A device and method for installing gas pressure transmission medium in diamond pressure chamber

Abstract

The present invention provides a device for adding a diamond pressure chamber gas pressure transmission medium, and relates to the technical field of diamond pressure chamber; the adding device comprises: a thermos cup, a thermos cup cover, a metal cup, a metal cup cover and a sealing cover; the thermos cup cover is installed on the top of the thermos cup; a mounting hole is provided on the thermos cup cover; a fixing clip is provided on the thermos cup cover for fixing the metal cup cover; the upper end of the metal cup abuts against the thermos cup cover, and the lower end is suspended in the thermos cup; the metal cup cover is arranged on the top of the metal cup; four avoidance holes are provided on the metal cup cover; two first plugs and two second plugs are provided on the sealing cover, which are respectively used to be inserted into the four avoidance holes; the first plug is arranged on the sealing cover through; a joint part is provided on the upper end of the first plug for external piping; an air flow channel is provided axially on the first plug; the present invention also proposes a method for adding a diamond pressure chamber gas pressure transmission medium, which can be effectively used for adding a diamond pressure chamber gas pressure transmission medium.

Description

Technical Field

[0001] The invention relates to the technical field of diamond anvil cells, and in particular to a device and method for adding a gas pressure transmission medium to a diamond anvil cell. Background Art

[0002] The diamond anvil cell is a scientific device that can generate a static pressure of one million atmospheres and is the most important scientific instrument in the field of high-pressure science and technology research. Using specially made diamond anvil cells, the known upper limit of pressure has exceeded 1TPa. If combined with high-temperature technology, the temperature and pressure environment simulated in the laboratory can fully study the physical and chemical properties of earth-related substances. It is an important way to interpret seismic wave data and understand the internal structure and dynamic processes of the earth.

[0003] In order to provide a quasi-hydrostatic pressure environment and avoid the generation of stress fields that affect the experimental results, it is necessary to add gas, liquid or solid pressure transmission media to the sample chamber enclosed between the diamond anvil and the metal gasket to ensure that the sample in the sample chamber is in a relatively stable hydrostatic pressure environment. Among the above-mentioned pressure transmission media, the installation of liquid and solid pressure transmission media is simple and convenient; when installing gas pressure transmission media, it is necessary to first liquefy the target gas into liquid with liquid nitrogen, and then install the liquid gas pressure transmission medium in the sample chamber, and the installation process is relatively complicated. At present, there is no special experimental equipment on the market for the installation of gas pressure transmission media, and only some larger and bulky equipment can be used for the installation of gas pressure transmission media. Based on the above background, it is necessary to design a special experimental equipment for the installation of diamond pressure chamber gas pressure transmission media. Summary of the invention

[0004] The present invention aims to provide a device for adding a gas pressure transmission medium to a diamond anvil cell, which can effectively add a gas pressure transmission medium to a sample cavity of a diamond anvil cell.

[0005] The present invention provides a device for adding a gas pressure transmission medium to a diamond pressure chamber, comprising: a thermos cup, a thermos cup cover, a metal cup, a metal cup cover and a sealing cover;

[0006] The thermos cup cover is detachably mounted on the top of the thermos cup; a mounting hole is provided on the thermos cup cover; a fixing clip is provided on the thermos cup cover for fixing the metal cup cover on the top of the metal cup;

[0007] The metal cup is detachably inserted into the mounting hole; the upper end of the metal cup abuts against the thermos cup cover, and the lower end is suspended in the thermos cup;

[0008] The metal cup cover is detachably arranged on the top of the metal cup; the metal cup cover is provided with four avoidance holes, which are respectively used to facilitate a wrench to tighten four fastening bolts on the diamond pressure chamber;

[0009] Two first plugs and two second plugs are provided on the cover; the two first plugs and the two second plugs are respectively used to be inserted into the four avoidance holes; the first plug is arranged through the cover; a joint part is provided at the upper end of the first plug for external piping; an air flow channel is provided axially of the first plug, and the air flow channel is used to connect the inside and the outside of the metal cup.

