CN218382127U

CN218382127U - Diamond anvil cell device

Info

Publication number: CN218382127U
Application number: CN202222473563.5U
Authority: CN
Inventors: 王磊; 朱君
Original assignee: Beijing Yijie Material Technology Co ltd
Current assignee: Beijing Yijie Material Technology Co ltd
Priority date: 2022-09-19
Filing date: 2022-09-19
Publication date: 2023-01-24
Anticipated expiration: 2032-09-19

Abstract

The application provides a diamond anvil cell device, includes: the pressing machine comprises a pressing machine main body, a pressing machine fixing part and a pressing part, wherein the pressing machine main body is provided with a first cavity which penetrates through the pressing machine main body and is provided with a first opening at the top; the anvil sample group is arranged in the first cavity and comprises a first anvil and a second anvil which are distributed along a first direction, a first space formed between the first anvil and the second anvil is used for placing a sample, and two sides of the sample are respectively abutted against the first anvil and the second anvil; the rotary driving assembly is used for driving the first anvil to rotate and providing shear stress for the sample close to the first anvil; the pressurizing assembly is used for providing a compressive stress along the first direction to the sample close to the second anvil side. The device realizes synchronous application of the shear stress in situ under the compressive stress, simulates the real stress condition of the substances in the deep part of the earth, and improves the accuracy of the experimental result.

Description

Diamond anvil cell device

Technical Field

The application relates to the technical field of high-pressure mechanics research, in particular to a diamond anvil cell device.

Background

The static high pressure technology relates to a plurality of fields of condensed state physics, materials science, geology, mechanics and the like, belongs to the multidisciplinary crossing field, and is mainly used for researching the influence of hydrostatic pressure and pressure on the structure and the property of a substance.

In the prior art, a Mao-Bell type diamond anvil cell device is mostly adopted to carry out research, the device applies compressive stress to substances inside the device through external mechanical loading pressure, and a hydrostatic pressure high-pressure environment of Gpa level is formed in a sample, but the hydrostatic pressure experimental environment can only provide the compressive stress and cannot provide the shear stress, so that the real stress condition of substances in the deep part of the earth cannot be simulated, the accuracy of an experimental result is influenced, and the more extensive and deep research of the deep science of the earth is also restricted.

Disclosure of Invention

In view of the above-mentioned drawbacks or deficiencies of the prior art, the present application is directed to a diamond anvil device comprising:

the pressing machine comprises a pressing machine main body, wherein the pressing machine main body is provided with a first cavity which penetrates through the pressing machine main body, and a first opening is formed in the top of the first cavity.

The anvil sample group is arranged in the first cavity and comprises a first anvil and a second anvil which are distributed along a first direction, a first space is formed between the first anvil and the second anvil and used for placing a sample, and two sides of the sample are respectively abutted against the first anvil and the second anvil;

the rotary driving assembly is used for driving the first anvil to rotate and providing shear stress for the sample close to the first anvil side;

a pressing assembly for providing a compressive stress in the first direction to the sample proximate the second anvil side.

According to the technical scheme that this application embodiment provided, first anvil is kept away from second anvil end is equipped with runner assembly, runner assembly's one end is arranged in the first cavity, the other end exposes outside the press main part, runner assembly is close to the one end of first anvil is equipped with first recess, the opening direction orientation of first recess first anvil side, be equipped with first cushion in the first recess, first recess side is kept away from to first cushion with first anvil is connected, runner assembly keeps away from first recess end with the rotation driving subassembly is connected, the rotation driving subassembly is used for the drive first cushion drives first anvil rotates.

According to the technical scheme that this application embodiment provided, the rotation driving subassembly include with the runner assembly is kept away from driven gear that first anvil end is connected, with driven gear meshing's driving gear, and drive the driving gear drives driven gear pivoted driving motor.

