A device for collection and release of rare gas samples from soil

Abstract

The present application belongs to the technical field of rare gas sample content and isotope composition determination in soil, and particularly relates to a device for rare gas sample collection and release in soil. The present application comprises a collection device and a release device. The collection device comprises a hydraulic clamp head frame, a first fixed rod, a metal clamp head, a first cylindrical clamp head, a second cylindrical clamp head, a first power rod, and a hydraulic receiving rod. The release device comprises an upper flange of an observation window, an observation window, a jackscrew, a lower flange of the observation window, an upper cover of a gas release device, a copper pipe fixing clamp, a movable handle, a connecting rod, a second power rod, a lower cover of the gas release device, a first copper pipe extrusion pad, a first vacuum pipe, a second copper pipe extrusion pad, a second vacuum pipe, and a second fixed rod. The present application can solve the problems of complex copper pipe sealing operation and difficulty in field application, and can realize the connection with a gas purification system for use after the sealing of the copper pipe, thereby improving the test precision and test efficiency.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of rare gas sample content and isotope composition determination in soil, and particularly relates to a device for rare gas sample collection and release in soil. BACKGROUND

[0002] Rare gas analysis is one of important means of geoscience research, and has important research significance in ore-forming fluid source and crust-mantle interaction process.

[0003] The content of rare gas in soil is low and is easily interfered by external environment, so reducing sample pollution and improving sample purity in the process of sample sampling, transportation and release analysis is the key to accurately determine the content and isotope composition of rare gas.

[0004] Common rare gas sampling devices mainly include stainless steel bottles, copper pipes, glass bottles, gas sampling bags and syringes. The stainless steel has the advantages of high temperature resistance, high pressure resistance, strong corrosion resistance, non-flammability, non-explosiveness, stability in the process of gas sample collection and transportation, etc., and the disadvantages of large size, heavy weight and difficult to carry. The glass bottle is simple to operate and easy to carry, and the permeability of the glass bottle for storing rare gas varies with the structure of the glass, but the glass material is not suitable for long-distance transportation and long-term storage. The biggest advantage of the gas sampling bag is convenience, speed and portability, but due to the material problem, the gas sampling bag has high permeability, and the rare gas is easy to penetrate and be contaminated. In addition, the gas sampling bag contains organic materials such as polyethylene and adhesive, which can release benzene, ketone, ether and ester, etc., causing difficulty in later purification and analysis of rare gas. The syringe collection method is simple and convenient to operate, but the gas preservation time in the syringe is closely related to the sample properties, concentration and airtightness of the syringe.

[0005] The copper pipe is a widely used sampling device, which has good sealing performance, high collection rate, easy storage and transportation. However, the field sealing device of the copper pipe is complex and not easy to carry, so a device for rare gas sample collection and release in soil suitable for field application is needed to accurately determine the content and isotope composition of rare gas in soil. SUMMARY

[0006] The technical problem solved by the present application is to provide a device for rare gas sample collection and release in soil, which solves the problems of complex sealing operation of copper pipe and difficulty in field application, and realizes connection with a gas purification system for use after the copper pipe is sealed, thereby improving test precision and test efficiency.

[0007] The technical scheme adopted by the present application is as follows:

[0008] A rare gas sample collection and release device for soil, comprising a collection device and a release device, the collection device comprising a hydraulic jaw frame, a first fixed rod, a metal jaw, a first cylindrical jaw, a second cylindrical jaw, a first power rod, a hydraulic receiving rod, the hydraulic jaw frame being in U-shaped structure, one end of the inner wall of the hydraulic jaw frame being fixedly provided with the first fixed rod, the first fixed rod being fixedly provided with the metal jaw; the other end of the inner wall of the hydraulic jaw frame is provided with a through hole, the hydraulic receiving rod passes through the through hole and is fixed on the hydraulic frame, one end of the hydraulic receiving rod is connected with a hydraulic device, the other end of the hydraulic receiving rod is connected with the first power rod, the first power rod is fixedly provided with the metal jaw;