[0010] In some preferred embodiments, the metal cup cover is colorless and transparent; the sealing cover is in the shape of a ring with an opening in the middle; an LED light assembly is provided at the bottom of the metal cup; the sealing cover, the metal cup cover and the LED light assembly cooperate to facilitate the user to observe the interior of the metal cup.

[0011] In some more preferred embodiments, the metal cup cover is made of acrylic.

[0012] In some more preferred embodiments, the LED lamp assembly includes an LED lamp and a lamp holder; the LED lamp is fixedly arranged on the top of the lamp holder.

[0013] In some preferred embodiments, the upper end of the metal cup is in a bell-mouth shape; the outer diameter of the upper end of the metal cup is larger than the inner diameter of the mounting hole.

[0014] In some preferred embodiments, the fixing clamp includes a splint, a push plate, a pull rod and a base; the base is fixedly arranged on the top of the thermos cup cover; the base is a hollow structure, and a through hole is arranged on the top of the base; the pull rod is movably arranged in the through hole; the lower end of the pull rod extends to the inside of the base, and the upper end extends to the outside of the base; one end of the splint is hinged to the upper end of the pull rod, and the other end is used to squeeze the top of the metal cup cover; a spring is sleeved on the outer side of the pull rod, and a limiting plate is arranged on the bottom of the pull rod; the upper end of the spring abuts against the top inside the base, and the lower end abuts against the limiting plate; the spring is in a compressed state; the base, the pull rod, the spring and the splint cooperate to fix the metal cup cover on the top of the metal cup; a push plate is arranged on the splint to facilitate the rotation of the splint.

[0015] In some preferred embodiments, a suction cup is provided at the bottom of the thermos cup for fixing the thermos cup on an operating table.

[0016] In some more preferred embodiments, the suction cup is a vacuum suction cup; the number of the suction cups is four, and the four suction cups are evenly distributed on the bottom of the thermos cup.

[0017] In some preferred embodiments, the number of the fixing clips is four; the four fixing clips are evenly distributed on the thermos cup cover.

[0018] The present invention further proposes a method for adding a gas pressure transmission medium using the above-mentioned device for adding a gas pressure transmission medium to a diamond pressure chamber, comprising the following steps:

[0019] S1, placing the mounting device for the diamond pressure chamber gas pressure transmission medium on the platform of the stereo microscope;

[0020] S2, lighting the LED lamp assembly, loosening the fastening bolts on the diamond pressure chamber, raising the diamond anvil located at the upper side of the diamond anvil, so that a gap is formed between the diamond anvil and the metal gasket in the diamond anvil, and placing the diamond pressure chamber with the loosened fastening bolts on the LED lamp assembly, and covering it with the metal cup cover;

[0021] S3, connecting a gas cylinder filled with a gas pressure medium to one of the two joints through an air inlet hose, connecting the other joint to one end of an exhaust hose, unscrewing the gas cylinder to allow the gas pressure medium to enter the metal cup, and exhausting the air in the metal cup to the outside through the exhaust hose;

[0022] S4, clamping the other end of the exhaust hose with a clip to disconnect it from the outside atmosphere; opening the thermos cup cover, adding cooling medium into the thermos cup and then covering the thermos cup cover, so that the gas pressure transmission medium is liquefied in the metal cup;

[0023] S5. When it is observed under a stereo microscope that the sample chamber in the diamond anvil is filled with liquid and the liquid level of the liquefied gas pressure medium completely covers the diamond anvil located above the diamond anvil, close the gas cylinder, pull out the sealing cover, and tighten the fastening bolts on the diamond pressure chamber with a wrench.

