.

[0009] The air intake head is composed of two hollow cylinders, and the lower cylinder of the air intake head has three air intake holes symmetrically distributed in four directions, front, back, left and right, for a total of 12 air intake holes.

[0010] Wherein, the filter uses tetrafluoroethylene as the filter material.

[0011] The silicone tube is connected to the air outlet at the upper end of the air inlet head, passes through the conical hole sealer, the connecting pipe, the inside of the operating handle in sequence, and is finally airtightly connected to the spherical valve.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In the above scheme, by setting a hole-forming component and a gas sealing component, the ball valve is closed first, then the steel chisel is pulled out, and the air inlet head is quickly screwed into the hole, and the air inlet head is tightened to achieve a sealing state with the surrounding soil. The gas enters the silicone tube through the air inlet head, and the air inlet head is connected to the ball valve through the silicone tube. When the ball valve is closed, the gas in the soil is sealed inside the silicone tube, and when the ball valve is opened, the gas enters the connected filter and vacuum pump through the ball valve, and enters the storage bag for collection, thereby achieving a fully sealed state in the gas collection process, avoiding the influence of the surrounding environment of the sampling point, ensuring that the collected gas comes completely from the soil, and providing a reliable sample for the precise testing of hydrogen.

[0014] In the above scheme, by setting up a gas sealing component and a gas collecting component, if a hydrogen meter is used directly to measure the gas concentration on-site, only the work of sampling points can be completed every day, and the overall work will be affected by various conditions in the field. However, by adopting this device, the collection of samples can be completed in a certain area in the field within one day, and the gas analysis work can be completed with one hydrogen meter within one day, realizing rapid sampling and analysis of natural hydrogen in the soil, obtaining a two-dimensional plane map of the hydrogen concentration in the area, and conducting a rapid evaluation of the underground hydrogen in the area. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the hole-forming component structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the gas sealing component of the utility model;

[0018] Figure 4 It is a schematic diagram of the structure of the gas inlet head of the gas sealing assembly of the utility model;

[0019] Figure 5 It is a schematic diagram of the structure of the gas collecting component of the utility model.

[0020] [reference numerals]

[0021] 100. Hole-forming assembly; 101. Steel chisel; 102. Hammer; 200. Gas sealing assembly; 201. Air inlet head; 202. Conical hole sealer; 203. Connecting pipe; 204. Operating handle; 205. Silicone tube; 206. Ball valve; 300. Gas collecting assembly; 301. Filter; 302. Air pump; 303. Storage bag. DETAILED DESCRIPTION

[0022] In order to make the technical problems to be solved, technical solutions and advantages of the present invention more clear, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0023] As attached Figure 1 To Attachment Figure 5 The embodiment of the utility model provides a soil natural hydrogen sampling device, comprising:

[0024] Gas sealing assembly 200, gas sealing assembly 200 includes an air inlet head 201, a conical hole sealer 202, a connecting pipe 203, an operating handle 204, a silicone tube 205, and a ball valve 206. The top of the air inlet head 201 is threadedly connected to the bottom of the conical hole sealer 202, the middle of the air inlet head 201 is fixedly installed with the bottom end of the silicone tube 205, the top of the conical hole sealer 202 is fixedly installed with the bottom end of the connecting pipe 203, the middle of the operating handle 204 is fixedly installed with the top end of the connecting pipe 203, the silicone tube 205 is arranged inside the connecting pipe 203, and the side end of the ball valve 206 is fixedly installed with the end of the silicone tube 205;

[0025] The gas collecting assembly 300 includes a filter 301, an air extraction pump 302, and a storage bag 303. The side end of the filter 301 is fixedly installed with the side of the ball valve 206, the side end of the air extraction pump 302 is fixedly installed with the side of the filter 301, and the side end of the storage bag 303 is fixedly installed with the side of the air extraction pump 302;

[0026] By setting the filter 301, the filter 301 needs to be impermeable to liquids and solids, but permeable to air, suitable for measuring gas, and can protect the measuring equipment, thereby improving the measurement accuracy. It is observed that tetrafluoroethylene is suitable as the material of the filter 301;

[0027] By setting up a vacuum pump 302, gas can be pumped into the storage bag 303 through the vacuum pump 302 to completely fill the storage bag 303. The storage bag 303 will be automatically sealed through the Luer connector, and the collection of a bag of gas samples is completed. In addition, in order to ensure the uniformity of the gas bag samples, constant current collection is adopted, and the flow rate of the vacuum pump 302 is set to 300 ml / min to ensure that each bag of gas samples is collected at equal time intervals.

