Continuous flow low-temperature device with damping function for diamond anvil cell press

Abstract

The utility model provides a continuous flow low-temperature device with a damping function for a diamond anvil cell press. The continuous flow low-temperature device comprises an experiment cavity, a cooling table is arranged in the experiment cavity, and a through hole is formed in one side of the experiment cavity; the cold table is fixedly mounted in the shielding sleeve; the shielding sleeve is fixedly installed in the experiment cavity, two ends of the shielding sleeve are respectively provided with a sealed shielding mechanism, and one side of the shielding sleeve is provided with a matched butt joint hole corresponding to the through hole. A cooling mechanism and a vacuum mechanism are arranged on the control cavity, and the control cavity is connected with the through hole through a butt joint sleeve; the cooling mechanism comprises a liquid conveying pipe located at the end, away from the butt joint sleeve, of the control cavity and an emptying opening. Damping corrugated pipes are respectively arranged in the butt joint sleeve corresponding to the infusion tube and the emptying port; the vacuum mechanism comprises a vacuum pumping opening located in one side of the control cavity. The cooling table is in flexible connection with the liquid conveying pipe and the hollow beating opening through the damping corrugated pipes, vibration transmission of the cooling table can be greatly reduced and avoided through the flexibility and buffering performance of the corrugated pipes, and then the stability of the anvil cell pressing machine is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of anvil presses, and in particular to a continuous flow low temperature device for a diamond anvil press with a shock absorbing function. Background Art

[0002] As the only high-pressure physical device that can reach 100GPa pressure on microscopic samples, the diamond anvil press is used in more and more interdisciplinary and physical and chemical experiments. Nowadays, the development and progress of science and technology does not depend solely on a single measurement method, such as the need to introduce rotational shear variables under high pressure conditions and high and low temperature variables under shear conditions.

[0003] There are two common types of cryogenic devices available. One is a continuous flow cryogenic device, which is divided into liquid nitrogen continuous flow and liquid helium continuous flow according to the cryogenic medium. Liquid nitrogen continuous flow is more common because liquid helium is expensive and difficult to recycle. The other is a cryogenic device that includes a refrigerator, which requires expensive cold head refrigeration investment costs. Both of these common cryogenic devices have the problem of large vibration amplitudes, which generally vibrate widely within a few or tens of microns, which is very unfavorable for microscopic samples in the press. Therefore, the above problems need to be solved urgently. Summary of the invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a continuous flow low temperature device for a diamond anvil press with a shock absorbing function.

[0005] The present application provides a continuous flow low temperature device for a diamond anvil press with a shock absorbing function, comprising:

[0006] An experimental cavity, wherein a cold stage is provided inside the experimental cavity and a through hole is provided on one side;

[0007] The cold stage is fixedly installed in the shielding sleeve and is used to install the anvil press and perform temperature control;

[0008] The shielding sleeve is fixedly installed inside the experimental cavity, and sealed shielding mechanisms are respectively provided at both ends, and a matching docking hole is provided on one side corresponding to the through hole;

[0009] A control cavity, wherein a cooling mechanism and a vacuum mechanism are respectively provided on the control cavity and are connected to the through hole via a docking sleeve;

[0010] The cooling mechanism includes an infusion tube and an exhaust port located at one end of the control cavity away from the docking sleeve;

[0011] Shock-absorbing bellows are respectively arranged inside the docking sleeve corresponding to the infusion tube and the drain port, and are used to form a circulation with the cold stage;

[0012] The vacuum mechanism comprises a vacuum outlet located at one side of the control cavity, which is used to control the vacuum degree in the shielding sleeve.

[0013] Furthermore,

[0014] The anvil press and the cold table are connected via a ferrule;

[0015] The cold stage is annular, and a stepped hole is provided in the middle along the axial direction for installing and positioning the ferrule;

[0016] A matching butt joint is provided at the bottom of the ferrule corresponding to the stepped hole for plugging and installing with the cold stage.

[0017] Furthermore,

[0018] The diameter of the ferrule matches the large hole diameter of the stepped hole;

[0019] The butt joint is provided with an external thread, and the diameter thereof matches the small hole diameter of the stepped hole.

[0020] Furthermore,

[0021] A locking plate is threadedly mounted on the butt joint;

[0022] The locking plate is sleeved on the butt joint and is located at an end of the cold stage away from the ferrule, and is used to lock the ferrule on the cold stage.