[0024] The beneficial effects of the technical solution provided by the embodiment of the present invention are as follows: the device for adding a gas pressure transmission medium to a diamond pressure chamber in the present invention comprises: a thermos cup, a thermos cup cover, a metal cup, a metal cup cover and a sealing cover; the thermos cup cover can be detachably mounted on the top of the thermos cup; the thermos cup cover is provided with a mounting hole; the thermos cup cover is provided with a fixing clip for fixing the metal cup cover on the top of the metal cup; the metal cup is detachably inserted into the mounting hole; the upper end of the metal cup abuts against the thermos cup cover, and the lower end is suspended The invention relates to a vacuum flask having a plurality of first and second stoppers, each of which is provided with a plurality of first stoppers and a plurality of ... The air flow channel is used to connect the inside and outside of the metal cup; when in use, first loosen the fastening bolts of the diamond pressure chamber, lift the diamond anvil located at the top of the diamond anvil, so that a gap is generated between the diamond anvil and the metal gasket in the diamond anvil, and place the diamond pressure chamber after the fastening bolts are loosened in the metal cup, and then pass a gas pressure medium into the metal cup, and then add a cooling medium into the thermos cup; under the action of the cooling medium, the gas pressure medium is cooled and liquefied, and when the liquid When the liquid level of the liquefied gas pressure medium in the metal cup is higher than the diamond anvil, the liquefied pressure medium flows into the sample chamber of the diamond anvil through the gap between the diamond anvil and the metal gasket. When the sample chamber is filled with the gas pressure medium, the cover is removed, and the wrench is used to tighten the fastening bolts on the diamond pressure chamber through the avoidance hole to realize the installation of the gas pressure medium in the diamond pressure chamber. The use is simple and convenient, and can be effectively used for the installation of the gas pressure medium in the diamond pressure chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of a device for installing a gas pressure transmission medium in a diamond pressure chamber in a certain embodiment of the present invention;

[0026] Figure 2 for Figure 1 A side view of a device for adding a gas pressure transmission medium to a diamond anvil;

[0027] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure in the AA direction of the device for adding a gas pressure transmission medium to the diamond pressure chamber;

[0028] Figure 4 for Figure 1 A schematic diagram of the three-dimensional structure of a thermos cup cover 2 in a device for adding a gas pressure transmission medium to a diamond pressure chamber;

[0029] Figure 5 for Figure 1 A schematic diagram of the three-dimensional structure of the metal cup cover 4 in the device for adding the gas pressure transmission medium to the diamond pressure chamber;

[0030] Figure 6 for Figure 1 A schematic diagram of the three-dimensional structure of the LED lamp assembly 6 in the installation device for the diamond pressure chamber gas pressure transmission medium;

[0031] Figure 7 for Figure 4 A schematic diagram of the three-dimensional structure of the fixing clip 7 in the thermos cup cover 2;

[0032] Figure 8 for Figure 7 A side view of the fixing clip 7;

[0033] Fig. 9 for Figure 8 A schematic diagram of the cross-sectional structure of the fixing clip 7 along the BB direction;

[0034] Fig.10 It is a schematic diagram of the three-dimensional structure of the diamond pressure chamber 9 in the prior art;

[0035] Fig.11 for Fig.10 A side view of the diamond anvil cell 9;

[0036] Fig.12 for Fig.11 A side view of the diamond anvil 8 in the diamond anvil cell 9;

[0037] Fig.13 for Figure 1 A schematic diagram of the three-dimensional structure of the cover 5 in the device for adding the gas pressure transmission medium to the diamond pressure chamber;

[0038] Among them, 1. thermos cup; 101. suction cup; 2. thermos cup cover; 201. mounting hole; 3. metal cup; 4. metal cup cover; 401. avoidance hole; 5. sealing cover; 501. first plug; 502. air flow channel; 503. second plug; 504. joint; 6. LED lamp assembly; 601. LED lamp; 602. lamp holder; 7. fixing clamp; 701. clamping plate; 702. push plate; 703. pull rod; 704. base; 705. spring; 706. limit plate; 8. diamond anvil; 801. diamond anvil; 802. sample chamber; 803. metal gasket; 9. diamond pressure chamber; 10. fastening bolts. DETAILED DESCRIPTION

[0039] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0040] Please refer to Figures 1 to 5 An embodiment of the present invention provides a device for adding a gas pressure transmission medium to a diamond pressure chamber, comprising: a thermos cup 1, a thermos cup cover 2, a metal cup 3, a metal cup cover 4 and a sealing cover 5.