According to the technical scheme provided by the embodiment of the application, the pressing device further comprises a pressing frame body, the pressing frame body comprises a first partition plate sleeved outside the rotating assembly, the first partition plate is arranged at the top of the pressing machine main body, and the first partition plate is used for limiting the pressing machine main body to move towards the driven gear along the first direction; a second cushion block is arranged in the first cavity and far away from the first partition plate, and the side, close to the first partition plate, of the second cushion block is connected with the second anvil block; the pressing assembly may provide a force to the second pad in the first direction.

According to the technical scheme provided by the embodiment of the application, the pressurizing assembly comprises:

the pressurizing base is arranged on the side, far away from the first partition plate, of the press main body, a second cavity is arranged in the pressurizing base, a first inlet communicated with the second cavity is formed in the side, close to the press main body, of the pressurizing base, a guide part is arranged in the middle of the bottom surface of the second cavity, and the extending direction of the guide part is the first direction;

the piston assembly comprises a vertical part sleeved outside the guide part and a transverse part connected to the vertical part and close to the side of the press main body, and the transverse part is arranged outside the first inlet; the outer wall of the vertical part is tightly attached to the inner wall of the second cavity, and the press main body is arranged on the side, away from the vertical part, of the transverse part;

a hydraulic assembly for driving the piston assembly to move in the first direction along the guide.

According to the technical scheme provided by the embodiment of the application, a circle of first sealing element is arranged on the guide part, a first circle of second sealing element is arranged on the vertical part, and a second space is formed among the first sealing element, which is far away from the lateral part side, the second sealing element, which is far away from the lateral part side, the vertical part and the inner wall of the second cavity; the bottom of the pressurizing base is provided with a first through hole, the first through hole is communicated with the second space, the first through hole is far away from the end of the second space, and the hydraulic component is used for conveying hydraulic oil into the second space.

According to the technical scheme provided by the embodiment of the application, a fastening assembly is sleeved outside the press main body and used for fixing the press main body on the transverse part.

According to the technical scheme that this application embodiment provided, driven gear keeps away from the rotating assembly side is equipped with measuring assembly for measure rotating assembly's turned angle.

According to the technical scheme that this application embodiment provided, the measuring component driven gear and the runner assembly middle part is equipped with coaxial first through-hole group, the axis direction of first through-hole group does first direction, first through-hole group is used for following first direction axial advances light.

According to the technical scheme provided by the embodiment of the application, the side wall of the press main body is provided with a plurality of second openings communicated with the first cavity, and the second openings are used for radially feeding light along a second direction perpendicular to the first direction.

In summary, the present application provides a diamond anvil cell device, in which an anvil cell sample set is disposed in a first cavity of a press main body, the anvil cell sample set includes a first anvil cell and a second anvil cell disposed in a tip-to-tip manner along a first direction, and a sample disposed in a first space therebetween, a top of the sample abuts against the first anvil cell, a bottom of the sample abuts against the second anvil cell, the first anvil cell is driven by a rotary driving assembly to rotate, a shearing stress is formed on a side of the sample close to the first anvil cell, the press main body is jacked upwards by a pressurizing assembly, and a pressing stress is formed on a side of the sample close to the second anvil cell. Compared with the prior art, provide shear stress for sample one side through the rotation driving subassembly, the pressurization subassembly provides compressive stress for the sample opposite side, and this device realizes that the sample receives shear stress simultaneously under the compressive stress effect, has simulated the true atress condition of the deep material of earth, has improved the accuracy of experimental result.

Drawings

FIG. 1 is a schematic cross-sectional view of a diamond anvil cell apparatus provided in accordance with an embodiment of the present application;

FIG. 2 is a schematic diagram of a diamond anvil cell arrangement (without hydraulic components) according to an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of a diamond anvil cell (with hydraulic components) according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a supporting and pressurizing frame of a diamond anvil cell device provided by an embodiment of the application.