[0023] Furthermore,

[0024] A cover plate is installed at one end of the ferrule away from the cold stage, which is used to press the anvil press tightly into the ferrule;

[0025] The cover plate and the ferrule are connected by bolts, and matching mounting holes are provided corresponding to the bolts;

[0026] The mounting holes are evenly arranged in the circumferential direction on the cover plate and penetrate the cover plate along the axial direction of the cover plate.

[0027] Furthermore,

[0028] The shielding mechanism comprises an upper shielding plate and a lower shielding plate respectively located at two ends of the shielding sleeve;

[0029] The upper shielding plate is fixedly mounted on the top of the shielding sleeve, and a first inner window is provided in the middle;

[0030] The lower shielding plate is fixedly mounted on the bottom of the shielding sleeve, and a second inner window is arranged in the middle thereof.

[0031] Furthermore,

[0032] Sealing rings are also provided between the upper shielding plate, the lower shielding plate and the shielding sleeve respectively;

[0033] The shielding sleeve is provided with a matching mounting groove corresponding to the sealing ring;

[0034] The mounting grooves are respectively located at two ends of the shielding sleeve and have a semicircular cross section.

[0035] Furthermore,

[0036] End covers are respectively provided at both ends of the experimental cavity;

[0037] The end cover is connected to the experimental cavity by screws;

[0038] The experimental cavity is provided with matching threaded holes corresponding to the screws;

[0039] The end cover is provided with a matching first through hole corresponding to the screw.

[0040] The advantages and positive effects of this application are:

[0041] This technical solution arranges a shock-absorbing bellows in the docking sleeve, so that the cold table and the infusion tube and the air port are softly connected through the shock-absorbing bellows respectively. The flexibility and cushioning property of the bellows can greatly reduce and avoid the transmission of shock to the cold table, thereby ensuring the stability of the anvil press. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A schematic structural diagram of a continuous flow low temperature device for a diamond anvil press with a shock absorbing function provided in an embodiment of the present application.

[0043] The text labels in the figure are as follows: 100-experimental chamber; 110-cold table; 120-shielding sleeve; 130-ferrule; 131-cover plate; 140-upper shielding plate; 150-lower shielding plate; 160-end cover; 200-anvil press; 300-control chamber; 310-infusion tube; 320-emptying port; 330-vacuum extraction port; 400-docking sleeve; 410-shock-absorbing bellows. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is described in detail below in conjunction with the accompanying drawings. The description in this section is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present application.

[0045] Please refer to Figure 1The present embodiment provides a continuous flow low temperature device for a diamond anvil press with a shock absorbing function, comprising an experimental cavity 100, wherein a cold stage 110 is provided inside the experimental cavity 100, and a through hole is provided on one side; the cold stage 110 is fixedly installed in a shielding sleeve 120, and is used to install an anvil press 200 and perform temperature control; the shielding sleeve 120 is fixedly installed inside the experimental cavity 100, and sealed shielding mechanisms are provided at both ends, and a matching docking hole is provided on one side corresponding to the through hole; a control cavity 300, a control The cavity 300 is provided with a cooling mechanism and a vacuum mechanism, and is connected to the through hole through the docking sleeve 400; the cooling mechanism includes an infusion tube 310 and an emptying port 320 located at one end of the control cavity 300 away from the docking sleeve 400; the interior of the docking sleeve 400 is provided with a shock-absorbing bellows 410 corresponding to the infusion tube 310 and the emptying port 320, respectively, for forming a circulation with the cold stage 110; the vacuum mechanism includes a vacuum extraction port 330 located on one side of the control cavity 300, for controlling the vacuum degree in the shielding sleeve 120.

[0046] In this embodiment, the cold stage 110 is installed in the experimental cavity 100 through the shielding sleeve 120; the shielding sleeve 120 is coaxially installed inside the experimental cavity 100 and is relatively fixed to the experimental cavity 100 through a first bolt; the first bolt passes through the through hole on the experimental cavity 100 and is threadedly connected to the docking hole on the shielding sleeve 120.

[0047] In this embodiment, the control cavity 300 is connected to the through hole on the experimental cavity 100 through the docking sleeve 400, and the temperature and pressure of the experimental cavity 100 are controlled by the cooling mechanism and the vacuum mechanism installed thereon.