[0041] The thermos cup 1 is used to contain cooling medium and has a certain heat preservation effect.

[0042] The thermos cup cover 2 is detachably mounted on the top of the thermos cup 1; the thermos cup cover 2 is connected to the top stopper of the thermos cup 1; a mounting hole 201 is provided on the thermos cup cover 2; the mounting hole 201 is located in the middle of the thermos cup cover 2; a fixing clip 7 is provided on the thermos cup cover 2; there are four fixing clips 7; the four fixing clips 7 are evenly distributed on the thermos cup cover 2 and are located on the same circumference; the four fixing clips 7 cooperate to fix the metal cup cover 4 on the top of the metal cup 3.

[0043] The metal cup 3 is detachably inserted into the mounting hole 201; the upper end of the metal cup 3 is in contact with the thermos cup cover 2, and the lower end is suspended in the thermos cup 1; when in use, the cooling medium is filled in the space enclosed by the thermos cup 1, the thermos cup cover 2 and the metal cup 3, and is in full contact with the outer wall of the metal cup 3, and heat exchange is performed with the gas pressure transfer medium located in the metal cup 3 through the metal cup 3.

[0044] The metal cup cover 4 is detachably arranged on the top of the metal cup 3, and is used to cover the top of the metal cup 3; four avoidance holes 401 are arranged on the metal cup cover 4, which are used to facilitate the wrench to tighten the four fastening bolts 10 on the diamond pressure chamber 9; when in use, the four fastening bolts 10 on the diamond pressure chamber 9 in the metal cup 3 are respectively located directly below the avoidance holes 401; when the gas pressure medium is installed, a wrench is used to extend into the metal cup 3 from the avoidance hole 401 to tighten the fastening bolts 10 on the diamond pressure chamber 9, so that the diamond pressure chamber 9 can be fastened under low temperature, and the gas pressure medium in the sample chamber 802 can be effectively prevented from volatilizing due to the installation of the diamond pressure chamber 9 to the outside of the metal cup 3 for fastening.

[0045] refer to Fig.13Two first plugs 501 and two second plugs 503 are provided on the cover 5; the two first plugs 501 and the two second plugs 503 are respectively used to be inserted into the four avoidance holes 401; the first plug 501 is set through the cover 5 and is fixed to the cover 5 by glue; the second plug 503 is located at the bottom of the cover 5 and is fixed to the cover 5 by glue; a joint part 504 is provided at the upper end of the first plug 501 for external piping; an air flow channel 502 is provided axially of the first plug 501, and the air flow channel 502 is used to connect the inside and the outside of the metal cup 3.

[0046] Specifically, refer to Figure 3 and Figure 6 The metal cup cover 4 is colorless and transparent; the sealing cover 5 is in the shape of a ring with an opening in the middle, so that it is convenient to observe the interior of the metal cup 3 through the metal cup cover 4 from the opening of the sealing cover 5; an LED lamp assembly 6 is arranged at the bottom of the metal cup 3; the LED lamp assembly 6 includes an LED lamp 601 and a lamp holder 602; the LED lamp 601 is fixedly arranged on the top of the lamp holder 602; the sealing cover 5, the metal cup cover 4 and the LED lamp assembly 6 cooperate to facilitate the user to observe the interior of the metal cup 3; when in use, light up the LED lamp 601, place the diamond pressure chamber 9 on the lamp holder 602, and place the installation device for the diamond pressure chamber gas pressure transmission medium on the operating table of the stereo microscope; the installation of the gas pressure transmission medium in the sample cavity 802 can be observed through the stereo microscope.

[0047] In this embodiment, the material of the metal cup cover 4 is acrylic; specifically, the acrylic is highly transparent acrylic.