The text labels in the figures are represented as:

1. a press main body; 2. a rotating assembly; 3. a driven gear; 4. a measurement assembly; 5. a driving gear; 6. a drive motor; 7. a drive shaft; 8. a pressurizing base; 9. a piston assembly; 10. a fastening assembly; 11. a top plate; 12. a first separator; 13. a thrust bearing; 14. a pressure bearing plate; 15. a third through hole; 16. a first cushion block; 17. a second anvil; 18. a first anvil; 19. a second cushion block; 20. a first seal member; 21. a second seal member; 22. a second fixed jackscrew; 23. a hydraulic assembly; 24. supporting the pressurizing frame; 101. a second opening; 102. a boss; 111. a slave top plate.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings. As mentioned in the background, the present application proposes, in response to the problems of the prior art, a diamond anvil cell device, as shown in fig. 1 to 3, comprising:

the press comprises a press main body 1, wherein the press main body 1 is provided with a first cavity which penetrates through the press main body, and the top of the first cavity is provided with a first opening; optionally, the press main body 1 is cylindrical, 440c high-strength martensitic steel is selected, a circular boss 102 is arranged on the periphery of the first opening, a second through hole group is arranged on the boss 102 and comprises six circular through holes which are circumferentially distributed in an array manner and have the diameter of 5-8 mm, a tapered hole which is coaxial with the first opening is formed in the bottom of the press main body 1, the diameter of the tapered hole gradually increases from top to bottom along a first direction, the diameter of the bottom of the tapered hole which is far away from the side of the first cavity is 8mm, and the opening angle is 60 degrees and is used for providing axial light entering along the first direction for the anvil sample group;

the anvil sample group is arranged in the first cavity and comprises a first anvil 18 and a second anvil 17 which are distributed along a first direction, a first space is formed between the first anvil 18 and the second anvil 17 and used for placing a sample, and two sides of the sample are respectively abutted against the first anvil 18 and the second anvil 17; optionally, the first anvil 18 and the second anvil 17 adopt two diamond anvils with the same specification up and down along a first direction, the diameter of an anvil surface is 500 micrometers, the anvil surfaces of the first anvil 18 and the second anvil 17 are opposite and are placed in a point-to-point manner, the first space formed between the anvil surfaces is used for placing a sample cell, the sample cell is a round T301 steel sheet with a sample hole in the middle, the sample is placed in the sample hole, the sample is abutted against the first anvil 18 near the first opening side, and the sample is abutted against the second anvil 17 far from the first opening side;

a rotary drive assembly for driving the first anvil 18 to rotate to provide shear stress to the sample on the side close to the first anvil 18; optionally, when the rotary driving component radially rotates along a second direction perpendicular to the first direction, the first anvil 18 is driven to rotate in the same direction, and the sample is subjected to an external rotating force of the first anvil 18 on the abutting surface of the sample and the first anvil 18, so as to provide a shear stress for the sample;

a pressing member for providing a pressing force in the first direction to the side of the sample close to the second anvil 17; optionally, the pressing assembly is used for providing a pressing stress along the first direction to the side, close to the second anvil 17, of the sample by providing an upward force to the press main body 1; the scheme realizes that the sample is simultaneously subjected to the shear stress under the action of the pressure stress, simulates the real stress condition of substances in the deep part of the earth, and improves the accuracy of the experimental result.

As shown in fig. 1-3, further, a rotating assembly 2 is arranged at the end of the first anvil 18 away from the second anvil 17, one end of the rotating assembly 2 is arranged in the first cavity, the other end of the rotating assembly is exposed outside the press main body 1, a first groove is arranged at the end of the rotating assembly 2 close to the first anvil 18, the opening direction of the first groove faces the first anvil 18 side, a first pad 16 is arranged in the first groove, the first pad 16 is connected with the first anvil 18 away from the first groove side, the end of the rotating assembly 2 away from the first groove is connected with a rotary driving assembly, and the rotary driving assembly is used for driving the first pad 16 to drive the first anvil 18 to rotate; optionally, the rotating assembly 2 is a hollow cylindrical piston rod, and is made of high-strength martensitic steel, the outer diameter of the piston rod is close to the inner diameter of the first cavity, one end of the piston rod is arranged in the first cavity along a first direction, the fit clearance between the piston rod and the first cavity does not exceed +0.02mm, the first groove is a circular groove coaxially arranged with the first opening, the first cushion block 16 is a tungsten carbide round table which is provided with a through hole in the middle and matched with the first groove, the tungsten carbide round table is arranged in the first groove and coaxially arranged with the first opening, 4M 2-M3 first fixed jackscrews distributed in an array manner in the circumferential direction are fixed on the piston rod, the first anvil 18 is bonded to the first cushion block 16 by high-strength epoxy resin, the top of the piston rod exposed out of the press main body 1 is provided with four M2.5-M4 first grooves distributed in an array manner in the circumferential direction, and is used for connecting the piston rod with the rotary driving assembly to drive the piston rod to rotate, so as to drive the first anvil 16 to drive the first anvil 18 to rotate.

