Gas collecting device suitable for samples prepared by high pressure machine

Abstract

A gas collecting device suitable for samples prepared by a high pressure machine is characterized in that a bottom sealing cushion block and a rotary thorn tip located on the upper portion are arranged at the bottom and the upper portion of a main cavity respectively, a sealed space is formed in the middle of the main cavity, a metal protective layer containing samples is placed in the sealed space, and the sealed space is further provided with a gas dispersing space where the metal protective layer is placed. And the side surface of the space is provided with a gas sampling channel which is sealed by a side sealing gasket, so that after the gas sampling needle penetrates into the gas dispersion space through the sealing gasket, a tested sample diffused from the metal protection layer can be acquired. The gas taking device is small and exquisite in structure, easy to operate and convenient to disassemble and assemble, gas taking work can be rapidly completed, and gas diffusion cannot be caused; different operation sizes and gas sampling needle hole sizes can be customized according to different sample bins, and the adaptability is high.

Description

Technical Field

[0001] The utility model is applicable to the field of gas analysis, and in particular to a gas collection device for samples prepared by a large press at high temperature and high pressure. Background Art

[0002] Under extreme conditions, high temperature and pressure can effectively alter the interactions between molecules and even atoms, producing states and structures completely different from those found under normal pressure. By applying high temperature and pressure to induce polymorphic phase transitions or reactions between different substances, we can discover new phenomena and patterns that are difficult to produce under conventional conditions, and identify new phases, compounds, or materials that can only appear under high pressure.

[0003] Currently, large presses capable of achieving high-temperature and high-pressure experimental environments exceeding 50 GPa and 2000 K are capable of achieving this. By employing high-pressure, high-temperature synthesis methods that combine both high pressure and high temperature, we are seeking to produce new materials that, after decompression and cooling, retain the unique structures and properties of their high-pressure, high-temperature state at ambient pressure and temperature. This discovery, along with the potential for new reactions, phase transitions, materials, properties, and substances, holds significant scientific significance in diverse fields, including geology, planetary science, and high-pressure chemistry.

[0004] In current experiments, samples synthesized under high temperature and pressure in a large press are partly solid and partly vapor. Solid samples are convenient for removal and subsequent testing. However, once the metal protective layer of the vapor sample is removed, the gaseous components within it leak into the environment, making collection and subsequent analysis difficult.

[0005] Therefore, for gas phase samples, how to create a closed environment when the sample chamber is opened to analyze the gas composition and obtain a gas collection device suitable for samples prepared by a large press has become a technical problem that urgently needs to be solved in the existing technology. Utility Model Content

[0006] The purpose of the utility model is to provide a gas collection device suitable for samples prepared by a large press, which can be customized to different operating sizes according to different sample chambers, and has a compact structure, simple operation, and convenient assembly and disassembly.

[0007] To achieve this purpose, the present invention adopts the following technical solutions:

[0008] A gas collection device suitable for samples prepared by a large press, comprising a main cavity, a bottom sealing pad, a spin spike, side sealing pads, a metal protective layer and a gas sample 8;

[0009] There is a channel running through the front and back in the middle of the main cavity, and there is a sample placement space in the middle of the channel, in which a metal protective layer is placed. The metal protective layer includes a gas sample to form a sample chamber; a spiral spike tip is inserted into the upper part of the main cavity, and a bottom sealing gasket is embedded in the bottom to seal the channel, and the sample placement space is formed in the middle of the channel. The metal protective layer is placed on the upper part of the bottom sealing gasket and faces the spiral spike tip. The sample placement space also has a gas dispersion space when the metal protective layer is placed. There is an air intake channel on the side of the main cavity that is connected to the gas dispersion space. The side sealing gasket is placed in the air intake channel and seals the air intake channel.

[0010] Optionally, the top of the thorn tip has a pressing head, the bottom has a pointed head, and the middle has at least two annular grooves for embedding a sealing ring.

[0011] Optionally, the bottom sealing gasket includes a supporting portion located at the bottom and an embedded portion located in the middle, the supporting portion is connected to the bottom of the main cavity, and the embedded portion is embedded in the channel and supports the metal protective layer.