[0048] Specifically, refer to Figure 3 The upper end of the metal cup 3 is in a trumpet shape; the outer diameter of the upper end of the metal cup 3 is larger than the inner diameter of the mounting hole 201; the outer side of the upper end of the metal cup 3 abuts against the top of the side wall of the mounting hole 201, supporting the metal cup 3 in the thermos cup 1; the upper end of the metal cup 3 protrudes from the thermos cup cover 2.

[0049] Specifically, refer to Figures 7 to 9The fixing clamp 7 includes a clamping plate 701, a push plate 702, a pull rod 703 and a base 704; the base 704 is fixedly arranged on the top of the thermos cup cover 2; the base 704 is a hollow structure, and a through hole is arranged on the top of the base 704 (not shown in the figure); the pull rod 703 is movably arranged in the through hole; the lower end of the pull rod 703 extends to the inside of the base 704, and the upper end extends to the outside of the base 704; one end of the clamping plate 701 is hinged to the upper end of the pull rod 703, and the other end is used to squeeze the top of the metal cup cover 4; a spring 705 is sleeved on the outer side of the pull rod 703, and a limit plate 706 is arranged at the bottom of the pull rod 703; the upper end of the spring 705 is hinged to the base 704 The top of the metal cup cover 4 abuts against the bottom, and the lower end abuts against the limit plate 706; the spring 705 is in a compressed state; the base 704, the pull rod 703, the spring 705 and the splint 701 cooperate to fix the metal cup cover 4 on the top of the metal cup 3; a push plate 702 is provided on the splint 701 to facilitate the rotation of the splint 701; the push plate 702 is arranged perpendicular to the splint 701 and is located directly above the pull rod 703; under the action of the spring 705, the splint 701 remains parallel to the thermos cup cover 2 and abuts against the top of the metal cup cover 4; when the metal cup cover 4 needs to be removed, the splint 701 is rotated by the push plate 702 so that the splint 701 and the thermos cup cover 2 are in a vertical state.

[0050] Further, refer to Figure 1 In order to fix the thermos cup 1 on the operating platform, a suction cup 101 is provided at the bottom of the thermos cup 1; the suction cup 101 is a vacuum suction cup; the number of the suction cups 101 is four, and the four suction cups 101 are evenly distributed at the bottom of the thermos cup 1.

[0051] refer to Figure 10 to Figure 11 The diamond pressure chamber 9 in the prior art presses the diamond anvil 8 by four fastening bolts 10; the diamond anvil 8 in the prior art includes a diamond anvil 801 and a metal gasket 803; a sample chamber 802 is formed between the diamond anvil 801 and the metal gasket 803; the installation device for the diamond pressure chamber gas pressure medium is used to install the gas pressure medium into the sample chamber 802; when installing, first loosen the fastening bolts 10 by the wrench, and gently pull the diamond pressure chamber 9, under the friction force of the diamond pressure chamber 9 itself, the diamond anvil 801 located above will be suspended on the metal gasket 803, so that a gap is generated between the diamond anvil 801 and the metal gasket 803, so that the gas pressure medium can enter the sample chamber 802 after liquefaction.

[0052] Exemplarily, the wrench can be an Allen wrench; accordingly, the fastening bolt 10 is an Allen bolt; when it is necessary to tighten the fastening bolt 10, remove the cover 5, insert the Allen wrench into the metal cup 3 through the avoidance hole 401, and tighten the fastening bolt 10; at the same time, the user can observe the situation inside the metal cup 3 through the metal cup cover 4, which is convenient for tightening the fastening bolt 10.