Further, the rotary driving assembly comprises a driven gear 3 which is connected with the rotating assembly 2 and far away from the first anvil 18 end, a driving gear 5 engaged with the driven gear 3, and a driving gear 5 driving the driving gear 5 to drive a driving motor 6 for driving the driven gear 3 to rotate, optionally, the driven gear 3 is provided with four threaded through holes opposite to the first threaded groove, four 12.9-level M3 countersunk bolts are adopted to connect the high-strength driven gear 3 with the piston rod, the driving motor 6 is vertically placed along a first direction, a transmission shaft 7 is arranged at the bottom, the transmission shaft 7 is far away from the side of the driving motor 6 and connected with the driving gear 5, the driving gear 5 is engaged with the driven gear 3, the driving motor 6 drives the driving gear 5 to rotate, so that the driven gear 3 is linked, and the piston rod connected with the driven gear 3 is driven to rotate.

As shown in fig. 4, further, the present invention further includes a pressing frame, the pressing frame includes a first partition plate 12 sleeved outside the rotating assembly 2, the first partition plate 12 is disposed at the top of the press main body 1, and the first partition plate 12 is configured to limit the press main body 1 from moving toward the side close to the driven gear 3 along the first direction; a second cushion block 19 is arranged in the first cavity and far away from the first partition plate 12, the side, close to the first partition plate 12, of the second cushion block 19 is connected with the second anvil 17, and the pressurizing assembly can provide acting force along the first direction for the second cushion block 19; in a certain specific scene, the pressing frame body is provided with a top plate 11 and a first partition plate 12 along a first direction, the top plate 11 and the first partition plate 12 are both square plates with a certain thickness, a through hole is formed in the middle, mounting holes are formed in four corners of each square plate, the square plates are coaxially arranged with the first opening and serve as axial light inlet holes, one side of the top plate 11 is connected with a slave top plate 111, a through hole is formed in the middle of the slave top plate 111, and the slave top plate 111 is sleeved on a transmission shaft 7 of a rotary driving assembly and used for fixing the rotary driving assembly; optionally, the first partition plate 12 is provided with a circular second through hole, the axial direction of the second through hole is the first direction, the inner diameter of the second through hole is larger than the outer diameter of the piston rod and smaller than the first opening, so that the first partition plate 12 can be sleeved outside the piston rod and can limit the press body 1 to move towards the side close to the driven gear 3 along the first direction, a third through hole group opposite to the second through hole group of the boss 102 is arranged on the periphery of the second through hole, the third through hole group comprises 6 through holes with the diameters of 5-8 mm distributed in an array manner in the circumferential direction and is used for bolt-fixing the press body 1 and the first partition plate 12, a circular second groove coaxially arranged with the first opening is arranged on the side far away from the circular boss 102 of the press body 1, the second partition plate 19 adopts tungsten carbide matched with the second groove and having through holes in the middle, the second partition plate 19 is arranged in the second groove and is placed in the second through hole, the second partition plate 19 is coaxially arranged with 4M 2 fixing jackscrews distributed in the array manner in the circumferential direction, and is used for fixing the second partition plate 19, and providing the pressing force for adjusting the second partition plate 17 by utilizing the epoxy anvil block to provide the second pressing force.