[0009] The release device comprises an observation window upper flange, an observation window, a top screw, an observation window lower flange, a gas release device upper cover, a copper pipe fixing clamp, a movable handle, a connecting rod, a second power rod, a gas release device lower cover, a first copper pipe extrusion pad, a first vacuum pipe, a second copper pipe extrusion pad, a second vacuum pipe, a second fixed rod, a cavity is formed in the center of the gas release device lower cover, the second fixed rod is fixedly installed on the inner wall of the cavity, and the second copper pipe extrusion pad is fixedly installed on the front end of the second fixed rod; a through hole is formed in the opposite inner wall, the connecting rod penetrates through the through hole and is fixed in the inner wall of the gas release device lower cover, and the second power rod penetrates through the connecting rod; the movable handle is fixedly installed on one end of the second power rod, and the first copper pipe extrusion pad is fixedly installed on the other end of the second power rod; the first vacuum pipe and the second vacuum pipe are respectively installed on the other two inner walls of the cavity; a plurality of bolt holes are formed in the bottom of the cavity, the copper pipe fixing clamp is fixed in the cavity through the internal hexagonal bolt, a plurality of bolt holes are formed in the upper surface of the cavity, the release device upper cover is fixedly connected with the gas release device lower cover through the internal hexagonal bolt, the observation window lower flange is arranged on the upper end surface of the gas release device upper cover, the observation window upper flange is fixedly connected with the observation window lower flange through the internal hexagonal bolt, and the observation window is arranged between the observation window upper flange and the observation window lower flange.

[0010] The front end of the metal jaw is provided with a cylindrical groove, the first cylindrical jaw and the second cylindrical jaw are fixed in the cylindrical groove, and the positions of the first cylindrical jaw and the second cylindrical jaw are opposite.

[0011] The copper pipe is placed between the first cylindrical jaw and the second cylindrical jaw, the second cylindrical jaw is extruded to press the copper pipe through the hydraulic device, and the sealing of the copper pipe is completed.

[0012] The connection between the second power rod and the connecting rod is sealed by polytetrafluoroethylene material.

[0013] The positions of the first copper pipe extrusion pad and the second copper pipe extrusion pad are opposite, and the first copper pipe extrusion pad is pushed by the movable handle.

[0014] The first copper pipe extrusion pad and the second copper pipe extrusion pad have rhombic patterns on the inner walls, which prevent the sealed end of the copper pipe from rotating.

[0015] The first vacuum pipe is connected with a gas purification system, and the second vacuum pipe is connected with a vacuum system.

[0016] The copper pipe fixing clamp has a rhombic groove in the center, which is used for fixing the copper pipe, and the inner wall of the rhombic groove has a stripe, which prevents the copper pipe from rotating.

[0017] The upper surface of the cavity is also provided with a rectangular groove, and a rectangular gasket is arranged in the rectangular groove and used for sealing the upper cover of the gas releasing device and the lower cover of the gas releasing device.

[0018] The first circular gasket is arranged between the observation window and the upper flange of the observation window, and the second circular gasket is arranged between the observation window and the lower flange of the observation window.

[0019] Compared with the prior art, the device has the following beneficial effects:

[0020] (1) The device for collecting and releasing rare gas samples in soil is provided, which comprises a hydraulic clamp head, a copper pipe, an observation window, a copper pipe fixing clamp and upper and lower covers of a releasing device, and realizes the collection and detection analysis of rare gas samples.

[0021] (2) The device for collecting and releasing rare gas samples in soil is provided, which adopts a copper pipe, can effectively reduce the gas adsorption inner wall, and is convenient for field gas collection, carrying and transportation.

[0022] (3) The device for collecting and releasing rare gas samples in soil is provided, which adopts a hydraulic tungsten steel clamp head, can effectively realize the sealing and clamping of the copper pipe.

[0023] (4) The device for collecting and releasing rare gas samples in soil is provided, which adopts a rare gas sample releasing device, has small size, good sealing performance and can quickly obtain high vacuum.

[0024] (5) The device for collecting and releasing rare gas samples in soil is provided, which adopts a copper pipe fixing clamp with a rhombic groove, can effectively fix the copper pipe, and the inner wall of the rhombic groove has a stripe, which prevents the copper pipe from rotating due to uneven force.

[0025] (6) The device for collecting and releasing rare gas samples in soil is provided, which adopts an observation window, and can realize real-time observation of the state of the sealed end of the copper pipe.