[0053] The method for adding a gas pressure transmission medium using the device for adding a gas pressure transmission medium to the diamond pressure chamber in this embodiment comprises the following steps:

[0054] S1, fixing the installation device for the diamond pressure chamber gas pressure transmission medium on the operating platform of the stereo microscope through the suction cup 101;

[0055] S2, light up the LED lamp 601, loosen the fastening bolts 10 on the diamond pressure chamber 9, lift the diamond anvil 801 located at the top of the diamond anvil 8, so that a gap is generated between the diamond anvil 801 and the metal gasket 803 in the diamond anvil 8, and place the diamond pressure chamber 9 after loosening the fastening bolts 10 on the LED lamp assembly 6, and cover it with the metal cup cover 4;

[0056] S3, connect the gas cylinder containing the gas pressure medium to one of the two joints 504 through an air inlet hose (not shown in the figure), connect the other joint 504 to one end of an exhaust hose (not shown in the figure), unscrew the gas cylinder, so that the gas pressure medium enters the metal cup 3, and exhaust the air in the metal cup 3 to the outside through the exhaust hose;

[0057] S4, clamp the other end of the exhaust hose with a clip to disconnect it from the outside atmosphere; open the thermos cup cover 2, add cooling medium into the thermos cup 1 and then cover the thermos cup cover 2, so that the gas pressure transmission medium is liquefied in the metal cup 3;

[0058] S5. When it is observed under a stereo microscope that the sample chamber 802 in the diamond anvil 8 is filled with liquid and the liquid level of the liquefied gas pressure medium completely covers the diamond anvil 801 located above the diamond anvil 8, close the gas cylinder, pull out the sealing cover 5, tighten the fastening bolts 10 on the diamond pressure chamber 9 with a wrench, and complete the installation of the gas pressure medium.

[0059] In this embodiment, the cooling medium is liquid nitrogen; the gas used for the gas pressure transmission medium is argon; the mass of argon is greater than that of air and it is easy to liquefy; when the argon enters the metal cup 3 from the air flow channel 502, it first drops to the bottom of the metal cup 3 and discharges the air above to the outside of the metal cup 3 through another air flow channel 502.

[0060] The advantages of the device for adding the gas pressure transmission medium to the diamond anvil in this embodiment are as follows:

[0061] The installation device for the diamond pressure chamber gas pressure medium in this embodiment is designed according to the actual size of the diamond pressure chamber 9, and can be placed under a stereo microscope for observation. The installation device is compact and portable, which improves the portability of the installation device for the diamond pressure chamber gas pressure medium and ensures the possibility of remote experiments in the diamond pressure chamber 9.

[0062] Secondly, the metal cup 3 is suspended in the thermos cup 1, which ensures the heat exchange area between the gas pressure medium and the liquid nitrogen, improves the refrigeration efficiency of the liquid nitrogen, and reduces the time for liquefying and adding the gas pressure medium;

[0063] Thirdly, the device for adding the gas pressure medium to the diamond pressure chamber in this embodiment can be operated under the stereo microscope, thereby realizing the visualization of the process of adding the gas pressure medium to the diamond pressure chamber 9.

[0064] In this document, the directional words such as front, back, top, and bottom are defined by the positions of the components in the drawings and the positions of the components relative to each other, and are only for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the directional words should not limit the scope of protection claimed in this application.