As shown in fig. 3, further, the pressurizing assembly includes:

the pressurizing base 8 is arranged on the side, far away from the first partition plate 12, of the press main body 1, a second cavity is formed in the pressurizing base 8, a first inlet communicated with the second cavity is formed in the side, close to the press main body 1, of the pressurizing base 8, a guide part is arranged in the middle of the bottom surface of the second cavity, and the extending direction of the guide part is the first direction; optionally, the pressurizing base 8 is a square plate with a certain thickness and an annular groove in the middle, the cylindrical structure left inside the annular groove is the guiding portion, a through hole is formed inside the guiding portion, the axis direction is the first direction, the cylindrical structure and the first opening are coaxially arranged and are used for axially feeding light to the bottom, the pressurizing base 8 is used for supporting the press main body 1, in a certain specific scene, four mounting holes are formed in four corners of the square plate-shaped structure of the pressurizing base 8, four supporting columns penetrate through the top plate 11, the first partition plate 12 and the mounting holes of the pressurizing base 8 of the pressurizing platform to form a complete three-layer four-column frame structure as the supporting pressurizing frame 24, and the supporting pressurizing frame 24 synchronously realizes the bearing pressurization of the press main body 1 and the supporting of the rotary driving assembly.

The piston assembly 9 comprises a vertical part sleeved outside the guide part and a transverse part connected to the vertical part and close to the side of the press main body 1, and the transverse part is arranged outside the first inlet; the outer wall of the vertical part is tightly attached to the inner wall of the second cavity, and the press main body 1 is arranged on the side of the transverse part far away from the vertical part; optionally, the guide portion is used for stabilizing the displacement of the piston assembly 9 along the first direction, and in certain specific scenarios, when the piston assembly 9 is subjected to an upward thrust force along the first direction, the vertical portion outer wall of the piston assembly 9 moves upwards along the first direction in close contact with the second cavity inner wall, pushing the press main body 1 placed on the transverse portion to move upwards, and as the first partition plate 12 is clamped on the top of the press main body 1, the second anvil 17 is subjected to a compressive stress along the first direction;

a hydraulic assembly 23, said hydraulic assembly 23 being adapted to drive said piston assembly 9 along said guide in said one direction; optionally, in a specific scenario, the hydraulic component 23 is a precision syringe pump, configured to deliver pressurized liquid into the second cavity, and provide hydraulic pressure in the first direction to the piston component 9, and the first inlet serves as a standard hydraulic interface, and is configured to connect the pressurization base 8 with the precision syringe pump, and when the precision syringe pump displays an output pressure of 3Mpa, a maximum pressure stress of 30Gpa can be generated at the sample end.

As shown in fig. 1, a circle of first sealing element 20 is arranged on the guiding portion, a circle of second sealing element 21 is arranged on the vertical portion, and a second space is formed between the first sealing element 20 away from the lateral portion side, the second sealing element 21 away from the lateral portion side, the vertical portion and the inner wall of the second cavity; a first through hole is formed in the bottom of the pressurizing base 8 and is communicated with the second space, a hydraulic assembly 23 is arranged at the end, far away from the second space, of the first through hole, and the hydraulic assembly 23 is used for conveying hydraulic oil into the second space; optionally, the first sealing element 20 and the second sealing element 21 both adopt fluororubber sealing rings, and form a coaxial rubber ring double-sealing structure in a matching manner, so that when the hydraulic assembly 23 conveys hydraulic oil into the second cavity, in a process that the piston assembly 9 moves upward under pressure provided by the hydraulic oil, the hydraulic oil does not overflow in the second space, and a stable upward jacking force in the first direction is provided for the piston assembly 9.

As shown in fig. 2, further, a fastening assembly 10 is sleeved outside the press main body 1, and the fastening assembly 10 is used for fixing the press main body 1 on the transverse portion. Optionally, the fastening assembly 10 includes two arc fastening rings matching with the press main body 1, and the two arc fastening rings are symmetrically disposed on the transverse portion, and when the press main body 1 is disposed on the transverse portion, the fastening rings are sleeved outside the press main body 1 to prevent rotation and displacement of the press main body 1 during pressing rotation.