[0026] (7) The present application provides a device for collecting and releasing rare gas samples in soil, which can effectively extrude the sealing section of the copper pipe by using a copper pipe extrusion pad, facilitate the release of the rare gas samples in the copper pipe, and prevent the rotation of the sealing end of the copper pipe by the rhombic pattern on the copper pipe extrusion pad;

[0027] (8) The present application provides a device for collecting and releasing rare gas samples in soil, which can facilitate the extrusion of the copper pipe by using a movable handle to control the copper pipe extrusion pad;

[0028] (9) The present application provides a device for collecting and releasing rare gas samples in soil, which can facilitate the detection and analysis of the rare gas samples by using a first vacuum pipeline to connect the gas release device and the gas purification system;

[0029] (10) The present application provides a device for collecting and releasing rare gas samples in soil, which can facilitate the balance between the high vacuum state and the atmospheric pressure state of the internal cavity of the gas release device by using a second vacuum pipeline to connect the gas release device and the vacuum system;

[0030] (11) The present application provides a device for collecting and releasing rare gas samples in soil, which facilitates the fixation and disassembly of the device by using an internal hexagonal bolt;

[0031] (12) The present application provides a device for collecting and releasing rare gas samples in soil, which has good sealing performance by using a polytetrafluoroethylene gasket;

[0032] (13) The present application provides a device for collecting and releasing rare gas samples in soil, which facilitates the opening of the upper cover of the release device and the replacement of the copper pipe by using a top screw design. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 Structure schematic diagram of the rare gas sample collection device of the present application;

[0034] Figure 2 Structure schematic diagram of the rare gas sample release device of the present application;

[0035] In the figure: 1 is copper pipe, 2 is hydraulic clamp head frame, 3 is first fixed rod, 4 is metal clamp head, 5 is first cylindrical clamp head, 6 is second cylindrical clamp head, 7 is first power rod, 8 is hydraulic receiving rod, 13 is upper flange of observation window, 14 is first circular gasket, 15 is observation window, 17 is second circular gasket, 19 is jackscrew, 21 is lower flange of observation window, 23 is upper cover of gas releasing device, 26 is rectangular gasket, 27 is copper pipe fixing clamp, 32 is rhombic groove, 33 is fixed pad, 34 is movable handle, 35 is connecting rod, 36 is second power rod, 37 is lower cover of gas releasing device, 38 is first copper pipe extrusion pad, 39 is first vacuum pipe, 40 is second copper pipe extrusion pad, 41 is rectangular recess, 42 is second vacuum pipe, 43 is second fixed rod. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0037] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] As Figure 1 shown, the present application provides a rare gas sample collection and releasing device for soil, wherein the collection device comprises a hydraulic clamp head frame 2, a first fixed rod 3, a metal clamp head 4, a first cylindrical clamp head 5, a second cylindrical clamp head 6, a first power rod 7, a hydraulic receiving rod 8,

[0040] The hydraulic clamp head frame 2 is a U-shaped structure, and a first fixing rod 3 is fixedly installed at one end of its inner wall, and a metal clamp head 4 is fixedly installed on the first fixing rod 3; a through hole is opened at the other end of the inner wall of the hydraulic clamp head frame 2, and a hydraulic receiving rod 8 passes through the through hole and is fixed to the hydraulic frame 2, one end of the hydraulic receiving rod 8 is connected to the hydraulic device, and the other end is connected to the first power rod 7, and a metal clamp head 4 is fixedly installed on the first power rod 7; a cylindrical groove is opened at the front end of the metal clamp head 4, and the first cylindrical clamp head 5 and the second cylindrical clamp head 6 are fixed in the cylindrical groove, and the positions of the first cylindrical clamp head 5 and the second cylindrical clamp head 6 are opposite; the hydraulic device pushes the second cylindrical clamp head 6 through the first power rod 7;

[0041] The copper tube 1 is placed between the first cylindrical clamp head 5 and the second cylindrical clamp head 6, and the second cylindrical clamp head 6 is pushed by the hydraulic device to squeeze the copper tube 1 to complete the sealing of the copper tube 1;

[0042] The hydraulic clamp head frame 2 is made of 316 stainless steel.

[0043] The first fixing rod 3, the metal clamp head 4, the first power rod 7, and the hydraulic connecting rod 8 are made of 316 stainless steel.

[0044] The first cylindrical pliers head 5 and the second cylindrical pliers head 6 are made of tungsten steel.