[0012] Optionally, the embedding portion of the bottom sealing gasket block has an annular groove for embedding a sealing ring.

[0013] Optionally, an internal thread is provided at one end of the air intake channel close to the outside, and a docking locking nut is installed thereon. The docking locking nut is used to screw in and tighten the side sealing gasket, and has a through hole at the center.

[0014] Optionally, the side sealing gasket is a polytetrafluoroethylene gasket, and the sealing ring is a rubber sealing ring.

[0015] The utility model has the following advantages:

[0016] 1. The gas collection device has a compact structure, simple operation, and convenient assembly and disassembly. It can quickly complete the gas collection work without causing gas diffusion.

[0017] 2. The utility model can be customized with different operating sizes and gas extraction pinhole sizes according to different sample chambers, and has strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an appearance diagram of a gas collection device suitable for samples prepared by a large press according to an embodiment of the present utility model;

[0019] Figure 2 is a cross-sectional view of a gas collection device according to a specific embodiment of the present utility model;

[0020] Figure 3 Schematic diagram of a thorn tip according to a specific embodiment of the present invention;

[0021] Figure 4 is a schematic diagram of a bottom sealing gasket according to a specific embodiment of the present utility model;

[0022] Figure 5 It is a schematic diagram of a locking nut and a sealing gasket according to a specific embodiment of the utility model.

[0023] The technical features indicated by the reference numerals in the figures are:

[0024] 1. Main cavity; 2. Bottom sealing gasket; 3. Spiral spike; 4. Docking lock nut; 5. Gas extraction sealing gasket; 6. Sealing ring; 7. Metal protective layer; 8. Gas sample. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0026] The utility model is that a bottom sealing gasket block and a rotary thorn tip located at the top are respectively placed at the bottom and the top of the main cavity, forming a sealed space in the middle, and a metal protective layer containing a sample is placed in the sealed space. The sealed space also has a gas dispersion space after the metal protective layer is placed. The side of the space is provided with an air extraction channel, and the air extraction channel is sealed by a side sealing gasket. In this way, after the air extraction needle penetrates the gas dispersion space through the sealing gasket, it can obtain the sample to be tested diffused from the metal protective layer.

[0027] For details, see Figure 1 and Figure 2 , a gas collection device suitable for samples prepared by a large press, comprising a main cavity 1, a bottom sealing gasket block 2, a spin spike 3, a side sealing gasket 5, a metal protective layer 7 and a gas sample 8;

[0028] There is a channel running through the front and back in the middle of the main cavity 1, and there is a sample placement space in the middle of the channel, in which a metal protective layer 7 is placed. The metal protective layer 7 includes a gas sample 8 to form a sample chamber; a spin spike 3 is inserted into the upper part of the main cavity 1, and a bottom sealing gasket 2 is embedded in the bottom to seal the channel, and the sample placement space is formed in the middle of the channel. The metal protective layer 7 is placed on the upper part of the bottom sealing gasket 2 and faces the spin spike 3. The sample placement space also has a gas dispersion space when the metal protective layer 7 is placed. There is an air extraction channel on the side of the main cavity 1 that is connected to the gas dispersion space. The side sealing gasket 5 is placed in the air extraction channel and seals the air extraction channel.

[0029] For further information, see Figure 3 The top of the thorn tip 3 has a pressing head, the bottom has a pointed head, and the middle has at least two annular grooves to embed the sealing ring 6 to increase the gas sealing effect.

[0030] See also Figure 4 The bottom sealing gasket 2 includes a supporting portion located at the bottom and an embedded portion located in the middle. The supporting portion is connected to the bottom of the main cavity 1, and the embedded portion is embedded in the channel and supports the metal protective layer 7.

[0031] Furthermore, the embedding portion of the bottom sealing pad block 2 is provided with an annular groove for embedding the sealing ring 6 to enhance the gas sealing effect.

[0032] In this embodiment, the sample chamber is synthesized by a large press device under high temperature and high pressure experimental conditions. Specifically, the metal protective layer 7 tightly wraps the gas sample to be tested under high temperature and high pressure and forms a surface sealing structure to prevent leakage and loss of the gas sample generated when the sample is taken out after the experiment is completed.