As shown in fig. 2, further, the driven gear 3 is far away from the rotating assembly 2 side and is provided with a measuring assembly 4 for measuring the rotating angle of the rotating assembly 2, optionally, the measuring assembly 4 comprises a cylindrical dial, the driven gear 3 is provided with a threaded hole group distributed circumferentially in an array, the dial is close to the driven gear 3 side and is provided with a corresponding threaded hole group, the dial is vertically fixed on the driven gear 3 far away from the rotating assembly 2 side along a first direction by using a countersunk bolt, a cylindrical through hole of the dial is coaxially arranged with the first opening along the first direction and is used for measuring the rotating angle of the rotating assembly 2 in an experiment, because the shearing stress angle generated by rotation required by phase change of each substance is different, the rotating angle can be measured by the dial when the substance is in phase change, the dial is provided with a thrust bearing 13 having a through hole in the middle along the first direction far away from the driven gear 3 side, the upper part of the thrust bearing 13 is provided with a bearing plate 14 having a through hole in the middle, and abuts against the top plate 11 of the pressurizing frame body and is close to the driven gear 3 side to complete fixing of the device.

As shown in fig. 1-2, further, the measuring assembly 4, the driven gear 3, and the rotating assembly 2 are provided with a first coaxial through hole set, an axial direction of the first through hole set is the first direction, and the first through hole set is used for axially feeding light along the first direction; optionally, circular through holes are formed in the middle of the measuring assembly 4, the driven gear 3 and the rotating assembly 2, the through hole of the rotating assembly 2 is a third through hole 15, the diameter of the third through hole 15 is 2-10 mm, the first partition plate 12 through hole, the thrust bearing 13 through hole, the dial disc cylinder through hole, the driven gear 3 through hole, the third through hole 15, the piston assembly 9 through hole and the guide part through hole sequentially form an axial light through hole from top to bottom along a first direction, and coaxial assembly is performed according to the axial through hole alignment one by one during assembly of the device.

As shown in fig. 2, a plurality of second openings 101 communicating with the first cavity are further provided on the side wall of the press main body 1, and the second openings 101 are used for radially feeding light along a second direction perpendicular to the first direction; optionally, press main part 1 cover is located one side of runner assembly 2, circumference is array distribution and has four on the lateral wall of press main part 1 the second opening, the second opening is the bell mouth, follows in the first cavity along the second direction is from inside to outside aperture crescent, and the aperture of outermost end is 5mm, and the trompil angle is 30 degrees, the bell mouth is the observation hole, can be used to for anvil sample group provides radial light advance, also can be used to observe at any time from the side the condition of anvil sample group.

The principles and embodiments of the present application are described herein using specific examples, which are only used to help understand the method and its core idea of the present application. The foregoing is only a preferred embodiment of the present application, and it should be noted that there are no specific structures which are objectively limitless due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes can be made without departing from the principle of the present invention, and the technical features mentioned above can be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention in other instances, which may or may not be practiced, are intended to be within the scope of the present application.

Claims

1. A diamond anvil device, comprising:

the press comprises a press main body (1), wherein the press main body (1) is provided with a first cavity penetrating through the press main body, and the top of the first cavity is provided with a first opening;

the anvil sample group is arranged in the first cavity and comprises a first anvil (18) and a second anvil (17) which are distributed along a first direction, a first space is formed between the first anvil (18) and the second anvil (17), the first space is used for placing a sample, and two sides of the sample are respectively abutted against the first anvil (18) and the second anvil (17);

a rotary driving component for driving the first anvil (18) to rotate and providing shear stress for the sample on the side close to the first anvil (18);

a pressing member for providing a pressing force in the first direction to the side of the sample close to the second anvil (17).