[0045] like Figure 2 As shown, the present invention provides a device for collecting and releasing rare gas samples in soil, wherein the release device includes an observation window upper flange 13, a first circular gasket 14, an observation window 15, a second circular gasket 17, a top screw 19, an observation window lower flange 21, a gas release device upper cover 23, a rectangular gasket 26, a copper tube fixing clamp 27, a diamond groove 32, a fixing pad 33, a movable handle 34, a connecting rod 35, a second power rod 36, a gas release device lower cover 37, a first copper tube squeeze pad 38, a first vacuum line 39, a second copper tube squeeze pad 40, a rectangular groove 41, a second vacuum line 42, and a second fixing rod 43.

[0046] The center of the lower cover 37 of the gas releasing device is provided with a cavity, and the inner wall of the cavity is fixedly provided with a second fixed rod 43. The front end of the second fixed rod 43 is fixedly provided with a second copper pipe extrusion pad 40. The opposite inner wall of the cavity is provided with a through hole, and the connecting rod 35 penetrates through the through hole and is fixed in the inner wall of the lower cover 37 of the gas releasing device. The second power rod 36 penetrates through the connecting rod 35. The connection between the second power rod 36 and the connecting rod 35 is sealed by polytetrafluoroethylene material. One end of the second power rod 36 is fixedly provided with a movable handle 34, and the other end is fixedly provided with a first copper pipe extrusion pad 38. The first copper pipe extrusion pad 38 is opposite to the second copper pipe extrusion pad 40 in position, and the first copper pipe extrusion pad 38 can be pushed through the movable handle 34. The inner wall of the first copper pipe extrusion pad 38 and the second copper pipe extrusion pad 40 is provided with a diamond pattern, which can effectively prevent the rotating of the sealed end of the copper pipe. The material is 316 stainless steel.

[0047] The other two inner walls of the cavity are respectively provided with a first vacuum pipe 39 and a second vacuum pipe 42. The first vacuum pipe 39 is connected with a gas purification system, and the second vacuum pipe 42 is connected with a vacuum system.

[0048] The bottom of the cavity is provided with a plurality of bolt holes, and the copper pipe fixing clamp 27 is fixed in the cavity by means of an internal hexagonal bolt. The center of the copper pipe fixing clamp 27 is provided with a diamond-shaped groove 32 for fixing the copper pipe. The inner wall of the diamond-shaped groove 32 is provided with a stripe for preventing the copper pipe from rotating. The copper pipe fixing clamp 27 is provided with a fixing pad 33, and the fixing pad 33 is provided with a bolt hole matched with the internal hexagonal bolt.

[0049] The upper surface of the cavity is provided with a plurality of bolt holes, and the upper cover 23 of the releasing device is fixedly connected with the lower cover 37 of the gas releasing device by means of an internal hexagonal bolt. The upper surface of the cavity is also provided with a rectangular cavity 41, and a rectangular gasket 26 is placed in the rectangular cavity 41 for sealing the upper cover 23 of the gas releasing device and the lower cover 37 of the gas releasing device. The material is polytetrafluoroethylene.

[0050] The upper end surface of the upper cover 23 of the gas releasing device is provided with an observation window lower flange 21. The observation window upper flange 13 is fixedly connected with the observation window lower flange 21 by means of an internal hexagonal bolt. The observation window upper flange 13 and the observation window lower flange 21 are provided with an observation window 15. The observation window 15 and the observation window upper flange 13 are provided with a first circular gasket 14. The observation window 15 and the observation window lower flange 21 are provided with a second circular gasket 17.

[0051] The observation window 15 is made of high borosilicate material. The materials of the first circular gasket 14 and the second circular gasket 17 are polytetrafluoroethylene.

[0052] The upper end surface of the upper cover 23 of the gas releasing device is provided with a jackscrew 19, and the jackscrew 19 is used to open the upper cover 23 of the releasing device.