[0028] The drilling assembly 100 is also included. The drilling assembly 100 includes a steel chisel 101 and a hammer 102. The diameter of the steel chisel 101 is 25 mm, and the total length is 1.1 m-1.2 m. The steel chisel 101 is used for drilling holes underground. The drilling depth is 900 mm. The hammer 102 weighs 8 pounds.

[0029] The air inlet head 201 is composed of two hollow cylinders, and the cylinder at the bottom of the air inlet head 201 has three air inlet holes symmetrically distributed in the front, back, left, and right directions, for a total of 12 air inlet holes.

[0030] By setting the air intake head 201, the air intake head 201 is composed of two hollow cylinders, and the lower cylinder has three air intake holes symmetrically distributed in the four directions of front, back, left and right, with a total of 12 air intake holes. This design can prevent the soil from blocking the air holes and affecting the air intake.

[0031] The filter 301 uses tetrafluoroethylene as the material of the filter 301 .

[0032] The silicone tube 205 is connected to the air outlet at the upper end of the air inlet head 201 , passes through the conical hole sealer 202 , the connecting tube 203 , the interior of the operating handle 204 , and is finally connected to the ball valve 206 in a sealed manner.

[0033] The working process of the utility model is as follows:

[0034] First, use the hole-making assembly 100 to make a hole, stand the steel drill 101 vertically on the ground, and use a hammer 102 to continuously apply force to the top of the steel drill 101 to form a hole with a diameter of about 25 mm and a depth of about 900 mm. Then, close the ball valve 206, pull out the steel drill 101, quickly screw the air inlet head 201 into the hole, tighten the air inlet head 201 to make it sealed with the surrounding soil, and the gas enters the silicone tube 205 through the air inlet head 201. The air inlet head 201 is connected to the ball valve 206 through the silicone tube 205. When the ball valve 206 is closed, the gas in the soil is sealed in the silicone tube 205. When the ball valve 206 is opened, the gas enters the connected filter 301 and the vacuum pump 302 through the ball valve 206, and enters the storage bag 303 for collection.

[0035] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0036] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0037] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A soil natural hydrogen sampling device, characterized in that: include A gas sealing assembly (200), the gas sealing assembly (200) comprising an air inlet head (201), a conical hole sealer (202), a connecting pipe (203), an operating handle (204), a silicone tube (205), and a ball valve (206), the top of the air inlet head (201) being threadedly connected to the bottom of the conical hole sealer (202), the middle of the air inlet head (201) being fixedly mounted to the bottom end of the silicone tube (205), the top of the conical hole sealer (202) being fixedly mounted to the bottom end of the connecting pipe (203), the middle of the operating handle (204) being fixedly mounted to the top end of the connecting pipe (203), the silicone tube (205) being arranged inside the connecting pipe (203), and the side end of the ball valve (206) being fixedly mounted to the end of the silicone tube (205); The gas collecting component (300) comprises a filter (301), an air extraction pump (302), and a storage bag (303), wherein the side end of the filter (301) is fixedly mounted on the side of the ball valve (206), the side end of the air extraction pump (302) is fixedly mounted on the side of the filter (301), and the side end of the storage bag (303) is fixedly mounted on the side of the air extraction pump (302).

2. A soil natural hydrogen sampling device according to claim 1, characterized in that: It also includes a hole-making component (100), which includes a steel chisel (101) and a hammer (102). The steel chisel (101) has a diameter of 25 mm and a total length of 1.1 m-1.2 m. The steel chisel (101) is used to drill a hole underground with a drilling depth of 900 mm. The hammer (102) weighs 8 pounds.

3. A soil natural hydrogen sampling device according to claim 1, characterized in that: The air intake head (201) is composed of two hollow cylinders, and the lower cylinder of the air intake head (201) has three air intake holes symmetrically distributed in four directions, front, back, left, and right, for a total of 12 air intake holes.

4. A soil natural hydrogen sampling device according to claim 1, characterized in that: The filter (301) uses tetrafluoroethylene as the material of the filter (301).

5. A soil natural hydrogen sampling device according to claim 1, characterized in that: The silicone tube (205) is connected to the air outlet at the upper end of the air inlet head (201), passes through the conical hole sealer (202), the connecting pipe (203), the inside of the operating handle (204), and finally is tightly connected to the ball valve (206).

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