[0048] In this embodiment, the cooling mechanism includes an infusion tube 310 and an exhaust port 320 arranged on the control cavity 300; one end of the infusion tube 310 is connected to an external liquid nitrogen or liquid helium output device, and the other end is connected to the cold stage 110 through a shock-absorbing bellows 410; the exhaust port 320 is connected to the cold stage 110 through another shock-absorbing bellows 410; and the interior of the cold stage 110 is provided with a cooling pipeline, and the two ends are respectively connected to the two shock-absorbing bellows 410.

[0049] In this embodiment, the vacuum mechanism includes a vacuum port 330 arranged on the control cavity 300; the vacuum port 330 is connected to the docking sleeve 400, and then connected to the shielding sleeve 120 through the docking sleeve 400 and the docking hole; at the same time, the vacuum port 330 is also connected to an external vacuum pumping device, and then the vacuum degree in the shielding sleeve 120 can be effectively controlled by controlling the vacuum pumping device.

[0050] In a preferred embodiment, the anvil press 200 and the cold table 110 are connected via a ferrule 130; the cold table 110 is annular, and a stepped hole is provided in the middle along the axial direction for installing and positioning the ferrule 130; a matching docking head is provided at the bottom of the ferrule 130 corresponding to the stepped hole for plugging and installing with the cold table 110.

[0051] In this embodiment, the anvil press 200 and the cold table 110 are connected via a ferrule 130 ; the top of the ferrule 130 is an open structure for installing the anvil press 200 ; the bottom of the ferrule 130 is provided with a docking head with a relatively small diameter for plugging and installing with the cold table 110 .

[0052] In this embodiment, the cold stage 110 is annular and has a coaxial stepped hole in the middle; the stepped hole has a relatively large diameter at one end close to the ferrule 130 , which can both dock with the ferrule 130 and support the bottom of the ferrule 130 .

[0053] In a preferred embodiment, the diameter of the ferrule 130 matches the diameter of the large hole of the stepped hole; the butt joint is provided with an external thread, and the diameter thereof matches the diameter of the small hole of the stepped hole.

[0054] In a preferred embodiment, a locking plate is threadedly mounted on the butt joint; the locking plate is sleeved on the butt joint and is located at one end of the cold stage 110 away from the ferrule 130 , and is used to lock the ferrule 130 on the cold stage 110 .

[0055] In a preferred embodiment, a cover plate 131 is installed at one end of the ferrule 130 away from the cold stage 110, which is used to press the anvil press 200 into the ferrule 130; the cover plate 131 and the ferrule 130 are connected by bolts, and matching mounting holes are provided for the corresponding bolts; the mounting holes are evenly arranged along the circumference on the cover plate 131, and penetrate the cover plate 131 along the axial direction of the cover plate 131.

[0056] In this embodiment, the anvil press 200 is locked in the ferrule 130 through the cover plate 131; the cover plate 131 is provided with evenly arranged mounting holes along the circumference for bolts to pass through and then connect with the ferrule 130; the end of the ferrule 130 is provided with matching threaded holes corresponding to the bolts, and then threadedly connected with the bolts.

[0057] In a preferred embodiment, the shielding mechanism includes an upper shielding plate 140 and a lower shielding plate 150 respectively located at both ends of the shielding sleeve 120; the upper shielding plate 140 is fixedly installed on the top of the shielding sleeve 120, and a first inner window is provided in the middle; the lower shielding plate 150 is fixedly installed on the bottom of the shielding sleeve 120, and a second inner window is provided in the middle.

[0058] In a preferred embodiment, sealing rings are respectively provided between the upper shielding plate 140 and the lower shielding plate 150 and the shielding sleeve 120; matching mounting grooves are provided on the shielding sleeve 120 corresponding to the sealing rings; the mounting grooves are respectively located at both ends of the shielding sleeve 120 and have a semicircular cross-section.

[0059] In a preferred embodiment, end covers 160 are respectively provided at both ends of the experimental chamber 100; the end covers 160 are connected to the experimental chamber 100 by screws; matching threaded holes are provided on the experimental chamber 100 corresponding to the screws; and matching first through holes are provided on the end covers 160 corresponding to the screws.