[0053] The present invention provides a method for collecting and releasing rare gas samples, which specifically comprises the following steps:

[0054] Step 1: Seal the copper tube filled with rare gas

[0055] Place one end of the copper tube 1 filled with rare gas in the jaws of the hydraulic clamp. The hydraulic device is connected to the hydraulic receiving rod 8, and the device is pushed. The first power rod 7 squeezes the second cylindrical clamp head 6 under the hydraulic push. The second cylindrical clamp head 6 and the first cylindrical clamp head 5 squeeze the copper tube 1, squeezing one end of the copper tube into a straight line; operate the hydraulic device, the first power rod 7 returns to its original position, take out the copper tube 1, and place the other end of the copper tube 1 into the jaws of the hydraulic clamp. The sealing process is the same as that of the copper tube, that is, the copper tube 1 filled with rare gas sample is sealed.

[0056] Step 2: Release of rare gas in copper tube

[0057] Open the hexagon socket bolt between the upper cover 23 of the gas release device and the lower cover 37 of the gas release device, slowly turn the top screw 19, open the upper cover 23 of the gas release device, open the upper cover of the copper tube fixing clamp 27, and place the sealed copper tube 1 in the diamond groove 32 of the copper tube fixing clamp 27. The sealing mouth of the copper tube 1 is vertically stuck between the first copper tube squeezing pad 38 and the second copper tube squeezing pad 40. The squeezing pad has diamond patterns to prevent the copper tube 1 from rotating. Close the upper cover of the copper tube fixing clamp 27, close the upper cover 23 of the gas release device, tighten the hexagon socket bolt between the upper cover 23 of the release device and the lower cover 37 of the release device to complete the sealing of the release device.

[0058] The gas release device is evacuated to 10 by the vacuum system connected to the second vacuum line 42. -3 Pa, slowly turn the movable handle 34, the movable handle 34 pushes the second power rod 36, the second power rod 36 continues to push the first copper tube squeezing pad 38, the sealing state of the sealing mouth of the copper tube 1 can be observed in real time through the observation window 15, the sealing mouth of the copper tube 1 is deformed under the squeezing of the first copper tube squeezing pad 38 and the second copper tube squeezing pad 40, the rare gas in the copper tube 1 freely diffuses into the vacuum cavity of the gas release device, and the rare gas sample is purified by the gas purification system connected to the first vacuum pipeline 39 and then enters the mass spectrometry analysis.

[0059] Step 3, copper pipe replacement

[0060] After the copper tube 1 is analyzed, the air is put into the gas releasing device through the vacuum system connected with the second vacuum pipeline 42, until the air pressure in the inner and outer cavities of the device is balanced; the upper cover 23 of the gas releasing device is removed, the movable handle 34 is rotated, the first copper tube pressing pad 38 and the second copper tube pressing pad 40 no longer press the copper tube 1, the upper cover of the copper tube fixing clamp 27 is opened, the analyzed copper tube 1 is taken out, another sealed copper tube is put in, the upper cover of the copper tube fixing clamp 27 is covered, the movable handle 34 is slowly pushed, the sealed end of the copper tube is vertically clamped between the first copper tube pressing pad 38 and the second copper tube pressing pad 40, the upper cover 23 of the gas releasing device is covered, the jackscrew 19 is removed, and the replacement of the copper tube is completed.

[0061] It will be obvious to a person skilled in the art that, without departing from the spirit or essential characteristics of the application, the present application can be implemented in other specific forms. The present examples are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the description given above, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the scope of the claims.

[0062] Furthermore, it should be understood that, although the present specification is described in terms of embodiments, not every implementation embodies only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by a person skilled in the art.