[0065] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for adding a gas pressure medium to a diamond pressure chamber, characterized in that: include: Thermos cups, thermos cup lids, metal cups, metal cup lids and closures; The thermos cup cover is detachably mounted on the top of the thermos cup; a mounting hole is provided on the thermos cup cover; a fixing clip is provided on the thermos cup cover for fixing the metal cup cover on the top of the metal cup; The metal cup is detachably inserted into the mounting hole; the upper end of the metal cup abuts against the thermos cup cover, and the lower end is suspended in the thermos cup; The metal cup cover is detachably arranged on the top of the metal cup; the metal cup cover is provided with four avoidance holes, which are respectively used to facilitate a wrench to tighten four fastening bolts on the diamond pressure chamber; The cover is provided with two first plugs and two second plugs; the two first plugs and the two second plugs are respectively used to be inserted into the four avoidance holes; the first plug is arranged through the cover; the upper end of the first plug is provided with a joint part for external pipe; the axial direction of the first plug is provided with an air flow channel, and the air flow channel is used to connect the inside and the outside of the metal cup; The metal cup cover is colorless and transparent; the cover is in the shape of a ring with an opening in the middle; an LED light assembly is provided at the bottom of the metal cup; the cover, the metal cup cover and the LED light assembly cooperate to facilitate the user to observe the interior of the metal cup; The fixing clamp includes a splint, a push plate, a pull rod and a base; the base is fixedly arranged on the top of the thermos cup cover; the base is a hollow structure, and a through hole is arranged on the top of the base; the pull rod is movably arranged in the through hole; the lower end of the pull rod extends to the inside of the base, and the upper end extends to the outside of the base; one end of the splint is hinged to the upper end of the pull rod, and the other end is used to squeeze the top of the metal cup cover; a spring is sleeved on the outer side of the pull rod, and a limiting plate is arranged at the bottom of the pull rod; the upper end of the spring abuts against the top inside the base, and the lower end abuts against the limiting plate; the spring is in a compressed state; the base, the pull rod, the spring and the splint cooperate to fix the metal cup cover on the top of the metal cup; a push plate is arranged on the splint to facilitate the rotation of the splint.

2. The device for adding gas pressure transmission medium to a diamond pressure chamber according to claim 1, characterized in that: The material of the metal cup cover is acrylic.

3. The device for adding a gas pressure transmission medium to a diamond pressure chamber according to claim 1, characterized in that: The LED lamp assembly comprises an LED lamp and a lamp holder; the LED lamp is fixedly arranged on the top of the lamp holder.

4. The device for adding a gas pressure transmission medium to a diamond pressure chamber according to claim 1, characterized in that: The upper end of the metal cup is in a trumpet shape; the outer diameter of the upper end of the metal cup is greater than the inner diameter of the mounting hole.

5. The device for adding gas pressure transmission medium to a diamond pressure chamber according to claim 1, characterized in that: A suction cup is arranged at the bottom of the thermos cup, which is used to fix the thermos cup on the operating table.

6. The device for adding gas pressure transmission medium to a diamond pressure chamber according to claim 5, characterized in that: The suction cup is a vacuum suction cup; there are four suction cups, which are evenly distributed on the bottom of the thermos cup.

7. The device for adding gas pressure transmission medium to a diamond pressure chamber according to claim 1, characterized in that: The number of the fixing clips is four; the four fixing clips are evenly distributed on the thermos cup cover.

8. A method for adding a gas pressure transmission medium using the device for adding a gas pressure transmission medium to a diamond pressure chamber as claimed in any one of claims 1 to 3, characterized in that: The steps include: S1, placing the mounting device for the diamond pressure chamber gas pressure transmission medium on the platform of the stereo microscope; S2, lighting the LED lamp assembly, loosening the fastening bolts on the diamond pressure chamber, raising the diamond anvil located at the upper side of the diamond anvil, so that a gap is formed between the diamond anvil and the metal gasket in the diamond anvil, and placing the diamond pressure chamber with the loosened fastening bolts on the LED lamp assembly, and covering it with the metal cup cover; S3, connecting a gas cylinder filled with a gas pressure medium to one of the two joints through an air inlet hose, connecting the other joint to one end of an exhaust hose, unscrewing the gas cylinder to allow the gas pressure medium to enter the metal cup, and exhausting the air in the metal cup to the outside through the exhaust hose; S4, clamping the other end of the exhaust hose with a clip to disconnect it from the outside atmosphere; opening the thermos cup cover, adding cooling medium into the thermos cup and then covering the thermos cup cover, so that the gas pressure transmission medium is liquefied in the metal cup; S5. When it is observed under a stereo microscope that the sample chamber in the diamond anvil is filled with liquid and the liquid level of the liquefied gas pressure medium completely covers the diamond anvil located above the diamond anvil, close the gas cylinder, pull out the sealing cover, and tighten the fastening bolts on the diamond pressure chamber with a wrench.

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