[0060] In this embodiment, the end cover 160 is connected to the experimental chamber 100 by screws; at the same time, a sealing ring is also provided between the experimental chamber 100 and the end cover 160 to improve the sealing performance of the connection.

[0061] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can also make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A continuous flow low temperature device for a diamond anvil press with a shock absorbing function, characterized in that: include An experimental cavity (100), wherein a cold stage (110) is provided inside the experimental cavity (100) and a through hole is provided on one side; The cold stage (110) is fixedly installed in the shielding sleeve (120) and is used to install the anvil press (200) and perform temperature control; The shielding sleeve (120) is fixedly installed inside the experimental cavity (100), with sealed shielding mechanisms provided at both ends, and a matching docking hole provided at one side corresponding to the through hole; A control cavity (300), wherein a cooling mechanism and a vacuum mechanism are respectively provided on the control cavity (300), and are connected to the through hole via a docking sleeve (400); The cooling mechanism comprises a liquid infusion tube (310) and an exhaust port (320) located at an end of the control cavity (300) away from the docking sleeve (400); The interior of the docking sleeve (400) is provided with shock-absorbing bellows (410) corresponding to the infusion tube (310) and the drain port (320), respectively, for forming a circulation with the cold stage (110); The vacuum mechanism comprises a vacuum extraction port (330) located on one side of the control cavity (300) and used for controlling the vacuum degree in the shielding sleeve (120).

2. The continuous flow low temperature device for diamond anvil press with shock absorption function according to claim 1, characterized in that: The anvil press (200) and the cold stage (110) are connected via a ferrule (130); The cold stage (110) is annular, and a stepped hole is provided in the middle along the axial direction for installing and positioning the ferrule (130); A matching butt joint is provided at the bottom of the ferrule (130) corresponding to the stepped hole, and is used for plugging and installing with the cold stage (110).

3. The continuous flow low temperature device for a diamond anvil press with a shock absorbing function according to claim 2, characterized in that: The diameter of the ferrule (130) matches the large hole diameter of the stepped hole; The butt joint is provided with an external thread, and the diameter thereof matches the small hole diameter of the stepped hole.

4. The continuous flow low temperature device for a diamond anvil press with a shock absorbing function according to claim 3, characterized in that: A locking plate is threadedly mounted on the butt joint; The locking plate is sleeved on the butt joint and is located at an end of the cold table (110) away from the clamping sleeve (130), and is used to lock the clamping sleeve (130) on the cold table (110).

5. The continuous flow low temperature device for a diamond anvil press with a shock absorbing function according to claim 2, characterized in that: A cover plate (131) is installed at one end of the ferrule (130) away from the cold stage (110) and is used to press the anvil press (200) tightly into the ferrule (130); The cover plate (131) and the ferrule (130) are connected via bolts, and matching mounting holes are provided corresponding to the bolts; The mounting holes are evenly arranged along the circumferential direction on the cover plate (131) and penetrate the cover plate (131) along the axial direction of the cover plate (131).

6. The continuous flow low temperature device for diamond anvil press with shock absorption function according to claim 1, characterized in that: The shielding mechanism comprises an upper shielding plate (140) and a lower shielding plate (150) respectively located at two ends of the shielding sleeve (120); The upper shielding plate (140) is fixedly mounted on the top of the shielding sleeve (120), and a first inner window is provided in the middle; The lower shielding plate (150) is fixedly mounted on the bottom of the shielding sleeve (120), and a second inner window is provided in the middle.

7. The continuous flow low temperature device for a diamond anvil press with a shock absorbing function according to claim 6, characterized in that: Sealing rings are also provided between the upper shielding plate (140) and the lower shielding plate (150) and the shielding sleeve (120) respectively; The shielding sleeve (120) is provided with a matching mounting groove corresponding to the sealing ring; The mounting grooves are respectively located at two ends of the shielding sleeve (120), and have a semicircular cross-section.

8. The continuous flow low temperature device for a diamond anvil press with a shock absorbing function according to claim 1, characterized in that: End covers (160) are respectively provided at both ends of the experimental cavity (100); The end cover (160) is connected to the experimental chamber (100) via screws; The experimental cavity (100) is provided with a matching threaded hole corresponding to the screw; The end cover (160) is provided with a matching first through hole corresponding to the screw.

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