[0033] The end of the air intake channel close to the outside is provided with an internal thread and is fitted with a docking lock nut 4, see Figure 5 The butt locking nut 4 is used to screw into the compression side sealing gasket 5 and has a through hole in the center.

[0034] During installation, the sample chamber is first placed into the bottom of the main cavity 1 channel, the bottom sealing block 2 is fitted with a sealing ring 6, and inserted into the main cavity 1 from the bottom end, where the elasticity of the rubber sealing ring 6 creates a sealing effect. The spinner tip 3 is partially covered with the sealing ring 6 and inserted into the main cavity from the top end, where the elasticity of the rubber sealing ring 6 creates a sliding sealing effect.

[0035] When taking out gas, the thorn tip 3 is quickly screwed in from top to bottom to pierce the metal protective layer 7, so that the gas sample 8 to be tested stored inside is released, diffused in the gas dispersion space, and sealed. The gas extraction needle of the measuring instrument enters the gas diffusion space near the position of the sample to be tested in the main cavity through the through hole in the center of the docking locking nut 4 and the side sealing gasket in turn, which is conducive to the gas extraction needle used in the gas mass spectrometry detection device to enter the sealed space from the external hole to perform gas collection operations. After pulling out the gas extraction needle, gas phase analysis testing can be immediately and conveniently performed. After the test is completed, the bottom sealing gasket block is pulled out, and the sample can be taken out for subsequent additional tests or replaced with a new sample for re-testing.

[0036] In the present invention, the side sealing gasket 5 is a polytetrafluoroethylene gasket, and the sealing ring 6 is a rubber sealing ring.

[0037] The utility model has the following advantages:

[0038] 1. The gas collection device has a compact structure, simple operation, and convenient assembly and disassembly. It can quickly complete the gas collection work without causing gas diffusion.

[0039] 2. The utility model can be customized with different operating sizes and gas extraction pinhole sizes according to different sample chambers, and has strong adaptability.

[0040] The above content is a further detailed description of the present invention in combination with a specific preferred embodiment. It cannot be determined that the specific embodiments of the present invention are limited to this. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the concept of the present invention, which should be regarded as belonging to the scope of protection of the present invention determined by the submitted claims.

Claims

1. A gas collection device suitable for samples prepared in a large press, characterized by: It includes a main cavity, a bottom sealing gasket, a spin spike, a side sealing gasket, a metal protective layer and a gas sample; There is a channel running through the front and back in the middle of the main cavity, and there is a sample placement space in the middle of the channel, in which a metal protective layer is placed. The metal protective layer includes a gas sample to form a sample chamber; a spiral spike tip is inserted into the upper part of the main cavity, and a bottom sealing gasket is embedded in the bottom to seal the channel, and the sample placement space is formed in the middle of the channel. The metal protective layer is placed on the upper part of the bottom sealing gasket and faces the spiral spike tip. The sample placement space also has a gas dispersion space when the metal protective layer is placed. There is an air intake channel on the side of the main cavity that is connected to the gas dispersion space. The side sealing gasket is placed in the air intake channel and seals the air intake channel.

2. The gas collection device according to claim 1, characterized in that: The top of the thorn tip is provided with a pressing head, the bottom is provided with a pointed head, and the middle is provided with at least two annular grooves for embedding a sealing ring.

3. The gas collection device according to claim 2, characterized in that: The bottom sealing gasket includes a supporting portion located at the bottom and an embedded portion located in the middle, the supporting portion is connected to the bottom of the main cavity, and the embedded portion is embedded in the channel and supports the metal protective layer.

4. The gas collection device according to claim 3, characterized in that: The embedding portion of the bottom sealing pad is provided with an annular groove for embedding a sealing ring.

5. The gas collection device according to any one of claims 2 to 4, characterized in that: An internal thread is provided at one end of the air intake channel close to the outside, and a butt lock nut is installed thereon. The butt lock nut is used to screw in and tighten the side sealing gasket, and a through hole is provided at the center.

6. The gas collection device according to claim 5, characterized in that: The side sealing gasket is a polytetrafluoroethylene gasket, and the sealing ring is a rubber sealing ring.

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