Claims

1. A device for collecting and releasing rare gas samples in soil, characterized in that: The invention comprises a collecting device and a releasing device, wherein the collecting device comprises a hydraulic clamp head frame (2), a first fixing rod (3), a metal clamp head (4), a first cylindrical clamp head (5), a second cylindrical clamp head (6), a first power rod (7), and a hydraulic receiving rod (8); the hydraulic clamp head frame (2) is a U-shaped structure, one end of the inner wall of which is fixedly mounted with the first fixing rod (3), and the metal clamp head (4) is fixedly mounted on the first fixing rod (3); the other end of the inner wall of the hydraulic clamp head frame (2) is provided with a through hole, the hydraulic receiving rod (8) passes through the through hole and is fixed on the hydraulic clamp head frame (2), one end of the hydraulic receiving rod (8) is connected to the hydraulic device, and the other end is connected to the first power rod (7), and the metal clamp head (4) is fixedly mounted on the first power rod (7); The release device comprises an observation window upper flange (13), an observation window (15), a top screw (19), an observation window lower flange (21), a gas release device upper cover (23), a copper tube fixing clamp (27), a movable handle (34), a connecting rod (35), a second power rod (36), a gas release device lower cover (37), a first copper tube extrusion pad (38), a first vacuum pipeline (39), a second copper tube extrusion pad (40), a second vacuum pipeline (42), and a second fixing rod (43). A cavity is provided at the center of the gas release device lower cover (37), a second fixing rod (43) is fixedly mounted on the inner wall of the cavity, and a second copper tube extrusion pad (40) is fixedly mounted on the front end of the second fixing rod (43); a through hole is provided on the opposite inner wall, the connecting rod (35) penetrates the through hole and is fixed in the inner wall of the gas release device lower cover (37), and the second power rod (36) ) passes through the connecting rod (35); a movable handle (34) is fixedly installed on one end of the second power rod (36), and a first copper tube extrusion pad (38) is fixedly installed on the other end; a first vacuum pipeline (39) and a second vacuum pipeline (42) are respectively installed on the inner walls of the other two sides of the cavity; a plurality of bolt holes are opened at the bottom of the cavity, and the copper tube fixing clamp (27) is fixed in the cavity by hexagon socket bolts; a plurality of bolt holes are opened on the upper surface of the cavity, and the gas release device upper cover (23) is fixedly connected to the gas release device lower cover (37) by hexagon socket bolts; an observation window lower flange (21) is provided on the upper end surface of the gas release device upper cover (23), and the observation window upper flange (13) is fixedly connected to the observation window lower flange (21) by hexagon socket bolts, and an observation window (15) is provided between the observation window upper flange (13) and the observation window lower flange (21); The front end of the metal pliers head (4) is provided with a cylindrical groove, and the first cylindrical pliers head (5) and the second cylindrical pliers head (6) are fixed in the cylindrical groove, and the first cylindrical pliers head (5) and the second cylindrical pliers head (6) are positioned relative to each other; The copper tube (1) is placed between the first cylindrical clamp head (5) and the second cylindrical clamp head (6), and the second cylindrical clamp head (6) is pushed by a hydraulic device to squeeze the copper tube (1), thereby completing the sealing of the copper tube (1).

2. The device for collecting and releasing rare gas samples in soil according to claim 1, characterized in that: The connection between the second power rod (36) and the connecting rod (35) is sealed by polytetrafluoroethylene material.

3. The device for collecting and releasing rare gas samples in soil according to claim 2, characterized in that: The first copper tube squeezing pad (38) and the second copper tube squeezing pad (40) are positioned opposite to each other, and the first copper tube squeezing pad (38) is pushed by the movable handle (34).

4. The device for collecting and releasing rare gas samples in soil according to claim 3, characterized in that: The inner walls of the first copper tube extrusion pad (38) and the second copper tube extrusion pad (40) are provided with diamond patterns to prevent the sealed ends of the copper tubes from rotating.

5. The device for collecting and releasing rare gas samples in soil according to claim 1, characterized in that: The first vacuum pipeline (39) is connected to a gas purification system, and the second vacuum pipeline (42) is connected to a vacuum system.

6. The device for collecting and releasing rare gas samples in soil according to claim 1, characterized in that: The copper tube fixing clamp (27) has a diamond groove (32) at its center for fixing the copper tube. The inner wall of the diamond groove (32) has stripes to prevent the copper tube from rotating. The copper tube fixing clamp (27) is provided with a fixing pad (33). The fixing pad (33) is provided with a bolt hole that matches the hexagon socket bolt.

7. The device for collecting and releasing rare gas samples in soil according to claim 1, characterized in that: The upper surface of the cavity is also provided with a rectangular groove (41), and a rectangular gasket (26) is placed in the rectangular groove (41) for sealing the upper cover (23) and the lower cover (37) of the gas release device, and the material is polytetrafluoroethylene.

8. The device for collecting and releasing rare gas samples in soil according to claim 1, characterized in that: A first circular gasket (14) is provided between the observation window (15) and the observation window upper flange (13), and a second circular gasket (17) is provided between the observation window (15) and the observation window lower flange (21); the observation window (15) is made of high borosilicate material, and the first circular gasket (14) and the second circular gasket (17) are made of polytetrafluoroethylene.

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