Radon gas collection device

Abstract

The utility model relates to a radon gas collection device, comprising a gas collecting pipe and a rubber hose detachably connected thereto, and also comprising a core rod which can be inserted into the gas collecting pipe. A threaded drill bit is provided at the front end of the gas collecting pipe, and the core rod can be inserted into the gas collecting pipe and threadedly connected with the threaded drill bit at the front end. The device adopts a gas collecting pipe with a threaded drill bit at the front end, and the core rod can be inserted into the gas collecting pipe and threadedly connected with the threaded drill bit at the front end. The core rod is inserted into the gas collecting pipe and threadedly connected with the threaded drill bit at the front end, and an electric drill is connected to the rear end of the core rod to drill the gas collecting pipe into the ground surface. The drilling method is adopted, which can prevent the gas collecting pipe from being deformed by force compared with the current common method of knocking into the ground. During the drilling process, the core rod is close to the inner wall of the gas collecting pipe, which effectively avoids soil entering the gas collecting pipe through the gas collecting hole to cause blockage, thereby greatly improving the collection efficiency and collection accuracy of radon gas.

Description

Technical Field

[0001] The utility model relates to the technical field of radon gas collection, in particular to a radon gas collection device. Background Art

[0002] Radon is a radioactive inert gas that is ubiquitous in the earth's crust and is an intermediate product of the uranium-based radioactive decay chain. Radon is highly soluble in water, and its behavior and concentration in groundwater are strongly affected by geological conditions. Soil radon concentration mainly depends on physical, chemical and geological factors, including the geochemical migration rate of radon precursors, porosity, permeability, seasonal fluctuations in temperature and atmospheric pressure, etc. Its diffusion rate in soil is extremely limited, which helps radon migrate from surface soil to deeper depths. Although radon has a short half-life, its measurement method can identify fault structures buried thousands of meters underground. Studies have found that the nature and distribution range of faults have a great influence on the cross-fault distribution of radon in soil. In relatively intact surrounding rocks, fractures are developed in the fault zone and its influence zone, and radon gas is easily enriched and stored above and around it. Therefore, radon gas is an important indicator of the geochemical characteristics of the fault zone, and radon gas detection is an effective means to identify the location of hidden faults.

[0003] Since the radon gas collection device should be sealed near the surface to prevent the atmosphere from penetrating into the hole, the collection device needs to meet two requirements: on the one hand, the collector must have high sealing performance; on the other hand, the collection efficiency needs to be improved.

[0004] At present, the existing radon gas collection devices have the following shortcomings:

[0005] 1. The gas collecting pipe is driven into the ground by hammering. Continuous impact may easily cause the gas collecting pipe to deform or be directly damaged. In addition, the depth is difficult to control and the collection efficiency is low.

[0006] 2. When the gas collecting pipe is driven into the ground, soil easily enters the collection hole and causes the gas collecting pipe to be blocked, resulting in the failure of radon gas collection;

[0007] 3. The airtightness of the collector is not high, and the mixing of air leads to inaccurate collected data. Utility Model Content

[0008] In order to overcome the deficiencies in the background technology, the utility model provides a radon gas collection device.

[0009] The technical solution adopted by the utility model to solve its technical problems is: a radon gas collection device, including a gas collecting pipe and a rubber hose detachably connected thereto, and also including a core rod that can be inserted into the gas collecting pipe, a threaded drill bit is provided at the front end of the gas collecting pipe, the core rod can be inserted into the gas collecting pipe and threadedly connected with the threaded drill bit at the front end, the outer wall of the gas collecting pipe is provided with an external thread and is threadedly connected with a sealing plate; the length of the core rod that can be connected to an electric drill is greater than the length of the gas collecting pipe, and a gas collecting hole is opened at the front of the gas collecting pipe.

[0010] Furthermore, the rubber hose is connected to a filter, and a filter screen and a drying box are arranged inside the filter. The filter screen can filter fine dust, and the drying box can absorb water vapor, thereby greatly improving the accuracy of radon gas collection.

[0011] Furthermore, the filter is provided with two layers of filter screens.

[0012] Furthermore, the mesh sizes of the two layers of filters are 5 mesh and 10 mesh respectively.