2. A diamond anvil cell according to claim 1, wherein: keep away from first anvil (18) second anvil (17) end is equipped with runner assembly (2), the one end of runner assembly (2) is arranged in the first cavity, the other end exposes outside press main part (1), runner assembly (2) are close to the one end of first anvil (18) is equipped with first recess, the opening direction orientation of first recess first anvil (18) side, be equipped with first cushion (16) in the first recess, first recess side is kept away from in first cushion (16) with first anvil (18) are connected, runner assembly (2) are kept away from first recess end with the rotation driving subassembly is connected, the rotation driving subassembly is used for driving first cushion (16) drive first anvil (18) rotate.

3. A diamond anvil cell according to claim 2, wherein: the rotary driving assembly comprises a driven gear (3) which is connected with the end of the first anvil (18) and is far away from the rotating assembly (2), a driving gear (5) meshed with the driven gear (3), and a driving motor (6) which drives the driving gear (5) to drive the driven gear (3) to rotate.

4. A diamond anvil cell according to claim 3, wherein: the pressing device is characterized by further comprising a pressing frame body, the pressing frame body comprises a first partition plate (12) sleeved outside the rotating assembly (2), the first partition plate (12) is arranged at the top of the pressing machine main body (1), and the first partition plate (12) is used for limiting the pressing machine main body (1) to move towards the side close to the driven gear (3) along the first direction; a second cushion block (19) is arranged on the side, far away from the first partition plate (12), in the first cavity, and the side, close to the first partition plate (12), of the second cushion block (19) is connected with the second anvil block (17); the pressing assembly may provide a force to the second pad (19) in the first direction.

5. A diamond anvil cell according to claim 4, wherein: the pressurizing assembly includes:

the pressurizing base (8) is arranged on the side, far away from the first partition plate (12), of the press main body (1), a second cavity is formed in the pressurizing base (8), a first inlet communicated with the second cavity is formed in the side, close to the press main body (1), of the pressurizing base, a guide portion is arranged in the middle of the bottom surface of the second cavity, and the extending direction of the guide portion is the first direction;

the piston assembly (9) comprises a vertical part sleeved outside the guide part and a transverse part connected to the vertical part and close to the side of the press main body (1), and the transverse part is arranged outside the first inlet; the outer wall of the vertical part is tightly attached to the inner wall of the second cavity, and the press main body (1) is arranged on the side, away from the vertical part, of the transverse part;

a hydraulic assembly (23), the hydraulic assembly (23) for driving the piston assembly (9) along the guide in the first direction.

6. A diamond anvil cell according to claim 5, wherein: a circle of first sealing elements (20) is arranged on the guide portion, a circle of second sealing elements (21) is arranged on the vertical portion, and a second space is formed among the first sealing elements (20) far away from the side of the transverse portion, the second sealing elements (21) far away from the side of the transverse portion, the vertical portion and the inner wall of the second cavity; the bottom of the pressurizing base (8) is provided with a first through hole, the first through hole is communicated with the second space, the first through hole is far away from the end of the second space, the hydraulic assembly (23) is used for conveying hydraulic oil into the second space, and the second space is provided with a second through hole.

7. A diamond anvil cell according to claim 5, wherein: the press body (1) is sleeved with a fastening assembly (10), and the fastening assembly (10) is used for fixing the press body (1) on the transverse part.

8. A diamond anvil cell according to claim 5, wherein: the side, far away from the rotating assembly (2), of the driven gear (3) is provided with a measuring assembly (4) for measuring the rotating angle of the rotating assembly (2).

9. A diamond anvil cell according to claim 8, wherein: the measuring component (4), the driven gear (3) and the rotating component (2) middle part is equipped with coaxial first through-hole group, the axis direction of first through-hole group does first direction, first through-hole group is used for following first direction axial advances light.

10. A diamond anvil cell according to claim 1, wherein: the side wall of the press main body (1) is provided with a plurality of second openings (101) communicated with the first cavity, and the second openings (101) are used for feeding light along a second direction perpendicular to the first direction in a radial mode.