[0013] Furthermore, the gas collecting pipe is a stainless steel pipe with a length of 600 mm and an inner diameter of 15 mm. The stainless steel material is corrosion-resistant and has a long service life.

[0014] Furthermore, the core rod is a stainless steel round bar with a length of 650 mm and a diameter of 14 mm.

[0015] Furthermore, there are five gas collecting holes, which are evenly arranged in a staggered manner at the front of the gas collecting pipe, with a hole diameter of 5 mm and a spacing of 5 mm, which can maintain a stable radon gas collection effect.

[0016] Furthermore, the sealing plate is circular, with a diameter of 150 mm and a thickness of 10 mm, and can maintain good sealing during the collection process.

[0017] Furthermore, an electric drill connector is provided at the rear end of the core rod for matching and connecting with an electric drill for drilling.

[0018] The utility model adopts a core rod inserted into the gas collecting pipe and threadedly connected with the threaded drill bit at the front end, the rear end of the core rod is connected to the electric drill, at the preset collection point, the gas collecting pipe is drilled into the ground to a preset depth, and then the core rod is taken out, which effectively prevents mud from entering the gas collecting pipe through the gas collecting hole and causing blockage, the threaded sealing plate is on the gas collecting pipe and close to the ground, the rear end of the gas collecting pipe is connected to a rubber hose, and then connected to the filter and then to the radon gas analyzer, and radon gas detection can be carried out.

[0019] The beneficial effects of the utility model are as follows: the device adopts a threaded drill bit at the front end of the gas collecting pipe, the core rod can be inserted into the gas collecting pipe and threadedly connected with the threaded drill bit at the front end, the core rod is inserted into the gas collecting pipe and threadedly connected with the threaded drill bit at the front end, the rear end of the core rod is connected to an electric drill, and the gas collecting pipe is drilled into the ground by a rotating method, which is compared with the current common method of knocking into the ground. The gas collecting pipe can be prevented from being deformed by force. During the drilling process, the core rod is close to the inner wall of the gas collecting pipe, which effectively prevents soil from entering the gas collecting pipe through the gas collecting holes and causing blockage, thereby greatly improving the collection efficiency and accuracy of radon gas.

[0020] The gas collecting pipe of the device is threadedly connected with a sealing plate to prevent air from mixing in, the collector has high sealing performance, and the collected data has high accuracy.

[0021] This collection device can carry out radon gas measurement work under various complex geological conditions. On the one hand, it can effectively ensure that the radon gas collection device should be sealed near the surface to prevent the atmosphere from penetrating into the hole; on the other hand, the drilling depth can be accurately controlled through a portable electric drill, and the collection efficiency can be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 It is a structural schematic diagram of the gas collecting pipe and the core rod of the utility model;

[0024] Figure 3 It is a structural schematic diagram of the sealing plate of the utility model;

[0025] Figure 4 yes Figure 3 A top view of

[0026] Figure 5 It is a structural schematic diagram of the filter of the utility model;

[0027] Figure 6 It is a drilling schematic diagram of an embodiment of the utility model;

[0028] Figure 7 It is a schematic diagram of installing a sealing plate in an embodiment of the utility model.

[0029] Parts number in the picture:

[0030] 1-gas collecting pipe; 11-gas collecting hole; 2-core rod; 3-thread drill bit; 4-sealing plate; 5-rubber hose; 6-filter; 61-filter screen; 62-drying box. DETAILED DESCRIPTION

[0031] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0032] like Figures 1 to 7As shown, a radon gas collection device includes a gas collecting pipe 1 and a rubber hose 5 detachably connected thereto, and also includes a core rod 2 that can be inserted into the gas collecting pipe 1. A threaded drill bit 3 is provided at the front end of the gas collecting pipe 1. The core rod 2 can be inserted into the gas collecting pipe 1 and threadedly connected to the threaded drill bit 3 at the front end. The outer wall of the gas collecting pipe 1 is provided with an external thread and is threadedly connected to a sealing plate 4. The length of the core rod 2 that can be connected to an electric drill is greater than the length of the gas collecting pipe 1, and a gas collecting hole 11 is opened at the front of the gas collecting pipe 1.

[0033] The rubber hose 5 is connected to a filter 6, in which a filter screen 61 and a drying box 62 are arranged. The filter screen 61 can filter fine dust, and the drying box 62 can absorb water vapor, thereby greatly improving the accuracy of radon gas collection.

[0034] The filter 6 includes a two-layer filter screen 61 .

[0035] The mesh sizes of the two layers of filter screens 61 are 5 mesh and 10 mesh respectively.

[0036] The gas collecting pipe 1 is a stainless steel pipe with a length of 600 mm and an inner diameter of 15 mm, which is corrosion-resistant and has a long service life.

[0037] The core rod 2 is a stainless steel round bar with a length of 650 mm and a diameter of 14 mm.

[0038] There are five gas collecting holes 11, which are evenly arranged in a staggered manner at the front of the gas collecting pipe 1, with a hole diameter of 5 mm and a spacing of 5 mm, which can maintain a stable radon gas collection effect.

[0039] The sealing plate 4 is circular, with a diameter of 150 mm and a thickness of 10 mm, and can maintain good sealing during the collection process.

[0040] The rear end of the core rod 2 is provided with an electric drill connector for mounting an electric drill for drilling.

[0041] Implementation process: Figure 6 As shown, the core rod 2 is inserted into the gas collecting pipe 1 and threadedly connected with the threaded drill bit 3 at the front end to complete the assembly. The electric drill connector at the rear end of the core rod 2 is exposed from the gas collecting pipe 1 to connect and install the electric drill. At the preset collection point, the gas collecting pipe 1 is drilled to a predetermined depth under the ground by the electric drill. Then the electric drill and the core rod 2 are taken out, and the gas collecting pipe 1 is retained underground. During the drilling process, the core rod 2 prevents soil from entering the gas collecting pipe 1 through the gas collecting hole 11 and causing blockage. Figure 7 As shown, the sealing plate 4 is then threadedly connected to the gas collecting pipe 1 and tightened until it is close to the ground, sealing the gap between the borehole and the gas collecting pipe 1 to prevent air from mixing in, thereby ensuring that the gas collected in the gas collecting pipe 1 comes from the underground target layer. Figure 1 As shown, the rubber hose 5 is connected to the rear end of the gas collecting pipe 1, and the rubber hose 5 is then connected to the filter 6 and then connected to the radon gas analyzer, so that radon gas detection can be performed.

Claims

1. A radon gas collection device, comprising a gas collecting pipe (1) and a rubber hose (5) detachably connected thereto, characterized in that: It also includes a core rod (2) that can be inserted into the gas collecting pipe (1), the front end of the gas collecting pipe (1) is provided with a threaded drill bit (3), the core rod (2) can be inserted into the gas collecting pipe (1) and threadedly connected with the threaded drill bit (3) at the front end, the outer wall of the gas collecting pipe (1) is provided with an external thread and is threadedly connected with a sealing plate (4); the length of the core rod (2) that can be connected to an electric drill is greater than the length of the gas collecting pipe (1), and a gas collecting hole (11) is opened at the front of the gas collecting pipe (1).

2. A radon gas collection device according to claim 1, characterized in that: The rubber hose (5) is connected to a filter (6), and a filter screen (61) and a drying box (62) are arranged inside the filter (6).

3. A radon gas collection device according to claim 2, characterized in that: The filter (6) is provided with a two-layer filter screen (61).

4. A radon gas collection device according to claim 3, characterized in that: The mesh sizes of the two layers of filter screens (61) are 5 mesh and 10 mesh respectively.

5. A radon gas collection device according to claim 1, characterized in that: The gas collecting pipe (1) is a stainless steel pipe with a length of 600 mm and an inner diameter of 15 mm.

6. A radon gas collection device according to claim 1, characterized in that: The core rod (2) is a stainless steel round bar with a length of 650 mm and a diameter of 14 mm.

7. A radon gas collection device according to claim 1, characterized in that: There are five gas collecting holes (11) which are evenly arranged in a staggered manner at the front of the gas collecting pipe (1), with a hole diameter of 5 mm and a spacing of 5 mm.

8. A radon gas collection device according to claim 1, characterized in that: The sealing plate (4) is circular, with a diameter of 150 mm and a thickness of 10 mm.

9. A radon gas collection device according to any one of claims 1 to 8, characterized in that: An electric drill connector is provided at the rear end of the core rod (2).

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